audio/dsoundaudio.c

   1 /*
   2  * QEMU DirectSound audio driver
   3  *
   4  * Copyright (c) 2005 Vassili Karpov (malc)
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 /*
  26  * SEAL 1.07 by Carlos 'pel' Hasan was used as documentation
  27  */
  28
  29 #include "vl.h"
  30
  31 #define AUDIO_CAP "dsound"
  32 #include "audio_int.h"
  33
  34 #include <windows.h>
  35 #include <objbase.h>
  36 #include <dsound.h>
  37
  38 /* #define DEBUG_DSOUND */
  39
  40 static struct {
  41     int lock_retries;
  42     int restore_retries;
  43     int getstatus_retries;
  44     int set_primary;
  45     int bufsize_in;
  46     int bufsize_out;
  47     audsettings_t settings;
  48     int latency_millis;
  49 } conf = {
  50     1,
  51     1,
  52     1,
  53     0,
  54     16384,
  55     16384,
  56     {
  57         44100,
  58         2,
  59         AUD_FMT_S16
  60     },
  61     10
  62 };
  63
  64 typedef struct {
  65     LPDIRECTSOUND dsound;
  66     LPDIRECTSOUNDCAPTURE dsound_capture;
  67     LPDIRECTSOUNDBUFFER dsound_primary_buffer;
  68     audsettings_t settings;
  69 } dsound;
  70
  71 static dsound glob_dsound;
  72
  73 typedef struct {
  74     HWVoiceOut hw;
  75     LPDIRECTSOUNDBUFFER dsound_buffer;
  76     DWORD old_pos;
  77     int first_time;
  78 #ifdef DEBUG_DSOUND
  79     DWORD old_ppos;
  80     DWORD played;
  81     DWORD mixed;
  82 #endif
  83 } DSoundVoiceOut;
  84
  85 typedef struct {
  86     HWVoiceIn hw;
  87     int first_time;
  88     LPDIRECTSOUNDCAPTUREBUFFER dsound_capture_buffer;
  89 } DSoundVoiceIn;
  90
  91 static void dsound_log_hresult (HRESULT hr)
  92 {
  93     const char *str = "BUG";
  94
  95     switch (hr) {
  96     case DS_OK:
  97         str = "The method succeeded";
  98         break;
  99 #ifdef DS_NO_VIRTUALIZATION
 100     case DS_NO_VIRTUALIZATION:
 101         str = "The buffer was created, but another 3D algorithm was substituted";
 102         break;
 103 #endif
 104 #ifdef DS_INCOMPLETE
 105     case DS_INCOMPLETE:
 106         str = "The method succeeded, but not all the optional effects were obtained";
 107         break;
 108 #endif
 109 #ifdef DSERR_ACCESSDENIED
 110     case DSERR_ACCESSDENIED:
 111         str = "The request failed because access was denied";
 112         break;
 113 #endif
 114 #ifdef DSERR_ALLOCATED
 115     case DSERR_ALLOCATED:
 116         str = "The request failed because resources, such as a priority level, were already in use by another caller";
 117         break;
 118 #endif
 119 #ifdef DSERR_ALREADYINITIALIZED
 120     case DSERR_ALREADYINITIALIZED:
 121         str = "The object is already initialized";
 122         break;
 123 #endif
 124 #ifdef DSERR_BADFORMAT
 125     case DSERR_BADFORMAT:
 126         str = "The specified wave format is not supported";
 127         break;
 128 #endif
 129 #ifdef DSERR_BADSENDBUFFERGUID
 130     case DSERR_BADSENDBUFFERGUID:
 131         str = "The GUID specified in an audiopath file does not match a valid mix-in buffer";
 132         break;
 133 #endif
 134 #ifdef DSERR_BUFFERLOST
 135     case DSERR_BUFFERLOST:
 136         str = "The buffer memory has been lost and must be restored";
 137         break;
 138 #endif
 139 #ifdef DSERR_BUFFERTOOSMALL
 140     case DSERR_BUFFERTOOSMALL:
 141         str = "The buffer size is not great enough to enable effects processing";
 142         break;
 143 #endif
 144 #ifdef DSERR_CONTROLUNAVAIL
 145     case DSERR_CONTROLUNAVAIL:
 146         str = "The buffer control (volume, pan, and so on) requested by the caller is not available. Controls must be specified when the buffer is created, using the dwFlags member of DSBUFFERDESC";
 147         break;
 148 #endif
 149 #ifdef DSERR_DS8_REQUIRED
 150     case DSERR_DS8_REQUIRED:
 151         str = "A DirectSound object of class CLSID_DirectSound8 or later is required for the requested functionality. For more information, see IDirectSound8 Interface";
 152         break;
 153 #endif
 154 #ifdef DSERR_FXUNAVAILABLE
 155     case DSERR_FXUNAVAILABLE:
 156         str = "The effects requested could not be found on the system, or they are in the wrong order or in the wrong location; for example, an effect expected in hardware was found in software";
 157         break;
 158 #endif
 159 #ifdef DSERR_GENERIC
 160     case DSERR_GENERIC :
 161         str = "An undetermined error occurred inside the DirectSound subsystem";
 162         break;
 163 #endif
 164 #ifdef DSERR_INVALIDCALL
 165     case DSERR_INVALIDCALL:
 166         str = "This function is not valid for the current state of this object";
 167         break;
 168 #endif
 169 #ifdef DSERR_INVALIDPARAM
 170     case DSERR_INVALIDPARAM:
 171         str = "An invalid parameter was passed to the returning function";
 172         break;
 173 #endif
 174 #ifdef DSERR_NOAGGREGATION
 175     case DSERR_NOAGGREGATION:
 176         str = "The object does not support aggregation";
 177         break;
 178 #endif
 179 #ifdef DSERR_NODRIVER
 180     case DSERR_NODRIVER:
 181         str = "No sound driver is available for use, or the given GUID is not a valid DirectSound device ID";
 182         break;
 183 #endif
 184 #ifdef DSERR_NOINTERFACE
 185     case DSERR_NOINTERFACE:
 186         str = "The requested COM interface is not available";
 187         break;
 188 #endif
 189 #ifdef DSERR_OBJECTNOTFOUND
 190     case DSERR_OBJECTNOTFOUND:
 191         str = "The requested object was not found";
 192         break;
 193 #endif
 194 #ifdef DSERR_OTHERAPPHASPRIO
 195     case DSERR_OTHERAPPHASPRIO:
 196         str = "Another application has a higher priority level, preventing this call from succeeding";
 197         break;
 198 #endif
 199 #ifdef DSERR_OUTOFMEMORY
 200     case DSERR_OUTOFMEMORY:
 201         str = "The DirectSound subsystem could not allocate sufficient memory to complete the caller's request";
 202         break;
 203 #endif
 204 #ifdef DSERR_PRIOLEVELNEEDED
 205     case DSERR_PRIOLEVELNEEDED:
 206         str = "A cooperative level of DSSCL_PRIORITY or higher is required";
 207         break;
 208 #endif
 209 #ifdef DSERR_SENDLOOP
 210     case DSERR_SENDLOOP:
 211         str = "A circular loop of send effects was detected";
 212         break;
 213 #endif
 214 #ifdef DSERR_UNINITIALIZED
 215     case DSERR_UNINITIALIZED:
 216         str = "The Initialize method has not been called or has not been called successfully before other methods were called";
 217         break;
 218 #endif
 219 #ifdef DSERR_UNSUPPORTED
 220     case DSERR_UNSUPPORTED:
 221         str = "The function called is not supported at this time";
 222         break;
 223 #endif
 224     default:
 225         AUD_log (AUDIO_CAP, "Reason: Unknown (HRESULT %#lx)\n", hr);
 226         return;
 227     }
 228
 229     AUD_log (AUDIO_CAP, "Reason: %s\n", str);
 230 }
 231
 232 static void GCC_FMT_ATTR (2, 3) dsound_logerr (
 233     HRESULT hr,
 234     const char *fmt,
 235     ...
 236     )
 237 {
 238     va_list ap;
 239
 240     va_start (ap, fmt);
 241     AUD_vlog (AUDIO_CAP, fmt, ap);
 242     va_end (ap);
 243
 244     dsound_log_hresult (hr);
 245 }
 246
 247 static void GCC_FMT_ATTR (3, 4) dsound_logerr2 (
 248     HRESULT hr,
 249     const char *typ,
 250     const char *fmt,
 251     ...
 252     )
 253 {
 254     va_list ap;
 255
 256     AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ);
 257     va_start (ap, fmt);
 258     AUD_vlog (AUDIO_CAP, fmt, ap);
 259     va_end (ap);
 260
 261     dsound_log_hresult (hr);
 262 }
 263
 264 static DWORD millis_to_bytes (struct audio_pcm_info *info, DWORD millis)
 265 {
 266     return (millis * info->bytes_per_second) / 1000;
 267 }
 268
 269 #ifdef DEBUG_DSOUND
 270 static void print_wave_format (WAVEFORMATEX *wfx)
 271 {
 272     dolog ("tag             = %d\n", wfx->wFormatTag);
 273     dolog ("nChannels       = %d\n", wfx->nChannels);
 274     dolog ("nSamplesPerSec  = %ld\n", wfx->nSamplesPerSec);
 275     dolog ("nAvgBytesPerSec = %ld\n", wfx->nAvgBytesPerSec);
 276     dolog ("nBlockAlign     = %d\n", wfx->nBlockAlign);
 277     dolog ("wBitsPerSample  = %d\n", wfx->wBitsPerSample);
 278     dolog ("cbSize          = %d\n", wfx->cbSize);
 279 }
 280 #endif
 281
 282 static int dsound_restore_out (LPDIRECTSOUNDBUFFER dsb)
 283 {
 284     HRESULT hr;
 285     int i;
 286
 287     for (i = 0; i < conf.restore_retries; ++i) {
 288         hr = IDirectSoundBuffer_Restore (dsb);
 289
 290         switch (hr) {
 291         case DS_OK:
 292             return 0;
 293
 294         case DSERR_BUFFERLOST:
 295             continue;
 296
 297         default:
 298             dsound_logerr (hr, "Could not restore playback buffer\n");
 299             return -1;
 300         }
 301     }
 302
 303     dolog ("%d attempts to restore playback buffer failed\n", i);
 304     return -1;
 305 }
 306
 307 static int waveformat_from_audio_settings (WAVEFORMATEX *wfx, audsettings_t *as)
 308 {
 309     memset (wfx, 0, sizeof (*wfx));
 310
 311     wfx->wFormatTag = WAVE_FORMAT_PCM;
 312     wfx->nChannels = as->nchannels;
 313     wfx->nSamplesPerSec = as->freq;
 314     wfx->nAvgBytesPerSec = as->freq << (as->nchannels == 2);
 315     wfx->nBlockAlign = 1 << (as->nchannels == 2);
 316     wfx->cbSize = 0;
 317
 318     switch (as->fmt) {
 319     case AUD_FMT_S8:
 320         wfx->wBitsPerSample = 8;
 321         break;
 322
 323     case AUD_FMT_U8:
 324         wfx->wBitsPerSample = 8;
 325         break;
 326
 327     case AUD_FMT_S16:
 328         wfx->wBitsPerSample = 16;
 329         wfx->nAvgBytesPerSec <<= 1;
 330         wfx->nBlockAlign <<= 1;
 331         break;
 332
 333     case AUD_FMT_U16:
 334         wfx->wBitsPerSample = 16;
 335         wfx->nAvgBytesPerSec <<= 1;
 336         wfx->nBlockAlign <<= 1;
 337         break;
 338
 339     default:
 340         dolog ("Internal logic error: Bad audio format %d\n", as->freq);
 341         return -1;
 342     }
 343
 344     return 0;
 345 }
 346
 347 static int waveformat_to_audio_settings (WAVEFORMATEX *wfx, audsettings_t *as)
 348 {
 349     if (wfx->wFormatTag != WAVE_FORMAT_PCM) {
 350         dolog ("Invalid wave format, tag is not PCM, but %d\n",
 351                wfx->wFormatTag);
 352         return -1;
 353     }
 354
 355     if (!wfx->nSamplesPerSec) {
 356         dolog ("Invalid wave format, frequency is zero\n");
 357         return -1;
 358     }
 359     as->freq = wfx->nSamplesPerSec;
 360
 361     switch (wfx->nChannels) {
 362     case 1:
 363         as->nchannels = 1;
 364         break;
 365
 366     case 2:
 367         as->nchannels = 2;
 368         break;
 369
 370     default:
 371         dolog (
 372             "Invalid wave format, number of channels is not 1 or 2, but %d\n",
 373             wfx->nChannels
 374             );
 375         return -1;
 376     }
 377
 378     switch (wfx->wBitsPerSample) {
 379     case 8:
 380         as->fmt = AUD_FMT_U8;
 381         break;
 382
 383     case 16:
 384         as->fmt = AUD_FMT_S16;
 385         break;
 386
 387     default:
 388         dolog ("Invalid wave format, bits per sample is not 8 or 16, but %d\n",
 389                wfx->wBitsPerSample);
 390         return -1;
 391     }
 392
 393     return 0;
 394 }
 395
 396 #include "dsound_template.h"
 397 #define DSBTYPE_IN
 398 #include "dsound_template.h"
 399 #undef DSBTYPE_IN
 400
 401 static int dsound_get_status_out (LPDIRECTSOUNDBUFFER dsb, DWORD *statusp)
 402 {
 403     HRESULT hr;
 404     int i;
 405
 406     for (i = 0; i < conf.getstatus_retries; ++i) {
 407         hr = IDirectSoundBuffer_GetStatus (dsb, statusp);
 408         if (FAILED (hr)) {
 409             dsound_logerr (hr, "Could not get playback buffer status\n");
 410             return -1;
 411         }
 412
 413         if (*statusp & DSERR_BUFFERLOST) {
 414             if (dsound_restore_out (dsb)) {
 415                 return -1;
 416             }
 417             continue;
 418         }
 419         break;
 420     }
 421
 422     return 0;
 423 }
 424
 425 static int dsound_get_status_in (LPDIRECTSOUNDCAPTUREBUFFER dscb,
 426                                  DWORD *statusp)
 427 {
 428     HRESULT hr;
 429
 430     hr = IDirectSoundCaptureBuffer_GetStatus (dscb, statusp);
 431     if (FAILED (hr)) {
 432         dsound_logerr (hr, "Could not get capture buffer status\n");
 433         return -1;
 434     }
 435
 436     return 0;
 437 }
 438
 439 static void dsound_write_sample (HWVoiceOut *hw, uint8_t *dst, int dst_len)
 440 {
 441     int src_len1 = dst_len;
 442     int src_len2 = 0;
 443     int pos = hw->rpos + dst_len;
 444     st_sample_t *src1 = hw->mix_buf + hw->rpos;
 445     st_sample_t *src2 = NULL;
 446
 447     if (pos > hw->samples) {
 448         src_len1 = hw->samples - hw->rpos;
 449         src2 = hw->mix_buf;
 450         src_len2 = dst_len - src_len1;
 451         pos = src_len2;
 452     }
 453
 454     if (src_len1) {
 455         hw->clip (dst, src1, src_len1);
 456         mixeng_clear (src1, src_len1);
 457     }
 458
 459     if (src_len2) {
 460         dst = advance (dst, src_len1 << hw->info.shift);
 461         hw->clip (dst, src2, src_len2);
 462         mixeng_clear (src2, src_len2);
 463     }
 464
 465     hw->rpos = pos % hw->samples;
 466 }
 467
 468 static void dsound_clear_sample (HWVoiceOut *hw, LPDIRECTSOUNDBUFFER dsb)
 469 {
 470     int err;
 471     LPVOID p1, p2;
 472     DWORD blen1, blen2, len1, len2;
 473
 474     err = dsound_lock_out (
 475         dsb,
 476         &hw->info,
 477         0,
 478         hw->samples << hw->info.shift,
 479         &p1, &p2,
 480         &blen1, &blen2,
 481         1
 482         );
 483     if (err) {
 484         return;
 485     }
 486
 487     len1 = blen1 >> hw->info.shift;
 488     len2 = blen2 >> hw->info.shift;
 489
 490 #ifdef DEBUG_DSOUND
 491     dolog ("clear %p,%ld,%ld %p,%ld,%ld\n",
 492            p1, blen1, len1,
 493            p2, blen2, len2);
 494 #endif
 495
 496     if (p1 && len1) {
 497         audio_pcm_info_clear_buf (&hw->info, p1, len1);
 498     }
 499
 500     if (p2 && len2) {
 501         audio_pcm_info_clear_buf (&hw->info, p2, len2);
 502     }
 503
 504     dsound_unlock_out (dsb, p1, p2, blen1, blen2);
 505 }
 506
 507 static void dsound_close (dsound *s)
 508 {
 509     HRESULT hr;
 510
 511     if (s->dsound_primary_buffer) {
 512         hr = IDirectSoundBuffer_Release (s->dsound_primary_buffer);
 513         if (FAILED (hr)) {
 514             dsound_logerr (hr, "Could not release primary buffer\n");
 515         }
 516         s->dsound_primary_buffer = NULL;
 517     }
 518 }
 519
 520 static int dsound_open (dsound *s)
 521 {
 522     int err;
 523     HRESULT hr;
 524     WAVEFORMATEX wfx;
 525     DSBUFFERDESC dsbd;
 526     HWND hwnd;
 527
 528     hwnd = GetForegroundWindow ();
 529     hr = IDirectSound_SetCooperativeLevel (
 530         s->dsound,
 531         hwnd,
 532         DSSCL_PRIORITY
 533         );
 534
 535     if (FAILED (hr)) {
 536         dsound_logerr (hr, "Could not set cooperative level for window %p\n",
 537                        hwnd);
 538         return -1;
 539     }
 540
 541     if (!conf.set_primary) {
 542         return 0;
 543     }
 544
 545     err = waveformat_from_audio_settings (&wfx, &conf.settings);
 546     if (err) {
 547         return -1;
 548     }
 549
 550     memset (&dsbd, 0, sizeof (dsbd));
 551     dsbd.dwSize = sizeof (dsbd);
 552     dsbd.dwFlags = DSBCAPS_PRIMARYBUFFER;
 553     dsbd.dwBufferBytes = 0;
 554     dsbd.lpwfxFormat = NULL;
 555
 556     hr = IDirectSound_CreateSoundBuffer (
 557         s->dsound,
 558         &dsbd,
 559         &s->dsound_primary_buffer,
 560         NULL
 561         );
 562     if (FAILED (hr)) {
 563         dsound_logerr (hr, "Could not create primary playback buffer\n");
 564         return -1;
 565     }
 566
 567     hr = IDirectSoundBuffer_SetFormat (s->dsound_primary_buffer, &wfx);
 568     if (FAILED (hr)) {
 569         dsound_logerr (hr, "Could not set primary playback buffer format\n");
 570     }
 571
 572     hr = IDirectSoundBuffer_GetFormat (
 573         s->dsound_primary_buffer,
 574         &wfx,
 575         sizeof (wfx),
 576         NULL
 577         );
 578     if (FAILED (hr)) {
 579         dsound_logerr (hr, "Could not get primary playback buffer format\n");
 580         goto fail0;
 581     }
 582
 583 #ifdef DEBUG_DSOUND
 584     dolog ("Primary\n");
 585     print_wave_format (&wfx);
 586 #endif
 587
 588     err = waveformat_to_audio_settings (&wfx, &s->settings);
 589     if (err) {
 590         goto fail0;
 591     }
 592
 593     return 0;
 594
 595  fail0:
 596     dsound_close (s);
 597     return -1;
 598 }
 599
 600 static int dsound_ctl_out (HWVoiceOut *hw, int cmd, ...)
 601 {
 602     HRESULT hr;
 603     DWORD status;
 604     DSoundVoiceOut *ds = (DSoundVoiceOut *) hw;
 605     LPDIRECTSOUNDBUFFER dsb = ds->dsound_buffer;
 606
 607     if (!dsb) {
 608         dolog ("Attempt to control voice without a buffer\n");
 609         return 0;
 610     }
 611
 612     switch (cmd) {
 613     case VOICE_ENABLE:
 614         if (dsound_get_status_out (dsb, &status)) {
 615             return -1;
 616         }
 617
 618         if (status & DSBSTATUS_PLAYING) {
 619             dolog ("warning: Voice is already playing\n");
 620             return 0;
 621         }
 622
 623         dsound_clear_sample (hw, dsb);
 624
 625         hr = IDirectSoundBuffer_Play (dsb, 0, 0, DSBPLAY_LOOPING);
 626         if (FAILED (hr)) {
 627             dsound_logerr (hr, "Could not start playing buffer\n");
 628             return -1;
 629         }
 630         break;
 631
 632     case VOICE_DISABLE:
 633         if (dsound_get_status_out (dsb, &status)) {
 634             return -1;
 635         }
 636
 637         if (status & DSBSTATUS_PLAYING) {
 638             hr = IDirectSoundBuffer_Stop (dsb);
 639             if (FAILED (hr)) {
 640                 dsound_logerr (hr, "Could not stop playing buffer\n");
 641                 return -1;
 642             }
 643         }
 644         else {
 645             dolog ("warning: Voice is not playing\n");
 646         }
 647         break;
 648     }
 649     return 0;
 650 }
 651
 652 static int dsound_write (SWVoiceOut *sw, void *buf, int len)
 653 {
 654     return audio_pcm_sw_write (sw, buf, len);
 655 }
 656
 657 static int dsound_run_out (HWVoiceOut *hw)
 658 {
 659     int err;
 660     HRESULT hr;
 661     DSoundVoiceOut *ds = (DSoundVoiceOut *) hw;
 662     LPDIRECTSOUNDBUFFER dsb = ds->dsound_buffer;
 663     int live, len, hwshift;
 664     DWORD blen1, blen2;
 665     DWORD len1, len2;
 666     DWORD decr;
 667     DWORD wpos, ppos, old_pos;
 668     LPVOID p1, p2;
 669     int bufsize;
 670
 671     if (!dsb) {
 672         dolog ("Attempt to run empty with playback buffer\n");
 673         return 0;
 674     }
 675
 676     hwshift = hw->info.shift;
 677     bufsize = hw->samples << hwshift;
 678
 679     live = audio_pcm_hw_get_live_out (hw);
 680
 681     hr = IDirectSoundBuffer_GetCurrentPosition (
 682         dsb,
 683         &ppos,
 684         ds->first_time ? &wpos : NULL
 685         );
 686     if (FAILED (hr)) {
 687         dsound_logerr (hr, "Could not get playback buffer position\n");
 688         return 0;
 689     }
 690
 691     len = live << hwshift;
 692
 693     if (ds->first_time) {
 694         if (conf.latency_millis) {
 695             DWORD cur_blat;
 696
 697             cur_blat = audio_ring_dist (wpos, ppos, bufsize);
 698             ds->first_time = 0;
 699             old_pos = wpos;
 700             old_pos +=
 701                 millis_to_bytes (&hw->info, conf.latency_millis) - cur_blat;
 702             old_pos %= bufsize;
 703             old_pos &= ~hw->info.align;
 704         }
 705         else {
 706             old_pos = wpos;
 707         }
 708 #ifdef DEBUG_DSOUND
 709         ds->played = 0;
 710         ds->mixed = 0;
 711 #endif
 712     }
 713     else {
 714         if (ds->old_pos == ppos) {
 715 #ifdef DEBUG_DSOUND
 716             dolog ("old_pos == ppos\n");
 717 #endif
 718             return 0;
 719         }
 720
 721 #ifdef DEBUG_DSOUND
 722         ds->played += audio_ring_dist (ds->old_pos, ppos, hw->bufsize);
 723 #endif
 724         old_pos = ds->old_pos;
 725     }
 726
 727     if ((old_pos < ppos) && ((old_pos + len) > ppos)) {
 728         len = ppos - old_pos;
 729     }
 730     else {
 731         if ((old_pos > ppos) && ((old_pos + len) > (ppos + bufsize))) {
 732             len = bufsize - old_pos + ppos;
 733         }
 734     }
 735
 736     if (audio_bug (AUDIO_FUNC, len < 0 || len > bufsize)) {
 737         dolog ("len=%d bufsize=%d old_pos=%ld ppos=%ld\n",
 738                len, bufsize, old_pos, ppos);
 739         return 0;
 740     }
 741
 742     len &= ~hw->info.align;
 743     if (!len) {
 744         return 0;
 745     }
 746
 747 #ifdef DEBUG_DSOUND
 748     ds->old_ppos = ppos;
 749 #endif
 750     err = dsound_lock_out (
 751         dsb,
 752         &hw->info,
 753         old_pos,
 754         len,
 755         &p1, &p2,
 756         &blen1, &blen2,
 757         0
 758         );
 759     if (err) {
 760         return 0;
 761     }
 762
 763     len1 = blen1 >> hwshift;
 764     len2 = blen2 >> hwshift;
 765     decr = len1 + len2;
 766
 767     if (p1 && len1) {
 768         dsound_write_sample (hw, p1, len1);
 769     }
 770
 771     if (p2 && len2) {
 772         dsound_write_sample (hw, p2, len2);
 773     }
 774
 775     dsound_unlock_out (dsb, p1, p2, blen1, blen2);
 776     ds->old_pos = (old_pos + (decr << hwshift)) % bufsize;
 777
 778 #ifdef DEBUG_DSOUND
 779     ds->mixed += decr << hwshift;
 780
 781     dolog ("played %lu mixed %lu diff %ld sec %f\n",
 782            ds->played,
 783            ds->mixed,
 784            ds->mixed - ds->played,
 785            abs (ds->mixed - ds->played) / (double) hw->info.bytes_per_second);
 786 #endif
 787     return decr;
 788 }
 789
 790 static int dsound_ctl_in (HWVoiceIn *hw, int cmd, ...)
 791 {
 792     HRESULT hr;
 793     DWORD status;
 794     DSoundVoiceIn *ds = (DSoundVoiceIn *) hw;
 795     LPDIRECTSOUNDCAPTUREBUFFER dscb = ds->dsound_capture_buffer;
 796
 797     if (!dscb) {
 798         dolog ("Attempt to control capture voice without a buffer\n");
 799         return -1;
 800     }
 801
 802     switch (cmd) {
 803     case VOICE_ENABLE:
 804         if (dsound_get_status_in (dscb, &status)) {
 805             return -1;
 806         }
 807
 808         if (status & DSCBSTATUS_CAPTURING) {
 809             dolog ("warning: Voice is already capturing\n");
 810             return 0;
 811         }
 812
 813         /* clear ?? */
 814
 815         hr = IDirectSoundCaptureBuffer_Start (dscb, DSCBSTART_LOOPING);
 816         if (FAILED (hr)) {
 817             dsound_logerr (hr, "Could not start capturing\n");
 818             return -1;
 819         }
 820         break;
 821
 822     case VOICE_DISABLE:
 823         if (dsound_get_status_in (dscb, &status)) {
 824             return -1;
 825         }
 826
 827         if (status & DSCBSTATUS_CAPTURING) {
 828             hr = IDirectSoundCaptureBuffer_Stop (dscb);
 829             if (FAILED (hr)) {
 830                 dsound_logerr (hr, "Could not stop capturing\n");
 831                 return -1;
 832             }
 833         }
 834         else {
 835             dolog ("warning: Voice is not capturing\n");
 836         }
 837         break;
 838     }
 839     return 0;
 840 }
 841
 842 static int dsound_read (SWVoiceIn *sw, void *buf, int len)
 843 {
 844     return audio_pcm_sw_read (sw, buf, len);
 845 }
 846
 847 static int dsound_run_in (HWVoiceIn *hw)
 848 {
 849     int err;
 850     HRESULT hr;
 851     DSoundVoiceIn *ds = (DSoundVoiceIn *) hw;
 852     LPDIRECTSOUNDCAPTUREBUFFER dscb = ds->dsound_capture_buffer;
 853     int live, len, dead;
 854     DWORD blen1, blen2;
 855     DWORD len1, len2;
 856     DWORD decr;
 857     DWORD cpos, rpos;
 858     LPVOID p1, p2;
 859     int hwshift;
 860
 861     if (!dscb) {
 862         dolog ("Attempt to run without capture buffer\n");
 863         return 0;
 864     }
 865
 866     hwshift = hw->info.shift;
 867
 868     live = audio_pcm_hw_get_live_in (hw);
 869     dead = hw->samples - live;
 870     if (!dead) {
 871         return 0;
 872     }
 873
 874     hr = IDirectSoundCaptureBuffer_GetCurrentPosition (
 875         dscb,
 876         &cpos,
 877         ds->first_time ? &rpos : NULL
 878         );
 879     if (FAILED (hr)) {
 880         dsound_logerr (hr, "Could not get capture buffer position\n");
 881         return 0;
 882     }
 883
 884     if (ds->first_time) {
 885         ds->first_time = 0;
 886         if (rpos & hw->info.align) {
 887             ldebug ("warning: Misaligned capture read position %ld(%d)\n",
 888                     rpos, hw->info.align);
 889         }
 890         hw->wpos = rpos >> hwshift;
 891     }
 892
 893     if (cpos & hw->info.align) {
 894         ldebug ("warning: Misaligned capture position %ld(%d)\n",
 895                 cpos, hw->info.align);
 896     }
 897     cpos >>= hwshift;
 898
 899     len = audio_ring_dist (cpos, hw->wpos, hw->samples);
 900     if (!len) {
 901         return 0;
 902     }
 903     len = audio_MIN (len, dead);
 904
 905     err = dsound_lock_in (
 906         dscb,
 907         &hw->info,
 908         hw->wpos << hwshift,
 909         len << hwshift,
 910         &p1,
 911         &p2,
 912         &blen1,
 913         &blen2,
 914         0
 915         );
 916     if (err) {
 917         return 0;
 918     }
 919
 920     len1 = blen1 >> hwshift;
 921     len2 = blen2 >> hwshift;
 922     decr = len1 + len2;
 923
 924     if (p1 && len1) {
 925         hw->conv (hw->conv_buf + hw->wpos, p1, len1, &nominal_volume);
 926     }
 927
 928     if (p2 && len2) {
 929         hw->conv (hw->conv_buf, p2, len2, &nominal_volume);
 930     }
 931
 932     dsound_unlock_in (dscb, p1, p2, blen1, blen2);
 933     hw->wpos = (hw->wpos + decr) % hw->samples;
 934     return decr;
 935 }
 936
 937 static void dsound_audio_fini (void *opaque)
 938 {
 939     HRESULT hr;
 940     dsound *s = opaque;
 941
 942     if (!s->dsound) {
 943         return;
 944     }
 945
 946     hr = IDirectSound_Release (s->dsound);
 947     if (FAILED (hr)) {
 948         dsound_logerr (hr, "Could not release DirectSound\n");
 949     }
 950     s->dsound = NULL;
 951
 952     if (!s->dsound_capture) {
 953         return;
 954     }
 955
 956     hr = IDirectSoundCapture_Release (s->dsound_capture);
 957     if (FAILED (hr)) {
 958         dsound_logerr (hr, "Could not release DirectSoundCapture\n");
 959     }
 960     s->dsound_capture = NULL;
 961 }
 962
 963 static void *dsound_audio_init (void)
 964 {
 965     int err;
 966     HRESULT hr;
 967     dsound *s = &glob_dsound;
 968
 969     hr = CoInitialize (NULL);
 970     if (FAILED (hr)) {
 971         dsound_logerr (hr, "Could not initialize COM\n");
 972         return NULL;
 973     }
 974
 975     hr = CoCreateInstance (
 976         &CLSID_DirectSound,
 977         NULL,
 978         CLSCTX_ALL,
 979         &IID_IDirectSound,
 980         (void **) &s->dsound
 981         );
 982     if (FAILED (hr)) {
 983         dsound_logerr (hr, "Could not create DirectSound instance\n");
 984         return NULL;
 985     }
 986
 987     hr = IDirectSound_Initialize (s->dsound, NULL);
 988     if (FAILED (hr)) {
 989         dsound_logerr (hr, "Could not initialize DirectSound\n");
 990         return NULL;
 991     }
 992
 993     hr = CoCreateInstance (
 994         &CLSID_DirectSoundCapture,
 995         NULL,
 996         CLSCTX_ALL,
 997         &IID_IDirectSoundCapture,
 998         (void **) &s->dsound_capture
 999         );
1000     if (FAILED (hr)) {
1001         dsound_logerr (hr, "Could not create DirectSoundCapture instance\n");
1002     }
1003     else {
1004         hr = IDirectSoundCapture_Initialize (s->dsound_capture, NULL);
1005         if (FAILED (hr)) {
1006             dsound_logerr (hr, "Could not initialize DirectSoundCapture\n");
1007
1008             hr = IDirectSoundCapture_Release (s->dsound_capture);
1009             if (FAILED (hr)) {
1010                 dsound_logerr (hr, "Could not release DirectSoundCapture\n");
1011             }
1012             s->dsound_capture = NULL;
1013         }
1014     }
1015
1016     err = dsound_open (s);
1017     if (err) {
1018         dsound_audio_fini (s);
1019         return NULL;
1020     }
1021
1022     return s;
1023 }
1024
1025 static struct audio_option dsound_options[] = {
1026     {"LOCK_RETRIES", AUD_OPT_INT, &conf.lock_retries,
1027      "Number of times to attempt locking the buffer", NULL, 0},
1028     {"RESTOURE_RETRIES", AUD_OPT_INT, &conf.restore_retries,
1029      "Number of times to attempt restoring the buffer", NULL, 0},
1030     {"GETSTATUS_RETRIES", AUD_OPT_INT, &conf.getstatus_retries,
1031      "Number of times to attempt getting status of the buffer", NULL, 0},
1032     {"SET_PRIMARY", AUD_OPT_BOOL, &conf.set_primary,
1033      "Set the parameters of primary buffer", NULL, 0},
1034     {"LATENCY_MILLIS", AUD_OPT_INT, &conf.latency_millis,
1035      "(undocumented)", NULL, 0},
1036     {"PRIMARY_FREQ", AUD_OPT_INT, &conf.settings.freq,
1037      "Primary buffer frequency", NULL, 0},
1038     {"PRIMARY_CHANNELS", AUD_OPT_INT, &conf.settings.nchannels,
1039      "Primary buffer number of channels (1 - mono, 2 - stereo)", NULL, 0},
1040     {"PRIMARY_FMT", AUD_OPT_FMT, &conf.settings.fmt,
1041      "Primary buffer format", NULL, 0},
1042     {"BUFSIZE_OUT", AUD_OPT_INT, &conf.bufsize_out,
1043      "(undocumented)", NULL, 0},
1044     {"BUFSIZE_IN", AUD_OPT_INT, &conf.bufsize_in,
1045      "(undocumented)", NULL, 0},
1046     {NULL, 0, NULL, NULL, NULL, 0}
1047 };
1048
1049 static struct audio_pcm_ops dsound_pcm_ops = {
1050     dsound_init_out,
1051     dsound_fini_out,
1052     dsound_run_out,
1053     dsound_write,
1054     dsound_ctl_out,
1055
1056     dsound_init_in,
1057     dsound_fini_in,
1058     dsound_run_in,
1059     dsound_read,
1060     dsound_ctl_in
1061 };
1062
1063 struct audio_driver dsound_audio_driver = {
1064     INIT_FIELD (name           = ) "dsound",
1065     INIT_FIELD (descr          = )
1066     "DirectSound http://wikipedia.org/wiki/DirectSound",
1067     INIT_FIELD (options        = ) dsound_options,
1068     INIT_FIELD (init           = ) dsound_audio_init,
1069     INIT_FIELD (fini           = ) dsound_audio_fini,
1070     INIT_FIELD (pcm_ops        = ) &dsound_pcm_ops,
1071     INIT_FIELD (can_be_default = ) 1,
1072     INIT_FIELD (max_voices_out = ) INT_MAX,
1073     INIT_FIELD (max_voices_in  = ) 1,
1074     INIT_FIELD (voice_size_out = ) sizeof (DSoundVoiceOut),
1075     INIT_FIELD (voice_size_in  = ) sizeof (DSoundVoiceIn)
1076 };