From 6fc8cd3b29507b502b61a8a281c2bc5e042cad32 Mon Sep 17 00:00:00 2001 From: Chris Robinson Date: Thu, 22 Oct 2015 10:46:36 -0700 Subject: Convert the PortAudio backend to the new backend API --- Alc/backends/portaudio.c | 409 +++++++++++++++++++++++++++++------------------ 1 file changed, 257 insertions(+), 152 deletions(-) (limited to 'Alc/backends/portaudio.c') diff --git a/Alc/backends/portaudio.c b/Alc/backends/portaudio.c index c54a2ab7..f45833c6 100644 --- a/Alc/backends/portaudio.c +++ b/Alc/backends/portaudio.c @@ -28,6 +28,8 @@ #include "alu.h" #include "compat.h" +#include "backends/base.h" + #include @@ -122,149 +124,171 @@ static ALCboolean pa_load(void) } -typedef struct { +typedef struct ALCportPlayback { + DERIVE_FROM_TYPE(ALCbackend); + PaStream *stream; PaStreamParameters params; ALuint update_size; +} ALCportPlayback; + +static int ALCportPlayback_WriteCallback(const void *inputBuffer, void *outputBuffer, + unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo *timeInfo, + const PaStreamCallbackFlags statusFlags, void *userData); + +static void ALCportPlayback_Construct(ALCportPlayback *self, ALCdevice *device); +static void ALCportPlayback_Destruct(ALCportPlayback *self); +static ALCenum ALCportPlayback_open(ALCportPlayback *self, const ALCchar *name); +static void ALCportPlayback_close(ALCportPlayback *self); +static ALCboolean ALCportPlayback_reset(ALCportPlayback *self); +static ALCboolean ALCportPlayback_start(ALCportPlayback *self); +static void ALCportPlayback_stop(ALCportPlayback *self); +static DECLARE_FORWARD2(ALCportPlayback, ALCbackend, ALCenum, captureSamples, ALCvoid*, ALCuint) +static DECLARE_FORWARD(ALCportPlayback, ALCbackend, ALCuint, availableSamples) +static DECLARE_FORWARD(ALCportPlayback, ALCbackend, ALint64, getLatency) +static DECLARE_FORWARD(ALCportPlayback, ALCbackend, void, lock) +static DECLARE_FORWARD(ALCportPlayback, ALCbackend, void, unlock) +DECLARE_DEFAULT_ALLOCATORS(ALCportPlayback) + +DEFINE_ALCBACKEND_VTABLE(ALCportPlayback); + + +static void ALCportPlayback_Construct(ALCportPlayback *self, ALCdevice *device) +{ + ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device); + SET_VTABLE2(ALCportPlayback, ALCbackend, self); - RingBuffer *ring; -} pa_data; - + self->stream = NULL; +} -static int pa_callback(const void *UNUSED(inputBuffer), void *outputBuffer, - unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo *UNUSED(timeInfo), - const PaStreamCallbackFlags UNUSED(statusFlags), void *userData) +static void ALCportPlayback_Destruct(ALCportPlayback *self) { - ALCdevice *device = (ALCdevice*)userData; + if(self->stream) + Pa_CloseStream(self->stream); + self->stream = NULL; - aluMixData(device, outputBuffer, framesPerBuffer); - return 0; + ALCbackend_Destruct(STATIC_CAST(ALCbackend, self)); } -static int pa_capture_cb(const void *inputBuffer, void *UNUSED(outputBuffer), - unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo *UNUSED(timeInfo), - const PaStreamCallbackFlags UNUSED(statusFlags), void *userData) + +static int ALCportPlayback_WriteCallback(const void *UNUSED(inputBuffer), void *outputBuffer, + unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo *UNUSED(timeInfo), + const PaStreamCallbackFlags UNUSED(statusFlags), void *userData) { - ALCdevice *device = (ALCdevice*)userData; - pa_data *data = (pa_data*)device->ExtraData; + ALCportPlayback *self = userData; - WriteRingBuffer(data->ring, inputBuffer, framesPerBuffer); + aluMixData(STATIC_CAST(ALCbackend, self)->mDevice, outputBuffer, framesPerBuffer); return 0; } -static ALCenum pa_open_playback(ALCdevice *device, const ALCchar *deviceName) +static ALCenum ALCportPlayback_open(ALCportPlayback *self, const ALCchar *name) { - pa_data *data; + ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice; PaError err; - if(!deviceName) - deviceName = pa_device; - else if(strcmp(deviceName, pa_device) != 0) + if(!name) + name = pa_device; + else if(strcmp(name, pa_device) != 0) return ALC_INVALID_VALUE; - data = (pa_data*)calloc(1, sizeof(pa_data)); - data->update_size = device->UpdateSize; + self->update_size = device->UpdateSize; - data->params.device = -1; - if(!ConfigValueInt(NULL, "port", "device", &data->params.device) || - data->params.device < 0) - data->params.device = Pa_GetDefaultOutputDevice(); - data->params.suggestedLatency = (device->UpdateSize*device->NumUpdates) / + self->params.device = -1; + if(!ConfigValueInt(NULL, "port", "device", &self->params.device) || + self->params.device < 0) + self->params.device = Pa_GetDefaultOutputDevice(); + self->params.suggestedLatency = (device->UpdateSize*device->NumUpdates) / (float)device->Frequency; - data->params.hostApiSpecificStreamInfo = NULL; + self->params.hostApiSpecificStreamInfo = NULL; - data->params.channelCount = ((device->FmtChans == DevFmtMono) ? 1 : 2); + self->params.channelCount = ((device->FmtChans == DevFmtMono) ? 1 : 2); switch(device->FmtType) { case DevFmtByte: - data->params.sampleFormat = paInt8; + self->params.sampleFormat = paInt8; break; case DevFmtUByte: - data->params.sampleFormat = paUInt8; + self->params.sampleFormat = paUInt8; break; case DevFmtUShort: /* fall-through */ case DevFmtShort: - data->params.sampleFormat = paInt16; + self->params.sampleFormat = paInt16; break; case DevFmtUInt: /* fall-through */ case DevFmtInt: - data->params.sampleFormat = paInt32; + self->params.sampleFormat = paInt32; break; case DevFmtFloat: - data->params.sampleFormat = paFloat32; + self->params.sampleFormat = paFloat32; break; } retry_open: - err = Pa_OpenStream(&data->stream, NULL, &data->params, device->Frequency, - device->UpdateSize, paNoFlag, pa_callback, device); + err = Pa_OpenStream(&self->stream, NULL, &self->params, + device->Frequency, device->UpdateSize, paNoFlag, + ALCportPlayback_WriteCallback, self + ); if(err != paNoError) { - if(data->params.sampleFormat == paFloat32) + if(self->params.sampleFormat == paFloat32) { - data->params.sampleFormat = paInt16; + self->params.sampleFormat = paInt16; goto retry_open; } ERR("Pa_OpenStream() returned an error: %s\n", Pa_GetErrorText(err)); - free(data); return ALC_INVALID_VALUE; } - device->ExtraData = data; - al_string_copy_cstr(&device->DeviceName, deviceName); + al_string_copy_cstr(&device->DeviceName, name); return ALC_NO_ERROR; + } -static void pa_close_playback(ALCdevice *device) +static void ALCportPlayback_close(ALCportPlayback *self) { - pa_data *data = (pa_data*)device->ExtraData; - PaError err; - - err = Pa_CloseStream(data->stream); + PaError err = Pa_CloseStream(self->stream); if(err != paNoError) ERR("Error closing stream: %s\n", Pa_GetErrorText(err)); - - free(data); - device->ExtraData = NULL; + self->stream = NULL; } -static ALCboolean pa_reset_playback(ALCdevice *device) +static ALCboolean ALCportPlayback_reset(ALCportPlayback *self) { - pa_data *data = (pa_data*)device->ExtraData; + ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice; const PaStreamInfo *streamInfo; - streamInfo = Pa_GetStreamInfo(data->stream); + streamInfo = Pa_GetStreamInfo(self->stream); device->Frequency = streamInfo->sampleRate; - device->UpdateSize = data->update_size; + device->UpdateSize = self->update_size; - if(data->params.sampleFormat == paInt8) + if(self->params.sampleFormat == paInt8) device->FmtType = DevFmtByte; - else if(data->params.sampleFormat == paUInt8) + else if(self->params.sampleFormat == paUInt8) device->FmtType = DevFmtUByte; - else if(data->params.sampleFormat == paInt16) + else if(self->params.sampleFormat == paInt16) device->FmtType = DevFmtShort; - else if(data->params.sampleFormat == paInt32) + else if(self->params.sampleFormat == paInt32) device->FmtType = DevFmtInt; - else if(data->params.sampleFormat == paFloat32) + else if(self->params.sampleFormat == paFloat32) device->FmtType = DevFmtFloat; else { - ERR("Unexpected sample format: 0x%lx\n", data->params.sampleFormat); + ERR("Unexpected sample format: 0x%lx\n", self->params.sampleFormat); return ALC_FALSE; } - if(data->params.channelCount == 2) + if(self->params.channelCount == 2) device->FmtChans = DevFmtStereo; - else if(data->params.channelCount == 1) + else if(self->params.channelCount == 1) device->FmtChans = DevFmtMono; else { - ERR("Unexpected channel count: %u\n", data->params.channelCount); + ERR("Unexpected channel count: %u\n", self->params.channelCount); return ALC_FALSE; } SetDefaultChannelOrder(device); @@ -272,12 +296,11 @@ static ALCboolean pa_reset_playback(ALCdevice *device) return ALC_TRUE; } -static ALCboolean pa_start_playback(ALCdevice *device) +static ALCboolean ALCportPlayback_start(ALCportPlayback *self) { - pa_data *data = (pa_data*)device->ExtraData; PaError err; - err = Pa_StartStream(data->stream); + err = Pa_StartStream(self->stream); if(err != paNoError) { ERR("Pa_StartStream() returned an error: %s\n", Pa_GetErrorText(err)); @@ -287,160 +310,209 @@ static ALCboolean pa_start_playback(ALCdevice *device) return ALC_TRUE; } -static void pa_stop_playback(ALCdevice *device) +static void ALCportPlayback_stop(ALCportPlayback *self) { - pa_data *data = (pa_data*)device->ExtraData; - PaError err; - - err = Pa_StopStream(data->stream); + PaError err = Pa_StopStream(self->stream); if(err != paNoError) ERR("Error stopping stream: %s\n", Pa_GetErrorText(err)); } -static ALCenum pa_open_capture(ALCdevice *device, const ALCchar *deviceName) +typedef struct ALCportCapture { + DERIVE_FROM_TYPE(ALCbackend); + + PaStream *stream; + PaStreamParameters params; + + ll_ringbuffer_t *ring; +} ALCportCapture; + +static int ALCportCapture_ReadCallback(const void *inputBuffer, void *outputBuffer, + unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo *timeInfo, + const PaStreamCallbackFlags statusFlags, void *userData); + +static void ALCportCapture_Construct(ALCportCapture *self, ALCdevice *device); +static void ALCportCapture_Destruct(ALCportCapture *self); +static ALCenum ALCportCapture_open(ALCportCapture *self, const ALCchar *name); +static void ALCportCapture_close(ALCportCapture *self); +static DECLARE_FORWARD(ALCportCapture, ALCbackend, ALCboolean, reset) +static ALCboolean ALCportCapture_start(ALCportCapture *self); +static void ALCportCapture_stop(ALCportCapture *self); +static ALCenum ALCportCapture_captureSamples(ALCportCapture *self, ALCvoid *buffer, ALCuint samples); +static ALCuint ALCportCapture_availableSamples(ALCportCapture *self); +static DECLARE_FORWARD(ALCportCapture, ALCbackend, ALint64, getLatency) +static DECLARE_FORWARD(ALCportCapture, ALCbackend, void, lock) +static DECLARE_FORWARD(ALCportCapture, ALCbackend, void, unlock) +DECLARE_DEFAULT_ALLOCATORS(ALCportCapture) + +DEFINE_ALCBACKEND_VTABLE(ALCportCapture); + + +static void ALCportCapture_Construct(ALCportCapture *self, ALCdevice *device) +{ + ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device); + SET_VTABLE2(ALCportCapture, ALCbackend, self); + + self->stream = NULL; +} + +static void ALCportCapture_Destruct(ALCportCapture *self) +{ + if(self->stream) + Pa_CloseStream(self->stream); + self->stream = NULL; + + if(self->ring) + ll_ringbuffer_free(self->ring); + self->ring = NULL; + + ALCbackend_Destruct(STATIC_CAST(ALCbackend, self)); +} + + +static int ALCportCapture_ReadCallback(const void *inputBuffer, void *UNUSED(outputBuffer), + unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo *UNUSED(timeInfo), + const PaStreamCallbackFlags UNUSED(statusFlags), void *userData) +{ + ALCportCapture *self = userData; + size_t writable = ll_ringbuffer_write_space(self->ring); + + if(framesPerBuffer > writable) + framesPerBuffer = writable; + ll_ringbuffer_write(self->ring, inputBuffer, framesPerBuffer); + return 0; +} + + +static ALCenum ALCportCapture_open(ALCportCapture *self, const ALCchar *name) { - ALuint frame_size; - pa_data *data; + ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice; + ALuint samples, frame_size; PaError err; - if(!deviceName) - deviceName = pa_device; - else if(strcmp(deviceName, pa_device) != 0) + if(!name) + name = pa_device; + else if(strcmp(name, pa_device) != 0) return ALC_INVALID_VALUE; - data = (pa_data*)calloc(1, sizeof(pa_data)); - if(data == NULL) - return ALC_OUT_OF_MEMORY; - + samples = device->UpdateSize * device->NumUpdates; + samples = maxu(samples, 100 * device->Frequency / 1000); frame_size = FrameSizeFromDevFmt(device->FmtChans, device->FmtType); - data->ring = CreateRingBuffer(frame_size, device->UpdateSize*device->NumUpdates); - if(data->ring == NULL) - goto error; - data->params.device = -1; - if(!ConfigValueInt(NULL, "port", "capture", &data->params.device) || - data->params.device < 0) - data->params.device = Pa_GetDefaultInputDevice(); - data->params.suggestedLatency = 0.0f; - data->params.hostApiSpecificStreamInfo = NULL; + self->ring = ll_ringbuffer_create(samples, frame_size); + if(self->ring == NULL) return ALC_INVALID_VALUE; + + self->params.device = -1; + if(!ConfigValueInt(NULL, "port", "capture", &self->params.device) || + self->params.device < 0) + self->params.device = Pa_GetDefaultInputDevice(); + self->params.suggestedLatency = 0.0f; + self->params.hostApiSpecificStreamInfo = NULL; switch(device->FmtType) { case DevFmtByte: - data->params.sampleFormat = paInt8; + self->params.sampleFormat = paInt8; break; case DevFmtUByte: - data->params.sampleFormat = paUInt8; + self->params.sampleFormat = paUInt8; break; case DevFmtShort: - data->params.sampleFormat = paInt16; + self->params.sampleFormat = paInt16; break; case DevFmtInt: - data->params.sampleFormat = paInt32; + self->params.sampleFormat = paInt32; break; case DevFmtFloat: - data->params.sampleFormat = paFloat32; + self->params.sampleFormat = paFloat32; break; case DevFmtUInt: case DevFmtUShort: ERR("%s samples not supported\n", DevFmtTypeString(device->FmtType)); - goto error; + return ALC_INVALID_VALUE; } - data->params.channelCount = ChannelsFromDevFmt(device->FmtChans); + self->params.channelCount = ChannelsFromDevFmt(device->FmtChans); - err = Pa_OpenStream(&data->stream, &data->params, NULL, device->Frequency, - paFramesPerBufferUnspecified, paNoFlag, pa_capture_cb, device); + err = Pa_OpenStream(&self->stream, &self->params, NULL, + device->Frequency, paFramesPerBufferUnspecified, paNoFlag, + ALCportCapture_ReadCallback, self + ); if(err != paNoError) { ERR("Pa_OpenStream() returned an error: %s\n", Pa_GetErrorText(err)); - goto error; + return ALC_INVALID_VALUE; } - al_string_copy_cstr(&device->DeviceName, deviceName); + al_string_copy_cstr(&device->DeviceName, name); - device->ExtraData = data; return ALC_NO_ERROR; - -error: - DestroyRingBuffer(data->ring); - free(data); - return ALC_INVALID_VALUE; } -static void pa_close_capture(ALCdevice *device) +static void ALCportCapture_close(ALCportCapture *self) { - pa_data *data = (pa_data*)device->ExtraData; - PaError err; - - err = Pa_CloseStream(data->stream); + PaError err = Pa_CloseStream(self->stream); if(err != paNoError) ERR("Error closing stream: %s\n", Pa_GetErrorText(err)); + self->stream = NULL; - DestroyRingBuffer(data->ring); - data->ring = NULL; - - free(data); - device->ExtraData = NULL; + ll_ringbuffer_free(self->ring); + self->ring = NULL; } -static void pa_start_capture(ALCdevice *device) -{ - pa_data *data = device->ExtraData; - PaError err; - err = Pa_StartStream(data->stream); +static ALCboolean ALCportCapture_start(ALCportCapture *self) +{ + PaError err = Pa_StartStream(self->stream); if(err != paNoError) + { ERR("Error starting stream: %s\n", Pa_GetErrorText(err)); + return ALC_FALSE; + } + return ALC_TRUE; } -static void pa_stop_capture(ALCdevice *device) +static void ALCportCapture_stop(ALCportCapture *self) { - pa_data *data = (pa_data*)device->ExtraData; - PaError err; - - err = Pa_StopStream(data->stream); + PaError err = Pa_StopStream(self->stream); if(err != paNoError) ERR("Error stopping stream: %s\n", Pa_GetErrorText(err)); } -static ALCenum pa_capture_samples(ALCdevice *device, ALCvoid *buffer, ALCuint samples) + +static ALCuint ALCportCapture_availableSamples(ALCportCapture *self) { - pa_data *data = device->ExtraData; - ReadRingBuffer(data->ring, buffer, samples); - return ALC_NO_ERROR; + return ll_ringbuffer_read_space(self->ring); } -static ALCuint pa_available_samples(ALCdevice *device) +static ALCenum ALCportCapture_captureSamples(ALCportCapture *self, ALCvoid *buffer, ALCuint samples) { - pa_data *data = device->ExtraData; - return RingBufferSize(data->ring); + ll_ringbuffer_read(self->ring, buffer, samples); + return ALC_NO_ERROR; } -static const BackendFuncs pa_funcs = { - pa_open_playback, - pa_close_playback, - pa_reset_playback, - pa_start_playback, - pa_stop_playback, - pa_open_capture, - pa_close_capture, - pa_start_capture, - pa_stop_capture, - pa_capture_samples, - pa_available_samples -}; - -ALCboolean alc_pa_init(BackendFuncs *func_list) +typedef struct ALCportBackendFactory { + DERIVE_FROM_TYPE(ALCbackendFactory); +} ALCportBackendFactory; +#define ALCPORTBACKENDFACTORY_INITIALIZER { { GET_VTABLE2(ALCportBackendFactory, ALCbackendFactory) } } + +static ALCboolean ALCportBackendFactory_init(ALCportBackendFactory *self); +static void ALCportBackendFactory_deinit(ALCportBackendFactory *self); +static ALCboolean ALCportBackendFactory_querySupport(ALCportBackendFactory *self, ALCbackend_Type type); +static void ALCportBackendFactory_probe(ALCportBackendFactory *self, enum DevProbe type); +static ALCbackend* ALCportBackendFactory_createBackend(ALCportBackendFactory *self, ALCdevice *device, ALCbackend_Type type); + +DEFINE_ALCBACKENDFACTORY_VTABLE(ALCportBackendFactory); + + +static ALCboolean ALCportBackendFactory_init(ALCportBackendFactory* UNUSED(self)) { if(!pa_load()) return ALC_FALSE; - *func_list = pa_funcs; return ALC_TRUE; } -void alc_pa_deinit(void) +static void ALCportBackendFactory_deinit(ALCportBackendFactory* UNUSED(self)) { #ifdef HAVE_DYNLOAD if(pa_handle) @@ -454,7 +526,14 @@ void alc_pa_deinit(void) #endif } -void alc_pa_probe(enum DevProbe type) +static ALCboolean ALCportBackendFactory_querySupport(ALCportBackendFactory* UNUSED(self), ALCbackend_Type type) +{ + if(type == ALCbackend_Playback || type == ALCbackend_Capture) + return ALC_TRUE; + return ALC_FALSE; +} + +static void ALCportBackendFactory_probe(ALCportBackendFactory* UNUSED(self), enum DevProbe type) { switch(type) { @@ -466,3 +545,29 @@ void alc_pa_probe(enum DevProbe type) break; } } + +static ALCbackend* ALCportBackendFactory_createBackend(ALCportBackendFactory* UNUSED(self), ALCdevice *device, ALCbackend_Type type) +{ + if(type == ALCbackend_Playback) + { + ALCportPlayback *backend; + NEW_OBJ(backend, ALCportPlayback)(device); + if(!backend) return NULL; + return STATIC_CAST(ALCbackend, backend); + } + if(type == ALCbackend_Capture) + { + ALCportCapture *backend; + NEW_OBJ(backend, ALCportCapture)(device); + if(!backend) return NULL; + return STATIC_CAST(ALCbackend, backend); + } + + return NULL; +} + +ALCbackendFactory *ALCportBackendFactory_getFactory(void) +{ + static ALCportBackendFactory factory = ALCPORTBACKENDFACTORY_INITIALIZER; + return STATIC_CAST(ALCbackendFactory, &factory); +} -- cgit v1.2.3