Alc/dsound.c

   1 /**
   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.
   8  *
   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.
  13  *
  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
  19  */
  20
  21 #include "config.h"
  22
  23 #define _WIN32_WINNT 0x0500
  24 #define INITGUID
  25 #include <stdlib.h>
  26 #include <stdio.h>
  27 #include <memory.h>
  28
  29 #include <dsound.h>
  30 #include <mmreg.h>
  31 #ifndef _WAVEFORMATEXTENSIBLE_
  32 #include <ks.h>
  33 #include <ksmedia.h>
  34 #endif
  35
  36 #include "alMain.h"
  37 #include "AL/al.h"
  38 #include "AL/alc.h"
  39
  40 #ifndef DSSPEAKER_5POINT1
  41 #define DSSPEAKER_5POINT1       6
  42 #endif
  43 #ifndef DSSPEAKER_7POINT1
  44 #define DSSPEAKER_7POINT1       7
  45 #endif
  46
  47 DEFINE_GUID(KSDATAFORMAT_SUBTYPE_PCM, 0x00000001, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);
  48
  49 static void *ds_handle;
  50 static HRESULT (WINAPI *pDirectSoundCreate)(LPCGUID pcGuidDevice, LPDIRECTSOUND *ppDS, LPUNKNOWN pUnkOuter);
  51 static HRESULT (WINAPI *pDirectSoundEnumerateA)(LPDSENUMCALLBACKA pDSEnumCallback, LPVOID pContext);
  52
  53 // Since DSound doesn't report the fragment size, emulate it
  54 static int num_frags;
  55
  56 typedef struct {
  57     // DirectSound Playback Device
  58     LPDIRECTSOUND          lpDS;
  59     LPDIRECTSOUNDBUFFER    DSpbuffer;
  60     LPDIRECTSOUNDBUFFER    DSsbuffer;
  61
  62     volatile int killNow;
  63     ALvoid *thread;
  64 } DSoundData;
  65
  66
  67 typedef struct {
  68     ALCchar *name;
  69     GUID guid;
  70 } DevMap;
  71 static DevMap DeviceList[16];
  72
  73
  74 static ALuint DSoundProc(ALvoid *ptr)
  75 {
  76     ALCdevice *pDevice = (ALCdevice*)ptr;
  77     DSoundData *pData = (DSoundData*)pDevice->ExtraData;
  78     DSBCAPS DSBCaps;
  79     DWORD LastCursor = 0;
  80     DWORD PlayCursor;
  81     VOID *WritePtr1, *WritePtr2;
  82     DWORD WriteCnt1,  WriteCnt2;
  83     DWORD FragSize;
  84     DWORD avail;
  85     HRESULT err;
  86
  87     memset(&DSBCaps, 0, sizeof(DSBCaps));
  88     DSBCaps.dwSize = sizeof(DSBCaps);
  89     err = IDirectSoundBuffer_GetCaps(pData->DSsbuffer, &DSBCaps);
  90     if(FAILED(err))
  91     {
  92         AL_PRINT("Failed to get buffer caps: 0x%lx\n", err);
  93         return 1;
  94     }
  95     FragSize = DSBCaps.dwBufferBytes / num_frags;
  96
  97     IDirectSoundBuffer_GetCurrentPosition(pData->DSsbuffer, &LastCursor, NULL);
  98     while(!pData->killNow)
  99     {
 100         // Get current play and write cursors
 101         IDirectSoundBuffer_GetCurrentPosition(pData->DSsbuffer, &PlayCursor, NULL);
 102         avail = (PlayCursor-LastCursor+DSBCaps.dwBufferBytes) % DSBCaps.dwBufferBytes;
 103
 104         if(avail < FragSize)
 105         {
 106             Sleep(1);
 107             continue;
 108         }
 109         avail -= avail%FragSize;
 110
 111         // Lock output buffer
 112         WriteCnt1 = 0;
 113         WriteCnt2 = 0;
 114         err = IDirectSoundBuffer_Lock(pData->DSsbuffer, LastCursor, avail, &WritePtr1, &WriteCnt1, &WritePtr2, &WriteCnt2, 0);
 115
 116         // If the buffer is lost, restore it, play and lock
 117         if(err == DSERR_BUFFERLOST)
 118         {
 119             err = IDirectSoundBuffer_Restore(pData->DSsbuffer);
 120             if(SUCCEEDED(err))
 121                 err = IDirectSoundBuffer_Play(pData->DSsbuffer, 0, 0, DSBPLAY_LOOPING);
 122             if(SUCCEEDED(err))
 123                 err = IDirectSoundBuffer_Lock(pData->DSsbuffer, LastCursor, avail, &WritePtr1, &WriteCnt1, &WritePtr2, &WriteCnt2, 0);
 124         }
 125
 126         // Successfully locked the output buffer
 127         if(SUCCEEDED(err))
 128         {
 129             // If we have an active context, mix data directly into output buffer otherwise fill with silence
 130             SuspendContext(NULL);
 131             aluMixData(pDevice->Context, WritePtr1, WriteCnt1, pDevice->Format);
 132             aluMixData(pDevice->Context, WritePtr2, WriteCnt2, pDevice->Format);
 133             ProcessContext(NULL);
 134
 135             // Unlock output buffer only when successfully locked
 136             IDirectSoundBuffer_Unlock(pData->DSsbuffer, WritePtr1, WriteCnt1, WritePtr2, WriteCnt2);
 137         }
 138         else
 139             AL_PRINT("Buffer lock error: %#lx\n", err);
 140
 141         // Update old write cursor location
 142         LastCursor += WriteCnt1+WriteCnt2;
 143         LastCursor %= DSBCaps.dwBufferBytes;
 144     }
 145
 146     return 0;
 147 }
 148
 149 static ALCboolean DSoundOpenPlayback(ALCdevice *device, const ALCchar *deviceName)
 150 {
 151     DSBUFFERDESC DSBDescription;
 152     DSoundData *pData = NULL;
 153     WAVEFORMATEXTENSIBLE OutputType;
 154     DWORD frameSize = 0;
 155     LPGUID guid = NULL;
 156     ALenum format = 0;
 157     DWORD speakers;
 158     HRESULT hr;
 159
 160     if(ds_handle == NULL)
 161         return ALC_FALSE;
 162
 163     if(deviceName)
 164     {
 165         int i;
 166         for(i = 0;DeviceList[i].name;i++)
 167         {
 168             if(strcmp(deviceName, DeviceList[i].name) == 0)
 169             {
 170                 device->szDeviceName = DeviceList[i].name;
 171                 if(i > 0)
 172                     guid = &DeviceList[i].guid;
 173                 break;
 174             }
 175         }
 176         if(!DeviceList[i].name)
 177             return ALC_FALSE;
 178     }
 179     else
 180         device->szDeviceName = DeviceList[0].name;
 181
 182     memset(&OutputType, 0, sizeof(OutputType));
 183
 184     //Initialise requested device
 185
 186     pData = calloc(1, sizeof(DSoundData));
 187     if(!pData)
 188     {
 189         SetALCError(ALC_OUT_OF_MEMORY);
 190         return ALC_FALSE;
 191     }
 192
 193     //DirectSound Init code
 194     hr = pDirectSoundCreate(guid, &pData->lpDS, NULL);
 195     if(SUCCEEDED(hr))
 196         hr = IDirectSound_SetCooperativeLevel(pData->lpDS, GetForegroundWindow(), DSSCL_PRIORITY);
 197
 198     if(SUCCEEDED(hr))
 199     {
 200         if(*(GetConfigValue(NULL, "format", "")) == 0)
 201             hr = IDirectSound_GetSpeakerConfig(pData->lpDS, &speakers);
 202         else
 203         {
 204             if(device->Format == AL_FORMAT_MONO8 || device->Format == AL_FORMAT_MONO16)
 205                 speakers = DSSPEAKER_COMBINED(DSSPEAKER_MONO, 0);
 206             else if(device->Format == AL_FORMAT_STEREO8 || device->Format == AL_FORMAT_STEREO16)
 207                 speakers = DSSPEAKER_COMBINED(DSSPEAKER_STEREO, 0);
 208             else if(device->Format == AL_FORMAT_QUAD8 || device->Format == AL_FORMAT_QUAD16)
 209                 speakers = DSSPEAKER_COMBINED(DSSPEAKER_QUAD, 0);
 210             else if(device->Format == AL_FORMAT_51CHN8 || device->Format == AL_FORMAT_51CHN16)
 211                 speakers = DSSPEAKER_COMBINED(DSSPEAKER_5POINT1, 0);
 212             else if(device->Format == AL_FORMAT_71CHN8 || device->Format == AL_FORMAT_71CHN16)
 213                 speakers = DSSPEAKER_COMBINED(DSSPEAKER_7POINT1, 0);
 214             else
 215                 hr = IDirectSound_GetSpeakerConfig(pData->lpDS, &speakers);
 216         }
 217     }
 218     if(SUCCEEDED(hr))
 219     {
 220         speakers = DSSPEAKER_CONFIG(speakers);
 221         if(speakers == DSSPEAKER_MONO)
 222         {
 223             if(aluBytesFromFormat(device->Format) == 1)
 224                 format = AL_FORMAT_MONO8;
 225             else
 226                 format = AL_FORMAT_MONO16;
 227         }
 228         else if(speakers == DSSPEAKER_STEREO)
 229         {
 230             if(aluBytesFromFormat(device->Format) == 1)
 231                 format = AL_FORMAT_STEREO8;
 232             else
 233                 format = AL_FORMAT_STEREO16;
 234         }
 235         else if(speakers == DSSPEAKER_QUAD)
 236         {
 237             if(aluBytesFromFormat(device->Format) == 1)
 238                 format = AL_FORMAT_QUAD8;
 239             else
 240                 format = AL_FORMAT_QUAD16;
 241             OutputType.dwChannelMask = SPEAKER_FRONT_LEFT |
 242                                        SPEAKER_FRONT_RIGHT |
 243                                        SPEAKER_BACK_LEFT |
 244                                        SPEAKER_BACK_RIGHT;
 245         }
 246         else if(speakers == DSSPEAKER_5POINT1)
 247         {
 248             if(aluBytesFromFormat(device->Format) == 1)
 249                 format = AL_FORMAT_51CHN8;
 250             else
 251                 format = AL_FORMAT_51CHN16;
 252             OutputType.dwChannelMask = SPEAKER_FRONT_LEFT |
 253                                        SPEAKER_FRONT_RIGHT |
 254                                        SPEAKER_FRONT_CENTER |
 255                                        SPEAKER_LOW_FREQUENCY |
 256                                        SPEAKER_BACK_LEFT |
 257                                        SPEAKER_BACK_RIGHT;
 258         }
 259         else if(speakers == DSSPEAKER_7POINT1)
 260         {
 261             if(aluBytesFromFormat(device->Format) == 1)
 262                 format = AL_FORMAT_71CHN8;
 263             else
 264                 format = AL_FORMAT_71CHN16;
 265             OutputType.dwChannelMask = SPEAKER_FRONT_LEFT |
 266                                        SPEAKER_FRONT_RIGHT |
 267                                        SPEAKER_FRONT_CENTER |
 268                                        SPEAKER_LOW_FREQUENCY |
 269                                        SPEAKER_BACK_LEFT |
 270                                        SPEAKER_BACK_RIGHT |
 271                                        SPEAKER_SIDE_LEFT |
 272                                        SPEAKER_SIDE_RIGHT;
 273         }
 274         else
 275             format = device->Format;
 276         frameSize = aluBytesFromFormat(format) * aluChannelsFromFormat(format);
 277
 278         OutputType.Format.wFormatTag = WAVE_FORMAT_PCM;
 279         OutputType.Format.nChannels = aluChannelsFromFormat(format);
 280         OutputType.Format.wBitsPerSample = aluBytesFromFormat(format) * 8;
 281         OutputType.Format.nBlockAlign = OutputType.Format.nChannels*OutputType.Format.wBitsPerSample/8;
 282         OutputType.Format.nSamplesPerSec = device->Frequency;
 283         OutputType.Format.nAvgBytesPerSec = OutputType.Format.nSamplesPerSec*OutputType.Format.nBlockAlign;
 284         OutputType.Format.cbSize = 0;
 285     }
 286
 287     if(OutputType.Format.nChannels > 2)
 288     {
 289         OutputType.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
 290         OutputType.Samples.wValidBitsPerSample = OutputType.Format.wBitsPerSample;
 291         OutputType.Format.cbSize = 22;
 292         OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
 293     }
 294     else
 295     {
 296         if(SUCCEEDED(hr))
 297         {
 298             memset(&DSBDescription,0,sizeof(DSBUFFERDESC));
 299             DSBDescription.dwSize=sizeof(DSBUFFERDESC);
 300             DSBDescription.dwFlags=DSBCAPS_PRIMARYBUFFER;
 301             hr = IDirectSound_CreateSoundBuffer(pData->lpDS, &DSBDescription, &pData->DSpbuffer, NULL);
 302         }
 303         if(SUCCEEDED(hr))
 304             hr = IDirectSoundBuffer_SetFormat(pData->DSpbuffer,&OutputType.Format);
 305     }
 306
 307     if(SUCCEEDED(hr))
 308     {
 309         memset(&DSBDescription,0,sizeof(DSBUFFERDESC));
 310         DSBDescription.dwSize=sizeof(DSBUFFERDESC);
 311         DSBDescription.dwFlags=DSBCAPS_GLOBALFOCUS|DSBCAPS_GETCURRENTPOSITION2;
 312         DSBDescription.dwBufferBytes=(device->UpdateSize/num_frags) * num_frags * frameSize;
 313         DSBDescription.lpwfxFormat=&OutputType.Format;
 314         hr = IDirectSound_CreateSoundBuffer(pData->lpDS, &DSBDescription, &pData->DSsbuffer, NULL);
 315     }
 316
 317     if(SUCCEEDED(hr))
 318         hr = IDirectSoundBuffer_Play(pData->DSsbuffer, 0, 0, DSBPLAY_LOOPING);
 319
 320     if(SUCCEEDED(hr))
 321     {
 322         device->ExtraData = pData;
 323         pData->thread = StartThread(DSoundProc, device);
 324         if(!pData->thread)
 325             hr = E_FAIL;
 326     }
 327
 328     if(FAILED(hr))
 329     {
 330         if (pData->DSsbuffer)
 331             IDirectSoundBuffer_Release(pData->DSsbuffer);
 332         if (pData->DSpbuffer)
 333             IDirectSoundBuffer_Release(pData->DSpbuffer);
 334         if (pData->lpDS)
 335             IDirectSound_Release(pData->lpDS);
 336
 337         free(pData);
 338         return ALC_FALSE;
 339     }
 340
 341     device->Format = format;
 342     device->UpdateSize /= num_frags;
 343
 344     return ALC_TRUE;
 345 }
 346
 347 static void DSoundClosePlayback(ALCdevice *device)
 348 {
 349     DSoundData *pData = device->ExtraData;
 350
 351     pData->killNow = 1;
 352     StopThread(pData->thread);
 353
 354     IDirectSoundBuffer_Release(pData->DSsbuffer);
 355     if (pData->DSpbuffer)
 356         IDirectSoundBuffer_Release(pData->DSpbuffer);
 357     IDirectSound_Release(pData->lpDS);
 358
 359     free(pData);
 360     device->ExtraData = NULL;
 361 }
 362
 363
 364 static ALCboolean DSoundOpenCapture(ALCdevice *pDevice, const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei SampleSize)
 365 {
 366     (void)pDevice;
 367     (void)deviceName;
 368     (void)frequency;
 369     (void)format;
 370     (void)SampleSize;
 371     return ALC_FALSE;
 372 }
 373
 374 static void DSoundCloseCapture(ALCdevice *pDevice)
 375 {
 376     (void)pDevice;
 377 }
 378
 379 static void DSoundStartCapture(ALCdevice *pDevice)
 380 {
 381     (void)pDevice;
 382 }
 383
 384 static void DSoundStopCapture(ALCdevice *pDevice)
 385 {
 386     (void)pDevice;
 387 }
 388
 389 static void DSoundCaptureSamples(ALCdevice *pDevice, ALCvoid *pBuffer, ALCuint lSamples)
 390 {
 391     (void)pDevice;
 392     (void)pBuffer;
 393     (void)lSamples;
 394 }
 395
 396 static ALCuint DSoundAvailableSamples(ALCdevice *pDevice)
 397 {
 398     (void)pDevice;
 399     return 0;
 400 }
 401
 402
 403 BackendFuncs DSoundFuncs = {
 404     DSoundOpenPlayback,
 405     DSoundClosePlayback,
 406     DSoundOpenCapture,
 407     DSoundCloseCapture,
 408     DSoundStartCapture,
 409     DSoundStopCapture,
 410     DSoundCaptureSamples,
 411     DSoundAvailableSamples
 412 };
 413
 414 static BOOL CALLBACK DSoundEnumDevices(LPGUID guid, LPCSTR desc, LPCSTR drvname, LPVOID data)
 415 {
 416     size_t *iter = data;
 417     (void)drvname;
 418
 419     if(guid)
 420     {
 421         char str[128];
 422         snprintf(str, sizeof(str), "DirectSound Software on %s", desc);
 423         DeviceList[*iter].name = AppendAllDeviceList(str);
 424         DeviceList[*iter].guid = *guid;
 425         (*iter)++;
 426     }
 427     else
 428         DeviceList[0].name = AppendDeviceList("DirectSound Software");
 429
 430     return TRUE;
 431 }
 432
 433 void alcDSoundInit(BackendFuncs *FuncList)
 434 {
 435     size_t iter = 1;
 436     HRESULT hr;
 437
 438     *FuncList = DSoundFuncs;
 439
 440 #ifdef _WIN32
 441     ds_handle = LoadLibraryA("dsound.dll");
 442     if(ds_handle == NULL)
 443     {
 444         AL_PRINT("Failed to load dsound.dll\n");
 445         return;
 446     }
 447
 448 #define LOAD_FUNC(f) do { \
 449     p##f = (void*)GetProcAddress((HMODULE)ds_handle, #f); \
 450     if(p##f == NULL) \
 451     { \
 452         FreeLibrary(ds_handle); \
 453         ds_handle = NULL; \
 454         AL_PRINT("Could not load %s from dsound.dll\n", #f); \
 455         return; \
 456     } \
 457 } while(0)
 458 #else
 459     ds_handle = (void*)0xDEADBEEF;
 460 #define LOAD_FUNC(f) p##f = f
 461 #endif
 462
 463 LOAD_FUNC(DirectSoundCreate);
 464 LOAD_FUNC(DirectSoundEnumerateA);
 465 #undef LOAD_FUNC
 466
 467     num_frags = GetConfigValueInt("dsound", "periods", 4);
 468     if(num_frags < 2) num_frags = 2;
 469
 470     hr = pDirectSoundEnumerateA(DSoundEnumDevices, &iter);
 471     if(FAILED(hr))
 472         AL_PRINT("Error enumerating DirectSound devices (%#x)!\n", (unsigned int)hr);
 473 }