添加截图（快照）功能

panlinlin

2021-05-08 e48fa711a3664bece9b3e58840a75fe7c05bc47c

 web_src/src/components/channelList.vue

@@ -30,9 +30,27 @@
            <el-table ref="channelListTable" :data="deviceChannelList" :height="winHeight" border style="width: 100%">
                <el-table-column prop="channelId" label="通道编号" width="210">
                </el-table-column>
                <el-table-column prop="channelId" label="设备编号" width="210">
                <el-table-column prop="deviceId" label="设备编号" width="210">
                </el-table-column>
                <el-table-column prop="name" label="通道名称">
                </el-table-column>
                <el-table-column label="快照" width="80" align="center">
                  <template slot-scope="scope">
                    <img style="max-height: 3rem;max-width: 4rem;"
                         :id="scope.row.deviceId + '_' + scope.row.channelId"
                         :src="getSnap(scope.row)"
                         @error="getSnapErrorEvent($event.target.id)"
                         alt="">
<!--                    <el-image-->
<!--                      :id="'snapImg_' + scope.row.deviceId + '_' + scope.row.channelId"-->
<!--                      :src="getSnap(scope.row)"-->
<!--                      @error="getSnapErrorEvent($event, scope.row)"-->
<!--                      :fit="'contain'">-->
<!--                      <div slot="error" class="image-slot">-->
<!--                        <i class="el-icon-picture-outline"></i>-->
<!--                      </div>-->
<!--                    </el-image>-->
                  </template>
                </el-table-column>
                <el-table-column prop="subCount" label="子节点数">
                </el-table-column>
@@ -100,7 +118,8 @@
            total: 0,
            beforeUrl: "/deviceList",
            isLoging: false,
            autoList: true
            autoList: true,
            loadSnap:{}
        };
    },

@@ -122,7 +141,6 @@
            } else {
                this.showSubchannels();
            }

        },
        initParam: function () {
            this.deviceId = this.$route.params.deviceId;
@@ -174,8 +192,6 @@
            }).catch(function (error) {
                console.log(error);
            });


        },

        //通知设备上传媒体流
@@ -190,18 +206,22 @@
                method: 'get',
                url: '/api/play/start/' + deviceId + '/' + channelId
            }).then(function (res) {
                console.log(res.data)
                let streamId = res.data.streamId;
                that.isLoging = false;
                if (!!streamId) {
                    // that.$refs.devicePlayer.play(res.data, deviceId, channelId, itemData.hasAudio);
                    that.$refs.devicePlayer.openDialog("media", deviceId, channelId, {
                        streamInfo: res.data,
                        hasAudio: itemData.hasAudio
                    });
                    that.initData();
                } else {
                    that.$message.error(res.data);
                if (res.data.code == 0) {

                  setTimeout(()=>{
                    console.log("下载截图")
                    let snapId = deviceId + "_" + channelId;
                    that.loadSnap[snapId] = 0;
                    that.getSnapErrorEvent(snapId)
                  },5000)
                  that.$refs.devicePlayer.openDialog("media", deviceId, channelId, {
                    streamInfo: res.data.data,
                    hasAudio: itemData.hasAudio
                  });
                  that.initData();
                }else {
                  that.$message.error(res.data.msg);
                }
            }).catch(function (e) {});
        },
@@ -228,7 +248,24 @@
              }
            });
        },
        getSnap: function (row){
          return '/static/snap/' + row.deviceId + '_' + row.channelId + '.jpg'
        },
        getSnapErrorEvent: function (id){

          if (typeof (this.loadSnap[id]) != "undefined") {
            console.log("下载截图" + this.loadSnap[id])
            if (this.loadSnap[id] > 5) {
              delete this.loadSnap[id];
              return;
            }
            setTimeout(()=>{
              this.loadSnap[id] ++
              document.getElementById(id).setAttribute("src", '/static/snap/' + id + '.jpg?' + new Date().getTime())
            },1000)

          }
        },
        showDevice: function () {
            this.$router.push(this.beforeUrl).then(() => {
                this.initParam();