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 "qemu-common.h"
  30 #include "audio.h"
  31
  32 #define AUDIO_CAP "dsound"
  33 #include "audio_int.h"
  34
  35 #define WIN32_LEAN_AND_MEAN
  36 #include <windows.h>
  37 #include <mmsystem.h>
  38 #include <objbase.h>
  39 #include <dsound.h>
  40
  41 /* #define DEBUG_DSOUND */
  42
  43 static struct {
  44     int lock_retries;
  45     int restore_retries;
  46     int getstatus_retries;
  47     int set_primary;
  48     int bufsize_in;
  49     int bufsize_out;
  50     audsettings_t settings;
  51     int latency_millis;
  52 } conf = {
  53     1,
  54     1,
  55     1,
  56     0,
  57     16384,
  58     16384,
  59     {
  60         44100,
  61         2,
  62         AUD_FMT_S16
  63     },
  64     10
  65 };
  66
  67 typedef struct {
  68     LPDIRECTSOUND dsound;
  69     LPDIRECTSOUNDCAPTURE dsound_capture;
  70     LPDIRECTSOUNDBUFFER dsound_primary_buffer;
  71     audsettings_t settings;
  72 } dsound;
  73
  74 static dsound glob_dsound;
  75
  76 typedef struct {
  77     HWVoiceOut hw;
  78     LPDIRECTSOUNDBUFFER dsound_buffer;
  79     DWORD old_pos;
  80     int first_time;
  81 #ifdef DEBUG_DSOUND
  82     DWORD old_ppos;
  83     DWORD played;
  84     DWORD mixed;
  85 #endif
  86 } DSoundVoiceOut;
  87
  88 typedef struct {
  89     HWVoiceIn hw;
  90     int first_time;
  91     LPDIRECTSOUNDCAPTUREBUFFER dsound_capture_buffer;
  92 } DSoundVoiceIn;
  93
  94 static void dsound_log_hresult (HRESULT hr)
  95 {
  96     const char *str = "BUG";
  97
  98     switch (hr) {
  99     case DS_OK:
 100         str = "The method succeeded";
 101         break;
 102 #ifdef DS_NO_VIRTUALIZATION
 103     case DS_NO_VIRTUALIZATION:
 104         str = "The buffer was created, but another 3D algorithm was substituted";
 105         break;
 106 #endif
 107 #ifdef DS_INCOMPLETE
 108     case DS_INCOMPLETE:
 109         str = "The method succeeded, but not all the optional effects were obtained";
 110         break;
 111 #endif
 112 #ifdef DSERR_ACCESSDENIED
 113     case DSERR_ACCESSDENIED:
 114         str = "The request failed because access was denied";
 115         break;
 116 #endif
 117 #ifdef DSERR_ALLOCATED
 118     case DSERR_ALLOCATED:
 119         str = "The request failed because resources, such as a priority level, were already in use by another caller";
 120         break;
 121 #endif
 122 #ifdef DSERR_ALREADYINITIALIZED
 123     case DSERR_ALREADYINITIALIZED:
 124         str = "The object is already initialized";
 125         break;
 126 #endif
 127 #ifdef DSERR_BADFORMAT
 128     case DSERR_BADFORMAT:
 129         str = "The specified wave format is not supported";
 130         break;
 131 #endif
 132 #ifdef DSERR_BADSENDBUFFERGUID
 133     case DSERR_BADSENDBUFFERGUID:
 134         str = "The GUID specified in an audiopath file does not match a valid mix-in buffer";
 135         break;
 136 #endif
 137 #ifdef DSERR_BUFFERLOST
 138     case DSERR_BUFFERLOST:
 139         str = "The buffer memory has been lost and must be restored";
 140         break;
 141 #endif
 142 #ifdef DSERR_BUFFERTOOSMALL
 143     case DSERR_BUFFERTOOSMALL:
 144         str = "The buffer size is not great enough to enable effects processing";
 145         break;
 146 #endif
 147 #ifdef DSERR_CONTROLUNAVAIL
 148     case DSERR_CONTROLUNAVAIL:
 149         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";
 150         break;
 151 #endif
 152 #ifdef DSERR_DS8_REQUIRED
 153     case DSERR_DS8_REQUIRED:
 154         str = "A DirectSound object of class CLSID_DirectSound8 or later is required for the requested functionality. For more information, see IDirectSound8 Interface";
 155         break;
 156 #endif
 157 #ifdef DSERR_FXUNAVAILABLE
 158     case DSERR_FXUNAVAILABLE:
 159         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";
 160         break;
 161 #endif
 162 #ifdef DSERR_GENERIC
 163     case DSERR_GENERIC :
 164         str = "An undetermined error occurred inside the DirectSound subsystem";
 165         break;
 166 #endif
 167 #ifdef DSERR_INVALIDCALL
 168     case DSERR_INVALIDCALL:
 169         str = "This function is not valid for the current state of this object";
 170         break;
 171 #endif
 172 #ifdef DSERR_INVALIDPARAM
 173     case DSERR_INVALIDPARAM:
 174         str = "An invalid parameter was passed to the returning function";
 175         break;
 176 #endif
 177 #ifdef DSERR_NOAGGREGATION
 178     case DSERR_NOAGGREGATION:
 179         str = "The object does not support aggregation";
 180         break;
 181 #endif
 182 #ifdef DSERR_NODRIVER
 183     case DSERR_NODRIVER:
 184         str = "No sound driver is available for use, or the given GUID is not a valid DirectSound device ID";
 185         break;
 186 #endif
 187 #ifdef DSERR_NOINTERFACE
 188     case DSERR_NOINTERFACE:
 189         str = "The requested COM interface is not available";
 190         break;
 191 #endif
 192 #ifdef DSERR_OBJECTNOTFOUND
 193     case DSERR_OBJECTNOTFOUND:
 194         str = "The requested object was not found";
 195         break;
 196 #endif
 197 #ifdef DSERR_OTHERAPPHASPRIO
 198     case DSERR_OTHERAPPHASPRIO:
 199         str = "Another application has a higher priority level, preventing this call from succeeding";
 200         break;
 201 #endif
 202 #ifdef DSERR_OUTOFMEMORY
 203     case DSERR_OUTOFMEMORY:
 204         str = "The DirectSound subsystem could not allocate sufficient memory to complete the caller's request";
 205         break;
 206 #endif
 207 #ifdef DSERR_PRIOLEVELNEEDED
 208     case DSERR_PRIOLEVELNEEDED:
 209         str = "A cooperative level of DSSCL_PRIORITY or higher is required";
 210         break;
 211 #endif
 212 #ifdef DSERR_SENDLOOP
 213     case DSERR_SENDLOOP:
 214         str = "A circular loop of send effects was detected";
 215         break;
 216 #endif
 217 #ifdef DSERR_UNINITIALIZED
 218     case DSERR_UNINITIALIZED:
 219         str = "The Initialize method has not been called or has not been called successfully before other methods were called";
 220         break;
 221 #endif
 222 #ifdef DSERR_UNSUPPORTED
 223     case DSERR_UNSUPPORTED:
 224         str = "The function called is not supported at this time";
 225         break;
 226 #endif
 227     default:
 228         AUD_log (AUDIO_CAP, "Reason: Unknown (HRESULT %#lx)\n", hr);
 229         return;
 230     }
 231
 232     AUD_log (AUDIO_CAP, "Reason: %s\n", str);
 233 }
 234
 235 static void GCC_FMT_ATTR (2, 3) dsound_logerr (
 236     HRESULT hr,
 237     const char *fmt,
 238     ...
 239     )
 240 {
 241     va_list ap;
 242
 243     va_start (ap, fmt);
 244     AUD_vlog (AUDIO_CAP, fmt, ap);
 245     va_end (ap);
 246
 247     dsound_log_hresult (hr);
 248 }
 249
 250 static void GCC_FMT_ATTR (3, 4) dsound_logerr2 (
 251     HRESULT hr,
 252     const char *typ,
 253     const char *fmt,
 254     ...
 255     )
 256 {
 257     va_list ap;
 258
 259     AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ);
 260     va_start (ap, fmt);
 261     AUD_vlog (AUDIO_CAP, fmt, ap);
 262     va_end (ap);
 263
 264     dsound_log_hresult (hr);
 265 }
 266
 267 static DWORD millis_to_bytes (struct audio_pcm_info *info, DWORD millis)
 268 {
 269     return (millis * info->bytes_per_second) / 1000;
 270 }
 271
 272 #ifdef DEBUG_DSOUND
 273 static void print_wave_format (WAVEFORMATEX *wfx)
 274 {
 275     dolog ("tag             = %d\n", wfx->wFormatTag);
 276     dolog ("nChannels       = %d\n", wfx->nChannels);
 277     dolog ("nSamplesPerSec  = %ld\n", wfx->nSamplesPerSec);
 278     dolog ("nAvgBytesPerSec = %ld\n", wfx->nAvgBytesPerSec);
 279     dolog ("nBlockAlign     = %d\n", wfx->nBlockAlign);
 280     dolog ("wBitsPerSample  = %d\n", wfx->wBitsPerSample);
 281     dolog ("cbSize          = %d\n", wfx->cbSize);
 282 }
 283 #endif
 284
 285 static int dsound_restore_out (LPDIRECTSOUNDBUFFER dsb)
 286 {
 287     HRESULT hr;
 288     int i;
 289
 290     for (i = 0; i < conf.restore_retries; ++i) {
 291         hr = IDirectSoundBuffer_Restore (dsb);
 292
 293         switch (hr) {
 294         case DS_OK:
 295             return 0;
 296
 297         case DSERR_BUFFERLOST:
 298             continue;
 299
 300         default:
 301             dsound_logerr (hr, "Could not restore playback buffer\n");
 302             return -1;
 303         }
 304     }
 305
 306     dolog ("%d attempts to restore playback buffer failed\n", i);
 307     return -1;
 308 }
 309
 310 static int waveformat_from_audio_settings (WAVEFORMATEX *wfx, audsettings_t *as)
 311 {
 312     memset (wfx, 0, sizeof (*wfx));
 313
 314     wfx->wFormatTag = WAVE_FORMAT_PCM;
 315     wfx->nChannels = as->nchannels;
 316     wfx->nSamplesPerSec = as->freq;
 317     wfx->nAvgBytesPerSec = as->freq << (as->nchannels == 2);
 318     wfx->nBlockAlign = 1 << (as->nchannels == 2);
 319     wfx->cbSize = 0;
 320
 321     switch (as->fmt) {
 322     case AUD_FMT_S8:
 323         wfx->wBitsPerSample = 8;
 324         break;
 325
 326     case AUD_FMT_U8:
 327         wfx->wBitsPerSample = 8;
 328         break;
 329
 330     case AUD_FMT_S16:
 331         wfx->wBitsPerSample = 16;
 332         wfx->nAvgBytesPerSec <<= 1;
 333         wfx->nBlockAlign <<= 1;
 334         break;
 335
 336     case AUD_FMT_U16:
 337         wfx->wBitsPerSample = 16;
 338         wfx->nAvgBytesPerSec <<= 1;
 339         wfx->nBlockAlign <<= 1;
 340         break;
 341
 342     default:
 343         dolog ("Internal logic error: Bad audio format %d\n", as->freq);
 344         return -1;
 345     }
 346
 347     return 0;
 348 }
 349
 350 static int waveformat_to_audio_settings (WAVEFORMATEX *wfx, audsettings_t *as)
 351 {
 352     if (wfx->wFormatTag != WAVE_FORMAT_PCM) {
 353         dolog ("Invalid wave format, tag is not PCM, but %d\n",
 354                wfx->wFormatTag);
 355         return -1;
 356     }
 357
 358     if (!wfx->nSamplesPerSec) {
 359         dolog ("Invalid wave format, frequency is zero\n");
 360         return -1;
 361     }
 362     as->freq = wfx->nSamplesPerSec;
 363
 364     switch (wfx->nChannels) {
 365     case 1:
 366         as->nchannels = 1;
 367         break;
 368
 369     case 2:
 370         as->nchannels = 2;
 371         break;
 372
 373     default:
 374         dolog (
 375             "Invalid wave format, number of channels is not 1 or 2, but %d\n",
 376             wfx->nChannels
 377             );
 378         return -1;
 379     }
 380
 381     switch (wfx->wBitsPerSample) {
 382     case 8:
 383         as->fmt = AUD_FMT_U8;
 384         break;
 385
 386     case 16:
 387         as->fmt = AUD_FMT_S16;
 388         break;
 389
 390     default:
 391         dolog ("Invalid wave format, bits per sample is not 8 or 16, but %d\n",
 392                wfx->wBitsPerSample);
 393         return -1;
 394     }
 395
 396     return 0;
 397 }
 398
 399 #include "dsound_template.h"
 400 #define DSBTYPE_IN
 401 #include "dsound_template.h"
 402 #undef DSBTYPE_IN
 403
 404 static int dsound_get_status_out (LPDIRECTSOUNDBUFFER dsb, DWORD *statusp)
 405 {
 406     HRESULT hr;
 407     int i;
 408
 409     for (i = 0; i < conf.getstatus_retries; ++i) {
 410         hr = IDirectSoundBuffer_GetStatus (dsb, statusp);
 411         if (FAILED (hr)) {
 412             dsound_logerr (hr, "Could not get playback buffer status\n");
 413             return -1;
 414         }
 415
 416         if (*statusp & DSERR_BUFFERLOST) {
 417             if (dsound_restore_out (dsb)) {
 418                 return -1;
 419             }
 420             continue;
 421         }
 422         break;
 423     }
 424
 425     return 0;
 426 }
 427
 428 static int dsound_get_status_in (LPDIRECTSOUNDCAPTUREBUFFER dscb,
 429                                  DWORD *statusp)
 430 {
 431     HRESULT hr;
 432
 433     hr = IDirectSoundCaptureBuffer_GetStatus (dscb, statusp);
 434     if (FAILED (hr)) {
 435         dsound_logerr (hr, "Could not get capture buffer status\n");
 436         return -1;
 437     }
 438
 439     return 0;
 440 }
 441
 442 static void dsound_write_sample (HWVoiceOut *hw, uint8_t *dst, int dst_len)
 443 {
 444     int src_len1 = dst_len;
 445     int src_len2 = 0;
 446     int pos = hw->rpos + dst_len;
 447     st_sample_t *src1 = hw->mix_buf + hw->rpos;
 448     st_sample_t *src2 = NULL;
 449
 450     if (pos > hw->samples) {
 451         src_len1 = hw->samples - hw->rpos;
 452         src2 = hw->mix_buf;
 453         src_len2 = dst_len - src_len1;
 454         pos = src_len2;
 455     }
 456
 457     if (src_len1) {
 458         hw->clip (dst, src1, src_len1);
 459     }
 460
 461     if (src_len2) {
 462         dst = advance (dst, src_len1 << hw->info.shift);
 463         hw->clip (dst, src2, src_len2);
 464     }
 465
 466     hw->rpos = pos % hw->samples;
 467 }
 468
 469 static void dsound_clear_sample (HWVoiceOut *hw, LPDIRECTSOUNDBUFFER dsb)
 470 {
 471     int err;
 472     LPVOID p1, p2;
 473     DWORD blen1, blen2, len1, len2;
 474
 475     err = dsound_lock_out (
 476         dsb,
 477         &hw->info,
 478         0,
 479         hw->samples << hw->info.shift,
 480         &p1, &p2,
 481         &blen1, &blen2,
 482         1
 483         );
 484     if (err) {
 485         return;
 486     }
 487
 488     len1 = blen1 >> hw->info.shift;
 489     len2 = blen2 >> hw->info.shift;
 490
 491 #ifdef DEBUG_DSOUND
 492     dolog ("clear %p,%ld,%ld %p,%ld,%ld\n",
 493            p1, blen1, len1,
 494            p2, blen2, len2);
 495 #endif
 496
 497     if (p1 && len1) {
 498         audio_pcm_info_clear_buf (&hw->info, p1, len1);
 499     }
 500
 501     if (p2 && len2) {
 502         audio_pcm_info_clear_buf (&hw->info, p2, len2);
 503     }
 504
 505     dsound_unlock_out (dsb, p1, p2, blen1, blen2);
 506 }
 507
 508 static void dsound_close (dsound *s)
 509 {
 510     HRESULT hr;
 511
 512     if (s->dsound_primary_buffer) {
 513         hr = IDirectSoundBuffer_Release (s->dsound_primary_buffer);
 514         if (FAILED (hr)) {
 515             dsound_logerr (hr, "Could not release primary buffer\n");
 516         }
 517         s->dsound_primary_buffer = NULL;
 518     }
 519 }
 520
 521 static int dsound_open (dsound *s)
 522 {
 523     int err;
 524     HRESULT hr;
 525     WAVEFORMATEX wfx;
 526     DSBUFFERDESC dsbd;
 527     HWND hwnd;
 528
 529     hwnd = GetForegroundWindow ();
 530     hr = IDirectSound_SetCooperativeLevel (
 531         s->dsound,
 532         hwnd,
 533         DSSCL_PRIORITY
 534         );
 535
 536     if (FAILED (hr)) {
 537         dsound_logerr (hr, "Could not set cooperative level for window %p\n",
 538                        hwnd);
 539         return -1;
 540     }
 541
 542     if (!conf.set_primary) {
 543         return 0;
 544     }
 545
 546     err = waveformat_from_audio_settings (&wfx, &conf.settings);
 547     if (err) {
 548         return -1;
 549     }
 550
 551     memset (&dsbd, 0, sizeof (dsbd));
 552     dsbd.dwSize = sizeof (dsbd);
 553     dsbd.dwFlags = DSBCAPS_PRIMARYBUFFER;
 554     dsbd.dwBufferBytes = 0;
 555     dsbd.lpwfxFormat = NULL;
 556
 557     hr = IDirectSound_CreateSoundBuffer (
 558         s->dsound,
 559         &dsbd,
 560         &s->dsound_primary_buffer,
 561         NULL
 562         );
 563     if (FAILED (hr)) {
 564         dsound_logerr (hr, "Could not create primary playback buffer\n");
 565         return -1;
 566     }
 567
 568     hr = IDirectSoundBuffer_SetFormat (s->dsound_primary_buffer, &wfx);
 569     if (FAILED (hr)) {
 570         dsound_logerr (hr, "Could not set primary playback buffer format\n");
 571     }
 572
 573     hr = IDirectSoundBuffer_GetFormat (
 574         s->dsound_primary_buffer,
 575         &wfx,
 576         sizeof (wfx),
 577         NULL
 578         );
 579     if (FAILED (hr)) {
 580         dsound_logerr (hr, "Could not get primary playback buffer format\n");
 581         goto fail0;
 582     }
 583
 584 #ifdef DEBUG_DSOUND
 585     dolog ("Primary\n");
 586     print_wave_format (&wfx);
 587 #endif
 588
 589     err = waveformat_to_audio_settings (&wfx, &s->settings);
 590     if (err) {
 591         goto fail0;
 592     }
 593
 594     return 0;
 595
 596  fail0:
 597     dsound_close (s);
 598     return -1;
 599 }
 600
 601 static int dsound_ctl_out (HWVoiceOut *hw, int cmd, ...)
 602 {
 603     HRESULT hr;
 604     DWORD status;
 605     DSoundVoiceOut *ds = (DSoundVoiceOut *) hw;
 606     LPDIRECTSOUNDBUFFER dsb = ds->dsound_buffer;
 607
 608     if (!dsb) {
 609         dolog ("Attempt to control voice without a buffer\n");
 610         return 0;
 611     }
 612
 613     switch (cmd) {
 614     case VOICE_ENABLE:
 615         if (dsound_get_status_out (dsb, &status)) {
 616             return -1;
 617         }
 618
 619         if (status & DSBSTATUS_PLAYING) {
 620             dolog ("warning: Voice is already playing\n");
 621             return 0;
 622         }
 623
 624         dsound_clear_sample (hw, dsb);
 625
 626         hr = IDirectSoundBuffer_Play (dsb, 0, 0, DSBPLAY_LOOPING);
 627         if (FAILED (hr)) {
 628             dsound_logerr (hr, "Could not start playing buffer\n");
 629             return -1;
 630         }
 631         break;
 632
 633     case VOICE_DISABLE:
 634         if (dsound_get_status_out (dsb, &status)) {
 635             return -1;
 636         }
 637
 638         if (status & DSBSTATUS_PLAYING) {
 639             hr = IDirectSoundBuffer_Stop (dsb);
 640             if (FAILED (hr)) {
 641                 dsound_logerr (hr, "Could not stop playing buffer\n");
 642                 return -1;
 643             }
 644         }
 645         else {
 646             dolog ("warning: Voice is not playing\n");
 647         }
 648         break;
 649     }
 650     return 0;
 651 }
 652
 653 static int dsound_write (SWVoiceOut *sw, void *buf, int len)
 654 {
 655     return audio_pcm_sw_write (sw, buf, len);
 656 }
 657
 658 static int dsound_run_out (HWVoiceOut *hw)
 659 {
 660     int err;
 661     HRESULT hr;
 662     DSoundVoiceOut *ds = (DSoundVoiceOut *) hw;
 663     LPDIRECTSOUNDBUFFER dsb = ds->dsound_buffer;
 664     int live, len, hwshift;
 665     DWORD blen1, blen2;
 666     DWORD len1, len2;
 667     DWORD decr;
 668     DWORD wpos, ppos, old_pos;
 669     LPVOID p1, p2;
 670     int bufsize;
 671
 672     if (!dsb) {
 673         dolog ("Attempt to run empty with playback buffer\n");
 674         return 0;
 675     }
 676
 677     hwshift = hw->info.shift;
 678     bufsize = hw->samples << hwshift;
 679
 680     live = audio_pcm_hw_get_live_out (hw);
 681
 682     hr = IDirectSoundBuffer_GetCurrentPosition (
 683         dsb,
 684         &ppos,
 685         ds->first_time ? &wpos : NULL
 686         );
 687     if (FAILED (hr)) {
 688         dsound_logerr (hr, "Could not get playback buffer position\n");
 689         return 0;
 690     }
 691
 692     len = live << hwshift;
 693
 694     if (ds->first_time) {
 695         if (conf.latency_millis) {
 696             DWORD cur_blat;
 697
 698             cur_blat = audio_ring_dist (wpos, ppos, bufsize);
 699             ds->first_time = 0;
 700             old_pos = wpos;
 701             old_pos +=
 702                 millis_to_bytes (&hw->info, conf.latency_millis) - cur_blat;
 703             old_pos %= bufsize;
 704             old_pos &= ~hw->info.align;
 705         }
 706         else {
 707             old_pos = wpos;
 708         }
 709 #ifdef DEBUG_DSOUND
 710         ds->played = 0;
 711         ds->mixed = 0;
 712 #endif
 713     }
 714     else {
 715         if (ds->old_pos == ppos) {
 716 #ifdef DEBUG_DSOUND
 717             dolog ("old_pos == ppos\n");
 718 #endif
 719             return 0;
 720         }
 721
 722 #ifdef DEBUG_DSOUND
 723         ds->played += audio_ring_dist (ds->old_pos, ppos, hw->bufsize);
 724 #endif
 725         old_pos = ds->old_pos;
 726     }
 727
 728     if ((old_pos < ppos) && ((old_pos + len) > ppos)) {
 729         len = ppos - old_pos;
 730     }
 731     else {
 732         if ((old_pos > ppos) && ((old_pos + len) > (ppos + bufsize))) {
 733             len = bufsize - old_pos + ppos;
 734         }
 735     }
 736
 737     if (audio_bug (AUDIO_FUNC, len < 0 || len > bufsize)) {
 738         dolog ("len=%d bufsize=%d old_pos=%ld ppos=%ld\n",
 739                len, bufsize, old_pos, ppos);
 740         return 0;
 741     }
 742
 743     len &= ~hw->info.align;
 744     if (!len) {
 745         return 0;
 746     }
 747
 748 #ifdef DEBUG_DSOUND
 749     ds->old_ppos = ppos;
 750 #endif
 751     err = dsound_lock_out (
 752         dsb,
 753         &hw->info,
 754         old_pos,
 755         len,
 756         &p1, &p2,
 757         &blen1, &blen2,
 758         0
 759         );
 760     if (err) {
 761         return 0;
 762     }
 763
 764     len1 = blen1 >> hwshift;
 765     len2 = blen2 >> hwshift;
 766     decr = len1 + len2;
 767
 768     if (p1 && len1) {
 769         dsound_write_sample (hw, p1, len1);
 770     }
 771
 772     if (p2 && len2) {
 773         dsound_write_sample (hw, p2, len2);
 774     }
 775
 776     dsound_unlock_out (dsb, p1, p2, blen1, blen2);
 777     ds->old_pos = (old_pos + (decr << hwshift)) % bufsize;
 778
 779 #ifdef DEBUG_DSOUND
 780     ds->mixed += decr << hwshift;
 781
 782     dolog ("played %lu mixed %lu diff %ld sec %f\n",
 783            ds->played,
 784            ds->mixed,
 785            ds->mixed - ds->played,
 786            abs (ds->mixed - ds->played) / (double) hw->info.bytes_per_second);
 787 #endif
 788     return decr;
 789 }
 790
 791 static int dsound_ctl_in (HWVoiceIn *hw, int cmd, ...)
 792 {
 793     HRESULT hr;
 794     DWORD status;
 795     DSoundVoiceIn *ds = (DSoundVoiceIn *) hw;
 796     LPDIRECTSOUNDCAPTUREBUFFER dscb = ds->dsound_capture_buffer;
 797
 798     if (!dscb) {
 799         dolog ("Attempt to control capture voice without a buffer\n");
 800         return -1;
 801     }
 802
 803     switch (cmd) {
 804     case VOICE_ENABLE:
 805         if (dsound_get_status_in (dscb, &status)) {
 806             return -1;
 807         }
 808
 809         if (status & DSCBSTATUS_CAPTURING) {
 810             dolog ("warning: Voice is already capturing\n");
 811             return 0;
 812         }
 813
 814         /* clear ?? */
 815
 816         hr = IDirectSoundCaptureBuffer_Start (dscb, DSCBSTART_LOOPING);
 817         if (FAILED (hr)) {
 818             dsound_logerr (hr, "Could not start capturing\n");
 819             return -1;
 820         }
 821         break;
 822
 823     case VOICE_DISABLE:
 824         if (dsound_get_status_in (dscb, &status)) {
 825             return -1;
 826         }
 827
 828         if (status & DSCBSTATUS_CAPTURING) {
 829             hr = IDirectSoundCaptureBuffer_Stop (dscb);
 830             if (FAILED (hr)) {
 831                 dsound_logerr (hr, "Could not stop capturing\n");
 832                 return -1;
 833             }
 834         }
 835         else {
 836             dolog ("warning: Voice is not capturing\n");
 837         }
 838         break;
 839     }
 840     return 0;
 841 }
 842
 843 static int dsound_read (SWVoiceIn *sw, void *buf, int len)
 844 {
 845     return audio_pcm_sw_read (sw, buf, len);
 846 }
 847
 848 static int dsound_run_in (HWVoiceIn *hw)
 849 {
 850     int err;
 851     HRESULT hr;
 852     DSoundVoiceIn *ds = (DSoundVoiceIn *) hw;
 853     LPDIRECTSOUNDCAPTUREBUFFER dscb = ds->dsound_capture_buffer;
 854     int live, len, dead;
 855     DWORD blen1, blen2;
 856     DWORD len1, len2;
 857     DWORD decr;
 858     DWORD cpos, rpos;
 859     LPVOID p1, p2;
 860     int hwshift;
 861
 862     if (!dscb) {
 863         dolog ("Attempt to run without capture buffer\n");
 864         return 0;
 865     }
 866
 867     hwshift = hw->info.shift;
 868
 869     live = audio_pcm_hw_get_live_in (hw);
 870     dead = hw->samples - live;
 871     if (!dead) {
 872         return 0;
 873     }
 874
 875     hr = IDirectSoundCaptureBuffer_GetCurrentPosition (
 876         dscb,
 877         &cpos,
 878         ds->first_time ? &rpos : NULL
 879         );
 880     if (FAILED (hr)) {
 881         dsound_logerr (hr, "Could not get capture buffer position\n");
 882         return 0;
 883     }
 884
 885     if (ds->first_time) {
 886         ds->first_time = 0;
 887         if (rpos & hw->info.align) {
 888             ldebug ("warning: Misaligned capture read position %ld(%d)\n",
 889                     rpos, hw->info.align);
 890         }
 891         hw->wpos = rpos >> hwshift;
 892     }
 893
 894     if (cpos & hw->info.align) {
 895         ldebug ("warning: Misaligned capture position %ld(%d)\n",
 896                 cpos, hw->info.align);
 897     }
 898     cpos >>= hwshift;
 899
 900     len = audio_ring_dist (cpos, hw->wpos, hw->samples);
 901     if (!len) {
 902         return 0;
 903     }
 904     len = audio_MIN (len, dead);
 905
 906     err = dsound_lock_in (
 907         dscb,
 908         &hw->info,
 909         hw->wpos << hwshift,
 910         len << hwshift,
 911         &p1,
 912         &p2,
 913         &blen1,
 914         &blen2,
 915         0
 916         );
 917     if (err) {
 918         return 0;
 919     }
 920
 921     len1 = blen1 >> hwshift;
 922     len2 = blen2 >> hwshift;
 923     decr = len1 + len2;
 924
 925     if (p1 && len1) {
 926         hw->conv (hw->conv_buf + hw->wpos, p1, len1, &nominal_volume);
 927     }
 928
 929     if (p2 && len2) {
 930         hw->conv (hw->conv_buf, p2, len2, &nominal_volume);
 931     }
 932
 933     dsound_unlock_in (dscb, p1, p2, blen1, blen2);
 934     hw->wpos = (hw->wpos + decr) % hw->samples;
 935     return decr;
 936 }
 937
 938 static void dsound_audio_fini (void *opaque)
 939 {
 940     HRESULT hr;
 941     dsound *s = opaque;
 942
 943     if (!s->dsound) {
 944         return;
 945     }
 946
 947     hr = IDirectSound_Release (s->dsound);
 948     if (FAILED (hr)) {
 949         dsound_logerr (hr, "Could not release DirectSound\n");
 950     }
 951     s->dsound = NULL;
 952
 953     if (!s->dsound_capture) {
 954         return;
 955     }
 956
 957     hr = IDirectSoundCapture_Release (s->dsound_capture);
 958     if (FAILED (hr)) {
 959         dsound_logerr (hr, "Could not release DirectSoundCapture\n");
 960     }
 961     s->dsound_capture = NULL;
 962 }
 963
 964 static void *dsound_audio_init (void)
 965 {
 966     int err;
 967     HRESULT hr;
 968     dsound *s = &glob_dsound;
 969
 970     hr = CoInitialize (NULL);
 971     if (FAILED (hr)) {
 972         dsound_logerr (hr, "Could not initialize COM\n");
 973         return NULL;
 974     }
 975
 976     hr = CoCreateInstance (
 977         &CLSID_DirectSound,
 978         NULL,
 979         CLSCTX_ALL,
 980         &IID_IDirectSound,
 981         (void **) &s->dsound
 982         );
 983     if (FAILED (hr)) {
 984         dsound_logerr (hr, "Could not create DirectSound instance\n");
 985         return NULL;
 986     }
 987
 988     hr = IDirectSound_Initialize (s->dsound, NULL);
 989     if (FAILED (hr)) {
 990         dsound_logerr (hr, "Could not initialize DirectSound\n");
 991
 992         hr = IDirectSound_Release (s->dsound);
 993         if (FAILED (hr)) {
 994             dsound_logerr (hr, "Could not release DirectSound\n");
 995         }
 996         s->dsound = NULL;
 997         return NULL;
 998     }
 999
1000     hr = CoCreateInstance (
1001         &CLSID_DirectSoundCapture,
1002         NULL,
1003         CLSCTX_ALL,
1004         &IID_IDirectSoundCapture,
1005         (void **) &s->dsound_capture
1006         );
1007     if (FAILED (hr)) {
1008         dsound_logerr (hr, "Could not create DirectSoundCapture instance\n");
1009     }
1010     else {
1011         hr = IDirectSoundCapture_Initialize (s->dsound_capture, NULL);
1012         if (FAILED (hr)) {
1013             dsound_logerr (hr, "Could not initialize DirectSoundCapture\n");
1014
1015             hr = IDirectSoundCapture_Release (s->dsound_capture);
1016             if (FAILED (hr)) {
1017                 dsound_logerr (hr, "Could not release DirectSoundCapture\n");
1018             }
1019             s->dsound_capture = NULL;
1020         }
1021     }
1022
1023     err = dsound_open (s);
1024     if (err) {
1025         dsound_audio_fini (s);
1026         return NULL;
1027     }
1028
1029     return s;
1030 }
1031
1032 static struct audio_option dsound_options[] = {
1033     {"LOCK_RETRIES", AUD_OPT_INT, &conf.lock_retries,
1034      "Number of times to attempt locking the buffer", NULL, 0},
1035     {"RESTOURE_RETRIES", AUD_OPT_INT, &conf.restore_retries,
1036      "Number of times to attempt restoring the buffer", NULL, 0},
1037     {"GETSTATUS_RETRIES", AUD_OPT_INT, &conf.getstatus_retries,
1038      "Number of times to attempt getting status of the buffer", NULL, 0},
1039     {"SET_PRIMARY", AUD_OPT_BOOL, &conf.set_primary,
1040      "Set the parameters of primary buffer", NULL, 0},
1041     {"LATENCY_MILLIS", AUD_OPT_INT, &conf.latency_millis,
1042      "(undocumented)", NULL, 0},
1043     {"PRIMARY_FREQ", AUD_OPT_INT, &conf.settings.freq,
1044      "Primary buffer frequency", NULL, 0},
1045     {"PRIMARY_CHANNELS", AUD_OPT_INT, &conf.settings.nchannels,
1046      "Primary buffer number of channels (1 - mono, 2 - stereo)", NULL, 0},
1047     {"PRIMARY_FMT", AUD_OPT_FMT, &conf.settings.fmt,
1048      "Primary buffer format", NULL, 0},
1049     {"BUFSIZE_OUT", AUD_OPT_INT, &conf.bufsize_out,
1050      "(undocumented)", NULL, 0},
1051     {"BUFSIZE_IN", AUD_OPT_INT, &conf.bufsize_in,
1052      "(undocumented)", NULL, 0},
1053     {NULL, 0, NULL, NULL, NULL, 0}
1054 };
1055
1056 static struct audio_pcm_ops dsound_pcm_ops = {
1057     dsound_init_out,
1058     dsound_fini_out,
1059     dsound_run_out,
1060     dsound_write,
1061     dsound_ctl_out,
1062
1063     dsound_init_in,
1064     dsound_fini_in,
1065     dsound_run_in,
1066     dsound_read,
1067     dsound_ctl_in
1068 };
1069
1070 struct audio_driver dsound_audio_driver = {
1071     INIT_FIELD (name           = ) "dsound",
1072     INIT_FIELD (descr          = )
1073     "DirectSound http://wikipedia.org/wiki/DirectSound",
1074     INIT_FIELD (options        = ) dsound_options,
1075     INIT_FIELD (init           = ) dsound_audio_init,
1076     INIT_FIELD (fini           = ) dsound_audio_fini,
1077     INIT_FIELD (pcm_ops        = ) &dsound_pcm_ops,
1078     INIT_FIELD (can_be_default = ) 1,
1079     INIT_FIELD (max_voices_out = ) INT_MAX,
1080     INIT_FIELD (max_voices_in  = ) 1,
1081     INIT_FIELD (voice_size_out = ) sizeof (DSoundVoiceOut),
1082     INIT_FIELD (voice_size_in  = ) sizeof (DSoundVoiceIn)
1083 };