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使用纯JavaScript在Html5网页中录制MP3音频
资源介绍
Html5网页纯JavaScript录制MP3音频
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Html5网页JavaScript录制MP3音频</title>
<meta charset="utf-8" />
</head>
<body>
'; } function funUpload() { var fd = new FormData(); var mp3Name = encodeURIComponent('audio_recording_' + new Date().getTime() + '.mp3'); fd.append('mp3Name', mp3Name); fd.append('file', mp3Blob); var xhr = new XMLHttpRequest(); xhr.onreadystatechange = function () { if (xhr.readyState == 4 && xhr.status == 200) { recordingslist[removed] += '上传成功：' + mp3Name + ''; } }; xhr.open('POST', 'upload.ashx'); xhr.send(fd); } [removed] </body> </html> [javascript] view plain copy 在CODE上查看代码片派生到我的代码片 (function (exports) { var MP3Recorder = function (config) { var recorder = this; config = config || {}; config.sampleRate = config.sampleRate || 44100; config.bitRate = config.bitRate || 128; navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia; if (navigator.getUserMedia) { navigator.getUserMedia({ audio: true }, function (stream) { var context = new AudioContext(), microphone = context.createMediaStreamSource(stream), processor = context.createScriptProcessor(16384, 1, 1),//bufferSize大小，输入channel数，输出channel数 mp3ReceiveSuccess, currentErrorCallback; config.sampleRate = context.sampleRate; processor.onaudioprocess = function (event) { //边录音边转换 var array = event.inputBuffer.getChannelData(0); realTimeWorker.postMessage({ cmd: 'encode', buf: array }); }; var realTimeWorker = new Worker('js/worker-realtime.js'); realTimeWorker.onmessage = function (e) { switch (e.data.cmd) { case 'init': log('初始化成功'); if (config.funOk) { config.funOk(); } break; case 'end': log('MP3大小：', e.data.buf.length); if (mp3ReceiveSuccess) { mp3ReceiveSuccess(new Blob(e.data.buf, { type: 'audio/mp3' })); } break; case 'error': log('错误信息：' + e.data.error); if (currentErrorCallback) { currentErrorCallback(e.data.error); } break; default: log('未知信息：', e.data); } }; recorder.getMp3Blob = function (onSuccess, onError) { currentErrorCallback = onError; mp3ReceiveSuccess = onSuccess; realTimeWorker.postMessage({ cmd: 'finish' }); }; recorder.start = function () { if (processor && microphone) { microphone.connect(processor); processor.connect(context.destination); log('开始录音'); } } recorder.stop = function () { if (processor && microphone) { microphone.disconnect(); processor.disconnect(); log('录音结束'); } } realTimeWorker.postMessage({ cmd: 'init', config: { sampleRate: config.sampleRate, bitRate: config.bitRate } }); }, function (error) { var msg; switch (error.code || error.name) { case 'PERMISSION_DENIED': case 'PermissionDeniedError': msg = '用户拒绝访问麦客风'; break; case 'NOT_SUPPORTED_ERROR': case 'NotSupportedError': msg = '浏览器不支持麦客风'; break; case 'MANDATORY_UNSATISFIED_ERROR': case 'MandatoryUnsatisfiedError': msg = '找不到麦客风设备'; break; default: msg = '无法打开麦克风，异常信息:' + (error.code || error.name); break; } if (config.funCancel) { config.funCancel(msg); } }); } else { if (config.funCancel) { config.funCancel('当前浏览器不支持录音功能'); } } function log(str) { if (config.debug) { console.log(str); } } } exports.MP3Recorder = MP3Recorder; })(window);
Html5网页JavaScript录制MP3音频
调试信息：
[removed][removed] [removed] var recorder = new MP3Recorder({ debug:true, funOk: function () { btnStart.disabled = false; log('初始化成功'); }, funCancel: function (msg) { log(msg); recorder = null; } }); var mp3Blob; function funStart(button) { btnStart.disabled = true; btnStop.disabled = false; btnUpload.disabled = true; log('录音开始...'); recorder.start(); } function funStop(button) { recorder.stop(); btnStart.disabled = false; btnStop.disabled = true; btnUpload.disabled = false; log('录音结束，MP3导出中...'); recorder.getMp3Blob(function (blob) { log('MP3导出成功'); mp3Blob = blob; var url = URL.createObjectURL(mp3Blob); var div = document.createElement('div'); var au = document.createElement('audio'); var hf = document.createElement('a'); au.controls = true; au.src = url; hf.href = url; hf.download = new Date().toISOString() + '.mp3'; hf[removed] = hf.download; div.appendChild(au); div.appendChild(hf); recordingslist.appendChild(div); }); } function log(str) { recordingslist[removed] += str + ''; } function funUpload() { var fd = new FormData(); var mp3Name = encodeURIComponent('audio_recording_' + new Date().getTime() + '.mp3'); fd.append('mp3Name', mp3Name); fd.append('file', mp3Blob); var xhr = new XMLHttpRequest(); xhr.onreadystatechange = function () { if (xhr.readyState == 4 && xhr.status == 200) { recordingslist[removed] += '上传成功：' + mp3Name + ''; } }; xhr.open('POST', 'upload.ashx'); xhr.send(fd); } [removed] </body> </html> [javascript] view plain copy 在CODE上查看代码片派生到我的代码片 (function (exports) { var MP3Recorder = function (config) { var recorder = this; config = config || {}; config.sampleRate = config.sampleRate || 44100; config.bitRate = config.bitRate || 128; navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia; if (navigator.getUserMedia) { navigator.getUserMedia({ audio: true }, function (stream) { var context = new AudioContext(), microphone = context.createMediaStreamSource(stream), processor = context.createScriptProcessor(16384, 1, 1),//bufferSize大小，输入channel数，输出channel数 mp3ReceiveSuccess, currentErrorCallback; config.sampleRate = context.sampleRate; processor.onaudioprocess = function (event) { //边录音边转换 var array = event.inputBuffer.getChannelData(0); realTimeWorker.postMessage({ cmd: 'encode', buf: array }); }; var realTimeWorker = new Worker('js/worker-realtime.js'); realTimeWorker.onmessage = function (e) { switch (e.data.cmd) { case 'init': log('初始化成功'); if (config.funOk) { config.funOk(); } break; case 'end': log('MP3大小：', e.data.buf.length); if (mp3ReceiveSuccess) { mp3ReceiveSuccess(new Blob(e.data.buf, { type: 'audio/mp3' })); } break; case 'error': log('错误信息：' + e.data.error); if (currentErrorCallback) { currentErrorCallback(e.data.error); } break; default: log('未知信息：', e.data); } }; recorder.getMp3Blob = function (onSuccess, onError) { currentErrorCallback = onError; mp3ReceiveSuccess = onSuccess; realTimeWorker.postMessage({ cmd: 'finish' }); }; recorder.start = function () { if (processor && microphone) { microphone.connect(processor); processor.connect(context.destination); log('开始录音'); } } recorder.stop = function () { if (processor && microphone) { microphone.disconnect(); processor.disconnect(); log('录音结束'); } } realTimeWorker.postMessage({ cmd: 'init', config: { sampleRate: config.sampleRate, bitRate: config.bitRate } }); }, function (error) { var msg; switch (error.code || error.name) { case 'PERMISSION_DENIED': case 'PermissionDeniedError': msg = '用户拒绝访问麦客风'; break; case 'NOT_SUPPORTED_ERROR': case 'NotSupportedError': msg = '浏览器不支持麦客风'; break; case 'MANDATORY_UNSATISFIED_ERROR': case 'MandatoryUnsatisfiedError': msg = '找不到麦客风设备'; break; default: msg = '无法打开麦克风，异常信息:' + (error.code || error.name); break; } if (config.funCancel) { config.funCancel(msg); } }); } else { if (config.funCancel) { config.funCancel('当前浏览器不支持录音功能'); } } function log(str) { if (config.debug) { console.log(str); } } } exports.MP3Recorder = MP3Recorder; })(window);
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