+++ /dev/null
-/*
- * $Id$
- * pa_mac_core.c
- * Implementation of PortAudio for Mac OS X CoreAudio
- *
- * PortAudio Portable Real-Time Audio Library
- * Latest Version at: http://www.portaudio.com
- *
- * Authors: Ross Bencina and Phil Burk
- * Copyright (c) 1999-2000 Ross Bencina and Phil Burk
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files
- * (the "Software"), to deal in the Software without restriction,
- * including without limitation the rights to use, copy, modify, merge,
- * publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so,
- * subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
- * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-/*
- * The text above constitutes the entire PortAudio license; however,
- * the PortAudio community also makes the following non-binding requests:
- *
- * Any person wishing to distribute modifications to the Software is
- * requested to send the modifications to the original developer so that
- * they can be incorporated into the canonical version. It is also
- * requested that these non-binding requests be included along with the
- * license above.
- */
-
-#include <CoreAudio/CoreAudio.h>
-#include <AudioToolbox/AudioToolbox.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-#include <assert.h>
-
-#include "portaudio.h"
-#include "pa_trace.h"
-#include "pa_util.h"
-#include "pa_allocation.h"
-#include "pa_hostapi.h"
-#include "pa_stream.h"
-#include "pa_cpuload.h"
-#include "pa_process.h"
-
-// ===== constants =====
-
-// ===== structs =====
-#pragma mark structs
-
-// PaMacCoreHostApiRepresentation - host api datastructure specific to this implementation
-typedef struct PaMacCore_HAR
-{
- PaUtilHostApiRepresentation inheritedHostApiRep;
- PaUtilStreamInterface callbackStreamInterface;
- PaUtilStreamInterface blockingStreamInterface;
-
- PaUtilAllocationGroup *allocations;
- AudioDeviceID *macCoreDeviceIds;
-}
-PaMacCoreHostApiRepresentation;
-
-typedef struct PaMacCore_DI
-{
- PaDeviceInfo inheritedDeviceInfo;
-}
-PaMacCoreDeviceInfo;
-
-// PaMacCoreStream - a stream data structure specifically for this implementation
-typedef struct PaMacCore_S
-{
- PaUtilStreamRepresentation streamRepresentation;
- PaUtilCpuLoadMeasurer cpuLoadMeasurer;
- PaUtilBufferProcessor bufferProcessor;
-
- int primeStreamUsingCallback;
-
- AudioDeviceID inputDevice;
- AudioDeviceID outputDevice;
-
- // Processing thread management --------------
-// HANDLE abortEvent;
-// HANDLE processingThread;
-// DWORD processingThreadId;
-
- char throttleProcessingThreadOnOverload; // 0 -> don't throttle, non-0 -> throttle
- int processingThreadPriority;
- int highThreadPriority;
- int throttledThreadPriority;
- unsigned long throttledSleepMsecs;
-
- int isStopped;
- volatile int isActive;
- volatile int stopProcessing; // stop thread once existing buffers have been returned
- volatile int abortProcessing; // stop thread immediately
-
-// DWORD allBuffersDurationMs; // used to calculate timeouts
-}
-PaMacCoreStream;
-
-// Data needed by the CoreAudio callback functions
-typedef struct PaMacCore_CD
-{
- PaMacCoreStream *stream;
- PaStreamCallback *callback;
- void *userData;
- PaUtilConverter *inputConverter;
- PaUtilConverter *outputConverter;
- void *inputBuffer;
- void *outputBuffer;
- int inputChannelCount;
- int outputChannelCount;
- PaSampleFormat inputSampleFormat;
- PaSampleFormat outputSampleFormat;
- PaUtilTriangularDitherGenerator *ditherGenerator;
-}
-PaMacClientData;
-
-// ===== CoreAudio-PortAudio bridge functions =====
-#pragma mark CoreAudio-PortAudio bridge functions
-
-// Maps CoreAudio OSStatus codes to PortAudio PaError codes
-static PaError conv_err(OSStatus error)
-{
- PaError result;
-
- switch (error) {
- case kAudioHardwareNoError:
- result = paNoError; break;
- case kAudioHardwareNotRunningError:
- result = paInternalError; break;
- case kAudioHardwareUnspecifiedError:
- result = paInternalError; break;
- case kAudioHardwareUnknownPropertyError:
- result = paInternalError; break;
- case kAudioHardwareBadPropertySizeError:
- result = paInternalError; break;
- case kAudioHardwareIllegalOperationError:
- result = paInternalError; break;
- case kAudioHardwareBadDeviceError:
- result = paInvalidDevice; break;
- case kAudioHardwareBadStreamError:
- result = paBadStreamPtr; break;
- case kAudioHardwareUnsupportedOperationError:
- result = paInternalError; break;
- case kAudioDeviceUnsupportedFormatError:
- result = paSampleFormatNotSupported; break;
- case kAudioDevicePermissionsError:
- result = paDeviceUnavailable; break;
- default:
- result = paInternalError;
- }
-
- return result;
-}
-
-/* This function is unused
-static AudioStreamBasicDescription *InitializeStreamDescription(const PaStreamParameters *parameters, double sampleRate)
-{
- struct AudioStreamBasicDescription *streamDescription = PaUtil_AllocateMemory(sizeof(AudioStreamBasicDescription));
- streamDescription->mSampleRate = sampleRate;
- streamDescription->mFormatID = kAudioFormatLinearPCM;
- streamDescription->mFormatFlags = 0;
- streamDescription->mFramesPerPacket = 1;
-
- if (parameters->sampleFormat & paNonInterleaved) {
- streamDescription->mFormatFlags |= kLinearPCMFormatFlagIsNonInterleaved;
- streamDescription->mChannelsPerFrame = 1;
- streamDescription->mBytesPerFrame = Pa_GetSampleSize(parameters->sampleFormat);
- streamDescription->mBytesPerPacket = Pa_GetSampleSize(parameters->sampleFormat);
- }
- else {
- streamDescription->mChannelsPerFrame = parameters->channelCount;
- }
-
- streamDescription->mBytesPerFrame = Pa_GetSampleSize(parameters->sampleFormat) * streamDescription->mChannelsPerFrame;
- streamDescription->mBytesPerPacket = streamDescription->mBytesPerFrame * streamDescription->mFramesPerPacket;
-
- if (parameters->sampleFormat & paFloat32) {
- streamDescription->mFormatFlags |= kLinearPCMFormatFlagIsFloat;
- streamDescription->mBitsPerChannel = 32;
- }
- else if (parameters->sampleFormat & paInt32) {
- streamDescription->mFormatFlags |= kLinearPCMFormatFlagIsSignedInteger;
- streamDescription->mBitsPerChannel = 32;
- }
- else if (parameters->sampleFormat & paInt24) {
- streamDescription->mFormatFlags |= kLinearPCMFormatFlagIsSignedInteger;
- streamDescription->mBitsPerChannel = 24;
- }
- else if (parameters->sampleFormat & paInt16) {
- streamDescription->mFormatFlags |= kLinearPCMFormatFlagIsSignedInteger;
- streamDescription->mBitsPerChannel = 16;
- }
- else if (parameters->sampleFormat & paInt8) {
- streamDescription->mFormatFlags |= kLinearPCMFormatFlagIsSignedInteger;
- streamDescription->mBitsPerChannel = 8;
- }
- else if (parameters->sampleFormat & paInt32) {
- streamDescription->mBitsPerChannel = 8;
- }
-
- return streamDescription;
-}
-*/
-
-static PaStreamCallbackTimeInfo *InitializeTimeInfo(const AudioTimeStamp* now, const AudioTimeStamp* inputTime, const AudioTimeStamp* outputTime)
-{
- PaStreamCallbackTimeInfo *timeInfo = PaUtil_AllocateMemory(sizeof(PaStreamCallbackTimeInfo));
-
- timeInfo->inputBufferAdcTime = inputTime->mSampleTime;
- timeInfo->currentTime = now->mSampleTime;
- timeInfo->outputBufferDacTime = outputTime->mSampleTime;
-
- return timeInfo;
-}
-
-// ===== support functions =====
-#pragma mark support functions
-
-static void CleanUp(PaMacCoreHostApiRepresentation *macCoreHostApi)
-{
- if( macCoreHostApi->allocations )
- {
- PaUtil_FreeAllAllocations( macCoreHostApi->allocations );
- PaUtil_DestroyAllocationGroup( macCoreHostApi->allocations );
- }
-
- PaUtil_FreeMemory( macCoreHostApi );
-}
-
-static PaError GetChannelInfo(PaDeviceInfo *deviceInfo, AudioDeviceID macCoreDeviceId, int isInput)
-{
- UInt32 propSize;
- PaError err = paNoError;
- UInt32 i;
- int numChannels = 0;
- AudioBufferList *buflist;
-
- err = conv_err(AudioDeviceGetPropertyInfo(macCoreDeviceId, 0, isInput, kAudioDevicePropertyStreamConfiguration, &propSize, NULL));
- buflist = PaUtil_AllocateMemory(propSize);
- err = conv_err(AudioDeviceGetProperty(macCoreDeviceId, 0, isInput, kAudioDevicePropertyStreamConfiguration, &propSize, buflist));
- if (!err) {
- for (i = 0; i < buflist->mNumberBuffers; ++i) {
- numChannels += buflist->mBuffers[i].mNumberChannels;
- }
-
- if (isInput)
- deviceInfo->maxInputChannels = numChannels;
- else
- deviceInfo->maxOutputChannels = numChannels;
-
- int frameLatency;
- propSize = sizeof(UInt32);
- err = conv_err(AudioDeviceGetProperty(macCoreDeviceId, 0, isInput, kAudioDevicePropertyLatency, &propSize, &frameLatency));
- if (!err) {
- double secondLatency = frameLatency / deviceInfo->defaultSampleRate;
- if (isInput) {
- deviceInfo->defaultLowInputLatency = secondLatency;
- deviceInfo->defaultHighInputLatency = secondLatency;
- }
- else {
- deviceInfo->defaultLowOutputLatency = secondLatency;
- deviceInfo->defaultHighOutputLatency = secondLatency;
- }
- }
- }
- PaUtil_FreeMemory(buflist);
-
- return err;
-}
-
-static PaError InitializeDeviceInfo(PaMacCoreDeviceInfo *macCoreDeviceInfo, AudioDeviceID macCoreDeviceId, PaHostApiIndex hostApiIndex )
-{
- PaDeviceInfo *deviceInfo = &macCoreDeviceInfo->inheritedDeviceInfo;
- deviceInfo->structVersion = 2;
- deviceInfo->hostApi = hostApiIndex;
-
- PaError err = paNoError;
- UInt32 propSize;
-
- err = conv_err(AudioDeviceGetPropertyInfo(macCoreDeviceId, 0, 0, kAudioDevicePropertyDeviceName, &propSize, NULL));
- // FIXME: this allocation should be part of the allocations group
- char *name = PaUtil_AllocateMemory(propSize);
- err = conv_err(AudioDeviceGetProperty(macCoreDeviceId, 0, 0, kAudioDevicePropertyDeviceName, &propSize, name));
- if (!err) {
- deviceInfo->name = name;
- }
-
- Float64 sampleRate;
- propSize = sizeof(Float64);
- err = conv_err(AudioDeviceGetProperty(macCoreDeviceId, 0, 0, kAudioDevicePropertyNominalSampleRate, &propSize, &sampleRate));
- if (!err) {
- deviceInfo->defaultSampleRate = sampleRate;
- }
-
-
- // Get channel info
- err = GetChannelInfo(deviceInfo, macCoreDeviceId, 1);
- err = GetChannelInfo(deviceInfo, macCoreDeviceId, 0);
-
- return err;
-}
-
-static PaError InitializeDeviceInfos( PaMacCoreHostApiRepresentation *macCoreHostApi, PaHostApiIndex hostApiIndex )
-{
- PaError result = paNoError;
- PaUtilHostApiRepresentation *hostApi;
- PaMacCoreDeviceInfo *deviceInfoArray;
-
- // initialise device counts and default devices under the assumption that there are no devices. These values are incremented below if and when devices are successfully initialized.
- hostApi = &macCoreHostApi->inheritedHostApiRep;
- hostApi->info.deviceCount = 0;
- hostApi->info.defaultInputDevice = paNoDevice;
- hostApi->info.defaultOutputDevice = paNoDevice;
-
- UInt32 propsize;
- AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices, &propsize, NULL);
- int numDevices = propsize / sizeof(AudioDeviceID);
- hostApi->info.deviceCount = numDevices;
- if (numDevices > 0) {
- hostApi->deviceInfos = (PaDeviceInfo**)PaUtil_GroupAllocateMemory(
- macCoreHostApi->allocations, sizeof(PaDeviceInfo*) * numDevices );
- if( !hostApi->deviceInfos )
- {
- return paInsufficientMemory;
- }
-
- // allocate all device info structs in a contiguous block
- deviceInfoArray = (PaMacCoreDeviceInfo*)PaUtil_GroupAllocateMemory(
- macCoreHostApi->allocations, sizeof(PaMacCoreDeviceInfo) * numDevices );
- if( !deviceInfoArray )
- {
- return paInsufficientMemory;
- }
-
- macCoreHostApi->macCoreDeviceIds = PaUtil_GroupAllocateMemory(macCoreHostApi->allocations, propsize);
- AudioHardwareGetProperty(kAudioHardwarePropertyDevices, &propsize, macCoreHostApi->macCoreDeviceIds);
-
- AudioDeviceID defaultInputDevice, defaultOutputDevice;
- propsize = sizeof(AudioDeviceID);
- AudioHardwareGetProperty(kAudioHardwarePropertyDefaultInputDevice, &propsize, &defaultInputDevice);
- AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice, &propsize, &defaultOutputDevice);
-
- UInt32 i;
- for (i = 0; i < numDevices; ++i) {
- if (macCoreHostApi->macCoreDeviceIds[i] == defaultInputDevice) {
- hostApi->info.defaultInputDevice = i;
- }
- if (macCoreHostApi->macCoreDeviceIds[i] == defaultOutputDevice) {
- hostApi->info.defaultOutputDevice = i;
- }
- InitializeDeviceInfo(&deviceInfoArray[i], macCoreHostApi->macCoreDeviceIds[i], hostApiIndex);
- hostApi->deviceInfos[i] = &(deviceInfoArray[i].inheritedDeviceInfo);
- }
- }
-
- return result;
-}
-
-static OSStatus CheckFormat(AudioDeviceID macCoreDeviceId, const PaStreamParameters *parameters, double sampleRate, int isInput)
-{
- UInt32 propSize = sizeof(AudioStreamBasicDescription);
- AudioStreamBasicDescription *streamDescription = PaUtil_AllocateMemory(propSize);
-
- streamDescription->mSampleRate = sampleRate;
- streamDescription->mFormatID = 0;
- streamDescription->mFormatFlags = 0;
- streamDescription->mBytesPerPacket = 0;
- streamDescription->mFramesPerPacket = 0;
- streamDescription->mBytesPerFrame = 0;
- streamDescription->mChannelsPerFrame = 0;
- streamDescription->mBitsPerChannel = 0;
- streamDescription->mReserved = 0;
-
- OSStatus result = AudioDeviceGetProperty(macCoreDeviceId, 0, isInput, kAudioDevicePropertyStreamFormatSupported, &propSize, streamDescription);
- PaUtil_FreeMemory(streamDescription);
- return result;
-}
-
-static OSStatus CopyInputData(PaMacClientData* destination, const AudioBufferList *source, unsigned long frameCount)
-{
- int frameSpacing, channelSpacing;
- if (destination->inputSampleFormat & paNonInterleaved) {
- frameSpacing = 1;
- channelSpacing = destination->inputChannelCount;
- }
- else {
- frameSpacing = destination->inputChannelCount;
- channelSpacing = 1;
- }
-
- AudioBuffer const *inputBuffer = &source->mBuffers[0];
- void *coreAudioBuffer = inputBuffer->mData;
- void *portAudioBuffer = destination->inputBuffer;
- UInt32 i, streamNumber, streamChannel;
- for (i = streamNumber = streamChannel = 0; i < destination->inputChannelCount; ++i, ++streamChannel) {
- if (streamChannel >= inputBuffer->mNumberChannels) {
- ++streamNumber;
- inputBuffer = &source->mBuffers[streamNumber];
- coreAudioBuffer = inputBuffer->mData;
- streamChannel = 0;
- }
- destination->inputConverter(portAudioBuffer, frameSpacing, coreAudioBuffer, inputBuffer->mNumberChannels, frameCount, destination->ditherGenerator);
- coreAudioBuffer += sizeof(Float32);
- portAudioBuffer += Pa_GetSampleSize(destination->inputSampleFormat) * channelSpacing;
- }
- return noErr;
-}
-
-static OSStatus CopyOutputData(AudioBufferList* destination, PaMacClientData *source, unsigned long frameCount)
-{
- int frameSpacing, channelSpacing;
- if (source->outputSampleFormat & paNonInterleaved) {
- frameSpacing = 1;
- channelSpacing = source->outputChannelCount;
- }
- else {
- frameSpacing = source->outputChannelCount;
- channelSpacing = 1;
- }
-
- AudioBuffer *outputBuffer = &destination->mBuffers[0];
- void *coreAudioBuffer = outputBuffer->mData;
- void *portAudioBuffer = source->outputBuffer;
- UInt32 i, streamNumber, streamChannel;
- for (i = streamNumber = streamChannel = 0; i < source->outputChannelCount; ++i, ++streamChannel) {
- if (streamChannel >= outputBuffer->mNumberChannels) {
- ++streamNumber;
- outputBuffer = &destination->mBuffers[streamNumber];
- coreAudioBuffer = outputBuffer->mData;
- streamChannel = 0;
- }
- source->outputConverter(coreAudioBuffer, outputBuffer->mNumberChannels, portAudioBuffer, frameSpacing, frameCount, NULL);
- coreAudioBuffer += sizeof(Float32);
- portAudioBuffer += Pa_GetSampleSize(source->outputSampleFormat) * channelSpacing;
- }
- return noErr;
-}
-
-static OSStatus AudioIOProc( AudioDeviceID inDevice,
- const AudioTimeStamp* inNow,
- const AudioBufferList* inInputData,
- const AudioTimeStamp* inInputTime,
- AudioBufferList* outOutputData,
- const AudioTimeStamp* inOutputTime,
- void* inClientData)
-{
- PaMacClientData *clientData = (PaMacClientData *)inClientData;
- PaStreamCallbackTimeInfo *timeInfo = InitializeTimeInfo(inNow, inInputTime, inOutputTime);
-
- PaUtil_BeginCpuLoadMeasurement( &clientData->stream->cpuLoadMeasurer );
-
- AudioBuffer *outputBuffer = &outOutputData->mBuffers[0];
- unsigned long frameCount = outputBuffer->mDataByteSize / (outputBuffer->mNumberChannels * sizeof(Float32));
-
- if (clientData->inputBuffer) {
- CopyInputData(clientData, inInputData, frameCount);
- }
- PaStreamCallbackResult result = clientData->callback(clientData->inputBuffer, clientData->outputBuffer, frameCount, timeInfo, paNoFlag, clientData->userData);
- if (clientData->outputBuffer) {
- CopyOutputData(outOutputData, clientData, frameCount);
- }
-
- PaUtil_EndCpuLoadMeasurement( &clientData->stream->cpuLoadMeasurer, frameCount );
-
- if (result == paComplete || result == paAbort) {
- Pa_StopStream(clientData->stream);
- }
-
- PaUtil_FreeMemory( timeInfo );
- return noErr;
-}
-
-// This is not for input-only streams, this is for streams where the input device is different from the output device
-static OSStatus AudioInputProc( AudioDeviceID inDevice,
- const AudioTimeStamp* inNow,
- const AudioBufferList* inInputData,
- const AudioTimeStamp* inInputTime,
- AudioBufferList* outOutputData,
- const AudioTimeStamp* inOutputTime,
- void* inClientData)
-{
- PaMacClientData *clientData = (PaMacClientData *)inClientData;
- PaStreamCallbackTimeInfo *timeInfo = InitializeTimeInfo(inNow, inInputTime, inOutputTime);
-
- PaUtil_BeginCpuLoadMeasurement( &clientData->stream->cpuLoadMeasurer );
-
- AudioBuffer const *inputBuffer = &inInputData->mBuffers[0];
- unsigned long frameCount = inputBuffer->mDataByteSize / (inputBuffer->mNumberChannels * sizeof(Float32));
-
- CopyInputData(clientData, inInputData, frameCount);
- PaStreamCallbackResult result = clientData->callback(clientData->inputBuffer, clientData->outputBuffer, frameCount, timeInfo, paNoFlag, clientData->userData);
-
- PaUtil_EndCpuLoadMeasurement( &clientData->stream->cpuLoadMeasurer, frameCount );
- if( result == paComplete || result == paAbort )
- Pa_StopStream(clientData->stream);
- PaUtil_FreeMemory( timeInfo );
- return noErr;
-}
-
-// This is not for output-only streams, this is for streams where the input device is different from the output device
-static OSStatus AudioOutputProc( AudioDeviceID inDevice,
- const AudioTimeStamp* inNow,
- const AudioBufferList* inInputData,
- const AudioTimeStamp* inInputTime,
- AudioBufferList* outOutputData,
- const AudioTimeStamp* inOutputTime,
- void* inClientData)
-{
- PaMacClientData *clientData = (PaMacClientData *)inClientData;
- //PaStreamCallbackTimeInfo *timeInfo = InitializeTimeInfo(inNow, inInputTime, inOutputTime);
-
- PaUtil_BeginCpuLoadMeasurement( &clientData->stream->cpuLoadMeasurer );
-
- AudioBuffer *outputBuffer = &outOutputData->mBuffers[0];
- unsigned long frameCount = outputBuffer->mDataByteSize / (outputBuffer->mNumberChannels * sizeof(Float32));
-
- //clientData->callback(NULL, clientData->outputBuffer, frameCount, timeInfo, paNoFlag, clientData->userData);
-
- CopyOutputData(outOutputData, clientData, frameCount);
-
- PaUtil_EndCpuLoadMeasurement( &clientData->stream->cpuLoadMeasurer, frameCount );
- return noErr;
-}
-
-static PaError SetSampleRate(AudioDeviceID device, double sampleRate, int isInput)
-{
- PaError result = paNoError;
-
- double actualSampleRate;
- UInt32 propSize = sizeof(double);
- result = conv_err(AudioDeviceSetProperty(device, NULL, 0, isInput, kAudioDevicePropertyNominalSampleRate, propSize, &sampleRate));
-
- result = conv_err(AudioDeviceGetProperty(device, 0, isInput, kAudioDevicePropertyNominalSampleRate, &propSize, &actualSampleRate));
-
- if (result == paNoError && actualSampleRate != sampleRate) {
- result = paInvalidSampleRate;
- }
-
- return result;
-}
-
-static PaError SetFramesPerBuffer(AudioDeviceID device, unsigned long framesPerBuffer, int isInput)
-{
- PaError result = paNoError;
- UInt32 preferredFramesPerBuffer = framesPerBuffer;
- // while (preferredFramesPerBuffer > UINT32_MAX) {
- // preferredFramesPerBuffer /= 2;
- // }
-
- UInt32 actualFramesPerBuffer;
- UInt32 propSize = sizeof(UInt32);
- result = conv_err(AudioDeviceSetProperty(device, NULL, 0, isInput, kAudioDevicePropertyBufferFrameSize, propSize, &preferredFramesPerBuffer));
-
- result = conv_err(AudioDeviceGetProperty(device, 0, isInput, kAudioDevicePropertyBufferFrameSize, &propSize, &actualFramesPerBuffer));
-
- if (result != paNoError) {
- // do nothing
- }
- else if (actualFramesPerBuffer > framesPerBuffer) {
- result = paBufferTooSmall;
- }
- else if (actualFramesPerBuffer < framesPerBuffer) {
- result = paBufferTooBig;
- }
-
- return result;
-}
-
-static PaError SetUpUnidirectionalStream(AudioDeviceID device, double sampleRate, unsigned long framesPerBuffer, int isInput)
-{
- PaError err = paNoError;
- err = SetSampleRate(device, sampleRate, isInput);
- if( err == paNoError )
- err = SetFramesPerBuffer(device, framesPerBuffer, isInput);
- return err;
-}
-
-// ===== PortAudio functions =====
-#pragma mark PortAudio functions
-
-#ifdef __cplusplus
-extern "C"
-{
-#endif // __cplusplus
-
- PaError PaMacCore_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index );
-
-#ifdef __cplusplus
-}
-#endif // __cplusplus
-
-static void Terminate( struct PaUtilHostApiRepresentation *hostApi )
-{
- PaMacCoreHostApiRepresentation *macCoreHostApi = (PaMacCoreHostApiRepresentation*)hostApi;
-
- CleanUp(macCoreHostApi);
-}
-
-static PaError IsFormatSupported( struct PaUtilHostApiRepresentation *hostApi,
- const PaStreamParameters *inputParameters,
- const PaStreamParameters *outputParameters,
- double sampleRate )
-{
- PaMacCoreHostApiRepresentation *macCoreHostApi = (PaMacCoreHostApiRepresentation*)hostApi;
- PaDeviceInfo *deviceInfo;
-
- PaError result = paNoError;
- if (inputParameters) {
- deviceInfo = macCoreHostApi->inheritedHostApiRep.deviceInfos[inputParameters->device];
- if (inputParameters->channelCount > deviceInfo->maxInputChannels)
- result = paInvalidChannelCount;
- else if (CheckFormat(macCoreHostApi->macCoreDeviceIds[inputParameters->device], inputParameters, sampleRate, 1) != kAudioHardwareNoError) {
- result = paInvalidSampleRate;
- }
- }
- if (outputParameters && result == paNoError) {
- deviceInfo = macCoreHostApi->inheritedHostApiRep.deviceInfos[outputParameters->device];
- if (outputParameters->channelCount > deviceInfo->maxOutputChannels)
- result = paInvalidChannelCount;
- else if (CheckFormat(macCoreHostApi->macCoreDeviceIds[outputParameters->device], outputParameters, sampleRate, 0) != kAudioHardwareNoError) {
- result = paInvalidSampleRate;
- }
- }
-
- return result;
-}
-
-static PaError OpenStream( struct PaUtilHostApiRepresentation *hostApi,
- PaStream** s,
- const PaStreamParameters *inputParameters,
- const PaStreamParameters *outputParameters,
- double sampleRate,
- unsigned long framesPerBuffer,
- PaStreamFlags streamFlags,
- PaStreamCallback *streamCallback,
- void *userData )
-{
- PaError err = paNoError;
- PaMacCoreHostApiRepresentation *macCoreHostApi = (PaMacCoreHostApiRepresentation *)hostApi;
- PaMacCoreStream *stream = PaUtil_AllocateMemory(sizeof(PaMacCoreStream));
- stream->isActive = 0;
- stream->isStopped = 1;
- stream->inputDevice = kAudioDeviceUnknown;
- stream->outputDevice = kAudioDeviceUnknown;
-
- PaUtil_InitializeStreamRepresentation( &stream->streamRepresentation,
- ( (streamCallback)
- ? &macCoreHostApi->callbackStreamInterface
- : &macCoreHostApi->blockingStreamInterface ),
- streamCallback, userData );
- PaUtil_InitializeCpuLoadMeasurer( &stream->cpuLoadMeasurer, sampleRate );
-
- *s = (PaStream*)stream;
- PaMacClientData *clientData = PaUtil_AllocateMemory(sizeof(PaMacClientData));
- clientData->stream = stream;
- clientData->callback = streamCallback;
- clientData->userData = userData;
- clientData->inputBuffer = 0;
- clientData->outputBuffer = 0;
- clientData->ditherGenerator = PaUtil_AllocateMemory(sizeof(PaUtilTriangularDitherGenerator));
- PaUtil_InitializeTriangularDitherState(clientData->ditherGenerator);
-
- if (inputParameters != NULL) {
- stream->inputDevice = macCoreHostApi->macCoreDeviceIds[inputParameters->device];
- clientData->inputConverter = PaUtil_SelectConverter(paFloat32, inputParameters->sampleFormat, streamFlags);
- clientData->inputBuffer = PaUtil_AllocateMemory(Pa_GetSampleSize(inputParameters->sampleFormat) * framesPerBuffer * inputParameters->channelCount);
- clientData->inputChannelCount = inputParameters->channelCount;
- clientData->inputSampleFormat = inputParameters->sampleFormat;
- err = SetUpUnidirectionalStream(stream->inputDevice, sampleRate, framesPerBuffer, 1);
- }
-
- if (err == paNoError && outputParameters != NULL) {
- stream->outputDevice = macCoreHostApi->macCoreDeviceIds[outputParameters->device];
- clientData->outputConverter = PaUtil_SelectConverter(outputParameters->sampleFormat, paFloat32, streamFlags);
- clientData->outputBuffer = PaUtil_AllocateMemory(Pa_GetSampleSize(outputParameters->sampleFormat) * framesPerBuffer * outputParameters->channelCount);
- clientData->outputChannelCount = outputParameters->channelCount;
- clientData->outputSampleFormat = outputParameters->sampleFormat;
- err = SetUpUnidirectionalStream(stream->outputDevice, sampleRate, framesPerBuffer, 0);
- }
-
- if (inputParameters == NULL || outputParameters == NULL || stream->inputDevice == stream->outputDevice) {
- AudioDeviceID device = (inputParameters == NULL) ? stream->outputDevice : stream->inputDevice;
-
- AudioDeviceAddIOProc(device, AudioIOProc, clientData);
- }
- else {
- // using different devices for input and output
- AudioDeviceAddIOProc(stream->inputDevice, AudioInputProc, clientData);
- AudioDeviceAddIOProc(stream->outputDevice, AudioOutputProc, clientData);
- }
-
- return err;
-}
-
-// Note: When CloseStream() is called, the multi-api layer ensures that the stream has already been stopped or aborted.
-static PaError CloseStream( PaStream* s )
-{
- PaError err = paNoError;
- PaMacCoreStream *stream = (PaMacCoreStream*)s;
-
- PaUtil_ResetCpuLoadMeasurer( &stream->cpuLoadMeasurer );
-
- if (stream->inputDevice != kAudioDeviceUnknown) {
- if (stream->outputDevice == kAudioDeviceUnknown || stream->outputDevice == stream->inputDevice) {
- err = conv_err(AudioDeviceRemoveIOProc(stream->inputDevice, AudioIOProc));
- }
- else {
- err = conv_err(AudioDeviceRemoveIOProc(stream->inputDevice, AudioInputProc));
- err = conv_err(AudioDeviceRemoveIOProc(stream->outputDevice, AudioOutputProc));
- }
- }
- else {
- err = conv_err(AudioDeviceRemoveIOProc(stream->outputDevice, AudioIOProc));
- }
-
- return err;
-}
-
-
-static PaError StartStream( PaStream *s )
-{
- PaError err = paNoError;
- PaMacCoreStream *stream = (PaMacCoreStream*)s;
-
- if (stream->inputDevice != kAudioDeviceUnknown) {
- if (stream->outputDevice == kAudioDeviceUnknown || stream->outputDevice == stream->inputDevice) {
- err = conv_err(AudioDeviceStart(stream->inputDevice, AudioIOProc));
- }
- else {
- err = conv_err(AudioDeviceStart(stream->inputDevice, AudioInputProc));
- err = conv_err(AudioDeviceStart(stream->outputDevice, AudioOutputProc));
- }
- }
- else {
- err = conv_err(AudioDeviceStart(stream->outputDevice, AudioIOProc));
- }
-
- stream->isActive = 1;
- stream->isStopped = 0;
- return err;
-}
-
-static PaError AbortStream( PaStream *s )
-{
- PaError err = paNoError;
- PaMacCoreStream *stream = (PaMacCoreStream*)s;
-
- if (stream->inputDevice != kAudioDeviceUnknown) {
- if (stream->outputDevice == kAudioDeviceUnknown || stream->outputDevice == stream->inputDevice) {
- err = conv_err(AudioDeviceStop(stream->inputDevice, AudioIOProc));
- }
- else {
- err = conv_err(AudioDeviceStop(stream->inputDevice, AudioInputProc));
- err = conv_err(AudioDeviceStop(stream->outputDevice, AudioOutputProc));
- }
- }
- else {
- err = conv_err(AudioDeviceStop(stream->outputDevice, AudioIOProc));
- }
-
- stream->isActive = 0;
- stream->isStopped = 1;
- return err;
-}
-
-static PaError StopStream( PaStream *s )
-{
- // TODO: this should be nicer than abort
- return AbortStream(s);
-}
-
-static PaError IsStreamStopped( PaStream *s )
-{
- PaMacCoreStream *stream = (PaMacCoreStream*)s;
-
- return stream->isStopped;
-}
-
-
-static PaError IsStreamActive( PaStream *s )
-{
- PaMacCoreStream *stream = (PaMacCoreStream*)s;
-
- return stream->isActive;
-}
-
-
-static PaTime GetStreamTime( PaStream *s )
-{
- OSStatus err;
- PaTime result;
- PaMacCoreStream *stream = (PaMacCoreStream*)s;
-
- AudioTimeStamp *timeStamp = PaUtil_AllocateMemory(sizeof(AudioTimeStamp));
- if (stream->inputDevice != kAudioDeviceUnknown) {
- err = AudioDeviceGetCurrentTime(stream->inputDevice, timeStamp);
- }
- else {
- err = AudioDeviceGetCurrentTime(stream->outputDevice, timeStamp);
- }
-
- result = err ? 0 : timeStamp->mSampleTime;
- PaUtil_FreeMemory(timeStamp);
-
- return result;
-}
-
-
-static double GetStreamCpuLoad( PaStream* s )
-{
- PaMacCoreStream *stream = (PaMacCoreStream*)s;
-
- return PaUtil_GetCpuLoad( &stream->cpuLoadMeasurer );
-}
-
-
-// As separate stream interfaces are used for blocking and callback streams, the following functions can be guaranteed to only be called for blocking streams.
-
-static PaError ReadStream( PaStream* s,
- void *buffer,
- unsigned long frames )
-{
- return paInternalError;
-}
-
-
-static PaError WriteStream( PaStream* s,
- const void *buffer,
- unsigned long frames )
-{
- return paInternalError;
-}
-
-
-static signed long GetStreamReadAvailable( PaStream* s )
-{
- return paInternalError;
-}
-
-
-static signed long GetStreamWriteAvailable( PaStream* s )
-{
- return paInternalError;
-}
-
-// HostAPI-specific initialization function
-PaError PaMacCore_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiIndex hostApiIndex )
-{
- PaError result = paNoError;
- PaMacCoreHostApiRepresentation *macCoreHostApi = (PaMacCoreHostApiRepresentation *)PaUtil_AllocateMemory( sizeof(PaMacCoreHostApiRepresentation) );
- if( !macCoreHostApi )
- {
- result = paInsufficientMemory;
- goto error;
- }
-
- macCoreHostApi->allocations = PaUtil_CreateAllocationGroup();
- if( !macCoreHostApi->allocations )
- {
- result = paInsufficientMemory;
- goto error;
- }
-
- *hostApi = &macCoreHostApi->inheritedHostApiRep;
- (*hostApi)->info.structVersion = 1;
- (*hostApi)->info.type = paCoreAudio;
- (*hostApi)->info.name = "CoreAudio";
-
- result = InitializeDeviceInfos(macCoreHostApi, hostApiIndex);
- if (result != paNoError) {
- goto error;
- }
-
- // Set up the proper callbacks to this HostApi's functions
- (*hostApi)->Terminate = Terminate;
- (*hostApi)->OpenStream = OpenStream;
- (*hostApi)->IsFormatSupported = IsFormatSupported;
-
- PaUtil_InitializeStreamInterface( &macCoreHostApi->callbackStreamInterface, CloseStream, StartStream,
- StopStream, AbortStream, IsStreamStopped, IsStreamActive,
- GetStreamTime, GetStreamCpuLoad,
- PaUtil_DummyRead, PaUtil_DummyWrite,
- PaUtil_DummyGetReadAvailable, PaUtil_DummyGetWriteAvailable );
-
- PaUtil_InitializeStreamInterface( &macCoreHostApi->blockingStreamInterface, CloseStream, StartStream,
- StopStream, AbortStream, IsStreamStopped, IsStreamActive,
- GetStreamTime, PaUtil_DummyGetCpuLoad,
- ReadStream, WriteStream, GetStreamReadAvailable, GetStreamWriteAvailable );
-
- return result;
-
-error:
- if( macCoreHostApi ) {
- CleanUp(macCoreHostApi);
- }
-
- return result;
-}
projects / portaudio / commitdiff