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Convert the CoreAudio backend to C++

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This commit is contained in:
Chris Robinson
2018-11-13 02:09:21 -08:00
parent 0ff349a714
commit 2445bfd578
2 changed files with 51 additions and 47 deletions
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Alc/backends/coreaudio.c → Alc/backends/coreaudio.cpp
+50 -46
View File
@@ -38,14 +38,12 @@
static const ALCchar ca_device[] = "CoreAudio Default";
typedef struct ALCcoreAudioPlayback {
DERIVE_FROM_TYPE(ALCbackend);
struct ALCcoreAudioPlayback final : public ALCbackend {
AudioUnit audioUnit;
ALuint frameSize;
AudioStreamBasicDescription format; // This is the OpenAL format as a CoreAudio ASBD
} ALCcoreAudioPlayback;
};
static void ALCcoreAudioPlayback_Construct(ALCcoreAudioPlayback *self, ALCdevice *device);
static void ALCcoreAudioPlayback_Destruct(ALCcoreAudioPlayback *self);
@@ -65,6 +63,7 @@ DEFINE_ALCBACKEND_VTABLE(ALCcoreAudioPlayback);
static void ALCcoreAudioPlayback_Construct(ALCcoreAudioPlayback *self, ALCdevice *device)
{
new (self) ALCcoreAudioPlayback{};
ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
SET_VTABLE2(ALCcoreAudioPlayback, ALCbackend, self);
@@ -78,6 +77,7 @@ static void ALCcoreAudioPlayback_Destruct(ALCcoreAudioPlayback *self)
AudioComponentInstanceDispose(self->audioUnit);
ALCbackend_Destruct(STATIC_CAST(ALCbackend, self));
self->~ALCcoreAudioPlayback();
}
@@ -85,7 +85,7 @@ static OSStatus ALCcoreAudioPlayback_MixerProc(void *inRefCon,
AudioUnitRenderActionFlags* UNUSED(ioActionFlags), const AudioTimeStamp* UNUSED(inTimeStamp),
UInt32 UNUSED(inBusNumber), UInt32 UNUSED(inNumberFrames), AudioBufferList *ioData)
{
ALCcoreAudioPlayback *self = inRefCon;
ALCcoreAudioPlayback *self = static_cast<ALCcoreAudioPlayback*>(inRefCon);
ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
ALCcoreAudioPlayback_lock(self);
@@ -313,11 +313,7 @@ static void ALCcoreAudioPlayback_stop(ALCcoreAudioPlayback *self)
}
typedef struct ALCcoreAudioCapture {
DERIVE_FROM_TYPE(ALCbackend);
struct ALCcoreAudioCapture final : public ALCbackend {
AudioUnit audioUnit;
ALuint frameSize;
@@ -329,7 +325,7 @@ typedef struct ALCcoreAudioCapture {
ALCvoid *resampleBuffer; // Buffer for returned RingBuffer data when resampling
ll_ringbuffer_t *ring;
} ALCcoreAudioCapture;
};
static void ALCcoreAudioCapture_Construct(ALCcoreAudioCapture *self, ALCdevice *device);
static void ALCcoreAudioCapture_Destruct(ALCcoreAudioCapture *self);
@@ -351,7 +347,8 @@ static AudioBufferList *allocate_buffer_list(UInt32 channelCount, UInt32 byteSiz
{
AudioBufferList *list;
list = calloc(1, FAM_SIZE(AudioBufferList, mBuffers, 1) + byteSize);
list = static_cast<AudioBufferList*>(calloc(1,
FAM_SIZE(AudioBufferList, mBuffers, 1) + byteSize));
if(list)
{
list->mNumberBuffers = 1;
@@ -371,6 +368,7 @@ static void destroy_buffer_list(AudioBufferList *list)
static void ALCcoreAudioCapture_Construct(ALCcoreAudioCapture *self, ALCdevice *device)
{
new (self) ALCcoreAudioCapture{};
ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
SET_VTABLE2(ALCcoreAudioCapture, ALCbackend, self);
@@ -401,6 +399,7 @@ static void ALCcoreAudioCapture_Destruct(ALCcoreAudioCapture *self)
self->audioUnit = 0;
ALCbackend_Destruct(STATIC_CAST(ALCbackend, self));
self->~ALCcoreAudioCapture();
}
@@ -409,7 +408,7 @@ static OSStatus ALCcoreAudioCapture_RecordProc(void *inRefCon,
const AudioTimeStamp *inTimeStamp, UInt32 UNUSED(inBusNumber),
UInt32 inNumberFrames, AudioBufferList* UNUSED(ioData))
{
ALCcoreAudioCapture *self = inRefCon;
ALCcoreAudioCapture *self = static_cast<ALCcoreAudioCapture*>(inRefCon);
AudioUnitRenderActionFlags flags = 0;
OSStatus err;
@@ -421,8 +420,8 @@ static OSStatus ALCcoreAudioCapture_RecordProc(void *inRefCon,
return err;
}
ll_ringbuffer_write(self->ring, self->bufferList->mBuffers[0].mData, inNumberFrames);
ll_ringbuffer_write(self->ring, static_cast<const char*>(self->bufferList->mBuffers[0].mData),
inNumberFrames);
return noErr;
}
@@ -431,10 +430,10 @@ static OSStatus ALCcoreAudioCapture_ConvertCallback(AudioConverterRef UNUSED(inA
AudioStreamPacketDescription** UNUSED(outDataPacketDescription),
void *inUserData)
{
ALCcoreAudioCapture *self = inUserData;
ALCcoreAudioCapture *self = reinterpret_cast<ALCcoreAudioCapture*>(inUserData);
// Read from the ring buffer and store temporarily in a large buffer
ll_ringbuffer_read(self->ring, self->resampleBuffer, *ioNumberDataPackets);
ll_ringbuffer_read(self->ring, static_cast<char*>(self->resampleBuffer), *ioNumberDataPackets);
// Set the input data
ioData->mNumberBuffers = 1;
@@ -511,32 +510,34 @@ static ALCenum ALCcoreAudioCapture_open(ALCcoreAudioCapture *self, const ALCchar
}
#if !TARGET_OS_IOS
// Get the default input device
AudioDeviceID inputDevice = kAudioDeviceUnknown;
propertySize = sizeof(AudioDeviceID);
propertyAddress.mSelector = kAudioHardwarePropertyDefaultInputDevice;
propertyAddress.mScope = kAudioObjectPropertyScopeGlobal;
propertyAddress.mElement = kAudioObjectPropertyElementMaster;
err = AudioObjectGetPropertyData(kAudioObjectSystemObject, &propertyAddress, 0, NULL, &propertySize, &inputDevice);
if(err != noErr)
{
ERR("AudioObjectGetPropertyData failed\n");
goto error;
}
if(inputDevice == kAudioDeviceUnknown)
{
ERR("No input device found\n");
goto error;
}
// Get the default input device
AudioDeviceID inputDevice = kAudioDeviceUnknown;
// Track the input device
err = AudioUnitSetProperty(self->audioUnit, kAudioOutputUnitProperty_CurrentDevice, kAudioUnitScope_Global, 0, &inputDevice, sizeof(AudioDeviceID));
if(err != noErr)
{
ERR("AudioUnitSetProperty failed\n");
goto error;
propertySize = sizeof(AudioDeviceID);
propertyAddress.mSelector = kAudioHardwarePropertyDefaultInputDevice;
propertyAddress.mScope = kAudioObjectPropertyScopeGlobal;
propertyAddress.mElement = kAudioObjectPropertyElementMaster;
err = AudioObjectGetPropertyData(kAudioObjectSystemObject, &propertyAddress, 0, NULL, &propertySize, &inputDevice);
if(err != noErr)
{
ERR("AudioObjectGetPropertyData failed\n");
goto error;
}
if(inputDevice == kAudioDeviceUnknown)
{
ERR("No input device found\n");
goto error;
}
// Track the input device
err = AudioUnitSetProperty(self->audioUnit, kAudioOutputUnitProperty_CurrentDevice, kAudioUnitScope_Global, 0, &inputDevice, sizeof(AudioDeviceID));
if(err != noErr)
{
ERR("AudioUnitSetProperty failed\n");
goto error;
}
}
#endif
@@ -750,10 +751,9 @@ static ALCuint ALCcoreAudioCapture_availableSamples(ALCcoreAudioCapture *self)
}
typedef struct ALCcoreAudioBackendFactory {
DERIVE_FROM_TYPE(ALCbackendFactory);
} ALCcoreAudioBackendFactory;
#define ALCCOREAUDIOBACKENDFACTORY_INITIALIZER { { GET_VTABLE2(ALCcoreAudioBackendFactory, ALCbackendFactory) } }
struct ALCcoreAudioBackendFactory final : public ALCbackendFactory {
ALCcoreAudioBackendFactory() noexcept;
};
ALCbackendFactory *ALCcoreAudioBackendFactory_getFactory(void);
@@ -765,9 +765,13 @@ static ALCbackend* ALCcoreAudioBackendFactory_createBackend(ALCcoreAudioBackendF
DEFINE_ALCBACKENDFACTORY_VTABLE(ALCcoreAudioBackendFactory);
ALCcoreAudioBackendFactory::ALCcoreAudioBackendFactory() noexcept
: ALCbackendFactory{GET_VTABLE2(ALCcoreAudioBackendFactory, ALCbackendFactory)}
{ }
ALCbackendFactory *ALCcoreAudioBackendFactory_getFactory(void)
{
static ALCcoreAudioBackendFactory factory = ALCCOREAUDIOBACKENDFACTORY_INITIALIZER;
static ALCcoreAudioBackendFactory factory{};
return STATIC_CAST(ALCbackendFactory, &factory);
}
CMakeLists.txt
+1 -1
View File
@@ -1242,7 +1242,7 @@ IF(COREAUDIO_FRAMEWORK)
OPTION(ALSOFT_BACKEND_COREAUDIO "Enable CoreAudio backend" ON)
IF(ALSOFT_BACKEND_COREAUDIO)
SET(HAVE_COREAUDIO 1)
SET(ALC_OBJS ${ALC_OBJS} Alc/backends/coreaudio.c)
SET(ALC_OBJS ${ALC_OBJS} Alc/backends/coreaudio.cpp)
SET(BACKENDS "${BACKENDS} CoreAudio,")
SET(EXTRA_LIBS ${COREAUDIO_FRAMEWORK} ${EXTRA_LIBS})
SET(EXTRA_LIBS /System/Library/Frameworks/AudioUnit.framework ${EXTRA_LIBS})