这篇文章主要为大家详细介绍了vue使用recorder.js实现录音功能，文中示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
关于vue使用recorder.js录音功能，供大家参考，具体内容如下
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1， 引入外部js文件
import { HZRecorder} from ‘…/…/utils/HZRecorder.js';
js文件内容
export function HZRecorder(stream, config) { config = config || {}; config.sampleBits = config.sampleBits || 16; //采样数位 8, 16 config.sampleRate = config.sampleRate || 16000; //采样率16khz var context = new (window.webkitAudioContext || window.AudioContext)(); var audioInput = context.createMediaStreamSource(stream); var createScript = context.createScriptProcessor || context.createJavaScriptNode; var recorder = createScript.apply(context, [4096, 1, 1]); var audioData = { size: 0 //录音文件长度 , buffer: [] //录音缓存 , inputSampleRate: context.sampleRate //输入采样率 , inputSampleBits: 16 //输入采样数位 8, 16 , outputSampleRate: config.sampleRate //输出采样率 , oututSampleBits: config.sampleBits //输出采样数位 8, 16 , input: function (data) { this.buffer.push(new Float32Array(data)); this.size += data.length; } , compress: function () { //合并压缩 //合并 var data = new Float32Array(this.size); var offset = 0; for (var i = 0; i <this.buffer.length; i++) { data.set(this.buffer[i], offset); offset += this.buffer[i].length; } //压缩 var compression = parseInt(this.inputSampleRate / this.outputSampleRate); var length = data.length / compression; var result = new Float32Array(length); var index = 0, j = 0; while (index <length) { result[index] = data[j]; j += compression; index++; } return result; } , encodeWAV: function () { var sampleRate = Math.min(this.inputSampleRate, this.outputSampleRate); var sampleBits = Math.min(this.inputSampleBits, this.oututSampleBits); var bytes = this.compress(); var dataLength = bytes.length * (sampleBits / 8); var buffer = new ArrayBuffer(44 + dataLength); var data = new DataView(buffer); var channelCount = 1;//单声道 var offset = 0; var writeString = function (str) { for (var i = 0; i <str.length; i++) { data.setUint8(offset + i, str.charCodeAt(i)); } } // 资源交换文件标识符 writeString('RIFF'); offset += 4; // 下个地址开始到文件尾总字节数,即文件大小-8 data.setUint32(offset, 36 + dataLength, true); offset += 4; // WAV文件标志 writeString('WAVE'); offset += 4; // 波形格式标志 writeString('fmt '); offset += 4; // 过滤字节,一般为 0x10 = 16 data.setUint32(offset, 16, true); offset += 4; // 格式类别 (PCM形式采样数据) data.setUint16(offset, 1, true); offset += 2; // 通道数 data.setUint16(offset, channelCount, true); offset += 2; // 采样率,每秒样本数,表示每个通道的播放速度 data.setUint32(offset, sampleRate, true); offset += 4; // 波形数据传输率 (每秒平均字节数) 单声道×每秒数据位数×每样本数据位/8 data.setUint32(offset, channelCount * sampleRate * (sampleBits / 8), true); offset += 4; // 快数据调整数 采样一次占用字节数 单声道×每样本的数据位数/8 data.setUint16(offset, channelCount * (sampleBits / 8), true); offset += 2; // 每样本数据位数 data.setUint16(offset, sampleBits, true); offset += 2; // 数据标识符 writeString('data'); offset += 4; // 采样数据总数,即数据总大小-44 data.setUint32(offset, dataLength, true); offset += 4; // 写入采样数据 if (sampleBits === 8) { for (var i = 0; i <bytes.length; i++, offset++) { var s = Math.max(-1, Math.min(1, bytes[i])); var val = s 2、vue组件的mount中初始化调用麦克风工具
mounted() { this.$nextTick(() => { try { window.AudioContext = window.AudioContext || window.webkitAudioContext; navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia; window.URL = window.URL || window.webkitURL; audio_context = new AudioContext; console.log('navigator.getUserMedia ' + (navigator.getUserMedia ? 'available.' : 'not present!')); } catch (e) { alert('No web audio support in this browser!'); } navigator.getUserMedia({audio: true}, function (stream) { recorder = new HZRecorder(stream) console.log('初始化完成'); }, function(e) { console.log('No live audio input: ' + e); }); }) },
3、methods 调用
readyOriginal () { if (!this.isVoice) { recorder && recorder.start(); this.isVoice = true } else { this.isVoice = false recorder && recorder.stop(); setTimeout(()=> { var mp3Blob = recorder.upload(); var fd = new FormData(); fd.append('audio', mp3Blob); this.$http({ header: ({ 'Content-Type': 'application/x-www-form-urlencodeed' }), method: 'POST', url: 'url', data: fd, withCredentials: true, }).then((res) => { // 这里做登录拦截 if (res.data.isLogin === false) { router.replace('/login'); } else { if (res.data.status === 200) { console.log('保存成功') } else { this.returnmsg = '上传失败' } } }) },1000) } },
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