Pa_RefreshDevice functionality

src/common/pa_front.c

@@ -743,6 +743,55 @@ PaDeviceIndex Pa_GetDefaultOutputDevice( void )
 }
 
 
+PaError Pa_RefreshDevices( void )
+ {
+     int i, baseDeviceIndex;
+     PaError result = paNoError;
+
+     PA_LOGAPI_ENTER( "Pa_RefreshDeviceList" );
+     if( !PA_IS_INITIALISED_ )
+         return paNotInitialized;
+
+     baseDeviceIndex = 0;
+     deviceCount_ = 0;
+
+     for( i=0; i < hostApisCount_; ++i )
+     {
+         PaUtilHostApiRepresentation *hostApi = hostApis_[i];
+         if( hostApi->RefreshDevices == NULL )
+         {
+             /* RefreshDevices not yet implemented for this backend. Just
+                assume that the baseDeviceIndex and the deviceCount_ are
+                incremented according to the values in the info */
+             baseDeviceIndex += hostApi->info.deviceCount;
+             deviceCount_ += hostApi->info.deviceCount;
+             continue;
+         }
+
+         PA_DEBUG(( "refreshing device list for host api %d.\n",i));
+
+         if(( result = hostApi->RefreshDevices( hostApi, i )) != paNoError )
+            return result;
+
+         assert( hostApi->info.defaultInputDevice < hostApi->info.deviceCount );
+         assert( hostApi->info.defaultOutputDevice < hostApi->info.deviceCount );
+
+         hostApi->privatePaFrontInfo.baseDeviceIndex = baseDeviceIndex;
+
+         if( hostApi->info.defaultInputDevice != paNoDevice )
+             hostApi->info.defaultInputDevice += baseDeviceIndex;
+
+         if( hostApi->info.defaultOutputDevice != paNoDevice )
+             hostApi->info.defaultOutputDevice += baseDeviceIndex;
+
+         baseDeviceIndex += hostApi->info.deviceCount;
+         deviceCount_ += hostApi->info.deviceCount;
+     }
+
+     return result;
+ }
+
+
 const PaDeviceInfo* Pa_GetDeviceInfo( PaDeviceIndex device )
 {
     int hostSpecificDeviceIndex;