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+/*
+ File: CAAudioUnit.cpp
+ Abstract: CAAudioUnit.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 "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;
+
+ 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;
+}
+
+#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
+