(function (exports) {
var MP3Recorder = function (config) {
var recorder = this;
config = config || {};
config.sampleRate = config.sampleRate || 48000;
config.bitRate = config.bitRate || 128;
var recordCount=0;
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(0, 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);
//ws.send(array.buffer);
realTimeWorker.postMessage({ cmd: 'encode', buf: array});
};
var realTimeWorker = new Worker('app/audio/worker-realtime.js');
//var wsinit = 0;
//var ws;
realTimeWorker.onmessage = function (e) {
switch (e.data.cmd) {
case 'init':
log('初始化成功');
if (config.funOk) {
config.funOk();
}
break;
case 'encode':
//let blob = new Blob(e.data.buf, {type: 'audio/mp3'});
//ws.send(blob);
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');
}
}
recorder.addWorker = function (index,url) {
if(recordCount===0)
this.start();
realTimeWorker.postMessage({cmd:"add",buf:{index:index,url:url}});
recordCount++;
}
recorder.stopWorker = function (index) {
realTimeWorker.postMessage({cmd:"reduce",buf:{index:index}});
recordCount--;
if(recordCount===0)
this.stop();
}
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);
this.audioRecorder = new MP3Recorder({
debug: true,
funOk: function () {
resolve();
console.log('初始化成功');
},
funCancel: function (msg) {
console.log(msg);
recorder = null;
}
});
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