2 * OpenAL cross platform audio library
3 * Copyright (C) 1999-2007 by authors.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
18 * Or go to http://www.gnu.org/copyleft/lgpl.html
23 #define _WIN32_WINNT 0x0500
31 #ifndef _WAVEFORMATEXTENSIBLE_
40 #ifndef DSSPEAKER_5POINT1
41 #define DSSPEAKER_5POINT1 6
43 #ifndef DSSPEAKER_7POINT1
44 #define DSSPEAKER_7POINT1 7
47 DEFINE_GUID(KSDATAFORMAT_SUBTYPE_PCM
, 0x00000001, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);
48 DEFINE_GUID(KSDATAFORMAT_SUBTYPE_IEEE_FLOAT
, 0x00000003, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);
50 static void *ds_handle
;
51 static HRESULT (WINAPI
*pDirectSoundCreate
)(LPCGUID pcGuidDevice
, LPDIRECTSOUND
*ppDS
, LPUNKNOWN pUnkOuter
);
52 static HRESULT (WINAPI
*pDirectSoundEnumerateA
)(LPDSENUMCALLBACKA pDSEnumCallback
, LPVOID pContext
);
56 // DirectSound Playback Device
58 LPDIRECTSOUNDBUFFER DSpbuffer
;
59 LPDIRECTSOUNDBUFFER DSsbuffer
;
71 static const ALCchar dsDevice
[] = "DirectSound Software";
72 static DevMap
*DeviceList
;
73 static ALuint NumDevices
;
74 static volatile ALuint load_count
;
77 void *DSoundLoad(void)
82 ds_handle
= LoadLibraryA("dsound.dll");
85 AL_PRINT("Failed to load dsound.dll\n");
89 #define LOAD_FUNC(f) do { \
90 p##f = (void*)GetProcAddress((HMODULE)ds_handle, #f); \
93 FreeLibrary(ds_handle); \
95 AL_PRINT("Could not load %s from dsound.dll\n", #f); \
100 ds_handle
= (void*)0xDEADBEEF;
101 #define LOAD_FUNC(f) p##f = f
104 LOAD_FUNC(DirectSoundCreate
);
105 LOAD_FUNC(DirectSoundEnumerateA
);
113 void DSoundUnload(void)
115 if(load_count
== 0 || --load_count
> 0)
119 FreeLibrary(ds_handle
);
125 static BOOL CALLBACK
DSoundEnumDevices(LPGUID guid
, LPCSTR desc
, LPCSTR drvname
, LPVOID data
)
135 temp
= realloc(DeviceList
, sizeof(DevMap
) * (NumDevices
+1));
140 snprintf(str
, sizeof(str
), "DirectSound Software on %s", desc
);
142 DeviceList
[NumDevices
].name
= strdup(str
);
143 DeviceList
[NumDevices
].guid
= *guid
;
152 static ALuint
DSoundProc(ALvoid
*ptr
)
154 ALCdevice
*pDevice
= (ALCdevice
*)ptr
;
155 DSoundData
*pData
= (DSoundData
*)pDevice
->ExtraData
;
157 DWORD LastCursor
= 0;
159 VOID
*WritePtr1
, *WritePtr2
;
160 DWORD WriteCnt1
, WriteCnt2
;
166 EnableRTPrio(RTPrioLevel
);
168 memset(&DSBCaps
, 0, sizeof(DSBCaps
));
169 DSBCaps
.dwSize
= sizeof(DSBCaps
);
170 err
= IDirectSoundBuffer_GetCaps(pData
->DSsbuffer
, &DSBCaps
);
173 AL_PRINT("Failed to get buffer caps: 0x%lx\n", err
);
174 aluHandleDisconnect(pDevice
);
178 FrameSize
= aluChannelsFromFormat(pDevice
->Format
) *
179 aluBytesFromFormat(pDevice
->Format
);
180 FragSize
= pDevice
->UpdateSize
* FrameSize
;
182 IDirectSoundBuffer_GetCurrentPosition(pData
->DSsbuffer
, &LastCursor
, NULL
);
183 while(!pData
->killNow
)
185 // Get current play and write cursors
186 IDirectSoundBuffer_GetCurrentPosition(pData
->DSsbuffer
, &PlayCursor
, NULL
);
187 avail
= (PlayCursor
-LastCursor
+DSBCaps
.dwBufferBytes
) % DSBCaps
.dwBufferBytes
;
194 avail
-= avail
%FragSize
;
196 // Lock output buffer
199 err
= IDirectSoundBuffer_Lock(pData
->DSsbuffer
, LastCursor
, avail
, &WritePtr1
, &WriteCnt1
, &WritePtr2
, &WriteCnt2
, 0);
201 // If the buffer is lost, restore it, play and lock
202 if(err
== DSERR_BUFFERLOST
)
204 err
= IDirectSoundBuffer_Restore(pData
->DSsbuffer
);
206 err
= IDirectSoundBuffer_Play(pData
->DSsbuffer
, 0, 0, DSBPLAY_LOOPING
);
208 err
= IDirectSoundBuffer_Lock(pData
->DSsbuffer
, LastCursor
, avail
, &WritePtr1
, &WriteCnt1
, &WritePtr2
, &WriteCnt2
, 0);
211 // Successfully locked the output buffer
214 // If we have an active context, mix data directly into output buffer otherwise fill with silence
215 aluMixData(pDevice
, WritePtr1
, WriteCnt1
/FrameSize
);
216 aluMixData(pDevice
, WritePtr2
, WriteCnt2
/FrameSize
);
218 // Unlock output buffer only when successfully locked
219 IDirectSoundBuffer_Unlock(pData
->DSsbuffer
, WritePtr1
, WriteCnt1
, WritePtr2
, WriteCnt2
);
222 AL_PRINT("Buffer lock error: %#lx\n", err
);
224 // Update old write cursor location
225 LastCursor
+= WriteCnt1
+WriteCnt2
;
226 LastCursor
%= DSBCaps
.dwBufferBytes
;
232 static ALCboolean
DSoundOpenPlayback(ALCdevice
*device
, const ALCchar
*deviceName
)
234 DSoundData
*pData
= NULL
;
242 deviceName
= dsDevice
;
243 else if(strcmp(deviceName
, dsDevice
) != 0)
249 hr
= pDirectSoundEnumerateA(DSoundEnumDevices
, NULL
);
251 AL_PRINT("Error enumerating DirectSound devices (%#x)!\n", (unsigned int)hr
);
254 for(i
= 0;i
< NumDevices
;i
++)
256 if(strcmp(deviceName
, DeviceList
[i
].name
) == 0)
258 guid
= &DeviceList
[i
].guid
;
269 //Initialise requested device
270 pData
= calloc(1, sizeof(DSoundData
));
273 alcSetError(device
, ALC_OUT_OF_MEMORY
);
278 //DirectSound Init code
279 hr
= pDirectSoundCreate(guid
, &pData
->lpDS
, NULL
);
281 hr
= IDirectSound_SetCooperativeLevel(pData
->lpDS
, GetForegroundWindow(), DSSCL_PRIORITY
);
285 IDirectSound_Release(pData
->lpDS
);
291 device
->szDeviceName
= strdup(deviceName
);
292 device
->ExtraData
= pData
;
296 static void DSoundClosePlayback(ALCdevice
*device
)
298 DSoundData
*pData
= device
->ExtraData
;
300 IDirectSound_Release(pData
->lpDS
);
302 device
->ExtraData
= NULL
;
307 static ALCboolean
DSoundResetPlayback(ALCdevice
*device
)
309 DSoundData
*pData
= (DSoundData
*)device
->ExtraData
;
310 DSBUFFERDESC DSBDescription
;
311 WAVEFORMATEXTENSIBLE OutputType
;
317 memset(&OutputType
, 0, sizeof(OutputType
));
319 hr
= IDirectSound_GetSpeakerConfig(pData
->lpDS
, &speakers
);
320 if(SUCCEEDED(hr
) && ConfigValueExists(NULL
, "format"))
322 if(aluChannelsFromFormat(device
->Format
) == 1)
323 speakers
= DSSPEAKER_COMBINED(DSSPEAKER_MONO
, 0);
324 else if(aluChannelsFromFormat(device
->Format
) == 2)
325 speakers
= DSSPEAKER_COMBINED(DSSPEAKER_STEREO
, 0);
326 else if(aluChannelsFromFormat(device
->Format
) == 4)
327 speakers
= DSSPEAKER_COMBINED(DSSPEAKER_QUAD
, 0);
328 else if(aluChannelsFromFormat(device
->Format
) == 6)
329 speakers
= DSSPEAKER_COMBINED(DSSPEAKER_5POINT1
, 0);
330 else if(aluChannelsFromFormat(device
->Format
) == 8)
331 speakers
= DSSPEAKER_COMBINED(DSSPEAKER_7POINT1
, 0);
334 AL_PRINT("Unknown format: 0x%x\n", device
->Format
);
340 speakers
= DSSPEAKER_CONFIG(speakers
);
341 if(speakers
== DSSPEAKER_MONO
)
343 if(aluBytesFromFormat(device
->Format
) == 1)
344 format
= AL_FORMAT_MONO8
;
345 else if(aluBytesFromFormat(device
->Format
) == 2)
346 format
= AL_FORMAT_MONO16
;
347 else if(aluBytesFromFormat(device
->Format
) == 4)
348 format
= AL_FORMAT_MONO_FLOAT32
;
350 else if(speakers
== DSSPEAKER_STEREO
)
352 if(aluBytesFromFormat(device
->Format
) == 1)
353 format
= AL_FORMAT_STEREO8
;
354 else if(aluBytesFromFormat(device
->Format
) == 2)
355 format
= AL_FORMAT_STEREO16
;
356 else if(aluBytesFromFormat(device
->Format
) == 4)
357 format
= AL_FORMAT_STEREO_FLOAT32
;
359 else if(speakers
== DSSPEAKER_QUAD
)
361 if(aluBytesFromFormat(device
->Format
) == 1)
362 format
= AL_FORMAT_QUAD8
;
363 else if(aluBytesFromFormat(device
->Format
) == 2)
364 format
= AL_FORMAT_QUAD16
;
365 else if(aluBytesFromFormat(device
->Format
) == 4)
366 format
= AL_FORMAT_QUAD32
;
367 OutputType
.dwChannelMask
= SPEAKER_FRONT_LEFT
|
368 SPEAKER_FRONT_RIGHT
|
372 else if(speakers
== DSSPEAKER_5POINT1
)
374 if(aluBytesFromFormat(device
->Format
) == 1)
375 format
= AL_FORMAT_51CHN8
;
376 else if(aluBytesFromFormat(device
->Format
) == 2)
377 format
= AL_FORMAT_51CHN16
;
378 else if(aluBytesFromFormat(device
->Format
) == 4)
379 format
= AL_FORMAT_51CHN32
;
380 OutputType
.dwChannelMask
= SPEAKER_FRONT_LEFT
|
381 SPEAKER_FRONT_RIGHT
|
382 SPEAKER_FRONT_CENTER
|
383 SPEAKER_LOW_FREQUENCY
|
387 else if(speakers
== DSSPEAKER_7POINT1
)
389 if(aluBytesFromFormat(device
->Format
) == 1)
390 format
= AL_FORMAT_71CHN8
;
391 else if(aluBytesFromFormat(device
->Format
) == 2)
392 format
= AL_FORMAT_71CHN16
;
393 else if(aluBytesFromFormat(device
->Format
) == 4)
394 format
= AL_FORMAT_71CHN32
;
395 OutputType
.dwChannelMask
= SPEAKER_FRONT_LEFT
|
396 SPEAKER_FRONT_RIGHT
|
397 SPEAKER_FRONT_CENTER
|
398 SPEAKER_LOW_FREQUENCY
|
405 format
= device
->Format
;
406 frameSize
= aluBytesFromFormat(format
) * aluChannelsFromFormat(format
);
408 OutputType
.Format
.wFormatTag
= WAVE_FORMAT_PCM
;
409 OutputType
.Format
.nChannels
= aluChannelsFromFormat(format
);
410 OutputType
.Format
.wBitsPerSample
= aluBytesFromFormat(format
) * 8;
411 OutputType
.Format
.nBlockAlign
= OutputType
.Format
.nChannels
*OutputType
.Format
.wBitsPerSample
/8;
412 OutputType
.Format
.nSamplesPerSec
= device
->Frequency
;
413 OutputType
.Format
.nAvgBytesPerSec
= OutputType
.Format
.nSamplesPerSec
*OutputType
.Format
.nBlockAlign
;
414 OutputType
.Format
.cbSize
= 0;
417 if(OutputType
.Format
.nChannels
> 2 || OutputType
.Format
.wBitsPerSample
> 16)
419 OutputType
.Format
.wFormatTag
= WAVE_FORMAT_EXTENSIBLE
;
420 OutputType
.Samples
.wValidBitsPerSample
= OutputType
.Format
.wBitsPerSample
;
421 OutputType
.Format
.cbSize
= 22;
422 if(OutputType
.Format
.wBitsPerSample
== 32)
423 OutputType
.SubFormat
= KSDATAFORMAT_SUBTYPE_IEEE_FLOAT
;
425 OutputType
.SubFormat
= KSDATAFORMAT_SUBTYPE_PCM
;
431 memset(&DSBDescription
,0,sizeof(DSBUFFERDESC
));
432 DSBDescription
.dwSize
=sizeof(DSBUFFERDESC
);
433 DSBDescription
.dwFlags
=DSBCAPS_PRIMARYBUFFER
;
434 hr
= IDirectSound_CreateSoundBuffer(pData
->lpDS
, &DSBDescription
, &pData
->DSpbuffer
, NULL
);
437 hr
= IDirectSoundBuffer_SetFormat(pData
->DSpbuffer
,&OutputType
.Format
);
442 memset(&DSBDescription
,0,sizeof(DSBUFFERDESC
));
443 DSBDescription
.dwSize
=sizeof(DSBUFFERDESC
);
444 DSBDescription
.dwFlags
=DSBCAPS_GLOBALFOCUS
|DSBCAPS_GETCURRENTPOSITION2
;
445 DSBDescription
.dwBufferBytes
=device
->UpdateSize
* device
->NumUpdates
* frameSize
;
446 DSBDescription
.lpwfxFormat
=&OutputType
.Format
;
447 hr
= IDirectSound_CreateSoundBuffer(pData
->lpDS
, &DSBDescription
, &pData
->DSsbuffer
, NULL
);
451 hr
= IDirectSoundBuffer_Play(pData
->DSsbuffer
, 0, 0, DSBPLAY_LOOPING
);
455 device
->Format
= format
;
456 SetDefaultWFXChannelOrder(device
);
457 pData
->thread
= StartThread(DSoundProc
, device
);
464 if (pData
->DSsbuffer
)
465 IDirectSoundBuffer_Release(pData
->DSsbuffer
);
466 pData
->DSsbuffer
= NULL
;
467 if (pData
->DSpbuffer
)
468 IDirectSoundBuffer_Release(pData
->DSpbuffer
);
469 pData
->DSpbuffer
= NULL
;
476 static void DSoundStopPlayback(ALCdevice
*device
)
478 DSoundData
*pData
= device
->ExtraData
;
484 StopThread(pData
->thread
);
485 pData
->thread
= NULL
;
489 IDirectSoundBuffer_Release(pData
->DSsbuffer
);
490 pData
->DSsbuffer
= NULL
;
491 if (pData
->DSpbuffer
)
492 IDirectSoundBuffer_Release(pData
->DSpbuffer
);
493 pData
->DSpbuffer
= NULL
;
497 static ALCboolean
DSoundOpenCapture(ALCdevice
*pDevice
, const ALCchar
*deviceName
)
504 static void DSoundCloseCapture(ALCdevice
*pDevice
)
509 static void DSoundStartCapture(ALCdevice
*pDevice
)
514 static void DSoundStopCapture(ALCdevice
*pDevice
)
519 static void DSoundCaptureSamples(ALCdevice
*pDevice
, ALCvoid
*pBuffer
, ALCuint lSamples
)
526 static ALCuint
DSoundAvailableSamples(ALCdevice
*pDevice
)
533 BackendFuncs DSoundFuncs
= {
542 DSoundCaptureSamples
,
543 DSoundAvailableSamples
547 void alcDSoundInit(BackendFuncs
*FuncList
)
549 *FuncList
= DSoundFuncs
;
552 void alcDSoundDeinit(void)
556 for(i
= 0;i
< NumDevices
;++i
)
557 free(DeviceList
[i
].name
);
563 void alcDSoundProbe(int type
)
565 if(!DSoundLoad()) return;
567 if(type
== DEVICE_PROBE
)
568 AppendDeviceList(dsDevice
);
569 else if(type
== ALL_DEVICE_PROBE
)
574 for(i
= 0;i
< NumDevices
;++i
)
575 free(DeviceList
[i
].name
);
580 hr
= pDirectSoundEnumerateA(DSoundEnumDevices
, NULL
);
582 AL_PRINT("Error enumerating DirectSound devices (%#x)!\n", (unsigned int)hr
);
585 for(i
= 0;i
< NumDevices
;i
++)
586 AppendAllDeviceList(DeviceList
[i
].name
);