6 lines
16 KiB
JavaScript
Executable File
6 lines
16 KiB
JavaScript
Executable File
/*
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录音
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https://github.com/xiangyuecn/Recorder
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src: recorder-core.js
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*/
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!function(I){"use strict";var d=function(){},P=function(e){return new t(e)};P.LM="2023-06-10 21:09";var w="Recorder",C="getUserMedia",U="srcSampleRate",W="sampleRate",L="catch";P.IsOpen=function(){var e=P.Stream;if(e){var t=e.getTracks&&e.getTracks()||e.audioTracks||[],r=t[0];if(r){var n=r.readyState;return"live"==n||n==r.LIVE}}return!1},P.BufferSize=4096,P.Destroy=function(){for(var e in z(w+" Destroy"),y(),r)r[e]()};var r={};P.BindDestroy=function(e,t){r[e]=t},P.Support=function(){var e=navigator.mediaDevices||{};return e[C]||(e=navigator)[C]||(e[C]=e.webkitGetUserMedia||e.mozGetUserMedia||e.msGetUserMedia),!!e[C]&&(P.Scope=e,!!P.GetContext())},P.GetContext=function(){var e=I.AudioContext;return e||(e=I.webkitAudioContext),e?(P.Ctx&&"closed"!=P.Ctx.state||(P.Ctx=new e,P.BindDestroy("Ctx",function(){var e=P.Ctx;e&&e.close&&(e.close(),P.Ctx=0)})),P.Ctx):null};var A="ConnectEnableWebM";P[A]=!0;var T="ConnectEnableWorklet";P[T]=!1;var S=function(e,c){var f,r,u,l=e.BufferSize||P.BufferSize,v=P.Ctx,p=e.Stream,i=function(e){var t=p._m=v.createMediaStreamSource(p);t.connect(e),e.connect(v.destination)},h="",g=p._call,m=function(e){for(var t in g){for(var r=e.length,n=new Int16Array(r),a=0,o=0;o<r;o++){var i=Math.max(-1,Math.min(1,e[o]));i=i<0?32768*i:32767*i,n[o]=i,a+=Math.abs(i)}for(var s in g)g[s](n,a);return}},d="ScriptProcessor",C="audioWorklet",s=w+" "+C,S="RecProc",y="MediaRecorder",_=y+".WebM.PCM",b=v.createScriptProcessor||v.createJavaScriptNode,k="。由于"+C+"内部1秒375次回调，在移动端可能会有性能问题导致回调丢失录音变短，PC端无影响，暂不建议开启"+C+"。",M=function(){r=p.isWorklet=!1,D(p),z("Connect采用老的"+d+"，"+(P[T]?"但已":"可")+"设置"+w+"."+T+"=true尝试启用"+C+h+k,3);var e=p._p=b.call(v,l,1,1);i(e),e.onaudioprocess=function(e){var t=e.inputBuffer.getChannelData(0);m(t)}},x=function(){f=p.isWebM=!1,O(p),r=p.isWorklet=!b||P[T];var t=I.AudioWorkletNode;if(r&&v[C]&&t){var n=function(){return 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s=~~((i+=e.length)/a)*a;if(s){this.port.postMessage({val:o.slice(0,s)});var c=o.subarray(s,i);(o=new Float32Array(2*a)).set(c),i=c.length,n.buffer=o}n.pos=i}return!n.kill}),t=(t+='}try{registerProcessor("'+S+'", '+S+')}catch(e){$C.error("'+s+'注册失败",e)}').replace(/\$C\./g,"console."),"data:text/javascript;base64,"+btoa(unescape(encodeURIComponent(t))));v[C].addModule(r).then(function(e){n()&&(v[S]=1,o(),u&&a())})[L](function(e){z(C+".addModule失败",1,e),n()&&M()})}})}else M()};!function(){var e=I[y],t="ondataavailable",r="audio/webm; codecs=pcm";f=p.isWebM=P[A];var n=e&&t in e.prototype&&e.isTypeSupported(r);if(h=n?"":"（此浏览器不支持"+_+"）",!c||!f||!n)return x();var a=function(){return f&&p._ra},o=(p._ra=function(){""!==u&&(clearTimeout(u),u=setTimeout(function(){a()&&(z(y+"未返回任何音频，降级使用"+C,3),x())},500))},Object.assign({mimeType:r},P.ConnectWebMOptions)),i=p._r=new e(p,o),s=p._rd={sampleRate:v[W]};i[t]=function(e){var t=new FileReader;t.onloadend=function(){if(a()){var e=F(new 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"+w+(a?":"+a:"")+"]"+e],i=arguments,s=I.console||{},c=2,f=s.log;for("number"==typeof t?f=1==t?s.error:3==t?s.warn:f:c=1;c<i.length;c++)o.push(i[c]);u?f&&f("[IsLoser]"+o[0],1<o.length?o:""):f.apply(s,o)};var z=function(){P.CLog.apply(this,arguments)},u=!0;try{u=!console.log.apply}catch(e){}var n=0;function t(e){this.id=++n,o();var t={type:"mp3",bitRate:16,sampleRate:16e3,onProcess:d};for(var r in e)t[r]=e[r];this.set=t,this._S=9,this.Sync={O:9,C:9}}P.Sync={O:9,C:9},P.prototype=t.prototype={CLog:z,_streamStore:function(){return this.set.sourceStream?this:P},open:function(e,r){var n=this,t=n.set,a=n._streamStore();e=e||d;var o=function(e,t){t=!!t,n.CLog("录音open失败："+e+",isUserNotAllow:"+t,1),r&&r(e,t)},i=function(){n.CLog("open ok id:"+n.id),e(),n._SO=0},s=a.Sync,c=++s.O,f=s.C;n._O=n._O_=c,n._SO=n._S;var u=n.envCheck({envName:"H5",canProcess:!0});if(u)o("不能录音："+u);else if(t.sourceStream){if(!P.GetContext())return void o("不支持此浏览器从流中获取录音");y(a),n.Stream=t.sourceStream,n.Stream._call={};try{S(a)}catch(e){return void o("从流中打开录音失败："+e.message)}i()}else{var l=function(e,t){try{I.top.a}catch(e){return void o('无权录音(跨域，请尝试给iframe添加麦克风访问策略，如allow="camera;microphone")')}/Permission|Allow/i.test(e)?o("用户拒绝了录音权限",!0):!1===I.isSecureContext?o("浏览器禁止不安全页面录音，可开启https解决"):/Found/i.test(e)?o(t+"，无可用麦克风"):o(t)};if(P.IsOpen())i();else if(P.Support()){var v=function(t){setTimeout(function(){t._call={};var e=P.Stream;e&&(y(),t._call=e._call),P.Stream=t,function(){if(f!=s.C||!n._O){var e="open被取消";return c==s.O?n.close():e="open被中断",o(e),!0}}()||(P.IsOpen()?(e&&n.CLog("发现同时多次调用open",1),S(a,1),i()):o("录音功能无效：无音频流"))},100)},p=function(e){var t=e.name||e.message||e.code+":"+e;n.CLog("请求录音权限错误",1,e),l(t,"无法录音："+t)},h=t.audioTrackSet||{};h.sampleRate=P.Ctx.sampleRate;var g={audio:h};try{var m=P.Scope[C](g,v,p)}catch(e){n.CLog(C,3,e),g={audio:!0},m=P.Scope[C](g,v,p)}n.CLog(C+"("+JSON.stringify(g)+")，一般默认会降噪和回声消除，移动端可能会降低系统播放音量，请参阅文档中audioTrackSet配置"),m&&m.then&&m.then(v)[L](p)}else l("","此浏览器不支持录音")}},close:function(e){e=e||d;var t=this,r=t._streamStore();t._stop();var n=r.Sync;if(t._O=0,t._O_!=n.O)return t.CLog("close被忽略（因为同时open了多个rec，只有最后一个会真正close）",3),void e();n.C++,y(r),t.CLog("close"),e()},mock:function(e,t){var r=this;return r._stop(),r.isMock=1,r.mockEnvInfo=null,r.buffers=[e],r.recSize=e.length,r[U]=t,r},envCheck:function(e){var t,r=this.set,n="CPU_BE";if(t||P[n]||!I.Int8Array||new Int8Array(new Int32Array([1]).buffer)[0]||(o(n),t="不支持CPU_BE架构"),!t){var a=r.type;this[a+"_envCheck"]?t=this[a+"_envCheck"](e,r):r.takeoffEncodeChunk&&(t=a+"类型"+(this[a]?"":"(未加载编码器)")+"不支持设置takeoffEncodeChunk")}return t||""},envStart:function(e,t){var r=this,n=r.set;r.isMock=e?1:0,r.mockEnvInfo=e,r.buffers=[],r.recSize=0,r.envInLast=0,r.envInFirst=0,r.envInFix=0,r.envInFixTs=[];var a=n[W];if(t<a?n[W]=t:a=0,r[U]=t,r.CLog(U+": "+t+" set."+W+": "+n[W]+(a?" 忽略"+a:""),a?3:0),r.engineCtx=0,r[n.type+"_start"]){var o=r.engineCtx=r[n.type+"_start"](n);o&&(o.pcmDatas=[],o.pcmSize=0)}},envResume:function(){this.envInFixTs=[]},envIn:function(e,t){var a=this,o=a.set,i=a.engineCtx,r=a[U],n=e.length,s=P.PowerLevel(t,n),c=a.buffers,f=c.length;c.push(e);var u=c,l=f,v=Date.now(),p=Math.round(n/r*1e3);a.envInLast=v,1==a.buffers.length&&(a.envInFirst=v-p);var h=a.envInFixTs;h.splice(0,0,{t:v,d:p});for(var g=v,m=0,d=0;d<h.length;d++){var C=h[d];if(3e3<v-C.t){h.length=d;break}g=C.t,m+=C.d}var S=h[1],y=v-g;if(y/3<y-m&&(S&&1e3<y||6<=h.length)){var _=v-S.t-p;if(p/5<_){var b=!o.disableEnvInFix;if(a.CLog("["+v+"]"+(b?"":"未")+"补偿"+_+"ms",3),a.envInFix+=_,b){var k=new Int16Array(_*r/1e3);n+=k.length,c.push(k)}}}var M=a.recSize,x=n,I=M+x;if(a.recSize=I,i){var w=P.SampleData(c,r,o[W],i.chunkInfo);i.chunkInfo=w,I=(M=i.pcmSize)+(x=w.data.length),i.pcmSize=I,c=i.pcmDatas,f=c.length,c.push(w.data),r=w[W]}var L=Math.round(I/r*1e3),A=c.length,T=u.length,D=function(){for(var e=O?0:-x,t=null==c[0],r=f;r<A;r++){var n=c[r];null==n?t=1:(e+=n.length,i&&n.length&&a[o.type+"_encode"](i,n))}if(t&&i)for(r=l,u[0]&&(r=0);r<T;r++)u[r]=null;t&&(e=O?x:0,c[0]=null),i?i.pcmSize+=e:a.recSize+=e},O=0,z="rec.set.onProcess";try{O=o.onProcess(c,s,L,r,f,D)}catch(e){console.error(z+"回调出错是不允许的，需保证不会抛异常",e)}var F=Date.now()-v;if(10<F&&1e3<a.envInFirst-v&&a.CLog(z+"低性能，耗时"+F+"ms",3),!0===O){var R=0;for(d=f;d<A;d++)null==c[d]?R=1:c[d]=new Int16Array(0);R?a.CLog("未进入异步前不能清除buffers",3):i?i.pcmSize-=x:a.recSize-=x}else D()},start:function(){var t=this,r=P.Ctx,e=1;if(t.set.sourceStream?t.Stream||(e=0):P.IsOpen()||(e=0),e)if(t.CLog("开始录音"),t._stop(),t.state=3,t.envStart(null,r[W]),t._SO&&t._SO+1!=t._S)t.CLog("start被中断",3);else{t._SO=0;var n=function(){3==t.state&&(t.state=1,t.resume())};if("suspended"==r.state){var a="AudioContext resume: ";t.CLog(a+"wait..."),r.resume().then(function(){t.CLog(a+r.state),n()})[L](function(e){t.CLog(a+r.state+" 可能无法录音："+e.message,1,e),n()})}else n()}else t.CLog("未open",1)},pause:function(){var e=this;e.state&&(e.state=2,e.CLog("pause"),delete e._streamStore().Stream._call[e.id])},resume:function(){var e,r=this;if(r.state){r.state=1,r.CLog("resume"),r.envResume();var t=r._streamStore().Stream;t._call[r.id]=function(e,t){1==r.state&&r.envIn(e,t)},(e=t)._na&&e._na(),e._ra&&e._ra()}},_stop:function(e){var t=this,r=t.set;t.isMock||t._S++,t.state&&(t.pause(),t.state=0),!e&&t[r.type+"_stop"]&&(t[r.type+"_stop"](t.engineCtx),t.engineCtx=0)},stop:function(r,t,e){var n,a=this,o=a.set,i=a.envInLast-a.envInFirst,s=i&&a.buffers.length;a.CLog("stop 和start时差"+(i?i+"ms 补偿"+a.envInFix+"ms envIn:"+s+" fps:"+(s/i*1e3).toFixed(1):"-"));var c=function(){a._stop(),e&&a.close()},f=function(e){a.CLog("结束录音失败："+e,1),t&&t(e),c()},u=function(e,t){if(a.CLog("结束录音 编码花"+(Date.now()-n)+"ms 音频时长"+t+"ms 文件大小"+e.size+"b"),o.takeoffEncodeChunk)a.CLog("启用takeoffEncodeChunk后stop返回的blob长度为0不提供音频数据",3);else if(e.size<Math.max(100,t/2))return void f("生成的"+o.type+"无效");r&&r(e,t),c()};if(!a.isMock){var l=3==a.state;if(!a.state||l)return void f("未开始录音"+(l?"，开始录音前无用户交互导致AudioContext未运行":""));a._stop(!0)}var v=a.recSize;if(v)if(a.buffers[0])if(a[o.type]){if(a.isMock){var p=a.envCheck(a.mockEnvInfo||{envName:"mock",canProcess:!1});if(p)return void f("录音错误："+p)}var h=a.engineCtx;if(a[o.type+"_complete"]&&h){var g=Math.round(h.pcmSize/o[W]*1e3);return n=Date.now(),void a[o.type+"_complete"](h,function(e){u(e,g)},f)}n=Date.now();var m=P.SampleData(a.buffers,a[U],o[W]);o[W]=m[W];var d=m.data;g=Math.round(d.length/o[W]*1e3),a.CLog("采样"+v+"->"+d.length+" 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