feat(video): 实现后台转码视频播放功能

- 新增“播放后台转码视频”按钮，用于启动转码并播放HLS流- 替换原有大华设备直接播放逻辑为调用后端转码接口
- 引入HLS.js库以支持HLS流播放，并增加错误处理机制
- 修改播放器组件，移除默认控制栏，增加定时检测转码进度逻辑
- 实现转码开始与停止接口调用，增强播放流程的可控性
- 更新弹窗标题与关闭逻辑，优化用户体验
- 调整视频播放器样式，提升视觉效果与兼容性

src/views/video_manager/video_manager/components/playVideo.vue

@@ -1,29 +1,22 @@
 <template>
-  <el-dialog v-model="dialogVisible" title="视频播放" width="50%" @close="handleStop">
-    <!-- 原生video播放器 -->
-    <video 
-      ref="videoRef" 
-      playsinline 
-      controls 
-      class="video-player"
-      @error="handleVideoError"
-    ></video>
+  <el-dialog v-model="dialogVisible" title="播放后台转码视频" width="50%">
+    <!-- 原生video播放器 - 移除了controls属性以去掉默认控制栏 -->
+    <video ref="videoRef" playsinline class="video-player"></video>
 
     <!-- 底部操作按钮 -->
     <template #footer>
-      <el-button type="primary" @click="handleStopPreview">
-        停止播放
-      </el-button>
-      <el-button @click="dialogVisible = false">
-        关闭
+      <el-button type="primary" @click="dialogVisible = false">
+        关闭播放
       </el-button>
     </template>
   </el-dialog>
 </template>
 
 <script setup>
-import { ref, watch, onBeforeUnmount } from "vue";
+import { ref, watch } from "vue";
+import Hls from "hls.js"; // 引入HLS解析库
 import { ElMessage } from "element-plus";
+import { getTranscodeStatus, stopTransCode } from "@/request/video_info.js"; // 后端“停止转码”接口
 
 // 接收父组件传递的属性
 const props = defineProps({
@@ -33,42 +26,61 @@ const props = defineProps({
   },
   src: {
     type: String,
-    default: ""
+    required: true, // 必须传递HLS流地址
+  },
+  videoId: {
+    type: String,
+    required: true, // 视频Id
   },
-  channel: {
-    type: Number,
-    default: 0
-  }
 });
 
 // 向父组件传递事件
-const emit = defineEmits(["update:visible"]);
+const emit = defineEmits(["update:visible", "onStop"]);
 
 // 控制弹窗显示（内部响应props.visible）
 const dialogVisible = ref(props.visible);
 const videoRef = ref(null); // video元素引用
+const isPlaying = ref(false); // 视频播放状态
+let hlsInstance = null; // HLS实例（用于管理流解析）
 
 // 监听父组件visible变化，同步到内部dialogVisible
 watch(
-  () => props.visible,
-  (newVal) => {
-    dialogVisible.value = newVal;
-    if (newVal) {
-      // 延迟一点播放视频，确保DOM已更新
-      setTimeout(() => {
-        handlePlay();
-      }, 100);
-    } else {
-      handleStop();
+    () => props.visible,
+    (newVal) => {
+      dialogVisible.value = newVal;
     }
-  }
 );
 
+// 定义定时器变量
+let checkInterval = null;
+
+// 弹窗打开时执行的方法
+const onDialogOpen = () => {
+  // 每3秒调用一次接口
+  checkInterval = setInterval(async () => {
+    try {
+      // 假设接口名为checkVideoProgress，需自行导入
+      const response = await getTranscodeStatus({ id: props.videoId });
+      if (response.progress > 2) {
+        handlePlay();
+        // 播放后清除定时器
+        if (checkInterval) {
+          clearInterval(checkInterval);
+          checkInterval = null;
+        }
+      }
+      // 可根据需要处理接口返回结果
+    } catch (error) {}
+  }, 3000); // 3秒间隔
+};
+
 // 监听内部dialogVisible变化，通知父组件
 watch(dialogVisible, (newVal) => {
   emit("update:visible", newVal);
-  if (!newVal) {
-    handleStop();
+  if (newVal) {
+    onDialogOpen();
+  } else {
+    destroyPlayer(); // 弹窗关闭时销毁播放器
   }
 });
 
@@ -80,68 +92,115 @@ const handlePlay = () => {
     return;
   }
 
+  // 先清空之前的资源
+  video.src = "";
+
+  // 检查src是否有效
   if (!props.src) {
     ElMessage.error("视频源地址为空");
     return;
   }
 
-  // 设置视频源
-  video.src = props.src;
-
-  // 尝试播放视频
-  video.play().then(() => {
-    ElMessage.success("视频开始播放");
-  }).catch((err) => {
-    ElMessage.error(`播放失败：${err.message}`);
-  });
-};
-
-// 停止播放
-const handleStop = () => {
-  const video = videoRef.value;
-  if (video) {
-    video.pause();
-    video.removeAttribute('src'); // 移除src属性
-    video.load(); // 重新加载以清空视频内容
-  }
-};
-
-// 处理视频错误
-const handleVideoError = (e) => {
-  console.error("视频播放错误:", e);
-  ElMessage.error("视频播放出现错误，请检查网络连接或设备状态");
-};
-
-// 停止预览
-const handleStopPreview = async () => {
-  try {
-    const response = await fetch('/dahuaVideo/stopPreview', {
-      method: 'POST',
-    });
-    const result = await response.json();
-    if (result.success) {
-      ElMessage.success("停止预览成功");
-      handleStop();
-    } else {
-      ElMessage.error("停止预览失败: " + result.message);
+  // HLS.js 支持检测
+  if (Hls.isSupported()) {
+    // 如果已有实例，先销毁
+    if (hlsInstance) {
+      hlsInstance.destroy();
     }
-  } catch (error) {
-    ElMessage.error("停止预览失败: " + (error.message || "未知错误"));
+
+    hlsInstance = new Hls({
+      maxBufferLength: 30, // 增加缓冲长度
+      maxMaxBufferLength: 60,
+    });
+
+    // 监听错误事件
+    hlsInstance.on(Hls.Events.ERROR, (event, data) => {
+      if (data.fatal) {
+        switch (data.type) {
+          case Hls.ErrorTypes.NETWORK_ERROR:
+            hlsInstance.startLoad();
+            break;
+          case Hls.ErrorTypes.MEDIA_ERROR:
+            hlsInstance.recoverMediaError();
+            break;
+          default:
+            // 无法恢复的错误，需要重新初始化
+            destroyPlayer();
+            handlePlay();
+            break;
+        }
+      }
+    });
+
+    hlsInstance.loadSource(props.src);
+    hlsInstance.attachMedia(video);
+
+    hlsInstance.on(Hls.Events.MANIFEST_PARSED, () => {
+      video.play().then(() => {
+        isPlaying.value = true;
+      });
+    });
+  } else if (video.canPlayType("application/vnd.apple.mpegurl")) {
+    // Safari等原生支持HLS的浏览器
+    video.src = props.src;
+    video.addEventListener("loadedmetadata", () => {
+      video
+          .play()
+          .then(() => {
+            isPlaying.value = true;
+            ElMessage.success("视频开始播放");
+          })
+          .catch((err) => {
+            ElMessage.error(`播放失败：${err.message}`);
+          });
+    });
+  } else {
+    ElMessage.error("您的浏览器不支持HLS视频流播放，请更换浏览器");
   }
 };
 
-// 组件卸载前停止播放
-onBeforeUnmount(() => {
-  handleStop();
-});
+// 销毁播放器时清除定时器
+const destroyPlayer = () => {
+  // 清除定时器
+  if (checkInterval) {
+    clearInterval(checkInterval);
+    checkInterval = null;
+  }
+
+  // 原有逻辑保持不变
+  isPlaying.value = false;
+  if (hlsInstance) {
+    hlsInstance.destroy();
+    hlsInstance = null;
+  }
+  if (videoRef.value) {
+    const video = videoRef.value;
+    video.pause();
+    video.src = "";
+  }
+  handleStopTranscode();
+};
+
+// 停止转码（调用后端接口）
+const handleStopTranscode = async () => {
+  try {
+    await stopTransCode({ id: props.videoId }); // 调用后端“停止转码”接口
+    emit("onStop"); // 通知父组件“转码已停止”
+    dialogVisible.value = false; // 关闭弹窗
+  } catch (error) {
+    if (error !== "cancel") {
+      ElMessage.error(`停止转码失败：${error.message || "未知错误"}`);
+    }
+  }
+};
 </script>
 
 <style scoped>
 .video-player {
   width: 100%;
   min-height: 600px;
-  object-fit: contain;
-  background-color: #000;
+  object-fit: contain; /* 保持视频比例 */
+  background-color: #000; /* 增加黑色背景，使视频区域更明显 */
 }
 
 .video-controls {

src/views/video_manager/video_manager/index.vue

@@ -2,9 +2,9 @@
   <div>
     <el-card>
       <el-form
-        :model="searchForm"
-        label-width="60px"
-        @submit.prevent="fnResetPagination"
+          :model="searchForm"
+          label-width="60px"
+          @submit.prevent="fnResetPagination"
       >
         <el-row>
           <el-col :span="6">
@@ -16,7 +16,10 @@
             <el-form-item label-width="10px">
               <el-button type="primary" native-type="submit">搜索</el-button>
               <el-button native-type="reset" @click="fnResetPagination"
-                >重置</el-button
+              >重置</el-button
+              >
+              <el-button type="success" @click="handleStartTranscode"
+              >播放后台转码视频</el-button
               >
             </el-form-item>
           </el-col>
@@ -26,9 +29,9 @@
 
     <layout-card>
       <layout-table
-        v-model:pagination="pagination"
-        :data="list"
-        @get-data="fnGetData"
+          v-model:pagination="pagination"
+          :data="list"
+          @get-data="fnGetData"
       >
         <!-- 表格列定义（保持不变） -->
         <el-table-column label="序号" width="70">
@@ -42,9 +45,9 @@
         <el-table-column property="PLS_ID" label="是否定位">
           <template #default="{ row }">
             <el-popover
-              placement="top-start"
-              trigger="hover"
-              content="定位后才能在Bi页上展示"
+                placement="top-start"
+                trigger="hover"
+                content="定位后才能在Bi页上展示"
             >
               <template #reference>
                 <el-tag v-if="row.PLS_ID" type="success"> 是 </el-tag>
@@ -56,25 +59,25 @@
         <el-table-column label="操作" width="250">
           <template #default="{ row }">
             <el-button
-              v-if="row.ISSHOW === 0"
-              type="primary"
-              text
-              link
-              @click="fnUpToBi(row.videomanagerId)"
-              >置顶</el-button
+                v-if="row.ISSHOW === 0"
+                type="primary"
+                text
+                link
+                @click="fnUpToBi(row.videomanagerId)"
+            >置顶</el-button
             >
             <!--            <el-button type="primary" text link @click="fnSetPositioning(row)">-->
             <!--              {{ row.PLS_ID ? "修改定位" : "添加定位" }}-->
             <!--            </el-button>-->
             <el-button link type="primary" @click="fnPreviewVideo(row)"
-              >播放视频</el-button
+            >播放视频</el-button
             >
             <el-button
-              v-if="row.videomanagerId"
-              link
-              type="danger"
-              @click="fnDeleteVideo(row)"
-              >移除定位</el-button
+                v-if="row.videomanagerId"
+                link
+                type="danger"
+                @click="fnDeleteVideo(row)"
+            >移除定位</el-button
             >
           </template>
         </el-table-column>
@@ -83,37 +86,38 @@
 
     <!-- 其他弹窗（保持不变） -->
     <add
-      v-model:visible="data.addDialog.Visible"
-      v-model:form="data.addDialog.form"
-      :type="data.addDialog.type"
-      @get-data="fnResetPagination"
+        v-model:visible="data.addDialog.Visible"
+        v-model:form="data.addDialog.form"
+        :type="data.addDialog.type"
+        @get-data="fnResetPagination"
     />
     <layout-video
-      v-if="data.videoDialog.visible"
-      v-model:visible="data.videoDialog.visible"
-      :src="data.videoDialog.src"
+        v-if="data.videoDialog.visible"
+        v-model:visible="data.videoDialog.visible"
+        :src="data.videoDialog.src"
     />
     <selecting-points
-      :id="data.selectingPointsDialog.id"
-      v-model:visible="data.selectingPointsDialog.visible"
-      :index-code="data.selectingPointsDialog.indexCode"
-      :region-path-name="data.selectingPointsDialog.regionPathName"
-      :cam-name="data.selectingPointsDialog.camName"
-      :videomanager-id="data.selectingPointsDialog.videomanagerId"
-      @get-data="fnResetPagination"
+        :id="data.selectingPointsDialog.id"
+        v-model:visible="data.selectingPointsDialog.visible"
+        :index-code="data.selectingPointsDialog.indexCode"
+        :region-path-name="data.selectingPointsDialog.regionPathName"
+        :cam-name="data.selectingPointsDialog.camName"
+        :videomanager-id="data.selectingPointsDialog.videomanagerId"
+        @get-data="fnResetPagination"
     />
 
-    <!-- 大华视频播放器 -->
+    <!-- 转码视频播放器（修改后：双向绑定visible + 传递src） -->
     <play-video
-      v-model:visible="data.dahuaVideoDialog.visible"
-      :src="data.dahuaVideoDialog.src"
-      :channel="data.dahuaVideoDialog.channel"
+        v-model:visible="data.transcodeVideoDialog.visible"
+        :src="data.transcodeVideoDialog.src"
+        :video-id="data.transcodeVideoDialog.id"
+        @on-stop="onTranscodeStopped"
     />
   </div>
 </template>
 
 <script setup>
-import { serialNumber } from "@/assets/js/utils.js";
+import {serialNumber} from "@/assets/js/utils.js";
 import useListData from "@/assets/js/useListData.js";
 import {
   getHkVideoManagerList,
@@ -121,13 +125,13 @@ import {
   setVideoManagerDelete,
 } from "@/request/video_manager.js";
 import Add from "./components/add.vue";
-import { reactive } from "vue";
-import { ElMessage, ElMessageBox } from "element-plus";
+import {reactive} from "vue";
+import {ElMessage, ElMessageBox} from "element-plus";
 import SelectingPoints from "./components/selecting_points.vue";
 import LayoutVideo from "@/components/video/index.vue";
-import { setVideoManagerList } from "@/request/eightwork_videomanager.js";
-import PlayVideo from "@/views/video_manager/video_manager/components/playVideo.vue";
-import {loginDahua} from "@/request/video_info.js";
+import {setVideoManagerList} from "@/request/eightwork_videomanager.js";
+import PlayVideo from "@/views/video_manager/video_manager/components/playVideo.vue"; // 引入新播放器组件
+import {startTransCode, stopTransCode} from "@/request/video_info.js"; // 转码接口
 
 const data = reactive({
   addDialog: {
@@ -151,16 +155,31 @@ const data = reactive({
     videomanagerId: "",
     visible: false,
   },
-  dahuaVideoDialog: {
+  transcodeVideoDialog: {
     visible: false,
-    src: "",
-    channel: 0,
+    src: "http://localhost:8100/api/hls/stream.m3u8", // 后端转码后HLS流的访问路径
+    id: "",
   },
 });
 
+// 启动转码并显示播放器
+const handleStartTranscode = async () => {
+  try {
+    await startTransCode(); // 调用后端“启动转码”接口
+    data.transcodeVideoDialog.visible = true; // 显示播放器弹窗
+  } catch (error) {
+    ElMessage.error("启动转码失败: " + (error.message || "未知错误"));
+  }
+};
+
+// 转码停止后的回调
+const onTranscodeStopped = async () => {
+  await stopTransCode(); // 调用后端“停止转码”接口
+};
+
 // 列表数据逻辑（保持不变）
-const { list, pagination, searchForm, fnGetData, fnResetPagination } =
-  useListData(getHkVideoManagerList);
+const {list, pagination, searchForm, fnGetData, fnResetPagination} =
+    useListData(getHkVideoManagerList);
 
 // 其他方法（保持不变）
 // const fnSetPositioning = async (row) => {
@@ -176,28 +195,19 @@ const fnUpToBi = async (videomanagerId) => {
   await ElMessageBox.confirm("确定要置顶吗？置顶后将会默认展示在Bi页", {
     type: "warning",
   });
-  await setUpToBi({ videomanagerId });
-  ElMessage({ message: "操作成功", type: "success" });
+  await setUpToBi({videomanagerId});
+  ElMessage({message: "操作成功", type: "success"});
 };
 
 const fnPreviewVideo = async (row) => {
   try {
-    // 先登录大华设备
-    const loginResult = await loginDahua();
-    console.log("大华设备登录结果:", loginResult);
-
-    if (!loginResult.success) {
-      ElMessage.error("设备登录失败: " + loginResult.message);
-      return;
-    }
-
-    // 调用大华SDK接口播放视频
-    data.dahuaVideoDialog.visible = true;
-    data.dahuaVideoDialog.channel = row.PLS_ID || 0;
-    data.dahuaVideoDialog.src = `/dahuaVideo/start-preview?channel=${row.PLS_ID || 0}`;
+    const resData = await startTransCode({url: row.url, id: row.PLS_ID}); // 调用后端“启动转码”接口
+    data.transcodeVideoDialog.visible = true; // 显示播放器弹窗
+    data.transcodeVideoDialog.id = row.PLS_ID; // 显示播放器弹窗
+    data.transcodeVideoDialog.src =
+        "http://172.16.70.226:7811/" + resData.videoUrl + "stream.m3u8";
   } catch (error) {
-    console.error("播放视频过程出错:", error);
-    ElMessage.error("播放视频失败: " + (error.message || "未知错误"));
+    ElMessage.error("启动转码失败: " + (error.message || "未知错误"));
   }
 };
 
@@ -211,8 +221,8 @@ const fnDeleteVideo = async (row) => {
       return;
     }
     await ElMessageBox.confirm(
-      "移除定位将会结束视频推送，并删除推送信息。确定要移除定位吗？",
-      { type: "warning" }
+        "移除定位将会结束视频推送，并删除推送信息。确定要移除定位吗？",
+        {type: "warning"}
     );
     await setVideoManagerDelete({
       VIDEOMANAGER_ID: row.videomanagerId,