Javascript MediaStreamRecorder不是构造函数
我是Angular6的新手,我正在尝试使用Javascript MediaStreamRecorder不是构造函数,javascript,typescript,constructor,angular6,mediastream,Javascript,Typescript,Constructor,Angular6,Mediastream,我是Angular6的新手,我正在尝试使用MediaStreamRecorder。在定义MediaStreamRecorder时,我肯定是做错了什么,因为我不断得到错误TypeError:msr\uu网页包\u导入的模块\uu4\uu。MediaStreamRecorder不是构造函数。不确定如何或在何处声明和定义MediaStreamRecorder。你能帮我做这个吗 我已经安装了msr模块,我的代码如下: import { Component,ViewChild, OnInit, Injec
MediaStreamRecorder
。在定义MediaStreamRecorder
时,我肯定是做错了什么,因为我不断得到错误TypeError:msr\uu网页包\u导入的模块\uu4\uu。MediaStreamRecorder不是构造函数
。不确定如何或在何处声明和定义MediaStreamRecorder
。你能帮我做这个吗
我已经安装了msr
模块,我的代码如下:
import { Component,ViewChild, OnInit, Inject } from '@angular/core';
import { LinksService } from 'demo/_services/links.service';
import { Http,Response,Headers } from '@angular/http';
import { MediaStreamRecorder} from 'msr';
import { RecordRTC } from 'recordrtc';
@Component({
selector: 'demo-ceva',
templateUrl: './ceva.component.html',
styleUrls: ['./ceva.component.css'],
providers: [
{
provide: SpeechRecognitionLang,
useValue: 'en-US',
},
SpeechRecognitionService,
],
})
export class CevaComponent {
public navigator: any;
public MediaStreamRecorder: any;
constructor( private http: Http, private service: SpeechRecognitionService, private links: LinksService ) {
this.record = () => {
var browser = <any>navigator;
var obj = { audio: true, video:false };
browser.getUserMedia = (browser.getUserMedia || browser.webkitGetUserMedia || browser.mozGetUserMedia || browser.msGetUserMedia);
browser.mediaDevices.getUserMedia(obj).then(stream => {
var source = window.URL.createObjectURL(stream);
var config= { ... }
var recorder = new MediaStreamRecorder(stream, config);
recorder.record();
recorder.stop(function(blob) {
var blob = recorder.blob;
console.log(blob);
});
});
});
从'@angular/core'导入{Component,ViewChild,OnInit,Inject};
从'demo/_services/links.service'导入{LinksService};
从'@angular/Http'导入{Http,Response,Headers};
从“msr”导入{MediaStreamRecorder};
从'RecordRTC'导入{RecordRTC};
@组成部分({
选择器:“演示ceva”,
templateUrl:'./ceva.component.html',
样式URL:['./ceva.component.css'],
供应商:[
{
提供:SpeechRecognitionLang,
useValue:“en US”,
},
演讲认可服务,
],
})
导出类CevaComponent{
公共导航器:任何;
公共媒体流记录器:任何;
构造函数(私有http:http,私有服务:SpeechRecognitionService,私有链接:LinksService){
this.record=()=>{
var浏览器=导航器;
var obj={audio:true,video:false};
browser.getUserMedia=(browser.getUserMedia | | browser.webkitGetUserMedia | | browser.mozGetUserMedia | | browser.msGetUserMedia);
browser.mediaDevices.getUserMedia(obj).then(stream=>{
var source=window.URL.createObjectURL(流);
变量配置={…}
var记录器=新的MediaStreamRecorder(流,配置);
recorder.record();
记录器停止(功能(blob){
var blob=recorder.blob;
控制台日志(blob);
});
});
});
正如对此的回答所建议的,我的解决方案是在typings.d.ts
文件中添加以下声明:
declare interface MediaRecorderErrorEvent extends Event {
name: string;
}
declare interface MediaRecorderDataAvailableEvent extends Event {
data : any;
}
interface MediaRecorderEventMap {
'dataavailable': MediaRecorderDataAvailableEvent;
'error': MediaRecorderErrorEvent ;
'pause': Event;
'resume': Event;
'start': Event;
'stop': Event;
'warning': MediaRecorderErrorEvent ;
}
declare class MediaRecorder extends EventTarget {
readonly mimeType: string;
// readonly MimeType: 'audio/wav';
readonly state: 'inactive' | 'recording' | 'paused';
readonly stream: MediaStream;
ignoreMutedMedia: boolean;
videoBitsPerSecond: number;
audioBitsPerSecond: number;
ondataavailable: (event : MediaRecorderDataAvailableEvent) => void;
onerror: (event: MediaRecorderErrorEvent) => void;
onpause: () => void;
onresume: () => void;
onstart: () => void;
onstop: () => void;
constructor(stream: MediaStream);
start();
stop();
resume();
pause();
isTypeSupported(type: string): boolean;
requestData();
addEventListener<K extends keyof MediaRecorderEventMap>(type: K, listener: (this: MediaStream, ev: MediaRecorderEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
removeEventListener<K extends keyof MediaRecorderEventMap>(type: K, listener: (this: MediaStream, ev: MediaRecorderEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
声明接口MediaRecorderErrorRevent扩展事件{
名称:字符串;
}
声明接口MediaRecorderDataAvailableEvent扩展事件{
资料:有;
}
接口MediaRecorderEventMap{
“dataavailable”:MediaRecorderDataAvailableEvent;
“错误”:MediaRecorderErrorEvent;
“暂停”:事件;
“恢复”:事件;
“开始”:事件;
“停止”:事件;
“警告”:MediaRecorderErrorEvent;
}
声明类MediaRecorder扩展了EventTarget{
只读mimeType:string;
//只读MimeType:“音频/wav”;
只读状态:“非活动”|“录制”|“暂停”;
只读流:媒体流;
ignoreMutedMedia:布尔值;
videoBitsPerSecond:数字;
音频比特秒:数字;
ondataavailable:(事件:MediaRecorderDataAvailableEvent)=>void;
OneError:(事件:MediaRecorderErrorRevent)=>无效;
onpause:()=>void;
onresume:()=>无效;
onstart:()=>void;
顶部:()=>void;
构造函数(流:MediaStream);
start();
停止();
恢复();
暂停();
isTypeSupported(类型:字符串):布尔值;
请求数据();
addEventListener(类型:K,侦听器:(this:MediaStream,ev:MediaRecorderEventMap[K])=>any,options?:boolean | AddEventListenerOptions):void;
addEventListener(类型:字符串,侦听器:EventListenerOrEventListenerObject,选项?:布尔| AddEventListenerOptions):void;
removeEventListener(类型:K,listener:(this:MediaStream,ev:MediaRecorderEventMap[K])=>any,options?:boolean | EventListenerOptions):void;
removeEventListener(类型:字符串,侦听器:EventListenerOrEventListenerObject,选项?:布尔值| EventListenerOptions):void;
在我的组件中,我可以使用
var media recorder=new media recorder(stream);
而无需任何其他声明。感谢@firefolds链接到这篇文章,感谢@Tiberiu C.的回答!这真的很有帮助。我对纯JS也有同样的问题,并做出反应,删除了下面的“修复”一行问题是:
npm install -D @types/dom-mediacapture-record
window.MediaRecorder=require('audio-recorder-polyfill');
这是一个库吗?我想是的。我不确定这个API是完全相同的还是派生的:您正在尝试将普通浏览器组件引用到angular typescript中。看看这个,谢谢!这很有帮助:)当您解决问题时,请发布解决方案:)