/*

     File: AUPlugInDispatch.cpp

 Abstract: AUPlugInDispatch.h

  Version: 1.1

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 MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION

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*/

#include "AUPlugInDispatch.h"

#include "CAXException.h"

#include "ComponentBase.h"

#include "AUBase.h"

#define ACPI ((AudioComponentPlugInInstance *)self)

#define AUI ((AUBase *)&ACPI->mInstanceStorage)

// ------------------------------------------------------------------------------------------------

static OSStatus AUMethodInitialize(void *self)

{

    OSStatus result = noErr;

    try {

        result = AUI->DoInitialize();

    }

    COMPONENT_CATCH

    return result;

}

static OSStatus AUMethodUninitialize(void *self)

{

    OSStatus result = noErr;

    try {

        AUI->DoCleanup();

    }

    COMPONENT_CATCH

    return result;

}

static OSStatus AUMethodGetPropertyInfo(void *self, AudioUnitPropertyID prop, AudioUnitScope scope, AudioUnitElement elem, UInt32 *outDataSize, Boolean *outWritable)

{

    OSStatus result = noErr;

    try {

        UInt32 dataSize;

        Boolean writable;

        result = AUI->DispatchGetPropertyInfo(prop, scope, elem, dataSize, writable);

        if (outDataSize != NULL)

            *outDataSize = dataSize;

        if (outWritable != NULL)

            *outWritable = writable;

    }

    COMPONENT_CATCH

    return result;

}

static OSStatus AUMethodGetProperty(void *self, AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void *outData, UInt32 *ioDataSize)

{

    OSStatus result = noErr;

    try {

        UInt32 actualPropertySize, clientBufferSize;

        Boolean writable;

        char *tempBuffer;

        void *destBuffer;

        if (ioDataSize == NULL) {

            ca_debug_string("AudioUnitGetProperty: null size pointer");

            result = kAudio_ParamError;

            goto finishGetProperty;

        }

        if (outData == NULL) {

            UInt32 dataSize;

            result = AUI->DispatchGetPropertyInfo(inID, inScope, inElement, dataSize, writable);

            *ioDataSize = dataSize;

            goto finishGetProperty;

        }

        clientBufferSize = *ioDataSize;

        if (clientBufferSize == 0)

        {

            ca_debug_string("AudioUnitGetProperty: *ioDataSize == 0 on entry");

            // $$$ or should we allow this as a shortcut for finding the size?

            result = kAudio_ParamError;

            goto finishGetProperty;

        }

        result = AUI->DispatchGetPropertyInfo(inID, inScope, inElement, actualPropertySize, writable);

        if (result != noErr) 

            goto finishGetProperty;

        if (clientBufferSize < actualPropertySize) 

        {

            tempBuffer = new char[actualPropertySize];

            destBuffer = tempBuffer;

        } else {

            tempBuffer = NULL;

            destBuffer = outData;

        }

        result = AUI->DispatchGetProperty(inID, inScope, inElement, destBuffer);

        if (result == noErr) {

            if (tempBuffer && clientBufferSize < actualPropertySize) 

            {

                memcpy(outData, tempBuffer, clientBufferSize);

                delete[] tempBuffer;

                // ioDataSize remains correct, the number of bytes we wrote

            } else

                *ioDataSize = actualPropertySize;

        } else

            *ioDataSize = 0;

    }

    COMPONENT_CATCH

finishGetProperty:

    return result;

}

static OSStatus AUMethodSetProperty(void *self, AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, const void *inData, UInt32 inDataSize)

{

    OSStatus result = noErr;

    try {

        if (inData && inDataSize)

            result = AUI->DispatchSetProperty(inID, inScope, inElement, inData, inDataSize);

        else {

            if (inData == NULL && inDataSize == 0) {

                result = AUI->DispatchRemovePropertyValue(inID, inScope, inElement);

            } else {

                if (inData == NULL) {

                    ca_debug_string("AudioUnitSetProperty: inData == NULL");

                    result = kAudio_ParamError;

                    goto finishSetProperty;

                }

                if (inDataSize == 0) {

                    ca_debug_string("AudioUnitSetProperty: inDataSize == 0");

                    result = kAudio_ParamError;

                    goto finishSetProperty;

                }

            }

        }

    }

    COMPONENT_CATCH

finishSetProperty:

    return result;

}

static OSStatus AUMethodAddPropertyListener(void *self, AudioUnitPropertyID prop, AudioUnitPropertyListenerProc proc, void *userData)

{

    OSStatus result = noErr;

    try {

        result = AUI->AddPropertyListener(prop, proc, userData);

    }

    COMPONENT_CATCH

    return result;

}

static OSStatus AUMethodRemovePropertyListener(void *self, AudioUnitPropertyID prop, AudioUnitPropertyListenerProc proc)

{

    OSStatus result = noErr;

    try {

        result = AUI->RemovePropertyListener(prop, proc, NULL, false);

    }

    COMPONENT_CATCH

    return result;

}

static OSStatus AUMethodRemovePropertyListenerWithUserData(void *self, AudioUnitPropertyID prop, AudioUnitPropertyListenerProc proc, void *userData)

{

    OSStatus result = noErr;

    try {

        result = AUI->RemovePropertyListener(prop, proc, userData, true);

    }

    COMPONENT_CATCH

    return result;

}

static OSStatus AUMethodAddRenderNotify(void *self, AURenderCallback proc, void *userData)

{

    OSStatus result = noErr;

    try {

        result = AUI->SetRenderNotification(proc, userData);

    }

    COMPONENT_CATCH

    return result;

}

static OSStatus AUMethodRemoveRenderNotify(void *self, AURenderCallback proc, void *userData)

{

    OSStatus result = noErr;

    try {

        result = AUI->RemoveRenderNotification(proc, userData);

    }

    COMPONENT_CATCH

    return result;

}

static OSStatus AUMethodGetParameter(void *self, AudioUnitParameterID param, AudioUnitScope scope, AudioUnitElement elem, AudioUnitParameterValue *value)

{

    OSStatus result = noErr;

    try {

        result = (value == NULL ? kAudio_ParamError : AUI->GetParameter(param, scope, elem, *value));

    }

    COMPONENT_CATCH

    return result;

}

static OSStatus AUMethodSetParameter(void *self, AudioUnitParameterID param, AudioUnitScope scope, AudioUnitElement elem, AudioUnitParameterValue value, UInt32 bufferOffset)

{

    OSStatus result = noErr;

    try {

        result = AUI->SetParameter(param, scope, elem, value, bufferOffset);

    }

    COMPONENT_CATCH

    return result;

}

static OSStatus AUMethodScheduleParameters(void *self, const AudioUnitParameterEvent *events, UInt32 numEvents)

{

    OSStatus result = noErr;

    try {

        result = AUI->ScheduleParameter(events, numEvents);

    }

    COMPONENT_CATCH

    return result;

}

static OSStatus AUMethodRender(void *self, AudioUnitRenderActionFlags *ioActionFlags, const AudioTimeStamp *inTimeStamp, UInt32 inOutputBusNumber, UInt32 inNumberFrames, AudioBufferList *ioData)

{

    OSStatus result = noErr;

#if !TARGET_OS_IPHONE

    try {

#endif

        AudioUnitRenderActionFlags tempFlags;

        if (inTimeStamp == NULL || ioData == NULL)

            result = kAudio_ParamError;

        else {

            if (ioActionFlags == NULL) {

                tempFlags = 0;

                ioActionFlags = &tempFlags;

            }

            result = AUI->DoRender(*ioActionFlags, *inTimeStamp, inOutputBusNumber, inNumberFrames, *ioData);

        }

#if !TARGET_OS_IPHONE

    }

    COMPONENT_CATCH

#endif

    return result;

}

static OSStatus AUMethodComplexRender(void *self, AudioUnitRenderActionFlags *ioActionFlags, const AudioTimeStamp *inTimeStamp, UInt32 inOutputBusNumber, UInt32 inNumberOfPackets, UInt32 *outNumberOfPackets, AudioStreamPacketDescription *outPacketDescriptions, AudioBufferList *ioData, void *outMetadata, UInt32 *outMetadataByteSize)

{

    OSStatus result = noErr;

#if !TARGET_OS_IPHONE

    try {

#endif

        AudioUnitRenderActionFlags tempFlags;

        if (inTimeStamp == NULL || ioData == NULL)

            result = kAudio_ParamError;

        else {

            if (ioActionFlags == NULL) {

                tempFlags = 0;

                ioActionFlags = &tempFlags;

            }

            result = AUI->ComplexRender(*ioActionFlags, *inTimeStamp, inOutputBusNumber, inNumberOfPackets, outNumberOfPackets, outPacketDescriptions, *ioData, outMetadata, outMetadataByteSize);

        }

#if !TARGET_OS_IPHONE

    }

    COMPONENT_CATCH

#endif

    return result;

}

static OSStatus AUMethodReset(void *self, AudioUnitScope scope, AudioUnitElement elem)

{

    OSStatus result = noErr;

    try {

        result = AUI->Reset(scope, elem);

    }

    COMPONENT_CATCH

    return result;

}

static OSStatus AUMethodProcess (void *self, AudioUnitRenderActionFlags *ioActionFlags, const AudioTimeStamp *inTimeStamp, UInt32 inNumberFrames, AudioBufferList *ioData)

{

    OSStatus result = noErr;

#if !TARGET_OS_IPHONE

    try {

#endif

        bool doParamCheck = true;

        AudioUnitRenderActionFlags tempFlags;

        if (ioActionFlags == NULL) {

            tempFlags = 0;

            ioActionFlags = &tempFlags;

        } else {

            if (*ioActionFlags & (1 << 9)/*kAudioUnitRenderAction_DoNotCheckRenderArgs*/)

                doParamCheck = false;

        }

        if (doParamCheck && (inTimeStamp == NULL || ioData == NULL))

            result = kAudio_ParamError;

        else {

            result = AUI->DoProcess(*ioActionFlags, *inTimeStamp, inNumberFrames, *ioData);

        }

#if !TARGET_OS_IPHONE

    }

    COMPONENT_CATCH

#endif

    return result;

}

static OSStatus AUMethodProcessMultiple (void *self, AudioUnitRenderActionFlags *ioActionFlags, const AudioTimeStamp *inTimeStamp, UInt32 inNumberFrames, UInt32 inNumberInputBufferLists, const AudioBufferList **inInputBufferLists, UInt32 inNumberOutputBufferLists, AudioBufferList **ioOutputBufferLists)

{

    OSStatus result = noErr;

#if !TARGET_OS_IPHONE

    try {

#endif

        bool doParamCheck = true;

        AudioUnitRenderActionFlags tempFlags;

        if (ioActionFlags == NULL) {

            tempFlags = 0;

            ioActionFlags = &tempFlags;

        } else {

            if (*ioActionFlags & (1 << 9)/*kAudioUnitRenderAction_DoNotCheckRenderArgs*/)

                doParamCheck = false;

        }

        if (doParamCheck && (inTimeStamp == NULL || inInputBufferLists == NULL || ioOutputBufferLists == NULL))

            result = kAudio_ParamError;

        else {

            result = AUI->DoProcessMultiple(*ioActionFlags, *inTimeStamp, inNumberFrames, inNumberInputBufferLists, inInputBufferLists, inNumberOutputBufferLists, ioOutputBufferLists);

        }

#if !TARGET_OS_IPHONE

    }

    COMPONENT_CATCH

#endif

    return result;

}

// ------------------------------------------------------------------------------------------------

static OSStatus AUMethodStart(void *self)

{

    OSStatus result = noErr;

    try {

        result = AUI->Start();

    }

    COMPONENT_CATCH

    return result;

}

static OSStatus AUMethodStop(void *self)

{

    OSStatus result = noErr;

    try {

        result = AUI->Stop();

    }

    COMPONENT_CATCH

    return result;

}

// ------------------------------------------------------------------------------------------------

#if !CA_BASIC_AU_FEATURES

// I don't know what I'm doing here; conflicts with the multiple inheritence in MusicDeviceBase.

static OSStatus AUMethodMIDIEvent(void *self, UInt32 inStatus, UInt32 inData1, UInt32 inData2, UInt32 inOffsetSampleFrame)

{

    OSStatus result = noErr;

    try {

        result = AUI->MIDIEvent(inStatus, inData1, inData2, inOffsetSampleFrame);

    }

    COMPONENT_CATCH

    return result;

}

static OSStatus AUMethodSysEx(void *self, const UInt8 *inData, UInt32 inLength)

{

    OSStatus result = noErr;

    try {

        result = AUI->SysEx(inData, inLength);

    }

    COMPONENT_CATCH

    return result;

}

static OSStatus AUMethodStartNote(void *self, MusicDeviceInstrumentID inInstrument, MusicDeviceGroupID inGroupID, NoteInstanceID *outNoteInstanceID, UInt32 inOffsetSampleFrame, const MusicDeviceNoteParams *inParams)

{

    OSStatus result = noErr;

    try {

        if (inParams == NULL || outNoteInstanceID == NULL) 

            result = kAudio_ParamError;

        else

            result = AUI->StartNote(inInstrument, inGroupID, outNoteInstanceID, inOffsetSampleFrame, *inParams);

    }

    COMPONENT_CATCH

    return result;

}

static OSStatus AUMethodStopNote(void *self, MusicDeviceGroupID inGroupID, NoteInstanceID inNoteInstanceID, UInt32 inOffsetSampleFrame)

{

    OSStatus result = noErr;

    try {

        result = AUI->StopNote(inGroupID, inNoteInstanceID, inOffsetSampleFrame);

    }

    COMPONENT_CATCH

    return result;

}

#if !TARGET_OS_IPHONE

static OSStatus AUMethodPrepareInstrument (void *self, MusicDeviceInstrumentID inInstrument)

{

    OSStatus result = noErr;

    try {

        result = AUI->PrepareInstrument(inInstrument);

    }

    COMPONENT_CATCH

    return result;

}

static OSStatus AUMethodReleaseInstrument (void *self, MusicDeviceInstrumentID inInstrument)

{

    OSStatus result = noErr;

    try {

        result = AUI->ReleaseInstrument(inInstrument);

    }

    COMPONENT_CATCH

    return result;

}

#endif // TARGET_OS_IPHONE

#endif // CA_BASIC_AU_FEATURES

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

#pragma mark -

#pragma mark Lookup Methods

AudioComponentMethod AUBaseLookup::Lookup (SInt16 selector)

{

    switch (selector) {

        case kAudioUnitInitializeSelect:        return (AudioComponentMethod)AUMethodInitialize;

        case kAudioUnitUninitializeSelect:      return (AudioComponentMethod)AUMethodUninitialize;

        case kAudioUnitGetPropertyInfoSelect:   return (AudioComponentMethod)AUMethodGetPropertyInfo;

        case kAudioUnitGetPropertySelect:       return (AudioComponentMethod)AUMethodGetProperty;

        case kAudioUnitSetPropertySelect:       return (AudioComponentMethod)AUMethodSetProperty;

        case kAudioUnitAddPropertyListenerSelect:return (AudioComponentMethod)AUMethodAddPropertyListener;

        case kAudioUnitRemovePropertyListenerSelect:

                                                return (AudioComponentMethod)AUMethodRemovePropertyListener;

        case kAudioUnitRemovePropertyListenerWithUserDataSelect:

                                                return (AudioComponentMethod)AUMethodRemovePropertyListenerWithUserData;

        case kAudioUnitAddRenderNotifySelect:   return (AudioComponentMethod)AUMethodAddRenderNotify;

        case kAudioUnitRemoveRenderNotifySelect:return (AudioComponentMethod)AUMethodRemoveRenderNotify;

        case kAudioUnitGetParameterSelect:      return (AudioComponentMethod)AUMethodGetParameter;

        case kAudioUnitSetParameterSelect:      return (AudioComponentMethod)AUMethodSetParameter;

        case kAudioUnitScheduleParametersSelect:return (AudioComponentMethod)AUMethodScheduleParameters;

        case kAudioUnitRenderSelect:            return (AudioComponentMethod)AUMethodRender;

        case kAudioUnitResetSelect:             return (AudioComponentMethod)AUMethodReset;

        default:

            break;

    }

    return NULL;

}

AudioComponentMethod AUOutputLookup::Lookup (SInt16 selector)

{

    AudioComponentMethod method = AUBaseLookup::Lookup(selector);

    if (method) return method;

    switch (selector) {

        case kAudioOutputUnitStartSelect:   return (AudioComponentMethod)AUMethodStart;

        case kAudioOutputUnitStopSelect:    return (AudioComponentMethod)AUMethodStop;

        default:

            break;

    }

    return NULL;

}

AudioComponentMethod AUComplexOutputLookup::Lookup (SInt16 selector)

{

    AudioComponentMethod method = AUBaseLookup::Lookup(selector);

    if (method) return method;

    method = AUOutputLookup::Lookup(selector);

    if (method) return method;

    if (selector == kAudioUnitComplexRenderSelect)

        return (AudioComponentMethod)AUMethodComplexRender;

    return NULL;

}

AudioComponentMethod AUBaseProcessLookup::Lookup (SInt16 selector)

{

    AudioComponentMethod method = AUBaseLookup::Lookup(selector);

    if (method) return method;

    if (selector == kAudioUnitProcessSelect)

        return (AudioComponentMethod)AUMethodProcess;

    return NULL;

}

AudioComponentMethod AUBaseProcessMultipleLookup::Lookup (SInt16 selector)

{

    AudioComponentMethod method = AUBaseLookup::Lookup(selector);

    if (method) return method;

    method = AUBaseProcessLookup::Lookup(selector);

    if (method) return method;

    if (selector == kAudioUnitProcessMultipleSelect)

        return (AudioComponentMethod)AUMethodProcessMultiple;

    return NULL;

}

#if !CA_BASIC_AU_FEATURES

inline AudioComponentMethod MIDI_Lookup (SInt16 selector)

{

    switch (selector) {

        case kMusicDeviceMIDIEventSelect:   return (AudioComponentMethod)AUMethodMIDIEvent;

        case kMusicDeviceSysExSelect:       return (AudioComponentMethod)AUMethodSysEx;

        default:

            break;

    }

    return NULL;

}

AudioComponentMethod AUMIDILookup::Lookup (SInt16 selector)

{

    AudioComponentMethod method = AUBaseLookup::Lookup(selector);

    if (method) return method;

    return MIDI_Lookup(selector);

}

AudioComponentMethod AUMIDIProcessLookup::Lookup (SInt16 selector)

{

    AudioComponentMethod method = AUBaseProcessLookup::Lookup(selector);

    if (method) return method;

    return MIDI_Lookup(selector);

}

AudioComponentMethod AUMusicLookup::Lookup (SInt16 selector)

{

    AudioComponentMethod method = AUBaseLookup::Lookup(selector);

    if (method) return method;

    switch (selector) {

        case kMusicDeviceStartNoteSelect:   return (AudioComponentMethod)AUMethodStartNote;

        case kMusicDeviceStopNoteSelect:    return (AudioComponentMethod)AUMethodStopNote;

#if !TARGET_OS_IPHONE

        case kMusicDevicePrepareInstrumentSelect:   return (AudioComponentMethod)AUMethodPrepareInstrument;

        case kMusicDeviceReleaseInstrumentSelect:   return (AudioComponentMethod)AUMethodReleaseInstrument;

#endif

        default:        

            break;

    }

    return MIDI_Lookup (selector);

}

#endif