新增设备主子码流选择，默认为不开启

src/main/java/com/genersoft/iot/vmp/common/StreamInfo.java

@@ -528,4 +528,31 @@ public class StreamInfo implements Serializable, Cloneable{
         }
         return instance;
     }
+
+
+    /*=========================设备主子码流逻辑START====================*/
+    @Schema(description = "是否为子码流(true-是，false-主码流)")
+    private boolean subStream;
+
+    public boolean isSubStream() {
+        return subStream;
+    }
+
+    public void setSubStream(boolean subStream) {
+        this.subStream = subStream;
+    }
+
+    public static String getPlayStream(String deviceId,String channelId,boolean isSubStream){
+        String streamId;
+        if(isSubStream){
+            streamId = String.format("%s_%s_%s","sub",deviceId, channelId);
+        }else {
+            streamId = String.format("%s_%s_%s","main", deviceId, channelId);
+        }
+        return streamId;
+    }
+
+    /*=========================设备主子码流逻辑END====================*/
+
+
 }