@videojs/http-streaming
Version:
Play back HLS and DASH with Video.js, even where it's not natively supported
1,579 lines (1,264 loc) • 1.04 MB
JavaScript
/*! @name @videojs/http-streaming @version 2.6.0 @license Apache-2.0 */
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('global/document'), require('global/window'), require('video.js'), require('xmldom')) :
typeof define === 'function' && define.amd ? define(['exports', 'global/document', 'global/window', 'video.js', 'xmldom'], factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.httpStreaming = {}, global.document, global.window, global.videojs, global.window));
}(this, (function (exports, document, window, videojs, xmldom) { 'use strict';
function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }
var document__default = /*#__PURE__*/_interopDefaultLegacy(document);
var window__default = /*#__PURE__*/_interopDefaultLegacy(window);
var videojs__default = /*#__PURE__*/_interopDefaultLegacy(videojs);
function _assertThisInitialized(self) {
if (self === void 0) {
throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
}
return self;
}
var assertThisInitialized = _assertThisInitialized;
function _inheritsLoose(subClass, superClass) {
subClass.prototype = Object.create(superClass.prototype);
subClass.prototype.constructor = subClass;
subClass.__proto__ = superClass;
}
var inheritsLoose = _inheritsLoose;
function createCommonjsModule(fn, basedir, module) {
return module = {
path: basedir,
exports: {},
require: function (path, base) {
return commonjsRequire(path, (base === undefined || base === null) ? module.path : base);
}
}, fn(module, module.exports), module.exports;
}
function commonjsRequire () {
throw new Error('Dynamic requires are not currently supported by @rollup/plugin-commonjs');
}
var urlToolkit = createCommonjsModule(function (module, exports) {
// see https://tools.ietf.org/html/rfc1808
(function (root) {
var URL_REGEX = /^((?:[a-zA-Z0-9+\-.]+:)?)(\/\/[^\/?#]*)?((?:[^\/?#]*\/)*[^;?#]*)?(;[^?#]*)?(\?[^#]*)?(#.*)?$/;
var FIRST_SEGMENT_REGEX = /^([^\/?#]*)(.*)$/;
var SLASH_DOT_REGEX = /(?:\/|^)\.(?=\/)/g;
var SLASH_DOT_DOT_REGEX = /(?:\/|^)\.\.\/(?!\.\.\/)[^\/]*(?=\/)/g;
var URLToolkit = {
// If opts.alwaysNormalize is true then the path will always be normalized even when it starts with / or //
// E.g
// With opts.alwaysNormalize = false (default, spec compliant)
// http://a.com/b/cd + /e/f/../g => http://a.com/e/f/../g
// With opts.alwaysNormalize = true (not spec compliant)
// http://a.com/b/cd + /e/f/../g => http://a.com/e/g
buildAbsoluteURL: function buildAbsoluteURL(baseURL, relativeURL, opts) {
opts = opts || {}; // remove any remaining space and CRLF
baseURL = baseURL.trim();
relativeURL = relativeURL.trim();
if (!relativeURL) {
// 2a) If the embedded URL is entirely empty, it inherits the
// entire base URL (i.e., is set equal to the base URL)
// and we are done.
if (!opts.alwaysNormalize) {
return baseURL;
}
var basePartsForNormalise = URLToolkit.parseURL(baseURL);
if (!basePartsForNormalise) {
throw new Error('Error trying to parse base URL.');
}
basePartsForNormalise.path = URLToolkit.normalizePath(basePartsForNormalise.path);
return URLToolkit.buildURLFromParts(basePartsForNormalise);
}
var relativeParts = URLToolkit.parseURL(relativeURL);
if (!relativeParts) {
throw new Error('Error trying to parse relative URL.');
}
if (relativeParts.scheme) {
// 2b) If the embedded URL starts with a scheme name, it is
// interpreted as an absolute URL and we are done.
if (!opts.alwaysNormalize) {
return relativeURL;
}
relativeParts.path = URLToolkit.normalizePath(relativeParts.path);
return URLToolkit.buildURLFromParts(relativeParts);
}
var baseParts = URLToolkit.parseURL(baseURL);
if (!baseParts) {
throw new Error('Error trying to parse base URL.');
}
if (!baseParts.netLoc && baseParts.path && baseParts.path[0] !== '/') {
// If netLoc missing and path doesn't start with '/', assume everthing before the first '/' is the netLoc
// This causes 'example.com/a' to be handled as '//example.com/a' instead of '/example.com/a'
var pathParts = FIRST_SEGMENT_REGEX.exec(baseParts.path);
baseParts.netLoc = pathParts[1];
baseParts.path = pathParts[2];
}
if (baseParts.netLoc && !baseParts.path) {
baseParts.path = '/';
}
var builtParts = {
// 2c) Otherwise, the embedded URL inherits the scheme of
// the base URL.
scheme: baseParts.scheme,
netLoc: relativeParts.netLoc,
path: null,
params: relativeParts.params,
query: relativeParts.query,
fragment: relativeParts.fragment
};
if (!relativeParts.netLoc) {
// 3) If the embedded URL's <net_loc> is non-empty, we skip to
// Step 7. Otherwise, the embedded URL inherits the <net_loc>
// (if any) of the base URL.
builtParts.netLoc = baseParts.netLoc; // 4) If the embedded URL path is preceded by a slash "/", the
// path is not relative and we skip to Step 7.
if (relativeParts.path[0] !== '/') {
if (!relativeParts.path) {
// 5) If the embedded URL path is empty (and not preceded by a
// slash), then the embedded URL inherits the base URL path
builtParts.path = baseParts.path; // 5a) if the embedded URL's <params> is non-empty, we skip to
// step 7; otherwise, it inherits the <params> of the base
// URL (if any) and
if (!relativeParts.params) {
builtParts.params = baseParts.params; // 5b) if the embedded URL's <query> is non-empty, we skip to
// step 7; otherwise, it inherits the <query> of the base
// URL (if any) and we skip to step 7.
if (!relativeParts.query) {
builtParts.query = baseParts.query;
}
}
} else {
// 6) The last segment of the base URL's path (anything
// following the rightmost slash "/", or the entire path if no
// slash is present) is removed and the embedded URL's path is
// appended in its place.
var baseURLPath = baseParts.path;
var newPath = baseURLPath.substring(0, baseURLPath.lastIndexOf('/') + 1) + relativeParts.path;
builtParts.path = URLToolkit.normalizePath(newPath);
}
}
}
if (builtParts.path === null) {
builtParts.path = opts.alwaysNormalize ? URLToolkit.normalizePath(relativeParts.path) : relativeParts.path;
}
return URLToolkit.buildURLFromParts(builtParts);
},
parseURL: function parseURL(url) {
var parts = URL_REGEX.exec(url);
if (!parts) {
return null;
}
return {
scheme: parts[1] || '',
netLoc: parts[2] || '',
path: parts[3] || '',
params: parts[4] || '',
query: parts[5] || '',
fragment: parts[6] || ''
};
},
normalizePath: function normalizePath(path) {
// The following operations are
// then applied, in order, to the new path:
// 6a) All occurrences of "./", where "." is a complete path
// segment, are removed.
// 6b) If the path ends with "." as a complete path segment,
// that "." is removed.
path = path.split('').reverse().join('').replace(SLASH_DOT_REGEX, ''); // 6c) All occurrences of "<segment>/../", where <segment> is a
// complete path segment not equal to "..", are removed.
// Removal of these path segments is performed iteratively,
// removing the leftmost matching pattern on each iteration,
// until no matching pattern remains.
// 6d) If the path ends with "<segment>/..", where <segment> is a
// complete path segment not equal to "..", that
// "<segment>/.." is removed.
while (path.length !== (path = path.replace(SLASH_DOT_DOT_REGEX, '')).length) {}
return path.split('').reverse().join('');
},
buildURLFromParts: function buildURLFromParts(parts) {
return parts.scheme + parts.netLoc + parts.path + parts.params + parts.query + parts.fragment;
}
};
module.exports = URLToolkit;
})();
});
var resolveUrl = function resolveUrl(baseUrl, relativeUrl) {
// return early if we don't need to resolve
if (/^[a-z]+:/i.test(relativeUrl)) {
return relativeUrl;
} // if the base URL is relative then combine with the current location
if (!/\/\//i.test(baseUrl)) {
baseUrl = urlToolkit.buildAbsoluteURL(window__default['default'].location && window__default['default'].location.href || '', baseUrl);
}
return urlToolkit.buildAbsoluteURL(baseUrl, relativeUrl);
};
/**
* @file resolve-url.js - Handling how URLs are resolved and manipulated
*/
var resolveUrl$1 = resolveUrl;
/**
* Checks whether xhr request was redirected and returns correct url depending
* on `handleManifestRedirects` option
*
* @api private
*
* @param {string} url - an url being requested
* @param {XMLHttpRequest} req - xhr request result
*
* @return {string}
*/
var resolveManifestRedirect = function resolveManifestRedirect(handleManifestRedirect, url, req) {
// To understand how the responseURL below is set and generated:
// - https://fetch.spec.whatwg.org/#concept-response-url
// - https://fetch.spec.whatwg.org/#atomic-http-redirect-handling
if (handleManifestRedirect && req && req.responseURL && url !== req.responseURL) {
return req.responseURL;
}
return url;
};
var logger = function logger(source) {
if (videojs__default['default'].log.debug) {
return videojs__default['default'].log.debug.bind(videojs__default['default'], 'VHS:', source + " >");
}
return function () {};
};
/**
* @file stream.js
*/
/**
* A lightweight readable stream implemention that handles event dispatching.
*
* @class Stream
*/
var Stream = /*#__PURE__*/function () {
function Stream() {
this.listeners = {};
}
/**
* Add a listener for a specified event type.
*
* @param {string} type the event name
* @param {Function} listener the callback to be invoked when an event of
* the specified type occurs
*/
var _proto = Stream.prototype;
_proto.on = function on(type, listener) {
if (!this.listeners[type]) {
this.listeners[type] = [];
}
this.listeners[type].push(listener);
}
/**
* Remove a listener for a specified event type.
*
* @param {string} type the event name
* @param {Function} listener a function previously registered for this
* type of event through `on`
* @return {boolean} if we could turn it off or not
*/
;
_proto.off = function off(type, listener) {
if (!this.listeners[type]) {
return false;
}
var index = this.listeners[type].indexOf(listener); // TODO: which is better?
// In Video.js we slice listener functions
// on trigger so that it does not mess up the order
// while we loop through.
//
// Here we slice on off so that the loop in trigger
// can continue using it's old reference to loop without
// messing up the order.
this.listeners[type] = this.listeners[type].slice(0);
this.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 {string} type the event name
*/
;
_proto.trigger = function trigger(type) {
var callbacks = this.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) {
var length = callbacks.length;
for (var i = 0; i < length; ++i) {
callbacks[i].call(this, arguments[1]);
}
} else {
var args = Array.prototype.slice.call(arguments, 1);
var _length = callbacks.length;
for (var _i = 0; _i < _length; ++_i) {
callbacks[_i].apply(this, args);
}
}
}
/**
* Destroys the stream and cleans up.
*/
;
_proto.dispose = function dispose() {
this.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 {Stream} destination the stream that will receive all `data` events
* @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options
*/
;
_proto.pipe = function pipe(destination) {
this.on('data', function (data) {
destination.push(data);
});
};
return Stream;
}();
var _extends_1 = createCommonjsModule(function (module) {
function _extends() {
module.exports = _extends = Object.assign || function (target) {
for (var i = 1; i < arguments.length; i++) {
var source = arguments[i];
for (var key in source) {
if (Object.prototype.hasOwnProperty.call(source, key)) {
target[key] = source[key];
}
}
}
return target;
};
return _extends.apply(this, arguments);
}
module.exports = _extends;
});
var atob = function atob(s) {
return window__default['default'].atob ? window__default['default'].atob(s) : Buffer.from(s, 'base64').toString('binary');
};
function decodeB64ToUint8Array(b64Text) {
var decodedString = atob(b64Text);
var array = new Uint8Array(decodedString.length);
for (var i = 0; i < decodedString.length; i++) {
array[i] = decodedString.charCodeAt(i);
}
return array;
}
/*! @name m3u8-parser @version 4.5.2 @license Apache-2.0 */
/**
* A stream that buffers string input and generates a `data` event for each
* line.
*
* @class LineStream
* @extends Stream
*/
var LineStream = /*#__PURE__*/function (_Stream) {
inheritsLoose(LineStream, _Stream);
function LineStream() {
var _this;
_this = _Stream.call(this) || this;
_this.buffer = '';
return _this;
}
/**
* Add new data to be parsed.
*
* @param {string} data the text to process
*/
var _proto = LineStream.prototype;
_proto.push = function push(data) {
var nextNewline;
this.buffer += data;
nextNewline = this.buffer.indexOf('\n');
for (; nextNewline > -1; nextNewline = this.buffer.indexOf('\n')) {
this.trigger('data', this.buffer.substring(0, nextNewline));
this.buffer = this.buffer.substring(nextNewline + 1);
}
};
return LineStream;
}(Stream);
/**
* "forgiving" attribute list psuedo-grammar:
* attributes -> keyvalue (',' keyvalue)*
* keyvalue -> key '=' value
* key -> [^=]*
* value -> '"' [^"]* '"' | [^,]*
*/
var attributeSeparator = function attributeSeparator() {
var key = '[^=]*';
var value = '"[^"]*"|[^,]*';
var keyvalue = '(?:' + key + ')=(?:' + value + ')';
return new RegExp('(?:^|,)(' + keyvalue + ')');
};
/**
* Parse attributes from a line given the separator
*
* @param {string} attributes the attribute line to parse
*/
var parseAttributes = function parseAttributes(attributes) {
// split the string using attributes as the separator
var attrs = attributes.split(attributeSeparator());
var result = {};
var i = attrs.length;
var attr;
while (i--) {
// filter out unmatched portions of the string
if (attrs[i] === '') {
continue;
} // split the key and value
attr = /([^=]*)=(.*)/.exec(attrs[i]).slice(1); // trim whitespace and remove optional quotes around the value
attr[0] = attr[0].replace(/^\s+|\s+$/g, '');
attr[1] = attr[1].replace(/^\s+|\s+$/g, '');
attr[1] = attr[1].replace(/^['"](.*)['"]$/g, '$1');
result[attr[0]] = attr[1];
}
return result;
};
/**
* A line-level M3U8 parser event stream. It expects to receive input one
* line at a time and performs a context-free parse of its contents. A stream
* interpretation of a manifest can be useful if the manifest is expected to
* be too large to fit comfortably into memory or the entirety of the input
* is not immediately available. Otherwise, it's probably much easier to work
* with a regular `Parser` object.
*
* Produces `data` events with an object that captures the parser's
* interpretation of the input. That object has a property `tag` that is one
* of `uri`, `comment`, or `tag`. URIs only have a single additional
* property, `line`, which captures the entirety of the input without
* interpretation. Comments similarly have a single additional property
* `text` which is the input without the leading `#`.
*
* Tags always have a property `tagType` which is the lower-cased version of
* the M3U8 directive without the `#EXT` or `#EXT-X-` prefix. For instance,
* `#EXT-X-MEDIA-SEQUENCE` becomes `media-sequence` when parsed. Unrecognized
* tags are given the tag type `unknown` and a single additional property
* `data` with the remainder of the input.
*
* @class ParseStream
* @extends Stream
*/
var ParseStream = /*#__PURE__*/function (_Stream) {
inheritsLoose(ParseStream, _Stream);
function ParseStream() {
var _this;
_this = _Stream.call(this) || this;
_this.customParsers = [];
_this.tagMappers = [];
return _this;
}
/**
* Parses an additional line of input.
*
* @param {string} line a single line of an M3U8 file to parse
*/
var _proto = ParseStream.prototype;
_proto.push = function push(line) {
var _this2 = this;
var match;
var event; // strip whitespace
line = line.trim();
if (line.length === 0) {
// ignore empty lines
return;
} // URIs
if (line[0] !== '#') {
this.trigger('data', {
type: 'uri',
uri: line
});
return;
} // map tags
var newLines = this.tagMappers.reduce(function (acc, mapper) {
var mappedLine = mapper(line); // skip if unchanged
if (mappedLine === line) {
return acc;
}
return acc.concat([mappedLine]);
}, [line]);
newLines.forEach(function (newLine) {
for (var i = 0; i < _this2.customParsers.length; i++) {
if (_this2.customParsers[i].call(_this2, newLine)) {
return;
}
} // Comments
if (newLine.indexOf('#EXT') !== 0) {
_this2.trigger('data', {
type: 'comment',
text: newLine.slice(1)
});
return;
} // strip off any carriage returns here so the regex matching
// doesn't have to account for them.
newLine = newLine.replace('\r', ''); // Tags
match = /^#EXTM3U/.exec(newLine);
if (match) {
_this2.trigger('data', {
type: 'tag',
tagType: 'm3u'
});
return;
}
match = /^#EXTINF:?([0-9\.]*)?,?(.*)?$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'inf'
};
if (match[1]) {
event.duration = parseFloat(match[1]);
}
if (match[2]) {
event.title = match[2];
}
_this2.trigger('data', event);
return;
}
match = /^#EXT-X-TARGETDURATION:?([0-9.]*)?/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'targetduration'
};
if (match[1]) {
event.duration = parseInt(match[1], 10);
}
_this2.trigger('data', event);
return;
}
match = /^#ZEN-TOTAL-DURATION:?([0-9.]*)?/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'totalduration'
};
if (match[1]) {
event.duration = parseInt(match[1], 10);
}
_this2.trigger('data', event);
return;
}
match = /^#EXT-X-VERSION:?([0-9.]*)?/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'version'
};
if (match[1]) {
event.version = parseInt(match[1], 10);
}
_this2.trigger('data', event);
return;
}
match = /^#EXT-X-MEDIA-SEQUENCE:?(\-?[0-9.]*)?/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'media-sequence'
};
if (match[1]) {
event.number = parseInt(match[1], 10);
}
_this2.trigger('data', event);
return;
}
match = /^#EXT-X-DISCONTINUITY-SEQUENCE:?(\-?[0-9.]*)?/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'discontinuity-sequence'
};
if (match[1]) {
event.number = parseInt(match[1], 10);
}
_this2.trigger('data', event);
return;
}
match = /^#EXT-X-PLAYLIST-TYPE:?(.*)?$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'playlist-type'
};
if (match[1]) {
event.playlistType = match[1];
}
_this2.trigger('data', event);
return;
}
match = /^#EXT-X-BYTERANGE:?([0-9.]*)?@?([0-9.]*)?/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'byterange'
};
if (match[1]) {
event.length = parseInt(match[1], 10);
}
if (match[2]) {
event.offset = parseInt(match[2], 10);
}
_this2.trigger('data', event);
return;
}
match = /^#EXT-X-ALLOW-CACHE:?(YES|NO)?/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'allow-cache'
};
if (match[1]) {
event.allowed = !/NO/.test(match[1]);
}
_this2.trigger('data', event);
return;
}
match = /^#EXT-X-MAP:?(.*)$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'map'
};
if (match[1]) {
var attributes = parseAttributes(match[1]);
if (attributes.URI) {
event.uri = attributes.URI;
}
if (attributes.BYTERANGE) {
var _attributes$BYTERANGE = attributes.BYTERANGE.split('@'),
length = _attributes$BYTERANGE[0],
offset = _attributes$BYTERANGE[1];
event.byterange = {};
if (length) {
event.byterange.length = parseInt(length, 10);
}
if (offset) {
event.byterange.offset = parseInt(offset, 10);
}
}
}
_this2.trigger('data', event);
return;
}
match = /^#EXT-X-STREAM-INF:?(.*)$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'stream-inf'
};
if (match[1]) {
event.attributes = parseAttributes(match[1]);
if (event.attributes.RESOLUTION) {
var split = event.attributes.RESOLUTION.split('x');
var resolution = {};
if (split[0]) {
resolution.width = parseInt(split[0], 10);
}
if (split[1]) {
resolution.height = parseInt(split[1], 10);
}
event.attributes.RESOLUTION = resolution;
}
if (event.attributes.BANDWIDTH) {
event.attributes.BANDWIDTH = parseInt(event.attributes.BANDWIDTH, 10);
}
if (event.attributes['PROGRAM-ID']) {
event.attributes['PROGRAM-ID'] = parseInt(event.attributes['PROGRAM-ID'], 10);
}
}
_this2.trigger('data', event);
return;
}
match = /^#EXT-X-MEDIA:?(.*)$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'media'
};
if (match[1]) {
event.attributes = parseAttributes(match[1]);
}
_this2.trigger('data', event);
return;
}
match = /^#EXT-X-ENDLIST/.exec(newLine);
if (match) {
_this2.trigger('data', {
type: 'tag',
tagType: 'endlist'
});
return;
}
match = /^#EXT-X-DISCONTINUITY/.exec(newLine);
if (match) {
_this2.trigger('data', {
type: 'tag',
tagType: 'discontinuity'
});
return;
}
match = /^#EXT-X-PROGRAM-DATE-TIME:?(.*)$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'program-date-time'
};
if (match[1]) {
event.dateTimeString = match[1];
event.dateTimeObject = new Date(match[1]);
}
_this2.trigger('data', event);
return;
}
match = /^#EXT-X-KEY:?(.*)$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'key'
};
if (match[1]) {
event.attributes = parseAttributes(match[1]); // parse the IV string into a Uint32Array
if (event.attributes.IV) {
if (event.attributes.IV.substring(0, 2).toLowerCase() === '0x') {
event.attributes.IV = event.attributes.IV.substring(2);
}
event.attributes.IV = event.attributes.IV.match(/.{8}/g);
event.attributes.IV[0] = parseInt(event.attributes.IV[0], 16);
event.attributes.IV[1] = parseInt(event.attributes.IV[1], 16);
event.attributes.IV[2] = parseInt(event.attributes.IV[2], 16);
event.attributes.IV[3] = parseInt(event.attributes.IV[3], 16);
event.attributes.IV = new Uint32Array(event.attributes.IV);
}
}
_this2.trigger('data', event);
return;
}
match = /^#EXT-X-START:?(.*)$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'start'
};
if (match[1]) {
event.attributes = parseAttributes(match[1]);
event.attributes['TIME-OFFSET'] = parseFloat(event.attributes['TIME-OFFSET']);
event.attributes.PRECISE = /YES/.test(event.attributes.PRECISE);
}
_this2.trigger('data', event);
return;
}
match = /^#EXT-X-CUE-OUT-CONT:?(.*)?$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'cue-out-cont'
};
if (match[1]) {
event.data = match[1];
} else {
event.data = '';
}
_this2.trigger('data', event);
return;
}
match = /^#EXT-X-CUE-OUT:?(.*)?$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'cue-out'
};
if (match[1]) {
event.data = match[1];
} else {
event.data = '';
}
_this2.trigger('data', event);
return;
}
match = /^#EXT-X-CUE-IN:?(.*)?$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'cue-in'
};
if (match[1]) {
event.data = match[1];
} else {
event.data = '';
}
_this2.trigger('data', event);
return;
} // unknown tag type
_this2.trigger('data', {
type: 'tag',
data: newLine.slice(4)
});
});
}
/**
* Add a parser for custom headers
*
* @param {Object} options a map of options for the added parser
* @param {RegExp} options.expression a regular expression to match the custom header
* @param {string} options.customType the custom type to register to the output
* @param {Function} [options.dataParser] function to parse the line into an object
* @param {boolean} [options.segment] should tag data be attached to the segment object
*/
;
_proto.addParser = function addParser(_ref) {
var _this3 = this;
var expression = _ref.expression,
customType = _ref.customType,
dataParser = _ref.dataParser,
segment = _ref.segment;
if (typeof dataParser !== 'function') {
dataParser = function dataParser(line) {
return line;
};
}
this.customParsers.push(function (line) {
var match = expression.exec(line);
if (match) {
_this3.trigger('data', {
type: 'custom',
data: dataParser(line),
customType: customType,
segment: segment
});
return true;
}
});
}
/**
* Add a custom header mapper
*
* @param {Object} options
* @param {RegExp} options.expression a regular expression to match the custom header
* @param {Function} options.map function to translate tag into a different tag
*/
;
_proto.addTagMapper = function addTagMapper(_ref2) {
var expression = _ref2.expression,
map = _ref2.map;
var mapFn = function mapFn(line) {
if (expression.test(line)) {
return map(line);
}
return line;
};
this.tagMappers.push(mapFn);
};
return ParseStream;
}(Stream);
/**
* A parser for M3U8 files. The current interpretation of the input is
* exposed as a property `manifest` on parser objects. It's just two lines to
* create and parse a manifest once you have the contents available as a string:
*
* ```js
* var parser = new m3u8.Parser();
* parser.push(xhr.responseText);
* ```
*
* New input can later be applied to update the manifest object by calling
* `push` again.
*
* The parser attempts to create a usable manifest object even if the
* underlying input is somewhat nonsensical. It emits `info` and `warning`
* events during the parse if it encounters input that seems invalid or
* requires some property of the manifest object to be defaulted.
*
* @class Parser
* @extends Stream
*/
var Parser = /*#__PURE__*/function (_Stream) {
inheritsLoose(Parser, _Stream);
function Parser() {
var _this;
_this = _Stream.call(this) || this;
_this.lineStream = new LineStream();
_this.parseStream = new ParseStream();
_this.lineStream.pipe(_this.parseStream);
/* eslint-disable consistent-this */
var self = assertThisInitialized(_this);
/* eslint-enable consistent-this */
var uris = [];
var currentUri = {}; // if specified, the active EXT-X-MAP definition
var currentMap; // if specified, the active decryption key
var _key;
var noop = function noop() {};
var defaultMediaGroups = {
'AUDIO': {},
'VIDEO': {},
'CLOSED-CAPTIONS': {},
'SUBTITLES': {}
}; // This is the Widevine UUID from DASH IF IOP. The same exact string is
// used in MPDs with Widevine encrypted streams.
var widevineUuid = 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed'; // group segments into numbered timelines delineated by discontinuities
var currentTimeline = 0; // the manifest is empty until the parse stream begins delivering data
_this.manifest = {
allowCache: true,
discontinuityStarts: [],
segments: []
}; // keep track of the last seen segment's byte range end, as segments are not required
// to provide the offset, in which case it defaults to the next byte after the
// previous segment
var lastByterangeEnd = 0; // update the manifest with the m3u8 entry from the parse stream
_this.parseStream.on('data', function (entry) {
var mediaGroup;
var rendition;
({
tag: function tag() {
// switch based on the tag type
(({
'allow-cache': function allowCache() {
this.manifest.allowCache = entry.allowed;
if (!('allowed' in entry)) {
this.trigger('info', {
message: 'defaulting allowCache to YES'
});
this.manifest.allowCache = true;
}
},
byterange: function byterange() {
var byterange = {};
if ('length' in entry) {
currentUri.byterange = byterange;
byterange.length = entry.length;
if (!('offset' in entry)) {
/*
* From the latest spec (as of this writing):
* https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.2
*
* Same text since EXT-X-BYTERANGE's introduction in draft 7:
* https://tools.ietf.org/html/draft-pantos-http-live-streaming-07#section-3.3.1)
*
* "If o [offset] is not present, the sub-range begins at the next byte
* following the sub-range of the previous media segment."
*/
entry.offset = lastByterangeEnd;
}
}
if ('offset' in entry) {
currentUri.byterange = byterange;
byterange.offset = entry.offset;
}
lastByterangeEnd = byterange.offset + byterange.length;
},
endlist: function endlist() {
this.manifest.endList = true;
},
inf: function inf() {
if (!('mediaSequence' in this.manifest)) {
this.manifest.mediaSequence = 0;
this.trigger('info', {
message: 'defaulting media sequence to zero'
});
}
if (!('discontinuitySequence' in this.manifest)) {
this.manifest.discontinuitySequence = 0;
this.trigger('info', {
message: 'defaulting discontinuity sequence to zero'
});
}
if (entry.duration > 0) {
currentUri.duration = entry.duration;
}
if (entry.duration === 0) {
currentUri.duration = 0.01;
this.trigger('info', {
message: 'updating zero segment duration to a small value'
});
}
this.manifest.segments = uris;
},
key: function key() {
if (!entry.attributes) {
this.trigger('warn', {
message: 'ignoring key declaration without attribute list'
});
return;
} // clear the active encryption key
if (entry.attributes.METHOD === 'NONE') {
_key = null;
return;
}
if (!entry.attributes.URI) {
this.trigger('warn', {
message: 'ignoring key declaration without URI'
});
return;
} // check if the content is encrypted for Widevine
// Widevine/HLS spec: https://storage.googleapis.com/wvdocs/Widevine_DRM_HLS.pdf
if (entry.attributes.KEYFORMAT === widevineUuid) {
var VALID_METHODS = ['SAMPLE-AES', 'SAMPLE-AES-CTR', 'SAMPLE-AES-CENC'];
if (VALID_METHODS.indexOf(entry.attributes.METHOD) === -1) {
this.trigger('warn', {
message: 'invalid key method provided for Widevine'
});
return;
}
if (entry.attributes.METHOD === 'SAMPLE-AES-CENC') {
this.trigger('warn', {
message: 'SAMPLE-AES-CENC is deprecated, please use SAMPLE-AES-CTR instead'
});
}
if (entry.attributes.URI.substring(0, 23) !== 'data:text/plain;base64,') {
this.trigger('warn', {
message: 'invalid key URI provided for Widevine'
});
return;
}
if (!(entry.attributes.KEYID && entry.attributes.KEYID.substring(0, 2) === '0x')) {
this.trigger('warn', {
message: 'invalid key ID provided for Widevine'
});
return;
} // if Widevine key attributes are valid, store them as `contentProtection`
// on the manifest to emulate Widevine tag structure in a DASH mpd
this.manifest.contentProtection = {
'com.widevine.alpha': {
attributes: {
schemeIdUri: entry.attributes.KEYFORMAT,
// remove '0x' from the key id string
keyId: entry.attributes.KEYID.substring(2)
},
// decode the base64-encoded PSSH box
pssh: decodeB64ToUint8Array(entry.attributes.URI.split(',')[1])
}
};
return;
}
if (!entry.attributes.METHOD) {
this.trigger('warn', {
message: 'defaulting key method to AES-128'
});
} // setup an encryption key for upcoming segments
_key = {
method: entry.attributes.METHOD || 'AES-128',
uri: entry.attributes.URI
};
if (typeof entry.attributes.IV !== 'undefined') {
_key.iv = entry.attributes.IV;
}
},
'media-sequence': function mediaSequence() {
if (!isFinite(entry.number)) {
this.trigger('warn', {
message: 'ignoring invalid media sequence: ' + entry.number
});
return;
}
this.manifest.mediaSequence = entry.number;
},
'discontinuity-sequence': function discontinuitySequence() {
if (!isFinite(entry.number)) {
this.trigger('warn', {
message: 'ignoring invalid discontinuity sequence: ' + entry.number
});
return;
}
this.manifest.discontinuitySequence = entry.number;
currentTimeline = entry.number;
},
'playlist-type': function playlistType() {
if (!/VOD|EVENT/.test(entry.playlistType)) {
this.trigger('warn', {
message: 'ignoring unknown playlist type: ' + entry.playlist
});
return;
}
this.manifest.playlistType = entry.playlistType;
},
map: function map() {
currentMap = {};
if (entry.uri) {
currentMap.uri = entry.uri;
}
if (entry.byterange) {
currentMap.byterange = entry.byterange;
}
},
'stream-inf': function streamInf() {
this.manifest.playlists = uris;
this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;
if (!entry.attributes) {
this.trigger('warn', {
message: 'ignoring empty stream-inf attributes'
});
return;
}
if (!currentUri.attributes) {
currentUri.attributes = {};
}
_extends_1(currentUri.attributes, entry.attributes);
},
media: function media() {
this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;
if (!(entry.attributes && entry.attributes.TYPE && entry.attributes['GROUP-ID'] && entry.attributes.NAME)) {
this.trigger('warn', {
message: 'ignoring incomplete or missing media group'
});
return;
} // find the media group, creating defaults as necessary
var mediaGroupType = this.manifest.mediaGroups[entry.attributes.TYPE];
mediaGroupType[entry.attributes['GROUP-ID']] = mediaGroupType[entry.attributes['GROUP-ID']] || {};
mediaGroup = mediaGroupType[entry.attributes['GROUP-ID']]; // collect the rendition metadata
rendition = {
default: /yes/i.test(entry.attributes.DEFAULT)
};
if (rendition.default) {
rendition.autoselect = true;
} else {
rendition.autoselect = /yes/i.test(entry.attributes.AUTOSELECT);
}
if (entry.attributes.LANGUAGE) {
rendition.language = entry.attributes.LANGUAGE;
}
if (entry.attributes.URI) {
rendition.uri = entry.attributes.URI;
}
if (entry.attributes['INSTREAM-ID']) {
rendition.instreamId = entry.attributes['INSTREAM-ID'];
}
if (entry.attributes.CHARACTERISTICS) {
rendition.characteristics = entry.attributes.CHARACTERISTICS;
}
if (entry.attributes.FORCED) {
rendition.forced = /yes/i.test(entry.attributes.FORCED);
} // insert the new rendition
mediaGroup[entry.attributes.NAME] = rendition;
},
discontinuity: function discontinuity() {
currentTimeline += 1;
currentUri.discontinuity = true;
this.manifest.discontinuityStarts.push(uris.length);
},
'program-date-time': function programDateTime() {
if (typeof this.manifest.dateTimeString === 'undefined') {
// PROGRAM-DATE-TIME is a media-segment tag, but for backwards
// compatibility, we add the first occurence of the PROGRAM-DATE-TIME tag
// to the manifest object
// TODO: Consider removing this in future major version
this.manifest.dateTimeString = entry.dateTimeString;
this.manifest.dateTimeObject = entry.dateTimeObject;
}
currentUri.dateTimeString = entry.dateTimeString;
currentUri.dateTimeObject = entry.dateTimeObject;
},
targetduration: function targetduration() {
if (!isFinite(entry.duration) || entry.duration < 0) {
this.trigger('warn', {
message: 'ignoring invalid target duration: ' + entry.duration
});
return;
}
this.manifest.targetDuration = entry.duration;
},
totalduration: function totalduration() {
if (!isFinite(entry.duration) || entry.duration < 0) {
this.trigger('warn', {
message: 'ignoring invalid total duration: ' + entry.duration
});
return;
}
this.manifest.totalDuration = entry.duration;
},
start: function start() {
if (!entry.attributes || isNaN(entry.attributes['TIME-OFFSET'])) {
this.trigger('warn', {
message: 'ignoring start declaration without appropriate attribute list'
});
return;
}
this.manifest.start = {
timeOffset: entry.attributes['TIME-OFFSET'],
precise: entry.attributes.PRECISE
};
},
'cue-out': function cueOut() {
currentUri.cueOut = entry.data;
},
'cue-out-cont': function cueOutCont() {
currentUri.cueOutCont = entry.data;
},
'cue-in': function cueIn() {
currentUri.cueIn = entry.data;
}
})[entry.tagType] || noop).call(self);
},
uri: function uri() {
currentUri.uri = entry.uri;
uris.push(currentUri); // if no explicit duration was declared, use the target duration
if (this.manifest.targetDuration && !('duration' in currentUri)) {
this.trigger('warn', {
message: 'defaulting segment duration to the target duration'
});
currentUri.duration = this.manifest.targetDuration;
} // annotate with encryption information, if necessary
if (_key) {
currentUri.key = _key;
}
currentUri.timeline = currentTimeline; // annotate with initialization segment information, if necessary
if (currentMap) {
currentUri.map = currentMap;
} // prepare for the next URI
currentUri = {};
},
comment: function comment() {// comments are not important for playback
},
custom: function custom() {
// if this is segment-level data attach the output to the segment
if (entry.segment) {
currentUri.custom = currentUri.custom || {};
currentUri.custom[entry.customType] = entry.data; // if this is manifest-level data attach to the top level manifest object
} else {
this.manifest.custom = this.manifest.custom || {};
this.manifest.custom[entry.customType] = entry.data;
}
}
})[entry.type].call(self);
});
return _this;
}
/**
* Parse the input string and update the manifest object.
*
* @param {string} chunk a potentially incomplete portion of the manifest
*/
var _proto = Parser.prototype;
_proto.push = function push(chunk) {
this.lineStream.push(chunk);
}
/**
* Flush any remaining input. This can be handy if the last line of an M3U8
* manifest did not contain a trailing newline but the file has been
* completely received.
*/
;
_proto.end = function end() {
// flush any buffered input
this.lineStream.push('\n');
}
/**
* Add an additional parser for non-standard tags
*
* @param {Object} options a map of options for the added parser
* @param {RegExp} options.expression a regular expression to match the custom header
* @param {string} options.type the type to register to the output
* @param {Function} [options.dataParser] function to parse the line into an object
* @param {boolean} [options.segment] should tag data be attached to the segment object
*/
;
_proto.addParser = function addParser(options) {
this.parseStream.addParser(options);
}
/**
* Add a custom header mapper
*
* @param {Object} options
* @param {RegExp} options.expression a regular expression to match the cus