2 * Sample Wine Driver for Advanced Linux Sound System (ALSA)
3 * Based on version <final> of the ALSA API
5 * This file performs the initialisation and scanning of the sound subsystem.
7 * Copyright 2002 Eric Pouech
8 * 2002 Marco Pietrobono
9 * 2003 Christian Costa : WaveIn support
10 * 2006-2007 Maarten Lankhorst
12 * This library is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU Lesser General Public
14 * License as published by the Free Software Foundation; either
15 * version 2.1 of the License, or (at your option) any later version.
17 * This library is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * Lesser General Public License for more details.
22 * You should have received a copy of the GNU Lesser General Public
23 * License along with this library; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
31 #include "wine/port.h"
43 #ifdef HAVE_SYS_IOCTL_H
44 # include <sys/ioctl.h>
46 #ifdef HAVE_SYS_MMAN_H
47 # include <sys/mman.h>
58 /* ksmedia.h defines KSDATAFORMAT_SUBTYPE_PCM and KSDATAFORMAT_SUBTYPE_IEEE_FLOAT
59 * However either all files that use it will define it, or no files will
60 * The only way to solve this is by adding initguid.h here, and include the guid that way
65 #include "wine/library.h"
66 #include "wine/unicode.h"
67 #include "wine/debug.h"
69 WINE_DEFAULT_DEBUG_CHANNEL(wave);
71 /*----------------------------------------------------------------------------
72 ** ALSA_TestDeviceForWine
74 ** Test to see if a given device is sufficient for Wine.
76 static int ALSA_TestDeviceForWine(int card, int device, snd_pcm_stream_t streamtype)
78 snd_pcm_t *pcm = NULL;
81 snd_pcm_hw_params_t *hwparams;
82 const char *reason = NULL;
85 hwparams = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_hw_params_sizeof() );
87 /* Note that the plug: device masks out a lot of info, we want to avoid that */
88 sprintf(pcmname, "hw:%d,%d", card, device);
89 retcode = snd_pcm_open(&pcm, pcmname, streamtype, SND_PCM_NONBLOCK);
92 /* Note that a busy device isn't automatically disqualified */
93 if (retcode == (-1 * EBUSY))
98 retcode = snd_pcm_hw_params_any(pcm, hwparams);
101 reason = "Could not retrieve hw_params";
105 /* set the count of channels */
106 retcode = snd_pcm_hw_params_set_channels(pcm, hwparams, 2);
109 retcode = snd_pcm_hw_params_set_channels(pcm, hwparams, 1); /* If we can't open stereo, try mono; this is vital for snd_usb_audio microphones */
113 reason = "Could not set channels";
118 retcode = snd_pcm_hw_params_set_rate_near(pcm, hwparams, &rrate, 0);
121 reason = "Could not set rate";
127 reason = "Rate came back as 0";
131 /* write the parameters to device */
132 retcode = snd_pcm_hw_params(pcm, hwparams);
135 reason = "Could not set hwparams";
144 HeapFree( GetProcessHeap(), 0, hwparams );
146 if (retcode != 0 && retcode != (-1 * ENOENT))
147 TRACE("Discarding card %d/device %d: %s [%d(%s)]\n", card, device, reason, retcode, snd_strerror(retcode));
152 /*----------------------------------------------------------------------------
154 ** Retrieve a string from a registry key
156 static int ALSA_RegGetString(HKEY key, const char *value, char **bufp)
163 rc = RegQueryValueExA(key, value, NULL, &type, NULL, &bufsize);
164 if (rc != ERROR_SUCCESS)
170 *bufp = HeapAlloc(GetProcessHeap(), 0, bufsize);
174 rc = RegQueryValueExA(key, value, NULL, NULL, (LPBYTE)*bufp, &bufsize);
178 /*----------------------------------------------------------------------------
179 ** ALSA_RegGetBoolean
180 ** Get a string and interpret it as a boolean
184 Y(es), T(rue), 1, E(nabled) */
186 #define IS_OPTION_TRUE(ch) ((ch) == 'y' || (ch) == 'Y' || (ch) == 't' || (ch) == 'T' || (ch) == '1' || (ch) == 'e' || (ch) == 'E')
187 static int ALSA_RegGetBoolean(HKEY key, const char *value, BOOL *answer)
192 rc = ALSA_RegGetString(key, value, &buf);
196 if (IS_OPTION_TRUE(*buf))
199 HeapFree(GetProcessHeap(), 0, buf);
205 /*----------------------------------------------------------------------------
207 ** Get a string and interpret it as a DWORD
209 static int ALSA_RegGetInt(HKEY key, const char *value, DWORD *answer)
214 rc = ALSA_RegGetString(key, value, &buf);
218 HeapFree(GetProcessHeap(), 0, buf);
224 /* return a string duplicated on the win32 process heap, free with HeapFree */
225 static char* ALSA_strdup(const char *s) {
226 char *result = HeapAlloc(GetProcessHeap(), 0, strlen(s)+1);
233 #define ALSA_RETURN_ONFAIL(mycall) \
239 ERR("%s failed: %s(%d)\n", #mycall, snd_strerror(rc), rc); \
244 /*----------------------------------------------------------------------------
247 ** Given an ALSA PCM, figure out our HW CAPS structure info.
248 ** ctl can be null, pcm is required, as is all output parms.
251 static int ALSA_ComputeCaps(snd_ctl_t *ctl, snd_pcm_t *pcm,
252 WORD *channels, DWORD *flags, DWORD *formats, DWORD *supports)
254 snd_pcm_hw_params_t *hw_params;
255 snd_pcm_format_mask_t *fmask;
256 snd_pcm_access_mask_t *acmask;
257 unsigned int ratemin = 0;
258 unsigned int ratemax = 0;
259 unsigned int chmin = 0;
260 unsigned int chmax = 0;
263 hw_params = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_hw_params_sizeof() );
264 fmask = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_format_mask_sizeof() );
265 acmask = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_access_mask_sizeof() );
267 if ((rc = snd_pcm_hw_params_any(pcm, hw_params)) < 0) goto done;
269 snd_pcm_hw_params_get_format_mask(hw_params, fmask);
271 if ((rc = snd_pcm_hw_params_get_access_mask(hw_params, acmask)) < 0) goto done;
273 if ((rc = snd_pcm_hw_params_get_rate_min(hw_params, &ratemin, &dir)) < 0) goto done;
274 if ((rc = snd_pcm_hw_params_get_rate_max(hw_params, &ratemax, &dir)) < 0) goto done;
275 if ((rc = snd_pcm_hw_params_get_channels_min(hw_params, &chmin)) < 0) goto done;
276 if ((rc = snd_pcm_hw_params_get_channels_max(hw_params, &chmax)) < 0) goto done;
279 if ( (r) >= ratemin && ( (r) <= ratemax || ratemax == -1) ) \
281 if (snd_pcm_format_mask_test( fmask, SND_PCM_FORMAT_U8)) \
283 if (chmin <= 1 && 1 <= chmax) \
284 *formats |= WAVE_FORMAT_##v##M08; \
285 if (chmin <= 2 && 2 <= chmax) \
286 *formats |= WAVE_FORMAT_##v##S08; \
288 if (snd_pcm_format_mask_test( fmask, SND_PCM_FORMAT_S16_LE)) \
290 if (chmin <= 1 && 1 <= chmax) \
291 *formats |= WAVE_FORMAT_##v##M16; \
292 if (chmin <= 2 && 2 <= chmax) \
293 *formats |= WAVE_FORMAT_##v##S16; \
304 FIXME("Device has a minimum of %d channels\n", chmin);
307 /* FIXME: is sample accurate always true ?
308 ** Can we do WAVECAPS_PITCH, WAVECAPS_SYNC, or WAVECAPS_PLAYBACKRATE? */
309 *supports |= WAVECAPS_SAMPLEACCURATE;
311 *supports |= WAVECAPS_DIRECTSOUND;
313 /* check for volume control support */
315 if (snd_ctl_name(ctl))
318 if (snd_hctl_open(&hctl, snd_ctl_name(ctl), 0) >= 0)
321 if (!ALSA_CheckSetVolume( hctl, NULL, NULL, NULL, NULL, NULL, NULL, NULL ))
323 *supports |= WAVECAPS_VOLUME;
324 if (chmin <= 2 && 2 <= chmax)
325 *supports |= WAVECAPS_LRVOLUME;
328 snd_hctl_close(hctl);
333 *flags = DSCAPS_CERTIFIED | DSCAPS_CONTINUOUSRATE;
334 *flags |= DSCAPS_SECONDARYMONO | DSCAPS_SECONDARYSTEREO;
335 *flags |= DSCAPS_SECONDARY8BIT | DSCAPS_SECONDARY16BIT;
337 if (*formats & (WAVE_FORMAT_1M08 | WAVE_FORMAT_2M08 |
338 WAVE_FORMAT_4M08 | WAVE_FORMAT_48M08 |
339 WAVE_FORMAT_96M08 | WAVE_FORMAT_1M16 |
340 WAVE_FORMAT_2M16 | WAVE_FORMAT_4M16 |
341 WAVE_FORMAT_48M16 | WAVE_FORMAT_96M16) )
342 *flags |= DSCAPS_PRIMARYMONO;
344 if (*formats & (WAVE_FORMAT_1S08 | WAVE_FORMAT_2S08 |
345 WAVE_FORMAT_4S08 | WAVE_FORMAT_48S08 |
346 WAVE_FORMAT_96S08 | WAVE_FORMAT_1S16 |
347 WAVE_FORMAT_2S16 | WAVE_FORMAT_4S16 |
348 WAVE_FORMAT_48S16 | WAVE_FORMAT_96S16) )
349 *flags |= DSCAPS_PRIMARYSTEREO;
351 if (*formats & (WAVE_FORMAT_1M08 | WAVE_FORMAT_2M08 |
352 WAVE_FORMAT_4M08 | WAVE_FORMAT_48M08 |
353 WAVE_FORMAT_96M08 | WAVE_FORMAT_1S08 |
354 WAVE_FORMAT_2S08 | WAVE_FORMAT_4S08 |
355 WAVE_FORMAT_48S08 | WAVE_FORMAT_96S08) )
356 *flags |= DSCAPS_PRIMARY8BIT;
358 if (*formats & (WAVE_FORMAT_1M16 | WAVE_FORMAT_2M16 |
359 WAVE_FORMAT_4M16 | WAVE_FORMAT_48M16 |
360 WAVE_FORMAT_96M16 | WAVE_FORMAT_1S16 |
361 WAVE_FORMAT_2S16 | WAVE_FORMAT_4S16 |
362 WAVE_FORMAT_48S16 | WAVE_FORMAT_96S16) )
363 *flags |= DSCAPS_PRIMARY16BIT;
368 if (rc < 0) ERR("failed: %s(%d)\n", snd_strerror(rc), rc);
369 HeapFree( GetProcessHeap(), 0, hw_params );
370 HeapFree( GetProcessHeap(), 0, fmask );
371 HeapFree( GetProcessHeap(), 0, acmask );
375 /*----------------------------------------------------------------------------
376 ** ALSA_AddCommonDevice
378 ** Perform Alsa initialization common to both capture and playback
380 ** Side Effect: ww->pcname and ww->ctlname may need to be freed.
382 ** Note: this was originally coded by using snd_pcm_name(pcm), until
383 ** I discovered that with at least one version of alsa lib,
384 ** the use of a pcm named default:0 would cause snd_pcm_name() to fail.
385 ** So passing the name in is logically extraneous. Sigh.
387 static int ALSA_AddCommonDevice(snd_ctl_t *ctl, snd_pcm_t *pcm, const char *pcmname, WINE_WAVEDEV *ww)
389 snd_pcm_info_t *infop;
392 infop = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_info_sizeof() );
393 if ((rc = snd_pcm_info(pcm, infop)) < 0)
395 HeapFree( GetProcessHeap(), 0, infop );
400 ww->pcmname = ALSA_strdup(pcmname);
403 HeapFree( GetProcessHeap(), 0, infop );
407 if (ctl && snd_ctl_name(ctl))
408 ww->ctlname = ALSA_strdup(snd_ctl_name(ctl));
410 strcpy(ww->interface_name, "winealsa: ");
411 memcpy(ww->interface_name + strlen(ww->interface_name),
413 min(strlen(ww->pcmname), sizeof(ww->interface_name) - strlen("winealsa: ")));
415 strcpy(ww->ds_desc.szDrvname, "winealsa.drv");
417 memcpy(ww->ds_desc.szDesc, snd_pcm_info_get_name(infop),
418 min( (sizeof(ww->ds_desc.szDesc) - 1), strlen(snd_pcm_info_get_name(infop))) );
420 ww->ds_caps.dwMinSecondarySampleRate = DSBFREQUENCY_MIN;
421 ww->ds_caps.dwMaxSecondarySampleRate = DSBFREQUENCY_MAX;
422 ww->ds_caps.dwPrimaryBuffers = 1;
424 HeapFree( GetProcessHeap(), 0, infop );
428 /*----------------------------------------------------------------------------
431 static void ALSA_FreeDevice(WINE_WAVEDEV *ww)
433 HeapFree(GetProcessHeap(), 0, ww->pcmname);
436 HeapFree(GetProcessHeap(), 0, ww->ctlname);
440 /*----------------------------------------------------------------------------
441 ** ALSA_AddDeviceToArray
443 ** Dynamically size one of the wavein or waveout arrays of devices,
444 ** and add a fully configured device node to the array.
447 static int ALSA_AddDeviceToArray(WINE_WAVEDEV *ww, WINE_WAVEDEV **array,
448 DWORD *count, DWORD *alloced, int isdefault)
452 if (*count >= *alloced)
454 (*alloced) += WAVEDEV_ALLOC_EXTENT_SIZE;
456 *array = HeapAlloc(GetProcessHeap(), 0, sizeof(*ww) * (*alloced));
458 *array = HeapReAlloc(GetProcessHeap(), 0, *array, sizeof(*ww) * (*alloced));
466 /* If this is the default, arrange for it to be the first element */
467 if (isdefault && i > 0)
469 (*array)[*count] = (*array)[0];
479 /*----------------------------------------------------------------------------
480 ** ALSA_AddPlaybackDevice
482 ** Add a given Alsa device to Wine's internal list of Playback
485 static int ALSA_AddPlaybackDevice(snd_ctl_t *ctl, snd_pcm_t *pcm, const char *pcmname, int isdefault)
490 memset(&wwo, '\0', sizeof(wwo));
492 rc = ALSA_AddCommonDevice(ctl, pcm, pcmname, &wwo);
496 MultiByteToWideChar(CP_UNIXCP, 0, wwo.ds_desc.szDesc, -1,
497 wwo.outcaps.szPname, sizeof(wwo.outcaps.szPname)/sizeof(WCHAR));
498 wwo.outcaps.szPname[sizeof(wwo.outcaps.szPname)/sizeof(WCHAR) - 1] = '\0';
500 wwo.outcaps.wMid = MM_CREATIVE;
501 wwo.outcaps.wPid = MM_CREATIVE_SBP16_WAVEOUT;
502 wwo.outcaps.vDriverVersion = 0x0100;
504 rc = ALSA_ComputeCaps(ctl, pcm, &wwo.outcaps.wChannels, &wwo.ds_caps.dwFlags,
505 &wwo.outcaps.dwFormats, &wwo.outcaps.dwSupport);
508 WARN("Error calculating device caps for pcm [%s]\n", wwo.pcmname);
509 ALSA_FreeDevice(&wwo);
513 rc = ALSA_AddDeviceToArray(&wwo, &WOutDev, &ALSA_WodNumDevs, &ALSA_WodNumMallocedDevs, isdefault);
515 ALSA_FreeDevice(&wwo);
519 /*----------------------------------------------------------------------------
520 ** ALSA_AddCaptureDevice
522 ** Add a given Alsa device to Wine's internal list of Capture
525 static int ALSA_AddCaptureDevice(snd_ctl_t *ctl, snd_pcm_t *pcm, const char *pcmname, int isdefault)
530 memset(&wwi, '\0', sizeof(wwi));
532 rc = ALSA_AddCommonDevice(ctl, pcm, pcmname, &wwi);
536 MultiByteToWideChar(CP_UNIXCP, 0, wwi.ds_desc.szDesc, -1,
537 wwi.incaps.szPname, sizeof(wwi.incaps.szPname) / sizeof(WCHAR));
538 wwi.incaps.szPname[sizeof(wwi.incaps.szPname)/sizeof(WCHAR) - 1] = '\0';
540 wwi.incaps.wMid = MM_CREATIVE;
541 wwi.incaps.wPid = MM_CREATIVE_SBP16_WAVEOUT;
542 wwi.incaps.vDriverVersion = 0x0100;
544 rc = ALSA_ComputeCaps(ctl, pcm, &wwi.incaps.wChannels, &wwi.ds_caps.dwFlags,
545 &wwi.incaps.dwFormats, &wwi.dwSupport);
548 WARN("Error calculating device caps for pcm [%s]\n", wwi.pcmname);
549 ALSA_FreeDevice(&wwi);
553 rc = ALSA_AddDeviceToArray(&wwi, &WInDev, &ALSA_WidNumDevs, &ALSA_WidNumMallocedDevs, isdefault);
555 ALSA_FreeDevice(&wwi);
559 /*----------------------------------------------------------------------------
560 ** ALSA_CheckEnvironment
562 ** Given an Alsa style configuration node, scan its subitems
563 ** for environment variable names, and use them to find an override,
565 ** This is essentially a long and convoluted way of doing:
566 ** getenv("ALSA_CARD")
567 ** getenv("ALSA_CTL_CARD")
568 ** getenv("ALSA_PCM_CARD")
569 ** getenv("ALSA_PCM_DEVICE")
571 ** The output value is set with the atoi() of the first environment
572 ** variable found to be set, if any; otherwise, it is left alone
574 static void ALSA_CheckEnvironment(snd_config_t *node, int *outvalue)
576 snd_config_iterator_t iter;
578 for (iter = snd_config_iterator_first(node);
579 iter != snd_config_iterator_end(node);
580 iter = snd_config_iterator_next(iter))
582 snd_config_t *leaf = snd_config_iterator_entry(iter);
583 if (snd_config_get_type(leaf) == SND_CONFIG_TYPE_STRING)
586 if (snd_config_get_string(leaf, &value) >= 0)
588 char *p = getenv(value);
599 /*----------------------------------------------------------------------------
600 ** ALSA_DefaultDevices
602 ** Jump through Alsa style hoops to (hopefully) properly determine
603 ** Alsa defaults for CTL Card #, as well as for PCM Card + Device #.
604 ** We'll also find out if the user has set any of the environment
605 ** variables that specify we're to use a specific card or device.
608 ** directhw Whether to use a direct hardware device or not;
609 ** essentially switches the pcm device name from
610 ** one of 'default:X' or 'plughw:X' to "hw:X"
611 ** defctlcard If !NULL, will hold the ctl card number given
612 ** by the ALSA config as the default
613 ** defpcmcard If !NULL, default pcm card #
614 ** defpcmdev If !NULL, default pcm device #
615 ** fixedctlcard If !NULL, and the user set the appropriate
616 ** environment variable, we'll set to the
617 ** card the user specified.
618 ** fixedpcmcard If !NULL, and the user set the appropriate
619 ** environment variable, we'll set to the
620 ** card the user specified.
621 ** fixedpcmdev If !NULL, and the user set the appropriate
622 ** environment variable, we'll set to the
623 ** device the user specified.
625 ** Returns: 0 on success, < 0 on failure
627 static int ALSA_DefaultDevices(int directhw,
629 long *defpcmcard, long *defpcmdev,
631 int *fixedpcmcard, int *fixedpcmdev)
633 snd_config_t *configp;
636 ALSA_RETURN_ONFAIL(snd_config_update());
639 if (snd_config_search(snd_config, "defaults.ctl.card", &configp) >= 0)
640 snd_config_get_integer(configp, defctlcard);
643 if (snd_config_search(snd_config, "defaults.pcm.card", &configp) >= 0)
644 snd_config_get_integer(configp, defpcmcard);
647 if (snd_config_search(snd_config, "defaults.pcm.device", &configp) >= 0)
648 snd_config_get_integer(configp, defpcmdev);
653 if (snd_config_search(snd_config, "ctl.hw.@args.CARD.default.vars", &configp) >= 0)
654 ALSA_CheckEnvironment(configp, fixedctlcard);
659 sprintf(pcmsearch, "pcm.%s.@args.CARD.default.vars", directhw ? "hw" : "plughw");
660 if (snd_config_search(snd_config, pcmsearch, &configp) >= 0)
661 ALSA_CheckEnvironment(configp, fixedpcmcard);
666 sprintf(pcmsearch, "pcm.%s.@args.DEV.default.vars", directhw ? "hw" : "plughw");
667 if (snd_config_search(snd_config, pcmsearch, &configp) >= 0)
668 ALSA_CheckEnvironment(configp, fixedpcmdev);
675 /*----------------------------------------------------------------------------
678 ** Iterate through all discoverable ALSA cards, searching
679 ** for usable PCM devices.
682 ** directhw Whether to use a direct hardware device or not;
683 ** essentially switches the pcm device name from
684 ** one of 'default:X' or 'plughw:X' to "hw:X"
685 ** defctlcard Alsa's notion of the default ctl card.
686 ** defpcmcard . pcm card
687 ** defpcmdev . pcm device
688 ** fixedctlcard If not -1, then gives the value of ALSA_CTL_CARD
689 ** or equivalent environment variable
690 ** fixedpcmcard If not -1, then gives the value of ALSA_PCM_CARD
691 ** or equivalent environment variable
692 ** fixedpcmdev If not -1, then gives the value of ALSA_PCM_DEVICE
693 ** or equivalent environment variable
695 ** Returns: 0 on success, < 0 on failure
697 static int ALSA_ScanDevices(int directhw,
698 long defctlcard, long defpcmcard, long defpcmdev,
699 int fixedctlcard, int fixedpcmcard, int fixedpcmdev)
701 int card = fixedpcmcard;
702 int scan_devices = (fixedpcmdev == -1);
704 /*------------------------------------------------------------------------
705 ** Loop through all available cards
706 **----------------------------------------------------------------------*/
708 snd_card_next(&card);
710 for (; card != -1; snd_card_next(&card))
717 /*--------------------------------------------------------------------
718 ** Try to open a ctl handle; Wine doesn't absolutely require one,
719 ** but it does allow for volume control and for device scanning
720 **------------------------------------------------------------------*/
721 sprintf(ctlname, "hw:%d", fixedctlcard == -1 ? card : fixedctlcard);
722 rc = snd_ctl_open(&ctl, ctlname, SND_CTL_NONBLOCK);
726 WARN("Unable to open an alsa ctl for [%s] (pcm card %d): %s; not scanning devices\n",
727 ctlname, card, snd_strerror(rc));
728 if (fixedpcmdev == -1)
732 /*--------------------------------------------------------------------
733 ** Loop through all available devices on this card
734 **------------------------------------------------------------------*/
735 device = fixedpcmdev;
737 snd_ctl_pcm_next_device(ctl, &device);
739 for (; device != -1; snd_ctl_pcm_next_device(ctl, &device))
741 char defaultpcmname[256];
742 char plugpcmname[256];
744 char *pcmname = NULL;
747 sprintf(defaultpcmname, "default");
748 sprintf(plugpcmname, "plughw:%d,%d", card, device);
749 sprintf(hwpcmname, "hw:%d,%d", card, device);
751 /*----------------------------------------------------------------
752 ** See if it's a valid playback device
753 **--------------------------------------------------------------*/
754 if (ALSA_TestDeviceForWine(card, device, SND_PCM_STREAM_PLAYBACK) == 0)
756 /* If we can, try the default:X device name first */
757 if (! scan_devices && ! directhw)
759 pcmname = defaultpcmname;
760 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
767 pcmname = directhw ? hwpcmname : plugpcmname;
768 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
773 if (defctlcard == card && defpcmcard == card && defpcmdev == device)
774 ALSA_AddPlaybackDevice(ctl, pcm, pcmname, TRUE);
776 ALSA_AddPlaybackDevice(ctl, pcm, pcmname, FALSE);
781 TRACE("Device [%s/%s] failed to open for playback: %s\n",
782 directhw || scan_devices ? "(N/A)" : defaultpcmname,
783 directhw ? hwpcmname : plugpcmname,
788 /*----------------------------------------------------------------
789 ** See if it's a valid capture device
790 **--------------------------------------------------------------*/
791 if (ALSA_TestDeviceForWine(card, device, SND_PCM_STREAM_CAPTURE) == 0)
793 /* If we can, try the default:X device name first */
794 if (! scan_devices && ! directhw)
796 pcmname = defaultpcmname;
797 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
804 pcmname = directhw ? hwpcmname : plugpcmname;
805 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
810 if (defctlcard == card && defpcmcard == card && defpcmdev == device)
811 ALSA_AddCaptureDevice(ctl, pcm, pcmname, TRUE);
813 ALSA_AddCaptureDevice(ctl, pcm, pcmname, FALSE);
819 TRACE("Device [%s/%s] failed to open for capture: %s\n",
820 directhw || scan_devices ? "(N/A)" : defaultpcmname,
821 directhw ? hwpcmname : plugpcmname,
833 /*--------------------------------------------------------------------
834 ** If the user has set env variables such that we're pegged to
835 ** a specific card, then break after we've examined it
836 **------------------------------------------------------------------*/
837 if (fixedpcmcard != -1)
845 /*----------------------------------------------------------------------------
846 ** ALSA_PerformDefaultScan
847 ** Perform the basic default scanning for devices within ALSA.
848 ** The hope is that this routine implements a 'correct'
849 ** scanning algorithm from the Alsalib point of view.
851 ** Note that Wine, overall, has other mechanisms to
852 ** override and specify exact CTL and PCM device names,
853 ** but this routine is imagined as the default that
854 ** 99% of users will use.
856 ** The basic algorithm is simple:
857 ** Use snd_card_next to iterate cards; within cards, use
858 ** snd_ctl_pcm_next_device to iterate through devices.
860 ** We add a little complexity by taking into consideration
861 ** environment variables such as ALSA_CARD (et all), and by
862 ** detecting when a given device matches the default specified
866 ** directhw If !0, indicates we should use the hw:X
867 ** PCM interface, rather than first try
868 ** the 'default' device followed by the plughw
869 ** device. (default and plughw do fancy mixing
870 ** and audio scaling, if they are available).
871 ** devscan If TRUE, we should scan all devices, not
872 ** juse use device 0 on each card
878 ** Invokes the ALSA_AddXXXDevice functions on valid
881 static int ALSA_PerformDefaultScan(int directhw, BOOL devscan)
883 long defctlcard = -1, defpcmcard = -1, defpcmdev = -1;
884 int fixedctlcard = -1, fixedpcmcard = -1, fixedpcmdev = -1;
887 /* FIXME: We should dlsym the new snd_names_list/snd_names_list_free 1.0.9 apis,
888 ** and use them instead of this scan mechanism if they are present */
890 rc = ALSA_DefaultDevices(directhw, &defctlcard, &defpcmcard, &defpcmdev,
891 &fixedctlcard, &fixedpcmcard, &fixedpcmdev);
895 if (fixedpcmdev == -1 && ! devscan)
898 return(ALSA_ScanDevices(directhw, defctlcard, defpcmcard, defpcmdev, fixedctlcard, fixedpcmcard, fixedpcmdev));
902 /*----------------------------------------------------------------------------
903 ** ALSA_AddUserSpecifiedDevice
904 ** Add a device given from the registry
906 static int ALSA_AddUserSpecifiedDevice(const char *ctlname, const char *pcmname)
910 snd_ctl_t *ctl = NULL;
911 snd_pcm_t *pcm = NULL;
915 rc = snd_ctl_open(&ctl, ctlname, SND_CTL_NONBLOCK);
920 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
923 ALSA_AddPlaybackDevice(ctl, pcm, pcmname, FALSE);
928 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
931 ALSA_AddCaptureDevice(ctl, pcm, pcmname, FALSE);
943 /*----------------------------------------------------------------------------
945 ** Initialize the Wine Alsa sub system.
946 ** The main task is to probe for and store a list of all appropriate playback
947 ** and capture devices.
948 ** Key control points are from the registry key:
949 ** [Software\Wine\Alsa Driver]
950 ** AutoScanCards Whether or not to scan all known sound cards
951 ** and add them to Wine's list (default yes)
952 ** AutoScanDevices Whether or not to scan all known PCM devices
953 ** on each card (default no)
954 ** UseDirectHW Whether or not to use the hw:X device,
955 ** instead of the fancy default:X or plughw:X device.
956 ** The hw:X device goes straight to the hardware
957 ** without any fancy mixing or audio scaling in between.
958 ** DeviceCount If present, specifies the number of hard coded
959 ** Alsa devices to add to Wine's list; default 0
960 ** DevicePCMn Specifies the Alsa PCM devices to open for
961 ** Device n (where n goes from 1 to DeviceCount)
962 ** DeviceCTLn Specifies the Alsa control devices to open for
963 ** Device n (where n goes from 1 to DeviceCount)
965 ** Using AutoScanCards no, and then Devicexxx info
966 ** is a way to exactly specify the devices used by Wine.
969 void ALSA_WaveInit(void)
972 BOOL AutoScanCards = TRUE;
973 BOOL AutoScanDevices = FALSE;
974 BOOL UseDirectHW = FALSE;
975 DWORD DeviceCount = 0;
983 /* @@ Wine registry key: HKCU\Software\Wine\Alsa Driver */
984 rc = RegOpenKeyExA(HKEY_CURRENT_USER, "Software\\Wine\\Alsa Driver", 0, KEY_QUERY_VALUE, &key);
985 if (rc == ERROR_SUCCESS)
987 ALSA_RegGetBoolean(key, "AutoScanCards", &AutoScanCards);
988 ALSA_RegGetBoolean(key, "AutoScanDevices", &AutoScanDevices);
989 ALSA_RegGetBoolean(key, "UseDirectHW", &UseDirectHW);
990 ALSA_RegGetInt(key, "DeviceCount", &DeviceCount);
994 ALSA_PerformDefaultScan(UseDirectHW, AutoScanDevices);
996 for (i = 0; i < DeviceCount; i++)
998 char *ctl_name = NULL;
999 char *pcm_name = NULL;
1002 sprintf(value, "DevicePCM%d", i + 1);
1003 if (ALSA_RegGetString(key, value, &pcm_name) == ERROR_SUCCESS)
1005 sprintf(value, "DeviceCTL%d", i + 1);
1006 ALSA_RegGetString(key, value, &ctl_name);
1007 ALSA_AddUserSpecifiedDevice(ctl_name, pcm_name);
1010 HeapFree(GetProcessHeap(), 0, ctl_name);
1011 HeapFree(GetProcessHeap(), 0, pcm_name);
1018 #endif /* HAVE_ALSA */