web-backset.cn/apps/web/public/player/libs/flv.min.1.5.js

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2023-02-27 15:41:19 +08:00
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h.refSampleDuration=1024/h.audioSampleRate*h.timescale,l.default.v(this.TAG,"Parsed AudioSpecificConfig"),this._isInitialMetadataDispatched()?this._dispatch&&(this._audioTrack.length||this._videoTrack.length)&&this._onDataAvailable(this._audioTrack,this._videoTrack):this._audioInitialMetadataDispatched=!0,this._dispatch=!1,this._onTrackMetadata("audio",h);var p=this._mediaInfo;p.audioCodec=h.originalCodec,p.audioSampleRate=h.audioSampleRate,p.audioChannelCount=h.channelCount,p.hasVideo?null!=p.videoCodec&&(p.mimeType='video/x-flv; codecs="'+p.videoCodec+","+p.audioCodec+'"'):p.mimeType='video/x-flv; codecs="'+p.audioCodec+'"',p.isComplete()&&this._onMediaInfo(p)}else if(1===c.packetType){var v=this._timestampBase+i,g={unit:c.data,length:c.data.byteLength,dts:v,pts:v};f.samples.push(g),f.length+=c.data.length}else l.default.e(this.TAG,"Flv: Unsupported AAC data type "+c.packetType)}else if(2===a){if(!h.codec){var y=this._parseMP3AudioData(e,t+1,n-1,!0);if(void 0==y)return;h.audioSampleRate=y.samplingRate,h.channelCount=y.channelCount,h.codec=y.codec,h.originalCodec=y.originalCodec,h.refSampleDuration=1152/h.audioSampleRate*h.timescale,l.default.v(this.TAG,"Parsed MPEG Audio Frame Header"),this._audioInitialMetadataDispatched=!0,this._onTrackMetadata("audio",h);var E=this._mediaInfo;E.audioCodec=h.codec,E.audioSampleRate=h.audioSampleRate,E.audioChannelCount=h.channelCount,E.audioDataRate=y.bitRate,E.hasVideo?null!=E.videoCodec&&(E.mimeType='video/x-flv; codecs="'+E.videoCodec+","+E.audioCodec+'"'):E.mimeType='video/x-flv; codecs="'+E.audioCodec+'"',E.isComplete()&&this._onMediaInfo(E)}var b=this._parseMP3AudioData(e,t+1,n-1,!1);if(void 0==b)return;var S=this._timestampBase+i,k={unit:b,length:b.byteLength,dts:S,pts:S};f.samples.push(k),f.length+=b.length}}}},{key:"_parseAACAudioData",value:function(e,t,n){if(n<=1)return void l.default.w(this.TAG,"Flv: Invalid AAC packet, missing AACPacketType or/and Data!");var i={},r=new Uint8Array(e,t,n);return i.packetType=r[0],0===r[0]?i.data=this._parseAACAudioSpecificConfig(e,t+1,n-1):i.data=r.subarray(1),i}},{key:"_parseAACAudioSpecificConfig",value:function(e,t,n){var i=new Uint8Array(e,t,n),r=null,s=0,a=0,o=0,u=null;if(s=a=i[0]>>>3,(o=(7&i[0])<<1|i[1]>>>7)<0||o>=this._mpegSamplingRates.length)return void this._onError(m.default.FORMAT_ERROR,"Flv: AAC invalid sampling frequency index!");var l=this._mpegSamplingRates[o],d=(120&i[1])>>>3;if(d<0||d>=8)return void this._onError(m.default.FORMAT_ERROR,"Flv: AAC invalid channel configuration");5===s&&(u=(7&i[1])<<1|i[2]>>>7,i[2]);var h=self.navigator.userAgent.toLowerCase();return-1!==h.indexOf("firefox")?o>=6?(s=5,r=new Array(4),u=o-3):(s=2,r=new Array(2),u=o):-1!==h.indexOf("android")?(s=2,r=new Array(2),u=o):(s=5,u=o,r=new Array(4),o>=6?u=o-3:1===d&&(s=2,r=new Array(2),u=o)),r[0]=s<<3,r[0]|=(15&o)>>>1,r[1]=(15&o)<<7,r[1]|=(15&d)<<3,5===s&&(r[1]|=(15&u)>>>1,r[2]=(1&u)<<7,r[2]|=8,r[3]=0),{config:r,samplingRate:l,channelCount:d,codec:"mp4a.40."+s,originalCodec:"mp4a.40."+a}}},{key:"_parseMP3AudioData",value:function(e,t,n,i){if(n<4)return void l.default.w(this.TAG,"Flv: Invalid MP3 packet, header missing!");var r=(this._littleEndian,new Uint8Array(e,t,n)),s=null;if(i){if(255!==r[0])return;var a=r[1]>>>3&3,o=(6&r[1])>>1,u=(240&r[2])>>>4,d=(12&r[2])>>>2,h=r[3]>>>6&3,f=3!==h?2:1,c=0,_=0;switch(a){case 0:c=this._mpegAudioV25SampleRateTable[d];break;case 2:c=this._mpegAudioV20SampleRateTable[d];break;case 3:c=this._mpegAudioV10SampleRateTable[d]}switch(o){case 1:34,u<this._mpegAudioL3BitRateTable.length&&(_=this._mpegAudioL3BitRateTable[u]);break;case 2:33,u<this._mpegAudioL2BitRateTable.length&&(_=this._mpegAudioL2BitRateTable[u]);break;case 3:32,u<this._mpegAudioL1BitRateTable.length&&(_=this._mpegAudioL1BitRateTable[u])}s={bitRate:_,samplingRate:c,channelCount:f,codec:"mp3",originalCodec:"mp3"}}else s=r;return s}},{key:"_parseVideoData",value:function(e,t,n,i,r){if(n<=1)return void l.default.w(this.TAG,"Flv: Invalid video packet, missing VideoData payload!");if(!0!==this._hasVideoFlagOverrided||!1!==this._hasVideo){var s=new Uint8Array(e,
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