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a6bf38bcad
mpv/audio/out/ao_wasapi_utils.c
Kevin Mitchell a6bf38bcad ao/wasapi: add ao hotplug 
Create a second copy of the change_notify structure for the hotplug
ao. change_notify->is_hotplug distinguishes the hotplug version from
the regular one monitoring the currently playing ao. Also make the
change notification less verbose now that there might be two of them around.
2015-03-31 02:02:54 -07:00

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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/>.
*/
#include <math.h>
#include <libavutil/common.h>
#include <windows.h>
#include <ksguid.h>
#include <ksmedia.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"
#include "osdep/timer.h"
#define MIXER_DEFAULT_LABEL L"mpv - video player"
DEFINE_PROPERTYKEY(mp_PKEY_Device_FriendlyName,
0xa45c254e, 0xdf1c, 0x4efd, 0x80, 0x20,
0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, 14);
DEFINE_PROPERTYKEY(mp_PKEY_Device_DeviceDesc,
0xa45c254e, 0xdf1c, 0x4efd, 0x80, 0x20,
0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, 2);
char *mp_GUID_to_str_buf(char *buf, size_t buf_size, const GUID *guid)
{
snprintf(buf, buf_size,
"{%8.8x-%4.4x-%4.4x-%2.2x%2.2x-%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x}",
(unsigned) guid->Data1, guid->Data2, guid->Data3,
guid->Data4[0], guid->Data4[1],
guid->Data4[2], guid->Data4[3],
guid->Data4[4], guid->Data4[5],
guid->Data4[6], guid->Data4[7]);
return buf;
}
char *mp_PKEY_to_str_buf(char *buf, size_t buf_size, const PROPERTYKEY *pkey)
{
buf = mp_GUID_to_str_buf(buf, buf_size, &pkey->fmtid);
size_t guid_len = strnlen(buf, buf_size);
snprintf(buf + guid_len, buf_size - guid_len, ",%"PRIu32, (uint32_t) pkey->pid);
return buf;
}
bool wasapi_fill_VistaBlob(wasapi_state *state)
{
if (!state)
goto exit_label;
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");
if (!state->VistaBlob.pAvSetMmThreadCharacteristicsW)
goto exit_label;
state->VistaBlob.pAvRevertMmThreadCharacteristics =
(WINBOOL (WINAPI *)(HANDLE))
GetProcAddress(state->VistaBlob.hAvrt, "AvRevertMmThreadCharacteristics");
if (!state->VistaBlob.pAvRevertMmThreadCharacteristics)
goto exit_label;
return true;
exit_label:
if (state->VistaBlob.hAvrt) {
FreeLibrary(state->VistaBlob.hAvrt);
state->VistaBlob.hAvrt = NULL;
}
return false;
}
const char *wasapi_explain_err(const HRESULT hr)
{
#define E(x) case x : return # x ;
switch (hr) {
E(S_OK)
E(E_FAIL)
E(E_OUTOFMEMORY)
E(E_POINTER)
E(E_HANDLE)
E(E_NOTIMPL)
E(E_INVALIDARG)
E(REGDB_E_IIDNOTREG)
E(CO_E_NOTINITIALIZED)
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 update_waveformat_datarate_pcm(WAVEFORMATEXTENSIBLE *wformat)
{
WAVEFORMATEX *wf = &wformat->Format;
wf->nBlockAlign = wf->nChannels * wf->wBitsPerSample / 8;
wf->nAvgBytesPerSec = wf->nSamplesPerSec * wf->nBlockAlign;
}
static void set_waveformat(WAVEFORMATEXTENSIBLE *wformat,
WORD bits, WORD valid_bits, bool is_float,
DWORD samplerate, struct mp_chmap *channels)
{
wformat->Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
wformat->Format.nChannels = channels->num;
wformat->Format.nSamplesPerSec = samplerate;
wformat->Format.wBitsPerSample = bits;
wformat->Format.cbSize = sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
if (is_float) {
wformat->SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
} else {
wformat->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
}
wformat->Samples.wValidBitsPerSample = valid_bits;
wformat->dwChannelMask = mp_chmap_to_waveext(channels);
update_waveformat_datarate_pcm(wformat);
}
static void set_waveformat_with_ao(WAVEFORMATEXTENSIBLE *wformat, struct ao *ao)
{
// This implicitly transforms all formats to:
// interleaved / signed (except for 8 bit) / waveext channel order.
// You must still call set_ao_format() to ensure consistency.
struct mp_chmap channels = ao->channels;
mp_chmap_reorder_to_waveext(&channels);
set_waveformat(wformat, af_fmt2bits(ao->format), af_fmt2bits(ao->format),
af_fmt_is_float(ao->format), ao->samplerate, &channels);
}
static void change_waveformat_samplerate(WAVEFORMATEXTENSIBLE *wformat,
DWORD samplerate)
{
// other wformat parameters must already be set with set_waveformat
wformat->Format.nSamplesPerSec = samplerate;
update_waveformat_datarate_pcm(wformat);
}
static void change_waveformat_channels(WAVEFORMATEXTENSIBLE *wformat,
struct mp_chmap *channels)
{
// other wformat parameters must already be set with set_waveformat
wformat->Format.nChannels = channels->num;
wformat->dwChannelMask = mp_chmap_to_waveext(channels);
update_waveformat_datarate_pcm(wformat);
}
static WORD waveformat_valid_bits(const WAVEFORMATEX *wf)
{
if (wf->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
WAVEFORMATEXTENSIBLE *wformat = (WAVEFORMATEXTENSIBLE *)wf;
return wformat->Samples.wValidBitsPerSample;
} else {
return wf->wBitsPerSample;
}
}
static bool waveformat_is_float(WAVEFORMATEX *wf)
{
switch (wf->wFormatTag) {
case WAVE_FORMAT_EXTENSIBLE:
{
WAVEFORMATEXTENSIBLE *wformat = (WAVEFORMATEXTENSIBLE *)wf;
return IsEqualGUID(&KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, &wformat->SubFormat);
}
case WAVE_FORMAT_IEEE_FLOAT:
return true;
default:
return false;
}
}
static bool waveformat_is_pcm_int(WAVEFORMATEX *wf)
{
switch (wf->wFormatTag) {
case WAVE_FORMAT_EXTENSIBLE:
{
WAVEFORMATEXTENSIBLE *wformat = (WAVEFORMATEXTENSIBLE *)wf;
return IsEqualGUID(&KSDATAFORMAT_SUBTYPE_PCM, &wformat->SubFormat);
}
case WAVE_FORMAT_PCM:
return true;
default:
return false;
}
}
static int format_from_waveformat(WAVEFORMATEX *wf)
{
int format = 0;
// it is an undocumented fact that 8-bit pcm in WAVEFORMATEX implies unsigned
if (waveformat_is_float(wf)) {
format = AF_FORMAT_FLOAT;
} else if (waveformat_is_pcm_int(wf)) {
format = wf->wBitsPerSample == 8 ? AF_FORMAT_U8 : AF_FORMAT_S32;
} else {
return 0;
}
// https://msdn.microsoft.com/en-us/library/windows/hardware/ff538802%28v=vs.85%29.aspx:
// Since mpv doesn't have the notion of "valid bits", we just specify a
// format with the container size. The least significant, "invalid"
// bits will be excess precision ignored by wasapi.
return af_fmt_change_bits(format, wf->wBitsPerSample);
}
static bool chmap_from_waveformat(struct mp_chmap *channels, const WAVEFORMATEX *wf)
{
if (wf->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
WAVEFORMATEXTENSIBLE *wformat = (WAVEFORMATEXTENSIBLE *)wf;
mp_chmap_from_waveext(channels, wformat->dwChannelMask);
} else {
mp_chmap_from_channels(channels, wf->nChannels);
}
if (channels->num != wf->nChannels) {
mp_chmap_from_str(channels, bstr0("empty"));
return false;
}
return true;
}
static char *waveformat_to_str_buf(char *buf, size_t buf_size, WAVEFORMATEX *wf)
{
char* type = "?";
if (waveformat_is_float(wf)) {
type = "float";
} else if (waveformat_is_pcm_int(wf)) {
type = wf->wBitsPerSample == 8 ? "u" : "s";
}
unsigned valid_bits = waveformat_valid_bits(wf);
struct mp_chmap channels;
chmap_from_waveformat(&channels, wf);
if (valid_bits == wf->wBitsPerSample) {
snprintf(buf, buf_size, "%s %s%u @ %uhz",
mp_chmap_to_str(&channels), type, valid_bits,
(unsigned) wf->nSamplesPerSec);
} else {
snprintf(buf, buf_size, "%s %s%u (in %s%u) @ %uhz",
mp_chmap_to_str(&channels), type, valid_bits,
type, (unsigned) wf->wBitsPerSample,
(unsigned) wf->nSamplesPerSec);
}
return buf;
}
#define waveformat_to_str(wf) waveformat_to_str_buf((char[40]){0}, 40, (wf))
static void waveformat_copy(WAVEFORMATEXTENSIBLE* dst, WAVEFORMATEX* src)
{
if (src->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
*dst = *(WAVEFORMATEXTENSIBLE *)src;
} else {
dst->Format = *src;
}
}
static bool set_ao_format(struct ao *ao, WAVEFORMATEX *wf)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
int format = format_from_waveformat(wf);
if (!format) {
MP_ERR(ao, "Unable to construct sample format from WAVEFORMAT %s\n",
waveformat_to_str(wf));
return false;
}
struct mp_chmap channels;
if (!chmap_from_waveformat(&channels, wf)) {
MP_ERR(ao, "Unable to construct channel map from WAVEFORMAT %s\n",
waveformat_to_str(wf));
return false;
}
ao->samplerate = wf->nSamplesPerSec;
ao->bps = wf->nAvgBytesPerSec;
ao->format = format;
ao->channels = channels;
waveformat_copy(&state->format, wf);
return true;
}
static bool try_format_exclusive(struct ao *ao, WAVEFORMATEXTENSIBLE *wformat)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
MP_VERBOSE(ao, "Trying %s\n", waveformat_to_str(&wformat->Format));
HRESULT hr = IAudioClient_IsFormatSupported(state->pAudioClient,
AUDCLNT_SHAREMODE_EXCLUSIVE,
&wformat->Format, NULL);
if (hr != AUDCLNT_E_UNSUPPORTED_FORMAT)
EXIT_ON_ERROR(hr);
return hr == S_OK;
exit_label:
MP_ERR(state, "Error testing exclusive format: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return false;
}
static bool search_sample_formats(struct ao *ao, WAVEFORMATEXTENSIBLE *wformat,
int samplerate, struct mp_chmap *channels)
{
// try float
int float_bits[] = {64, 32, 0};
for (int i = 0; float_bits[i]; i++) {
set_waveformat(wformat, float_bits[i], float_bits[i], true,
samplerate, channels);
if (try_format_exclusive(ao, wformat))
return true;
}
// try int
// some common bit depths / container sizes (requests welcome)
int bits[] = {32, 24, 32, 16, 0};
int valid_bits[] = {32, 24, 24, 16, 0};
for (int i = 0; bits[i] && valid_bits[i]; i++) {
set_waveformat(wformat, bits[i], valid_bits[i], false,
samplerate, channels);
if (try_format_exclusive(ao, wformat))
return true;
}
wformat->Format.wBitsPerSample = 0;
return false;
}
static bool search_samplerates(struct ao *ao, WAVEFORMATEXTENSIBLE *wformat,
struct mp_chmap *channels)
{
// try list of typical sample rates (requests welcome)
int try[] = {8000, 11025, 16000, 22050, 32000, 44100, 48000, 88200, 96000,
176400, 192000, 352800, 384000, 0};
// get a list of supported rates
int n = 0;
int supported[MP_ARRAY_SIZE(try)] = {0};
wformat->Format.wBitsPerSample = 0;
for (int i = 0; try[i]; i++) {
if (!wformat->Format.wBitsPerSample) {
if (search_sample_formats(ao, wformat, try[i], channels))
supported[n++] = try[i];
} else {
change_waveformat_samplerate(wformat, try[i]);
if (try_format_exclusive(ao, wformat))
supported[n++] = try[i];
}
}
for (int i = 0; supported[i]; i++) {
// first choose the lowest integer multiple of the sample rate
if (!(supported[i] % ao->samplerate)) {
change_waveformat_samplerate(wformat, supported[i]);
return true;
}
}
// then choose the highest supported (if any)
if (n) {
change_waveformat_samplerate(wformat, supported[n-1]);
return true;
}
// otherwise, this is probably an unsupported channel map
wformat->Format.nSamplesPerSec = 0;
return false;
}
static bool search_channels(struct ao *ao, WAVEFORMATEXTENSIBLE *wformat)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
struct mp_chmap_sel chmap_sel = {.tmp = state};
struct mp_chmap entry;
// put common layouts first so that we find sample rate/format early
char *channel_layouts[] =
{"mono", "stereo", "2.1", "4.0", "5.0", "5.1", "6.1", "7.1",
"3.0", "3.0(back)",
"quad", "quad(side)", "3.1",
"5.0(side)", "4.1",
"5.1(side)", "6.0", "6.0(front)", "hexagonal"
"6.1(back)", "6.1(front)", "7.0", "7.0(front)",
"7.1(wide)", "7.1(wide-side)", "7.1(rear)", "octagonal", NULL};
wformat->Format.nSamplesPerSec = 0;
for (int j = 0; channel_layouts[j]; j++) {
mp_chmap_from_str(&entry, bstr0(channel_layouts[j]));
if (!wformat->Format.nSamplesPerSec) {
if (search_samplerates(ao, wformat, &entry)) {
mp_chmap_sel_add_map(&chmap_sel, &entry);
MP_VERBOSE(ao, "%s is supported\n", waveformat_to_str(&wformat->Format));
}
} else {
change_waveformat_channels(wformat, &entry);
if (try_format_exclusive(ao, wformat)) {
mp_chmap_sel_add_map(&chmap_sel, &entry);
MP_VERBOSE(ao, "%s is supported\n", mp_chmap_to_str(&entry));
}
}
}
entry = ao->channels;
if (ao_chmap_sel_adjust(ao, &chmap_sel, &entry)){
change_waveformat_channels(wformat, &entry);
return true;
}
MP_ERR(ao, "No suitable audio format found\n");
return false;
}
static bool find_formats_exclusive(struct ao *ao)
{
WAVEFORMATEXTENSIBLE wformat;
set_waveformat_with_ao(&wformat, ao);
// If the format doesn't work as is, we have to manually try
// all possible formats in search_channels(). Nice API Microsoft.
if (!try_format_exclusive(ao, &wformat) && !search_channels(ao, &wformat))
return false;
if (!set_ao_format(ao, &wformat.Format))
return false;
MP_VERBOSE(ao, "Accepted as %s %s @ %dhz\n",
mp_chmap_to_str(&ao->channels),
af_fmt_to_str(ao->format), ao->samplerate);
return true;
}
static bool find_formats_shared(struct ao *ao)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
WAVEFORMATEXTENSIBLE wformat;
set_waveformat_with_ao(&wformat, ao);
MP_VERBOSE(ao, "Trying %s\n", waveformat_to_str(&wformat.Format));
WAVEFORMATEX *closestMatch;
HRESULT hr = IAudioClient_IsFormatSupported(state->pAudioClient,
AUDCLNT_SHAREMODE_SHARED,
&wformat.Format, &closestMatch);
if (hr != AUDCLNT_E_UNSUPPORTED_FORMAT)
EXIT_ON_ERROR(hr);
switch (hr) {
case S_OK:
break;
case S_FALSE:
waveformat_copy(&wformat, closestMatch);
CoTaskMemFree(closestMatch);
MP_VERBOSE(ao, "Closest match is %s\n",
waveformat_to_str(&wformat.Format));
break;
default:
hr = IAudioClient_GetMixFormat(state->pAudioClient, &closestMatch);
EXIT_ON_ERROR(hr);
waveformat_copy(&wformat, closestMatch);
MP_VERBOSE(ao, "Fallback to mix format %s\n",
waveformat_to_str(&wformat.Format));
CoTaskMemFree(closestMatch);
}
if (!set_ao_format(ao, &wformat.Format))
return false;
MP_VERBOSE(ao, "Accepted as %s %s @ %dhz\n",
mp_chmap_to_str(&ao->channels),
af_fmt_to_str(ao->format), ao->samplerate);
return true;
exit_label:
MP_ERR(state, "Error finding shared mode format: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return false;
}
static bool try_passthrough(struct ao *ao)
{
// fixme: this will only do SPDIF AC3 and doesn't bother to check
// that the resulting waveformat is actually consistent with the ao
// https://msdn.microsoft.com/en-us/library/windows/desktop/dd370811%28v=vs.85%29.aspx
// https://msdn.microsoft.com/en-us/library/windows/desktop/dd316761(v=vs.85).aspx
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
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 = KSDATAFORMAT_SUBTYPE_PCM,
};
wformat.SubFormat.Data1 = WAVE_FORMAT_DOLBY_AC3_SPDIF; // see INIT_WAVEFORMATEX_GUID macro
MP_VERBOSE(ao, "Trying passthrough for %s...\n", af_fmt_to_str(ao->format));
HRESULT hr = IAudioClient_IsFormatSupported(state->pAudioClient,
state->share_mode,
&wformat.Format, NULL);
if (!FAILED(hr)) {
state->format = wformat;
return true;
}
MP_ERR(ao, "Couldn't use passthrough\n");
return false;
}
static bool find_formats(struct ao *ao)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
if (state->opt_exclusive) {
// https://msdn.microsoft.com/en-us/library/windows/desktop/dd370811%28v=vs.85%29.aspx
// "Many audio devices support both PCM and non-PCM stream formats.
// However, the audio engine can mix only PCM streams. Thus, only
// exclusive-mode streams can have non-PCM formats.
if (AF_FORMAT_IS_IEC61937(ao->format)) {
return try_passthrough(ao);
} else {
return find_formats_exclusive(ao);
}
}
return find_formats_shared(ao);
}
static HRESULT 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 S_OK;
exit_label:
MP_ERR(state, "Error obtaining the audio device's timing: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return hr;
}
static HRESULT 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 S_OK;
exit_label:
MP_WARN(state, "Error setting audio session display name: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return S_OK; // No reason to abort initialization.
}
static HRESULT fix_format(struct ao *ao)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
HRESULT hr;
REFERENCE_TIME devicePeriod, bufferDuration, bufferPeriod;
MP_DBG(state, "IAudioClient::GetDevicePeriod\n");
hr = IAudioClient_GetDevicePeriod(state->pAudioClient,&devicePeriod, NULL);
MP_VERBOSE(state, "Device period: %.2g ms\n", (double) devicePeriod / 10000.0 );
/* integer multiple of device period close to 50ms */
bufferPeriod = bufferDuration = ceil(50.0 * 10000.0 / devicePeriod) * devicePeriod;
/* handle unsupported buffer size */
/* hopefully this shouldn't happen because of the above integer device period */
/* http://msdn.microsoft.com/en-us/library/windows/desktop/dd370875%28v=vs.85%29.aspx */
int retries=0;
reinit:
if (state->share_mode == AUDCLNT_SHAREMODE_SHARED)
bufferPeriod = 0;
MP_DBG(state, "IAudioClient::Initialize\n");
hr = IAudioClient_Initialize(state->pAudioClient,
state->share_mode,
AUDCLNT_STREAMFLAGS_EVENTCALLBACK,
bufferDuration,
bufferPeriod,
&(state->format.Format),
NULL);
/* something about buffer sizes on Win7 */
if (hr == AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED) {
if (retries > 0) {
EXIT_ON_ERROR(hr);
} else {
retries ++;
}
MP_VERBOSE(state, "IAudioClient::Initialize negotiation failed with %s (0x%"PRIx32"), used %lld * 100ns\n",
wasapi_explain_err(hr), (uint32_t) hr, bufferDuration);
IAudioClient_GetBufferSize(state->pAudioClient, &state->bufferFrameCount);
bufferPeriod = bufferDuration =
(REFERENCE_TIME) ((10000.0 * 1000 / state->format.Format.nSamplesPerSec *
state->bufferFrameCount) + 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);
MP_DBG(state, "IAudioClient::Initialize pRenderClient\n");
hr = IAudioClient_GetService(state->pAudioClient,
&IID_IAudioRenderClient,
(void **)&state->pRenderClient);
EXIT_ON_ERROR(hr);
MP_DBG(state, "IAudioClient::Initialize pAudioVolume\n");
hr = IAudioClient_GetService(state->pAudioClient,
&IID_ISimpleAudioVolume,
(void **)&state->pAudioVolume);
EXIT_ON_ERROR(hr);
MP_DBG(state, "IAudioClient::Initialize IAudioClient_SetEventHandle\n");
hr = IAudioClient_SetEventHandle(state->pAudioClient, state->hFeed);
EXIT_ON_ERROR(hr);
MP_DBG(state, "IAudioClient::Initialize IAudioClient_GetBufferSize\n");
hr = IAudioClient_GetBufferSize(state->pAudioClient,
&state->bufferFrameCount);
EXIT_ON_ERROR(hr);
ao->device_buffer = state->bufferFrameCount;
state->buffer_block_size = state->format.Format.nChannels *
state->format.Format.wBitsPerSample / 8 *
state->bufferFrameCount;
bufferDuration =
(REFERENCE_TIME) ((10000.0 * 1000 / state->format.Format.nSamplesPerSec *
state->bufferFrameCount) + 0.5);
MP_VERBOSE(state, "Buffer frame count: %"PRIu32" (%.2g ms)\n",
state->bufferFrameCount, (double) bufferDuration / 10000.0 );
hr = init_clock(state);
EXIT_ON_ERROR(hr);
hr = init_session_display(state);
EXIT_ON_ERROR(hr);
if (state->VistaBlob.hAvrt) {
state->hTask =
state->VistaBlob.pAvSetMmThreadCharacteristicsW(L"Pro Audio", &state->taskIndex);
}
MP_VERBOSE(state, "Format fixed. Using %lld byte buffer block size\n",
(long long) state->buffer_block_size);
return S_OK;
exit_label:
MP_ERR(state, "Error initializing device: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return hr;
}
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, &mp_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, &mp_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;
}
// Warning: ao and list are NULL in the "--ao=wasapi:device=help" path!
static HRESULT enumerate_with_state(struct mp_log *log, struct ao *ao,
struct ao_device_list *list,
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, eMultimedia,
&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);
}
if (ao) {
char *desc = talloc_asprintf(NULL, "%s, ID: %s%s", name, id, mark);
struct ao_device_desc e = {id, desc};
ao_device_list_add(list, ao, &e);
}
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 S_OK;
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;
}
bool wasapi_enumerate_devices(struct mp_log *log, struct ao *ao,
struct ao_device_list *list)
{
HRESULT hr;
hr = enumerate_with_state(log, ao, list, "Active devices:",
DEVICE_STATE_ACTIVE, 1);
EXIT_ON_ERROR(hr);
hr = enumerate_with_state(log, ao, list, "Unplugged devices:",
DEVICE_STATE_UNPLUGGED, 0);
EXIT_ON_ERROR(hr);
return true;
exit_label:
mp_err(log, "Error enumerating devices: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return false;
}
static HRESULT load_default_device(struct ao *ao, IMMDeviceEnumerator* pEnumerator,
IMMDevice **ppDevice)
{
HRESULT hr = IMMDeviceEnumerator_GetDefaultAudioEndpoint(pEnumerator,
eRender, eMultimedia,
ppDevice);
EXIT_ON_ERROR(hr);
char *id = get_device_id(*ppDevice);
MP_VERBOSE(ao, "Default device ID: %s\n", id);
talloc_free(id);
return S_OK;
exit_label:
MP_ERR(ao , "Error loading default device: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return hr;
}
static HRESULT find_and_load_device(struct ao *ao, IMMDeviceEnumerator* pEnumerator,
IMMDevice **ppDevice, char *search)
{
HRESULT hr;
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;
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));
CoTaskMemFree(deviceID);
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, NULL, NULL);
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;
#define UNMARSHAL(type, to, from) do { \
hr = CoGetInterfaceAndReleaseStream((from), &(type), (void **)&(to)); \
(from) = NULL; \
EXIT_ON_ERROR(hr); \
} while (0)
UNMARSHAL(IID_ISimpleAudioVolume, state->pAudioVolumeProxy, state->sAudioVolume);
UNMARSHAL(IID_IAudioEndpointVolume, state->pEndpointVolumeProxy, state->sEndpointVolume);
UNMARSHAL(IID_IAudioSessionControl, state->pSessionControlProxy, state->sSessionControl);
#undef UNMARSHAL
return S_OK;
exit_label:
MP_ERR(state, "Error reading COM proxy: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return hr;
}
void wasapi_release_proxies(wasapi_state *state) {
SAFE_RELEASE(state->pAudioVolumeProxy, IUnknown_Release(state->pAudioVolumeProxy));
SAFE_RELEASE(state->pEndpointVolumeProxy, IUnknown_Release(state->pEndpointVolumeProxy));
SAFE_RELEASE(state->pSessionControlProxy, IUnknown_Release(state->pSessionControlProxy));
}
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_ISimpleAudioVolume, state->sAudioVolume, state->pAudioVolume);
MARSHAL(IID_IAudioEndpointVolume, state->sEndpointVolume, state->pEndpointVolume);
MARSHAL(IID_IAudioSessionControl, state->sSessionControl, state->pSessionControl);
return S_OK;
exit_label:
MP_ERR(state, "Error creating COM proxy: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return hr;
}
static void destroy_proxies(struct wasapi_state *state) {
SAFE_RELEASE(state->sAudioVolume, IUnknown_Release(state->sAudioVolume));
SAFE_RELEASE(state->sEndpointVolume, IUnknown_Release(state->sEndpointVolume));
SAFE_RELEASE(state->sSessionControl, IUnknown_Release(state->sSessionControl));
}
void wasapi_dispatch(void)
{
/* dispatch any possible pending messages */
MSG msg;
while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
DispatchMessage(&msg);
}
HRESULT wasapi_thread_init(struct ao *ao)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
HRESULT hr;
MP_DBG(ao, "Init wasapi thread\n");
int64_t retry_wait = 1;
retry:
state->initial_volume = -1.0;
hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL,
&IID_IMMDeviceEnumerator, (void **)&state->pEnumerator);
EXIT_ON_ERROR(hr);
char *device = state->opt_device;
if (!device || !device[0])
device = ao->device;
if (!device || !device[0]) {
hr = load_default_device(ao, state->pEnumerator, &state->pDevice);
} else {
hr = find_and_load_device(ao, state->pEnumerator, &state->pDevice, device);
}
EXIT_ON_ERROR(hr);
char *name = get_device_name(state->pDevice);
MP_VERBOSE(ao, "Device loaded: %s\n", name);
talloc_free(name);
MP_DBG(ao, "Activating pAudioClient interface\n");
hr = IMMDeviceActivator_Activate(state->pDevice, &IID_IAudioClient,
CLSCTX_ALL, NULL, (void **)&state->pAudioClient);
EXIT_ON_ERROR(hr);
MP_DBG(ao, "Activating pEndpointVolume interface\n");
hr = IMMDeviceActivator_Activate(state->pDevice, &IID_IAudioEndpointVolume,
CLSCTX_ALL, NULL,
(void **)&state->pEndpointVolume);
EXIT_ON_ERROR(hr);
MP_DBG(ao, "Query hardware volume support\n");
hr = IAudioEndpointVolume_QueryHardwareSupport(state->pEndpointVolume,
&state->vol_hw_support);
if (hr != S_OK) {
MP_WARN(ao, "Error querying hardware volume control: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
}
MP_DBG(ao, "Probing formats\n");
if (!find_formats(ao)) {
hr = E_FAIL;
EXIT_ON_ERROR(hr);
}
MP_DBG(ao, "Fixing format\n");
hr = fix_format(ao);
if ((hr == AUDCLNT_E_DEVICE_IN_USE ||
hr == AUDCLNT_E_DEVICE_INVALIDATED) &&
retry_wait <= 8)
{
wasapi_thread_uninit(ao);
MP_WARN(ao, "Retrying in %"PRId64" us\n", retry_wait);
mp_sleep_us(retry_wait);
retry_wait *= 2;
goto retry;
}
EXIT_ON_ERROR(hr);
MP_DBG(ao, "Creating proxies\n");
hr = create_proxies(state);
EXIT_ON_ERROR(hr);
MP_DBG(ao, "Read volume levels\n");
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;
wasapi_change_init(ao, false);
MP_DBG(ao, "Init wasapi thread done\n");
return S_OK;
exit_label:
MP_ERR(state, "Error setting up audio thread: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return hr;
}
HRESULT wasapi_hotplug_init(struct ao *ao)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
HRESULT hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL,
&IID_IMMDeviceEnumerator, (void **)&state->pEnumerator);
EXIT_ON_ERROR(hr);
hr = wasapi_change_init(ao, true);
EXIT_ON_ERROR(hr);
return S_OK;
exit_label:
MP_ERR(state, "Error setting up audio hotplug: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return hr;
}
void wasapi_hotplug_uninit(struct ao *ao)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
wasapi_change_uninit(ao);
SAFE_RELEASE(state->pEnumerator, IMMDeviceEnumerator_Release(state->pEnumerator));
}
void wasapi_thread_uninit(struct ao *ao)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
wasapi_dispatch();
if (state->pAudioClient)
IAudioClient_Stop(state->pAudioClient);
wasapi_change_uninit(ao);
if (state->opt_exclusive && state->pEndpointVolume && state->initial_volume > 0 ) {
IAudioEndpointVolume_SetMasterVolumeLevelScalar(state->pEndpointVolume,
state->initial_volume, NULL);
}
destroy_proxies(state);
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));
SAFE_RELEASE(state->pEnumerator, IMMDeviceEnumerator_Release(state->pEnumerator));
if (state->hTask)
state->VistaBlob.pAvRevertMmThreadCharacteristics(state->hTask);
MP_DBG(ao, "Thread uninit done\n");
}
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