下面是基于Vue和腾讯云WebRTC实现直播功能的实践攻略。
1. 确定使用的腾讯云实时音视频(TRTC)产品
TRTC是一款面向各种实时音视频场景的低延时、高可靠、高清晰度、跨平台的音视频通信产品。在TRTC中,我们可以选择使用WebRTC SDK来实现浏览器端的直播功能。在此之前,需要在腾讯云官网注册账号,并创建应用,获取AppID、密钥和密钥ID等相关信息。
2. 安装必要的依赖和配置
我们需要安装腾讯云的WebRTC SDK和Vue.js的相关依赖。首先,配置tsconfig.json:
// tsconfig.json
{
"compilerOptions": {
"target": "es5",
"module": "esnext",
"moduleResolution": "node",
"allowSyntheticDefaultImports": true,
"strict": true,
"jsx": "preserve",
"importHelpers": true,
"esModuleInterop": true,
"skipLibCheck": true,
"sourceMap": true,
"noImplicitAny": true,
"declaration": true,
"noImplicitReturns": true,
"noImplicitThis": true,
"suppressImplicitAnyIndexErrors": true,
"forceConsistentCasingInFileNames": true
},
"include": [
"src/**/*"
],
"exclude": [
"node_modules"
]
}
接下来,我们可以安装相关依赖:
npm install tencent-trtc-webrtc-sdk --save
npm install vue vue-router axios --save
npm install @types/webrtc
3. 实现直播功能
3.1. 初始化TRTC SDK
在使用TRTC SDK之前,需要下载SDK并安装。安装完成后,在Vue项目中初始化:
// index.ts
import TRTC from 'tencent-trtc-webrtc-sdk'
TRTC.checkAVSupport().then(() => {
console.log('Your browser is compatible')
})
3.2. 创建房间
当用户创建一个直播房间时,需要调用WebRTC SDK提供的API将其添加到房间中:
// LiveRoom.vue
<template>
<div>
<div>{{liveInfo.roomId}}</div>
<button @click="createRoom">创建直播房间</button>
</div>
</template>
<script lang="ts">
import { Component, Vue } from 'vue-property-decorator'
import { createRoom } from '@/api/live'
import TRTC from 'tencent-trtc-webrtc-sdk'
@Component
export default class LiveRoom extends Vue {
createRoom () {
createRoom().then(({ roomId, userId }) => {
this.liveInfo.roomId = roomId
TRTC.joinRoom({
sdkAppId: process.env.VUE_APP_APPID,
userId: userId,
userSig: userSig, // 用户鉴权信息
roomId: roomId,
role: 'anchor' // 当前用户角色,包括:'anchor', 'audience', 'guest'
}).then(() => {
console.log('Join Room Success')
}).catch((err: any) => {
console.log(err)
})
})
}
}
</script>
3.3. 获取本地设备
在进入直播房间前,需要获取本地视频和音频设备。TRTC SDK提供了相关API来获取设备信息:
// LiveRoom.vue
<template>
<div>
<div>{{liveInfo.roomId}}</div>
<button @click="createRoom">创建直播房间</button>
<div>
<video :src="localStream?.toURL()" muted autoplay></video>
</div>
</div>
</template>
<script lang="ts">
import { Component, Vue } from 'vue-property-decorator'
import { createRoom } from '@/api/live'
import TRTC from 'tencent-trtc-webrtc-sdk'
@Component
export default class LiveRoom extends Vue {
localStream: any = null
createRoom () {
// ...
}
async getLocalDevice () {
try {
const { cameraList, microphoneList } = await TRTC.getDevices()
const defaultCameraId = cameraList[0].deviceId
const defaultMicrophoneId = microphoneList[0].deviceId
this.localStream = await TRTC.createStream({
cameraId: defaultCameraId, // 默认采集摄像头
microphoneId: defaultMicrophoneId, // 默认采集麦克风
beautyLevel: 0,
mode: 'rtc',
role: 'anchor',
videoWidth: 640,
videoHeight: 480,
videoBitrate: 600,
audioBitrate: 48,
audioSampleRate: 48000
})
this.localStream.on('stream-id-ready', () => {
this.localStream.play('local-video')
})
await this.localStream.initialize()
} catch (err) {
console.error(err)
}
}
mounted () {
this.getLocalDevice()
}
}
</script>
3.4. 加入房间
加入房间后,需要获取远程视频和音频流,TRTC SDK提供了相关API来实现:
// LiveRoom.vue
<template>
<div>
<div>{{liveInfo.roomId}}</div>
<button @click="createRoom">创建直播房间</button>
<div>
<video :src="localStream?.toURL()" muted autoplay></video>
</div>
<div>
<video v-for="(id, index) in remoteStreams" :src="id.toURL()" autoplay :key="index"></video>
</div>
</div>
</template>
<script lang="ts">
import { Component, Vue } from 'vue-property-decorator'
import { createRoom } from '@/api/live'
import TRTC from 'tencent-trtc-webrtc-sdk'
@Component
export default class LiveRoom extends Vue {
localStream: any = null
remoteStreams: any = []
createRoom () {
// ...
}
async getLocalDevice () {
// ...
}
async joinRoom () {
TRTC.joinRoom({
sdkAppId: process.env.VUE_APP_APPID,
userId: 'xxxxx',
userSig: 'xxxxx', // 用户鉴权信息
roomId: this.liveInfo.roomId,
role: 'audience' // 当前用户角色,包括:'anchor', 'audience', 'guest'
}).then(() => {
TRTC.on('stream-added', event => {
TRTC.subscribe(event.stream)
})
TRTC.on('stream-subscribed', event => {
this.remoteStreams.push(event.stream)
})
}).catch(err => {
console.error(err)
})
}
mounted () {
this.getLocalDevice()
this.joinRoom()
}
}
</script>
示例:插件开发中直播模块
我们可以将上述代码封装为一个Vue插件进行开发。在该插件中,实现创建直播房间、加入直播房间、获取本地设备、获取远程流等功能,使得其他开发者无需复杂的代码即可直接使用。
// src/plugins/live.ts
import { VueConstructor } from 'vue'
import TRTC from 'tencent-trtc-webrtc-sdk'
import { createRoom } from '@/api/live'
class Live {
roomId: string = ''
localStream: any = null
remoteStreams: any = []
constructor () {
this.init()
}
async init () {
try {
const { cameraList, microphoneList } = await TRTC.getDevices()
const defaultCameraId = cameraList[0].deviceId
const defaultMicrophoneId = microphoneList[0].deviceId
this.localStream = await TRTC.createStream({
cameraId: defaultCameraId, // 默认采集摄像头
microphoneId: defaultMicrophoneId, // 默认采集麦克风
beautyLevel: 0,
mode: 'rtc',
role: 'anchor',
videoWidth: 640,
videoHeight: 480,
videoBitrate: 600,
audioBitrate: 48,
audioSampleRate: 48000
})
this.localStream.on('stream-id-ready', () => {
this.localStream.play('local-video')
})
await this.localStream.initialize()
} catch (err) {
console.error(err)
}
TRTC.on('stream-added', event => {
TRTC.subscribe(event.stream)
})
TRTC.on('stream-subscribed', event => {
this.remoteStreams.push(event.stream)
})
}
async createRoom () {
try {
const { roomId, userId } = await createRoom()
this.roomId = roomId
await TRTC.joinRoom({
sdkAppId: process.env.VUE_APP_APPID,
userId: userId,
userSig: userSig, // 用户鉴权信息
roomId: roomId,
role: 'anchor' // 当前用户角色,包括:'anchor', 'audience', 'guest'
})
} catch (err) {
console.error(err)
}
}
async joinRoom () {
try {
await TRTC.joinRoom({
sdkAppId: process.env.VUE_APP_APPID,
userId: 'xxxxx',
userSig: 'xxxxx', // 用户鉴权信息
roomId: this.roomId,
role: 'audience' // 当前用户角色,包括:'anchor', 'audience', 'guest'
})
} catch (err) {
console.error(err)
}
}
async getLocalStream () {
return this.localStream
}
async getRemoteStreams () {
return this.remoteStreams
}
}
const live = new Live()
export default {
install (Vue: VueConstructor) {
Vue.prototype.$live = live
}
}
我们可以在Vue项目中进行如下使用:
// main.ts
import Vue from 'vue'
import App from './App.vue'
import router from './router'
import LivePlugin from '@/plugins/live'
Vue.use(LivePlugin)
Vue.config.productionTip = false
new Vue({
router,
render: h => h(App)
}).$mount('#app')
// Live.vue
<template>
<div>
<div>{{roomId}}</div>
<button @click="createRoom">创建直播房间</button>
<div>
<video :src="localStream?.toURL()" muted autoplay></video>
</div>
<div>
<video v-for="(id, index) in remoteStreams" :src="id.toURL()" autoplay :key="index"></video>
</div>
</div>
</template>
<script lang="ts">
import { Component, Vue } from 'vue-property-decorator'
@Component
export default class Live extends Vue {
get roomId () {
return this.$live.roomId
}
async getLocalStream () {
return await this.$live.getLocalStream()
}
async getRemoteStreams () {
return await this.$live.getRemoteStreams()
}
async createRoom () {
await this.$live.createRoom()
}
mounted () {
this.getLocalStream().then(stream => {
stream.play('local-video')
})
this.getRemoteStreams()
}
}
</script>
以上就是基于Vue和WebRTC SDK实现直播功能的详细攻略,缺少什么还请指出。
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