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RetroArch/audio/drivers/wasapi.c
krzys-h 0cff7eefa7 Initialize COM only once, globally
2019-01-10 16:48:02 +01:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2011-2017 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#ifdef _WIN32_WINNT
#undef _WIN32_WINNT
#endif
#define _WIN32_WINNT 0x0600
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <winerror.h>
#include <propidl.h>
#include <initguid.h>
#include <mmdeviceapi.h>
#include <mmreg.h>
#include <audioclient.h>
#ifdef _MSC_VER
DEFINE_GUID(IID_IAudioClient, 0x1CB9AD4C, 0xDBFA, 0x4C32, 0xB1, 0x78, 0xC2, 0xF5, 0x68, 0xA7, 0x03, 0xB2);
DEFINE_GUID(IID_IAudioRenderClient, 0xF294ACFC, 0x3146, 0x4483, 0xA7, 0xBF, 0xAD, 0xDC, 0xA7, 0xC2, 0x60, 0xE2);
DEFINE_GUID(IID_IMMDeviceEnumerator, 0xA95664D2, 0x9614, 0x4F35, 0xA7, 0x46, 0xDE, 0x8D, 0xB6, 0x36, 0x17, 0xE6);
DEFINE_GUID(CLSID_MMDeviceEnumerator, 0xBCDE0395, 0xE52F, 0x467C, 0x8E, 0x3D, 0xC4, 0x57, 0x92, 0x91, 0x69, 0x2E);
#undef KSDATAFORMAT_SUBTYPE_IEEE_FLOAT
DEFINE_GUID(KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, 0x00000003, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xAA, 0x00, 0x38, 0x9B, 0x71);
#endif
#include <lists/string_list.h>
#include <queues/fifo_queue.h>
#include "../audio_driver.h"
#include "../../verbosity.h"
#include "../../configuration.h"
DEFINE_PROPERTYKEY(PKEY_Device_FriendlyName, 0xa45c254e, 0xdf1c, 0x4efd, 0x80, 0x20, 0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, 14); /* DEVPROP_TYPE_STRING */
#ifdef __cplusplus
#define _IMMDeviceCollection_Item(This,nDevice,ppdevice) (This)->Item(nDevice,ppdevice)
#define _IAudioClient_Start(This) ( (This)->Start() )
#define _IAudioClient_Stop(This) ( (This)->Stop() )
#define _IAudioClient_GetCurrentPadding(This,pNumPaddingFrames) \
( (This)->GetCurrentPadding(pNumPaddingFrames) )
#define _IAudioRenderClient_GetBuffer(This,NumFramesRequested,ppData) \
( (This)->GetBuffer(NumFramesRequested,ppData) )
#define _IAudioRenderClient_ReleaseBuffer(This,NumFramesWritten,dwFlags) \
( (This)->ReleaseBuffer(NumFramesWritten,dwFlags) )
#define _IAudioClient_GetService(This,riid,ppv) ( (This)->GetService(riid,ppv) )
#define _IAudioClient_SetEventHandle(This,eventHandle) ( (This)->SetEventHandle(eventHandle) )
#define _IAudioClient_GetBufferSize(This,pNumBufferFrames) ( (This)->GetBufferSize(pNumBufferFrames) )
#define _IAudioClient_GetStreamLatency(This,phnsLatency) ( (This)->GetStreamLatency(phnsLatency) )
#define _IAudioClient_GetDevicePeriod(This,phnsDefaultDevicePeriod,phnsMinimumDevicePeriod) ( (This)->GetDevicePeriod(phnsDefaultDevicePeriod,phnsMinimumDevicePeriod) )
#define _IMMDevice_Activate(This,iid,dwClsCtx,pActivationParams,ppv) ((This)->Activate(iid,(dwClsCtx),pActivationParams,ppv))
#define _IMMDeviceEnumerator_EnumAudioEndpoints(This,dataFlow,dwStateMask,ppDevices) (This)->EnumAudioEndpoints(dataFlow,dwStateMask,ppDevices)
#define _IMMDeviceEnumerator_GetDefaultAudioEndpoint(This,dataFlow,role,ppEndpoint) (This)->GetDefaultAudioEndpoint(dataFlow,role,ppEndpoint)
#define _IMMDevice_OpenPropertyStore(This,stgmAccess,ppProperties) (This)->OpenPropertyStore(stgmAccess,ppProperties)
#define _IMMDevice_GetId(This,ppstrId) ((This)->GetId(ppstrId))
#define _IPropertyStore_GetValue(This,key,pv) ( (This)->GetValue(key,pv) )
#define _IMMDeviceCollection_GetCount(This,cProps) ( (This)->GetCount(cProps) )
#else
#define _IMMDeviceCollection_Item(This,nDevice,ppdevice) (This)->lpVtbl->Item(This,nDevice,ppdevice)
#define _IAudioClient_Start(This) ( (This)->lpVtbl -> Start(This) )
#define _IAudioClient_Stop(This) ( (This)->lpVtbl -> Stop(This) )
#define _IAudioClient_GetCurrentPadding(This,pNumPaddingFrames) \
( (This)->lpVtbl -> GetCurrentPadding(This,pNumPaddingFrames) )
#define _IAudioRenderClient_GetBuffer(This,NumFramesRequested,ppData) \
( (This)->lpVtbl -> GetBuffer(This,NumFramesRequested,ppData) )
#define _IAudioRenderClient_ReleaseBuffer(This,NumFramesWritten,dwFlags) \
( (This)->lpVtbl -> ReleaseBuffer(This,NumFramesWritten,dwFlags) )
#define _IAudioClient_GetService(This,riid,ppv) ( (This)->lpVtbl -> GetService(This,&(riid),ppv) )
#define _IAudioClient_SetEventHandle(This,eventHandle) ( (This)->lpVtbl -> SetEventHandle(This,eventHandle) )
#define _IAudioClient_GetBufferSize(This,pNumBufferFrames) ( (This)->lpVtbl -> GetBufferSize(This,pNumBufferFrames) )
#define _IAudioClient_GetStreamLatency(This,phnsLatency) ( (This)->lpVtbl -> GetStreamLatency(This,phnsLatency) )
#define _IAudioClient_GetDevicePeriod(This,phnsDefaultDevicePeriod,phnsMinimumDevicePeriod) ( (This)->lpVtbl -> GetDevicePeriod(This,phnsDefaultDevicePeriod,phnsMinimumDevicePeriod) )
#define _IMMDevice_Activate(This,iid,dwClsCtx,pActivationParams,ppv) ((This)->lpVtbl->Activate(This,&(iid),dwClsCtx,pActivationParams,ppv))
#define _IMMDeviceEnumerator_EnumAudioEndpoints(This,dataFlow,dwStateMask,ppDevices) (This)->lpVtbl->EnumAudioEndpoints(This,dataFlow,dwStateMask,ppDevices)
#define _IMMDeviceEnumerator_GetDefaultAudioEndpoint(This,dataFlow,role,ppEndpoint) (This)->lpVtbl->GetDefaultAudioEndpoint(This,dataFlow,role,ppEndpoint)
#define _IMMDevice_OpenPropertyStore(This,stgmAccess,ppProperties) (This)->lpVtbl->OpenPropertyStore(This,stgmAccess,ppProperties)
#define _IMMDevice_GetId(This,ppstrId) (This)->lpVtbl->GetId(This,ppstrId)
#define _IPropertyStore_GetValue(This,key,pv) ( (This)->lpVtbl -> GetValue(This,&(key),pv) )
#define _IMMDeviceCollection_GetCount(This,cProps) ( (This)->lpVtbl -> GetCount(This,cProps) )
#endif
#define WASAPI_WARN(bool_exp, err_str, warn_exp) \
if (!(bool_exp)) { \
RARCH_WARN("[WASAPI]: %s.\n", err_str); \
warn_exp; }
#define WASAPI_CHECK(bool_exp, err_str, err_exp) \
if (!(bool_exp)) { \
RARCH_ERR("[WASAPI]: %s.\n", err_str); \
err_exp; }
#define WASAPI_HR_CHECK(hr, fun_str, err_exp) \
if (FAILED(hr)) { \
RARCH_ERR("[WASAPI]: %s failed with error 0x%.8X.\n", fun_str, hr); \
err_exp; }
#define WASAPI_HR_WARN(hr, fun_str, warn_exp) \
if (FAILED(hr)) { \
RARCH_WARN("[WASAPI]: %s failed with error 0x%.8X.\n", fun_str, hr); \
warn_exp; }
#define WASAPI_SR_CHECK(bool_exp, fun_str, err_exp) \
if (!(bool_exp)) { \
RARCH_ERR("[WASAPI]: %s failed with error %d.\n", fun_str, GetLastError()); \
err_exp; }
#ifdef __cplusplus
#define WASAPI_RELEASE(iface) \
if(iface) \
{ \
iface->Release(); \
iface = NULL; \
}
#else
#define WASAPI_RELEASE(iface) \
if(iface) \
{ \
iface->lpVtbl->Release(iface);\
iface = NULL; \
}
#endif
#define WASAPI_FREE(ptr)\
if(ptr) {\
free(ptr);\
ptr = NULL; }\
#define WASAPI_CO_FREE(ptr)\
if(ptr) {\
CoTaskMemFree(ptr);\
ptr = NULL; }\
typedef struct
{
bool exclusive;
bool blocking;
bool running;
size_t frame_size; /* 4 or 8 only */
size_t engine_buffer_size;
HANDLE write_event;
IMMDevice *device;
IAudioClient *client;
IAudioRenderClient *renderer;
fifo_buffer_t *buffer; /* NULL in unbuffered shared mode */
} wasapi_t;
static bool wasapi_check_device_id(IMMDevice *device, const char *id)
{
HRESULT hr;
bool result = false;
LPWSTR dev_id = NULL, dev_cmp_id = NULL;
int id_length = MultiByteToWideChar(CP_ACP, 0, id, -1, NULL, 0);
WASAPI_SR_CHECK(id_length > 0, "MultiByteToWideChar", goto error);
dev_cmp_id = (LPWSTR)malloc(id_length * sizeof(WCHAR));
WASAPI_CHECK(dev_cmp_id, "Out of memory", goto error);
id_length = MultiByteToWideChar(CP_ACP, 0, id, -1, dev_cmp_id, id_length);
WASAPI_SR_CHECK(id_length > 0, "MultiByteToWideChar", goto error);
hr = _IMMDevice_GetId(device, &dev_id);
WASAPI_HR_CHECK(hr, "IMMDevice::GetId", goto error);
result = lstrcmpW(dev_cmp_id, dev_id) == 0 ? true : false;
WASAPI_CO_FREE(dev_id);
WASAPI_FREE(dev_cmp_id);
return result;
error:
WASAPI_CO_FREE(dev_id);
WASAPI_FREE(dev_cmp_id);
return false;
}
static IMMDevice *wasapi_init_device(const char *id)
{
HRESULT hr;
UINT32 dev_count, i;
IMMDeviceEnumerator *enumerator = NULL;
IMMDevice *device = NULL;
IMMDeviceCollection *collection = NULL;
if (id)
{
RARCH_LOG("[WASAPI]: Initializing device %s ...\n", id);
}
else
{
RARCH_LOG("[WASAPI]: Initializing default device.. \n");
}
#ifdef __cplusplus
hr = CoCreateInstance(CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL,
IID_IMMDeviceEnumerator, (void **)&enumerator);
#else
hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL,
&IID_IMMDeviceEnumerator, (void **)&enumerator);
#endif
WASAPI_HR_CHECK(hr, "CoCreateInstance", goto error);
if (id)
{
hr = _IMMDeviceEnumerator_EnumAudioEndpoints(enumerator,
eRender, DEVICE_STATE_ACTIVE, &collection);
WASAPI_HR_CHECK(hr, "IMMDeviceEnumerator::EnumAudioEndpoints",
goto error);
hr = _IMMDeviceCollection_GetCount(collection, &dev_count);
WASAPI_HR_CHECK(hr, "IMMDeviceCollection::GetCount", goto error);
for (i = 0; i < dev_count; ++i)
{
hr = _IMMDeviceCollection_Item(collection, i, &device);
WASAPI_HR_CHECK(hr, "IMMDeviceCollection::Item", continue);
if (wasapi_check_device_id(device, id))
break;
WASAPI_RELEASE(device);
}
}
else
{
hr = _IMMDeviceEnumerator_GetDefaultAudioEndpoint(
enumerator, eRender, eConsole, &device);
WASAPI_HR_CHECK(hr, "IMMDeviceEnumerator::GetDefaultAudioEndpoint",
goto error);
}
if (!device)
goto error;
WASAPI_RELEASE(collection);
WASAPI_RELEASE(enumerator);
return device;
error:
WASAPI_RELEASE(collection);
WASAPI_RELEASE(enumerator);
if (id)
{
RARCH_WARN("[WASAPI]: Failed to initialize device.\n");
}
else
{
RARCH_ERR("[WASAPI]: Failed to initialize device.\n");
}
return NULL;
}
static unsigned wasapi_pref_rate(unsigned i)
{
const unsigned r[] = { 48000, 44100, 96000, 192000 };
if (i >= sizeof(r) / sizeof(unsigned))
return 0;
return r[i];
}
static void wasapi_set_format(WAVEFORMATEXTENSIBLE *wf,
bool float_fmt, unsigned rate)
{
wf->Format.nChannels = 2;
wf->Format.nSamplesPerSec = rate;
if (float_fmt)
{
wf->Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
wf->Format.nAvgBytesPerSec = rate * 8;
wf->Format.nBlockAlign = 8;
wf->Format.wBitsPerSample = 32;
wf->Format.cbSize = sizeof(WORD) + sizeof(DWORD) + sizeof(GUID);
wf->Samples.wValidBitsPerSample = 32;
wf->dwChannelMask = KSAUDIO_SPEAKER_STEREO;
wf->SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
}
else
{
wf->Format.wFormatTag = WAVE_FORMAT_PCM;
wf->Format.nAvgBytesPerSec = rate * 4;
wf->Format.nBlockAlign = 4;
wf->Format.wBitsPerSample = 16;
wf->Format.cbSize = 0;
}
}
static IAudioClient *wasapi_init_client_sh(IMMDevice *device,
bool *float_fmt, unsigned *rate, unsigned latency)
{
WAVEFORMATEXTENSIBLE wf;
int i, j;
IAudioClient *client = NULL;
bool float_fmt_res = *float_fmt;
unsigned rate_res = *rate;
HRESULT hr = _IMMDevice_Activate(device,
IID_IAudioClient,
CLSCTX_ALL, NULL, (void**)&client);
WASAPI_HR_CHECK(hr, "IMMDevice::Activate", return NULL);
/* once for float, once for pcm (requested first) */
for (i = 0; i < 2; ++i)
{
rate_res = *rate;
if (i == 1)
float_fmt_res = !float_fmt_res;
/* for requested rate (first) and all preferred rates */
for (j = 0; rate_res; ++j)
{
RARCH_LOG("[WASAPI]: Initializing client (shared, %s, %uHz, %ums) ...\n",
float_fmt_res ? "float" : "pcm", rate_res, latency);
wasapi_set_format(&wf, float_fmt_res, rate_res);
#ifdef __cplusplus
hr = client->Initialize(AUDCLNT_SHAREMODE_SHARED,
AUDCLNT_STREAMFLAGS_EVENTCALLBACK | AUDCLNT_STREAMFLAGS_NOPERSIST,
0, 0, (WAVEFORMATEX*)&wf, NULL);
#else
hr = client->lpVtbl->Initialize(client, AUDCLNT_SHAREMODE_SHARED,
AUDCLNT_STREAMFLAGS_EVENTCALLBACK | AUDCLNT_STREAMFLAGS_NOPERSIST,
0, 0, (WAVEFORMATEX*)&wf, NULL);
#endif
if (hr == AUDCLNT_E_ALREADY_INITIALIZED)
{
HRESULT hr;
WASAPI_RELEASE(client);
hr = _IMMDevice_Activate(device,
IID_IAudioClient,
CLSCTX_ALL, NULL, (void**)&client);
WASAPI_HR_CHECK(hr, "IMMDevice::Activate", return NULL);
#ifdef __cplusplus
hr = client->Initialize(AUDCLNT_SHAREMODE_SHARED,
AUDCLNT_STREAMFLAGS_EVENTCALLBACK | AUDCLNT_STREAMFLAGS_NOPERSIST,
0, 0, (WAVEFORMATEX*)&wf, NULL);
#else
hr = client->lpVtbl->Initialize(client, AUDCLNT_SHAREMODE_SHARED,
AUDCLNT_STREAMFLAGS_EVENTCALLBACK | AUDCLNT_STREAMFLAGS_NOPERSIST,
0, 0, (WAVEFORMATEX*)&wf, NULL);
#endif
}
if (hr != AUDCLNT_E_UNSUPPORTED_FORMAT)
{
i = 2; /* break from outer loop too */
break;
}
RARCH_WARN("[WASAPI]: Unsupported format.\n");
rate_res = wasapi_pref_rate(j);
if (rate_res == *rate) /* requested rate is allready tested */
rate_res = wasapi_pref_rate(++j); /* skip it */
}
}
WASAPI_HR_CHECK(hr, "IAudioClient::Initialize", goto error);
*float_fmt = float_fmt_res;
*rate = rate_res;
return client;
error:
WASAPI_RELEASE(client);
return NULL;
}
static IAudioClient *wasapi_init_client_ex(IMMDevice *device,
bool *float_fmt, unsigned *rate, unsigned latency)
{
WAVEFORMATEXTENSIBLE wf;
int i, j;
IAudioClient *client = NULL;
bool float_fmt_res = *float_fmt;
unsigned rate_res = *rate;
REFERENCE_TIME minimum_period = 0;
REFERENCE_TIME buffer_duration = 0;
UINT32 buffer_length = 0;
HRESULT hr = _IMMDevice_Activate(device,
IID_IAudioClient,
CLSCTX_ALL, NULL, (void**)&client);
WASAPI_HR_CHECK(hr, "IMMDevice::Activate", return NULL);
hr = _IAudioClient_GetDevicePeriod(client, NULL, &minimum_period);
WASAPI_HR_CHECK(hr, "IAudioClient::GetDevicePeriod", goto error);
/* buffer_duration is in 100ns units */
buffer_duration = latency * 10000.0;
if (buffer_duration < minimum_period)
buffer_duration = minimum_period;
/* once for float, once for pcm (requested first) */
for (i = 0; i < 2; ++i)
{
rate_res = *rate;
if (i == 1)
float_fmt_res = !float_fmt_res;
/* for requested rate (first) and all preferred rates */
for (j = 0; rate_res; ++j)
{
RARCH_LOG("[WASAPI]: Initializing client (exclusive, %s, %uHz, %ums) ...\n",
float_fmt_res ? "float" : "pcm", rate_res, latency);
wasapi_set_format(&wf, float_fmt_res, rate_res);
#ifdef __cplusplus
hr = client->Initialize(AUDCLNT_SHAREMODE_EXCLUSIVE,
AUDCLNT_STREAMFLAGS_EVENTCALLBACK | AUDCLNT_STREAMFLAGS_NOPERSIST,
buffer_duration, buffer_duration, (WAVEFORMATEX*)&wf, NULL);
#else
hr = client->lpVtbl->Initialize(client, AUDCLNT_SHAREMODE_EXCLUSIVE,
AUDCLNT_STREAMFLAGS_EVENTCALLBACK | AUDCLNT_STREAMFLAGS_NOPERSIST,
buffer_duration, buffer_duration, (WAVEFORMATEX*)&wf, NULL);
#endif
if (hr == AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED)
{
hr = _IAudioClient_GetBufferSize(client, &buffer_length);
WASAPI_HR_CHECK(hr, "IAudioClient::GetBufferSize", goto error);
WASAPI_RELEASE(client);
hr = _IMMDevice_Activate(device,
IID_IAudioClient,
CLSCTX_ALL, NULL, (void**)&client);
WASAPI_HR_CHECK(hr, "IMMDevice::Activate", return NULL);
buffer_duration = 10000.0 * 1000.0 / rate_res * buffer_length + 0.5;
#ifdef __cplusplus
hr = client->Initialize(AUDCLNT_SHAREMODE_EXCLUSIVE,
AUDCLNT_STREAMFLAGS_EVENTCALLBACK | AUDCLNT_STREAMFLAGS_NOPERSIST,
buffer_duration, buffer_duration, (WAVEFORMATEX*)&wf, NULL);
#else
hr = client->lpVtbl->Initialize(client, AUDCLNT_SHAREMODE_EXCLUSIVE,
AUDCLNT_STREAMFLAGS_EVENTCALLBACK | AUDCLNT_STREAMFLAGS_NOPERSIST,
buffer_duration, buffer_duration, (WAVEFORMATEX*)&wf, NULL);
#endif
}
if (hr == AUDCLNT_E_ALREADY_INITIALIZED)
{
WASAPI_RELEASE(client);
hr = _IMMDevice_Activate(device,
IID_IAudioClient,
CLSCTX_ALL, NULL, (void**)&client);
WASAPI_HR_CHECK(hr, "IMMDevice::Activate", return NULL);
#ifdef __cplusplus
hr = client->Initialize(AUDCLNT_SHAREMODE_EXCLUSIVE,
AUDCLNT_STREAMFLAGS_EVENTCALLBACK | AUDCLNT_STREAMFLAGS_NOPERSIST,
buffer_duration, buffer_duration, (WAVEFORMATEX*)&wf, NULL);
#else
hr = client->lpVtbl->Initialize(client, AUDCLNT_SHAREMODE_EXCLUSIVE,
AUDCLNT_STREAMFLAGS_EVENTCALLBACK | AUDCLNT_STREAMFLAGS_NOPERSIST,
buffer_duration, buffer_duration, (WAVEFORMATEX*)&wf, NULL);
#endif
}
if (hr != AUDCLNT_E_UNSUPPORTED_FORMAT)
{
WASAPI_WARN(hr != AUDCLNT_E_DEVICE_IN_USE,
"Device already in use", goto error);
WASAPI_WARN(hr != AUDCLNT_E_EXCLUSIVE_MODE_NOT_ALLOWED,
"Exclusive mode disabled", goto error);
i = 2; /* break from outer loop too */
break;
}
RARCH_WARN("[WASAPI]: Unsupported format.\n");
rate_res = wasapi_pref_rate(j);
if (rate_res == *rate) /* requested rate is allready tested */
rate_res = wasapi_pref_rate(++j); /* skip it */
}
}
WASAPI_HR_CHECK(hr, "IAudioClient::Initialize", goto error);
*float_fmt = float_fmt_res;
*rate = rate_res;
return client;
error:
WASAPI_RELEASE(client);
return NULL;
}
static IAudioClient *wasapi_init_client(IMMDevice *device, bool *exclusive,
bool *float_fmt, unsigned *rate, unsigned latency)
{
HRESULT hr;
IAudioClient *client;
double latency_res;
REFERENCE_TIME device_period = 0;
REFERENCE_TIME stream_latency = 0;
UINT32 buffer_length = 0;
if (*exclusive)
{
client = wasapi_init_client_ex(device, float_fmt, rate, latency);
if (!client)
{
client = wasapi_init_client_sh(device, float_fmt, rate, latency);
if (client)
*exclusive = false;
}
}
else
{
client = wasapi_init_client_sh(device, float_fmt, rate, latency);
if (!client)
{
client = wasapi_init_client_ex(device, float_fmt, rate, latency);
if (client)
*exclusive = true;
}
}
WASAPI_CHECK(client, "Failed to initialize client", return NULL);
/* next calls are allowed to fail (we losing info only) */
if (*exclusive)
hr = _IAudioClient_GetDevicePeriod(client, NULL, &device_period);
else
hr = _IAudioClient_GetDevicePeriod(client, &device_period, NULL);
if (FAILED(hr))
{
RARCH_WARN("[WASAPI]: IAudioClient::GetDevicePeriod failed with error 0x%.8X.\n", hr);
}
if (!*exclusive)
{
hr = _IAudioClient_GetStreamLatency(client, &stream_latency);
if (FAILED(hr))
{
RARCH_WARN("[WASAPI]: IAudioClient::GetStreamLatency failed with error 0x%.8X.\n", hr);
}
}
hr = _IAudioClient_GetBufferSize(client, &buffer_length);
if (FAILED(hr))
{
RARCH_WARN("[WASAPI]: IAudioClient::GetBufferSize failed with error 0x%.8X.\n", hr);
}
if (*exclusive)
latency_res = (double)buffer_length * 1000.0 / (*rate);
else
latency_res = (double)(stream_latency + device_period) / 10000.0;
RARCH_LOG("[WASAPI]: Client initialized (%s, %s, %uHz, %.1fms).\n",
*exclusive ? "exclusive" : "shared",
*float_fmt ? "float" : "pcm", *rate, latency_res);
RARCH_LOG("[WASAPI]: Client's buffer length is %u frames (%.1fms).\n",
buffer_length, (double)buffer_length * 1000.0 / (*rate));
RARCH_LOG("[WASAPI]: Device period is %.1fms (%lld frames).\n",
(double)device_period / 10000.0, device_period * (*rate) / 10000000);
return client;
}
static void *wasapi_init(const char *dev_id, unsigned rate, unsigned latency,
unsigned u1, unsigned *u2)
{
HRESULT hr;
UINT32 frame_count = 0;
REFERENCE_TIME dev_period = 0;
BYTE *dest = NULL;
settings_t *settings = config_get_ptr();
bool float_format = settings->bools.audio_wasapi_float_format;
int sh_buffer_length = settings->ints.audio_wasapi_sh_buffer_length;
wasapi_t *w = (wasapi_t*)calloc(1, sizeof(wasapi_t));
w->exclusive = settings->bools.audio_wasapi_exclusive_mode;
WASAPI_CHECK(w, "Out of memory", return NULL);
w->device = wasapi_init_device(dev_id);
if (!w->device && dev_id)
w->device = wasapi_init_device(NULL);
if (!w->device)
goto error;
w->client = wasapi_init_client(w->device,
&w->exclusive, &float_format, &rate, latency);
if (!w->client)
goto error;
hr = _IAudioClient_GetBufferSize(w->client, &frame_count);
WASAPI_HR_CHECK(hr, "IAudioClient::GetBufferSize", goto error);
w->frame_size = float_format ? 8 : 4;
w->engine_buffer_size = frame_count * w->frame_size;
if (w->exclusive)
{
w->buffer = fifo_new(w->engine_buffer_size);
WASAPI_CHECK(w->buffer, "Out of memory", goto error);
RARCH_LOG("[WASAPI]: Intermediate buffer length is %u frames (%.1fms).\n",
frame_count, (double)frame_count * 1000.0 / rate);
}
else if (sh_buffer_length)
{
if (sh_buffer_length < 0)
{
hr = _IAudioClient_GetDevicePeriod(w->client, &dev_period, NULL);
WASAPI_HR_CHECK(hr, "IAudioClient::GetDevicePeriod", goto error);
sh_buffer_length = dev_period * rate / 10000000;
}
w->buffer = fifo_new(sh_buffer_length * w->frame_size);
WASAPI_CHECK(w->buffer, "Out of memory", goto error);
RARCH_LOG("[WASAPI]: Intermediate buffer length is %u frames (%.1fms).\n",
sh_buffer_length, (double)sh_buffer_length * 1000.0 / rate);
}
else
{
RARCH_LOG("[WASAPI]: Intermediate buffer is off. \n");
}
w->write_event = CreateEventA(NULL, FALSE, FALSE, NULL);
WASAPI_SR_CHECK(w->write_event, "CreateEventA", goto error);
hr = _IAudioClient_SetEventHandle(w->client, w->write_event);
WASAPI_HR_CHECK(hr, "IAudioClient::SetEventHandle", goto error);
hr = _IAudioClient_GetService(w->client,
IID_IAudioRenderClient, (void**)&w->renderer);
WASAPI_HR_CHECK(hr, "IAudioClient::GetService", goto error);
hr = _IAudioRenderClient_GetBuffer(w->renderer, frame_count, &dest);
WASAPI_HR_CHECK(hr, "IAudioRenderClient::GetBuffer", goto error);
hr = _IAudioRenderClient_ReleaseBuffer(
w->renderer, frame_count,
AUDCLNT_BUFFERFLAGS_SILENT);
WASAPI_HR_CHECK(hr, "IAudioRenderClient::ReleaseBuffer", goto error);
hr = _IAudioClient_Start(w->client);
WASAPI_HR_CHECK(hr, "IAudioClient::Start", goto error);
w->running = true;
w->blocking = settings->bools.audio_sync;
return w;
error:
WASAPI_RELEASE(w->renderer);
WASAPI_RELEASE(w->client);
WASAPI_RELEASE(w->device);
if (w->write_event)
CloseHandle(w->write_event);
if (w->buffer)
fifo_free(w->buffer);
free(w);
return NULL;
}
static bool wasapi_flush(wasapi_t * w, const void * data, size_t size)
{
BYTE *dest = NULL;
UINT32 frame_count = size / w->frame_size;
HRESULT hr = _IAudioRenderClient_GetBuffer(
w->renderer, frame_count, &dest);
WASAPI_HR_CHECK(hr, "IAudioRenderClient::GetBuffer", return false)
memcpy(dest, data, size);
hr = _IAudioRenderClient_ReleaseBuffer(
w->renderer, frame_count,
0);
WASAPI_HR_CHECK(hr, "IAudioRenderClient::ReleaseBuffer", return false);
return true;
}
static bool wasapi_flush_buffer(wasapi_t * w, size_t size)
{
BYTE *dest = NULL;
UINT32 frame_count = size / w->frame_size;
HRESULT hr = _IAudioRenderClient_GetBuffer(
w->renderer, frame_count, &dest);
WASAPI_HR_CHECK(hr, "IAudioRenderClient::GetBuffer", return false)
fifo_read(w->buffer, dest, size);
hr = _IAudioRenderClient_ReleaseBuffer(
w->renderer, frame_count,
0);
WASAPI_HR_CHECK(hr, "IAudioRenderClient::ReleaseBuffer", return false);
return true;
}
static ssize_t wasapi_write_sh(wasapi_t *w, const void * data, size_t size)
{
DWORD ir;
HRESULT hr;
size_t write_avail = 0;
ssize_t written = -1;
UINT32 padding = 0;
if (w->buffer)
{
write_avail = fifo_write_avail(w->buffer);
if (!write_avail)
{
size_t read_avail = 0;
if (w->blocking)
{
ir = WaitForSingleObject(w->write_event, INFINITE);
WASAPI_SR_CHECK(ir == WAIT_OBJECT_0, "WaitForSingleObject", return -1);
}
hr = _IAudioClient_GetCurrentPadding(w->client, &padding);
WASAPI_HR_CHECK(hr, "IAudioClient::GetCurrentPadding", return -1);
read_avail = fifo_read_avail(w->buffer);
write_avail = w->engine_buffer_size - padding * w->frame_size;
written = read_avail < write_avail ? read_avail : write_avail;
if (written)
{
if (!wasapi_flush_buffer(w, written))
return -1;
}
}
write_avail = fifo_write_avail(w->buffer);
written = size < write_avail ? size : write_avail;
if (written)
fifo_write(w->buffer, data, written);
}
else
{
if (w->blocking)
{
ir = WaitForSingleObject(w->write_event, INFINITE);
WASAPI_SR_CHECK(ir == WAIT_OBJECT_0, "WaitForSingleObject", return -1);
}
hr = _IAudioClient_GetCurrentPadding(w->client, &padding);
WASAPI_HR_CHECK(hr, "IAudioClient::GetCurrentPadding", return -1);
write_avail = w->engine_buffer_size - padding * w->frame_size;
if (!write_avail)
return 0;
written = size < write_avail ? size : write_avail;
if (written)
{
if (!wasapi_flush(w, data, written))
return -1;
}
}
return written;
}
static ssize_t wasapi_write_ex(wasapi_t *w, const void * data, size_t size)
{
ssize_t writen = 0;
size_t write_avail = fifo_write_avail(w->buffer);
if (!write_avail)
{
DWORD ir = WaitForSingleObject(
w->write_event, w->blocking ? INFINITE : 0);
if (ir != WAIT_OBJECT_0 && w->blocking)
{
RARCH_ERR("[WASAPI]: WaitForSingleObject failed with error %d.\n", GetLastError());
return -1;
}
if (ir != WAIT_OBJECT_0)
return 0;
if (!wasapi_flush_buffer(w, w->engine_buffer_size))
return -1;
write_avail = w->engine_buffer_size;
}
writen = size < write_avail ? size : write_avail;
fifo_write(w->buffer, data, writen);
return writen;
}
static ssize_t wasapi_write(void *wh, const void *data, size_t size)
{
size_t written;
wasapi_t *w = (wasapi_t*)wh;
if (w->blocking)
{
ssize_t ir;
for (written = 0, ir = -1; written < size; written += ir)
{
if (w->exclusive)
ir = wasapi_write_ex(w, (char*)data + written, size - written);
else
ir = wasapi_write_sh(w, (char*)data + written, size - written);
if (ir == -1)
return -1;
}
}
else if (w->exclusive)
written = wasapi_write_ex(w, data, size);
else
written = wasapi_write_sh(w, data, size);
return written;
}
static bool wasapi_stop(void *wh)
{
wasapi_t *w = (wasapi_t*)wh;
HRESULT hr = _IAudioClient_Stop(w->client);
WASAPI_HR_CHECK(hr, "IAudioClient::Stop", return !w->running);
w->running = false;
return true;
}
static bool wasapi_start(void *wh, bool u)
{
wasapi_t *w = (wasapi_t*)wh;
HRESULT hr = _IAudioClient_Start(w->client);
if (hr == AUDCLNT_E_NOT_STOPPED)
return true;
WASAPI_HR_CHECK(hr, "IAudioClient::Start", return w->running);
w->running = true;
return true;
}
static bool wasapi_alive(void *wh)
{
wasapi_t *w = (wasapi_t*)wh;
return w->running;
}
static void wasapi_set_nonblock_state(void *wh, bool nonblock)
{
wasapi_t *w = (wasapi_t*)wh;
RARCH_LOG("[WASAPI]: Sync %s.\n", nonblock ? "off" : "on");
w->blocking = !nonblock;
}
static void wasapi_free(void *wh)
{
DWORD ir;
wasapi_t *w = (wasapi_t*)wh;
HANDLE write_event = w->write_event;
WASAPI_RELEASE(w->renderer);
if (w->client)
_IAudioClient_Stop(w->client);
WASAPI_RELEASE(w->client);
WASAPI_RELEASE(w->device);
if (w->buffer)
fifo_free(w->buffer);
free(w);
ir = WaitForSingleObject(write_event, 20);
if (ir == WAIT_FAILED)
{
RARCH_ERR("[WASAPI]: WaitForSingleObject failed with error %d.\n", GetLastError());
}
/* If event isn't signaled log and leak */
WASAPI_CHECK(ir == WAIT_OBJECT_0, "Memory leak in wasapi_free", return);
CloseHandle(write_event);
}
static bool wasapi_use_float(void *wh)
{
wasapi_t *w = (wasapi_t*)wh;
return w->frame_size == 8;
}
static void *wasapi_device_list_new(void *u)
{
HRESULT hr;
UINT i;
PROPVARIANT prop_var;
int ir;
union string_list_elem_attr attr;
IMMDeviceEnumerator *enumerator = NULL;
IMMDeviceCollection *collection = NULL;
UINT dev_count = 0;
IMMDevice *device = NULL;
LPWSTR dev_id_wstr = NULL;
IPropertyStore *prop_store = NULL;
bool prop_var_init = false;
bool br = false;
char *dev_id_str = NULL;
char *dev_name_str = NULL;
struct string_list *sl = string_list_new();
WASAPI_CHECK(sl, "string_list_new failed", return NULL);
attr.i = 0;
#ifdef __cplusplus
hr = CoCreateInstance(CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL,
IID_IMMDeviceEnumerator, (void **)&enumerator);
#else
hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL,
&IID_IMMDeviceEnumerator, (void **)&enumerator);
#endif
WASAPI_HR_CHECK(hr, "CoCreateInstance", goto error);
hr = _IMMDeviceEnumerator_EnumAudioEndpoints(enumerator,
eRender, DEVICE_STATE_ACTIVE, &collection);
WASAPI_HR_CHECK(hr, "IMMDeviceEnumerator::EnumAudioEndpoints", goto error);
hr = _IMMDeviceCollection_GetCount(collection, &dev_count);
WASAPI_HR_CHECK(hr, "IMMDeviceCollection::GetCount", goto error);
for (i = 0; i < dev_count; ++i)
{
hr = _IMMDeviceCollection_Item(collection, i, &device);
WASAPI_HR_CHECK(hr, "IMMDeviceCollection::Item", goto error);
hr = _IMMDevice_GetId(device, &dev_id_wstr);
WASAPI_HR_CHECK(hr, "IMMDevice::GetId", goto error);
ir = WideCharToMultiByte(CP_ACP, 0, dev_id_wstr, -1,
NULL, 0, NULL, NULL);
WASAPI_SR_CHECK(ir, "WideCharToMultiByte", goto error);
dev_id_str = (char *)malloc(ir);
WASAPI_CHECK(dev_id_str, "Out of memory", goto error);
ir = WideCharToMultiByte(CP_ACP, 0, dev_id_wstr, -1,
dev_id_str, ir, NULL, NULL);
WASAPI_SR_CHECK(ir, "WideCharToMultiByte", goto error);
hr = _IMMDevice_OpenPropertyStore(device, STGM_READ, &prop_store);
WASAPI_HR_CHECK(hr, "IMMDevice::OpenPropertyStore", goto error);
PropVariantInit(&prop_var);
prop_var_init = true;
hr = _IPropertyStore_GetValue(prop_store, PKEY_Device_FriendlyName,
&prop_var);
WASAPI_HR_CHECK(hr, "IPropertyStore::GetValue", goto error);
ir = WideCharToMultiByte(CP_ACP, 0, prop_var.pwszVal, -1,
NULL, 0, NULL, NULL);
WASAPI_SR_CHECK(ir, "WideCharToMultiByte", goto error);
dev_name_str = (char *)malloc(ir);
WASAPI_CHECK(dev_name_str, "Out of memory", goto error);
ir = WideCharToMultiByte(CP_ACP, 0, prop_var.pwszVal, -1,
dev_name_str, ir, NULL, NULL);
WASAPI_SR_CHECK(ir, "WideCharToMultiByte", goto error);
RARCH_LOG("[WASAPI]: %s %s\n", dev_name_str, dev_id_str);
br = string_list_append(sl, dev_id_str, attr);
WASAPI_CHECK(br, "string_list_append failed", goto error);
PropVariantClear(&prop_var);
prop_var_init = false;
WASAPI_CO_FREE(dev_id_wstr);
WASAPI_FREE(dev_id_str);
WASAPI_FREE(dev_name_str);
WASAPI_RELEASE(prop_store);
WASAPI_RELEASE(device);
}
WASAPI_RELEASE(collection);
WASAPI_RELEASE(enumerator);
return sl;
error:
WASAPI_FREE(dev_id_str);
WASAPI_FREE(dev_name_str);
if (prop_var_init)
PropVariantClear(&prop_var);
WASAPI_RELEASE(prop_store);
WASAPI_CO_FREE(dev_id_wstr);
WASAPI_RELEASE(device);
WASAPI_RELEASE(collection);
WASAPI_RELEASE(enumerator);
if (sl)
string_list_free(sl);
RARCH_ERR("[WASAPI]: Device enumeration failed.\n");
return NULL;
}
static void wasapi_device_list_free(void *u, void *slp)
{
struct string_list *sl = (struct string_list*)slp;
string_list_free(sl);
}
static size_t wasapi_write_avail(void *wh)
{
HRESULT hr;
wasapi_t *w = (wasapi_t*)wh;
UINT32 padding = 0;
if (w->buffer)
return fifo_write_avail(w->buffer);
hr = _IAudioClient_GetCurrentPadding(w->client, &padding);
WASAPI_HR_CHECK(hr, "IAudioClient::GetCurrentPadding", return 0);
return w->engine_buffer_size - padding * w->frame_size;
}
static size_t wasapi_buffer_size(void *wh)
{
wasapi_t *w = (wasapi_t*)wh;
if (!w->exclusive && w->buffer)
return w->buffer->size;
return w->engine_buffer_size;
}
audio_driver_t audio_wasapi = {
wasapi_init,
wasapi_write,
wasapi_stop,
wasapi_start,
wasapi_alive,
wasapi_set_nonblock_state,
wasapi_free,
wasapi_use_float,
"wasapi",
wasapi_device_list_new,
wasapi_device_list_free,
wasapi_write_avail,
wasapi_buffer_size
};
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