首页点播布局功能初版
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龚皓
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<template>
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<div>
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<h1>
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首页
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</h1>
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</div>
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</template>
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<div class="camera-container">
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<!-- 左侧摄像头列表 -->
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<div class="camera-list">
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<el-card v-for="camera in cameras" :key="camera.id" class="camera-item" @click="selectCamera(camera)">
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<div class="camera-header">
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<span>ID: {{ camera.id }}</span>
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<span class="status" :class="{'online': camera.status === 'online', 'offline': camera.status !== 'online'}">
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{{ camera.status === 'online' ? '在线' : '离线' }}
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</span>
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</div>
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<div class="camera-content">
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<img :src="camera.snapshot" alt="camera-preview" class="camera-thumbnail" />
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<p class="camera-name">{{ camera.name }}</p>
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</div>
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</el-card>
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</div>
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<!-- 右侧摄像头详情和播放控制 -->
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<div class="camera-details" v-if="selectedCamera">
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<el-card>
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<p>{{ selectedCamera.name }}</p>
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<canvas ref="canvasRef" class="camera-large"></canvas>
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<p>摄像头状态:
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<span :class="{'online': selectedCamera.status === 'online', 'offline': selectedCamera.status !== 'online'}">
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{{ selectedCamera.status === 'online' ? '在线' : '离线' }}
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</span>
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</p>
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<!-- 播放控制按钮 -->
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<div class="stream-control">
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<el-button v-if="!playing" type="primary" @click="handleStartStream">开始点播</el-button>
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<el-button v-if="playing" type="danger" @click="handleStopStream">停止点播</el-button>
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</div>
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</el-card>
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</div>
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</div>
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</template>
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<script setup>
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import { ref, onMounted, onBeforeUnmount } from 'vue';
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import { BoxApi } from '@/utils/boxApi.ts';
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// import Jsmpeg from '../../public/static/jsmpeg-master/jsmpeg.min.js';
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// console.log(">>>>>>>>>>>>>>>>>"+Jsmpeg);
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const cameras = ref([]);
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const selectedCamera = ref(null);
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const playing = ref(false);
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const streamPort = ref(null);
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const canvasRef = ref(null);
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const playerRef = ref(null);
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const apiInstance = new BoxApi();
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// 请求摄像头数据
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const fetchCameras = async () => {
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try {
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const token = localStorage.getItem('alertToken');
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const cameraData = await apiInstance.getMinCameras(token); // 调用 getMinCameras 方法
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cameras.value = cameraData; // 保存摄像头列表数据
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} catch (error) {
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console.error('Error fetching cameras:', error);
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}
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};
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// 选择摄像头
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const selectCamera = (camera) => {
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selectedCamera.value = camera; // 将点击的摄像头设为选中的摄像头
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playing.value = false; // 重置播放状态
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streamPort.value = null; // 重置流端口
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};
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// 启动流播放
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const handleStartStream = async () => {
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if (!selectedCamera.value || !canvasRef.value) {
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return;
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}
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const token = localStorage.getItem('alertToken');
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try {
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// 调用 API 获取端口
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const response = await apiInstance.startCameraStream(token, selectedCamera.value.id);
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streamPort.value = response.port;
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playing.value = true;
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// 创建播放器
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const url = `ws://192.168.28.33:${streamPort.value}/`; // 动态流 URL
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console.log('WebSocket URL>>>>>>>>>>>>>:', url);
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// 使用全局的 window.JSMpeg 对象
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if (playerRef.value) {
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playerRef.value.destroy(); // 销毁旧播放器
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}
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if (window.JSMpeg) {
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playerRef.value = new window.JSMpeg.Player(url, {
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canvas: canvasRef.value, // 指定 canvas 渲染
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autoplay: true,
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videoBufferSize: 15 * 1024 * 1024, // 设置视频缓冲区大小
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audioBufferSize: 5 * 1024 * 1024, // 设置音频缓冲区大小
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});
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} else {
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console.error('JSMpeg is not available on window object.');
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}
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} catch (error) {
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console.error('Error starting stream:', error);
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}
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};
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// 停止流播放
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const handleStopStream = async () => {
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if (!selectedCamera.value) {
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return;
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}
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const token = localStorage.getItem('alertToken');
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try {
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await apiInstance.stopCameraStream(token, selectedCamera.value.id);
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playing.value = false;
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// 销毁播放器
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if (playerRef.value) {
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playerRef.value.destroy();
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playerRef.value = null;
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}
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} catch (error) {
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console.error('Error stopping stream:', error);
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}
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};
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// 组件卸载时清理播放器
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onBeforeUnmount(() => {
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if (playerRef.value) {
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playerRef.value.destroy();
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playerRef.value = null;
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}
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});
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onMounted(() => {
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fetchCameras(); // 页面加载时请求摄像头数据
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});
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</script>
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<style scoped>
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.camera-container {
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display: flex;
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}
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.camera-list {
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width: 20%;
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max-height: 90vh; /* 限制高度为一屏 */
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overflow-y: auto; /* 超出时滚动 */
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box-sizing: border-box;
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}
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.camera-item {
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margin-bottom: 5px;
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cursor: pointer;
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padding: 10px;
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}
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.camera-header {
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display: flex;
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justify-content: space-between;
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font-size: 14px;
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}
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.status {
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margin-left: 5px;
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}
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.camera-content {
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display: flex;
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align-items: center;
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}
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.camera-thumbnail {
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width: 60px;
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height: 40px;
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margin-right: 10px;
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}
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.camera-name {
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flex: 1;
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word-break: break-word; /* 文本超出时换行 */
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}
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.camera-details {
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width: 80%;
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padding: 10px;
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}
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.camera-large {
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width: 100%;
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height: 68vh;
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}
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.online {
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color: green;
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}
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.offline {
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color: red;
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}
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.stream-control {
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margin-top: 20px;
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text-align: center;
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}
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</style>
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