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 DEFINE_GUID(KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, 0x00000003, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);
  49
  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);
  53
  54
  55 typedef struct {
  56     // DirectSound Playback Device
  57     LPDIRECTSOUND          lpDS;
  58     LPDIRECTSOUNDBUFFER    DSpbuffer;
  59     LPDIRECTSOUNDBUFFER    DSsbuffer;
  60
  61     volatile int killNow;
  62     ALvoid *thread;
  63 } DSoundData;
  64
  65
  66 typedef struct {
  67     ALCchar *name;
  68     GUID guid;
  69 } DevMap;
  70
  71 static const ALCchar dsDevice[] = "DirectSound Software";
  72 static DevMap *DeviceList;
  73 static ALuint NumDevices;
  74 static volatile ALuint load_count;
  75
  76
  77 void DSoundLoad(void)
  78 {
  79     if(load_count == 0)
  80     {
  81 #ifdef _WIN32
  82         ds_handle = LoadLibraryA("dsound.dll");
  83         if(ds_handle == NULL)
  84         {
  85             AL_PRINT("Failed to load dsound.dll\n");
  86             return;
  87         }
  88
  89 #define LOAD_FUNC(f) do { \
  90     p##f = (void*)GetProcAddress((HMODULE)ds_handle, #f); \
  91     if(p##f == NULL) \
  92     { \
  93         FreeLibrary(ds_handle); \
  94         ds_handle = NULL; \
  95         AL_PRINT("Could not load %s from dsound.dll\n", #f); \
  96         return; \
  97     } \
  98 } while(0)
  99 #else
 100         ds_handle = (void*)0xDEADBEEF;
 101 #define LOAD_FUNC(f) p##f = f
 102 #endif
 103
 104 LOAD_FUNC(DirectSoundCreate);
 105 LOAD_FUNC(DirectSoundEnumerateA);
 106 #undef LOAD_FUNC
 107     }
 108     ++load_count;
 109 }
 110
 111 void DSoundUnload(void)
 112 {
 113     if(load_count == 0 || --load_count > 0)
 114         return;
 115
 116 #ifdef _WIN32
 117     FreeLibrary(ds_handle);
 118 #endif
 119     ds_handle = NULL;
 120 }
 121
 122
 123 static ALuint DSoundProc(ALvoid *ptr)
 124 {
 125     ALCdevice *pDevice = (ALCdevice*)ptr;
 126     DSoundData *pData = (DSoundData*)pDevice->ExtraData;
 127     DSBCAPS DSBCaps;
 128     DWORD LastCursor = 0;
 129     DWORD PlayCursor;
 130     VOID *WritePtr1, *WritePtr2;
 131     DWORD WriteCnt1,  WriteCnt2;
 132     DWORD FrameSize;
 133     DWORD FragSize;
 134     DWORD avail;
 135     HRESULT err;
 136
 137     EnableRTPrio(RTPrioLevel);
 138
 139     memset(&DSBCaps, 0, sizeof(DSBCaps));
 140     DSBCaps.dwSize = sizeof(DSBCaps);
 141     err = IDirectSoundBuffer_GetCaps(pData->DSsbuffer, &DSBCaps);
 142     if(FAILED(err))
 143     {
 144         AL_PRINT("Failed to get buffer caps: 0x%lx\n", err);
 145         aluHandleDisconnect(pDevice);
 146         return 1;
 147     }
 148
 149     FrameSize = aluChannelsFromFormat(pDevice->Format) *
 150                 aluBytesFromFormat(pDevice->Format);
 151     FragSize = pDevice->UpdateSize * FrameSize;
 152
 153     IDirectSoundBuffer_GetCurrentPosition(pData->DSsbuffer, &LastCursor, NULL);
 154     while(!pData->killNow)
 155     {
 156         // Get current play and write cursors
 157         IDirectSoundBuffer_GetCurrentPosition(pData->DSsbuffer, &PlayCursor, NULL);
 158         avail = (PlayCursor-LastCursor+DSBCaps.dwBufferBytes) % DSBCaps.dwBufferBytes;
 159
 160         if(avail < FragSize)
 161         {
 162             Sleep(1);
 163             continue;
 164         }
 165         avail -= avail%FragSize;
 166
 167         // Lock output buffer
 168         WriteCnt1 = 0;
 169         WriteCnt2 = 0;
 170         err = IDirectSoundBuffer_Lock(pData->DSsbuffer, LastCursor, avail, &WritePtr1, &WriteCnt1, &WritePtr2, &WriteCnt2, 0);
 171
 172         // If the buffer is lost, restore it, play and lock
 173         if(err == DSERR_BUFFERLOST)
 174         {
 175             err = IDirectSoundBuffer_Restore(pData->DSsbuffer);
 176             if(SUCCEEDED(err))
 177                 err = IDirectSoundBuffer_Play(pData->DSsbuffer, 0, 0, DSBPLAY_LOOPING);
 178             if(SUCCEEDED(err))
 179                 err = IDirectSoundBuffer_Lock(pData->DSsbuffer, LastCursor, avail, &WritePtr1, &WriteCnt1, &WritePtr2, &WriteCnt2, 0);
 180         }
 181
 182         // Successfully locked the output buffer
 183         if(SUCCEEDED(err))
 184         {
 185             // If we have an active context, mix data directly into output buffer otherwise fill with silence
 186             aluMixData(pDevice, WritePtr1, WriteCnt1/FrameSize);
 187             aluMixData(pDevice, WritePtr2, WriteCnt2/FrameSize);
 188
 189             // Unlock output buffer only when successfully locked
 190             IDirectSoundBuffer_Unlock(pData->DSsbuffer, WritePtr1, WriteCnt1, WritePtr2, WriteCnt2);
 191         }
 192         else
 193             AL_PRINT("Buffer lock error: %#lx\n", err);
 194
 195         // Update old write cursor location
 196         LastCursor += WriteCnt1+WriteCnt2;
 197         LastCursor %= DSBCaps.dwBufferBytes;
 198     }
 199
 200     return 0;
 201 }
 202
 203 static ALCboolean DSoundOpenPlayback(ALCdevice *device, const ALCchar *deviceName)
 204 {
 205     DSoundData *pData = NULL;
 206     LPGUID guid = NULL;
 207     HRESULT hr;
 208
 209     if(!deviceName)
 210         deviceName = dsDevice;
 211     else if(strcmp(deviceName, dsDevice) != 0)
 212     {
 213         ALuint i;
 214         for(i = 0;i < NumDevices;i++)
 215         {
 216             if(strcmp(deviceName, DeviceList[i].name) == 0)
 217             {
 218                 guid = &DeviceList[i].guid;
 219                 break;
 220             }
 221         }
 222         if(i == NumDevices)
 223             return ALC_FALSE;
 224     }
 225
 226     DSoundLoad();
 227     if(ds_handle == NULL)
 228         return ALC_FALSE;
 229
 230     //Initialise requested device
 231
 232     pData = calloc(1, sizeof(DSoundData));
 233     if(!pData)
 234     {
 235         alcSetError(ALC_OUT_OF_MEMORY);
 236         DSoundUnload();
 237         return ALC_FALSE;
 238     }
 239
 240     //DirectSound Init code
 241     hr = pDirectSoundCreate(guid, &pData->lpDS, NULL);
 242     if(SUCCEEDED(hr))
 243         hr = IDirectSound_SetCooperativeLevel(pData->lpDS, GetForegroundWindow(), DSSCL_PRIORITY);
 244     if(FAILED(hr))
 245     {
 246         if(pData->lpDS)
 247             IDirectSound_Release(pData->lpDS);
 248         free(pData);
 249         DSoundUnload();
 250         return ALC_FALSE;
 251     }
 252
 253     device->szDeviceName = strdup(deviceName);
 254     device->ExtraData = pData;
 255     return ALC_TRUE;
 256 }
 257
 258 static void DSoundClosePlayback(ALCdevice *device)
 259 {
 260     DSoundData *pData = device->ExtraData;
 261
 262     IDirectSound_Release(pData->lpDS);
 263     free(pData);
 264     device->ExtraData = NULL;
 265
 266     DSoundUnload();
 267 }
 268
 269 static ALCboolean DSoundResetPlayback(ALCdevice *device)
 270 {
 271     DSoundData *pData = (DSoundData*)device->ExtraData;
 272     DSBUFFERDESC DSBDescription;
 273     WAVEFORMATEXTENSIBLE OutputType;
 274     DWORD frameSize = 0;
 275     ALenum format = 0;
 276     DWORD speakers;
 277     HRESULT hr;
 278
 279     memset(&OutputType, 0, sizeof(OutputType));
 280
 281     hr = IDirectSound_GetSpeakerConfig(pData->lpDS, &speakers);
 282     if(SUCCEEDED(hr) && *(GetConfigValue(NULL, "format", "")) != 0)
 283     {
 284         if(aluChannelsFromFormat(device->Format) == 1)
 285             speakers = DSSPEAKER_COMBINED(DSSPEAKER_MONO, 0);
 286         else if(aluChannelsFromFormat(device->Format) == 2)
 287             speakers = DSSPEAKER_COMBINED(DSSPEAKER_STEREO, 0);
 288         else if(aluChannelsFromFormat(device->Format) == 4)
 289             speakers = DSSPEAKER_COMBINED(DSSPEAKER_QUAD, 0);
 290         else if(aluChannelsFromFormat(device->Format) == 6)
 291             speakers = DSSPEAKER_COMBINED(DSSPEAKER_5POINT1, 0);
 292         else if(aluChannelsFromFormat(device->Format) == 8)
 293             speakers = DSSPEAKER_COMBINED(DSSPEAKER_7POINT1, 0);
 294         else
 295         {
 296             AL_PRINT("Unknown format: 0x%x\n", device->Format);
 297             return ALC_FALSE;
 298         }
 299     }
 300     if(SUCCEEDED(hr))
 301     {
 302         speakers = DSSPEAKER_CONFIG(speakers);
 303         if(speakers == DSSPEAKER_MONO)
 304         {
 305             if(aluBytesFromFormat(device->Format) == 1)
 306                 format = AL_FORMAT_MONO8;
 307             else if(aluBytesFromFormat(device->Format) == 2)
 308                 format = AL_FORMAT_MONO16;
 309             else if(aluBytesFromFormat(device->Format) == 4)
 310                 format = AL_FORMAT_MONO_FLOAT32;
 311         }
 312         else if(speakers == DSSPEAKER_STEREO)
 313         {
 314             if(aluBytesFromFormat(device->Format) == 1)
 315                 format = AL_FORMAT_STEREO8;
 316             else if(aluBytesFromFormat(device->Format) == 2)
 317                 format = AL_FORMAT_STEREO16;
 318             else if(aluBytesFromFormat(device->Format) == 4)
 319                 format = AL_FORMAT_STEREO_FLOAT32;
 320         }
 321         else if(speakers == DSSPEAKER_QUAD)
 322         {
 323             if(aluBytesFromFormat(device->Format) == 1)
 324                 format = AL_FORMAT_QUAD8;
 325             else if(aluBytesFromFormat(device->Format) == 2)
 326                 format = AL_FORMAT_QUAD16;
 327             else if(aluBytesFromFormat(device->Format) == 4)
 328                 format = AL_FORMAT_QUAD32;
 329             OutputType.dwChannelMask = SPEAKER_FRONT_LEFT |
 330                                        SPEAKER_FRONT_RIGHT |
 331                                        SPEAKER_BACK_LEFT |
 332                                        SPEAKER_BACK_RIGHT;
 333         }
 334         else if(speakers == DSSPEAKER_5POINT1)
 335         {
 336             if(aluBytesFromFormat(device->Format) == 1)
 337                 format = AL_FORMAT_51CHN8;
 338             else if(aluBytesFromFormat(device->Format) == 2)
 339                 format = AL_FORMAT_51CHN16;
 340             else if(aluBytesFromFormat(device->Format) == 4)
 341                 format = AL_FORMAT_51CHN32;
 342             OutputType.dwChannelMask = SPEAKER_FRONT_LEFT |
 343                                        SPEAKER_FRONT_RIGHT |
 344                                        SPEAKER_FRONT_CENTER |
 345                                        SPEAKER_LOW_FREQUENCY |
 346                                        SPEAKER_BACK_LEFT |
 347                                        SPEAKER_BACK_RIGHT;
 348         }
 349         else if(speakers == DSSPEAKER_7POINT1)
 350         {
 351             if(aluBytesFromFormat(device->Format) == 1)
 352                 format = AL_FORMAT_71CHN8;
 353             else if(aluBytesFromFormat(device->Format) == 2)
 354                 format = AL_FORMAT_71CHN16;
 355             else if(aluBytesFromFormat(device->Format) == 4)
 356                 format = AL_FORMAT_71CHN32;
 357             OutputType.dwChannelMask = SPEAKER_FRONT_LEFT |
 358                                        SPEAKER_FRONT_RIGHT |
 359                                        SPEAKER_FRONT_CENTER |
 360                                        SPEAKER_LOW_FREQUENCY |
 361                                        SPEAKER_BACK_LEFT |
 362                                        SPEAKER_BACK_RIGHT |
 363                                        SPEAKER_SIDE_LEFT |
 364                                        SPEAKER_SIDE_RIGHT;
 365         }
 366         else
 367             format = device->Format;
 368         frameSize = aluBytesFromFormat(format) * aluChannelsFromFormat(format);
 369
 370         OutputType.Format.wFormatTag = WAVE_FORMAT_PCM;
 371         OutputType.Format.nChannels = aluChannelsFromFormat(format);
 372         OutputType.Format.wBitsPerSample = aluBytesFromFormat(format) * 8;
 373         OutputType.Format.nBlockAlign = OutputType.Format.nChannels*OutputType.Format.wBitsPerSample/8;
 374         OutputType.Format.nSamplesPerSec = device->Frequency;
 375         OutputType.Format.nAvgBytesPerSec = OutputType.Format.nSamplesPerSec*OutputType.Format.nBlockAlign;
 376         OutputType.Format.cbSize = 0;
 377     }
 378
 379     if(OutputType.Format.nChannels > 2 || OutputType.Format.wBitsPerSample > 16)
 380     {
 381         OutputType.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
 382         OutputType.Samples.wValidBitsPerSample = OutputType.Format.wBitsPerSample;
 383         OutputType.Format.cbSize = 22;
 384         if(OutputType.Format.wBitsPerSample == 32)
 385             OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
 386         else
 387             OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
 388     }
 389     else
 390     {
 391         if(SUCCEEDED(hr))
 392         {
 393             memset(&DSBDescription,0,sizeof(DSBUFFERDESC));
 394             DSBDescription.dwSize=sizeof(DSBUFFERDESC);
 395             DSBDescription.dwFlags=DSBCAPS_PRIMARYBUFFER;
 396             hr = IDirectSound_CreateSoundBuffer(pData->lpDS, &DSBDescription, &pData->DSpbuffer, NULL);
 397         }
 398         if(SUCCEEDED(hr))
 399             hr = IDirectSoundBuffer_SetFormat(pData->DSpbuffer,&OutputType.Format);
 400     }
 401
 402     if(SUCCEEDED(hr))
 403     {
 404         memset(&DSBDescription,0,sizeof(DSBUFFERDESC));
 405         DSBDescription.dwSize=sizeof(DSBUFFERDESC);
 406         DSBDescription.dwFlags=DSBCAPS_GLOBALFOCUS|DSBCAPS_GETCURRENTPOSITION2;
 407         DSBDescription.dwBufferBytes=device->UpdateSize * device->NumUpdates * frameSize;
 408         DSBDescription.lpwfxFormat=&OutputType.Format;
 409         hr = IDirectSound_CreateSoundBuffer(pData->lpDS, &DSBDescription, &pData->DSsbuffer, NULL);
 410     }
 411
 412     if(SUCCEEDED(hr))
 413         hr = IDirectSoundBuffer_Play(pData->DSsbuffer, 0, 0, DSBPLAY_LOOPING);
 414
 415     if(SUCCEEDED(hr))
 416     {
 417         device->Format = format;
 418         SetDefaultWFXChannelOrder(device);
 419         pData->thread = StartThread(DSoundProc, device);
 420         if(!pData->thread)
 421             hr = E_FAIL;
 422     }
 423
 424     if(FAILED(hr))
 425     {
 426         if (pData->DSsbuffer)
 427             IDirectSoundBuffer_Release(pData->DSsbuffer);
 428         pData->DSsbuffer = NULL;
 429         if (pData->DSpbuffer)
 430             IDirectSoundBuffer_Release(pData->DSpbuffer);
 431         pData->DSpbuffer = NULL;
 432         return ALC_FALSE;
 433     }
 434
 435     return ALC_TRUE;
 436 }
 437
 438 static void DSoundStopPlayback(ALCdevice *device)
 439 {
 440     DSoundData *pData = device->ExtraData;
 441
 442     if(!pData->thread)
 443         return;
 444
 445     pData->killNow = 1;
 446     StopThread(pData->thread);
 447     pData->thread = NULL;
 448
 449     pData->killNow = 0;
 450
 451     IDirectSoundBuffer_Release(pData->DSsbuffer);
 452     pData->DSsbuffer = NULL;
 453     if (pData->DSpbuffer)
 454         IDirectSoundBuffer_Release(pData->DSpbuffer);
 455     pData->DSpbuffer = NULL;
 456 }
 457
 458
 459 static ALCboolean DSoundOpenCapture(ALCdevice *pDevice, const ALCchar *deviceName)
 460 {
 461     (void)pDevice;
 462     (void)deviceName;
 463     return ALC_FALSE;
 464 }
 465
 466 static void DSoundCloseCapture(ALCdevice *pDevice)
 467 {
 468     (void)pDevice;
 469 }
 470
 471 static void DSoundStartCapture(ALCdevice *pDevice)
 472 {
 473     (void)pDevice;
 474 }
 475
 476 static void DSoundStopCapture(ALCdevice *pDevice)
 477 {
 478     (void)pDevice;
 479 }
 480
 481 static void DSoundCaptureSamples(ALCdevice *pDevice, ALCvoid *pBuffer, ALCuint lSamples)
 482 {
 483     (void)pDevice;
 484     (void)pBuffer;
 485     (void)lSamples;
 486 }
 487
 488 static ALCuint DSoundAvailableSamples(ALCdevice *pDevice)
 489 {
 490     (void)pDevice;
 491     return 0;
 492 }
 493
 494
 495 BackendFuncs DSoundFuncs = {
 496     DSoundOpenPlayback,
 497     DSoundClosePlayback,
 498     DSoundResetPlayback,
 499     DSoundStopPlayback,
 500     DSoundOpenCapture,
 501     DSoundCloseCapture,
 502     DSoundStartCapture,
 503     DSoundStopCapture,
 504     DSoundCaptureSamples,
 505     DSoundAvailableSamples
 506 };
 507
 508 static BOOL CALLBACK DSoundEnumDevices(LPGUID guid, LPCSTR desc, LPCSTR drvname, LPVOID data)
 509 {
 510     (void)data;
 511     (void)drvname;
 512
 513     if(guid)
 514     {
 515         char str[128];
 516         void *temp;
 517
 518         temp = realloc(DeviceList, sizeof(DevMap) * (NumDevices+1));
 519         if(temp)
 520         {
 521             DeviceList = temp;
 522
 523             snprintf(str, sizeof(str), "DirectSound Software on %s", desc);
 524             AppendAllDeviceList(str);
 525
 526             DeviceList[NumDevices].name = strdup(str);
 527             DeviceList[NumDevices].guid = *guid;
 528             NumDevices++;
 529         }
 530     }
 531
 532     return TRUE;
 533 }
 534
 535 void alcDSoundInit(BackendFuncs *FuncList)
 536 {
 537     *FuncList = DSoundFuncs;
 538 }
 539
 540 void alcDSoundDeinit(void)
 541 {
 542     ALuint i;
 543
 544     for(i = 0;i < NumDevices;++i)
 545         free(DeviceList[i].name);
 546     free(DeviceList);
 547     DeviceList = NULL;
 548     NumDevices = 0;
 549 }
 550
 551 void alcDSoundProbe(int type)
 552 {
 553     DSoundLoad();
 554     if(!ds_handle) return;
 555
 556     if(type == DEVICE_PROBE)
 557         AppendDeviceList(dsDevice);
 558     else if(type == ALL_DEVICE_PROBE)
 559     {
 560         HRESULT hr;
 561         ALuint i;
 562
 563         for(i = 0;i < NumDevices;++i)
 564             free(DeviceList[i].name);
 565         free(DeviceList);
 566         DeviceList = NULL;
 567         NumDevices = 0;
 568
 569         hr = pDirectSoundEnumerateA(DSoundEnumDevices, NULL);
 570         if(FAILED(hr))
 571             AL_PRINT("Error enumerating DirectSound devices (%#x)!\n", (unsigned int)hr);
 572     }
 573
 574     DSoundUnload();
 575 }