/*
     File: MusicDeviceBase.cpp
 Abstract: MusicDeviceBase.h
  Version: 1.1

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 MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
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*/
#include "MusicDeviceBase.h"

// compatibility with older OS SDK releases
typedef OSStatus
(*TEMP_MusicDeviceMIDIEventProc)(	void *			inComponentStorage,
							UInt32					inStatus,
							UInt32					inData1,
							UInt32					inData2,
							UInt32					inOffsetSampleFrame);

typedef OSStatus
(*TEMP_MusicDeviceStartNoteProc)(	void *				inComponentStorage,
						MusicDeviceInstrumentID			inInstrument,
						MusicDeviceGroupID				inGroupID,
						NoteInstanceID *				outNoteInstanceID,
						UInt32							inOffsetSampleFrame,
						const MusicDeviceNoteParams *	inParams);

typedef OSStatus
(*TEMP_MusicDeviceStopNoteProc)(void *					inComponentStorage,
						MusicDeviceGroupID				inGroupID,
						NoteInstanceID					inNoteInstanceID,
						UInt32							inOffsetSampleFrame);

#if !CA_USE_AUDIO_PLUGIN_ONLY

static OSStatus		MusicDeviceBaseMIDIEvent(void *			inComponentStorage,
						UInt32				inStatus,
						UInt32				inData1,
						UInt32				inData2,
						UInt32				inOffsetSampleFrame);

static OSStatus		MusicDeviceBaseStartNote(	void *		inComponentStorage,
						MusicDeviceInstrumentID			inInstrument,
						MusicDeviceGroupID				inGroupID,
						NoteInstanceID *				outNoteInstanceID,
						UInt32							inOffsetSampleFrame,
						const MusicDeviceNoteParams *	inParams);

static OSStatus		MusicDeviceBaseStopNote(void *			inComponentStorage,
						MusicDeviceGroupID				inGroupID,
						NoteInstanceID					inNoteInstanceID,
						UInt32							inOffsetSampleFrame);

#endif

MusicDeviceBase::MusicDeviceBase(AudioComponentInstance			inInstance,
									UInt32						numInputs,
									UInt32						numOutputs,
									UInt32						numGroups)
	: AUBase(inInstance, numInputs, numOutputs, numGroups),
	  AUMIDIBase(this)
{
}

OSStatus			MusicDeviceBase::GetPropertyInfo(AudioUnitPropertyID	inID,
							AudioUnitScope				inScope,
							AudioUnitElement			inElement,
							UInt32 &				outDataSize,
							Boolean &				outWritable)
{
	OSStatus result;

	switch (inID)
	{
#if !TARGET_OS_IPHONE
		case kMusicDeviceProperty_InstrumentCount:
			if (inScope != kAudioUnitScope_Global) return kAudioUnitErr_InvalidScope;
			outDataSize = sizeof(UInt32);
			outWritable = false;
			result = noErr;
			break;
#endif
		default:
			result = AUBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);

			if (result == kAudioUnitErr_InvalidProperty)
				result = AUMIDIBase::DelegateGetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
			break;
	}
	return result;
}

OSStatus			MusicDeviceBase::GetProperty(	AudioUnitPropertyID			inID,
							AudioUnitScope 				inScope,
							AudioUnitElement		 	inElement,
							void *					outData)
{
	OSStatus result;

	switch (inID)
	{
#if !CA_USE_AUDIO_PLUGIN_ONLY
		case kAudioUnitProperty_FastDispatch:
			if (!IsCMgrObject()) return kAudioUnitErr_InvalidProperty;
			if (inElement == kMusicDeviceMIDIEventSelect) {
				*(TEMP_MusicDeviceMIDIEventProc *)outData = MusicDeviceBaseMIDIEvent;
				return noErr;
			}
			else if (inElement == kMusicDeviceStartNoteSelect) {
				*(TEMP_MusicDeviceStartNoteProc *)outData = MusicDeviceBaseStartNote;
				return noErr;
			}
			else if (inElement == kMusicDeviceStopNoteSelect) {
				*(TEMP_MusicDeviceStopNoteProc *)outData = MusicDeviceBaseStopNote;
				return noErr;
			}
			return kAudioUnitErr_InvalidElement;
#endif

#if !TARGET_OS_IPHONE
		case kMusicDeviceProperty_InstrumentCount:
			if (inScope != kAudioUnitScope_Global) return kAudioUnitErr_InvalidScope;
			return GetInstrumentCount (*(UInt32*)outData);
#endif
		default:
			result = AUBase::GetProperty (inID, inScope, inElement, outData);

			if (result == kAudioUnitErr_InvalidProperty)
				result = AUMIDIBase::DelegateGetProperty (inID, inScope, inElement, outData);
	}

	return result;
}


OSStatus			MusicDeviceBase::SetProperty(	AudioUnitPropertyID 			inID,
							AudioUnitScope 				inScope,
							AudioUnitElement 			inElement,
							const void *				inData,
							UInt32 					inDataSize)

{

	OSStatus result = AUBase::SetProperty (inID, inScope, inElement, inData, inDataSize);

	if (result == kAudioUnitErr_InvalidProperty)
		result = AUMIDIBase::DelegateSetProperty (inID, inScope, inElement, inData, inDataSize);

	return result;
}

// For a MusicDevice that doesn't support separate instruments (ie. is mono-timbral)
// then this call should return an instrument count of zero and noErr
OSStatus			MusicDeviceBase::GetInstrumentCount (UInt32 &outInstCount) const
{
	outInstCount = 0;
	return noErr;
}

OSStatus	MusicDeviceBase::HandleNoteOn(	UInt8 	inChannel,
											UInt8 	inNoteNumber,
											UInt8 	inVelocity,
											UInt32 	inStartFrame)
{
	MusicDeviceNoteParams params;
	params.argCount = 2;
	params.mPitch = inNoteNumber;
	params.mVelocity = inVelocity;
	return StartNote (kMusicNoteEvent_UseGroupInstrument, inChannel, NULL, inStartFrame, params);
}

OSStatus	MusicDeviceBase::HandleNoteOff(	UInt8 	inChannel,
											UInt8 	inNoteNumber,
											UInt8 	inVelocity,
											UInt32 	inStartFrame)
{
	return StopNote (inChannel, inNoteNumber, inStartFrame);
}

OSStatus
MusicDeviceBase::HandleStartNoteMessage (MusicDeviceInstrumentID		inInstrument,
										MusicDeviceGroupID				inGroupID,
										NoteInstanceID *				outNoteInstanceID,
										UInt32							inOffsetSampleFrame,
										const MusicDeviceNoteParams *	inParams)
{
	if (inParams == NULL || outNoteInstanceID == NULL) return kAudio_ParamError;

	if (!IsInitialized()) return kAudioUnitErr_Uninitialized;

	return StartNote (inInstrument, inGroupID, outNoteInstanceID, inOffsetSampleFrame, *inParams);
}

#if TARGET_OS_MAC
	#if __LP64__
		// comp instance, parameters in forward order
		#define PARAM(_typ, _name, _index, _nparams) \
			_typ _name = *(_typ *)&params->params[_index + 1];
	#else
		// parameters in reverse order, then comp instance
		#define PARAM(_typ, _name, _index, _nparams) \
			_typ _name = *(_typ *)&params->params[_nparams - 1 - _index];
	#endif
#elif TARGET_OS_WIN32
		// (no comp instance), parameters in forward order
		#define PARAM(_typ, _name, _index, _nparams) \
			_typ _name = *(_typ *)&params->params[_index];
#endif

#if !CA_USE_AUDIO_PLUGIN_ONLY
OSStatus			MusicDeviceBase::ComponentEntryDispatch(	ComponentParameters *		params,
																MusicDeviceBase *			This)
{
	if (This == NULL) return kAudio_ParamError;

	OSStatus result;

	switch (params->what) {
	case kMusicDeviceMIDIEventSelect:
	case kMusicDeviceSysExSelect:
		{
			result = AUMIDIBase::ComponentEntryDispatch (params, This);
		}
		break;
	case kMusicDevicePrepareInstrumentSelect:
		{
			PARAM(MusicDeviceInstrumentID, inInstrument, 0, 1);
			result = This->PrepareInstrument(inInstrument);
		}
		break;
	case kMusicDeviceReleaseInstrumentSelect:
		{
			PARAM(MusicDeviceInstrumentID, inInstrument, 0, 1);
			result = This->ReleaseInstrument(inInstrument);
		}
		break;
	case kMusicDeviceStartNoteSelect:
		{
			PARAM(MusicDeviceInstrumentID, pbinInstrument, 0, 5);
			PARAM(MusicDeviceGroupID, pbinGroupID, 1, 5);
			PARAM(NoteInstanceID *, pboutNoteInstanceID, 2, 5);
			PARAM(UInt32, pbinOffsetSampleFrame, 3, 5);
			PARAM(const MusicDeviceNoteParams *, pbinParams, 4, 5);
			result = This->HandleStartNoteMessage(pbinInstrument, pbinGroupID, pboutNoteInstanceID, pbinOffsetSampleFrame, pbinParams);
		}
		break;
	case kMusicDeviceStopNoteSelect:
		{
			PARAM(MusicDeviceGroupID, pbinGroupID, 0, 3);
			PARAM(NoteInstanceID, pbinNoteInstanceID, 1, 3);
			PARAM(UInt32, pbinOffsetSampleFrame, 2, 3);
			result = This->StopNote(pbinGroupID, pbinNoteInstanceID, pbinOffsetSampleFrame);
		}
		break;

	default:
		result = AUBase::ComponentEntryDispatch(params, This);
		break;
	}

	return result;
}
#endif

#if !CA_USE_AUDIO_PLUGIN_ONLY

// fast dispatch
static OSStatus		MusicDeviceBaseMIDIEvent(void *					inComponentStorage,
						UInt32					inStatus,
						UInt32					inData1,
						UInt32					inData2,
						UInt32					inOffsetSampleFrame)
{
	OSStatus result = noErr;
	try {
		MusicDeviceBase *This = static_cast<MusicDeviceBase *>(inComponentStorage);
		if (This == NULL) return kAudio_ParamError;
		result = This->MIDIEvent(inStatus, inData1, inData2, inOffsetSampleFrame);
	}
	COMPONENT_CATCH
	return result;
}

OSStatus		MusicDeviceBaseStartNote(	void *		inComponentStorage,
						MusicDeviceInstrumentID			inInstrument,
						MusicDeviceGroupID				inGroupID,
						NoteInstanceID *				outNoteInstanceID,
						UInt32							inOffsetSampleFrame,
						const MusicDeviceNoteParams *	inParams)
{
	OSStatus result = noErr;
	try {
		if (inParams == NULL || outNoteInstanceID == NULL) return kAudio_ParamError;
		MusicDeviceBase *This = static_cast<MusicDeviceBase *>(inComponentStorage);
		if (This == NULL) return kAudio_ParamError;
		result = This->StartNote(inInstrument, inGroupID, outNoteInstanceID, inOffsetSampleFrame, *inParams);
	}
	COMPONENT_CATCH
	return result;
}

OSStatus		MusicDeviceBaseStopNote(void *			inComponentStorage,
						MusicDeviceGroupID				inGroupID,
						NoteInstanceID					inNoteInstanceID,
						UInt32							inOffsetSampleFrame)
{
	OSStatus result = noErr;
	try {
		MusicDeviceBase *This = static_cast<MusicDeviceBase *>(inComponentStorage);
		if (This == NULL) return kAudio_ParamError;
		result = This->StopNote(inGroupID, inNoteInstanceID, inOffsetSampleFrame);
	}
	COMPONENT_CATCH
	return result;
}

#endif
