use mutexlocker class for nicer code

src/channel.cpp

@@ -611,6 +611,8 @@ CChannel::CChannel() : sName ( "" ),
 
 void CChannel::SetEnable ( const bool bNEnStat )
 {
+    QMutexLocker locker ( &Mutex );
+
     // set internal parameter
     bIsEnabled = bNEnStat;
 
@@ -624,8 +626,8 @@ void CChannel::SetEnable ( const bool bNEnStat )
 void CChannel::SetNetwInBlSiFactAndCompr ( const int iNewBlockSizeFactor,
                                            const CAudioCompression::EAudComprType eNewAudComprType )
 {
-    Mutex.lock();
-    {
+    QMutexLocker locker ( &Mutex );
+
     // store new value
     iCurNetwInBlSiFact = iNewBlockSizeFactor;
 
@@ -640,13 +642,11 @@ void CChannel::SetNetwInBlSiFactAndCompr ( const int iNewBlockSizeFactor,
     // socket buffer must be adjusted
     SetSockBufSizeIntern ( GetSockBufSize() );
 }
-    Mutex.unlock();
-}
 
 void CChannel::SetNetwBufSizeFactOut ( const int iNewNetwBlSiFactOut )
 {
-    Mutex.lock();
-    {
+    QMutexLocker locker ( &Mutex );
+
     // store new value
     iCurNetwOutBlSiFact = iNewNetwBlSiFactOut;
 
@@ -657,8 +657,6 @@ void CChannel::SetNetwBufSizeFactOut ( const int iNewNetwBlSiFactOut )
     // init conversion buffer
     ConvBuf.Init ( iNewNetwBlSiFactOut * MIN_BLOCK_SIZE_SAMPLES );
 }
-    Mutex.unlock();
-}
 
 void CChannel::SetAudioCompressionOut ( const CAudioCompression::EAudComprType eNewAudComprTypeOut )
 {
@@ -673,13 +671,10 @@ void CChannel::SetAudioCompressionOut ( const CAudioCompression::EAudComprType e
 
 void CChannel::SetSockBufSize ( const int iNumBlocks )
 {
-    // this opperation must be done with mutex
-    Mutex.lock();
-    {
+    QMutexLocker locker ( &Mutex ); // this opperation must be done with mutex
+
     SetSockBufSizeIntern ( iNumBlocks );
 }
-    Mutex.unlock();
-}
 
 void CChannel::SetSockBufSizeIntern ( const int iNumBlocks )
 {
@@ -697,32 +692,28 @@ void CChannel::SetSockBufSizeIntern ( const int iNumBlocks )
 
 void CChannel::SetGain ( const int iChanID, const double dNewGain )
 {
-    Mutex.lock();
-    {
+    QMutexLocker locker ( &Mutex );
+
     // set value (make sure channel ID is in range)
     if ( ( iChanID >= 0 ) && ( iChanID < MAX_NUM_CHANNELS ) )
     {
         vecdGains[iChanID] = dNewGain;
     }
 }
-    Mutex.unlock();
-}
 
 double CChannel::GetGain ( const int iChanID )
 {
-    double dReturnVal = 0;
+    QMutexLocker locker ( &Mutex );
 
-    Mutex.lock();
-    {
     // get value (make sure channel ID is in range)
     if ( ( iChanID >= 0 ) && ( iChanID < MAX_NUM_CHANNELS ) )
     {
-            dReturnVal = vecdGains[iChanID];
+        return vecdGains[iChanID];
     }
+    else
+    {
+        return 0;
     }
-    Mutex.unlock();
-
-    return dReturnVal;
 }
 
 void CChannel::SetName ( const QString strNewName )
@@ -751,15 +742,9 @@ QString CChannel::GetName()
 {
     // make sure the string is not written at the same time when it is
     // read here -> use mutex to secure access
-    QString strReturn;
+    QMutexLocker locker ( &Mutex );
 
-    Mutex.lock();
-    {
-        strReturn = sName;
-    }
-    Mutex.unlock();
-
-    return strReturn;
+    return sName;
 }
 
 void CChannel::OnSendProtMessage ( CVector<uint8_t> vecMessage )
@@ -799,25 +784,19 @@ void CChannel::OnChangeChanName ( QString strName )
 
 bool CChannel::GetAddress(CHostAddress& RetAddr)
 {
-    bool bReturnFlag;
+    QMutexLocker locker ( &Mutex );
 
-    Mutex.lock();
-    {
     if ( IsConnected() )
     {
         RetAddr = InetAddr;
-            bReturnFlag = true;
+        return true;
     }
     else
     {
         RetAddr = CHostAddress();
-            bReturnFlag = false;
+        return false;
     }
 }
-    Mutex.unlock();
-
-    return bReturnFlag;
-}
 
 EPutDataStat CChannel::PutData ( const CVector<unsigned char>& vecbyData,
                                  int iNumBytes )
@@ -946,11 +925,11 @@ EPutDataStat CChannel::PutData ( const CVector<unsigned char>& vecbyData,
 
 EGetDataStat CChannel::GetData ( CVector<double>& vecdData )
 {
+    QMutexLocker locker ( &Mutex );
+
     // init with ok flag
     EGetDataStat eGetStatus = GS_BUFFER_OK;
 
-    Mutex.lock(); // get mutex lock
-    {
     if ( !SockBuf.Get ( vecdData ) )
     {
         // decrease time-out counter
@@ -975,20 +954,18 @@ EGetDataStat CChannel::GetData ( CVector<double>& vecdData )
             eGetStatus = GS_CHAN_NOT_CONNECTED;
         }
     }
-    }
-    Mutex.unlock(); // get mutex unlock
 
     return eGetStatus;
 }
 
 CVector<unsigned char> CChannel::PrepSendPacket ( const CVector<short>& vecsNPacket )
 {
+    QMutexLocker locker ( &Mutex );
+
     // if the block is not ready we have to initialize with zero length to
     // tell the following network send routine that nothing should be sent
     CVector<unsigned char> vecbySendBuf ( 0 );
 
-    Mutex.lock(); // get mutex lock
-    {
     // use conversion buffer to convert sound card block size in network
     // block size
     if ( ConvBuf.Put ( vecsNPacket ) )
@@ -997,8 +974,6 @@ CVector<unsigned char> CChannel::PrepSendPacket ( const CVector<short>& vecsNPac
         vecbySendBuf.Init ( iAudComprSizeOut );
         vecbySendBuf = AudioCompressionOut.Encode ( ConvBuf.Get() );
     }
-    }
-    Mutex.unlock(); // get mutex unlock
 
     return vecbySendBuf;
 }