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/*
File: AUEffectBase.cpp
Abstract: AUEffectBase.h
Version: 1.1
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 "AUEffectBase.h"
/*
This class does not deal as well as it should with N-M effects...
The problem areas are (if the channels don't match):
ProcessInPlace if the channels don't match - there will be problems if InputChan != OutputChan
Bypass - its just passing the buffers through when not processing them
This will be fixed in a future update...
*/
//_____________________________________________________________________________
//
AUEffectBase::AUEffectBase( AudioComponentInstance audioUnit,
bool inProcessesInPlace ) :
AUBase(audioUnit, 1, 1), // 1 in bus, 1 out bus
mBypassEffect(false),
mParamSRDep (false),
mProcessesInPlace(inProcessesInPlace),
mMainOutput(NULL), mMainInput(NULL)
#if TARGET_OS_IPHONE
, mOnlyOneKernel(false)
#endif
{
}
//_____________________________________________________________________________
//
AUEffectBase::~AUEffectBase()
{
Cleanup();
}
//_____________________________________________________________________________
//
void AUEffectBase::Cleanup()
{
for (KernelList::iterator it = mKernelList.begin(); it != mKernelList.end(); ++it)
delete *it;
mKernelList.clear();
mMainOutput = NULL;
mMainInput = NULL;
}
//_____________________________________________________________________________
//
OSStatus AUEffectBase::Initialize()
{
// get our current numChannels for input and output
SInt16 auNumInputs = (SInt16) GetInput(0)->GetStreamFormat().mChannelsPerFrame;
SInt16 auNumOutputs = (SInt16) GetOutput(0)->GetStreamFormat().mChannelsPerFrame;
// does the unit publish specific information about channel configurations?
const AUChannelInfo *auChannelConfigs = NULL;
UInt32 numIOconfigs = SupportedNumChannels(&auChannelConfigs);
if ((numIOconfigs > 0) && (auChannelConfigs != NULL))
{
bool foundMatch = false;
for (UInt32 i = 0; (i < numIOconfigs) && !foundMatch; ++i)
{
SInt16 configNumInputs = auChannelConfigs[i].inChannels;
SInt16 configNumOutputs = auChannelConfigs[i].outChannels;
if ((configNumInputs < 0) && (configNumOutputs < 0))
{
// unit accepts any number of channels on input and output
if (((configNumInputs == -1) && (configNumOutputs == -2))
|| ((configNumInputs == -2) && (configNumOutputs == -1)))
{
foundMatch = true;
// unit accepts any number of channels on input and output IFF they are the same number on both scopes
}
else if (((configNumInputs == -1) && (configNumOutputs == -1)) && (auNumInputs == auNumOutputs))
{
foundMatch = true;
// unit has specified a particular number of channels on both scopes
}
else
continue;
}
else
{
// the -1 case on either scope is saying that the unit doesn't care about the
// number of channels on that scope
bool inputMatch = (auNumInputs == configNumInputs) || (configNumInputs == -1);
bool outputMatch = (auNumOutputs == configNumOutputs) || (configNumOutputs == -1);
if (inputMatch && outputMatch)
foundMatch = true;
}
}
if (!foundMatch)
return kAudioUnitErr_FormatNotSupported;
}
else
{
// there is no specifically published channel info
// so for those kinds of effects, the assumption is that the channels (whatever their number)
// should match on both scopes
if ((auNumOutputs != auNumInputs) || (auNumOutputs == 0))
{
return kAudioUnitErr_FormatNotSupported;
}
}
MaintainKernels();
mMainOutput = GetOutput(0);
mMainInput = GetInput(0);
const CAStreamBasicDescription& format = GetStreamFormat(kAudioUnitScope_Output, 0);
format.IdentifyCommonPCMFormat(mCommonPCMFormat, NULL);
mBytesPerFrame = format.mBytesPerFrame;
return noErr;
}
OSStatus AUEffectBase::Reset( AudioUnitScope inScope,
AudioUnitElement inElement)
{
for (KernelList::iterator it = mKernelList.begin(); it != mKernelList.end(); ++it) {
AUKernelBase *kernel = *it;
if (kernel != NULL)
kernel->Reset();
}
return AUBase::Reset(inScope, inElement);
}
OSStatus AUEffectBase::GetPropertyInfo (AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
UInt32 & outDataSize,
Boolean & outWritable)
{
if (inScope == kAudioUnitScope_Global) {
switch (inID) {
case kAudioUnitProperty_BypassEffect:
outWritable = true;
outDataSize = sizeof (UInt32);
return noErr;
case kAudioUnitProperty_InPlaceProcessing:
outWritable = true;
outDataSize = sizeof (UInt32);
return noErr;
}
}
return AUBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
}
OSStatus AUEffectBase::GetProperty (AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
void * outData)
{
if (inScope == kAudioUnitScope_Global) {
switch (inID) {
case kAudioUnitProperty_BypassEffect:
*((UInt32*)outData) = (IsBypassEffect() ? 1 : 0);
return noErr;
case kAudioUnitProperty_InPlaceProcessing:
*((UInt32*)outData) = (mProcessesInPlace ? 1 : 0);
return noErr;
}
}
return AUBase::GetProperty (inID, inScope, inElement, outData);
}
OSStatus AUEffectBase::SetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
const void * inData,
UInt32 inDataSize)
{
if (inScope == kAudioUnitScope_Global) {
switch (inID) {
case kAudioUnitProperty_BypassEffect:
{
if (inDataSize < sizeof(UInt32))
return kAudioUnitErr_InvalidPropertyValue;
bool tempNewSetting = *((UInt32*)inData) != 0;
// we're changing the state of bypass
if (tempNewSetting != IsBypassEffect())
{
if (!tempNewSetting && IsBypassEffect() && IsInitialized()) // turning bypass off and we're initialized
Reset(0, 0);
SetBypassEffect (tempNewSetting);
}
return noErr;
}
case kAudioUnitProperty_InPlaceProcessing:
mProcessesInPlace = (*((UInt32*)inData) != 0);
return noErr;
}
}
return AUBase::SetProperty (inID, inScope, inElement, inData, inDataSize);
}
void AUEffectBase::MaintainKernels()
{
#if TARGET_OS_IPHONE
UInt32 nKernels = mOnlyOneKernel ? 1 : GetNumberOfChannels();
#else
UInt32 nKernels = GetNumberOfChannels();
#endif
if (mKernelList.size() < nKernels) {
mKernelList.reserve(nKernels);
for (UInt32 i = (UInt32)mKernelList.size(); i < nKernels; ++i)
mKernelList.push_back(NewKernel());
} else {
while (mKernelList.size() > nKernels) {
AUKernelBase *kernel = mKernelList.back();
delete kernel;
mKernelList.pop_back();
}
}
for(unsigned int i = 0; i < nKernels; i++ )
{
if(mKernelList[i]) {
mKernelList[i]->SetChannelNum (i);
}
}
}
bool AUEffectBase::StreamFormatWritable( AudioUnitScope scope,
AudioUnitElement element)
{
return IsInitialized() ? false : true;
}
OSStatus AUEffectBase::ChangeStreamFormat( AudioUnitScope inScope,
AudioUnitElement inElement,
const CAStreamBasicDescription & inPrevFormat,
const CAStreamBasicDescription & inNewFormat)
{
OSStatus result = AUBase::ChangeStreamFormat(inScope, inElement, inPrevFormat, inNewFormat);
if (result == noErr)
{
// for the moment this only dependency we know about
// where a parameter's range may change is with the sample rate
// and effects are only publishing parameters in the global scope!
if (GetParamHasSampleRateDependency() && fnotequal(inPrevFormat.mSampleRate, inNewFormat.mSampleRate))
PropertyChanged(kAudioUnitProperty_ParameterList, kAudioUnitScope_Global, 0);
}
return result;
}
// ____________________________________________________________________________
//
// This method is called (potentially repeatedly) by ProcessForScheduledParams()
// in order to perform the actual DSP required for this portion of the entire buffer
// being processed. The entire buffer can be divided up into smaller "slices"
// according to the timestamps on the scheduled parameters...
//
OSStatus AUEffectBase::ProcessScheduledSlice( void *inUserData,
UInt32 inStartFrameInBuffer,
UInt32 inSliceFramesToProcess,
UInt32 inTotalBufferFrames )
{
ScheduledProcessParams &sliceParams = *((ScheduledProcessParams*)inUserData);
AudioUnitRenderActionFlags &actionFlags = *sliceParams.actionFlags;
AudioBufferList &inputBufferList = *sliceParams.inputBufferList;
AudioBufferList &outputBufferList = *sliceParams.outputBufferList;
UInt32 channelSize = inSliceFramesToProcess * mBytesPerFrame;
// fix the size of the buffer we're operating on before we render this slice of time
for(unsigned int i = 0; i < inputBufferList.mNumberBuffers; i++ ) {
inputBufferList.mBuffers[i].mDataByteSize = inputBufferList.mBuffers[i].mNumberChannels * channelSize;
}
for(unsigned int i = 0; i < outputBufferList.mNumberBuffers; i++ ) {
outputBufferList.mBuffers[i].mDataByteSize = outputBufferList.mBuffers[i].mNumberChannels * channelSize;
}
// process the buffer
OSStatus result = ProcessBufferLists(actionFlags, inputBufferList, outputBufferList, inSliceFramesToProcess );
// we just partially processed the buffers, so increment the data pointers to the next part of the buffer to process
for(unsigned int i = 0; i < inputBufferList.mNumberBuffers; i++ ) {
inputBufferList.mBuffers[i].mData =
(char *)inputBufferList.mBuffers[i].mData + inputBufferList.mBuffers[i].mNumberChannels * channelSize;
}
for(unsigned int i = 0; i < outputBufferList.mNumberBuffers; i++ ) {
outputBufferList.mBuffers[i].mData =
(char *)outputBufferList.mBuffers[i].mData + outputBufferList.mBuffers[i].mNumberChannels * channelSize;
}
return result;
}
// ____________________________________________________________________________
//
OSStatus AUEffectBase::Render( AudioUnitRenderActionFlags &ioActionFlags,
const AudioTimeStamp & inTimeStamp,
UInt32 nFrames)
{
if (!HasInput(0))
return kAudioUnitErr_NoConnection;
OSStatus result = noErr;
result = mMainInput->PullInput(ioActionFlags, inTimeStamp, 0 /* element */, nFrames);
if (result == noErr)
{
if(ProcessesInPlace() && mMainOutput->WillAllocateBuffer())
{
mMainOutput->SetBufferList(mMainInput->GetBufferList() );
}
if (ShouldBypassEffect())
{
// leave silence bit alone
if(!ProcessesInPlace() )
{
mMainInput->CopyBufferContentsTo (mMainOutput->GetBufferList());
}
}
else
{
if(mParamList.size() == 0 )
{
// this will read/write silence bit
result = ProcessBufferLists(ioActionFlags, mMainInput->GetBufferList(), mMainOutput->GetBufferList(), nFrames);
}
else
{
// deal with scheduled parameters...
AudioBufferList &inputBufferList = mMainInput->GetBufferList();
AudioBufferList &outputBufferList = mMainOutput->GetBufferList();
ScheduledProcessParams processParams;
processParams.actionFlags = &ioActionFlags;
processParams.inputBufferList = &inputBufferList;
processParams.outputBufferList = &outputBufferList;
// divide up the buffer into slices according to scheduled params then
// do the DSP for each slice (ProcessScheduledSlice() called for each slice)
result = ProcessForScheduledParams( mParamList,
nFrames,
&processParams );
// fixup the buffer pointers to how they were before we started
UInt32 channelSize = nFrames * mBytesPerFrame;
for(unsigned int i = 0; i < inputBufferList.mNumberBuffers; i++ ) {
UInt32 size = inputBufferList.mBuffers[i].mNumberChannels * channelSize;
inputBufferList.mBuffers[i].mData = (char *)inputBufferList.mBuffers[i].mData - size;
inputBufferList.mBuffers[i].mDataByteSize = size;
}
for(unsigned int i = 0; i < outputBufferList.mNumberBuffers; i++ ) {
UInt32 size = outputBufferList.mBuffers[i].mNumberChannels * channelSize;
outputBufferList.mBuffers[i].mData = (char *)outputBufferList.mBuffers[i].mData - size;
outputBufferList.mBuffers[i].mDataByteSize = size;
}
}
}
if ( (ioActionFlags & kAudioUnitRenderAction_OutputIsSilence) && !ProcessesInPlace() )
{
AUBufferList::ZeroBuffer(mMainOutput->GetBufferList() );
}
}
return result;
}
OSStatus AUEffectBase::ProcessBufferLists(
AudioUnitRenderActionFlags & ioActionFlags,
const AudioBufferList & inBuffer,
AudioBufferList & outBuffer,
UInt32 inFramesToProcess )
{
if (ShouldBypassEffect())
return noErr;
// interleaved (or mono)
switch (mCommonPCMFormat) {
case CAStreamBasicDescription::kPCMFormatFloat32 :
ProcessBufferListsT<Float32>(ioActionFlags, inBuffer, outBuffer, inFramesToProcess);
break;
case CAStreamBasicDescription::kPCMFormatFixed824 :
ProcessBufferListsT<SInt32>(ioActionFlags, inBuffer, outBuffer, inFramesToProcess);
break;
case CAStreamBasicDescription::kPCMFormatInt16 :
ProcessBufferListsT<SInt16>(ioActionFlags, inBuffer, outBuffer, inFramesToProcess);
break;
default :
throw CAException(kAudio_UnimplementedError);
}
return noErr;
}
Float64 AUEffectBase::GetSampleRate()
{
return GetOutput(0)->GetStreamFormat().mSampleRate;
}
UInt32 AUEffectBase::GetNumberOfChannels()
{
return GetOutput(0)->GetStreamFormat().mChannelsPerFrame;
}
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