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WASAPI: all COM functions called in dedicated threads

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This commit is contained in:
Andrew Kelley 2015-08-24 23:53:32 -07:00
parent 2c9055d0d3
commit 65416669d3
2 changed files with 141 additions and 86 deletions
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211
src/wasapi.cpp
View file

@ -1299,8 +1299,8 @@ static void outstream_thread_run(void *arg) {
outstream_thread_deinit(si, os);
soundio_os_mutex_lock(osw->mutex);
osw->open_complete = true;
osw->open_err = err;
osw->open_complete = true;
soundio_os_cond_signal(osw->cond, osw->mutex);
soundio_os_mutex_unlock(osw->mutex);
return;
@ -1458,6 +1458,14 @@ static int outstream_clear_buffer_wasapi(struct SoundIoPrivate *si, struct Sound
return 0;
}
static void instream_thread_deinit(SoundIoPrivate *si, SoundIoInStreamPrivate *is) {
SoundIoInStreamWasapi *isw = &is->backend_data.wasapi;
if (isw->audio_capture_client)
IUnknown_Release(isw->audio_capture_client);
if (isw->audio_client)
IUnknown_Release(isw->audio_client);
}
static void instream_destroy_wasapi(struct SoundIoPrivate *si, struct SoundIoInStreamPrivate *is) {
@ -1465,31 +1473,25 @@ static void instream_destroy_wasapi(struct SoundIoPrivate *si, struct SoundIoInS
if (isw->thread) {
isw->thread_exit_flag.clear();
if (isw->is_raw) {
if (isw->h_event)
SetEvent(isw->h_event);
} else {
soundio_os_mutex_lock(isw->mutex);
soundio_os_cond_signal(isw->cond, isw->mutex);
soundio_os_cond_signal(isw->start_cond, isw->mutex);
soundio_os_mutex_unlock(isw->mutex);
}
soundio_os_thread_destroy(isw->thread);
}
if (isw->audio_capture_client)
IUnknown_Release(isw->audio_capture_client);
if (isw->audio_client)
IUnknown_Release(isw->audio_client);
if (isw->h_event)
CloseHandle(isw->h_event);
soundio_os_cond_destroy(isw->cond);
soundio_os_cond_destroy(isw->start_cond);
soundio_os_mutex_destroy(isw->mutex);
CoUninitialize();
}
static int instream_open_wasapi(struct SoundIoPrivate *si, struct SoundIoInStreamPrivate *is) {
static int instream_do_open(struct SoundIoPrivate *si, struct SoundIoInStreamPrivate *is) {
SoundIoInStreamWasapi *isw = &is->backend_data.wasapi;
SoundIoInStream *instream = &is->pub;
SoundIoDevice *device = instream->device;
@ -1497,30 +1499,9 @@ static int instream_open_wasapi(struct SoundIoPrivate *si, struct SoundIoInStrea
SoundIoDeviceWasapi *dw = &dev->backend_data.wasapi;
HRESULT hr;
if (FAILED(hr = CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED))) {
instream_destroy_wasapi(si, is);
if (hr == E_OUTOFMEMORY)
return SoundIoErrorNoMem;
else
return SoundIoErrorOpeningDevice;
}
isw->is_raw = device->is_raw;
if (!(isw->cond = soundio_os_cond_create())) {
instream_destroy_wasapi(si, is);
return SoundIoErrorNoMem;
}
if (!(isw->mutex = soundio_os_mutex_create())) {
instream_destroy_wasapi(si, is);
return SoundIoErrorNoMem;
}
if (FAILED(hr = IMMDevice_Activate(dw->mm_device, IID_IAudioClient,
CLSCTX_ALL, nullptr, (void**)&isw->audio_client)))
{
instream_destroy_wasapi(si, is);
return SoundIoErrorOpeningDevice;
}
@ -1540,14 +1521,12 @@ static int instream_open_wasapi(struct SoundIoPrivate *si, struct SoundIoInStrea
} else {
WAVEFORMATEXTENSIBLE *mix_format;
if (FAILED(hr = IAudioClient_GetMixFormat(isw->audio_client, (WAVEFORMATEX **)&mix_format))) {
instream_destroy_wasapi(si, is);
return SoundIoErrorOpeningDevice;
}
wave_format.Format.nSamplesPerSec = mix_format->Format.nSamplesPerSec;
CoTaskMemFree(mix_format);
mix_format = nullptr;
if (wave_format.Format.nSamplesPerSec != (DWORD)instream->sample_rate) {
instream_destroy_wasapi(si, is);
return SoundIoErrorIncompatibleDevice;
}
flags = 0;
@ -1564,7 +1543,6 @@ static int instream_open_wasapi(struct SoundIoPrivate *si, struct SoundIoInStrea
{
if (hr == AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED) {
if (FAILED(hr = IAudioClient_GetBufferSize(isw->audio_client, &isw->buffer_frame_count))) {
instream_destroy_wasapi(si, is);
return SoundIoErrorOpeningDevice;
}
IUnknown_Release(isw->audio_client);
@ -1572,13 +1550,11 @@ static int instream_open_wasapi(struct SoundIoPrivate *si, struct SoundIoInStrea
if (FAILED(hr = IMMDevice_Activate(dw->mm_device, IID_IAudioClient,
CLSCTX_ALL, nullptr, (void**)&isw->audio_client)))
{
instream_destroy_wasapi(si, is);
return SoundIoErrorOpeningDevice;
}
if (!isw->is_raw) {
WAVEFORMATEXTENSIBLE *mix_format;
if (FAILED(hr = IAudioClient_GetMixFormat(isw->audio_client, (WAVEFORMATEX **)&mix_format))) {
instream_destroy_wasapi(si, is);
return SoundIoErrorOpeningDevice;
}
wave_format.Format.nSamplesPerSec = mix_format->Format.nSamplesPerSec;
@ -1597,42 +1573,29 @@ static int instream_open_wasapi(struct SoundIoPrivate *si, struct SoundIoInStrea
buffer_duration, periodicity, (WAVEFORMATEX*)&wave_format, nullptr)))
{
if (hr == AUDCLNT_E_UNSUPPORTED_FORMAT) {
instream_destroy_wasapi(si, is);
return SoundIoErrorIncompatibleDevice;
} else if (hr == E_OUTOFMEMORY) {
instream_destroy_wasapi(si, is);
return SoundIoErrorNoMem;
} else {
instream_destroy_wasapi(si, is);
return SoundIoErrorOpeningDevice;
}
}
} else if (hr == AUDCLNT_E_UNSUPPORTED_FORMAT) {
instream_destroy_wasapi(si, is);
return SoundIoErrorIncompatibleDevice;
} else if (hr == E_OUTOFMEMORY) {
instream_destroy_wasapi(si, is);
return SoundIoErrorNoMem;
} else {
instream_destroy_wasapi(si, is);
return SoundIoErrorOpeningDevice;
}
}
if (FAILED(hr = IAudioClient_GetBufferSize(isw->audio_client, &isw->buffer_frame_count))) {
instream_destroy_wasapi(si, is);
return SoundIoErrorOpeningDevice;
}
if (isw->is_raw)
instream->software_latency = isw->buffer_frame_count / (double)instream->sample_rate;
if (isw->is_raw) {
isw->h_event = CreateEvent(nullptr, FALSE, FALSE, nullptr);
if (!isw->h_event) {
instream_destroy_wasapi(si, is);
return SoundIoErrorOpeningDevice;
}
if (FAILED(hr = IAudioClient_SetEventHandle(isw->audio_client, isw->h_event))) {
instream_destroy_wasapi(si, is);
return SoundIoErrorOpeningDevice;
}
}
@ -1641,19 +1604,16 @@ static int instream_open_wasapi(struct SoundIoPrivate *si, struct SoundIoInStrea
if (FAILED(hr = IAudioClient_GetService(isw->audio_client, IID_IAudioSessionControl,
(void **)&isw->audio_session_control)))
{
instream_destroy_wasapi(si, is);
return SoundIoErrorOpeningDevice;
}
int err;
if ((err = to_lpwstr(instream->name, strlen(instream->name), &isw->stream_name))) {
instream_destroy_wasapi(si, is);
return err;
}
if (FAILED(hr = IAudioSessionControl_SetDisplayName(isw->audio_session_control,
isw->stream_name, nullptr)))
{
instream_destroy_wasapi(si, is);
return SoundIoErrorOpeningDevice;
}
}
@ -1661,34 +1621,17 @@ static int instream_open_wasapi(struct SoundIoPrivate *si, struct SoundIoInStrea
if (FAILED(hr = IAudioClient_GetService(isw->audio_client, IID_IAudioCaptureClient,
(void **)&isw->audio_capture_client)))
{
instream_destroy_wasapi(si, is);
return SoundIoErrorOpeningDevice;
}
return 0;
}
static int instream_pause_wasapi(struct SoundIoPrivate *si, struct SoundIoInStreamPrivate *is, bool pause) {
SoundIoInStreamWasapi *isw = &is->backend_data.wasapi;
HRESULT hr;
if (pause && !isw->is_paused) {
if (FAILED(hr = IAudioClient_Stop(isw->audio_client)))
return SoundIoErrorStreaming;
isw->is_paused = true;
} else if (!pause && isw->is_paused) {
if (FAILED(hr = IAudioClient_Start(isw->audio_client)))
return SoundIoErrorStreaming;
isw->is_paused = false;
}
return 0;
}
static void instream_raw_run(void *arg) {
static void instream_raw_run(SoundIoInStreamPrivate *is) {
soundio_panic("TODO instream_raw_run");
}
static void instream_shared_run(void *arg) {
SoundIoInStreamPrivate *is = (SoundIoInStreamPrivate *) arg;
static void instream_shared_run(SoundIoInStreamPrivate *is) {
SoundIoInStreamWasapi *isw = &is->backend_data.wasapi;
SoundIoInStream *instream = &is->pub;
@ -1720,21 +1663,129 @@ static void instream_shared_run(void *arg) {
}
}
static int instream_start_wasapi(struct SoundIoPrivate *si, struct SoundIoInStreamPrivate *is) {
static void instream_thread_run(void *arg) {
SoundIoInStreamPrivate *is = (SoundIoInStreamPrivate *)arg;
SoundIoInStreamWasapi *isw = &is->backend_data.wasapi;
int err;
SoundIoInStream *instream = &is->pub;
SoundIoDevice *device = instream->device;
SoundIo *soundio = device->soundio;
SoundIoPrivate *si = (SoundIoPrivate *)soundio;
assert(!isw->thread);
isw->thread_exit_flag.test_and_set();
int err;
if ((err = instream_do_open(si, is))) {
instream_thread_deinit(si, is);
soundio_os_mutex_lock(isw->mutex);
isw->open_err = err;
isw->open_complete = true;
soundio_os_cond_signal(isw->cond, isw->mutex);
soundio_os_mutex_unlock(isw->mutex);
return;
}
soundio_os_mutex_lock(isw->mutex);
isw->open_complete = true;
soundio_os_cond_signal(isw->cond, isw->mutex);
for (;;) {
if (!isw->thread_exit_flag.test_and_set()) {
soundio_os_mutex_unlock(isw->mutex);
return;
}
if (isw->started) {
soundio_os_mutex_unlock(isw->mutex);
break;
}
soundio_os_cond_wait(isw->start_cond, isw->mutex);
}
if (isw->is_raw)
instream_raw_run(is);
else
instream_shared_run(is);
instream_thread_deinit(si, is);
}
static int instream_open_wasapi(struct SoundIoPrivate *si, struct SoundIoInStreamPrivate *is) {
SoundIoInStreamWasapi *isw = &is->backend_data.wasapi;
SoundIoInStream *instream = &is->pub;
SoundIoDevice *device = instream->device;
// All the COM functions are supposed to be called from the same thread. libsoundio API does not
// restrict the calling thread context in this way. Furthermore, the user might have called
// CoInitializeEx with a different threading model than Single Threaded Apartment.
// So we create a thread to do all the initialization and teardown, and communicate state
// via conditions and signals. The thread for initialization and teardown is also used
// for the realtime code calls the user write_callback.
isw->is_raw = device->is_raw;
if (!(isw->cond = soundio_os_cond_create())) {
instream_destroy_wasapi(si, is);
return SoundIoErrorNoMem;
}
if (!(isw->start_cond = soundio_os_cond_create())) {
instream_destroy_wasapi(si, is);
return SoundIoErrorNoMem;
}
if (!(isw->mutex = soundio_os_mutex_create())) {
instream_destroy_wasapi(si, is);
return SoundIoErrorNoMem;
}
if (isw->is_raw) {
if ((err = soundio_os_thread_create(instream_raw_run, is, true, &isw->thread)))
return err;
} else {
if ((err = soundio_os_thread_create(instream_shared_run, is, true, &isw->thread)))
isw->h_event = CreateEvent(nullptr, FALSE, FALSE, nullptr);
if (!isw->h_event) {
instream_destroy_wasapi(si, is);
return SoundIoErrorOpeningDevice;
}
}
isw->thread_exit_flag.test_and_set();
int err;
if ((err = soundio_os_thread_create(instream_thread_run, is, true, &isw->thread))) {
instream_destroy_wasapi(si, is);
return err;
}
soundio_os_mutex_lock(isw->mutex);
while (!isw->open_complete)
soundio_os_cond_wait(isw->cond, isw->mutex);
soundio_os_mutex_unlock(isw->mutex);
if (isw->open_err) {
instream_destroy_wasapi(si, is);
return isw->open_err;
}
return 0;
}
static int instream_pause_wasapi(struct SoundIoPrivate *si, struct SoundIoInStreamPrivate *is, bool pause) {
SoundIoInStreamWasapi *isw = &is->backend_data.wasapi;
HRESULT hr;
if (pause && !isw->is_paused) {
if (FAILED(hr = IAudioClient_Stop(isw->audio_client)))
return SoundIoErrorStreaming;
isw->is_paused = true;
} else if (!pause && isw->is_paused) {
if (FAILED(hr = IAudioClient_Start(isw->audio_client)))
return SoundIoErrorStreaming;
isw->is_paused = false;
}
return 0;
}
static int instream_start_wasapi(struct SoundIoPrivate *si, struct SoundIoInStreamPrivate *is) {
SoundIoInStreamWasapi *isw = &is->backend_data.wasapi;
soundio_os_mutex_lock(isw->mutex);
isw->started = true;
soundio_os_cond_signal(isw->start_cond, isw->mutex);
soundio_os_mutex_unlock(isw->mutex);
return 0;
}

4
src/wasapi.hpp
View file

@ -82,6 +82,7 @@ struct SoundIoInStreamWasapi {
SoundIoOsThread *thread;
SoundIoOsMutex *mutex;
SoundIoOsCond *cond;
SoundIoOsCond *start_cond;
atomic_flag thread_exit_flag;
bool is_raw;
int readable_frame_count;
@ -89,6 +90,9 @@ struct SoundIoInStreamWasapi {
int read_frame_count;
HANDLE h_event;
bool is_paused;
bool open_complete;
int open_err;
bool started;
char *read_buf;
int read_buf_frames_left;
SoundIoChannelArea areas[SOUNDIO_MAX_CHANNELS];