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mpv/audio/out/ao_wasapi_utils.c

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/*
* This file is part of mpv.
*
* Original author: Jonathan Yong <10walls@gmail.com>
*
* mpv 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 Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#define COBJMACROS 1
#define _WIN32_WINNT 0x600
#include <initguid.h>
#include <audioclient.h>
#include <endpointvolume.h>
#include <mmdeviceapi.h>
#include <avrt.h>
#include "audio/out/ao_wasapi_utils.h"
#include "audio/format.h"
#include "osdep/io.h"
#define MIXER_DEFAULT_LABEL L"mpv - video player"
#define EXIT_ON_ERROR(hres) \
do { if (FAILED(hres)) { goto exit_label; } } while(0)
#define SAFE_RELEASE(unk, release) \
do { if ((unk) != NULL) { release; (unk) = NULL; } } while(0)
#ifndef PKEY_Device_FriendlyName
DEFINE_PROPERTYKEY(PKEY_Device_FriendlyName,
0xa45c254e, 0xdf1c, 0x4efd, 0x80, 0x20,
0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, 14);
DEFINE_PROPERTYKEY(PKEY_Device_DeviceDesc,
0xa45c254e, 0xdf1c, 0x4efd, 0x80, 0x20,
0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, 2);
#endif
/* Supposed to use __uuidof, but it is C++ only, declare our own */
static const GUID local_KSDATAFORMAT_SUBTYPE_PCM = {
0x1, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
};
static const GUID local_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT = {
0x3, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
};
union WAVEFMT {
WAVEFORMATEX *ex;
WAVEFORMATEXTENSIBLE *extensible;
};
int wasapi_fill_VistaBlob(wasapi_state *state)
{
if (!state)
return 1;
state->VistaBlob.hAvrt = LoadLibraryW(L"avrt.dll");
if (!state->VistaBlob.hAvrt)
goto exit_label;
state->VistaBlob.pAvSetMmThreadCharacteristicsW =
(HANDLE (WINAPI *)(LPCWSTR, LPDWORD))
GetProcAddress(state->VistaBlob.hAvrt, "AvSetMmThreadCharacteristicsW");
state->VistaBlob.pAvRevertMmThreadCharacteristics =
(WINBOOL (WINAPI *)(HANDLE))
GetProcAddress(state->VistaBlob.hAvrt, "AvRevertMmThreadCharacteristics");
return 0;
exit_label:
if (state->VistaBlob.hAvrt)
FreeLibrary(state->VistaBlob.hAvrt);
return 1;
}
const char *wasapi_explain_err(const HRESULT hr)
{
#define E(x) case x : return # x ;
switch (hr) {
E(S_OK)
E(AUDCLNT_E_NOT_INITIALIZED)
E(AUDCLNT_E_ALREADY_INITIALIZED)
E(AUDCLNT_E_WRONG_ENDPOINT_TYPE)
E(AUDCLNT_E_DEVICE_INVALIDATED)
E(AUDCLNT_E_NOT_STOPPED)
E(AUDCLNT_E_BUFFER_TOO_LARGE)
E(AUDCLNT_E_OUT_OF_ORDER)
E(AUDCLNT_E_UNSUPPORTED_FORMAT)
E(AUDCLNT_E_INVALID_SIZE)
E(AUDCLNT_E_DEVICE_IN_USE)
E(AUDCLNT_E_BUFFER_OPERATION_PENDING)
E(AUDCLNT_E_THREAD_NOT_REGISTERED)
E(AUDCLNT_E_EXCLUSIVE_MODE_NOT_ALLOWED)
E(AUDCLNT_E_ENDPOINT_CREATE_FAILED)
E(AUDCLNT_E_SERVICE_NOT_RUNNING)
E(AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED)
E(AUDCLNT_E_EXCLUSIVE_MODE_ONLY)
E(AUDCLNT_E_BUFDURATION_PERIOD_NOT_EQUAL)
E(AUDCLNT_E_EVENTHANDLE_NOT_SET)
E(AUDCLNT_E_INCORRECT_BUFFER_SIZE)
E(AUDCLNT_E_BUFFER_SIZE_ERROR)
E(AUDCLNT_E_CPUUSAGE_EXCEEDED)
E(AUDCLNT_E_BUFFER_ERROR)
E(AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED)
E(AUDCLNT_E_INVALID_DEVICE_PERIOD)
E(AUDCLNT_E_INVALID_STREAM_FLAG)
E(AUDCLNT_E_ENDPOINT_OFFLOAD_NOT_CAPABLE)
E(AUDCLNT_E_RESOURCES_INVALIDATED)
E(AUDCLNT_S_BUFFER_EMPTY)
E(AUDCLNT_S_THREAD_ALREADY_REGISTERED)
E(AUDCLNT_S_POSITION_STALLED)
default:
return "<Unknown>";
}
#undef E
}
static void set_format(WAVEFORMATEXTENSIBLE *wformat, WORD bytepersample,
DWORD samplerate, WORD channels, DWORD chanmask)
{
int block_align = channels * bytepersample;
wformat->Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE; /* Only PCM is supported */
wformat->Format.nChannels = channels;
wformat->Format.nSamplesPerSec = samplerate;
wformat->Format.nAvgBytesPerSec = samplerate * block_align;
wformat->Format.nBlockAlign = block_align;
wformat->Format.wBitsPerSample = bytepersample * 8;
wformat->Format.cbSize =
22; /* must be at least 22 for WAVE_FORMAT_EXTENSIBLE */
if (bytepersample == 4)
wformat->SubFormat = local_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
else
wformat->SubFormat = local_KSDATAFORMAT_SUBTYPE_PCM;
wformat->Samples.wValidBitsPerSample = wformat->Format.wBitsPerSample;
wformat->dwChannelMask = chanmask;
}
static int format_set_bits(int old_format, int bits, int fp) {
int format = old_format;
format &= (~AF_FORMAT_BITS_MASK) & (~AF_FORMAT_POINT_MASK) & (~AF_FORMAT_SIGN_MASK);
format |= AF_FORMAT_SI;
switch (bits) {
case 32:
format |= AF_FORMAT_32BIT;
break;
case 24:
format |= AF_FORMAT_24BIT;
break;
case 16:
format |= AF_FORMAT_16BIT;
break;
default:
abort(); // (should be) unreachable
}
if (fp) {
format |= AF_FORMAT_F;
} else {
format |= AF_FORMAT_I;
}
return format;
}
static int set_ao_format(struct wasapi_state *state,
struct ao *const ao,
WAVEFORMATEXTENSIBLE wformat) {
// .Data1 == 1 is PCM, .Data1 == 3 is IEEE_FLOAT
int format = format_set_bits(ao->format,
wformat.Format.wBitsPerSample, wformat.SubFormat.Data1 == 3);
if (wformat.SubFormat.Data1 != 1 && wformat.SubFormat.Data1 != 3) {
MP_ERR(ao, "unknown SubFormat %"PRIu32"\n",
(uint32_t)wformat.SubFormat.Data1);
return 0;
}
ao->samplerate = wformat.Format.nSamplesPerSec;
ao->bps = wformat.Format.nAvgBytesPerSec;
ao->format = format;
if (ao->channels.num != wformat.Format.nChannels) {
mp_chmap_from_channels(&ao->channels, wformat.Format.nChannels);
}
state->format = wformat;
return 1;
}
static int try_format(struct wasapi_state *state,
struct ao *const ao,
int bits, int samplerate,
const struct mp_chmap channels)
{
WAVEFORMATEXTENSIBLE wformat;
set_format(&wformat, bits / 8, samplerate, channels.num, mp_chmap_to_waveext(&channels));
int af_format = format_set_bits(ao->format, bits, bits == 32);
MP_VERBOSE(ao, "trying %dch %s @ %dhz\n",
channels.num, af_fmt_to_str(af_format), samplerate);
union WAVEFMT u;
u.extensible = &wformat;
WAVEFORMATEX *closestMatch;
HRESULT hr = IAudioClient_IsFormatSupported(state->pAudioClient,
state->share_mode,
u.ex, &closestMatch);
if (closestMatch) {
if (closestMatch->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
u.ex = closestMatch;
wformat = *u.extensible;
} else {
wformat.Format = *closestMatch;
}
CoTaskMemFree(closestMatch);
}
if (hr == S_FALSE) {
if (set_ao_format(state, ao, wformat)) {
MP_VERBOSE(ao, "accepted as %dch %s @ %dhz\n",
ao->channels.num, af_fmt_to_str(ao->format), ao->samplerate);
return 1;
}
} if (hr == S_OK || (!state->opt_exclusive && hr == AUDCLNT_E_UNSUPPORTED_FORMAT)) {
// AUDCLNT_E_UNSUPPORTED_FORMAT here means "works in shared, doesn't in exclusive"
if (set_ao_format(state, ao, wformat)) {
MP_VERBOSE(ao, "%dch %s @ %dhz accepted\n",
ao->channels.num, af_fmt_to_str(af_format), samplerate);
return 1;
}
}
return 0;
}
static int try_mix_format(struct wasapi_state *state,
struct ao *const ao)
{
WAVEFORMATEX *deviceFormat = NULL;
WAVEFORMATEX *closestMatch = NULL;
int ret = 0;
HRESULT hr = IAudioClient_GetMixFormat(state->pAudioClient, &deviceFormat);
EXIT_ON_ERROR(hr);
union WAVEFMT u;
u.ex = deviceFormat;
WAVEFORMATEXTENSIBLE wformat = *u.extensible;
ret = try_format(state, ao, wformat.Format.wBitsPerSample,
wformat.Format.nSamplesPerSec, ao->channels);
if (ret)
state->format = wformat;
exit_label:
SAFE_RELEASE(deviceFormat, CoTaskMemFree(deviceFormat));
SAFE_RELEASE(closestMatch, CoTaskMemFree(closestMatch));
return ret;
}
static int try_passthrough(struct wasapi_state *state,
struct ao *const ao)
{
WAVEFORMATEXTENSIBLE wformat = {
.Format = {
.wFormatTag = WAVE_FORMAT_EXTENSIBLE,
.nChannels = ao->channels.num,
.nSamplesPerSec = ao->samplerate,
.nAvgBytesPerSec = (ao->samplerate) * (ao->channels.num * 2),
.nBlockAlign = ao->channels.num * 2,
.wBitsPerSample = 16,
.cbSize = sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX),
},
.Samples.wValidBitsPerSample = 16,
.dwChannelMask = mp_chmap_to_waveext(&ao->channels),
.SubFormat = local_KSDATAFORMAT_SUBTYPE_PCM,
};
wformat.SubFormat.Data1 = WAVE_FORMAT_DOLBY_AC3_SPDIF; // see INIT_WAVEFORMATEX_GUID macro
union WAVEFMT u;
u.extensible = &wformat;
MP_VERBOSE(ao, "trying passthrough for %s...\n",
af_fmt_to_str((ao->format&~AF_FORMAT_END_MASK) | AF_FORMAT_LE));
HRESULT hr = IAudioClient_IsFormatSupported(state->pAudioClient,
state->share_mode,
u.ex, NULL);
if (!FAILED(hr)) {
ao->format = (ao->format&~AF_FORMAT_END_MASK) | AF_FORMAT_LE;
state->format = wformat;
return 1;
}
return 0;
}
static int find_formats(struct ao *const ao)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
if (AF_FORMAT_IS_IEC61937(ao->format) || ao->format == AF_FORMAT_MPEG2) {
if (try_passthrough(state, ao))
return 0;
MP_ERR(ao, "couldn't use passthrough!");
if (!state->opt_exclusive)
MP_ERR(ao, " (try exclusive mode)");
MP_ERR(ao, "\n");
return -1;
}
/* See if the format works as-is */
int bits = af_fmt2bits(ao->format);
/* don't try 8bits -- there are various 8bit modes other than PCM (*-law et al);
let's just stick to PCM or float here. */
if (bits == 8) {
bits = 16;
} else if (try_format(state, ao, bits, ao->samplerate, ao->channels)) {
return 0;
}
if (!state->opt_exclusive) {
/* shared mode, we can use the system default mix format. */
if (try_mix_format(state, ao)) {
return 0;
}
MP_WARN(ao, "couldn't use default mix format!\n");
}
/* Exclusive mode, we have to guess. */
/* as far as testing shows, only PCM 16/24LE (44100Hz - 192kHz) is supported
* Tested on Realtek High Definition Audio, (Realtek Semiconductor Corp. 6.0.1.6312)
* Drivers dated 2/18/2011
*/
/* try float first for non-16bit audio */
if (bits != 16) {
bits = 32;
}
int start_bits = bits;
while (1) { // not infinite -- returns at bottom
for (; bits > 8; bits -= 8) {
int samplerate = ao->samplerate;
if (try_format(state, ao, bits, samplerate, ao->channels)) {
return 0;
}
// make samplerate fit in [44100 192000]
// we check for samplerate > 96k so that we can upsample instead of downsampling later
if (samplerate < 44100 || samplerate > 96000) {
if (samplerate < 44100)
samplerate = 44100;
if (samplerate > 96000)
samplerate = 192000;
if (try_format(state, ao, bits, samplerate, ao->channels)) {
return 0;
}
}
// try bounding to 96kHz
if (samplerate > 48000) {
samplerate = 96000;
if (try_format(state, ao, bits, samplerate, ao->channels)) {
return 0;
}
}
// try bounding to 48kHz
if (samplerate > 44100) {
samplerate = 48000;
if (try_format(state, ao, bits, samplerate, ao->channels)) {
return 0;
}
}
/* How bad is this? try 44100hz, but only on 16bit */
if (bits == 16 && samplerate != 44100) {
samplerate = 44100;
if (try_format(state, ao, bits, samplerate, ao->channels)) {
return 0;
}
}
}
if (ao->channels.num > 6) {
/* Maybe this is 5.1 hardware with no support for more. */
bits = start_bits;
mp_chmap_from_channels(&ao->channels, 6);
} else if (ao->channels.num != 2) {
/* Poor quality hardware? Try stereo mode, go through the list again. */
bits = start_bits;
mp_chmap_from_channels(&ao->channels, 2);
} else {
MP_ERR(ao, "couldn't find acceptable audio format!\n");
return -1;
}
}
}
static int init_clock(struct wasapi_state *state) {
HRESULT hr;
hr = IAudioClient_GetService(state->pAudioClient,
&IID_IAudioClock,
(void **)&state->pAudioClock);
EXIT_ON_ERROR(hr);
hr = IAudioClock_GetFrequency(state->pAudioClock, &state->clock_frequency);
EXIT_ON_ERROR(hr);
QueryPerformanceFrequency(&state->qpc_frequency);
atomic_store(&state->sample_count, 0);
MP_VERBOSE(state, "IAudioClock::GetFrequency gave a frequency of %"PRIu64".\n", (uint64_t) state->clock_frequency);
return 0;
exit_label:
MP_ERR(state, "init_clock failed with %s, unable to obtain the audio device's timing!\n",
wasapi_explain_err(hr));
return 1;
}
static int init_session_display(struct wasapi_state *state) {
HRESULT hr;
wchar_t path[MAX_PATH+12] = {0};
hr = IAudioClient_GetService(state->pAudioClient,
&IID_IAudioSessionControl,
(void **) &state->pSessionControl);
EXIT_ON_ERROR(hr);
GetModuleFileNameW(NULL, path, MAX_PATH);
lstrcatW(path, L",-IDI_ICON1");
hr = IAudioSessionControl_SetDisplayName(state->pSessionControl, MIXER_DEFAULT_LABEL, NULL);
EXIT_ON_ERROR(hr);
hr = IAudioSessionControl_SetIconPath(state->pSessionControl, path, NULL);
EXIT_ON_ERROR(hr);
return 0;
exit_label:
MP_ERR(state, "init_session_display failed with %s.\n",
wasapi_explain_err(hr));
return 1;
}
static int fix_format(struct wasapi_state *state)
{
HRESULT hr;
double offset = 0.5;
/* cargo cult code to negotiate buffer block size, affected by hardware/drivers combinations,
gradually grow it to 10s, by 0.5s, consider failure if it still doesn't work
*/
hr = IAudioClient_GetDevicePeriod(state->pAudioClient,
&state->defaultRequestedDuration,
&state->minRequestedDuration);
reinit:
hr = IAudioClient_Initialize(state->pAudioClient,
state->share_mode,
AUDCLNT_STREAMFLAGS_EVENTCALLBACK,
state->defaultRequestedDuration,
state->defaultRequestedDuration,
&(state->format.Format),
NULL);
/* something about buffer sizes on Win7, fixme might loop forever */
if (hr == AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED) {
MP_VERBOSE(state, "IAudioClient::Initialize negotiation failed with %s, used %lld * 100ns\n",
wasapi_explain_err(hr), state->defaultRequestedDuration);
if (offset > 10.0)
goto exit_label; /* is 10 enough to break out of the loop?*/
IAudioClient_GetBufferSize(state->pAudioClient, &state->bufferFrameCount);
state->defaultRequestedDuration =
(REFERENCE_TIME)((10000.0 * 1000 / state->format.Format.nSamplesPerSec *
state->bufferFrameCount) + offset);
offset += 0.5;
IAudioClient_Release(state->pAudioClient);
state->pAudioClient = NULL;
hr = IMMDeviceActivator_Activate(state->pDevice,
&IID_IAudioClient, CLSCTX_ALL,
NULL, (void **)&state->pAudioClient);
goto reinit;
}
EXIT_ON_ERROR(hr);
hr = IAudioClient_GetService(state->pAudioClient,
&IID_IAudioRenderClient,
(void **)&state->pRenderClient);
EXIT_ON_ERROR(hr);
hr = IAudioClient_GetService(state->pAudioClient,
&IID_ISimpleAudioVolume,
(void **) &state->pAudioVolume);
EXIT_ON_ERROR(hr);
if (!state->hFeed)
goto exit_label;
hr = IAudioClient_SetEventHandle(state->pAudioClient, state->hFeed);
EXIT_ON_ERROR(hr);
hr = IAudioClient_GetBufferSize(state->pAudioClient,
&state->bufferFrameCount);
EXIT_ON_ERROR(hr);
state->buffer_block_size = state->format.Format.nChannels *
state->format.Format.wBitsPerSample / 8 *
state->bufferFrameCount;
if (init_clock(state))
return 1;
if (init_session_display(state))
return 1;
state->hTask =
state->VistaBlob.pAvSetMmThreadCharacteristicsW(L"Pro Audio", &state->taskIndex);
MP_VERBOSE(state, "fix_format OK, using %lld byte buffer block size!\n",
(long long) state->buffer_block_size);
return 0;
exit_label:
MP_ERR(state, "fix_format fails with %s, failed to determine buffer block size!\n",
wasapi_explain_err(hr));
return 1;
}
static char* get_device_id(IMMDevice *pDevice) {
if (!pDevice) {
return NULL;
}
LPWSTR devid = NULL;
char *idstr = NULL;
HRESULT hr = IMMDevice_GetId(pDevice, &devid);
EXIT_ON_ERROR(hr);
idstr = mp_to_utf8(NULL, devid);
if (strstr(idstr, "{0.0.0.00000000}.")) {
char *stripped = talloc_strdup(NULL, idstr + strlen("{0.0.0.00000000}."));
talloc_free(idstr);
idstr = stripped;
}
exit_label:
SAFE_RELEASE(devid, CoTaskMemFree(devid));
return idstr;
}
static char* get_device_name(IMMDevice *pDevice) {
if (!pDevice) {
return NULL;
}
IPropertyStore *pProps = NULL;
char *namestr = NULL;
HRESULT hr = IMMDevice_OpenPropertyStore(pDevice, STGM_READ, &pProps);
EXIT_ON_ERROR(hr);
PROPVARIANT devname;
PropVariantInit(&devname);
hr = IPropertyStore_GetValue(pProps, &PKEY_Device_FriendlyName, &devname);
EXIT_ON_ERROR(hr);
namestr = mp_to_utf8(NULL, devname.pwszVal);
exit_label:
PropVariantClear(&devname);
SAFE_RELEASE(pProps, IPropertyStore_Release(pProps));
return namestr;
}
static char* get_device_desc(IMMDevice *pDevice) {
if (!pDevice) {
return NULL;
}
IPropertyStore *pProps = NULL;
char *desc = NULL;
HRESULT hr = IMMDevice_OpenPropertyStore(pDevice, STGM_READ, &pProps);
EXIT_ON_ERROR(hr);
PROPVARIANT devdesc;
PropVariantInit(&devdesc);
hr = IPropertyStore_GetValue(pProps, &PKEY_Device_DeviceDesc, &devdesc);
EXIT_ON_ERROR(hr);
desc = mp_to_utf8(NULL, devdesc.pwszVal);
exit_label:
PropVariantClear(&devdesc);
SAFE_RELEASE(pProps, IPropertyStore_Release(pProps));
return desc;
}
// frees *idstr
static int device_id_match(char *idstr, char *candidate) {
if (idstr == NULL || candidate == NULL)
return 0;
int found = 0;
#define FOUND(x) do { found = (x); goto end; } while(0)
if (strcmp(idstr, candidate) == 0)
FOUND(1);
if (strstr(idstr, "{0.0.0.00000000}.")) {
char *start = idstr + strlen("{0.0.0.00000000}.");
if (strcmp(start, candidate) == 0)
FOUND(1);
}
#undef FOUND
end:
talloc_free(idstr);
return found;
}
static HRESULT enumerate_with_state(struct mp_log *log, char *header,
int status, int with_id)
{
HRESULT hr;
IMMDeviceEnumerator *pEnumerator = NULL;
IMMDeviceCollection *pDevices = NULL;
IMMDevice *pDevice = NULL;
char *defid = NULL;
hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL,
&IID_IMMDeviceEnumerator, (void **)&pEnumerator);
EXIT_ON_ERROR(hr);
hr = IMMDeviceEnumerator_GetDefaultAudioEndpoint(pEnumerator,
eRender, eConsole,
&pDevice);
EXIT_ON_ERROR(hr);
defid = get_device_id(pDevice);
SAFE_RELEASE(pDevice, IMMDevice_Release(pDevice));
hr = IMMDeviceEnumerator_EnumAudioEndpoints(pEnumerator, eRender,
status, &pDevices);
EXIT_ON_ERROR(hr);
int count;
IMMDeviceCollection_GetCount(pDevices, &count);
if (count > 0) {
mp_info(log, "%s\n", header);
}
for (int i = 0; i < count; i++) {
hr = IMMDeviceCollection_Item(pDevices, i, &pDevice);
EXIT_ON_ERROR(hr);
char *name = get_device_name(pDevice);
char *id = get_device_id(pDevice);
char *mark = "";
if (strcmp(id, defid) == 0)
mark = " (default)";
if (with_id) {
mp_info(log, "Device #%d: %s, ID: %s%s\n", i, name, id, mark);
} else {
mp_info(log, "%s, ID: %s%s\n", name, id, mark);
}
talloc_free(name);
talloc_free(id);
SAFE_RELEASE(pDevice, IMMDevice_Release(pDevice));
}
talloc_free(defid);
SAFE_RELEASE(pDevices, IMMDeviceCollection_Release(pDevices));
SAFE_RELEASE(pEnumerator, IMMDeviceEnumerator_Release(pEnumerator));
return hr;
exit_label:
talloc_free(defid);
SAFE_RELEASE(pDevice, IMMDevice_Release(pDevice));
SAFE_RELEASE(pDevices, IMMDeviceCollection_Release(pDevices));
SAFE_RELEASE(pEnumerator, IMMDeviceEnumerator_Release(pEnumerator));
return hr;
}
int wasapi_enumerate_devices(struct mp_log *log)
{
HRESULT hr;
CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
hr = enumerate_with_state(log, "Active devices:", DEVICE_STATE_ACTIVE, 1);
EXIT_ON_ERROR(hr);
hr = enumerate_with_state(log, "Unplugged devices:", DEVICE_STATE_UNPLUGGED, 0);
EXIT_ON_ERROR(hr);
CoUninitialize();
return 0;
exit_label:
mp_err(log, "Error enumerating devices: HRESULT %08"PRIx32" \"%s\"\n",
(uint32_t)hr, wasapi_explain_err(hr));
CoUninitialize();
return 1;
}
static HRESULT find_and_load_device(struct ao *ao, IMMDevice **ppDevice,
char *search)
{
HRESULT hr;
IMMDeviceEnumerator *pEnumerator = NULL;
IMMDeviceCollection *pDevices = NULL;
IMMDevice *pTempDevice = NULL;
LPWSTR deviceID = NULL;
char *end;
int devno = (int) strtol(search, &end, 10);
char *devid = NULL;
if (end == search || *end) {
devid = search;
}
hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL,
&IID_IMMDeviceEnumerator, (void**)&pEnumerator);
EXIT_ON_ERROR(hr);
int search_err = 0;
if (devid == NULL) {
hr = IMMDeviceEnumerator_EnumAudioEndpoints(pEnumerator, eRender,
DEVICE_STATE_ACTIVE, &pDevices);
EXIT_ON_ERROR(hr);
int count;
IMMDeviceCollection_GetCount(pDevices, &count);
if (devno >= count) {
MP_ERR(ao, "no device #%d!\n", devno);
} else {
MP_VERBOSE(ao, "finding device #%d\n", devno);
hr = IMMDeviceCollection_Item(pDevices, devno, &pTempDevice);
EXIT_ON_ERROR(hr);
hr = IMMDevice_GetId(pTempDevice, &deviceID);
EXIT_ON_ERROR(hr);
MP_VERBOSE(ao, "found device #%d\n", devno);
}
} else {
hr = IMMDeviceEnumerator_EnumAudioEndpoints(pEnumerator, eRender,
DEVICE_STATE_ACTIVE|DEVICE_STATE_UNPLUGGED,
&pDevices);
EXIT_ON_ERROR(hr);
int count;
IMMDeviceCollection_GetCount(pDevices, &count);
MP_VERBOSE(ao, "finding device %s\n", devid);
IMMDevice *prevDevice = NULL;
for (int i = 0; i < count; i++) {
hr = IMMDeviceCollection_Item(pDevices, i, &pTempDevice);
EXIT_ON_ERROR(hr);
if (device_id_match(get_device_id(pTempDevice), devid)) {
hr = IMMDevice_GetId(pTempDevice, &deviceID);
EXIT_ON_ERROR(hr);
break;
}
char *desc = get_device_desc(pTempDevice);
if (strstr(desc, devid)) {
if (deviceID) {
char *name;
if (!search_err) {
MP_ERR(ao, "multiple matching devices found!\n");
name = get_device_name(prevDevice);
MP_ERR(ao, "%s\n", name);
talloc_free(name);
search_err = 1;
}
name = get_device_name(pTempDevice);
MP_ERR(ao, "%s\n", name);
talloc_free(name);
}
hr = IMMDevice_GetId(pTempDevice, &deviceID);
prevDevice = pTempDevice;
}
talloc_free(desc);
SAFE_RELEASE(pTempDevice, IMMDevice_Release(pTempDevice));
}
if (deviceID == NULL) {
MP_ERR(ao, "could not find device %s!\n", devid);
}
}
SAFE_RELEASE(pTempDevice, IMMDevice_Release(pTempDevice));
SAFE_RELEASE(pDevices, IMMDeviceCollection_Release(pDevices));
if (deviceID == NULL || search_err) {
hr = E_NOTFOUND;
} else {
MP_VERBOSE(ao, "loading device %S\n", deviceID);
hr = IMMDeviceEnumerator_GetDevice(pEnumerator, deviceID, ppDevice);
if (FAILED(hr)) {
MP_ERR(ao, "could not load requested device!\n");
}
}
exit_label:
SAFE_RELEASE(pTempDevice, IMMDevice_Release(pTempDevice));
SAFE_RELEASE(pDevices, IMMDeviceCollection_Release(pDevices));
SAFE_RELEASE(pEnumerator, IMMDeviceEnumerator_Release(pEnumerator));
return hr;
}
int wasapi_validate_device(struct mp_log *log, const m_option_t *opt,
struct bstr name, struct bstr param)
{
if (bstr_equals0(param, "help")) {
wasapi_enumerate_devices(log);
return M_OPT_EXIT;
}
mp_dbg(log, "validating device=%s\n", param.start);
char *end;
int devno = (int) strtol(param.start, &end, 10);
int ret = 1;
if ((end == (void*)param.start || *end) && devno < 0)
ret = M_OPT_OUT_OF_RANGE;
mp_dbg(log, "device=%s %svalid\n", param.start, ret == 1 ? "" : "not ");
return ret;
}
HRESULT wasapi_setup_proxies(struct wasapi_state *state) {
HRESULT hr;
CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
#define UNMARSHAL(type, to, from) do { \
hr = CoGetInterfaceAndReleaseStream((from), &(type), (void**) &(to)); \
(from) = NULL; \
EXIT_ON_ERROR(hr); \
} while (0)
UNMARSHAL(IID_IAudioClient, state->pAudioClientProxy, state->sAudioClient);
UNMARSHAL(IID_ISimpleAudioVolume, state->pAudioVolumeProxy, state->sAudioVolume);
UNMARSHAL(IID_IAudioEndpointVolume, state->pEndpointVolumeProxy, state->sEndpointVolume);
UNMARSHAL(IID_IAudioSessionControl, state->pSessionControlProxy, state->sSessionControl);
#undef UNMARSHAL
exit_label:
if (hr != S_OK) {
MP_ERR(state, "error reading COM proxy: %08x %s\n", (unsigned int)hr,
wasapi_explain_err(hr));
}
return hr;
}
void wasapi_release_proxies(wasapi_state *state) {
SAFE_RELEASE(state->pAudioClientProxy, IUnknown_Release(state->pAudioClientProxy));
SAFE_RELEASE(state->pAudioVolumeProxy, IUnknown_Release(state->pAudioVolumeProxy));
SAFE_RELEASE(state->pEndpointVolumeProxy, IUnknown_Release(state->pEndpointVolumeProxy));
SAFE_RELEASE(state->pSessionControlProxy, IUnknown_Release(state->pSessionControlProxy));
CoUninitialize();
}
static HRESULT create_proxies(struct wasapi_state *state) {
HRESULT hr;
#define MARSHAL(type, to, from) do { \
hr = CreateStreamOnHGlobal(NULL, TRUE, &(to)); \
EXIT_ON_ERROR(hr); \
hr = CoMarshalInterThreadInterfaceInStream(&(type), \
(IUnknown*) (from), \
&(to)); \
EXIT_ON_ERROR(hr); \
} while (0)
MARSHAL(IID_IAudioClient, state->sAudioClient, state->pAudioClient);
MARSHAL(IID_ISimpleAudioVolume, state->sAudioVolume, state->pAudioVolume);
MARSHAL(IID_IAudioEndpointVolume, state->sEndpointVolume, state->pEndpointVolume);
MARSHAL(IID_IAudioSessionControl, state->sSessionControl, state->pSessionControl);
exit_label:
return hr;
}
int wasapi_thread_init(struct ao *ao)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
HRESULT hr;
CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
if (!state->opt_device) {
IMMDeviceEnumerator *pEnumerator;
hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL,
&IID_IMMDeviceEnumerator, (void**)&pEnumerator);
EXIT_ON_ERROR(hr);
hr = IMMDeviceEnumerator_GetDefaultAudioEndpoint(pEnumerator,
eRender, eConsole,
&state->pDevice);
SAFE_RELEASE(pEnumerator, IMMDeviceEnumerator_Release(pEnumerator));
char *id = get_device_id(state->pDevice);
MP_VERBOSE(ao, "default device ID: %s\n", id);
talloc_free(id);
} else {
hr = find_and_load_device(ao, &state->pDevice, state->opt_device);
}
EXIT_ON_ERROR(hr);
char *name = get_device_name(state->pDevice);
MP_VERBOSE(ao, "device loaded: %s\n", name);
talloc_free(name);
hr = IMMDeviceActivator_Activate(state->pDevice, &IID_IAudioClient,
CLSCTX_ALL, NULL, (void **)&state->pAudioClient);
EXIT_ON_ERROR(hr);
hr = IMMDeviceActivator_Activate(state->pDevice, &IID_IAudioEndpointVolume,
CLSCTX_ALL, NULL,
(void **)&state->pEndpointVolume);
EXIT_ON_ERROR(hr);
IAudioEndpointVolume_QueryHardwareSupport(state->pEndpointVolume,
&state->vol_hw_support);
state->init_ret = find_formats(ao); /* Probe support formats */
if (state->init_ret)
goto exit_label;
if (!fix_format(state)) { /* now that we're sure what format to use */
EXIT_ON_ERROR(create_proxies(state));
if (state->opt_exclusive)
IAudioEndpointVolume_GetMasterVolumeLevelScalar(state->pEndpointVolume,
&state->initial_volume);
else
ISimpleAudioVolume_GetMasterVolume(state->pAudioVolume,
&state->initial_volume);
state->previous_volume = state->initial_volume;
MP_VERBOSE(ao, "thread_init OK!\n");
SetEvent(state->init_done);
return state->init_ret;
}
exit_label:
state->init_ret = -1;
SetEvent(state->init_done);
return -1;
}
void wasapi_thread_uninit(wasapi_state *state)
{
if (state->pAudioClient)
IAudioClient_Stop(state->pAudioClient);
if (state->opt_exclusive)
IAudioEndpointVolume_SetMasterVolumeLevelScalar(state->pEndpointVolume,
state->initial_volume, NULL);
SAFE_RELEASE(state->pRenderClient, IAudioRenderClient_Release(state->pRenderClient));
SAFE_RELEASE(state->pAudioClock, IAudioClock_Release(state->pAudioClock));
SAFE_RELEASE(state->pAudioVolume, ISimpleAudioVolume_Release(state->pAudioVolume));
SAFE_RELEASE(state->pEndpointVolume, IAudioEndpointVolume_Release(state->pEndpointVolume));
SAFE_RELEASE(state->pSessionControl, IAudioSessionControl_Release(state->pSessionControl));
SAFE_RELEASE(state->pAudioClient, IAudioClient_Release(state->pAudioClient));
SAFE_RELEASE(state->pDevice, IMMDevice_Release(state->pDevice));
if (state->hTask)
state->VistaBlob.pAvRevertMmThreadCharacteristics(state->hTask);
CoUninitialize();
ExitThread(0);
}
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