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/osdep.h" 30 #include "audio.h" 31 32 #define AUDIO_CAP "dsound" 33 #include "audio_int.h" 34 #include "qemu/host-utils.h" 35 #include "qemu/module.h" 36 37 #include <windows.h> 38 #include <mmsystem.h> 39 #include <objbase.h> 40 #include <dsound.h> 41 42 #include "audio_win_int.h" 43 44 /* #define DEBUG_DSOUND */ 45 46 typedef struct { 47 LPDIRECTSOUND dsound; 48 LPDIRECTSOUNDCAPTURE dsound_capture; 49 struct audsettings settings; 50 Audiodev *dev; 51 } dsound; 52 53 typedef struct { 54 HWVoiceOut hw; 55 LPDIRECTSOUNDBUFFER dsound_buffer; 56 DWORD old_pos; 57 int first_time; 58 dsound *s; 59 #ifdef DEBUG_DSOUND 60 DWORD old_ppos; 61 DWORD played; 62 DWORD mixed; 63 #endif 64 } DSoundVoiceOut; 65 66 typedef struct { 67 HWVoiceIn hw; 68 int first_time; 69 LPDIRECTSOUNDCAPTUREBUFFER dsound_capture_buffer; 70 dsound *s; 71 } DSoundVoiceIn; 72 73 static void dsound_log_hresult (HRESULT hr) 74 { 75 const char *str = "BUG"; 76 77 switch (hr) { 78 case DS_OK: 79 str = "The method succeeded"; 80 break; 81 #ifdef DS_NO_VIRTUALIZATION 82 case DS_NO_VIRTUALIZATION: 83 str = "The buffer was created, but another 3D algorithm was substituted"; 84 break; 85 #endif 86 #ifdef DS_INCOMPLETE 87 case DS_INCOMPLETE: 88 str = "The method succeeded, but not all the optional effects were obtained"; 89 break; 90 #endif 91 #ifdef DSERR_ACCESSDENIED 92 case DSERR_ACCESSDENIED: 93 str = "The request failed because access was denied"; 94 break; 95 #endif 96 #ifdef DSERR_ALLOCATED 97 case DSERR_ALLOCATED: 98 str = "The request failed because resources, such as a priority level, were already in use by another caller"; 99 break; 100 #endif 101 #ifdef DSERR_ALREADYINITIALIZED 102 case DSERR_ALREADYINITIALIZED: 103 str = "The object is already initialized"; 104 break; 105 #endif 106 #ifdef DSERR_BADFORMAT 107 case DSERR_BADFORMAT: 108 str = "The specified wave format is not supported"; 109 break; 110 #endif 111 #ifdef DSERR_BADSENDBUFFERGUID 112 case DSERR_BADSENDBUFFERGUID: 113 str = "The GUID specified in an audiopath file does not match a valid mix-in buffer"; 114 break; 115 #endif 116 #ifdef DSERR_BUFFERLOST 117 case DSERR_BUFFERLOST: 118 str = "The buffer memory has been lost and must be restored"; 119 break; 120 #endif 121 #ifdef DSERR_BUFFERTOOSMALL 122 case DSERR_BUFFERTOOSMALL: 123 str = "The buffer size is not great enough to enable effects processing"; 124 break; 125 #endif 126 #ifdef DSERR_CONTROLUNAVAIL 127 case DSERR_CONTROLUNAVAIL: 128 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"; 129 break; 130 #endif 131 #ifdef DSERR_DS8_REQUIRED 132 case DSERR_DS8_REQUIRED: 133 str = "A DirectSound object of class CLSID_DirectSound8 or later is required for the requested functionality. For more information, see IDirectSound8 Interface"; 134 break; 135 #endif 136 #ifdef DSERR_FXUNAVAILABLE 137 case DSERR_FXUNAVAILABLE: 138 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"; 139 break; 140 #endif 141 #ifdef DSERR_GENERIC 142 case DSERR_GENERIC : 143 str = "An undetermined error occurred inside the DirectSound subsystem"; 144 break; 145 #endif 146 #ifdef DSERR_INVALIDCALL 147 case DSERR_INVALIDCALL: 148 str = "This function is not valid for the current state of this object"; 149 break; 150 #endif 151 #ifdef DSERR_INVALIDPARAM 152 case DSERR_INVALIDPARAM: 153 str = "An invalid parameter was passed to the returning function"; 154 break; 155 #endif 156 #ifdef DSERR_NOAGGREGATION 157 case DSERR_NOAGGREGATION: 158 str = "The object does not support aggregation"; 159 break; 160 #endif 161 #ifdef DSERR_NODRIVER 162 case DSERR_NODRIVER: 163 str = "No sound driver is available for use, or the given GUID is not a valid DirectSound device ID"; 164 break; 165 #endif 166 #ifdef DSERR_NOINTERFACE 167 case DSERR_NOINTERFACE: 168 str = "The requested COM interface is not available"; 169 break; 170 #endif 171 #ifdef DSERR_OBJECTNOTFOUND 172 case DSERR_OBJECTNOTFOUND: 173 str = "The requested object was not found"; 174 break; 175 #endif 176 #ifdef DSERR_OTHERAPPHASPRIO 177 case DSERR_OTHERAPPHASPRIO: 178 str = "Another application has a higher priority level, preventing this call from succeeding"; 179 break; 180 #endif 181 #ifdef DSERR_OUTOFMEMORY 182 case DSERR_OUTOFMEMORY: 183 str = "The DirectSound subsystem could not allocate sufficient memory to complete the caller's request"; 184 break; 185 #endif 186 #ifdef DSERR_PRIOLEVELNEEDED 187 case DSERR_PRIOLEVELNEEDED: 188 str = "A cooperative level of DSSCL_PRIORITY or higher is required"; 189 break; 190 #endif 191 #ifdef DSERR_SENDLOOP 192 case DSERR_SENDLOOP: 193 str = "A circular loop of send effects was detected"; 194 break; 195 #endif 196 #ifdef DSERR_UNINITIALIZED 197 case DSERR_UNINITIALIZED: 198 str = "The Initialize method has not been called or has not been called successfully before other methods were called"; 199 break; 200 #endif 201 #ifdef DSERR_UNSUPPORTED 202 case DSERR_UNSUPPORTED: 203 str = "The function called is not supported at this time"; 204 break; 205 #endif 206 default: 207 AUD_log (AUDIO_CAP, "Reason: Unknown (HRESULT %#lx)\n", hr); 208 return; 209 } 210 211 AUD_log (AUDIO_CAP, "Reason: %s\n", str); 212 } 213 214 static void GCC_FMT_ATTR (2, 3) dsound_logerr ( 215 HRESULT hr, 216 const char *fmt, 217 ... 218 ) 219 { 220 va_list ap; 221 222 va_start (ap, fmt); 223 AUD_vlog (AUDIO_CAP, fmt, ap); 224 va_end (ap); 225 226 dsound_log_hresult (hr); 227 } 228 229 static void GCC_FMT_ATTR (3, 4) dsound_logerr2 ( 230 HRESULT hr, 231 const char *typ, 232 const char *fmt, 233 ... 234 ) 235 { 236 va_list ap; 237 238 AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ); 239 va_start (ap, fmt); 240 AUD_vlog (AUDIO_CAP, fmt, ap); 241 va_end (ap); 242 243 dsound_log_hresult (hr); 244 } 245 246 static uint64_t usecs_to_bytes(struct audio_pcm_info *info, uint32_t usecs) 247 { 248 return muldiv64(usecs, info->bytes_per_second, 1000000); 249 } 250 251 #ifdef DEBUG_DSOUND 252 static void print_wave_format (WAVEFORMATEX *wfx) 253 { 254 dolog ("tag = %d\n", wfx->wFormatTag); 255 dolog ("nChannels = %d\n", wfx->nChannels); 256 dolog ("nSamplesPerSec = %ld\n", wfx->nSamplesPerSec); 257 dolog ("nAvgBytesPerSec = %ld\n", wfx->nAvgBytesPerSec); 258 dolog ("nBlockAlign = %d\n", wfx->nBlockAlign); 259 dolog ("wBitsPerSample = %d\n", wfx->wBitsPerSample); 260 dolog ("cbSize = %d\n", wfx->cbSize); 261 } 262 #endif 263 264 static int dsound_restore_out (LPDIRECTSOUNDBUFFER dsb, dsound *s) 265 { 266 HRESULT hr; 267 268 hr = IDirectSoundBuffer_Restore (dsb); 269 270 if (hr != DS_OK) { 271 dsound_logerr (hr, "Could not restore playback buffer\n"); 272 return -1; 273 } 274 return 0; 275 } 276 277 #include "dsound_template.h" 278 #define DSBTYPE_IN 279 #include "dsound_template.h" 280 #undef DSBTYPE_IN 281 282 static int dsound_get_status_out (LPDIRECTSOUNDBUFFER dsb, DWORD *statusp, 283 dsound *s) 284 { 285 HRESULT hr; 286 287 hr = IDirectSoundBuffer_GetStatus (dsb, statusp); 288 if (FAILED (hr)) { 289 dsound_logerr (hr, "Could not get playback buffer status\n"); 290 return -1; 291 } 292 293 if (*statusp & DSERR_BUFFERLOST) { 294 dsound_restore_out(dsb, s); 295 return -1; 296 } 297 298 return 0; 299 } 300 301 static int dsound_get_status_in (LPDIRECTSOUNDCAPTUREBUFFER dscb, 302 DWORD *statusp) 303 { 304 HRESULT hr; 305 306 hr = IDirectSoundCaptureBuffer_GetStatus (dscb, statusp); 307 if (FAILED (hr)) { 308 dsound_logerr (hr, "Could not get capture buffer status\n"); 309 return -1; 310 } 311 312 return 0; 313 } 314 315 static void dsound_write_sample (HWVoiceOut *hw, uint8_t *dst, int dst_len) 316 { 317 int src_len1 = dst_len; 318 int src_len2 = 0; 319 int pos = hw->rpos + dst_len; 320 struct st_sample *src1 = hw->mix_buf + hw->rpos; 321 struct st_sample *src2 = NULL; 322 323 if (pos > hw->samples) { 324 src_len1 = hw->samples - hw->rpos; 325 src2 = hw->mix_buf; 326 src_len2 = dst_len - src_len1; 327 pos = src_len2; 328 } 329 330 if (src_len1) { 331 hw->clip (dst, src1, src_len1); 332 } 333 334 if (src_len2) { 335 dst = advance (dst, src_len1 << hw->info.shift); 336 hw->clip (dst, src2, src_len2); 337 } 338 339 hw->rpos = pos % hw->samples; 340 } 341 342 static void dsound_clear_sample (HWVoiceOut *hw, LPDIRECTSOUNDBUFFER dsb, 343 dsound *s) 344 { 345 int err; 346 LPVOID p1, p2; 347 DWORD blen1, blen2, len1, len2; 348 349 err = dsound_lock_out ( 350 dsb, 351 &hw->info, 352 0, 353 hw->samples << hw->info.shift, 354 &p1, &p2, 355 &blen1, &blen2, 356 1, 357 s 358 ); 359 if (err) { 360 return; 361 } 362 363 len1 = blen1 >> hw->info.shift; 364 len2 = blen2 >> hw->info.shift; 365 366 #ifdef DEBUG_DSOUND 367 dolog ("clear %p,%ld,%ld %p,%ld,%ld\n", 368 p1, blen1, len1, 369 p2, blen2, len2); 370 #endif 371 372 if (p1 && len1) { 373 audio_pcm_info_clear_buf (&hw->info, p1, len1); 374 } 375 376 if (p2 && len2) { 377 audio_pcm_info_clear_buf (&hw->info, p2, len2); 378 } 379 380 dsound_unlock_out (dsb, p1, p2, blen1, blen2); 381 } 382 383 static int dsound_open (dsound *s) 384 { 385 HRESULT hr; 386 HWND hwnd; 387 388 hwnd = GetForegroundWindow (); 389 hr = IDirectSound_SetCooperativeLevel ( 390 s->dsound, 391 hwnd, 392 DSSCL_PRIORITY 393 ); 394 395 if (FAILED (hr)) { 396 dsound_logerr (hr, "Could not set cooperative level for window %p\n", 397 hwnd); 398 return -1; 399 } 400 401 return 0; 402 } 403 404 static int dsound_ctl_out (HWVoiceOut *hw, int cmd, ...) 405 { 406 HRESULT hr; 407 DWORD status; 408 DSoundVoiceOut *ds = (DSoundVoiceOut *) hw; 409 LPDIRECTSOUNDBUFFER dsb = ds->dsound_buffer; 410 dsound *s = ds->s; 411 412 if (!dsb) { 413 dolog ("Attempt to control voice without a buffer\n"); 414 return 0; 415 } 416 417 switch (cmd) { 418 case VOICE_ENABLE: 419 if (dsound_get_status_out (dsb, &status, s)) { 420 return -1; 421 } 422 423 if (status & DSBSTATUS_PLAYING) { 424 dolog ("warning: Voice is already playing\n"); 425 return 0; 426 } 427 428 dsound_clear_sample (hw, dsb, s); 429 430 hr = IDirectSoundBuffer_Play (dsb, 0, 0, DSBPLAY_LOOPING); 431 if (FAILED (hr)) { 432 dsound_logerr (hr, "Could not start playing buffer\n"); 433 return -1; 434 } 435 break; 436 437 case VOICE_DISABLE: 438 if (dsound_get_status_out (dsb, &status, s)) { 439 return -1; 440 } 441 442 if (status & DSBSTATUS_PLAYING) { 443 hr = IDirectSoundBuffer_Stop (dsb); 444 if (FAILED (hr)) { 445 dsound_logerr (hr, "Could not stop playing buffer\n"); 446 return -1; 447 } 448 } 449 else { 450 dolog ("warning: Voice is not playing\n"); 451 } 452 break; 453 } 454 return 0; 455 } 456 457 static size_t dsound_run_out(HWVoiceOut *hw, size_t live) 458 { 459 int err; 460 HRESULT hr; 461 DSoundVoiceOut *ds = (DSoundVoiceOut *) hw; 462 LPDIRECTSOUNDBUFFER dsb = ds->dsound_buffer; 463 size_t len; 464 int hwshift; 465 DWORD blen1, blen2; 466 DWORD len1, len2; 467 DWORD decr; 468 DWORD wpos, ppos, old_pos; 469 LPVOID p1, p2; 470 size_t bufsize; 471 dsound *s = ds->s; 472 AudiodevDsoundOptions *dso = &s->dev->u.dsound; 473 474 if (!dsb) { 475 dolog ("Attempt to run empty with playback buffer\n"); 476 return 0; 477 } 478 479 hwshift = hw->info.shift; 480 bufsize = hw->samples << hwshift; 481 482 hr = IDirectSoundBuffer_GetCurrentPosition ( 483 dsb, 484 &ppos, 485 ds->first_time ? &wpos : NULL 486 ); 487 if (FAILED (hr)) { 488 dsound_logerr (hr, "Could not get playback buffer position\n"); 489 return 0; 490 } 491 492 len = live << hwshift; 493 494 if (ds->first_time) { 495 if (dso->latency) { 496 DWORD cur_blat; 497 498 cur_blat = audio_ring_dist (wpos, ppos, bufsize); 499 ds->first_time = 0; 500 old_pos = wpos; 501 old_pos += 502 usecs_to_bytes(&hw->info, dso->latency) - cur_blat; 503 old_pos %= bufsize; 504 old_pos &= ~hw->info.align; 505 } 506 else { 507 old_pos = wpos; 508 } 509 #ifdef DEBUG_DSOUND 510 ds->played = 0; 511 ds->mixed = 0; 512 #endif 513 } 514 else { 515 if (ds->old_pos == ppos) { 516 #ifdef DEBUG_DSOUND 517 dolog ("old_pos == ppos\n"); 518 #endif 519 return 0; 520 } 521 522 #ifdef DEBUG_DSOUND 523 ds->played += audio_ring_dist (ds->old_pos, ppos, hw->bufsize); 524 #endif 525 old_pos = ds->old_pos; 526 } 527 528 if ((old_pos < ppos) && ((old_pos + len) > ppos)) { 529 len = ppos - old_pos; 530 } 531 else { 532 if ((old_pos > ppos) && ((old_pos + len) > (ppos + bufsize))) { 533 len = bufsize - old_pos + ppos; 534 } 535 } 536 537 if (audio_bug(__func__, len > bufsize)) { 538 dolog("len=%zu bufsize=%zu old_pos=%ld ppos=%ld\n", 539 len, bufsize, old_pos, ppos); 540 return 0; 541 } 542 543 len &= ~hw->info.align; 544 if (!len) { 545 return 0; 546 } 547 548 #ifdef DEBUG_DSOUND 549 ds->old_ppos = ppos; 550 #endif 551 err = dsound_lock_out ( 552 dsb, 553 &hw->info, 554 old_pos, 555 len, 556 &p1, &p2, 557 &blen1, &blen2, 558 0, 559 s 560 ); 561 if (err) { 562 return 0; 563 } 564 565 len1 = blen1 >> hwshift; 566 len2 = blen2 >> hwshift; 567 decr = len1 + len2; 568 569 if (p1 && len1) { 570 dsound_write_sample (hw, p1, len1); 571 } 572 573 if (p2 && len2) { 574 dsound_write_sample (hw, p2, len2); 575 } 576 577 dsound_unlock_out (dsb, p1, p2, blen1, blen2); 578 ds->old_pos = (old_pos + (decr << hwshift)) % bufsize; 579 580 #ifdef DEBUG_DSOUND 581 ds->mixed += decr << hwshift; 582 583 dolog ("played %lu mixed %lu diff %ld sec %f\n", 584 ds->played, 585 ds->mixed, 586 ds->mixed - ds->played, 587 abs (ds->mixed - ds->played) / (double) hw->info.bytes_per_second); 588 #endif 589 return decr; 590 } 591 592 static int dsound_ctl_in (HWVoiceIn *hw, int cmd, ...) 593 { 594 HRESULT hr; 595 DWORD status; 596 DSoundVoiceIn *ds = (DSoundVoiceIn *) hw; 597 LPDIRECTSOUNDCAPTUREBUFFER dscb = ds->dsound_capture_buffer; 598 599 if (!dscb) { 600 dolog ("Attempt to control capture voice without a buffer\n"); 601 return -1; 602 } 603 604 switch (cmd) { 605 case VOICE_ENABLE: 606 if (dsound_get_status_in (dscb, &status)) { 607 return -1; 608 } 609 610 if (status & DSCBSTATUS_CAPTURING) { 611 dolog ("warning: Voice is already capturing\n"); 612 return 0; 613 } 614 615 /* clear ?? */ 616 617 hr = IDirectSoundCaptureBuffer_Start (dscb, DSCBSTART_LOOPING); 618 if (FAILED (hr)) { 619 dsound_logerr (hr, "Could not start capturing\n"); 620 return -1; 621 } 622 break; 623 624 case VOICE_DISABLE: 625 if (dsound_get_status_in (dscb, &status)) { 626 return -1; 627 } 628 629 if (status & DSCBSTATUS_CAPTURING) { 630 hr = IDirectSoundCaptureBuffer_Stop (dscb); 631 if (FAILED (hr)) { 632 dsound_logerr (hr, "Could not stop capturing\n"); 633 return -1; 634 } 635 } 636 else { 637 dolog ("warning: Voice is not capturing\n"); 638 } 639 break; 640 } 641 return 0; 642 } 643 644 static size_t dsound_run_in(HWVoiceIn *hw) 645 { 646 int err; 647 HRESULT hr; 648 DSoundVoiceIn *ds = (DSoundVoiceIn *) hw; 649 LPDIRECTSOUNDCAPTUREBUFFER dscb = ds->dsound_capture_buffer; 650 size_t live, len, dead; 651 DWORD blen1, blen2; 652 DWORD len1, len2; 653 DWORD decr; 654 DWORD cpos, rpos; 655 LPVOID p1, p2; 656 int hwshift; 657 dsound *s = ds->s; 658 659 if (!dscb) { 660 dolog ("Attempt to run without capture buffer\n"); 661 return 0; 662 } 663 664 hwshift = hw->info.shift; 665 666 live = audio_pcm_hw_get_live_in (hw); 667 dead = hw->samples - live; 668 if (!dead) { 669 return 0; 670 } 671 672 hr = IDirectSoundCaptureBuffer_GetCurrentPosition ( 673 dscb, 674 &cpos, 675 ds->first_time ? &rpos : NULL 676 ); 677 if (FAILED (hr)) { 678 dsound_logerr (hr, "Could not get capture buffer position\n"); 679 return 0; 680 } 681 682 if (ds->first_time) { 683 ds->first_time = 0; 684 if (rpos & hw->info.align) { 685 ldebug ("warning: Misaligned capture read position %ld(%d)\n", 686 rpos, hw->info.align); 687 } 688 hw->wpos = rpos >> hwshift; 689 } 690 691 if (cpos & hw->info.align) { 692 ldebug ("warning: Misaligned capture position %ld(%d)\n", 693 cpos, hw->info.align); 694 } 695 cpos >>= hwshift; 696 697 len = audio_ring_dist (cpos, hw->wpos, hw->samples); 698 if (!len) { 699 return 0; 700 } 701 len = MIN (len, dead); 702 703 err = dsound_lock_in ( 704 dscb, 705 &hw->info, 706 hw->wpos << hwshift, 707 len << hwshift, 708 &p1, 709 &p2, 710 &blen1, 711 &blen2, 712 0, 713 s 714 ); 715 if (err) { 716 return 0; 717 } 718 719 len1 = blen1 >> hwshift; 720 len2 = blen2 >> hwshift; 721 decr = len1 + len2; 722 723 if (p1 && len1) { 724 hw->conv (hw->conv_buf + hw->wpos, p1, len1); 725 } 726 727 if (p2 && len2) { 728 hw->conv (hw->conv_buf, p2, len2); 729 } 730 731 dsound_unlock_in (dscb, p1, p2, blen1, blen2); 732 hw->wpos = (hw->wpos + decr) % hw->samples; 733 return decr; 734 } 735 736 static void dsound_audio_fini (void *opaque) 737 { 738 HRESULT hr; 739 dsound *s = opaque; 740 741 if (!s->dsound) { 742 g_free(s); 743 return; 744 } 745 746 hr = IDirectSound_Release (s->dsound); 747 if (FAILED (hr)) { 748 dsound_logerr (hr, "Could not release DirectSound\n"); 749 } 750 s->dsound = NULL; 751 752 if (!s->dsound_capture) { 753 g_free(s); 754 return; 755 } 756 757 hr = IDirectSoundCapture_Release (s->dsound_capture); 758 if (FAILED (hr)) { 759 dsound_logerr (hr, "Could not release DirectSoundCapture\n"); 760 } 761 s->dsound_capture = NULL; 762 763 g_free(s); 764 } 765 766 static void *dsound_audio_init(Audiodev *dev) 767 { 768 int err; 769 HRESULT hr; 770 dsound *s = g_malloc0(sizeof(dsound)); 771 AudiodevDsoundOptions *dso; 772 773 assert(dev->driver == AUDIODEV_DRIVER_DSOUND); 774 s->dev = dev; 775 dso = &dev->u.dsound; 776 777 if (!dso->has_latency) { 778 dso->has_latency = true; 779 dso->latency = 10000; /* 10 ms */ 780 } 781 782 hr = CoInitialize (NULL); 783 if (FAILED (hr)) { 784 dsound_logerr (hr, "Could not initialize COM\n"); 785 g_free(s); 786 return NULL; 787 } 788 789 hr = CoCreateInstance ( 790 &CLSID_DirectSound, 791 NULL, 792 CLSCTX_ALL, 793 &IID_IDirectSound, 794 (void **) &s->dsound 795 ); 796 if (FAILED (hr)) { 797 dsound_logerr (hr, "Could not create DirectSound instance\n"); 798 g_free(s); 799 return NULL; 800 } 801 802 hr = IDirectSound_Initialize (s->dsound, NULL); 803 if (FAILED (hr)) { 804 dsound_logerr (hr, "Could not initialize DirectSound\n"); 805 806 hr = IDirectSound_Release (s->dsound); 807 if (FAILED (hr)) { 808 dsound_logerr (hr, "Could not release DirectSound\n"); 809 } 810 g_free(s); 811 return NULL; 812 } 813 814 hr = CoCreateInstance ( 815 &CLSID_DirectSoundCapture, 816 NULL, 817 CLSCTX_ALL, 818 &IID_IDirectSoundCapture, 819 (void **) &s->dsound_capture 820 ); 821 if (FAILED (hr)) { 822 dsound_logerr (hr, "Could not create DirectSoundCapture instance\n"); 823 } 824 else { 825 hr = IDirectSoundCapture_Initialize (s->dsound_capture, NULL); 826 if (FAILED (hr)) { 827 dsound_logerr (hr, "Could not initialize DirectSoundCapture\n"); 828 829 hr = IDirectSoundCapture_Release (s->dsound_capture); 830 if (FAILED (hr)) { 831 dsound_logerr (hr, "Could not release DirectSoundCapture\n"); 832 } 833 s->dsound_capture = NULL; 834 } 835 } 836 837 err = dsound_open (s); 838 if (err) { 839 dsound_audio_fini (s); 840 return NULL; 841 } 842 843 return s; 844 } 845 846 static struct audio_pcm_ops dsound_pcm_ops = { 847 .init_out = dsound_init_out, 848 .fini_out = dsound_fini_out, 849 .run_out = dsound_run_out, 850 .ctl_out = dsound_ctl_out, 851 852 .init_in = dsound_init_in, 853 .fini_in = dsound_fini_in, 854 .run_in = dsound_run_in, 855 .ctl_in = dsound_ctl_in 856 }; 857 858 static struct audio_driver dsound_audio_driver = { 859 .name = "dsound", 860 .descr = "DirectSound http://wikipedia.org/wiki/DirectSound", 861 .init = dsound_audio_init, 862 .fini = dsound_audio_fini, 863 .pcm_ops = &dsound_pcm_ops, 864 .can_be_default = 1, 865 .max_voices_out = INT_MAX, 866 .max_voices_in = 1, 867 .voice_size_out = sizeof (DSoundVoiceOut), 868 .voice_size_in = sizeof (DSoundVoiceIn) 869 }; 870 871 static void register_audio_dsound(void) 872 { 873 audio_driver_register(&dsound_audio_driver); 874 } 875 type_init(register_audio_dsound); 876