try to fix Misconfigured ASIO4ALL config can't be corrected #117

mac/sound.cpp

@@ -300,7 +300,7 @@ int CSound::CountChannels ( AudioDeviceID devID,
     return result;
 }
 
-QString CSound::LoadAndInitializeDriver ( int iDriverIdx )
+QString CSound::LoadAndInitializeDriver ( int iDriverIdx, bool )
 {
     // check device capabilities if it fullfills our requirements
     const QString strStat = CheckDeviceCapabilities ( iDriverIdx );

mac/sound.h

@@ -75,7 +75,7 @@ public:
     int            iSelOutputRightChannel;
 
 protected:
-    virtual QString  LoadAndInitializeDriver ( int iIdx );
+    virtual QString LoadAndInitializeDriver ( int iIdx, bool );
 
     QString  CheckDeviceCapabilities ( const int iDriverIdx );
     int CountChannels ( AudioDeviceID devID,

src/soundbase.cpp

@@ -124,7 +124,7 @@ QString CSoundBase::SetDev ( const int iNewDev )
         // driver
         UnloadCurrentDriver();
 
-        const QString strErrorMessage = LoadAndInitializeDriver ( iNewDev );
+        const QString strErrorMessage = LoadAndInitializeDriver ( iNewDev, false );
 
         if ( !strErrorMessage.isEmpty() )
         {
@@ -132,7 +132,7 @@ QString CSoundBase::SetDev ( const int iNewDev )
             {
                 // loading and initializing the new driver failed, go back to
                 // original driver and display error message
-                LoadAndInitializeDriver ( lCurDev );
+                LoadAndInitializeDriver ( lCurDev, false );
             }
             else
             {
@@ -167,7 +167,7 @@ QString CSoundBase::SetDev ( const int iNewDev )
             // the first available driver in the system. If this fails, too, we
             // throw an error that no driver is available -> it does not make
             // sense to start the software if no audio hardware is available.
-            if ( !LoadAndInitializeDriver ( iNewDev ).isEmpty() )
+            if ( !LoadAndInitializeDriver ( iNewDev, false ).isEmpty() )
             {
                 // loading and initializing the new driver failed, try to find
                 // at least one usable driver
@@ -183,8 +183,7 @@ QString CSoundBase::SetDev ( const int iNewDev )
         if ( bTryLoadAnyDriver )
         {
             // try to load and initialize any valid driver
-            QVector<QString> vsErrorList =
+            QVector<QString> vsErrorList = LoadAndInitializeFirstValidDriver();
-                LoadAndInitializeFirstValidDriver();
 
             if ( !vsErrorList.isEmpty() )
             {
@@ -201,6 +200,20 @@ QString CSoundBase::SetDev ( const int iNewDev )
                 }
                 sErrorMessage += "</ul>";
 
+#ifdef _WIN32
+                // to be able to access the ASIO driver setup for changing, e.g., the sample rate, we
+                // offer the user under Windows that we open the driver setups of all registered
+                // ASIO drivers
+                sErrorMessage = sErrorMessage + tr ( "<br/>Do you want to open the ASIO driver setups?" );
+
+                if ( QMessageBox::Yes == QMessageBox::information ( nullptr, APP_NAME, sErrorMessage, QMessageBox::Yes|QMessageBox::No ) )
+                {
+                    LoadAndInitializeFirstValidDriver ( true );
+                }
+
+                sErrorMessage = APP_NAME + tr ( " could not be started because of audio interface issues." );
+#endif
+
                 throw CGenErr ( sErrorMessage );
             }
         }
@@ -209,7 +222,7 @@ QString CSoundBase::SetDev ( const int iNewDev )
     return strReturn;
 }
 
-QVector<QString> CSoundBase::LoadAndInitializeFirstValidDriver()
+QVector<QString> CSoundBase::LoadAndInitializeFirstValidDriver ( const bool bOpenDriverSetup )
 {
     QVector<QString> vsErrorList;
 
@@ -221,7 +234,7 @@ QVector<QString> CSoundBase::LoadAndInitializeFirstValidDriver()
     while ( !bValidDriverDetected && ( iCurDriverIdx < lNumDevs ) )
     {
         // try to load and initialize current driver, store error message
-        const QString strCurError = LoadAndInitializeDriver ( iCurDriverIdx );
+        const QString strCurError = LoadAndInitializeDriver ( iCurDriverIdx, bOpenDriverSetup );
 
         vsErrorList.append ( strCurError );
 

src/soundbase.h

@@ -94,9 +94,9 @@ public:
 
 protected:
     // driver handling
-    virtual QString  LoadAndInitializeDriver ( int ) { return ""; }
+    virtual QString  LoadAndInitializeDriver ( int, bool ) { return ""; }
     virtual void     UnloadCurrentDriver() {}
-    QVector<QString> LoadAndInitializeFirstValidDriver();
+    QVector<QString> LoadAndInitializeFirstValidDriver ( const bool bOpenDriverSetup = false );
 
     // function pointer to callback function
     void (*fpProcessCallback) ( CVector<int16_t>& psData, void* arg );

windows/sound.cpp

@@ -40,7 +40,8 @@ CSound* pSound;
 /******************************************************************************\
 * Common                                                                       *
 \******************************************************************************/
-QString CSound::LoadAndInitializeDriver ( int iDriverIdx )
+QString CSound::LoadAndInitializeDriver ( int  iDriverIdx,
+                                          bool bOpenDriverSetup )
 {
     // load driver
     loadAsioDriver ( cDriverNames[iDriverIdx] );
@@ -67,6 +68,13 @@ QString CSound::LoadAndInitializeDriver ( int iDriverIdx )
     }
     else
     {
+        // if requested, open ASIO driver setup in case of an error
+        if ( bOpenDriverSetup )
+        {
+            OpenDriverSetup();
+            QMessageBox::question ( nullptr, APP_NAME, "Are you done with your ASIO driver settings of device " + GetDeviceName ( iDriverIdx ) + "?", QMessageBox::Yes );
+        }
+
         // driver cannot be used, clean up
         asioDrivers->removeCurrentDriver();
     }
@@ -480,12 +488,12 @@ CSound::CSound ( void       (*fpNewCallback) ( CVector<int16_t>& psData, void* a
                  const int  iCtrlMIDIChannel,
                  const bool bNoAutoJackConnect) :
     CSoundBase              ( "ASIO", true, fpNewCallback, arg, iCtrlMIDIChannel, bNoAutoJackConnect ),
-    vSelectedInputChannels  ( NUM_IN_OUT_CHANNELS ),
-    vSelectedOutputChannels ( NUM_IN_OUT_CHANNELS ),
     lNumInChan              ( 0 ),
     lNumInChanPlusAddChan   ( 0 ),
     lNumOutChan             ( 0 ),
-    dInOutLatencyMs         ( 0.0 ) // "0.0" means that no latency value is available
+    dInOutLatencyMs         ( 0.0 ), // "0.0" means that no latency value is available
+    vSelectedInputChannels  ( NUM_IN_OUT_CHANNELS ),
+    vSelectedOutputChannels ( NUM_IN_OUT_CHANNELS )
 {
     int i;
 

windows/sound.h

@@ -76,7 +76,8 @@ public:
     virtual double  GetInOutLatencyMs() { return dInOutLatencyMs; }
 
 protected:
-    virtual QString  LoadAndInitializeDriver ( int iIdx );
+    virtual QString  LoadAndInitializeDriver ( int  iIdx,
+                                               bool bOpenDriverSetup );
     virtual void     UnloadCurrentDriver();
     int              GetActualBufferSize ( const int iDesiredBufferSizeMono );
     QString          CheckDeviceCapabilities();