First release
This commit is contained in:
Owen Quinlan
commit
fa6c85266e
2339 changed files with 761050 additions and 0 deletions
324
node_modules/mux.js/cjs/partial/transmuxer.js
generated
vendored
Normal file
324
node_modules/mux.js/cjs/partial/transmuxer.js
generated
vendored
Normal file
|
|
@ -0,0 +1,324 @@
|
|||
"use strict";
|
||||
|
||||
var Stream = require('../utils/stream.js');
|
||||
|
||||
var m2ts = require('../m2ts/m2ts.js');
|
||||
|
||||
var codecs = require('../codecs/index.js');
|
||||
|
||||
var AudioSegmentStream = require('./audio-segment-stream.js');
|
||||
|
||||
var VideoSegmentStream = require('./video-segment-stream.js');
|
||||
|
||||
var trackInfo = require('../mp4/track-decode-info.js');
|
||||
|
||||
var isLikelyAacData = require('../aac/utils').isLikelyAacData;
|
||||
|
||||
var AdtsStream = require('../codecs/adts');
|
||||
|
||||
var AacStream = require('../aac/index');
|
||||
|
||||
var clock = require('../utils/clock');
|
||||
|
||||
var createPipeline = function createPipeline(object) {
|
||||
object.prototype = new Stream();
|
||||
object.prototype.init.call(object);
|
||||
return object;
|
||||
};
|
||||
|
||||
var tsPipeline = function tsPipeline(options) {
|
||||
var pipeline = {
|
||||
type: 'ts',
|
||||
tracks: {
|
||||
audio: null,
|
||||
video: null
|
||||
},
|
||||
packet: new m2ts.TransportPacketStream(),
|
||||
parse: new m2ts.TransportParseStream(),
|
||||
elementary: new m2ts.ElementaryStream(),
|
||||
timestampRollover: new m2ts.TimestampRolloverStream(),
|
||||
adts: new codecs.Adts(),
|
||||
h264: new codecs.h264.H264Stream(),
|
||||
captionStream: new m2ts.CaptionStream(options),
|
||||
metadataStream: new m2ts.MetadataStream()
|
||||
};
|
||||
pipeline.headOfPipeline = pipeline.packet; // Transport Stream
|
||||
|
||||
pipeline.packet.pipe(pipeline.parse).pipe(pipeline.elementary).pipe(pipeline.timestampRollover); // H264
|
||||
|
||||
pipeline.timestampRollover.pipe(pipeline.h264); // Hook up CEA-608/708 caption stream
|
||||
|
||||
pipeline.h264.pipe(pipeline.captionStream);
|
||||
pipeline.timestampRollover.pipe(pipeline.metadataStream); // ADTS
|
||||
|
||||
pipeline.timestampRollover.pipe(pipeline.adts);
|
||||
pipeline.elementary.on('data', function (data) {
|
||||
if (data.type !== 'metadata') {
|
||||
return;
|
||||
}
|
||||
|
||||
for (var i = 0; i < data.tracks.length; i++) {
|
||||
if (!pipeline.tracks[data.tracks[i].type]) {
|
||||
pipeline.tracks[data.tracks[i].type] = data.tracks[i];
|
||||
pipeline.tracks[data.tracks[i].type].timelineStartInfo.baseMediaDecodeTime = options.baseMediaDecodeTime;
|
||||
}
|
||||
}
|
||||
|
||||
if (pipeline.tracks.video && !pipeline.videoSegmentStream) {
|
||||
pipeline.videoSegmentStream = new VideoSegmentStream(pipeline.tracks.video, options);
|
||||
pipeline.videoSegmentStream.on('timelineStartInfo', function (timelineStartInfo) {
|
||||
if (pipeline.tracks.audio && !options.keepOriginalTimestamps) {
|
||||
pipeline.audioSegmentStream.setEarliestDts(timelineStartInfo.dts - options.baseMediaDecodeTime);
|
||||
}
|
||||
});
|
||||
pipeline.videoSegmentStream.on('timingInfo', pipeline.trigger.bind(pipeline, 'videoTimingInfo'));
|
||||
pipeline.videoSegmentStream.on('data', function (data) {
|
||||
pipeline.trigger('data', {
|
||||
type: 'video',
|
||||
data: data
|
||||
});
|
||||
});
|
||||
pipeline.videoSegmentStream.on('done', pipeline.trigger.bind(pipeline, 'done'));
|
||||
pipeline.videoSegmentStream.on('partialdone', pipeline.trigger.bind(pipeline, 'partialdone'));
|
||||
pipeline.videoSegmentStream.on('endedtimeline', pipeline.trigger.bind(pipeline, 'endedtimeline'));
|
||||
pipeline.h264.pipe(pipeline.videoSegmentStream);
|
||||
}
|
||||
|
||||
if (pipeline.tracks.audio && !pipeline.audioSegmentStream) {
|
||||
pipeline.audioSegmentStream = new AudioSegmentStream(pipeline.tracks.audio, options);
|
||||
pipeline.audioSegmentStream.on('data', function (data) {
|
||||
pipeline.trigger('data', {
|
||||
type: 'audio',
|
||||
data: data
|
||||
});
|
||||
});
|
||||
pipeline.audioSegmentStream.on('done', pipeline.trigger.bind(pipeline, 'done'));
|
||||
pipeline.audioSegmentStream.on('partialdone', pipeline.trigger.bind(pipeline, 'partialdone'));
|
||||
pipeline.audioSegmentStream.on('endedtimeline', pipeline.trigger.bind(pipeline, 'endedtimeline'));
|
||||
pipeline.audioSegmentStream.on('timingInfo', pipeline.trigger.bind(pipeline, 'audioTimingInfo'));
|
||||
pipeline.adts.pipe(pipeline.audioSegmentStream);
|
||||
} // emit pmt info
|
||||
|
||||
|
||||
pipeline.trigger('trackinfo', {
|
||||
hasAudio: !!pipeline.tracks.audio,
|
||||
hasVideo: !!pipeline.tracks.video
|
||||
});
|
||||
});
|
||||
pipeline.captionStream.on('data', function (caption) {
|
||||
var timelineStartPts;
|
||||
|
||||
if (pipeline.tracks.video) {
|
||||
timelineStartPts = pipeline.tracks.video.timelineStartInfo.pts || 0;
|
||||
} else {
|
||||
// This will only happen if we encounter caption packets before
|
||||
// video data in a segment. This is an unusual/unlikely scenario,
|
||||
// so we assume the timeline starts at zero for now.
|
||||
timelineStartPts = 0;
|
||||
} // Translate caption PTS times into second offsets into the
|
||||
// video timeline for the segment
|
||||
|
||||
|
||||
caption.startTime = clock.metadataTsToSeconds(caption.startPts, timelineStartPts, options.keepOriginalTimestamps);
|
||||
caption.endTime = clock.metadataTsToSeconds(caption.endPts, timelineStartPts, options.keepOriginalTimestamps);
|
||||
pipeline.trigger('caption', caption);
|
||||
});
|
||||
pipeline = createPipeline(pipeline);
|
||||
pipeline.metadataStream.on('data', pipeline.trigger.bind(pipeline, 'id3Frame'));
|
||||
return pipeline;
|
||||
};
|
||||
|
||||
var aacPipeline = function aacPipeline(options) {
|
||||
var pipeline = {
|
||||
type: 'aac',
|
||||
tracks: {
|
||||
audio: null
|
||||
},
|
||||
metadataStream: new m2ts.MetadataStream(),
|
||||
aacStream: new AacStream(),
|
||||
audioRollover: new m2ts.TimestampRolloverStream('audio'),
|
||||
timedMetadataRollover: new m2ts.TimestampRolloverStream('timed-metadata'),
|
||||
adtsStream: new AdtsStream(true)
|
||||
}; // set up the parsing pipeline
|
||||
|
||||
pipeline.headOfPipeline = pipeline.aacStream;
|
||||
pipeline.aacStream.pipe(pipeline.audioRollover).pipe(pipeline.adtsStream);
|
||||
pipeline.aacStream.pipe(pipeline.timedMetadataRollover).pipe(pipeline.metadataStream);
|
||||
pipeline.metadataStream.on('timestamp', function (frame) {
|
||||
pipeline.aacStream.setTimestamp(frame.timeStamp);
|
||||
});
|
||||
pipeline.aacStream.on('data', function (data) {
|
||||
if (data.type !== 'timed-metadata' && data.type !== 'audio' || pipeline.audioSegmentStream) {
|
||||
return;
|
||||
}
|
||||
|
||||
pipeline.tracks.audio = pipeline.tracks.audio || {
|
||||
timelineStartInfo: {
|
||||
baseMediaDecodeTime: options.baseMediaDecodeTime
|
||||
},
|
||||
codec: 'adts',
|
||||
type: 'audio'
|
||||
}; // hook up the audio segment stream to the first track with aac data
|
||||
|
||||
pipeline.audioSegmentStream = new AudioSegmentStream(pipeline.tracks.audio, options);
|
||||
pipeline.audioSegmentStream.on('data', function (data) {
|
||||
pipeline.trigger('data', {
|
||||
type: 'audio',
|
||||
data: data
|
||||
});
|
||||
});
|
||||
pipeline.audioSegmentStream.on('partialdone', pipeline.trigger.bind(pipeline, 'partialdone'));
|
||||
pipeline.audioSegmentStream.on('done', pipeline.trigger.bind(pipeline, 'done'));
|
||||
pipeline.audioSegmentStream.on('endedtimeline', pipeline.trigger.bind(pipeline, 'endedtimeline'));
|
||||
pipeline.audioSegmentStream.on('timingInfo', pipeline.trigger.bind(pipeline, 'audioTimingInfo')); // Set up the final part of the audio pipeline
|
||||
|
||||
pipeline.adtsStream.pipe(pipeline.audioSegmentStream);
|
||||
pipeline.trigger('trackinfo', {
|
||||
hasAudio: !!pipeline.tracks.audio,
|
||||
hasVideo: !!pipeline.tracks.video
|
||||
});
|
||||
}); // set the pipeline up as a stream before binding to get access to the trigger function
|
||||
|
||||
pipeline = createPipeline(pipeline);
|
||||
pipeline.metadataStream.on('data', pipeline.trigger.bind(pipeline, 'id3Frame'));
|
||||
return pipeline;
|
||||
};
|
||||
|
||||
var setupPipelineListeners = function setupPipelineListeners(pipeline, transmuxer) {
|
||||
pipeline.on('data', transmuxer.trigger.bind(transmuxer, 'data'));
|
||||
pipeline.on('done', transmuxer.trigger.bind(transmuxer, 'done'));
|
||||
pipeline.on('partialdone', transmuxer.trigger.bind(transmuxer, 'partialdone'));
|
||||
pipeline.on('endedtimeline', transmuxer.trigger.bind(transmuxer, 'endedtimeline'));
|
||||
pipeline.on('audioTimingInfo', transmuxer.trigger.bind(transmuxer, 'audioTimingInfo'));
|
||||
pipeline.on('videoTimingInfo', transmuxer.trigger.bind(transmuxer, 'videoTimingInfo'));
|
||||
pipeline.on('trackinfo', transmuxer.trigger.bind(transmuxer, 'trackinfo'));
|
||||
pipeline.on('id3Frame', function (event) {
|
||||
// add this to every single emitted segment even though it's only needed for the first
|
||||
event.dispatchType = pipeline.metadataStream.dispatchType; // keep original time, can be adjusted if needed at a higher level
|
||||
|
||||
event.cueTime = clock.videoTsToSeconds(event.pts);
|
||||
transmuxer.trigger('id3Frame', event);
|
||||
});
|
||||
pipeline.on('caption', function (event) {
|
||||
transmuxer.trigger('caption', event);
|
||||
});
|
||||
};
|
||||
|
||||
var Transmuxer = function Transmuxer(options) {
|
||||
var pipeline = null,
|
||||
hasFlushed = true;
|
||||
options = options || {};
|
||||
Transmuxer.prototype.init.call(this);
|
||||
options.baseMediaDecodeTime = options.baseMediaDecodeTime || 0;
|
||||
|
||||
this.push = function (bytes) {
|
||||
if (hasFlushed) {
|
||||
var isAac = isLikelyAacData(bytes);
|
||||
|
||||
if (isAac && (!pipeline || pipeline.type !== 'aac')) {
|
||||
pipeline = aacPipeline(options);
|
||||
setupPipelineListeners(pipeline, this);
|
||||
} else if (!isAac && (!pipeline || pipeline.type !== 'ts')) {
|
||||
pipeline = tsPipeline(options);
|
||||
setupPipelineListeners(pipeline, this);
|
||||
}
|
||||
|
||||
hasFlushed = false;
|
||||
}
|
||||
|
||||
pipeline.headOfPipeline.push(bytes);
|
||||
};
|
||||
|
||||
this.flush = function () {
|
||||
if (!pipeline) {
|
||||
return;
|
||||
}
|
||||
|
||||
hasFlushed = true;
|
||||
pipeline.headOfPipeline.flush();
|
||||
};
|
||||
|
||||
this.partialFlush = function () {
|
||||
if (!pipeline) {
|
||||
return;
|
||||
}
|
||||
|
||||
pipeline.headOfPipeline.partialFlush();
|
||||
};
|
||||
|
||||
this.endTimeline = function () {
|
||||
if (!pipeline) {
|
||||
return;
|
||||
}
|
||||
|
||||
pipeline.headOfPipeline.endTimeline();
|
||||
};
|
||||
|
||||
this.reset = function () {
|
||||
if (!pipeline) {
|
||||
return;
|
||||
}
|
||||
|
||||
pipeline.headOfPipeline.reset();
|
||||
};
|
||||
|
||||
this.setBaseMediaDecodeTime = function (baseMediaDecodeTime) {
|
||||
if (!options.keepOriginalTimestamps) {
|
||||
options.baseMediaDecodeTime = baseMediaDecodeTime;
|
||||
}
|
||||
|
||||
if (!pipeline) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (pipeline.tracks.audio) {
|
||||
pipeline.tracks.audio.timelineStartInfo.dts = undefined;
|
||||
pipeline.tracks.audio.timelineStartInfo.pts = undefined;
|
||||
trackInfo.clearDtsInfo(pipeline.tracks.audio);
|
||||
|
||||
if (pipeline.audioRollover) {
|
||||
pipeline.audioRollover.discontinuity();
|
||||
}
|
||||
}
|
||||
|
||||
if (pipeline.tracks.video) {
|
||||
if (pipeline.videoSegmentStream) {
|
||||
pipeline.videoSegmentStream.gopCache_ = [];
|
||||
}
|
||||
|
||||
pipeline.tracks.video.timelineStartInfo.dts = undefined;
|
||||
pipeline.tracks.video.timelineStartInfo.pts = undefined;
|
||||
trackInfo.clearDtsInfo(pipeline.tracks.video); // pipeline.captionStream.reset();
|
||||
}
|
||||
|
||||
if (pipeline.timestampRollover) {
|
||||
pipeline.timestampRollover.discontinuity();
|
||||
}
|
||||
};
|
||||
|
||||
this.setRemux = function (val) {
|
||||
options.remux = val;
|
||||
|
||||
if (pipeline && pipeline.coalesceStream) {
|
||||
pipeline.coalesceStream.setRemux(val);
|
||||
}
|
||||
};
|
||||
|
||||
this.setAudioAppendStart = function (audioAppendStart) {
|
||||
if (!pipeline || !pipeline.tracks.audio || !pipeline.audioSegmentStream) {
|
||||
return;
|
||||
}
|
||||
|
||||
pipeline.audioSegmentStream.setAudioAppendStart(audioAppendStart);
|
||||
}; // TODO GOP alignment support
|
||||
// Support may be a bit trickier than with full segment appends, as GOPs may be split
|
||||
// and processed in a more granular fashion
|
||||
|
||||
|
||||
this.alignGopsWith = function (gopsToAlignWith) {
|
||||
return;
|
||||
};
|
||||
};
|
||||
|
||||
Transmuxer.prototype = new Stream();
|
||||
module.exports = Transmuxer;
|
||||
Loading…
Add table
Add a link
Reference in a new issue