mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-24 17:35:10 +03:00
Jacob Trimble
b512db87dd
This is part of a change to convert all usages of 'var' with either 'let' or 'const'. This takes a conservative approach for 'const' where it will only be used for aliases and storing the "original" values in tests. Change-Id: I6a329d28e13a81c9f7136737518c6bb8fa18402e
100 lines
2.6 KiB
JavaScript
100 lines
2.6 KiB
JavaScript
/**
|
|
* @license
|
|
* Copyright 2016 Google Inc.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
goog.provide('shaka.text.Mp4TtmlParser');
|
|
|
|
goog.require('shaka.text.TextEngine');
|
|
goog.require('shaka.text.TtmlTextParser');
|
|
goog.require('shaka.util.Error');
|
|
goog.require('shaka.util.Mp4Parser');
|
|
|
|
|
|
|
|
/**
|
|
* @struct
|
|
* @constructor
|
|
* @implements {shakaExtern.TextParser}
|
|
*/
|
|
shaka.text.Mp4TtmlParser = function() {
|
|
/**
|
|
* @type {!shakaExtern.TextParser}
|
|
* @private
|
|
*/
|
|
this.parser_ = new shaka.text.TtmlTextParser();
|
|
};
|
|
|
|
|
|
/** @override **/
|
|
shaka.text.Mp4TtmlParser.prototype.parseInit = function(data) {
|
|
const Mp4Parser = shaka.util.Mp4Parser;
|
|
|
|
let sawSTPP = false;
|
|
|
|
new Mp4Parser()
|
|
.box('moov', Mp4Parser.children)
|
|
.box('trak', Mp4Parser.children)
|
|
.box('mdia', Mp4Parser.children)
|
|
.box('minf', Mp4Parser.children)
|
|
.box('stbl', Mp4Parser.children)
|
|
.fullBox('stsd', Mp4Parser.sampleDescription)
|
|
.box('stpp', function(box) {
|
|
sawSTPP = true;
|
|
box.parser.stop();
|
|
}).parse(data);
|
|
|
|
if (!sawSTPP) {
|
|
throw new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.TEXT,
|
|
shaka.util.Error.Code.INVALID_MP4_TTML);
|
|
}
|
|
};
|
|
|
|
|
|
/** @override **/
|
|
shaka.text.Mp4TtmlParser.prototype.parseMedia = function(data, time) {
|
|
const Mp4Parser = shaka.util.Mp4Parser;
|
|
|
|
let sawMDAT = false;
|
|
let payload = [];
|
|
|
|
new Mp4Parser()
|
|
.box('mdat', Mp4Parser.allData(function(data) {
|
|
sawMDAT = true;
|
|
// Join this to any previous payload, in case the mp4 has multiple
|
|
// mdats.
|
|
payload = payload.concat(this.parser_.parseMedia(data, time));
|
|
}.bind(this))).parse(data);
|
|
|
|
if (!sawMDAT) {
|
|
throw new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.TEXT,
|
|
shaka.util.Error.Code.INVALID_MP4_TTML);
|
|
}
|
|
|
|
return payload;
|
|
};
|
|
|
|
|
|
shaka.text.TextEngine.registerParser(
|
|
'application/mp4; codecs="stpp"',
|
|
shaka.text.Mp4TtmlParser);
|
|
shaka.text.TextEngine.registerParser(
|
|
'application/mp4; codecs="stpp.TTML.im1t"',
|
|
shaka.text.Mp4TtmlParser);
|