<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>自适应容器示例</title>
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<script th:src="@{/js/jquery-3.6.4.min.js}"></script>
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<style>
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body, html {
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margin: 0;
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padding: 0;
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height: 100%;
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}
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.container-wrapper {
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display: flex;
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flex-direction: column;
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height: 100%;
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}
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.container {
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background-color: #151414; /* 将网格项目的颜色设置为红色背景 */
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flex: 9;
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border: 1px solid #ccc;
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box-sizing: border-box;
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display: grid;
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grid-template-columns: repeat(2, 1fr); /* 默认 2x2 网格 */
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grid-gap: 10px;
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overflow: hidden; /* 防止视频溢出容器 */
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}
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.grid-item {
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background-color: #151414; /* 将网格项目的颜色设置为红色背景 */
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text-align: center;
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display: flex;
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justify-content: center;
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align-items: center;
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border: 1px solid #ccc;
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box-sizing: border-box;
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padding: 10px; /* 内边距为 10px */
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position: relative; /* 添加相对定位 */
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}
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.video-container {
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width: 100%;
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height: 100%;
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display: flex;
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justify-content: center;
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align-items: center;
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overflow: hidden; /* 防止视频溢出容器 */
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position: absolute; /* 添加绝对定位 */
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top: 0;
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left: 0;
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right: 0;
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bottom: 0;
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}
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.container2 {
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flex: 1;
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border: 1px solid #ccc;
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padding: 10px;
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box-sizing: border-box;
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}
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/* 修改 video 样式 */
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video {
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width: 100%;
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height: 100%;
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object-fit: fill;
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}
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</style>
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</head>
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<body>
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<div class="container-wrapper">
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<div class="container" id="gridContainer">
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<!-- 网格项目将由 JavaScript 动态生成 -->
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</div>
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<div class="container2">
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<div class="button-container">
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<button class="toggle-button" onclick="changeGrid(1, 1)">1x1</button>
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<button class="toggle-button" onclick="changeGrid(2, 2)">2x2</button>
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<button class="toggle-button" onclick="changeGrid(3, 3)">3x3</button>
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<button class="toggle-button" onclick="changeGrid(4, 4)">4x4</button>
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</div>
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</div>
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</div>
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<script>
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function calculateAspectRatio(videoWidth, videoHeight) {
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return videoWidth / videoHeight;
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}
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function adjustGridItemSize(gridItem, videoWidth, videoHeight) {
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const aspectRatio = calculateAspectRatio(videoWidth, videoHeight);
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gridItem.style.aspectRatio = aspectRatio; /* 设置宽高比 */
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}
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function changeGrid(rows, cols) {
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closeAllVideo();
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const gridContainer = document.getElementById('gridContainer');
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gridContainer.innerHTML = '';
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for (let i = 1; i <= rows * cols; i++) {
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const gridItem = document.createElement('div');
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gridItem.className = 'grid-item';
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const videoContainer = document.createElement('div');
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videoContainer.className = 'video-container';
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const video = document.createElement('video');
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video.id="video"+i;
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video.controls = true;
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video.autoplay = true;
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video.muted = true;
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videoContainer.appendChild(video);
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gridItem.appendChild(videoContainer);
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gridContainer.appendChild(gridItem);
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video.addEventListener('loadedmetadata', function () {
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adjustGridItemSize(gridItem, gridItem.videoWidth, gridItem.videoHeight);
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});
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console.log(video.id)
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}
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gridContainer.style.gridTemplateColumns = `repeat(${cols}, 1fr)`;
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}
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var chanMap = new Map();
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window.onload = function () {
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changeGrid(2, 2);
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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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$(document).on('click', 'video', function() {
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let ID = this.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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function closeAllVideo(){
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videoMap.forEach((val,key) => {
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console.log(val,key);
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val.stop(key);
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videoMap.delete(key);
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})
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}
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</script>
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</body>
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</html>
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