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MusicDeviceBase.cpp
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MusicDeviceBase.cpp
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/*
File: MusicDeviceBase.cpp
Abstract: MusicDeviceBase.h
Version: 1.0.1
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple
Inc. ("Apple") in consideration of your agreement to the following
terms, and your use, installation, modification or redistribution of
this Apple software constitutes acceptance of these terms. If you do
not agree with these terms, please do not use, install, modify or
redistribute this Apple software.
In consideration of your agreement to abide by the following terms, and
subject to these terms, Apple grants you a personal, non-exclusive
license, under Apple's copyrights in this original Apple software (the
"Apple Software"), to use, reproduce, modify and redistribute the Apple
Software, with or without modifications, in source and/or binary forms;
provided that if you redistribute the Apple Software in its entirety and
without modifications, you must retain this notice and the following
text and disclaimers in all such redistributions of the Apple Software.
Neither the name, trademarks, service marks or logos of Apple Inc. may
be used to endorse or promote products derived from the Apple Software
without specific prior written permission from Apple. Except as
expressly stated in this notice, no other rights or licenses, express or
implied, are granted by Apple herein, including but not limited to any
patent rights that may be infringed by your derivative works or by other
works in which the Apple Software may be incorporated.
The Apple Software is provided by Apple on an "AS IS" basis. APPLE
MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
Copyright (C) 2014 Apple Inc. All Rights Reserved.
*/
#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 *)¶ms->params[_index + 1];
#else
// parameters in reverse order, then comp instance
#define PARAM(_typ, _name, _index, _nparams) \
_typ _name = *(_typ *)¶ms->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 *)¶ms->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