html+js+css车牌号输入法，不需要添加太多代码，直接引入css和js就可以使用

锈-pixi-js 需要每晚的Rust工具集，wasm-bindgen和npm。 build.sh和clean.sh脚本可构建和清理项目。 run_server.sh在运行webpack-dev-server。

我们在做网页时经常会需要有上传图片的需求，可能是选择图片或者拍照上传。本文记录了使用css+js实现图片选中后的预览及压缩上传功能，需要的朋友参考下吧

layer.css移动端弹窗组件

Vue3 + TypeScript + Uniapp 开发小程序【医疗小程序完整案例·一篇文章精通系列】Vue3 + TypeScript + Uniapp 开发小程序【医疗小程序完整案例·一篇文章精通系列】Vue3 + TypeScript + Uniapp 开发小程序【医疗小程序完整案例·一篇文章精通系列】Vue3 + TypeScript + Uniapp 开发小程序【医疗小程序完整案例·一篇文章精通系列】Vue3 + TypeScript + Uniapp 开发小程序【医疗小程序完整案例·一篇文章精通系列】

JS下载文件、图片，JS打包下载。支持IE、谷歌、火狐、360浏览器。适用于前端人员。 博文已贴源码，点此跳转：https://blog.csdn.net/qq_33427869/article/details/127370164

将Unity场景中的模型对象，导出为 glTF 2.0 标准格式的文件，可供 Three.js 等引擎调用。

flask+vue3+sqlite 前后端分离 简单个人博客网站项目 Vue3采用新的组件式API开发，axios后端接口请求。 flask采用sqlalchemy管理数据库，采用token验证登陆信息。 已实现文章列表显示，文章内容markdown渲染，文章内容创建，修改，删除。 很适合用来入门学习，爱好研究。 具体框架： 前端：Vue3+vue-router+axios+v-markdown+bootstrap+tailwindcss 后端：flask+sqlite+sqlalchemy 特别说明：网页UI为开源静态HTML模板，于模板之家下载，在本资源中不提供原始HTML文件，如有需要请自行下载。

之前找了很久的js混淆工具，很多都是付费的...经过漫漫寻找终于找到这个安装之后就可以使用的js混淆工具，作者来自国外..支持大的js文件混淆压缩处理. 为了方便大家，特意提供了一个反混淆工具供大家分析，学习使用. 【注】对于一些核心的js，不建议使用在线js混淆压缩服务，因为在线工具都有人服务日志等，可能会被泄露

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r=t[e+1]>>3&3,i=t[e+1]>>1&3,a=t[e+2]>>4&15;,n=t[e+2]>>2&3,o=!!(2&t[e+2]);if(1!==r&&0!==a&&15;!==a&&3!==n){var s=3===r?3-i:3===i?3:4,l=1e3*V.BitratesMap[14*s+a-1],u=3===r?0:2===r?1:2,d=V.SamplingRateMap[3*u+n],h=o?1:0;return{sampleRate:d,channelCount:t[e+3]>>6==3?1:2,frameLength:3===i?(3===r?12:6)*l/d+h<<2:(3===r?144:72)*l/d+h|0}}},isHeaderPattern:function(t,e){return 255===t[e]&&224;==(224&t[e+1])&&0!=(6&t[e+1])},isHeader:function(t,e){return!!(e+1t?(this.word<<=t,this.bitsAvailable-=t):(t-=this.bitsAvailable,e=t>>3,t-=e>>3,this.bytesAvailable-=e,this.loadWord(),this.word<<=t,this.bitsAvailable-=t)},t.prototype.readBits=function(t){var e=Math.min(this.bitsAvailable,t),r=this.word>>>32-e;return t>32&&N.b.error("Cannot read more than 32 bits at a time"),this.bitsAvailable-=e,this.bitsAvailable>0?this.word<<=e:this.bytesAvailable>0&&this;.loadWord(),e=t-e,e>0&&this;.bitsAvailable?r<>>t))return this.word<<=t,this.bitsAvailable-=t,t;return this.loadWord(),t+this.skipLZ()},t.prototype.skipUEG=function(){this.skipBits(1+this.skipLZ())},t.prototype.skipEG=function(){this.skipBits(1+this.skipLZ())},t.prototype.readUEG=function(){var t=this.skipLZ();return this.readBits(t+1)-1},t.prototype.readEG=function(){var t=this.readUEG();return 1&t?1+t>>>1:-1*(t>>>1)},t.prototype.readBoolean=function(){return 1===this.readBits(1)},t.prototype.readUByte=function(){return this.readBits(8)},t.prototype.readUShort=function(){return this.readBits(16)},t.prototype.readUInt=function(){return this.readBits(32)},t.prototype.skipScalingList=function(t){var e,r,i=8,a=8;for(e=0;e=t.length)return void r();if(!(t[e].unit.length<32)){var i=this.decrypter.isSync();if(this.decryptAacSample(t,e,r,i),!i)return}}},t.prototype.getAvcEncryptedData=function(t){for(var e=16*Math.floor((t.length-48)/160)+16,r=new Int8Array(e),i=0,a=32;a<=t.length-16;a+=160,i+=16)r.set(t.subarray(a,a+16),i);return r},t.prototype.getAvcDecryptedUnit=function(t,e){e=new Uint8Array(e);for(var r=0,i=32;i<=t.length-16;i+=160,r+=16)t.set(e.subarray(r,r+16),i);return t},t.prototype.decryptAvcSample=function(t,e,r,i,a,n){var o=this.discardEPB(a.data),s=this.getAvcEncryptedData(o),l=this;this.decryptBuffer(s.buffer,function(s){a.data=l.getAvcDecryptedUnit(o,s),n||l.decryptAvcSamples(t,e,r+1,i)})},t.prototype.decryptAvcSamples=function(t,e,r,i){for(;;e++,r=0){if(e>=t.length)return void i();for(var a=t[e].units;!(r>=a.length);r++){var n=a[r];if(!(n.length<=48||1!==n.type&&5!==n.type)){var o=this.decrypter.isSync();if(this.decryptAvcSample(t,e,r,i,n,o),!o)return}}}},t}(),Q=q,J=function(){function t(e,r,i,a){T(this,t),this.observer=e,this.config=i,this.typeSupported=a,this.remuxer=r,this.sampleAes=null}return t.prototype.setDecryptData=function(t){null!=t&&null;!=t.key&&"SAMPLE-AES"===t.method?this.sampleAes=new Q(this.observer,this.config,t,this.discardEPB):this.sampleAes=null},t.probe=function(t){return t.length>=564&&71;===t[0]&&71;===t[188]&&71;===t[376]},t.prototype.resetInitSegment=function(t,e,r,i){this.pmtParsed=!1,this._pmtId=-1,this._avcTrack={container:"video/mp2t",type:"video",id:-1,inputTimeScale:9e4,sequenceNumber:0,samples:[],len:0,dropped:0},this._audioTrack={container:"video/mp2t",type:"audio",id:-1,inputTimeScale:9e4,duration:i,sequenceNumber:0,samples:[],len:0,isAAC:!0},this._id3Track={type:"id3",id:-1,inputTimeScale:9e4,sequenceNumber:0,samples:[],len:0},this._txtTrack={type:"text",id:-1,inputTimeScale:9e4,sequenceNumber:0,samples:[],len:0},this.aacOverFlow=null,this.aacLastPTS=null,this.avcSample=null,this.audioCodec=e,this.videoCodec=r,this._duration=i},t.prototype.resetTimeStamp=function(){},t.prototype.append=function(t,e,r,i){var a,n,o,s,l,u=t.length,d=!1;this.contiguous=r;var h=this.pmtParsed,c=this._avcTrack,f=this._audioTrack,p=this._id3Track,g=c.id,v=f.id,y=p.id,m=this._pmtId,b=c.pesData,E=f.pesData,T=p.pesData,R=this._parsePAT,S=this._parsePMT,A=this._parsePES,_=this._parseAVCPES.bind(this),L=this._parseAACPES.bind(this),w=this._parseMPEGPES.bind(this),I=this._parseID3PES.bind(this);for(u-=u8,a=0;a>4>1){if((s=a+5+t[a+4])===a+188)continue}else s=a+4;switch(o){case g:n&&(b&&(l=A(b))&&_(l,!1),b={data:[],size:0}),b&&(b.data.push(t.subarray(s,a+188)),b.size+=a+188-s);break;case v:n&&(E&&(l=A(E))&&(f.isAAC?L(l):w(l)),E={data:[],size:0}),E&&(E.data.push(t.subarray(s,a+188)),E.size+=a+188-s);break;case y:n&&(T&&(l=A(T))&&I(l),T={data:[],size:0}),T&&(T.data.push(t.subarray(s,a+188)),T.size+=a+188-s);break;case 0:n&&(s+=t[s]+1),m=this._pmtId=R(t,s);break;case m:n&&(s+=t[s]+1);var O=S(t,s,!0===this.typeSupported.mpeg||!0===this.typeSupported.mp3,null!=this.sampleAes);g=O.avc,g>0&&(c.id=g),v=O.audio,v>0&&(f.id=v,f.isAAC=O.isAAC),y=O.id3,y>0&&(p.id=y),d&&!h&&(N.b.log("reparse from beginning"),d=!1,a=-188),h=this.pmtParsed=!0;break;case 17:case 8191:break;default:d=!0}}else this.observer.trigger(D.a.ERROR,{type:k.b.MEDIA_ERROR,details:k.a.FRAG_PARSING_ERROR,fatal:!1,reason:"TS packet did not start with 0x47"});b&&(l=A(b))?(_(l,!0),c.pesData=null):c.pesData=b,E&&(l=A(E))?(f.isAAC?L(l):w(l),f.pesData=null):(E&&E.size&&N.b.log("last AAC PES packet truncated,might overlap between fragments"),f.pesData=E),T&&(l=A(T))?(I(l),p.pesData=null):p.pesData=T,null==this.sampleAes?this.remuxer.remux(f,c,p,this._txtTrack,e,r,i):this.decryptAndRemux(f,c,p,this._txtTrack,e,r,i)},t.prototype.decryptAndRemux=function(t,e,r,i,a,n,o){if(t.samples&&t.isAAC){var s=this;this.sampleAes.decryptAacSamples(t.samples,0,function(){s.decryptAndRemuxAvc(t,e,r,i,a,n,o)})}else this.decryptAndRemuxAvc(t,e,r,i,a,n,o)},t.prototype.decryptAndRemuxAvc=function(t,e,r,i,a,n,o){if(e.samples){var s=this;this.sampleAes.decryptAvcSamples(e.samples,0,0,function(){s.remuxer.remux(t,e,r,i,a,n,o)})}else this.remuxer.remux(t,e,r,i,a,n,o)},t.prototype.destroy=function(){this._initPTS=this._initDTS=void 0,this._duration=0},t.prototype._parsePAT=function(t,e){return(31&t[e+10])<<8|t[e+11]},t.prototype._parsePMT=function(t,e,r,i){var a,n,o,s,l={audio:-1,avc:-1,id3:-1,isAAC:!0};for(a=(15&t[e+1])<<8|t[e+2],n=e+3+a-4,o=(15&t[e+10])<<8|t[e+11],e+=12+o;e1;){var h=new Uint8Array(d[0].length+d[1].length);h.set(d[0]),h.set(d[1],d[0].length),d[0]=h,d.splice(1,1)}if(e=d[0],1===(e[0]<<16)+(e[1]<<8)+e[2]){if((i=(e[4]<<8)+e[5])&&i>t.size-6)return null;r=e[7],192&r&&(o=536870912*(14&e[9])+4194304*(255&e[10])+16384*(254&e[11])+128*(255&e[12])+(254&e[13])/2,o>4294967295&&(o-=8589934592),64&r?(s=536870912*(14&e[14])+4194304*(255&e[15])+16384*(254&e[16])+128*(255&e[17])+(254&e[18])/2,s>4294967295&&(s-=8589934592),o-s>54e5&&(N.b.warn(Math.round((o-s)/9e4)+"s delta between PTS and DTS, align them"),o=s)):s=o),a=e[8],l=a+9,t.size-=l,n=new Uint8Array(t.size);for(var c=0,f=d.length;cp){l-=p;continue}e=e.subarray(l),p-=l,l=0}n.set(e,u),u+=p}return i&&(i-=a+3),{data:n,pts:o,dts:s,len:i}}return null},t.prototype.pushAccesUnit=function(t,e){if(t.units.length&&t.frame){var r=e.samples,i=r.length;!this.config.forceKeyFrameOnDiscontinuity||!0===t.key||e.sps&&(i||this.contiguous)?(t.id=i,r.push(t)):e.dropped++}t.debug.length&&N.b.log(t.pts+"/"+t.dts+":"+t.debug)},t.prototype._parseAVCPES=function(t,e){var r,i,a,n=this,o=this._avcTrack,s=this._parseAVCNALu(t.data),l=this.avcSample,u=!1,d=this.pushAccesUnit.bind(this),h=function(t,e,r,i){return{key:t,pts:e,dts:r,units:[],debug:i}};t.data=null,l&&s.length&&(d(l,o),l=this.avcSample=h(!1,t.pts,t.dts,"")),s.forEach(function(e){switch(e.type){case 1:i=!0,l.frame=!0;var s=e.data;if(u&&s.length>4){var c=new z(s).readSliceType();2!==c&&4!==c&&7!==c&&9!==c||(l.key=!0)}break;case 5:i=!0,l||(l=n.avcSample=h(!0,t.pts,t.dts,"")),l.key=!0,l.frame=!0;break;case 6:i=!0,r=new z(n.discardEPB(e.data)),r.readUByte();for(var f=0,p=0,g=!1,v=0;!g&&r.bytesAvailable>1;){f=0;do{v=r.readUByte(),f+=v}while(255===v);p=0;do{v=r.readUByte(),p+=v}while(255===v);if(4===f&&0!==r.bytesAvailable){g=!0;if(181===r.readUByte()){if(49===r.readUShort()){if(1195456820===r.readUInt()){if(3===r.readUByte()){var y=r.readUByte(),m=r.readUByte(),b=31&y,E=[y,m];for(a=0;a0){if(e.pts>=t[r-1].pts)t.push(e);else for(var i=r-1;i>=0;i--)if(e.pts=0)i={data:t.subarray(c,o-u-1),type:n},h.push(i);else{var f=this._getLastNalUnit();if(f&&(d&&o<=4-d&&f.state&&(f.data=f.data.subarray(0,f.data.byteLength-d)),(r=o-u-1)>0)){var p=new Uint8Array(f.data.byteLength+r);p.set(f.data,0),p.set(t.subarray(0,r),f.data.byteLength),f.data=p}}o=0&&u>=0&&(i={data:t.subarray(c,s),type:n,state:u},h.push(i)),0===h.length){var g=this._getLastNalUnit();if(g){var v=new Uint8Array(g.data.byteLength+t.byteLength);v.set(g.data,0),v.set(t,g.data.byteLength),g.data=v}}return l.naluState=u,h},t.prototype.discardEPB=function(t){for(var e,r,i=t.byteLength,a=[],n=1;n1&&(N.b.log("AAC: align PTS for overlapping frames by "+Math.round((m-l)/90)),l=m)}for(;i>24&255;,e[1]=i>>16&255;,e[2]=i>>8&255;,e[3]=255&i,e.set(t,4),a=0,i=8;a>24&255;,e>>16&255;,e>>8&255;,255&e,i>>24,i>>16&255;,i>>8&255;,255&i,a>>24,a>>16&255;,a>>8&255;,255&a,85,196,0,0]))},t.mdia=function(e){return t.box(t.types.mdia,t.mdhd(e.timescale,e.duration),t.hdlr(e.type),t.minf(e))},t.mfhd=function(e){return t.box(t.types.mfhd,new Uint8Array([0,0,0,0,e>>24,e>>16&255;,e>>8&255;,255&e]))},t.minf=function(e){return"audio"===e.type?t.box(t.types.minf,t.box(t.types.smhd,t.SMHD),t.DINF,t.stbl(e)):t.box(t.types.minf,t.box(t.types.vmhd,t.VMHD),t.DINF,t.stbl(e))},t.moof=function(e,r,i){return t.box(t.types.moof,t.mfhd(e),t.traf(i,r))},t.moov=function(e){for(var r=e.length,i=[];r--;)i[r]=t.trak(e[r]);return t.box.apply(null,[t.types.moov,t.mvhd(e[0].timescale,e[0].duration)].concat(i).concat(t.mvex(e)))},t.mvex=function(e){for(var r=e.length,i=[];r--;)i[r]=t.trex(e[r]);return t.box.apply(null,[t.types.mvex].concat(i))},t.mvhd=function(e,r){r*=e;var i=Math.floor(r/(it+1)),a=Math.floor(r%(it+1)),n=new Uint8Array([1,0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,3,e>>24&255;,e>>16&255;,e>>8&255;,255&e,i>>24,i>>16&255;,i>>8&255;,255&i,a>>24,a>>16&255;,a>>8&255;,255&a,0,1,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,64,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255]);return t.box(t.types.mvhd,n)},t.sdtp=function(e){var r,i,a=e.samples||[],n=new Uint8Array(4+a.length);for(i=0;i>>8&255;),n.push(255&a),n=n.concat(Array.prototype.slice.call(i));for(r=0;r>>8&255;),o.push(255&a),o=o.concat(Array.prototype.slice.call(i));var s=t.box(t.types.avcC,new Uint8Array([1,n[3],n[4],n[5],255,224|e.sps.length].concat(n).concat([e.pps.length]).concat(o))),l=e.width,u=e.height,d=e.pixelRatio[0],h=e.pixelRatio[1];return t.box(t.types.avc1,new Uint8Array([0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,l>>8&255;,255&l,u>>8&255;,255&u,0,72,0,0,0,72,0,0,0,0,0,0,0,1,18,100,97,105,108,121,109,111,116,105,111,110,47,104,108,115,46,106,115,0,0,0,0,0,0,0,0,0,0,0,0,0,0,24,17,17]),s,t.box(t.types.btrt,new Uint8Array([0,28,156,128,0,45,198,192,0,45,198,192])),t.box(t.types.pasp,new Uint8Array([d>>24,d>>16&255;,d>>8&255;,255&d,h>>24,h>>16&255;,h>>8&255;,255&h])))},t.esds=function(t){var e=t.config.length;return new Uint8Array([0,0,0,0,3,23+e,0,1,0,4,15+e,64,21,0,0,0,0,0,0,0,0,0,0,0,5].concat([e]).concat(t.config).concat([6,1,2]))},t.mp4a=function(e){var r=e.samplerate;return t.box(t.types.mp4a,new Uint8Array([0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,e.channelCount,0,16,0,0,0,0,r>>8&255;,255&r,0,0]),t.box(t.types.esds,t.esds(e)))},t.mp3=function(e){var r=e.samplerate;return t.box(t.types[".mp3"],new Uint8Array([0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,e.channelCount,0,16,0,0,0,0,r>>8&255;,255&r,0,0]))},t.stsd=function(e){return"audio"===e.type?e.isAAC||"mp3"!==e.codec?t.box(t.types.stsd,t.STSD,t.mp4a(e)):t.box(t.types.stsd,t.STSD,t.mp3(e)):t.box(t.types.stsd,t.STSD,t.avc1(e))},t.tkhd=function(e){var r=e.id,i=e.duration*e.timescale,a=e.width,n=e.height,o=Math.floor(i/(it+1)),s=Math.floor(i%(it+1));return t.box(t.types.tkhd,new Uint8Array([1,0,0,7,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,3,r>>24&255;,r>>16&255;,r>>8&255;,255&r,0,0,0,0,o>>24,o>>16&255;,o>>8&255;,255&o,s>>24,s>>16&255;,s>>8&255;,255&s,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,64,0,0,0,a>>8&255;,255&a,0,0,n>>8&255;,255&n,0,0]))},t.traf=function(e,r){var i=t.sdtp(e),a=e.id,n=Math.floor(r/(it+1)),o=Math.floor(r%(it+1));return t.box(t.types.traf,t.box(t.types.tfhd,new Uint8Array([0,0,0,0,a>>24,a>>16&255;,a>>8&255;,255&a])),t.box(t.types.tfdt,new Uint8Array([1,0,0,0,n>>24,n>>16&255;,n>>8&255;,255&n,o>>24,o>>16&255;,o>>8&255;,255&o])),t.trun(e,i.length+16+20+8+16+8+8),i)},t.trak=function(e){return e.duration=e.duration||4294967295,t.box(t.types.trak,t.tkhd(e),t.mdia(e))},t.trex=function(e){var r=e.id;return t.box(t.types.trex,new Uint8Array([0,0,0,0,r>>24,r>>16&255;,r>>8&255;,255&r,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,1]))},t.trun=function(e,r){var i,a,n,o,s,l,u=e.samples||[],d=u.length,h=12+16*d,c=new Uint8Array(h);for(r+=8+h,c.set([0,0,15,1,d>>>24&255;,d>>>16&255;,d>>>8&255;,255&d,r>>>24&255;,r>>>16&255;,r>>>8&255;,255&r],0),i=0;i>>24&255;,n>>>16&255;,n>>>8&255;,255&n,o>>>24&255;,o>>>16&255;,o>>>8&255;,255&o,s.isLeading<<2|s.dependsOn,s.isDependedOn<<6|s.hasRedundancy<<4|s.paddingValue<<1|s.isNonSync,61440&s.degradPrio,15&s.degradPrio,l>>>24&255;,l>>>16&255;,l>>>8&255;,255&l],12+16*i);return t.box(t.types.trun,c)},t.initSegment=function(e){t.types||t.init();var r,i=t.moov(e);return r=new Uint8Array(t.FTYP.byteLength+i.byteLength),r.set(t.FTYP),r.set(i,t.FTYP.byteLength),r},t}(),nt=at,ot=function(){function t(e,r,i,a){_(this,t),this.observer=e,this.config=r,this.typeSupported=i;var n=navigator.userAgent;this.isSafari=a&&a.indexOf("Apple")>-1&&n&&!n.match("CriOS"),this.ISGenerated=!1}return t.prototype.destroy=function(){},t.prototype.resetTimeStamp=function(t){this._initPTS=this._initDTS=t},t.prototype.resetInitSegment=function(){this.ISGenerated=!1},t.prototype.remux=function(t,e,r,i,a,n,o){if(this.ISGenerated){if(o){var s=this._initPTS,l=this._PTSNormalize,u=t.inputTimeScale||e.inputTimeScale,d=1/0,h=1/0,c=t.samples;if(c.length&&(d=h=l(c[0].pts-u*a,s)),c=e.samples,c.length){var f=c[0];d=Math.min(d,l(f.pts-u*a,s)),h=Math.min(h,l(f.dts-u*a,s))}if(d!==1/0){var p=s-d;Math.abs(p)>10*u&&(N.b.warn("timestamp inconsistency, "+(p/u).toFixed(3)+"s delta against expected value: missing discontinuity ? reset initPTS/initDTS"),this._initPTS=d,this._initDTS=h,this.observer.trigger(D.a.INIT_PTS_FOUND,{initPTS:d}))}}}else this.generateIS(t,e,a);if(this.ISGenerated)if(t.samples.length){t.timescale||(N.b.warn("regenerate InitSegment as audio detected"),this.generateIS(t,e,a));var g=this.remuxAudio(t,a,n,o);if(e.samples.length){var v=void 0;g&&(v=g.endPTS-g.startPTS),e.timescale||(N.b.warn("regenerate InitSegment as video detected"),this.generateIS(t,e,a)),this.remuxVideo(e,a,n,v,o)}}else{var y=void 0;e.samples.length&&(y=this.remuxVideo(e,a,n,o)),y&&t.codec&&this;.remuxEmptyAudio(t,a,n,y)}r.samples.length&&this;.remuxID3(r,a),i.samples.length&&this;.remuxText(i,a),this.observer.trigger(D.a.FRAG_PARSED)},t.prototype.generateIS=function(t,e,r){var i,a,n=this.observer,o=t.samples,s=e.samples,l=this.typeSupported,u="audio/mp4",d={},h={tracks:d},c=void 0===this._initPTS;if(c&&(i=a=1/0),t.config&&o.length&&(t.timescale=t.samplerate,N.b.log("audio sampling rate : "+t.samplerate),t.isAAC||(l.mpeg?(u="audio/mpeg",t.codec=""):l.mp3&&(t.codec="mp3")),d.audio={container:u,codec:t.codec,initSegment:!t.isAAC&&l.mpeg?new Uint8Array:nt.initSegment([t]),metadata:{channelCount:t.channelCount}},c&&(i=a=o[0].pts-t.inputTimeScale*r)),e.sps&&e.pps&&s.length){var f=e.inputTimeScale;e.timescale=f,d.video={container:"video/mp4",codec:e.codec,initSegment:nt.initSegment([e]),metadata:{width:e.width,height:e.height}},c&&(i=Math.min(i,s[0].pts-f*r),a=Math.min(a,s[0].dts-f*r),this.observer.trigger(D.a.INIT_PTS_FOUND,{initPTS:i}))}Object.keys(d).length?(n.trigger(D.a.FRAG_PARSING_INIT_SEGMENT,h),this.ISGenerated=!0,c&&(this._initPTS=i,this._initDTS=a)):n.trigger(D.a.ERROR,{type:k.b.MEDIA_ERROR,details:k.a.FRAG_PARSING_ERROR,fatal:!1,reason:"no audio/video samples found"})},t.prototype.remuxVideo=function(t,e,r,i,a){var n,o,s,l,u,d,h,c=8,f=t.timescale,p=t.samples,g=[],v=p.length,y=this._PTSNormalize,m=this._initDTS,b=this.nextAvcDts,E=this.isSafari;E&&(r|=p.length&&b&&(a&&Math;.abs(e-b/f)<.1||Math.abs(p[0].pts-b-m)1?N.b.log("AVC:"+A+" ms hole between fragments detected,filling it"):A<-1&&N.b.log("AVC:"+-A+" ms overlapping between fragments detected"),u=b,p[0].dts=u,l=Math.max(l-A,b),p[0].pts=l,N.b.log("Video/PTS/DTS adjusted: "+Math.round(l/90)+"/"+Math.round(u/90)+",delta:"+A+" ms")),S=p[p.length-1],h=Math.max(S.dts,0),d=Math.max(S.pts,0,h),E&&(n=Math.round((h-u)/(p.length-1)));for(var _=0,L=0,w=0;w0?U-1:U].dts;if(z.stretchShortVideoTrack){var Q=z.maxBufferHole,J=z.maxSeekHole,$=Math.floor(Math.min(Q,J)*f),Z=(i?l+i*f:this.nextAudioPts)-B.pts;Z>$?(n=Z-q,n<0&&(n=q),N.b.log("It is approximately "+Z/90+" ms to the next segment; using duration "+n/90+" ms for the last video frame.")):n=q}else n=q}j=Math.round(B.pts-B.dts)}g.push({size:H,duration:n,cts:j,flags:{isLeading:0,isDependedOn:0,hasRedundancy:0,degradPrio:0,dependsOn:B.key?2:1,isNonSync:B.key?0:1}})}this.nextAvcDts=h+n;var tt=t.dropped;if(t.len=0,t.nbNalu=0,t.dropped=0,g.length&&navigator;.userAgent.toLowerCase().indexOf("chrome")>-1){var et=g[0].flags;et.dependsOn=2,et.isNonSync=0}t.samples=g,s=nt.moof(t.sequenceNumber++,u,t),t.samples=[];var rt={data1:s,data2:o,startPTS:l/f,endPTS:(d+n)/f,startDTS:u/f,endDTS:this.nextAvcDts/f,type:"video",nb:g.length,dropped:tt};return this.observer.trigger(D.a.FRAG_PARSING_DATA,rt),rt},t.prototype.remuxAudio=function(t,e,r,i){var a,n,o,s,l,u,d,h=t.inputTimeScale,c=t.timescale,f=h/c,p=t.isAAC?1024:1152,g=p*f,v=this._PTSNormalize,y=this._initDTS,m=!t.isAAC&&this;.typeSupported.mpeg,b=t.samples,E=[],T=this.nextAudioPts;if(r|=b.length&&T&&(i&&Math;.abs(e-T/h)<.1||Math.abs(b[0].pts-T-y)<20*g),r||(T=e*h),b.forEach(function(t){t.pts=t.dts=v(t.pts-y,T)}),b.sort(function(t,e){return t.pts-e.pts}),i&&t.isAAC)for(var R=0,S=T;R=g&&w<1e4&&S){var I=Math.round(A/g);N.b.warn("Injecting "+I+" audio frame @ "+(S/h).toFixed(3)+"s due to "+Math.round(1e3*A/h)+" ms gap.");for(var O=0;O0&&B<1e4)G=Math.round((U-T)/g),N.b.log(B+" ms hole between AAC samples detected,filling it"),G>0&&(o=rt.getSilentFrame(t.manifestCodec||t.codec,t.channelCount),o||(o=M.subarray()),t.len+=G*o.length);else if(B<-12){N.b.log("drop overlapping AAC sample, expected/parsed/delta:"+(T/h).toFixed(3)+"s/"+(U/h).toFixed(3)+"s/"+-B+"ms"),t.len-=M.byteLength;continue}U=T}if(u=Math.max(0,U),!(t.len>0))return;var H=m?t.len:t.len+8;a=m?0:8;try{s=new Uint8Array(H)}catch(t){return void this.observer.trigger(D.a.ERROR,{type:k.b.MUX_ERROR,details:k.a.REMUX_ALLOC_ERROR,fatal:!1,bytes:H,reason:"fail allocating audio mdat "+H})}if(!m){new DataView(s.buffer).setUint32(0,H),s.set(nt.types.mdat,4)}for(var j=0;j=2&&(W=E[V-2].duration,n.duration=W),V){this.nextAudioPts=T=d+f*W,t.len=0,t.samples=E,l=m?new Uint8Array:nt.moof(t.sequenceNumber++,u/f,t),t.samples=[];var Y=u/h,X=T/h,z={data1:l,data2:s,startPTS:Y,endPTS:X,startDTS:Y,endDTS:X,type:"audio",nb:V};return this.observer.trigger(D.a.FRAG_PARSING_DATA,z),z}return null},t.prototype.remuxEmptyAudio=function(t,e,r,i){var a=t.inputTimeScale,n=t.samplerate?t.samplerate:a,o=a/n,s=this.nextAudioPts,l=(void 0!==s?s:i.startDTS*a)+this._initDTS,u=i.endDTS*a+this._initDTS,d=1024*o,h=Math.ceil((u-l)/d),c=rt.getSilentFrame(t.manifestCodec||t.codec,t.channelCount);if(N.b.warn("remux empty Audio"),!c)return void N.b.trace("Unable to remuxEmptyAudio since we were unable to get a silent frame for given audio codec!");for(var f=[],p=0;p4294967296;)t+=r;return t},t}(),st=ot,lt=function(){function t(e){L(this,t),this.observer=e}return t.prototype.destroy=function(){},t.prototype.resetTimeStamp=function(){},t.prototype.resetInitSegment=function(){},t.prototype.remux=function(t,e,r,i,a,n,o,s){var l=this.observer,u="";t&&(u+="audio"),e&&(u+="video"),l.trigger(D.a.FRAG_PARSING_DATA,{data1:s,startPTS:a,startDTS:a,type:u,nb:1,dropped:0}),l.trigger(D.a.FRAG_PARSED)},t}(),ut=lt,dt=function(){function t(e,r,i,a){w(this,t),this.observer=e,this.typeSupported=r,this.config=i,this.vendor=a}return t.prototype.destroy=function(){var t=this.demuxer;t&&t.destroy()},t.prototype.push=function(t,e,r,i,a,n,o,s,l,u,d,h){if(t.byteLength>0&&null;!=e&&null;!=e.key&&"AES-128"===e.method){var c=this.decrypter;null==c&&(c=this.decrypter=new U(this.observer,this.config));var f,p=this;try{f=performance.now()}catch(t){f=Date.now()}c.decrypt(t,e.key.buffer,e.iv.buffer,function(t){var c;try{c=performance.now()}catch(t){c=Date.now()}p.observer.trigger(D.a.FRAG_DECRYPTED,{stats:{tstart:f,tdecrypt:c}}),p.pushDecrypted(new Uint8Array(t),e,new Uint8Array(r),i,a,n,o,s,l,u,d,h)})}else this.pushDecrypted(new Uint8Array(t),e,new Uint8Array(r),i,a,n,o,s,l,u,d,h)},t.prototype.pushDecrypted=function(t,e,r,i,a,n,o,s,l,u,d,h){var c=this.demuxer;if(!c||o&&!this.probe(t)){for(var f=this.observer,p=this.typeSupported,g=this.config,v=[{demux:$,remux:st},{demux:H,remux:st},{demux:tt,remux:st},{demux:W,remux:ut}],y=0,m=v.length;ye?i.start+i.duration:Math.max(i.start-a.duration,0):r>e?(i.duration=n-i.start,i.duration<0&&wt;.b.warn("negative duration computed for frag "+i.sn+",level "+i.level+", there should be some duration drift between playlist and fragment!")):(a.duration=i.start-n,a.duration<0&&wt;.b.warn("negative duration computed for frag "+a.sn+",level "+a.level+", there should be some duration drift between playlist and fragment!"))}function v(t,e,r,i,a,n){if(!isNaN(e.startPTS)){var o=Math.abs(e.startPTS-r);isNaN(e.deltaPTS)?e.deltaPTS=o:e.deltaPTS=Math.max(o,e.deltaPTS),r=Math.min(r,e.startPTS),i=Math.max(i,e.endPTS),a=Math.min(a,e.startDTS),n=Math.max(n,e.endDTS)}var s=r-e.start;e.start=e.startPTS=r,e.endPTS=i,e.startDTS=a,e.endDTS=n,e.duration=i-r;var l=e.sn;if(!t||lt.endSN)return 0;var u,d,h;for(u=l-t.startSN,d=t.fragments,e=d[u],h=u;h>0;h--)g(d,h,h-1);for(h=u;h=0&&n

2023-07-10 17:11:50 209KB js

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