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- function t(t,a,i){for(var o=0;o<i.length;o++)t.setUint8(a+o,i.charCodeAt(o))}function a(a,i,o){var e=function(a,i,o,e,s){var u=a.reduce((function(t,a){return t+a.byteLength}),0),n=new ArrayBuffer(44+u),r=new DataView(n),h=o,d=0;return t(r,d,"RIFF"),d+=4,r.setUint32(d,36+u,!0),t(r,d+=4,"WAVE"),t(r,d+=4,"fmt "),d+=4,r.setUint32(d,16,!0),d+=4,r.setUint16(d,1,!0),d+=2,r.setUint16(d,h,!0),d+=2,r.setUint32(d,i,!0),d+=4,r.setUint32(d,h*i*(e/8),!0),d+=4,r.setUint16(d,h*(e/8),!0),d+=2,r.setUint16(d,e,!0),t(r,d+=2,"data"),d+=4,r.setUint32(d,u,!0),d+=4,a.forEach((function(t){for(var a=new DataView(t.buffer),i=0;i<t.byteLength;)r.setUint8(d,a.getUint8(i)),d++,i++})),r}(a,i||16e3,1,o||16);return new Blob([e],{type:"audio/wav"})}var i=function(){function t(t){this.toSampleRate=22050,this.resumePlayDuration=1e3,this.fromSampleRate=16e3,this.isAudioDataEnded=!1,this.status="uninit",this.audioDatas=[],this.pcmAudioDatas=[],this.audioDataOffset=0,this.processor=new Worker("".concat(t,"/processor.worker.js"))}return t.prototype.postMessage=function(t){var a=t.type,i=t.data,o=t.isLastData;"uninit"!==this.status&&(this.processor.postMessage({type:a,data:i}),this.isAudioDataEnded=o)},t.prototype.playAudio=function(){var t=this;if(clearTimeout(this.playAudioTime),this.audioContext){for(var a=0,i=this.audioDataOffset;i<this.audioDatas.length;i++)a+=this.audioDatas[i].length;if(!a)return void("play"===this.status&&(this.isAudioDataEnded||this.resumePlayDuration<=0?this.stop():this.playAudioTime=setTimeout((function(){t.playAudio()}),this.resumePlayDuration)));for(var o=this.audioContext.createBuffer(1,a,this.toSampleRate),e=o.getChannelData(0),s=this.audioDatas[this.audioDataOffset],u=0;s;){if(this.audioDataOffset+=1,o.copyToChannel)o.copyToChannel(s,0,u),u+=s.length;else for(i=0;i<s.length;i++)e[i]=s[i];s=this.audioDatas[this.audioDataOffset]}var n=this.audioContext.createBufferSource();this.bufferSource=n,n.buffer=o,n.connect(this.audioContext.destination),n.start(),n.onended=function(a){"play"===t.status&&(t.audioDatas.length?t.playAudio():t.isAudioDataEnded||t.resumePlayDuration<=0?t.stop():t.playAudioTime=setTimeout((function(){t.playAudio()}),t.resumePlayDuration))}}},t.prototype.reset=function(){var t;this.processor.onmessage=null,this.audioDataOffset=0,this.audioDatas=[],this.pcmAudioDatas=[],this.status="uninit",this.isAudioDataEnded=!1,clearTimeout(this.playAudioTime);try{null===(t=this.bufferSource)||void 0===t||t.stop()}catch(t){console.log(t)}},t.prototype.start=function(t){var a=this,i=void 0===t?{}:t,o=i.autoPlay,e=void 0===o||o,s=i.sampleRate,u=void 0===s?16e3:s,n=i.resumePlayDuration,r=void 0===n?1e3:n;this.reset(),this.status="init",this.resumePlayDuration=r;var h=u,d=Math.max(h,22050);d=Math.min(d,96e3),this.fromSampleRate=h,this.toSampleRate=d,this.processor.postMessage({type:"init",data:{fromSampleRate:h,toSampleRate:d}}),this.processor.onmessage=function(t){var i=t.data,o=i.audioData,s=i.pcmAudioData;a.audioDatas.push(o),a.pcmAudioDatas.push(s),1===a.audioDatas.length&&e&&"init"===a.status&&a.play()}},t.prototype.play=function(){var t;this.audioContext||(this.audioContext=new(window.AudioContext||window.webkitAudioContext),this.audioContext.resume()),this.audioContext&&(this.status="play",null===(t=this.onPlay)||void 0===t||t.call(this),this.playAudio())},t.prototype.stop=function(){var t,a;this.audioDataOffset=0,this.status="stop",clearTimeout(this.playAudioTime);try{null===(t=this.bufferSource)||void 0===t||t.stop(),null===(a=this.onStop)||void 0===a||a.call(this,this.audioDatas)}catch(t){console.log(t)}},t.prototype.getAudioDataBlob=function(t){var i,o;if(null===(i=this.pcmAudioDatas)||void 0===i?void 0:i.length)return"wav"===t?a(this.pcmAudioDatas,this.fromSampleRate,16):(o=this.pcmAudioDatas,new Blob(o,{type:"audio/pcm"}))},t}();export{i as default};
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