X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fappleutility%2FCAAudioUnit.cpp;h=54c4ecef2f10ef71099ec03deb6d3690d2fb33e7;hb=bbece8f8d99c0bc2770291b5bf39e9fdff843c8b;hp=9244877d29f27e9e9d52ae753b82bebe2f74a21c;hpb=449aab3c465bbbf66d221fac3d7ea559f1720357;p=ardour.git

diff --git a/libs/appleutility/CAAudioUnit.cpp b/libs/appleutility/CAAudioUnit.cpp
index 9244877d29..54c4ecef2f 100644
--- a/libs/appleutility/CAAudioUnit.cpp
+++ b/libs/appleutility/CAAudioUnit.cpp
@@ -191,7 +191,7 @@ private:
 private:
 		// get the compiler to tell us when we do a bad thing!!!
 	AUState () {}
-	AUState (const AUState&) {}
+        AUState (const AUState& other) : CAReferenceCounted (other) {}
 	AUState& operator= (const AUState&) { return *this; } 
 };						
 						
@@ -305,8 +305,8 @@ bool		CAAudioUnit::CanDo (	int 				inChannelsIn,
 		// is expected to deal with same channel valance in and out
 	if (result) 
 	{
-		if (Comp().Desc().IsEffect() && (inChannelsIn == inChannelsOut)
-			|| Comp().Desc().IsOffline() && (inChannelsIn == inChannelsOut))
+		if ((Comp().Desc().IsEffect() && (inChannelsIn == inChannelsOut))
+			|| (Comp().Desc().IsOffline() && (inChannelsIn == inChannelsOut)))
 		{
 			return true;
 		}
@@ -328,6 +328,81 @@ bool		CAAudioUnit::CanDo (	int 				inChannelsIn,
 	return ValidateChannelPair (inChannelsIn, inChannelsOut, info.mChanInfo, (dataSize / sizeof (AUChannelInfo)));
 }
 
+int    CAAudioUnit::GetChannelInfo (AUChannelInfo** chaninfo, UInt32& cnt)
+{
+	// this is the default assumption of an audio effect unit
+	Boolean* isWritable = 0;
+	UInt32	dataSize = 0;
+		// lets see if the unit has any channel restrictions
+	OSStatus result = AudioUnitGetPropertyInfo (AU(),
+						    kAudioUnitProperty_SupportedNumChannels,
+						    kAudioUnitScope_Global, 0,
+						    &dataSize, isWritable); //don't care if this is writable
+	
+	// if this property is NOT implemented an FX unit
+	// is expected to deal with same channel valance in and out
+	
+	if (result) 
+	{
+		if (Comp().Desc().IsEffect()) 
+		{
+			return 1;
+		}
+		else if (Comp().Desc().IsGenerator() || Comp().Desc().IsMusicDevice()) {
+			// directly query Bus Formats
+			// Note that that these may refer to different subBusses
+			// (eg. Kick, Snare,.. on a Drummachine)
+			// eventually the Bus-Name for each configuration should be exposed
+			// for the User to select..
+
+			UInt32 elCountIn, elCountOut;
+
+			if (GetElementCount (kAudioUnitScope_Input, elCountIn)) return -1;
+			if (GetElementCount (kAudioUnitScope_Output, elCountOut)) return -1;
+
+			cnt = std::max(elCountIn, elCountOut);
+
+			*chaninfo = (AUChannelInfo*) malloc (sizeof (AUChannelInfo) * cnt);
+
+			for (unsigned int i = 0; i < elCountIn; ++i) {
+				UInt32 numChans;
+				if (NumberChannels (kAudioUnitScope_Input, i, numChans)) return -1;
+				(*chaninfo)[i].inChannels = numChans;
+			}
+			for (unsigned int i = elCountIn; i < cnt; ++i) {
+				(*chaninfo)[i].inChannels = 0;
+			}
+
+			for (unsigned int i = 0; i < elCountOut; ++i) {
+				UInt32 numChans;
+				if (NumberChannels (kAudioUnitScope_Output, i, numChans)) return -1;
+				(*chaninfo)[i].outChannels = numChans;
+			}
+			for (unsigned int i = elCountOut; i < cnt; ++i) {
+				(*chaninfo)[i].outChannels = 0;
+			}
+			return 0;
+		}
+		else 
+		{
+			// the au should either really tell us about this
+			// or we will assume the worst
+			return -1;
+		}
+	}
+
+	*chaninfo = (AUChannelInfo*) malloc (dataSize);
+	cnt = dataSize / sizeof (AUChannelInfo);
+
+	result = GetProperty (kAudioUnitProperty_SupportedNumChannels,
+			      kAudioUnitScope_Global, 0,
+			      *chaninfo, &dataSize);
+
+	if (result) { return -1; }
+	return 0;
+}
+
+
 bool	CAAudioUnit::ValidateChannelPair (int 				inChannelsIn, 
 										int 				inChannelsOut,
 										const AUChannelInfo * info,
@@ -1044,13 +1119,13 @@ bool		CAAudioUnit::HasCustomView () const
 OSStatus		CAAudioUnit::GetParameter(AudioUnitParameterID inID, AudioUnitScope scope, AudioUnitElement element,
 											Float32 &outValue) const
 {
-	return mDataPtr ? mDataPtr->GetParameter (inID, scope, element, outValue) : paramErr;
+	return mDataPtr ? (OSStatus) mDataPtr->GetParameter (inID, scope, element, outValue) : paramErr;
 }
 
 OSStatus		CAAudioUnit::SetParameter(AudioUnitParameterID inID, AudioUnitScope scope, AudioUnitElement element,
 											Float32 value, UInt32 bufferOffsetFrames)
 {
-	return mDataPtr ? mDataPtr->SetParameter (inID, scope, element, value, bufferOffsetFrames) : paramErr;
+	return mDataPtr ? (OSStatus) mDataPtr->SetParameter (inID, scope, element, value, bufferOffsetFrames) : paramErr;
 }
 
 OSStatus		CAAudioUnit::MIDIEvent (UInt32			inStatus,
@@ -1058,7 +1133,7 @@ OSStatus		CAAudioUnit::MIDIEvent (UInt32			inStatus,
 								UInt32					inData2,
 								UInt32					inOffsetSampleFrame)
 {
-	return mDataPtr ? mDataPtr->MIDIEvent (inStatus, inData1, inData2, inOffsetSampleFrame) : paramErr;
+	return mDataPtr ? (OSStatus) mDataPtr->MIDIEvent (inStatus, inData1, inData2, inOffsetSampleFrame) : paramErr;
 }
 
 OSStatus	CAAudioUnit::StartNote (MusicDeviceInstrumentID		inInstrument,
@@ -1067,15 +1142,15 @@ OSStatus	CAAudioUnit::StartNote (MusicDeviceInstrumentID		inInstrument,
 									UInt32						inOffsetSampleFrame,
 									const MusicDeviceNoteParams * inParams)
 {
-	return mDataPtr ? mDataPtr->StartNote (inInstrument, inGroupID, outNoteInstanceID, inOffsetSampleFrame, inParams) 
-					: paramErr;
+	return mDataPtr ? (OSStatus) mDataPtr->StartNote (inInstrument, inGroupID, outNoteInstanceID, inOffsetSampleFrame, inParams) 
+		: paramErr;
 }
 
 OSStatus	CAAudioUnit::StopNote (MusicDeviceGroupID		inGroupID,
 									NoteInstanceID				inNoteInstanceID,
 									UInt32						inOffsetSampleFrame)
 {
-	return mDataPtr ? mDataPtr->StopNote (inGroupID, inNoteInstanceID, inOffsetSampleFrame) : paramErr;
+	return mDataPtr ? (OSStatus) mDataPtr->StopNote (inGroupID, inNoteInstanceID, inOffsetSampleFrame) : paramErr;
 }
 
 #pragma mark __Render
@@ -1086,7 +1161,7 @@ OSStatus		CAAudioUnit::Render (AudioUnitRenderActionFlags 			* ioActionFlags,
 												UInt32						inNumberFrames,
 												AudioBufferList				* ioData)
 {
-	return mDataPtr ? mDataPtr->Render (ioActionFlags, inTimeStamp, inOutputBusNumber, inNumberFrames, ioData) : paramErr;
+	return mDataPtr ? (OSStatus) mDataPtr->Render (ioActionFlags, inTimeStamp, inOutputBusNumber, inNumberFrames, ioData) : paramErr;
 }
 
 static AURenderCallbackStruct sRenderCallback;