for bug #235, refine the queue recv thread.

@@ -114,13 +114,13 @@ void SrsRecvThread::on_thread_stop()
 }
 
 SrsQueueRecvThread::SrsQueueRecvThread(SrsRtmpServer* rtmp_sdk, int timeout_ms)
-    : SrsRecvThread(this, rtmp_sdk, timeout_ms)
+    : trd(this, rtmp_sdk, timeout_ms)
 {
 }
 
 SrsQueueRecvThread::~SrsQueueRecvThread()
 {
-    stop();
+    trd.stop();
 
     // clear all messages.
     std::vector<SrsMessage*>::iterator it;
@@ -131,6 +131,16 @@ SrsQueueRecvThread::~SrsQueueRecvThread()
     queue.clear();
 }
 
+int SrsQueueRecvThread::start()
+{
+    return trd.start();
+}
+
+void SrsQueueRecvThread::stop()
+{
+    trd.stop();
+}
+
 bool SrsQueueRecvThread::empty()
 {
     return queue.empty();

@@ -87,14 +87,18 @@ public:
 * @see: SrsRtmpConn::playing
 * @see: https://github.com/winlinvip/simple-rtmp-server/issues/217
 */
-class SrsQueueRecvThread : virtual public ISrsMessageHandler, virtual public SrsRecvThread
+class SrsQueueRecvThread : virtual public ISrsMessageHandler
 {
 private:
     std::vector<SrsMessage*> queue;
+    SrsRecvThread trd;
 public:
     SrsQueueRecvThread(SrsRtmpServer* rtmp_sdk, int timeout_ms);
     virtual ~SrsQueueRecvThread();
 public:
+    virtual int start();
+    virtual void stop();
+public:
     virtual bool empty();
     virtual int size();
     virtual SrsMessage* pump();