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mux.js - npm Package Compare versions

Comparing version 6.2.0 to 6.3.0

cjs/mp4/emsg.js
cjs/tools/parse-id3.js
cjs/utils/string.js
es/mp4/emsg.js
es/tools/parse-id3.js
es/utils/string.js
lib/mp4/emsg.js
lib/tools/parse-id3.js
lib/utils/string.js
test/mp4-emsg.test.js
test/utils.string.test.js

11

CHANGELOG.md

@@ -0,1 +1,12 @@

<a name="6.3.0"></a>
# [6.3.0](https://github.com/videojs/mux.js/compare/v6.2.0...v6.3.0) (2023-02-22)
### Features
* support emsg box parsing ([2e77285](https://github.com/videojs/mux.js/commit/2e77285))
### Bug Fixes
* emsg ie11 test failures ([528e9ed](https://github.com/videojs/mux.js/commit/528e9ed))
<a name="6.2.0"></a>

@@ -2,0 +13,0 @@ # [6.2.0](https://github.com/videojs/mux.js/compare/v6.1.0...v6.2.0) (2022-07-08)

175

cjs/m2ts/metadata-stream.js

@@ -15,160 +15,3 @@ /**

StreamTypes = require('./stream-types'),
typedArrayIndexOf = require('../utils/typed-array').typedArrayIndexOf,
// Frames that allow different types of text encoding contain a text
// encoding description byte [ID3v2.4.0 section 4.]
textEncodingDescriptionByte = {
Iso88591: 0x00,
// ISO-8859-1, terminated with \0.
Utf16: 0x01,
// UTF-16 encoded Unicode BOM, terminated with \0\0
Utf16be: 0x02,
// UTF-16BE encoded Unicode, without BOM, terminated with \0\0
Utf8: 0x03 // UTF-8 encoded Unicode, terminated with \0
},
// return a percent-encoded representation of the specified byte range
// @see http://en.wikipedia.org/wiki/Percent-encoding
percentEncode = function percentEncode(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 parseUtf8(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 parseIso88591(bytes, start, end) {
return unescape(percentEncode(bytes, start, end)); // jshint ignore:line
},
parseSyncSafeInteger = function parseSyncSafeInteger(data) {
return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];
},
frameParsers = {
'APIC': function APIC(frame) {
var i = 1,
mimeTypeEndIndex,
descriptionEndIndex,
LINK_MIME_TYPE = '-->';
if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
// ignore frames with unrecognized character encodings
return;
} // parsing fields [ID3v2.4.0 section 4.14.]
mimeTypeEndIndex = typedArrayIndexOf(frame.data, 0, i);
if (mimeTypeEndIndex < 0) {
// malformed frame
return;
} // parsing Mime type field (terminated with \0)
frame.mimeType = parseIso88591(frame.data, i, mimeTypeEndIndex);
i = mimeTypeEndIndex + 1; // parsing 1-byte Picture Type field
frame.pictureType = frame.data[i];
i++;
descriptionEndIndex = typedArrayIndexOf(frame.data, 0, i);
if (descriptionEndIndex < 0) {
// malformed frame
return;
} // parsing Description field (terminated with \0)
frame.description = parseUtf8(frame.data, i, descriptionEndIndex);
i = descriptionEndIndex + 1;
if (frame.mimeType === LINK_MIME_TYPE) {
// parsing Picture Data field as URL (always represented as ISO-8859-1 [ID3v2.4.0 section 4.])
frame.url = parseIso88591(frame.data, i, frame.data.length);
} else {
// parsing Picture Data field as binary data
frame.pictureData = frame.data.subarray(i, frame.data.length);
}
},
'T*': function T(frame) {
if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
// ignore frames with unrecognized character encodings
return;
} // parse text field, do not include null terminator in the frame value
// frames that allow different types of encoding contain terminated text [ID3v2.4.0 section 4.]
frame.value = parseUtf8(frame.data, 1, frame.data.length).replace(/\0*$/, ''); // text information frames supports multiple strings, stored as a terminator separated list [ID3v2.4.0 section 4.2.]
frame.values = frame.value.split('\0');
},
'TXXX': function TXXX(frame) {
var descriptionEndIndex;
if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
// ignore frames with unrecognized character encodings
return;
}
descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);
if (descriptionEndIndex === -1) {
return;
} // parse the text fields
frame.description = parseUtf8(frame.data, 1, descriptionEndIndex); // do not include the null terminator in the tag value
// frames that allow different types of encoding contain terminated text
// [ID3v2.4.0 section 4.]
frame.value = parseUtf8(frame.data, descriptionEndIndex + 1, frame.data.length).replace(/\0*$/, '');
frame.data = frame.value;
},
'W*': function W(frame) {
// parse URL field; URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]
// if the value is followed by a string termination all the following information should be ignored [ID3v2.4.0 section 4.3]
frame.url = parseIso88591(frame.data, 0, frame.data.length).replace(/\0.*$/, '');
},
'WXXX': function WXXX(frame) {
var descriptionEndIndex;
if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
// ignore frames with unrecognized character encodings
return;
}
descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);
if (descriptionEndIndex === -1) {
return;
} // parse the description and URL fields
frame.description = parseUtf8(frame.data, 1, descriptionEndIndex); // URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]
// if the value is followed by a string termination all the following information
// should be ignored [ID3v2.4.0 section 4.3]
frame.url = parseIso88591(frame.data, descriptionEndIndex + 1, frame.data.length).replace(/\0.*$/, '');
},
'PRIV': function PRIV(frame) {
var i;
for (i = 0; i < frame.data.length; i++) {
if (frame.data[i] === 0) {
// parse the description and URL fields
frame.owner = parseIso88591(frame.data, 0, i);
break;
}
}
frame.privateData = frame.data.subarray(i + 1);
frame.data = frame.privateData;
}
},
id3 = require('../tools/parse-id3'),
_MetadataStream;

@@ -236,3 +79,3 @@

// 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
tagSize = id3.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

@@ -270,5 +113,5 @@

frameStart += parseSyncSafeInteger(tag.data.subarray(10, 14)); // clip any padding off the end
frameStart += id3.parseSyncSafeInteger(tag.data.subarray(10, 14)); // clip any padding off the end
tagSize -= parseSyncSafeInteger(tag.data.subarray(16, 20));
tagSize -= id3.parseSyncSafeInteger(tag.data.subarray(16, 20));
} // parse one or more ID3 frames

@@ -280,3 +123,3 @@ // http://id3.org/id3v2.3.0#ID3v2_frame_overview

// determine the number of bytes in this frame
frameSize = parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8));
frameSize = id3.parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8));

@@ -300,11 +143,11 @@ if (frameSize < 1) {

if (frameParsers[frame.id]) {
if (id3.frameParsers[frame.id]) {
// use frame specific parser
frameParsers[frame.id](frame);
id3.frameParsers[frame.id](frame);
} else if (frame.id[0] === 'T') {
// use text frame generic parser
frameParsers['T*'](frame);
id3.frameParsers['T*'](frame);
} else if (frame.id[0] === 'W') {
// use URL link frame generic parser
frameParsers['W*'](frame);
id3.frameParsers['W*'](frame);
} // handle the special PRIV frame used to indicate the start

@@ -311,0 +154,0 @@ // time for raw AAC data

37

cjs/mp4/probe.js

@@ -19,2 +19,4 @@ /**

var emsg = require('../mp4/emsg.js');
var parseTfhd = require('../tools/parse-tfhd.js');

@@ -28,5 +30,7 @@

var timescale, startTime, compositionStartTime, getVideoTrackIds, getTracks, getTimescaleFromMediaHeader;
var timescale, startTime, compositionStartTime, getVideoTrackIds, getTracks, getTimescaleFromMediaHeader, getEmsgID3;
var window = require('global/window');
var parseId3Frames = require('../tools/parse-id3.js').parseId3Frames;
/**

@@ -351,3 +355,31 @@ * Parses an MP4 initialization segment and extracts the timescale

};
/**
* Returns an array of emsg ID3 data from the provided segmentData.
* An offset can also be provided as the Latest Arrival Time to calculate
* the Event Start Time of v0 EMSG boxes.
* See: https://dashif-documents.azurewebsites.net/Events/master/event.html#Inband-event-timing
*
* @param {Uint8Array} segmentData the segment byte array.
* @param {number} offset the segment start time or Latest Arrival Time,
* @return {Object[]} an array of ID3 parsed from EMSG boxes
*/
getEmsgID3 = function getEmsgID3(segmentData, offset) {
if (offset === void 0) {
offset = 0;
}
var emsgBoxes = findBox(segmentData, ['emsg']);
return emsgBoxes.map(function (data) {
var parsedBox = emsg.parseEmsgBox(new Uint8Array(data));
var parsedId3Frames = parseId3Frames(parsedBox.message_data);
return {
cueTime: emsg.scaleTime(parsedBox.presentation_time, parsedBox.timescale, parsedBox.presentation_time_delta, offset),
duration: emsg.scaleTime(parsedBox.event_duration, parsedBox.timescale),
frames: parsedId3Frames
};
});
};
module.exports = {

@@ -362,3 +394,4 @@ // export mp4 inspector's findBox and parseType for backwards compatibility

tracks: getTracks,
getTimescaleFromMediaHeader: getTimescaleFromMediaHeader
getTimescaleFromMediaHeader: getTimescaleFromMediaHeader,
getEmsgID3: getEmsgID3
};

4

dist/mux-flv.min.js

@@ -1,2 +0,2 @@

/*! @name mux.js @version 6.2.0 @license Apache-2.0 */
!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):(t="undefined"!=typeof globalThis?globalThis:t||self).muxjs=e()}(this,(function(){"use strict";var t;(t=function(e,i){var s,a=0,n=16384,r=function(t,e){var i,s=t.position+e;s<t.bytes.byteLength||((i=new Uint8Array(2*s)).set(t.bytes.subarray(0,t.position),0),t.bytes=i,t.view=new DataView(t.bytes.buffer))},o=t.widthBytes||new Uint8Array("width".length),h=t.heightBytes||new Uint8Array("height".length),p=t.videocodecidBytes||new Uint8Array("videocodecid".length);if(!t.widthBytes){for(s=0;s<"width".length;s++)o[s]="width".charCodeAt(s);for(s=0;s<"height".length;s++)h[s]="height".charCodeAt(s);for(s=0;s<"videocodecid".length;s++)p[s]="videocodecid".charCodeAt(s);t.widthBytes=o,t.heightBytes=h,t.videocodecidBytes=p}switch(this.keyFrame=!1,e){case t.VIDEO_TAG:this.length=16,n*=6;break;case t.AUDIO_TAG:this.length=13,this.keyFrame=!0;break;case t.METADATA_TAG:this.length=29,this.keyFrame=!0;break;default:throw new Error("Unknown FLV tag type")}this.bytes=new Uint8Array(n),this.view=new DataView(this.bytes.buffer),this.bytes[0]=e,this.position=this.length,this.keyFrame=i,this.pts=0,this.dts=0,this.writeBytes=function(t,e,i){var s,a=e||0;s=a+(i=i||t.byteLength),r(this,i),this.bytes.set(t.subarray(a,s),this.position),this.position+=i,this.length=Math.max(this.length,this.position)},this.writeByte=function(t){r(this,1),this.bytes[this.position]=t,this.position++,this.length=Math.max(this.length,this.position)},this.writeShort=function(t){r(this,2),this.view.setUint16(this.position,t),this.position+=2,this.length=Math.max(this.length,this.position)},this.negIndex=function(t){return this.bytes[this.length-t]},this.nalUnitSize=function(){return 0===a?0:this.length-(a+4)},this.startNalUnit=function(){if(a>0)throw new Error("Attempted to create new NAL wihout closing the old one");a=this.length,this.length+=4,this.position=this.length},this.endNalUnit=function(t){var e,i;this.length===a+4?this.length-=4:a>0&&(e=a+4,i=this.length-e,this.position=a,this.view.setUint32(this.position,i),this.position=this.length,t&&t.push(this.bytes.subarray(e,e+i))),a=0},this.writeMetaDataDouble=function(t,e){var i;if(r(this,2+t.length+9),this.view.setUint16(this.position,t.length),this.position+=2,"width"===t)this.bytes.set(o,this.position),this.position+=5;else if("height"===t)this.bytes.set(h,this.position),this.position+=6;else if("videocodecid"===t)this.bytes.set(p,this.position),this.position+=12;else for(i=0;i<t.length;i++)this.bytes[this.position]=t.charCodeAt(i),this.position++;this.position++,this.view.setFloat64(this.position,e),this.position+=8,this.length=Math.max(this.length,this.position),++a},this.writeMetaDataBoolean=function(t,e){var i;for(r(this,2),this.view.setUint16(this.position,t.length),this.position+=2,i=0;i<t.length;i++)r(this,1),this.bytes[this.position]=t.charCodeAt(i),this.position++;r(this,2),this.view.setUint8(this.position,1),this.position++,this.view.setUint8(this.position,e?1:0),this.position++,this.length=Math.max(this.length,this.position),++a},this.finalize=function(){var e,s;switch(this.bytes[0]){case t.VIDEO_TAG:this.bytes[11]=7|(this.keyFrame||i?16:32),this.bytes[12]=i?0:1,e=this.pts-this.dts,this.bytes[13]=(16711680&e)>>>16,this.bytes[14]=(65280&e)>>>8,this.bytes[15]=(255&e)>>>0;break;case t.AUDIO_TAG:this.bytes[11]=175,this.bytes[12]=i?0:1;break;case t.METADATA_TAG:this.position=11,this.view.setUint8(this.position,2),this.position++,this.view.setUint16(this.position,10),this.position+=2,this.bytes.set([111,110,77,101,116,97,68,97,116,97],this.position),this.position+=10,this.bytes[this.position]=8,this.position++,this.view.setUint32(this.position,a),this.position=this.length,this.bytes.set([0,0,9],this.position),this.position+=3,this.length=this.position}return s=this.length-11,this.bytes[1]=(16711680&s)>>>16,this.bytes[2]=(65280&s)>>>8,this.bytes[3]=(255&s)>>>0,this.bytes[4]=(16711680&this.dts)>>>16,this.bytes[5]=(65280&this.dts)>>>8,this.bytes[6]=(255&this.dts)>>>0,this.bytes[7]=(4278190080&this.dts)>>>24,this.bytes[8]=0,this.bytes[9]=0,this.bytes[10]=0,r(this,4),this.view.setUint32(this.length,this.length),this.length+=4,this.position+=4,this.bytes=this.bytes.subarray(0,this.length),this.frameTime=t.frameTime(this.bytes),this}}).AUDIO_TAG=8,t.VIDEO_TAG=9,t.METADATA_TAG=18,t.isAudioFrame=function(e){return t.AUDIO_TAG===e[0]},t.isVideoFrame=function(e){return t.VIDEO_TAG===e[0]},t.isMetaData=function(e){return t.METADATA_TAG===e[0]},t.isKeyFrame=function(e){return t.isVideoFrame(e)?23===e[11]:!!t.isAudioFrame(e)||!!t.isMetaData(e)},t.frameTime=function(t){var e=t[4]<<16;return e|=t[5]<<8,e|=t[6]<<0,e|=t[7]<<24};var e=t,i=function(){this.init=function(){var t={};this.on=function(e,i){t[e]||(t[e]=[]),t[e]=t[e].concat(i)},this.off=function(e,i){var s;return!!t[e]&&(s=t[e].indexOf(i),t[e]=t[e].slice(),t[e].splice(s,1),s>-1)},this.trigger=function(e){var i,s,a,n;if(i=t[e])if(2===arguments.length)for(a=i.length,s=0;s<a;++s)i[s].call(this,arguments[1]);else{for(n=[],s=arguments.length,s=1;s<arguments.length;++s)n.push(arguments[s]);for(a=i.length,s=0;s<a;++s)i[s].apply(this,n)}},this.dispose=function(){t={}}}};i.prototype.pipe=function(t){return this.on("data",(function(e){t.push(e)})),this.on("done",(function(e){t.flush(e)})),this.on("partialdone",(function(e){t.partialFlush(e)})),this.on("endedtimeline",(function(e){t.endTimeline(e)})),this.on("reset",(function(e){t.reset(e)})),t},i.prototype.push=function(t){this.trigger("data",t)},i.prototype.flush=function(t){this.trigger("done",t)},i.prototype.partialFlush=function(t){this.trigger("partialdone",t)},i.prototype.endTimeline=function(t){this.trigger("endedtimeline",t)},i.prototype.reset=function(t){this.trigger("reset",t)};var s=i,a=function(t){for(var e=0,i={payloadType:-1,payloadSize:0},s=0,a=0;e<t.byteLength&&128!==t[e];){for(;255===t[e];)s+=255,e++;for(s+=t[e++];255===t[e];)a+=255,e++;if(a+=t[e++],!i.payload&&4===s){if("GA94"===String.fromCharCode(t[e+3],t[e+4],t[e+5],t[e+6])){i.payloadType=s,i.payloadSize=a,i.payload=t.subarray(e,e+a);break}i.payload=void 0}e+=a,s=0,a=0}return i},n=function(t){return 181!==t.payload[0]||49!=(t.payload[1]<<8|t.payload[2])||"GA94"!==String.fromCharCode(t.payload[3],t.payload[4],t.payload[5],t.payload[6])||3!==t.payload[7]?null:t.payload.subarray(8,t.payload.length-1)},r=function(t,e){var i,s,a,n,r=[];if(!(64&e[0]))return r;for(s=31&e[0],i=0;i<s;i++)n={type:3&e[(a=3*i)+2],pts:t},4&e[a+2]&&(n.ccData=e[a+3]<<8|e[a+4],r.push(n));return r},o=4,h=function t(e){e=e||{},t.prototype.init.call(this),this.parse708captions_="boolean"!=typeof e.parse708captions||e.parse708captions,this.captionPackets_=[],this.ccStreams_=[new _(0,0),new _(0,1),new _(1,0),new _(1,1)],this.parse708captions_&&(this.cc708Stream_=new u({captionServices:e.captionServices})),this.reset(),this.ccStreams_.forEach((function(t){t.on("data",this.trigger.bind(this,"data")),t.on("partialdone",this.trigger.bind(this,"partialdone")),t.on("done",this.trigger.bind(this,"done"))}),this),this.parse708captions_&&(this.cc708Stream_.on("data",this.trigger.bind(this,"data")),this.cc708Stream_.on("partialdone",this.trigger.bind(this,"partialdone")),this.cc708Stream_.on("done",this.trigger.bind(this,"done")))};(h.prototype=new s).push=function(t){var e,i,s;if("sei_rbsp"===t.nalUnitType&&(e=a(t.escapedRBSP)).payload&&e.payloadType===o&&(i=n(e)))if(t.dts<this.latestDts_)this.ignoreNextEqualDts_=!0;else{if(t.dts===this.latestDts_&&this.ignoreNextEqualDts_)return this.numSameDts_--,void(this.numSameDts_||(this.ignoreNextEqualDts_=!1));s=r(t.pts,i),this.captionPackets_=this.captionPackets_.concat(s),this.latestDts_!==t.dts&&(this.numSameDts_=0),this.numSameDts_++,this.latestDts_=t.dts}},h.prototype.flushCCStreams=function(t){this.ccStreams_.forEach((function(e){return"flush"===t?e.flush():e.partialFlush()}),this)},h.prototype.flushStream=function(t){this.captionPackets_.length?(this.captionPackets_.forEach((function(t,e){t.presortIndex=e})),this.captionPackets_.sort((function(t,e){return t.pts===e.pts?t.presortIndex-e.presortIndex:t.pts-e.pts})),this.captionPackets_.forEach((function(t){t.type<2?this.dispatchCea608Packet(t):this.dispatchCea708Packet(t)}),this),this.captionPackets_.length=0,this.flushCCStreams(t)):this.flushCCStreams(t)},h.prototype.flush=function(){return this.flushStream("flush")},h.prototype.partialFlush=function(){return this.flushStream("partialFlush")},h.prototype.reset=function(){this.latestDts_=null,this.ignoreNextEqualDts_=!1,this.numSameDts_=0,this.activeCea608Channel_=[null,null],this.ccStreams_.forEach((function(t){t.reset()}))},h.prototype.dispatchCea608Packet=function(t){this.setsTextOrXDSActive(t)?this.activeCea608Channel_[t.type]=null:this.setsChannel1Active(t)?this.activeCea608Channel_[t.type]=0:this.setsChannel2Active(t)&&(this.activeCea608Channel_[t.type]=1),null!==this.activeCea608Channel_[t.type]&&this.ccStreams_[(t.type<<1)+this.activeCea608Channel_[t.type]].push(t)},h.prototype.setsChannel1Active=function(t){return 4096==(30720&t.ccData)},h.prototype.setsChannel2Active=function(t){return 6144==(30720&t.ccData)},h.prototype.setsTextOrXDSActive=function(t){return 256==(28928&t.ccData)||4138==(30974&t.ccData)||6186==(30974&t.ccData)},h.prototype.dispatchCea708Packet=function(t){this.parse708captions_&&this.cc708Stream_.push(t)};var p={127:9834,4128:32,4129:160,4133:8230,4138:352,4140:338,4144:9608,4145:8216,4146:8217,4147:8220,4148:8221,4149:8226,4153:8482,4154:353,4156:339,4157:8480,4159:376,4214:8539,4215:8540,4216:8541,4217:8542,4218:9168,4219:9124,4220:9123,4221:9135,4222:9126,4223:9121,4256:12600},d=function(t){return 32<=t&&t<=127||160<=t&&t<=255},l=function(t){this.windowNum=t,this.reset()};l.prototype.reset=function(){this.clearText(),this.pendingNewLine=!1,this.winAttr={},this.penAttr={},this.penLoc={},this.penColor={},this.visible=0,this.rowLock=0,this.columnLock=0,this.priority=0,this.relativePositioning=0,this.anchorVertical=0,this.anchorHorizontal=0,this.anchorPoint=0,this.rowCount=1,this.virtualRowCount=this.rowCount+1,this.columnCount=41,this.windowStyle=0,this.penStyle=0},l.prototype.getText=function(){return this.rows.join("\n")},l.prototype.clearText=function(){this.rows=[""],this.rowIdx=0},l.prototype.newLine=function(t){for(this.rows.length>=this.virtualRowCount&&"function"==typeof this.beforeRowOverflow&&this.beforeRowOverflow(t),this.rows.length>0&&(this.rows.push(""),this.rowIdx++);this.rows.length>this.virtualRowCount;)this.rows.shift(),this.rowIdx--},l.prototype.isEmpty=function(){return 0===this.rows.length||1===this.rows.length&&""===this.rows[0]},l.prototype.addText=function(t){this.rows[this.rowIdx]+=t},l.prototype.backspace=function(){if(!this.isEmpty()){var t=this.rows[this.rowIdx];this.rows[this.rowIdx]=t.substr(0,t.length-1)}};var c=function(t,e,i){this.serviceNum=t,this.text="",this.currentWindow=new l(-1),this.windows=[],this.stream=i,"string"==typeof e&&this.createTextDecoder(e)};c.prototype.init=function(t,e){this.startPts=t;for(var i=0;i<8;i++)this.windows[i]=new l(i),"function"==typeof e&&(this.windows[i].beforeRowOverflow=e)},c.prototype.setCurrentWindow=function(t){this.currentWindow=this.windows[t]},c.prototype.createTextDecoder=function(t){if("undefined"==typeof TextDecoder)this.stream.trigger("log",{level:"warn",message:"The `encoding` option is unsupported without TextDecoder support"});else try{this.textDecoder_=new TextDecoder(t)}catch(e){this.stream.trigger("log",{level:"warn",message:"TextDecoder could not be created with "+t+" encoding. "+e})}};var u=function t(e){e=e||{},t.prototype.init.call(this);var i,s=this,a=e.captionServices||{},n={};Object.keys(a).forEach((function(t){i=a[t],/^SERVICE/.test(t)&&(n[t]=i.encoding)})),this.serviceEncodings=n,this.current708Packet=null,this.services={},this.push=function(t){3===t.type?(s.new708Packet(),s.add708Bytes(t)):(null===s.current708Packet&&s.new708Packet(),s.add708Bytes(t))}};u.prototype=new s,u.prototype.new708Packet=function(){null!==this.current708Packet&&this.push708Packet(),this.current708Packet={data:[],ptsVals:[]}},u.prototype.add708Bytes=function(t){var e=t.ccData,i=e>>>8,s=255&e;this.current708Packet.ptsVals.push(t.pts),this.current708Packet.data.push(i),this.current708Packet.data.push(s)},u.prototype.push708Packet=function(){var t=this.current708Packet,e=t.data,i=null,s=null,a=0,n=e[a++];for(t.seq=n>>6,t.sizeCode=63&n;a<e.length;a++)s=31&(n=e[a++]),7===(i=n>>5)&&s>0&&(i=n=e[a++]),this.pushServiceBlock(i,a,s),s>0&&(a+=s-1)},u.prototype.pushServiceBlock=function(t,e,i){var s,a=e,n=this.current708Packet.data,r=this.services[t];for(r||(r=this.initService(t,a));a<e+i&&a<n.length;a++)s=n[a],d(s)?a=this.handleText(a,r):24===s?a=this.multiByteCharacter(a,r):16===s?a=this.extendedCommands(a,r):128<=s&&s<=135?a=this.setCurrentWindow(a,r):152<=s&&s<=159?a=this.defineWindow(a,r):136===s?a=this.clearWindows(a,r):140===s?a=this.deleteWindows(a,r):137===s?a=this.displayWindows(a,r):138===s?a=this.hideWindows(a,r):139===s?a=this.toggleWindows(a,r):151===s?a=this.setWindowAttributes(a,r):144===s?a=this.setPenAttributes(a,r):145===s?a=this.setPenColor(a,r):146===s?a=this.setPenLocation(a,r):143===s?r=this.reset(a,r):8===s?r.currentWindow.backspace():12===s?r.currentWindow.clearText():13===s?r.currentWindow.pendingNewLine=!0:14===s?r.currentWindow.clearText():141===s&&a++},u.prototype.extendedCommands=function(t,e){var i=this.current708Packet.data[++t];return d(i)&&(t=this.handleText(t,e,{isExtended:!0})),t},u.prototype.getPts=function(t){return this.current708Packet.ptsVals[Math.floor(t/2)]},u.prototype.initService=function(t,e){var i,s,a=this;return(i="SERVICE"+t)in this.serviceEncodings&&(s=this.serviceEncodings[i]),this.services[t]=new c(t,s,a),this.services[t].init(this.getPts(e),(function(e){a.flushDisplayed(e,a.services[t])})),this.services[t]},u.prototype.handleText=function(t,e,i){var s,a,n,r,o=i&&i.isExtended,h=i&&i.isMultiByte,d=this.current708Packet.data,l=o?4096:0,c=d[t],u=d[t+1],f=e.currentWindow;return e.textDecoder_&&!o?(h?(a=[c,u],t++):a=[c],s=e.textDecoder_.decode(new Uint8Array(a))):(r=p[n=l|c]||n,s=4096&n&&n===r?"":String.fromCharCode(r)),f.pendingNewLine&&!f.isEmpty()&&f.newLine(this.getPts(t)),f.pendingNewLine=!1,f.addText(s),t},u.prototype.multiByteCharacter=function(t,e){var i=this.current708Packet.data,s=i[t+1],a=i[t+2];return d(s)&&d(a)&&(t=this.handleText(++t,e,{isMultiByte:!0})),t},u.prototype.setCurrentWindow=function(t,e){var i=7&this.current708Packet.data[t];return e.setCurrentWindow(i),t},u.prototype.defineWindow=function(t,e){var i=this.current708Packet.data,s=i[t],a=7&s;e.setCurrentWindow(a);var n=e.currentWindow;return s=i[++t],n.visible=(32&s)>>5,n.rowLock=(16&s)>>4,n.columnLock=(8&s)>>3,n.priority=7&s,s=i[++t],n.relativePositioning=(128&s)>>7,n.anchorVertical=127&s,s=i[++t],n.anchorHorizontal=s,s=i[++t],n.anchorPoint=(240&s)>>4,n.rowCount=15&s,s=i[++t],n.columnCount=63&s,s=i[++t],n.windowStyle=(56&s)>>3,n.penStyle=7&s,n.virtualRowCount=n.rowCount+1,t},u.prototype.setWindowAttributes=function(t,e){var i=this.current708Packet.data,s=i[t],a=e.currentWindow.winAttr;return s=i[++t],a.fillOpacity=(192&s)>>6,a.fillRed=(48&s)>>4,a.fillGreen=(12&s)>>2,a.fillBlue=3&s,s=i[++t],a.borderType=(192&s)>>6,a.borderRed=(48&s)>>4,a.borderGreen=(12&s)>>2,a.borderBlue=3&s,s=i[++t],a.borderType+=(128&s)>>5,a.wordWrap=(64&s)>>6,a.printDirection=(48&s)>>4,a.scrollDirection=(12&s)>>2,a.justify=3&s,s=i[++t],a.effectSpeed=(240&s)>>4,a.effectDirection=(12&s)>>2,a.displayEffect=3&s,t},u.prototype.flushDisplayed=function(t,e){for(var i=[],s=0;s<8;s++)e.windows[s].visible&&!e.windows[s].isEmpty()&&i.push(e.windows[s].getText());e.endPts=t,e.text=i.join("\n\n"),this.pushCaption(e),e.startPts=t},u.prototype.pushCaption=function(t){""!==t.text&&(this.trigger("data",{startPts:t.startPts,endPts:t.endPts,text:t.text,stream:"cc708_"+t.serviceNum}),t.text="",t.startPts=t.endPts)},u.prototype.displayWindows=function(t,e){var i=this.current708Packet.data[++t],s=this.getPts(t);this.flushDisplayed(s,e);for(var a=0;a<8;a++)i&1<<a&&(e.windows[a].visible=1);return t},u.prototype.hideWindows=function(t,e){var i=this.current708Packet.data[++t],s=this.getPts(t);this.flushDisplayed(s,e);for(var a=0;a<8;a++)i&1<<a&&(e.windows[a].visible=0);return t},u.prototype.toggleWindows=function(t,e){var i=this.current708Packet.data[++t],s=this.getPts(t);this.flushDisplayed(s,e);for(var a=0;a<8;a++)i&1<<a&&(e.windows[a].visible^=1);return t},u.prototype.clearWindows=function(t,e){var i=this.current708Packet.data[++t],s=this.getPts(t);this.flushDisplayed(s,e);for(var a=0;a<8;a++)i&1<<a&&e.windows[a].clearText();return t},u.prototype.deleteWindows=function(t,e){var i=this.current708Packet.data[++t],s=this.getPts(t);this.flushDisplayed(s,e);for(var a=0;a<8;a++)i&1<<a&&e.windows[a].reset();return t},u.prototype.setPenAttributes=function(t,e){var i=this.current708Packet.data,s=i[t],a=e.currentWindow.penAttr;return s=i[++t],a.textTag=(240&s)>>4,a.offset=(12&s)>>2,a.penSize=3&s,s=i[++t],a.italics=(128&s)>>7,a.underline=(64&s)>>6,a.edgeType=(56&s)>>3,a.fontStyle=7&s,t},u.prototype.setPenColor=function(t,e){var i=this.current708Packet.data,s=i[t],a=e.currentWindow.penColor;return s=i[++t],a.fgOpacity=(192&s)>>6,a.fgRed=(48&s)>>4,a.fgGreen=(12&s)>>2,a.fgBlue=3&s,s=i[++t],a.bgOpacity=(192&s)>>6,a.bgRed=(48&s)>>4,a.bgGreen=(12&s)>>2,a.bgBlue=3&s,s=i[++t],a.edgeRed=(48&s)>>4,a.edgeGreen=(12&s)>>2,a.edgeBlue=3&s,t},u.prototype.setPenLocation=function(t,e){var i=this.current708Packet.data,s=i[t],a=e.currentWindow.penLoc;return e.currentWindow.pendingNewLine=!0,s=i[++t],a.row=15&s,s=i[++t],a.column=63&s,t},u.prototype.reset=function(t,e){var i=this.getPts(t);return this.flushDisplayed(i,e),this.initService(e.serviceNum,t)};var f={42:225,92:233,94:237,95:243,96:250,123:231,124:247,125:209,126:241,127:9608,304:174,305:176,306:189,307:191,308:8482,309:162,310:163,311:9834,312:224,313:160,314:232,315:226,316:234,317:238,318:244,319:251,544:193,545:201,546:211,547:218,548:220,549:252,550:8216,551:161,552:42,553:39,554:8212,555:169,556:8480,557:8226,558:8220,559:8221,560:192,561:194,562:199,563:200,564:202,565:203,566:235,567:206,568:207,569:239,570:212,571:217,572:249,573:219,574:171,575:187,800:195,801:227,802:205,803:204,804:236,805:210,806:242,807:213,808:245,809:123,810:125,811:92,812:94,813:95,814:124,815:126,816:196,817:228,818:214,819:246,820:223,821:165,822:164,823:9474,824:197,825:229,826:216,827:248,828:9484,829:9488,830:9492,831:9496},g=function(t){return null===t?"":(t=f[t]||t,String.fromCharCode(t))},y=[4352,4384,4608,4640,5376,5408,5632,5664,5888,5920,4096,4864,4896,5120,5152],m=function(){for(var t=[],e=15;e--;)t.push("");return t},_=function t(e,i){t.prototype.init.call(this),this.field_=e||0,this.dataChannel_=i||0,this.name_="CC"+(1+(this.field_<<1|this.dataChannel_)),this.setConstants(),this.reset(),this.push=function(t){var e,i,s,a,n;if((e=32639&t.ccData)!==this.lastControlCode_){if(4096==(61440&e)?this.lastControlCode_=e:e!==this.PADDING_&&(this.lastControlCode_=null),s=e>>>8,a=255&e,e!==this.PADDING_)if(e===this.RESUME_CAPTION_LOADING_)this.mode_="popOn";else if(e===this.END_OF_CAPTION_)this.mode_="popOn",this.clearFormatting(t.pts),this.flushDisplayed(t.pts),i=this.displayed_,this.displayed_=this.nonDisplayed_,this.nonDisplayed_=i,this.startPts_=t.pts;else if(e===this.ROLL_UP_2_ROWS_)this.rollUpRows_=2,this.setRollUp(t.pts);else if(e===this.ROLL_UP_3_ROWS_)this.rollUpRows_=3,this.setRollUp(t.pts);else if(e===this.ROLL_UP_4_ROWS_)this.rollUpRows_=4,this.setRollUp(t.pts);else if(e===this.CARRIAGE_RETURN_)this.clearFormatting(t.pts),this.flushDisplayed(t.pts),this.shiftRowsUp_(),this.startPts_=t.pts;else if(e===this.BACKSPACE_)"popOn"===this.mode_?this.nonDisplayed_[this.row_]=this.nonDisplayed_[this.row_].slice(0,-1):this.displayed_[this.row_]=this.displayed_[this.row_].slice(0,-1);else if(e===this.ERASE_DISPLAYED_MEMORY_)this.flushDisplayed(t.pts),this.displayed_=m();else if(e===this.ERASE_NON_DISPLAYED_MEMORY_)this.nonDisplayed_=m();else if(e===this.RESUME_DIRECT_CAPTIONING_)"paintOn"!==this.mode_&&(this.flushDisplayed(t.pts),this.displayed_=m()),this.mode_="paintOn",this.startPts_=t.pts;else if(this.isSpecialCharacter(s,a))n=g((s=(3&s)<<8)|a),this[this.mode_](t.pts,n),this.column_++;else if(this.isExtCharacter(s,a))"popOn"===this.mode_?this.nonDisplayed_[this.row_]=this.nonDisplayed_[this.row_].slice(0,-1):this.displayed_[this.row_]=this.displayed_[this.row_].slice(0,-1),n=g((s=(3&s)<<8)|a),this[this.mode_](t.pts,n),this.column_++;else if(this.isMidRowCode(s,a))this.clearFormatting(t.pts),this[this.mode_](t.pts," "),this.column_++,14==(14&a)&&this.addFormatting(t.pts,["i"]),1==(1&a)&&this.addFormatting(t.pts,["u"]);else if(this.isOffsetControlCode(s,a))this.column_+=3&a;else if(this.isPAC(s,a)){var r=y.indexOf(7968&e);"rollUp"===this.mode_&&(r-this.rollUpRows_+1<0&&(r=this.rollUpRows_-1),this.setRollUp(t.pts,r)),r!==this.row_&&(this.clearFormatting(t.pts),this.row_=r),1&a&&-1===this.formatting_.indexOf("u")&&this.addFormatting(t.pts,["u"]),16==(16&e)&&(this.column_=4*((14&e)>>1)),this.isColorPAC(a)&&14==(14&a)&&this.addFormatting(t.pts,["i"])}else this.isNormalChar(s)&&(0===a&&(a=null),n=g(s),n+=g(a),this[this.mode_](t.pts,n),this.column_+=n.length)}else this.lastControlCode_=null}};_.prototype=new s,_.prototype.flushDisplayed=function(t){var e=this.displayed_.map((function(t,e){try{return t.trim()}catch(t){return this.trigger("log",{level:"warn",message:"Skipping a malformed 608 caption at index "+e+"."}),""}}),this).join("\n").replace(/^\n+|\n+$/g,"");e.length&&this.trigger("data",{startPts:this.startPts_,endPts:t,text:e,stream:this.name_})},_.prototype.reset=function(){this.mode_="popOn",this.topRow_=0,this.startPts_=0,this.displayed_=m(),this.nonDisplayed_=m(),this.lastControlCode_=null,this.column_=0,this.row_=14,this.rollUpRows_=2,this.formatting_=[]},_.prototype.setConstants=function(){0===this.dataChannel_?(this.BASE_=16,this.EXT_=17,this.CONTROL_=(20|this.field_)<<8,this.OFFSET_=23):1===this.dataChannel_&&(this.BASE_=24,this.EXT_=25,this.CONTROL_=(28|this.field_)<<8,this.OFFSET_=31),this.PADDING_=0,this.RESUME_CAPTION_LOADING_=32|this.CONTROL_,this.END_OF_CAPTION_=47|this.CONTROL_,this.ROLL_UP_2_ROWS_=37|this.CONTROL_,this.ROLL_UP_3_ROWS_=38|this.CONTROL_,this.ROLL_UP_4_ROWS_=39|this.CONTROL_,this.CARRIAGE_RETURN_=45|this.CONTROL_,this.RESUME_DIRECT_CAPTIONING_=41|this.CONTROL_,this.BACKSPACE_=33|this.CONTROL_,this.ERASE_DISPLAYED_MEMORY_=44|this.CONTROL_,this.ERASE_NON_DISPLAYED_MEMORY_=46|this.CONTROL_},_.prototype.isSpecialCharacter=function(t,e){return t===this.EXT_&&e>=48&&e<=63},_.prototype.isExtCharacter=function(t,e){return(t===this.EXT_+1||t===this.EXT_+2)&&e>=32&&e<=63},_.prototype.isMidRowCode=function(t,e){return t===this.EXT_&&e>=32&&e<=47},_.prototype.isOffsetControlCode=function(t,e){return t===this.OFFSET_&&e>=33&&e<=35},_.prototype.isPAC=function(t,e){return t>=this.BASE_&&t<this.BASE_+8&&e>=64&&e<=127},_.prototype.isColorPAC=function(t){return t>=64&&t<=79||t>=96&&t<=127},_.prototype.isNormalChar=function(t){return t>=32&&t<=127},_.prototype.setRollUp=function(t,e){if("rollUp"!==this.mode_&&(this.row_=14,this.mode_="rollUp",this.flushDisplayed(t),this.nonDisplayed_=m(),this.displayed_=m()),void 0!==e&&e!==this.row_)for(var i=0;i<this.rollUpRows_;i++)this.displayed_[e-i]=this.displayed_[this.row_-i],this.displayed_[this.row_-i]="";void 0===e&&(e=this.row_),this.topRow_=e-this.rollUpRows_+1},_.prototype.addFormatting=function(t,e){this.formatting_=this.formatting_.concat(e);var i=e.reduce((function(t,e){return t+"<"+e+">"}),"");this[this.mode_](t,i)},_.prototype.clearFormatting=function(t){if(this.formatting_.length){var e=this.formatting_.reverse().reduce((function(t,e){return t+"</"+e+">"}),"");this.formatting_=[],this[this.mode_](t,e)}},_.prototype.popOn=function(t,e){var i=this.nonDisplayed_[this.row_];i+=e,this.nonDisplayed_[this.row_]=i},_.prototype.rollUp=function(t,e){var i=this.displayed_[this.row_];i+=e,this.displayed_[this.row_]=i},_.prototype.shiftRowsUp_=function(){var t;for(t=0;t<this.topRow_;t++)this.displayed_[t]="";for(t=this.row_+1;t<15;t++)this.displayed_[t]="";for(t=this.topRow_;t<this.row_;t++)this.displayed_[t]=this.displayed_[t+1];this.displayed_[this.row_]=""},_.prototype.paintOn=function(t,e){var i=this.displayed_[this.row_];i+=e,this.displayed_[this.row_]=i};var w={CaptionStream:h,Cea608Stream:_,Cea708Stream:u},b={H264_STREAM_TYPE:27,ADTS_STREAM_TYPE:15,METADATA_STREAM_TYPE:21},v="shared",T=function(t,e){var i=1;for(t>e&&(i=-1);Math.abs(e-t)>4294967296;)t+=8589934592*i;return t},k=function t(e){var i,s;t.prototype.init.call(this),this.type_=e||v,this.push=function(t){this.type_!==v&&t.type!==this.type_||(void 0===s&&(s=t.dts),t.dts=T(t.dts,s),t.pts=T(t.pts,s),i=t.dts,this.trigger("data",t))},this.flush=function(){s=i,this.trigger("done")},this.endTimeline=function(){this.flush(),this.trigger("endedtimeline")},this.discontinuity=function(){s=void 0,i=void 0},this.reset=function(){this.discontinuity(),this.trigger("reset")}};k.prototype=new s;var S,A=k,C=function(t,e,i){if(!t)return-1;for(var s=i;s<t.length;s++)if(t[s]===e)return s;return-1},D=3,E=function(t,e,i){var s,a="";for(s=e;s<i;s++)a+="%"+("00"+t[s].toString(16)).slice(-2);return a},P=function(t,e,i){return decodeURIComponent(E(t,e,i))},U=function(t,e,i){return unescape(E(t,e,i))},R=function(t){return t[0]<<21|t[1]<<14|t[2]<<7|t[3]},M={APIC:function(t){var e,i,s=1;t.data[0]===D&&((e=C(t.data,0,s))<0||(t.mimeType=U(t.data,s,e),s=e+1,t.pictureType=t.data[s],s++,(i=C(t.data,0,s))<0||(t.description=P(t.data,s,i),s=i+1,"--\x3e"===t.mimeType?t.url=U(t.data,s,t.data.length):t.pictureData=t.data.subarray(s,t.data.length))))},"T*":function(t){t.data[0]===D&&(t.value=P(t.data,1,t.data.length).replace(/\0*$/,""),t.values=t.value.split("\0"))},TXXX:function(t){var e;t.data[0]===D&&-1!==(e=C(t.data,0,1))&&(t.description=P(t.data,1,e),t.value=P(t.data,e+1,t.data.length).replace(/\0*$/,""),t.data=t.value)},"W*":function(t){t.url=U(t.data,0,t.data.length).replace(/\0.*$/,"")},WXXX:function(t){var e;t.data[0]===D&&-1!==(e=C(t.data,0,1))&&(t.description=P(t.data,1,e),t.url=U(t.data,e+1,t.data.length).replace(/\0.*$/,""))},PRIV:function(t){var e;for(e=0;e<t.data.length;e++)if(0===t.data[e]){t.owner=U(t.data,0,e);break}t.privateData=t.data.subarray(e+1),t.data=t.privateData}};(S=function(t){var e,i={descriptor:t&&t.descriptor},s=0,a=[],n=0;if(S.prototype.init.call(this),this.dispatchType=b.METADATA_STREAM_TYPE.toString(16),i.descriptor)for(e=0;e<i.descriptor.length;e++)this.dispatchType+=("00"+i.descriptor[e].toString(16)).slice(-2);this.push=function(t){var e,i,r,o,h;if("timed-metadata"===t.type)if(t.dataAlignmentIndicator&&(n=0,a.length=0),0===a.length&&(t.data.length<10||t.data[0]!=="I".charCodeAt(0)||t.data[1]!=="D".charCodeAt(0)||t.data[2]!=="3".charCodeAt(0)))this.trigger("log",{level:"warn",message:"Skipping unrecognized metadata packet"});else if(a.push(t),n+=t.data.byteLength,1===a.length&&(s=R(t.data.subarray(6,10)),s+=10),!(n<s)){for(e={data:new Uint8Array(s),frames:[],pts:a[0].pts,dts:a[0].dts},h=0;h<s;)e.data.set(a[0].data.subarray(0,s-h),h),h+=a[0].data.byteLength,n-=a[0].data.byteLength,a.shift();i=10,64&e.data[5]&&(i+=4,i+=R(e.data.subarray(10,14)),s-=R(e.data.subarray(16,20)));do{if((r=R(e.data.subarray(i+4,i+8)))<1){this.trigger("log",{level:"warn",message:"Malformed ID3 frame encountered. Skipping remaining metadata parsing."});break}if((o={id:String.fromCharCode(e.data[i],e.data[i+1],e.data[i+2],e.data[i+3]),data:e.data.subarray(i+10,i+r+10)}).key=o.id,M[o.id]?M[o.id](o):"T"===o.id[0]?M["T*"](o):"W"===o.id[0]&&M["W*"](o),"com.apple.streaming.transportStreamTimestamp"===o.owner){var p=o.data,d=(1&p[3])<<30|p[4]<<22|p[5]<<14|p[6]<<6|p[7]>>>2;d*=4,d+=3&p[7],o.timeStamp=d,void 0===e.pts&&void 0===e.dts&&(e.pts=o.timeStamp,e.dts=o.timeStamp),this.trigger("timestamp",o)}e.frames.push(o),i+=10,i+=r}while(i<s);this.trigger("data",e)}}}).prototype=new s;var x,O,L,I=S,B=A,G=188;(x=function(){var t=new Uint8Array(G),e=0;x.prototype.init.call(this),this.push=function(i){var s,a=0,n=G;for(e?((s=new Uint8Array(i.byteLength+e)).set(t.subarray(0,e)),s.set(i,e),e=0):s=i;n<s.byteLength;)71!==s[a]||71!==s[n]?(a++,n++):(this.trigger("data",s.subarray(a,n)),a+=G,n+=G);a<s.byteLength&&(t.set(s.subarray(a),0),e=s.byteLength-a)},this.flush=function(){e===G&&71===t[0]&&(this.trigger("data",t),e=0),this.trigger("done")},this.endTimeline=function(){this.flush(),this.trigger("endedtimeline")},this.reset=function(){e=0,this.trigger("reset")}}).prototype=new s,(O=function(){var t,e,i,s;O.prototype.init.call(this),s=this,this.packetsWaitingForPmt=[],this.programMapTable=void 0,t=function(t,s){var a=0;s.payloadUnitStartIndicator&&(a+=t[a]+1),"pat"===s.type?e(t.subarray(a),s):i(t.subarray(a),s)},e=function(t,e){e.section_number=t[7],e.last_section_number=t[8],s.pmtPid=(31&t[10])<<8|t[11],e.pmtPid=s.pmtPid},i=function(t,e){var i,a;if(1&t[5]){for(s.programMapTable={video:null,audio:null,"timed-metadata":{}},i=3+((15&t[1])<<8|t[2])-4,a=12+((15&t[10])<<8|t[11]);a<i;){var n=t[a],r=(31&t[a+1])<<8|t[a+2];n===b.H264_STREAM_TYPE&&null===s.programMapTable.video?s.programMapTable.video=r:n===b.ADTS_STREAM_TYPE&&null===s.programMapTable.audio?s.programMapTable.audio=r:n===b.METADATA_STREAM_TYPE&&(s.programMapTable["timed-metadata"][r]=n),a+=5+((15&t[a+3])<<8|t[a+4])}e.programMapTable=s.programMapTable}},this.push=function(e){var i={},s=4;if(i.payloadUnitStartIndicator=!!(64&e[1]),i.pid=31&e[1],i.pid<<=8,i.pid|=e[2],(48&e[3])>>>4>1&&(s+=e[s]+1),0===i.pid)i.type="pat",t(e.subarray(s),i),this.trigger("data",i);else if(i.pid===this.pmtPid)for(i.type="pmt",t(e.subarray(s),i),this.trigger("data",i);this.packetsWaitingForPmt.length;)this.processPes_.apply(this,this.packetsWaitingForPmt.shift());else void 0===this.programMapTable?this.packetsWaitingForPmt.push([e,s,i]):this.processPes_(e,s,i)},this.processPes_=function(t,e,i){i.pid===this.programMapTable.video?i.streamType=b.H264_STREAM_TYPE:i.pid===this.programMapTable.audio?i.streamType=b.ADTS_STREAM_TYPE:i.streamType=this.programMapTable["timed-metadata"][i.pid],i.type="pes",i.data=t.subarray(e),this.trigger("data",i)}}).prototype=new s,O.STREAM_TYPES={h264:27,adts:15},(L=function(){var t,e=this,i=!1,s={data:[],size:0},a={data:[],size:0},n={data:[],size:0},r=function(t,i,s){var a,n,r=new Uint8Array(t.size),o={type:i},h=0,p=0;if(t.data.length&&!(t.size<9)){for(o.trackId=t.data[0].pid,h=0;h<t.data.length;h++)n=t.data[h],r.set(n.data,p),p+=n.data.byteLength;var d,l,c,u;l=o,u=(d=r)[0]<<16|d[1]<<8|d[2],l.data=new Uint8Array,1===u&&(l.packetLength=6+(d[4]<<8|d[5]),l.dataAlignmentIndicator=0!=(4&d[6]),192&(c=d[7])&&(l.pts=(14&d[9])<<27|(255&d[10])<<20|(254&d[11])<<12|(255&d[12])<<5|(254&d[13])>>>3,l.pts*=4,l.pts+=(6&d[13])>>>1,l.dts=l.pts,64&c&&(l.dts=(14&d[14])<<27|(255&d[15])<<20|(254&d[16])<<12|(255&d[17])<<5|(254&d[18])>>>3,l.dts*=4,l.dts+=(6&d[18])>>>1)),l.data=d.subarray(9+d[8])),a="video"===i||o.packetLength<=t.size,(s||a)&&(t.size=0,t.data.length=0),a&&e.trigger("data",o)}};L.prototype.init.call(this),this.push=function(o){({pat:function(){},pes:function(){var t,e;switch(o.streamType){case b.H264_STREAM_TYPE:t=s,e="video";break;case b.ADTS_STREAM_TYPE:t=a,e="audio";break;case b.METADATA_STREAM_TYPE:t=n,e="timed-metadata";break;default:return}o.payloadUnitStartIndicator&&r(t,e,!0),t.data.push(o),t.size+=o.data.byteLength},pmt:function(){var s={type:"metadata",tracks:[]};null!==(t=o.programMapTable).video&&s.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+t.video,codec:"avc",type:"video"}),null!==t.audio&&s.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+t.audio,codec:"adts",type:"audio"}),i=!0,e.trigger("data",s)}})[o.type]()},this.reset=function(){s.size=0,s.data.length=0,a.size=0,a.data.length=0,this.trigger("reset")},this.flushStreams_=function(){r(s,"video"),r(a,"audio"),r(n,"timed-metadata")},this.flush=function(){if(!i&&t){var s={type:"metadata",tracks:[]};null!==t.video&&s.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+t.video,codec:"avc",type:"video"}),null!==t.audio&&s.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+t.audio,codec:"adts",type:"audio"}),e.trigger("data",s)}i=!1,this.flushStreams_(),this.trigger("done")}}).prototype=new s;var N={PAT_PID:0,MP2T_PACKET_LENGTH:G,TransportPacketStream:x,TransportParseStream:O,ElementaryStream:L,TimestampRolloverStream:B,CaptionStream:w.CaptionStream,Cea608Stream:w.Cea608Stream,Cea708Stream:w.Cea708Stream,MetadataStream:I};for(var W in b)b.hasOwnProperty(W)&&(N[W]=b[W]);var F,z,V,Y,X=N,j=9e4;F=function(t){return t*j},z=function(t,e){return t*e},V=function(t){return t/j},Y=function(t,e){return t/e};var q,H=j,K=[96e3,88200,64e3,48e3,44100,32e3,24e3,22050,16e3,12e3,11025,8e3,7350];(q=function(t){var e,i=0;q.prototype.init.call(this),this.skipWarn_=function(t,e){this.trigger("log",{level:"warn",message:"adts skiping bytes "+t+" to "+e+" in frame "+i+" outside syncword"})},this.push=function(s){var a,n,r,o,h,p=0;if(t||(i=0),"audio"===s.type){var d;for(e&&e.length?(r=e,(e=new Uint8Array(r.byteLength+s.data.byteLength)).set(r),e.set(s.data,r.byteLength)):e=s.data;p+7<e.length;)if(255===e[p]&&240==(246&e[p+1])){if("number"==typeof d&&(this.skipWarn_(d,p),d=null),n=2*(1&~e[p+1]),a=(3&e[p+3])<<11|e[p+4]<<3|(224&e[p+5])>>5,h=(o=1024*(1+(3&e[p+6])))*H/K[(60&e[p+2])>>>2],e.byteLength-p<a)break;this.trigger("data",{pts:s.pts+i*h,dts:s.dts+i*h,sampleCount:o,audioobjecttype:1+(e[p+2]>>>6&3),channelcount:(1&e[p+2])<<2|(192&e[p+3])>>>6,samplerate:K[(60&e[p+2])>>>2],samplingfrequencyindex:(60&e[p+2])>>>2,samplesize:16,data:e.subarray(p+7+n,p+a)}),i++,p+=a}else"number"!=typeof d&&(d=p),p++;"number"==typeof d&&(this.skipWarn_(d,p),d=null),e=e.subarray(p)}},this.flush=function(){i=0,this.trigger("done")},this.reset=function(){e=void 0,this.trigger("reset")},this.endTimeline=function(){e=void 0,this.trigger("endedtimeline")}}).prototype=new s;var Z,$,J,Q=q,tt=function(t){var e=t.byteLength,i=0,s=0;this.length=function(){return 8*e},this.bitsAvailable=function(){return 8*e+s},this.loadWord=function(){var a=t.byteLength-e,n=new Uint8Array(4),r=Math.min(4,e);if(0===r)throw new Error("no bytes available");n.set(t.subarray(a,a+r)),i=new DataView(n.buffer).getUint32(0),s=8*r,e-=r},this.skipBits=function(t){var a;s>t?(i<<=t,s-=t):(t-=s,t-=8*(a=Math.floor(t/8)),e-=a,this.loadWord(),i<<=t,s-=t)},this.readBits=function(t){var a=Math.min(s,t),n=i>>>32-a;return(s-=a)>0?i<<=a:e>0&&this.loadWord(),(a=t-a)>0?n<<a|this.readBits(a):n},this.skipLeadingZeros=function(){var t;for(t=0;t<s;++t)if(0!=(i&2147483648>>>t))return i<<=t,s-=t,t;return this.loadWord(),t+this.skipLeadingZeros()},this.skipUnsignedExpGolomb=function(){this.skipBits(1+this.skipLeadingZeros())},this.skipExpGolomb=function(){this.skipBits(1+this.skipLeadingZeros())},this.readUnsignedExpGolomb=function(){var t=this.skipLeadingZeros();return this.readBits(t+1)-1},this.readExpGolomb=function(){var t=this.readUnsignedExpGolomb();return 1&t?1+t>>>1:-1*(t>>>1)},this.readBoolean=function(){return 1===this.readBits(1)},this.readUnsignedByte=function(){return this.readBits(8)},this.loadWord()};($=function(){var t,e,i=0;$.prototype.init.call(this),this.push=function(s){var a;e?((a=new Uint8Array(e.byteLength+s.data.byteLength)).set(e),a.set(s.data,e.byteLength),e=a):e=s.data;for(var n=e.byteLength;i<n-3;i++)if(1===e[i+2]){t=i+5;break}for(;t<n;)switch(e[t]){case 0:if(0!==e[t-1]){t+=2;break}if(0!==e[t-2]){t++;break}i+3!==t-2&&this.trigger("data",e.subarray(i+3,t-2));do{t++}while(1!==e[t]&&t<n);i=t-2,t+=3;break;case 1:if(0!==e[t-1]||0!==e[t-2]){t+=3;break}this.trigger("data",e.subarray(i+3,t-2)),i=t-2,t+=3;break;default:t+=3}e=e.subarray(i),t-=i,i=0},this.reset=function(){e=null,i=0,this.trigger("reset")},this.flush=function(){e&&e.byteLength>3&&this.trigger("data",e.subarray(i+3)),e=null,i=0,this.trigger("done")},this.endTimeline=function(){this.flush(),this.trigger("endedtimeline")}}).prototype=new s,J={100:!0,110:!0,122:!0,244:!0,44:!0,83:!0,86:!0,118:!0,128:!0,138:!0,139:!0,134:!0},(Z=function(){var t,e,i,s,a,n,r,o=new $;Z.prototype.init.call(this),t=this,this.push=function(t){"video"===t.type&&(e=t.trackId,i=t.pts,s=t.dts,o.push(t))},o.on("data",(function(r){var o={trackId:e,pts:i,dts:s,data:r,nalUnitTypeCode:31&r[0]};switch(o.nalUnitTypeCode){case 5:o.nalUnitType="slice_layer_without_partitioning_rbsp_idr";break;case 6:o.nalUnitType="sei_rbsp",o.escapedRBSP=a(r.subarray(1));break;case 7:o.nalUnitType="seq_parameter_set_rbsp",o.escapedRBSP=a(r.subarray(1)),o.config=n(o.escapedRBSP);break;case 8:o.nalUnitType="pic_parameter_set_rbsp";break;case 9:o.nalUnitType="access_unit_delimiter_rbsp"}t.trigger("data",o)})),o.on("done",(function(){t.trigger("done")})),o.on("partialdone",(function(){t.trigger("partialdone")})),o.on("reset",(function(){t.trigger("reset")})),o.on("endedtimeline",(function(){t.trigger("endedtimeline")})),this.flush=function(){o.flush()},this.partialFlush=function(){o.partialFlush()},this.reset=function(){o.reset()},this.endTimeline=function(){o.endTimeline()},r=function(t,e){var i,s=8,a=8;for(i=0;i<t;i++)0!==a&&(a=(s+e.readExpGolomb()+256)%256),s=0===a?s:a},a=function(t){for(var e,i,s=t.byteLength,a=[],n=1;n<s-2;)0===t[n]&&0===t[n+1]&&3===t[n+2]?(a.push(n+2),n+=2):n++;if(0===a.length)return t;e=s-a.length,i=new Uint8Array(e);var r=0;for(n=0;n<e;r++,n++)r===a[0]&&(r++,a.shift()),i[n]=t[r];return i},n=function(t){var e,i,s,a,n,o,h,p,d,l,c,u,f=0,g=0,y=0,m=0,_=[1,1];if(i=(e=new tt(t)).readUnsignedByte(),a=e.readUnsignedByte(),s=e.readUnsignedByte(),e.skipUnsignedExpGolomb(),J[i]&&(3===(n=e.readUnsignedExpGolomb())&&e.skipBits(1),e.skipUnsignedExpGolomb(),e.skipUnsignedExpGolomb(),e.skipBits(1),e.readBoolean()))for(c=3!==n?8:12,u=0;u<c;u++)e.readBoolean()&&r(u<6?16:64,e);if(e.skipUnsignedExpGolomb(),0===(o=e.readUnsignedExpGolomb()))e.readUnsignedExpGolomb();else if(1===o)for(e.skipBits(1),e.skipExpGolomb(),e.skipExpGolomb(),h=e.readUnsignedExpGolomb(),u=0;u<h;u++)e.skipExpGolomb();if(e.skipUnsignedExpGolomb(),e.skipBits(1),p=e.readUnsignedExpGolomb(),d=e.readUnsignedExpGolomb(),0===(l=e.readBits(1))&&e.skipBits(1),e.skipBits(1),e.readBoolean()&&(f=e.readUnsignedExpGolomb(),g=e.readUnsignedExpGolomb(),y=e.readUnsignedExpGolomb(),m=e.readUnsignedExpGolomb()),e.readBoolean()&&e.readBoolean()){switch(e.readUnsignedByte()){case 1:_=[1,1];break;case 2:_=[12,11];break;case 3:_=[10,11];break;case 4:_=[16,11];break;case 5:_=[40,33];break;case 6:_=[24,11];break;case 7:_=[20,11];break;case 8:_=[32,11];break;case 9:_=[80,33];break;case 10:_=[18,11];break;case 11:_=[15,11];break;case 12:_=[64,33];break;case 13:_=[160,99];break;case 14:_=[4,3];break;case 15:_=[3,2];break;case 16:_=[2,1];break;case 255:_=[e.readUnsignedByte()<<8|e.readUnsignedByte(),e.readUnsignedByte()<<8|e.readUnsignedByte()]}_&&(_[0],_[1])}return{profileIdc:i,levelIdc:s,profileCompatibility:a,width:16*(p+1)-2*f-2*g,height:(2-l)*(d+1)*16-2*y-2*m,sarRatio:_}}}).prototype=new s;var et={H264Stream:Z,NalByteStream:$},it=function t(e){this.numberOfTracks=0,this.metadataStream=e.metadataStream,this.videoTags=[],this.audioTags=[],this.videoTrack=null,this.audioTrack=null,this.pendingCaptions=[],this.pendingMetadata=[],this.pendingTracks=0,this.processedTracks=0,t.prototype.init.call(this),this.push=function(t){return t.text?this.pendingCaptions.push(t):t.frames?this.pendingMetadata.push(t):("video"===t.track.type&&(this.videoTrack=t.track,this.videoTags=t.tags,this.pendingTracks++),void("audio"===t.track.type&&(this.audioTrack=t.track,this.audioTags=t.tags,this.pendingTracks++)))}};(it.prototype=new s).flush=function(t){var e,i,s,a,n={tags:{},captions:[],captionStreams:{},metadata:[]};if(this.pendingTracks<this.numberOfTracks){if("VideoSegmentStream"!==t&&"AudioSegmentStream"!==t)return;if(0===this.pendingTracks&&(this.processedTracks++,this.processedTracks<this.numberOfTracks))return}if(this.processedTracks+=this.pendingTracks,this.pendingTracks=0,!(this.processedTracks<this.numberOfTracks)){for(this.videoTrack?a=this.videoTrack.timelineStartInfo.pts:this.audioTrack&&(a=this.audioTrack.timelineStartInfo.pts),n.tags.videoTags=this.videoTags,n.tags.audioTags=this.audioTags,s=0;s<this.pendingCaptions.length;s++)(i=this.pendingCaptions[s]).startTime=i.startPts-a,i.startTime/=9e4,i.endTime=i.endPts-a,i.endTime/=9e4,n.captionStreams[i.stream]=!0,n.captions.push(i);for(s=0;s<this.pendingMetadata.length;s++)(e=this.pendingMetadata[s]).cueTime=e.pts-a,e.cueTime/=9e4,n.metadata.push(e);n.metadata.dispatchType=this.metadataStream.dispatchType,this.videoTrack=null,this.audioTrack=null,this.videoTags=[],this.audioTags=[],this.pendingCaptions.length=0,this.pendingMetadata.length=0,this.pendingTracks=0,this.processedTracks=0,this.trigger("data",n),this.trigger("done")}};var st,at,nt,rt,ot,ht,pt=it,dt=function(){var t=this;this.list=[],this.push=function(t){this.list.push({bytes:t.bytes,dts:t.dts,pts:t.pts,keyFrame:t.keyFrame,metaDataTag:t.metaDataTag})},Object.defineProperty(this,"length",{get:function(){return t.list.length}})},lt=et.H264Stream;rt=function(t,e){"number"==typeof e.pts&&(void 0===t.timelineStartInfo.pts?t.timelineStartInfo.pts=e.pts:t.timelineStartInfo.pts=Math.min(t.timelineStartInfo.pts,e.pts)),"number"==typeof e.dts&&(void 0===t.timelineStartInfo.dts?t.timelineStartInfo.dts=e.dts:t.timelineStartInfo.dts=Math.min(t.timelineStartInfo.dts,e.dts))},ot=function(t,i){var s=new e(e.METADATA_TAG);return s.dts=i,s.pts=i,s.writeMetaDataDouble("videocodecid",7),s.writeMetaDataDouble("width",t.width),s.writeMetaDataDouble("height",t.height),s},ht=function(t,i){var s,a=new e(e.VIDEO_TAG,!0);for(a.dts=i,a.pts=i,a.writeByte(1),a.writeByte(t.profileIdc),a.writeByte(t.profileCompatibility),a.writeByte(t.levelIdc),a.writeByte(255),a.writeByte(225),a.writeShort(t.sps[0].length),a.writeBytes(t.sps[0]),a.writeByte(t.pps.length),s=0;s<t.pps.length;++s)a.writeShort(t.pps[s].length),a.writeBytes(t.pps[s]);return a},(nt=function(t){var i,s=[],a=[];nt.prototype.init.call(this),this.push=function(e){rt(t,e),t&&(t.audioobjecttype=e.audioobjecttype,t.channelcount=e.channelcount,t.samplerate=e.samplerate,t.samplingfrequencyindex=e.samplingfrequencyindex,t.samplesize=e.samplesize,t.extraData=t.audioobjecttype<<11|t.samplingfrequencyindex<<7|t.channelcount<<3),e.pts=Math.round(e.pts/90),e.dts=Math.round(e.dts/90),s.push(e)},this.flush=function(){var n,r,o,h=new dt;if(0!==s.length){for(o=-1/0;s.length;)n=s.shift(),a.length&&n.pts>=a[0]&&(o=a.shift(),this.writeMetaDataTags(h,o)),(t.extraData!==i||n.pts-o>=1e3)&&(this.writeMetaDataTags(h,n.pts),i=t.extraData,o=n.pts),(r=new e(e.AUDIO_TAG)).pts=n.pts,r.dts=n.dts,r.writeBytes(n.data),h.push(r.finalize());a.length=0,i=null,this.trigger("data",{track:t,tags:h.list}),this.trigger("done","AudioSegmentStream")}else this.trigger("done","AudioSegmentStream")},this.writeMetaDataTags=function(i,s){var a;(a=new e(e.METADATA_TAG)).pts=s,a.dts=s,a.writeMetaDataDouble("audiocodecid",10),a.writeMetaDataBoolean("stereo",2===t.channelcount),a.writeMetaDataDouble("audiosamplerate",t.samplerate),a.writeMetaDataDouble("audiosamplesize",16),i.push(a.finalize()),(a=new e(e.AUDIO_TAG,!0)).pts=s,a.dts=s,a.view.setUint16(a.position,t.extraData),a.position+=2,a.length=Math.max(a.length,a.position),i.push(a.finalize())},this.onVideoKeyFrame=function(t){a.push(t)}}).prototype=new s,(at=function(t){var i,s,a=[];at.prototype.init.call(this),this.finishFrame=function(e,a){if(a){if(i&&t&&t.newMetadata&&(a.keyFrame||0===e.length)){var n=ot(i,a.dts).finalize(),r=ht(t,a.dts).finalize();n.metaDataTag=r.metaDataTag=!0,e.push(n),e.push(r),t.newMetadata=!1,this.trigger("keyframe",a.dts)}a.endNalUnit(),e.push(a.finalize()),s=null}},this.push=function(e){rt(t,e),e.pts=Math.round(e.pts/90),e.dts=Math.round(e.dts/90),a.push(e)},this.flush=function(){for(var n,r=new dt;a.length&&"access_unit_delimiter_rbsp"!==a[0].nalUnitType;)a.shift();if(0!==a.length){for(;a.length;)"seq_parameter_set_rbsp"===(n=a.shift()).nalUnitType?(t.newMetadata=!0,i=n.config,t.width=i.width,t.height=i.height,t.sps=[n.data],t.profileIdc=i.profileIdc,t.levelIdc=i.levelIdc,t.profileCompatibility=i.profileCompatibility,s.endNalUnit()):"pic_parameter_set_rbsp"===n.nalUnitType?(t.newMetadata=!0,t.pps=[n.data],s.endNalUnit()):"access_unit_delimiter_rbsp"===n.nalUnitType?(s&&this.finishFrame(r,s),(s=new e(e.VIDEO_TAG)).pts=n.pts,s.dts=n.dts):("slice_layer_without_partitioning_rbsp_idr"===n.nalUnitType&&(s.keyFrame=!0),s.endNalUnit()),s.startNalUnit(),s.writeBytes(n.data);s&&this.finishFrame(r,s),this.trigger("data",{track:t,tags:r.list}),this.trigger("done","VideoSegmentStream")}else this.trigger("done","VideoSegmentStream")}}).prototype=new s,(st=function(t){var e,i,s,a,n,r,o,h,p,d,l,c,u=this;st.prototype.init.call(this),t=t||{},this.metadataStream=new X.MetadataStream,t.metadataStream=this.metadataStream,e=new X.TransportPacketStream,i=new X.TransportParseStream,s=new X.ElementaryStream,a=new X.TimestampRolloverStream("video"),n=new X.TimestampRolloverStream("audio"),r=new X.TimestampRolloverStream("timed-metadata"),o=new Q,h=new lt,c=new pt(t),e.pipe(i).pipe(s),s.pipe(a).pipe(h),s.pipe(n).pipe(o),s.pipe(r).pipe(this.metadataStream).pipe(c),l=new X.CaptionStream(t),h.pipe(l).pipe(c),s.on("data",(function(t){var e,i,s;if("metadata"===t.type){for(e=t.tracks.length;e--;)"video"===t.tracks[e].type?i=t.tracks[e]:"audio"===t.tracks[e].type&&(s=t.tracks[e]);i&&!p&&(c.numberOfTracks++,p=new at(i),h.pipe(p).pipe(c)),s&&!d&&(c.numberOfTracks++,d=new nt(s),o.pipe(d).pipe(c),p&&p.on("keyframe",d.onVideoKeyFrame))}})),this.push=function(t){e.push(t)},this.flush=function(){e.flush()},this.resetCaptions=function(){l.reset()},c.on("data",(function(t){u.trigger("data",t)})),c.on("done",(function(){u.trigger("done")}))}).prototype=new s;var ct=function(t,i,s){var a,n,r,o=new Uint8Array(9),h=new DataView(o.buffer);return t=t||0,i=void 0===i||i,s=void 0===s||s,h.setUint8(0,70),h.setUint8(1,76),h.setUint8(2,86),h.setUint8(3,1),h.setUint8(4,(i?4:0)|(s?1:0)),h.setUint32(5,o.byteLength),t<=0?((n=new Uint8Array(o.byteLength+4)).set(o),n.set([0,0,0,0],o.byteLength),n):((a=new e(e.METADATA_TAG)).pts=a.dts=0,a.writeMetaDataDouble("duration",t),r=a.finalize().length,(n=new Uint8Array(o.byteLength+r)).set(o),n.set(h.byteLength,r),n)};return{tag:e,Transmuxer:st,getFlvHeader:ct}}));
/*! @name mux.js @version 6.3.0 @license Apache-2.0 */
!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):(t="undefined"!=typeof globalThis?globalThis:t||self).muxjs=e()}(this,(function(){"use strict";var t;(t=function(e,i){var s,a=0,n=16384,r=function(t,e){var i,s=t.position+e;s<t.bytes.byteLength||((i=new Uint8Array(2*s)).set(t.bytes.subarray(0,t.position),0),t.bytes=i,t.view=new DataView(t.bytes.buffer))},o=t.widthBytes||new Uint8Array("width".length),h=t.heightBytes||new Uint8Array("height".length),p=t.videocodecidBytes||new Uint8Array("videocodecid".length);if(!t.widthBytes){for(s=0;s<"width".length;s++)o[s]="width".charCodeAt(s);for(s=0;s<"height".length;s++)h[s]="height".charCodeAt(s);for(s=0;s<"videocodecid".length;s++)p[s]="videocodecid".charCodeAt(s);t.widthBytes=o,t.heightBytes=h,t.videocodecidBytes=p}switch(this.keyFrame=!1,e){case t.VIDEO_TAG:this.length=16,n*=6;break;case t.AUDIO_TAG:this.length=13,this.keyFrame=!0;break;case t.METADATA_TAG:this.length=29,this.keyFrame=!0;break;default:throw new Error("Unknown FLV tag type")}this.bytes=new Uint8Array(n),this.view=new DataView(this.bytes.buffer),this.bytes[0]=e,this.position=this.length,this.keyFrame=i,this.pts=0,this.dts=0,this.writeBytes=function(t,e,i){var s,a=e||0;s=a+(i=i||t.byteLength),r(this,i),this.bytes.set(t.subarray(a,s),this.position),this.position+=i,this.length=Math.max(this.length,this.position)},this.writeByte=function(t){r(this,1),this.bytes[this.position]=t,this.position++,this.length=Math.max(this.length,this.position)},this.writeShort=function(t){r(this,2),this.view.setUint16(this.position,t),this.position+=2,this.length=Math.max(this.length,this.position)},this.negIndex=function(t){return this.bytes[this.length-t]},this.nalUnitSize=function(){return 0===a?0:this.length-(a+4)},this.startNalUnit=function(){if(a>0)throw new Error("Attempted to create new NAL wihout closing the old one");a=this.length,this.length+=4,this.position=this.length},this.endNalUnit=function(t){var e,i;this.length===a+4?this.length-=4:a>0&&(e=a+4,i=this.length-e,this.position=a,this.view.setUint32(this.position,i),this.position=this.length,t&&t.push(this.bytes.subarray(e,e+i))),a=0},this.writeMetaDataDouble=function(t,e){var i;if(r(this,2+t.length+9),this.view.setUint16(this.position,t.length),this.position+=2,"width"===t)this.bytes.set(o,this.position),this.position+=5;else if("height"===t)this.bytes.set(h,this.position),this.position+=6;else if("videocodecid"===t)this.bytes.set(p,this.position),this.position+=12;else for(i=0;i<t.length;i++)this.bytes[this.position]=t.charCodeAt(i),this.position++;this.position++,this.view.setFloat64(this.position,e),this.position+=8,this.length=Math.max(this.length,this.position),++a},this.writeMetaDataBoolean=function(t,e){var i;for(r(this,2),this.view.setUint16(this.position,t.length),this.position+=2,i=0;i<t.length;i++)r(this,1),this.bytes[this.position]=t.charCodeAt(i),this.position++;r(this,2),this.view.setUint8(this.position,1),this.position++,this.view.setUint8(this.position,e?1:0),this.position++,this.length=Math.max(this.length,this.position),++a},this.finalize=function(){var e,s;switch(this.bytes[0]){case t.VIDEO_TAG:this.bytes[11]=7|(this.keyFrame||i?16:32),this.bytes[12]=i?0:1,e=this.pts-this.dts,this.bytes[13]=(16711680&e)>>>16,this.bytes[14]=(65280&e)>>>8,this.bytes[15]=(255&e)>>>0;break;case t.AUDIO_TAG:this.bytes[11]=175,this.bytes[12]=i?0:1;break;case t.METADATA_TAG:this.position=11,this.view.setUint8(this.position,2),this.position++,this.view.setUint16(this.position,10),this.position+=2,this.bytes.set([111,110,77,101,116,97,68,97,116,97],this.position),this.position+=10,this.bytes[this.position]=8,this.position++,this.view.setUint32(this.position,a),this.position=this.length,this.bytes.set([0,0,9],this.position),this.position+=3,this.length=this.position}return s=this.length-11,this.bytes[1]=(16711680&s)>>>16,this.bytes[2]=(65280&s)>>>8,this.bytes[3]=(255&s)>>>0,this.bytes[4]=(16711680&this.dts)>>>16,this.bytes[5]=(65280&this.dts)>>>8,this.bytes[6]=(255&this.dts)>>>0,this.bytes[7]=(4278190080&this.dts)>>>24,this.bytes[8]=0,this.bytes[9]=0,this.bytes[10]=0,r(this,4),this.view.setUint32(this.length,this.length),this.length+=4,this.position+=4,this.bytes=this.bytes.subarray(0,this.length),this.frameTime=t.frameTime(this.bytes),this}}).AUDIO_TAG=8,t.VIDEO_TAG=9,t.METADATA_TAG=18,t.isAudioFrame=function(e){return t.AUDIO_TAG===e[0]},t.isVideoFrame=function(e){return t.VIDEO_TAG===e[0]},t.isMetaData=function(e){return t.METADATA_TAG===e[0]},t.isKeyFrame=function(e){return t.isVideoFrame(e)?23===e[11]:!!t.isAudioFrame(e)||!!t.isMetaData(e)},t.frameTime=function(t){var e=t[4]<<16;return e|=t[5]<<8,e|=t[6]<<0,e|=t[7]<<24};var e=t,i=function(){this.init=function(){var t={};this.on=function(e,i){t[e]||(t[e]=[]),t[e]=t[e].concat(i)},this.off=function(e,i){var s;return!!t[e]&&(s=t[e].indexOf(i),t[e]=t[e].slice(),t[e].splice(s,1),s>-1)},this.trigger=function(e){var i,s,a,n;if(i=t[e])if(2===arguments.length)for(a=i.length,s=0;s<a;++s)i[s].call(this,arguments[1]);else{for(n=[],s=arguments.length,s=1;s<arguments.length;++s)n.push(arguments[s]);for(a=i.length,s=0;s<a;++s)i[s].apply(this,n)}},this.dispose=function(){t={}}}};i.prototype.pipe=function(t){return this.on("data",(function(e){t.push(e)})),this.on("done",(function(e){t.flush(e)})),this.on("partialdone",(function(e){t.partialFlush(e)})),this.on("endedtimeline",(function(e){t.endTimeline(e)})),this.on("reset",(function(e){t.reset(e)})),t},i.prototype.push=function(t){this.trigger("data",t)},i.prototype.flush=function(t){this.trigger("done",t)},i.prototype.partialFlush=function(t){this.trigger("partialdone",t)},i.prototype.endTimeline=function(t){this.trigger("endedtimeline",t)},i.prototype.reset=function(t){this.trigger("reset",t)};var s=i,a=function(t){for(var e=0,i={payloadType:-1,payloadSize:0},s=0,a=0;e<t.byteLength&&128!==t[e];){for(;255===t[e];)s+=255,e++;for(s+=t[e++];255===t[e];)a+=255,e++;if(a+=t[e++],!i.payload&&4===s){if("GA94"===String.fromCharCode(t[e+3],t[e+4],t[e+5],t[e+6])){i.payloadType=s,i.payloadSize=a,i.payload=t.subarray(e,e+a);break}i.payload=void 0}e+=a,s=0,a=0}return i},n=function(t){return 181!==t.payload[0]||49!=(t.payload[1]<<8|t.payload[2])||"GA94"!==String.fromCharCode(t.payload[3],t.payload[4],t.payload[5],t.payload[6])||3!==t.payload[7]?null:t.payload.subarray(8,t.payload.length-1)},r=function(t,e){var i,s,a,n,r=[];if(!(64&e[0]))return r;for(s=31&e[0],i=0;i<s;i++)n={type:3&e[(a=3*i)+2],pts:t},4&e[a+2]&&(n.ccData=e[a+3]<<8|e[a+4],r.push(n));return r},o=4,h=function t(e){e=e||{},t.prototype.init.call(this),this.parse708captions_="boolean"!=typeof e.parse708captions||e.parse708captions,this.captionPackets_=[],this.ccStreams_=[new _(0,0),new _(0,1),new _(1,0),new _(1,1)],this.parse708captions_&&(this.cc708Stream_=new u({captionServices:e.captionServices})),this.reset(),this.ccStreams_.forEach((function(t){t.on("data",this.trigger.bind(this,"data")),t.on("partialdone",this.trigger.bind(this,"partialdone")),t.on("done",this.trigger.bind(this,"done"))}),this),this.parse708captions_&&(this.cc708Stream_.on("data",this.trigger.bind(this,"data")),this.cc708Stream_.on("partialdone",this.trigger.bind(this,"partialdone")),this.cc708Stream_.on("done",this.trigger.bind(this,"done")))};(h.prototype=new s).push=function(t){var e,i,s;if("sei_rbsp"===t.nalUnitType&&(e=a(t.escapedRBSP)).payload&&e.payloadType===o&&(i=n(e)))if(t.dts<this.latestDts_)this.ignoreNextEqualDts_=!0;else{if(t.dts===this.latestDts_&&this.ignoreNextEqualDts_)return this.numSameDts_--,void(this.numSameDts_||(this.ignoreNextEqualDts_=!1));s=r(t.pts,i),this.captionPackets_=this.captionPackets_.concat(s),this.latestDts_!==t.dts&&(this.numSameDts_=0),this.numSameDts_++,this.latestDts_=t.dts}},h.prototype.flushCCStreams=function(t){this.ccStreams_.forEach((function(e){return"flush"===t?e.flush():e.partialFlush()}),this)},h.prototype.flushStream=function(t){this.captionPackets_.length?(this.captionPackets_.forEach((function(t,e){t.presortIndex=e})),this.captionPackets_.sort((function(t,e){return t.pts===e.pts?t.presortIndex-e.presortIndex:t.pts-e.pts})),this.captionPackets_.forEach((function(t){t.type<2?this.dispatchCea608Packet(t):this.dispatchCea708Packet(t)}),this),this.captionPackets_.length=0,this.flushCCStreams(t)):this.flushCCStreams(t)},h.prototype.flush=function(){return this.flushStream("flush")},h.prototype.partialFlush=function(){return this.flushStream("partialFlush")},h.prototype.reset=function(){this.latestDts_=null,this.ignoreNextEqualDts_=!1,this.numSameDts_=0,this.activeCea608Channel_=[null,null],this.ccStreams_.forEach((function(t){t.reset()}))},h.prototype.dispatchCea608Packet=function(t){this.setsTextOrXDSActive(t)?this.activeCea608Channel_[t.type]=null:this.setsChannel1Active(t)?this.activeCea608Channel_[t.type]=0:this.setsChannel2Active(t)&&(this.activeCea608Channel_[t.type]=1),null!==this.activeCea608Channel_[t.type]&&this.ccStreams_[(t.type<<1)+this.activeCea608Channel_[t.type]].push(t)},h.prototype.setsChannel1Active=function(t){return 4096==(30720&t.ccData)},h.prototype.setsChannel2Active=function(t){return 6144==(30720&t.ccData)},h.prototype.setsTextOrXDSActive=function(t){return 256==(28928&t.ccData)||4138==(30974&t.ccData)||6186==(30974&t.ccData)},h.prototype.dispatchCea708Packet=function(t){this.parse708captions_&&this.cc708Stream_.push(t)};var p={127:9834,4128:32,4129:160,4133:8230,4138:352,4140:338,4144:9608,4145:8216,4146:8217,4147:8220,4148:8221,4149:8226,4153:8482,4154:353,4156:339,4157:8480,4159:376,4214:8539,4215:8540,4216:8541,4217:8542,4218:9168,4219:9124,4220:9123,4221:9135,4222:9126,4223:9121,4256:12600},d=function(t){return 32<=t&&t<=127||160<=t&&t<=255},l=function(t){this.windowNum=t,this.reset()};l.prototype.reset=function(){this.clearText(),this.pendingNewLine=!1,this.winAttr={},this.penAttr={},this.penLoc={},this.penColor={},this.visible=0,this.rowLock=0,this.columnLock=0,this.priority=0,this.relativePositioning=0,this.anchorVertical=0,this.anchorHorizontal=0,this.anchorPoint=0,this.rowCount=1,this.virtualRowCount=this.rowCount+1,this.columnCount=41,this.windowStyle=0,this.penStyle=0},l.prototype.getText=function(){return this.rows.join("\n")},l.prototype.clearText=function(){this.rows=[""],this.rowIdx=0},l.prototype.newLine=function(t){for(this.rows.length>=this.virtualRowCount&&"function"==typeof this.beforeRowOverflow&&this.beforeRowOverflow(t),this.rows.length>0&&(this.rows.push(""),this.rowIdx++);this.rows.length>this.virtualRowCount;)this.rows.shift(),this.rowIdx--},l.prototype.isEmpty=function(){return 0===this.rows.length||1===this.rows.length&&""===this.rows[0]},l.prototype.addText=function(t){this.rows[this.rowIdx]+=t},l.prototype.backspace=function(){if(!this.isEmpty()){var t=this.rows[this.rowIdx];this.rows[this.rowIdx]=t.substr(0,t.length-1)}};var c=function(t,e,i){this.serviceNum=t,this.text="",this.currentWindow=new l(-1),this.windows=[],this.stream=i,"string"==typeof e&&this.createTextDecoder(e)};c.prototype.init=function(t,e){this.startPts=t;for(var i=0;i<8;i++)this.windows[i]=new l(i),"function"==typeof e&&(this.windows[i].beforeRowOverflow=e)},c.prototype.setCurrentWindow=function(t){this.currentWindow=this.windows[t]},c.prototype.createTextDecoder=function(t){if("undefined"==typeof TextDecoder)this.stream.trigger("log",{level:"warn",message:"The `encoding` option is unsupported without TextDecoder support"});else try{this.textDecoder_=new TextDecoder(t)}catch(e){this.stream.trigger("log",{level:"warn",message:"TextDecoder could not be created with "+t+" encoding. "+e})}};var u=function t(e){e=e||{},t.prototype.init.call(this);var i,s=this,a=e.captionServices||{},n={};Object.keys(a).forEach((function(t){i=a[t],/^SERVICE/.test(t)&&(n[t]=i.encoding)})),this.serviceEncodings=n,this.current708Packet=null,this.services={},this.push=function(t){3===t.type?(s.new708Packet(),s.add708Bytes(t)):(null===s.current708Packet&&s.new708Packet(),s.add708Bytes(t))}};u.prototype=new s,u.prototype.new708Packet=function(){null!==this.current708Packet&&this.push708Packet(),this.current708Packet={data:[],ptsVals:[]}},u.prototype.add708Bytes=function(t){var e=t.ccData,i=e>>>8,s=255&e;this.current708Packet.ptsVals.push(t.pts),this.current708Packet.data.push(i),this.current708Packet.data.push(s)},u.prototype.push708Packet=function(){var t=this.current708Packet,e=t.data,i=null,s=null,a=0,n=e[a++];for(t.seq=n>>6,t.sizeCode=63&n;a<e.length;a++)s=31&(n=e[a++]),7===(i=n>>5)&&s>0&&(i=n=e[a++]),this.pushServiceBlock(i,a,s),s>0&&(a+=s-1)},u.prototype.pushServiceBlock=function(t,e,i){var s,a=e,n=this.current708Packet.data,r=this.services[t];for(r||(r=this.initService(t,a));a<e+i&&a<n.length;a++)s=n[a],d(s)?a=this.handleText(a,r):24===s?a=this.multiByteCharacter(a,r):16===s?a=this.extendedCommands(a,r):128<=s&&s<=135?a=this.setCurrentWindow(a,r):152<=s&&s<=159?a=this.defineWindow(a,r):136===s?a=this.clearWindows(a,r):140===s?a=this.deleteWindows(a,r):137===s?a=this.displayWindows(a,r):138===s?a=this.hideWindows(a,r):139===s?a=this.toggleWindows(a,r):151===s?a=this.setWindowAttributes(a,r):144===s?a=this.setPenAttributes(a,r):145===s?a=this.setPenColor(a,r):146===s?a=this.setPenLocation(a,r):143===s?r=this.reset(a,r):8===s?r.currentWindow.backspace():12===s?r.currentWindow.clearText():13===s?r.currentWindow.pendingNewLine=!0:14===s?r.currentWindow.clearText():141===s&&a++},u.prototype.extendedCommands=function(t,e){var i=this.current708Packet.data[++t];return d(i)&&(t=this.handleText(t,e,{isExtended:!0})),t},u.prototype.getPts=function(t){return this.current708Packet.ptsVals[Math.floor(t/2)]},u.prototype.initService=function(t,e){var i,s,a=this;return(i="SERVICE"+t)in this.serviceEncodings&&(s=this.serviceEncodings[i]),this.services[t]=new c(t,s,a),this.services[t].init(this.getPts(e),(function(e){a.flushDisplayed(e,a.services[t])})),this.services[t]},u.prototype.handleText=function(t,e,i){var s,a,n,r,o=i&&i.isExtended,h=i&&i.isMultiByte,d=this.current708Packet.data,l=o?4096:0,c=d[t],u=d[t+1],f=e.currentWindow;return e.textDecoder_&&!o?(h?(a=[c,u],t++):a=[c],s=e.textDecoder_.decode(new Uint8Array(a))):(r=p[n=l|c]||n,s=4096&n&&n===r?"":String.fromCharCode(r)),f.pendingNewLine&&!f.isEmpty()&&f.newLine(this.getPts(t)),f.pendingNewLine=!1,f.addText(s),t},u.prototype.multiByteCharacter=function(t,e){var i=this.current708Packet.data,s=i[t+1],a=i[t+2];return d(s)&&d(a)&&(t=this.handleText(++t,e,{isMultiByte:!0})),t},u.prototype.setCurrentWindow=function(t,e){var i=7&this.current708Packet.data[t];return e.setCurrentWindow(i),t},u.prototype.defineWindow=function(t,e){var i=this.current708Packet.data,s=i[t],a=7&s;e.setCurrentWindow(a);var n=e.currentWindow;return s=i[++t],n.visible=(32&s)>>5,n.rowLock=(16&s)>>4,n.columnLock=(8&s)>>3,n.priority=7&s,s=i[++t],n.relativePositioning=(128&s)>>7,n.anchorVertical=127&s,s=i[++t],n.anchorHorizontal=s,s=i[++t],n.anchorPoint=(240&s)>>4,n.rowCount=15&s,s=i[++t],n.columnCount=63&s,s=i[++t],n.windowStyle=(56&s)>>3,n.penStyle=7&s,n.virtualRowCount=n.rowCount+1,t},u.prototype.setWindowAttributes=function(t,e){var i=this.current708Packet.data,s=i[t],a=e.currentWindow.winAttr;return s=i[++t],a.fillOpacity=(192&s)>>6,a.fillRed=(48&s)>>4,a.fillGreen=(12&s)>>2,a.fillBlue=3&s,s=i[++t],a.borderType=(192&s)>>6,a.borderRed=(48&s)>>4,a.borderGreen=(12&s)>>2,a.borderBlue=3&s,s=i[++t],a.borderType+=(128&s)>>5,a.wordWrap=(64&s)>>6,a.printDirection=(48&s)>>4,a.scrollDirection=(12&s)>>2,a.justify=3&s,s=i[++t],a.effectSpeed=(240&s)>>4,a.effectDirection=(12&s)>>2,a.displayEffect=3&s,t},u.prototype.flushDisplayed=function(t,e){for(var i=[],s=0;s<8;s++)e.windows[s].visible&&!e.windows[s].isEmpty()&&i.push(e.windows[s].getText());e.endPts=t,e.text=i.join("\n\n"),this.pushCaption(e),e.startPts=t},u.prototype.pushCaption=function(t){""!==t.text&&(this.trigger("data",{startPts:t.startPts,endPts:t.endPts,text:t.text,stream:"cc708_"+t.serviceNum}),t.text="",t.startPts=t.endPts)},u.prototype.displayWindows=function(t,e){var i=this.current708Packet.data[++t],s=this.getPts(t);this.flushDisplayed(s,e);for(var a=0;a<8;a++)i&1<<a&&(e.windows[a].visible=1);return t},u.prototype.hideWindows=function(t,e){var i=this.current708Packet.data[++t],s=this.getPts(t);this.flushDisplayed(s,e);for(var a=0;a<8;a++)i&1<<a&&(e.windows[a].visible=0);return t},u.prototype.toggleWindows=function(t,e){var i=this.current708Packet.data[++t],s=this.getPts(t);this.flushDisplayed(s,e);for(var a=0;a<8;a++)i&1<<a&&(e.windows[a].visible^=1);return t},u.prototype.clearWindows=function(t,e){var i=this.current708Packet.data[++t],s=this.getPts(t);this.flushDisplayed(s,e);for(var a=0;a<8;a++)i&1<<a&&e.windows[a].clearText();return t},u.prototype.deleteWindows=function(t,e){var i=this.current708Packet.data[++t],s=this.getPts(t);this.flushDisplayed(s,e);for(var a=0;a<8;a++)i&1<<a&&e.windows[a].reset();return t},u.prototype.setPenAttributes=function(t,e){var i=this.current708Packet.data,s=i[t],a=e.currentWindow.penAttr;return s=i[++t],a.textTag=(240&s)>>4,a.offset=(12&s)>>2,a.penSize=3&s,s=i[++t],a.italics=(128&s)>>7,a.underline=(64&s)>>6,a.edgeType=(56&s)>>3,a.fontStyle=7&s,t},u.prototype.setPenColor=function(t,e){var i=this.current708Packet.data,s=i[t],a=e.currentWindow.penColor;return s=i[++t],a.fgOpacity=(192&s)>>6,a.fgRed=(48&s)>>4,a.fgGreen=(12&s)>>2,a.fgBlue=3&s,s=i[++t],a.bgOpacity=(192&s)>>6,a.bgRed=(48&s)>>4,a.bgGreen=(12&s)>>2,a.bgBlue=3&s,s=i[++t],a.edgeRed=(48&s)>>4,a.edgeGreen=(12&s)>>2,a.edgeBlue=3&s,t},u.prototype.setPenLocation=function(t,e){var i=this.current708Packet.data,s=i[t],a=e.currentWindow.penLoc;return e.currentWindow.pendingNewLine=!0,s=i[++t],a.row=15&s,s=i[++t],a.column=63&s,t},u.prototype.reset=function(t,e){var i=this.getPts(t);return this.flushDisplayed(i,e),this.initService(e.serviceNum,t)};var f={42:225,92:233,94:237,95:243,96:250,123:231,124:247,125:209,126:241,127:9608,304:174,305:176,306:189,307:191,308:8482,309:162,310:163,311:9834,312:224,313:160,314:232,315:226,316:234,317:238,318:244,319:251,544:193,545:201,546:211,547:218,548:220,549:252,550:8216,551:161,552:42,553:39,554:8212,555:169,556:8480,557:8226,558:8220,559:8221,560:192,561:194,562:199,563:200,564:202,565:203,566:235,567:206,568:207,569:239,570:212,571:217,572:249,573:219,574:171,575:187,800:195,801:227,802:205,803:204,804:236,805:210,806:242,807:213,808:245,809:123,810:125,811:92,812:94,813:95,814:124,815:126,816:196,817:228,818:214,819:246,820:223,821:165,822:164,823:9474,824:197,825:229,826:216,827:248,828:9484,829:9488,830:9492,831:9496},g=function(t){return null===t?"":(t=f[t]||t,String.fromCharCode(t))},y=[4352,4384,4608,4640,5376,5408,5632,5664,5888,5920,4096,4864,4896,5120,5152],m=function(){for(var t=[],e=15;e--;)t.push("");return t},_=function t(e,i){t.prototype.init.call(this),this.field_=e||0,this.dataChannel_=i||0,this.name_="CC"+(1+(this.field_<<1|this.dataChannel_)),this.setConstants(),this.reset(),this.push=function(t){var e,i,s,a,n;if((e=32639&t.ccData)!==this.lastControlCode_){if(4096==(61440&e)?this.lastControlCode_=e:e!==this.PADDING_&&(this.lastControlCode_=null),s=e>>>8,a=255&e,e!==this.PADDING_)if(e===this.RESUME_CAPTION_LOADING_)this.mode_="popOn";else if(e===this.END_OF_CAPTION_)this.mode_="popOn",this.clearFormatting(t.pts),this.flushDisplayed(t.pts),i=this.displayed_,this.displayed_=this.nonDisplayed_,this.nonDisplayed_=i,this.startPts_=t.pts;else if(e===this.ROLL_UP_2_ROWS_)this.rollUpRows_=2,this.setRollUp(t.pts);else if(e===this.ROLL_UP_3_ROWS_)this.rollUpRows_=3,this.setRollUp(t.pts);else if(e===this.ROLL_UP_4_ROWS_)this.rollUpRows_=4,this.setRollUp(t.pts);else if(e===this.CARRIAGE_RETURN_)this.clearFormatting(t.pts),this.flushDisplayed(t.pts),this.shiftRowsUp_(),this.startPts_=t.pts;else if(e===this.BACKSPACE_)"popOn"===this.mode_?this.nonDisplayed_[this.row_]=this.nonDisplayed_[this.row_].slice(0,-1):this.displayed_[this.row_]=this.displayed_[this.row_].slice(0,-1);else if(e===this.ERASE_DISPLAYED_MEMORY_)this.flushDisplayed(t.pts),this.displayed_=m();else if(e===this.ERASE_NON_DISPLAYED_MEMORY_)this.nonDisplayed_=m();else if(e===this.RESUME_DIRECT_CAPTIONING_)"paintOn"!==this.mode_&&(this.flushDisplayed(t.pts),this.displayed_=m()),this.mode_="paintOn",this.startPts_=t.pts;else if(this.isSpecialCharacter(s,a))n=g((s=(3&s)<<8)|a),this[this.mode_](t.pts,n),this.column_++;else if(this.isExtCharacter(s,a))"popOn"===this.mode_?this.nonDisplayed_[this.row_]=this.nonDisplayed_[this.row_].slice(0,-1):this.displayed_[this.row_]=this.displayed_[this.row_].slice(0,-1),n=g((s=(3&s)<<8)|a),this[this.mode_](t.pts,n),this.column_++;else if(this.isMidRowCode(s,a))this.clearFormatting(t.pts),this[this.mode_](t.pts," "),this.column_++,14==(14&a)&&this.addFormatting(t.pts,["i"]),1==(1&a)&&this.addFormatting(t.pts,["u"]);else if(this.isOffsetControlCode(s,a))this.column_+=3&a;else if(this.isPAC(s,a)){var r=y.indexOf(7968&e);"rollUp"===this.mode_&&(r-this.rollUpRows_+1<0&&(r=this.rollUpRows_-1),this.setRollUp(t.pts,r)),r!==this.row_&&(this.clearFormatting(t.pts),this.row_=r),1&a&&-1===this.formatting_.indexOf("u")&&this.addFormatting(t.pts,["u"]),16==(16&e)&&(this.column_=4*((14&e)>>1)),this.isColorPAC(a)&&14==(14&a)&&this.addFormatting(t.pts,["i"])}else this.isNormalChar(s)&&(0===a&&(a=null),n=g(s),n+=g(a),this[this.mode_](t.pts,n),this.column_+=n.length)}else this.lastControlCode_=null}};_.prototype=new s,_.prototype.flushDisplayed=function(t){var e=this.displayed_.map((function(t,e){try{return t.trim()}catch(t){return this.trigger("log",{level:"warn",message:"Skipping a malformed 608 caption at index "+e+"."}),""}}),this).join("\n").replace(/^\n+|\n+$/g,"");e.length&&this.trigger("data",{startPts:this.startPts_,endPts:t,text:e,stream:this.name_})},_.prototype.reset=function(){this.mode_="popOn",this.topRow_=0,this.startPts_=0,this.displayed_=m(),this.nonDisplayed_=m(),this.lastControlCode_=null,this.column_=0,this.row_=14,this.rollUpRows_=2,this.formatting_=[]},_.prototype.setConstants=function(){0===this.dataChannel_?(this.BASE_=16,this.EXT_=17,this.CONTROL_=(20|this.field_)<<8,this.OFFSET_=23):1===this.dataChannel_&&(this.BASE_=24,this.EXT_=25,this.CONTROL_=(28|this.field_)<<8,this.OFFSET_=31),this.PADDING_=0,this.RESUME_CAPTION_LOADING_=32|this.CONTROL_,this.END_OF_CAPTION_=47|this.CONTROL_,this.ROLL_UP_2_ROWS_=37|this.CONTROL_,this.ROLL_UP_3_ROWS_=38|this.CONTROL_,this.ROLL_UP_4_ROWS_=39|this.CONTROL_,this.CARRIAGE_RETURN_=45|this.CONTROL_,this.RESUME_DIRECT_CAPTIONING_=41|this.CONTROL_,this.BACKSPACE_=33|this.CONTROL_,this.ERASE_DISPLAYED_MEMORY_=44|this.CONTROL_,this.ERASE_NON_DISPLAYED_MEMORY_=46|this.CONTROL_},_.prototype.isSpecialCharacter=function(t,e){return t===this.EXT_&&e>=48&&e<=63},_.prototype.isExtCharacter=function(t,e){return(t===this.EXT_+1||t===this.EXT_+2)&&e>=32&&e<=63},_.prototype.isMidRowCode=function(t,e){return t===this.EXT_&&e>=32&&e<=47},_.prototype.isOffsetControlCode=function(t,e){return t===this.OFFSET_&&e>=33&&e<=35},_.prototype.isPAC=function(t,e){return t>=this.BASE_&&t<this.BASE_+8&&e>=64&&e<=127},_.prototype.isColorPAC=function(t){return t>=64&&t<=79||t>=96&&t<=127},_.prototype.isNormalChar=function(t){return t>=32&&t<=127},_.prototype.setRollUp=function(t,e){if("rollUp"!==this.mode_&&(this.row_=14,this.mode_="rollUp",this.flushDisplayed(t),this.nonDisplayed_=m(),this.displayed_=m()),void 0!==e&&e!==this.row_)for(var i=0;i<this.rollUpRows_;i++)this.displayed_[e-i]=this.displayed_[this.row_-i],this.displayed_[this.row_-i]="";void 0===e&&(e=this.row_),this.topRow_=e-this.rollUpRows_+1},_.prototype.addFormatting=function(t,e){this.formatting_=this.formatting_.concat(e);var i=e.reduce((function(t,e){return t+"<"+e+">"}),"");this[this.mode_](t,i)},_.prototype.clearFormatting=function(t){if(this.formatting_.length){var e=this.formatting_.reverse().reduce((function(t,e){return t+"</"+e+">"}),"");this.formatting_=[],this[this.mode_](t,e)}},_.prototype.popOn=function(t,e){var i=this.nonDisplayed_[this.row_];i+=e,this.nonDisplayed_[this.row_]=i},_.prototype.rollUp=function(t,e){var i=this.displayed_[this.row_];i+=e,this.displayed_[this.row_]=i},_.prototype.shiftRowsUp_=function(){var t;for(t=0;t<this.topRow_;t++)this.displayed_[t]="";for(t=this.row_+1;t<15;t++)this.displayed_[t]="";for(t=this.topRow_;t<this.row_;t++)this.displayed_[t]=this.displayed_[t+1];this.displayed_[this.row_]=""},_.prototype.paintOn=function(t,e){var i=this.displayed_[this.row_];i+=e,this.displayed_[this.row_]=i};var w={CaptionStream:h,Cea608Stream:_,Cea708Stream:u},b={H264_STREAM_TYPE:27,ADTS_STREAM_TYPE:15,METADATA_STREAM_TYPE:21},v="shared",T=function(t,e){var i=1;for(t>e&&(i=-1);Math.abs(e-t)>4294967296;)t+=8589934592*i;return t},k=function t(e){var i,s;t.prototype.init.call(this),this.type_=e||v,this.push=function(t){this.type_!==v&&t.type!==this.type_||(void 0===s&&(s=t.dts),t.dts=T(t.dts,s),t.pts=T(t.pts,s),i=t.dts,this.trigger("data",t))},this.flush=function(){s=i,this.trigger("done")},this.endTimeline=function(){this.flush(),this.trigger("endedtimeline")},this.discontinuity=function(){s=void 0,i=void 0},this.reset=function(){this.discontinuity(),this.trigger("reset")}};k.prototype=new s;var S,A=k,C=function(t,e,i){if(!t)return-1;for(var s=i;s<t.length;s++)if(t[s]===e)return s;return-1},D=3,P=function(t,e,i){var s,a="";for(s=e;s<i;s++)a+="%"+("00"+t[s].toString(16)).slice(-2);return a},E=function(t,e,i){return decodeURIComponent(P(t,e,i))},U=function(t,e,i){return unescape(P(t,e,i))},R=function(t){return t[0]<<21|t[1]<<14|t[2]<<7|t[3]},M={APIC:function(t){var e,i,s=1;t.data[0]===D&&((e=C(t.data,0,s))<0||(t.mimeType=U(t.data,s,e),s=e+1,t.pictureType=t.data[s],s++,(i=C(t.data,0,s))<0||(t.description=E(t.data,s,i),s=i+1,"--\x3e"===t.mimeType?t.url=U(t.data,s,t.data.length):t.pictureData=t.data.subarray(s,t.data.length))))},"T*":function(t){t.data[0]===D&&(t.value=E(t.data,1,t.data.length).replace(/\0*$/,""),t.values=t.value.split("\0"))},TXXX:function(t){var e;t.data[0]===D&&-1!==(e=C(t.data,0,1))&&(t.description=E(t.data,1,e),t.value=E(t.data,e+1,t.data.length).replace(/\0*$/,""),t.data=t.value)},"W*":function(t){t.url=U(t.data,0,t.data.length).replace(/\0.*$/,"")},WXXX:function(t){var e;t.data[0]===D&&-1!==(e=C(t.data,0,1))&&(t.description=E(t.data,1,e),t.url=U(t.data,e+1,t.data.length).replace(/\0.*$/,""))},PRIV:function(t){var e;for(e=0;e<t.data.length;e++)if(0===t.data[e]){t.owner=U(t.data,0,e);break}t.privateData=t.data.subarray(e+1),t.data=t.privateData}},x={parseId3Frames:function(t){var e,i=10,s=0,a=[];if(!(t.length<10||t[0]!=="I".charCodeAt(0)||t[1]!=="D".charCodeAt(0)||t[2]!=="3".charCodeAt(0))){s=R(t.subarray(6,10)),s+=10,64&t[5]&&(i+=4,i+=R(t.subarray(10,14)),s-=R(t.subarray(16,20)));do{if((e=R(t.subarray(i+4,i+8)))<1)break;var n={id:String.fromCharCode(t[i],t[i+1],t[i+2],t[i+3]),data:t.subarray(i+10,i+e+10)};n.key=n.id,M[n.id]?M[n.id](n):"T"===n.id[0]?M["T*"](n):"W"===n.id[0]&&M["W*"](n),a.push(n),i+=10,i+=e}while(i<s);return a}},parseSyncSafeInteger:R,frameParsers:M};(S=function(t){var e,i={descriptor:t&&t.descriptor},s=0,a=[],n=0;if(S.prototype.init.call(this),this.dispatchType=b.METADATA_STREAM_TYPE.toString(16),i.descriptor)for(e=0;e<i.descriptor.length;e++)this.dispatchType+=("00"+i.descriptor[e].toString(16)).slice(-2);this.push=function(t){var e,i,r,o,h;if("timed-metadata"===t.type)if(t.dataAlignmentIndicator&&(n=0,a.length=0),0===a.length&&(t.data.length<10||t.data[0]!=="I".charCodeAt(0)||t.data[1]!=="D".charCodeAt(0)||t.data[2]!=="3".charCodeAt(0)))this.trigger("log",{level:"warn",message:"Skipping unrecognized metadata packet"});else if(a.push(t),n+=t.data.byteLength,1===a.length&&(s=x.parseSyncSafeInteger(t.data.subarray(6,10)),s+=10),!(n<s)){for(e={data:new Uint8Array(s),frames:[],pts:a[0].pts,dts:a[0].dts},h=0;h<s;)e.data.set(a[0].data.subarray(0,s-h),h),h+=a[0].data.byteLength,n-=a[0].data.byteLength,a.shift();i=10,64&e.data[5]&&(i+=4,i+=x.parseSyncSafeInteger(e.data.subarray(10,14)),s-=x.parseSyncSafeInteger(e.data.subarray(16,20)));do{if((r=x.parseSyncSafeInteger(e.data.subarray(i+4,i+8)))<1){this.trigger("log",{level:"warn",message:"Malformed ID3 frame encountered. Skipping remaining metadata parsing."});break}if((o={id:String.fromCharCode(e.data[i],e.data[i+1],e.data[i+2],e.data[i+3]),data:e.data.subarray(i+10,i+r+10)}).key=o.id,x.frameParsers[o.id]?x.frameParsers[o.id](o):"T"===o.id[0]?x.frameParsers["T*"](o):"W"===o.id[0]&&x.frameParsers["W*"](o),"com.apple.streaming.transportStreamTimestamp"===o.owner){var p=o.data,d=(1&p[3])<<30|p[4]<<22|p[5]<<14|p[6]<<6|p[7]>>>2;d*=4,d+=3&p[7],o.timeStamp=d,void 0===e.pts&&void 0===e.dts&&(e.pts=o.timeStamp,e.dts=o.timeStamp),this.trigger("timestamp",o)}e.frames.push(o),i+=10,i+=r}while(i<s);this.trigger("data",e)}}}).prototype=new s;var O,I,L,B=S,G=A,N=188;(O=function(){var t=new Uint8Array(N),e=0;O.prototype.init.call(this),this.push=function(i){var s,a=0,n=N;for(e?((s=new Uint8Array(i.byteLength+e)).set(t.subarray(0,e)),s.set(i,e),e=0):s=i;n<s.byteLength;)71!==s[a]||71!==s[n]?(a++,n++):(this.trigger("data",s.subarray(a,n)),a+=N,n+=N);a<s.byteLength&&(t.set(s.subarray(a),0),e=s.byteLength-a)},this.flush=function(){e===N&&71===t[0]&&(this.trigger("data",t),e=0),this.trigger("done")},this.endTimeline=function(){this.flush(),this.trigger("endedtimeline")},this.reset=function(){e=0,this.trigger("reset")}}).prototype=new s,(I=function(){var t,e,i,s;I.prototype.init.call(this),s=this,this.packetsWaitingForPmt=[],this.programMapTable=void 0,t=function(t,s){var a=0;s.payloadUnitStartIndicator&&(a+=t[a]+1),"pat"===s.type?e(t.subarray(a),s):i(t.subarray(a),s)},e=function(t,e){e.section_number=t[7],e.last_section_number=t[8],s.pmtPid=(31&t[10])<<8|t[11],e.pmtPid=s.pmtPid},i=function(t,e){var i,a;if(1&t[5]){for(s.programMapTable={video:null,audio:null,"timed-metadata":{}},i=3+((15&t[1])<<8|t[2])-4,a=12+((15&t[10])<<8|t[11]);a<i;){var n=t[a],r=(31&t[a+1])<<8|t[a+2];n===b.H264_STREAM_TYPE&&null===s.programMapTable.video?s.programMapTable.video=r:n===b.ADTS_STREAM_TYPE&&null===s.programMapTable.audio?s.programMapTable.audio=r:n===b.METADATA_STREAM_TYPE&&(s.programMapTable["timed-metadata"][r]=n),a+=5+((15&t[a+3])<<8|t[a+4])}e.programMapTable=s.programMapTable}},this.push=function(e){var i={},s=4;if(i.payloadUnitStartIndicator=!!(64&e[1]),i.pid=31&e[1],i.pid<<=8,i.pid|=e[2],(48&e[3])>>>4>1&&(s+=e[s]+1),0===i.pid)i.type="pat",t(e.subarray(s),i),this.trigger("data",i);else if(i.pid===this.pmtPid)for(i.type="pmt",t(e.subarray(s),i),this.trigger("data",i);this.packetsWaitingForPmt.length;)this.processPes_.apply(this,this.packetsWaitingForPmt.shift());else void 0===this.programMapTable?this.packetsWaitingForPmt.push([e,s,i]):this.processPes_(e,s,i)},this.processPes_=function(t,e,i){i.pid===this.programMapTable.video?i.streamType=b.H264_STREAM_TYPE:i.pid===this.programMapTable.audio?i.streamType=b.ADTS_STREAM_TYPE:i.streamType=this.programMapTable["timed-metadata"][i.pid],i.type="pes",i.data=t.subarray(e),this.trigger("data",i)}}).prototype=new s,I.STREAM_TYPES={h264:27,adts:15},(L=function(){var t,e=this,i=!1,s={data:[],size:0},a={data:[],size:0},n={data:[],size:0},r=function(t,i,s){var a,n,r=new Uint8Array(t.size),o={type:i},h=0,p=0;if(t.data.length&&!(t.size<9)){for(o.trackId=t.data[0].pid,h=0;h<t.data.length;h++)n=t.data[h],r.set(n.data,p),p+=n.data.byteLength;var d,l,c,u;l=o,u=(d=r)[0]<<16|d[1]<<8|d[2],l.data=new Uint8Array,1===u&&(l.packetLength=6+(d[4]<<8|d[5]),l.dataAlignmentIndicator=0!=(4&d[6]),192&(c=d[7])&&(l.pts=(14&d[9])<<27|(255&d[10])<<20|(254&d[11])<<12|(255&d[12])<<5|(254&d[13])>>>3,l.pts*=4,l.pts+=(6&d[13])>>>1,l.dts=l.pts,64&c&&(l.dts=(14&d[14])<<27|(255&d[15])<<20|(254&d[16])<<12|(255&d[17])<<5|(254&d[18])>>>3,l.dts*=4,l.dts+=(6&d[18])>>>1)),l.data=d.subarray(9+d[8])),a="video"===i||o.packetLength<=t.size,(s||a)&&(t.size=0,t.data.length=0),a&&e.trigger("data",o)}};L.prototype.init.call(this),this.push=function(o){({pat:function(){},pes:function(){var t,e;switch(o.streamType){case b.H264_STREAM_TYPE:t=s,e="video";break;case b.ADTS_STREAM_TYPE:t=a,e="audio";break;case b.METADATA_STREAM_TYPE:t=n,e="timed-metadata";break;default:return}o.payloadUnitStartIndicator&&r(t,e,!0),t.data.push(o),t.size+=o.data.byteLength},pmt:function(){var s={type:"metadata",tracks:[]};null!==(t=o.programMapTable).video&&s.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+t.video,codec:"avc",type:"video"}),null!==t.audio&&s.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+t.audio,codec:"adts",type:"audio"}),i=!0,e.trigger("data",s)}})[o.type]()},this.reset=function(){s.size=0,s.data.length=0,a.size=0,a.data.length=0,this.trigger("reset")},this.flushStreams_=function(){r(s,"video"),r(a,"audio"),r(n,"timed-metadata")},this.flush=function(){if(!i&&t){var s={type:"metadata",tracks:[]};null!==t.video&&s.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+t.video,codec:"avc",type:"video"}),null!==t.audio&&s.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+t.audio,codec:"adts",type:"audio"}),e.trigger("data",s)}i=!1,this.flushStreams_(),this.trigger("done")}}).prototype=new s;var W={PAT_PID:0,MP2T_PACKET_LENGTH:N,TransportPacketStream:O,TransportParseStream:I,ElementaryStream:L,TimestampRolloverStream:G,CaptionStream:w.CaptionStream,Cea608Stream:w.Cea608Stream,Cea708Stream:w.Cea708Stream,MetadataStream:B};for(var F in b)b.hasOwnProperty(F)&&(W[F]=b[F]);var z,V,Y,X,j=W,q=9e4;z=function(t){return t*q},V=function(t,e){return t*e},Y=function(t){return t/q},X=function(t,e){return t/e};var H,K=q,Z=[96e3,88200,64e3,48e3,44100,32e3,24e3,22050,16e3,12e3,11025,8e3,7350];(H=function(t){var e,i=0;H.prototype.init.call(this),this.skipWarn_=function(t,e){this.trigger("log",{level:"warn",message:"adts skiping bytes "+t+" to "+e+" in frame "+i+" outside syncword"})},this.push=function(s){var a,n,r,o,h,p=0;if(t||(i=0),"audio"===s.type){var d;for(e&&e.length?(r=e,(e=new Uint8Array(r.byteLength+s.data.byteLength)).set(r),e.set(s.data,r.byteLength)):e=s.data;p+7<e.length;)if(255===e[p]&&240==(246&e[p+1])){if("number"==typeof d&&(this.skipWarn_(d,p),d=null),n=2*(1&~e[p+1]),a=(3&e[p+3])<<11|e[p+4]<<3|(224&e[p+5])>>5,h=(o=1024*(1+(3&e[p+6])))*K/Z[(60&e[p+2])>>>2],e.byteLength-p<a)break;this.trigger("data",{pts:s.pts+i*h,dts:s.dts+i*h,sampleCount:o,audioobjecttype:1+(e[p+2]>>>6&3),channelcount:(1&e[p+2])<<2|(192&e[p+3])>>>6,samplerate:Z[(60&e[p+2])>>>2],samplingfrequencyindex:(60&e[p+2])>>>2,samplesize:16,data:e.subarray(p+7+n,p+a)}),i++,p+=a}else"number"!=typeof d&&(d=p),p++;"number"==typeof d&&(this.skipWarn_(d,p),d=null),e=e.subarray(p)}},this.flush=function(){i=0,this.trigger("done")},this.reset=function(){e=void 0,this.trigger("reset")},this.endTimeline=function(){e=void 0,this.trigger("endedtimeline")}}).prototype=new s;var $,J,Q,tt=H,et=function(t){var e=t.byteLength,i=0,s=0;this.length=function(){return 8*e},this.bitsAvailable=function(){return 8*e+s},this.loadWord=function(){var a=t.byteLength-e,n=new Uint8Array(4),r=Math.min(4,e);if(0===r)throw new Error("no bytes available");n.set(t.subarray(a,a+r)),i=new DataView(n.buffer).getUint32(0),s=8*r,e-=r},this.skipBits=function(t){var a;s>t?(i<<=t,s-=t):(t-=s,t-=8*(a=Math.floor(t/8)),e-=a,this.loadWord(),i<<=t,s-=t)},this.readBits=function(t){var a=Math.min(s,t),n=i>>>32-a;return(s-=a)>0?i<<=a:e>0&&this.loadWord(),(a=t-a)>0?n<<a|this.readBits(a):n},this.skipLeadingZeros=function(){var t;for(t=0;t<s;++t)if(0!=(i&2147483648>>>t))return i<<=t,s-=t,t;return this.loadWord(),t+this.skipLeadingZeros()},this.skipUnsignedExpGolomb=function(){this.skipBits(1+this.skipLeadingZeros())},this.skipExpGolomb=function(){this.skipBits(1+this.skipLeadingZeros())},this.readUnsignedExpGolomb=function(){var t=this.skipLeadingZeros();return this.readBits(t+1)-1},this.readExpGolomb=function(){var t=this.readUnsignedExpGolomb();return 1&t?1+t>>>1:-1*(t>>>1)},this.readBoolean=function(){return 1===this.readBits(1)},this.readUnsignedByte=function(){return this.readBits(8)},this.loadWord()};(J=function(){var t,e,i=0;J.prototype.init.call(this),this.push=function(s){var a;e?((a=new Uint8Array(e.byteLength+s.data.byteLength)).set(e),a.set(s.data,e.byteLength),e=a):e=s.data;for(var n=e.byteLength;i<n-3;i++)if(1===e[i+2]){t=i+5;break}for(;t<n;)switch(e[t]){case 0:if(0!==e[t-1]){t+=2;break}if(0!==e[t-2]){t++;break}i+3!==t-2&&this.trigger("data",e.subarray(i+3,t-2));do{t++}while(1!==e[t]&&t<n);i=t-2,t+=3;break;case 1:if(0!==e[t-1]||0!==e[t-2]){t+=3;break}this.trigger("data",e.subarray(i+3,t-2)),i=t-2,t+=3;break;default:t+=3}e=e.subarray(i),t-=i,i=0},this.reset=function(){e=null,i=0,this.trigger("reset")},this.flush=function(){e&&e.byteLength>3&&this.trigger("data",e.subarray(i+3)),e=null,i=0,this.trigger("done")},this.endTimeline=function(){this.flush(),this.trigger("endedtimeline")}}).prototype=new s,Q={100:!0,110:!0,122:!0,244:!0,44:!0,83:!0,86:!0,118:!0,128:!0,138:!0,139:!0,134:!0},($=function(){var t,e,i,s,a,n,r,o=new J;$.prototype.init.call(this),t=this,this.push=function(t){"video"===t.type&&(e=t.trackId,i=t.pts,s=t.dts,o.push(t))},o.on("data",(function(r){var o={trackId:e,pts:i,dts:s,data:r,nalUnitTypeCode:31&r[0]};switch(o.nalUnitTypeCode){case 5:o.nalUnitType="slice_layer_without_partitioning_rbsp_idr";break;case 6:o.nalUnitType="sei_rbsp",o.escapedRBSP=a(r.subarray(1));break;case 7:o.nalUnitType="seq_parameter_set_rbsp",o.escapedRBSP=a(r.subarray(1)),o.config=n(o.escapedRBSP);break;case 8:o.nalUnitType="pic_parameter_set_rbsp";break;case 9:o.nalUnitType="access_unit_delimiter_rbsp"}t.trigger("data",o)})),o.on("done",(function(){t.trigger("done")})),o.on("partialdone",(function(){t.trigger("partialdone")})),o.on("reset",(function(){t.trigger("reset")})),o.on("endedtimeline",(function(){t.trigger("endedtimeline")})),this.flush=function(){o.flush()},this.partialFlush=function(){o.partialFlush()},this.reset=function(){o.reset()},this.endTimeline=function(){o.endTimeline()},r=function(t,e){var i,s=8,a=8;for(i=0;i<t;i++)0!==a&&(a=(s+e.readExpGolomb()+256)%256),s=0===a?s:a},a=function(t){for(var e,i,s=t.byteLength,a=[],n=1;n<s-2;)0===t[n]&&0===t[n+1]&&3===t[n+2]?(a.push(n+2),n+=2):n++;if(0===a.length)return t;e=s-a.length,i=new Uint8Array(e);var r=0;for(n=0;n<e;r++,n++)r===a[0]&&(r++,a.shift()),i[n]=t[r];return i},n=function(t){var e,i,s,a,n,o,h,p,d,l,c,u,f=0,g=0,y=0,m=0,_=[1,1];if(i=(e=new et(t)).readUnsignedByte(),a=e.readUnsignedByte(),s=e.readUnsignedByte(),e.skipUnsignedExpGolomb(),Q[i]&&(3===(n=e.readUnsignedExpGolomb())&&e.skipBits(1),e.skipUnsignedExpGolomb(),e.skipUnsignedExpGolomb(),e.skipBits(1),e.readBoolean()))for(c=3!==n?8:12,u=0;u<c;u++)e.readBoolean()&&r(u<6?16:64,e);if(e.skipUnsignedExpGolomb(),0===(o=e.readUnsignedExpGolomb()))e.readUnsignedExpGolomb();else if(1===o)for(e.skipBits(1),e.skipExpGolomb(),e.skipExpGolomb(),h=e.readUnsignedExpGolomb(),u=0;u<h;u++)e.skipExpGolomb();if(e.skipUnsignedExpGolomb(),e.skipBits(1),p=e.readUnsignedExpGolomb(),d=e.readUnsignedExpGolomb(),0===(l=e.readBits(1))&&e.skipBits(1),e.skipBits(1),e.readBoolean()&&(f=e.readUnsignedExpGolomb(),g=e.readUnsignedExpGolomb(),y=e.readUnsignedExpGolomb(),m=e.readUnsignedExpGolomb()),e.readBoolean()&&e.readBoolean()){switch(e.readUnsignedByte()){case 1:_=[1,1];break;case 2:_=[12,11];break;case 3:_=[10,11];break;case 4:_=[16,11];break;case 5:_=[40,33];break;case 6:_=[24,11];break;case 7:_=[20,11];break;case 8:_=[32,11];break;case 9:_=[80,33];break;case 10:_=[18,11];break;case 11:_=[15,11];break;case 12:_=[64,33];break;case 13:_=[160,99];break;case 14:_=[4,3];break;case 15:_=[3,2];break;case 16:_=[2,1];break;case 255:_=[e.readUnsignedByte()<<8|e.readUnsignedByte(),e.readUnsignedByte()<<8|e.readUnsignedByte()]}_&&(_[0],_[1])}return{profileIdc:i,levelIdc:s,profileCompatibility:a,width:16*(p+1)-2*f-2*g,height:(2-l)*(d+1)*16-2*y-2*m,sarRatio:_}}}).prototype=new s;var it={H264Stream:$,NalByteStream:J},st=function t(e){this.numberOfTracks=0,this.metadataStream=e.metadataStream,this.videoTags=[],this.audioTags=[],this.videoTrack=null,this.audioTrack=null,this.pendingCaptions=[],this.pendingMetadata=[],this.pendingTracks=0,this.processedTracks=0,t.prototype.init.call(this),this.push=function(t){return t.text?this.pendingCaptions.push(t):t.frames?this.pendingMetadata.push(t):("video"===t.track.type&&(this.videoTrack=t.track,this.videoTags=t.tags,this.pendingTracks++),void("audio"===t.track.type&&(this.audioTrack=t.track,this.audioTags=t.tags,this.pendingTracks++)))}};(st.prototype=new s).flush=function(t){var e,i,s,a,n={tags:{},captions:[],captionStreams:{},metadata:[]};if(this.pendingTracks<this.numberOfTracks){if("VideoSegmentStream"!==t&&"AudioSegmentStream"!==t)return;if(0===this.pendingTracks&&(this.processedTracks++,this.processedTracks<this.numberOfTracks))return}if(this.processedTracks+=this.pendingTracks,this.pendingTracks=0,!(this.processedTracks<this.numberOfTracks)){for(this.videoTrack?a=this.videoTrack.timelineStartInfo.pts:this.audioTrack&&(a=this.audioTrack.timelineStartInfo.pts),n.tags.videoTags=this.videoTags,n.tags.audioTags=this.audioTags,s=0;s<this.pendingCaptions.length;s++)(i=this.pendingCaptions[s]).startTime=i.startPts-a,i.startTime/=9e4,i.endTime=i.endPts-a,i.endTime/=9e4,n.captionStreams[i.stream]=!0,n.captions.push(i);for(s=0;s<this.pendingMetadata.length;s++)(e=this.pendingMetadata[s]).cueTime=e.pts-a,e.cueTime/=9e4,n.metadata.push(e);n.metadata.dispatchType=this.metadataStream.dispatchType,this.videoTrack=null,this.audioTrack=null,this.videoTags=[],this.audioTags=[],this.pendingCaptions.length=0,this.pendingMetadata.length=0,this.pendingTracks=0,this.processedTracks=0,this.trigger("data",n),this.trigger("done")}};var at,nt,rt,ot,ht,pt,dt=st,lt=function(){var t=this;this.list=[],this.push=function(t){this.list.push({bytes:t.bytes,dts:t.dts,pts:t.pts,keyFrame:t.keyFrame,metaDataTag:t.metaDataTag})},Object.defineProperty(this,"length",{get:function(){return t.list.length}})},ct=it.H264Stream;ot=function(t,e){"number"==typeof e.pts&&(void 0===t.timelineStartInfo.pts?t.timelineStartInfo.pts=e.pts:t.timelineStartInfo.pts=Math.min(t.timelineStartInfo.pts,e.pts)),"number"==typeof e.dts&&(void 0===t.timelineStartInfo.dts?t.timelineStartInfo.dts=e.dts:t.timelineStartInfo.dts=Math.min(t.timelineStartInfo.dts,e.dts))},ht=function(t,i){var s=new e(e.METADATA_TAG);return s.dts=i,s.pts=i,s.writeMetaDataDouble("videocodecid",7),s.writeMetaDataDouble("width",t.width),s.writeMetaDataDouble("height",t.height),s},pt=function(t,i){var s,a=new e(e.VIDEO_TAG,!0);for(a.dts=i,a.pts=i,a.writeByte(1),a.writeByte(t.profileIdc),a.writeByte(t.profileCompatibility),a.writeByte(t.levelIdc),a.writeByte(255),a.writeByte(225),a.writeShort(t.sps[0].length),a.writeBytes(t.sps[0]),a.writeByte(t.pps.length),s=0;s<t.pps.length;++s)a.writeShort(t.pps[s].length),a.writeBytes(t.pps[s]);return a},(rt=function(t){var i,s=[],a=[];rt.prototype.init.call(this),this.push=function(e){ot(t,e),t&&(t.audioobjecttype=e.audioobjecttype,t.channelcount=e.channelcount,t.samplerate=e.samplerate,t.samplingfrequencyindex=e.samplingfrequencyindex,t.samplesize=e.samplesize,t.extraData=t.audioobjecttype<<11|t.samplingfrequencyindex<<7|t.channelcount<<3),e.pts=Math.round(e.pts/90),e.dts=Math.round(e.dts/90),s.push(e)},this.flush=function(){var n,r,o,h=new lt;if(0!==s.length){for(o=-1/0;s.length;)n=s.shift(),a.length&&n.pts>=a[0]&&(o=a.shift(),this.writeMetaDataTags(h,o)),(t.extraData!==i||n.pts-o>=1e3)&&(this.writeMetaDataTags(h,n.pts),i=t.extraData,o=n.pts),(r=new e(e.AUDIO_TAG)).pts=n.pts,r.dts=n.dts,r.writeBytes(n.data),h.push(r.finalize());a.length=0,i=null,this.trigger("data",{track:t,tags:h.list}),this.trigger("done","AudioSegmentStream")}else this.trigger("done","AudioSegmentStream")},this.writeMetaDataTags=function(i,s){var a;(a=new e(e.METADATA_TAG)).pts=s,a.dts=s,a.writeMetaDataDouble("audiocodecid",10),a.writeMetaDataBoolean("stereo",2===t.channelcount),a.writeMetaDataDouble("audiosamplerate",t.samplerate),a.writeMetaDataDouble("audiosamplesize",16),i.push(a.finalize()),(a=new e(e.AUDIO_TAG,!0)).pts=s,a.dts=s,a.view.setUint16(a.position,t.extraData),a.position+=2,a.length=Math.max(a.length,a.position),i.push(a.finalize())},this.onVideoKeyFrame=function(t){a.push(t)}}).prototype=new s,(nt=function(t){var i,s,a=[];nt.prototype.init.call(this),this.finishFrame=function(e,a){if(a){if(i&&t&&t.newMetadata&&(a.keyFrame||0===e.length)){var n=ht(i,a.dts).finalize(),r=pt(t,a.dts).finalize();n.metaDataTag=r.metaDataTag=!0,e.push(n),e.push(r),t.newMetadata=!1,this.trigger("keyframe",a.dts)}a.endNalUnit(),e.push(a.finalize()),s=null}},this.push=function(e){ot(t,e),e.pts=Math.round(e.pts/90),e.dts=Math.round(e.dts/90),a.push(e)},this.flush=function(){for(var n,r=new lt;a.length&&"access_unit_delimiter_rbsp"!==a[0].nalUnitType;)a.shift();if(0!==a.length){for(;a.length;)"seq_parameter_set_rbsp"===(n=a.shift()).nalUnitType?(t.newMetadata=!0,i=n.config,t.width=i.width,t.height=i.height,t.sps=[n.data],t.profileIdc=i.profileIdc,t.levelIdc=i.levelIdc,t.profileCompatibility=i.profileCompatibility,s.endNalUnit()):"pic_parameter_set_rbsp"===n.nalUnitType?(t.newMetadata=!0,t.pps=[n.data],s.endNalUnit()):"access_unit_delimiter_rbsp"===n.nalUnitType?(s&&this.finishFrame(r,s),(s=new e(e.VIDEO_TAG)).pts=n.pts,s.dts=n.dts):("slice_layer_without_partitioning_rbsp_idr"===n.nalUnitType&&(s.keyFrame=!0),s.endNalUnit()),s.startNalUnit(),s.writeBytes(n.data);s&&this.finishFrame(r,s),this.trigger("data",{track:t,tags:r.list}),this.trigger("done","VideoSegmentStream")}else this.trigger("done","VideoSegmentStream")}}).prototype=new s,(at=function(t){var e,i,s,a,n,r,o,h,p,d,l,c,u=this;at.prototype.init.call(this),t=t||{},this.metadataStream=new j.MetadataStream,t.metadataStream=this.metadataStream,e=new j.TransportPacketStream,i=new j.TransportParseStream,s=new j.ElementaryStream,a=new j.TimestampRolloverStream("video"),n=new j.TimestampRolloverStream("audio"),r=new j.TimestampRolloverStream("timed-metadata"),o=new tt,h=new ct,c=new dt(t),e.pipe(i).pipe(s),s.pipe(a).pipe(h),s.pipe(n).pipe(o),s.pipe(r).pipe(this.metadataStream).pipe(c),l=new j.CaptionStream(t),h.pipe(l).pipe(c),s.on("data",(function(t){var e,i,s;if("metadata"===t.type){for(e=t.tracks.length;e--;)"video"===t.tracks[e].type?i=t.tracks[e]:"audio"===t.tracks[e].type&&(s=t.tracks[e]);i&&!p&&(c.numberOfTracks++,p=new nt(i),h.pipe(p).pipe(c)),s&&!d&&(c.numberOfTracks++,d=new rt(s),o.pipe(d).pipe(c),p&&p.on("keyframe",d.onVideoKeyFrame))}})),this.push=function(t){e.push(t)},this.flush=function(){e.flush()},this.resetCaptions=function(){l.reset()},c.on("data",(function(t){u.trigger("data",t)})),c.on("done",(function(){u.trigger("done")}))}).prototype=new s;var ut=function(t,i,s){var a,n,r,o=new Uint8Array(9),h=new DataView(o.buffer);return t=t||0,i=void 0===i||i,s=void 0===s||s,h.setUint8(0,70),h.setUint8(1,76),h.setUint8(2,86),h.setUint8(3,1),h.setUint8(4,(i?4:0)|(s?1:0)),h.setUint32(5,o.byteLength),t<=0?((n=new Uint8Array(o.byteLength+4)).set(o),n.set([0,0,0,0],o.byteLength),n):((a=new e(e.METADATA_TAG)).pts=a.dts=0,a.writeMetaDataDouble("duration",t),r=a.finalize().length,(n=new Uint8Array(o.byteLength+r)).set(o),n.set(h.byteLength,r),n)};return{tag:e,Transmuxer:at,getFlvHeader:ut}}));

175

es/m2ts/metadata-stream.js

@@ -15,160 +15,3 @@ /**

StreamTypes = require('./stream-types'),
typedArrayIndexOf = require('../utils/typed-array').typedArrayIndexOf,
// Frames that allow different types of text encoding contain a text
// encoding description byte [ID3v2.4.0 section 4.]
textEncodingDescriptionByte = {
Iso88591: 0x00,
// ISO-8859-1, terminated with \0.
Utf16: 0x01,
// UTF-16 encoded Unicode BOM, terminated with \0\0
Utf16be: 0x02,
// UTF-16BE encoded Unicode, without BOM, terminated with \0\0
Utf8: 0x03 // UTF-8 encoded Unicode, terminated with \0
},
// return a percent-encoded representation of the specified byte range
// @see http://en.wikipedia.org/wiki/Percent-encoding
percentEncode = function percentEncode(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 parseUtf8(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 parseIso88591(bytes, start, end) {
return unescape(percentEncode(bytes, start, end)); // jshint ignore:line
},
parseSyncSafeInteger = function parseSyncSafeInteger(data) {
return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];
},
frameParsers = {
'APIC': function APIC(frame) {
var i = 1,
mimeTypeEndIndex,
descriptionEndIndex,
LINK_MIME_TYPE = '-->';
if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
// ignore frames with unrecognized character encodings
return;
} // parsing fields [ID3v2.4.0 section 4.14.]
mimeTypeEndIndex = typedArrayIndexOf(frame.data, 0, i);
if (mimeTypeEndIndex < 0) {
// malformed frame
return;
} // parsing Mime type field (terminated with \0)
frame.mimeType = parseIso88591(frame.data, i, mimeTypeEndIndex);
i = mimeTypeEndIndex + 1; // parsing 1-byte Picture Type field
frame.pictureType = frame.data[i];
i++;
descriptionEndIndex = typedArrayIndexOf(frame.data, 0, i);
if (descriptionEndIndex < 0) {
// malformed frame
return;
} // parsing Description field (terminated with \0)
frame.description = parseUtf8(frame.data, i, descriptionEndIndex);
i = descriptionEndIndex + 1;
if (frame.mimeType === LINK_MIME_TYPE) {
// parsing Picture Data field as URL (always represented as ISO-8859-1 [ID3v2.4.0 section 4.])
frame.url = parseIso88591(frame.data, i, frame.data.length);
} else {
// parsing Picture Data field as binary data
frame.pictureData = frame.data.subarray(i, frame.data.length);
}
},
'T*': function T(frame) {
if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
// ignore frames with unrecognized character encodings
return;
} // parse text field, do not include null terminator in the frame value
// frames that allow different types of encoding contain terminated text [ID3v2.4.0 section 4.]
frame.value = parseUtf8(frame.data, 1, frame.data.length).replace(/\0*$/, ''); // text information frames supports multiple strings, stored as a terminator separated list [ID3v2.4.0 section 4.2.]
frame.values = frame.value.split('\0');
},
'TXXX': function TXXX(frame) {
var descriptionEndIndex;
if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
// ignore frames with unrecognized character encodings
return;
}
descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);
if (descriptionEndIndex === -1) {
return;
} // parse the text fields
frame.description = parseUtf8(frame.data, 1, descriptionEndIndex); // do not include the null terminator in the tag value
// frames that allow different types of encoding contain terminated text
// [ID3v2.4.0 section 4.]
frame.value = parseUtf8(frame.data, descriptionEndIndex + 1, frame.data.length).replace(/\0*$/, '');
frame.data = frame.value;
},
'W*': function W(frame) {
// parse URL field; URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]
// if the value is followed by a string termination all the following information should be ignored [ID3v2.4.0 section 4.3]
frame.url = parseIso88591(frame.data, 0, frame.data.length).replace(/\0.*$/, '');
},
'WXXX': function WXXX(frame) {
var descriptionEndIndex;
if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
// ignore frames with unrecognized character encodings
return;
}
descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);
if (descriptionEndIndex === -1) {
return;
} // parse the description and URL fields
frame.description = parseUtf8(frame.data, 1, descriptionEndIndex); // URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]
// if the value is followed by a string termination all the following information
// should be ignored [ID3v2.4.0 section 4.3]
frame.url = parseIso88591(frame.data, descriptionEndIndex + 1, frame.data.length).replace(/\0.*$/, '');
},
'PRIV': function PRIV(frame) {
var i;
for (i = 0; i < frame.data.length; i++) {
if (frame.data[i] === 0) {
// parse the description and URL fields
frame.owner = parseIso88591(frame.data, 0, i);
break;
}
}
frame.privateData = frame.data.subarray(i + 1);
frame.data = frame.privateData;
}
},
id3 = require('../tools/parse-id3'),
_MetadataStream;

@@ -236,3 +79,3 @@

// 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
tagSize = id3.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

@@ -270,5 +113,5 @@

frameStart += parseSyncSafeInteger(tag.data.subarray(10, 14)); // clip any padding off the end
frameStart += id3.parseSyncSafeInteger(tag.data.subarray(10, 14)); // clip any padding off the end
tagSize -= parseSyncSafeInteger(tag.data.subarray(16, 20));
tagSize -= id3.parseSyncSafeInteger(tag.data.subarray(16, 20));
} // parse one or more ID3 frames

@@ -280,3 +123,3 @@ // http://id3.org/id3v2.3.0#ID3v2_frame_overview

// determine the number of bytes in this frame
frameSize = parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8));
frameSize = id3.parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8));

@@ -300,11 +143,11 @@ if (frameSize < 1) {

if (frameParsers[frame.id]) {
if (id3.frameParsers[frame.id]) {
// use frame specific parser
frameParsers[frame.id](frame);
id3.frameParsers[frame.id](frame);
} else if (frame.id[0] === 'T') {
// use text frame generic parser
frameParsers['T*'](frame);
id3.frameParsers['T*'](frame);
} else if (frame.id[0] === 'W') {
// use URL link frame generic parser
frameParsers['W*'](frame);
id3.frameParsers['W*'](frame);
} // handle the special PRIV frame used to indicate the start

@@ -311,0 +154,0 @@ // time for raw AAC data

37

es/mp4/probe.js

@@ -19,2 +19,4 @@ /**

var emsg = require('../mp4/emsg.js');
var parseTfhd = require('../tools/parse-tfhd.js');

@@ -28,5 +30,7 @@

var timescale, startTime, compositionStartTime, getVideoTrackIds, getTracks, getTimescaleFromMediaHeader;
var timescale, startTime, compositionStartTime, getVideoTrackIds, getTracks, getTimescaleFromMediaHeader, getEmsgID3;
var window = require('global/window');
var parseId3Frames = require('../tools/parse-id3.js').parseId3Frames;
/**

@@ -351,3 +355,31 @@ * Parses an MP4 initialization segment and extracts the timescale

};
/**
* Returns an array of emsg ID3 data from the provided segmentData.
* An offset can also be provided as the Latest Arrival Time to calculate
* the Event Start Time of v0 EMSG boxes.
* See: https://dashif-documents.azurewebsites.net/Events/master/event.html#Inband-event-timing
*
* @param {Uint8Array} segmentData the segment byte array.
* @param {number} offset the segment start time or Latest Arrival Time,
* @return {Object[]} an array of ID3 parsed from EMSG boxes
*/
getEmsgID3 = function getEmsgID3(segmentData, offset) {
if (offset === void 0) {
offset = 0;
}
var emsgBoxes = findBox(segmentData, ['emsg']);
return emsgBoxes.map(function (data) {
var parsedBox = emsg.parseEmsgBox(new Uint8Array(data));
var parsedId3Frames = parseId3Frames(parsedBox.message_data);
return {
cueTime: emsg.scaleTime(parsedBox.presentation_time, parsedBox.timescale, parsedBox.presentation_time_delta, offset),
duration: emsg.scaleTime(parsedBox.event_duration, parsedBox.timescale),
frames: parsedId3Frames
};
});
};
module.exports = {

@@ -362,3 +394,4 @@ // export mp4 inspector's findBox and parseType for backwards compatibility

tracks: getTracks,
getTimescaleFromMediaHeader: getTimescaleFromMediaHeader
getTimescaleFromMediaHeader: getTimescaleFromMediaHeader,
getEmsgID3: getEmsgID3
};

179

lib/m2ts/metadata-stream.js

@@ -15,164 +15,3 @@ /**

StreamTypes = require('./stream-types'),
typedArrayIndexOf = require('../utils/typed-array').typedArrayIndexOf,
// Frames that allow different types of text encoding contain a text
// encoding description byte [ID3v2.4.0 section 4.]
textEncodingDescriptionByte = {
Iso88591: 0x00, // ISO-8859-1, terminated with \0.
Utf16: 0x01, // UTF-16 encoded Unicode BOM, terminated with \0\0
Utf16be: 0x02, // UTF-16BE encoded Unicode, without BOM, terminated with \0\0
Utf8: 0x03 // UTF-8 encoded Unicode, terminated with \0
},
// 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]);
},
frameParsers = {
'APIC': function(frame) {
var
i = 1,
mimeTypeEndIndex,
descriptionEndIndex,
LINK_MIME_TYPE = '-->';
if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
// ignore frames with unrecognized character encodings
return;
}
// parsing fields [ID3v2.4.0 section 4.14.]
mimeTypeEndIndex = typedArrayIndexOf(frame.data, 0, i);
if (mimeTypeEndIndex < 0) {
// malformed frame
return;
}
// parsing Mime type field (terminated with \0)
frame.mimeType = parseIso88591(frame.data, i, mimeTypeEndIndex);
i = mimeTypeEndIndex + 1;
// parsing 1-byte Picture Type field
frame.pictureType = frame.data[i];
i++
descriptionEndIndex = typedArrayIndexOf(frame.data, 0, i);
if (descriptionEndIndex < 0) {
// malformed frame
return;
}
// parsing Description field (terminated with \0)
frame.description = parseUtf8(frame.data, i, descriptionEndIndex);
i = descriptionEndIndex + 1;
if (frame.mimeType === LINK_MIME_TYPE) {
// parsing Picture Data field as URL (always represented as ISO-8859-1 [ID3v2.4.0 section 4.])
frame.url = parseIso88591(frame.data, i, frame.data.length)
} else {
// parsing Picture Data field as binary data
frame.pictureData = frame.data.subarray(i, frame.data.length);
}
},
'T*': function(frame) {
if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
// ignore frames with unrecognized character encodings
return;
}
// parse text field, do not include null terminator in the frame value
// frames that allow different types of encoding contain terminated text [ID3v2.4.0 section 4.]
frame.value = parseUtf8(frame.data, 1, frame.data.length).replace(/\0*$/, '');
// text information frames supports multiple strings, stored as a terminator separated list [ID3v2.4.0 section 4.2.]
frame.values = frame.value.split('\0');
},
'TXXX': function(frame) {
var descriptionEndIndex;
if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
// ignore frames with unrecognized character encodings
return;
}
descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);
if (descriptionEndIndex === -1) {
return;
}
// parse the text fields
frame.description = parseUtf8(frame.data, 1, descriptionEndIndex);
// do not include the null terminator in the tag value
// frames that allow different types of encoding contain terminated text
// [ID3v2.4.0 section 4.]
frame.value = parseUtf8(
frame.data,
descriptionEndIndex + 1,
frame.data.length
).replace(/\0*$/, '');
frame.data = frame.value;
},
'W*': function(frame) {
// parse URL field; URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]
// if the value is followed by a string termination all the following information should be ignored [ID3v2.4.0 section 4.3]
frame.url = parseIso88591(frame.data, 0, frame.data.length).replace(/\0.*$/, '');
},
'WXXX': function(frame) {
var descriptionEndIndex;
if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
// ignore frames with unrecognized character encodings
return;
}
descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);
if (descriptionEndIndex === -1) {
return;
}
// parse the description and URL fields
frame.description = parseUtf8(frame.data, 1, descriptionEndIndex);
// URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]
// if the value is followed by a string termination all the following information
// should be ignored [ID3v2.4.0 section 4.3]
frame.url = parseIso88591(
frame.data,
descriptionEndIndex + 1,
frame.data.length
).replace(/\0.*$/, '');
},
'PRIV': function(frame) {
var i;
for (i = 0; i < frame.data.length; i++) {
if (frame.data[i] === 0) {
// parse the description and URL fields
frame.owner = parseIso88591(frame.data, 0, i);
break;
}
}
frame.privateData = frame.data.subarray(i + 1);
frame.data = frame.privateData;
}
},
id3 = require('../tools/parse-id3'),
MetadataStream;

@@ -245,3 +84,3 @@

// results concatenated to recover the actual value.
tagSize = parseSyncSafeInteger(chunk.data.subarray(6, 10));
tagSize = id3.parseSyncSafeInteger(chunk.data.subarray(6, 10));

@@ -277,6 +116,6 @@ // ID3 reports the tag size excluding the header but it's more

frameStart += 4; // header size field
frameStart += parseSyncSafeInteger(tag.data.subarray(10, 14));
frameStart += id3.parseSyncSafeInteger(tag.data.subarray(10, 14));
// clip any padding off the end
tagSize -= parseSyncSafeInteger(tag.data.subarray(16, 20));
tagSize -= id3.parseSyncSafeInteger(tag.data.subarray(16, 20));
}

@@ -288,3 +127,3 @@

// determine the number of bytes in this frame
frameSize = parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8));
frameSize = id3.parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8));
if (frameSize < 1) {

@@ -312,11 +151,11 @@ this.trigger('log', {

// parse frame values
if (frameParsers[frame.id]) {
if (id3.frameParsers[frame.id]) {
// use frame specific parser
frameParsers[frame.id](frame);
id3.frameParsers[frame.id](frame);
} else if (frame.id[0] === 'T') {
// use text frame generic parser
frameParsers['T*'](frame);
id3.frameParsers['T*'](frame);
} else if (frame.id[0] === 'W') {
// use URL link frame generic parser
frameParsers['W*'](frame);
id3.frameParsers['W*'](frame);
}

@@ -323,0 +162,0 @@

30

lib/mp4/probe.js

@@ -15,2 +15,3 @@ /**

var parseType = require('../mp4/parse-type.js');
var emsg = require('../mp4/emsg.js');
var parseTfhd = require('../tools/parse-tfhd.js');

@@ -21,4 +22,5 @@ var parseTrun = require('../tools/parse-trun.js');

var timescale, startTime, compositionStartTime, getVideoTrackIds, getTracks,
getTimescaleFromMediaHeader;
getTimescaleFromMediaHeader, getEmsgID3;
var window = require('global/window');
var parseId3Frames = require('../tools/parse-id3.js').parseId3Frames;

@@ -375,2 +377,25 @@

/**
* Returns an array of emsg ID3 data from the provided segmentData.
* An offset can also be provided as the Latest Arrival Time to calculate
* the Event Start Time of v0 EMSG boxes.
* See: https://dashif-documents.azurewebsites.net/Events/master/event.html#Inband-event-timing
*
* @param {Uint8Array} segmentData the segment byte array.
* @param {number} offset the segment start time or Latest Arrival Time,
* @return {Object[]} an array of ID3 parsed from EMSG boxes
*/
getEmsgID3 = function(segmentData, offset = 0) {
var emsgBoxes = findBox(segmentData, ['emsg']);
return emsgBoxes.map((data) => {
var parsedBox = emsg.parseEmsgBox(new Uint8Array(data));
var parsedId3Frames = parseId3Frames(parsedBox.message_data);
return {
cueTime: emsg.scaleTime(parsedBox.presentation_time, parsedBox.timescale, parsedBox.presentation_time_delta, offset),
duration: emsg.scaleTime(parsedBox.event_duration, parsedBox.timescale),
frames: parsedId3Frames
};
});
};
module.exports = {

@@ -385,3 +410,4 @@ // export mp4 inspector's findBox and parseType for backwards compatibility

tracks: getTracks,
getTimescaleFromMediaHeader: getTimescaleFromMediaHeader
getTimescaleFromMediaHeader: getTimescaleFromMediaHeader,
getEmsgID3: getEmsgID3,
};

2

package.json
{
"name": "mux.js",
"version": "6.2.0",
"version": "6.3.0",
"description": "A collection of lightweight utilities for inspecting and manipulating video container formats.",

@@ -5,0 +5,0 @@ "repository": {

74

test/mp4-probe.test.js

@@ -8,2 +8,3 @@ 'use strict';

box = mp4Helpers.box,
id3 = require('./utils/id3-generator'),

@@ -147,2 +148,75 @@ // defined below

QUnit.test('can get ID3 data from a v0 EMSG box', function(assert) {
var id3Data = new Uint8Array(id3.id3Tag(id3.id3Frame('PRIV',
id3.stringToCString('priv-owner@example.com'),
id3.stringToInts('foo.bar.id3.com')))
);
var v0EmsgId3Data = mp4Helpers.generateEmsgBoxData(0, id3Data);
var emsgId3Box = new Uint8Array(box('emsg', [].slice.call(v0EmsgId3Data)));
var emsgBoxes = probe.getEmsgID3(emsgId3Box, 10);
assert.equal(emsgBoxes[0].cueTime, 20, 'got correct emsg cueTime value from v0 emsg');
assert.equal(emsgBoxes[0].duration, 0, 'got correct emsg duration value from v0 emsg');
assert.equal(emsgBoxes[0].frames[0].id, 'PRIV' , 'got correct ID3 id');
assert.equal(emsgBoxes[0].frames[0].owner, 'priv-owner@example.com', 'got correct ID3 owner');
assert.deepEqual(emsgBoxes[0].frames[0].data, new Uint8Array(id3.stringToInts('foo.bar.id3.com')), 'got correct ID3 data');
});
QUnit.test('can get ID3 data from a v1 EMSG box', function(assert) {
var id3Data = new Uint8Array(id3.id3Tag(id3.id3Frame('TXXX',
0x03, // utf-8
id3.stringToCString('foo bar'),
id3.stringToCString('{ "key": "value" }')),
[0x00, 0x00])
);
var v1EmsgId3Data = mp4Helpers.generateEmsgBoxData(1, id3Data);
var emsgId3Box = new Uint8Array(box('emsg', [].slice.call(v1EmsgId3Data)));
var emsgBoxes = probe.getEmsgID3(emsgId3Box);
assert.equal(emsgBoxes[0].cueTime, 100, 'got correct emsg cueTime value from v1 emsg');
assert.equal(emsgBoxes[0].duration, 0.01, 'got correct emsg duration value from v1 emsg');
assert.equal(emsgBoxes[0].frames[0].id, 'TXXX' , 'got correct ID3 id');
assert.equal(emsgBoxes[0].frames[0].description, 'foo bar', 'got correct ID3 description');
assert.deepEqual(JSON.parse(emsgBoxes[0].frames[0].data), { key: 'value' }, 'got correct ID3 data');
});
QUnit.test('can get ID3 data from multiple EMSG boxes', function(assert) {
var v1id3Data = new Uint8Array(id3.id3Tag(id3.id3Frame('PRIV',
id3.stringToCString('priv-owner@example.com'),
id3.stringToInts('foo.bar.id3.com')))
);
var v0id3Data = new Uint8Array(id3.id3Tag(id3.id3Frame('TXXX',
0x03, // utf-8
id3.stringToCString('foo bar'),
id3.stringToCString('{ "key": "value" }')),
[0x00, 0x00])
);
var v1EmsgId3Data = mp4Helpers.generateEmsgBoxData(1, v1id3Data);
var v1emsgId3Box = new Uint8Array(box('emsg', [].slice.call(v1EmsgId3Data)));
var v0EmsgId3Data = mp4Helpers.generateEmsgBoxData(0, v0id3Data);
var v0emsgId3Box = new Uint8Array(box('emsg', [].slice.call(v0EmsgId3Data)));
var multiBoxData = new Uint8Array(v1emsgId3Box.length + v0emsgId3Box.length);
multiBoxData.set(v1emsgId3Box);
multiBoxData.set(v0emsgId3Box, v1emsgId3Box.length);
var emsgBoxes = probe.getEmsgID3(multiBoxData);
assert.equal(emsgBoxes[0].cueTime, 100, 'got correct emsg cueTime value from v1 emsg');
assert.equal(emsgBoxes[0].duration, 0.01, 'got correct emsg duration value from v1 emsg');
assert.equal(emsgBoxes[0].frames[0].id, 'PRIV' , 'got correct ID3 id');
assert.equal(emsgBoxes[0].frames[0].owner, 'priv-owner@example.com', 'got correct ID3 owner');
assert.deepEqual(emsgBoxes[0].frames[0].data, new Uint8Array(id3.stringToInts('foo.bar.id3.com')), 'got correct ID3 data');
assert.equal(emsgBoxes[1].cueTime, 10, 'got correct emsg cueTime value from v0 emsg');
assert.equal(emsgBoxes[1].duration, 0, 'got correct emsg duration value from v0 emsg');
assert.equal(emsgBoxes[1].frames[0].id, 'TXXX' , 'got correct ID3 id');
assert.equal(emsgBoxes[1].frames[0].description, 'foo bar', 'got correct ID3 description');
assert.deepEqual(JSON.parse(emsgBoxes[1].frames[0].data),{ key: 'value' }, 'got correct ID3 data');
});
// ---------

@@ -149,0 +223,0 @@ // Test Data

63

test/utils/mp4-helpers.js

@@ -314,2 +314,62 @@ /**

/**
* Generates generic emsg box data for both v0 and v1 boxes concats the messageData
* and returns the result as a Uint8Array. Passing any version other than 0 or 1 will
* return an invalid EMSG box.
*/
var generateEmsgBoxData = function(version, messageData) {
var emsgProps;
if (version === 0) {
emsgProps = new Uint8Array([
0x00, // version
0x00, 0x00, 0x00, //flags
0x75, 0x72, 0x6E, 0x3A, 0x66, 0x6F, 0x6F, 0x3A, 0x62, 0x61, 0x72, 0x3A, 0x32, 0x30, 0x32, 0x33, 0x00, // urn:foo:bar:2023\0
0x66, 0x6F, 0x6F, 0x2E, 0x62, 0x61, 0x72, 0x2E, 0x76, 0x61, 0x6C, 0x75, 0x65, 0x00, // foo.bar.value\0
0x00, 0x00, 0x00, 0x64, // timescale = 100
0x00, 0x00, 0x03, 0xE8, // presentation_time_delta = 1000
0x00, 0x00, 0x00, 0x00, // event_duration = 0
0x00, 0x00, 0x00, 0x01 // id = 1
]);
} else if (version === 1) {
emsgProps = new Uint8Array([
0x01, // version
0x00, 0x00, 0x00, //flags
0x00, 0x00, 0x00, 0x64, // timescale = 100
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x27, 0x10, // presentation_time = 10000
0x00, 0x00, 0x00, 0x01, // event_duration = 1
0x00, 0x00, 0x00, 0x02, // id = 2
0x75, 0x72, 0x6E, 0x3A, 0x66, 0x6F, 0x6F, 0x3A, 0x62, 0x61, 0x72, 0x3A, 0x32, 0x30, 0x32, 0x33, 0x00, // urn:foo:bar:2023\0
0x66, 0x6F, 0x6F, 0x2E, 0x62, 0x61, 0x72, 0x2E, 0x76, 0x61, 0x6C, 0x75, 0x65, 0x00 // foo.bar.value\0
]);
} else if (version === 2) {
// Invalid version only
emsgProps = new Uint8Array([
0x02, // version
0x00, 0x00, 0x00, //flags
0x00, 0x00, 0x00, 0x64, // timescale = 100
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x27, 0x10, // presentation_time = 10000
0x00, 0x00, 0x00, 0x01, // event_duration = 1
0x00, 0x00, 0x00, 0x02, // id = 2
0x75, 0x72, 0x6E, 0x3A, 0x66, 0x6F, 0x6F, 0x3A, 0x62, 0x61, 0x72, 0x3A, 0x32, 0x30, 0x32, 0x33, 0x00, // urn:foo:bar:2023\0
0x66, 0x6F, 0x6F, 0x2E, 0x62, 0x61, 0x72, 0x2E, 0x76, 0x61, 0x6C, 0x75, 0x65, 0x00 // foo.bar.value\0
]);
} else {
emsgProps = new Uint8Array([
// malformed emsg data
0x00, 0x00, 0x00, 0x64, // timescale = 100
// no presentation_time
0x00, 0x00, 0x00, 0x01, // event_duration = 1
// no id
0x75, 0x72, 0x6E, 0x3A, 0x66, 0x6F, 0x6F, 0x3A, 0x62, 0x61, 0x72, 0x3A, 0x32, 0x30, 0x32, 0x33, 0x00, // urn:foo:bar:2023\0
0x66, 0x6F, 0x6F, 0x2E, 0x62, 0x61, 0x72, 0x2E, 0x76, 0x61, 0x6C, 0x75, 0x65, 0x00 // foo.bar.value\0
]);
}
// concat the props and messageData
var retArr = new Uint8Array(emsgProps.length + messageData.length);
retArr.set(emsgProps);
retArr.set(messageData, emsgProps.length);
return retArr;
};
module.exports = {

@@ -319,3 +379,4 @@ typeBytes,

unityMatrix,
box
box,
generateEmsgBoxData
};
dist/mux-flv.js

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dist/mux-mp4.js

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dist/mux-mp4.min.js

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dist/mux.js

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dist/mux.min.js

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