js实现录⾳上传功能
本⽂实例为⼤家分享了js代码实现录⾳上传，供⼤家参考，具体内容如下
1.html页⾯
2.Recorder.js内容
3.flask写法
1.html页⾯
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title id="title"></title>
</head>
<body>
<audio id="player" autoplay controls></audio>
<p>
<button onclick="start_reco()">开始录⾳</button>
</p>
<p>
<button onclick="ai_reco()" >发送语⾳指令</button>
</p>
</body>
<script type="application/javascript" src="/static/jquery-3.3.1.min.js"></script>
<script type="text/javascript" src="/static/Recorder.js"></script>
<script type="application/javascript">
var reco = null;
var audio_context = new AudioContext();//⾳频内容对象
navigator.webkitGetUserMedia ||
navigator.msGetUserMedia); // 兼容其他浏览器
console.log(err)
});
function create_stream(user_media) {
var stream_input = ateMediaStreamSource(user_media);
reco = new Recorder(stream_input);
}
function start_reco() {
}
function ai_reco() {
reco.stop();
console.log(wav_file);
var formdata = new FormData(); // form 表单 {key:value}
formdata.append("audio", wav_file); // form input type="file"
$.ajax({
url: "/receive_audio",
type: 'post',
processData: false,
contentType: false,
data: formdata,
dataType: 'json',
success: function (data) {
console.log(data);
}
})
});
reco.clear();
}
</script>
</html>
2.Recorder.js内容
直接复制保存即可
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){ports=f()}else if(typ
eof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typ "use strict";
},{"./recorder":2}],2:[function(require,module,exports){
'use strict';
var _createClass = (function () {
function defineProperties(target, props) {
for (var i = 0; i < props.length; i++) {
var descriptor = props[i];umerable = umerable || figurable = true;if ("value" in descriptor) descriptor.writable = true;Object.defineProperty(target, descriptor.key, descriptor);
}
}return function (Constructor, protoProps, staticProps) {
if (protoProps) defineProperties(Constructor.prototype, protoProps);if (staticProps) defineProperties(Constructor, staticProps);return Constructor;
};
js assign})();
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.Recorder = undefined;
var _inlineWorker = require('inline-worker');
var _inlineWorker2 = _interopRequireDefault(_inlineWorker);
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : { default: obj };
}
function _classCallCheck(instance, Constructor) {
if (!(instance instanceof Constructor)) {
throw new TypeError("Cannot call a class as a function");
}
}
var Recorder = exports.Recorder = (function () {
function Recorder(source, cfg) {
var _this = this;
_classCallCheck(this, Recorder);
bufferLen: 4096,
numChannels: 2,
mimeType: 'audio_pcm/wav'
};
this.callbacks = {
getBuffer: [],
exportWAV: []
};
Object.fig, cfg);
if (!_ding) return;
var buffer = [];
for (var channel = 0; channel < _fig.numChannels; channel++) {
buffer.push(ChannelData(channel));
}
_this.worker.postMessage({
command: 'record',
buffer: buffer
});
};
var self = {};
this.worker = new _inlineWorker2.default(function () {
var recLength = 0,
recBuffers = [],
sampleRate = undefined,
numChannels = undefined;
switch (e.datamand) {
case 'init':
init(fig);
break;
case 'record':
record(e.data.buffer);
break;
case 'exportWAV':
exportWAV(pe);
break;
case 'getBuffer':
getBuffer();
break;
case 'clear':
clear();
break;
}
};
function init(config) {
sampleRate = config.sampleRate;
numChannels = config.numChannels;
initBuffers();
}
function record(inputBuffer) {
for (var channel = 0; channel < numChannels; channel++) {
recBuffers[channel].push(inputBuffer[channel]);
}
recLength += inputBuffer[0].length;
}
function exportWAV(type) {
var buffers = [];
for (var channel = 0; channel < numChannels; channel++) {
buffers.push(mergeBuffers(recBuffers[channel], recLength));
}
var interleaved = undefined;
if (numChannels === 2) {
interleaved = interleave(buffers[0], buffers[1]);
} else {
interleaved = buffers[0];
}
var dataview = encodeWAV(interleaved);
var audioBlob = new Blob([dataview], { type: type });
self.postMessage({ command: 'exportWAV', data: audioBlob });
}
function getBuffer() {
var buffers = [];
for (var channel = 0; channel < numChannels; channel++) {
buffers.push(mergeBuffers(recBuffers[channel], recLength));
}
self.postMessage({ command: 'getBuffer', data: buffers });
}
function clear() {
recLength = 0;
recBuffers = [];
initBuffers();
}
function initBuffers() {
for (var channel = 0; channel < numChannels; channel++) {
recBuffers[channel] = [];
}
}
function mergeBuffers(recBuffers, recLength) {
var result = new Float32Array(recLength);
var offset = 0;
for (var i = 0; i < recBuffers.length; i++) {
result.set(recBuffers[i], offset);
offset += recBuffers[i].length;
}
return result;
}
function interleave(inputL, inputR) {
var length = inputL.length + inputR.length;
var result = new Float32Array(length);
var index = 0,
inputIndex = 0;
while (index < length) {
result[index++] = inputL[inputIndex];
result[index++] = inputR[inputIndex];
inputIndex++;
}
return result;
}
function floatTo16BitPCM(output, offset, input) {
for (var i = 0; i < input.length; i++, offset += 2) {
var s = Math.max(-1, Math.min(1, input[i]));
output.setInt16(offset, s < 0 ? s * 0x8000 : s * 0x7FFF, true);
}
}
function writeString(view, offset, string) {
for (var i = 0; i < string.length; i++) {
view.setUint8(offset + i, string.charCodeAt(i));
}
}
function encodeWAV(samples) {
var buffer = new ArrayBuffer(44 + samples.length * 2);
var view = new DataView(buffer);
/* RIFF identifier */
writeString(view, 0, 'RIFF');
/* RIFF chunk length */
view.setUint32(4, 36 + samples.length * 2, true);
/* RIFF type */
writeString(view, 8, 'WAVE');
/* format chunk identifier */
writeString(view, 12, 'fmt ');
/* format chunk length */
view.setUint32(16, 16, true);
/* sample format (raw) */
view.setUint16(20, 1, true);
/* channel count */
view.setUint16(22, numChannels, true);
/
* sample rate */
view.setUint32(24, sampleRate, true);
/* byte rate (sample rate * block align) */
view.setUint32(28, sampleRate * 4, true);
/* block align (channel count * bytes per sample) */
view.setUint16(32, numChannels * 2, true);
/* bits per sample */
view.setUint16(34, 16, true);
/* data chunk identifier */
writeString(view, 36, 'data');
/* data chunk length */
view.setUint32(40, samples.length * 2, true);
floatTo16BitPCM(view, 44, samples);
return view;
}
}, self);
this.worker.postMessage({
command: 'init',
config: {
sampleRate: t.sampleRate,
numChannels: fig.numChannels
}
});
ssage = function (e) {
var cb = _this.callbacks[e.datamand].pop();
if (typeof cb == 'function') {
cb(e.data.data);
}
};
}
_createClass(Recorder, [{
key: 'record',
value: function record() {
}
}, {
key: 'stop',
value: function stop() {
}
}, {
key: 'clear',
value: function clear() {
this.worker.postMessage({ command: 'clear' });
}
}, {
key: 'getBuffer',
value: function getBuffer(cb) {
cb = cb || fig.callback;
if (!cb) throw new Error('Callback not set');
Buffer.push(cb);
this.worker.postMessage({ command: 'getBuffer' });
}
}, {
key: 'exportWAV',
value: function exportWAV(cb, mimeType) {
mimeType = mimeType || fig.mimeType;
cb = cb || fig.callback;
if (!cb) throw new Error('Callback not set');
portWAV.push(cb);
this.worker.postMessage({
command: 'exportWAV',
type: mimeType
});
}
}], [{
key: 'forceDownload',
value: function forceDownload(blob, filename) {
var url = (window.URL || window.webkitURL).createObjectURL(blob);  var link = ateElement('a');
link.href = url;
link.download = filename || 'output.wav';
var click = ateEvent("Event");
click.initEvent("click", true, true);
link.dispatchEvent(click);
}
}]);
return Recorder;
})();
exports.default = Recorder;
},{"inline-worker":3}],3:[function(require,module,exports){
"use strict";
},{"./inline-worker":4}],4:[function(require,module,exports){
(function (global){
"use strict";
var _createClass = (function () { function defineProperties(target, props) { for (var key in props) { var prop = props[key]; figurable = true; if (prop.value) prop.writable = true; } Object.defineProperties(target, props); } return function (Constructor, protoProps var _classCallCheck = function (instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } };
var WORKER_ENABLED = !!(global === global.window && global.URL && global.Blob && global.Worker);
var InlineWorker = (function () {
function InlineWorker(func, self) {
var _this = this;
_classCallCheck(this, InlineWorker);
if (WORKER_ENABLED) {
var functionBody = String().trim().match(/^function\s*\w*\s*\([\w\s,]*\)\s*{([\w\W]*?)}$/)[1];
var url = ateObjectURL(new global.Blob([functionBody], { type: "text/javascript" }));
return new global.Worker(url);
}
this.self = self;
this.self.postMessage = function (data) {
setTimeout(function () {
_ssage({ data: data });
}, 0);
};
setTimeout(function () {
func.call(self);
}, 0);
}
_createClass(InlineWorker, {
postMessage: {
value: function postMessage(data) {
var _this = this;
setTimeout(function () {
_ssage({ data: data });
}, 0);
}
}
});
return InlineWorker;
})();
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}]},{},[1])(1)
});
3.flask写法
...
@ute("/")
def index():
return render_template("index.html")
@ute("/receive_audio", methods=["POST"])
def receive_audio():
file = ("audio")
if file:
filepath = os.path.join(BAISE_DIR, "data", "%s.m4a" % uuid4())
file.save(filepath)
text = baidu.auido2text(filepath)
answer = tuling.chat(text)
res = 2audio(answer)
("err_no") == 200:
return {"code": 200, "filename": ("filename")}
return {"code": 201, "msg": "上传失败"}
@ute("/get_audio/<filename>")
def get_audio(filename):
return send_file(os.path.join(BAISE_DIR, "data", filename))
...
注意flask启动ip写成127.0.0.1 其他地址 js可能会报错
以上就是本⽂的全部内容，希望对⼤家的学习有所帮助，也希望⼤家多多⽀持。

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