<!DOCTYPE html>
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<html lang="en" xmlns:th="http://www.thymeleaf.org">
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<head>
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<meta charset="UTF-8">
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<title>测试页</title>
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<script th:src="@{/js/jquery-3.6.4.min.js}"></script>
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<link rel="stylesheet" th:href="@{/css/bootstrap.css}"/>
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<script th:src="@{/js/bootstrap.js}"></script>
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<style>
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.video-container {
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display: inline-block;
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vertical-align: top;
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width: 33%; /* 3个视频平均分配一行的宽度 */
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/*padding: 2px; !* 可以根据需要调整内边距 *!*/
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box-sizing: border-box;
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}
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.video-container video {
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width: 100%;
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height: 100%;
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/*object-fit: cover; !* 视频填充容器，保持宽高比 *!*/
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}
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</style>
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<body>
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<div>
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<div class="row">
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<div class="video-container">
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<video id="video1" muted autoplay loop controls></video>
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</div>
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<div class="video-container">
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<video id="video2" muted autoplay loop controls></video>
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</div>
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<div class="video-container">
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<video id="video3" muted autoplay loop controls></video>
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</div>
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<div class="video-container">
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<video id="video4" muted autoplay loop controls></video>
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</div>
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<div class="video-container">
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<video id="video5" muted autoplay loop controls></video>
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</div>
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</div>
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</div>
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<script th:inline="javascript">
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var chanMap = new Map();
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window.onload = function () {
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chanMap.set("video1", "http://127.0.0.1:8889/245/");
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chanMap.set("video2", "http://127.0.0.1:8889/164/");
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chanMap.set("video3", "http://127.0.0.1:8889/164/");
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chanMap.set("video4", "http://127.0.0.1:8889/165/");
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chanMap.set("video5", "http://127.0.0.1:8889/165/");
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console.log(chanMap);
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}
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const linkToIceServers = (links) => (
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(links !== null) ? links.split(', ').map((link) => {
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const m = link.match(/^<(.+?)>; rel="ice-server"(; username="(.*?)"; credential="(.*?)"; credential-type="password")?/i);
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const ret = {
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urls: [m[1]],
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};
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if (m[3] !== undefined) {
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ret.username = unquoteCredential(m[3]);
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ret.credential = unquoteCredential(m[4]);
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ret.credentialType = "password";
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}
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return ret;
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}) : []
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);
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const parseOffer = (offer) => {
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const ret = {
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iceUfrag: '',
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icePwd: '',
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medias: [],
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};
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for (const line of offer.split('\r\n')) {
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if (line.startsWith('m=')) {
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ret.medias.push(line.slice('m='.length));
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} else if (ret.iceUfrag === '' && line.startsWith('a=ice-ufrag:')) {
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ret.iceUfrag = line.slice('a=ice-ufrag:'.length);
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} else if (ret.icePwd === '' && line.startsWith('a=ice-pwd:')) {
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ret.icePwd = line.slice('a=ice-pwd:'.length);
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}
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}
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return ret;
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};
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const generateSdpFragment = (offerData, candidates) => {
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const candidatesByMedia = {};
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for (const candidate of candidates) {
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const mid = candidate.sdpMLineIndex;
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if (candidatesByMedia[mid] === undefined) {
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candidatesByMedia[mid] = [];
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}
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candidatesByMedia[mid].push(candidate);
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}
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let frag = 'a=ice-ufrag:' + offerData.iceUfrag + '\r\n'
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+ 'a=ice-pwd:' + offerData.icePwd + '\r\n';
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let mid = 0;
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for (const media of offerData.medias) {
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if (candidatesByMedia[mid] !== undefined) {
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frag += 'm=' + media + '\r\n'
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+ 'a=mid:' + mid + '\r\n';
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for (const candidate of candidatesByMedia[mid]) {
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frag += 'a=' + candidate.candidate + '\r\n';
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}
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}
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mid++;
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}
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return frag;
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}
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class WHEPClient {
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constructor(wurl, videoId) {
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this.video = videoId;
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this.url = new URL('whep', wurl);
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this.pc = null;
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this.restartTimeout = null;
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this.eTag = '';
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this.queuedCandidates = [];
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this.start();
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}
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start() {
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console.log("requesting ICE servers");
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fetch(this.url, {
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method: 'OPTIONS',
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})
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.then((res) => this.onIceServers(res))
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.catch((err) => {
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console.log('error: ' + err);
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this.scheduleRestart();
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});
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}
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onIceServers(res) {
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this.pc = new RTCPeerConnection({
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iceServers: linkToIceServers(res.headers.get('Link')),
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});
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const direction = "sendrecv";
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this.pc.addTransceiver("video", {direction});
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this.pc.addTransceiver("audio", {direction});
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this.pc.onicecandidate = (evt) => this.onLocalCandidate(evt);
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this.pc.oniceconnectionstatechange = () => this.onConnectionState();
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this.pc.ontrack = (evt) => {
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console.log("new track:", evt.track.kind);
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document.getElementById(this.video).srcObject = evt.streams[0];
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};
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this.pc.createOffer()
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.then((offer) => this.onLocalOffer(offer));
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}
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onLocalOffer(offer) {
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this.offerData = parseOffer(offer.sdp);
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this.pc.setLocalDescription(offer);
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console.log("sending offer");
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fetch(this.url, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/sdp',
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},
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body: offer.sdp,
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})
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.then((res) => {
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if (res.status !== 201) {
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throw new Error('bad status code');
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}
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this.eTag = res.headers.get('E-Tag');
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return res.text();
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})
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.then((sdp) => this.onRemoteAnswer(new RTCSessionDescription({
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type: 'answer',
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sdp,
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})))
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.catch((err) => {
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console.log('error: ' + err);
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this.scheduleRestart();
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});
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}
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onConnectionState() {
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if (this.restartTimeout !== null) {
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return;
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}
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console.log("peer connection state:", this.pc.iceConnectionState);
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switch (this.pc.iceConnectionState) {
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case "disconnected":
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this.scheduleRestart();
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}
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}
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onRemoteAnswer(answer) {
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if (this.restartTimeout !== null) {
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return;
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}
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this.pc.setRemoteDescription(new RTCSessionDescription(answer));
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if (this.queuedCandidates.length !== 0) {
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this.sendLocalCandidates(this.queuedCandidates);
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this.queuedCandidates = [];
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}
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}
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onLocalCandidate(evt) {
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if (this.restartTimeout !== null) {
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return;
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}
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if (evt.candidate !== null) {
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if (this.eTag === '') {
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this.queuedCandidates.push(evt.candidate);
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} else {
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this.sendLocalCandidates([evt.candidate])
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}
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}
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}
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sendLocalCandidates(candidates) {
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fetch(this.url, {
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method: 'PATCH',
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headers: {
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'Content-Type': 'application/trickle-ice-sdpfrag',
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'If-Match': this.eTag,
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},
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body: generateSdpFragment(this.offerData, candidates),
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})
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.then((res) => {
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if (res.status !== 204) {
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throw new Error('bad status code');
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}
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})
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.catch((err) => {
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console.log('error: ' + err);
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this.scheduleRestart();
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});
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}
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scheduleRestart() {
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if (this.restartTimeout !== null) {
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return;
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}
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if (this.pc !== null) {
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this.pc.close();
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this.pc = null;
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}
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this.restartTimeout = window.setTimeout(() => {
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this.restartTimeout = null;
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this.start();
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}, restartPause);
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this.eTag = '';
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this.queuedCandidates = [];
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}
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stop() {
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if (this.pc) {
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try {
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this.pc.close();
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} catch (e) {
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console.log("Failure close peer connection:" + e);
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}
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this.pc = null;
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}
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}
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}
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let videoMap = new Map();
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$('video').click(function (e) {
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let ID = e.target.id;//获取当前点击事件的元素
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console.log(ID);
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console.log(videoMap);
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if (videoMap.get(ID) != null) {
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closeVideo(ID);
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} else {
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let stream = chanMap.get(ID);
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let client = new WHEPClient(stream, ID);
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videoMap.set(ID, client);
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}
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});
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function closeVideo(id) {
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console.log("关闭" + id)
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let client = videoMap.get(id);
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client.stop(id);
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videoMap.delete(id);
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}
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</script>
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</body>
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</html>
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