recorder.wav.min.js

/*
录音
https://github.com/xiangyuecn/Recorder
src: recorder-core.js,engine/wav.js
*/
!function(y){"use strict";var h=function(){},O=function(e){return new t(e)};O.IsOpen=function(){var e=O.Stream;if(e){var t=e.getTracks&&e.getTracks()||e.audioTracks||[],n=t[0];if(n){var r=n.readyState;return"live"==r||r==n.LIVE}}return!1},O.BufferSize=4096,O.Destroy=function(){for(var e in M("Recorder Destroy"),g(),n)n[e]()};var n={};O.BindDestroy=function(e,t){n[e]=t},O.Support=function(){var e=y.AudioContext;if(e||(e=y.webkitAudioContext),!e)return!1;var t=navigator.mediaDevices||{};return t.getUserMedia||(t=navigator).getUserMedia||(t.getUserMedia=t.webkitGetUserMedia||t.mozGetUserMedia||t.msGetUserMedia),!!t.getUserMedia&&(O.Scope=t,O.Ctx&&"closed"!=O.Ctx.state||(O.Ctx=new e,O.BindDestroy("Ctx",function(){var e=O.Ctx;e&&e.close&&(e.close(),O.Ctx=0)})),!0)};var k="ConnectEnableWorklet";O[k]=!1;var d=function(e){var t=(e=e||O).BufferSize||O.BufferSize,r=O.Ctx,n=e.Stream,a=n._m=r.createMediaStreamSource(n),u=n._call,o=function(e,t){if(!t||h)for(var n in u){for(var r=t||e.inputBuffer.getChannelData(0),a=r.length,o=new Int16Array(a),s=0,i=0;i<a;i++){var c=Math.max(-1,Math.min(1,r[i]));c=c<0?32768*c:32767*c,o[i]=c,s+=Math.abs(c)}for(var f in u)u[f](o,s);return}else M(l+"多余回调",3)},s="ScriptProcessor",l="audioWorklet",i="Recorder",c=i+" "+l,f="RecProc",p=r.createScriptProcessor||r.createJavaScriptNode,v="。由于"+l+"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"+l+"。",m=function(){h=n.isWorklet=!1,I(n),M("Connect采用老的"+s+"，"+(O[k]?"但已":"可")+"设置"+i+"."+k+"=true尝试启用"+l+v,3);var e=n._p=p.call(r,t,1,1);a.connect(e),e.connect(r.destination),e.onaudioprocess=function(e){o(e)}},h=n.isWorklet=!p||O[k],d=y.AudioWorkletNode;if(h&&r[l]&&d){var g,S=function(){return h&&n._na},_=n._na=function(){""!==g&&(clearTimeout(g),g=setTimeout(function(){g=0,M(l+"未返回任何音频，恢复使用"+s,3),S()&&p&&m()},500))},C=function(){if(S()){var e=n._n=new d(r,f,{processorOptions:{bufferSize:t}});a.connect(e),e.connect(r.destination),e.port.onmessage=function(e){g&&(clearTimeout(g),g=""),o(0,e.data.val)},M("Connect采用"+l+"方式，设置"+i+"."+k+"=false可恢复老式"+s+v,3)}};r.resume()[u&&"finally"](function(){if(S())if(r[f])C();else{var e,t,n=(t="class "+f+" extends AudioWorkletProcessor{",t+="constructor "+(e=function(e){return e.toString().replace(/^function|DEL_/g,"").replace(/\$RA/g,c)})(function(e){DEL_super(e);var t=this,n=e.processorOptions.bufferSize;t.bufferSize=n,t.buffer=new Float32Array(2*n),t.pos=0,t.port.onmessage=function(e){e.data.kill&&(t.kill=!0,console.log("$RA kill call"))},console.log("$RA .ctor call",e)}),t+="process "+e(function(e,t,n){var r=this,a=r.bufferSize,o=r.buffer,s=r.pos;if((e=(e[0]||[])[0]||[]).length){o.set(e,s);var i=~~((s+=e.length)/a)*a;if(i){this.port.postMessage({val:o.slice(0,i)});var c=o.subarray(i,s);(o=new Float32Array(2*a)).set(c),s=c.length,r.buffer=o}r.pos=s}return!r.kill}),t+='}try{registerProcessor("'+f+'", '+f+')}catch(e){console.error("'+c+'注册失败",e)}',"data:text/javascript;base64,"+btoa(unescape(encodeURIComponent(t))));r[l].addModule(n).then(function(e){S()&&(r[f]=1,C(),g&&_())})[u&&"catch"](function(e){M(l+".addModule失败",1,e),S()&&m()})}})}else m()},I=function(e){e._na=null,e._n&&(e._n.port.postMessage({kill:!0}),e._n.disconnect(),e._n=null)},g=function(e){var t=(e=e||O)==O,n=e.Stream;if(n&&(n._m&&(n._m.disconnect(),n._m=null),n._p&&(n._p.disconnect(),n._p.onaudioprocess=n._p=null),I(n),t)){for(var r=n.getTracks&&n.getTracks()||n.audioTracks||[],a=0;a<r.length;a++){var o=r[a];o.stop&&o.stop()}n.stop&&n.stop()}e.Stream=0};O.SampleData=function(e,t,n,r,a){r||(r={});var o=r.index||0,s=r.offset||0,i=r.frameNext||[];a||(a={});var c=a.frameSize||1;a.frameType&&(c="mp3"==a.frameType?1152:1);for(var f=0,u=o;u<e.length;u++)f+=e[u].length;f=Math.max(0,f-Math.floor(s));var l=t/n;1<l?f=Math.floor(f/l):(l=1,n=t),f+=i.length;for(var p=new Int16Array(f),v=0,u=0;u<i.length;u++)p[v]=i[u],v++;for(var m=e.length;o<m;o++){for(var h=e[o],u=s,d=h.length;u<d;){var g=Math.floor(u),S=Math.ceil(u),_=u-g,C=h[g],y=S<d?h[S]:(e[o+1]||[C])[0]||0;p[v]=C+(y-C)*_,v++,u+=l}s=u-d}i=null;var k=p.length%c;if(0<k){var I=2*(p.length-k);i=new Int16Array(p.buffer.slice(I)),p=new Int16Array(p.buffer.slice(0,I))}return{index:o,offset:s,frameNext:i,sampleRate:n,data:p}},O.PowerLevel=function(e,t){var n=e/t||0;return n<1251?Math.round(n/1250*10):Math.round(Math.min(100,Math.max(0,100*(1+Math.log(n/1e4)/Math.log(10)))))};var M=function(e,t){var n=new Date,r=("0"+n.getMinutes()).substr(-2)+":"+("0"+n.getSeconds()).substr(-2)+"."+("00"+n.getMilliseconds()).substr(-3),a=this&&this.envIn&&this.envCheck&&this.id,o=["["+r+" Recorder"+(a?":"+a:"")+"]"+e],s=arguments,i=y.console||{},c=2,f=i.log;for("number"==typeof t?f=1==t?i.error:3==t?i.warn:f:c=1;c<s.length;c++)o.push(s[c]);u?f&&f("[IsLoser]"+o[0],1<o.length?o:""):f.apply(i,o)},u=!0;try{u=!console.log.apply}catch(e){}O.CLog=M;var r=0;function t(e){this.id=++r,O.Traffic&&O.Traffic();var t={type:"mp3",bitRate:16,sampleRate:16e3,onProcess:h};for(var n in e)t[n]=e[n];this.set=t,this._S=9,this.Sync={O:9,C:9}}O.Sync={O:9,C:9},O.prototype=t.prototype={CLog:M,_streamStore:function(){return this.set.sourceStream?this:O},open:function(e,n){var r=this,t=r._streamStore();e=e||h;var a=function(e,t){t=!!t,r.CLog("录音open失败："+e+",isUserNotAllow:"+t,1),n&&n(e,t)},o=function(){r.CLog("open ok id:"+r.id),e(),r._SO=0},s=t.Sync,i=++s.O,c=s.C;r._O=r._O_=i,r._SO=r._S;var f=function(){if(c!=s.C||!r._O){var e="open被取消";return i==s.O?r.close():e="open被中断",a(e),!0}},u=r.envCheck({envName:"H5",canProcess:!0});if(u)a("不能录音："+u);else if(r.set.sourceStream){if(!O.Support())return void a("不支持此浏览器从流中获取录音");g(t),r.Stream=r.set.sourceStream,r.Stream._call={};try{d(t)}catch(e){return void a("从流中打开录音失败："+e.message)}o()}else{var l=function(e,t){try{y.top.a}catch(e){return void a('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)?a("用户拒绝了录音权限",!0):!1===y.isSecureContext?a("无权录音(需https)"):/Found/i.test(e)?a(t+"，无可用麦克风"):a(t)};if(O.IsOpen())o();else if(O.Support()){var p=function(e){(O.Stream=e)._call={},f()||setTimeout(function(){f()||(O.IsOpen()?(d(),o()):a("录音功能无效：无音频流"))},100)},v=function(e){var t=e.name||e.message||e.code+":"+e;r.CLog("请求录音权限错误",1,e),l(t,"无法录音："+t)},m=O.Scope.getUserMedia({audio:r.set.audioTrackSet||!0},p,v);m&&m.then&&m.then(p)[e&&"catch"](v)}else l("","此浏览器不支持录音")}},close:function(e){e=e||h;var t=this,n=t._streamStore();t._stop();var r=n.Sync;if(t._O=0,t._O_!=r.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();r.C++,g(n),t.CLog("close"),e()},mock:function(e,t){var n=this;return n._stop(),n.isMock=1,n.mockEnvInfo=null,n.buffers=[e],n.recSize=e.length,n.srcSampleRate=t,n},envCheck:function(e){var t,n=this.set;return t||(this[n.type+"_envCheck"]?t=this[n.type+"_envCheck"](e,n):n.takeoffEncodeChunk&&(t=n.type+"类型不支持设置takeoffEncodeChunk")),t||""},envStart:function(e,t){var n=this,r=n.set;if(n.isMock=e?1:0,n.mockEnvInfo=e,n.buffers=[],n.recSize=0,n.envInLast=0,n.envInFirst=0,n.envInFix=0,n.envInFixTs=[],r.sampleRate=Math.min(t,r.sampleRate),n.srcSampleRate=t,n.engineCtx=0,n[r.type+"_start"]){var a=n.engineCtx=n[r.type+"_start"](r);a&&(a.pcmDatas=[],a.pcmSize=0)}},envResume:function(){this.envInFixTs=[]},envIn:function(e,t){var a=this,o=a.set,s=a.engineCtx,n=a.srcSampleRate,r=e.length,i=O.PowerLevel(t,r),c=a.buffers,f=c.length;c.push(e);var u=c,l=f,p=Date.now(),v=Math.round(r/n*1e3);a.envInLast=p,1==a.buffers.length&&(a.envInFirst=p-v);var m=a.envInFixTs;m.splice(0,0,{t:p,d:v});for(var h=p,d=0,g=0;g<m.length;g++){var S=m[g];if(3e3<p-S.t){m.length=g;break}h=S.t,d+=S.d}var _=m[1],C=p-h;if(C/3<C-d&&(_&&1e3<C||6<=m.length)){var y=p-_.t-v;if(v/5<y){var k=!o.disableEnvInFix;if(a.CLog("["+p+"]"+(k?"":"未")+"补偿"+y+"ms",3),a.envInFix+=y,k){var I=new Int16Array(y*n/1e3);r+=I.length,c.push(I)}}}var M=a.recSize,x=r,b=M+x;if(a.recSize=b,s){var R=O.SampleData(c,n,o.sampleRate,s.chunkInfo);s.chunkInfo=R,b=(M=s.pcmSize)+(x=R.data.length),s.pcmSize=b,c=s.pcmDatas,f=c.length,c.push(R.data),n=R.sampleRate}var w=Math.round(b/n*1e3),L=c.length,T=u.length,z=function(){for(var e=A?0:-x,t=null==c[0],n=f;n<L;n++){var r=c[n];null==r?t=1:(e+=r.length,s&&r.length&&a[o.type+"_encode"](s,r))}if(t&&s)for(n=l,u[0]&&(n=0);n<T;n++)u[n]=null;t&&(e=A?x:0,c[0]=null),s?s.pcmSize+=e:a.recSize+=e},A=o.onProcess(c,i,w,n,f,z);if(!0===A){var D=0;for(g=f;g<L;g++)null==c[g]?D=1:c[g]=new Int16Array(0);D?a.CLog("未进入异步前不能清除buffers",3):s?s.pcmSize-=x:a.recSize-=x}else z()},start:function(){var e=this,t=O.Ctx,n=1;if(e.set.sourceStream?e.Stream||(n=0):O.IsOpen()||(n=0),n)if(e.CLog("开始录音"),e._stop(),e.state=0,e.envStart(null,t.sampleRate),e._SO&&e._SO+1!=e._S)e.CLog("start被中断",3);else{e._SO=0;var r=function(){e.state=1,e.resume()};"suspended"==t.state?(e.CLog("wait ctx resume..."),e.state=3,t.resume().then(function(){e.CLog("ctx resume"),3==e.state&&r()})):r()}else e.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,n=this;if(n.state){n.state=1,n.CLog("resume"),n.envResume();var t=n._streamStore();t.Stream._call[n.id]=function(e,t){1==n.state&&n.envIn(e,t)},(e=(t||O).Stream)._na&&e._na()}},_stop:function(e){var t=this,n=t.set;t.isMock||t._S++,t.state&&(t.pause(),t.state=0),!e&&t[n.type+"_stop"]&&(t[n.type+"_stop"](t.engineCtx),t.engineCtx=0)},stop:function(n,t,e){var r,a=this,o=a.set;a.CLog("stop "+(a.envInLast?a.envInLast-a.envInFirst+"ms 补"+a.envInFix+"ms":"-"));var s=function(){a._stop(),e&&a.close()},i=function(e){a.CLog("结束录音失败："+e,1),t&&t(e),s()},c=function(e,t){if(a.CLog("结束录音 编码"+(Date.now()-r)+"ms 音频"+t+"ms/"+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 i("生成的"+o.type+"无效");n&&n(e,t),s()};if(!a.isMock){var f=3==a.state;if(!a.state||f)return void i("未开始录音"+(f?"，开始录音前无用户交互导致AudioContext未运行":""));a._stop(!0)}var u=a.recSize;if(u)if(a.buffers[0])if(a[o.type]){if(a.isMock){var l=a.envCheck(a.mockEnvInfo||{envName:"mock",canProcess:!1});if(l)return void i("录音错误："+l)}var p=a.engineCtx;if(a[o.type+"_complete"]&&p){var v=Math.round(p.pcmSize/o.sampleRate*1e3);return r=Date.now(),void a[o.type+"_complete"](p,function(e){c(e,v)},i)}r=Date.now();var m=O.SampleData(a.buffers,a.srcSampleRate,o.sampleRate);o.sampleRate=m.sampleRate;var h=m.data;v=Math.round(h.length/o.sampleRate*1e3),a.CLog("采样"+u+"->"+h.length+" 花:"+(Date.now()-r)+"ms"),setTimeout(function(){r=Date.now(),a[o.type](h,function(e){c(e,v)},function(e){i(e)})})}else i("未加载"+o.type+"编码器");else i("音频buffers被释放");else i("未采集到录音")}},y.Recorder&&y.Recorder.Destroy(),(y.Recorder=O).LM="2022-03-05 11:53:19",O.TrafficImgUrl="//ia.51.la/go1?id=20469973&pvFlag=1",O.Traffic=function(){var e=O.TrafficImgUrl;if(e){var t=O.Traffic,n=location.href.replace(/#.*/,"");if(0==e.indexOf("//")&&(e=/^https:/i.test(n)?"https:"+e:"http:"+e),!t[n]){t[n]=1;var r=new Image;r.src=e,M("Traffic Analysis Image: Recorder.TrafficImgUrl="+O.TrafficImgUrl)}}}}(window),"function"==typeof define&&define.amd&&define(function(){return Recorder}),"object"==typeof module&&module.exports&&(module.exports=Recorder),function(){"use strict";Recorder.prototype.enc_wav={stable:!0,testmsg:"支持位数8位、16位（填在比特率里面），采样率取值无限制"},Recorder.prototype.wav=function(e,t,n){var r=this.set,a=e.length,o=r.sampleRate,s=8==r.bitRate?8:16,i=a*(s/8),c=new ArrayBuffer(44+i),f=new DataView(c),u=0,l=function(e){for(var t=0;t<e.length;t++,u++)f.setUint8(u,e.charCodeAt(t))},p=function(e){f.setUint16(u,e,!0),u+=2},v=function(e){f.setUint32(u,e,!0),u+=4};if(l("RIFF"),v(36+i),l("WAVE"),l("fmt "),v(16),p(1),p(1),v(o),v(o*(s/8)),p(s/8),p(s),l("data"),v(i),8==s)for(var m=0;m<a;m++,u++){var h=128+(e[m]>>8);f.setInt8(u,h,!0)}else for(m=0;m<a;m++,u+=2)f.setInt16(u,e[m],!0);t(new Blob([f.buffer],{type:"audio/wav"}))}}();