lvfengfree
ed9d1d7325
- Agent端优化: * 添加质量档位定义 (Low: 320x180@3fps, High: 1280x720@15fps) * H.264编码器支持动态质量切换 * 屏幕流服务支持按需推流和质量控制 * 添加SignalR信令客户端连接服务器 - 服务器端优化: * 添加StreamSignalingHub处理质量控制信令 * 支持设备注册/注销和监控状态管理 * 支持教师端监控控制和设备选中 - 前端组件: * 创建H264VideoPlayer组件支持H.264和JPEG模式 * 更新学生屏幕监控页面使用新组件 - 性能提升: * 带宽从120Mbps降至6-7Mbps (降低95%) * 监控墙模式: 60台100kbps=6Mbps * 单机放大模式: 1台1Mbps+59台100kbps=6.9Mbps * 无人观看时停止推流节省带宽
291 lines
9.1 KiB
HTML
291 lines
9.1 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<title>H.264 视频流测试</title>
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<style>
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body {
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font-family: Arial, sans-serif;
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margin: 20px;
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background: #f0f0f0;
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}
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.container {
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max-width: 1400px;
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margin: 0 auto;
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background: white;
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padding: 20px;
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border-radius: 8px;
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box-shadow: 0 2px 8px rgba(0,0,0,0.1);
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}
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h1 {
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color: #333;
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}
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.controls {
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margin-bottom: 20px;
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}
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button {
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padding: 10px 20px;
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margin-right: 10px;
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background: #409eff;
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color: white;
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border: none;
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border-radius: 4px;
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cursor: pointer;
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}
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button:hover {
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background: #66b1ff;
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}
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.video-container {
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position: relative;
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width: 100%;
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height: 720px;
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background: #000;
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display: flex;
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align-items: center;
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justify-content: center;
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}
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video {
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max-width: 100%;
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max-height: 100%;
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}
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.status {
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position: absolute;
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top: 10px;
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left: 10px;
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background: rgba(0,0,0,0.7);
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color: white;
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padding: 10px;
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border-radius: 4px;
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font-size: 14px;
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}
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.log {
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margin-top: 20px;
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padding: 10px;
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background: #f5f5f5;
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border-radius: 4px;
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max-height: 300px;
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overflow-y: auto;
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font-family: monospace;
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font-size: 12px;
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}
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.log-entry {
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margin: 2px 0;
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}
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.log-info { color: #409eff; }
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.log-error { color: #f56c6c; }
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.log-success { color: #67c23a; }
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</style>
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</head>
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<body>
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<div class="container">
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<h1>H.264 视频流测试</h1>
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<div class="controls">
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<button onclick="connect()">连接</button>
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<button onclick="disconnect()">断开</button>
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<button onclick="clearLog()">清空日志</button>
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</div>
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<div class="video-container">
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<video id="video" autoplay muted playsinline></video>
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<div class="status" id="status">未连接</div>
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</div>
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<div class="log" id="log"></div>
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</div>
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<script>
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const DEVICE_IP = '192.168.8.111';
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const WS_PORT = 9100;
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let ws = null;
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let mediaSource = null;
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let sourceBuffer = null;
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let queue = [];
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let isJpegMode = false;
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let lastImageUrl = '';
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const video = document.getElementById('video');
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const statusEl = document.getElementById('status');
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const logEl = document.getElementById('log');
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function log(message, type = 'info') {
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const entry = document.createElement('div');
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entry.className = `log-entry log-${type}`;
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entry.textContent = `[${new Date().toLocaleTimeString()}] ${message}`;
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logEl.appendChild(entry);
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logEl.scrollTop = logEl.scrollHeight;
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console.log(message);
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}
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function updateStatus(text, color = '#409eff') {
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statusEl.textContent = text;
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statusEl.style.background = `rgba(${color === '#67c23a' ? '103,194,58' : color === '#f56c6c' ? '245,108,108' : '64,158,255'},0.7)`;
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}
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function clearLog() {
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logEl.innerHTML = '';
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}
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async function connect() {
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if (ws) {
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log('已有连接，先断开', 'info');
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disconnect();
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}
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const wsUrl = `ws://${DEVICE_IP}:${WS_PORT}/`;
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log(`正在连接到: ${wsUrl}`, 'info');
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updateStatus('正在连接...', '#409eff');
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ws = new WebSocket(wsUrl);
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ws.binaryType = 'arraybuffer';
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ws.onopen = () => {
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log('WebSocket 连接成功', 'success');
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updateStatus('已连接', '#67c23a');
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};
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ws.onmessage = async (event) => {
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if (typeof event.data === 'string') {
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// 初始化消息
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try {
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const init = JSON.parse(event.data);
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log(`收到初始化消息: ${JSON.stringify(init)}`, 'success');
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if (init.mode === 'h264') {
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isJpegMode = false;
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log('使用 H.264 模式', 'info');
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await initH264Player();
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} else {
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isJpegMode = true;
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log('使用 JPEG 模式', 'info');
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initJpegPlayer();
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}
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} catch (e) {
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log(`解析初始化消息失败: ${e.message}`, 'error');
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}
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} else {
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// 二进制数据
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const size = event.data.byteLength;
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log(`收到帧数据: ${(size / 1024).toFixed(2)} KB`, 'info');
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handleFrame(new Uint8Array(event.data));
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}
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};
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ws.onerror = (error) => {
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log(`WebSocket 错误: ${error}`, 'error');
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updateStatus('连接错误', '#f56c6c');
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};
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ws.onclose = () => {
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log('WebSocket 已断开', 'info');
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updateStatus('已断开', '#909399');
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};
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}
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async function initH264Player() {
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try {
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mediaSource = new MediaSource();
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video.src = URL.createObjectURL(mediaSource);
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await new Promise((resolve) => {
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mediaSource.addEventListener('sourceopen', resolve, { once: true });
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});
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const codec = 'video/mp4; codecs="avc1.42E01E"';
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if (!MediaSource.isTypeSupported(codec)) {
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log(`不支持的编解码器: ${codec}`, 'error');
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updateStatus('浏览器不支持 H.264', '#f56c6c');
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return;
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}
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sourceBuffer = mediaSource.addSourceBuffer(codec);
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sourceBuffer.mode = 'sequence';
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sourceBuffer.addEventListener('updateend', () => {
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if (queue.length > 0 && !sourceBuffer.updating) {
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const data = queue.shift();
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sourceBuffer.appendBuffer(data);
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}
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});
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log('H.264 播放器初始化成功', 'success');
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} catch (error) {
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log(`初始化 H.264 播放器失败: ${error.message}`, 'error');
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updateStatus('初始化失败', '#f56c6c');
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}
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}
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function initJpegPlayer() {
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log('JPEG 播放器初始化成功', 'success');
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video.style.display = 'none';
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}
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function handleFrame(data) {
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if (!isJpegMode && sourceBuffer) {
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// H.264 模式
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if (sourceBuffer.updating || queue.length > 0) {
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queue.push(data);
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if (queue.length > 30) {
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log(`队列过长 (${queue.length})，丢弃旧帧`, 'info');
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queue.shift();
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}
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} else {
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try {
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sourceBuffer.appendBuffer(data);
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} catch (error) {
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log(`添加缓冲区失败: ${error.message}`, 'error');
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}
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}
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} else {
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// JPEG 模式
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const blob = new Blob([data], { type: 'image/jpeg' });
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const url = URL.createObjectURL(blob);
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if (lastImageUrl) {
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URL.revokeObjectURL(lastImageUrl);
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}
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lastImageUrl = url;
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video.poster = url;
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video.style.display = 'block';
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}
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}
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function disconnect() {
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if (ws) {
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ws.close();
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ws = null;
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}
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if (mediaSource) {
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if (mediaSource.readyState === 'open') {
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mediaSource.endOfStream();
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}
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mediaSource = null;
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}
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sourceBuffer = null;
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queue = [];
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if (lastImageUrl) {
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URL.revokeObjectURL(lastImageUrl);
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lastImageUrl = '';
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}
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log('已断开连接', 'info');
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updateStatus('未连接', '#909399');
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}
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// 页面加载时自动连接
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window.addEventListener('load', () => {
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log('页面加载完成', 'info');
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setTimeout(connect, 500);
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});
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// 页面卸载时断开连接
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window.addEventListener('beforeunload', disconnect);
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</script>
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</body>
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</html>
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