videojs-contrib-media-sources
Version:
A Media Source Extensions plugin for video.js
14,282 lines • 471 kB
JavaScript
(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
},{}],2:[function(require,module,exports){
(function (global){
var topLevel = typeof global !== 'undefined' ? global :
typeof window !== 'undefined' ? window : {}
var minDoc = require('min-document');
var doccy;
if (typeof document !== 'undefined') {
doccy = document;
} else {
doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'];
if (!doccy) {
doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'] = minDoc;
}
}
module.exports = doccy;
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"min-document":1}],3:[function(require,module,exports){
(function (global){
var win;
if (typeof window !== "undefined") {
win = window;
} else if (typeof global !== "undefined") {
win = global;
} else if (typeof self !== "undefined"){
win = self;
} else {
win = {};
}
module.exports = win;
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],4:[function(require,module,exports){
/**
* mux.js
*
* Copyright (c) 2016 Brightcove
* All rights reserved.
*
* A stream-based aac to mp4 converter. This utility can be used to
* deliver mp4s to a SourceBuffer on platforms that support native
* Media Source Extensions.
*/
'use strict';
var Stream = require('../utils/stream.js');
// Constants
var AacStream;
/**
* Splits an incoming stream of binary data into ADTS and ID3 Frames.
*/
AacStream = function() {
var
everything = new Uint8Array(),
timeStamp = 0;
AacStream.prototype.init.call(this);
this.setTimestamp = function(timestamp) {
timeStamp = timestamp;
};
this.parseId3TagSize = function(header, byteIndex) {
var
returnSize = (header[byteIndex + 6] << 21) |
(header[byteIndex + 7] << 14) |
(header[byteIndex + 8] << 7) |
(header[byteIndex + 9]),
flags = header[byteIndex + 5],
footerPresent = (flags & 16) >> 4;
if (footerPresent) {
return returnSize + 20;
}
return returnSize + 10;
};
this.parseAdtsSize = function(header, byteIndex) {
var
lowThree = (header[byteIndex + 5] & 0xE0) >> 5,
middle = header[byteIndex + 4] << 3,
highTwo = header[byteIndex + 3] & 0x3 << 11;
return (highTwo | middle) | lowThree;
};
this.push = function(bytes) {
var
frameSize = 0,
byteIndex = 0,
bytesLeft,
chunk,
packet,
tempLength;
// If there are bytes remaining from the last segment, prepend them to the
// bytes that were pushed in
if (everything.length) {
tempLength = everything.length;
everything = new Uint8Array(bytes.byteLength + tempLength);
everything.set(everything.subarray(0, tempLength));
everything.set(bytes, tempLength);
} else {
everything = bytes;
}
while (everything.length - byteIndex >= 3) {
if ((everything[byteIndex] === 'I'.charCodeAt(0)) &&
(everything[byteIndex + 1] === 'D'.charCodeAt(0)) &&
(everything[byteIndex + 2] === '3'.charCodeAt(0))) {
// Exit early because we don't have enough to parse
// the ID3 tag header
if (everything.length - byteIndex < 10) {
break;
}
// check framesize
frameSize = this.parseId3TagSize(everything, byteIndex);
// Exit early if we don't have enough in the buffer
// to emit a full packet
if (frameSize > everything.length) {
break;
}
chunk = {
type: 'timed-metadata',
data: everything.subarray(byteIndex, byteIndex + frameSize)
};
this.trigger('data', chunk);
byteIndex += frameSize;
continue;
} else if ((everything[byteIndex] & 0xff === 0xff) &&
((everything[byteIndex + 1] & 0xf0) === 0xf0)) {
// Exit early because we don't have enough to parse
// the ADTS frame header
if (everything.length - byteIndex < 7) {
break;
}
frameSize = this.parseAdtsSize(everything, byteIndex);
// Exit early if we don't have enough in the buffer
// to emit a full packet
if (frameSize > everything.length) {
break;
}
packet = {
type: 'audio',
data: everything.subarray(byteIndex, byteIndex + frameSize),
pts: timeStamp,
dts: timeStamp
};
this.trigger('data', packet);
byteIndex += frameSize;
continue;
}
byteIndex++;
}
bytesLeft = everything.length - byteIndex;
if (bytesLeft > 0) {
everything = everything.subarray(byteIndex);
} else {
everything = new Uint8Array();
}
};
};
AacStream.prototype = new Stream();
module.exports = AacStream;
},{"../utils/stream.js":33}],5:[function(require,module,exports){
/**
* mux.js
*
* Copyright (c) 2016 Brightcove
* All rights reserved.
*
* Utilities to detect basic properties and metadata about Aac data.
*/
'use strict';
var ADTS_SAMPLING_FREQUENCIES = [
96000,
88200,
64000,
48000,
44100,
32000,
24000,
22050,
16000,
12000,
11025,
8000,
7350
];
var parseSyncSafeInteger = function(data) {
return (data[0] << 21) |
(data[1] << 14) |
(data[2] << 7) |
(data[3]);
};
// return a percent-encoded representation of the specified byte range
// @see http://en.wikipedia.org/wiki/Percent-encoding
var percentEncode = function(bytes, start, end) {
var i, result = '';
for (i = start; i < end; i++) {
result += '%' + ('00' + bytes[i].toString(16)).slice(-2);
}
return result;
};
// return the string representation of the specified byte range,
// interpreted as ISO-8859-1.
var parseIso88591 = function(bytes, start, end) {
return unescape(percentEncode(bytes, start, end)); // jshint ignore:line
};
var parseId3TagSize = function(header, byteIndex) {
var
returnSize = (header[byteIndex + 6] << 21) |
(header[byteIndex + 7] << 14) |
(header[byteIndex + 8] << 7) |
(header[byteIndex + 9]),
flags = header[byteIndex + 5],
footerPresent = (flags & 16) >> 4;
if (footerPresent) {
return returnSize + 20;
}
return returnSize + 10;
};
var parseAdtsSize = function(header, byteIndex) {
var
lowThree = (header[byteIndex + 5] & 0xE0) >> 5,
middle = header[byteIndex + 4] << 3,
highTwo = header[byteIndex + 3] & 0x3 << 11;
return (highTwo | middle) | lowThree;
};
var parseType = function(header, byteIndex) {
if ((header[byteIndex] === 'I'.charCodeAt(0)) &&
(header[byteIndex + 1] === 'D'.charCodeAt(0)) &&
(header[byteIndex + 2] === '3'.charCodeAt(0))) {
return 'timed-metadata';
} else if ((header[byteIndex] & 0xff === 0xff) &&
((header[byteIndex + 1] & 0xf0) === 0xf0)) {
return 'audio';
}
return null;
};
var parseSampleRate = function(packet) {
var i = 0;
while (i + 5 < packet.length) {
if (packet[i] !== 0xFF || (packet[i + 1] & 0xF6) !== 0xF0) {
// If a valid header was not found, jump one forward and attempt to
// find a valid ADTS header starting at the next byte
i++;
continue;
}
return ADTS_SAMPLING_FREQUENCIES[(packet[i + 2] & 0x3c) >>> 2];
}
return null;
};
var parseAacTimestamp = function(packet) {
var frameStart, frameSize, frame, frameHeader;
// find the start of the first frame and the end of the tag
frameStart = 10;
if (packet[5] & 0x40) {
// advance the frame start past the extended header
frameStart += 4; // header size field
frameStart += parseSyncSafeInteger(packet.subarray(10, 14));
}
// parse one or more ID3 frames
// http://id3.org/id3v2.3.0#ID3v2_frame_overview
do {
// determine the number of bytes in this frame
frameSize = parseSyncSafeInteger(packet.subarray(frameStart + 4, frameStart + 8));
if (frameSize < 1) {
return null;
}
frameHeader = String.fromCharCode(packet[frameStart],
packet[frameStart + 1],
packet[frameStart + 2],
packet[frameStart + 3]);
if (frameHeader === 'PRIV') {
frame = packet.subarray(frameStart + 10, frameStart + frameSize + 10);
for (var i = 0; i < frame.byteLength; i++) {
if (frame[i] === 0) {
var owner = parseIso88591(frame, 0, i);
if (owner === 'com.apple.streaming.transportStreamTimestamp') {
var d = frame.subarray(i + 1);
var size = ((d[3] & 0x01) << 30) |
(d[4] << 22) |
(d[5] << 14) |
(d[6] << 6) |
(d[7] >>> 2);
size *= 4;
size += d[7] & 0x03;
return size;
}
break;
}
}
}
frameStart += 10; // advance past the frame header
frameStart += frameSize; // advance past the frame body
} while (frameStart < packet.byteLength);
return null;
};
module.exports = {
parseId3TagSize: parseId3TagSize,
parseAdtsSize: parseAdtsSize,
parseType: parseType,
parseSampleRate: parseSampleRate,
parseAacTimestamp: parseAacTimestamp
};
},{}],6:[function(require,module,exports){
'use strict';
var Stream = require('../utils/stream.js');
var AdtsStream;
var
ADTS_SAMPLING_FREQUENCIES = [
96000,
88200,
64000,
48000,
44100,
32000,
24000,
22050,
16000,
12000,
11025,
8000,
7350
];
/*
* Accepts a ElementaryStream and emits data events with parsed
* AAC Audio Frames of the individual packets. Input audio in ADTS
* format is unpacked and re-emitted as AAC frames.
*
* @see http://wiki.multimedia.cx/index.php?title=ADTS
* @see http://wiki.multimedia.cx/?title=Understanding_AAC
*/
AdtsStream = function() {
var buffer;
AdtsStream.prototype.init.call(this);
this.push = function(packet) {
var
i = 0,
frameNum = 0,
frameLength,
protectionSkipBytes,
frameEnd,
oldBuffer,
sampleCount,
adtsFrameDuration;
if (packet.type !== 'audio') {
// ignore non-audio data
return;
}
// Prepend any data in the buffer to the input data so that we can parse
// aac frames the cross a PES packet boundary
if (buffer) {
oldBuffer = buffer;
buffer = new Uint8Array(oldBuffer.byteLength + packet.data.byteLength);
buffer.set(oldBuffer);
buffer.set(packet.data, oldBuffer.byteLength);
} else {
buffer = packet.data;
}
// unpack any ADTS frames which have been fully received
// for details on the ADTS header, see http://wiki.multimedia.cx/index.php?title=ADTS
while (i + 5 < buffer.length) {
// Loook for the start of an ADTS header..
if (buffer[i] !== 0xFF || (buffer[i + 1] & 0xF6) !== 0xF0) {
// If a valid header was not found, jump one forward and attempt to
// find a valid ADTS header starting at the next byte
i++;
continue;
}
// The protection skip bit tells us if we have 2 bytes of CRC data at the
// end of the ADTS header
protectionSkipBytes = (~buffer[i + 1] & 0x01) * 2;
// Frame length is a 13 bit integer starting 16 bits from the
// end of the sync sequence
frameLength = ((buffer[i + 3] & 0x03) << 11) |
(buffer[i + 4] << 3) |
((buffer[i + 5] & 0xe0) >> 5);
sampleCount = ((buffer[i + 6] & 0x03) + 1) * 1024;
adtsFrameDuration = (sampleCount * 90000) /
ADTS_SAMPLING_FREQUENCIES[(buffer[i + 2] & 0x3c) >>> 2];
frameEnd = i + frameLength;
// If we don't have enough data to actually finish this ADTS frame, return
// and wait for more data
if (buffer.byteLength < frameEnd) {
return;
}
// Otherwise, deliver the complete AAC frame
this.trigger('data', {
pts: packet.pts + (frameNum * adtsFrameDuration),
dts: packet.dts + (frameNum * adtsFrameDuration),
sampleCount: sampleCount,
audioobjecttype: ((buffer[i + 2] >>> 6) & 0x03) + 1,
channelcount: ((buffer[i + 2] & 1) << 2) |
((buffer[i + 3] & 0xc0) >>> 6),
samplerate: ADTS_SAMPLING_FREQUENCIES[(buffer[i + 2] & 0x3c) >>> 2],
samplingfrequencyindex: (buffer[i + 2] & 0x3c) >>> 2,
// assume ISO/IEC 14496-12 AudioSampleEntry default of 16
samplesize: 16,
data: buffer.subarray(i + 7 + protectionSkipBytes, frameEnd)
});
// If the buffer is empty, clear it and return
if (buffer.byteLength === frameEnd) {
buffer = undefined;
return;
}
frameNum++;
// Remove the finished frame from the buffer and start the process again
buffer = buffer.subarray(frameEnd);
}
};
this.flush = function() {
this.trigger('done');
};
};
AdtsStream.prototype = new Stream();
module.exports = AdtsStream;
},{"../utils/stream.js":33}],7:[function(require,module,exports){
'use strict';
var Stream = require('../utils/stream.js');
var ExpGolomb = require('../utils/exp-golomb.js');
var H264Stream, NalByteStream;
var PROFILES_WITH_OPTIONAL_SPS_DATA;
/**
* Accepts a NAL unit byte stream and unpacks the embedded NAL units.
*/
NalByteStream = function() {
var
syncPoint = 0,
i,
buffer;
NalByteStream.prototype.init.call(this);
this.push = function(data) {
var swapBuffer;
if (!buffer) {
buffer = data.data;
} else {
swapBuffer = new Uint8Array(buffer.byteLength + data.data.byteLength);
swapBuffer.set(buffer);
swapBuffer.set(data.data, buffer.byteLength);
buffer = swapBuffer;
}
// Rec. ITU-T H.264, Annex B
// scan for NAL unit boundaries
// a match looks like this:
// 0 0 1 .. NAL .. 0 0 1
// ^ sync point ^ i
// or this:
// 0 0 1 .. NAL .. 0 0 0
// ^ sync point ^ i
// advance the sync point to a NAL start, if necessary
for (; syncPoint < buffer.byteLength - 3; syncPoint++) {
if (buffer[syncPoint + 2] === 1) {
// the sync point is properly aligned
i = syncPoint + 5;
break;
}
}
while (i < buffer.byteLength) {
// look at the current byte to determine if we've hit the end of
// a NAL unit boundary
switch (buffer[i]) {
case 0:
// skip past non-sync sequences
if (buffer[i - 1] !== 0) {
i += 2;
break;
} else if (buffer[i - 2] !== 0) {
i++;
break;
}
// deliver the NAL unit if it isn't empty
if (syncPoint + 3 !== i - 2) {
this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));
}
// drop trailing zeroes
do {
i++;
} while (buffer[i] !== 1 && i < buffer.length);
syncPoint = i - 2;
i += 3;
break;
case 1:
// skip past non-sync sequences
if (buffer[i - 1] !== 0 ||
buffer[i - 2] !== 0) {
i += 3;
break;
}
// deliver the NAL unit
this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));
syncPoint = i - 2;
i += 3;
break;
default:
// the current byte isn't a one or zero, so it cannot be part
// of a sync sequence
i += 3;
break;
}
}
// filter out the NAL units that were delivered
buffer = buffer.subarray(syncPoint);
i -= syncPoint;
syncPoint = 0;
};
this.flush = function() {
// deliver the last buffered NAL unit
if (buffer && buffer.byteLength > 3) {
this.trigger('data', buffer.subarray(syncPoint + 3));
}
// reset the stream state
buffer = null;
syncPoint = 0;
this.trigger('done');
};
};
NalByteStream.prototype = new Stream();
// values of profile_idc that indicate additional fields are included in the SPS
// see Recommendation ITU-T H.264 (4/2013),
// 7.3.2.1.1 Sequence parameter set data syntax
PROFILES_WITH_OPTIONAL_SPS_DATA = {
100: true,
110: true,
122: true,
244: true,
44: true,
83: true,
86: true,
118: true,
128: true,
138: true,
139: true,
134: true
};
/**
* Accepts input from a ElementaryStream and produces H.264 NAL unit data
* events.
*/
H264Stream = function() {
var
nalByteStream = new NalByteStream(),
self,
trackId,
currentPts,
currentDts,
discardEmulationPreventionBytes,
readSequenceParameterSet,
skipScalingList;
H264Stream.prototype.init.call(this);
self = this;
this.push = function(packet) {
if (packet.type !== 'video') {
return;
}
trackId = packet.trackId;
currentPts = packet.pts;
currentDts = packet.dts;
nalByteStream.push(packet);
};
nalByteStream.on('data', function(data) {
var
event = {
trackId: trackId,
pts: currentPts,
dts: currentDts,
data: data
};
switch (data[0] & 0x1f) {
case 0x05:
event.nalUnitType = 'slice_layer_without_partitioning_rbsp_idr';
break;
case 0x06:
event.nalUnitType = 'sei_rbsp';
event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));
break;
case 0x07:
event.nalUnitType = 'seq_parameter_set_rbsp';
event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));
event.config = readSequenceParameterSet(event.escapedRBSP);
break;
case 0x08:
event.nalUnitType = 'pic_parameter_set_rbsp';
break;
case 0x09:
event.nalUnitType = 'access_unit_delimiter_rbsp';
break;
default:
break;
}
self.trigger('data', event);
});
nalByteStream.on('done', function() {
self.trigger('done');
});
this.flush = function() {
nalByteStream.flush();
};
/**
* Advance the ExpGolomb decoder past a scaling list. The scaling
* list is optionally transmitted as part of a sequence parameter
* set and is not relevant to transmuxing.
* @param count {number} the number of entries in this scaling list
* @param expGolombDecoder {object} an ExpGolomb pointed to the
* start of a scaling list
* @see Recommendation ITU-T H.264, Section 7.3.2.1.1.1
*/
skipScalingList = function(count, expGolombDecoder) {
var
lastScale = 8,
nextScale = 8,
j,
deltaScale;
for (j = 0; j < count; j++) {
if (nextScale !== 0) {
deltaScale = expGolombDecoder.readExpGolomb();
nextScale = (lastScale + deltaScale + 256) % 256;
}
lastScale = (nextScale === 0) ? lastScale : nextScale;
}
};
/**
* Expunge any "Emulation Prevention" bytes from a "Raw Byte
* Sequence Payload"
* @param data {Uint8Array} the bytes of a RBSP from a NAL
* unit
* @return {Uint8Array} the RBSP without any Emulation
* Prevention Bytes
*/
discardEmulationPreventionBytes = function(data) {
var
length = data.byteLength,
emulationPreventionBytesPositions = [],
i = 1,
newLength, newData;
// Find all `Emulation Prevention Bytes`
while (i < length - 2) {
if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {
emulationPreventionBytesPositions.push(i + 2);
i += 2;
} else {
i++;
}
}
// If no Emulation Prevention Bytes were found just return the original
// array
if (emulationPreventionBytesPositions.length === 0) {
return data;
}
// Create a new array to hold the NAL unit data
newLength = length - emulationPreventionBytesPositions.length;
newData = new Uint8Array(newLength);
var sourceIndex = 0;
for (i = 0; i < newLength; sourceIndex++, i++) {
if (sourceIndex === emulationPreventionBytesPositions[0]) {
// Skip this byte
sourceIndex++;
// Remove this position index
emulationPreventionBytesPositions.shift();
}
newData[i] = data[sourceIndex];
}
return newData;
};
/**
* Read a sequence parameter set and return some interesting video
* properties. A sequence parameter set is the H264 metadata that
* describes the properties of upcoming video frames.
* @param data {Uint8Array} the bytes of a sequence parameter set
* @return {object} an object with configuration parsed from the
* sequence parameter set, including the dimensions of the
* associated video frames.
*/
readSequenceParameterSet = function(data) {
var
frameCropLeftOffset = 0,
frameCropRightOffset = 0,
frameCropTopOffset = 0,
frameCropBottomOffset = 0,
sarScale = 1,
expGolombDecoder, profileIdc, levelIdc, profileCompatibility,
chromaFormatIdc, picOrderCntType,
numRefFramesInPicOrderCntCycle, picWidthInMbsMinus1,
picHeightInMapUnitsMinus1,
frameMbsOnlyFlag,
scalingListCount,
sarRatio,
aspectRatioIdc,
i;
expGolombDecoder = new ExpGolomb(data);
profileIdc = expGolombDecoder.readUnsignedByte(); // profile_idc
profileCompatibility = expGolombDecoder.readUnsignedByte(); // constraint_set[0-5]_flag
levelIdc = expGolombDecoder.readUnsignedByte(); // level_idc u(8)
expGolombDecoder.skipUnsignedExpGolomb(); // seq_parameter_set_id
// some profiles have more optional data we don't need
if (PROFILES_WITH_OPTIONAL_SPS_DATA[profileIdc]) {
chromaFormatIdc = expGolombDecoder.readUnsignedExpGolomb();
if (chromaFormatIdc === 3) {
expGolombDecoder.skipBits(1); // separate_colour_plane_flag
}
expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_luma_minus8
expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_chroma_minus8
expGolombDecoder.skipBits(1); // qpprime_y_zero_transform_bypass_flag
if (expGolombDecoder.readBoolean()) { // seq_scaling_matrix_present_flag
scalingListCount = (chromaFormatIdc !== 3) ? 8 : 12;
for (i = 0; i < scalingListCount; i++) {
if (expGolombDecoder.readBoolean()) { // seq_scaling_list_present_flag[ i ]
if (i < 6) {
skipScalingList(16, expGolombDecoder);
} else {
skipScalingList(64, expGolombDecoder);
}
}
}
}
}
expGolombDecoder.skipUnsignedExpGolomb(); // log2_max_frame_num_minus4
picOrderCntType = expGolombDecoder.readUnsignedExpGolomb();
if (picOrderCntType === 0) {
expGolombDecoder.readUnsignedExpGolomb(); // log2_max_pic_order_cnt_lsb_minus4
} else if (picOrderCntType === 1) {
expGolombDecoder.skipBits(1); // delta_pic_order_always_zero_flag
expGolombDecoder.skipExpGolomb(); // offset_for_non_ref_pic
expGolombDecoder.skipExpGolomb(); // offset_for_top_to_bottom_field
numRefFramesInPicOrderCntCycle = expGolombDecoder.readUnsignedExpGolomb();
for (i = 0; i < numRefFramesInPicOrderCntCycle; i++) {
expGolombDecoder.skipExpGolomb(); // offset_for_ref_frame[ i ]
}
}
expGolombDecoder.skipUnsignedExpGolomb(); // max_num_ref_frames
expGolombDecoder.skipBits(1); // gaps_in_frame_num_value_allowed_flag
picWidthInMbsMinus1 = expGolombDecoder.readUnsignedExpGolomb();
picHeightInMapUnitsMinus1 = expGolombDecoder.readUnsignedExpGolomb();
frameMbsOnlyFlag = expGolombDecoder.readBits(1);
if (frameMbsOnlyFlag === 0) {
expGolombDecoder.skipBits(1); // mb_adaptive_frame_field_flag
}
expGolombDecoder.skipBits(1); // direct_8x8_inference_flag
if (expGolombDecoder.readBoolean()) { // frame_cropping_flag
frameCropLeftOffset = expGolombDecoder.readUnsignedExpGolomb();
frameCropRightOffset = expGolombDecoder.readUnsignedExpGolomb();
frameCropTopOffset = expGolombDecoder.readUnsignedExpGolomb();
frameCropBottomOffset = expGolombDecoder.readUnsignedExpGolomb();
}
if (expGolombDecoder.readBoolean()) {
// vui_parameters_present_flag
if (expGolombDecoder.readBoolean()) {
// aspect_ratio_info_present_flag
aspectRatioIdc = expGolombDecoder.readUnsignedByte();
switch (aspectRatioIdc) {
case 1: sarRatio = [1, 1]; break;
case 2: sarRatio = [12, 11]; break;
case 3: sarRatio = [10, 11]; break;
case 4: sarRatio = [16, 11]; break;
case 5: sarRatio = [40, 33]; break;
case 6: sarRatio = [24, 11]; break;
case 7: sarRatio = [20, 11]; break;
case 8: sarRatio = [32, 11]; break;
case 9: sarRatio = [80, 33]; break;
case 10: sarRatio = [18, 11]; break;
case 11: sarRatio = [15, 11]; break;
case 12: sarRatio = [64, 33]; break;
case 13: sarRatio = [160, 99]; break;
case 14: sarRatio = [4, 3]; break;
case 15: sarRatio = [3, 2]; break;
case 16: sarRatio = [2, 1]; break;
case 255: {
sarRatio = [expGolombDecoder.readUnsignedByte() << 8 |
expGolombDecoder.readUnsignedByte(),
expGolombDecoder.readUnsignedByte() << 8 |
expGolombDecoder.readUnsignedByte() ];
break;
}
}
if (sarRatio) {
sarScale = sarRatio[0] / sarRatio[1];
}
}
}
return {
profileIdc: profileIdc,
levelIdc: levelIdc,
profileCompatibility: profileCompatibility,
width: Math.ceil((((picWidthInMbsMinus1 + 1) * 16) - frameCropLeftOffset * 2 - frameCropRightOffset * 2) * sarScale),
height: ((2 - frameMbsOnlyFlag) * (picHeightInMapUnitsMinus1 + 1) * 16) - (frameCropTopOffset * 2) - (frameCropBottomOffset * 2)
};
};
};
H264Stream.prototype = new Stream();
module.exports = {
H264Stream: H264Stream,
NalByteStream: NalByteStream
};
},{"../utils/exp-golomb.js":32,"../utils/stream.js":33}],8:[function(require,module,exports){
module.exports = {
adts: require('./adts'),
h264: require('./h264')
};
},{"./adts":6,"./h264":7}],9:[function(require,module,exports){
var highPrefix = [33, 16, 5, 32, 164, 27];
var lowPrefix = [33, 65, 108, 84, 1, 2, 4, 8, 168, 2, 4, 8, 17, 191, 252];
var zeroFill = function(count) {
var a = [];
while (count--) {
a.push(0);
}
return a;
};
var makeTable = function(metaTable) {
return Object.keys(metaTable).reduce(function(obj, key) {
obj[key] = new Uint8Array(metaTable[key].reduce(function(arr, part) {
return arr.concat(part);
}, []));
return obj;
}, {});
};
// Frames-of-silence to use for filling in missing AAC frames
var coneOfSilence = {
96000: [highPrefix, [227, 64], zeroFill(154), [56]],
88200: [highPrefix, [231], zeroFill(170), [56]],
64000: [highPrefix, [248, 192], zeroFill(240), [56]],
48000: [highPrefix, [255, 192], zeroFill(268), [55, 148, 128], zeroFill(54), [112]],
44100: [highPrefix, [255, 192], zeroFill(268), [55, 163, 128], zeroFill(84), [112]],
32000: [highPrefix, [255, 192], zeroFill(268), [55, 234], zeroFill(226), [112]],
24000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 112], zeroFill(126), [224]],
16000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 255], zeroFill(269), [223, 108], zeroFill(195), [1, 192]],
12000: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 253, 128], zeroFill(259), [56]],
11025: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 255, 192], zeroFill(268), [55, 175, 128], zeroFill(108), [112]],
8000: [lowPrefix, zeroFill(268), [3, 121, 16], zeroFill(47), [7]]
};
module.exports = makeTable(coneOfSilence);
},{}],10:[function(require,module,exports){
'use strict';
var Stream = require('../utils/stream.js');
/**
* The final stage of the transmuxer that emits the flv tags
* for audio, video, and metadata. Also tranlates in time and
* outputs caption data and id3 cues.
*/
var CoalesceStream = function(options) {
// Number of Tracks per output segment
// If greater than 1, we combine multiple
// tracks into a single segment
this.numberOfTracks = 0;
this.metadataStream = options.metadataStream;
this.videoTags = [];
this.audioTags = [];
this.videoTrack = null;
this.audioTrack = null;
this.pendingCaptions = [];
this.pendingMetadata = [];
this.pendingTracks = 0;
this.processedTracks = 0;
CoalesceStream.prototype.init.call(this);
// Take output from multiple
this.push = function(output) {
// buffer incoming captions until the associated video segment
// finishes
if (output.text) {
return this.pendingCaptions.push(output);
}
// buffer incoming id3 tags until the final flush
if (output.frames) {
return this.pendingMetadata.push(output);
}
if (output.track.type === 'video') {
this.videoTrack = output.track;
this.videoTags = output.tags;
this.pendingTracks++;
}
if (output.track.type === 'audio') {
this.audioTrack = output.track;
this.audioTags = output.tags;
this.pendingTracks++;
}
};
};
CoalesceStream.prototype = new Stream();
CoalesceStream.prototype.flush = function(flushSource) {
var
id3,
caption,
i,
timelineStartPts,
event = {
tags: {},
captions: [],
captionStreams: {},
metadata: []
};
if (this.pendingTracks < this.numberOfTracks) {
if (flushSource !== 'VideoSegmentStream' &&
flushSource !== 'AudioSegmentStream') {
// Return because we haven't received a flush from a data-generating
// portion of the segment (meaning that we have only recieved meta-data
// or captions.)
return;
} else if (this.pendingTracks === 0) {
// In the case where we receive a flush without any data having been
// received we consider it an emitted track for the purposes of coalescing
// `done` events.
// We do this for the case where there is an audio and video track in the
// segment but no audio data. (seen in several playlists with alternate
// audio tracks and no audio present in the main TS segments.)
this.processedTracks++;
if (this.processedTracks < this.numberOfTracks) {
return;
}
}
}
this.processedTracks += this.pendingTracks;
this.pendingTracks = 0;
if (this.processedTracks < this.numberOfTracks) {
return;
}
if (this.videoTrack) {
timelineStartPts = this.videoTrack.timelineStartInfo.pts;
} else if (this.audioTrack) {
timelineStartPts = this.audioTrack.timelineStartInfo.pts;
}
event.tags.videoTags = this.videoTags;
event.tags.audioTags = this.audioTags;
// Translate caption PTS times into second offsets into the
// video timeline for the segment, and add track info
for (i = 0; i < this.pendingCaptions.length; i++) {
caption = this.pendingCaptions[i];
caption.startTime = caption.startPts - timelineStartPts;
caption.startTime /= 90e3;
caption.endTime = caption.endPts - timelineStartPts;
caption.endTime /= 90e3;
event.captionStreams[caption.stream] = true;
event.captions.push(caption);
}
// Translate ID3 frame PTS times into second offsets into the
// video timeline for the segment
for (i = 0; i < this.pendingMetadata.length; i++) {
id3 = this.pendingMetadata[i];
id3.cueTime = id3.pts - timelineStartPts;
id3.cueTime /= 90e3;
event.metadata.push(id3);
}
// We add this to every single emitted segment even though we only need
// it for the first
event.metadata.dispatchType = this.metadataStream.dispatchType;
// Reset stream state
this.videoTrack = null;
this.audioTrack = null;
this.videoTags = [];
this.audioTags = [];
this.pendingCaptions.length = 0;
this.pendingMetadata.length = 0;
this.pendingTracks = 0;
this.processedTracks = 0;
// Emit the final segment
this.trigger('data', event);
this.trigger('done');
};
module.exports = CoalesceStream;
},{"../utils/stream.js":33}],11:[function(require,module,exports){
'use strict';
var FlvTag = require('./flv-tag.js');
// For information on the FLV format, see
// http://download.macromedia.com/f4v/video_file_format_spec_v10_1.pdf.
// Technically, this function returns the header and a metadata FLV tag
// if duration is greater than zero
// duration in seconds
// @return {object} the bytes of the FLV header as a Uint8Array
var getFlvHeader = function(duration, audio, video) { // :ByteArray {
var
headBytes = new Uint8Array(3 + 1 + 1 + 4),
head = new DataView(headBytes.buffer),
metadata,
result,
metadataLength;
// default arguments
duration = duration || 0;
audio = audio === undefined ? true : audio;
video = video === undefined ? true : video;
// signature
head.setUint8(0, 0x46); // 'F'
head.setUint8(1, 0x4c); // 'L'
head.setUint8(2, 0x56); // 'V'
// version
head.setUint8(3, 0x01);
// flags
head.setUint8(4, (audio ? 0x04 : 0x00) | (video ? 0x01 : 0x00));
// data offset, should be 9 for FLV v1
head.setUint32(5, headBytes.byteLength);
// init the first FLV tag
if (duration <= 0) {
// no duration available so just write the first field of the first
// FLV tag
result = new Uint8Array(headBytes.byteLength + 4);
result.set(headBytes);
result.set([0, 0, 0, 0], headBytes.byteLength);
return result;
}
// write out the duration metadata tag
metadata = new FlvTag(FlvTag.METADATA_TAG);
metadata.pts = metadata.dts = 0;
metadata.writeMetaDataDouble('duration', duration);
metadataLength = metadata.finalize().length;
result = new Uint8Array(headBytes.byteLength + metadataLength);
result.set(headBytes);
result.set(head.byteLength, metadataLength);
return result;
};
module.exports = getFlvHeader;
},{"./flv-tag.js":12}],12:[function(require,module,exports){
/**
* An object that stores the bytes of an FLV tag and methods for
* querying and manipulating that data.
* @see http://download.macromedia.com/f4v/video_file_format_spec_v10_1.pdf
*/
'use strict';
var FlvTag;
// (type:uint, extraData:Boolean = false) extends ByteArray
FlvTag = function(type, extraData) {
var
// Counter if this is a metadata tag, nal start marker if this is a video
// tag. unused if this is an audio tag
adHoc = 0, // :uint
// The default size is 16kb but this is not enough to hold iframe
// data and the resizing algorithm costs a bit so we create a larger
// starting buffer for video tags
bufferStartSize = 16384,
// checks whether the FLV tag has enough capacity to accept the proposed
// write and re-allocates the internal buffers if necessary
prepareWrite = function(flv, count) {
var
bytes,
minLength = flv.position + count;
if (minLength < flv.bytes.byteLength) {
// there's enough capacity so do nothing
return;
}
// allocate a new buffer and copy over the data that will not be modified
bytes = new Uint8Array(minLength * 2);
bytes.set(flv.bytes.subarray(0, flv.position), 0);
flv.bytes = bytes;
flv.view = new DataView(flv.bytes.buffer);
},
// commonly used metadata properties
widthBytes = FlvTag.widthBytes || new Uint8Array('width'.length),
heightBytes = FlvTag.heightBytes || new Uint8Array('height'.length),
videocodecidBytes = FlvTag.videocodecidBytes || new Uint8Array('videocodecid'.length),
i;
if (!FlvTag.widthBytes) {
// calculating the bytes of common metadata names ahead of time makes the
// corresponding writes faster because we don't have to loop over the
// characters
// re-test with test/perf.html if you're planning on changing this
for (i = 0; i < 'width'.length; i++) {
widthBytes[i] = 'width'.charCodeAt(i);
}
for (i = 0; i < 'height'.length; i++) {
heightBytes[i] = 'height'.charCodeAt(i);
}
for (i = 0; i < 'videocodecid'.length; i++) {
videocodecidBytes[i] = 'videocodecid'.charCodeAt(i);
}
FlvTag.widthBytes = widthBytes;
FlvTag.heightBytes = heightBytes;
FlvTag.videocodecidBytes = videocodecidBytes;
}
this.keyFrame = false; // :Boolean
switch (type) {
case FlvTag.VIDEO_TAG:
this.length = 16;
// Start the buffer at 256k
bufferStartSize *= 6;
break;
case FlvTag.AUDIO_TAG:
this.length = 13;
this.keyFrame = true;
break;
case FlvTag.METADATA_TAG:
this.length = 29;
this.keyFrame = true;
break;
default:
throw new Error('Unknown FLV tag type');
}
this.bytes = new Uint8Array(bufferStartSize);
this.view = new DataView(this.bytes.buffer);
this.bytes[0] = type;
this.position = this.length;
this.keyFrame = extraData; // Defaults to false
// presentation timestamp
this.pts = 0;
// decoder timestamp
this.dts = 0;
// ByteArray#writeBytes(bytes:ByteArray, offset:uint = 0, length:uint = 0)
this.writeBytes = function(bytes, offset, length) {
var
start = offset || 0,
end;
length = length || bytes.byteLength;
end = start + length;
prepareWrite(this, length);
this.bytes.set(bytes.subarray(start, end), this.position);
this.position += length;
this.length = Math.max(this.length, this.position);
};
// ByteArray#writeByte(value:int):void
this.writeByte = function(byte) {
prepareWrite(this, 1);
this.bytes[this.position] = byte;
this.position++;
this.length = Math.max(this.length, this.position);
};
// ByteArray#writeShort(value:int):void
this.writeShort = function(short) {
prepareWrite(this, 2);
this.view.setUint16(this.position, short);
this.position += 2;
this.length = Math.max(this.length, this.position);
};
// Negative index into array
// (pos:uint):int
this.negIndex = function(pos) {
return this.bytes[this.length - pos];
};
// The functions below ONLY work when this[0] == VIDEO_TAG.
// We are not going to check for that because we dont want the overhead
// (nal:ByteArray = null):int
this.nalUnitSize = function() {
if (adHoc === 0) {
return 0;
}
return this.length - (adHoc + 4);
};
this.startNalUnit = function() {
// remember position and add 4 bytes
if (adHoc > 0) {
throw new Error('Attempted to create new NAL wihout closing the old one');
}
// reserve 4 bytes for nal unit size
adHoc = this.length;
this.length += 4;
this.position = this.length;
};
// (nal:ByteArray = null):void
this.endNalUnit = function(nalContainer) {
var
nalStart, // :uint
nalLength; // :uint
// Rewind to the marker and write the size
if (this.length === adHoc + 4) {
// we started a nal unit, but didnt write one, so roll back the 4 byte size value
this.length -= 4;
} else if (adHoc > 0) {
nalStart = adHoc + 4;
nalLength = this.length - nalStart;
this.position = adHoc;
this.view.setUint32(this.position, nalLength);
this.position = this.length;
if (nalContainer) {
// Add the tag to the NAL unit
nalContainer.push(this.bytes.subarray(nalStart, nalStart + nalLength));
}
}
adHoc = 0;
};
/**
* Write out a 64-bit floating point valued metadata property. This method is
* called frequently during a typical parse and needs to be fast.
*/
// (key:String, val:Number):void
this.writeMetaDataDouble = function(key, val) {
var i;
prepareWrite(this, 2 + key.length + 9);
// write size of property name
this.view.setUint16(this.position, key.length);
this.position += 2;
// this next part looks terrible but it improves parser throughput by
// 10kB/s in my testing
// write property name
if (key === 'width') {
this.bytes.set(widthBytes, this.position);
this.position += 5;
} else if (key === 'height') {
this.bytes.set(heightBytes, this.position);
this.position += 6;
} else if (key === 'videocodecid') {
this.bytes.set(videocodecidBytes, this.position);
this.position += 12;
} else {
for (i = 0; i < key.length; i++) {
this.bytes[this.position] = key.charCodeAt(i);
this.position++;
}
}
// skip null byte
this.position++;
// write property value
this.view.setFloat64(this.position, val);
this.position += 8;
// update flv tag length
this.length = Math.max(this.length, this.position);
++adHoc;
};
// (key:String, val:Boolean):void
this.writeMetaDataBoolean = function(key, val) {
var i;
prepareWrite(this, 2);
this.view.setUint16(this.position, key.length);
this.position += 2;
for (i = 0; i < key.length; i++) {
// if key.charCodeAt(i) >= 255, handle error
prepareWrite(this, 1);
this.bytes[this.position] = key.charCodeAt(i);
this.position++;
}
prepareWrite(this, 2);
this.view.setUint8(this.position, 0x01);
this.position++;
this.view.setUint8(this.position, val ? 0x01 : 0x00);
this.position++;
this.length = Math.max(this.length, this.position);
++adHoc;
};
// ():ByteArray
this.finalize = function() {
var
dtsDelta, // :int
len; // :int
switch (this.bytes[0]) {
// Video Data
case FlvTag.VIDEO_TAG:
// We only support AVC, 1 = key frame (for AVC, a seekable
// frame), 2 = inter frame (for AVC, a non-seekable frame)
this.bytes[11] = ((this.keyFrame || extraData) ? 0x10 : 0x20) | 0x07;
this.bytes[12] = extraData ? 0x00 : 0x01;
dtsDelta = this.pts - this.dts;
this.bytes[13] = (dtsDelta & 0x00FF0000) >>> 16;
this.bytes[14] = (dtsDelta & 0x0000FF00) >>> 8;
this.bytes[15] = (dtsDelta & 0x000000FF) >>> 0;
break;
case FlvTag.AUDIO_TAG:
this.bytes[11] = 0xAF; // 44 kHz, 16-bit stereo
this.bytes[12] = extraData ? 0x00 : 0x01;
break;
case FlvTag.METADATA_TAG:
this.position = 11;
this.view.setUint8(this.position, 0x02); // String type
this.position++;
this.view.setUint16(this.position, 0x0A); // 10 Bytes
this.position += 2;
// set "onMetaData"
this.bytes.set([0x6f, 0x6e, 0x4d, 0x65,
0x74, 0x61, 0x44, 0x61,
0x74, 0x61], this.position);
this.position += 10;
this.bytes[this.position] = 0x08; // Array type
this.position++;
this.view.setUint32(this.position, adHoc);
this.position = this.length;
this.bytes.set([0, 0, 9], this.position);
this.position += 3; // End Data Tag
this.length = this.position;
break;
}
len = this.length - 11;
// write the DataSize field
this.bytes[ 1] = (len & 0x00FF0000) >>> 16;
this.bytes[ 2] = (len & 0x0000FF00) >>> 8;
this.bytes[ 3] = (len & 0x000000FF) >>> 0;
// write the Timestamp
this.bytes[ 4] = (this.dts & 0x00FF0000) >>> 16;
this.bytes[ 5] = (this.dts & 0x0000FF00) >>> 8;
this.bytes[ 6] = (this.dts & 0x000000FF) >>> 0;
this.bytes[ 7] = (this.dts & 0xFF000000) >>> 24;
// write the StreamID
this.bytes[ 8] = 0;
this.bytes[ 9] = 0;
this.bytes[10] = 0;
// Sometimes we're at the end of the view and have one slot to write a
// uint32, so, prepareWrite of count 4, since, view is uint8
prepareWrite(this, 4);
this.view.setUint32(this.length, this.length);
this.length += 4;
this.position += 4;
// trim down the byte buffer to what is actually being used
this.bytes = this.bytes.subarray(0, this.length);
this.frameTime = FlvTag.frameTime(this.bytes);
// if bytes.bytelength isn't equal to this.length, handle error
return this;
};
};
FlvTag.AUDIO_TAG = 0x08; // == 8, :uint
FlvTag.VIDEO_TAG = 0x09; // == 9, :uint
FlvTag.METADATA_TAG = 0x12; // == 18, :uint
// (tag:ByteArray):Boolean {
FlvTag.isAudioFrame = function(tag) {
return FlvTag.AUDIO_TAG === tag[0];
};
// (tag:ByteArray):Boolean {
FlvTag.isVideoFrame = function(tag) {
return FlvTag.VIDEO_TAG === tag[0];
};
// (tag:ByteArray):Boolean {
FlvTag.isMetaData = function(tag) {
return FlvTag.METADATA_TAG === tag[0];
};
// (tag:ByteArray):Boolean {
FlvTag.isKeyFrame = function(tag) {
if (FlvTag.isVideoFrame(tag)) {
return tag[11] === 0x17;
}
if (FlvTag.isAudioFrame(tag)) {
return true;
}
if (FlvTag.isMetaData(tag)) {
return true;
}
return false;
};
// (tag:ByteArray):uint {
FlvTag.frameTime = function(tag) {
var pts = tag[ 4] << 16; // :uint
pts |= tag[ 5] << 8;
pts |= tag[ 6] << 0;
pts |= tag[ 7] << 24;
return pts;
};
module.exports = FlvTag;
},{}],13:[function(require,module,exports){
module.exports = {
tag: require('./flv-tag'),
Transmuxer: require('./transmuxer'),
getFlvHeader: require('./flv-header')
};
},{"./flv-header":11,"./flv-tag":12,"./transmuxer":15}],14:[function(require,module,exports){
'use strict';
var TagList = function() {
var self = this;
this.list = [];
this.push = function(tag) {
this.list.push({
bytes: tag.bytes,
dts: tag.dts,
pts: tag.pts,
keyFrame: tag.keyFrame,
metaDataTag: tag.metaDataTag
});
};
Object.defineProperty(this, 'length', {
get: function() {
return self.list.length;
}
});
};
module.exports = TagList;
},{}],15:[function(require,module,exports){
'use strict';
var Stream = require('../utils/stream.js');
var FlvTag = require('./flv-tag.js');
var m2ts = require('../m2ts/m2ts.js');
var AdtsStream = require('../codecs/adts.js');
var H264Stream = require('../codecs/h264').H264Stream;
var CoalesceStream = require('./coalesce-stream.js');
var TagList = require('./tag-list.js');
var
Transmuxer,
VideoSegmentStream,
AudioSegmentStream,
collectTimelineInfo,
metaDataTag,
extraDataTag;
/**
* Store information about the start and end of the tracka and the
* duration for each frame/sample we process in order to calculate
* the baseMediaDecodeTime
*/
collectTimelineInfo = function(track, data) {
if (typeof data.pts === 'number') {
if (track.timelineStartInfo.pts === undefined) {
track.timelineStartInfo.pts = data.pts;
} else {
track.timelineStartInfo.pts =
Math.min(track.timelineStartInfo.pts, data.pts);
}
}
if (typeof data.dts === 'number') {
if (track.timelineStartInfo.dts === undefined) {
track.timelineStartInfo.dts = data.dts;
} else {
track.timelineStartInfo.dts =
Math.min(track.timelineStartInfo.dts, data.dts);
}
}
};
metaDataTag = function(track, pts) {
var
tag = new FlvTag(FlvTag.METADATA_TAG); // :FlvTag
tag.dts = pts;
tag.pts = pts;
tag.writeMetaDataDouble('videocodecid', 7);
tag.writeMetaDataDouble('width', track.width);
tag.writeMetaDataDouble('height', track.height);
return tag;
};
extraDataTag = function(track, pts) {
var
i,
tag = new FlvTag(FlvTag.VIDEO_TAG, true);
tag.dts = pts;
tag.pts = pts;
tag.writeByte(0x01);// version
tag.writeByte(track.profileIdc);// profile
tag.writeByte(track.profileCompatibility);// compatibility
tag.writeByte(track.levelIdc);// level
tag.writeByte(0xFC | 0x03); // reserved (6 bits), NULA length size - 1 (2 bits)
tag.writeByte(0xE0 | 0x01); // reserved (3 bits), num of SPS (5 bits)
tag.writeShort(track.sps[0].length); // data of SPS
tag.writeBytes(track.sps[0]); // SPS
tag.writeByte(track.pps.length); // num of PPS (will there ever be more that 1 PPS?)
for (i = 0; i < track.pps.length; ++i) {
tag.writeShort(track.pps[i].length); // 2 bytes for length of PPS
tag.writeBytes(track.pps[i]); // data of PPS
}
return tag;
};
/**
* Constructs a single-track, media segment from AAC data
* events. The output of this stream can be fed to flash.
*/
AudioSegmentStream = function(track) {
var
adtsFrames = [],
videoKeyFrames = [],
oldExtraData;
AudioSegmentStream.prototype.init.call(this);
this.push = function(data) {
collectTimelineInfo(track, data);
if (track) {
track.audioobjecttype = data.audioobjecttype;
track.channelcount = data.channelcount;
track.samplerate = data.samplerate;
track.samplingfrequencyindex = data.samplingfrequencyindex;
track.samplesize = data.samplesize;
track.extraData = (track.audioobjecttype << 11) |
(track.samplingfrequencyindex << 7) |
(track.channelcount << 3);
}
data.pts = Math.round(data.pts / 90);
data.dts = Math.round(data.dts / 90);
// buffer audio data until end() is called
adtsFrames.push(data);
};
this.flush = function() {
var currentFrame, adtsFrame, lastMetaPts, tags = new TagList();
// return early if no audio data has been observed
if (adtsFrames.length === 0) {
this.trigger('done', 'AudioSegmentStream');
return;
}
lastMetaPts = -Infinity;
while (adtsFrames.length) {
currentFrame = adtsFrames.shift();
// write out a metadata frame at every video key frame
if (videoKeyFrames.length && currentFrame.pts >= videoKeyFrames[0]) {
lastMetaPts = videoKeyFrames.shift();
this.writeMetaDataTags(tags, lastMetaPts);
}
// also write out metadata tags every 1 second so that the decoder
// is re-initialized quickly after seeking into a different
// audio configuration.
if (track.extraData !== oldExtraData || currentFrame.pts - lastMetaPts >= 1000) {
this.writeMetaDataTags(tags, currentFrame.pts);
oldExtraData = track.extraData;
lastMetaPts = currentFrame.pts;
}
adtsFrame = new FlvTag(FlvTag.AUDIO_TAG);
adtsFrame.pts = currentFrame.pts;
adtsFrame.dts = currentFrame.dts;
adtsFrame.writeBytes(currentFrame.data);
tags.push(adtsFrame.finalize());
}
videoKeyFrames.length = 0;
oldExtraData = null;
this.trigger('data', {track: track, tags: tags.list});
this.trigger('done', 'AudioSegmentStream');
};
this.writeMetaDataTags = function(tags, pts) {
var adtsFrame;
adtsFrame = new FlvTag(FlvTag.METADATA_TAG);
// For audio, DTS is always the same as PTS. We want to set the DTS
// however so we can compare with video DTS to determine approximate
// packet order
adtsFrame.pts = pts;
adtsFrame.dts = pts;
// AAC is always 10
adtsFrame.writeMetaDataDouble('audiocodecid', 10);
adtsFrame.writeMetaDataBoolean('stereo', track.channelcount === 2);
adtsFrame.writeMetaDataDouble('audiosamplerate', track.samplerate);
// Is AAC always 16 bit?
adtsFrame.writeMetaDataDouble('audiosamplesize', 16);
tags.push(adtsFrame.finalize());
adtsFrame = new FlvTag(FlvTag.AUDIO_TAG, true);
// For audio, DTS is always the same as PTS. We want to set the DTS
// however so we can compare with video DTS to determine approximate
// packet order
adtsFrame.pts = pts;
adtsFrame.dts = pts;
adtsFrame.view.setUint16(adtsFrame.position, track.extraData);
adtsFrame.position += 2;
adtsFrame.length = Math.max(adtsFrame.length, adtsFrame.position);
tags.push(adtsFrame.finalize());
};
this.onVideoKeyFrame = function(pts) {
videoKeyFrames.push(pts);
};
};
AudioSegmentStream.prototype = new Stream();
/**
* Store FlvTags for the h264 stream
* @param track {object} track metadata configuration
*/
VideoSegmentStream = function(track) {
var
nalUnits = [],
config,
h264Frame;
VideoSegmentStream.prototype.init.call(this);
this.finishFrame = function(tags, frame) {
if (!frame) {
return;
}
// Check if keyframe and the length of tags.
// This makes sure we write metadata on the first frame of a segment.
if (config && track && track.newMetadata &&
(frame.keyFrame || tags.length === 0)) {
// Push extra data on every IDR frame in case we did a stream change + seek
var metaTag = metaDataTag(config, frame.dts).finalize();
var extraTag = extraDataTag(track, frame.dts).finalize();
metaTag.metaDataTag = extraTag.metaDataTag = true;
tags.push(metaTag);
tags.push(extraTag);
track.newMetadata = false;
this.trigger('keyframe', frame.dts);
}
frame.endNalUnit();
tags.push(frame.finalize());
h264Frame = null;
};
this.push = function(data) {
collectTimelineInfo(track, data);
data.pts = Math.round(data.pts / 90);
data.dts = Math.round(data.dts / 90);
// buffer video until flush() is called
nalUnits.push(data);
};
this.flush = function() {
var
currentNal,
tags = new TagList();
// Throw away nalUnits at the start of the byte stream until we find
// the first AUD
while (nalUnits.length) {
if (nalUnits[0].nalUnitType === 'access_unit_delimiter_rbsp') {
break;
}
nalUnits.shift();
}
// return early if no video data has been observed
if (nalUnits.length === 0) {
this.trigger('done', 'VideoSegmentStream');
return;
}
while (nalUnits.length) {
currentNal = nalUnits.shift();
// record the track config
if (currentNal.nalUnitType === 'seq_parameter_set_rbsp') {
track.newMetadata = true;
config = currentNal.config;
track.width = config.width;
track.height = config.height;
track.sps = [currentNal.data];
track.profileIdc = config.profileIdc;
track.levelIdc = config.levelIdc;
track.profileCompatibility = config.profileCompatibility;
h264Frame.endNalUnit();
} else if (currentNal.nalUnitType === 'pic_parameter_set_rbsp') {
track.newMetadata = true;
track.pps = [currentNal.data];
h264Frame.endNalUnit();
} else if (currentNal.nalUnitType === 'access_unit_delimiter_rbsp') {
if (h264Frame) {
this.finishFrame(tags, h264Frame);
}
h264Frame = new FlvTag(FlvTag.VIDEO_TAG);
h264Frame.pts = currentNal.pts;
h264Frame.dts = currentNal.dts;
} else {
if (currentNal.nalUnitType === 'slice_layer_without_partitioning_rbsp_idr') {
// the current sample is a key frame
h264Frame.keyFrame = true;
}
h264Frame.endNalUnit();
}
h264Frame.startNalUnit();
h264Frame.writeBytes(currentNal.data);
}
if (h264Frame) {
this.finishFrame(tags, h264Frame);
}
this.trigger('data', {track: track, tags: tags.list});
// Continue with the flush process now
this.trigger('done', 'VideoSegmentStream');
};
};
VideoSegmentStream.prototype = new Stream();
/**
* An object that incrementally transmuxes MPEG2 Trasport Stream
* chunks into an FLV.
*/
Transmuxer = function(options) {
var
self = this,
packetStream, parseStream, elementaryStream,
videoTimestampRolloverStream, audioTimestampRolloverStream,
timedMetadataTimestampRolloverStream,
adtsStream, h264Stream,
videoSegmentStream, audioSegmentStream, captionStream,
coalesceStream;
Transmuxer.prototype.init.call(this);
options = options || {};
// expose the metadata stream
this.metadataStream = new m2ts.MetadataStream();
options.metadataStream = this.metadataStream;
// set up the parsing pipeline
packetStream = new m2ts.TransportPacketStream();
parseStream = new m2ts.TransportParseStream();
elementaryStream = new m2ts.ElementaryStream();
videoTimestampRolloverStream = new m2ts.TimestampRolloverStream('video');
audioTimestampRolloverStream = new m2ts.TimestampRolloverStream('audio');
timedMetadataTimestampRolloverStream = new m2ts.TimestampRolloverStream('timed-metadata');
adtsStream = new AdtsStream();
h264Stream = new H264Stream();
coalesceStream = new CoalesceStream(options);
// disassemble MPEG2-TS packets into elementary streams
packetStream
.pipe(parseStream)
.pipe(elementaryStream);
// !!THIS ORDER IS IMPORTANT!!
// demux the streams
elementaryStream
.pipe(videoTimestampRolloverStream)
.pipe(h264Stream);
elementaryStream
.pipe(audioTimestampRolloverStream)
.pipe(adtsStream);
elementaryStream
.pipe(timedMetadataTimestampRolloverStream)
.pipe(this.metadataStream)
.pipe(coalesceStream);
// if CEA-708 parsing is available, hook up a caption stream
captionStream = new m2ts.CaptionStream();
h264Stream.pipe(captionStream)
.pipe(coalesceStream);
// hook up the segment streams once track metadata is delivered
elementaryStream.on('data', function(data) {
var i, videoTrack, audioTrack;
if (data.type === 'metadata') {
i = data.tracks.length;
// scan the tracks listed in the metadata
while (i--) {
if (data.tracks[i].type === 'video') {
videoTrack = data.tracks[i];
} else if (data.tracks[i].type === 'audio') {
audioTrack = data.tracks[i];
}
}
// hook up the video segment stream to the first track with h264 data
if (videoTrack && !videoSegmentStream) {
coalesceStream.numberOfTracks++;
videoSegmentStream = new VideoSegmentStream(videoTrack);
// Set up the final part of the video pipeline
h264Stream
.pipe(videoSegmentStream)
.pipe(coalesceStream);
}
if (audioTrack && !audioSegmentStream) {
// hook up the audio segment stream to the first track with aac data
coalesceStream.numberOfTracks++;
audioSegmentStream = new AudioSegmentStream(audioTrack);
// Set up the final part of the audio pipeline
adtsStream
.pipe(audioSegmentStream)
.pipe(coalesceStream);
if (videoSegmentStream) {
videoSegmentStream.on('keyframe', audioSegmentStream.onVideoKeyFrame);
}
}
}
});
// feed incoming data to the front of the parsing pipeline
this.push = function(data) {
packetStream.push(data);
};
// flush any buffered data
this.flush = function() {
// Start at the top of the pipeline and flush all pending work
packetStream.flush();
};
// Caption data has to be reset when seeking outside buffered range
this.resetCaptions = function() {
captionStream.reset();
};
// Re-emit any data coming from the coalesce stream to the outside world
coalesceStream.on('data', function(event) {
self.trigger('data', event);
});
// Let the consumer know we have finished flushing the entire pipeline
coalesceStream.on('done', function() {
self.trigger('done');
});
};
Transmuxer.prototype = new Stream();
// forward compatibility
module.exports = Transmuxer;
},{"../codecs/adts.js":6,"../codecs/h264":7,"../m2ts/m2ts.js":19,"../utils/stream.js":33,"./coalesce-stream.js":10,"./flv-tag.js":12,"./tag-list.js":14}],16:[function(require,module,exports){
'use strict';
var muxjs = {
codecs: require('./codecs'),
mp4: require('./mp4'),
flv: require('./flv'),
mp2t: require('./m2ts')
};
// include all the tools when the full library is required
muxjs.mp4.tools = require('./tools/mp4-inspector');
muxjs.flv.tools = require('./tools/flv-inspector');
muxjs.mp2t.tools = require('./tools/ts-inspector');
module.exports = muxjs;
},{"./codecs":8,"./flv":13,"./m2ts":18,"./mp4":24,"./tools/flv-inspector":28,"./tools/mp4-inspector":29,"./tools/ts-inspector":30}],17:[function(require,module,exports){
/**
* mux.js
*
* Copyright (c) 2015 Brightcove
* All rights reserved.
*
* Reads in-band caption information from a video elementary
* stream. Captions must follow the CEA-708 standard for injection
* into an MPEG-2 transport streams.
* @see https://en.wikipedia.org/wiki/CEA-708
* @see https://www.gpo.gov/fdsys/pkg/CFR-2007-title47-vol1/pdf/CFR-2007-title47-vol1-sec15-119.pdf
*/
'use strict';
// -----------------
// Link To Transport
// -----------------
// Supplemental enhancement information (SEI) NAL units have a
// payload type field to indicate how they are to be
// interpreted. CEAS-708 caption content is always transmitted with
// payload type 0x04.
var USER_DATA_REGISTERED_ITU_T_T35 = 4,
RBSP_TRAILING_BITS = 128,
Stream = require('../utils/stream');
/**
* Parse a supplemental enhancement information (SEI) NAL unit.
* Stops parsing once a message of type ITU T T35 has been found.
*
* @param bytes {Uint8Array} the bytes of a SEI NAL unit
* @return {object} the parsed SEI payload
* @see Rec. ITU-T H.264, 7.3.2.3.1
*/
var parseSei = function(bytes) {
var
i = 0,
result = {
payloadType: -1,
payloadSize: 0
},
payloadType = 0,
payloadSize = 0;
// go through the sei_rbsp parsing each each individual sei_message
while (i < bytes.byteLength) {
// stop once we have hit the end of the sei_rbsp
if (bytes[i] === RBSP_TRAILING_BITS) {
break;
}
// Parse payload type
while (bytes[i] === 0xFF) {
payloadType += 255;
i++;
}
payloadType += bytes[i++];
// Parse payload size
while (bytes[i] === 0xFF) {
payloadSize += 255;
i++;
}
payloadSize += bytes[i++];
// this sei_message is a 608/708 caption so save it and break
// there can only ever be one caption message in a frame's sei
if (!result.payload && payloadType === USER_DATA_REGISTERED_ITU_T_T35) {
result.payloadType = payloadType;
result.payloadSize = payloadSize;
result.payload = bytes.subarray(i, i + payloadSize);
break;
}
// skip the payload and parse the next message
i += payloadSize;
payloadType = 0;
payloadSize = 0;
}
return result;
};
// see ANSI/SCTE 128-1 (2013), section 8.1
var parseUserData = function(sei) {
// itu_t_t35_contry_code must be 181 (United States) for
// captions
if (sei.payload[0] !== 181) {
return null;
}
// itu_t_t35_provider_code should be 49 (ATSC) for captions
if (((sei.payload[1] << 8) | sei.payload[2]) !== 49) {
return null;
}
// the user_identifier should be "GA94" to indicate ATSC1 data
if (String.fromCharCode(sei.payload[3],
sei.payload[4],
sei.payload[5],
sei.payload[6]) !== 'GA94') {
return null;
}
// finally, user_data_type_code should be 0x03 for caption data
if (sei.payload[7] !== 0x03) {
return null;
}
// return the user_data_type_structure and strip the trailing
// marker bits
return sei.payload.subarray(8, sei.payload.length - 1);
};
// see CEA-708-D, section 4.4
var parseCaptionPackets = function(pts, userData) {
var results = [], i, count, offset, data;
// if this is just filler, return immediately
if (!(userData[0] & 0x40)) {
return results;
}
// parse out the cc_data_1 and cc_data_2 fields
count = userData[0] & 0x1f;
for (i = 0; i < count; i++) {
offset = i * 3;
data = {
type: userData[offset + 2] & 0x03,
pts: pts
};
// capture cc data when cc_valid is 1
if (userData[offset + 2] & 0x04) {
data.ccData = (userData[offset + 3] << 8) | userData[offset + 4];
results.push(data);
}
}
return results;
};
var CaptionStream = function() {
CaptionStream.prototype.init.call(this);
this.captionPackets_ = [];
this.ccStreams_ = [
new Cea608Stream(0, 0), // eslint-disable-line no-use-before-define
new Cea608Stream(0, 1), // eslint-disable-line no-use-before-define
new Cea608Stream(1, 0), // eslint-disable-line no-use-before-define
new Cea608Stream(1, 1) // eslint-disable-line no-use-before-define
];
this.reset();
// forward data and done events from CCs to this CaptionStream
this.ccStreams_.forEach(function(cc) {
cc.on('data', this.trigger.bind(this, 'data'));
cc.on('done', this.trigger.bind(this, 'done'));
}, this);
};
CaptionStream.prototype = new Stream();
CaptionStream.prototype.push = function(event) {
var sei, userData;
// only examine SEI NALs
if (event.nalUnitType !== 'sei_rbsp') {
return;
}
// parse the sei
sei = parseSei(event.escapedRBSP);
// ignore everything but user_data_registered_itu_t_t35
if (sei.payloadType !== USER_DATA_REGISTERED_ITU_T_T35) {
return;
}
// parse out the user data payload
userData = parseUserData(sei);
// ignore unrecognized userData
if (!userData) {
return;
}
// Sometimes, the same segment # will be downloaded twice. To stop the
// caption data from being processed twice, we track the latest dts we've
// received and ignore everything with a dts before that. However, since
// data for a specific dts can be split across 2 packets on either side of
// a segment boundary, we need to make sure we *don't* ignore the second
// dts packet we receive that has dts === this.latestDts_. And thus, the
// ignoreNextEqualDts_ flag was born.
if (event.dts < this.latestDts_) {
// We've started getting older data, so set the flag.
this.ignoreNextEqualDts_ = true;
return;
} else if ((event.dts === this.latestDts_) && (this.ignoreNextEqualDts_)) {
// We've received the last duplicate packet, time to start processing again
this.ignoreNextEqualDts_ = false;
return;
}
// parse out CC data packets and save them for later
this.captionPackets_ = this.captionPackets_.concat(parseCaptionPackets(event.pts, userData));
this.latestDts_ = event.dts;
};
CaptionStream.prototype.flush = function() {
// make sure we actually parsed captions before proceeding
if (!this.captionPackets_.length) {
this.ccStreams_.forEach(function(cc) {
cc.flush();
}, this);
return;
}
// In Chrome, the Array#sort function is not stable so add a
// presortIndex that we can use to ensure we get a stable-sort
this.captionPackets_.forEach(function(elem, idx) {
elem.presortIndex = idx;
});
// sort caption byte-pairs based on their PTS values
this.captionPackets_.sort(function(a, b) {
if (a.pts === b.pts) {
return a.presortIndex - b.presortIndex;
}
return a.pts - b.pts;
});
this.captionPackets_.forEach(function(packet) {
if (packet.type < 2) {
// Dispatch packet to the right Cea608Stream
this.dispatchCea608Packet(packet);
}
// this is where an 'else' would go for a dispatching packets
// to a theoretical Cea708Stream that handles SERVICEn data
}, this);
this.captionPackets_.length = 0;
this.ccStreams_.forEach(function(cc) {
cc.flush();
}, this);
return;
};
CaptionStream.prototype.reset = function() {
this.latestDts_ = null;
this.ignoreNextEqualDts_ = false;
this.activeCea608Channel_ = [null, null];
this.ccStreams_.forEach(function(ccStream) {
ccStream.reset();
});
};
CaptionStream.prototype.dispatchCea608Packet = function(packet) {
// NOTE: packet.type is the CEA608 field
if (this.setsChannel1Active(packet)) {
this.activeCea608Channel_[packet.type] = 0;
} else if (this.setsChannel2Active(packet)) {
this.activeCea608Channel_[packet.type] = 1;
}
if (this.activeCea608Channel_[packet.type] === null) {
// If we haven't received anything to set the active channel, discard the
// data; we don't want jumbled captions
return;
}
this.ccStreams_[(packet.type << 1) + this.activeCea608Channel_[packet.type]].push(packet);
};
CaptionStream.prototype.setsChannel1Active = function(packet) {
return ((packet.ccData & 0x7800) === 0x1000);
};
CaptionStream.prototype.setsChannel2Active = function(packet) {
return ((packet.ccData & 0x7800) === 0x1800);
};
// ----------------------
// Session to Application
// ----------------------
var CHARACTER_TRANSLATION = {
0x2a: 0xe1, // á
0x5c: 0xe9, // é
0x5e: 0xed, // í
0x5f: 0xf3, // ó
0x60: 0xfa, // ú
0x7b: 0xe7, // ç
0x7c: 0xf7, // ÷
0x7d: 0xd1, // Ñ
0x7e: 0xf1, // ñ
0x7f: 0x2588, // █
0x0130: 0xae, // ®
0x0131: 0xb0, // °
0x0132: 0xbd, // ½
0x0133: 0xbf, // ¿
0x0134: 0x2122, // ™
0x0135: 0xa2, // ¢
0x0136: 0xa3, // £
0x0137: 0x266a, // ♪
0x0138: 0xe0, // à
0x0139: 0xa0, //
0x013a: 0xe8, // è
0x013b: 0xe2, // â
0x013c: 0xea, // ê
0x013d: 0xee, // î
0x013e: 0xf4, // ô
0x013f: 0xfb, // û
0x0220: 0xc1, // Á
0x0221: 0xc9, // É
0x0222: 0xd3, // Ó
0x0223: 0xda, // Ú
0x0224: 0xdc, // Ü
0x0225: 0xfc, // ü
0x0226: 0x2018, // ‘
0x0227: 0xa1, // ¡
0x0228: 0x2a, // *
0x0229: 0x27, // '
0x022a: 0x2014, // —
0x022b: 0xa9, // ©
0x022c: 0x2120, // ℠
0x022d: 0x2022, // •
0x022e: 0x201c, // “
0x022f: 0x201d, // ”
0x0230: 0xc0, // À
0x0231: 0xc2, // Â
0x0232: 0xc7, // Ç
0x0233: 0xc8, // È
0x0234: 0xca, // Ê
0x0235: 0xcb, // Ë
0x0236: 0xeb, // ë
0x0237: 0xce, // Î
0x0238: 0xcf, // Ï
0x0239: 0xef, // ï
0x023a: 0xd4, // Ô
0x023b: 0xd9, // Ù
0x023c: 0xf9, // ù
0x023d: 0xdb, // Û
0x023e: 0xab, // «
0x023f: 0xbb, // »
0x0320: 0xc3, // Ã
0x0321: 0xe3, // ã
0x0322: 0xcd, // Í
0x0323: 0xcc, // Ì
0x0324: 0xec, // ì
0x0325: 0xd2, // Ò
0x0326: 0xf2, // ò
0x0327: 0xd5, // Õ
0x0328: 0xf5, // õ
0x0329: 0x7b, // {
0x032a: 0x7d, // }
0x032b: 0x5c, // \
0x032c: 0x5e, // ^
0x032d: 0x5f, // _
0x032e: 0x7c, // |
0x032f: 0x7e, // ~
0x0330: 0xc4, // Ä
0x0331: 0xe4, // ä
0x0332: 0xd6, // Ö
0x0333: 0xf6, // ö
0x0334: 0xdf, // ß
0x0335: 0xa5, // ¥
0x0336: 0xa4, // ¤
0x0337: 0x2502, // │
0x0338: 0xc5, // Å
0x0339: 0xe5, // å
0x033a: 0xd8, // Ø
0x033b: 0xf8, // ø
0x033c: 0x250c, // ┌
0x033d: 0x2510, // ┐
0x033e: 0x2514, // └
0x033f: 0x2518 // ┘
};
var getCharFromCode = function(code) {
if (code === null) {
return '';
}
code = CHARACTER_TRANSLATION[code] || code;
return String.fromCharCode(code);
};
// the index of the last row in a CEA-608 display buffer
var BOTTOM_ROW = 14;
// This array is used for mapping PACs -> row #, since there's no way of
// getting it through bit logic.
var ROWS = [0x1100, 0x1120, 0x1200, 0x1220, 0x1500, 0x1520, 0x1600, 0x1620,
0x1700, 0x1720, 0x1000, 0x1300, 0x1320, 0x1400, 0x1420];
// CEA-608 captions are rendered onto a 34x15 matrix of character
// cells. The "bottom" row is the last element in the outer array.
var createDisplayBuffer = function() {
var result = [], i = BOTTOM_ROW + 1;
while (i--) {
result.push('');
}
return result;
};
var Cea608Stream = function(field, dataChannel) {
Cea608Stream.prototype.init.call(this);
this.field_ = field || 0;
this.dataChannel_ = dataChannel || 0;
this.name_ = 'CC' + (((this.field_ << 1) | this.dataChannel_) + 1);
this.setConstants();
this.reset();
this.push = function(packet) {
var data, swap, char0, char1, text;
// remove the parity bits
data = packet.ccData & 0x7f7f;
// ignore duplicate control codes; the spec demands they're sent twice
if (data === this.lastControlCode_) {
this.lastControlCode_ = null;
return;
}
// Store control codes
if ((data & 0xf000) === 0x1000) {
this.lastControlCode_ = data;
} else if (data !== this.PADDING_) {
this.lastControlCode_ = null;
}
char0 = data >>> 8;
char1 = data & 0xff;
if (data === this.PADDING_) {
return;
} else if (data === this.RESUME_CAPTION_LOADING_) {
this.mode_ = 'popOn';
} else if (data === this.END_OF_CAPTION_) {
this.clearFormatting(packet.pts);
// if a caption was being displayed, it's gone now
this.flushDisplayed(packet.pts);
// flip memory
swap = this.displayed_;
this.displayed_ = this.nonDisplayed_;
this.nonDisplayed_ = swap;
// start measuring the time to display the caption
this.startPts_ = packet.pts;
} else if (data === this.ROLL_UP_2_ROWS_) {
this.topRow_ = BOTTOM_ROW - 1;
this.mode_ = 'rollUp';
} else if (data === this.ROLL_UP_3_ROWS_) {
this.topRow_ = BOTTOM_ROW - 2;
this.mode_ = 'rollUp';
} else if (data === this.ROLL_UP_4_ROWS_) {
this.topRow_ = BOTTOM_ROW - 3;
this.mode_ = 'rollUp';
} else if (data === this.CARRIAGE_RETURN_) {
this.clearFormatting(packet.pts);
this.flushDisplayed(packet.pts);
this.shiftRowsUp_();
this.startPts_ = packet.pts;
} else if (data === this.BACKSPACE_) {
if (this.mode_ === 'popOn') {
this.nonDisplayed_[BOTTOM_ROW] = this.nonDisplayed_[BOTTOM_ROW].slice(0, -1);
} else {
this.displayed_[BOTTOM_ROW] = this.displayed_[BOTTOM_ROW].slice(0, -1);
}
} else if (data === this.ERASE_DISPLAYED_MEMORY_) {
this.flushDisplayed(packet.pts);
this.displayed_ = createDisplayBuffer();
} else if (data === this.ERASE_NON_DISPLAYED_MEMORY_) {
this.nonDisplayed_ = createDisplayBuffer();
} else if (data === this.RESUME_DIRECT_CAPTIONING_) {
this.mode_ = 'paintOn';
// Append special characters to caption text
} else if (this.isSpecialCharacter(char0, char1)) {
// Bitmask char0 so that we can apply character transformations
// regardless of field and data channel.
// Then byte-shift to the left and OR with char1 so we can pass the
// entire character code to `getCharFromCode`.
char0 = (char0 & 0x03) << 8;
text = getCharFromCode(char0 | char1);
this[this.mode_](packet.pts, text);
this.column_++;
// Append extended characters to caption text
} else if (this.isExtCharacter(char0, char1)) {
// Extended characters always follow their "non-extended" equivalents.
// IE if a "è" is desired, you'll always receive "eè"; non-compliant
// decoders are supposed to drop the "è", while compliant decoders
// backspace the "e" and insert "è".
// Delete the previous character
if (this.mode_ === 'popOn') {
this.nonDisplayed_[this.row_] = this.nonDisplayed_[this.row_].slice(0, -1);
} else {
this.displayed_[BOTTOM_ROW] = this.displayed_[BOTTOM_ROW].slice(0, -1);
}
// Bitmask char0 so that we can apply character transformations
// regardless of field and data channel.
// Then byte-shift to the left and OR with char1 so we can pass the
// entire character code to `getCharFromCode`.
char0 = (char0 & 0x03) << 8;
text = getCharFromCode(char0 | char1);
this[this.mode_](packet.pts, text);
this.column_++;
// Process mid-row codes
} else if (this.isMidRowCode(char0, char1)) {
// Attributes are not additive, so clear all formatting
this.clearFormatting(packet.pts);
// According to the standard, mid-row codes
// should be replaced with spaces, so add one now
this[this.mode_](packet.pts, ' ');
this.column_++;
if ((char1 & 0xe) === 0xe) {
this.addFormatting(packet.pts, ['i']);
}
if ((char1 & 0x1) === 0x1) {
this.addFormatting(packet.pts, ['u']);
}
// Detect offset control codes and adjust cursor
} else if (this.isOffsetControlCode(char0, char1)) {
// Cursor position is set by indent PAC (see below) in 4-column
// increments, with an additional offset code of 1-3 to reach any
// of the 32 columns specified by CEA-608. So all we need to do
// here is increment the column cursor by the given offset.
this.column_ += (char1 & 0x03);
// Detect PACs (Preamble Address Codes)
} else if (this.isPAC(char0, char1)) {
// There's no logic for PAC -> row mapping, so we have to just
// find the row code in an array and use its index :(
var row = ROWS.indexOf(data & 0x1f20);
if (row !== this.row_) {
// formatting is only persistent for current row
this.clearFormatting(packet.pts);
this.row_ = row;
}
// All PACs can apply underline, so detect and apply
// (All odd-numbered second bytes set underline)
if ((char1 & 0x1) && (this.formatting_.indexOf('u') === -1)) {
this.addFormatting(packet.pts, ['u']);
}
if ((data & 0x10) === 0x10) {
// We've got an indent level code. Each successive even number
// increments the column cursor by 4, so we can get the desired
// column position by bit-shifting to the right (to get n/2)
// and multiplying by 4.
this.column_ = ((data & 0xe) >> 1) * 4;
}
if (this.isColorPAC(char1)) {
// it's a color code, though we only support white, which
// can be either normal or italicized. white italics can be
// either 0x4e or 0x6e depending on the row, so we just
// bitwise-and with 0xe to see if italics should be turned on
if ((char1 & 0xe) === 0xe) {
this.addFormatting(packet.pts, ['i']);
}
}
// We have a normal character in char0, and possibly one in char1
} else if (this.isNormalChar(char0)) {
if (char1 === 0x00) {
char1 = null;
}
text = getCharFromCode(char0);
text += getCharFromCode(char1);
this[this.mode_](packet.pts, text);
this.column_ += text.length;
} // finish data processing
};
};
Cea608Stream.prototype = new Stream();
// Trigger a cue point that captures the current state of the
// display buffer
Cea608Stream.prototype.flushDisplayed = function(pts) {
var content = this.displayed_
// remove spaces from the start and end of the string
.map(function(row) {
return row.trim();
})
// combine all text rows to display in one cue
.join('\n')
// and remove blank rows from the start and end, but not the middle
.replace(/^\n+|\n+$/g, '');
if (content.length) {
this.trigger('data', {
startPts: this.startPts_,
endPts: pts,
text: content,
stream: this.name_
});
}
};
/**
* Zero out the data, used for startup and on seek
*/
Cea608Stream.prototype.reset = function() {
this.mode_ = 'popOn';
// When in roll-up mode, the index of the last row that will
// actually display captions. If a caption is shifted to a row
// with a lower index than this, it is cleared from the display
// buffer
this.topRow_ = 0;
this.startPts_ = 0;
this.displayed_ = createDisplayBuffer();
this.nonDisplayed_ = createDisplayBuffer();
this.lastControlCode_ = null;
// Track row and column for proper line-breaking and spacing
this.column_ = 0;
this.row_ = BOTTOM_ROW;
// This variable holds currently-applied formatting
this.formatting_ = [];
};
/**
* Sets up control code and related constants for this instance
*/
Cea608Stream.prototype.setConstants = function() {
// The following attributes have these uses:
// ext_ : char0 for mid-row codes, and the base for extended
// chars (ext_+0, ext_+1, and ext_+2 are char0s for
// extended codes)
// control_: char0 for control codes, except byte-shifted to the
// left so that we can do this.control_ | CONTROL_CODE
// offset_: char0 for tab offset codes
//
// It's also worth noting that control codes, and _only_ control codes,
// differ between field 1 and field2. Field 2 control codes are always
// their field 1 value plus 1. That's why there's the "| field" on the
// control value.
if (this.dataChannel_ === 0) {
this.BASE_ = 0x10;
this.EXT_ = 0x11;
this.CONTROL_ = (0x14 | this.field_) << 8;
this.OFFSET_ = 0x17;
} else if (this.dataChannel_ === 1) {
this.BASE_ = 0x18;
this.EXT_ = 0x19;
this.CONTROL_ = (0x1c | this.field_) << 8;
this.OFFSET_ = 0x1f;
}
// Constants for the LSByte command codes recognized by Cea608Stream. This
// list is not exhaustive. For a more comprehensive listing and semantics see
// http://www.gpo.gov/fdsys/pkg/CFR-2010-title47-vol1/pdf/CFR-2010-title47-vol1-sec15-119.pdf
// Padding
this.PADDING_ = 0x0000;
// Pop-on Mode
this.RESUME_CAPTION_LOADING_ = this.CONTROL_ | 0x20;
this.END_OF_CAPTION_ = this.CONTROL_ | 0x2f;
// Roll-up Mode
this.ROLL_UP_2_ROWS_ = this.CONTROL_ | 0x25;
this.ROLL_UP_3_ROWS_ = this.CONTROL_ | 0x26;
this.ROLL_UP_4_ROWS_ = this.CONTROL_ | 0x27;
this.CARRIAGE_RETURN_ = this.CONTROL_ | 0x2d;
// paint-on mode (not supported)
this.RESUME_DIRECT_CAPTIONING_ = this.CONTROL_ | 0x29;
// Erasure
this.BACKSPACE_ = this.CONTROL_ | 0x21;
this.ERASE_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2c;
this.ERASE_NON_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2e;
};
/**
* Detects if the 2-byte packet data is a special character
*
* Special characters have a second byte in the range 0x30 to 0x3f,
* with the first byte being 0x11 (for data channel 1) or 0x19 (for
* data channel 2).
*
* @param {Integer} char0 The first byte
* @param {Integer} char1 The second byte
* @return {Boolean} Whether the 2 bytes are an special character
*/
Cea608Stream.prototype.isSpecialCharacter = function(char0, char1) {
return (char0 === this.EXT_ && char1 >= 0x30 && char1 <= 0x3f);
};
/**
* Detects if the 2-byte packet data is an extended character
*
* Extended characters have a second byte in the range 0x20 to 0x3f,
* with the first byte being 0x12 or 0x13 (for data channel 1) or
* 0x1a or 0x1b (for data channel 2).
*
* @param {Integer} char0 The first byte
* @param {Integer} char1 The second byte
* @return {Boolean} Whether the 2 bytes are an extended character
*/
Cea608Stream.prototype.isExtCharacter = function(char0, char1) {
return ((char0 === (this.EXT_ + 1) || char0 === (this.EXT_ + 2)) &&
(char1 >= 0x20 && char1 <= 0x3f));
};
/**
* Detects if the 2-byte packet is a mid-row code
*
* Mid-row codes have a second byte in the range 0x20 to 0x2f, with
* the first byte being 0x11 (for data channel 1) or 0x19 (for data
* channel 2).
*
* @param {Integer} char0 The first byte
* @param {Integer} char1 The second byte
* @return {Boolean} Whether the 2 bytes are a mid-row code
*/
Cea608Stream.prototype.isMidRowCode = function(char0, char1) {
return (char0 === this.EXT_ && (char1 >= 0x20 && char1 <= 0x2f));
};
/**
* Detects if the 2-byte packet is an offset control code
*
* Offset control codes have a second byte in the range 0x21 to 0x23,
* with the first byte being 0x17 (for data channel 1) or 0x1f (for
* data channel 2).
*
* @param {Integer} char0 The first byte
* @param {Integer} char1 The second byte
* @return {Boolean} Whether the 2 bytes are an offset control code
*/
Cea608Stream.prototype.isOffsetControlCode = function(char0, char1) {
return (char0 === this.OFFSET_ && (char1 >= 0x21 && char1 <= 0x23));
};
/**
* Detects if the 2-byte packet is a Preamble Address Code
*
* PACs have a first byte in the range 0x10 to 0x17 (for data channel 1)
* or 0x18 to 0x1f (for data channel 2), with the second byte in the
* range 0x40 to 0x7f.
*
* @param {Integer} char0 The first byte
* @param {Integer} char1 The second byte
* @return {Boolean} Whether the 2 bytes are a PAC
*/
Cea608Stream.prototype.isPAC = function(char0, char1) {
return (char0 >= this.BASE_ && char0 < (this.BASE_ + 8) &&
(char1 >= 0x40 && char1 <= 0x7f));
};
/**
* Detects if a packet's second byte is in the range of a PAC color code
*
* PAC color codes have the second byte be in the range 0x40 to 0x4f, or
* 0x60 to 0x6f.
*
* @param {Integer} char1 The second byte
* @return {Boolean} Whether the byte is a color PAC
*/
Cea608Stream.prototype.isColorPAC = function(char1) {
return ((char1 >= 0x40 && char1 <= 0x4f) || (char1 >= 0x60 && char1 <= 0x7f));
};
/**
* Detects if a single byte is in the range of a normal character
*
* Normal text bytes are in the range 0x20 to 0x7f.
*
* @param {Integer} char The byte
* @return {Boolean} Whether the byte is a normal character
*/
Cea608Stream.prototype.isNormalChar = function(char) {
return (char >= 0x20 && char <= 0x7f);
};
// Adds the opening HTML tag for the passed character to the caption text,
// and keeps track of it for later closing
Cea608Stream.prototype.addFormatting = function(pts, format) {
this.formatting_ = this.formatting_.concat(format);
var text = format.reduce(function(text, format) {
return text + '<' + format + '>';
}, '');
this[this.mode_](pts, text);
};
// Adds HTML closing tags for current formatting to caption text and
// clears remembered formatting
Cea608Stream.prototype.clearFormatting = function(pts) {
if (!this.formatting_.length) {
return;
}
var text = this.formatting_.reverse().reduce(function(text, format) {
return text + '</' + format + '>';
}, '');
this.formatting_ = [];
this[this.mode_](pts, text);
};
// Mode Implementations
Cea608Stream.prototype.popOn = function(pts, text) {
var baseRow = this.nonDisplayed_[this.row_];
// buffer characters
baseRow += text;
this.nonDisplayed_[this.row_] = baseRow;
};
Cea608Stream.prototype.rollUp = function(pts, text) {
var baseRow = this.displayed_[BOTTOM_ROW];
baseRow += text;
this.displayed_[BOTTOM_ROW] = baseRow;
};
Cea608Stream.prototype.shiftRowsUp_ = function() {
var i;
// clear out inactive rows
for (i = 0; i < this.topRow_; i++) {
this.displayed_[i] = '';
}
// shift displayed rows up
for (i = this.topRow_; i < BOTTOM_ROW; i++) {
this.displayed_[i] = this.displayed_[i + 1];
}
// clear out the bottom row
this.displayed_[BOTTOM_ROW] = '';
};
// paintOn mode is not implemented
Cea608Stream.prototype.paintOn = function() {};
// exports
module.exports = {
CaptionStream: CaptionStream,
Cea608Stream: Cea608Stream
};
},{"../utils/stream":33}],18:[function(require,module,exports){
module.exports = require('./m2ts');
},{"./m2ts":19}],19:[function(require,module,exports){
/**
* mux.js
*
* Copyright (c) 2015 Brightcove
* All rights reserved.
*
* A stream-based mp2t to mp4 converter. This utility can be used to
* deliver mp4s to a SourceBuffer on platforms that support native
* Media Source Extensions.
*/
'use strict';
var Stream = require('../utils/stream.js'),
CaptionStream = require('./caption-stream'),
StreamTypes = require('./stream-types'),
TimestampRolloverStream = require('./timestamp-rollover-stream').TimestampRolloverStream;
var m2tsStreamTypes = require('./stream-types.js');
// object types
var TransportPacketStream, TransportParseStream, ElementaryStream;
// constants
var
MP2T_PACKET_LENGTH = 188, // bytes
SYNC_BYTE = 0x47;
/**
* Splits an incoming stream of binary data into MPEG-2 Transport
* Stream packets.
*/
TransportPacketStream = function() {
var
buffer = new Uint8Array(MP2T_PACKET_LENGTH),
bytesInBuffer = 0;
TransportPacketStream.prototype.init.call(this);
// Deliver new bytes to the stream.
this.push = function(bytes) {
var
startIndex = 0,
endIndex = MP2T_PACKET_LENGTH,
everything;
// If there are bytes remaining from the last segment, prepend them to the
// bytes that were pushed in
if (bytesInBuffer) {
everything = new Uint8Array(bytes.byteLength + bytesInBuffer);
everything.set(buffer.subarray(0, bytesInBuffer));
everything.set(bytes, bytesInBuffer);
bytesInBuffer = 0;
} else {
everything = bytes;
}
// While we have enough data for a packet
while (endIndex < everything.byteLength) {
// Look for a pair of start and end sync bytes in the data..
if (everything[startIndex] === SYNC_BYTE && everything[endIndex] === SYNC_BYTE) {
// We found a packet so emit it and jump one whole packet forward in
// the stream
this.trigger('data', everything.subarray(startIndex, endIndex));
startIndex += MP2T_PACKET_LENGTH;
endIndex += MP2T_PACKET_LENGTH;
continue;
}
// If we get here, we have somehow become de-synchronized and we need to step
// forward one byte at a time until we find a pair of sync bytes that denote
// a packet
startIndex++;
endIndex++;
}
// If there was some data left over at the end of the segment that couldn't
// possibly be a whole packet, keep it because it might be the start of a packet
// that continues in the next segment
if (startIndex < everything.byteLength) {
buffer.set(everything.subarray(startIndex), 0);
bytesInBuffer = everything.byteLength - startIndex;
}
};
this.flush = function() {
// If the buffer contains a whole packet when we are being flushed, emit it
// and empty the buffer. Otherwise hold onto the data because it may be
// important for decoding the next segment
if (bytesInBuffer === MP2T_PACKET_LENGTH && buffer[0] === SYNC_BYTE) {
this.trigger('data', buffer);
bytesInBuffer = 0;
}
this.trigger('done');
};
};
TransportPacketStream.prototype = new Stream();
/**
* Accepts an MP2T TransportPacketStream and emits data events with parsed
* forms of the individual transport stream packets.
*/
TransportParseStream = function() {
var parsePsi, parsePat, parsePmt, self;
TransportParseStream.prototype.init.call(this);
self = this;
this.packetsWaitingForPmt = [];
this.programMapTable = undefined;
parsePsi = function(payload, psi) {
var offset = 0;
// PSI packets may be split into multiple sections and those
// sections may be split into multiple packets. If a PSI
// section starts in this packet, the payload_unit_start_indicator
// will be true and the first byte of the payload will indicate
// the offset from the current position to the start of the
// section.
if (psi.payloadUnitStartIndicator) {
offset += payload[offset] + 1;
}
if (psi.type === 'pat') {
parsePat(payload.subarray(offset), psi);
} else {
parsePmt(payload.subarray(offset), psi);
}
};
parsePat = function(payload, pat) {
pat.section_number = payload[7]; // eslint-disable-line camelcase
pat.last_section_number = payload[8]; // eslint-disable-line camelcase
// skip the PSI header and parse the first PMT entry
self.pmtPid = (payload[10] & 0x1F) << 8 | payload[11];
pat.pmtPid = self.pmtPid;
};
/**
* Parse out the relevant fields of a Program Map Table (PMT).
* @param payload {Uint8Array} the PMT-specific portion of an MP2T
* packet. The first byte in this array should be the table_id
* field.
* @param pmt {object} the object that should be decorated with
* fields parsed from the PMT.
*/
parsePmt = function(payload, pmt) {
var sectionLength, tableEnd, programInfoLength, offset;
// PMTs can be sent ahead of the time when they should actually
// take effect. We don't believe this should ever be the case
// for HLS but we'll ignore "forward" PMT declarations if we see
// them. Future PMT declarations have the current_next_indicator
// set to zero.
if (!(payload[5] & 0x01)) {
return;
}
// overwrite any existing program map table
self.programMapTable = {
video: null,
audio: null,
'timed-metadata': {}
};
// the mapping table ends at the end of the current section
sectionLength = (payload[1] & 0x0f) << 8 | payload[2];
tableEnd = 3 + sectionLength - 4;
// to determine where the table is, we have to figure out how
// long the program info descriptors are
programInfoLength = (payload[10] & 0x0f) << 8 | payload[11];
// advance the offset to the first entry in the mapping table
offset = 12 + programInfoLength;
while (offset < tableEnd) {
var streamType = payload[offset];
var pid = (payload[offset + 1] & 0x1F) << 8 | payload[offset + 2];
// only map a single elementary_pid for audio and video stream types
// TODO: should this be done for metadata too? for now maintain behavior of
// multiple metadata streams
if (streamType === StreamTypes.H264_STREAM_TYPE &&
self.programMapTable.video === null) {
self.programMapTable.video = pid;
} else if (streamType === StreamTypes.ADTS_STREAM_TYPE &&
self.programMapTable.audio === null) {
self.programMapTable.audio = pid;
} else if (streamType === StreamTypes.METADATA_STREAM_TYPE) {
// map pid to stream type for metadata streams
self.programMapTable['timed-metadata'][pid] = streamType;
}
// move to the next table entry
// skip past the elementary stream descriptors, if present
offset += ((payload[offset + 3] & 0x0F) << 8 | payload[offset + 4]) + 5;
}
// record the map on the packet as well
pmt.programMapTable = self.programMapTable;
};
/**
* Deliver a new MP2T packet to the stream.
*/
this.push = function(packet) {
var
result = {},
offset = 4;
result.payloadUnitStartIndicator = !!(packet[1] & 0x40);
// pid is a 13-bit field starting at the last bit of packet[1]
result.pid = packet[1] & 0x1f;
result.pid <<= 8;
result.pid |= packet[2];
// if an adaption field is present, its length is specified by the
// fifth byte of the TS packet header. The adaptation field is
// used to add stuffing to PES packets that don't fill a complete
// TS packet, and to specify some forms of timing and control data
// that we do not currently use.
if (((packet[3] & 0x30) >>> 4) > 0x01) {
offset += packet[offset] + 1;
}
// parse the rest of the packet based on the type
if (result.pid === 0) {
result.type = 'pat';
parsePsi(packet.subarray(offset), result);
this.trigger('data', result);
} else if (result.pid === this.pmtPid) {
result.type = 'pmt';
parsePsi(packet.subarray(offset), result);
this.trigger('data', result);
// if there are any packets waiting for a PMT to be found, process them now
while (this.packetsWaitingForPmt.length) {
this.processPes_.apply(this, this.packetsWaitingForPmt.shift());
}
} else if (this.programMapTable === undefined) {
// When we have not seen a PMT yet, defer further processing of
// PES packets until one has been parsed
this.packetsWaitingForPmt.push([packet, offset, result]);
} else {
this.processPes_(packet, offset, result);
}
};
this.processPes_ = function(packet, offset, result) {
// set the appropriate stream type
if (result.pid === this.programMapTable.video) {
result.streamType = StreamTypes.H264_STREAM_TYPE;
} else if (result.pid === this.programMapTable.audio) {
result.streamType = StreamTypes.ADTS_STREAM_TYPE;
} else {
// if not video or audio, it is timed-metadata or unknown
// if unknown, streamType will be undefined
result.streamType = this.programMapTable['timed-metadata'][result.pid];
}
result.type = 'pes';
result.data = packet.subarray(offset);
this.trigger('data', result);
};
};
TransportParseStream.prototype = new Stream();
TransportParseStream.STREAM_TYPES = {
h264: 0x1b,
adts: 0x0f
};
/**
* Reconsistutes program elementary stream (PES) packets from parsed
* transport stream packets. That is, if you pipe an
* mp2t.TransportParseStream into a mp2t.ElementaryStream, the output
* events will be events which capture the bytes for individual PES
* packets plus relevant metadata that has been extracted from the
* container.
*/
ElementaryStream = function() {
var
self = this,
// PES packet fragments
video = {
data: [],
size: 0
},
audio = {
data: [],
size: 0
},
timedMetadata = {
data: [],
size: 0
},
parsePes = function(payload, pes) {
var ptsDtsFlags;
// get the packet length, this will be 0 for video
pes.packetLength = 6 + ((payload[4] << 8) | payload[5]);
// find out if this packets starts a new keyframe
pes.dataAlignmentIndicator = (payload[6] & 0x04) !== 0;
// PES packets may be annotated with a PTS value, or a PTS value
// and a DTS value. Determine what combination of values is
// available to work with.
ptsDtsFlags = payload[7];
// PTS and DTS are normally stored as a 33-bit number. Javascript
// performs all bitwise operations on 32-bit integers but javascript
// supports a much greater range (52-bits) of integer using standard
// mathematical operations.
// We construct a 31-bit value using bitwise operators over the 31
// most significant bits and then multiply by 4 (equal to a left-shift
// of 2) before we add the final 2 least significant bits of the
// timestamp (equal to an OR.)
if (ptsDtsFlags & 0xC0) {
// the PTS and DTS are not written out directly. For information
// on how they are encoded, see
// http://dvd.sourceforge.net/dvdinfo/pes-hdr.html
pes.pts = (payload[9] & 0x0E) << 27 |
(payload[10] & 0xFF) << 20 |
(payload[11] & 0xFE) << 12 |
(payload[12] & 0xFF) << 5 |
(payload[13] & 0xFE) >>> 3;
pes.pts *= 4; // Left shift by 2
pes.pts += (payload[13] & 0x06) >>> 1; // OR by the two LSBs
pes.dts = pes.pts;
if (ptsDtsFlags & 0x40) {
pes.dts = (payload[14] & 0x0E) << 27 |
(payload[15] & 0xFF) << 20 |
(payload[16] & 0xFE) << 12 |
(payload[17] & 0xFF) << 5 |
(payload[18] & 0xFE) >>> 3;
pes.dts *= 4; // Left shift by 2
pes.dts += (payload[18] & 0x06) >>> 1; // OR by the two LSBs
}
}
// the data section starts immediately after the PES header.
// pes_header_data_length specifies the number of header bytes
// that follow the last byte of the field.
pes.data = payload.subarray(9 + payload[8]);
},
flushStream = function(stream, type, forceFlush) {
var
packetData = new Uint8Array(stream.size),
event = {
type: type
},
i = 0,
offset = 0,
packetFlushable = false,
fragment;
// do nothing if there is not enough buffered data for a complete
// PES header
if (!stream.data.length || stream.size < 9) {
return;
}
event.trackId = stream.data[0].pid;
// reassemble the packet
for (i = 0; i < stream.data.length; i++) {
fragment = stream.data[i];
packetData.set(fragment.data, offset);
offset += fragment.data.byteLength;
}
// parse assembled packet's PES header
parsePes(packetData, event);
// non-video PES packets MUST have a non-zero PES_packet_length
// check that there is enough stream data to fill the packet
packetFlushable = type === 'video' || event.packetLength <= stream.size;
// flush pending packets if the conditions are right
if (forceFlush || packetFlushable) {
stream.size = 0;
stream.data.length = 0;
}
// only emit packets that are complete. this is to avoid assembling
// incomplete PES packets due to poor segmentation
if (packetFlushable) {
self.trigger('data', event);
}
};
ElementaryStream.prototype.init.call(this);
this.push = function(data) {
({
pat: function() {
// we have to wait for the PMT to arrive as well before we
// have any meaningful metadata
},
pes: function() {
var stream, streamType;
switch (data.streamType) {
case StreamTypes.H264_STREAM_TYPE:
case m2tsStreamTypes.H264_STREAM_TYPE:
stream = video;
streamType = 'video';
break;
case StreamTypes.ADTS_STREAM_TYPE:
stream = audio;
streamType = 'audio';
break;
case StreamTypes.METADATA_STREAM_TYPE:
stream = timedMetadata;
streamType = 'timed-metadata';
break;
default:
// ignore unknown stream types
return;
}
// if a new packet is starting, we can flush the completed
// packet
if (data.payloadUnitStartIndicator) {
flushStream(stream, streamType, true);
}
// buffer this fragment until we are sure we've received the
// complete payload
stream.data.push(data);
stream.size += data.data.byteLength;
},
pmt: function() {
var
event = {
type: 'metadata',
tracks: []
},
programMapTable = data.programMapTable;
// translate audio and video streams to tracks
if (programMapTable.video !== null) {
event.tracks.push({
timelineStartInfo: {
baseMediaDecodeTime: 0
},
id: +programMapTable.video,
codec: 'avc',
type: 'video'
});
}
if (programMapTable.audio !== null) {
event.tracks.push({
timelineStartInfo: {
baseMediaDecodeTime: 0
},
id: +programMapTable.audio,
codec: 'adts',
type: 'audio'
});
}
self.trigger('data', event);
}
})[data.type]();
};
/**
* Flush any remaining input. Video PES packets may be of variable
* length. Normally, the start of a new video packet can trigger the
* finalization of the previous packet. That is not possible if no
* more video is forthcoming, however. In that case, some other
* mechanism (like the end of the file) has to be employed. When it is
* clear that no additional data is forthcoming, calling this method
* will flush the buffered packets.
*/
this.flush = function() {
// !!THIS ORDER IS IMPORTANT!!
// video first then audio
flushStream(video, 'video');
flushStream(audio, 'audio');
flushStream(timedMetadata, 'timed-metadata');
this.trigger('done');
};
};
ElementaryStream.prototype = new Stream();
var m2ts = {
PAT_PID: 0x0000,
MP2T_PACKET_LENGTH: MP2T_PACKET_LENGTH,
TransportPacketStream: TransportPacketStream,
TransportParseStream: TransportParseStream,
ElementaryStream: ElementaryStream,
TimestampRolloverStream: TimestampRolloverStream,
CaptionStream: CaptionStream.CaptionStream,
Cea608Stream: CaptionStream.Cea608Stream,
MetadataStream: require('./metadata-stream')
};
for (var type in StreamTypes) {
if (StreamTypes.hasOwnProperty(type)) {
m2ts[type] = StreamTypes[type];
}
}
module.exports = m2ts;
},{"../utils/stream.js":33,"./caption-stream":17,"./metadata-stream":20,"./stream-types":22,"./stream-types.js":22,"./timestamp-rollover-stream":23}],20:[function(require,module,exports){
/**
* Accepts program elementary stream (PES) data events and parses out
* ID3 metadata from them, if present.
* @see http://id3.org/id3v2.3.0
*/
'use strict';
var
Stream = require('../utils/stream'),
StreamTypes = require('./stream-types'),
// return a percent-encoded representation of the specified byte range
// @see http://en.wikipedia.org/wiki/Percent-encoding
percentEncode = function(bytes, start, end) {
var i, result = '';
for (i = start; i < end; i++) {
result += '%' + ('00' + bytes[i].toString(16)).slice(-2);
}
return result;
},
// return the string representation of the specified byte range,
// interpreted as UTf-8.
parseUtf8 = function(bytes, start, end) {
return decodeURIComponent(percentEncode(bytes, start, end));
},
// return the string representation of the specified byte range,
// interpreted as ISO-8859-1.
parseIso88591 = function(bytes, start, end) {
return unescape(percentEncode(bytes, start, end)); // jshint ignore:line
},
parseSyncSafeInteger = function(data) {
return (data[0] << 21) |
(data[1] << 14) |
(data[2] << 7) |
(data[3]);
},
tagParsers = {
TXXX: function(tag) {
var i;
if (tag.data[0] !== 3) {
// ignore frames with unrecognized character encodings
return;
}
for (i = 1; i < tag.data.length; i++) {
if (tag.data[i] === 0) {
// parse the text fields
tag.description = parseUtf8(tag.data, 1, i);
// do not include the null terminator in the tag value
tag.value = parseUtf8(tag.data, i + 1, tag.data.length).replace(/\0*$/, '');
break;
}
}
tag.data = tag.value;
},
WXXX: function(tag) {
var i;
if (tag.data[0] !== 3) {
// ignore frames with unrecognized character encodings
return;
}
for (i = 1; i < tag.data.length; i++) {
if (tag.data[i] === 0) {
// parse the description and URL fields
tag.description = parseUtf8(tag.data, 1, i);
tag.url = parseUtf8(tag.data, i + 1, tag.data.length);
break;
}
}
},
PRIV: function(tag) {
var i;
for (i = 0; i < tag.data.length; i++) {
if (tag.data[i] === 0) {
// parse the description and URL fields
tag.owner = parseIso88591(tag.data, 0, i);
break;
}
}
tag.privateData = tag.data.subarray(i + 1);
tag.data = tag.privateData;
}
},
MetadataStream;
MetadataStream = function(options) {
var
settings = {
debug: !!(options && options.debug),
// the bytes of the program-level descriptor field in MP2T
// see ISO/IEC 13818-1:2013 (E), section 2.6 "Program and
// program element descriptors"
descriptor: options && options.descriptor
},
// the total size in bytes of the ID3 tag being parsed
tagSize = 0,
// tag data that is not complete enough to be parsed
buffer = [],
// the total number of bytes currently in the buffer
bufferSize = 0,
i;
MetadataStream.prototype.init.call(this);
// calculate the text track in-band metadata track dispatch type
// https://html.spec.whatwg.org/multipage/embedded-content.html#steps-to-expose-a-media-resource-specific-text-track
this.dispatchType = StreamTypes.METADATA_STREAM_TYPE.toString(16);
if (settings.descriptor) {
for (i = 0; i < settings.descriptor.length; i++) {
this.dispatchType += ('00' + settings.descriptor[i].toString(16)).slice(-2);
}
}
this.push = function(chunk) {
var tag, frameStart, frameSize, frame, i, frameHeader;
if (chunk.type !== 'timed-metadata') {
return;
}
// if data_alignment_indicator is set in the PES header,
// we must have the start of a new ID3 tag. Assume anything
// remaining in the buffer was malformed and throw it out
if (chunk.dataAlignmentIndicator) {
bufferSize = 0;
buffer.length = 0;
}
// ignore events that don't look like ID3 data
if (buffer.length === 0 &&
(chunk.data.length < 10 ||
chunk.data[0] !== 'I'.charCodeAt(0) ||
chunk.data[1] !== 'D'.charCodeAt(0) ||
chunk.data[2] !== '3'.charCodeAt(0))) {
if (settings.debug) {
// eslint-disable-next-line no-console
console.log('Skipping unrecognized metadata packet');
}
return;
}
// add this chunk to the data we've collected so far
buffer.push(chunk);
bufferSize += chunk.data.byteLength;
// grab the size of the entire frame from the ID3 header
if (buffer.length === 1) {
// the frame size is transmitted as a 28-bit integer in the
// last four bytes of the ID3 header.
// The most significant bit of each byte is dropped and the
// results concatenated to recover the actual value.
tagSize = parseSyncSafeInteger(chunk.data.subarray(6, 10));
// ID3 reports the tag size excluding the header but it's more
// convenient for our comparisons to include it
tagSize += 10;
}
// if the entire frame has not arrived, wait for more data
if (bufferSize < tagSize) {
return;
}
// collect the entire frame so it can be parsed
tag = {
data: new Uint8Array(tagSize),
frames: [],
pts: buffer[0].pts,
dts: buffer[0].dts
};
for (i = 0; i < tagSize;) {
tag.data.set(buffer[0].data.subarray(0, tagSize - i), i);
i += buffer[0].data.byteLength;
bufferSize -= buffer[0].data.byteLength;
buffer.shift();
}
// find the start of the first frame and the end of the tag
frameStart = 10;
if (tag.data[5] & 0x40) {
// advance the frame start past the extended header
frameStart += 4; // header size field
frameStart += parseSyncSafeInteger(tag.data.subarray(10, 14));
// clip any padding off the end
tagSize -= parseSyncSafeInteger(tag.data.subarray(16, 20));
}
// parse one or more ID3 frames
// http://id3.org/id3v2.3.0#ID3v2_frame_overview
do {
// determine the number of bytes in this frame
frameSize = parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8));
if (frameSize < 1) {
// eslint-disable-next-line no-console
return console.log('Malformed ID3 frame encountered. Skipping metadata parsing.');
}
frameHeader = String.fromCharCode(tag.data[frameStart],
tag.data[frameStart + 1],
tag.data[frameStart + 2],
tag.data[frameStart + 3]);
frame = {
id: frameHeader,
data: tag.data.subarray(frameStart + 10, frameStart + frameSize + 10)
};
frame.key = frame.id;
if (tagParsers[frame.id]) {
tagParsers[frame.id](frame);
// handle the special PRIV frame used to indicate the start
// time for raw AAC data
if (frame.owner === 'com.apple.streaming.transportStreamTimestamp') {
var
d = frame.data,
size = ((d[3] & 0x01) << 30) |
(d[4] << 22) |
(d[5] << 14) |
(d[6] << 6) |
(d[7] >>> 2);
size *= 4;
size += d[7] & 0x03;
frame.timeStamp = size;
// in raw AAC, all subsequent data will be timestamped based
// on the value of this frame
// we couldn't have known the appropriate pts and dts before
// parsing this ID3 tag so set those values now
if (tag.pts === undefined && tag.dts === undefined) {
tag.pts = frame.timeStamp;
tag.dts = frame.timeStamp;
}
this.trigger('timestamp', frame);
}
}
tag.frames.push(frame);
frameStart += 10; // advance past the frame header
frameStart += frameSize; // advance past the frame body
} while (frameStart < tagSize);
this.trigger('data', tag);
};
};
MetadataStream.prototype = new Stream();
module.exports = MetadataStream;
},{"../utils/stream":33,"./stream-types":22}],21:[function(require,module,exports){
/**
* mux.js
*
* Copyright (c) 2016 Brightcove
* All rights reserved.
*
* Utilities to detect basic properties and metadata about TS Segments.
*/
'use strict';
var StreamTypes = require('./stream-types.js');
var parsePid = function(packet) {
var pid = packet[1] & 0x1f;
pid <<= 8;
pid |= packet[2];
return pid;
};
var parsePayloadUnitStartIndicator = function(packet) {
return !!(packet[1] & 0x40);
};
var parseAdaptionField = function(packet) {
var offset = 0;
// if an adaption field is present, its length is specified by the
// fifth byte of the TS packet header. The adaptation field is
// used to add stuffing to PES packets that don't fill a complete
// TS packet, and to specify some forms of timing and control data
// that we do not currently use.
if (((packet[3] & 0x30) >>> 4) > 0x01) {
offset += packet[4] + 1;
}
return offset;
};
var parseType = function(packet, pmtPid) {
var pid = parsePid(packet);
if (pid === 0) {
return 'pat';
} else if (pid === pmtPid) {
return 'pmt';
} else if (pmtPid) {
return 'pes';
}
return null;
};
var parsePat = function(packet) {
var pusi = parsePayloadUnitStartIndicator(packet);
var offset = 4 + parseAdaptionField(packet);
if (pusi) {
offset += packet[offset] + 1;
}
return (packet[offset + 10] & 0x1f) << 8 | packet[offset + 11];
};
var parsePmt = function(packet) {
var programMapTable = {};
var pusi = parsePayloadUnitStartIndicator(packet);
var payloadOffset = 4 + parseAdaptionField(packet);
if (pusi) {
payloadOffset += packet[payloadOffset] + 1;
}
// PMTs can be sent ahead of the time when they should actually
// take effect. We don't believe this should ever be the case
// for HLS but we'll ignore "forward" PMT declarations if we see
// them. Future PMT declarations have the current_next_indicator
// set to zero.
if (!(packet[payloadOffset + 5] & 0x01)) {
return;
}
var sectionLength, tableEnd, programInfoLength;
// the mapping table ends at the end of the current section
sectionLength = (packet[payloadOffset + 1] & 0x0f) << 8 | packet[payloadOffset + 2];
tableEnd = 3 + sectionLength - 4;
// to determine where the table is, we have to figure out how
// long the program info descriptors are
programInfoLength = (packet[payloadOffset + 10] & 0x0f) << 8 | packet[payloadOffset + 11];
// advance the offset to the first entry in the mapping table
var offset = 12 + programInfoLength;
while (offset < tableEnd) {
var i = payloadOffset + offset;
// add an entry that maps the elementary_pid to the stream_type
programMapTable[(packet[i + 1] & 0x1F) << 8 | packet[i + 2]] = packet[i];
// move to the next table entry
// skip past the elementary stream descriptors, if present
offset += ((packet[i + 3] & 0x0F) << 8 | packet[i + 4]) + 5;
}
return programMapTable;
};
var parsePesType = function(packet, programMapTable) {
var pid = parsePid(packet);
var type = programMapTable[pid];
switch (type) {
case StreamTypes.H264_STREAM_TYPE:
return 'video';
case StreamTypes.ADTS_STREAM_TYPE:
return 'audio';
case StreamTypes.METADATA_STREAM_TYPE:
return 'timed-metadata';
default:
return null;
}
};
var parsePesTime = function(packet) {
var pusi = parsePayloadUnitStartIndicator(packet);
if (!pusi) {
return null;
}
var offset = 4 + parseAdaptionField(packet);
if (offset >= packet.byteLength) {
// From the H 222.0 MPEG-TS spec
// "For transport stream packets carrying PES packets, stuffing is needed when there
// is insufficient PES packet data to completely fill the transport stream packet
// payload bytes. Stuffing is accomplished by defining an adaptation field longer than
// the sum of the lengths of the data elements in it, so that the payload bytes
// remaining after the adaptation field exactly accommodates the available PES packet
// data."
//
// If the offset is >= the length of the packet, then the packet contains no data
// and instead is just adaption field stuffing bytes
return null;
}
var pes = null;
var ptsDtsFlags;
// PES packets may be annotated with a PTS value, or a PTS value
// and a DTS value. Determine what combination of values is
// available to work with.
ptsDtsFlags = packet[offset + 7];
// PTS and DTS are normally stored as a 33-bit number. Javascript
// performs all bitwise operations on 32-bit integers but javascript
// supports a much greater range (52-bits) of integer using standard
// mathematical operations.
// We construct a 31-bit value using bitwise operators over the 31
// most significant bits and then multiply by 4 (equal to a left-shift
// of 2) before we add the final 2 least significant bits of the
// timestamp (equal to an OR.)
if (ptsDtsFlags & 0xC0) {
pes = {};
// the PTS and DTS are not written out directly. For information
// on how they are encoded, see
// http://dvd.sourceforge.net/dvdinfo/pes-hdr.html
pes.pts = (packet[offset + 9] & 0x0E) << 27 |
(packet[offset + 10] & 0xFF) << 20 |
(packet[offset + 11] & 0xFE) << 12 |
(packet[offset + 12] & 0xFF) << 5 |
(packet[offset + 13] & 0xFE) >>> 3;
pes.pts *= 4; // Left shift by 2
pes.pts += (packet[offset + 13] & 0x06) >>> 1; // OR by the two LSBs
pes.dts = pes.pts;
if (ptsDtsFlags & 0x40) {
pes.dts = (packet[offset + 14] & 0x0E) << 27 |
(packet[offset + 15] & 0xFF) << 20 |
(packet[offset + 16] & 0xFE) << 12 |
(packet[offset + 17] & 0xFF) << 5 |
(packet[offset + 18] & 0xFE) >>> 3;
pes.dts *= 4; // Left shift by 2
pes.dts += (packet[offset + 18] & 0x06) >>> 1; // OR by the two LSBs
}
}
return pes;
};
var parseNalUnitType = function(type) {
switch (type) {
case 0x05:
return 'slice_layer_without_partitioning_rbsp_idr';
case 0x06:
return 'sei_rbsp';
case 0x07:
return 'seq_parameter_set_rbsp';
case 0x08:
return 'pic_parameter_set_rbsp';
case 0x09:
return 'access_unit_delimiter_rbsp';
default:
return null;
}
};
var videoPacketContainsKeyFrame = function(packet) {
var offset = 4 + parseAdaptionField(packet);
var frameBuffer = packet.subarray(offset);
var frameI = 0;
var frameSyncPoint = 0;
var foundKeyFrame = false;
var nalType;
// advance the sync point to a NAL start, if necessary
for (; frameSyncPoint < frameBuffer.byteLength - 3; frameSyncPoint++) {
if (frameBuffer[frameSyncPoint + 2] === 1) {
// the sync point is properly aligned
frameI = frameSyncPoint + 5;
break;
}
}
while (frameI < frameBuffer.byteLength) {
// look at the current byte to determine if we've hit the end of
// a NAL unit boundary
switch (frameBuffer[frameI]) {
case 0:
// skip past non-sync sequences
if (frameBuffer[frameI - 1] !== 0) {
frameI += 2;
break;
} else if (frameBuffer[frameI - 2] !== 0) {
frameI++;
break;
}
if (frameSyncPoint + 3 !== frameI - 2) {
nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);
if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {
foundKeyFrame = true;
}
}
// drop trailing zeroes
do {
frameI++;
} while (frameBuffer[frameI] !== 1 && frameI < frameBuffer.length);
frameSyncPoint = frameI - 2;
frameI += 3;
break;
case 1:
// skip past non-sync sequences
if (frameBuffer[frameI - 1] !== 0 ||
frameBuffer[frameI - 2] !== 0) {
frameI += 3;
break;
}
nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);
if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {
foundKeyFrame = true;
}
frameSyncPoint = frameI - 2;
frameI += 3;
break;
default:
// the current byte isn't a one or zero, so it cannot be part
// of a sync sequence
frameI += 3;
break;
}
}
frameBuffer = frameBuffer.subarray(frameSyncPoint);
frameI -= frameSyncPoint;
frameSyncPoint = 0;
// parse the final nal
if (frameBuffer && frameBuffer.byteLength > 3) {
nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);
if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {
foundKeyFrame = true;
}
}
return foundKeyFrame;
};
module.exports = {
parseType: parseType,
parsePat: parsePat,
parsePmt: parsePmt,
parsePayloadUnitStartIndicator: parsePayloadUnitStartIndicator,
parsePesType: parsePesType,
parsePesTime: parsePesTime,
videoPacketContainsKeyFrame: videoPacketContainsKeyFrame
};
},{"./stream-types.js":22}],22:[function(require,module,exports){
'use strict';
module.exports = {
H264_STREAM_TYPE: 0x1B,
ADTS_STREAM_TYPE: 0x0F,
METADATA_STREAM_TYPE: 0x15
};
},{}],23:[function(require,module,exports){
/**
* mux.js
*
* Copyright (c) 2016 Brightcove
* All rights reserved.
*
* Accepts program elementary stream (PES) data events and corrects
* decode and presentation time stamps to account for a rollover
* of the 33 bit value.
*/
'use strict';
var Stream = require('../utils/stream');
var MAX_TS = 8589934592;
var RO_THRESH = 4294967296;
var handleRollover = function(value, reference) {
var direction = 1;
if (value > reference) {
// If the current timestamp value is greater than our reference timestamp and we detect a
// timestamp rollover, this means the roll over is happening in the opposite direction.
// Example scenario: Enter a long stream/video just after a rollover occurred. The reference
// point will be set to a small number, e.g. 1. The user then seeks backwards over the
// rollover point. In loading this segment, the timestamp values will be very large,
// e.g. 2^33 - 1. Since this comes before the data we loaded previously, we want to adjust
// the time stamp to be `value - 2^33`.
direction = -1;
}
// Note: A seek forwards or back that is greater than the RO_THRESH (2^32, ~13 hours) will
// cause an incorrect adjustment.
while (Math.abs(reference - value) > RO_THRESH) {
value += (direction * MAX_TS);
}
return value;
};
var TimestampRolloverStream = function(type) {
var lastDTS, referenceDTS;
TimestampRolloverStream.prototype.init.call(this);
this.type_ = type;
this.push = function(data) {
if (data.type !== this.type_) {
return;
}
if (referenceDTS === undefined) {
referenceDTS = data.dts;
}
data.dts = handleRollover(data.dts, referenceDTS);
data.pts = handleRollover(data.pts, referenceDTS);
lastDTS = data.dts;
this.trigger('data', data);
};
this.flush = function() {
referenceDTS = lastDTS;
this.trigger('done');
};
this.discontinuity = function() {
referenceDTS = void 0;
lastDTS = void 0;
};
};
TimestampRolloverStream.prototype = new Stream();
module.exports = {
TimestampRolloverStream: TimestampRolloverStream,
handleRollover: handleRollover
};
},{"../utils/stream":33}],24:[function(require,module,exports){
module.exports = {
generator: require('./mp4-generator'),
Transmuxer: require('./transmuxer').Transmuxer,
AudioSegmentStream: require('./transmuxer').AudioSegmentStream,
VideoSegmentStream: require('./transmuxer').VideoSegmentStream
};
},{"./mp4-generator":25,"./transmuxer":27}],25:[function(require,module,exports){
/**
* mux.js
*
* Copyright (c) 2015 Brightcove
* All rights reserved.
*
* Functions that generate fragmented MP4s suitable for use with Media
* Source Extensions.
*/
'use strict';
var UINT32_MAX = Math.pow(2, 32) - 1;
var box, dinf, esds, ftyp, mdat, mfhd, minf, moof, moov, mvex, mvhd,
trak, tkhd, mdia, mdhd, hdlr, sdtp, stbl, stsd, traf, trex,
trun, types, MAJOR_BRAND, MINOR_VERSION, AVC1_BRAND, VIDEO_HDLR,
AUDIO_HDLR, HDLR_TYPES, VMHD, SMHD, DREF, STCO, STSC, STSZ, STTS;
// pre-calculate constants
(function() {
var i;
types = {
avc1: [], // codingname
avcC: [],
btrt: [],
dinf: [],
dref: [],
esds: [],
ftyp: [],
hdlr: [],
mdat: [],
mdhd: [],
mdia: [],
mfhd: [],
minf: [],
moof: [],
moov: [],
mp4a: [], // codingname
mvex: [],
mvhd: [],
sdtp: [],
smhd: [],
stbl: [],
stco: [],
stsc: [],
stsd: [],
stsz: [],
stts: [],
styp: [],
tfdt: [],
tfhd: [],
traf: [],
trak: [],
trun: [],
trex: [],
tkhd: [],
vmhd: []
};
// In environments where Uint8Array is undefined (e.g., IE8), skip set up so that we
// don't throw an error
if (typeof Uint8Array === 'undefined') {
return;
}
for (i in types) {
if (types.hasOwnProperty(i)) {
types[i] = [
i.charCodeAt(0),
i.charCodeAt(1),
i.charCodeAt(2),
i.charCodeAt(3)
];
}
}
MAJOR_BRAND = new Uint8Array([
'i'.charCodeAt(0),
's'.charCodeAt(0),
'o'.charCodeAt(0),
'm'.charCodeAt(0)
]);
AVC1_BRAND = new Uint8Array([
'a'.charCodeAt(0),
'v'.charCodeAt(0),
'c'.charCodeAt(0),
'1'.charCodeAt(0)
]);
MINOR_VERSION = new Uint8Array([0, 0, 0, 1]);
VIDEO_HDLR = new Uint8Array([
0x00, // version 0
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x00, // pre_defined
0x76, 0x69, 0x64, 0x65, // handler_type: 'vide'
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
0x56, 0x69, 0x64, 0x65,
0x6f, 0x48, 0x61, 0x6e,
0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'VideoHandler'
]);
AUDIO_HDLR = new Uint8Array([
0x00, // version 0
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x00, // pre_defined
0x73, 0x6f, 0x75, 0x6e, // handler_type: 'soun'
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
0x53, 0x6f, 0x75, 0x6e,
0x64, 0x48, 0x61, 0x6e,
0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'SoundHandler'
]);
HDLR_TYPES = {
video: VIDEO_HDLR,
audio: AUDIO_HDLR
};
DREF = new Uint8Array([
0x00, // version 0
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x01, // entry_count
0x00, 0x00, 0x00, 0x0c, // entry_size
0x75, 0x72, 0x6c, 0x20, // 'url' type
0x00, // version 0
0x00, 0x00, 0x01 // entry_flags
]);
SMHD = new Uint8Array([
0x00, // version
0x00, 0x00, 0x00, // flags
0x00, 0x00, // balance, 0 means centered
0x00, 0x00 // reserved
]);
STCO = new Uint8Array([
0x00, // version
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x00 // entry_count
]);
STSC = STCO;
STSZ = new Uint8Array([
0x00, // version
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x00, // sample_size
0x00, 0x00, 0x00, 0x00 // sample_count
]);
STTS = STCO;
VMHD = new Uint8Array([
0x00, // version
0x00, 0x00, 0x01, // flags
0x00, 0x00, // graphicsmode
0x00, 0x00,
0x00, 0x00,
0x00, 0x00 // opcolor
]);
}());
box = function(type) {
var
payload = [],
size = 0,
i,
result,
view;
for (i = 1; i < arguments.length; i++) {
payload.push(arguments[i]);
}
i = payload.length;
// calculate the total size we need to allocate
while (i--) {
size += payload[i].byteLength;
}
result = new Uint8Array(size + 8);
view = new DataView(result.buffer, result.byteOffset, result.byteLength);
view.setUint32(0, result.byteLength);
result.set(type, 4);
// copy the payload into the result
for (i = 0, size = 8; i < payload.length; i++) {
result.set(payload[i], size);
size += payload[i].byteLength;
}
return result;
};
dinf = function() {
return box(types.dinf, box(types.dref, DREF));
};
esds = function(track) {
return box(types.esds, new Uint8Array([
0x00, // version
0x00, 0x00, 0x00, // flags
// ES_Descriptor
0x03, // tag, ES_DescrTag
0x19, // length
0x00, 0x00, // ES_ID
0x00, // streamDependenceFlag, URL_flag, reserved, streamPriority
// DecoderConfigDescriptor
0x04, // tag, DecoderConfigDescrTag
0x11, // length
0x40, // object type
0x15, // streamType
0x00, 0x06, 0x00, // bufferSizeDB
0x00, 0x00, 0xda, 0xc0, // maxBitrate
0x00, 0x00, 0xda, 0xc0, // avgBitrate
// DecoderSpecificInfo
0x05, // tag, DecoderSpecificInfoTag
0x02, // length
// ISO/IEC 14496-3, AudioSpecificConfig
// for samplingFrequencyIndex see ISO/IEC 13818-7:2006, 8.1.3.2.2, Table 35
(track.audioobjecttype << 3) | (track.samplingfrequencyindex >>> 1),
(track.samplingfrequencyindex << 7) | (track.channelcount << 3),
0x06, 0x01, 0x02 // GASpecificConfig
]));
};
ftyp = function() {
return box(types.ftyp, MAJOR_BRAND, MINOR_VERSION, MAJOR_BRAND, AVC1_BRAND);
};
hdlr = function(type) {
return box(types.hdlr, HDLR_TYPES[type]);
};
mdat = function(data) {
return box(types.mdat, data);
};
mdhd = function(track) {
var result = new Uint8Array([
0x00, // version 0
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x02, // creation_time
0x00, 0x00, 0x00, 0x03, // modification_time
0x00, 0x01, 0x5f, 0x90, // timescale, 90,000 "ticks" per second
(track.duration >>> 24) & 0xFF,
(track.duration >>> 16) & 0xFF,
(track.duration >>> 8) & 0xFF,
track.duration & 0xFF, // duration
0x55, 0xc4, // 'und' language (undetermined)
0x00, 0x00
]);
// Use the sample rate from the track metadata, when it is
// defined. The sample rate can be parsed out of an ADTS header, for
// instance.
if (track.samplerate) {
result[12] = (track.samplerate >>> 24) & 0xFF;
result[13] = (track.samplerate >>> 16) & 0xFF;
result[14] = (track.samplerate >>> 8) & 0xFF;
result[15] = (track.samplerate) & 0xFF;
}
return box(types.mdhd, result);
};
mdia = function(track) {
return box(types.mdia, mdhd(track), hdlr(track.type), minf(track));
};
mfhd = function(sequenceNumber) {
return box(types.mfhd, new Uint8Array([
0x00,
0x00, 0x00, 0x00, // flags
(sequenceNumber & 0xFF000000) >> 24,
(sequenceNumber & 0xFF0000) >> 16,
(sequenceNumber & 0xFF00) >> 8,
sequenceNumber & 0xFF // sequence_number
]));
};
minf = function(track) {
return box(types.minf,
track.type === 'video' ? box(types.vmhd, VMHD) : box(types.smhd, SMHD),
dinf(),
stbl(track));
};
moof = function(sequenceNumber, tracks) {
var
trackFragments = [],
i = tracks.length;
// build traf boxes for each track fragment
while (i--) {
trackFragments[i] = traf(tracks[i]);
}
return box.apply(null, [
types.moof,
mfhd(sequenceNumber)
].concat(trackFragments));
};
/**
* Returns a movie box.
* @param tracks {array} the tracks associated with this movie
* @see ISO/IEC 14496-12:2012(E), section 8.2.1
*/
moov = function(tracks) {
var
i = tracks.length,
boxes = [];
while (i--) {
boxes[i] = trak(tracks[i]);
}
return box.apply(null, [types.moov, mvhd(0xffffffff)].concat(boxes).concat(mvex(tracks)));
};
mvex = function(tracks) {
var
i = tracks.length,
boxes = [];
while (i--) {
boxes[i] = trex(tracks[i]);
}
return box.apply(null, [types.mvex].concat(boxes));
};
mvhd = function(duration) {
var
bytes = new Uint8Array([
0x00, // version 0
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x01, // creation_time
0x00, 0x00, 0x00, 0x02, // modification_time
0x00, 0x01, 0x5f, 0x90, // timescale, 90,000 "ticks" per second
(duration & 0xFF000000) >> 24,
(duration & 0xFF0000) >> 16,
(duration & 0xFF00) >> 8,
duration & 0xFF, // duration
0x00, 0x01, 0x00, 0x00, // 1.0 rate
0x01, 0x00, // 1.0 volume
0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x40, 0x00, 0x00, 0x00, // transformation: unity matrix
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, // pre_defined
0xff, 0xff, 0xff, 0xff // next_track_ID
]);
return box(types.mvhd, bytes);
};
sdtp = function(track) {
var
samples = track.samples || [],
bytes = new Uint8Array(4 + samples.length),
flags,
i;
// leave the full box header (4 bytes) all zero
// write the sample table
for (i = 0; i < samples.length; i++) {
flags = samples[i].flags;
bytes[i + 4] = (flags.dependsOn << 4) |
(flags.isDependedOn << 2) |
(flags.hasRedundancy);
}
return box(types.sdtp,
bytes);
};
stbl = function(track) {
return box(types.stbl,
stsd(track),
box(types.stts, STTS),
box(types.stsc, STSC),
box(types.stsz, STSZ),
box(types.stco, STCO));
};
(function() {
var videoSample, audioSample;
stsd = function(track) {
return box(types.stsd, new Uint8Array([
0x00, // version 0
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x01
]), track.type === 'video' ? videoSample(track) : audioSample(track));
};
videoSample = function(track) {
var
sps = track.sps || [],
pps = track.pps || [],
sequenceParameterSets = [],
pictureParameterSets = [],
i;
// assemble the SPSs
for (i = 0; i < sps.length; i++) {
sequenceParameterSets.push((sps[i].byteLength & 0xFF00) >>> 8);
sequenceParameterSets.push((sps[i].byteLength & 0xFF)); // sequenceParameterSetLength
sequenceParameterSets = sequenceParameterSets.concat(Array.prototype.slice.call(sps[i])); // SPS
}
// assemble the PPSs
for (i = 0; i < pps.length; i++) {
pictureParameterSets.push((pps[i].byteLength & 0xFF00) >>> 8);
pictureParameterSets.push((pps[i].byteLength & 0xFF));
pictureParameterSets = pictureParameterSets.concat(Array.prototype.slice.call(pps[i]));
}
return box(types.avc1, new Uint8Array([
0x00, 0x00, 0x00,
0x00, 0x00, 0x00, // reserved
0x00, 0x01, // data_reference_index
0x00, 0x00, // pre_defined
0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, // pre_defined
(track.width & 0xff00) >> 8,
track.width & 0xff, // width
(track.height & 0xff00) >> 8,
track.height & 0xff, // height
0x00, 0x48, 0x00, 0x00, // horizresolution
0x00, 0x48, 0x00, 0x00, // vertresolution
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x01, // frame_count
0x13,
0x76, 0x69, 0x64, 0x65,
0x6f, 0x6a, 0x73, 0x2d,
0x63, 0x6f, 0x6e, 0x74,
0x72, 0x69, 0x62, 0x2d,
0x68, 0x6c, 0x73, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, // compressorname
0x00, 0x18, // depth = 24
0x11, 0x11 // pre_defined = -1
]), box(types.avcC, new Uint8Array([
0x01, // configurationVersion
track.profileIdc, // AVCProfileIndication
track.profileCompatibility, // profile_compatibility
track.levelIdc, // AVCLevelIndication
0xff // lengthSizeMinusOne, hard-coded to 4 bytes
].concat([
sps.length // numOfSequenceParameterSets
]).concat(sequenceParameterSets).concat([
pps.length // numOfPictureParameterSets
]).concat(pictureParameterSets))), // "PPS"
box(types.btrt, new Uint8Array([
0x00, 0x1c, 0x9c, 0x80, // bufferSizeDB
0x00, 0x2d, 0xc6, 0xc0, // maxBitrate
0x00, 0x2d, 0xc6, 0xc0
])) // avgBitrate
);
};
audioSample = function(track) {
return box(types.mp4a, new Uint8Array([
// SampleEntry, ISO/IEC 14496-12
0x00, 0x00, 0x00,
0x00, 0x00, 0x00, // reserved
0x00, 0x01, // data_reference_index
// AudioSampleEntry, ISO/IEC 14496-12
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
(track.channelcount & 0xff00) >> 8,
(track.channelcount & 0xff), // channelcount
(track.samplesize & 0xff00) >> 8,
(track.samplesize & 0xff), // samplesize
0x00, 0x00, // pre_defined
0x00, 0x00, // reserved
(track.samplerate & 0xff00) >> 8,
(track.samplerate & 0xff),
0x00, 0x00 // samplerate, 16.16
// MP4AudioSampleEntry, ISO/IEC 14496-14
]), esds(track));
};
}());
tkhd = function(track) {
var result = new Uint8Array([
0x00, // version 0
0x00, 0x00, 0x07, // flags
0x00, 0x00, 0x00, 0x00, // creation_time
0x00, 0x00, 0x00, 0x00, // modification_time
(track.id & 0xFF000000) >> 24,
(track.id & 0xFF0000) >> 16,
(track.id & 0xFF00) >> 8,
track.id & 0xFF, // track_ID
0x00, 0x00, 0x00, 0x00, // reserved
(track.duration & 0xFF000000) >> 24,
(track.duration & 0xFF0000) >> 16,
(track.duration & 0xFF00) >> 8,
track.duration & 0xFF, // duration
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, // layer
0x00, 0x00, // alternate_group
0x01, 0x00, // non-audio track volume
0x00, 0x00, // reserved
0x00, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x40, 0x00, 0x00, 0x00, // transformation: unity matrix
(track.width & 0xFF00) >> 8,
track.width & 0xFF,
0x00, 0x00, // width
(track.height & 0xFF00) >> 8,
track.height & 0xFF,
0x00, 0x00 // height
]);
return box(types.tkhd, result);
};
/**
* Generate a track fragment (traf) box. A traf box collects metadata
* about tracks in a movie fragment (moof) box.
*/
traf = function(track) {
var trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun,
sampleDependencyTable, dataOffset,
upperWordBaseMediaDecodeTime, lowerWordBaseMediaDecodeTime;
trackFragmentHeader = box(types.tfhd, new Uint8Array([
0x00, // version 0
0x00, 0x00, 0x3a, // flags
(track.id & 0xFF000000) >> 24,
(track.id & 0xFF0000) >> 16,
(track.id & 0xFF00) >> 8,
(track.id & 0xFF), // track_ID
0x00, 0x00, 0x00, 0x01, // sample_description_index
0x00, 0x00, 0x00, 0x00, // default_sample_duration
0x00, 0x00, 0x00, 0x00, // default_sample_size
0x00, 0x00, 0x00, 0x00 // default_sample_flags
]));
upperWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime / (UINT32_MAX + 1));
lowerWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime % (UINT32_MAX + 1));
trackFragmentDecodeTime = box(types.tfdt, new Uint8Array([
0x01, // version 1
0x00, 0x00, 0x00, // flags
// baseMediaDecodeTime
(upperWordBaseMediaDecodeTime >>> 24) & 0xFF,
(upperWordBaseMediaDecodeTime >>> 16) & 0xFF,
(upperWordBaseMediaDecodeTime >>> 8) & 0xFF,
upperWordBaseMediaDecodeTime & 0xFF,
(lowerWordBaseMediaDecodeTime >>> 24) & 0xFF,
(lowerWordBaseMediaDecodeTime >>> 16) & 0xFF,
(lowerWordBaseMediaDecodeTime >>> 8) & 0xFF,
lowerWordBaseMediaDecodeTime & 0xFF
]));
// the data offset specifies the number of bytes from the start of
// the containing moof to the first payload byte of the associated
// mdat
dataOffset = (32 + // tfhd
20 + // tfdt
8 + // traf header
16 + // mfhd
8 + // moof header
8); // mdat header
// audio tracks require less metadata
if (track.type === 'audio') {
trackFragmentRun = trun(track, dataOffset);
return box(types.traf,
trackFragmentHeader,
trackFragmentDecodeTime,
trackFragmentRun);
}
// video tracks should contain an independent and disposable samples
// box (sdtp)
// generate one and adjust offsets to match
sampleDependencyTable = sdtp(track);
trackFragmentRun = trun(track,
sampleDependencyTable.length + dataOffset);
return box(types.traf,
trackFragmentHeader,
trackFragmentDecodeTime,
trackFragmentRun,
sampleDependencyTable);
};
/**
* Generate a track box.
* @param track {object} a track definition
* @return {Uint8Array} the track box
*/
trak = function(track) {
track.duration = track.duration || 0xffffffff;
return box(types.trak,
tkhd(track),
mdia(track));
};
trex = function(track) {
var result = new Uint8Array([
0x00, // version 0
0x00, 0x00, 0x00, // flags
(track.id & 0xFF000000) >> 24,
(track.id & 0xFF0000) >> 16,
(track.id & 0xFF00) >> 8,
(track.id & 0xFF), // track_ID
0x00, 0x00, 0x00, 0x01, // default_sample_description_index
0x00, 0x00, 0x00, 0x00, // default_sample_duration
0x00, 0x00, 0x00, 0x00, // default_sample_size
0x00, 0x01, 0x00, 0x01 // default_sample_flags
]);
// the last two bytes of default_sample_flags is the sample
// degradation priority, a hint about the importance of this sample
// relative to others. Lower the degradation priority for all sample
// types other than video.
if (track.type !== 'video') {
result[result.length - 1] = 0x00;
}
return box(types.trex, result);
};
(function() {
var audioTrun, videoTrun, trunHeader;
// This method assumes all samples are uniform. That is, if a
// duration is present for the first sample, it will be present for
// all subsequent samples.
// see ISO/IEC 14496-12:2012, Section 8.8.8.1
trunHeader = function(samples, offset) {
var durationPresent = 0, sizePresent = 0,
flagsPresent = 0, compositionTimeOffset = 0;
// trun flag constants
if (samples.length) {
if (samples[0].duration !== undefined) {
durationPresent = 0x1;
}
if (samples[0].size !== undefined) {
sizePresent = 0x2;
}
if (samples[0].flags !== undefined) {
flagsPresent = 0x4;
}
if (samples[0].compositionTimeOffset !== undefined) {
compositionTimeOffset = 0x8;
}
}
return [
0x00, // version 0
0x00,
durationPresent | sizePresent | flagsPresent | compositionTimeOffset,
0x01, // flags
(samples.length & 0xFF000000) >>> 24,
(samples.length & 0xFF0000) >>> 16,
(samples.length & 0xFF00) >>> 8,
samples.length & 0xFF, // sample_count
(offset & 0xFF000000) >>> 24,
(offset & 0xFF0000) >>> 16,
(offset & 0xFF00) >>> 8,
offset & 0xFF // data_offset
];
};
videoTrun = function(track, offset) {
var bytes, samples, sample, i;
samples = track.samples || [];
offset += 8 + 12 + (16 * samples.length);
bytes = trunHeader(samples, offset);
for (i = 0; i < samples.length; i++) {
sample = samples[i];
bytes = bytes.concat([
(sample.duration & 0xFF000000) >>> 24,
(sample.duration & 0xFF0000) >>> 16,
(sample.duration & 0xFF00) >>> 8,
sample.duration & 0xFF, // sample_duration
(sample.size & 0xFF000000) >>> 24,
(sample.size & 0xFF0000) >>> 16,
(sample.size & 0xFF00) >>> 8,
sample.size & 0xFF, // sample_size
(sample.flags.isLeading << 2) | sample.flags.dependsOn,
(sample.flags.isDependedOn << 6) |
(sample.flags.hasRedundancy << 4) |
(sample.flags.paddingValue << 1) |
sample.flags.isNonSyncSample,
sample.flags.degradationPriority & 0xF0 << 8,
sample.flags.degradationPriority & 0x0F, // sample_flags
(sample.compositionTimeOffset & 0xFF000000) >>> 24,
(sample.compositionTimeOffset & 0xFF0000) >>> 16,
(sample.compositionTimeOffset & 0xFF00) >>> 8,
sample.compositionTimeOffset & 0xFF // sample_composition_time_offset
]);
}
return box(types.trun, new Uint8Array(bytes));
};
audioTrun = function(track, offset) {
var bytes, samples, sample, i;
samples = track.samples || [];
offset += 8 + 12 + (8 * samples.length);
bytes = trunHeader(samples, offset);
for (i = 0; i < samples.length; i++) {
sample = samples[i];
bytes = bytes.concat([
(sample.duration & 0xFF000000) >>> 24,
(sample.duration & 0xFF0000) >>> 16,
(sample.duration & 0xFF00) >>> 8,
sample.duration & 0xFF, // sample_duration
(sample.size & 0xFF000000) >>> 24,
(sample.size & 0xFF0000) >>> 16,
(sample.size & 0xFF00) >>> 8,
sample.size & 0xFF]); // sample_size
}
return box(types.trun, new Uint8Array(bytes));
};
trun = function(track, offset) {
if (track.type === 'audio') {
return audioTrun(track, offset);
}
return videoTrun(track, offset);
};
}());
module.exports = {
ftyp: ftyp,
mdat: mdat,
moof: moof,
moov: moov,
initSegment: function(tracks) {
var
fileType = ftyp(),
movie = moov(tracks),
result;
result = new Uint8Array(fileType.byteLength + movie.byteLength);
result.set(fileType);
result.set(movie, fileType.byteLength);
return result;
}
};
},{}],26:[function(require,module,exports){
/**
* mux.js
*
* Copyright (c) 2015 Brightcove
* All rights reserved.
*
* Utilities to detect basic properties and metadata about MP4s.
*/
'use strict';
var findBox, parseType, timescale, startTime;
// Find the data for a box specified by its path
findBox = function(data, path) {
var results = [],
i, size, type, end, subresults;
if (!path.length) {
// short-circuit the search for empty paths
return null;
}
for (i = 0; i < data.byteLength;) {
size = data[i] << 24;
size |= data[i + 1] << 16;
size |= data[i + 2] << 8;
size |= data[i + 3];
type = parseType(data.subarray(i + 4, i + 8));
end = size > 1 ? i + size : data.byteLength;
if (type === path[0]) {
if (path.length === 1) {
// this is the end of the path and we've found the box we were
// looking for
results.push(data.subarray(i + 8, end));
} else {
// recursively search for the next box along the path
subresults = findBox(data.subarray(i + 8, end), path.slice(1));
if (subresults.length) {
results = results.concat(subresults);
}
}
}
i = end;
}
// we've finished searching all of data
return results;
};
/**
* Returns the string representation of an ASCII encoded four byte buffer.
* @param buffer {Uint8Array} a four-byte buffer to translate
* @return {string} the corresponding string
*/
parseType = function(buffer) {
var result = '';
result += String.fromCharCode(buffer[0]);
result += String.fromCharCode(buffer[1]);
result += String.fromCharCode(buffer[2]);
result += String.fromCharCode(buffer[3]);
return result;
};
/**
* Parses an MP4 initialization segment and extracts the timescale
* values for any declared tracks. Timescale values indicate the
* number of clock ticks per second to assume for time-based values
* elsewhere in the MP4.
*
* To determine the start time of an MP4, you need two pieces of
* information: the timescale unit and the earliest base media decode
* time. Multiple timescales can be specified within an MP4 but the
* base media decode time is always expressed in the timescale from
* the media header box for the track:
* ```
* moov > trak > mdia > mdhd.timescale
* ```
* @param init {Uint8Array} the bytes of the init segment
* @return {object} a hash of track ids to timescale values or null if
* the init segment is malformed.
*/
timescale = function(init) {
var
result = {},
traks = findBox(init, ['moov', 'trak']);
// mdhd timescale
return traks.reduce(function(result, trak) {
var tkhd, version, index, id, mdhd;
tkhd = findBox(trak, ['tkhd'])[0];
if (!tkhd) {
return null;
}
version = tkhd[0];
index = version === 0 ? 12 : 20;
id = tkhd[index] << 24 |
tkhd[index + 1] << 16 |
tkhd[index + 2] << 8 |
tkhd[index + 3];
mdhd = findBox(trak, ['mdia', 'mdhd'])[0];
if (!mdhd) {
return null;
}
version = mdhd[0];
index = version === 0 ? 12 : 20;
result[id] = mdhd[index] << 24 |
mdhd[index + 1] << 16 |
mdhd[index + 2] << 8 |
mdhd[index + 3];
return result;
}, result);
};
/**
* Determine the base media decode start time, in seconds, for an MP4
* fragment. If multiple fragments are specified, the earliest time is
* returned.
*
* The base media decode time can be parsed from track fragment
* metadata:
* ```
* moof > traf > tfdt.baseMediaDecodeTime
* ```
* It requires the timescale value from the mdhd to interpret.
*
* @param timescale {object} a hash of track ids to timescale values.
* @return {number} the earliest base media decode start time for the
* fragment, in seconds
*/
startTime = function(timescale, fragment) {
var trafs, baseTimes, result;
// we need info from two childrend of each track fragment box
trafs = findBox(fragment, ['moof', 'traf']);
// determine the start times for each track
baseTimes = [].concat.apply([], trafs.map(function(traf) {
return findBox(traf, ['tfhd']).map(function(tfhd) {
var id, scale, baseTime;
// get the track id from the tfhd
id = tfhd[4] << 24 |
tfhd[5] << 16 |
tfhd[6] << 8 |
tfhd[7];
// assume a 90kHz clock if no timescale was specified
scale = timescale[id] || 90e3;
// get the base media decode time from the tfdt
baseTime = findBox(traf, ['tfdt']).map(function(tfdt) {
var version, result;
version = tfdt[0];
result = tfdt[4] << 24 |
tfdt[5] << 16 |
tfdt[6] << 8 |
tfdt[7];
if (version === 1) {
result *= Math.pow(2, 32);
result += tfdt[8] << 24 |
tfdt[9] << 16 |
tfdt[10] << 8 |
tfdt[11];
}
return result;
})[0];
baseTime = baseTime || Infinity;
// convert base time to seconds
return baseTime / scale;
});
}));
// return the minimum
result = Math.min.apply(null, baseTimes);
return isFinite(result) ? result : 0;
};
module.exports = {
parseType: parseType,
timescale: timescale,
startTime: startTime
};
},{}],27:[function(require,module,exports){
/**
* mux.js
*
* Copyright (c) 2015 Brightcove
* All rights reserved.
*
* A stream-based mp2t to mp4 converter. This utility can be used to
* deliver mp4s to a SourceBuffer on platforms that support native
* Media Source Extensions.
*/
'use strict';
var Stream = require('../utils/stream.js');
var mp4 = require('./mp4-generator.js');
var m2ts = require('../m2ts/m2ts.js');
var AdtsStream = require('../codecs/adts.js');
var H264Stream = require('../codecs/h264').H264Stream;
var AacStream = require('../aac');
var coneOfSilence = require('../data/silence');
var clock = require('../utils/clock');
// constants
var AUDIO_PROPERTIES = [
'audioobjecttype',
'channelcount',
'samplerate',
'samplingfrequencyindex',
'samplesize'
];
var VIDEO_PROPERTIES = [
'width',
'height',
'profileIdc',
'levelIdc',
'profileCompatibility'
];
var ONE_SECOND_IN_TS = 90000; // 90kHz clock
// object types
var VideoSegmentStream, AudioSegmentStream, Transmuxer, CoalesceStream;
// Helper functions
var
createDefaultSample,
isLikelyAacData,
collectDtsInfo,
clearDtsInfo,
calculateTrackBaseMediaDecodeTime,
arrayEquals,
sumFrameByteLengths;
/**
* Default sample object
* see ISO/IEC 14496-12:2012, section 8.6.4.3
*/
createDefaultSample = function() {
return {
size: 0,
flags: {
isLeading: 0,
dependsOn: 1,
isDependedOn: 0,
hasRedundancy: 0,
degradationPriority: 0
}
};
};
isLikelyAacData = function(data) {
if ((data[0] === 'I'.charCodeAt(0)) &&
(data[1] === 'D'.charCodeAt(0)) &&
(data[2] === '3'.charCodeAt(0))) {
return true;
}
return false;
};
/**
* Compare two arrays (even typed) for same-ness
*/
arrayEquals = function(a, b) {
var
i;
if (a.length !== b.length) {
return false;
}
// compare the value of each element in the array
for (i = 0; i < a.length; i++) {
if (a[i] !== b[i]) {
return false;
}
}
return true;
};
/**
* Sum the `byteLength` properties of the data in each AAC frame
*/
sumFrameByteLengths = function(array) {
var
i,
currentObj,
sum = 0;
// sum the byteLength's all each nal unit in the frame
for (i = 0; i < array.length; i++) {
currentObj = array[i];
sum += currentObj.data.byteLength;
}
return sum;
};
/**
* Constructs a single-track, ISO BMFF media segment from AAC data
* events. The output of this stream can be fed to a SourceBuffer
* configured with a suitable initialization segment.
*/
AudioSegmentStream = function(track) {
var
adtsFrames = [],
sequenceNumber = 0,
earliestAllowedDts = 0,
audioAppendStartTs = 0,
videoBaseMediaDecodeTime = Infinity;
AudioSegmentStream.prototype.init.call(this);
this.push = function(data) {
collectDtsInfo(track, data);
if (track) {
AUDIO_PROPERTIES.forEach(function(prop) {
track[prop] = data[prop];
});
}
// buffer audio data until end() is called
adtsFrames.push(data);
};
this.setEarliestDts = function(earliestDts) {
earliestAllowedDts = earliestDts - track.timelineStartInfo.baseMediaDecodeTime;
};
this.setVideoBaseMediaDecodeTime = function(baseMediaDecodeTime) {
videoBaseMediaDecodeTime = baseMediaDecodeTime;
};
this.setAudioAppendStart = function(timestamp) {
audioAppendStartTs = timestamp;
};
this.flush = function() {
var
frames,
moof,
mdat,
boxes;
// return early if no audio data has been observed
if (adtsFrames.length === 0) {
this.trigger('done', 'AudioSegmentStream');
return;
}
frames = this.trimAdtsFramesByEarliestDts_(adtsFrames);
track.baseMediaDecodeTime = calculateTrackBaseMediaDecodeTime(track);
this.prefixWithSilence_(track, frames);
// we have to build the index from byte locations to
// samples (that is, adts frames) in the audio data
track.samples = this.generateSampleTable_(frames);
// concatenate the audio data to constuct the mdat
mdat = mp4.mdat(this.concatenateFrameData_(frames));
adtsFrames = [];
moof = mp4.moof(sequenceNumber, [track]);
boxes = new Uint8Array(moof.byteLength + mdat.byteLength);
// bump the sequence number for next time
sequenceNumber++;
boxes.set(moof);
boxes.set(mdat, moof.byteLength);
clearDtsInfo(track);
this.trigger('data', {track: track, boxes: boxes});
this.trigger('done', 'AudioSegmentStream');
};
// Possibly pad (prefix) the audio track with silence if appending this track
// would lead to the introduction of a gap in the audio buffer
this.prefixWithSilence_ = function(track, frames) {
var
baseMediaDecodeTimeTs,
frameDuration = 0,
audioGapDuration = 0,
audioFillFrameCount = 0,
audioFillDuration = 0,
silentFrame,
i;
if (!frames.length) {
return;
}
baseMediaDecodeTimeTs = clock.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate);
// determine frame clock duration based on sample rate, round up to avoid overfills
frameDuration = Math.ceil(ONE_SECOND_IN_TS / (track.samplerate / 1024));
if (audioAppendStartTs && videoBaseMediaDecodeTime) {
// insert the shortest possible amount (audio gap or audio to video gap)
audioGapDuration =
baseMediaDecodeTimeTs - Math.max(audioAppendStartTs, videoBaseMediaDecodeTime);
// number of full frames in the audio gap
audioFillFrameCount = Math.floor(audioGapDuration / frameDuration);
audioFillDuration = audioFillFrameCount * frameDuration;
}
// don't attempt to fill gaps smaller than a single frame or larger
// than a half second
if (audioFillFrameCount < 1 || audioFillDuration > ONE_SECOND_IN_TS / 2) {
return;
}
silentFrame = coneOfSilence[track.samplerate];
if (!silentFrame) {
// we don't have a silent frame pregenerated for the sample rate, so use a frame
// from the content instead
silentFrame = frames[0].data;
}
for (i = 0; i < audioFillFrameCount; i++) {
frames.splice(i, 0, {
data: silentFrame
});
}
track.baseMediaDecodeTime -=
Math.floor(clock.videoTsToAudioTs(audioFillDuration, track.samplerate));
};
// If the audio segment extends before the earliest allowed dts
// value, remove AAC frames until starts at or after the earliest
// allowed DTS so that we don't end up with a negative baseMedia-
// DecodeTime for the audio track
this.trimAdtsFramesByEarliestDts_ = function(adtsFrames) {
if (track.minSegmentDts >= earliestAllowedDts) {
return adtsFrames;
}
// We will need to recalculate the earliest segment Dts
track.minSegmentDts = Infinity;
return adtsFrames.filter(function(currentFrame) {
// If this is an allowed frame, keep it and record it's Dts
if (currentFrame.dts >= earliestAllowedDts) {
track.minSegmentDts = Math.min(track.minSegmentDts, currentFrame.dts);
track.minSegmentPts = track.minSegmentDts;
return true;
}
// Otherwise, discard it
return false;
});
};
// generate the track's raw mdat data from an array of frames
this.generateSampleTable_ = function(frames) {
var
i,
currentFrame,
samples = [];
for (i = 0; i < frames.length; i++) {
currentFrame = frames[i];
samples.push({
size: currentFrame.data.byteLength,
duration: 1024 // For AAC audio, all samples contain 1024 samples
});
}
return samples;
};
// generate the track's sample table from an array of frames
this.concatenateFrameData_ = function(frames) {
var
i,
currentFrame,
dataOffset = 0,
data = new Uint8Array(sumFrameByteLengths(frames));
for (i = 0; i < frames.length; i++) {
currentFrame = frames[i];
data.set(currentFrame.data, dataOffset);
dataOffset += currentFrame.data.byteLength;
}
return data;
};
};
AudioSegmentStream.prototype = new Stream();
/**
* Constructs a single-track, ISO BMFF media segment from H264 data
* events. The output of this stream can be fed to a SourceBuffer
* configured with a suitable initialization segment.
* @param track {object} track metadata configuration
* @param options {object} transmuxer options object
* @param options.alignGopsAtEnd {boolean} If true, start from the end of the
* gopsToAlignWith list when attempting to align gop pts
*/
VideoSegmentStream = function(track, options) {
var
sequenceNumber = 0,
nalUnits = [],
gopsToAlignWith = [],
config,
pps;
options = options || {};
VideoSegmentStream.prototype.init.call(this);
delete track.minPTS;
this.gopCache_ = [];
this.push = function(nalUnit) {
collectDtsInfo(track, nalUnit);
// record the track config
if (nalUnit.nalUnitType === 'seq_parameter_set_rbsp' && !config) {
config = nalUnit.config;
track.sps = [nalUnit.data];
VIDEO_PROPERTIES.forEach(function(prop) {
track[prop] = config[prop];
}, this);
}
if (nalUnit.nalUnitType === 'pic_parameter_set_rbsp' &&
!pps) {
pps = nalUnit.data;
track.pps = [nalUnit.data];
}
// buffer video until flush() is called
nalUnits.push(nalUnit);
};
this.flush = function() {
var
frames,
gopForFusion,
gops,
moof,
mdat,
boxes;
// Throw away nalUnits at the start of the byte stream until
// we find the first AUD
while (nalUnits.length) {
if (nalUnits[0].nalUnitType === 'access_unit_delimiter_rbsp') {
break;
}
nalUnits.shift();
}
// Return early if no video data has been observed
if (nalUnits.length === 0) {
this.resetStream_();
this.trigger('done', 'VideoSegmentStream');
return;
}
// Organize the raw nal-units into arrays that represent
// higher-level constructs such as frames and gops
// (group-of-pictures)
frames = this.groupNalsIntoFrames_(nalUnits);
gops = this.groupFramesIntoGops_(frames);
// If the first frame of this fragment is not a keyframe we have
// a problem since MSE (on Chrome) requires a leading keyframe.
//
// We have two approaches to repairing this situation:
// 1) GOP-FUSION:
// This is where we keep track of the GOPS (group-of-pictures)
// from previous fragments and attempt to find one that we can
// prepend to the current fragment in order to create a valid
// fragment.
// 2) KEYFRAME-PULLING:
// Here we search for the first keyframe in the fragment and
// throw away all the frames between the start of the fragment
// and that keyframe. We then extend the duration and pull the
// PTS of the keyframe forward so that it covers the time range
// of the frames that were disposed of.
//
// #1 is far prefereable over #2 which can cause "stuttering" but
// requires more things to be just right.
if (!gops[0][0].keyFrame) {
// Search for a gop for fusion from our gopCache
gopForFusion = this.getGopForFusion_(nalUnits[0], track);
if (gopForFusion) {
gops.unshift(gopForFusion);
// Adjust Gops' metadata to account for the inclusion of the
// new gop at the beginning
gops.byteLength += gopForFusion.byteLength;
gops.nalCount += gopForFusion.nalCount;
gops.pts = gopForFusion.pts;
gops.dts = gopForFusion.dts;
gops.duration += gopForFusion.duration;
} else {
// If we didn't find a candidate gop fall back to keyrame-pulling
gops = this.extendFirstKeyFrame_(gops);
}
}
// Trim gops to align with gopsToAlignWith
if (gopsToAlignWith.length) {
var alignedGops;
if (options.alignGopsAtEnd) {
alignedGops = this.alignGopsAtEnd_(gops);
} else {
alignedGops = this.alignGopsAtStart_(gops);
}
if (!alignedGops) {
// save all the nals in the last GOP into the gop cache
this.gopCache_.unshift({
gop: gops.pop(),
pps: track.pps,
sps: track.sps
});
// Keep a maximum of 6 GOPs in the cache
this.gopCache_.length = Math.min(6, this.gopCache_.length);
// Clear nalUnits
nalUnits = [];
// return early no gops can be aligned with desired gopsToAlignWith
this.resetStream_();
this.trigger('done', 'VideoSegmentStream');
return;
}
// Some gops were trimmed. clear dts info so minSegmentDts and pts are correct
// when recalculated before sending off to CoalesceStream
clearDtsInfo(track);
gops = alignedGops;
}
collectDtsInfo(track, gops);
// First, we have to build the index from byte locations to
// samples (that is, frames) in the video data
track.samples = this.generateSampleTable_(gops);
// Concatenate the video data and construct the mdat
mdat = mp4.mdat(this.concatenateNalData_(gops));
track.baseMediaDecodeTime = calculateTrackBaseMediaDecodeTime(track);
this.trigger('processedGopsInfo', gops.map(function(gop) {
return {
pts: gop.pts,
dts: gop.dts,
byteLength: gop.byteLength
};
}));
// save all the nals in the last GOP into the gop cache
this.gopCache_.unshift({
gop: gops.pop(),
pps: track.pps,
sps: track.sps
});
// Keep a maximum of 6 GOPs in the cache
this.gopCache_.length = Math.min(6, this.gopCache_.length);
// Clear nalUnits
nalUnits = [];
this.trigger('baseMediaDecodeTime', track.baseMediaDecodeTime);
this.trigger('timelineStartInfo', track.timelineStartInfo);
moof = mp4.moof(sequenceNumber, [track]);
// it would be great to allocate this array up front instead of
// throwing away hundreds of media segment fragments
boxes = new Uint8Array(moof.byteLength + mdat.byteLength);
// Bump the sequence number for next time
sequenceNumber++;
boxes.set(moof);
boxes.set(mdat, moof.byteLength);
this.trigger('data', {track: track, boxes: boxes});
this.resetStream_();
// Continue with the flush process now
this.trigger('done', 'VideoSegmentStream');
};
this.resetStream_ = function() {
clearDtsInfo(track);
// reset config and pps because they may differ across segments
// for instance, when we are rendition switching
config = undefined;
pps = undefined;
};
// Search for a candidate Gop for gop-fusion from the gop cache and
// return it or return null if no good candidate was found
this.getGopForFusion_ = function(nalUnit) {
var
halfSecond = 45000, // Half-a-second in a 90khz clock
allowableOverlap = 10000, // About 3 frames @ 30fps
nearestDistance = Infinity,
dtsDistance,
nearestGopObj,
currentGop,
currentGopObj,
i;
// Search for the GOP nearest to the beginning of this nal unit
for (i = 0; i < this.gopCache_.length; i++) {
currentGopObj = this.gopCache_[i];
currentGop = currentGopObj.gop;
// Reject Gops with different SPS or PPS
if (!(track.pps && arrayEquals(track.pps[0], currentGopObj.pps[0])) ||
!(track.sps && arrayEquals(track.sps[0], currentGopObj.sps[0]))) {
continue;
}
// Reject Gops that would require a negative baseMediaDecodeTime
if (currentGop.dts < track.timelineStartInfo.dts) {
continue;
}
// The distance between the end of the gop and the start of the nalUnit
dtsDistance = (nalUnit.dts - currentGop.dts) - currentGop.duration;
// Only consider GOPS that start before the nal unit and end within
// a half-second of the nal unit
if (dtsDistance >= -allowableOverlap &&
dtsDistance <= halfSecond) {
// Always use the closest GOP we found if there is more than
// one candidate
if (!nearestGopObj ||
nearestDistance > dtsDistance) {
nearestGopObj = currentGopObj;
nearestDistance = dtsDistance;
}
}
}
if (nearestGopObj) {
return nearestGopObj.gop;
}
return null;
};
this.extendFirstKeyFrame_ = function(gops) {
var currentGop;
if (!gops[0][0].keyFrame && gops.length > 1) {
// Remove the first GOP
currentGop = gops.shift();
gops.byteLength -= currentGop.byteLength;
gops.nalCount -= currentGop.nalCount;
// Extend the first frame of what is now the
// first gop to cover the time period of the
// frames we just removed
gops[0][0].dts = currentGop.dts;
gops[0][0].pts = currentGop.pts;
gops[0][0].duration += currentGop.duration;
}
return gops;
};
// Convert an array of nal units into an array of frames with each frame being
// composed of the nal units that make up that frame
// Also keep track of cummulative data about the frame from the nal units such
// as the frame duration, starting pts, etc.
this.groupNalsIntoFrames_ = function(nalUnits) {
var
i,
currentNal,
currentFrame = [],
frames = [];
currentFrame.byteLength = 0;
for (i = 0; i < nalUnits.length; i++) {
currentNal = nalUnits[i];
// Split on 'aud'-type nal units
if (currentNal.nalUnitType === 'access_unit_delimiter_rbsp') {
// Since the very first nal unit is expected to be an AUD
// only push to the frames array when currentFrame is not empty
if (currentFrame.length) {
currentFrame.duration = currentNal.dts - currentFrame.dts;
frames.push(currentFrame);
}
currentFrame = [currentNal];
currentFrame.byteLength = currentNal.data.byteLength;
currentFrame.pts = currentNal.pts;
currentFrame.dts = currentNal.dts;
} else {
// Specifically flag key frames for ease of use later
if (currentNal.nalUnitType === 'slice_layer_without_partitioning_rbsp_idr') {
currentFrame.keyFrame = true;
}
currentFrame.duration = currentNal.dts - currentFrame.dts;
currentFrame.byteLength += currentNal.data.byteLength;
currentFrame.push(currentNal);
}
}
// For the last frame, use the duration of the previous frame if we
// have nothing better to go on
if (frames.length &&
(!currentFrame.duration ||
currentFrame.duration <= 0)) {
currentFrame.duration = frames[frames.length - 1].duration;
}
// Push the final frame
frames.push(currentFrame);
return frames;
};
// Convert an array of frames into an array of Gop with each Gop being composed
// of the frames that make up that Gop
// Also keep track of cummulative data about the Gop from the frames such as the
// Gop duration, starting pts, etc.
this.groupFramesIntoGops_ = function(frames) {
var
i,
currentFrame,
currentGop = [],
gops = [];
// We must pre-set some of the values on the Gop since we
// keep running totals of these values
currentGop.byteLength = 0;
currentGop.nalCount = 0;
currentGop.duration = 0;
currentGop.pts = frames[0].pts;
currentGop.dts = frames[0].dts;
// store some metadata about all the Gops
gops.byteLength = 0;
gops.nalCount = 0;
gops.duration = 0;
gops.pts = frames[0].pts;
gops.dts = frames[0].dts;
for (i = 0; i < frames.length; i++) {
currentFrame = frames[i];
if (currentFrame.keyFrame) {
// Since the very first frame is expected to be an keyframe
// only push to the gops array when currentGop is not empty
if (currentGop.length) {
gops.push(currentGop);
gops.byteLength += currentGop.byteLength;
gops.nalCount += currentGop.nalCount;
gops.duration += currentGop.duration;
}
currentGop = [currentFrame];
currentGop.nalCount = currentFrame.length;
currentGop.byteLength = currentFrame.byteLength;
currentGop.pts = currentFrame.pts;
currentGop.dts = currentFrame.dts;
currentGop.duration = currentFrame.duration;
} else {
currentGop.duration += currentFrame.duration;
currentGop.nalCount += currentFrame.length;
currentGop.byteLength += currentFrame.byteLength;
currentGop.push(currentFrame);
}
}
if (gops.length && currentGop.duration <= 0) {
currentGop.duration = gops[gops.length - 1].duration;
}
gops.byteLength += currentGop.byteLength;
gops.nalCount += currentGop.nalCount;
gops.duration += currentGop.duration;
// push the final Gop
gops.push(currentGop);
return gops;
};
// generate the track's sample table from an array of gops
this.generateSampleTable_ = function(gops, baseDataOffset) {
var
h, i,
sample,
currentGop,
currentFrame,
dataOffset = baseDataOffset || 0,
samples = [];
for (h = 0; h < gops.length; h++) {
currentGop = gops[h];
for (i = 0; i < currentGop.length; i++) {
currentFrame = currentGop[i];
sample = createDefaultSample();
sample.dataOffset = dataOffset;
sample.compositionTimeOffset = currentFrame.pts - currentFrame.dts;
sample.duration = currentFrame.duration;
sample.size = 4 * currentFrame.length; // Space for nal unit size
sample.size += currentFrame.byteLength;
if (currentFrame.keyFrame) {
sample.flags.dependsOn = 2;
}
dataOffset += sample.size;
samples.push(sample);
}
}
return samples;
};
// generate the track's raw mdat data from an array of gops
this.concatenateNalData_ = function(gops) {
var
h, i, j,
currentGop,
currentFrame,
currentNal,
dataOffset = 0,
nalsByteLength = gops.byteLength,
numberOfNals = gops.nalCount,
totalByteLength = nalsByteLength + 4 * numberOfNals,
data = new Uint8Array(totalByteLength),
view = new DataView(data.buffer);
// For each Gop..
for (h = 0; h < gops.length; h++) {
currentGop = gops[h];
// For each Frame..
for (i = 0; i < currentGop.length; i++) {
currentFrame = currentGop[i];
// For each NAL..
for (j = 0; j < currentFrame.length; j++) {
currentNal = currentFrame[j];
view.setUint32(dataOffset, currentNal.data.byteLength);
dataOffset += 4;
data.set(currentNal.data, dataOffset);
dataOffset += currentNal.data.byteLength;
}
}
}
return data;
};
// trim gop list to the first gop found that has a matching pts with a gop in the list
// of gopsToAlignWith starting from the START of the list
this.alignGopsAtStart_ = function(gops) {
var alignIndex, gopIndex, align, gop, byteLength, nalCount, duration, alignedGops;
byteLength = gops.byteLength;
nalCount = gops.nalCount;
duration = gops.duration;
alignIndex = gopIndex = 0;
while (alignIndex < gopsToAlignWith.length && gopIndex < gops.length) {
align = gopsToAlignWith[alignIndex];
gop = gops[gopIndex];
if (align.pts === gop.pts) {
break;
}
if (gop.pts > align.pts) {
// this current gop starts after the current gop we want to align on, so increment
// align index
alignIndex++;
continue;
}
// current gop starts before the current gop we want to align on. so increment gop
// index
gopIndex++;
byteLength -= gop.byteLength;
nalCount -= gop.nalCount;
duration -= gop.duration;
}
if (gopIndex === 0) {
// no gops to trim
return gops;
}
if (gopIndex === gops.length) {
// all gops trimmed, skip appending all gops
return null;
}
alignedGops = gops.slice(gopIndex);
alignedGops.byteLength = byteLength;
alignedGops.duration = duration;
alignedGops.nalCount = nalCount;
alignedGops.pts = alignedGops[0].pts;
alignedGops.dts = alignedGops[0].dts;
return alignedGops;
};
// trim gop list to the first gop found that has a matching pts with a gop in the list
// of gopsToAlignWith starting from the END of the list
this.alignGopsAtEnd_ = function(gops) {
var alignIndex, gopIndex, align, gop, alignEndIndex, matchFound;
alignIndex = gopsToAlignWith.length - 1;
gopIndex = gops.length - 1;
alignEndIndex = null;
matchFound = false;
while (alignIndex >= 0 && gopIndex >= 0) {
align = gopsToAlignWith[alignIndex];
gop = gops[gopIndex];
if (align.pts === gop.pts) {
matchFound = true;
break;
}
if (align.pts > gop.pts) {
alignIndex--;
continue;
}
if (alignIndex === gopsToAlignWith.length - 1) {
// gop.pts is greater than the last alignment candidate. If no match is found
// by the end of this loop, we still want to append gops that come after this
// point
alignEndIndex = gopIndex;
}
gopIndex--;
}
if (!matchFound && alignEndIndex === null) {
return null;
}
var trimIndex;
if (matchFound) {
trimIndex = gopIndex;
} else {
trimIndex = alignEndIndex;
}
if (trimIndex === 0) {
return gops;
}
var alignedGops = gops.slice(trimIndex);
var metadata = alignedGops.reduce(function(total, gop) {
total.byteLength += gop.byteLength;
total.duration += gop.duration;
total.nalCount += gop.nalCount;
return total;
}, { byteLength: 0, duration: 0, nalCount: 0 });
alignedGops.byteLength = metadata.byteLength;
alignedGops.duration = metadata.duration;
alignedGops.nalCount = metadata.nalCount;
alignedGops.pts = alignedGops[0].pts;
alignedGops.dts = alignedGops[0].dts;
return alignedGops;
};
this.alignGopsWith = function(newGopsToAlignWith) {
gopsToAlignWith = newGopsToAlignWith;
};
};
VideoSegmentStream.prototype = new Stream();
/**
* Store information about the start and end of the track and the
* duration for each frame/sample we process in order to calculate
* the baseMediaDecodeTime
*/
collectDtsInfo = function(track, data) {
if (typeof data.pts === 'number') {
if (track.timelineStartInfo.pts === undefined) {
track.timelineStartInfo.pts = data.pts;
}
if (track.minSegmentPts === undefined) {
track.minSegmentPts = data.pts;
} else {
track.minSegmentPts = Math.min(track.minSegmentPts, data.pts);
}
if (track.maxSegmentPts === undefined) {
track.maxSegmentPts = data.pts;
} else {
track.maxSegmentPts = Math.max(track.maxSegmentPts, data.pts);
}
}
if (typeof data.dts === 'number') {
if (track.timelineStartInfo.dts === undefined) {
track.timelineStartInfo.dts = data.dts;
}
if (track.minSegmentDts === undefined) {
track.minSegmentDts = data.dts;
} else {
track.minSegmentDts = Math.min(track.minSegmentDts, data.dts);
}
if (track.maxSegmentDts === undefined) {
track.maxSegmentDts = data.dts;
} else {
track.maxSegmentDts = Math.max(track.maxSegmentDts, data.dts);
}
}
};
/**
* Clear values used to calculate the baseMediaDecodeTime between
* tracks
*/
clearDtsInfo = function(track) {
delete track.minSegmentDts;
delete track.maxSegmentDts;
delete track.minSegmentPts;
delete track.maxSegmentPts;
};
/**
* Calculate the track's baseMediaDecodeTime based on the earliest
* DTS the transmuxer has ever seen and the minimum DTS for the
* current track
*/
calculateTrackBaseMediaDecodeTime = function(track) {
var
baseMediaDecodeTime,
scale,
// Calculate the distance, in time, that this segment starts from the start
// of the timeline (earliest time seen since the transmuxer initialized)
timeSinceStartOfTimeline = track.minSegmentDts - track.timelineStartInfo.dts;
// track.timelineStartInfo.baseMediaDecodeTime is the location, in time, where
// we want the start of the first segment to be placed
baseMediaDecodeTime = track.timelineStartInfo.baseMediaDecodeTime;
// Add to that the distance this segment is from the very first
baseMediaDecodeTime += timeSinceStartOfTimeline;
// baseMediaDecodeTime must not become negative
baseMediaDecodeTime = Math.max(0, baseMediaDecodeTime);
if (track.type === 'audio') {
// Audio has a different clock equal to the sampling_rate so we need to
// scale the PTS values into the clock rate of the track
scale = track.samplerate / ONE_SECOND_IN_TS;
baseMediaDecodeTime *= scale;
baseMediaDecodeTime = Math.floor(baseMediaDecodeTime);
}
return baseMediaDecodeTime;
};
/**
* A Stream that can combine multiple streams (ie. audio & video)
* into a single output segment for MSE. Also supports audio-only
* and video-only streams.
*/
CoalesceStream = function(options, metadataStream) {
// Number of Tracks per output segment
// If greater than 1, we combine multiple
// tracks into a single segment
this.numberOfTracks = 0;
this.metadataStream = metadataStream;
if (typeof options.remux !== 'undefined') {
this.remuxTracks = !!options.remux;
} else {
this.remuxTracks = true;
}
this.pendingTracks = [];
this.videoTrack = null;
this.pendingBoxes = [];
this.pendingCaptions = [];
this.pendingMetadata = [];
this.pendingBytes = 0;
this.emittedTracks = 0;
CoalesceStream.prototype.init.call(this);
// Take output from multiple
this.push = function(output) {
// buffer incoming captions until the associated video segment
// finishes
if (output.text) {
return this.pendingCaptions.push(output);
}
// buffer incoming id3 tags until the final flush
if (output.frames) {
return this.pendingMetadata.push(output);
}
// Add this track to the list of pending tracks and store
// important information required for the construction of
// the final segment
this.pendingTracks.push(output.track);
this.pendingBoxes.push(output.boxes);
this.pendingBytes += output.boxes.byteLength;
if (output.track.type === 'video') {
this.videoTrack = output.track;
}
if (output.track.type === 'audio') {
this.audioTrack = output.track;
}
};
};
CoalesceStream.prototype = new Stream();
CoalesceStream.prototype.flush = function(flushSource) {
var
offset = 0,
event = {
captions: [],
captionStreams: {},
metadata: [],
info: {}
},
caption,
id3,
initSegment,
timelineStartPts = 0,
i;
if (this.pendingTracks.length < this.numberOfTracks) {
if (flushSource !== 'VideoSegmentStream' &&
flushSource !== 'AudioSegmentStream') {
// Return because we haven't received a flush from a data-generating
// portion of the segment (meaning that we have only recieved meta-data
// or captions.)
return;
} else if (this.remuxTracks) {
// Return until we have enough tracks from the pipeline to remux (if we
// are remuxing audio and video into a single MP4)
return;
} else if (this.pendingTracks.length === 0) {
// In the case where we receive a flush without any data having been
// received we consider it an emitted track for the purposes of coalescing
// `done` events.
// We do this for the case where there is an audio and video track in the
// segment but no audio data. (seen in several playlists with alternate
// audio tracks and no audio present in the main TS segments.)
this.emittedTracks++;
if (this.emittedTracks >= this.numberOfTracks) {
this.trigger('done');
this.emittedTracks = 0;
}
return;
}
}
if (this.videoTrack) {
timelineStartPts = this.videoTrack.timelineStartInfo.pts;
VIDEO_PROPERTIES.forEach(function(prop) {
event.info[prop] = this.videoTrack[prop];
}, this);
} else if (this.audioTrack) {
timelineStartPts = this.audioTrack.timelineStartInfo.pts;
AUDIO_PROPERTIES.forEach(function(prop) {
event.info[prop] = this.audioTrack[prop];
}, this);
}
if (this.pendingTracks.length === 1) {
event.type = this.pendingTracks[0].type;
} else {
event.type = 'combined';
}
this.emittedTracks += this.pendingTracks.length;
initSegment = mp4.initSegment(this.pendingTracks);
// Create a new typed array to hold the init segment
event.initSegment = new Uint8Array(initSegment.byteLength);
// Create an init segment containing a moov
// and track definitions
event.initSegment.set(initSegment);
// Create a new typed array to hold the moof+mdats
event.data = new Uint8Array(this.pendingBytes);
// Append each moof+mdat (one per track) together
for (i = 0; i < this.pendingBoxes.length; i++) {
event.data.set(this.pendingBoxes[i], offset);
offset += this.pendingBoxes[i].byteLength;
}
// Translate caption PTS times into second offsets into the
// video timeline for the segment, and add track info
for (i = 0; i < this.pendingCaptions.length; i++) {
caption = this.pendingCaptions[i];
caption.startTime = (caption.startPts - timelineStartPts);
caption.startTime /= 90e3;
caption.endTime = (caption.endPts - timelineStartPts);
caption.endTime /= 90e3;
event.captionStreams[caption.stream] = true;
event.captions.push(caption);
}
// Translate ID3 frame PTS times into second offsets into the
// video timeline for the segment
for (i = 0; i < this.pendingMetadata.length; i++) {
id3 = this.pendingMetadata[i];
id3.cueTime = (id3.pts - timelineStartPts);
id3.cueTime /= 90e3;
event.metadata.push(id3);
}
// We add this to every single emitted segment even though we only need
// it for the first
event.metadata.dispatchType = this.metadataStream.dispatchType;
// Reset stream state
this.pendingTracks.length = 0;
this.videoTrack = null;
this.pendingBoxes.length = 0;
this.pendingCaptions.length = 0;
this.pendingBytes = 0;
this.pendingMetadata.length = 0;
// Emit the built segment
this.trigger('data', event);
// Only emit `done` if all tracks have been flushed and emitted
if (this.emittedTracks >= this.numberOfTracks) {
this.trigger('done');
this.emittedTracks = 0;
}
};
/**
* A Stream that expects MP2T binary data as input and produces
* corresponding media segments, suitable for use with Media Source
* Extension (MSE) implementations that support the ISO BMFF byte
* stream format, like Chrome.
*/
Transmuxer = function(options) {
var
self = this,
hasFlushed = true,
videoTrack,
audioTrack;
Transmuxer.prototype.init.call(this);
options = options || {};
this.baseMediaDecodeTime = options.baseMediaDecodeTime || 0;
this.transmuxPipeline_ = {};
this.setupAacPipeline = function() {
var pipeline = {};
this.transmuxPipeline_ = pipeline;
pipeline.type = 'aac';
pipeline.metadataStream = new m2ts.MetadataStream();
// set up the parsing pipeline
pipeline.aacStream = new AacStream();
pipeline.audioTimestampRolloverStream = new m2ts.TimestampRolloverStream('audio');
pipeline.timedMetadataTimestampRolloverStream = new m2ts.TimestampRolloverStream('timed-metadata');
pipeline.adtsStream = new AdtsStream();
pipeline.coalesceStream = new CoalesceStream(options, pipeline.metadataStream);
pipeline.headOfPipeline = pipeline.aacStream;
pipeline.aacStream
.pipe(pipeline.audioTimestampRolloverStream)
.pipe(pipeline.adtsStream);
pipeline.aacStream
.pipe(pipeline.timedMetadataTimestampRolloverStream)
.pipe(pipeline.metadataStream)
.pipe(pipeline.coalesceStream);
pipeline.metadataStream.on('timestamp', function(frame) {
pipeline.aacStream.setTimestamp(frame.timeStamp);
});
pipeline.aacStream.on('data', function(data) {
if (data.type === 'timed-metadata' && !pipeline.audioSegmentStream) {
audioTrack = audioTrack || {
timelineStartInfo: {
baseMediaDecodeTime: self.baseMediaDecodeTime
},
codec: 'adts',
type: 'audio'
};
// hook up the audio segment stream to the first track with aac data
pipeline.coalesceStream.numberOfTracks++;
pipeline.audioSegmentStream = new AudioSegmentStream(audioTrack);
// Set up the final part of the audio pipeline
pipeline.adtsStream
.pipe(pipeline.audioSegmentStream)
.pipe(pipeline.coalesceStream);
}
});
// Re-emit any data coming from the coalesce stream to the outside world
pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data'));
// Let the consumer know we have finished flushing the entire pipeline
pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));
};
this.setupTsPipeline = function() {
var pipeline = {};
this.transmuxPipeline_ = pipeline;
pipeline.type = 'ts';
pipeline.metadataStream = new m2ts.MetadataStream();
// set up the parsing pipeline
pipeline.packetStream = new m2ts.TransportPacketStream();
pipeline.parseStream = new m2ts.TransportParseStream();
pipeline.elementaryStream = new m2ts.ElementaryStream();
pipeline.videoTimestampRolloverStream = new m2ts.TimestampRolloverStream('video');
pipeline.audioTimestampRolloverStream = new m2ts.TimestampRolloverStream('audio');
pipeline.timedMetadataTimestampRolloverStream = new m2ts.TimestampRolloverStream('timed-metadata');
pipeline.adtsStream = new AdtsStream();
pipeline.h264Stream = new H264Stream();
pipeline.captionStream = new m2ts.CaptionStream();
pipeline.coalesceStream = new CoalesceStream(options, pipeline.metadataStream);
pipeline.headOfPipeline = pipeline.packetStream;
// disassemble MPEG2-TS packets into elementary streams
pipeline.packetStream
.pipe(pipeline.parseStream)
.pipe(pipeline.elementaryStream);
// !!THIS ORDER IS IMPORTANT!!
// demux the streams
pipeline.elementaryStream
.pipe(pipeline.videoTimestampRolloverStream)
.pipe(pipeline.h264Stream);
pipeline.elementaryStream
.pipe(pipeline.audioTimestampRolloverStream)
.pipe(pipeline.adtsStream);
pipeline.elementaryStream
.pipe(pipeline.timedMetadataTimestampRolloverStream)
.pipe(pipeline.metadataStream)
.pipe(pipeline.coalesceStream);
// Hook up CEA-608/708 caption stream
pipeline.h264Stream.pipe(pipeline.captionStream)
.pipe(pipeline.coalesceStream);
pipeline.elementaryStream.on('data', function(data) {
var i;
if (data.type === 'metadata') {
i = data.tracks.length;
// scan the tracks listed in the metadata
while (i--) {
if (!videoTrack && data.tracks[i].type === 'video') {
videoTrack = data.tracks[i];
videoTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;
} else if (!audioTrack && data.tracks[i].type === 'audio') {
audioTrack = data.tracks[i];
audioTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;
}
}
// hook up the video segment stream to the first track with h264 data
if (videoTrack && !pipeline.videoSegmentStream) {
pipeline.coalesceStream.numberOfTracks++;
pipeline.videoSegmentStream = new VideoSegmentStream(videoTrack, options);
pipeline.videoSegmentStream.on('timelineStartInfo', function(timelineStartInfo) {
// When video emits timelineStartInfo data after a flush, we forward that
// info to the AudioSegmentStream, if it exists, because video timeline
// data takes precedence.
if (audioTrack) {
audioTrack.timelineStartInfo = timelineStartInfo;
// On the first segment we trim AAC frames that exist before the
// very earliest DTS we have seen in video because Chrome will
// interpret any video track with a baseMediaDecodeTime that is
// non-zero as a gap.
pipeline.audioSegmentStream.setEarliestDts(timelineStartInfo.dts);
}
});
pipeline.videoSegmentStream.on('processedGopsInfo',
self.trigger.bind(self, 'gopInfo'));
pipeline.videoSegmentStream.on('baseMediaDecodeTime', function(baseMediaDecodeTime) {
if (audioTrack) {
pipeline.audioSegmentStream.setVideoBaseMediaDecodeTime(baseMediaDecodeTime);
}
});
// Set up the final part of the video pipeline
pipeline.h264Stream
.pipe(pipeline.videoSegmentStream)
.pipe(pipeline.coalesceStream);
}
if (audioTrack && !pipeline.audioSegmentStream) {
// hook up the audio segment stream to the first track with aac data
pipeline.coalesceStream.numberOfTracks++;
pipeline.audioSegmentStream = new AudioSegmentStream(audioTrack);
// Set up the final part of the audio pipeline
pipeline.adtsStream
.pipe(pipeline.audioSegmentStream)
.pipe(pipeline.coalesceStream);
}
}
});
// Re-emit any data coming from the coalesce stream to the outside world
pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data'));
// Let the consumer know we have finished flushing the entire pipeline
pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));
};
// hook up the segment streams once track metadata is delivered
this.setBaseMediaDecodeTime = function(baseMediaDecodeTime) {
var pipeline = this.transmuxPipeline_;
this.baseMediaDecodeTime = baseMediaDecodeTime;
if (audioTrack) {
audioTrack.timelineStartInfo.dts = undefined;
audioTrack.timelineStartInfo.pts = undefined;
clearDtsInfo(audioTrack);
audioTrack.timelineStartInfo.baseMediaDecodeTime = baseMediaDecodeTime;
if (pipeline.audioTimestampRolloverStream) {
pipeline.audioTimestampRolloverStream.discontinuity();
}
}
if (videoTrack) {
if (pipeline.videoSegmentStream) {
pipeline.videoSegmentStream.gopCache_ = [];
pipeline.videoTimestampRolloverStream.discontinuity();
}
videoTrack.timelineStartInfo.dts = undefined;
videoTrack.timelineStartInfo.pts = undefined;
clearDtsInfo(videoTrack);
pipeline.captionStream.reset();
videoTrack.timelineStartInfo.baseMediaDecodeTime = baseMediaDecodeTime;
}
if (pipeline.timedMetadataTimestampRolloverStream) {
pipeline.timedMetadataTimestampRolloverStream.discontinuity();
}
};
this.setAudioAppendStart = function(timestamp) {
if (audioTrack) {
this.transmuxPipeline_.audioSegmentStream.setAudioAppendStart(timestamp);
}
};
this.alignGopsWith = function(gopsToAlignWith) {
if (videoTrack && this.transmuxPipeline_.videoSegmentStream) {
this.transmuxPipeline_.videoSegmentStream.alignGopsWith(gopsToAlignWith);
}
};
// feed incoming data to the front of the parsing pipeline
this.push = function(data) {
if (hasFlushed) {
var isAac = isLikelyAacData(data);
if (isAac && this.transmuxPipeline_.type !== 'aac') {
this.setupAacPipeline();
} else if (!isAac && this.transmuxPipeline_.type !== 'ts') {
this.setupTsPipeline();
}
hasFlushed = false;
}
this.transmuxPipeline_.headOfPipeline.push(data);
};
// flush any buffered data
this.flush = function() {
hasFlushed = true;
// Start at the top of the pipeline and flush all pending work
this.transmuxPipeline_.headOfPipeline.flush();
};
// Caption data has to be reset when seeking outside buffered range
this.resetCaptions = function() {
if (this.transmuxPipeline_.captionStream) {
this.transmuxPipeline_.captionStream.reset();
}
};
};
Transmuxer.prototype = new Stream();
module.exports = {
Transmuxer: Transmuxer,
VideoSegmentStream: VideoSegmentStream,
AudioSegmentStream: AudioSegmentStream,
AUDIO_PROPERTIES: AUDIO_PROPERTIES,
VIDEO_PROPERTIES: VIDEO_PROPERTIES
};
},{"../aac":4,"../codecs/adts.js":6,"../codecs/h264":7,"../data/silence":9,"../m2ts/m2ts.js":19,"../utils/clock":31,"../utils/stream.js":33,"./mp4-generator.js":25}],28:[function(require,module,exports){
'use strict';
var
tagTypes = {
0x08: 'audio',
0x09: 'video',
0x12: 'metadata'
},
hex = function(val) {
return '0x' + ('00' + val.toString(16)).slice(-2).toUpperCase();
},
hexStringList = function(data) {
var arr = [], i;
while (data.byteLength > 0) {
i = 0;
arr.push(hex(data[i++]));
data = data.subarray(i);
}
return arr.join(' ');
},
parseAVCTag = function(tag, obj) {
var
avcPacketTypes = [
'AVC Sequence Header',
'AVC NALU',
'AVC End-of-Sequence'
],
compositionTime = (tag[1] & parseInt('01111111', 2) << 16) | (tag[2] << 8) | tag[3];
obj = obj || {};
obj.avcPacketType = avcPacketTypes[tag[0]];
obj.CompositionTime = (tag[1] & parseInt('10000000', 2)) ? -compositionTime : compositionTime;
if (tag[0] === 1) {
obj.nalUnitTypeRaw = hexStringList(tag.subarray(4, 100));
} else {
obj.data = hexStringList(tag.subarray(4));
}
return obj;
},
parseVideoTag = function(tag, obj) {
var
frameTypes = [
'Unknown',
'Keyframe (for AVC, a seekable frame)',
'Inter frame (for AVC, a nonseekable frame)',
'Disposable inter frame (H.263 only)',
'Generated keyframe (reserved for server use only)',
'Video info/command frame'
],
codecID = tag[0] & parseInt('00001111', 2);
obj = obj || {};
obj.frameType = frameTypes[(tag[0] & parseInt('11110000', 2)) >>> 4];
obj.codecID = codecID;
if (codecID === 7) {
return parseAVCTag(tag.subarray(1), obj);
}
return obj;
},
parseAACTag = function(tag, obj) {
var packetTypes = [
'AAC Sequence Header',
'AAC Raw'
];
obj = obj || {};
obj.aacPacketType = packetTypes[tag[0]];
obj.data = hexStringList(tag.subarray(1));
return obj;
},
parseAudioTag = function(tag, obj) {
var
formatTable = [
'Linear PCM, platform endian',
'ADPCM',
'MP3',
'Linear PCM, little endian',
'Nellymoser 16-kHz mono',
'Nellymoser 8-kHz mono',
'Nellymoser',
'G.711 A-law logarithmic PCM',
'G.711 mu-law logarithmic PCM',
'reserved',
'AAC',
'Speex',
'MP3 8-Khz',
'Device-specific sound'
],
samplingRateTable = [
'5.5-kHz',
'11-kHz',
'22-kHz',
'44-kHz'
],
soundFormat = (tag[0] & parseInt('11110000', 2)) >>> 4;
obj = obj || {};
obj.soundFormat = formatTable[soundFormat];
obj.soundRate = samplingRateTable[(tag[0] & parseInt('00001100', 2)) >>> 2];
obj.soundSize = ((tag[0] & parseInt('00000010', 2)) >>> 1) ? '16-bit' : '8-bit';
obj.soundType = (tag[0] & parseInt('00000001', 2)) ? 'Stereo' : 'Mono';
if (soundFormat === 10) {
return parseAACTag(tag.subarray(1), obj);
}
return obj;
},
parseGenericTag = function(tag) {
return {
tagType: tagTypes[tag[0]],
dataSize: (tag[1] << 16) | (tag[2] << 8) | tag[3],
timestamp: (tag[7] << 24) | (tag[4] << 16) | (tag[5] << 8) | tag[6],
streamID: (tag[8] << 16) | (tag[9] << 8) | tag[10]
};
},
inspectFlvTag = function(tag) {
var header = parseGenericTag(tag);
switch (tag[0]) {
case 0x08:
parseAudioTag(tag.subarray(11), header);
break;
case 0x09:
parseVideoTag(tag.subarray(11), header);
break;
case 0x12:
}
return header;
},
inspectFlv = function(bytes) {
var i = 9, // header
dataSize,
parsedResults = [],
tag;
// traverse the tags
i += 4; // skip previous tag size
while (i < bytes.byteLength) {
dataSize = bytes[i + 1] << 16;
dataSize |= bytes[i + 2] << 8;
dataSize |= bytes[i + 3];
dataSize += 11;
tag = bytes.subarray(i, i + dataSize);
parsedResults.push(inspectFlvTag(tag));
i += dataSize + 4;
}
return parsedResults;
},
textifyFlv = function(flvTagArray) {
return JSON.stringify(flvTagArray, null, 2);
};
module.exports = {
inspectTag: inspectFlvTag,
inspect: inspectFlv,
textify: textifyFlv
};
},{}],29:[function(require,module,exports){
(function (global){
/**
* mux.js
*
* Copyright (c) 2015 Brightcove
* All rights reserved.
*
* Parse the internal MP4 structure into an equivalent javascript
* object.
*/
'use strict';
var
inspectMp4,
textifyMp4,
parseType = require('../mp4/probe').parseType,
parseMp4Date = function(seconds) {
return new Date(seconds * 1000 - 2082844800000);
},
parseSampleFlags = function(flags) {
return {
isLeading: (flags[0] & 0x0c) >>> 2,
dependsOn: flags[0] & 0x03,
isDependedOn: (flags[1] & 0xc0) >>> 6,
hasRedundancy: (flags[1] & 0x30) >>> 4,
paddingValue: (flags[1] & 0x0e) >>> 1,
isNonSyncSample: flags[1] & 0x01,
degradationPriority: (flags[2] << 8) | flags[3]
};
},
nalParse = function(avcStream) {
var
avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength),
result = [],
i,
length;
for (i = 0; i + 4 < avcStream.length; i += length) {
length = avcView.getUint32(i);
i += 4;
// bail if this doesn't appear to be an H264 stream
if (length <= 0) {
result.push('<span style=\'color:red;\'>MALFORMED DATA</span>');
continue;
}
switch (avcStream[i] & 0x1F) {
case 0x01:
result.push('slice_layer_without_partitioning_rbsp');
break;
case 0x05:
result.push('slice_layer_without_partitioning_rbsp_idr');
break;
case 0x06:
result.push('sei_rbsp');
break;
case 0x07:
result.push('seq_parameter_set_rbsp');
break;
case 0x08:
result.push('pic_parameter_set_rbsp');
break;
case 0x09:
result.push('access_unit_delimiter_rbsp');
break;
default:
result.push('UNKNOWN NAL - ' + avcStream[i] & 0x1F);
break;
}
}
return result;
},
// registry of handlers for individual mp4 box types
parse = {
// codingname, not a first-class box type. stsd entries share the
// same format as real boxes so the parsing infrastructure can be
// shared
avc1: function(data) {
var view = new DataView(data.buffer, data.byteOffset, data.byteLength);
return {
dataReferenceIndex: view.getUint16(6),
width: view.getUint16(24),
height: view.getUint16(26),
horizresolution: view.getUint16(28) + (view.getUint16(30) / 16),
vertresolution: view.getUint16(32) + (view.getUint16(34) / 16),
frameCount: view.getUint16(40),
depth: view.getUint16(74),
config: inspectMp4(data.subarray(78, data.byteLength))
};
},
avcC: function(data) {
var
view = new DataView(data.buffer, data.byteOffset, data.byteLength),
result = {
configurationVersion: data[0],
avcProfileIndication: data[1],
profileCompatibility: data[2],
avcLevelIndication: data[3],
lengthSizeMinusOne: data[4] & 0x03,
sps: [],
pps: []
},
numOfSequenceParameterSets = data[5] & 0x1f,
numOfPictureParameterSets,
nalSize,
offset,
i;
// iterate past any SPSs
offset = 6;
for (i = 0; i < numOfSequenceParameterSets; i++) {
nalSize = view.getUint16(offset);
offset += 2;
result.sps.push(new Uint8Array(data.subarray(offset, offset + nalSize)));
offset += nalSize;
}
// iterate past any PPSs
numOfPictureParameterSets = data[offset];
offset++;
for (i = 0; i < numOfPictureParameterSets; i++) {
nalSize = view.getUint16(offset);
offset += 2;
result.pps.push(new Uint8Array(data.subarray(offset, offset + nalSize)));
offset += nalSize;
}
return result;
},
btrt: function(data) {
var view = new DataView(data.buffer, data.byteOffset, data.byteLength);
return {
bufferSizeDB: view.getUint32(0),
maxBitrate: view.getUint32(4),
avgBitrate: view.getUint32(8)
};
},
esds: function(data) {
return {
version: data[0],
flags: new Uint8Array(data.subarray(1, 4)),
esId: (data[6] << 8) | data[7],
streamPriority: data[8] & 0x1f,
decoderConfig: {
objectProfileIndication: data[11],
streamType: (data[12] >>> 2) & 0x3f,
bufferSize: (data[13] << 16) | (data[14] << 8) | data[15],
maxBitrate: (data[16] << 24) |
(data[17] << 16) |
(data[18] << 8) |
data[19],
avgBitrate: (data[20] << 24) |
(data[21] << 16) |
(data[22] << 8) |
data[23],
decoderConfigDescriptor: {
tag: data[24],
length: data[25],
audioObjectType: (data[26] >>> 3) & 0x1f,
samplingFrequencyIndex: ((data[26] & 0x07) << 1) |
((data[27] >>> 7) & 0x01),
channelConfiguration: (data[27] >>> 3) & 0x0f
}
}
};
},
ftyp: function(data) {
var
view = new DataView(data.buffer, data.byteOffset, data.byteLength),
result = {
majorBrand: parseType(data.subarray(0, 4)),
minorVersion: view.getUint32(4),
compatibleBrands: []
},
i = 8;
while (i < data.byteLength) {
result.compatibleBrands.push(parseType(data.subarray(i, i + 4)));
i += 4;
}
return result;
},
dinf: function(data) {
return {
boxes: inspectMp4(data)
};
},
dref: function(data) {
return {
version: data[0],
flags: new Uint8Array(data.subarray(1, 4)),
dataReferences: inspectMp4(data.subarray(8))
};
},
hdlr: function(data) {
var
view = new DataView(data.buffer, data.byteOffset, data.byteLength),
result = {
version: view.getUint8(0),
flags: new Uint8Array(data.subarray(1, 4)),
handlerType: parseType(data.subarray(8, 12)),
name: ''
},
i = 8;
// parse out the name field
for (i = 24; i < data.byteLength; i++) {
if (data[i] === 0x00) {
// the name field is null-terminated
i++;
break;
}
result.name += String.fromCharCode(data[i]);
}
// decode UTF-8 to javascript's internal representation
// see http://ecmanaut.blogspot.com/2006/07/encoding-decoding-utf8-in-javascript.html
result.name = decodeURIComponent(global.escape(result.name));
return result;
},
mdat: function(data) {
return {
byteLength: data.byteLength,
nals: nalParse(data)
};
},
mdhd: function(data) {
var
view = new DataView(data.buffer, data.byteOffset, data.byteLength),
i = 4,
language,
result = {
version: view.getUint8(0),
flags: new Uint8Array(data.subarray(1, 4)),
language: ''
};
if (result.version === 1) {
i += 4;
result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes
i += 8;
result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes
i += 4;
result.timescale = view.getUint32(i);
i += 8;
result.duration = view.getUint32(i); // truncating top 4 bytes
} else {
result.creationTime = parseMp4Date(view.getUint32(i));
i += 4;
result.modificationTime = parseMp4Date(view.getUint32(i));
i += 4;
result.timescale = view.getUint32(i);
i += 4;
result.duration = view.getUint32(i);
}
i += 4;
// language is stored as an ISO-639-2/T code in an array of three 5-bit fields
// each field is the packed difference between its ASCII value and 0x60
language = view.getUint16(i);
result.language += String.fromCharCode((language >> 10) + 0x60);
result.language += String.fromCharCode(((language & 0x03c0) >> 5) + 0x60);
result.language += String.fromCharCode((language & 0x1f) + 0x60);
return result;
},
mdia: function(data) {
return {
boxes: inspectMp4(data)
};
},
mfhd: function(data) {
return {
version: data[0],
flags: new Uint8Array(data.subarray(1, 4)),
sequenceNumber: (data[4] << 24) |
(data[5] << 16) |
(data[6] << 8) |
(data[7])
};
},
minf: function(data) {
return {
boxes: inspectMp4(data)
};
},
// codingname, not a first-class box type. stsd entries share the
// same format as real boxes so the parsing infrastructure can be
// shared
mp4a: function(data) {
var
view = new DataView(data.buffer, data.byteOffset, data.byteLength),
result = {
// 6 bytes reserved
dataReferenceIndex: view.getUint16(6),
// 4 + 4 bytes reserved
channelcount: view.getUint16(16),
samplesize: view.getUint16(18),
// 2 bytes pre_defined
// 2 bytes reserved
samplerate: view.getUint16(24) + (view.getUint16(26) / 65536)
};
// if there are more bytes to process, assume this is an ISO/IEC
// 14496-14 MP4AudioSampleEntry and parse the ESDBox
if (data.byteLength > 28) {
result.streamDescriptor = inspectMp4(data.subarray(28))[0];
}
return result;
},
moof: function(data) {
return {
boxes: inspectMp4(data)
};
},
moov: function(data) {
return {
boxes: inspectMp4(data)
};
},
mvex: function(data) {
return {
boxes: inspectMp4(data)
};
},
mvhd: function(data) {
var
view = new DataView(data.buffer, data.byteOffset, data.byteLength),
i = 4,
result = {
version: view.getUint8(0),
flags: new Uint8Array(data.subarray(1, 4))
};
if (result.version === 1) {
i += 4;
result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes
i += 8;
result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes
i += 4;
result.timescale = view.getUint32(i);
i += 8;
result.duration = view.getUint32(i); // truncating top 4 bytes
} else {
result.creationTime = parseMp4Date(view.getUint32(i));
i += 4;
result.modificationTime = parseMp4Date(view.getUint32(i));
i += 4;
result.timescale = view.getUint32(i);
i += 4;
result.duration = view.getUint32(i);
}
i += 4;
// convert fixed-point, base 16 back to a number
result.rate = view.getUint16(i) + (view.getUint16(i + 2) / 16);
i += 4;
result.volume = view.getUint8(i) + (view.getUint8(i + 1) / 8);
i += 2;
i += 2;
i += 2 * 4;
result.matrix = new Uint32Array(data.subarray(i, i + (9 * 4)));
i += 9 * 4;
i += 6 * 4;
result.nextTrackId = view.getUint32(i);
return result;
},
pdin: function(data) {
var view = new DataView(data.buffer, data.byteOffset, data.byteLength);
return {
version: view.getUint8(0),
flags: new Uint8Array(data.subarray(1, 4)),
rate: view.getUint32(4),
initialDelay: view.getUint32(8)
};
},
sdtp: function(data) {
var
result = {
version: data[0],
flags: new Uint8Array(data.subarray(1, 4)),
samples: []
}, i;
for (i = 4; i < data.byteLength; i++) {
result.samples.push({
dependsOn: (data[i] & 0x30) >> 4,
isDependedOn: (data[i] & 0x0c) >> 2,
hasRedundancy: data[i] & 0x03
});
}
return result;
},
sidx: function(data) {
var view = new DataView(data.buffer, data.byteOffset, data.byteLength),
result = {
version: data[0],
flags: new Uint8Array(data.subarray(1, 4)),
references: [],
referenceId: view.getUint32(4),
timescale: view.getUint32(8),
earliestPresentationTime: view.getUint32(12),
firstOffset: view.getUint32(16)
},
referenceCount = view.getUint16(22),
i;
for (i = 24; referenceCount; i += 12, referenceCount--) {
result.references.push({
referenceType: (data[i] & 0x80) >>> 7,
referencedSize: view.getUint32(i) & 0x7FFFFFFF,
subsegmentDuration: view.getUint32(i + 4),
startsWithSap: !!(data[i + 8] & 0x80),
sapType: (data[i + 8] & 0x70) >>> 4,
sapDeltaTime: view.getUint32(i + 8) & 0x0FFFFFFF
});
}
return result;
},
smhd: function(data) {
return {
version: data[0],
flags: new Uint8Array(data.subarray(1, 4)),
balance: data[4] + (data[5] / 256)
};
},
stbl: function(data) {
return {
boxes: inspectMp4(data)
};
},
stco: function(data) {
var
view = new DataView(data.buffer, data.byteOffset, data.byteLength),
result = {
version: data[0],
flags: new Uint8Array(data.subarray(1, 4)),
chunkOffsets: []
},
entryCount = view.getUint32(4),
i;
for (i = 8; entryCount; i += 4, entryCount--) {
result.chunkOffsets.push(view.getUint32(i));
}
return result;
},
stsc: function(data) {
var
view = new DataView(data.buffer, data.byteOffset, data.byteLength),
entryCount = view.getUint32(4),
result = {
version: data[0],
flags: new Uint8Array(data.subarray(1, 4)),
sampleToChunks: []
},
i;
for (i = 8; entryCount; i += 12, entryCount--) {
result.sampleToChunks.push({
firstChunk: view.getUint32(i),
samplesPerChunk: view.getUint32(i + 4),
sampleDescriptionIndex: view.getUint32(i + 8)
});
}
return result;
},
stsd: function(data) {
return {
version: data[0],
flags: new Uint8Array(data.subarray(1, 4)),
sampleDescriptions: inspectMp4(data.subarray(8))
};
},
stsz: function(data) {
var
view = new DataView(data.buffer, data.byteOffset, data.byteLength),
result = {
version: data[0],
flags: new Uint8Array(data.subarray(1, 4)),
sampleSize: view.getUint32(4),
entries: []
},
i;
for (i = 12; i < data.byteLength; i += 4) {
result.entries.push(view.getUint32(i));
}
return result;
},
stts: function(data) {
var
view = new DataView(data.buffer, data.byteOffset, data.byteLength),
result = {
version: data[0],
flags: new Uint8Array(data.subarray(1, 4)),
timeToSamples: []
},
entryCount = view.getUint32(4),
i;
for (i = 8; entryCount; i += 8, entryCount--) {
result.timeToSamples.push({
sampleCount: view.getUint32(i),
sampleDelta: view.getUint32(i + 4)
});
}
return result;
},
styp: function(data) {
return parse.ftyp(data);
},
tfdt: function(data) {
var result = {
version: data[0],
flags: new Uint8Array(data.subarray(1, 4)),
baseMediaDecodeTime: data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7]
};
if (result.version === 1) {
result.baseMediaDecodeTime *= Math.pow(2, 32);
result.baseMediaDecodeTime += data[8] << 24 | data[9] << 16 | data[10] << 8 | data[11];
}
return result;
},
tfhd: function(data) {
var
view = new DataView(data.buffer, data.byteOffset, data.byteLength),
result = {
version: data[0],
flags: new Uint8Array(data.subarray(1, 4)),
trackId: view.getUint32(4)
},
baseDataOffsetPresent = result.flags[2] & 0x01,
sampleDescriptionIndexPresent = result.flags[2] & 0x02,
defaultSampleDurationPresent = result.flags[2] & 0x08,
defaultSampleSizePresent = result.flags[2] & 0x10,
defaultSampleFlagsPresent = result.flags[2] & 0x20,
i;
i = 8;
if (baseDataOffsetPresent) {
i += 4; // truncate top 4 bytes
result.baseDataOffset = view.getUint32(12);
i += 4;
}
if (sampleDescriptionIndexPresent) {
result.sampleDescriptionIndex = view.getUint32(i);
i += 4;
}
if (defaultSampleDurationPresent) {
result.defaultSampleDuration = view.getUint32(i);
i += 4;
}
if (defaultSampleSizePresent) {
result.defaultSampleSize = view.getUint32(i);
i += 4;
}
if (defaultSampleFlagsPresent) {
result.defaultSampleFlags = view.getUint32(i);
}
return result;
},
tkhd: function(data) {
var
view = new DataView(data.buffer, data.byteOffset, data.byteLength),
i = 4,
result = {
version: view.getUint8(0),
flags: new Uint8Array(data.subarray(1, 4))
};
if (result.version === 1) {
i += 4;
result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes
i += 8;
result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes
i += 4;
result.trackId = view.getUint32(i);
i += 4;
i += 8;
result.duration = view.getUint32(i); // truncating top 4 bytes
} else {
result.creationTime = parseMp4Date(view.getUint32(i));
i += 4;
result.modificationTime = parseMp4Date(view.getUint32(i));
i += 4;
result.trackId = view.getUint32(i);
i += 4;
i += 4;
result.duration = view.getUint32(i);
}
i += 4;
i += 2 * 4;
result.layer = view.getUint16(i);
i += 2;
result.alternateGroup = view.getUint16(i);
i += 2;
// convert fixed-point, base 16 back to a number
result.volume = view.getUint8(i) + (view.getUint8(i + 1) / 8);
i += 2;
i += 2;
result.matrix = new Uint32Array(data.subarray(i, i + (9 * 4)));
i += 9 * 4;
result.width = view.getUint16(i) + (view.getUint16(i + 2) / 16);
i += 4;
result.height = view.getUint16(i) + (view.getUint16(i + 2) / 16);
return result;
},
traf: function(data) {
return {
boxes: inspectMp4(data)
};
},
trak: function(data) {
return {
boxes: inspectMp4(data)
};
},
trex: function(data) {
var view = new DataView(data.buffer, data.byteOffset, data.byteLength);
return {
version: data[0],
flags: new Uint8Array(data.subarray(1, 4)),
trackId: view.getUint32(4),
defaultSampleDescriptionIndex: view.getUint32(8),
defaultSampleDuration: view.getUint32(12),
defaultSampleSize: view.getUint32(16),
sampleDependsOn: data[20] & 0x03,
sampleIsDependedOn: (data[21] & 0xc0) >> 6,
sampleHasRedundancy: (data[21] & 0x30) >> 4,
samplePaddingValue: (data[21] & 0x0e) >> 1,
sampleIsDifferenceSample: !!(data[21] & 0x01),
sampleDegradationPriority: view.getUint16(22)
};
},
trun: function(data) {
var
result = {
version: data[0],
flags: new Uint8Array(data.subarray(1, 4)),
samples: []
},
view = new DataView(data.buffer, data.byteOffset, data.byteLength),
dataOffsetPresent = result.flags[2] & 0x01,
firstSampleFlagsPresent = result.flags[2] & 0x04,
sampleDurationPresent = result.flags[1] & 0x01,
sampleSizePresent = result.flags[1] & 0x02,
sampleFlagsPresent = result.flags[1] & 0x04,
sampleCompositionTimeOffsetPresent = result.flags[1] & 0x08,
sampleCount = view.getUint32(4),
offset = 8,
sample;
if (dataOffsetPresent) {
result.dataOffset = view.getUint32(offset);
offset += 4;
}
if (firstSampleFlagsPresent && sampleCount) {
sample = {
flags: parseSampleFlags(data.subarray(offset, offset + 4))
};
offset += 4;
if (sampleDurationPresent) {
sample.duration = view.getUint32(offset);
offset += 4;
}
if (sampleSizePresent) {
sample.size = view.getUint32(offset);
offset += 4;
}
if (sampleCompositionTimeOffsetPresent) {
sample.compositionTimeOffset = view.getUint32(offset);
offset += 4;
}
result.samples.push(sample);
sampleCount--;
}
while (sampleCount--) {
sample = {};
if (sampleDurationPresent) {
sample.duration = view.getUint32(offset);
offset += 4;
}
if (sampleSizePresent) {
sample.size = view.getUint32(offset);
offset += 4;
}
if (sampleFlagsPresent) {
sample.flags = parseSampleFlags(data.subarray(offset, offset + 4));
offset += 4;
}
if (sampleCompositionTimeOffsetPresent) {
sample.compositionTimeOffset = view.getUint32(offset);
offset += 4;
}
result.samples.push(sample);
}
return result;
},
'url ': function(data) {
return {
version: data[0],
flags: new Uint8Array(data.subarray(1, 4))
};
},
vmhd: function(data) {
var view = new DataView(data.buffer, data.byteOffset, data.byteLength);
return {
version: data[0],
flags: new Uint8Array(data.subarray(1, 4)),
graphicsmode: view.getUint16(4),
opcolor: new Uint16Array([view.getUint16(6),
view.getUint16(8),
view.getUint16(10)])
};
}
};
/**
* Return a javascript array of box objects parsed from an ISO base
* media file.
* @param data {Uint8Array} the binary data of the media to be inspected
* @return {array} a javascript array of potentially nested box objects
*/
inspectMp4 = function(data) {
var
i = 0,
result = [],
view,
size,
type,
end,
box;
// Convert data from Uint8Array to ArrayBuffer, to follow Dataview API
var ab = new ArrayBuffer(data.length);
var v = new Uint8Array(ab);
for (var z = 0; z < data.length; ++z) {
v[z] = data[z];
}
view = new DataView(ab);
while (i < data.byteLength) {
// parse box data
size = view.getUint32(i);
type = parseType(data.subarray(i + 4, i + 8));
end = size > 1 ? i + size : data.byteLength;
// parse type-specific data
box = (parse[type] || function(data) {
return {
data: data
};
})(data.subarray(i + 8, end));
box.size = size;
box.type = type;
// store this box and move to the next
result.push(box);
i = end;
}
return result;
};
/**
* Returns a textual representation of the javascript represtentation
* of an MP4 file. You can use it as an alternative to
* JSON.stringify() to compare inspected MP4s.
* @param inspectedMp4 {array} the parsed array of boxes in an MP4
* file
* @param depth {number} (optional) the number of ancestor boxes of
* the elements of inspectedMp4. Assumed to be zero if unspecified.
* @return {string} a text representation of the parsed MP4
*/
textifyMp4 = function(inspectedMp4, depth) {
var indent;
depth = depth || 0;
indent = new Array(depth * 2 + 1).join(' ');
// iterate over all the boxes
return inspectedMp4.map(function(box, index) {
// list the box type first at the current indentation level
return indent + box.type + '\n' +
// the type is already included and handle child boxes separately
Object.keys(box).filter(function(key) {
return key !== 'type' && key !== 'boxes';
// output all the box properties
}).map(function(key) {
var prefix = indent + ' ' + key + ': ',
value = box[key];
// print out raw bytes as hexademical
if (value instanceof Uint8Array || value instanceof Uint32Array) {
var bytes = Array.prototype.slice.call(new Uint8Array(value.buffer, value.byteOffset, value.byteLength))
.map(function(byte) {
return ' ' + ('00' + byte.toString(16)).slice(-2);
}).join('').match(/.{1,24}/g);
if (!bytes) {
return prefix + '<>';
}
if (bytes.length === 1) {
return prefix + '<' + bytes.join('').slice(1) + '>';
}
return prefix + '<\n' + bytes.map(function(line) {
return indent + ' ' + line;
}).join('\n') + '\n' + indent + ' >';
}
// stringify generic objects
return prefix +
JSON.stringify(value, null, 2)
.split('\n').map(function(line, index) {
if (index === 0) {
return line;
}
return indent + ' ' + line;
}).join('\n');
}).join('\n') +
// recursively textify the child boxes
(box.boxes ? '\n' + textifyMp4(box.boxes, depth + 1) : '');
}).join('\n');
};
module.exports = {
inspect: inspectMp4,
textify: textifyMp4
};
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../mp4/probe":26}],30:[function(require,module,exports){
/**
* mux.js
*
* Copyright (c) 2016 Brightcove
* All rights reserved.
*
* Parse mpeg2 transport stream packets to extract basic timing information
*/
'use strict';
var StreamTypes = require('../m2ts/stream-types.js');
var handleRollover = require('../m2ts/timestamp-rollover-stream.js').handleRollover;
var probe = {};
probe.ts = require('../m2ts/probe.js');
probe.aac = require('../aac/probe.js');
var
PES_TIMESCALE = 90000,
MP2T_PACKET_LENGTH = 188, // bytes
SYNC_BYTE = 0x47;
var isLikelyAacData = function(data) {
if ((data[0] === 'I'.charCodeAt(0)) &&
(data[1] === 'D'.charCodeAt(0)) &&
(data[2] === '3'.charCodeAt(0))) {
return true;
}
return false;
};
/**
* walks through segment data looking for pat and pmt packets to parse out
* program map table information
*/
var parsePsi_ = function(bytes, pmt) {
var
startIndex = 0,
endIndex = MP2T_PACKET_LENGTH,
packet, type;
while (endIndex < bytes.byteLength) {
// Look for a pair of start and end sync bytes in the data..
if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {
// We found a packet
packet = bytes.subarray(startIndex, endIndex);
type = probe.ts.parseType(packet, pmt.pid);
switch (type) {
case 'pat':
if (!pmt.pid) {
pmt.pid = probe.ts.parsePat(packet);
}
break;
case 'pmt':
if (!pmt.table) {
pmt.table = probe.ts.parsePmt(packet);
}
break;
default:
break;
}
// Found the pat and pmt, we can stop walking the segment
if (pmt.pid && pmt.table) {
return;
}
startIndex += MP2T_PACKET_LENGTH;
endIndex += MP2T_PACKET_LENGTH;
continue;
}
// If we get here, we have somehow become de-synchronized and we need to step
// forward one byte at a time until we find a pair of sync bytes that denote
// a packet
startIndex++;
endIndex++;
}
};
/**
* walks through the segment data from the start and end to get timing information
* for the first and last audio pes packets
*/
var parseAudioPes_ = function(bytes, pmt, result) {
var
startIndex = 0,
endIndex = MP2T_PACKET_LENGTH,
packet, type, pesType, pusi, parsed;
var endLoop = false;
// Start walking from start of segment to get first audio packet
while (endIndex < bytes.byteLength) {
// Look for a pair of start and end sync bytes in the data..
if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {
// We found a packet
packet = bytes.subarray(startIndex, endIndex);
type = probe.ts.parseType(packet, pmt.pid);
switch (type) {
case 'pes':
pesType = probe.ts.parsePesType(packet, pmt.table);
pusi = probe.ts.parsePayloadUnitStartIndicator(packet);
if (pesType === 'audio' && pusi) {
parsed = probe.ts.parsePesTime(packet);
if (parsed) {
parsed.type = 'audio';
result.audio.push(parsed);
endLoop = true;
}
}
break;
default:
break;
}
if (endLoop) {
break;
}
startIndex += MP2T_PACKET_LENGTH;
endIndex += MP2T_PACKET_LENGTH;
continue;
}
// If we get here, we have somehow become de-synchronized and we need to step
// forward one byte at a time until we find a pair of sync bytes that denote
// a packet
startIndex++;
endIndex++;
}
// Start walking from end of segment to get last audio packet
endIndex = bytes.byteLength;
startIndex = endIndex - MP2T_PACKET_LENGTH;
endLoop = false;
while (startIndex >= 0) {
// Look for a pair of start and end sync bytes in the data..
if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {
// We found a packet
packet = bytes.subarray(startIndex, endIndex);
type = probe.ts.parseType(packet, pmt.pid);
switch (type) {
case 'pes':
pesType = probe.ts.parsePesType(packet, pmt.table);
pusi = probe.ts.parsePayloadUnitStartIndicator(packet);
if (pesType === 'audio' && pusi) {
parsed = probe.ts.parsePesTime(packet);
if (parsed) {
parsed.type = 'audio';
result.audio.push(parsed);
endLoop = true;
}
}
break;
default:
break;
}
if (endLoop) {
break;
}
startIndex -= MP2T_PACKET_LENGTH;
endIndex -= MP2T_PACKET_LENGTH;
continue;
}
// If we get here, we have somehow become de-synchronized and we need to step
// forward one byte at a time until we find a pair of sync bytes that denote
// a packet
startIndex--;
endIndex--;
}
};
/**
* walks through the segment data from the start and end to get timing information
* for the first and last video pes packets as well as timing information for the first
* key frame.
*/
var parseVideoPes_ = function(bytes, pmt, result) {
var
startIndex = 0,
endIndex = MP2T_PACKET_LENGTH,
packet, type, pesType, pusi, parsed, frame, i, pes;
var endLoop = false;
var currentFrame = {
data: [],
size: 0
};
// Start walking from start of segment to get first video packet
while (endIndex < bytes.byteLength) {
// Look for a pair of start and end sync bytes in the data..
if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {
// We found a packet
packet = bytes.subarray(startIndex, endIndex);
type = probe.ts.parseType(packet, pmt.pid);
switch (type) {
case 'pes':
pesType = probe.ts.parsePesType(packet, pmt.table);
pusi = probe.ts.parsePayloadUnitStartIndicator(packet);
if (pesType === 'video') {
if (pusi && !endLoop) {
parsed = probe.ts.parsePesTime(packet);
if (parsed) {
parsed.type = 'video';
result.video.push(parsed);
endLoop = true;
}
}
if (!result.firstKeyFrame) {
if (pusi) {
if (currentFrame.size !== 0) {
frame = new Uint8Array(currentFrame.size);
i = 0;
while (currentFrame.data.length) {
pes = currentFrame.data.shift();
frame.set(pes, i);
i += pes.byteLength;
}
if (probe.ts.videoPacketContainsKeyFrame(frame)) {
result.firstKeyFrame = probe.ts.parsePesTime(frame);
result.firstKeyFrame.type = 'video';
}
currentFrame.size = 0;
}
}
currentFrame.data.push(packet);
currentFrame.size += packet.byteLength;
}
}
break;
default:
break;
}
if (endLoop && result.firstKeyFrame) {
break;
}
startIndex += MP2T_PACKET_LENGTH;
endIndex += MP2T_PACKET_LENGTH;
continue;
}
// If we get here, we have somehow become de-synchronized and we need to step
// forward one byte at a time until we find a pair of sync bytes that denote
// a packet
startIndex++;
endIndex++;
}
// Start walking from end of segment to get last video packet
endIndex = bytes.byteLength;
startIndex = endIndex - MP2T_PACKET_LENGTH;
endLoop = false;
while (startIndex >= 0) {
// Look for a pair of start and end sync bytes in the data..
if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {
// We found a packet
packet = bytes.subarray(startIndex, endIndex);
type = probe.ts.parseType(packet, pmt.pid);
switch (type) {
case 'pes':
pesType = probe.ts.parsePesType(packet, pmt.table);
pusi = probe.ts.parsePayloadUnitStartIndicator(packet);
if (pesType === 'video' && pusi) {
parsed = probe.ts.parsePesTime(packet);
if (parsed) {
parsed.type = 'video';
result.video.push(parsed);
endLoop = true;
}
}
break;
default:
break;
}
if (endLoop) {
break;
}
startIndex -= MP2T_PACKET_LENGTH;
endIndex -= MP2T_PACKET_LENGTH;
continue;
}
// If we get here, we have somehow become de-synchronized and we need to step
// forward one byte at a time until we find a pair of sync bytes that denote
// a packet
startIndex--;
endIndex--;
}
};
/**
* Adjusts the timestamp information for the segment to account for
* rollover and convert to seconds based on pes packet timescale (90khz clock)
*/
var adjustTimestamp_ = function(segmentInfo, baseTimestamp) {
if (segmentInfo.audio && segmentInfo.audio.length) {
var audioBaseTimestamp = baseTimestamp;
if (typeof audioBaseTimestamp === 'undefined') {
audioBaseTimestamp = segmentInfo.audio[0].dts;
}
segmentInfo.audio.forEach(function(info) {
info.dts = handleRollover(info.dts, audioBaseTimestamp);
info.pts = handleRollover(info.pts, audioBaseTimestamp);
// time in seconds
info.dtsTime = info.dts / PES_TIMESCALE;
info.ptsTime = info.pts / PES_TIMESCALE;
});
}
if (segmentInfo.video && segmentInfo.video.length) {
var videoBaseTimestamp = baseTimestamp;
if (typeof videoBaseTimestamp === 'undefined') {
videoBaseTimestamp = segmentInfo.video[0].dts;
}
segmentInfo.video.forEach(function(info) {
info.dts = handleRollover(info.dts, videoBaseTimestamp);
info.pts = handleRollover(info.pts, videoBaseTimestamp);
// time in seconds
info.dtsTime = info.dts / PES_TIMESCALE;
info.ptsTime = info.pts / PES_TIMESCALE;
});
if (segmentInfo.firstKeyFrame) {
var frame = segmentInfo.firstKeyFrame;
frame.dts = handleRollover(frame.dts, videoBaseTimestamp);
frame.pts = handleRollover(frame.pts, videoBaseTimestamp);
// time in seconds
frame.dtsTime = frame.dts / PES_TIMESCALE;
frame.ptsTime = frame.dts / PES_TIMESCALE;
}
}
};
/**
* inspects the aac data stream for start and end time information
*/
var inspectAac_ = function(bytes) {
var
endLoop = false,
audioCount = 0,
sampleRate = null,
timestamp = null,
frameSize = 0,
byteIndex = 0,
packet;
while (bytes.length - byteIndex >= 3) {
var type = probe.aac.parseType(bytes, byteIndex);
switch (type) {
case 'timed-metadata':
// Exit early because we don't have enough to parse
// the ID3 tag header
if (bytes.length - byteIndex < 10) {
endLoop = true;
break;
}
frameSize = probe.aac.parseId3TagSize(bytes, byteIndex);
// Exit early if we don't have enough in the buffer
// to emit a full packet
if (frameSize > bytes.length) {
endLoop = true;
break;
}
if (timestamp === null) {
packet = bytes.subarray(byteIndex, byteIndex + frameSize);
timestamp = probe.aac.parseAacTimestamp(packet);
}
byteIndex += frameSize;
break;
case 'audio':
// Exit early because we don't have enough to parse
// the ADTS frame header
if (bytes.length - byteIndex < 7) {
endLoop = true;
break;
}
frameSize = probe.aac.parseAdtsSize(bytes, byteIndex);
// Exit early if we don't have enough in the buffer
// to emit a full packet
if (frameSize > bytes.length) {
endLoop = true;
break;
}
if (sampleRate === null) {
packet = bytes.subarray(byteIndex, byteIndex + frameSize);
sampleRate = probe.aac.parseSampleRate(packet);
}
audioCount++;
byteIndex += frameSize;
break;
default:
byteIndex++;
break;
}
if (endLoop) {
return null;
}
}
if (sampleRate === null || timestamp === null) {
return null;
}
var audioTimescale = PES_TIMESCALE / sampleRate;
var result = {
audio: [
{
type: 'audio',
dts: timestamp,
pts: timestamp
},
{
type: 'audio',
dts: timestamp + (audioCount * 1024 * audioTimescale),
pts: timestamp + (audioCount * 1024 * audioTimescale)
}
]
};
return result;
};
/**
* inspects the transport stream segment data for start and end time information
* of the audio and video tracks (when present) as well as the first key frame's
* start time.
*/
var inspectTs_ = function(bytes) {
var pmt = {
pid: null,
table: null
};
var result = {};
parsePsi_(bytes, pmt);
for (var pid in pmt.table) {
if (pmt.table.hasOwnProperty(pid)) {
var type = pmt.table[pid];
switch (type) {
case StreamTypes.H264_STREAM_TYPE:
result.video = [];
parseVideoPes_(bytes, pmt, result);
if (result.video.length === 0) {
delete result.video;
}
break;
case StreamTypes.ADTS_STREAM_TYPE:
result.audio = [];
parseAudioPes_(bytes, pmt, result);
if (result.audio.length === 0) {
delete result.audio;
}
break;
default:
break;
}
}
}
return result;
};
/**
* Inspects segment byte data and returns an object with start and end timing information
*
* @param {Uint8Array} bytes The segment byte data
* @param {Number} baseTimestamp Relative reference timestamp used when adjusting frame
* timestamps for rollover. This value must be in 90khz clock.
* @return {Object} Object containing start and end frame timing info of segment.
*/
var inspect = function(bytes, baseTimestamp) {
var isAacData = isLikelyAacData(bytes);
var result;
if (isAacData) {
result = inspectAac_(bytes);
} else {
result = inspectTs_(bytes);
}
if (!result || (!result.audio && !result.video)) {
return null;
}
adjustTimestamp_(result, baseTimestamp);
return result;
};
module.exports = {
inspect: inspect
};
},{"../aac/probe.js":5,"../m2ts/probe.js":21,"../m2ts/stream-types.js":22,"../m2ts/timestamp-rollover-stream.js":23}],31:[function(require,module,exports){
var
ONE_SECOND_IN_TS = 90000, // 90kHz clock
secondsToVideoTs,
secondsToAudioTs,
videoTsToSeconds,
audioTsToSeconds,
audioTsToVideoTs,
videoTsToAudioTs;
secondsToVideoTs = function(seconds) {
return seconds * ONE_SECOND_IN_TS;
};
secondsToAudioTs = function(seconds, sampleRate) {
return seconds * sampleRate;
};
videoTsToSeconds = function(timestamp) {
return timestamp / ONE_SECOND_IN_TS;
};
audioTsToSeconds = function(timestamp, sampleRate) {
return timestamp / sampleRate;
};
audioTsToVideoTs = function(timestamp, sampleRate) {
return secondsToVideoTs(audioTsToSeconds(timestamp, sampleRate));
};
videoTsToAudioTs = function(timestamp, sampleRate) {
return secondsToAudioTs(videoTsToSeconds(timestamp), sampleRate);
};
module.exports = {
secondsToVideoTs: secondsToVideoTs,
secondsToAudioTs: secondsToAudioTs,
videoTsToSeconds: videoTsToSeconds,
audioTsToSeconds: audioTsToSeconds,
audioTsToVideoTs: audioTsToVideoTs,
videoTsToAudioTs: videoTsToAudioTs
};
},{}],32:[function(require,module,exports){
'use strict';
var ExpGolomb;
/**
* Parser for exponential Golomb codes, a variable-bitwidth number encoding
* scheme used by h264.
*/
ExpGolomb = function(workingData) {
var
// the number of bytes left to examine in workingData
workingBytesAvailable = workingData.byteLength,
// the current word being examined
workingWord = 0, // :uint
// the number of bits left to examine in the current word
workingBitsAvailable = 0; // :uint;
// ():uint
this.length = function() {
return (8 * workingBytesAvailable);
};
// ():uint
this.bitsAvailable = function() {
return (8 * workingBytesAvailable) + workingBitsAvailable;
};
// ():void
this.loadWord = function() {
var
position = workingData.byteLength - workingBytesAvailable,
workingBytes = new Uint8Array(4),
availableBytes = Math.min(4, workingBytesAvailable);
if (availableBytes === 0) {
throw new Error('no bytes available');
}
workingBytes.set(workingData.subarray(position,
position + availableBytes));
workingWord = new DataView(workingBytes.buffer).getUint32(0);
// track the amount of workingData that has been processed
workingBitsAvailable = availableBytes * 8;
workingBytesAvailable -= availableBytes;
};
// (count:int):void
this.skipBits = function(count) {
var skipBytes; // :int
if (workingBitsAvailable > count) {
workingWord <<= count;
workingBitsAvailable -= count;
} else {
count -= workingBitsAvailable;
skipBytes = Math.floor(count / 8);
count -= (skipBytes * 8);
workingBytesAvailable -= skipBytes;
this.loadWord();
workingWord <<= count;
workingBitsAvailable -= count;
}
};
// (size:int):uint
this.readBits = function(size) {
var
bits = Math.min(workingBitsAvailable, size), // :uint
valu = workingWord >>> (32 - bits); // :uint
// if size > 31, handle error
workingBitsAvailable -= bits;
if (workingBitsAvailable > 0) {
workingWord <<= bits;
} else if (workingBytesAvailable > 0) {
this.loadWord();
}
bits = size - bits;
if (bits > 0) {
return valu << bits | this.readBits(bits);
}
return valu;
};
// ():uint
this.skipLeadingZeros = function() {
var leadingZeroCount; // :uint
for (leadingZeroCount = 0; leadingZeroCount < workingBitsAvailable; ++leadingZeroCount) {
if ((workingWord & (0x80000000 >>> leadingZeroCount)) !== 0) {
// the first bit of working word is 1
workingWord <<= leadingZeroCount;
workingBitsAvailable -= leadingZeroCount;
return leadingZeroCount;
}
}
// we exhausted workingWord and still have not found a 1
this.loadWord();
return leadingZeroCount + this.skipLeadingZeros();
};
// ():void
this.skipUnsignedExpGolomb = function() {
this.skipBits(1 + this.skipLeadingZeros());
};
// ():void
this.skipExpGolomb = function() {
this.skipBits(1 + this.skipLeadingZeros());
};
// ():uint
this.readUnsignedExpGolomb = function() {
var clz = this.skipLeadingZeros(); // :uint
return this.readBits(clz + 1) - 1;
};
// ():int
this.readExpGolomb = function() {
var valu = this.readUnsignedExpGolomb(); // :int
if (0x01 & valu) {
// the number is odd if the low order bit is set
return (1 + valu) >>> 1; // add 1 to make it even, and divide by 2
}
return -1 * (valu >>> 1); // divide by two then make it negative
};
// Some convenience functions
// :Boolean
this.readBoolean = function() {
return this.readBits(1) === 1;
};
// ():int
this.readUnsignedByte = function() {
return this.readBits(8);
};
this.loadWord();
};
module.exports = ExpGolomb;
},{}],33:[function(require,module,exports){
/**
* mux.js
*
* Copyright (c) 2014 Brightcove
* All rights reserved.
*
* A lightweight readable stream implemention that handles event dispatching.
* Objects that inherit from streams should call init in their constructors.
*/
'use strict';
var Stream = function() {
this.init = function() {
var listeners = {};
/**
* Add a listener for a specified event type.
* @param type {string} the event name
* @param listener {function} the callback to be invoked when an event of
* the specified type occurs
*/
this.on = function(type, listener) {
if (!listeners[type]) {
listeners[type] = [];
}
listeners[type] = listeners[type].concat(listener);
};
/**
* Remove a listener for a specified event type.
* @param type {string} the event name
* @param listener {function} a function previously registered for this
* type of event through `on`
*/
this.off = function(type, listener) {
var index;
if (!listeners[type]) {
return false;
}
index = listeners[type].indexOf(listener);
listeners[type] = listeners[type].slice();
listeners[type].splice(index, 1);
return index > -1;
};
/**
* Trigger an event of the specified type on this stream. Any additional
* arguments to this function are passed as parameters to event listeners.
* @param type {string} the event name
*/
this.trigger = function(type) {
var callbacks, i, length, args;
callbacks = listeners[type];
if (!callbacks) {
return;
}
// Slicing the arguments on every invocation of this method
// can add a significant amount of overhead. Avoid the
// intermediate object creation for the common case of a
// single callback argument
if (arguments.length === 2) {
length = callbacks.length;
for (i = 0; i < length; ++i) {
callbacks[i].call(this, arguments[1]);
}
} else {
args = [];
i = arguments.length;
for (i = 1; i < arguments.length; ++i) {
args.push(arguments[i]);
}
length = callbacks.length;
for (i = 0; i < length; ++i) {
callbacks[i].apply(this, args);
}
}
};
/**
* Destroys the stream and cleans up.
*/
this.dispose = function() {
listeners = {};
};
};
};
/**
* Forwards all `data` events on this stream to the destination stream. The
* destination stream should provide a method `push` to receive the data
* events as they arrive.
* @param destination {stream} the stream that will receive all `data` events
* @param autoFlush {boolean} if false, we will not call `flush` on the destination
* when the current stream emits a 'done' event
* @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options
*/
Stream.prototype.pipe = function(destination) {
this.on('data', function(data) {
destination.push(data);
});
this.on('done', function(flushSource) {
destination.flush(flushSource);
});
return destination;
};
// Default stream functions that are expected to be overridden to perform
// actual work. These are provided by the prototype as a sort of no-op
// implementation so that we don't have to check for their existence in the
// `pipe` function above.
Stream.prototype.push = function(data) {
this.trigger('data', data);
};
Stream.prototype.flush = function(flushSource) {
this.trigger('done', flushSource);
};
module.exports = Stream;
},{}],34:[function(require,module,exports){
// By default assume browserify was used to bundle app. These arguments are passed to
// the module by browserify.
var bundleFn = arguments[3];
var sources = arguments[4];
var cache = arguments[5];
var stringify = JSON.stringify;
var webpack = false;
// webpackBootstrap
var webpackBootstrapFn = function(modules) {
// The module cache
var installedModules = {};
// The require function
function __webpack_require__(moduleId) {
// Check if module is in cache
if(installedModules[moduleId]) {
return installedModules[moduleId].exports;
}
// Create a new module (and put it into the cache)
var module = installedModules[moduleId] = {
i: moduleId,
l: false,
exports: {}
};
// Execute the module function
modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
// Flag the module as loaded
module.l = true;
// Return the exports of the module
return module.exports;
}
// expose the modules object (__webpack_modules__)
__webpack_require__.m = modules;
// expose the module cache
__webpack_require__.c = installedModules;
// define getter function for harmony exports
__webpack_require__.d = function(exports, name, getter) {
if(!__webpack_require__.o(exports, name)) {
Object.defineProperty(exports, name, {
configurable: false,
enumerable: true,
get: getter
});
}
};
// getDefaultExport function for compatibility with non-harmony modules
__webpack_require__.n = function(module) {
var getter = module && module.__esModule ?
function getDefault() { return module['default']; } :
function getModuleExports() { return module; };
__webpack_require__.d(getter, 'a', getter);
return getter;
};
// Object.prototype.hasOwnProperty.call
__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
// __webpack_public_path__
__webpack_require__.p = "";
// Load entry module and return exports
return __webpack_require__(__webpack_require__.s = entryModule);
}
if (typeof bundleFn === 'undefined') {
// Assume this was bundled with webpack and not browserify
webpack = true;
bundleFn = webpackBootstrapFn;
sources = __webpack_modules__;
}
var bundleWithBrowserify = function(fn) {
// with browserify we must find the module key ourselves
var cacheKeys = Object.keys(cache);
var fnModuleKey;
for (var i = 0; i < cacheKeys.length; i++) {
var cacheKey = cacheKeys[i];
var cacheExports = cache[cacheKey].exports;
// Using babel as a transpiler to use esmodule, the export will always
// be an object with the default export as a property of it. To ensure
// the existing api and babel esmodule exports are both supported we
// check for both
if (cacheExports === fn || cacheExports && cacheExports.default === fn) {
fnModuleKey = cacheKey;
break;
}
}
// if we couldn't find one, lets make one
if (!fnModuleKey) {
fnModuleKey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
var fnModuleCache = {};
for (var i = 0; i < cacheKeys.length; i++) {
var cacheKey = cacheKeys[i];
fnModuleCache[cacheKey] = cacheKey;
}
sources[fnModuleKey] = [
'function(require,module,exports){' + fn + '(self); }',
fnModuleCache
];
}
var entryKey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
var entryCache = {};
entryCache[fnModuleKey] = fnModuleKey;
sources[entryKey] = [
'function(require,module,exports){' +
// try to call default if defined to also support babel esmodule exports
'var f = require(' + stringify(fnModuleKey) + ');' +
'(f.default ? f.default : f)(self);' +
'}',
entryCache
];
return '(' + bundleFn + ')({'
+ Object.keys(sources).map(function(key) {
return stringify(key) + ':['
+ sources[key][0] + ','
+ stringify(sources[key][1]) + ']';
}).join(',')
+ '},{},[' + stringify(entryKey) + '])';
};
var bundleWithWebpack = function(fn, fnModuleId) {
var devMode = typeof fnModuleId === 'string';
var sourceStrings;
if (devMode) {
sourceStrings = {};
} else {
sourceStrings = [];
}
Object.keys(sources).forEach(function(sKey) {
if (!sources[sKey]) {
return;
}
sourceStrings[sKey] = sources[sKey].toString();
});
var fnModuleExports = __webpack_require__(fnModuleId);
// Using babel as a transpiler to use esmodule, the export will always
// be an object with the default export as a property of it. To ensure
// the existing api and babel esmodule exports are both supported we
// check for both
if (!(fnModuleExports && (fnModuleExports === fn || fnModuleExports.default === fn))) {
var fnSourceString = sourceStrings[fnModuleId];
sourceStrings[fnModuleId] = fnSourceString.substring(0, fnSourceString.length - 1) +
'\n' + fn.name + '();\n}';
}
var modulesString;
if (devMode) {
// must escape quotes to support webpack loader options
fnModuleId = stringify(fnModuleId);
// dev mode in webpack4, modules are passed as an object
var mappedSourceStrings = Object.keys(sourceStrings).map(function(sKey) {
return stringify(sKey) + ':' + sourceStrings[sKey];
});
modulesString = '{' + mappedSourceStrings.join(',') + '}';
} else {
modulesString = '[' + sourceStrings.join(',') + ']';
}
return 'var fn = (' + bundleFn.toString().replace('entryModule', fnModuleId) + ')('
+ modulesString
+ ');\n'
// not a function when calling a function from the current scope
+ '(typeof fn === "function") && fn(self);';
};
module.exports = function webwackify(fn, fnModuleId) {
var src;
if (webpack) {
src = bundleWithWebpack(fn, fnModuleId);
} else {
src = bundleWithBrowserify(fn);
}
var blob = new Blob([src], { type: 'text/javascript' });
var URL = window.URL || window.webkitURL || window.mozURL || window.msURL;
var workerUrl = URL.createObjectURL(blob);
var worker = new Worker(workerUrl);
worker.objectURL = workerUrl;
return worker;
};
},{}],35:[function(require,module,exports){
(function (global){
/**
* @file add-text-track-data.js
*/
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
var _globalWindow = require('global/window');
var _globalWindow2 = _interopRequireDefault(_globalWindow);
var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
var _videoJs2 = _interopRequireDefault(_videoJs);
/**
* Define properties on a cue for backwards compatability,
* but warn the user that the way that they are using it
* is depricated and will be removed at a later date.
*
* @param {Cue} cue the cue to add the properties on
* @private
*/
var deprecateOldCue = function deprecateOldCue(cue) {
Object.defineProperties(cue.frame, {
id: {
get: function get() {
_videoJs2['default'].log.warn('cue.frame.id is deprecated. Use cue.value.key instead.');
return cue.value.key;
}
},
value: {
get: function get() {
_videoJs2['default'].log.warn('cue.frame.value is deprecated. Use cue.value.data instead.');
return cue.value.data;
}
},
privateData: {
get: function get() {
_videoJs2['default'].log.warn('cue.frame.privateData is deprecated. Use cue.value.data instead.');
return cue.value.data;
}
}
});
};
var durationOfVideo = function durationOfVideo(duration) {
var dur = undefined;
if (isNaN(duration) || Math.abs(duration) === Infinity) {
dur = Number.MAX_VALUE;
} else {
dur = duration;
}
return dur;
};
/**
* Add text track data to a source handler given the captions and
* metadata from the buffer.
*
* @param {Object} sourceHandler the flash or virtual source buffer
* @param {Array} captionArray an array of caption data
* @param {Array} metadataArray an array of meta data
* @private
*/
var addTextTrackData = function addTextTrackData(sourceHandler, captionArray, metadataArray) {
var Cue = _globalWindow2['default'].WebKitDataCue || _globalWindow2['default'].VTTCue;
if (captionArray) {
captionArray.forEach(function (caption) {
var track = caption.stream;
this.inbandTextTracks_[track].addCue(new Cue(caption.startTime + this.timestampOffset, caption.endTime + this.timestampOffset, caption.text));
}, sourceHandler);
}
if (metadataArray) {
(function () {
var videoDuration = durationOfVideo(sourceHandler.mediaSource_.duration);
metadataArray.forEach(function (metadata) {
var time = metadata.cueTime + this.timestampOffset;
metadata.frames.forEach(function (frame) {
var cue = new Cue(time, time, frame.value || frame.url || frame.data || '');
cue.frame = frame;
cue.value = frame;
deprecateOldCue(cue);
this.metadataTrack_.addCue(cue);
}, this);
}, sourceHandler);
// Updating the metadeta cues so that
// the endTime of each cue is the startTime of the next cue
// the endTime of last cue is the duration of the video
if (sourceHandler.metadataTrack_ && sourceHandler.metadataTrack_.cues && sourceHandler.metadataTrack_.cues.length) {
(function () {
var cues = sourceHandler.metadataTrack_.cues;
var cuesArray = [];
// Create a copy of the TextTrackCueList...
// ...disregarding cues with a falsey value
for (var i = 0; i < cues.length; i++) {
if (cues[i]) {
cuesArray.push(cues[i]);
}
}
// Group cues by their startTime value
var cuesGroupedByStartTime = cuesArray.reduce(function (obj, cue) {
var timeSlot = obj[cue.startTime] || [];
timeSlot.push(cue);
obj[cue.startTime] = timeSlot;
return obj;
}, {});
// Sort startTimes by ascending order
var sortedStartTimes = Object.keys(cuesGroupedByStartTime).sort(function (a, b) {
return Number(a) - Number(b);
});
// Map each cue group's endTime to the next group's startTime
sortedStartTimes.forEach(function (startTime, idx) {
var cueGroup = cuesGroupedByStartTime[startTime];
var nextTime = Number(sortedStartTimes[idx + 1]) || videoDuration;
// Map each cue's endTime the next group's startTime
cueGroup.forEach(function (cue) {
cue.endTime = nextTime;
});
});
})();
}
})();
}
};
exports['default'] = {
addTextTrackData: addTextTrackData,
durationOfVideo: durationOfVideo
};
module.exports = exports['default'];
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"global/window":3}],36:[function(require,module,exports){
/**
* @file codec-utils.js
*/
/**
* Check if a codec string refers to an audio codec.
*
* @param {String} codec codec string to check
* @return {Boolean} if this is an audio codec
* @private
*/
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
var isAudioCodec = function isAudioCodec(codec) {
return (/mp4a\.\d+.\d+/i.test(codec)
);
};
/**
* Check if a codec string refers to a video codec.
*
* @param {String} codec codec string to check
* @return {Boolean} if this is a video codec
* @private
*/
var isVideoCodec = function isVideoCodec(codec) {
return (/avc1\.[\da-f]+/i.test(codec)
);
};
/**
* Parse a content type header into a type and parameters
* object
*
* @param {String} type the content type header
* @return {Object} the parsed content-type
* @private
*/
var parseContentType = function parseContentType(type) {
var object = { type: '', parameters: {} };
var parameters = type.trim().split(';');
// first parameter should always be content-type
object.type = parameters.shift().trim();
parameters.forEach(function (parameter) {
var pair = parameter.trim().split('=');
if (pair.length > 1) {
var _name = pair[0].replace(/"/g, '').trim();
var value = pair[1].replace(/"/g, '').trim();
object.parameters[_name] = value;
}
});
return object;
};
/**
* Replace the old apple-style `avc1.<dd>.<dd>` codec string with the standard
* `avc1.<hhhhhh>`
*
* @param {Array} codecs an array of codec strings to fix
* @return {Array} the translated codec array
* @private
*/
var translateLegacyCodecs = function translateLegacyCodecs(codecs) {
return codecs.map(function (codec) {
return codec.replace(/avc1\.(\d+)\.(\d+)/i, function (orig, profile, avcLevel) {
var profileHex = ('00' + Number(profile).toString(16)).slice(-2);
var avcLevelHex = ('00' + Number(avcLevel).toString(16)).slice(-2);
return 'avc1.' + profileHex + '00' + avcLevelHex;
});
});
};
exports['default'] = {
isAudioCodec: isAudioCodec,
parseContentType: parseContentType,
isVideoCodec: isVideoCodec,
translateLegacyCodecs: translateLegacyCodecs
};
module.exports = exports['default'];
},{}],37:[function(require,module,exports){
/**
* @file create-text-tracks-if-necessary.js
*/
/**
* Create text tracks on video.js if they exist on a segment.
*
* @param {Object} sourceBuffer the VSB or FSB
* @param {Object} mediaSource the HTML or Flash media source
* @param {Object} segment the segment that may contain the text track
* @private
*/
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
var createTextTracksIfNecessary = function createTextTracksIfNecessary(sourceBuffer, mediaSource, segment) {
var player = mediaSource.player_;
// create an in-band caption track if one is present in the segment
if (segment.captions && segment.captions.length) {
if (!sourceBuffer.inbandTextTracks_) {
sourceBuffer.inbandTextTracks_ = {};
}
for (var trackId in segment.captionStreams) {
if (!sourceBuffer.inbandTextTracks_[trackId]) {
player.tech_.trigger({ type: 'usage', name: 'hls-608' });
var track = player.textTracks().getTrackById(trackId);
if (track) {
// Resuse an existing track with a CC# id because this was
// very likely created by videojs-contrib-hls from information
// in the m3u8 for us to use
sourceBuffer.inbandTextTracks_[trackId] = track;
} else {
// Otherwise, create a track with the default `CC#` label and
// without a language
sourceBuffer.inbandTextTracks_[trackId] = player.addRemoteTextTrack({
kind: 'captions',
id: trackId,
label: trackId
}, false).track;
}
}
}
}
if (segment.metadata && segment.metadata.length && !sourceBuffer.metadataTrack_) {
sourceBuffer.metadataTrack_ = player.addRemoteTextTrack({
kind: 'metadata',
label: 'Timed Metadata'
}, false).track;
sourceBuffer.metadataTrack_.inBandMetadataTrackDispatchType = segment.metadata.dispatchType;
}
};
exports['default'] = createTextTracksIfNecessary;
module.exports = exports['default'];
},{}],38:[function(require,module,exports){
/**
* @file flash-constants.js
*/
/**
* The maximum size in bytes for append operations to the video.js
* SWF. Calling through to Flash blocks and can be expensive so
* we chunk data and pass through 4KB at a time, yielding to the
* browser between chunks. This gives a theoretical maximum rate of
* 1MB/s into Flash. Any higher and we begin to drop frames and UI
* responsiveness suffers.
*
* @private
*/
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var flashConstants = {
// times in milliseconds
TIME_BETWEEN_CHUNKS: 1,
BYTES_PER_CHUNK: 1024 * 32
};
exports["default"] = flashConstants;
module.exports = exports["default"];
},{}],39:[function(require,module,exports){
(function (global){
/**
* @file flash-media-source.js
*/
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
var _globalDocument = require('global/document');
var _globalDocument2 = _interopRequireDefault(_globalDocument);
var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
var _videoJs2 = _interopRequireDefault(_videoJs);
var _flashSourceBuffer = require('./flash-source-buffer');
var _flashSourceBuffer2 = _interopRequireDefault(_flashSourceBuffer);
var _flashConstants = require('./flash-constants');
var _flashConstants2 = _interopRequireDefault(_flashConstants);
var _codecUtils = require('./codec-utils');
/**
* A flash implmentation of HTML MediaSources and a polyfill
* for browsers that don't support native or HTML MediaSources..
*
* @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource
* @class FlashMediaSource
* @extends videojs.EventTarget
*/
var FlashMediaSource = (function (_videojs$EventTarget) {
_inherits(FlashMediaSource, _videojs$EventTarget);
function FlashMediaSource() {
var _this = this;
_classCallCheck(this, FlashMediaSource);
_get(Object.getPrototypeOf(FlashMediaSource.prototype), 'constructor', this).call(this);
this.sourceBuffers = [];
this.readyState = 'closed';
this.on(['sourceopen', 'webkitsourceopen'], function (event) {
// find the swf where we will push media data
_this.swfObj = _globalDocument2['default'].getElementById(event.swfId);
_this.player_ = (0, _videoJs2['default'])(_this.swfObj.parentNode);
_this.tech_ = _this.swfObj.tech;
_this.readyState = 'open';
_this.tech_.on('seeking', function () {
var i = _this.sourceBuffers.length;
while (i--) {
_this.sourceBuffers[i].abort();
}
});
// trigger load events
if (_this.swfObj) {
_this.swfObj.vjs_load();
}
});
}
/**
* Set or return the presentation duration.
*
* @param {Double} value the duration of the media in seconds
* @param {Double} the current presentation duration
* @link http://www.w3.org/TR/media-source/#widl-MediaSource-duration
*/
/**
* We have this function so that the html and flash interfaces
* are the same.
*
* @private
*/
_createClass(FlashMediaSource, [{
key: 'addSeekableRange_',
value: function addSeekableRange_() {}
// intentional no-op
/**
* Create a new flash source buffer and add it to our flash media source.
*
* @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/addSourceBuffer
* @param {String} type the content-type of the source
* @return {Object} the flash source buffer
*/
}, {
key: 'addSourceBuffer',
value: function addSourceBuffer(type) {
var parsedType = (0, _codecUtils.parseContentType)(type);
var sourceBuffer = undefined;
// if this is an FLV type, we'll push data to flash
if (parsedType.type === 'video/mp2t' || parsedType.type === 'audio/mp2t') {
// Flash source buffers
sourceBuffer = new _flashSourceBuffer2['default'](this);
} else {
throw new Error('NotSupportedError (Video.js)');
}
this.sourceBuffers.push(sourceBuffer);
return sourceBuffer;
}
/**
* Signals the end of the stream.
*
* @link https://w3c.github.io/media-source/#widl-MediaSource-endOfStream-void-EndOfStreamError-error
* @param {String=} error Signals that a playback error
* has occurred. If specified, it must be either "network" or
* "decode".
*/
}, {
key: 'endOfStream',
value: function endOfStream(error) {
if (error === 'network') {
// MEDIA_ERR_NETWORK
this.tech_.error(2);
} else if (error === 'decode') {
// MEDIA_ERR_DECODE
this.tech_.error(3);
}
if (this.readyState !== 'ended') {
this.readyState = 'ended';
this.swfObj.vjs_endOfStream();
}
}
}]);
return FlashMediaSource;
})(_videoJs2['default'].EventTarget);
exports['default'] = FlashMediaSource;
try {
Object.defineProperty(FlashMediaSource.prototype, 'duration', {
/**
* Return the presentation duration.
*
* @return {Double} the duration of the media in seconds
* @link http://www.w3.org/TR/media-source/#widl-MediaSource-duration
*/
get: function get() {
if (!this.swfObj) {
return NaN;
}
// get the current duration from the SWF
return this.swfObj.vjs_getProperty('duration');
},
/**
* Set the presentation duration.
*
* @param {Double} value the duration of the media in seconds
* @return {Double} the duration of the media in seconds
* @link http://www.w3.org/TR/media-source/#widl-MediaSource-duration
*/
set: function set(value) {
var i = undefined;
var oldDuration = this.swfObj.vjs_getProperty('duration');
this.swfObj.vjs_setProperty('duration', value);
if (value < oldDuration) {
// In MSE, this triggers the range removal algorithm which causes
// an update to occur
for (i = 0; i < this.sourceBuffers.length; i++) {
this.sourceBuffers[i].remove(value, oldDuration);
}
}
return value;
}
});
} catch (e) {
// IE8 throws if defineProperty is called on a non-DOM node. We
// don't support IE8 but we shouldn't throw an error if loaded
// there.
FlashMediaSource.prototype.duration = NaN;
}
for (var property in _flashConstants2['default']) {
FlashMediaSource[property] = _flashConstants2['default'][property];
}
module.exports = exports['default'];
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./codec-utils":36,"./flash-constants":38,"./flash-source-buffer":40,"global/document":2}],40:[function(require,module,exports){
(function (global){
/**
* @file flash-source-buffer.js
*/
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
var _globalWindow = require('global/window');
var _globalWindow2 = _interopRequireDefault(_globalWindow);
var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
var _videoJs2 = _interopRequireDefault(_videoJs);
var _muxJsLibFlv = require('mux.js/lib/flv');
var _muxJsLibFlv2 = _interopRequireDefault(_muxJsLibFlv);
var _removeCuesFromTrack = require('./remove-cues-from-track');
var _removeCuesFromTrack2 = _interopRequireDefault(_removeCuesFromTrack);
var _createTextTracksIfNecessary = require('./create-text-tracks-if-necessary');
var _createTextTracksIfNecessary2 = _interopRequireDefault(_createTextTracksIfNecessary);
var _addTextTrackData = require('./add-text-track-data');
var _flashTransmuxerWorker = require('./flash-transmuxer-worker');
var _flashTransmuxerWorker2 = _interopRequireDefault(_flashTransmuxerWorker);
var _webwackify = require('webwackify');
var _webwackify2 = _interopRequireDefault(_webwackify);
var _flashConstants = require('./flash-constants');
var _flashConstants2 = _interopRequireDefault(_flashConstants);
var resolveFlashTransmuxWorker = function resolveFlashTransmuxWorker() {
var result = undefined;
try {
result = require.resolve('./flash-transmuxer-worker');
} catch (e) {
// no result
}
return result;
};
/**
* A wrapper around the setTimeout function that uses
* the flash constant time between ticks value.
*
* @param {Function} func the function callback to run
* @private
*/
var scheduleTick = function scheduleTick(func) {
// Chrome doesn't invoke requestAnimationFrame callbacks
// in background tabs, so use setTimeout.
_globalWindow2['default'].setTimeout(func, _flashConstants2['default'].TIME_BETWEEN_CHUNKS);
};
/**
* Generates a random string of max length 6
*
* @return {String} the randomly generated string
* @function generateRandomString
* @private
*/
var generateRandomString = function generateRandomString() {
return Math.random().toString(36).slice(2, 8);
};
/**
* Round a number to a specified number of places much like
* toFixed but return a number instead of a string representation.
*
* @param {Number} num A number
* @param {Number} places The number of decimal places which to
* round
* @private
*/
var toDecimalPlaces = function toDecimalPlaces(num, places) {
if (typeof places !== 'number' || places < 0) {
places = 0;
}
var scale = Math.pow(10, places);
return Math.round(num * scale) / scale;
};
/**
* A SourceBuffer implementation for Flash rather than HTML.
*
* @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource
* @param {Object} mediaSource the flash media source
* @class FlashSourceBuffer
* @extends videojs.EventTarget
*/
var FlashSourceBuffer = (function (_videojs$EventTarget) {
_inherits(FlashSourceBuffer, _videojs$EventTarget);
function FlashSourceBuffer(mediaSource) {
var _this = this;
_classCallCheck(this, FlashSourceBuffer);
_get(Object.getPrototypeOf(FlashSourceBuffer.prototype), 'constructor', this).call(this);
var encodedHeader = undefined;
// Start off using the globally defined value but refine
// as we append data into flash
this.chunkSize_ = _flashConstants2['default'].BYTES_PER_CHUNK;
// byte arrays queued to be appended
this.buffer_ = [];
// the total number of queued bytes
this.bufferSize_ = 0;
// to be able to determine the correct position to seek to, we
// need to retain information about the mapping between the
// media timeline and PTS values
this.basePtsOffset_ = NaN;
this.mediaSource_ = mediaSource;
this.audioBufferEnd_ = NaN;
this.videoBufferEnd_ = NaN;
// indicates whether the asynchronous continuation of an operation
// is still being processed
// see https://w3c.github.io/media-source/#widl-SourceBuffer-updating
this.updating = false;
this.timestampOffset_ = 0;
encodedHeader = _globalWindow2['default'].btoa(String.fromCharCode.apply(null, Array.prototype.slice.call(_muxJsLibFlv2['default'].getFlvHeader())));
// create function names with added randomness for the global callbacks flash will use
// to get data from javascript into the swf. Random strings are added as a safety
// measure for pages with multiple players since these functions will be global
// instead of per instance. When making a call to the swf, the browser generates a
// try catch code snippet, but just takes the function name and writes out an unquoted
// call to that function. If the player id has any special characters, this will result
// in an error, so safePlayerId replaces all special characters to '_'
var safePlayerId = this.mediaSource_.player_.id().replace(/[^a-zA-Z0-9]/g, '_');
this.flashEncodedHeaderName_ = 'vjs_flashEncodedHeader_' + safePlayerId + generateRandomString();
this.flashEncodedDataName_ = 'vjs_flashEncodedData_' + safePlayerId + generateRandomString();
_globalWindow2['default'][this.flashEncodedHeaderName_] = function () {
delete _globalWindow2['default'][_this.flashEncodedHeaderName_];
return encodedHeader;
};
this.mediaSource_.swfObj.vjs_appendChunkReady(this.flashEncodedHeaderName_);
this.transmuxer_ = (0, _webwackify2['default'])(_flashTransmuxerWorker2['default'], resolveFlashTransmuxWorker());
this.transmuxer_.postMessage({ action: 'init', options: {} });
this.transmuxer_.onmessage = function (event) {
if (event.data.action === 'data') {
_this.receiveBuffer_(event.data.segment);
}
};
this.one('updateend', function () {
_this.mediaSource_.tech_.trigger('loadedmetadata');
});
Object.defineProperty(this, 'timestampOffset', {
get: function get() {
return this.timestampOffset_;
},
set: function set(val) {
if (typeof val === 'number' && val >= 0) {
this.timestampOffset_ = val;
// We have to tell flash to expect a discontinuity
this.mediaSource_.swfObj.vjs_discontinuity();
// the media <-> PTS mapping must be re-established after
// the discontinuity
this.basePtsOffset_ = NaN;
this.audioBufferEnd_ = NaN;
this.videoBufferEnd_ = NaN;
this.transmuxer_.postMessage({ action: 'reset' });
}
}
});
Object.defineProperty(this, 'buffered', {
get: function get() {
if (!this.mediaSource_ || !this.mediaSource_.swfObj || !('vjs_getProperty' in this.mediaSource_.swfObj)) {
return _videoJs2['default'].createTimeRange();
}
var buffered = this.mediaSource_.swfObj.vjs_getProperty('buffered');
if (buffered && buffered.length) {
buffered[0][0] = toDecimalPlaces(buffered[0][0], 3);
buffered[0][1] = toDecimalPlaces(buffered[0][1], 3);
}
return _videoJs2['default'].createTimeRanges(buffered);
}
});
// On a seek we remove all text track data since flash has no concept
// of a buffered-range and everything else is reset on seek
this.mediaSource_.player_.on('seeked', function () {
(0, _removeCuesFromTrack2['default'])(0, Infinity, _this.metadataTrack_);
if (_this.inbandTextTracks_) {
for (var track in _this.inbandTextTracks_) {
(0, _removeCuesFromTrack2['default'])(0, Infinity, _this.inbandTextTracks_[track]);
}
}
});
var onHlsReset = this.onHlsReset_.bind(this);
// hls-reset is fired by videojs.Hls on to the tech after the main SegmentLoader
// resets its state and flushes the buffer
this.mediaSource_.player_.tech_.on('hls-reset', onHlsReset);
this.mediaSource_.player_.tech_.hls.on('dispose', function () {
_this.transmuxer_.terminate();
_this.mediaSource_.player_.tech_.off('hls-reset', onHlsReset);
});
}
/**
* Append bytes to the sourcebuffers buffer, in this case we
* have to append it to swf object.
*
* @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBuffer
* @param {Array} bytes
*/
_createClass(FlashSourceBuffer, [{
key: 'appendBuffer',
value: function appendBuffer(bytes) {
var error = undefined;
if (this.updating) {
error = new Error('SourceBuffer.append() cannot be called ' + 'while an update is in progress');
error.name = 'InvalidStateError';
error.code = 11;
throw error;
}
this.updating = true;
this.mediaSource_.readyState = 'open';
this.trigger({ type: 'update' });
this.transmuxer_.postMessage({
action: 'push',
data: bytes.buffer,
byteOffset: bytes.byteOffset,
byteLength: bytes.byteLength
}, [bytes.buffer]);
this.transmuxer_.postMessage({ action: 'flush' });
}
/**
* Reset the parser and remove any data queued to be sent to the SWF.
*
* @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/abort
*/
}, {
key: 'abort',
value: function abort() {
this.buffer_ = [];
this.bufferSize_ = 0;
this.mediaSource_.swfObj.vjs_abort();
// report any outstanding updates have ended
if (this.updating) {
this.updating = false;
this.trigger({ type: 'updateend' });
}
}
/**
* Flash cannot remove ranges already buffered in the NetStream
* but seeking clears the buffer entirely. For most purposes,
* having this operation act as a no-op is acceptable.
*
* @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/remove
* @param {Double} start start of the section to remove
* @param {Double} end end of the section to remove
*/
}, {
key: 'remove',
value: function remove(start, end) {
(0, _removeCuesFromTrack2['default'])(start, end, this.metadataTrack_);
if (this.inbandTextTracks_) {
for (var track in this.inbandTextTracks_) {
(0, _removeCuesFromTrack2['default'])(start, end, this.inbandTextTracks_[track]);
}
}
this.trigger({ type: 'update' });
this.trigger({ type: 'updateend' });
}
/**
* Receive a buffer from the flv.
*
* @param {Object} segment
* @private
*/
}, {
key: 'receiveBuffer_',
value: function receiveBuffer_(segment) {
var _this2 = this;
// create an in-band caption track if one is present in the segment
(0, _createTextTracksIfNecessary2['default'])(this, this.mediaSource_, segment);
(0, _addTextTrackData.addTextTrackData)(this, segment.captions, segment.metadata);
// Do this asynchronously since convertTagsToData_ can be time consuming
scheduleTick(function () {
var flvBytes = _this2.convertTagsToData_(segment);
if (_this2.buffer_.length === 0) {
scheduleTick(_this2.processBuffer_.bind(_this2));
}
if (flvBytes) {
_this2.buffer_.push(flvBytes);
_this2.bufferSize_ += flvBytes.byteLength;
}
});
}
/**
* Append a portion of the current buffer to the SWF.
*
* @private
*/
}, {
key: 'processBuffer_',
value: function processBuffer_() {
var _this3 = this;
var chunkSize = _flashConstants2['default'].BYTES_PER_CHUNK;
if (!this.buffer_.length) {
if (this.updating !== false) {
this.updating = false;
this.trigger({ type: 'updateend' });
}
// do nothing if the buffer is empty
return;
}
// concatenate appends up to the max append size
var chunk = this.buffer_[0].subarray(0, chunkSize);
// requeue any bytes that won't make it this round
if (chunk.byteLength < chunkSize || this.buffer_[0].byteLength === chunkSize) {
this.buffer_.shift();
} else {
this.buffer_[0] = this.buffer_[0].subarray(chunkSize);
}
this.bufferSize_ -= chunk.byteLength;
// base64 encode the bytes
var binary = [];
var length = chunk.byteLength;
for (var i = 0; i < length; i++) {
binary.push(String.fromCharCode(chunk[i]));
}
var b64str = _globalWindow2['default'].btoa(binary.join(''));
_globalWindow2['default'][this.flashEncodedDataName_] = function () {
// schedule another processBuffer to process any left over data or to
// trigger updateend
scheduleTick(_this3.processBuffer_.bind(_this3));
delete _globalWindow2['default'][_this3.flashEncodedDataName_];
return b64str;
};
// Notify the swf that segment data is ready to be appended
this.mediaSource_.swfObj.vjs_appendChunkReady(this.flashEncodedDataName_);
}
/**
* Turns an array of flv tags into a Uint8Array representing the
* flv data. Also removes any tags that are before the current
* time so that playback begins at or slightly after the right
* place on a seek
*
* @private
* @param {Object} segmentData object of segment data
*/
}, {
key: 'convertTagsToData_',
value: function convertTagsToData_(segmentData) {
var segmentByteLength = 0;
var tech = this.mediaSource_.tech_;
var videoTargetPts = 0;
var segment = undefined;
var videoTags = segmentData.tags.videoTags;
var audioTags = segmentData.tags.audioTags;
// Establish the media timeline to PTS translation if we don't
// have one already
if (isNaN(this.basePtsOffset_) && (videoTags.length || audioTags.length)) {
// We know there is at least one video or audio tag, but since we may not have both,
// we use pts: Infinity for the missing tag. The will force the following Math.min
// call will to use the proper pts value since it will always be less than Infinity
var firstVideoTag = videoTags[0] || { pts: Infinity };
var firstAudioTag = audioTags[0] || { pts: Infinity };
this.basePtsOffset_ = Math.min(firstAudioTag.pts, firstVideoTag.pts);
}
if (tech.seeking()) {
// Do not use previously saved buffer end values while seeking since buffer
// is cleared on all seeks
this.videoBufferEnd_ = NaN;
this.audioBufferEnd_ = NaN;
}
if (isNaN(this.videoBufferEnd_)) {
if (tech.buffered().length) {
videoTargetPts = tech.buffered().end(0) - this.timestampOffset;
}
// Trim to currentTime if seeking
if (tech.seeking()) {
videoTargetPts = Math.max(videoTargetPts, tech.currentTime() - this.timestampOffset);
}
// PTS values are represented in milliseconds
videoTargetPts *= 1e3;
videoTargetPts += this.basePtsOffset_;
} else {
// Add a fudge factor of 0.1 to the last video pts appended since a rendition change
// could append an overlapping segment, in which case there is a high likelyhood
// a tag could have a matching pts to videoBufferEnd_, which would cause
// that tag to get appended by the tag.pts >= targetPts check below even though it
// is a duplicate of what was previously appended
videoTargetPts = this.videoBufferEnd_ + 0.1;
}
// filter complete GOPs with a presentation time less than the seek target/end of buffer
var currentIndex = videoTags.length;
// if the last tag is beyond videoTargetPts, then do not search the list for a GOP
// since our videoTargetPts lies in a future segment
if (currentIndex && videoTags[currentIndex - 1].pts >= videoTargetPts) {
// Start by walking backwards from the end of the list until we reach a tag that
// is equal to or less than videoTargetPts
while (--currentIndex) {
var currentTag = videoTags[currentIndex];
if (currentTag.pts > videoTargetPts) {
continue;
}
// if we see a keyFrame or metadata tag once we've gone below videoTargetPts,
// exit the loop as this is the start of the GOP that we want to append
if (currentTag.keyFrame || currentTag.metaDataTag) {
break;
}
}
// We need to check if there are any metadata tags that come before currentIndex
// as those will be metadata tags associated with the GOP we are appending
// There could be 0 to 2 metadata tags that come before the currentIndex depending
// on what videoTargetPts is and whether the transmuxer prepended metadata tags to this
// key frame
while (currentIndex) {
var nextTag = videoTags[currentIndex - 1];
if (!nextTag.metaDataTag) {
break;
}
currentIndex--;
}
}
var filteredVideoTags = videoTags.slice(currentIndex);
var audioTargetPts = undefined;
if (isNaN(this.audioBufferEnd_)) {
audioTargetPts = videoTargetPts;
} else {
// Add a fudge factor of 0.1 to the last video pts appended since a rendition change
// could append an overlapping segment, in which case there is a high likelyhood
// a tag could have a matching pts to videoBufferEnd_, which would cause
// that tag to get appended by the tag.pts >= targetPts check below even though it
// is a duplicate of what was previously appended
audioTargetPts = this.audioBufferEnd_ + 0.1;
}
if (filteredVideoTags.length) {
// If targetPts intersects a GOP and we appended the tags for the GOP that came
// before targetPts, we want to make sure to trim audio tags at the pts
// of the first video tag to avoid brief moments of silence
audioTargetPts = Math.min(audioTargetPts, filteredVideoTags[0].pts);
}
// skip tags with a presentation time less than the seek target/end of buffer
currentIndex = 0;
while (currentIndex < audioTags.length) {
if (audioTags[currentIndex].pts >= audioTargetPts) {
break;
}
currentIndex++;
}
var filteredAudioTags = audioTags.slice(currentIndex);
// update the audio and video buffer ends
if (filteredAudioTags.length) {
this.audioBufferEnd_ = filteredAudioTags[filteredAudioTags.length - 1].pts;
}
if (filteredVideoTags.length) {
this.videoBufferEnd_ = filteredVideoTags[filteredVideoTags.length - 1].pts;
}
var tags = this.getOrderedTags_(filteredVideoTags, filteredAudioTags);
if (tags.length === 0) {
return;
}
// If we are appending data that comes before our target pts, we want to tell
// the swf to adjust its notion of current time to account for the extra tags
// we are appending to complete the GOP that intersects with targetPts
if (tags[0].pts < videoTargetPts && tech.seeking()) {
var fudgeFactor = 1 / 30;
var currentTime = tech.currentTime();
var diff = (videoTargetPts - tags[0].pts) / 1e3;
var adjustedTime = currentTime - diff;
if (adjustedTime < fudgeFactor) {
adjustedTime = 0;
}
try {
this.mediaSource_.swfObj.vjs_adjustCurrentTime(adjustedTime);
} catch (e) {
// no-op for backwards compatability of swf. If adjustCurrentTime fails,
// the swf may incorrectly report currentTime and buffered ranges
// but should not affect playback over than the time displayed on the
// progress bar is inaccurate
}
}
// concatenate the bytes into a single segment
for (var i = 0; i < tags.length; i++) {
segmentByteLength += tags[i].bytes.byteLength;
}
segment = new Uint8Array(segmentByteLength);
for (var i = 0, j = 0; i < tags.length; i++) {
segment.set(tags[i].bytes, j);
j += tags[i].bytes.byteLength;
}
return segment;
}
/**
* Assemble the FLV tags in decoder order.
*
* @private
* @param {Array} videoTags list of video tags
* @param {Array} audioTags list of audio tags
*/
}, {
key: 'getOrderedTags_',
value: function getOrderedTags_(videoTags, audioTags) {
var tag = undefined;
var tags = [];
while (videoTags.length || audioTags.length) {
if (!videoTags.length) {
// only audio tags remain
tag = audioTags.shift();
} else if (!audioTags.length) {
// only video tags remain
tag = videoTags.shift();
} else if (audioTags[0].dts < videoTags[0].dts) {
// audio should be decoded next
tag = audioTags.shift();
} else {
// video should be decoded next
tag = videoTags.shift();
}
tags.push(tag);
}
return tags;
}
}, {
key: 'onHlsReset_',
value: function onHlsReset_() {
this.transmuxer_.postMessage({ action: 'resetCaptions' });
}
}]);
return FlashSourceBuffer;
})(_videoJs2['default'].EventTarget);
exports['default'] = FlashSourceBuffer;
module.exports = exports['default'];
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./add-text-track-data":35,"./create-text-tracks-if-necessary":37,"./flash-constants":38,"./flash-transmuxer-worker":41,"./remove-cues-from-track":43,"global/window":3,"mux.js/lib/flv":13,"webwackify":34}],41:[function(require,module,exports){
/**
* @file flash-transmuxer-worker.js
*/
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
var _globalWindow = require('global/window');
var _globalWindow2 = _interopRequireDefault(_globalWindow);
var _muxJsLibFlv = require('mux.js/lib/flv');
var _muxJsLibFlv2 = _interopRequireDefault(_muxJsLibFlv);
/**
* Re-emits transmuxer events by converting them into messages to the
* world outside the worker.
*
* @param {Object} transmuxer the transmuxer to wire events on
* @private
*/
var wireTransmuxerEvents = function wireTransmuxerEvents(transmuxer) {
transmuxer.on('data', function (segment) {
_globalWindow2['default'].postMessage({
action: 'data',
segment: segment
});
});
transmuxer.on('done', function (data) {
_globalWindow2['default'].postMessage({ action: 'done' });
});
};
/**
* All incoming messages route through this hash. If no function exists
* to handle an incoming message, then we ignore the message.
*
* @class MessageHandlers
* @param {Object} options the options to initialize with
*/
var MessageHandlers = (function () {
function MessageHandlers(options) {
_classCallCheck(this, MessageHandlers);
this.options = options || {};
this.init();
}
/**
* Our web wroker interface so that things can talk to mux.js
* that will be running in a web worker. The scope is passed to this by
* webworkify.
*
* @param {Object} self the scope for the web worker
*/
/**
* initialize our web worker and wire all the events.
*/
_createClass(MessageHandlers, [{
key: 'init',
value: function init() {
if (this.transmuxer) {
this.transmuxer.dispose();
}
this.transmuxer = new _muxJsLibFlv2['default'].Transmuxer(this.options);
wireTransmuxerEvents(this.transmuxer);
}
/**
* Adds data (a ts segment) to the start of the transmuxer pipeline for
* processing.
*
* @param {ArrayBuffer} data data to push into the muxer
*/
}, {
key: 'push',
value: function push(data) {
// Cast array buffer to correct type for transmuxer
var segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);
this.transmuxer.push(segment);
}
/**
* Recreate the transmuxer so that the next segment added via `push`
* start with a fresh transmuxer.
*/
}, {
key: 'reset',
value: function reset() {
this.init();
}
/**
* Forces the pipeline to finish processing the last segment and emit its
* results.
*/
}, {
key: 'flush',
value: function flush() {
this.transmuxer.flush();
}
}, {
key: 'resetCaptions',
value: function resetCaptions() {
this.transmuxer.resetCaptions();
}
}]);
return MessageHandlers;
})();
var FlashTransmuxerWorker = function FlashTransmuxerWorker(self) {
self.onmessage = function (event) {
if (event.data.action === 'init' && event.data.options) {
this.messageHandlers = new MessageHandlers(event.data.options);
return;
}
if (!this.messageHandlers) {
this.messageHandlers = new MessageHandlers();
}
if (event.data && event.data.action && event.data.action !== 'init') {
if (this.messageHandlers[event.data.action]) {
this.messageHandlers[event.data.action](event.data);
}
}
};
};
exports['default'] = function (self) {
return new FlashTransmuxerWorker(self);
};
module.exports = exports['default'];
},{"global/window":3,"mux.js/lib/flv":13}],42:[function(require,module,exports){
(function (global){
/**
* @file html-media-source.js
*/
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
var _globalWindow = require('global/window');
var _globalWindow2 = _interopRequireDefault(_globalWindow);
var _globalDocument = require('global/document');
var _globalDocument2 = _interopRequireDefault(_globalDocument);
var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
var _videoJs2 = _interopRequireDefault(_videoJs);
var _virtualSourceBuffer = require('./virtual-source-buffer');
var _virtualSourceBuffer2 = _interopRequireDefault(_virtualSourceBuffer);
var _addTextTrackData = require('./add-text-track-data');
var _codecUtils = require('./codec-utils');
/**
* Our MediaSource implementation in HTML, mimics native
* MediaSource where/if possible.
*
* @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource
* @class HtmlMediaSource
* @extends videojs.EventTarget
*/
var HtmlMediaSource = (function (_videojs$EventTarget) {
_inherits(HtmlMediaSource, _videojs$EventTarget);
function HtmlMediaSource() {
var _this = this;
_classCallCheck(this, HtmlMediaSource);
_get(Object.getPrototypeOf(HtmlMediaSource.prototype), 'constructor', this).call(this);
var property = undefined;
this.nativeMediaSource_ = new _globalWindow2['default'].MediaSource();
// delegate to the native MediaSource's methods by default
for (property in this.nativeMediaSource_) {
if (!(property in HtmlMediaSource.prototype) && typeof this.nativeMediaSource_[property] === 'function') {
this[property] = this.nativeMediaSource_[property].bind(this.nativeMediaSource_);
}
}
// emulate `duration` and `seekable` until seeking can be
// handled uniformly for live streams
// see https://github.com/w3c/media-source/issues/5
this.duration_ = NaN;
Object.defineProperty(this, 'duration', {
get: function get() {
if (this.duration_ === Infinity) {
return this.duration_;
}
return this.nativeMediaSource_.duration;
},
set: function set(duration) {
this.duration_ = duration;
if (duration !== Infinity) {
this.nativeMediaSource_.duration = duration;
return;
}
}
});
Object.defineProperty(this, 'seekable', {
get: function get() {
if (this.duration_ === Infinity) {
return _videoJs2['default'].createTimeRanges([[0, this.nativeMediaSource_.duration]]);
}
return this.nativeMediaSource_.seekable;
}
});
Object.defineProperty(this, 'readyState', {
get: function get() {
return this.nativeMediaSource_.readyState;
}
});
Object.defineProperty(this, 'activeSourceBuffers', {
get: function get() {
return this.activeSourceBuffers_;
}
});
// the list of virtual and native SourceBuffers created by this
// MediaSource
this.sourceBuffers = [];
this.activeSourceBuffers_ = [];
/**
* update the list of active source buffers based upon various
* imformation from HLS and video.js
*
* @private
*/
this.updateActiveSourceBuffers_ = function () {
// Retain the reference but empty the array
_this.activeSourceBuffers_.length = 0;
// If there is only one source buffer, then it will always be active and audio will
// be disabled based on the codec of the source buffer
if (_this.sourceBuffers.length === 1) {
var sourceBuffer = _this.sourceBuffers[0];
sourceBuffer.appendAudioInitSegment_ = true;
sourceBuffer.audioDisabled_ = !sourceBuffer.audioCodec_;
_this.activeSourceBuffers_.push(sourceBuffer);
return;
}
// There are 2 source buffers, a combined (possibly video only) source buffer and
// and an audio only source buffer.
// By default, the audio in the combined virtual source buffer is enabled
// and the audio-only source buffer (if it exists) is disabled.
var disableCombined = false;
var disableAudioOnly = true;
// TODO: maybe we can store the sourcebuffers on the track objects?
// safari may do something like this
for (var i = 0; i < _this.player_.audioTracks().length; i++) {
var track = _this.player_.audioTracks()[i];
if (track.enabled && track.kind !== 'main') {
// The enabled track is an alternate audio track so disable the audio in
// the combined source buffer and enable the audio-only source buffer.
disableCombined = true;
disableAudioOnly = false;
break;
}
}
_this.sourceBuffers.forEach(function (sourceBuffer) {
/* eslinst-disable */
// TODO once codecs are required, we can switch to using the codecs to determine
// what stream is the video stream, rather than relying on videoTracks
/* eslinst-enable */
sourceBuffer.appendAudioInitSegment_ = true;
if (sourceBuffer.videoCodec_ && sourceBuffer.audioCodec_) {
// combined
sourceBuffer.audioDisabled_ = disableCombined;
} else if (sourceBuffer.videoCodec_ && !sourceBuffer.audioCodec_) {
// If the "combined" source buffer is video only, then we do not want
// disable the audio-only source buffer (this is mostly for demuxed
// audio and video hls)
sourceBuffer.audioDisabled_ = true;
disableAudioOnly = false;
} else if (!sourceBuffer.videoCodec_ && sourceBuffer.audioCodec_) {
// audio only
sourceBuffer.audioDisabled_ = disableAudioOnly;
if (disableAudioOnly) {
return;
}
}
_this.activeSourceBuffers_.push(sourceBuffer);
});
};
this.onPlayerMediachange_ = function () {
_this.sourceBuffers.forEach(function (sourceBuffer) {
sourceBuffer.appendAudioInitSegment_ = true;
});
};
this.onHlsReset_ = function () {
_this.sourceBuffers.forEach(function (sourceBuffer) {
if (sourceBuffer.transmuxer_) {
sourceBuffer.transmuxer_.postMessage({ action: 'resetCaptions' });
}
});
};
this.onHlsSegmentTimeMapping_ = function (event) {
_this.sourceBuffers.forEach(function (buffer) {
return buffer.timeMapping_ = event.mapping;
});
};
// Re-emit MediaSource events on the polyfill
['sourceopen', 'sourceclose', 'sourceended'].forEach(function (eventName) {
this.nativeMediaSource_.addEventListener(eventName, this.trigger.bind(this));
}, this);
// capture the associated player when the MediaSource is
// successfully attached
this.on('sourceopen', function (event) {
// Get the player this MediaSource is attached to
var video = _globalDocument2['default'].querySelector('[src="' + _this.url_ + '"]');
if (!video) {
return;
}
_this.player_ = (0, _videoJs2['default'])(video.parentNode);
// hls-reset is fired by videojs.Hls on to the tech after the main SegmentLoader
// resets its state and flushes the buffer
_this.player_.tech_.on('hls-reset', _this.onHlsReset_);
// hls-segment-time-mapping is fired by videojs.Hls on to the tech after the main
// SegmentLoader inspects an MTS segment and has an accurate stream to display
// time mapping
_this.player_.tech_.on('hls-segment-time-mapping', _this.onHlsSegmentTimeMapping_);
if (_this.player_.audioTracks && _this.player_.audioTracks()) {
_this.player_.audioTracks().on('change', _this.updateActiveSourceBuffers_);
_this.player_.audioTracks().on('addtrack', _this.updateActiveSourceBuffers_);
_this.player_.audioTracks().on('removetrack', _this.updateActiveSourceBuffers_);
}
_this.player_.on('mediachange', _this.onPlayerMediachange_);
});
this.on('sourceended', function (event) {
var duration = (0, _addTextTrackData.durationOfVideo)(_this.duration);
for (var i = 0; i < _this.sourceBuffers.length; i++) {
var sourcebuffer = _this.sourceBuffers[i];
var cues = sourcebuffer.metadataTrack_ && sourcebuffer.metadataTrack_.cues;
if (cues && cues.length) {
cues[cues.length - 1].endTime = duration;
}
}
});
// explicitly terminate any WebWorkers that were created
// by SourceHandlers
this.on('sourceclose', function (event) {
this.sourceBuffers.forEach(function (sourceBuffer) {
if (sourceBuffer.transmuxer_) {
sourceBuffer.transmuxer_.terminate();
}
});
this.sourceBuffers.length = 0;
if (!this.player_) {
return;
}
if (this.player_.audioTracks && this.player_.audioTracks()) {
this.player_.audioTracks().off('change', this.updateActiveSourceBuffers_);
this.player_.audioTracks().off('addtrack', this.updateActiveSourceBuffers_);
this.player_.audioTracks().off('removetrack', this.updateActiveSourceBuffers_);
}
// We can only change this if the player hasn't been disposed of yet
// because `off` eventually tries to use the el_ property. If it has
// been disposed of, then don't worry about it because there are no
// event handlers left to unbind anyway
if (this.player_.el_) {
this.player_.off('mediachange', this.onPlayerMediachange_);
this.player_.tech_.off('hls-reset', this.onHlsReset_);
this.player_.tech_.off('hls-segment-time-mapping', this.onHlsSegmentTimeMapping_);
}
});
}
/**
* Add a range that that can now be seeked to.
*
* @param {Double} start where to start the addition
* @param {Double} end where to end the addition
* @private
*/
_createClass(HtmlMediaSource, [{
key: 'addSeekableRange_',
value: function addSeekableRange_(start, end) {
var error = undefined;
if (this.duration !== Infinity) {
error = new Error('MediaSource.addSeekableRange() can only be invoked ' + 'when the duration is Infinity');
error.name = 'InvalidStateError';
error.code = 11;
throw error;
}
if (end > this.nativeMediaSource_.duration || isNaN(this.nativeMediaSource_.duration)) {
this.nativeMediaSource_.duration = end;
}
}
/**
* Add a source buffer to the media source.
*
* @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/addSourceBuffer
* @param {String} type the content-type of the content
* @return {Object} the created source buffer
*/
}, {
key: 'addSourceBuffer',
value: function addSourceBuffer(type) {
var buffer = undefined;
var parsedType = (0, _codecUtils.parseContentType)(type);
// Create a VirtualSourceBuffer to transmux MPEG-2 transport
// stream segments into fragmented MP4s
if (/^(video|audio)\/mp2t$/i.test(parsedType.type)) {
var codecs = [];
if (parsedType.parameters && parsedType.parameters.codecs) {
codecs = parsedType.parameters.codecs.split(',');
codecs = (0, _codecUtils.translateLegacyCodecs)(codecs);
codecs = codecs.filter(function (codec) {
return (0, _codecUtils.isAudioCodec)(codec) || (0, _codecUtils.isVideoCodec)(codec);
});
}
if (codecs.length === 0) {
codecs = ['avc1.4d400d', 'mp4a.40.2'];
}
buffer = new _virtualSourceBuffer2['default'](this, codecs);
if (this.sourceBuffers.length !== 0) {
// If another VirtualSourceBuffer already exists, then we are creating a
// SourceBuffer for an alternate audio track and therefore we know that
// the source has both an audio and video track.
// That means we should trigger the manual creation of the real
// SourceBuffers instead of waiting for the transmuxer to return data
this.sourceBuffers[0].createRealSourceBuffers_();
buffer.createRealSourceBuffers_();
// Automatically disable the audio on the first source buffer if
// a second source buffer is ever created
this.sourceBuffers[0].audioDisabled_ = true;
}
} else {
// delegate to the native implementation
buffer = this.nativeMediaSource_.addSourceBuffer(type);
}
this.sourceBuffers.push(buffer);
return buffer;
}
}]);
return HtmlMediaSource;
})(_videoJs2['default'].EventTarget);
exports['default'] = HtmlMediaSource;
module.exports = exports['default'];
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./add-text-track-data":35,"./codec-utils":36,"./virtual-source-buffer":46,"global/document":2,"global/window":3}],43:[function(require,module,exports){
/**
* @file remove-cues-from-track.js
*/
/**
* Remove cues from a track on video.js.
*
* @param {Double} start start of where we should remove the cue
* @param {Double} end end of where the we should remove the cue
* @param {Object} track the text track to remove the cues from
* @private
*/
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var removeCuesFromTrack = function removeCuesFromTrack(start, end, track) {
var i = undefined;
var cue = undefined;
if (!track) {
return;
}
if (!track.cues) {
return;
}
i = track.cues.length;
while (i--) {
cue = track.cues[i];
// Remove any overlapping cue
if (cue.startTime <= end && cue.endTime >= start) {
track.removeCue(cue);
}
}
};
exports["default"] = removeCuesFromTrack;
module.exports = exports["default"];
},{}],44:[function(require,module,exports){
/**
* @file transmuxer-worker.js
*/
/**
* videojs-contrib-media-sources
*
* Copyright (c) 2015 Brightcove
* All rights reserved.
*
* Handles communication between the browser-world and the mux.js
* transmuxer running inside of a WebWorker by exposing a simple
* message-based interface to a Transmuxer object.
*/
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
var _globalWindow = require('global/window');
var _globalWindow2 = _interopRequireDefault(_globalWindow);
var _muxJsLibMp4 = require('mux.js/lib/mp4');
var _muxJsLibMp42 = _interopRequireDefault(_muxJsLibMp4);
/**
* Re-emits transmuxer events by converting them into messages to the
* world outside the worker.
*
* @param {Object} transmuxer the transmuxer to wire events on
* @private
*/
var wireTransmuxerEvents = function wireTransmuxerEvents(transmuxer) {
transmuxer.on('data', function (segment) {
// transfer ownership of the underlying ArrayBuffer
// instead of doing a copy to save memory
// ArrayBuffers are transferable but generic TypedArrays are not
// @link https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers#Passing_data_by_transferring_ownership_(transferable_objects)
var initArray = segment.initSegment;
segment.initSegment = {
data: initArray.buffer,
byteOffset: initArray.byteOffset,
byteLength: initArray.byteLength
};
var typedArray = segment.data;
segment.data = typedArray.buffer;
_globalWindow2['default'].postMessage({
action: 'data',
segment: segment,
byteOffset: typedArray.byteOffset,
byteLength: typedArray.byteLength
}, [segment.data]);
});
if (transmuxer.captionStream) {
transmuxer.captionStream.on('data', function (caption) {
_globalWindow2['default'].postMessage({
action: 'caption',
data: caption
});
});
}
transmuxer.on('done', function (data) {
_globalWindow2['default'].postMessage({ action: 'done' });
});
transmuxer.on('gopInfo', function (gopInfo) {
_globalWindow2['default'].postMessage({
action: 'gopInfo',
gopInfo: gopInfo
});
});
};
/**
* All incoming messages route through this hash. If no function exists
* to handle an incoming message, then we ignore the message.
*
* @class MessageHandlers
* @param {Object} options the options to initialize with
*/
var MessageHandlers = (function () {
function MessageHandlers(options) {
_classCallCheck(this, MessageHandlers);
this.options = options || {};
this.init();
}
/**
* Our web wroker interface so that things can talk to mux.js
* that will be running in a web worker. the scope is passed to this by
* webworkify.
*
* @param {Object} self the scope for the web worker
*/
/**
* initialize our web worker and wire all the events.
*/
_createClass(MessageHandlers, [{
key: 'init',
value: function init() {
if (this.transmuxer) {
this.transmuxer.dispose();
}
this.transmuxer = new _muxJsLibMp42['default'].Transmuxer(this.options);
wireTransmuxerEvents(this.transmuxer);
}
/**
* Adds data (a ts segment) to the start of the transmuxer pipeline for
* processing.
*
* @param {ArrayBuffer} data data to push into the muxer
*/
}, {
key: 'push',
value: function push(data) {
// Cast array buffer to correct type for transmuxer
var segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);
this.transmuxer.push(segment);
}
/**
* Recreate the transmuxer so that the next segment added via `push`
* start with a fresh transmuxer.
*/
}, {
key: 'reset',
value: function reset() {
this.init();
}
/**
* Set the value that will be used as the `baseMediaDecodeTime` time for the
* next segment pushed in. Subsequent segments will have their `baseMediaDecodeTime`
* set relative to the first based on the PTS values.
*
* @param {Object} data used to set the timestamp offset in the muxer
*/
}, {
key: 'setTimestampOffset',
value: function setTimestampOffset(data) {
var timestampOffset = data.timestampOffset || 0;
this.transmuxer.setBaseMediaDecodeTime(Math.round(timestampOffset * 90000));
}
}, {
key: 'setAudioAppendStart',
value: function setAudioAppendStart(data) {
this.transmuxer.setAudioAppendStart(Math.ceil(data.appendStart * 90000));
}
/**
* Forces the pipeline to finish processing the last segment and emit it's
* results.
*
* @param {Object} data event data, not really used
*/
}, {
key: 'flush',
value: function flush(data) {
this.transmuxer.flush();
}
}, {
key: 'resetCaptions',
value: function resetCaptions() {
this.transmuxer.resetCaptions();
}
}, {
key: 'alignGopsWith',
value: function alignGopsWith(data) {
this.transmuxer.alignGopsWith(data.gopsToAlignWith.slice());
}
}]);
return MessageHandlers;
})();
var TransmuxerWorker = function TransmuxerWorker(self) {
self.onmessage = function (event) {
if (event.data.action === 'init' && event.data.options) {
this.messageHandlers = new MessageHandlers(event.data.options);
return;
}
if (!this.messageHandlers) {
this.messageHandlers = new MessageHandlers();
}
if (event.data && event.data.action && event.data.action !== 'init') {
if (this.messageHandlers[event.data.action]) {
this.messageHandlers[event.data.action](event.data);
}
}
};
};
exports['default'] = function (self) {
return new TransmuxerWorker(self);
};
module.exports = exports['default'];
},{"global/window":3,"mux.js/lib/mp4":24}],45:[function(require,module,exports){
(function (global){
/**
* @file videojs-contrib-media-sources.js
*/
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
var _globalWindow = require('global/window');
var _globalWindow2 = _interopRequireDefault(_globalWindow);
var _flashMediaSource = require('./flash-media-source');
var _flashMediaSource2 = _interopRequireDefault(_flashMediaSource);
var _htmlMediaSource = require('./html-media-source');
var _htmlMediaSource2 = _interopRequireDefault(_htmlMediaSource);
var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
var _videoJs2 = _interopRequireDefault(_videoJs);
var urlCount = 0;
// ------------
// Media Source
// ------------
var defaults = {
// how to determine the MediaSource implementation to use. There
// are three available modes:
// - auto: use native MediaSources where available and Flash
// everywhere else
// - html5: always use native MediaSources
// - flash: always use the Flash MediaSource polyfill
mode: 'auto'
};
// store references to the media sources so they can be connected
// to a video element (a swf object)
// TODO: can we store this somewhere local to this module?
_videoJs2['default'].mediaSources = {};
/**
* Provide a method for a swf object to notify JS that a
* media source is now open.
*
* @param {String} msObjectURL string referencing the MSE Object URL
* @param {String} swfId the swf id
*/
var open = function open(msObjectURL, swfId) {
var mediaSource = _videoJs2['default'].mediaSources[msObjectURL];
if (mediaSource) {
mediaSource.trigger({ type: 'sourceopen', swfId: swfId });
} else {
throw new Error('Media Source not found (Video.js)');
}
};
/**
* Check to see if the native MediaSource object exists and supports
* an MP4 container with both H.264 video and AAC-LC audio.
*
* @return {Boolean} if native media sources are supported
*/
var supportsNativeMediaSources = function supportsNativeMediaSources() {
return !!_globalWindow2['default'].MediaSource && !!_globalWindow2['default'].MediaSource.isTypeSupported && _globalWindow2['default'].MediaSource.isTypeSupported('video/mp4;codecs="avc1.4d400d,mp4a.40.2"');
};
/**
* An emulation of the MediaSource API so that we can support
* native and non-native functionality such as flash and
* video/mp2t videos. returns an instance of HtmlMediaSource or
* FlashMediaSource depending on what is supported and what options
* are passed in.
*
* @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/MediaSource
* @param {Object} options options to use during setup.
*/
var MediaSource = function MediaSource(options) {
var settings = _videoJs2['default'].mergeOptions(defaults, options);
this.MediaSource = {
open: open,
supportsNativeMediaSources: supportsNativeMediaSources
};
// determine whether HTML MediaSources should be used
if (settings.mode === 'html5' || settings.mode === 'auto' && supportsNativeMediaSources()) {
return new _htmlMediaSource2['default']();
} else if (_videoJs2['default'].getTech('Flash')) {
return new _flashMediaSource2['default']();
}
throw new Error('Cannot use Flash or Html5 to create a MediaSource for this video');
};
exports.MediaSource = MediaSource;
MediaSource.open = open;
MediaSource.supportsNativeMediaSources = supportsNativeMediaSources;
/**
* A wrapper around the native URL for our MSE object
* implementation, this object is exposed under videojs.URL
*
* @link https://developer.mozilla.org/en-US/docs/Web/API/URL/URL
*/
var URL = {
/**
* A wrapper around the native createObjectURL for our objects.
* This function maps a native or emulated mediaSource to a blob
* url so that it can be loaded into video.js
*
* @link https://developer.mozilla.org/en-US/docs/Web/API/URL/createObjectURL
* @param {MediaSource} object the object to create a blob url to
*/
createObjectURL: function createObjectURL(object) {
var objectUrlPrefix = 'blob:vjs-media-source/';
var url = undefined;
// use the native MediaSource to generate an object URL
if (object instanceof _htmlMediaSource2['default']) {
url = _globalWindow2['default'].URL.createObjectURL(object.nativeMediaSource_);
object.url_ = url;
return url;
}
// if the object isn't an emulated MediaSource, delegate to the
// native implementation
if (!(object instanceof _flashMediaSource2['default'])) {
url = _globalWindow2['default'].URL.createObjectURL(object);
object.url_ = url;
return url;
}
// build a URL that can be used to map back to the emulated
// MediaSource
url = objectUrlPrefix + urlCount;
urlCount++;
// setup the mapping back to object
_videoJs2['default'].mediaSources[url] = object;
return url;
}
};
exports.URL = URL;
_videoJs2['default'].MediaSource = MediaSource;
_videoJs2['default'].URL = URL;
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./flash-media-source":39,"./html-media-source":42,"global/window":3}],46:[function(require,module,exports){
(function (global){
/**
* @file virtual-source-buffer.js
*/
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
var _videoJs2 = _interopRequireDefault(_videoJs);
var _createTextTracksIfNecessary = require('./create-text-tracks-if-necessary');
var _createTextTracksIfNecessary2 = _interopRequireDefault(_createTextTracksIfNecessary);
var _removeCuesFromTrack = require('./remove-cues-from-track');
var _removeCuesFromTrack2 = _interopRequireDefault(_removeCuesFromTrack);
var _addTextTrackData = require('./add-text-track-data');
var _webwackify = require('webwackify');
var _webwackify2 = _interopRequireDefault(_webwackify);
var _transmuxerWorker = require('./transmuxer-worker');
var _transmuxerWorker2 = _interopRequireDefault(_transmuxerWorker);
var _codecUtils = require('./codec-utils');
var resolveTransmuxWorker = function resolveTransmuxWorker() {
var result = undefined;
try {
result = require.resolve('./transmuxer-worker');
} catch (e) {
// no result
}
return result;
};
// We create a wrapper around the SourceBuffer so that we can manage the
// state of the `updating` property manually. We have to do this because
// Firefox changes `updating` to false long before triggering `updateend`
// events and that was causing strange problems in videojs-contrib-hls
var makeWrappedSourceBuffer = function makeWrappedSourceBuffer(mediaSource, mimeType) {
var sourceBuffer = mediaSource.addSourceBuffer(mimeType);
var wrapper = Object.create(null);
wrapper.updating = false;
wrapper.realBuffer_ = sourceBuffer;
var _loop = function (key) {
if (typeof sourceBuffer[key] === 'function') {
wrapper[key] = function () {
return sourceBuffer[key].apply(sourceBuffer, arguments);
};
} else if (typeof wrapper[key] === 'undefined') {
Object.defineProperty(wrapper, key, {
get: function get() {
return sourceBuffer[key];
},
set: function set(v) {
return sourceBuffer[key] = v;
}
});
}
};
for (var key in sourceBuffer) {
_loop(key);
}
return wrapper;
};
/**
* Returns a list of gops in the buffer that have a pts value of 3 seconds or more in
* front of current time.
*
* @param {Array} buffer
* The current buffer of gop information
* @param {Player} player
* The player instance
* @param {Double} mapping
* Offset to map display time to stream presentation time
* @return {Array}
* List of gops considered safe to append over
*/
var gopsSafeToAlignWith = function gopsSafeToAlignWith(buffer, player, mapping) {
if (!player || !buffer.length) {
return [];
}
// pts value for current time + 3 seconds to give a bit more wiggle room
var currentTimePts = Math.ceil((player.currentTime() - mapping + 3) * 90000);
var i = undefined;
for (i = 0; i < buffer.length; i++) {
if (buffer[i].pts > currentTimePts) {
break;
}
}
return buffer.slice(i);
};
exports.gopsSafeToAlignWith = gopsSafeToAlignWith;
/**
* Appends gop information (timing and byteLength) received by the transmuxer for the
* gops appended in the last call to appendBuffer
*
* @param {Array} buffer
* The current buffer of gop information
* @param {Array} gops
* List of new gop information
* @param {boolean} replace
* If true, replace the buffer with the new gop information. If false, append the
* new gop information to the buffer in the right location of time.
* @return {Array}
* Updated list of gop information
*/
var updateGopBuffer = function updateGopBuffer(buffer, gops, replace) {
if (!gops.length) {
return buffer;
}
if (replace) {
// If we are in safe append mode, then completely overwrite the gop buffer
// with the most recent appeneded data. This will make sure that when appending
// future segments, we only try to align with gops that are both ahead of current
// time and in the last segment appended.
return gops.slice();
}
var start = gops[0].pts;
var i = 0;
for (i; i < buffer.length; i++) {
if (buffer[i].pts >= start) {
break;
}
}
return buffer.slice(0, i).concat(gops);
};
exports.updateGopBuffer = updateGopBuffer;
/**
* Removes gop information in buffer that overlaps with provided start and end
*
* @param {Array} buffer
* The current buffer of gop information
* @param {Double} start
* position to start the remove at
* @param {Double} end
* position to end the remove at
* @param {Double} mapping
* Offset to map display time to stream presentation time
*/
var removeGopBuffer = function removeGopBuffer(buffer, start, end, mapping) {
var startPts = Math.ceil((start - mapping) * 90000);
var endPts = Math.ceil((end - mapping) * 90000);
var updatedBuffer = buffer.slice();
var i = buffer.length;
while (i--) {
if (buffer[i].pts <= endPts) {
break;
}
}
if (i === -1) {
// no removal because end of remove range is before start of buffer
return updatedBuffer;
}
var j = i + 1;
while (j--) {
if (buffer[j].pts <= startPts) {
break;
}
}
// clamp remove range start to 0 index
j = Math.max(j, 0);
updatedBuffer.splice(j, i - j + 1);
return updatedBuffer;
};
exports.removeGopBuffer = removeGopBuffer;
/**
* VirtualSourceBuffers exist so that we can transmux non native formats
* into a native format, but keep the same api as a native source buffer.
* It creates a transmuxer, that works in its own thread (a web worker) and
* that transmuxer muxes the data into a native format. VirtualSourceBuffer will
* then send all of that data to the naive sourcebuffer so that it is
* indestinguishable from a natively supported format.
*
* @param {HtmlMediaSource} mediaSource the parent mediaSource
* @param {Array} codecs array of codecs that we will be dealing with
* @class VirtualSourceBuffer
* @extends video.js.EventTarget
*/
var VirtualSourceBuffer = (function (_videojs$EventTarget) {
_inherits(VirtualSourceBuffer, _videojs$EventTarget);
function VirtualSourceBuffer(mediaSource, codecs) {
var _this = this;
_classCallCheck(this, VirtualSourceBuffer);
_get(Object.getPrototypeOf(VirtualSourceBuffer.prototype), 'constructor', this).call(this, _videoJs2['default'].EventTarget);
this.timestampOffset_ = 0;
this.pendingBuffers_ = [];
this.bufferUpdating_ = false;
this.mediaSource_ = mediaSource;
this.codecs_ = codecs;
this.audioCodec_ = null;
this.videoCodec_ = null;
this.audioDisabled_ = false;
this.appendAudioInitSegment_ = true;
this.gopBuffer_ = [];
this.timeMapping_ = 0;
this.safeAppend_ = _videoJs2['default'].browser.IE_VERSION >= 11;
var options = {
remux: false,
alignGopsAtEnd: this.safeAppend_
};
this.codecs_.forEach(function (codec) {
if ((0, _codecUtils.isAudioCodec)(codec)) {
_this.audioCodec_ = codec;
} else if ((0, _codecUtils.isVideoCodec)(codec)) {
_this.videoCodec_ = codec;
}
});
// append muxed segments to their respective native buffers as
// soon as they are available
this.transmuxer_ = (0, _webwackify2['default'])(_transmuxerWorker2['default'], resolveTransmuxWorker());
this.transmuxer_.postMessage({ action: 'init', options: options });
this.transmuxer_.onmessage = function (event) {
if (event.data.action === 'data') {
return _this.data_(event);
}
if (event.data.action === 'done') {
return _this.done_(event);
}
if (event.data.action === 'gopInfo') {
return _this.appendGopInfo_(event);
}
};
// this timestampOffset is a property with the side-effect of resetting
// baseMediaDecodeTime in the transmuxer on the setter
Object.defineProperty(this, 'timestampOffset', {
get: function get() {
return this.timestampOffset_;
},
set: function set(val) {
if (typeof val === 'number' && val >= 0) {
this.timestampOffset_ = val;
this.appendAudioInitSegment_ = true;
// reset gop buffer on timestampoffset as this signals a change in timeline
this.gopBuffer_.length = 0;
this.timeMapping_ = 0;
// We have to tell the transmuxer to set the baseMediaDecodeTime to
// the desired timestampOffset for the next segment
this.transmuxer_.postMessage({
action: 'setTimestampOffset',
timestampOffset: val
});
}
}
});
// setting the append window affects both source buffers
Object.defineProperty(this, 'appendWindowStart', {
get: function get() {
return (this.videoBuffer_ || this.audioBuffer_).appendWindowStart;
},
set: function set(start) {
if (this.videoBuffer_) {
this.videoBuffer_.appendWindowStart = start;
}
if (this.audioBuffer_) {
this.audioBuffer_.appendWindowStart = start;
}
}
});
// this buffer is "updating" if either of its native buffers are
Object.defineProperty(this, 'updating', {
get: function get() {
return !!(this.bufferUpdating_ || !this.audioDisabled_ && this.audioBuffer_ && this.audioBuffer_.updating || this.videoBuffer_ && this.videoBuffer_.updating);
}
});
// the buffered property is the intersection of the buffered
// ranges of the native source buffers
Object.defineProperty(this, 'buffered', {
get: function get() {
var start = null;
var end = null;
var arity = 0;
var extents = [];
var ranges = [];
// neither buffer has been created yet
if (!this.videoBuffer_ && !this.audioBuffer_) {
return _videoJs2['default'].createTimeRange();
}
// only one buffer is configured
if (!this.videoBuffer_) {
return this.audioBuffer_.buffered;
}
if (!this.audioBuffer_) {
return this.videoBuffer_.buffered;
}
// both buffers are configured
if (this.audioDisabled_) {
return this.videoBuffer_.buffered;
}
// both buffers are empty
if (this.videoBuffer_.buffered.length === 0 && this.audioBuffer_.buffered.length === 0) {
return _videoJs2['default'].createTimeRange();
}
// Handle the case where we have both buffers and create an
// intersection of the two
var videoBuffered = this.videoBuffer_.buffered;
var audioBuffered = this.audioBuffer_.buffered;
var count = videoBuffered.length;
// A) Gather up all start and end times
while (count--) {
extents.push({ time: videoBuffered.start(count), type: 'start' });
extents.push({ time: videoBuffered.end(count), type: 'end' });
}
count = audioBuffered.length;
while (count--) {
extents.push({ time: audioBuffered.start(count), type: 'start' });
extents.push({ time: audioBuffered.end(count), type: 'end' });
}
// B) Sort them by time
extents.sort(function (a, b) {
return a.time - b.time;
});
// C) Go along one by one incrementing arity for start and decrementing
// arity for ends
for (count = 0; count < extents.length; count++) {
if (extents[count].type === 'start') {
arity++;
// D) If arity is ever incremented to 2 we are entering an
// overlapping range
if (arity === 2) {
start = extents[count].time;
}
} else if (extents[count].type === 'end') {
arity--;
// E) If arity is ever decremented to 1 we leaving an
// overlapping range
if (arity === 1) {
end = extents[count].time;
}
}
// F) Record overlapping ranges
if (start !== null && end !== null) {
ranges.push([start, end]);
start = null;
end = null;
}
}
return _videoJs2['default'].createTimeRanges(ranges);
}
});
}
/**
* When we get a data event from the transmuxer
* we call this function and handle the data that
* was sent to us
*
* @private
* @param {Event} event the data event from the transmuxer
*/
_createClass(VirtualSourceBuffer, [{
key: 'data_',
value: function data_(event) {
var segment = event.data.segment;
// Cast ArrayBuffer to TypedArray
segment.data = new Uint8Array(segment.data, event.data.byteOffset, event.data.byteLength);
segment.initSegment = new Uint8Array(segment.initSegment.data, segment.initSegment.byteOffset, segment.initSegment.byteLength);
(0, _createTextTracksIfNecessary2['default'])(this, this.mediaSource_, segment);
// Add the segments to the pendingBuffers array
this.pendingBuffers_.push(segment);
return;
}
/**
* When we get a done event from the transmuxer
* we call this function and we process all
* of the pending data that we have been saving in the
* data_ function
*
* @private
* @param {Event} event the done event from the transmuxer
*/
}, {
key: 'done_',
value: function done_(event) {
// Don't process and append data if the mediaSource is closed
if (this.mediaSource_.readyState === 'closed') {
this.pendingBuffers_.length = 0;
return;
}
// All buffers should have been flushed from the muxer
// start processing anything we have received
this.processPendingSegments_();
return;
}
/**
* Create our internal native audio/video source buffers and add
* event handlers to them with the following conditions:
* 1. they do not already exist on the mediaSource
* 2. this VSB has a codec for them
*
* @private
*/
}, {
key: 'createRealSourceBuffers_',
value: function createRealSourceBuffers_() {
var _this2 = this;
var types = ['audio', 'video'];
types.forEach(function (type) {
// Don't create a SourceBuffer of this type if we don't have a
// codec for it
if (!_this2[type + 'Codec_']) {
return;
}
// Do nothing if a SourceBuffer of this type already exists
if (_this2[type + 'Buffer_']) {
return;
}
var buffer = null;
// If the mediasource already has a SourceBuffer for the codec
// use that
if (_this2.mediaSource_[type + 'Buffer_']) {
buffer = _this2.mediaSource_[type + 'Buffer_'];
// In multiple audio track cases, the audio source buffer is disabled
// on the main VirtualSourceBuffer by the HTMLMediaSource much earlier
// than createRealSourceBuffers_ is called to create the second
// VirtualSourceBuffer because that happens as a side-effect of
// videojs-contrib-hls starting the audioSegmentLoader. As a result,
// the audioBuffer is essentially "ownerless" and no one will toggle
// the `updating` state back to false once the `updateend` event is received
//
// Setting `updating` to false manually will work around this
// situation and allow work to continue
buffer.updating = false;
} else {
var codecProperty = type + 'Codec_';
var mimeType = type + '/mp4;codecs="' + _this2[codecProperty] + '"';
buffer = makeWrappedSourceBuffer(_this2.mediaSource_.nativeMediaSource_, mimeType);
_this2.mediaSource_[type + 'Buffer_'] = buffer;
}
_this2[type + 'Buffer_'] = buffer;
// Wire up the events to the SourceBuffer
['update', 'updatestart', 'updateend'].forEach(function (event) {
buffer.addEventListener(event, function () {
// if audio is disabled
if (type === 'audio' && _this2.audioDisabled_) {
return;
}
if (event === 'updateend') {
_this2[type + 'Buffer_'].updating = false;
}
var shouldTrigger = types.every(function (t) {
// skip checking audio's updating status if audio
// is not enabled
if (t === 'audio' && _this2.audioDisabled_) {
return true;
}
// if the other type if updating we don't trigger
if (type !== t && _this2[t + 'Buffer_'] && _this2[t + 'Buffer_'].updating) {
return false;
}
return true;
});
if (shouldTrigger) {
return _this2.trigger(event);
}
});
});
});
}
/**
* Emulate the native mediasource function, but our function will
* send all of the proposed segments to the transmuxer so that we
* can transmux them before we append them to our internal
* native source buffers in the correct format.
*
* @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBuffer
* @param {Uint8Array} segment the segment to append to the buffer
*/
}, {
key: 'appendBuffer',
value: function appendBuffer(segment) {
// Start the internal "updating" state
this.bufferUpdating_ = true;
if (this.audioBuffer_ && this.audioBuffer_.buffered.length) {
var audioBuffered = this.audioBuffer_.buffered;
this.transmuxer_.postMessage({
action: 'setAudioAppendStart',
appendStart: audioBuffered.end(audioBuffered.length - 1)
});
}
if (this.videoBuffer_) {
this.transmuxer_.postMessage({
action: 'alignGopsWith',
gopsToAlignWith: gopsSafeToAlignWith(this.gopBuffer_, this.mediaSource_.player_, this.timeMapping_)
});
}
this.transmuxer_.postMessage({
action: 'push',
// Send the typed-array of data as an ArrayBuffer so that
// it can be sent as a "Transferable" and avoid the costly
// memory copy
data: segment.buffer,
// To recreate the original typed-array, we need information
// about what portion of the ArrayBuffer it was a view into
byteOffset: segment.byteOffset,
byteLength: segment.byteLength
}, [segment.buffer]);
this.transmuxer_.postMessage({ action: 'flush' });
}
/**
* Appends gop information (timing and byteLength) received by the transmuxer for the
* gops appended in the last call to appendBuffer
*
* @param {Event} event
* The gopInfo event from the transmuxer
* @param {Array} event.data.gopInfo
* List of gop info to append
*/
}, {
key: 'appendGopInfo_',
value: function appendGopInfo_(event) {
this.gopBuffer_ = updateGopBuffer(this.gopBuffer_, event.data.gopInfo, this.safeAppend_);
}
/**
* Emulate the native mediasource function and remove parts
* of the buffer from any of our internal buffers that exist
*
* @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/remove
* @param {Double} start position to start the remove at
* @param {Double} end position to end the remove at
*/
}, {
key: 'remove',
value: function remove(start, end) {
if (this.videoBuffer_) {
this.videoBuffer_.updating = true;
this.videoBuffer_.remove(start, end);
this.gopBuffer_ = removeGopBuffer(this.gopBuffer_, start, end, this.timeMapping_);
}
if (!this.audioDisabled_ && this.audioBuffer_) {
this.audioBuffer_.updating = true;
this.audioBuffer_.remove(start, end);
}
// Remove Metadata Cues (id3)
(0, _removeCuesFromTrack2['default'])(start, end, this.metadataTrack_);
// Remove Any Captions
if (this.inbandTextTracks_) {
for (var track in this.inbandTextTracks_) {
(0, _removeCuesFromTrack2['default'])(start, end, this.inbandTextTracks_[track]);
}
}
}
/**
* Process any segments that the muxer has output
* Concatenate segments together based on type and append them into
* their respective sourceBuffers
*
* @private
*/
}, {
key: 'processPendingSegments_',
value: function processPendingSegments_() {
var sortedSegments = {
video: {
segments: [],
bytes: 0
},
audio: {
segments: [],
bytes: 0
},
captions: [],
metadata: []
};
// Sort segments into separate video/audio arrays and
// keep track of their total byte lengths
sortedSegments = this.pendingBuffers_.reduce(function (segmentObj, segment) {
var type = segment.type;
var data = segment.data;
var initSegment = segment.initSegment;
segmentObj[type].segments.push(data);
segmentObj[type].bytes += data.byteLength;
segmentObj[type].initSegment = initSegment;
// Gather any captions into a single array
if (segment.captions) {
segmentObj.captions = segmentObj.captions.concat(segment.captions);
}
if (segment.info) {
segmentObj[type].info = segment.info;
}
// Gather any metadata into a single array
if (segment.metadata) {
segmentObj.metadata = segmentObj.metadata.concat(segment.metadata);
}
return segmentObj;
}, sortedSegments);
// Create the real source buffers if they don't exist by now since we
// finally are sure what tracks are contained in the source
if (!this.videoBuffer_ && !this.audioBuffer_) {
// Remove any codecs that may have been specified by default but
// are no longer applicable now
if (sortedSegments.video.bytes === 0) {
this.videoCodec_ = null;
}
if (sortedSegments.audio.bytes === 0) {
this.audioCodec_ = null;
}
this.createRealSourceBuffers_();
}
if (sortedSegments.audio.info) {
this.mediaSource_.trigger({ type: 'audioinfo', info: sortedSegments.audio.info });
}
if (sortedSegments.video.info) {
this.mediaSource_.trigger({ type: 'videoinfo', info: sortedSegments.video.info });
}
if (this.appendAudioInitSegment_) {
if (!this.audioDisabled_ && this.audioBuffer_) {
sortedSegments.audio.segments.unshift(sortedSegments.audio.initSegment);
sortedSegments.audio.bytes += sortedSegments.audio.initSegment.byteLength;
}
this.appendAudioInitSegment_ = false;
}
var triggerUpdateend = false;
// Merge multiple video and audio segments into one and append
if (this.videoBuffer_ && sortedSegments.video.bytes) {
sortedSegments.video.segments.unshift(sortedSegments.video.initSegment);
sortedSegments.video.bytes += sortedSegments.video.initSegment.byteLength;
this.concatAndAppendSegments_(sortedSegments.video, this.videoBuffer_);
// TODO: are video tracks the only ones with text tracks?
(0, _addTextTrackData.addTextTrackData)(this, sortedSegments.captions, sortedSegments.metadata);
} else if (this.videoBuffer_ && (this.audioDisabled_ || !this.audioBuffer_)) {
// The transmuxer did not return any bytes of video, meaning it was all trimmed
// for gop alignment. Since we have a video buffer and audio is disabled, updateend
// will never be triggered by this source buffer, which will cause contrib-hls
// to be stuck forever waiting for updateend. If audio is not disabled, updateend
// will be triggered by the audio buffer, which will be sent upwards since the video
// buffer will not be in an updating state.
triggerUpdateend = true;
}
if (!this.audioDisabled_ && this.audioBuffer_) {
this.concatAndAppendSegments_(sortedSegments.audio, this.audioBuffer_);
}
this.pendingBuffers_.length = 0;
if (triggerUpdateend) {
this.trigger('updateend');
}
// We are no longer in the internal "updating" state
this.bufferUpdating_ = false;
}
/**
* Combine all segments into a single Uint8Array and then append them
* to the destination buffer
*
* @param {Object} segmentObj
* @param {SourceBuffer} destinationBuffer native source buffer to append data to
* @private
*/
}, {
key: 'concatAndAppendSegments_',
value: function concatAndAppendSegments_(segmentObj, destinationBuffer) {
var offset = 0;
var tempBuffer = undefined;
if (segmentObj.bytes) {
tempBuffer = new Uint8Array(segmentObj.bytes);
// Combine the individual segments into one large typed-array
segmentObj.segments.forEach(function (segment) {
tempBuffer.set(segment, offset);
offset += segment.byteLength;
});
try {
destinationBuffer.updating = true;
destinationBuffer.appendBuffer(tempBuffer);
} catch (error) {
if (this.mediaSource_.player_) {
this.mediaSource_.player_.error({
code: -3,
type: 'APPEND_BUFFER_ERR',
message: error.message,
originalError: error
});
}
}
}
}
/**
* Emulate the native mediasource function. abort any soureBuffer
* actions and throw out any un-appended data.
*
* @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/abort
*/
}, {
key: 'abort',
value: function abort() {
if (this.videoBuffer_) {
this.videoBuffer_.abort();
}
if (!this.audioDisabled_ && this.audioBuffer_) {
this.audioBuffer_.abort();
}
if (this.transmuxer_) {
this.transmuxer_.postMessage({ action: 'reset' });
}
this.pendingBuffers_.length = 0;
this.bufferUpdating_ = false;
}
}]);
return VirtualSourceBuffer;
})(_videoJs2['default'].EventTarget);
exports['default'] = VirtualSourceBuffer;
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./add-text-track-data":35,"./codec-utils":36,"./create-text-tracks-if-necessary":37,"./remove-cues-from-track":43,"./transmuxer-worker":44,"webwackify":34}],47:[function(require,module,exports){
(function (global){
'use strict';
var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
var _qunit = (typeof window !== "undefined" ? window['QUnit'] : typeof global !== "undefined" ? global['QUnit'] : null);
var _qunit2 = _interopRequireDefault(_qunit);
var _srcAddTextTrackData = require('../src/add-text-track-data');
var equal = _qunit2['default'].equal;
var _module = _qunit2['default'].module;
var test = _qunit2['default'].test;
var MockTextTrack = (function () {
function MockTextTrack() {
_classCallCheck(this, MockTextTrack);
this.cues = [];
}
_createClass(MockTextTrack, [{
key: 'addCue',
value: function addCue(cue) {
this.cues.push(cue);
}
}]);
return MockTextTrack;
})();
_module('Text Track Data', {
beforeEach: function beforeEach() {
this.sourceHandler = {
inbandTextTracks_: {
CC1: new MockTextTrack(),
CC2: new MockTextTrack(),
CC3: new MockTextTrack(),
CC4: new MockTextTrack()
},
metadataTrack_: new MockTextTrack(),
mediaSource_: {
duration: NaN
},
timestampOffset: 0
};
}
});
test('does nothing if no cues are specified', function () {
(0, _srcAddTextTrackData.addTextTrackData)(this.sourceHandler, [], []);
equal(this.sourceHandler.inbandTextTracks_.CC1.cues.length, 0, 'added no 608 cues');
equal(this.sourceHandler.metadataTrack_.cues.length, 0, 'added no metadata cues');
});
test('creates cues for 608 captions with "stream" property in ccX', function () {
(0, _srcAddTextTrackData.addTextTrackData)(this.sourceHandler, [{
startTime: 0,
endTime: 1,
text: 'CC1 text',
stream: 'CC1'
}, {
startTime: 0,
endTime: 1,
text: 'CC2 text',
stream: 'CC2'
}, {
startTime: 0,
endTime: 1,
text: 'CC3 text',
stream: 'CC3'
}, {
startTime: 0,
endTime: 1,
text: 'CC4 text',
stream: 'CC4'
}], []);
equal(this.sourceHandler.inbandTextTracks_.CC1.cues.length, 1, 'added one 608 cue to CC1');
equal(this.sourceHandler.inbandTextTracks_.CC2.cues.length, 1, 'added one 608 cue to CC2');
equal(this.sourceHandler.inbandTextTracks_.CC3.cues.length, 1, 'added one 608 cue to CC3');
equal(this.sourceHandler.inbandTextTracks_.CC4.cues.length, 1, 'added one 608 cue to CC4');
equal(this.sourceHandler.metadataTrack_.cues.length, 0, 'added no metadata cues');
});
test('creates cues for timed metadata', function () {
(0, _srcAddTextTrackData.addTextTrackData)(this.sourceHandler, [], [{
cueTime: 1,
frames: [{}]
}]);
equal(this.sourceHandler.inbandTextTracks_.CC1.cues.length, 0, 'added no 608 cues');
equal(this.sourceHandler.metadataTrack_.cues.length, 1, 'added one metadata cues');
});
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../src/add-text-track-data":35}],48:[function(require,module,exports){
(function (global){
'use strict';
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
var _qunit = (typeof window !== "undefined" ? window['QUnit'] : typeof global !== "undefined" ? global['QUnit'] : null);
var _qunit2 = _interopRequireDefault(_qunit);
var _srcCodecUtils = require('../src/codec-utils');
var deepEqual = _qunit2['default'].deepEqual;
var _module = _qunit2['default'].module;
var test = _qunit2['default'].test;
_module('Codec Utils');
test('translates legacy codecs', function () {
deepEqual((0, _srcCodecUtils.translateLegacyCodecs)(['avc1.66.30', 'avc1.66.30']), ['avc1.42001e', 'avc1.42001e'], 'translates legacy avc1.66.30 codec');
deepEqual((0, _srcCodecUtils.translateLegacyCodecs)(['avc1.42C01E', 'avc1.42C01E']), ['avc1.42C01E', 'avc1.42C01E'], 'does not translate modern codecs');
deepEqual((0, _srcCodecUtils.translateLegacyCodecs)(['avc1.42C01E', 'avc1.66.30']), ['avc1.42C01E', 'avc1.42001e'], 'only translates legacy codecs when mixed');
deepEqual((0, _srcCodecUtils.translateLegacyCodecs)(['avc1.4d0020', 'avc1.100.41', 'avc1.77.41', 'avc1.77.32', 'avc1.77.31', 'avc1.77.30', 'avc1.66.30', 'avc1.66.21', 'avc1.42C01e']), ['avc1.4d0020', 'avc1.640029', 'avc1.4d0029', 'avc1.4d0020', 'avc1.4d001f', 'avc1.4d001e', 'avc1.42001e', 'avc1.420015', 'avc1.42C01e'], 'translates a whole bunch');
});
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../src/codec-utils":36}],49:[function(require,module,exports){
(function (global){
'use strict';
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
var _globalDocument = require('global/document');
var _globalDocument2 = _interopRequireDefault(_globalDocument);
var _globalWindow = require('global/window');
var _globalWindow2 = _interopRequireDefault(_globalWindow);
var _qunit = (typeof window !== "undefined" ? window['QUnit'] : typeof global !== "undefined" ? global['QUnit'] : null);
var _qunit2 = _interopRequireDefault(_qunit);
var _sinon = (typeof window !== "undefined" ? window['sinon'] : typeof global !== "undefined" ? global['sinon'] : null);
var _sinon2 = _interopRequireDefault(_sinon);
var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
var _videoJs2 = _interopRequireDefault(_videoJs);
var _srcFlashMediaSource = require('../src/flash-media-source');
var _srcFlashMediaSource2 = _interopRequireDefault(_srcFlashMediaSource);
var _srcHtmlMediaSource = require('../src/html-media-source');
var _srcHtmlMediaSource2 = _interopRequireDefault(_srcHtmlMediaSource);
// we disable this because browserify needs to include these files
// but the exports are not important
/* eslint-disable no-unused-vars */
var _srcVideojsContribMediaSourcesJs = require('../src/videojs-contrib-media-sources.js');
/* eslint-disable no-unused-vars */
_qunit2['default'].module('createObjectURL', {
beforeEach: function beforeEach() {
this.fixture = _globalDocument2['default'].getElementById('qunit-fixture');
this.video = _globalDocument2['default'].createElement('video');
this.fixture.appendChild(this.video);
this.player = (0, _videoJs2['default'])(this.video);
// Mock the environment's timers because certain things - particularly
// player readiness - are asynchronous in video.js 5.
this.clock = _sinon2['default'].useFakeTimers();
this.oldMediaSource = _globalWindow2['default'].MediaSource || _globalWindow2['default'].WebKitMediaSource;
// force MediaSource support
if (!_globalWindow2['default'].MediaSource) {
_globalWindow2['default'].MediaSource = function () {
var result = new _globalWindow2['default'].Blob();
result.addEventListener = function () {};
result.addSourceBuffer = function () {};
return result;
};
}
},
afterEach: function afterEach() {
// The clock _must_ be restored before disposing the player; otherwise,
// certain timeout listeners that happen inside video.js may throw errors.
this.clock.restore();
this.player.dispose();
_globalWindow2['default'].MediaSource = _globalWindow2['default'].WebKitMediaSource = this.oldMediaSource;
}
});
_qunit2['default'].test('delegates to the native implementation', function () {
_qunit2['default'].ok(!/blob:vjs-media-source\//.test(_videoJs2['default'].URL.createObjectURL(new _globalWindow2['default'].Blob())), 'created a native blob URL');
});
_qunit2['default'].test('uses the native MediaSource when available', function () {
_qunit2['default'].ok(!/blob:vjs-media-source\//.test(_videoJs2['default'].URL.createObjectURL(new _srcHtmlMediaSource2['default']())), 'created a native blob URL');
});
_qunit2['default'].test('emulates a URL for the shim', function () {
_qunit2['default'].ok(/blob:vjs-media-source\//.test(_videoJs2['default'].URL.createObjectURL(new _srcFlashMediaSource2['default']())), 'created an emulated blob URL');
});
_qunit2['default'].test('stores the associated blob URL on the media source', function () {
var blob = new _globalWindow2['default'].Blob();
var url = _videoJs2['default'].URL.createObjectURL(blob);
_qunit2['default'].equal(blob.url_, url, 'captured the generated URL');
});
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../src/flash-media-source":39,"../src/html-media-source":42,"../src/videojs-contrib-media-sources.js":45,"global/document":2,"global/window":3}],50:[function(require,module,exports){
(function (global){
'use strict';
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
var _globalDocument = require('global/document');
var _globalDocument2 = _interopRequireDefault(_globalDocument);
var _globalWindow = require('global/window');
var _globalWindow2 = _interopRequireDefault(_globalWindow);
var _qunit = (typeof window !== "undefined" ? window['QUnit'] : typeof global !== "undefined" ? global['QUnit'] : null);
var _qunit2 = _interopRequireDefault(_qunit);
var _sinon = (typeof window !== "undefined" ? window['sinon'] : typeof global !== "undefined" ? global['sinon'] : null);
var _sinon2 = _interopRequireDefault(_sinon);
var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
var _videoJs2 = _interopRequireDefault(_videoJs);
var _muxJs = require('mux.js');
var _muxJs2 = _interopRequireDefault(_muxJs);
var _srcFlashSourceBuffer = require('../src/flash-source-buffer');
var _srcFlashSourceBuffer2 = _interopRequireDefault(_srcFlashSourceBuffer);
var _srcFlashConstants = require('../src/flash-constants');
var _srcFlashConstants2 = _interopRequireDefault(_srcFlashConstants);
// we disable this because browserify needs to include these files
// but the exports are not important
/* eslint-disable no-unused-vars */
var _srcVideojsContribMediaSourcesJs = require('../src/videojs-contrib-media-sources.js');
/* eslint-disable no-unused-vars */
// return the sequence of calls to append to the SWF
var appendCalls = function appendCalls(calls) {
return calls.filter(function (call) {
return call.callee && call.callee === 'vjs_appendChunkReady';
});
};
var getFlvHeader = function getFlvHeader() {
return new Uint8Array([1, 2, 3]);
};
var makeFlvTag = function makeFlvTag(pts, data) {
return {
pts: pts,
dts: pts,
bytes: data
};
};
var timers = undefined;
var oldSTO = undefined;
var fakeSTO = function fakeSTO() {
oldSTO = _globalWindow2['default'].setTimeout;
timers = [];
timers.run = function (num) {
var timer = undefined;
while (num--) {
timer = this.pop();
if (timer) {
timer();
}
}
};
timers.runAll = function () {
while (this.length) {
this.pop()();
}
};
_globalWindow2['default'].setTimeout = function (callback) {
timers.push(callback);
};
_globalWindow2['default'].setTimeout.fake = true;
};
var unfakeSTO = function unfakeSTO() {
timers = [];
_globalWindow2['default'].setTimeout = oldSTO;
};
// Create a WebWorker-style message that signals the transmuxer is done
var createDataMessage = function createDataMessage(data, audioData, metadata, captions) {
var captionStreams = {};
if (captions) {
captions.forEach(function (caption) {
captionStreams[caption.stream] = true;
});
}
return {
data: {
action: 'data',
segment: {
tags: {
videoTags: data.map(function (tag) {
return makeFlvTag(tag.pts, tag.bytes);
}),
audioTags: audioData ? audioData.map(function (tag) {
return makeFlvTag(tag.pts, tag.bytes);
}) : []
},
metadata: metadata,
captions: captions,
captionStreams: captionStreams
}
}
};
};
var doneMessage = {
data: {
action: 'done'
}
};
var postMessage_ = function postMessage_(msg) {
var _this = this;
if (msg.action === 'push') {
_globalWindow2['default'].setTimeout(function () {
_this.onmessage(createDataMessage([{
bytes: new Uint8Array(msg.data, msg.byteOffset, msg.byteLength),
pts: 0
}]));
}, 1);
} else if (msg.action === 'flush') {
_globalWindow2['default'].setTimeout(function () {
_this.onmessage(doneMessage);
}, 1);
}
};
_qunit2['default'].module('Flash MediaSource', {
beforeEach: function beforeEach(assert) {
var _this2 = this;
var swfObj = undefined;
// Mock the environment's timers because certain things - particularly
// player readiness - are asynchronous in video.js 5.
this.clock = _sinon2['default'].useFakeTimers();
this.fixture = _globalDocument2['default'].getElementById('qunit-fixture');
this.video = _globalDocument2['default'].createElement('video');
this.fixture.appendChild(this.video);
this.player = (0, _videoJs2['default'])(this.video);
this.oldMediaSource = _globalWindow2['default'].MediaSource || _globalWindow2['default'].WebKitMediaSource;
_globalWindow2['default'].MediaSource = null;
_globalWindow2['default'].WebKitMediaSource = null;
this.Flash = _videoJs2['default'].getTech('Flash');
this.oldFlashSupport = this.Flash.isSupported;
this.oldCanPlay = this.Flash.canPlaySource;
this.Flash.canPlaySource = this.Flash.isSupported = function () {
return true;
};
this.oldFlashTransmuxerPostMessage = _muxJs2['default'].flv.Transmuxer.postMessage;
this.oldGetFlvHeader = _muxJs2['default'].flv.getFlvHeader;
_muxJs2['default'].flv.getFlvHeader = getFlvHeader;
this.swfCalls = [];
this.mediaSource = new _videoJs2['default'].MediaSource();
this.player.src({
src: _videoJs2['default'].URL.createObjectURL(this.mediaSource),
type: 'video/mp2t'
});
// vjs6 takes 1 tick to set source async
this.clock.tick(1);
swfObj = _globalDocument2['default'].createElement('fake-object');
swfObj.id = 'fake-swf-' + assert.test.testId;
this.player.el().replaceChild(swfObj, this.player.tech_.el());
this.player.tech_.hls = new _videoJs2['default'].EventTarget();
this.player.tech_.el_ = swfObj;
swfObj.tech = this.player.tech_;
/* eslint-disable camelcase */
swfObj.vjs_abort = function () {
_this2.swfCalls.push('abort');
};
swfObj.vjs_getProperty = function (attr) {
if (attr === 'buffered') {
return [];
} else if (attr === 'currentTime') {
return 0;
// ignored for vjs6
} else if (attr === 'videoWidth') {
return 0;
}
_this2.swfCalls.push({ attr: attr });
};
swfObj.vjs_load = function () {
_this2.swfCalls.push('load');
};
swfObj.vjs_setProperty = function (attr, value) {
_this2.swfCalls.push({ attr: attr, value: value });
};
swfObj.vjs_discontinuity = function (attr, value) {
_this2.swfCalls.push({ attr: attr, value: value });
};
swfObj.vjs_appendChunkReady = function (method) {
_globalWindow2['default'].setTimeout(function () {
var chunk = _globalWindow2['default'][method]();
// only care about the segment data, not the flv header
if (method.substr(0, 21) === 'vjs_flashEncodedData_') {
var call = {
callee: 'vjs_appendChunkReady',
arguments: [_globalWindow2['default'].atob(chunk).split('').map(function (c) {
return c.charCodeAt(0);
})]
};
_this2.swfCalls.push(call);
}
}, 1);
};
swfObj.vjs_adjustCurrentTime = function (value) {
_this2.swfCalls.push({ call: 'adjustCurrentTime', value: value });
};
/* eslint-enable camelcase */
this.mediaSource.trigger({
type: 'sourceopen',
swfId: swfObj.id
});
fakeSTO();
},
afterEach: function afterEach() {
_globalWindow2['default'].MediaSource = this.oldMediaSource;
_globalWindow2['default'].WebKitMediaSource = _globalWindow2['default'].MediaSource;
this.Flash.isSupported = this.oldFlashSupport;
this.Flash.canPlaySource = this.oldCanPlay;
_muxJs2['default'].flv.Transmuxer.postMessage = this.oldFlashTransmuxerPostMessage;
_muxJs2['default'].flv.getFlvHeader = this.oldGetFlvHeader;
this.player.dispose();
this.clock.restore();
this.swfCalls = [];
unfakeSTO();
}
});
_qunit2['default'].test('raises an exception for unrecognized MIME types', function () {
try {
this.mediaSource.addSourceBuffer('video/garbage');
} catch (e) {
_qunit2['default'].ok(e, 'an error was thrown');
return;
}
_qunit2['default'].ok(false, 'no error was thrown');
});
_qunit2['default'].test('creates FlashSourceBuffers for video/mp2t', function () {
_qunit2['default'].ok(this.mediaSource.addSourceBuffer('video/mp2t') instanceof _srcFlashSourceBuffer2['default'], 'create source buffer');
});
_qunit2['default'].test('creates FlashSourceBuffers for audio/mp2t', function () {
_qunit2['default'].ok(this.mediaSource.addSourceBuffer('audio/mp2t') instanceof _srcFlashSourceBuffer2['default'], 'create source buffer');
});
_qunit2['default'].test('waits for the next tick to append', function () {
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
sourceBuffer.transmuxer_.postMessage = postMessage_;
_qunit2['default'].equal(this.swfCalls.length, 1, 'made one call on init');
_qunit2['default'].equal(this.swfCalls[0], 'load', 'called load');
sourceBuffer.appendBuffer(new Uint8Array([0, 1]));
this.swfCalls = appendCalls(this.swfCalls);
_qunit2['default'].strictEqual(this.swfCalls.length, 0, 'no appends were made');
});
_qunit2['default'].test('passes bytes to Flash', function () {
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
sourceBuffer.transmuxer_.postMessage = postMessage_;
this.swfCalls.length = 0;
sourceBuffer.appendBuffer(new Uint8Array([0, 1]));
timers.runAll();
timers.runAll();
_qunit2['default'].ok(this.swfCalls.length, 'the SWF was called');
this.swfCalls = appendCalls(this.swfCalls);
_qunit2['default'].strictEqual(this.swfCalls[0].callee, 'vjs_appendChunkReady', 'called vjs_appendChunkReady');
_qunit2['default'].deepEqual(this.swfCalls[0].arguments[0], [0, 1], 'passed the base64 encoded data');
});
_qunit2['default'].test('passes chunked bytes to Flash', function () {
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
var oldChunkSize = _srcFlashConstants2['default'].BYTES_PER_CHUNK;
sourceBuffer.transmuxer_.postMessage = postMessage_;
_srcFlashConstants2['default'].BYTES_PER_CHUNK = 2;
this.swfCalls.length = 0;
sourceBuffer.appendBuffer(new Uint8Array([0, 1, 2, 3, 4]));
timers.runAll();
_qunit2['default'].ok(this.swfCalls.length, 'the SWF was called');
this.swfCalls = appendCalls(this.swfCalls);
_qunit2['default'].equal(this.swfCalls.length, 3, 'the SWF received 3 chunks');
_qunit2['default'].strictEqual(this.swfCalls[0].callee, 'vjs_appendChunkReady', 'called vjs_appendChunkReady');
_qunit2['default'].deepEqual(this.swfCalls[0].arguments[0], [0, 1], 'passed the base64 encoded data');
_qunit2['default'].deepEqual(this.swfCalls[1].arguments[0], [2, 3], 'passed the base64 encoded data');
_qunit2['default'].deepEqual(this.swfCalls[2].arguments[0], [4], 'passed the base64 encoded data');
_srcFlashConstants2['default'].BYTES_PER_CHUNK = oldChunkSize;
});
_qunit2['default'].test('clears the SWF on seeking', function () {
var aborts = 0;
this.mediaSource.addSourceBuffer('video/mp2t');
// track calls to abort()
/* eslint-disable camelcase */
this.mediaSource.swfObj.vjs_abort = function () {
aborts++;
};
/* eslint-enable camelcase */
this.mediaSource.tech_.trigger('seeking');
_qunit2['default'].strictEqual(1, aborts, 'aborted pending buffer');
});
_qunit2['default'].test('drops tags before currentTime when seeking', function () {
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
var i = 10;
var currentTime = undefined;
var tags_ = [];
sourceBuffer.transmuxer_.postMessage = postMessage_;
this.mediaSource.tech_.currentTime = function () {
return currentTime;
};
// push a tag into the buffer to establish the starting PTS value
currentTime = 0;
sourceBuffer.transmuxer_.onmessage(createDataMessage([{
pts: 19 * 1000,
bytes: new Uint8Array(1)
}]));
timers.runAll();
sourceBuffer.appendBuffer(new Uint8Array(10));
timers.runAll();
// mock out a new segment of FLV tags, starting 10s after the
// starting PTS value
while (i--) {
tags_.unshift({
pts: i * 1000 + 29 * 1000,
bytes: new Uint8Array([i])
});
}
var dataMessage = createDataMessage(tags_);
// mock gop start at seek point
dataMessage.data.segment.tags.videoTags[7].keyFrame = true;
sourceBuffer.transmuxer_.onmessage(dataMessage);
// seek to 7 seconds into the new swegment
this.mediaSource.tech_.seeking = function () {
return true;
};
currentTime = 10 + 7;
this.mediaSource.tech_.trigger('seeking');
sourceBuffer.appendBuffer(new Uint8Array(10));
this.swfCalls.length = 0;
timers.runAll();
_qunit2['default'].deepEqual(this.swfCalls[0].arguments[0], [7, 8, 9], 'three tags are appended');
});
_qunit2['default'].test('drops audio and video (complete gops) tags before the buffered end always', function () {
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
var endTime = undefined;
var videoTags_ = [];
var audioTags_ = [];
sourceBuffer.transmuxer_.postMessage = postMessage_;
this.mediaSource.tech_.buffered = function () {
return _videoJs2['default'].createTimeRange([[0, endTime]]);
};
// push a tag into the buffer to establish the starting PTS value
endTime = 0;
// mock buffering 17 seconds of data so flash source buffer internal end of buffer
// tracking is accurate
var i = 17;
while (i--) {
videoTags_.unshift({
pts: i * 1000 + 19 * 1000,
bytes: new Uint8Array(1)
});
}
i = 17;
while (i--) {
audioTags_.unshift({
pts: i * 1000 + 19 * 1000,
bytes: new Uint8Array(1)
});
}
var dataMessage = createDataMessage(videoTags_, audioTags_);
sourceBuffer.transmuxer_.onmessage(dataMessage);
timers.runAll();
sourceBuffer.appendBuffer(new Uint8Array(10));
timers.runAll();
i = 10;
videoTags_ = [];
audioTags_ = [];
// mock out a new segment of FLV tags, starting 10s after the
// starting PTS value
while (i--) {
videoTags_.unshift({
pts: i * 1000 + 29 * 1000,
bytes: new Uint8Array([i])
});
}
i = 10;
while (i--) {
audioTags_.unshift({
pts: i * 1000 + 29 * 1000,
bytes: new Uint8Array([i + 100])
});
}
dataMessage = createDataMessage(videoTags_, audioTags_);
dataMessage.data.segment.tags.videoTags[0].keyFrame = true;
dataMessage.data.segment.tags.videoTags[3].keyFrame = true;
dataMessage.data.segment.tags.videoTags[6].keyFrame = true;
dataMessage.data.segment.tags.videoTags[8].keyFrame = true;
sourceBuffer.transmuxer_.onmessage(dataMessage);
endTime = 10 + 7;
sourceBuffer.appendBuffer(new Uint8Array(10));
this.swfCalls.length = 0;
timers.runAll();
// end of buffer is 17 seconds
// frames 0-6 for video have pts values less than 17 seconds
// since frame 6 is a key frame, it should still be appended to preserve the entire gop
// so we should have appeneded frames 6 - 9
// frames 100-106 for audio have pts values less than 17 seconds
// but since we appended an extra video frame, we should also append audio frames
// to fill in the gap in audio. This means we should be appending audio frames
// 106, 107, 108, 109
// Append order is 6, 7, 107, 8, 108, 9, 109 since we order tags based on dts value
_qunit2['default'].deepEqual(this.swfCalls[0].arguments[0], [6, 106, 7, 107, 8, 108, 9, 109], 'audio and video tags properly dropped');
});
_qunit2['default'].test('seeking into the middle of a GOP adjusts currentTime to the start of the GOP', function () {
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
var i = 10;
var currentTime = undefined;
var tags_ = [];
sourceBuffer.transmuxer_.postMessage = postMessage_;
this.mediaSource.tech_.currentTime = function () {
return currentTime;
};
// push a tag into the buffer to establish the starting PTS value
currentTime = 0;
var dataMessage = createDataMessage([{
pts: 19 * 1000,
bytes: new Uint8Array(1)
}]);
sourceBuffer.transmuxer_.onmessage(dataMessage);
timers.runAll();
sourceBuffer.appendBuffer(new Uint8Array(10));
timers.runAll();
// mock out a new segment of FLV tags, starting 10s after the
// starting PTS value
while (i--) {
tags_.unshift({
pts: i * 1000 + 29 * 1000,
bytes: new Uint8Array([i])
});
}
dataMessage = createDataMessage(tags_);
// mock the GOP structure
dataMessage.data.segment.tags.videoTags[0].keyFrame = true;
dataMessage.data.segment.tags.videoTags[3].keyFrame = true;
dataMessage.data.segment.tags.videoTags[5].keyFrame = true;
dataMessage.data.segment.tags.videoTags[8].keyFrame = true;
sourceBuffer.transmuxer_.onmessage(dataMessage);
// seek to 7 seconds into the new swegment
this.mediaSource.tech_.seeking = function () {
return true;
};
currentTime = 10 + 7;
this.mediaSource.tech_.trigger('seeking');
sourceBuffer.appendBuffer(new Uint8Array(10));
this.swfCalls.length = 0;
timers.runAll();
_qunit2['default'].deepEqual(this.swfCalls[0], { call: 'adjustCurrentTime', value: 15 });
_qunit2['default'].deepEqual(this.swfCalls[1].arguments[0], [5, 6, 7, 8, 9], '5 tags are appended');
});
_qunit2['default'].test('GOP trimming accounts for metadata tags prepended to key frames by mux.js', function () {
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
var i = 10;
var currentTime = undefined;
var tags_ = [];
sourceBuffer.transmuxer_.postMessage = postMessage_;
this.mediaSource.tech_.currentTime = function () {
return currentTime;
};
// push a tag into the buffer to establish the starting PTS value
currentTime = 0;
var dataMessage = createDataMessage([{
pts: 19 * 1000,
bytes: new Uint8Array(1)
}]);
sourceBuffer.transmuxer_.onmessage(dataMessage);
timers.runAll();
sourceBuffer.appendBuffer(new Uint8Array(10));
timers.runAll();
// mock out a new segment of FLV tags, starting 10s after the
// starting PTS value
while (i--) {
tags_.unshift({
pts: i * 1000 + 29 * 1000,
bytes: new Uint8Array([i])
});
}
// add in the metadata tags
tags_.splice(8, 0, {
pts: tags_[8].pts,
bytes: new Uint8Array([8])
}, {
pts: tags_[8].pts,
bytes: new Uint8Array([8])
});
tags_.splice(5, 0, {
pts: tags_[5].pts,
bytes: new Uint8Array([5])
}, {
pts: tags_[5].pts,
bytes: new Uint8Array([5])
});
tags_.splice(0, 0, {
pts: tags_[0].pts,
bytes: new Uint8Array([0])
}, {
pts: tags_[0].pts,
bytes: new Uint8Array([0])
});
dataMessage = createDataMessage(tags_);
// mock the GOP structure + metadata tags
// if we see a metadata tag, that means the next tag will also be a metadata tag with
// keyFrame true and the tag after that will be the keyFrame
// e.g.
// { keyFrame: false, metaDataTag: true},
// { keyFrame: true, metaDataTag: true},
// { keyFrame: true, metaDataTag: false}
dataMessage.data.segment.tags.videoTags[0].metaDataTag = true;
dataMessage.data.segment.tags.videoTags[1].metaDataTag = true;
dataMessage.data.segment.tags.videoTags[1].keyFrame = true;
dataMessage.data.segment.tags.videoTags[2].keyFrame = true;
// no metadata tags in front of this key to test the case where mux.js does not prepend
// the metadata tags
dataMessage.data.segment.tags.videoTags[5].keyFrame = true;
dataMessage.data.segment.tags.videoTags[7].metaDataTag = true;
dataMessage.data.segment.tags.videoTags[8].metaDataTag = true;
dataMessage.data.segment.tags.videoTags[8].keyFrame = true;
dataMessage.data.segment.tags.videoTags[9].keyFrame = true;
dataMessage.data.segment.tags.videoTags[12].metaDataTag = true;
dataMessage.data.segment.tags.videoTags[13].metaDataTag = true;
dataMessage.data.segment.tags.videoTags[13].keyFrame = true;
dataMessage.data.segment.tags.videoTags[14].keyFrame = true;
sourceBuffer.transmuxer_.onmessage(dataMessage);
// seek to 7 seconds into the new swegment
this.mediaSource.tech_.seeking = function () {
return true;
};
currentTime = 10 + 7;
this.mediaSource.tech_.trigger('seeking');
sourceBuffer.appendBuffer(new Uint8Array(10));
this.swfCalls.length = 0;
timers.runAll();
_qunit2['default'].deepEqual(this.swfCalls[0], { call: 'adjustCurrentTime', value: 15 });
_qunit2['default'].deepEqual(this.swfCalls[1].arguments[0], [5, 5, 5, 6, 7, 8, 8, 8, 9], '10 tags are appended, 4 of which are metadata tags');
});
_qunit2['default'].test('drops all tags if target pts append time does not fall within segment', function () {
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
var i = 10;
var currentTime = undefined;
var tags_ = [];
this.mediaSource.tech_.currentTime = function () {
return currentTime;
};
sourceBuffer.transmuxer_.postMessage = postMessage_;
// push a tag into the buffer to establish the starting PTS value
currentTime = 0;
var dataMessage = createDataMessage([{
pts: 19 * 1000,
bytes: new Uint8Array(1)
}]);
sourceBuffer.transmuxer_.onmessage(dataMessage);
timers.runAll();
sourceBuffer.appendBuffer(new Uint8Array(10));
timers.runAll();
// mock out a new segment of FLV tags, starting 10s after the
// starting PTS value
while (i--) {
tags_.unshift({
pts: i * 1000 + 19 * 1000,
bytes: new Uint8Array([i])
});
}
dataMessage = createDataMessage(tags_);
// mock the GOP structure
dataMessage.data.segment.tags.videoTags[0].keyFrame = true;
dataMessage.data.segment.tags.videoTags[3].keyFrame = true;
dataMessage.data.segment.tags.videoTags[5].keyFrame = true;
dataMessage.data.segment.tags.videoTags[8].keyFrame = true;
sourceBuffer.transmuxer_.onmessage(dataMessage);
// seek to 7 seconds into the new swegment
this.mediaSource.tech_.seeking = function () {
return true;
};
currentTime = 10 + 7;
this.mediaSource.tech_.trigger('seeking');
sourceBuffer.appendBuffer(new Uint8Array(10));
this.swfCalls.length = 0;
timers.runAll();
_qunit2['default'].equal(this.swfCalls.length, 0, 'dropped all tags and made no swf calls');
});
_qunit2['default'].test('seek targeting accounts for changing timestampOffsets', function () {
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
var i = 10;
var tags_ = [];
var currentTime = undefined;
this.mediaSource.tech_.currentTime = function () {
return currentTime;
};
sourceBuffer.transmuxer_.postMessage = postMessage_;
var dataMessage = createDataMessage([{
pts: 19 * 1000,
bytes: new Uint8Array(1)
}]);
// push a tag into the buffer to establish the starting PTS value
currentTime = 0;
sourceBuffer.transmuxer_.onmessage(dataMessage);
timers.runAll();
// to seek across a discontinuity:
// 1. set the timestamp offset to the media timeline position for
// the start of the segment
// 2. set currentTime to the desired media timeline position
sourceBuffer.timestampOffset = 22;
currentTime = sourceBuffer.timestampOffset + 3.5;
this.mediaSource.tech_.seeking = function () {
return true;
};
// the new segment FLV tags are at disjoint PTS positions
while (i--) {
tags_.unshift({
// (101 * 1000) !== the old PTS offset
pts: i * 1000 + 101 * 1000,
bytes: new Uint8Array([i + sourceBuffer.timestampOffset])
});
}
dataMessage = createDataMessage(tags_);
// mock gop start at seek point
dataMessage.data.segment.tags.videoTags[3].keyFrame = true;
sourceBuffer.transmuxer_.onmessage(dataMessage);
this.mediaSource.tech_.trigger('seeking');
this.swfCalls.length = 0;
timers.runAll();
_qunit2['default'].equal(this.swfCalls[0].value, 25, 'adjusted current time');
_qunit2['default'].deepEqual(this.swfCalls[1].arguments[0], [25, 26, 27, 28, 29, 30, 31], 'filtered the appended tags');
});
_qunit2['default'].test('calling endOfStream sets mediaSource readyState to ended', function () {
var _this3 = this;
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
sourceBuffer.transmuxer_.postMessage = postMessage_;
/* eslint-disable camelcase */
this.mediaSource.swfObj.vjs_endOfStream = function () {
_this3.swfCalls.push('endOfStream');
};
/* eslint-enable camelcase */
sourceBuffer.addEventListener('updateend', function () {
_this3.mediaSource.endOfStream();
});
this.swfCalls.length = 0;
sourceBuffer.appendBuffer(new Uint8Array([0, 1]));
timers.runAll();
_qunit2['default'].strictEqual(sourceBuffer.mediaSource_.readyState, 'ended', 'readyState is \'ended\'');
_qunit2['default'].strictEqual(this.swfCalls.length, 2, 'made two calls to swf');
_qunit2['default'].deepEqual(this.swfCalls.shift().arguments[0], [0, 1], 'contains the data');
_qunit2['default'].ok(this.swfCalls.shift().indexOf('endOfStream') === 0, 'the second call should be for the updateend');
_qunit2['default'].strictEqual(timers.length, 0, 'no more appends are scheduled');
});
_qunit2['default'].test('opens the stream on sourceBuffer.appendBuffer after endOfStream', function () {
var _this4 = this;
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
var foo = function foo() {
_this4.mediaSource.endOfStream();
sourceBuffer.removeEventListener('updateend', foo);
};
sourceBuffer.transmuxer_.postMessage = postMessage_;
/* eslint-disable camelcase */
this.mediaSource.swfObj.vjs_endOfStream = function () {
_this4.swfCalls.push('endOfStream');
};
/* eslint-enable camelcase */
sourceBuffer.addEventListener('updateend', foo);
this.swfCalls.length = 0;
sourceBuffer.appendBuffer(new Uint8Array([0, 1]));
timers.runAll();
_qunit2['default'].strictEqual(this.swfCalls.length, 2, 'made two calls to swf');
_qunit2['default'].deepEqual(this.swfCalls.shift().arguments[0], [0, 1], 'contains the data');
_qunit2['default'].equal(this.swfCalls.shift(), 'endOfStream', 'the second call should be for the updateend');
sourceBuffer.appendBuffer(new Uint8Array([2, 3]));
// remove previous video pts save because mock appends don't have actual timing data
sourceBuffer.videoBufferEnd_ = NaN;
timers.runAll();
_qunit2['default'].strictEqual(this.swfCalls.length, 1, 'made one more append');
_qunit2['default'].deepEqual(this.swfCalls.shift().arguments[0], [2, 3], 'contains the third and fourth bytes');
_qunit2['default'].strictEqual(sourceBuffer.mediaSource_.readyState, 'open', 'The streams should be open if more bytes are appended to an "ended" stream');
_qunit2['default'].strictEqual(timers.length, 0, 'no more appends are scheduled');
});
_qunit2['default'].test('abort() clears any buffered input', function () {
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
sourceBuffer.transmuxer_.postMessage = postMessage_;
this.swfCalls.length = 0;
sourceBuffer.appendBuffer(new Uint8Array([0]));
sourceBuffer.abort();
timers.pop()();
_qunit2['default'].strictEqual(this.swfCalls.length, 1, 'called the swf');
_qunit2['default'].strictEqual(this.swfCalls[0], 'abort', 'invoked abort');
});
// requestAnimationFrame is heavily throttled or unscheduled when
// the browser tab running contrib-media-sources is in a background
// tab. If that happens, video data can continuously build up in
// memory and cause the tab or browser to crash.
_qunit2['default'].test('does not use requestAnimationFrame', function () {
var oldRFA = _globalWindow2['default'].requestAnimationFrame;
var requests = 0;
var sourceBuffer = undefined;
_globalWindow2['default'].requestAnimationFrame = function () {
requests++;
};
sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
sourceBuffer.transmuxer_.postMessage = postMessage_;
sourceBuffer.appendBuffer(new Uint8Array([0, 1, 2, 3]));
while (timers.length) {
timers.pop()();
}
_qunit2['default'].equal(requests, 0, 'no calls to requestAnimationFrame were made');
_globalWindow2['default'].requestAnimationFrame = oldRFA;
});
_qunit2['default'].test('updating is true while an append is in progress', function () {
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
var ended = false;
sourceBuffer.transmuxer_.postMessage = postMessage_;
sourceBuffer.addEventListener('updateend', function () {
ended = true;
});
sourceBuffer.appendBuffer(new Uint8Array([0, 1]));
_qunit2['default'].equal(sourceBuffer.updating, true, 'updating is set');
while (!ended) {
timers.pop()();
}
_qunit2['default'].equal(sourceBuffer.updating, false, 'updating is unset');
});
_qunit2['default'].test('throws an error if append is called while updating', function () {
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
sourceBuffer.appendBuffer(new Uint8Array([0, 1]));
sourceBuffer.transmuxer_.postMessage = postMessage_;
_qunit2['default'].throws(function () {
sourceBuffer.appendBuffer(new Uint8Array([0, 1]));
}, function (e) {
return e.name === 'InvalidStateError' && e.code === _globalWindow2['default'].DOMException.INVALID_STATE_ERR;
}, 'threw an InvalidStateError');
});
_qunit2['default'].test('stops updating if abort is called', function () {
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
var updateEnds = 0;
sourceBuffer.transmuxer_.postMessage = postMessage_;
sourceBuffer.addEventListener('updateend', function () {
updateEnds++;
});
sourceBuffer.appendBuffer(new Uint8Array([0, 1]));
sourceBuffer.abort();
_qunit2['default'].equal(sourceBuffer.updating, false, 'no longer updating');
_qunit2['default'].equal(updateEnds, 1, 'triggered updateend');
});
_qunit2['default'].test('forwards duration overrides to the SWF', function () {
/* eslint-disable no-unused-vars */
var ignored = this.mediaSource.duration;
/* eslint-enable no-unused-vars */
_qunit2['default'].deepEqual(this.swfCalls[1], {
attr: 'duration'
}, 'requests duration from the SWF');
this.mediaSource.duration = 101.3;
// Setting a duration results in two calls to the swf
// Ignore the first call (this.swfCalls[2]) as it was just to get the
// current duration
_qunit2['default'].deepEqual(this.swfCalls[3], {
attr: 'duration', value: 101.3
}, 'set the duration override');
});
_qunit2['default'].test('returns NaN for duration before the SWF is ready', function () {
this.mediaSource.swfObj = null;
_qunit2['default'].ok(isNaN(this.mediaSource.duration), 'duration is NaN');
});
_qunit2['default'].test('calculates the base PTS for the media', function () {
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
var tags_ = [];
sourceBuffer.transmuxer_.postMessage = postMessage_;
// seek to 15 seconds
this.player.tech_.seeking = function () {
return true;
};
this.player.tech_.currentTime = function () {
return 15;
};
// FLV tags for this segment start at 10 seconds in the media
// timeline
tags_.push(
// zero in the media timeline is PTS 3
{ pts: (10 + 3) * 1000, bytes: new Uint8Array([10]) }, { pts: (15 + 3) * 1000, bytes: new Uint8Array([15]) });
var dataMessage = createDataMessage(tags_);
// mock gop start at seek point
dataMessage.data.segment.tags.videoTags[1].keyFrame = true;
sourceBuffer.transmuxer_.onmessage(dataMessage);
// let the source buffer know the segment start time
sourceBuffer.timestampOffset = 10;
this.swfCalls.length = 0;
timers.runAll();
_qunit2['default'].equal(this.swfCalls.length, 1, 'made a SWF call');
_qunit2['default'].deepEqual(this.swfCalls[0].arguments[0], [15], 'dropped the early tag');
});
_qunit2['default'].test('remove fires update events', function () {
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
var events = [];
sourceBuffer.transmuxer_.postMessage = postMessage_;
sourceBuffer.on(['update', 'updateend'], function (event) {
events.push(event.type);
});
sourceBuffer.remove(0, 1);
_qunit2['default'].deepEqual(events, ['update', 'updateend'], 'fired update events');
_qunit2['default'].equal(sourceBuffer.updating, false, 'finished updating');
});
_qunit2['default'].test('passes endOfStream network errors to the tech', function () {
this.mediaSource.readyState = 'ended';
this.mediaSource.endOfStream('network');
_qunit2['default'].equal(this.player.tech_.error().code, 2, 'set a network error');
});
_qunit2['default'].test('passes endOfStream decode errors to the tech', function () {
this.mediaSource.readyState = 'ended';
this.mediaSource.endOfStream('decode');
_qunit2['default'].equal(this.player.tech_.error().code, 3, 'set a decode error');
});
_qunit2['default'].test('has addSeekableRange()', function () {
_qunit2['default'].ok(this.mediaSource.addSeekableRange_, 'has addSeekableRange_');
});
_qunit2['default'].test('fires loadedmetadata after first segment append', function () {
var loadedmetadataCount = 0;
this.mediaSource.tech_.on('loadedmetadata', function () {
return loadedmetadataCount++;
});
var sourceBuffer = this.mediaSource.addSourceBuffer('video/mp2t');
sourceBuffer.transmuxer_.postMessage = postMessage_;
_qunit2['default'].equal(loadedmetadataCount, 0, 'loadedmetadata not called on buffer creation');
sourceBuffer.appendBuffer(new Uint8Array([0, 1]));
_qunit2['default'].equal(loadedmetadataCount, 0, 'loadedmetadata not called on segment append');
timers.runAll();
_qunit2['default'].equal(loadedmetadataCount, 1, 'loadedmetadata fires after first append');
sourceBuffer.appendBuffer(new Uint8Array([0, 1]));
timers.runAll();
_qunit2['default'].equal(loadedmetadataCount, 1, 'loadedmetadata does not fire after second append');
});
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../src/flash-constants":38,"../src/flash-source-buffer":40,"../src/videojs-contrib-media-sources.js":45,"global/document":2,"global/window":3,"mux.js":16}],51:[function(require,module,exports){
(function (global){
'use strict';
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
var _globalDocument = require('global/document');
var _globalDocument2 = _interopRequireDefault(_globalDocument);
var _globalWindow = require('global/window');
var _globalWindow2 = _interopRequireDefault(_globalWindow);
var _qunit = (typeof window !== "undefined" ? window['QUnit'] : typeof global !== "undefined" ? global['QUnit'] : null);
var _qunit2 = _interopRequireDefault(_qunit);
var _sinon = (typeof window !== "undefined" ? window['sinon'] : typeof global !== "undefined" ? global['sinon'] : null);
var _sinon2 = _interopRequireDefault(_sinon);
var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
var _videoJs2 = _interopRequireDefault(_videoJs);
var _srcHtmlMediaSource = require('../src/html-media-source');
var _srcHtmlMediaSource2 = _interopRequireDefault(_srcHtmlMediaSource);
var _srcVirtualSourceBuffer = require('../src/virtual-source-buffer');
// we disable this because browserify needs to include these files
// but the exports are not important
/* eslint-disable no-unused-vars */
var _srcVideojsContribMediaSourcesJs = require('../src/videojs-contrib-media-sources.js');
/* eslint-disable no-unused-vars */
_qunit2['default'].module('videojs-contrib-media-sources - HTML', {
beforeEach: function beforeEach() {
this.fixture = _globalDocument2['default'].getElementById('qunit-fixture');
this.video = _globalDocument2['default'].createElement('video');
this.fixture.appendChild(this.video);
this.source = _globalDocument2['default'].createElement('source');
this.player = (0, _videoJs2['default'])(this.video);
// add a fake source so that we can get this.player_ on sourceopen
this.url = 'fake.ts';
this.source.src = this.url;
this.video.appendChild(this.source);
// Mock the environment's timers because certain things - particularly
// player readiness - are asynchronous in video.js 5.
this.clock = _sinon2['default'].useFakeTimers();
this.oldMediaSource = _globalWindow2['default'].MediaSource || _globalWindow2['default'].WebKitMediaSource;
_globalWindow2['default'].MediaSource = _videoJs2['default'].extend(_videoJs2['default'].EventTarget, {
constructor: function constructor() {
this.isNative = true;
this.sourceBuffers = [];
this.duration = NaN;
},
addSourceBuffer: function addSourceBuffer(type) {
var buffer = new (_videoJs2['default'].extend(_videoJs2['default'].EventTarget, {
type: type,
appendBuffer: function appendBuffer() {}
}))();
this.sourceBuffers.push(buffer);
return buffer;
}
});
_globalWindow2['default'].MediaSource.isTypeSupported = function (mime) {
return true;
};
_globalWindow2['default'].WebKitMediaSource = _globalWindow2['default'].MediaSource;
},
afterEach: function afterEach() {
this.clock.restore();
this.player.dispose();
_globalWindow2['default'].MediaSource = this.oldMediaSource;
_globalWindow2['default'].WebKitMediaSource = _globalWindow2['default'].MediaSource;
}
});
_qunit2['default'].test('constructs a native MediaSource', function () {
_qunit2['default'].ok(new _videoJs2['default'].MediaSource().nativeMediaSource_.isNative, 'constructed a MediaSource');
});
var createDataMessage = function createDataMessage(type, typedArray, extraObject) {
var message = {
data: {
action: 'data',
segment: {
type: type,
data: typedArray.buffer,
initSegment: {
data: typedArray.buffer,
byteOffset: typedArray.byteOffset,
byteLength: typedArray.byteLength
}
},
byteOffset: typedArray.byteOffset,
byteLength: typedArray.byteLength
}
};
return Object.keys(extraObject || {}).reduce(function (obj, key) {
obj.data.segment[key] = extraObject[key];
return obj;
}, message);
};
// Create a WebWorker-style message that signals the transmuxer is done
var doneMessage = {
data: {
action: 'done'
}
};
// send fake data to the transmuxer to trigger the creation of the
// native source buffers
var initializeNativeSourceBuffers = function initializeNativeSourceBuffers(sourceBuffer) {
// initialize an audio source buffer
sourceBuffer.transmuxer_.onmessage(createDataMessage('audio', new Uint8Array(1)));
// initialize a video source buffer
sourceBuffer.transmuxer_.onmessage(createDataMessage('video', new Uint8Array(1)));
// instruct the transmuxer to flush the "data" it has buffered so
// far
sourceBuffer.transmuxer_.onmessage(doneMessage);
};
_qunit2['default'].test('creates mp4 source buffers for mp2t segments', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
initializeNativeSourceBuffers(sourceBuffer);
_qunit2['default'].ok(mediaSource.videoBuffer_, 'created a video buffer');
_qunit2['default'].equal(mediaSource.videoBuffer_.type, 'video/mp4;codecs="avc1.4d400d"', 'video buffer has the default codec');
_qunit2['default'].ok(mediaSource.audioBuffer_, 'created an audio buffer');
_qunit2['default'].equal(mediaSource.audioBuffer_.type, 'audio/mp4;codecs="mp4a.40.2"', 'audio buffer has the default codec');
_qunit2['default'].equal(mediaSource.sourceBuffers.length, 1, 'created one virtual buffer');
_qunit2['default'].equal(mediaSource.sourceBuffers[0], sourceBuffer, 'returned the virtual buffer');
_qunit2['default'].ok(sourceBuffer.transmuxer_, 'created a transmuxer');
});
_qunit2['default'].test('the terminate is called on the transmuxer when the media source is killed', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
var terminates = 0;
sourceBuffer.transmuxer_ = {
terminate: function terminate() {
terminates++;
}
};
mediaSource.trigger('sourceclose');
_qunit2['default'].equal(terminates, 1, 'called terminate on transmux web worker');
});
_qunit2['default'].test('duration is faked when playing a live stream', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
mediaSource.duration = Infinity;
mediaSource.nativeMediaSource_.duration = 100;
_qunit2['default'].equal(mediaSource.nativeMediaSource_.duration, 100, 'native duration was not set to infinity');
_qunit2['default'].equal(mediaSource.duration, Infinity, 'the MediaSource wrapper pretends it has an infinite duration');
});
_qunit2['default'].test('duration uses the underlying MediaSource\'s duration when not live', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
mediaSource.duration = 100;
mediaSource.nativeMediaSource_.duration = 120;
_qunit2['default'].equal(mediaSource.duration, 120, 'the MediaSource wrapper returns the native duration');
});
_qunit2['default'].test('abort on the fake source buffer calls abort on the real ones', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
var messages = [];
var aborts = 0;
initializeNativeSourceBuffers(sourceBuffer);
sourceBuffer.transmuxer_.postMessage = function (message) {
messages.push(message);
};
sourceBuffer.bufferUpdating_ = true;
sourceBuffer.videoBuffer_.abort = function () {
aborts++;
};
sourceBuffer.audioBuffer_.abort = function () {
aborts++;
};
sourceBuffer.abort();
_qunit2['default'].equal(aborts, 2, 'called abort on both');
_qunit2['default'].equal(sourceBuffer.bufferUpdating_, false, 'set updating to false');
_qunit2['default'].equal(messages.length, 1, 'has one message');
_qunit2['default'].equal(messages[0].action, 'reset', 'reset called on transmuxer');
});
_qunit2['default'].test('calling remove deletes cues and invokes remove on any extant source buffers', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
var removedCue = [];
var removes = 0;
initializeNativeSourceBuffers(sourceBuffer);
sourceBuffer.inbandTextTracks_ = {
CC1: {
removeCue: function removeCue(cue) {
removedCue.push(cue);
this.cues.splice(this.cues.indexOf(cue), 1);
},
cues: [{ startTime: 10, endTime: 20, text: 'delete me' }, { startTime: 0, endTime: 2, text: 'save me' }]
}
};
mediaSource.videoBuffer_.remove = function (start, end) {
if (start === 3 && end === 10) {
removes++;
}
};
mediaSource.audioBuffer_.remove = function (start, end) {
if (start === 3 && end === 10) {
removes++;
}
};
sourceBuffer.remove(3, 10);
_qunit2['default'].equal(removes, 2, 'called remove on both sourceBuffers');
_qunit2['default'].equal(sourceBuffer.inbandTextTracks_.CC1.cues.length, 1, 'one cue remains after remove');
_qunit2['default'].equal(removedCue[0].text, 'delete me', 'the cue that overlapped the remove region was removed');
});
_qunit2['default'].test('calling remove property handles absence of cues (null)', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
initializeNativeSourceBuffers(sourceBuffer);
sourceBuffer.inbandTextTracks_ = {
CC1: {
cues: null
}
};
mediaSource.videoBuffer_.remove = function (start, end) {
// pass
};
mediaSource.audioBuffer_.remove = function (start, end) {
// pass
};
// this call should not raise an exception
sourceBuffer.remove(3, 10);
_qunit2['default'].equal(sourceBuffer.inbandTextTracks_.CC1.cues, null, 'cues are still null');
});
_qunit2['default'].test('removing doesn\'t happen with audio disabled', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var muxedBuffer = mediaSource.addSourceBuffer('video/mp2t');
// creating this audio buffer disables audio in the muxed one
var audioBuffer = mediaSource.addSourceBuffer('audio/mp2t; codecs="mp4a.40.2"');
var removedCue = [];
var removes = 0;
initializeNativeSourceBuffers(muxedBuffer);
muxedBuffer.inbandTextTracks_ = {
CC1: {
removeCue: function removeCue(cue) {
removedCue.push(cue);
this.cues.splice(this.cues.indexOf(cue), 1);
},
cues: [{ startTime: 10, endTime: 20, text: 'delete me' }, { startTime: 0, endTime: 2, text: 'save me' }]
}
};
mediaSource.videoBuffer_.remove = function (start, end) {
if (start === 3 && end === 10) {
removes++;
}
};
mediaSource.audioBuffer_.remove = function (start, end) {
if (start === 3 && end === 10) {
removes++;
}
};
muxedBuffer.remove(3, 10);
_qunit2['default'].equal(removes, 1, 'called remove on only one source buffer');
_qunit2['default'].equal(muxedBuffer.inbandTextTracks_.CC1.cues.length, 1, 'one cue remains after remove');
_qunit2['default'].equal(removedCue[0].text, 'delete me', 'the cue that overlapped the remove region was removed');
});
_qunit2['default'].test('readyState delegates to the native implementation', function () {
var mediaSource = new _srcHtmlMediaSource2['default']();
_qunit2['default'].equal(mediaSource.readyState, mediaSource.nativeMediaSource_.readyState, 'readyStates are equal');
mediaSource.nativeMediaSource_.readyState = 'nonsense stuff';
_qunit2['default'].equal(mediaSource.readyState, mediaSource.nativeMediaSource_.readyState, 'readyStates are equal');
});
_qunit2['default'].test('addSeekableRange_ throws an error for media with known duration', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
mediaSource.duration = 100;
_qunit2['default'].throws(function () {
mediaSource.addSeekableRange_(0, 100);
}, 'cannot add seekable range');
});
_qunit2['default'].test('addSeekableRange_ adds to the native MediaSource duration', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
mediaSource.duration = Infinity;
mediaSource.addSeekableRange_(120, 240);
_qunit2['default'].equal(mediaSource.nativeMediaSource_.duration, 240, 'set native duration');
_qunit2['default'].equal(mediaSource.duration, Infinity, 'emulated duration');
mediaSource.addSeekableRange_(120, 220);
_qunit2['default'].equal(mediaSource.nativeMediaSource_.duration, 240, 'ignored the smaller range');
_qunit2['default'].equal(mediaSource.duration, Infinity, 'emulated duration');
});
_qunit2['default'].test('appendBuffer error triggers on the player', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
var error = false;
mediaSource.player_ = this.player;
initializeNativeSourceBuffers(sourceBuffer);
sourceBuffer.videoBuffer_.appendBuffer = function () {
throw new Error();
};
this.player.on('error', function () {
return error = true;
});
// send fake data to the source buffer from the transmuxer to append to native buffer
// initializeNativeSourceBuffers does the same thing to trigger the creation of
// native source buffers.
var fakeTransmuxerMessage = initializeNativeSourceBuffers;
fakeTransmuxerMessage(sourceBuffer);
this.clock.tick(1);
_qunit2['default'].ok(error, 'error triggered on player');
});
_qunit2['default'].test('transmuxes mp2t segments', function () {
var mp2tSegments = [];
var mp4Segments = [];
var data = new Uint8Array(1);
var mediaSource = undefined;
var sourceBuffer = undefined;
mediaSource = new _videoJs2['default'].MediaSource();
sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
sourceBuffer.transmuxer_.postMessage = function (segment) {
if (segment.action === 'push') {
var buffer = new Uint8Array(segment.data, segment.byteOffset, segment.byteLength);
mp2tSegments.push(buffer);
}
};
sourceBuffer.concatAndAppendSegments_ = function (segmentObj, destinationBuffer) {
mp4Segments.push(segmentObj);
};
sourceBuffer.appendBuffer(data);
_qunit2['default'].equal(mp2tSegments.length, 1, 'transmuxed one segment');
_qunit2['default'].equal(mp2tSegments[0].length, 1, 'did not alter the segment');
_qunit2['default'].equal(mp2tSegments[0][0], data[0], 'did not alter the segment');
// an init segment
sourceBuffer.transmuxer_.onmessage(createDataMessage('video', new Uint8Array(1)));
// a media segment
sourceBuffer.transmuxer_.onmessage(createDataMessage('audio', new Uint8Array(1)));
// Segments are concatenated
_qunit2['default'].equal(mp4Segments.length, 0, 'segments are not appended until after the `done` message');
// send `done` message
sourceBuffer.transmuxer_.onmessage(doneMessage);
// Segments are concatenated
_qunit2['default'].equal(mp4Segments.length, 2, 'appended the segments');
});
_qunit2['default'].test('handles typed-arrays that are subsets of their underlying buffer', function () {
var mp2tSegments = [];
var mp4Segments = [];
var dataBuffer = new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
var data = dataBuffer.subarray(5, 7);
var mediaSource = undefined;
var sourceBuffer = undefined;
mediaSource = new _videoJs2['default'].MediaSource();
sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
sourceBuffer.transmuxer_.postMessage = function (segment) {
if (segment.action === 'push') {
var buffer = new Uint8Array(segment.data, segment.byteOffset, segment.byteLength);
mp2tSegments.push(buffer);
}
};
sourceBuffer.concatAndAppendSegments_ = function (segmentObj, destinationBuffer) {
mp4Segments.push(segmentObj.segments[0]);
};
sourceBuffer.appendBuffer(data);
_qunit2['default'].equal(mp2tSegments.length, 1, 'emitted the fragment');
_qunit2['default'].equal(mp2tSegments[0].length, 2, 'correctly handled a typed-array that is a subset');
_qunit2['default'].equal(mp2tSegments[0][0], 5, 'fragment contains the correct first byte');
_qunit2['default'].equal(mp2tSegments[0][1], 6, 'fragment contains the correct second byte');
// an init segment
sourceBuffer.transmuxer_.onmessage(createDataMessage('video', data));
// Segments are concatenated
_qunit2['default'].equal(mp4Segments.length, 0, 'segments are not appended until after the `done` message');
// send `done` message
sourceBuffer.transmuxer_.onmessage(doneMessage);
// Segments are concatenated
_qunit2['default'].equal(mp4Segments.length, 1, 'emitted the fragment');
_qunit2['default'].equal(mp4Segments[0].length, 2, 'correctly handled a typed-array that is a subset');
_qunit2['default'].equal(mp4Segments[0][0], 5, 'fragment contains the correct first byte');
_qunit2['default'].equal(mp4Segments[0][1], 6, 'fragment contains the correct second byte');
});
_qunit2['default'].test('only appends audio init segment for first segment or on audio/media changes', function () {
var mp4Segments = [];
var initBuffer = new Uint8Array([0, 1]);
var dataBuffer = new Uint8Array([2, 3]);
var mediaSource = undefined;
var sourceBuffer = undefined;
mediaSource = new _videoJs2['default'].MediaSource();
sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
sourceBuffer.audioDisabled_ = false;
mediaSource.player_ = this.player;
mediaSource.url_ = this.url;
mediaSource.trigger('sourceopen');
sourceBuffer.concatAndAppendSegments_ = function (segmentObj, destinationBuffer) {
var segment = segmentObj.segments.reduce(function (seg, arr) {
return seg.concat(Array.from(arr));
}, []);
mp4Segments.push(segment);
};
_qunit2['default'].ok(sourceBuffer.appendAudioInitSegment_, 'will append init segment next');
// an init segment
sourceBuffer.transmuxer_.onmessage(createDataMessage('audio', dataBuffer, {
initSegment: {
data: initBuffer.buffer,
byteOffset: initBuffer.byteOffset,
byteLength: initBuffer.byteLength
}
}));
// Segments are concatenated
_qunit2['default'].equal(mp4Segments.length, 0, 'segments are not appended until after the `done` message');
// send `done` message
sourceBuffer.transmuxer_.onmessage(doneMessage);
// Segments are concatenated
_qunit2['default'].equal(mp4Segments.length, 1, 'emitted the fragment');
// Contains init segment on first segment
_qunit2['default'].equal(mp4Segments[0][0], 0, 'fragment contains the correct first byte');
_qunit2['default'].equal(mp4Segments[0][1], 1, 'fragment contains the correct second byte');
_qunit2['default'].equal(mp4Segments[0][2], 2, 'fragment contains the correct third byte');
_qunit2['default'].equal(mp4Segments[0][3], 3, 'fragment contains the correct fourth byte');
_qunit2['default'].ok(!sourceBuffer.appendAudioInitSegment_, 'will not append init segment next');
dataBuffer = new Uint8Array([4, 5]);
sourceBuffer.transmuxer_.onmessage(createDataMessage('audio', dataBuffer, {
initSegment: {
data: initBuffer.buffer,
byteOffset: initBuffer.byteOffset,
byteLength: initBuffer.byteLength
}
}));
sourceBuffer.transmuxer_.onmessage(doneMessage);
_qunit2['default'].equal(mp4Segments.length, 2, 'emitted the fragment');
// does not contain init segment on next segment
_qunit2['default'].equal(mp4Segments[1][0], 4, 'fragment contains the correct first byte');
_qunit2['default'].equal(mp4Segments[1][1], 5, 'fragment contains the correct second byte');
// audio track change
this.player.audioTracks().trigger('change');
sourceBuffer.audioDisabled_ = false;
_qunit2['default'].ok(sourceBuffer.appendAudioInitSegment_, 'audio change sets appendAudioInitSegment_');
dataBuffer = new Uint8Array([6, 7]);
sourceBuffer.transmuxer_.onmessage(createDataMessage('audio', dataBuffer, {
initSegment: {
data: initBuffer.buffer,
byteOffset: initBuffer.byteOffset,
byteLength: initBuffer.byteLength
}
}));
sourceBuffer.transmuxer_.onmessage(doneMessage);
_qunit2['default'].equal(mp4Segments.length, 3, 'emitted the fragment');
// contains init segment after audio track change
_qunit2['default'].equal(mp4Segments[2][0], 0, 'fragment contains the correct first byte');
_qunit2['default'].equal(mp4Segments[2][1], 1, 'fragment contains the correct second byte');
_qunit2['default'].equal(mp4Segments[2][2], 6, 'fragment contains the correct third byte');
_qunit2['default'].equal(mp4Segments[2][3], 7, 'fragment contains the correct fourth byte');
_qunit2['default'].ok(!sourceBuffer.appendAudioInitSegment_, 'will not append init segment next');
dataBuffer = new Uint8Array([8, 9]);
sourceBuffer.transmuxer_.onmessage(createDataMessage('audio', dataBuffer, {
initSegment: {
data: initBuffer.buffer,
byteOffset: initBuffer.byteOffset,
byteLength: initBuffer.byteLength
}
}));
sourceBuffer.transmuxer_.onmessage(doneMessage);
_qunit2['default'].equal(mp4Segments.length, 4, 'emitted the fragment');
// does not contain init segment in next segment
_qunit2['default'].equal(mp4Segments[3][0], 8, 'fragment contains the correct first byte');
_qunit2['default'].equal(mp4Segments[3][1], 9, 'fragment contains the correct second byte');
_qunit2['default'].ok(!sourceBuffer.appendAudioInitSegment_, 'will not append init segment next');
// rendition switch
this.player.trigger('mediachange');
_qunit2['default'].ok(sourceBuffer.appendAudioInitSegment_, 'media change sets appendAudioInitSegment_');
dataBuffer = new Uint8Array([10, 11]);
sourceBuffer.transmuxer_.onmessage(createDataMessage('audio', dataBuffer, {
initSegment: {
data: initBuffer.buffer,
byteOffset: initBuffer.byteOffset,
byteLength: initBuffer.byteLength
}
}));
sourceBuffer.transmuxer_.onmessage(doneMessage);
_qunit2['default'].equal(mp4Segments.length, 5, 'emitted the fragment');
// contains init segment after audio track change
_qunit2['default'].equal(mp4Segments[4][0], 0, 'fragment contains the correct first byte');
_qunit2['default'].equal(mp4Segments[4][1], 1, 'fragment contains the correct second byte');
_qunit2['default'].equal(mp4Segments[4][2], 10, 'fragment contains the correct third byte');
_qunit2['default'].equal(mp4Segments[4][3], 11, 'fragment contains the correct fourth byte');
_qunit2['default'].ok(!sourceBuffer.appendAudioInitSegment_, 'will not append init segment next');
});
_qunit2['default'].test('appends video init segment for every segment', function () {
var mp4Segments = [];
var initBuffer = new Uint8Array([0, 1]);
var dataBuffer = new Uint8Array([2, 3]);
var mediaSource = undefined;
var sourceBuffer = undefined;
mediaSource = new _videoJs2['default'].MediaSource();
sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
mediaSource.player_ = this.player;
mediaSource.url_ = this.url;
mediaSource.trigger('sourceopen');
sourceBuffer.concatAndAppendSegments_ = function (segmentObj, destinationBuffer) {
var segment = segmentObj.segments.reduce(function (seg, arr) {
return seg.concat(Array.from(arr));
}, []);
mp4Segments.push(segment);
};
// an init segment
sourceBuffer.transmuxer_.onmessage(createDataMessage('video', dataBuffer, {
initSegment: {
data: initBuffer.buffer,
byteOffset: initBuffer.byteOffset,
byteLength: initBuffer.byteLength
}
}));
// Segments are concatenated
_qunit2['default'].equal(mp4Segments.length, 0, 'segments are not appended until after the `done` message');
// send `done` message
sourceBuffer.transmuxer_.onmessage(doneMessage);
// Segments are concatenated
_qunit2['default'].equal(mp4Segments.length, 1, 'emitted the fragment');
// Contains init segment on first segment
_qunit2['default'].equal(mp4Segments[0][0], 0, 'fragment contains the correct first byte');
_qunit2['default'].equal(mp4Segments[0][1], 1, 'fragment contains the correct second byte');
_qunit2['default'].equal(mp4Segments[0][2], 2, 'fragment contains the correct third byte');
_qunit2['default'].equal(mp4Segments[0][3], 3, 'fragment contains the correct fourth byte');
dataBuffer = new Uint8Array([4, 5]);
sourceBuffer.transmuxer_.onmessage(createDataMessage('video', dataBuffer, {
initSegment: {
data: initBuffer.buffer,
byteOffset: initBuffer.byteOffset,
byteLength: initBuffer.byteLength
}
}));
sourceBuffer.transmuxer_.onmessage(doneMessage);
_qunit2['default'].equal(mp4Segments.length, 2, 'emitted the fragment');
_qunit2['default'].equal(mp4Segments[1][0], 0, 'fragment contains the correct first byte');
_qunit2['default'].equal(mp4Segments[1][1], 1, 'fragment contains the correct second byte');
_qunit2['default'].equal(mp4Segments[1][2], 4, 'fragment contains the correct third byte');
_qunit2['default'].equal(mp4Segments[1][3], 5, 'fragment contains the correct fourth byte');
dataBuffer = new Uint8Array([6, 7]);
sourceBuffer.transmuxer_.onmessage(createDataMessage('video', dataBuffer, {
initSegment: {
data: initBuffer.buffer,
byteOffset: initBuffer.byteOffset,
byteLength: initBuffer.byteLength
}
}));
sourceBuffer.transmuxer_.onmessage(doneMessage);
_qunit2['default'].equal(mp4Segments.length, 3, 'emitted the fragment');
// contains init segment after audio track change
_qunit2['default'].equal(mp4Segments[2][0], 0, 'fragment contains the correct first byte');
_qunit2['default'].equal(mp4Segments[2][1], 1, 'fragment contains the correct second byte');
_qunit2['default'].equal(mp4Segments[2][2], 6, 'fragment contains the correct third byte');
_qunit2['default'].equal(mp4Segments[2][3], 7, 'fragment contains the correct fourth byte');
});
_qunit2['default'].test('handles empty codec string value', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t; codecs=""');
initializeNativeSourceBuffers(sourceBuffer);
_qunit2['default'].ok(mediaSource.videoBuffer_, 'created a video buffer');
_qunit2['default'].equal(mediaSource.videoBuffer_.type, 'video/mp4;codecs="avc1.4d400d"', 'video buffer has the default codec');
_qunit2['default'].ok(mediaSource.audioBuffer_, 'created an audio buffer');
_qunit2['default'].equal(mediaSource.audioBuffer_.type, 'audio/mp4;codecs="mp4a.40.2"', 'audio buffer has the default codec');
_qunit2['default'].equal(mediaSource.sourceBuffers.length, 1, 'created one virtual buffer');
_qunit2['default'].equal(mediaSource.sourceBuffers[0], sourceBuffer, 'returned the virtual buffer');
});
_qunit2['default'].test('can create an audio buffer by itself', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t; codecs="mp4a.40.2"');
initializeNativeSourceBuffers(sourceBuffer);
_qunit2['default'].ok(!mediaSource.videoBuffer_, 'did not create a video buffer');
_qunit2['default'].ok(mediaSource.audioBuffer_, 'created an audio buffer');
_qunit2['default'].equal(mediaSource.audioBuffer_.type, 'audio/mp4;codecs="mp4a.40.2"', 'audio buffer has the default codec');
_qunit2['default'].equal(mediaSource.sourceBuffers.length, 1, 'created one virtual buffer');
_qunit2['default'].equal(mediaSource.sourceBuffers[0], sourceBuffer, 'returned the virtual buffer');
});
_qunit2['default'].test('can create an video buffer by itself', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t; codecs="avc1.4d400d"');
initializeNativeSourceBuffers(sourceBuffer);
_qunit2['default'].ok(!mediaSource.audioBuffer_, 'did not create an audio buffer');
_qunit2['default'].ok(mediaSource.videoBuffer_, 'created an video buffer');
_qunit2['default'].equal(mediaSource.videoBuffer_.type, 'video/mp4;codecs="avc1.4d400d"', 'video buffer has the codec that was passed');
_qunit2['default'].equal(mediaSource.sourceBuffers.length, 1, 'created one virtual buffer');
_qunit2['default'].equal(mediaSource.sourceBuffers[0], sourceBuffer, 'returned the virtual buffer');
});
_qunit2['default'].test('handles invalid codec string', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t; codecs="nope"');
initializeNativeSourceBuffers(sourceBuffer);
_qunit2['default'].ok(mediaSource.videoBuffer_, 'created a video buffer');
_qunit2['default'].equal(mediaSource.videoBuffer_.type, 'video/mp4;codecs="avc1.4d400d"', 'video buffer has the default codec');
_qunit2['default'].ok(mediaSource.audioBuffer_, 'created an audio buffer');
_qunit2['default'].equal(mediaSource.audioBuffer_.type, 'audio/mp4;codecs="mp4a.40.2"', 'audio buffer has the default codec');
_qunit2['default'].equal(mediaSource.sourceBuffers.length, 1, 'created one virtual buffer');
_qunit2['default'].equal(mediaSource.sourceBuffers[0], sourceBuffer, 'returned the virtual buffer');
});
_qunit2['default'].test('handles codec strings in reverse order', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t; codecs="mp4a.40.5,avc1.64001f"');
initializeNativeSourceBuffers(sourceBuffer);
_qunit2['default'].ok(mediaSource.videoBuffer_, 'created a video buffer');
_qunit2['default'].equal(mediaSource.videoBuffer_.type, 'video/mp4;codecs="avc1.64001f"', 'video buffer has the passed codec');
_qunit2['default'].ok(mediaSource.audioBuffer_, 'created an audio buffer');
_qunit2['default'].equal(mediaSource.audioBuffer_.type, 'audio/mp4;codecs="mp4a.40.5"', 'audio buffer has the passed codec');
_qunit2['default'].equal(mediaSource.sourceBuffers.length, 1, 'created one virtual buffer');
_qunit2['default'].equal(mediaSource.sourceBuffers[0], sourceBuffer, 'returned the virtual buffer');
_qunit2['default'].ok(sourceBuffer.transmuxer_, 'created a transmuxer');
});
_qunit2['default'].test('forwards codec strings to native buffers when specified', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t; codecs="avc1.64001f,mp4a.40.5"');
initializeNativeSourceBuffers(sourceBuffer);
_qunit2['default'].ok(mediaSource.videoBuffer_, 'created a video buffer');
_qunit2['default'].equal(mediaSource.videoBuffer_.type, 'video/mp4;codecs="avc1.64001f"', 'passed the video codec along');
_qunit2['default'].ok(mediaSource.audioBuffer_, 'created a video buffer');
_qunit2['default'].equal(mediaSource.audioBuffer_.type, 'audio/mp4;codecs="mp4a.40.5"', 'passed the audio codec along');
});
_qunit2['default'].test('parses old-school apple codec strings to the modern standard', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t; codecs="avc1.100.31,mp4a.40.5"');
initializeNativeSourceBuffers(sourceBuffer);
_qunit2['default'].ok(mediaSource.videoBuffer_, 'created a video buffer');
_qunit2['default'].equal(mediaSource.videoBuffer_.type, 'video/mp4;codecs="avc1.64001f"', 'passed the video codec along');
_qunit2['default'].ok(mediaSource.audioBuffer_, 'created a video buffer');
_qunit2['default'].equal(mediaSource.audioBuffer_.type, 'audio/mp4;codecs="mp4a.40.5"', 'passed the audio codec along');
});
_qunit2['default'].test('specifies reasonable codecs if none are specified', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
initializeNativeSourceBuffers(sourceBuffer);
_qunit2['default'].ok(mediaSource.videoBuffer_, 'created a video buffer');
_qunit2['default'].equal(mediaSource.videoBuffer_.type, 'video/mp4;codecs="avc1.4d400d"', 'passed the video codec along');
_qunit2['default'].ok(mediaSource.audioBuffer_, 'created a video buffer');
_qunit2['default'].equal(mediaSource.audioBuffer_.type, 'audio/mp4;codecs="mp4a.40.2"', 'passed the audio codec along');
});
_qunit2['default'].test('virtual buffers are updating if either native buffer is', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
initializeNativeSourceBuffers(sourceBuffer);
mediaSource.videoBuffer_.updating = true;
mediaSource.audioBuffer_.updating = false;
_qunit2['default'].equal(sourceBuffer.updating, true, 'virtual buffer is updating');
mediaSource.audioBuffer_.updating = true;
_qunit2['default'].equal(sourceBuffer.updating, true, 'virtual buffer is updating');
mediaSource.videoBuffer_.updating = false;
_qunit2['default'].equal(sourceBuffer.updating, true, 'virtual buffer is updating');
mediaSource.audioBuffer_.updating = false;
_qunit2['default'].equal(sourceBuffer.updating, false, 'virtual buffer is not updating');
});
_qunit2['default'].test('virtual buffers have a position buffered if both native buffers do', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
initializeNativeSourceBuffers(sourceBuffer);
mediaSource.videoBuffer_.buffered = _videoJs2['default'].createTimeRanges([[0, 10], [20, 30]]);
mediaSource.audioBuffer_.buffered = _videoJs2['default'].createTimeRanges([[0, 7], [11, 15], [16, 40]]);
_qunit2['default'].equal(sourceBuffer.buffered.length, 2, 'two buffered ranges');
_qunit2['default'].equal(sourceBuffer.buffered.start(0), 0, 'first starts at zero');
_qunit2['default'].equal(sourceBuffer.buffered.end(0), 7, 'first ends at seven');
_qunit2['default'].equal(sourceBuffer.buffered.start(1), 20, 'second starts at twenty');
_qunit2['default'].equal(sourceBuffer.buffered.end(1), 30, 'second ends at 30');
});
_qunit2['default'].test('disabled audio does not affect buffered property', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var muxedBuffer = mediaSource.addSourceBuffer('video/mp2t');
// creating a separate audio buffer disables audio on the muxed one
var audioBuffer = mediaSource.addSourceBuffer('audio/mp2t; codecs="mp4a.40.2"');
initializeNativeSourceBuffers(muxedBuffer);
mediaSource.videoBuffer_.buffered = _videoJs2['default'].createTimeRanges([[1, 10]]);
mediaSource.audioBuffer_.buffered = _videoJs2['default'].createTimeRanges([[2, 11]]);
_qunit2['default'].equal(audioBuffer.buffered.length, 1, 'one buffered range');
_qunit2['default'].equal(audioBuffer.buffered.start(0), 2, 'starts at two');
_qunit2['default'].equal(audioBuffer.buffered.end(0), 11, 'ends at eleven');
_qunit2['default'].equal(muxedBuffer.buffered.length, 1, 'one buffered range');
_qunit2['default'].equal(muxedBuffer.buffered.start(0), 1, 'starts at one');
_qunit2['default'].equal(muxedBuffer.buffered.end(0), 10, 'ends at ten');
});
_qunit2['default'].test('sets transmuxer baseMediaDecodeTime on appends', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
var resets = [];
sourceBuffer.transmuxer_.postMessage = function (message) {
if (message.action === 'setTimestampOffset') {
resets.push(message.timestampOffset);
}
};
sourceBuffer.timestampOffset = 42;
_qunit2['default'].equal(resets.length, 1, 'reset called');
_qunit2['default'].equal(resets[0], 42, 'set the baseMediaDecodeTime based on timestampOffset');
});
_qunit2['default'].test('aggregates source buffer update events', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
var updates = 0;
var updateends = 0;
var updatestarts = 0;
initializeNativeSourceBuffers(sourceBuffer);
mediaSource.player_ = this.player;
sourceBuffer.addEventListener('updatestart', function () {
updatestarts++;
});
sourceBuffer.addEventListener('update', function () {
updates++;
});
sourceBuffer.addEventListener('updateend', function () {
updateends++;
});
_qunit2['default'].equal(updatestarts, 0, 'no updatestarts before a `done` message is received');
_qunit2['default'].equal(updates, 0, 'no updates before a `done` message is received');
_qunit2['default'].equal(updateends, 0, 'no updateends before a `done` message is received');
// the video buffer begins updating first:
sourceBuffer.videoBuffer_.updating = true;
sourceBuffer.audioBuffer_.updating = false;
sourceBuffer.videoBuffer_.trigger('updatestart');
_qunit2['default'].equal(updatestarts, 1, 'aggregated updatestart');
sourceBuffer.audioBuffer_.updating = true;
sourceBuffer.audioBuffer_.trigger('updatestart');
_qunit2['default'].equal(updatestarts, 1, 'aggregated updatestart');
// the audio buffer finishes first:
sourceBuffer.audioBuffer_.updating = false;
sourceBuffer.videoBuffer_.updating = true;
sourceBuffer.audioBuffer_.trigger('update');
_qunit2['default'].equal(updates, 0, 'waited for the second update');
sourceBuffer.videoBuffer_.updating = false;
sourceBuffer.videoBuffer_.trigger('update');
_qunit2['default'].equal(updates, 1, 'aggregated update');
// audio finishes first:
sourceBuffer.videoBuffer_.updating = true;
sourceBuffer.audioBuffer_.updating = false;
sourceBuffer.audioBuffer_.trigger('updateend');
_qunit2['default'].equal(updateends, 0, 'waited for the second updateend');
sourceBuffer.videoBuffer_.updating = false;
sourceBuffer.videoBuffer_.trigger('updateend');
_qunit2['default'].equal(updateends, 1, 'aggregated updateend');
});
_qunit2['default'].test('translates caption events into WebVTT cues', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
var types = [];
var hls608 = 0;
mediaSource.player_ = {
addRemoteTextTrack: function addRemoteTextTrack(options) {
types.push(options.kind);
return {
track: {
kind: options.kind,
label: options.label,
cues: [],
addCue: function addCue(cue) {
this.cues.push(cue);
}
}
};
},
textTracks: function textTracks() {
return {
getTrackById: function getTrackById() {}
};
},
remoteTextTracks: function remoteTextTracks() {},
tech_: new _videoJs2['default'].EventTarget()
};
mediaSource.player_.tech_.on('usage', function (event) {
if (event.name === 'hls-608') {
hls608++;
}
});
sourceBuffer.timestampOffset = 10;
sourceBuffer.transmuxer_.onmessage(createDataMessage('video', new Uint8Array(1), {
captions: [{
startTime: 1,
endTime: 3,
text: 'This is an in-band caption in CC1',
stream: 'CC1'
}],
captionStreams: { CC1: true }
}));
sourceBuffer.transmuxer_.onmessage(doneMessage);
var cues = sourceBuffer.inbandTextTracks_.CC1.cues;
_qunit2['default'].equal(hls608, 1, 'one hls-608 event was triggered');
_qunit2['default'].equal(types.length, 1, 'created one text track');
_qunit2['default'].equal(types[0], 'captions', 'the type was captions');
_qunit2['default'].equal(cues.length, 1, 'created one cue');
_qunit2['default'].equal(cues[0].text, 'This is an in-band caption in CC1', 'included the text');
_qunit2['default'].equal(cues[0].startTime, 11, 'started at eleven');
_qunit2['default'].equal(cues[0].endTime, 13, 'ended at thirteen');
});
_qunit2['default'].test('captions use existing tracks with id equal to CC#', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
var addTrackCalled = 0;
var tracks = {
CC1: {
kind: 'captions',
label: 'CC1',
id: 'CC1',
cues: [],
addCue: function addCue(cue) {
this.cues.push(cue);
}
},
CC2: {
kind: 'captions',
label: 'CC2',
id: 'CC2',
cues: [],
addCue: function addCue(cue) {
this.cues.push(cue);
}
}
};
mediaSource.player_ = {
addRemoteTextTrack: function addRemoteTextTrack(options) {
addTrackCalled++;
},
textTracks: function textTracks() {
return {
getTrackById: function getTrackById(id) {
return tracks[id];
}
};
},
remoteTextTracks: function remoteTextTracks() {},
tech_: new _videoJs2['default'].EventTarget()
};
sourceBuffer.timestampOffset = 10;
sourceBuffer.transmuxer_.onmessage(createDataMessage('video', new Uint8Array(1), {
captions: [{
stream: 'CC1',
startTime: 1,
endTime: 3,
text: 'This is an in-band caption in CC1'
}, {
stream: 'CC2',
startTime: 1,
endTime: 3,
text: 'This is an in-band caption in CC2'
}],
captionStreams: { CC1: true, CC2: true }
}));
sourceBuffer.transmuxer_.onmessage(doneMessage);
var cues = sourceBuffer.inbandTextTracks_.CC1.cues;
_qunit2['default'].equal(addTrackCalled, 0, 'no tracks were created');
_qunit2['default'].equal(tracks.CC1.cues.length, 1, 'CC1 contains 1 cue');
_qunit2['default'].equal(tracks.CC2.cues.length, 1, 'CC2 contains 1 cue');
_qunit2['default'].equal(tracks.CC1.cues[0].text, 'This is an in-band caption in CC1', 'CC1 contains the right cue');
_qunit2['default'].equal(tracks.CC2.cues[0].text, 'This is an in-band caption in CC2', 'CC2 contains the right cue');
});
_qunit2['default'].test('translates metadata events into WebVTT cues', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
mediaSource.duration = Infinity;
mediaSource.nativeMediaSource_.duration = 60;
var types = [];
var metadata = [{
cueTime: 2,
frames: [{
url: 'This is a url tag'
}, {
value: 'This is a text tag'
}]
}, {
cueTime: 12,
frames: [{
data: 'This is a priv tag'
}]
}];
metadata.dispatchType = 0x10;
mediaSource.player_ = {
addRemoteTextTrack: function addRemoteTextTrack(options) {
types.push(options.kind);
return {
track: {
kind: options.kind,
label: options.label,
cues: [],
addCue: function addCue(cue) {
this.cues.push(cue);
}
}
};
},
remoteTextTracks: function remoteTextTracks() {}
};
sourceBuffer.timestampOffset = 10;
sourceBuffer.transmuxer_.onmessage(createDataMessage('video', new Uint8Array(1), {
metadata: metadata
}));
sourceBuffer.transmuxer_.onmessage(doneMessage);
_qunit2['default'].equal(sourceBuffer.metadataTrack_.inBandMetadataTrackDispatchType, 16, 'in-band metadata track dispatch type correctly set');
var cues = sourceBuffer.metadataTrack_.cues;
_qunit2['default'].equal(types.length, 1, 'created one text track');
_qunit2['default'].equal(types[0], 'metadata', 'the type was metadata');
_qunit2['default'].equal(cues.length, 3, 'created three cues');
_qunit2['default'].equal(cues[0].text, 'This is a url tag', 'included the text');
_qunit2['default'].equal(cues[0].startTime, 12, 'started at twelve');
_qunit2['default'].equal(cues[0].endTime, 22, 'ended at StartTime of next cue(22)');
_qunit2['default'].equal(cues[1].text, 'This is a text tag', 'included the text');
_qunit2['default'].equal(cues[1].startTime, 12, 'started at twelve');
_qunit2['default'].equal(cues[1].endTime, 22, 'ended at the startTime of next cue(22)');
_qunit2['default'].equal(cues[2].text, 'This is a priv tag', 'included the text');
_qunit2['default'].equal(cues[2].startTime, 22, 'started at twenty two');
_qunit2['default'].equal(cues[2].endTime, Number.MAX_VALUE, 'ended at the maximum value');
mediaSource.duration = 100;
mediaSource.trigger('sourceended');
_qunit2['default'].equal(cues[2].endTime, mediaSource.duration, 'sourceended is fired');
});
_qunit2['default'].test('does not wrap mp4 source buffers', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
mediaSource.addSourceBuffer('video/mp4;codecs=avc1.4d400d');
mediaSource.addSourceBuffer('audio/mp4;codecs=mp4a.40.2');
_qunit2['default'].equal(mediaSource.sourceBuffers.length, mediaSource.nativeMediaSource_.sourceBuffers.length, 'did not need virtual buffers');
_qunit2['default'].equal(mediaSource.sourceBuffers.length, 2, 'created native buffers');
});
_qunit2['default'].test('can get activeSourceBuffers', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
// although activeSourceBuffers should technically be a SourceBufferList, we are
// returning it as an array, and users may expect it to behave as such
_qunit2['default'].ok(Array.isArray(mediaSource.activeSourceBuffers));
});
_qunit2['default'].test('active source buffers are updated on each buffer\'s updateend', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var updateCallCount = 0;
var sourceBuffer = undefined;
mediaSource.updateActiveSourceBuffers_ = function () {
updateCallCount++;
};
sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
mediaSource.player_ = this.player;
mediaSource.url_ = this.url;
mediaSource.trigger('sourceopen');
_qunit2['default'].equal(updateCallCount, 0, 'active source buffers not updated on adding source buffer');
mediaSource.player_.audioTracks().trigger('addtrack');
_qunit2['default'].equal(updateCallCount, 1, 'active source buffers updated after addtrack');
sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
_qunit2['default'].equal(updateCallCount, 1, 'active source buffers not updated on adding second source buffer');
mediaSource.player_.audioTracks().trigger('removetrack');
_qunit2['default'].equal(updateCallCount, 2, 'active source buffers updated after removetrack');
mediaSource.player_.audioTracks().trigger('change');
_qunit2['default'].equal(updateCallCount, 3, 'active source buffers updated after change');
});
_qunit2['default'].test('combined buffer is the only active buffer when main track enabled', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBufferAudio = undefined;
var sourceBufferCombined = undefined;
var audioTracks = [{
enabled: true,
kind: 'main',
label: 'main'
}, {
enabled: false,
kind: 'alternative',
label: 'English (UK)'
}];
this.player.audioTracks = function () {
return audioTracks;
};
mediaSource.player_ = this.player;
sourceBufferCombined = mediaSource.addSourceBuffer('video/m2pt');
sourceBufferCombined.videoCodec_ = true;
sourceBufferCombined.audioCodec_ = true;
sourceBufferAudio = mediaSource.addSourceBuffer('video/m2pt');
sourceBufferAudio.videoCodec_ = false;
sourceBufferAudio.audioCodec_ = true;
mediaSource.updateActiveSourceBuffers_();
_qunit2['default'].equal(mediaSource.activeSourceBuffers.length, 1, 'active source buffers starts with one source buffer');
_qunit2['default'].equal(mediaSource.activeSourceBuffers[0], sourceBufferCombined, 'active source buffers starts with combined source buffer');
});
_qunit2['default'].test('combined & audio buffers are active when alternative track enabled', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBufferAudio = undefined;
var sourceBufferCombined = undefined;
var audioTracks = [{
enabled: false,
kind: 'main',
label: 'main'
}, {
enabled: true,
kind: 'alternative',
label: 'English (UK)'
}];
this.player.audioTracks = function () {
return audioTracks;
};
mediaSource.player_ = this.player;
sourceBufferCombined = mediaSource.addSourceBuffer('video/m2pt');
sourceBufferCombined.videoCodec_ = true;
sourceBufferCombined.audioCodec_ = true;
sourceBufferAudio = mediaSource.addSourceBuffer('video/m2pt');
sourceBufferAudio.videoCodec_ = false;
sourceBufferAudio.audioCodec_ = true;
mediaSource.updateActiveSourceBuffers_();
_qunit2['default'].equal(mediaSource.activeSourceBuffers.length, 2, 'active source buffers includes both source buffers');
// maintains same order as source buffers were created
_qunit2['default'].equal(mediaSource.activeSourceBuffers[0], sourceBufferCombined, 'active source buffers starts with combined source buffer');
_qunit2['default'].equal(mediaSource.activeSourceBuffers[1], sourceBufferAudio, 'active source buffers ends with audio source buffer');
});
_qunit2['default'].test('video only & audio only buffers are always active', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBufferAudio = undefined;
var sourceBufferCombined = undefined;
var audioTracks = [{
enabled: false,
kind: 'main',
label: 'main'
}, {
enabled: true,
kind: 'alternative',
label: 'English (UK)'
}];
this.player.audioTracks = function () {
return audioTracks;
};
mediaSource.player_ = this.player;
sourceBufferCombined = mediaSource.addSourceBuffer('video/m2pt');
sourceBufferCombined.videoCodec_ = true;
sourceBufferCombined.audioCodec_ = false;
sourceBufferAudio = mediaSource.addSourceBuffer('video/m2pt');
sourceBufferAudio.videoCodec_ = false;
sourceBufferAudio.audioCodec_ = true;
mediaSource.updateActiveSourceBuffers_();
_qunit2['default'].equal(mediaSource.activeSourceBuffers.length, 2, 'active source buffers includes both source buffers');
// maintains same order as source buffers were created
_qunit2['default'].equal(mediaSource.activeSourceBuffers[0], sourceBufferCombined, 'active source buffers starts with combined source buffer');
_qunit2['default'].equal(mediaSource.activeSourceBuffers[1], sourceBufferAudio, 'active source buffers ends with audio source buffer');
audioTracks[0].enabled = true;
audioTracks[1].enabled = false;
mediaSource.updateActiveSourceBuffers_();
_qunit2['default'].equal(mediaSource.activeSourceBuffers.length, 2, 'active source buffers includes both source buffers');
// maintains same order as source buffers were created
_qunit2['default'].equal(mediaSource.activeSourceBuffers[0], sourceBufferCombined, 'active source buffers starts with combined source buffer');
_qunit2['default'].equal(mediaSource.activeSourceBuffers[1], sourceBufferAudio, 'active source buffers ends with audio source buffer');
});
_qunit2['default'].test('Single buffer always active. Audio disabled depends on audio codec', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var audioTracks = [{
enabled: true,
kind: 'main',
label: 'main'
}];
this.player.audioTracks = function () {
return audioTracks;
};
mediaSource.player_ = this.player;
var sourceBuffer = mediaSource.addSourceBuffer('video/m2pt');
// video only
sourceBuffer.videoCodec_ = true;
sourceBuffer.audioCodec_ = false;
mediaSource.updateActiveSourceBuffers_();
_qunit2['default'].equal(mediaSource.activeSourceBuffers.length, 1, 'sourceBuffer is active');
_qunit2['default'].ok(mediaSource.activeSourceBuffers[0].audioDisabled_, 'audio is disabled on video only active sourceBuffer');
// audio only
sourceBuffer.videoCodec_ = false;
sourceBuffer.audioCodec_ = true;
mediaSource.updateActiveSourceBuffers_();
_qunit2['default'].equal(mediaSource.activeSourceBuffers.length, 1, 'sourceBuffer is active');
_qunit2['default'].notOk(mediaSource.activeSourceBuffers[0].audioDisabled_, 'audio not disabled on audio only active sourceBuffer');
});
_qunit2['default'].test('video segments with info trigger videooinfo event', function () {
var data = new Uint8Array(1);
var infoEvents = [];
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
var info = { width: 100 };
var newinfo = { width: 225 };
mediaSource.on('videoinfo', function (e) {
return infoEvents.push(e);
});
// send an audio segment with info, then send done
sourceBuffer.transmuxer_.onmessage(createDataMessage('video', data, { info: info }));
sourceBuffer.transmuxer_.onmessage(doneMessage);
_qunit2['default'].equal(infoEvents.length, 1, 'video info should trigger');
_qunit2['default'].deepEqual(infoEvents[0].info, info, 'video info = muxed info');
// send an audio segment with info, then send done
sourceBuffer.transmuxer_.onmessage(createDataMessage('video', data, { info: newinfo }));
sourceBuffer.transmuxer_.onmessage(doneMessage);
_qunit2['default'].equal(infoEvents.length, 2, 'video info should trigger');
_qunit2['default'].deepEqual(infoEvents[1].info, newinfo, 'video info = muxed info');
});
_qunit2['default'].test('audio segments with info trigger audioinfo event', function () {
var data = new Uint8Array(1);
var infoEvents = [];
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t');
var info = { width: 100 };
var newinfo = { width: 225 };
mediaSource.on('audioinfo', function (e) {
return infoEvents.push(e);
});
// send an audio segment with info, then send done
sourceBuffer.transmuxer_.onmessage(createDataMessage('audio', data, { info: info }));
sourceBuffer.transmuxer_.onmessage(doneMessage);
_qunit2['default'].equal(infoEvents.length, 1, 'audio info should trigger');
_qunit2['default'].deepEqual(infoEvents[0].info, info, 'audio info = muxed info');
// send an audio segment with info, then send done
sourceBuffer.transmuxer_.onmessage(createDataMessage('audio', data, { info: newinfo }));
sourceBuffer.transmuxer_.onmessage(doneMessage);
_qunit2['default'].equal(infoEvents.length, 2, 'audio info should trigger');
_qunit2['default'].deepEqual(infoEvents[1].info, newinfo, 'audio info = muxed info');
});
_qunit2['default'].test('creates native SourceBuffers immediately if a second ' + 'VirtualSourceBuffer is created', function () {
var mediaSource = new _videoJs2['default'].MediaSource();
var sourceBuffer = mediaSource.addSourceBuffer('video/mp2t; codecs="avc1.64001f,mp4a.40.5"');
var sourceBuffer2 = mediaSource.addSourceBuffer('video/mp2t; codecs="mp4a.40.5"');
_qunit2['default'].ok(mediaSource.videoBuffer_, 'created a video buffer');
_qunit2['default'].equal(mediaSource.videoBuffer_.type, 'video/mp4;codecs="avc1.64001f"', 'video buffer has the specified codec');
_qunit2['default'].ok(mediaSource.audioBuffer_, 'created an audio buffer');
_qunit2['default'].equal(mediaSource.audioBuffer_.type, 'audio/mp4;codecs="mp4a.40.5"', 'audio buffer has the specified codec');
_qunit2['default'].equal(mediaSource.sourceBuffers.length, 2, 'created two virtual buffers');
_qunit2['default'].equal(mediaSource.sourceBuffers[0], sourceBuffer, 'returned the virtual buffer');
_qunit2['default'].equal(mediaSource.sourceBuffers[1], sourceBuffer2, 'returned the virtual buffer');
_qunit2['default'].equal(sourceBuffer.audioDisabled_, true, 'first source buffer\'s audio is automatically disabled');
_qunit2['default'].ok(sourceBuffer2.audioBuffer_, 'second source buffer has an audio source buffer');
});
_qunit2['default'].module('VirtualSourceBuffer - Isolated Functions');
_qunit2['default'].test('gopsSafeToAlignWith returns correct list', function () {
// gopsSafeToAlignWith uses a 3 second safetyNet so that gops very close to the playhead
// are not considered safe to append to
var safetyNet = 3;
var pts = function pts(time) {
return Math.ceil(time * 90000);
};
var mapping = 0;
var _currentTime = 0;
var buffer = [];
var player = undefined;
var actual = undefined;
var expected = undefined;
expected = [];
actual = (0, _srcVirtualSourceBuffer.gopsSafeToAlignWith)(buffer, player, mapping);
_qunit2['default'].deepEqual(actual, expected, 'empty array when player is undefined');
player = { currentTime: function currentTime() {
return _currentTime;
} };
actual = (0, _srcVirtualSourceBuffer.gopsSafeToAlignWith)(buffer, player, mapping);
_qunit2['default'].deepEqual(actual, expected, 'empty array when buffer is empty');
buffer = expected = [{ pts: pts(_currentTime + safetyNet + 1) }, { pts: pts(_currentTime + safetyNet + 2) }, { pts: pts(_currentTime + safetyNet + 3) }];
actual = (0, _srcVirtualSourceBuffer.gopsSafeToAlignWith)(buffer, player, mapping);
_qunit2['default'].deepEqual(actual, expected, 'entire buffer considered safe when all gops come after currentTime + safetyNet');
buffer = [{ pts: pts(_currentTime + safetyNet) }, { pts: pts(_currentTime + safetyNet + 1) }, { pts: pts(_currentTime + safetyNet + 2) }];
expected = [{ pts: pts(_currentTime + safetyNet + 1) }, { pts: pts(_currentTime + safetyNet + 2) }];
actual = (0, _srcVirtualSourceBuffer.gopsSafeToAlignWith)(buffer, player, mapping);
_qunit2['default'].deepEqual(actual, expected, 'safetyNet comparison is not inclusive');
_currentTime = 10;
mapping = -5;
buffer = [{ pts: pts(_currentTime - mapping + safetyNet - 2) }, { pts: pts(_currentTime - mapping + safetyNet - 1) }, { pts: pts(_currentTime - mapping + safetyNet) }, { pts: pts(_currentTime - mapping + safetyNet + 1) }, { pts: pts(_currentTime - mapping + safetyNet + 2) }];
expected = [{ pts: pts(_currentTime - mapping + safetyNet + 1) }, { pts: pts(_currentTime - mapping + safetyNet + 2) }];
actual = (0, _srcVirtualSourceBuffer.gopsSafeToAlignWith)(buffer, player, mapping);
_qunit2['default'].deepEqual(actual, expected, 'uses mapping to shift currentTime');
_currentTime = 20;
expected = [];
actual = (0, _srcVirtualSourceBuffer.gopsSafeToAlignWith)(buffer, player, mapping);
_qunit2['default'].deepEqual(actual, expected, 'empty array when no gops in buffer come after currentTime');
});
_qunit2['default'].test('updateGopBuffer correctly processes new gop information', function () {
var buffer = [];
var gops = [];
var replace = true;
var actual = undefined;
var expected = undefined;
buffer = expected = [{ pts: 100 }, { pts: 200 }];
actual = (0, _srcVirtualSourceBuffer.updateGopBuffer)(buffer, gops, replace);
_qunit2['default'].deepEqual(actual, expected, 'returns buffer when no new gops');
gops = expected = [{ pts: 300 }, { pts: 400 }];
actual = (0, _srcVirtualSourceBuffer.updateGopBuffer)(buffer, gops, replace);
_qunit2['default'].deepEqual(actual, expected, 'returns only new gops when replace is true');
replace = false;
buffer = [];
gops = [{ pts: 100 }];
expected = [{ pts: 100 }];
actual = (0, _srcVirtualSourceBuffer.updateGopBuffer)(buffer, gops, replace);
_qunit2['default'].deepEqual(actual, expected, 'appends new gops to empty buffer');
buffer = [{ pts: 100 }, { pts: 200 }];
gops = [{ pts: 300 }, { pts: 400 }];
expected = [{ pts: 100 }, { pts: 200 }, { pts: 300 }, { pts: 400 }];
actual = (0, _srcVirtualSourceBuffer.updateGopBuffer)(buffer, gops, replace);
_qunit2['default'].deepEqual(actual, expected, 'appends new gops at end of buffer when no overlap');
buffer = [{ pts: 100 }, { pts: 200 }, { pts: 300 }, { pts: 400 }];
gops = [{ pts: 250 }, { pts: 300 }, { pts: 350 }];
expected = [{ pts: 100 }, { pts: 200 }, { pts: 250 }, { pts: 300 }, { pts: 350 }];
actual = (0, _srcVirtualSourceBuffer.updateGopBuffer)(buffer, gops, replace);
_qunit2['default'].deepEqual(actual, expected, 'slices buffer at point of overlap and appends new gops');
buffer = [{ pts: 100 }, { pts: 200 }, { pts: 300 }, { pts: 400 }];
gops = [{ pts: 200 }, { pts: 300 }, { pts: 350 }];
expected = [{ pts: 100 }, { pts: 200 }, { pts: 300 }, { pts: 350 }];
actual = (0, _srcVirtualSourceBuffer.updateGopBuffer)(buffer, gops, replace);
_qunit2['default'].deepEqual(actual, expected, 'overlap slice is inclusive');
buffer = [{ pts: 300 }, { pts: 400 }, { pts: 500 }, { pts: 600 }];
gops = [{ pts: 100 }, { pts: 200 }, { pts: 250 }];
expected = [{ pts: 100 }, { pts: 200 }, { pts: 250 }];
actual = (0, _srcVirtualSourceBuffer.updateGopBuffer)(buffer, gops, replace);
_qunit2['default'].deepEqual(actual, expected, 'completely replaces buffer with new gops when all gops come before buffer');
});
_qunit2['default'].test('removeGopBuffer correctly removes range from buffer', function () {
var pts = function pts(time) {
return Math.ceil(time * 90000);
};
var buffer = [];
var start = 0;
var end = 0;
var mapping = -5;
var actual = undefined;
var expected = undefined;
expected = [];
actual = (0, _srcVirtualSourceBuffer.removeGopBuffer)(buffer, start, end, mapping);
_qunit2['default'].deepEqual(actual, expected, 'returns empty array when buffer empty');
start = 0;
end = 8;
buffer = expected = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
actual = (0, _srcVirtualSourceBuffer.removeGopBuffer)(buffer, start, end, mapping);
_qunit2['default'].deepEqual(actual, expected, 'no removal when remove range comes before start of buffer');
start = 22;
end = 30;
buffer = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
expected = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }];
actual = (0, _srcVirtualSourceBuffer.removeGopBuffer)(buffer, start, end, mapping);
_qunit2['default'].deepEqual(actual, expected, 'removes last gop when remove range is after end of buffer');
start = 0;
end = 10;
buffer = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
expected = [{ pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
actual = (0, _srcVirtualSourceBuffer.removeGopBuffer)(buffer, start, end, mapping);
_qunit2['default'].deepEqual(actual, expected, 'clamps start range to begining of buffer');
start = 0;
end = 12;
buffer = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
expected = [{ pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
actual = (0, _srcVirtualSourceBuffer.removeGopBuffer)(buffer, start, end, mapping);
_qunit2['default'].deepEqual(actual, expected, 'clamps start range to begining of buffer');
start = 0;
end = 14;
buffer = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
expected = [{ pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
actual = (0, _srcVirtualSourceBuffer.removeGopBuffer)(buffer, start, end, mapping);
_qunit2['default'].deepEqual(actual, expected, 'clamps start range to begining of buffer');
start = 15;
end = 30;
buffer = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
expected = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }];
actual = (0, _srcVirtualSourceBuffer.removeGopBuffer)(buffer, start, end, mapping);
_qunit2['default'].deepEqual(actual, expected, 'clamps end range to end of buffer');
start = 17;
end = 30;
buffer = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
expected = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }];
actual = (0, _srcVirtualSourceBuffer.removeGopBuffer)(buffer, start, end, mapping);
_qunit2['default'].deepEqual(actual, expected, 'clamps end range to end of buffer');
start = 20;
end = 30;
buffer = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
expected = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }];
actual = (0, _srcVirtualSourceBuffer.removeGopBuffer)(buffer, start, end, mapping);
_qunit2['default'].deepEqual(actual, expected, 'clamps end range to end of buffer');
buffer = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
start = 12;
end = 15;
expected = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
actual = (0, _srcVirtualSourceBuffer.removeGopBuffer)(buffer, start, end, mapping);
_qunit2['default'].deepEqual(actual, expected, 'removes gops that remove range intersects with');
buffer = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
start = 12;
end = 14;
expected = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
actual = (0, _srcVirtualSourceBuffer.removeGopBuffer)(buffer, start, end, mapping);
_qunit2['default'].deepEqual(actual, expected, 'removes gops that remove range intersects with');
buffer = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
start = 13;
end = 14;
expected = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
actual = (0, _srcVirtualSourceBuffer.removeGopBuffer)(buffer, start, end, mapping);
_qunit2['default'].deepEqual(actual, expected, 'removes gops that remove range intersects with');
buffer = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
start = 13;
end = 15;
expected = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
actual = (0, _srcVirtualSourceBuffer.removeGopBuffer)(buffer, start, end, mapping);
_qunit2['default'].deepEqual(actual, expected, 'removes gops that remove range intersects with');
buffer = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
start = 12;
end = 17;
expected = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
actual = (0, _srcVirtualSourceBuffer.removeGopBuffer)(buffer, start, end, mapping);
_qunit2['default'].deepEqual(actual, expected, 'removes gops that remove range intersects with');
buffer = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
start = 13;
end = 16;
expected = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
actual = (0, _srcVirtualSourceBuffer.removeGopBuffer)(buffer, start, end, mapping);
_qunit2['default'].deepEqual(actual, expected, 'removes gops that remove range intersects with');
start = 10;
end = 20;
buffer = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
expected = [];
actual = (0, _srcVirtualSourceBuffer.removeGopBuffer)(buffer, start, end, mapping);
_qunit2['default'].deepEqual(actual, expected, 'removes entire buffer when buffer inside remove range');
start = 0;
end = 30;
buffer = [{ pts: pts(10 - mapping) }, { pts: pts(11 - mapping) }, { pts: pts(12 - mapping) }, { pts: pts(15 - mapping) }, { pts: pts(18 - mapping) }, { pts: pts(20 - mapping) }];
expected = [];
actual = (0, _srcVirtualSourceBuffer.removeGopBuffer)(buffer, start, end, mapping);
_qunit2['default'].deepEqual(actual, expected, 'removes entire buffer when buffer inside remove range');
});
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../src/html-media-source":42,"../src/videojs-contrib-media-sources.js":45,"../src/virtual-source-buffer":46,"global/document":2,"global/window":3}]},{},[47,48,49,50,51]);