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openal-soft/Alc/backends/mmdevapi.c
Chris Robinson 1fb9311d82 Lock the device before calling aluHandleDisconnect 
PulseAudio causes an assert if being relocked inside a callback on the worker
thread, where aluHandleDisconnect is called. We can assume it's already locked
there, so just make sure the device is locked before being calling it.
2012-12-02 11:30:23 -08:00

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/**
* OpenAL cross platform audio library
* Copyright (C) 2011 by authors.
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
* Or go to http://www.gnu.org/copyleft/lgpl.html
*/
#include "config.h"
#define COBJMACROS
#include <stdlib.h>
#include <stdio.h>
#include <memory.h>
#include <mmdeviceapi.h>
#include <audioclient.h>
#include <cguid.h>
#include <devpropdef.h>
#include <mmreg.h>
#include <propsys.h>
#include <propkey.h>
#include <devpkey.h>
#ifndef _WAVEFORMATEXTENSIBLE_
#include <ks.h>
#include <ksmedia.h>
#endif
#include "alMain.h"
#include "alu.h"
DEFINE_GUID(KSDATAFORMAT_SUBTYPE_PCM, 0x00000001, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);
DEFINE_GUID(KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, 0x00000003, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);
DEFINE_DEVPROPKEY(DEVPKEY_Device_FriendlyName, 0xa45c254e, 0xdf1c, 0x4efd, 0x80,0x20, 0x67,0xd1,0x46,0xa8,0x50,0xe0, 14);
#define MONO SPEAKER_FRONT_CENTER
#define STEREO (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT)
#define QUAD (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT)
#define X5DOT1 (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT)
#define X5DOT1SIDE (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_SIDE_LEFT|SPEAKER_SIDE_RIGHT)
#define X6DOT1 (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_BACK_CENTER|SPEAKER_SIDE_LEFT|SPEAKER_SIDE_RIGHT)
#define X7DOT1 (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT|SPEAKER_SIDE_LEFT|SPEAKER_SIDE_RIGHT)
typedef struct {
WCHAR *devid;
IMMDevice *mmdev;
IAudioClient *client;
IAudioRenderClient *render;
HANDLE NotifyEvent;
HANDLE MsgEvent;
volatile UINT32 Padding;
volatile int killNow;
ALvoid *thread;
} MMDevApiData;
typedef struct {
ALCchar *name;
WCHAR *devid;
} DevMap;
static DevMap *PlaybackDeviceList;
static ALuint NumPlaybackDevices;
static DevMap *CaptureDeviceList;
static ALuint NumCaptureDevices;
static HANDLE ThreadHdl;
static DWORD ThreadID;
typedef struct {
HANDLE FinishedEvt;
HRESULT result;
} ThreadRequest;
#define WM_USER_OpenDevice (WM_USER+0)
#define WM_USER_ResetDevice (WM_USER+1)
#define WM_USER_StartDevice (WM_USER+2)
#define WM_USER_StopDevice (WM_USER+3)
#define WM_USER_CloseDevice (WM_USER+4)
#define WM_USER_Enumerate (WM_USER+5)
static HRESULT WaitForResponse(ThreadRequest *req)
{
if(WaitForSingleObject(req->FinishedEvt, INFINITE) == WAIT_OBJECT_0)
return req->result;
ERR("Message response error: %lu\n", GetLastError());
return E_FAIL;
}
static ALCchar *get_device_name(IMMDevice *device)
{
ALCchar *name = NULL;
IPropertyStore *ps;
PROPVARIANT pvname;
HRESULT hr;
int len;
hr = IMMDevice_OpenPropertyStore(device, STGM_READ, &ps);
if(FAILED(hr))
{
WARN("OpenPropertyStore failed: 0x%08lx\n", hr);
return calloc(1, 1);
}
PropVariantInit(&pvname);
hr = IPropertyStore_GetValue(ps, (const PROPERTYKEY*)&DEVPKEY_Device_FriendlyName, &pvname);
if(FAILED(hr))
{
WARN("GetValue failed: 0x%08lx\n", hr);
name = calloc(1, 1);
}
else
{
if((len=WideCharToMultiByte(CP_ACP, 0, pvname.pwszVal, -1, NULL, 0, NULL, NULL)) > 0)
{
name = calloc(1, len);
WideCharToMultiByte(CP_ACP, 0, pvname.pwszVal, -1, name, len, NULL, NULL);
}
}
PropVariantClear(&pvname);
IPropertyStore_Release(ps);
return name;
}
static void add_device(IMMDevice *device, DevMap *devmap)
{
LPWSTR devid;
HRESULT hr;
hr = IMMDevice_GetId(device, &devid);
if(SUCCEEDED(hr))
{
devmap->devid = strdupW(devid);
devmap->name = get_device_name(device);
TRACE("Got device \"%s\", \"%ls\"\n", devmap->name, devmap->devid);
CoTaskMemFree(devid);
}
}
static DevMap *ProbeDevices(IMMDeviceEnumerator *devenum, EDataFlow flowdir, ALuint *numdevs)
{
IMMDeviceCollection *coll;
IMMDevice *defdev = NULL;
DevMap *devlist = NULL;
HRESULT hr;
UINT count;
UINT idx;
UINT i;
hr = IMMDeviceEnumerator_EnumAudioEndpoints(devenum, flowdir, DEVICE_STATE_ACTIVE, &coll);
if(FAILED(hr))
{
ERR("Failed to enumerate audio endpoints: 0x%08lx\n", hr);
return NULL;
}
idx = count = 0;
hr = IMMDeviceCollection_GetCount(coll, &count);
if(SUCCEEDED(hr) && count > 0)
{
devlist = calloc(count, sizeof(*devlist));
if(!devlist)
{
IMMDeviceCollection_Release(coll);
return NULL;
}
hr = IMMDeviceEnumerator_GetDefaultAudioEndpoint(devenum, flowdir,
eMultimedia, &defdev);
}
if(SUCCEEDED(hr) && defdev != NULL)
add_device(defdev, &devlist[idx++]);
for(i = 0;i < count && idx < count;++i)
{
IMMDevice *device;
if(FAILED(IMMDeviceCollection_Item(coll, i, &device)))
continue;
if(device != defdev)
add_device(device, &devlist[idx++]);
IMMDevice_Release(device);
}
if(defdev) IMMDevice_Release(defdev);
IMMDeviceCollection_Release(coll);
*numdevs = idx;
return devlist;
}
static ALuint MMDevApiProc(ALvoid *ptr)
{
ALCdevice *device = ptr;
MMDevApiData *data = device->ExtraData;
UINT32 buffer_len, written;
ALuint update_size, len;
BYTE *buffer;
HRESULT hr;
hr = CoInitialize(NULL);
if(FAILED(hr))
{
ERR("CoInitialize(NULL) failed: 0x%08lx\n", hr);
ALCdevice_Lock(device);
aluHandleDisconnect(device);
ALCdevice_Unlock(device);
return 0;
}
SetRTPriority();
update_size = device->UpdateSize;
buffer_len = update_size * device->NumUpdates;
while(!data->killNow)
{
hr = IAudioClient_GetCurrentPadding(data->client, &written);
if(FAILED(hr))
{
ERR("Failed to get padding: 0x%08lx\n", hr);
ALCdevice_Lock(device);
aluHandleDisconnect(device);
ALCdevice_Unlock(device);
break;
}
data->Padding = written;
len = buffer_len - written;
if(len < update_size)
{
DWORD res;
res = WaitForSingleObjectEx(data->NotifyEvent, 2000, FALSE);
if(res != WAIT_OBJECT_0)
ERR("WaitForSingleObjectEx error: 0x%lx\n", res);
continue;
}
len -= len%update_size;
hr = IAudioRenderClient_GetBuffer(data->render, len, &buffer);
if(SUCCEEDED(hr))
{
ALCdevice_Lock(device);
aluMixData(device, buffer, len);
data->Padding = written + len;
ALCdevice_Unlock(device);
hr = IAudioRenderClient_ReleaseBuffer(data->render, len, 0);
}
if(FAILED(hr))
{
ERR("Failed to buffer data: 0x%08lx\n", hr);
ALCdevice_Lock(device);
aluHandleDisconnect(device);
ALCdevice_Unlock(device);
break;
}
}
data->Padding = 0;
CoUninitialize();
return 0;
}
static ALCboolean MakeExtensible(WAVEFORMATEXTENSIBLE *out, const WAVEFORMATEX *in)
{
memset(out, 0, sizeof(*out));
if(in->wFormatTag == WAVE_FORMAT_EXTENSIBLE)
*out = *(const WAVEFORMATEXTENSIBLE*)in;
else if(in->wFormatTag == WAVE_FORMAT_PCM)
{
out->Format = *in;
out->Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
out->Format.cbSize = sizeof(*out) - sizeof(*in);
if(out->Format.nChannels == 1)
out->dwChannelMask = MONO;
else if(out->Format.nChannels == 2)
out->dwChannelMask = STEREO;
else
ERR("Unhandled PCM channel count: %d\n", out->Format.nChannels);
out->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
}
else if(in->wFormatTag == WAVE_FORMAT_IEEE_FLOAT)
{
out->Format = *in;
out->Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
out->Format.cbSize = sizeof(*out) - sizeof(*in);
if(out->Format.nChannels == 1)
out->dwChannelMask = MONO;
else if(out->Format.nChannels == 2)
out->dwChannelMask = STEREO;
else
ERR("Unhandled IEEE float channel count: %d\n", out->Format.nChannels);
out->SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
}
else
{
ERR("Unhandled format tag: 0x%04x\n", in->wFormatTag);
return ALC_FALSE;
}
return ALC_TRUE;
}
static HRESULT DoReset(ALCdevice *device)
{
MMDevApiData *data = device->ExtraData;
WAVEFORMATEXTENSIBLE OutputType;
WAVEFORMATEX *wfx = NULL;
REFERENCE_TIME min_per, buf_time;
UINT32 buffer_len, min_len;
HRESULT hr;
hr = IAudioClient_GetMixFormat(data->client, &wfx);
if(FAILED(hr))
{
ERR("Failed to get mix format: 0x%08lx\n", hr);
return hr;
}
if(!MakeExtensible(&OutputType, wfx))
{
CoTaskMemFree(wfx);
return E_FAIL;
}
CoTaskMemFree(wfx);
wfx = NULL;
buf_time = ((REFERENCE_TIME)device->UpdateSize*device->NumUpdates*10000000 +
device->Frequency-1) / device->Frequency;
if(!(device->Flags&DEVICE_FREQUENCY_REQUEST))
device->Frequency = OutputType.Format.nSamplesPerSec;
if(!(device->Flags&DEVICE_CHANNELS_REQUEST))
{
if(OutputType.Format.nChannels == 1 && OutputType.dwChannelMask == MONO)
device->FmtChans = DevFmtMono;
else if(OutputType.Format.nChannels == 2 && OutputType.dwChannelMask == STEREO)
device->FmtChans = DevFmtStereo;
else if(OutputType.Format.nChannels == 4 && OutputType.dwChannelMask == QUAD)
device->FmtChans = DevFmtQuad;
else if(OutputType.Format.nChannels == 6 && OutputType.dwChannelMask == X5DOT1)
device->FmtChans = DevFmtX51;
else if(OutputType.Format.nChannels == 6 && OutputType.dwChannelMask == X5DOT1SIDE)
device->FmtChans = DevFmtX51Side;
else if(OutputType.Format.nChannels == 7 && OutputType.dwChannelMask == X6DOT1)
device->FmtChans = DevFmtX61;
else if(OutputType.Format.nChannels == 8 && OutputType.dwChannelMask == X7DOT1)
device->FmtChans = DevFmtX71;
else
ERR("Unhandled channel config: %d -- 0x%08lx\n", OutputType.Format.nChannels, OutputType.dwChannelMask);
}
switch(device->FmtChans)
{
case DevFmtMono:
OutputType.Format.nChannels = 1;
OutputType.dwChannelMask = MONO;
break;
case DevFmtStereo:
OutputType.Format.nChannels = 2;
OutputType.dwChannelMask = STEREO;
break;
case DevFmtQuad:
OutputType.Format.nChannels = 4;
OutputType.dwChannelMask = QUAD;
break;
case DevFmtX51:
OutputType.Format.nChannels = 6;
OutputType.dwChannelMask = X5DOT1;
break;
case DevFmtX51Side:
OutputType.Format.nChannels = 6;
OutputType.dwChannelMask = X5DOT1SIDE;
break;
case DevFmtX61:
OutputType.Format.nChannels = 7;
OutputType.dwChannelMask = X6DOT1;
break;
case DevFmtX71:
OutputType.Format.nChannels = 8;
OutputType.dwChannelMask = X7DOT1;
break;
}
switch(device->FmtType)
{
case DevFmtByte:
device->FmtType = DevFmtUByte;
/* fall-through */
case DevFmtUByte:
OutputType.Format.wBitsPerSample = 8;
OutputType.Samples.wValidBitsPerSample = 8;
OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
break;
case DevFmtUShort:
device->FmtType = DevFmtShort;
/* fall-through */
case DevFmtShort:
OutputType.Format.wBitsPerSample = 16;
OutputType.Samples.wValidBitsPerSample = 16;
OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
break;
case DevFmtUInt:
device->FmtType = DevFmtInt;
/* fall-through */
case DevFmtInt:
OutputType.Format.wBitsPerSample = 32;
OutputType.Samples.wValidBitsPerSample = 32;
OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
break;
case DevFmtFloat:
OutputType.Format.wBitsPerSample = 32;
OutputType.Samples.wValidBitsPerSample = 32;
OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
break;
}
OutputType.Format.nSamplesPerSec = device->Frequency;
OutputType.Format.nBlockAlign = OutputType.Format.nChannels *
OutputType.Format.wBitsPerSample / 8;
OutputType.Format.nAvgBytesPerSec = OutputType.Format.nSamplesPerSec *
OutputType.Format.nBlockAlign;
hr = IAudioClient_IsFormatSupported(data->client, AUDCLNT_SHAREMODE_SHARED, &OutputType.Format, &wfx);
if(FAILED(hr))
{
ERR("Failed to check format support: 0x%08lx\n", hr);
hr = IAudioClient_GetMixFormat(data->client, &wfx);
}
if(FAILED(hr))
{
ERR("Failed to find a supported format: 0x%08lx\n", hr);
return hr;
}
if(wfx != NULL)
{
if(!MakeExtensible(&OutputType, wfx))
{
CoTaskMemFree(wfx);
return E_FAIL;
}
CoTaskMemFree(wfx);
wfx = NULL;
device->Frequency = OutputType.Format.nSamplesPerSec;
if(OutputType.Format.nChannels == 1 && OutputType.dwChannelMask == MONO)
device->FmtChans = DevFmtMono;
else if(OutputType.Format.nChannels == 2 && OutputType.dwChannelMask == STEREO)
device->FmtChans = DevFmtStereo;
else if(OutputType.Format.nChannels == 4 && OutputType.dwChannelMask == QUAD)
device->FmtChans = DevFmtQuad;
else if(OutputType.Format.nChannels == 6 && OutputType.dwChannelMask == X5DOT1)
device->FmtChans = DevFmtX51;
else if(OutputType.Format.nChannels == 6 && OutputType.dwChannelMask == X5DOT1SIDE)
device->FmtChans = DevFmtX51Side;
else if(OutputType.Format.nChannels == 7 && OutputType.dwChannelMask == X6DOT1)
device->FmtChans = DevFmtX61;
else if(OutputType.Format.nChannels == 8 && OutputType.dwChannelMask == X7DOT1)
device->FmtChans = DevFmtX71;
else
{
ERR("Unhandled extensible channels: %d -- 0x%08lx\n", OutputType.Format.nChannels, OutputType.dwChannelMask);
device->FmtChans = DevFmtStereo;
OutputType.Format.nChannels = 2;
OutputType.dwChannelMask = STEREO;
}
if(IsEqualGUID(&OutputType.SubFormat, &KSDATAFORMAT_SUBTYPE_PCM))
{
if(OutputType.Format.wBitsPerSample == 8)
device->FmtType = DevFmtUByte;
else if(OutputType.Format.wBitsPerSample == 16)
device->FmtType = DevFmtShort;
else if(OutputType.Format.wBitsPerSample == 32)
device->FmtType = DevFmtInt;
else
{
device->FmtType = DevFmtShort;
OutputType.Format.wBitsPerSample = 16;
}
}
else if(IsEqualGUID(&OutputType.SubFormat, &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT))
{
device->FmtType = DevFmtFloat;
OutputType.Format.wBitsPerSample = 32;
}
else
{
ERR("Unhandled format sub-type\n");
device->FmtType = DevFmtShort;
OutputType.Format.wBitsPerSample = 16;
OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
}
OutputType.Samples.wValidBitsPerSample = OutputType.Format.wBitsPerSample;
}
SetDefaultWFXChannelOrder(device);
hr = IAudioClient_Initialize(data->client, AUDCLNT_SHAREMODE_SHARED,
AUDCLNT_STREAMFLAGS_EVENTCALLBACK,
buf_time, 0, &OutputType.Format, NULL);
if(FAILED(hr))
{
ERR("Failed to initialize audio client: 0x%08lx\n", hr);
return hr;
}
hr = IAudioClient_GetDevicePeriod(data->client, &min_per, NULL);
if(SUCCEEDED(hr))
{
min_len = (UINT32)((min_per*device->Frequency + 10000000-1) / 10000000);
/* Find the nearest multiple of the period size to the update size */
if(min_len < device->UpdateSize)
min_len *= (device->UpdateSize + min_len/2)/min_len;
hr = IAudioClient_GetBufferSize(data->client, &buffer_len);
}
if(FAILED(hr))
{
ERR("Failed to get audio buffer info: 0x%08lx\n", hr);
return hr;
}
device->UpdateSize = min_len;
device->NumUpdates = buffer_len / device->UpdateSize;
if(device->NumUpdates <= 1)
{
ERR("Audio client returned buffer_len < period*2; expect break up\n");
device->NumUpdates = 2;
device->UpdateSize = buffer_len / device->NumUpdates;
}
return hr;
}
static DWORD CALLBACK MMDevApiMsgProc(void *ptr)
{
ThreadRequest *req = ptr;
IMMDeviceEnumerator *Enumerator;
ALuint deviceCount = 0;
MMDevApiData *data;
ALCdevice *device;
HRESULT hr, cohr;
MSG msg;
TRACE("Starting message thread\n");
cohr = CoInitialize(NULL);
if(FAILED(cohr))
{
WARN("Failed to initialize COM: 0x%08lx\n", cohr);
req->result = cohr;
SetEvent(req->FinishedEvt);
return 0;
}
hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_INPROC_SERVER, &IID_IMMDeviceEnumerator, &ptr);
if(FAILED(hr))
{
WARN("Failed to create IMMDeviceEnumerator instance: 0x%08lx\n", hr);
CoUninitialize();
req->result = hr;
SetEvent(req->FinishedEvt);
return 0;
}
Enumerator = ptr;
IMMDeviceEnumerator_Release(Enumerator);
Enumerator = NULL;
CoUninitialize();
req->result = S_OK;
SetEvent(req->FinishedEvt);
TRACE("Starting message loop\n");
while(GetMessage(&msg, NULL, 0, 0))
{
TRACE("Got message %u\n", msg.message);
switch(msg.message)
{
case WM_USER_OpenDevice:
req = (ThreadRequest*)msg.wParam;
device = (ALCdevice*)msg.lParam;
data = device->ExtraData;
hr = cohr = S_OK;
if(++deviceCount == 1)
hr = cohr = CoInitialize(NULL);
if(SUCCEEDED(hr))
hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_INPROC_SERVER, &IID_IMMDeviceEnumerator, &ptr);
if(SUCCEEDED(hr))
{
Enumerator = ptr;
if(!data->devid)
hr = IMMDeviceEnumerator_GetDefaultAudioEndpoint(Enumerator, eRender, eMultimedia, &data->mmdev);
else
hr = IMMDeviceEnumerator_GetDevice(Enumerator, data->devid, &data->mmdev);
IMMDeviceEnumerator_Release(Enumerator);
Enumerator = NULL;
}
if(SUCCEEDED(hr))
hr = IMMDevice_Activate(data->mmdev, &IID_IAudioClient, CLSCTX_INPROC_SERVER, NULL, &ptr);
if(SUCCEEDED(hr))
{
data->client = ptr;
device->DeviceName = get_device_name(data->mmdev);
}
if(FAILED(hr))
{
if(data->mmdev)
IMMDevice_Release(data->mmdev);
data->mmdev = NULL;
if(--deviceCount == 0 && SUCCEEDED(cohr))
CoUninitialize();
}
req->result = hr;
SetEvent(req->FinishedEvt);
continue;
case WM_USER_ResetDevice:
req = (ThreadRequest*)msg.wParam;
device = (ALCdevice*)msg.lParam;
req->result = DoReset(device);
SetEvent(req->FinishedEvt);
continue;
case WM_USER_StartDevice:
req = (ThreadRequest*)msg.wParam;
device = (ALCdevice*)msg.lParam;
data = device->ExtraData;
ResetEvent(data->NotifyEvent);
hr = IAudioClient_SetEventHandle(data->client, data->NotifyEvent);
if(FAILED(hr))
ERR("Failed to set event handle: 0x%08lx\n", hr);
else
{
hr = IAudioClient_Start(data->client);
if(FAILED(hr))
ERR("Failed to start audio client: 0x%08lx\n", hr);
}
if(SUCCEEDED(hr))
hr = IAudioClient_GetService(data->client, &IID_IAudioRenderClient, &ptr);
if(SUCCEEDED(hr))
{
data->render = ptr;
data->thread = StartThread(MMDevApiProc, device);
if(!data->thread)
{
if(data->render)
IAudioRenderClient_Release(data->render);
data->render = NULL;
IAudioClient_Stop(data->client);
ERR("Failed to start thread\n");
hr = E_FAIL;
}
}
req->result = hr;
SetEvent(req->FinishedEvt);
continue;
case WM_USER_StopDevice:
req = (ThreadRequest*)msg.wParam;
device = (ALCdevice*)msg.lParam;
data = device->ExtraData;
if(data->thread)
{
data->killNow = 1;
StopThread(data->thread);
data->thread = NULL;
data->killNow = 0;
IAudioRenderClient_Release(data->render);
data->render = NULL;
IAudioClient_Stop(data->client);
}
req->result = S_OK;
SetEvent(req->FinishedEvt);
continue;
case WM_USER_CloseDevice:
req = (ThreadRequest*)msg.wParam;
device = (ALCdevice*)msg.lParam;
data = device->ExtraData;
IAudioClient_Release(data->client);
data->client = NULL;
IMMDevice_Release(data->mmdev);
data->mmdev = NULL;
if(--deviceCount == 0)
CoUninitialize();
req->result = S_OK;
SetEvent(req->FinishedEvt);
continue;
case WM_USER_Enumerate:
req = (ThreadRequest*)msg.wParam;
hr = cohr = S_OK;
if(++deviceCount == 1)
hr = cohr = CoInitialize(NULL);
if(SUCCEEDED(hr))
hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_INPROC_SERVER, &IID_IMMDeviceEnumerator, &ptr);
if(SUCCEEDED(hr))
{
EDataFlow flowdir;
DevMap **devlist;
ALuint *numdevs;
ALuint i;
Enumerator = ptr;
if(msg.lParam == CAPTURE_DEVICE_PROBE)
{
flowdir = eCapture;
devlist = &CaptureDeviceList;
numdevs = &NumCaptureDevices;
}
else
{
flowdir = eRender;
devlist = &PlaybackDeviceList;
numdevs = &NumPlaybackDevices;
}
for(i = 0;i < *numdevs;i++)
{
free((*devlist)[i].name);
free((*devlist)[i].devid);
}
free(*devlist);
*devlist = NULL;
*numdevs = 0;
*devlist = ProbeDevices(Enumerator, flowdir, numdevs);
IMMDeviceEnumerator_Release(Enumerator);
Enumerator = NULL;
}
if(--deviceCount == 0 && SUCCEEDED(cohr))
CoUninitialize();
req->result = S_OK;
SetEvent(req->FinishedEvt);
continue;
default:
ERR("Unexpected message: %u\n", msg.message);
continue;
}
}
TRACE("Message loop finished\n");
return 0;
}
static BOOL MMDevApiLoad(void)
{
static HRESULT InitResult;
if(!ThreadHdl)
{
ThreadRequest req;
InitResult = E_FAIL;
req.FinishedEvt = CreateEvent(NULL, FALSE, FALSE, NULL);
if(req.FinishedEvt == NULL)
ERR("Failed to create event: %lu\n", GetLastError());
else
{
ThreadHdl = CreateThread(NULL, 0, MMDevApiMsgProc, &req, 0, &ThreadID);
if(ThreadHdl != NULL)
InitResult = WaitForResponse(&req);
CloseHandle(req.FinishedEvt);
}
}
return SUCCEEDED(InitResult);
}
static ALCenum MMDevApiOpenPlayback(ALCdevice *device, const ALCchar *deviceName)
{
MMDevApiData *data = NULL;
HRESULT hr;
//Initialise requested device
data = calloc(1, sizeof(MMDevApiData));
if(!data)
return ALC_OUT_OF_MEMORY;
device->ExtraData = data;
hr = S_OK;
data->NotifyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
data->MsgEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
if(data->NotifyEvent == NULL || data->MsgEvent == NULL)
hr = E_FAIL;
if(SUCCEEDED(hr))
{
if(deviceName)
{
ALuint i;
if(!PlaybackDeviceList)
{
ThreadRequest req = { data->MsgEvent, 0 };
if(PostThreadMessage(ThreadID, WM_USER_Enumerate, (WPARAM)&req, ALL_DEVICE_PROBE))
(void)WaitForResponse(&req);
}
hr = E_FAIL;
for(i = 0;i < NumPlaybackDevices;i++)
{
if(strcmp(deviceName, PlaybackDeviceList[i].name) == 0)
{
data->devid = strdupW(PlaybackDeviceList[i].devid);
hr = S_OK;
break;
}
}
}
}
if(SUCCEEDED(hr))
{
ThreadRequest req = { data->MsgEvent, 0 };
hr = E_FAIL;
if(PostThreadMessage(ThreadID, WM_USER_OpenDevice, (WPARAM)&req, (LPARAM)device))
hr = WaitForResponse(&req);
}
if(FAILED(hr))
{
if(data->NotifyEvent != NULL)
CloseHandle(data->NotifyEvent);
data->NotifyEvent = NULL;
if(data->MsgEvent != NULL)
CloseHandle(data->MsgEvent);
data->MsgEvent = NULL;
free(data);
device->ExtraData = NULL;
ERR("Device init failed: 0x%08lx\n", hr);
return ALC_INVALID_VALUE;
}
return ALC_NO_ERROR;
}
static void MMDevApiClosePlayback(ALCdevice *device)
{
MMDevApiData *data = device->ExtraData;
ThreadRequest req = { data->MsgEvent, 0 };
if(PostThreadMessage(ThreadID, WM_USER_CloseDevice, (WPARAM)&req, (LPARAM)device))
(void)WaitForResponse(&req);
CloseHandle(data->MsgEvent);
data->MsgEvent = NULL;
CloseHandle(data->NotifyEvent);
data->NotifyEvent = NULL;
free(data->devid);
data->devid = NULL;
free(data);
device->ExtraData = NULL;
}
static ALCboolean MMDevApiResetPlayback(ALCdevice *device)
{
MMDevApiData *data = device->ExtraData;
ThreadRequest req = { data->MsgEvent, 0 };
HRESULT hr = E_FAIL;
if(PostThreadMessage(ThreadID, WM_USER_ResetDevice, (WPARAM)&req, (LPARAM)device))
hr = WaitForResponse(&req);
return SUCCEEDED(hr) ? ALC_TRUE : ALC_FALSE;
}
static ALCboolean MMDevApiStartPlayback(ALCdevice *device)
{
MMDevApiData *data = device->ExtraData;
ThreadRequest req = { data->MsgEvent, 0 };
HRESULT hr = E_FAIL;
if(PostThreadMessage(ThreadID, WM_USER_StartDevice, (WPARAM)&req, (LPARAM)device))
hr = WaitForResponse(&req);
return SUCCEEDED(hr) ? ALC_TRUE : ALC_FALSE;
}
static void MMDevApiStopPlayback(ALCdevice *device)
{
MMDevApiData *data = device->ExtraData;
ThreadRequest req = { data->MsgEvent, 0 };
if(PostThreadMessage(ThreadID, WM_USER_StopDevice, (WPARAM)&req, (LPARAM)device))
(void)WaitForResponse(&req);
}
static ALint64 MMDevApiGetLatency(ALCdevice *device)
{
MMDevApiData *data = device->ExtraData;
return (ALint64)data->Padding * 1000000000 / device->Frequency;
}
static const BackendFuncs MMDevApiFuncs = {
MMDevApiOpenPlayback,
MMDevApiClosePlayback,
MMDevApiResetPlayback,
MMDevApiStartPlayback,
MMDevApiStopPlayback,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
ALCdevice_LockDefault,
ALCdevice_UnlockDefault,
MMDevApiGetLatency
};
ALCboolean alcMMDevApiInit(BackendFuncs *FuncList)
{
if(!MMDevApiLoad())
return ALC_FALSE;
*FuncList = MMDevApiFuncs;
return ALC_TRUE;
}
void alcMMDevApiDeinit(void)
{
ALuint i;
for(i = 0;i < NumPlaybackDevices;i++)
{
free(PlaybackDeviceList[i].name);
free(PlaybackDeviceList[i].devid);
}
free(PlaybackDeviceList);
PlaybackDeviceList = NULL;
NumPlaybackDevices = 0;
for(i = 0;i < NumCaptureDevices;i++)
{
free(CaptureDeviceList[i].name);
free(CaptureDeviceList[i].devid);
}
free(CaptureDeviceList);
CaptureDeviceList = NULL;
NumCaptureDevices = 0;
if(ThreadHdl)
{
TRACE("Sending WM_QUIT to Thread %04lx\n", ThreadID);
PostThreadMessage(ThreadID, WM_QUIT, 0, 0);
CloseHandle(ThreadHdl);
ThreadHdl = NULL;
}
}
void alcMMDevApiProbe(enum DevProbe type)
{
ThreadRequest req = { NULL, 0 };
HRESULT hr = E_FAIL;
switch(type)
{
case ALL_DEVICE_PROBE:
req.FinishedEvt = CreateEvent(NULL, FALSE, FALSE, NULL);
if(req.FinishedEvt == NULL)
ERR("Failed to create event: %lu\n", GetLastError());
else if(PostThreadMessage(ThreadID, WM_USER_Enumerate, (WPARAM)&req, type))
hr = WaitForResponse(&req);
if(SUCCEEDED(hr))
{
ALuint i;
for(i = 0;i < NumPlaybackDevices;i++)
{
if(PlaybackDeviceList[i].name)
AppendAllDevicesList(PlaybackDeviceList[i].name);
}
}
break;
case CAPTURE_DEVICE_PROBE:
break;
}
if(req.FinishedEvt != NULL)
CloseHandle(req.FinishedEvt);
req.FinishedEvt = NULL;
}
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