Open AnnGreen1 opened 2 months ago
重要的事情说三遍:要在https下才能实现! 要在https下才能实现!! 要在https下才能实现!!! 我当时就是忽略了这个点折腾了很久,最后根据这篇文章:Vue.js实战——封装浏览器录音组件_6,实现了录音功能。 因为本地是http,不能看到效果,建议使用【whistle】强大的web调试代理工具来进行代理本地,随时查看修改的效果
因为原文章不能抛出录音失败的错误,所以在此基础修改下
//recorder.js export default class Recorder { constructor(stream, config) { //兼容 window.URL = window.URL || window.webkitURL; navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia; config = config || {}; config.sampleBits = config.sampleBits || 16; //采样数位 8, 16 config.sampleRate = config.sampleRate || 8000; //采样率(1/6 44100) this.context = new (window.webkitAudioContext || window.AudioContext)(); this.audioInput = this.context.createMediaStreamSource(stream); this.createScript = this.context.createScriptProcessor || this.context.createJavaScriptNode; this.recorder = this.createScript.apply(this.context, [4096, 1, 1]); this.audioData = { size: 0, //录音文件长度 buffer: [], //录音缓存 inputSampleRate: this.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 let data = new Float32Array(this.size); let offset = 0; for (let i = 0; i < this.buffer.length; i++) { data.set(this.buffer[i], offset); offset += this.buffer[i].length; } //压缩 let compression = parseInt(this.inputSampleRate / this.outputSampleRate); let length = data.length / compression; let result = new Float32Array(length); let index = 0, j = 0; while (index < length) { result[index] = data[j]; j += compression; index++; } return result; }, encodeWAV: function () { let sampleRate = Math.min(this.inputSampleRate, this.outputSampleRate); let sampleBits = Math.min(this.inputSampleBits, this.oututSampleBits); let bytes = this.compress(); let dataLength = bytes.length * (sampleBits / 8); let buffer = new ArrayBuffer(44 + dataLength); let data = new DataView(buffer); let channelCount = 1;//单声道 let offset = 0; let writeString = function (str) { for (let 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 (let i = 0; i < bytes.length; i++ , offset++) { let s = Math.max(-1, Math.min(1, bytes[i])); let val = s < 0 ? s * 0x8000 : s * 0x7FFF; val = parseInt(255 / (65535 / (val + 32768))); data.setInt8(offset, val, true); } } else { for (let i = 0; i < bytes.length; i++ , offset += 2) { let s = Math.max(-1, Math.min(1, bytes[i])); data.setInt16(offset, s < 0 ? s * 0x8000 : s * 0x7FFF, true); } } return new Blob([data], { type: 'audio/wav' }); } }; } //开始录音 start () { this.audioInput.connect(this.recorder); this.recorder.connect(this.context.destination); //音频采集 let self = this; this.recorder.onaudioprocess = function (e) { self.audioData.input(e.inputBuffer.getChannelData(0)); }; }; //停止 stop () { this.recorder.disconnect(); }; //获取音频文件 getBlob () { this.stop(); return this.audioData.encodeWAV(); }; //回放 play (audio) { audio.src = window.URL.createObjectURL(this.getBlob()); }; //清理缓存的录音数据 clear (audio) { this.audioData.buffer = []; this.audioData.size = 0; audio.src = '' }; static checkError (e) { const { name } = e; let errorMsg = '' switch (name) { case 'AbortError': errorMsg = '录音设备无法被使用'; break; case 'NotAllowedError': errorMsg = '用户已禁止网页调用录音设备'; break; case 'PermissionDeniedError': errorMsg = '用户已禁止网页调用录音设备'; break; // 用户拒绝 case 'NotFoundError': errorMsg = '录音设备未找到'; break; case 'DevicesNotFoundError': errorMsg = '录音设备未找到'; break; case 'NotReadableError': errorMsg = '录音设备无法使用'; break; case 'NotSupportedError': errorMsg = '不支持录音功能'; break; case 'MandatoryUnsatisfiedError': errorMsg = '无法发现指定的硬件设备'; break; default: errorMsg = '录音调用错误'; break; } return { error: errorMsg } }; static get (callback, config) { if (callback) { if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) { navigator.mediaDevices.getUserMedia({ audio: true, video: false }).then((stream) => { let rec = new Recorder(stream, config); callback(rec); }).catch((e) => { callback(Recorder.checkError(e)); }) } else { navigator.getUserMedia({ audio: true, video: false }).then((stream) => { let rec = new Recorder(stream, config); callback(rec); }).catch((e) => { // Recorder.checkError(e) callback(Recorder.checkError(e)); }) } } }; }
//record-sdk.js import Recorder from "./recorder"; export default class Record { startRecord (param) { let self = this; try { Recorder.get(rec => { if (rec.error) return param.error(rec.error); self.recorder = rec; self.recorder.start(); param.success("开始录音"); }) } catch (e) { param.error("开始录音失败" + e); } } stopRecord (param) { let self = this; try { let blobData = self.recorder.getBlob(); param.success(blobData); } catch (e) { param.error("结束录音失败" + e); } } play (audio) { let self = this; try { self.recorder.play(audio); } catch (e) { console.error("录音播放失败" + e); } } clear (audio) { let self = this; try { self.recorder.clear(audio); } catch (e) { console.error("清空录音失败" + e); } } }
//voice.vue ... <div class="record"> <h1>{{tipMsg}}</h1> <button @click="onStartVoice">开始</button> <button @click="onEndVoice">结束</button> <button @click="onPlayAudio">播放</button> <div class="record-play" v-show="isFinished"> <h2>Current voice player is:</h2> <audio id="audioVoice" controls autoplay></audio> </div> </div> ... <script> import Record from '@/plugins/recorder/record-sdk'; export default { data () { return { isVoice: false, isFinished: false, tipMsg: '录音', audio: "", recorder: new Record() } }, methods: { // 开始录音 onStartVoice () { this.onStopAudio() this.isFinished = false; this.recorder.startRecord({ success: res => { this.isVoice = true }, error: e => { this.isVoice = false this.$toast(e) } }); }, // 结束录音 onEndVoice () { this.isFinished = false; this.recorder.stopRecord({ success: res => { this.isVoice = false //此处可以获取音频源文件(res),用于上传等操作 console.log('音频源文件', res) }, error: e => { this.isVoice = false } }); }, // 播放录音 onPlayAudio () { this.isVoice = false this.isFinished = true; this.audio = document.getElementById("audioVoice"); this.recorder.play(this.audio); }, // 停止播放录音 onStopAudio () { this.recorder.clear(this.audio); } } } </script>
因为项目可能要实现语音录菜功能,便提前看下h5是否可以录音,如果后期真要实现语音录菜功能,,再来更新
作者:北极星丶超帅的 链接:https://www.jianshu.com/p/f5637e838af0 来源:简书 著作权归作者所有。商业转载请联系作者获得授权,非商业转载请注明出处。
因为原文章不能抛出录音失败的错误,所以在此基础修改下
因为项目可能要实现语音录菜功能,便提前看下h5是否可以录音,如果后期真要实现语音录菜功能,,再来更新
作者:北极星丶超帅的 链接:https://www.jianshu.com/p/f5637e838af0 来源:简书 著作权归作者所有。商业转载请联系作者获得授权,非商业转载请注明出处。