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livetrax/libs/appleutility/CoreAudio/PublicUtility/CAAudioUnit.cpp

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/*
File: CAAudioUnit.cpp
Abstract: CAAudioUnit.h
Version: 1.1
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Copyright (C) 2014 Apple Inc. All Rights Reserved.
*/
#include "CAAudioUnit.h"
#if !TARGET_OS_IPHONE
#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
#include <CoreServices/../Frameworks/CarbonCore.framework/Headers/Components.h>
#include <dlfcn.h>
#else
#include <Components.h>
#endif
#endif
#include "CAXException.h"
#include "CAReferenceCounted.h"
#include "AUOutputBL.h" //this is for the Preroll only
struct StackAUChannelInfo {
StackAUChannelInfo (UInt32 inSize) : mChanInfo ((AUChannelInfo*)malloc (inSize)) {}
~StackAUChannelInfo() { free (mChanInfo); }
AUChannelInfo* mChanInfo;
};
// is this symbol is not defined then we use the default setting which is that fast dispatch
// is supported on a desktop environment
#ifndef CA_AU_USE_FAST_DISPATCH
#define CA_AU_USE_FAST_DISPATCH !TARGET_OS_IPHONE
#endif
#if CA_AU_USE_FAST_DISPATCH
static void *LoadGetComponentInstanceStorage (void *inst);
#endif
class CAAudioUnit::AUState : public CAReferenceCounted {
public:
AUState (AudioComponent inComp)
: mUnit(0), mNode (0)
{
OSStatus result = ::AudioComponentInstanceNew (inComp, &mUnit);
if (result)
throw result;
Init();
}
AUState (const AUNode &inNode, const AudioUnit& inUnit)
: mUnit (inUnit), mNode (inNode)
{
Init();
}
~AUState();
AudioUnit mUnit;
AUNode mNode;
OSStatus GetParameter(AudioUnitParameterID inID, AudioUnitScope scope, AudioUnitElement element,
Float32 &outValue) const
{
#if CA_AU_USE_FAST_DISPATCH
if (mGetParamProc != NULL) {
return (mGetParamProc) (mConnInstanceStorage, inID, scope, element, &outValue);
}
#endif
return AudioUnitGetParameter(mUnit, inID, scope, element, &outValue);
}
OSStatus SetParameter(AudioUnitParameterID inID, AudioUnitScope scope, AudioUnitElement element,
Float32 value, UInt32 bufferOffsetFrames)
{
#if CA_AU_USE_FAST_DISPATCH
if (mSetParamProc != NULL) {
return (mSetParamProc) (mConnInstanceStorage, inID, scope, element, value, bufferOffsetFrames);
}
#endif
return AudioUnitSetParameter(mUnit, inID, scope, element, value, bufferOffsetFrames);
}
OSStatus Render (AudioUnitRenderActionFlags * ioActionFlags,
const AudioTimeStamp * inTimeStamp,
UInt32 inOutputBusNumber,
UInt32 inNumberFrames,
AudioBufferList * ioData)
{
#if CA_AU_USE_FAST_DISPATCH
if (mRenderProc != NULL) {
return (mRenderProc) (mConnInstanceStorage, ioActionFlags, inTimeStamp, inOutputBusNumber, inNumberFrames, ioData);
}
#endif
return AudioUnitRender(mUnit, ioActionFlags, inTimeStamp, inOutputBusNumber, inNumberFrames, ioData);
}
OSStatus MIDIEvent (UInt32 inStatus,
UInt32 inData1,
UInt32 inData2,
UInt32 inOffsetSampleFrame)
{
#if !TARGET_OS_WIN32
#if CA_AU_USE_FAST_DISPATCH
if (mMIDIEventProc != NULL) {
return (mMIDIEventProc) (mConnInstanceStorage, inStatus, inData1, inData2, inOffsetSampleFrame);
}
#endif
return MusicDeviceMIDIEvent (mUnit, inStatus, inData1, inData2, inOffsetSampleFrame);
#else // ON WINDOWS _ NO MIDI EVENT dispatch
return paramErr;
#endif
}
OSStatus StartNote (MusicDeviceInstrumentID inInstrument,
MusicDeviceGroupID inGroupID,
NoteInstanceID * outNoteInstanceID,
UInt32 inOffsetSampleFrame,
const MusicDeviceNoteParams * inParams)
{
#if !TARGET_OS_WIN32
#if CA_AU_USE_FAST_DISPATCH
if (mStartNoteProc != NULL) {
return (mStartNoteProc) (mConnInstanceStorage, inInstrument, inGroupID, outNoteInstanceID, inOffsetSampleFrame, inParams);
}
#endif
return MusicDeviceStartNote (mUnit, inInstrument, inGroupID, outNoteInstanceID, inOffsetSampleFrame, inParams);
#else
return paramErr;
#endif
}
OSStatus StopNote (MusicDeviceGroupID inGroupID,
NoteInstanceID inNoteInstanceID,
UInt32 inOffsetSampleFrame)
{
#if !TARGET_OS_WIN32
#if CA_AU_USE_FAST_DISPATCH
if (mStopNoteProc != NULL) {
return (mStopNoteProc) (mConnInstanceStorage, inGroupID, inNoteInstanceID, inOffsetSampleFrame);
}
#endif
return MusicDeviceStopNote (mUnit, inGroupID, inNoteInstanceID, inOffsetSampleFrame);
#else
return paramErr;
#endif
}
private:
// get the fast dispatch pointers
void Init()
{
#if CA_AU_USE_FAST_DISPATCH
UInt32 size = sizeof(AudioUnitRenderProc);
if (AudioUnitGetProperty(mUnit, kAudioUnitProperty_FastDispatch,
kAudioUnitScope_Global, kAudioUnitRenderSelect,
&mRenderProc, &size) != noErr)
mRenderProc = NULL;
size = sizeof(AudioUnitGetParameterProc);
if (AudioUnitGetProperty(mUnit, kAudioUnitProperty_FastDispatch,
kAudioUnitScope_Global, kAudioUnitGetParameterSelect,
&mGetParamProc, &size) != noErr)
mGetParamProc = NULL;
size = sizeof(AudioUnitSetParameterProc);
if (AudioUnitGetProperty(mUnit, kAudioUnitProperty_FastDispatch,
kAudioUnitScope_Global, kAudioUnitSetParameterSelect,
&mSetParamProc, &size) != noErr)
mSetParamProc = NULL;
size = sizeof(MusicDeviceMIDIEventProc);
if (AudioUnitGetProperty(mUnit, kAudioUnitProperty_FastDispatch,
kAudioUnitScope_Global, kMusicDeviceMIDIEventSelect,
&mMIDIEventProc, &size) != noErr)
mMIDIEventProc = NULL;
2015-10-05 10:17:49 -04:00
size = sizeof(MusicDeviceStartNoteProc);
if (AudioUnitGetProperty(mUnit, kAudioUnitProperty_FastDispatch,
kAudioUnitScope_Global, kMusicDeviceStartNoteSelect,
&mStartNoteProc, &size) != noErr)
mStartNoteProc = NULL;
size = sizeof(MusicDeviceStopNoteProc);
if (AudioUnitGetProperty(mUnit, kAudioUnitProperty_FastDispatch,
kAudioUnitScope_Global, kMusicDeviceStopNoteSelect,
&mStopNoteProc, &size) != noErr)
mStopNoteProc = NULL;
if (mRenderProc || mGetParamProc || mSetParamProc || mMIDIEventProc || mStartNoteProc || mStopNoteProc) {
mConnInstanceStorage = LoadGetComponentInstanceStorage ( mUnit );
} else
mConnInstanceStorage = NULL;
#else
mConnInstanceStorage = NULL;
#endif
}
#if CA_AU_USE_FAST_DISPATCH
AudioUnitRenderProc mRenderProc;
AudioUnitGetParameterProc mGetParamProc;
AudioUnitSetParameterProc mSetParamProc;
MusicDeviceMIDIEventProc mMIDIEventProc;
MusicDeviceStartNoteProc mStartNoteProc;
MusicDeviceStopNoteProc mStopNoteProc;
#endif
void * mConnInstanceStorage;
private:
// get the compiler to tell us when we do a bad thing!!!
AUState () {}
AUState (const AUState&);
AUState& operator= (const AUState&);
};
CAAudioUnit::AUState::~AUState ()
{
if (mUnit && (mNode == 0)) {
::AudioComponentInstanceDispose (mUnit);
}
mNode = 0;
mUnit = 0;
}
OSStatus CAAudioUnit::Open (const CAComponent& inComp, CAAudioUnit &outUnit)
{
try {
outUnit = inComp;
return noErr;
} catch (OSStatus res) {
return res;
} catch (...) {
return -1;
}
}
CAAudioUnit::CAAudioUnit (const AudioUnit& inUnit)
: mComp (inUnit), mDataPtr (new AUState (kCAAU_DoNotKnowIfAUNode, inUnit))
{
}
CAAudioUnit::CAAudioUnit (const CAComponent& inComp)
: mComp (inComp), mDataPtr (new AUState (mComp.Comp()))
{
}
CAAudioUnit::CAAudioUnit (const AUNode &inNode, const AudioUnit& inUnit)
: mComp (inUnit), mDataPtr(new AUState (inNode, inUnit))
{
}
CAAudioUnit::~CAAudioUnit ()
{
Close();
}
void CAAudioUnit::Close()
{
if (mDataPtr) {
mDataPtr->release();
mDataPtr = NULL;
}
}
CAAudioUnit& CAAudioUnit::operator= (const CAAudioUnit &a)
{
if (mDataPtr != a.mDataPtr) {
if (mDataPtr)
mDataPtr->release();
if ((mDataPtr = a.mDataPtr) != NULL)
mDataPtr->retain();
mComp = a.mComp;
}
return *this;
}
bool CAAudioUnit::operator== (const CAAudioUnit& y) const
{
if (mDataPtr == y.mDataPtr) return true;
AudioUnit au1 = mDataPtr ? mDataPtr->mUnit : 0;
AudioUnit au2 = y.mDataPtr ? y.mDataPtr->mUnit : 0;
return au1 == au2;
}
bool CAAudioUnit::operator== (const AudioUnit& y) const
{
if (!mDataPtr) return false;
return mDataPtr->mUnit == y;
}
OSStatus CAAudioUnit::RemovePropertyListener (AudioUnitPropertyID inID,
AudioUnitPropertyListenerProc inProc,
void * inProcUserData)
{
// we call this first. If it fails we call the old API as the failure can
// mean that the AU doesn't implement that selector.
OSStatus result = AudioUnitRemovePropertyListenerWithUserData(AU(), inID,
inProc, inProcUserData);
#if !__LP64__ && !TARGET_OS_IPHONE
if (result) result = AudioUnitRemovePropertyListener (AU(), inID, inProc);
#endif
return result;
}
2015-10-05 10:17:49 -04:00
#pragma mark __State Management
bool CAAudioUnit::IsValid () const
{
return mDataPtr ? mDataPtr->mUnit != 0 : false;
}
AudioUnit CAAudioUnit::AU() const
{
return mDataPtr ? mDataPtr->mUnit : 0;
}
AUNode CAAudioUnit::GetAUNode () const
{
return mDataPtr ? mDataPtr->mNode : 0;
}
#pragma mark __Format Handling
bool CAAudioUnit::CanDo ( int inChannelsIn,
int inChannelsOut) const
{
// 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() && inChannelsIn == inChannelsOut)
|| (Comp().Desc().IsOffline() && inChannelsIn == inChannelsOut))
{
return true;
}
else
{
// the au should either really tell us about this
// or we will assume the worst
return false;
}
}
StackAUChannelInfo info (dataSize);
result = GetProperty (kAudioUnitProperty_SupportedNumChannels,
kAudioUnitScope_Global, 0,
info.mChanInfo, &dataSize);
if (result) { return false; }
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,
UInt32 numChanInfo) const
{
// we've the following cases (some combinations) to test here:
/*
>0 An explicit number of channels on either side
0 that side (generally input!) has no elements
-1 wild card:
-1,-1 any num channels as long as same channels on in and out
-1,-2 any num channels channels on in and out - special meaning
-2+ indicates total num channs AU can handle
- elements configurable to any num channels,
- element count in scope must be writable
*/
//now chan layout can contain -1 for either scope (ie. doesn't care)
for (unsigned int i = 0; i < numChanInfo; ++i)
{
//less than zero on both sides - check for special attributes
if ((info[i].inChannels < 0) && (info[i].outChannels < 0))
{
// these are our wild card matches
if (info[i].inChannels == -1 && info[i].outChannels == -1) {
if (inChannelsIn && inChannelsOut) {
if (inChannelsOut == inChannelsIn)
return true;
} else
return true; // if one of these is zero, then a -1 means any
}
else if ((info[i].inChannels == -1 && info[i].outChannels == -2)
|| (info[i].inChannels == -2 && info[i].outChannels == -1))
{
return true;
}
// these are our total num channels matches
// element count MUST be writable
else {
bool outWrite = false; bool inWrite = false;
IsElementCountWritable (kAudioUnitScope_Output, outWrite);
IsElementCountWritable (kAudioUnitScope_Input, inWrite);
if (inWrite && outWrite) {
if ((inChannelsOut <= abs(info[i].outChannels))
&& (inChannelsIn <= abs(info[i].inChannels)))
{
return true;
}
}
}
}
// special meaning on input, specific num on output
else if (info[i].inChannels < 0) {
if (info[i].outChannels == inChannelsOut)
{
// can do any in channels
if (info[i].inChannels == -1) {
return true;
}
// total chans on input
else {
bool inWrite = false;
IsElementCountWritable (kAudioUnitScope_Input, inWrite);
if (inWrite && (inChannelsIn <= abs(info[i].inChannels))) {
return true;
}
}
}
}
// special meaning on output, specific num on input
else if (info[i].outChannels < 0) {
if (info[i].inChannels == inChannelsIn)
{
// can do any out channels
if (info[i].outChannels == -1) {
return true;
}
// total chans on output
else {
bool outWrite = false;
IsElementCountWritable (kAudioUnitScope_Output, outWrite);
if (outWrite && (inChannelsOut <= abs(info[i].outChannels))) {
return true;
}
}
}
}
// both chans in struct >= 0 - thus has to explicitly match
else if ((info[i].inChannels == inChannelsIn) && (info[i].outChannels == inChannelsOut)) {
return true;
}
// now check to see if a wild card on the args (inChannelsIn or inChannelsOut chans is zero) is found
// tells us to match just one side of the scopes
else if (inChannelsIn == 0) {
if (info[i].outChannels == inChannelsOut) {
return true;
}
}
else if (inChannelsOut == 0) {
if (info[i].inChannels == inChannelsIn) {
return true;
}
}
}
return false;
}
static
bool CheckDynCount (SInt32 inTotalChans, const CAAUChanHelper &inHelper)
{
int totalChans = 0;
for (unsigned int i = 0; i < inHelper.mNumEls; ++i)
totalChans += inHelper.mChans[i];
return (totalChans <= inTotalChans);
}
bool CAAudioUnit::CheckOneSide (const CAAUChanHelper &inHelper,
bool checkOutput,
const AUChannelInfo *info,
UInt32 numInfo) const
{
// now we can use the wildcard option (see above impl) to see if this matches
for (unsigned int el = 0; el < inHelper.mNumEls; ++el) {
bool testAlready = false;
for (unsigned int i = 0; i < el; ++i) {
if (inHelper.mChans[i] == inHelper.mChans[el]) {
testAlready = true;
break;
}
}
if (!testAlready) {
if (checkOutput) {
if (!ValidateChannelPair (0, inHelper.mChans[el], info, numInfo)) return false;
} else {
if (!ValidateChannelPair (inHelper.mChans[el], 0, info, numInfo)) return false;
}
}
}
return true;
}
bool CAAudioUnit::CanDo (const CAAUChanHelper &inputs,
const CAAUChanHelper &outputs) const
{
// first check our state
// huh!
if (inputs.mNumEls == 0 && outputs.mNumEls == 0) return false;
UInt32 elCount;
if (GetElementCount (kAudioUnitScope_Input, elCount)) { return false; }
if (elCount != inputs.mNumEls) return false;
if (GetElementCount (kAudioUnitScope_Output, elCount)) { return false; }
if (elCount != outputs.mNumEls) return false;
// (1) special cases (effects and sources (generators and instruments) only)
UInt32 dataSize = 0;
if (GetPropertyInfo (kAudioUnitProperty_SupportedNumChannels,
kAudioUnitScope_Global, 0, &dataSize, NULL) != noErr)
{
if (Comp().Desc().IsEffect() || Comp().Desc().IsOffline()) {
UInt32 numChan = outputs.mNumEls > 0 ? outputs.mChans[0] : inputs.mChans[0];
for (unsigned int in = 0; in < inputs.mNumEls; ++in)
if (numChan != inputs.mChans[in]) return false;
for (unsigned int out = 0; out < outputs.mNumEls; ++out)
if (numChan != outputs.mChans[out]) return false;
return true;
}
// in this case, all the channels have to match the current config
if (Comp().Desc().IsGenerator() || Comp().Desc().IsMusicDevice()) {
for (unsigned int in = 0; in < inputs.mNumEls; ++in) {
UInt32 chan;
if (NumberChannels (kAudioUnitScope_Input, in, chan)) return false;
if (chan != UInt32(inputs.mChans[in])) return false;
}
for (unsigned int out = 0; out < outputs.mNumEls; ++out) {
UInt32 chan;
if (NumberChannels (kAudioUnitScope_Output, out, chan)) return false;
if (chan != UInt32(outputs.mChans[out])) return false;
}
return true;
}
// if we get here we can't determine anything about channel capabilities
return false;
}
StackAUChannelInfo info (dataSize);
if (GetProperty (kAudioUnitProperty_SupportedNumChannels,
kAudioUnitScope_Global, 0,
info.mChanInfo, &dataSize) != noErr)
{
return false;
}
int numInfo = dataSize / sizeof(AUChannelInfo);
// (2) Test for dynamic capability (or no elements on that scope)
SInt32 dynInChans = 0;
if (ValidateDynamicScope (kAudioUnitScope_Input, dynInChans, info.mChanInfo, numInfo)) {
if (CheckDynCount (dynInChans, inputs) == false) return false;
}
SInt32 dynOutChans = 0;
if (ValidateDynamicScope (kAudioUnitScope_Output, dynOutChans, info.mChanInfo, numInfo)) {
if (CheckDynCount (dynOutChans, outputs) == false) return false;
}
if (dynOutChans && dynInChans) { return true; }
// (3) Just need to test one side
if (dynInChans || (inputs.mNumEls == 0)) {
return CheckOneSide (outputs, true, info.mChanInfo, numInfo);
}
if (dynOutChans || (outputs.mNumEls == 0)) {
return CheckOneSide (inputs, false, info.mChanInfo, numInfo);
}
// (4) - not a dynamic AU, has ins and outs, and has channel constraints so we test every possible pairing
for (unsigned int in = 0; in < inputs.mNumEls; ++in)
{
bool testInAlready = false;
for (unsigned int i = 0; i < in; ++i) {
if (inputs.mChans[i] == inputs.mChans[in]) {
testInAlready = true;
break;
}
}
if (!testInAlready) {
for (unsigned int out = 0; out < outputs.mNumEls; ++out) {
// try to save a little bit and not test the same pairing multiple times...
bool testOutAlready = false;
for (unsigned int i = 0; i < out; ++i) {
if (outputs.mChans[i] == outputs.mChans[out]) {
testOutAlready = true;
break;
}
}
if (!testOutAlready) {
if (!ValidateChannelPair (inputs.mChans[in], outputs.mChans[out],info.mChanInfo, numInfo)) {
return false;
}
}
}
}
}
return true;
}
bool CAAudioUnit::SupportsNumChannels () const
{
// 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() || Comp().Desc().IsOffline())
return true;
}
return result == noErr;
}
OSStatus CAAudioUnit::GetChannelLayoutTags (AudioUnitScope inScope,
AudioUnitElement inEl,
ChannelTagVector &outChannelVector) const
{
if (HasChannelLayouts (inScope, inEl) == false) return kAudioUnitErr_InvalidProperty;
UInt32 dataSize;
OSStatus result = AudioUnitGetPropertyInfo (AU(),
kAudioUnitProperty_SupportedChannelLayoutTags,
inScope, inEl,
&dataSize, NULL);
if (result) return result;
// OK lets get our channel layouts and see if the one we want is present
AudioChannelLayoutTag* info = (AudioChannelLayoutTag*)malloc (dataSize);
result = AudioUnitGetProperty (AU(),
kAudioUnitProperty_SupportedChannelLayoutTags,
inScope, inEl,
info, &dataSize);
if (result) goto home;
outChannelVector.erase (outChannelVector.begin(), outChannelVector.end());
for (unsigned int i = 0; i < (dataSize / sizeof (AudioChannelLayoutTag)); ++i)
outChannelVector.push_back (info[i]);
home:
free (info);
return result;
}
bool CAAudioUnit::HasChannelLayouts (AudioUnitScope inScope,
AudioUnitElement inEl) const
{
OSStatus result = AudioUnitGetPropertyInfo (AU(),
kAudioUnitProperty_SupportedChannelLayoutTags,
inScope, inEl,
NULL, NULL);
return !result;
}
bool CAAudioUnit::HasChannelLayout (AudioUnitScope inScope,
AudioUnitElement inEl) const
{
Boolean writable;
UInt32 size;
return AudioUnitGetPropertyInfo (AU(),
kAudioUnitProperty_AudioChannelLayout,
inScope, inEl,
&size, &writable) == noErr;
}
OSStatus CAAudioUnit::GetChannelLayout (AudioUnitScope inScope,
AudioUnitElement inEl,
CAAudioChannelLayout &outLayout) const
{
UInt32 size;
OSStatus result = AudioUnitGetPropertyInfo (AU(), kAudioUnitProperty_AudioChannelLayout,
inScope, inEl, &size, NULL);
if (result) return result;
AudioChannelLayout *layout = (AudioChannelLayout*)malloc (size);
ca_require_noerr (result = AudioUnitGetProperty (AU(), kAudioUnitProperty_AudioChannelLayout,
inScope, inEl, layout, &size), home);
outLayout = CAAudioChannelLayout (layout);
home:
free (layout);
return result;
}
OSStatus CAAudioUnit::SetChannelLayout (AudioUnitScope inScope,
AudioUnitElement inEl,
const CAAudioChannelLayout &inLayout)
{
OSStatus result = AudioUnitSetProperty (AU(),
kAudioUnitProperty_AudioChannelLayout,
inScope, inEl,
inLayout, inLayout.Size());
return result;
}
OSStatus CAAudioUnit::SetChannelLayout (AudioUnitScope inScope,
AudioUnitElement inEl,
const AudioChannelLayout &inLayout,
UInt32 inSize)
{
OSStatus result = AudioUnitSetProperty (AU(),
kAudioUnitProperty_AudioChannelLayout,
inScope, inEl,
&inLayout, inSize);
return result;
}
OSStatus CAAudioUnit::ClearChannelLayout (AudioUnitScope inScope,
AudioUnitElement inEl)
{
return AudioUnitSetProperty (AU(),
kAudioUnitProperty_AudioChannelLayout,
inScope, inEl, NULL, 0);
}
OSStatus CAAudioUnit::GetFormat (AudioUnitScope inScope,
AudioUnitElement inEl,
AudioStreamBasicDescription &outFormat) const
{
UInt32 dataSize = sizeof (AudioStreamBasicDescription);
return AudioUnitGetProperty (AU(), kAudioUnitProperty_StreamFormat,
inScope, inEl,
&outFormat, &dataSize);
}
OSStatus CAAudioUnit::SetFormat (AudioUnitScope inScope,
AudioUnitElement inEl,
const AudioStreamBasicDescription &inFormat)
{
return AudioUnitSetProperty (AU(), kAudioUnitProperty_StreamFormat,
inScope, inEl,
const_cast<AudioStreamBasicDescription*>(&inFormat),
sizeof (AudioStreamBasicDescription));
}
OSStatus CAAudioUnit::GetSampleRate (AudioUnitScope inScope,
AudioUnitElement inEl,
Float64 &outRate) const
{
UInt32 dataSize = sizeof (Float64);
return AudioUnitGetProperty (AU(), kAudioUnitProperty_SampleRate,
inScope, inEl,
&outRate, &dataSize);
}
OSStatus CAAudioUnit::SetSampleRate (AudioUnitScope inScope,
AudioUnitElement inEl,
Float64 inRate)
{
AudioStreamBasicDescription desc;
OSStatus result = GetFormat (inScope, inEl, desc);
if (result) return result;
desc.mSampleRate = inRate;
return SetFormat (inScope, inEl, desc);
}
OSStatus CAAudioUnit::SetSampleRate (Float64 inSampleRate)
{
OSStatus result;
UInt32 elCount;
ca_require_noerr (result = GetElementCount(kAudioUnitScope_Input, elCount), home);
if (elCount) {
for (unsigned int i = 0; i < elCount; ++i) {
ca_require_noerr (result = SetSampleRate (kAudioUnitScope_Input, i, inSampleRate), home);
}
}
ca_require_noerr (result = GetElementCount(kAudioUnitScope_Output, elCount), home);
if (elCount) {
for (unsigned int i = 0; i < elCount; ++i) {
ca_require_noerr (result = SetSampleRate (kAudioUnitScope_Output, i, inSampleRate), home);
}
}
home:
return result;
}
OSStatus CAAudioUnit::NumberChannels (AudioUnitScope inScope,
AudioUnitElement inEl,
UInt32 &outChans) const
{
AudioStreamBasicDescription desc;
OSStatus result = GetFormat (inScope, inEl, desc);
if (!result)
outChans = desc.mChannelsPerFrame;
return result;
}
OSStatus CAAudioUnit::SetNumberChannels (AudioUnitScope inScope,
AudioUnitElement inEl,
UInt32 inChans)
{
// set this as the output of the AU
CAStreamBasicDescription desc;
OSStatus result = GetFormat (inScope, inEl, desc);
if (result) return result;
desc.ChangeNumberChannels (inChans, desc.IsInterleaved());
result = SetFormat (inScope, inEl, desc);
return result;
}
OSStatus CAAudioUnit::IsElementCountWritable (AudioUnitScope inScope, bool &outWritable) const
{
Boolean isWritable;
UInt32 outDataSize;
OSStatus result = GetPropertyInfo (kAudioUnitProperty_ElementCount, inScope, 0, &outDataSize, &isWritable);
if (result)
return result;
outWritable = isWritable ? true : false;
return noErr;
}
OSStatus CAAudioUnit::GetElementCount (AudioUnitScope inScope, UInt32 &outCount) const
{
UInt32 propSize = sizeof(outCount);
return GetProperty (kAudioUnitProperty_ElementCount, inScope, 0, &outCount, &propSize);
}
OSStatus CAAudioUnit::SetElementCount (AudioUnitScope inScope, UInt32 inCount)
{
return SetProperty (kAudioUnitProperty_ElementCount, inScope, 0, &inCount, sizeof(inCount));
}
bool CAAudioUnit::HasDynamicScope (AudioUnitScope inScope, SInt32 &outTotalNumChannels) const
{
// ok - now we need to check the AU's capability here.
// this is the default assumption of an audio effect unit
Boolean* isWritable = 0;
UInt32 dataSize = 0;
OSStatus result = GetPropertyInfo (kAudioUnitProperty_SupportedNumChannels,
kAudioUnitScope_Global, 0,
&dataSize, isWritable); //don't care if this is writable
// AU has to explicitly tell us about this.
if (result) return false;
StackAUChannelInfo info (dataSize);
result = GetProperty (kAudioUnitProperty_SupportedNumChannels,
kAudioUnitScope_Global, 0,
info.mChanInfo, &dataSize);
if (result) return false;
return ValidateDynamicScope (inScope, outTotalNumChannels, info.mChanInfo, (dataSize / sizeof(AUChannelInfo)));
}
// as we've already checked that the element count is writable
// the following conditions will match this..
/*
-1, -2 -> signifies no restrictions
-2, -1 -> signifies no restrictions -> in this case outTotalNumChannels == -1 (any num channels)
-N (where N is less than -2), signifies the total channel count on the scope side (in or out)
*/
bool CAAudioUnit::ValidateDynamicScope (AudioUnitScope inScope,
SInt32 &outTotalNumChannels,
const AUChannelInfo *info,
UInt32 numInfo) const
{
bool writable = false;
OSStatus result = IsElementCountWritable (inScope, writable);
if (result || (writable == false))
return false;
//now chan layout can contain -1 for either scope (ie. doesn't care)
for (unsigned int i = 0; i < numInfo; ++i)
{
// lets test the special wild card case first...
// this says the AU can do any num channels on input or output - for eg. Matrix Mixer
if (((info[i].inChannels == -1) && (info[i].outChannels == -2))
|| ((info[i].inChannels == -2) && (info[i].outChannels == -1)))
{
outTotalNumChannels = -1;
return true;
}
// ok lets now test our special case....
if (inScope == kAudioUnitScope_Input) {
// isn't dynamic on this side at least
if (info[i].inChannels >= 0)
continue;
if (info[i].inChannels < -2) {
outTotalNumChannels = abs (info[i].inChannels);
return true;
}
}
else if (inScope == kAudioUnitScope_Output) {
// isn't dynamic on this side at least
if (info[i].outChannels >= 0)
continue;
if (info[i].outChannels < -2) {
outTotalNumChannels = abs (info[i].outChannels);
return true;
}
}
else {
break; // wrong scope was specified
}
}
return false;
}
OSStatus CAAudioUnit::ConfigureDynamicScope (AudioUnitScope inScope,
UInt32 inNumElements,
UInt32 *inChannelsPerElement,
Float64 inSampleRate)
{
SInt32 numChannels = 0;
bool isDyamic = HasDynamicScope (inScope, numChannels);
if (isDyamic == false)
return kAudioUnitErr_InvalidProperty;
//lets to a sanity check...
// if numChannels == -1, then it can do "any"...
if (numChannels > 0) {
SInt32 count = 0;
for (unsigned int i = 0; i < inNumElements; ++i)
count += inChannelsPerElement[i];
if (count > numChannels)
return kAudioUnitErr_InvalidPropertyValue;
}
OSStatus result = SetElementCount (inScope, inNumElements);
if (result)
return result;
for (unsigned int i = 0; i < inNumElements; ++i) {
CAStreamBasicDescription desc;
result = GetFormat (inScope, i, desc);
if (result) return result;
desc.ChangeNumberChannels (inChannelsPerElement[i], desc.IsInterleaved());
desc.mSampleRate = inSampleRate;
result = SetFormat (inScope, i, desc);
if (result)
return result;
}
return noErr;
}
#pragma mark __Properties
bool CAAudioUnit::CanBypass () const
{
Boolean outWritable;
OSStatus result = AudioUnitGetPropertyInfo (AU(), kAudioUnitProperty_BypassEffect,
kAudioUnitScope_Global, 0,
NULL, &outWritable);
return (!result && outWritable);
}
bool CAAudioUnit::GetBypass () const
{
UInt32 dataSize = sizeof (UInt32);
UInt32 outBypass;
OSStatus result = AudioUnitGetProperty (AU(), kAudioUnitProperty_BypassEffect,
kAudioUnitScope_Global, 0,
&outBypass, &dataSize);
return (result ? false : outBypass);
}
OSStatus CAAudioUnit::SetBypass (bool inBypass) const
{
UInt32 bypass = inBypass ? 1 : 0;
return AudioUnitSetProperty (AU(), kAudioUnitProperty_BypassEffect,
kAudioUnitScope_Global, 0,
&bypass, sizeof (UInt32));
}
OSStatus CAAudioUnit::GetMaxFramesPerSlice (UInt32& outMaxFrames) const
{
UInt32 dataSize = sizeof(outMaxFrames);
return AudioUnitGetProperty (AU(), kAudioUnitProperty_MaximumFramesPerSlice,
kAudioUnitScope_Global, 0,
&outMaxFrames, &dataSize);
}
OSStatus CAAudioUnit::SetMaxFramesPerSlice (UInt32 inMaxFrames)
{
return AudioUnitSetProperty (AU(), kAudioUnitProperty_MaximumFramesPerSlice,
kAudioUnitScope_Global, 0,
&inMaxFrames, sizeof (UInt32));
}
Float64 CAAudioUnit::Latency () const
{
Float64 secs;
UInt32 size = sizeof(secs);
if (GetProperty (kAudioUnitProperty_Latency, kAudioUnitScope_Global, 0, &secs, &size))
return 0;
return secs;
}
OSStatus CAAudioUnit::GetAUPreset (CFPropertyListRef &outData) const
{
UInt32 dataSize = sizeof(outData);
return AudioUnitGetProperty (AU(), kAudioUnitProperty_ClassInfo,
kAudioUnitScope_Global, 0,
&outData, &dataSize);
}
OSStatus CAAudioUnit::SetAUPreset (CFPropertyListRef &inData)
{
return AudioUnitSetProperty (AU(), kAudioUnitProperty_ClassInfo,
kAudioUnitScope_Global, 0,
&inData, sizeof (CFPropertyListRef));
}
#if !TARGET_OS_IPHONE
OSStatus CAAudioUnit::SetAUPresetFromDocument (CFPropertyListRef &inData)
{
return AudioUnitSetProperty (AU(), kAudioUnitProperty_ClassInfoFromDocument,
kAudioUnitScope_Global, 0,
&inData, sizeof (CFPropertyListRef));
}
#endif
OSStatus CAAudioUnit::GetPresentPreset (AUPreset &outData) const
{
UInt32 dataSize = sizeof(outData);
OSStatus result = AudioUnitGetProperty (AU(), kAudioUnitProperty_PresentPreset,
kAudioUnitScope_Global, 0,
&outData, &dataSize);
#if !TARGET_OS_IPHONE
#ifndef __LP64__
if (result == kAudioUnitErr_InvalidProperty) {
dataSize = sizeof(outData);
result = AudioUnitGetProperty (AU(), kAudioUnitProperty_CurrentPreset,
kAudioUnitScope_Global, 0,
&outData, &dataSize);
if (result == noErr) {
// we now retain the CFString in the preset so for the client of this API
// it is consistent (ie. the string should be released when done)
if (outData.presetName)
CFRetain (outData.presetName);
}
}
#endif
#endif
return result;
}
OSStatus CAAudioUnit::SetPresentPreset (AUPreset &inData)
{
OSStatus result = AudioUnitSetProperty (AU(), kAudioUnitProperty_PresentPreset,
kAudioUnitScope_Global, 0,
&inData, sizeof (AUPreset));
#if !TARGET_OS_IPHONE
#ifndef __LP64__
if (result == kAudioUnitErr_InvalidProperty) {
result = AudioUnitSetProperty (AU(), kAudioUnitProperty_CurrentPreset,
kAudioUnitScope_Global, 0,
&inData, sizeof (AUPreset));
}
#endif
#endif
return result;
}
bool CAAudioUnit::HasCustomView () const
{
#if !TARGET_OS_IPHONE
UInt32 dataSize = 0;
OSStatus result = -4/*unimpErr*/;
#ifndef __LP64__
result = GetPropertyInfo(kAudioUnitProperty_GetUIComponentList,
kAudioUnitScope_Global, 0,
&dataSize, NULL);
#endif
if (result || !dataSize) {
dataSize = 0;
result = GetPropertyInfo(kAudioUnitProperty_CocoaUI,
kAudioUnitScope_Global, 0,
&dataSize, NULL);
if (result || !dataSize)
return false;
}
return true;
#else
return false;
#endif
}
OSStatus CAAudioUnit::GetParameter(AudioUnitParameterID inID, AudioUnitScope scope, AudioUnitElement element,
Float32 &outValue) const
{
return mDataPtr ? mDataPtr->GetParameter (inID, scope, element, outValue) : static_cast<OSStatus>(paramErr);
}
OSStatus CAAudioUnit::SetParameter(AudioUnitParameterID inID, AudioUnitScope scope, AudioUnitElement element,
Float32 value, UInt32 bufferOffsetFrames)
{
return mDataPtr ? mDataPtr->SetParameter (inID, scope, element, value, bufferOffsetFrames) : static_cast<OSStatus>(paramErr);
}
OSStatus CAAudioUnit::MIDIEvent (UInt32 inStatus,
UInt32 inData1,
UInt32 inData2,
UInt32 inOffsetSampleFrame)
{
return mDataPtr ? mDataPtr->MIDIEvent (inStatus, inData1, inData2, inOffsetSampleFrame) : paramErr;
}
OSStatus CAAudioUnit::StartNote (MusicDeviceInstrumentID inInstrument,
MusicDeviceGroupID inGroupID,
NoteInstanceID * outNoteInstanceID,
UInt32 inOffsetSampleFrame,
const MusicDeviceNoteParams * inParams)
{
return mDataPtr ? 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;
}
#pragma mark __Render
OSStatus CAAudioUnit::Render (AudioUnitRenderActionFlags * ioActionFlags,
const AudioTimeStamp * inTimeStamp,
UInt32 inOutputBusNumber,
UInt32 inNumberFrames,
AudioBufferList * ioData)
{
return mDataPtr ? mDataPtr->Render (ioActionFlags, inTimeStamp, inOutputBusNumber, inNumberFrames, ioData) : static_cast<OSStatus>(paramErr);
}
extern "C" OSStatus
AudioUnitProcess ( AudioUnit inUnit,
AudioUnitRenderActionFlags * ioActionFlags,
const AudioTimeStamp * inTimeStamp,
UInt32 inNumberFrames,
AudioBufferList * ioData);
OSStatus CAAudioUnit::Process (AudioUnitRenderActionFlags & ioActionFlags,
const AudioTimeStamp & inTimeStamp,
UInt32 inNumberFrames,
AudioBufferList & ioData)
{
#if defined(__MAC_10_7) || defined(__IPHONE_4_0)
return AudioUnitProcess (AU(), &ioActionFlags, &inTimeStamp, inNumberFrames, &ioData);
#else
return -4/*unimpErr*/;
#endif
}
extern "C" OSStatus
AudioUnitProcessMultiple ( AudioUnit inUnit,
AudioUnitRenderActionFlags * ioActionFlags,
const AudioTimeStamp * inTimeStamp,
UInt32 inNumberFrames,
UInt32 inNumberInputBufferLists,
const AudioBufferList ** inInputBufferLists,
UInt32 inNumberOutputBufferLists,
AudioBufferList ** ioOutputBufferLists);
OSStatus CAAudioUnit::ProcessMultiple (AudioUnitRenderActionFlags & ioActionFlags,
const AudioTimeStamp & inTimeStamp,
UInt32 inNumberFrames,
UInt32 inNumberInputBufferLists,
const AudioBufferList ** inInputBufferLists,
UInt32 inNumberOutputBufferLists,
AudioBufferList ** ioOutputBufferLists)
{
#if defined(__MAC_10_7) || defined(__IPHONE_4_0)
return AudioUnitProcessMultiple (AU(), &ioActionFlags, &inTimeStamp, inNumberFrames,
inNumberInputBufferLists, inInputBufferLists, inNumberOutputBufferLists, ioOutputBufferLists);
#else
return -4/*unimpErr*/;
#endif
}
#pragma mark __CAAUChanHelper
CAAUChanHelper::CAAUChanHelper(const CAAudioUnit &inAU, AudioUnitScope inScope)
:mChans(NULL), mNumEls(0), mDidAllocate(false)
{
UInt32 elCount;
if (inAU.GetElementCount (inScope, elCount)) return;
if (elCount > kStaticElCount) {
mChans = new UInt32[elCount];
mDidAllocate = true;
memset (mChans, 0, sizeof(int) * elCount);
} else {
mChans = mStaticChans;
memset (mChans, 0, sizeof(int) * kStaticElCount);
}
for (unsigned int i = 0; i < elCount; ++i) {
UInt32 numChans;
if (inAU.NumberChannels (inScope, i, numChans)) return;
mChans[i] = numChans;
}
mNumEls = elCount;
}
CAAUChanHelper::CAAUChanHelper(UInt32 inMaxElems)
: mNumEls(inMaxElems), mDidAllocate(false)
{
if (inMaxElems > kStaticElCount) {
mChans = new UInt32[inMaxElems];
mDidAllocate = true;
memset (mChans, 0, sizeof(int) * inMaxElems);
} else {
mChans = mStaticChans;
memset (mChans, 0, sizeof(int) * kStaticElCount);
}
}
CAAUChanHelper::~CAAUChanHelper()
{
if (mDidAllocate) delete [] mChans;
}
CAAUChanHelper& CAAUChanHelper::operator= (const CAAUChanHelper &c)
{
if (mDidAllocate) delete [] mChans;
if (c.mDidAllocate) {
mChans = new UInt32[c.mNumEls];
mDidAllocate = true;
} else {
mDidAllocate = false;
mChans = mStaticChans;
}
memcpy (mChans, c.mChans, c.mNumEls * sizeof(int));
return *this;
}
#pragma mark __Print Utilities
void CAAudioUnit::Print (FILE* file) const
{
fprintf (file, "AudioUnit:%p\n", AU());
if (IsValid()) {
fprintf (file, "\tnode=%ld\t", (long)GetAUNode()); Comp().Print (file);
}
}
#if CA_AU_USE_FAST_DISPATCH
// Handle GetComponentInstanceStorage(ComponentInstance aComponentInstance)
static void *LoadGetComponentInstanceStorage (void *inst)
{
typedef void* (*GetComponentInstanceStorageProc)(void* aComponentInstance);
static GetComponentInstanceStorageProc sGetComponentInstanceStorageProc = NULL;
static int sDoCSLoad = 1;
if (sDoCSLoad) {
sDoCSLoad = 0;
void *theImage = dlopen("/System/Library/Frameworks/CoreServices.framework/CoreServices", RTLD_LAZY);
if (!theImage) return NULL;
sGetComponentInstanceStorageProc = (GetComponentInstanceStorageProc) dlsym(theImage, "GetComponentInstanceStorage");
}
if (sGetComponentInstanceStorageProc)
return (*sGetComponentInstanceStorageProc)(inst);
return NULL;
}
#endif