rx-player
Version:
Canal+ HTML5 Video Player
273 lines (272 loc) • 14.1 kB
JavaScript
/**
* Copyright 2015 CANAL+ Group
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import noop from "../../../../../../utils/noop";
import { parseFloatOrBool, parseString } from "../utils";
import { generateBaseUrlAttrParser } from "./BaseURL";
import { generateContentComponentAttrParser } from "./ContentComponent";
import { generateContentProtectionAttrParser } from "./ContentProtection";
import { generateLabelElementParser } from "./Label";
import { generateRepresentationAttrParser, generateRepresentationChildrenParser, } from "./Representation";
import { generateSchemeAttrParser } from "./Scheme";
import { generateSegmentBaseAttrParser } from "./SegmentBase";
import { generateSegmentListChildrenParser } from "./SegmentList";
import { generateSegmentTemplateAttrParser } from "./SegmentTemplate";
/**
* Generate a "children parser" once inside a `AdaptationSet` node.
* @param {Object} adaptationSetChildren
* @param {WebAssembly.Memory} linearMemory
* @param {ParsersStack} parsersStack
* @returns {Function}
*/
export function generateAdaptationSetChildrenParser(adaptationSetChildren, linearMemory, parsersStack) {
return function onRootChildren(nodeId) {
switch (nodeId) {
case 8 /* TagName.Accessibility */: {
const accessibility = {};
if (adaptationSetChildren.accessibilities === undefined) {
adaptationSetChildren.accessibilities = [];
}
adaptationSetChildren.accessibilities.push(accessibility);
const schemeAttrParser = generateSchemeAttrParser(accessibility, linearMemory);
parsersStack.pushParsers(nodeId, noop, schemeAttrParser);
break;
}
case 15 /* TagName.BaseURL */: {
const baseUrl = { value: "", attributes: {} };
adaptationSetChildren.baseURLs.push(baseUrl);
const attributeParser = generateBaseUrlAttrParser(baseUrl, linearMemory);
parsersStack.pushParsers(nodeId, noop, attributeParser);
break;
}
case 9 /* TagName.ContentComponent */: {
const contentComponent = {};
adaptationSetChildren.contentComponent = contentComponent;
parsersStack.pushParsers(nodeId, noop, generateContentComponentAttrParser(contentComponent, linearMemory));
break;
}
case 10 /* TagName.ContentProtection */: {
const contentProtection = {
children: { cencPssh: [] },
attributes: {},
};
if (adaptationSetChildren.contentProtections === undefined) {
adaptationSetChildren.contentProtections = [];
}
adaptationSetChildren.contentProtections.push(contentProtection);
const contentProtAttrParser = generateContentProtectionAttrParser(contentProtection, linearMemory);
parsersStack.pushParsers(nodeId, noop, contentProtAttrParser);
break;
}
case 11 /* TagName.EssentialProperty */: {
const essentialProperty = {};
if (adaptationSetChildren.essentialProperties === undefined) {
adaptationSetChildren.essentialProperties = [];
}
adaptationSetChildren.essentialProperties.push(essentialProperty);
const childrenParser = noop; // EssentialProperty have no sub-element
const attributeParser = generateSchemeAttrParser(essentialProperty, linearMemory);
parsersStack.pushParsers(nodeId, childrenParser, attributeParser);
break;
}
case 19 /* TagName.InbandEventStream */: {
const inbandEvent = {};
if (adaptationSetChildren.inbandEventStreams === undefined) {
adaptationSetChildren.inbandEventStreams = [];
}
adaptationSetChildren.inbandEventStreams.push(inbandEvent);
const childrenParser = noop; // InbandEventStream have no sub-element
const attributeParser = generateSchemeAttrParser(inbandEvent, linearMemory);
parsersStack.pushParsers(nodeId, childrenParser, attributeParser);
break;
}
case 7 /* TagName.Representation */: {
const representationObj = {
children: { baseURLs: [] },
attributes: {},
};
adaptationSetChildren.representations.push(representationObj);
const childrenParser = generateRepresentationChildrenParser(representationObj.children, linearMemory, parsersStack);
const attributeParser = generateRepresentationAttrParser(representationObj.attributes, linearMemory);
parsersStack.pushParsers(nodeId, childrenParser, attributeParser);
break;
}
case 12 /* TagName.Role */: {
const role = {};
if (adaptationSetChildren.roles === undefined) {
adaptationSetChildren.roles = [];
}
adaptationSetChildren.roles.push(role);
const attributeParser = generateSchemeAttrParser(role, linearMemory);
parsersStack.pushParsers(nodeId, noop, attributeParser);
break;
}
case 13 /* TagName.SupplementalProperty */: {
const supplementalProperty = {};
if (adaptationSetChildren.supplementalProperties === undefined) {
adaptationSetChildren.supplementalProperties = [];
}
adaptationSetChildren.supplementalProperties.push(supplementalProperty);
const attributeParser = generateSchemeAttrParser(supplementalProperty, linearMemory);
parsersStack.pushParsers(nodeId, noop, attributeParser);
break;
}
case 17 /* TagName.SegmentBase */: {
const segmentBaseObj = {};
adaptationSetChildren.segmentBase = segmentBaseObj;
const attributeParser = generateSegmentBaseAttrParser(segmentBaseObj, linearMemory);
parsersStack.pushParsers(nodeId, noop, attributeParser);
break;
}
case 18 /* TagName.SegmentList */: {
const segmentListObj = {
list: [],
};
adaptationSetChildren.segmentList = segmentListObj;
const childrenParser = generateSegmentListChildrenParser(segmentListObj, linearMemory, parsersStack);
// Re-use SegmentBase attribute parse as we should have the same attributes
const attributeParser = generateSegmentBaseAttrParser(segmentListObj, linearMemory);
parsersStack.pushParsers(nodeId, childrenParser, attributeParser);
break;
}
case 16 /* TagName.SegmentTemplate */: {
const stObj = {};
adaptationSetChildren.segmentTemplate = stObj;
parsersStack.pushParsers(nodeId, noop, // SegmentTimeline as treated like an attribute
generateSegmentTemplateAttrParser(stObj, linearMemory));
break;
}
case 21 /* TagName.Label */: {
parsersStack.pushParsers(nodeId, noop, // Label as treated like an attribute
generateLabelElementParser(adaptationSetChildren, linearMemory));
break;
}
default:
// Allows to make sure we're not mistakenly closing a re-opened
// tag.
parsersStack.pushParsers(nodeId, noop, noop);
break;
}
};
}
/**
* @param {Object} adaptationAttrs
* @param {WebAssembly.Memory} linearMemory
* @returns {Function}
*/
export function generateAdaptationSetAttrParser(adaptationAttrs, linearMemory) {
const textDecoder = new TextDecoder();
return function onAdaptationSetAttribute(attr, ptr, len) {
const dataView = new DataView(linearMemory.buffer);
switch (attr) {
case 0 /* AttributeName.Id */:
adaptationAttrs.id = parseString(textDecoder, linearMemory.buffer, ptr, len);
break;
case 48 /* AttributeName.Group */:
adaptationAttrs.group = dataView.getFloat64(ptr, true);
break;
case 60 /* AttributeName.Language */:
adaptationAttrs.language = parseString(textDecoder, linearMemory.buffer, ptr, len);
break;
case 61 /* AttributeName.ContentType */:
adaptationAttrs.contentType = parseString(textDecoder, linearMemory.buffer, ptr, len);
break;
case 62 /* AttributeName.Par */:
adaptationAttrs.par = parseString(textDecoder, linearMemory.buffer, ptr, len);
break;
case 53 /* AttributeName.MinBandwidth */:
adaptationAttrs.minBitrate = dataView.getFloat64(ptr, true);
break;
case 49 /* AttributeName.MaxBandwidth */:
adaptationAttrs.maxBitrate = dataView.getFloat64(ptr, true);
break;
case 56 /* AttributeName.MinWidth */:
adaptationAttrs.minWidth = dataView.getFloat64(ptr, true);
break;
case 52 /* AttributeName.MaxWidth */:
adaptationAttrs.maxWidth = dataView.getFloat64(ptr, true);
break;
case 55 /* AttributeName.MinHeight */:
adaptationAttrs.minHeight = dataView.getFloat64(ptr, true);
break;
case 51 /* AttributeName.MaxHeight */:
adaptationAttrs.maxHeight = dataView.getFloat64(ptr, true);
break;
case 54 /* AttributeName.MinFrameRate */:
adaptationAttrs.minFrameRate = dataView.getFloat64(ptr, true);
break;
case 50 /* AttributeName.MaxFrameRate */:
adaptationAttrs.maxFrameRate = dataView.getFloat64(ptr, true);
break;
case 57 /* AttributeName.SelectionPriority */:
adaptationAttrs.selectionPriority = dataView.getFloat64(ptr, true);
break;
case 58 /* AttributeName.SegmentAlignment */:
adaptationAttrs.segmentAlignment = parseFloatOrBool(dataView.getFloat64(ptr, true));
break;
case 59 /* AttributeName.SubsegmentAlignment */:
adaptationAttrs.subsegmentAlignment = parseFloatOrBool(dataView.getFloat64(ptr, true));
break;
case 32 /* AttributeName.BitstreamSwitching */:
adaptationAttrs.bitstreamSwitching = dataView.getFloat64(ptr, true) !== 0;
break;
case 3 /* AttributeName.AudioSamplingRate */:
adaptationAttrs.audioSamplingRate = parseString(textDecoder, linearMemory.buffer, ptr, len);
break;
case 4 /* AttributeName.Codecs */:
adaptationAttrs.codecs = parseString(textDecoder, linearMemory.buffer, ptr, len);
break;
case 77 /* AttributeName.SupplementalCodecs */:
adaptationAttrs.supplementalCodecs = parseString(textDecoder, linearMemory.buffer, ptr, len);
break;
case 2 /* AttributeName.Profiles */:
adaptationAttrs.profiles = parseString(textDecoder, linearMemory.buffer, ptr, len);
break;
case 12 /* AttributeName.SegmentProfiles */:
adaptationAttrs.segmentProfiles = parseString(textDecoder, linearMemory.buffer, ptr, len);
break;
case 11 /* AttributeName.MimeType */:
adaptationAttrs.mimeType = parseString(textDecoder, linearMemory.buffer, ptr, len);
break;
case 5 /* AttributeName.CodingDependency */:
adaptationAttrs.codingDependency = dataView.getFloat64(ptr, true) !== 0;
break;
case 6 /* AttributeName.FrameRate */:
adaptationAttrs.frameRate = dataView.getFloat64(ptr, true);
break;
case 7 /* AttributeName.Height */:
adaptationAttrs.height = dataView.getFloat64(ptr, true);
break;
case 8 /* AttributeName.Width */:
adaptationAttrs.width = dataView.getFloat64(ptr, true);
break;
case 9 /* AttributeName.MaxPlayoutRate */:
adaptationAttrs.maxPlayoutRate = dataView.getFloat64(ptr, true);
break;
case 10 /* AttributeName.MaxSAPPeriod */:
adaptationAttrs.maximumSAPPeriod = dataView.getFloat64(ptr, true);
break;
case 43 /* AttributeName.AvailabilityTimeOffset */:
adaptationAttrs.availabilityTimeOffset = dataView.getFloat64(ptr, true);
break;
case 22 /* AttributeName.AvailabilityTimeComplete */:
adaptationAttrs.availabilityTimeComplete = dataView.getUint8(0) === 0;
break;
// TODO
// case AttributeName.StartsWithSap:
// adaptationAttrs.startsWithSap = dataView.getFloat64(ptr, true);
}
};
}