海康相机视频流平台集成

海康相机视频流集成在平台,需要使用海康提供的api,由于个别API不是特别清晰,将一个已经应用的组件共享,减少集成的时间。
总体流程:

1.根据相机绑定的账号获取相关相机信息

2.根据相机信息,使用服务器端技术获取acsessToken

3.根据accessToken和根据官方提供的API获取视频流

4.使用海康提供的插件和展示端进行显示

html 复制代码
<!--以下代码基于VUE开发-->
<template>
  <el-dialog
    v-model="dialogVisible"
    :title="dialogProps.title"
    width="900px"
    :close-on-click-modal="false"
    :destroy-on-close="true"
    @closed="onClosed"
  >
    <div class="video-preview-container">
      <!-- 萤石云播放 -->
      <div class="video-wrapper">
        <div id="ezPlayerContainer" class="ez-player" ref="videoRef"></div>
      </div>
    </div>
    <template #footer>
      <el-button @click="dialogVisible = false">关闭</el-button>
    </template>
  </el-dialog>
</template>

<script setup lang="ts" name="VideoPreview">
import { ref, onMounted, nextTick } from "vue";
import { ElMessage } from "element-plus";
import { useUserStore } from "@/stores/modules/user";
import axios from "axios";
// 海康提供的播放器插件
import { EZUIKitPlayer } from "ezuikit-js";
// accessToken需要服务器端根据设备信息获取
const accessToken = useUserStore().accessToken;
interface DialogProps {
  title: string;
  cameraCode: string;
  platform: string;
}

const dialogVisible = ref(false);
const dialogProps = ref<DialogProps>({
  title: "",
  cameraCode: "",
  platform: ""
});

const videoRef = ref<HTMLVideoElement | null>(null);

let ezPlayer: any = null;
const initEzPlayer = (streamUrl: string) => {
  // 4. 创建播放器实例
  ezPlayer = new EZUIKitPlayer({
    // 必须与容器 div 的 id 一致
    id: "ezPlayerContainer",
    // 播放地址 (ezopen协议)
    url: streamUrl,
    // 授权令牌
    accessToken: accessToken,
    // 模版决定插件的功能(比如截屏、对话、录音等功能)
    template: "security"
  });
};
// 接收父组件传过来的参数
const acceptParams = async (params: DialogProps) => {
  dialogProps.value = params;
  dialogVisible.value = true;
  await nextTick();
  // 通过调用萤石云接口获取播放视频
  axios({
    method: "post",
    url: "https://open.ys7.com/api/lapp/v2/live/address/get",
    headers: {
     // 重点:设置 Authorization 头
      Authorization: `Bearer ${accessToken}`,
      "Content-Type": "application/x-www-form-urlencoded"
    },
    // 需要再次携带accessToken为参数
    data: { accessToken: accessToken, deviceSerial: dialogProps.value.cameraCode } // 直接传入 URLSearchParams 对象,axios 会自动序列化
  }).then(res => {
    if (res.data.code !== "200") {
      ElMessage.error(res.data.msg);
    } else {
      initEzPlayer(res.data.data.url);
    }
  });
};

// 关闭时停止播放、清空内存
const onClosed = () => {
  if (ezPlayer) {
    ezPlayer.stop();
    ezPlayer = null;
  }
  if (videoRef.value) {
    videoRef.value.pause();
    videoRef.value.src = "";
  }
  dialogProps.value = {
    title: "",
    cameraCode: "",
    platform: ""
  };
};

defineExpose({
  acceptParams
});
</script>

<style scoped>
.video-preview-container {
  width: 100%;
  min-height: 450px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #000;
  border-radius: 4px;
}

.video-wrapper {
  width: 100%;
  min-height: 450px;
  display: flex;
  justify-content: center;
  #ezPlayerContainer {
    width: 100%;
    min-height: 450px;
    background-color: #000;
  }
}
</style>