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 reason = "Could not set channels";
114 retcode = snd_pcm_hw_params_set_rate_near(pcm, hwparams, &rrate, 0);
117 reason = "Could not set rate";
123 reason = "Rate came back as 0";
127 /* write the parameters to device */
128 retcode = snd_pcm_hw_params(pcm, hwparams);
131 reason = "Could not set hwparams";
140 HeapFree( GetProcessHeap(), 0, hwparams );
142 if (retcode != 0 && retcode != (-1 * ENOENT))
143 TRACE("Discarding card %d/device %d: %s [%d(%s)]\n", card, device, reason, retcode, snd_strerror(retcode));
148 /*----------------------------------------------------------------------------
150 ** Retrieve a string from a registry key
152 static int ALSA_RegGetString(HKEY key, const char *value, char **bufp)
159 rc = RegQueryValueExA(key, value, NULL, &type, NULL, &bufsize);
160 if (rc != ERROR_SUCCESS)
166 *bufp = HeapAlloc(GetProcessHeap(), 0, bufsize);
170 rc = RegQueryValueExA(key, value, NULL, NULL, (LPBYTE)*bufp, &bufsize);
174 /*----------------------------------------------------------------------------
175 ** ALSA_RegGetBoolean
176 ** Get a string and interpret it as a boolean
180 Y(es), T(rue), 1, E(nabled) */
182 #define IS_OPTION_TRUE(ch) ((ch) == 'y' || (ch) == 'Y' || (ch) == 't' || (ch) == 'T' || (ch) == '1' || (ch) == 'e' || (ch) == 'E')
183 static int ALSA_RegGetBoolean(HKEY key, const char *value, BOOL *answer)
188 rc = ALSA_RegGetString(key, value, &buf);
192 if (IS_OPTION_TRUE(*buf))
195 HeapFree(GetProcessHeap(), 0, buf);
201 /*----------------------------------------------------------------------------
203 ** Get a string and interpret it as a DWORD
205 static int ALSA_RegGetInt(HKEY key, const char *value, DWORD *answer)
210 rc = ALSA_RegGetString(key, value, &buf);
214 HeapFree(GetProcessHeap(), 0, buf);
220 /* return a string duplicated on the win32 process heap, free with HeapFree */
221 static char* ALSA_strdup(const char *s) {
222 char *result = HeapAlloc(GetProcessHeap(), 0, strlen(s)+1);
229 #define ALSA_RETURN_ONFAIL(mycall) \
235 ERR("%s failed: %s(%d)\n", #mycall, snd_strerror(rc), rc); \
240 /*----------------------------------------------------------------------------
243 ** Given an ALSA PCM, figure out our HW CAPS structure info.
244 ** ctl can be null, pcm is required, as is all output parms.
247 static int ALSA_ComputeCaps(snd_ctl_t *ctl, snd_pcm_t *pcm,
248 WORD *channels, DWORD *flags, DWORD *formats, DWORD *supports)
250 snd_pcm_hw_params_t *hw_params;
251 snd_pcm_format_mask_t *fmask;
252 snd_pcm_access_mask_t *acmask;
253 unsigned int ratemin = 0;
254 unsigned int ratemax = 0;
255 unsigned int chmin = 0;
256 unsigned int chmax = 0;
259 hw_params = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_hw_params_sizeof() );
260 fmask = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_format_mask_sizeof() );
261 acmask = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_access_mask_sizeof() );
263 if ((rc = snd_pcm_hw_params_any(pcm, hw_params)) < 0) goto done;
265 snd_pcm_hw_params_get_format_mask(hw_params, fmask);
267 if ((rc = snd_pcm_hw_params_get_access_mask(hw_params, acmask)) < 0) goto done;
269 if ((rc = snd_pcm_hw_params_get_rate_min(hw_params, &ratemin, &dir)) < 0) goto done;
270 if ((rc = snd_pcm_hw_params_get_rate_max(hw_params, &ratemax, &dir)) < 0) goto done;
271 if ((rc = snd_pcm_hw_params_get_channels_min(hw_params, &chmin)) < 0) goto done;
272 if ((rc = snd_pcm_hw_params_get_channels_max(hw_params, &chmax)) < 0) goto done;
275 if ( (r) >= ratemin && ( (r) <= ratemax || ratemax == -1) ) \
277 if (snd_pcm_format_mask_test( fmask, SND_PCM_FORMAT_U8)) \
279 if (chmin <= 1 && 1 <= chmax) \
280 *formats |= WAVE_FORMAT_##v##M08; \
281 if (chmin <= 2 && 2 <= chmax) \
282 *formats |= WAVE_FORMAT_##v##S08; \
284 if (snd_pcm_format_mask_test( fmask, SND_PCM_FORMAT_S16_LE)) \
286 if (chmin <= 1 && 1 <= chmax) \
287 *formats |= WAVE_FORMAT_##v##M16; \
288 if (chmin <= 2 && 2 <= chmax) \
289 *formats |= WAVE_FORMAT_##v##S16; \
300 FIXME("Device has a minimum of %d channels\n", chmin);
303 /* FIXME: is sample accurate always true ?
304 ** Can we do WAVECAPS_PITCH, WAVECAPS_SYNC, or WAVECAPS_PLAYBACKRATE? */
305 *supports |= WAVECAPS_SAMPLEACCURATE;
307 *supports |= WAVECAPS_DIRECTSOUND;
309 /* check for volume control support */
311 if (snd_ctl_name(ctl))
314 if (snd_hctl_open(&hctl, snd_ctl_name(ctl), 0) >= 0)
317 if (!ALSA_CheckSetVolume( hctl, NULL, NULL, NULL, NULL, NULL, NULL, NULL ))
319 *supports |= WAVECAPS_VOLUME;
320 if (chmin <= 2 && 2 <= chmax)
321 *supports |= WAVECAPS_LRVOLUME;
324 snd_hctl_close(hctl);
329 *flags = DSCAPS_CERTIFIED | DSCAPS_CONTINUOUSRATE;
330 *flags |= DSCAPS_SECONDARYMONO | DSCAPS_SECONDARYSTEREO;
331 *flags |= DSCAPS_SECONDARY8BIT | DSCAPS_SECONDARY16BIT;
333 if (*formats & (WAVE_FORMAT_1M08 | WAVE_FORMAT_2M08 |
334 WAVE_FORMAT_4M08 | WAVE_FORMAT_48M08 |
335 WAVE_FORMAT_96M08 | WAVE_FORMAT_1M16 |
336 WAVE_FORMAT_2M16 | WAVE_FORMAT_4M16 |
337 WAVE_FORMAT_48M16 | WAVE_FORMAT_96M16) )
338 *flags |= DSCAPS_PRIMARYMONO;
340 if (*formats & (WAVE_FORMAT_1S08 | WAVE_FORMAT_2S08 |
341 WAVE_FORMAT_4S08 | WAVE_FORMAT_48S08 |
342 WAVE_FORMAT_96S08 | WAVE_FORMAT_1S16 |
343 WAVE_FORMAT_2S16 | WAVE_FORMAT_4S16 |
344 WAVE_FORMAT_48S16 | WAVE_FORMAT_96S16) )
345 *flags |= DSCAPS_PRIMARYSTEREO;
347 if (*formats & (WAVE_FORMAT_1M08 | WAVE_FORMAT_2M08 |
348 WAVE_FORMAT_4M08 | WAVE_FORMAT_48M08 |
349 WAVE_FORMAT_96M08 | WAVE_FORMAT_1S08 |
350 WAVE_FORMAT_2S08 | WAVE_FORMAT_4S08 |
351 WAVE_FORMAT_48S08 | WAVE_FORMAT_96S08) )
352 *flags |= DSCAPS_PRIMARY8BIT;
354 if (*formats & (WAVE_FORMAT_1M16 | WAVE_FORMAT_2M16 |
355 WAVE_FORMAT_4M16 | WAVE_FORMAT_48M16 |
356 WAVE_FORMAT_96M16 | WAVE_FORMAT_1S16 |
357 WAVE_FORMAT_2S16 | WAVE_FORMAT_4S16 |
358 WAVE_FORMAT_48S16 | WAVE_FORMAT_96S16) )
359 *flags |= DSCAPS_PRIMARY16BIT;
364 if (rc < 0) ERR("failed: %s(%d)\n", snd_strerror(rc), rc);
365 HeapFree( GetProcessHeap(), 0, hw_params );
366 HeapFree( GetProcessHeap(), 0, fmask );
367 HeapFree( GetProcessHeap(), 0, acmask );
371 /*----------------------------------------------------------------------------
372 ** ALSA_AddCommonDevice
374 ** Perform Alsa initialization common to both capture and playback
376 ** Side Effect: ww->pcname and ww->ctlname may need to be freed.
378 ** Note: this was originally coded by using snd_pcm_name(pcm), until
379 ** I discovered that with at least one version of alsa lib,
380 ** the use of a pcm named default:0 would cause snd_pcm_name() to fail.
381 ** So passing the name in is logically extraneous. Sigh.
383 static int ALSA_AddCommonDevice(snd_ctl_t *ctl, snd_pcm_t *pcm, const char *pcmname, WINE_WAVEDEV *ww)
385 snd_pcm_info_t *infop;
388 infop = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_info_sizeof() );
389 if ((rc = snd_pcm_info(pcm, infop)) < 0)
391 HeapFree( GetProcessHeap(), 0, infop );
396 ww->pcmname = ALSA_strdup(pcmname);
399 HeapFree( GetProcessHeap(), 0, infop );
403 if (ctl && snd_ctl_name(ctl))
404 ww->ctlname = ALSA_strdup(snd_ctl_name(ctl));
406 strcpy(ww->interface_name, "winealsa: ");
407 memcpy(ww->interface_name + strlen(ww->interface_name),
409 min(strlen(ww->pcmname), sizeof(ww->interface_name) - strlen("winealsa: ")));
411 strcpy(ww->ds_desc.szDrvname, "winealsa.drv");
413 memcpy(ww->ds_desc.szDesc, snd_pcm_info_get_name(infop),
414 min( (sizeof(ww->ds_desc.szDesc) - 1), strlen(snd_pcm_info_get_name(infop))) );
416 ww->ds_caps.dwMinSecondarySampleRate = DSBFREQUENCY_MIN;
417 ww->ds_caps.dwMaxSecondarySampleRate = DSBFREQUENCY_MAX;
418 ww->ds_caps.dwPrimaryBuffers = 1;
420 HeapFree( GetProcessHeap(), 0, infop );
424 /*----------------------------------------------------------------------------
427 static void ALSA_FreeDevice(WINE_WAVEDEV *ww)
429 HeapFree(GetProcessHeap(), 0, ww->pcmname);
432 HeapFree(GetProcessHeap(), 0, ww->ctlname);
436 /*----------------------------------------------------------------------------
437 ** ALSA_AddDeviceToArray
439 ** Dynamically size one of the wavein or waveout arrays of devices,
440 ** and add a fully configured device node to the array.
443 static int ALSA_AddDeviceToArray(WINE_WAVEDEV *ww, WINE_WAVEDEV **array,
444 DWORD *count, DWORD *alloced, int isdefault)
448 if (*count >= *alloced)
450 (*alloced) += WAVEDEV_ALLOC_EXTENT_SIZE;
452 *array = HeapAlloc(GetProcessHeap(), 0, sizeof(*ww) * (*alloced));
454 *array = HeapReAlloc(GetProcessHeap(), 0, *array, sizeof(*ww) * (*alloced));
462 /* If this is the default, arrange for it to be the first element */
463 if (isdefault && i > 0)
465 (*array)[*count] = (*array)[0];
475 /*----------------------------------------------------------------------------
476 ** ALSA_AddPlaybackDevice
478 ** Add a given Alsa device to Wine's internal list of Playback
481 static int ALSA_AddPlaybackDevice(snd_ctl_t *ctl, snd_pcm_t *pcm, const char *pcmname, int isdefault)
486 memset(&wwo, '\0', sizeof(wwo));
488 rc = ALSA_AddCommonDevice(ctl, pcm, pcmname, &wwo);
492 MultiByteToWideChar(CP_UNIXCP, 0, wwo.ds_desc.szDesc, -1,
493 wwo.outcaps.szPname, sizeof(wwo.outcaps.szPname)/sizeof(WCHAR));
494 wwo.outcaps.szPname[sizeof(wwo.outcaps.szPname)/sizeof(WCHAR) - 1] = '\0';
496 wwo.outcaps.wMid = MM_CREATIVE;
497 wwo.outcaps.wPid = MM_CREATIVE_SBP16_WAVEOUT;
498 wwo.outcaps.vDriverVersion = 0x0100;
500 rc = ALSA_ComputeCaps(ctl, pcm, &wwo.outcaps.wChannels, &wwo.ds_caps.dwFlags,
501 &wwo.outcaps.dwFormats, &wwo.outcaps.dwSupport);
504 WARN("Error calculating device caps for pcm [%s]\n", wwo.pcmname);
505 ALSA_FreeDevice(&wwo);
509 rc = ALSA_AddDeviceToArray(&wwo, &WOutDev, &ALSA_WodNumDevs, &ALSA_WodNumMallocedDevs, isdefault);
511 ALSA_FreeDevice(&wwo);
515 /*----------------------------------------------------------------------------
516 ** ALSA_AddCaptureDevice
518 ** Add a given Alsa device to Wine's internal list of Capture
521 static int ALSA_AddCaptureDevice(snd_ctl_t *ctl, snd_pcm_t *pcm, const char *pcmname, int isdefault)
526 memset(&wwi, '\0', sizeof(wwi));
528 rc = ALSA_AddCommonDevice(ctl, pcm, pcmname, &wwi);
532 MultiByteToWideChar(CP_UNIXCP, 0, wwi.ds_desc.szDesc, -1,
533 wwi.incaps.szPname, sizeof(wwi.incaps.szPname) / sizeof(WCHAR));
534 wwi.incaps.szPname[sizeof(wwi.incaps.szPname)/sizeof(WCHAR) - 1] = '\0';
536 wwi.incaps.wMid = MM_CREATIVE;
537 wwi.incaps.wPid = MM_CREATIVE_SBP16_WAVEOUT;
538 wwi.incaps.vDriverVersion = 0x0100;
540 rc = ALSA_ComputeCaps(ctl, pcm, &wwi.incaps.wChannels, &wwi.ds_caps.dwFlags,
541 &wwi.incaps.dwFormats, &wwi.dwSupport);
544 WARN("Error calculating device caps for pcm [%s]\n", wwi.pcmname);
545 ALSA_FreeDevice(&wwi);
549 rc = ALSA_AddDeviceToArray(&wwi, &WInDev, &ALSA_WidNumDevs, &ALSA_WidNumMallocedDevs, isdefault);
551 ALSA_FreeDevice(&wwi);
555 /*----------------------------------------------------------------------------
556 ** ALSA_CheckEnvironment
558 ** Given an Alsa style configuration node, scan its subitems
559 ** for environment variable names, and use them to find an override,
561 ** This is essentially a long and convoluted way of doing:
562 ** getenv("ALSA_CARD")
563 ** getenv("ALSA_CTL_CARD")
564 ** getenv("ALSA_PCM_CARD")
565 ** getenv("ALSA_PCM_DEVICE")
567 ** The output value is set with the atoi() of the first environment
568 ** variable found to be set, if any; otherwise, it is left alone
570 static void ALSA_CheckEnvironment(snd_config_t *node, int *outvalue)
572 snd_config_iterator_t iter;
574 for (iter = snd_config_iterator_first(node);
575 iter != snd_config_iterator_end(node);
576 iter = snd_config_iterator_next(iter))
578 snd_config_t *leaf = snd_config_iterator_entry(iter);
579 if (snd_config_get_type(leaf) == SND_CONFIG_TYPE_STRING)
582 if (snd_config_get_string(leaf, &value) >= 0)
584 char *p = getenv(value);
595 /*----------------------------------------------------------------------------
596 ** ALSA_DefaultDevices
598 ** Jump through Alsa style hoops to (hopefully) properly determine
599 ** Alsa defaults for CTL Card #, as well as for PCM Card + Device #.
600 ** We'll also find out if the user has set any of the environment
601 ** variables that specify we're to use a specific card or device.
604 ** directhw Whether to use a direct hardware device or not;
605 ** essentially switches the pcm device name from
606 ** one of 'default:X' or 'plughw:X' to "hw:X"
607 ** defctlcard If !NULL, will hold the ctl card number given
608 ** by the ALSA config as the default
609 ** defpcmcard If !NULL, default pcm card #
610 ** defpcmdev If !NULL, default pcm device #
611 ** fixedctlcard If !NULL, and the user set the appropriate
612 ** environment variable, we'll set to the
613 ** card the user specified.
614 ** fixedpcmcard If !NULL, and the user set the appropriate
615 ** environment variable, we'll set to the
616 ** card the user specified.
617 ** fixedpcmdev If !NULL, and the user set the appropriate
618 ** environment variable, we'll set to the
619 ** device the user specified.
621 ** Returns: 0 on success, < 0 on failure
623 static int ALSA_DefaultDevices(int directhw,
625 long *defpcmcard, long *defpcmdev,
627 int *fixedpcmcard, int *fixedpcmdev)
629 snd_config_t *configp;
632 ALSA_RETURN_ONFAIL(snd_config_update());
635 if (snd_config_search(snd_config, "defaults.ctl.card", &configp) >= 0)
636 snd_config_get_integer(configp, defctlcard);
639 if (snd_config_search(snd_config, "defaults.pcm.card", &configp) >= 0)
640 snd_config_get_integer(configp, defpcmcard);
643 if (snd_config_search(snd_config, "defaults.pcm.device", &configp) >= 0)
644 snd_config_get_integer(configp, defpcmdev);
649 if (snd_config_search(snd_config, "ctl.hw.@args.CARD.default.vars", &configp) >= 0)
650 ALSA_CheckEnvironment(configp, fixedctlcard);
655 sprintf(pcmsearch, "pcm.%s.@args.CARD.default.vars", directhw ? "hw" : "plughw");
656 if (snd_config_search(snd_config, pcmsearch, &configp) >= 0)
657 ALSA_CheckEnvironment(configp, fixedpcmcard);
662 sprintf(pcmsearch, "pcm.%s.@args.DEV.default.vars", directhw ? "hw" : "plughw");
663 if (snd_config_search(snd_config, pcmsearch, &configp) >= 0)
664 ALSA_CheckEnvironment(configp, fixedpcmdev);
671 /*----------------------------------------------------------------------------
674 ** Iterate through all discoverable ALSA cards, searching
675 ** for usable PCM devices.
678 ** directhw Whether to use a direct hardware device or not;
679 ** essentially switches the pcm device name from
680 ** one of 'default:X' or 'plughw:X' to "hw:X"
681 ** defctlcard Alsa's notion of the default ctl card.
682 ** defpcmcard . pcm card
683 ** defpcmdev . pcm device
684 ** fixedctlcard If not -1, then gives the value of ALSA_CTL_CARD
685 ** or equivalent environment variable
686 ** fixedpcmcard If not -1, then gives the value of ALSA_PCM_CARD
687 ** or equivalent environment variable
688 ** fixedpcmdev If not -1, then gives the value of ALSA_PCM_DEVICE
689 ** or equivalent environment variable
691 ** Returns: 0 on success, < 0 on failure
693 static int ALSA_ScanDevices(int directhw,
694 long defctlcard, long defpcmcard, long defpcmdev,
695 int fixedctlcard, int fixedpcmcard, int fixedpcmdev)
697 int card = fixedpcmcard;
698 int scan_devices = (fixedpcmdev == -1);
700 /*------------------------------------------------------------------------
701 ** Loop through all available cards
702 **----------------------------------------------------------------------*/
704 snd_card_next(&card);
706 for (; card != -1; snd_card_next(&card))
713 /*--------------------------------------------------------------------
714 ** Try to open a ctl handle; Wine doesn't absolutely require one,
715 ** but it does allow for volume control and for device scanning
716 **------------------------------------------------------------------*/
717 sprintf(ctlname, "hw:%d", fixedctlcard == -1 ? card : fixedctlcard);
718 rc = snd_ctl_open(&ctl, ctlname, SND_CTL_NONBLOCK);
722 WARN("Unable to open an alsa ctl for [%s] (pcm card %d): %s; not scanning devices\n",
723 ctlname, card, snd_strerror(rc));
724 if (fixedpcmdev == -1)
728 /*--------------------------------------------------------------------
729 ** Loop through all available devices on this card
730 **------------------------------------------------------------------*/
731 device = fixedpcmdev;
733 snd_ctl_pcm_next_device(ctl, &device);
735 for (; device != -1; snd_ctl_pcm_next_device(ctl, &device))
737 char defaultpcmname[256];
738 char plugpcmname[256];
740 char *pcmname = NULL;
743 sprintf(defaultpcmname, "default");
744 sprintf(plugpcmname, "plughw:%d,%d", card, device);
745 sprintf(hwpcmname, "hw:%d,%d", card, device);
747 /*----------------------------------------------------------------
748 ** See if it's a valid playback device
749 **--------------------------------------------------------------*/
750 if (ALSA_TestDeviceForWine(card, device, SND_PCM_STREAM_PLAYBACK) == 0)
752 /* If we can, try the default:X device name first */
753 if (! scan_devices && ! directhw)
755 pcmname = defaultpcmname;
756 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
763 pcmname = directhw ? hwpcmname : plugpcmname;
764 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
769 if (defctlcard == card && defpcmcard == card && defpcmdev == device)
770 ALSA_AddPlaybackDevice(ctl, pcm, pcmname, TRUE);
772 ALSA_AddPlaybackDevice(ctl, pcm, pcmname, FALSE);
777 TRACE("Device [%s/%s] failed to open for playback: %s\n",
778 directhw || scan_devices ? "(N/A)" : defaultpcmname,
779 directhw ? hwpcmname : plugpcmname,
784 /*----------------------------------------------------------------
785 ** See if it's a valid capture device
786 **--------------------------------------------------------------*/
787 if (ALSA_TestDeviceForWine(card, device, SND_PCM_STREAM_CAPTURE) == 0)
789 /* If we can, try the default:X device name first */
790 if (! scan_devices && ! directhw)
792 pcmname = defaultpcmname;
793 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
800 pcmname = directhw ? hwpcmname : plugpcmname;
801 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
806 if (defctlcard == card && defpcmcard == card && defpcmdev == device)
807 ALSA_AddCaptureDevice(ctl, pcm, pcmname, TRUE);
809 ALSA_AddCaptureDevice(ctl, pcm, pcmname, FALSE);
815 TRACE("Device [%s/%s] failed to open for capture: %s\n",
816 directhw || scan_devices ? "(N/A)" : defaultpcmname,
817 directhw ? hwpcmname : plugpcmname,
829 /*--------------------------------------------------------------------
830 ** If the user has set env variables such that we're pegged to
831 ** a specific card, then break after we've examined it
832 **------------------------------------------------------------------*/
833 if (fixedpcmcard != -1)
841 /*----------------------------------------------------------------------------
842 ** ALSA_PerformDefaultScan
843 ** Perform the basic default scanning for devices within ALSA.
844 ** The hope is that this routine implements a 'correct'
845 ** scanning algorithm from the Alsalib point of view.
847 ** Note that Wine, overall, has other mechanisms to
848 ** override and specify exact CTL and PCM device names,
849 ** but this routine is imagined as the default that
850 ** 99% of users will use.
852 ** The basic algorithm is simple:
853 ** Use snd_card_next to iterate cards; within cards, use
854 ** snd_ctl_pcm_next_device to iterate through devices.
856 ** We add a little complexity by taking into consideration
857 ** environment variables such as ALSA_CARD (et all), and by
858 ** detecting when a given device matches the default specified
862 ** directhw If !0, indicates we should use the hw:X
863 ** PCM interface, rather than first try
864 ** the 'default' device followed by the plughw
865 ** device. (default and plughw do fancy mixing
866 ** and audio scaling, if they are available).
867 ** devscan If TRUE, we should scan all devices, not
868 ** juse use device 0 on each card
874 ** Invokes the ALSA_AddXXXDevice functions on valid
877 static int ALSA_PerformDefaultScan(int directhw, BOOL devscan)
879 long defctlcard = -1, defpcmcard = -1, defpcmdev = -1;
880 int fixedctlcard = -1, fixedpcmcard = -1, fixedpcmdev = -1;
883 /* FIXME: We should dlsym the new snd_names_list/snd_names_list_free 1.0.9 apis,
884 ** and use them instead of this scan mechanism if they are present */
886 rc = ALSA_DefaultDevices(directhw, &defctlcard, &defpcmcard, &defpcmdev,
887 &fixedctlcard, &fixedpcmcard, &fixedpcmdev);
891 if (fixedpcmdev == -1 && ! devscan)
894 return(ALSA_ScanDevices(directhw, defctlcard, defpcmcard, defpcmdev, fixedctlcard, fixedpcmcard, fixedpcmdev));
898 /*----------------------------------------------------------------------------
899 ** ALSA_AddUserSpecifiedDevice
900 ** Add a device given from the registry
902 static int ALSA_AddUserSpecifiedDevice(const char *ctlname, const char *pcmname)
906 snd_ctl_t *ctl = NULL;
907 snd_pcm_t *pcm = NULL;
911 rc = snd_ctl_open(&ctl, ctlname, SND_CTL_NONBLOCK);
916 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
919 ALSA_AddPlaybackDevice(ctl, pcm, pcmname, FALSE);
924 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
927 ALSA_AddCaptureDevice(ctl, pcm, pcmname, FALSE);
939 /*----------------------------------------------------------------------------
941 ** Initialize the Wine Alsa sub system.
942 ** The main task is to probe for and store a list of all appropriate playback
943 ** and capture devices.
944 ** Key control points are from the registry key:
945 ** [Software\Wine\Alsa Driver]
946 ** AutoScanCards Whether or not to scan all known sound cards
947 ** and add them to Wine's list (default yes)
948 ** AutoScanDevices Whether or not to scan all known PCM devices
949 ** on each card (default no)
950 ** UseDirectHW Whether or not to use the hw:X device,
951 ** instead of the fancy default:X or plughw:X device.
952 ** The hw:X device goes straight to the hardware
953 ** without any fancy mixing or audio scaling in between.
954 ** DeviceCount If present, specifies the number of hard coded
955 ** Alsa devices to add to Wine's list; default 0
956 ** DevicePCMn Specifies the Alsa PCM devices to open for
957 ** Device n (where n goes from 1 to DeviceCount)
958 ** DeviceCTLn Specifies the Alsa control devices to open for
959 ** Device n (where n goes from 1 to DeviceCount)
961 ** Using AutoScanCards no, and then Devicexxx info
962 ** is a way to exactly specify the devices used by Wine.
965 LONG ALSA_WaveInit(void)
968 BOOL AutoScanCards = TRUE;
969 BOOL AutoScanDevices = FALSE;
970 BOOL UseDirectHW = FALSE;
971 DWORD DeviceCount = 0;
975 if (!wine_dlopen("libasound.so.2", RTLD_LAZY|RTLD_GLOBAL, NULL, 0))
977 ERR("Error: ALSA lib needs to be loaded with flags RTLD_LAZY and RTLD_GLOBAL.\n");
981 /* @@ Wine registry key: HKCU\Software\Wine\Alsa Driver */
982 rc = RegOpenKeyExA(HKEY_CURRENT_USER, "Software\\Wine\\Alsa Driver", 0, KEY_QUERY_VALUE, &key);
983 if (rc == ERROR_SUCCESS)
985 ALSA_RegGetBoolean(key, "AutoScanCards", &AutoScanCards);
986 ALSA_RegGetBoolean(key, "AutoScanDevices", &AutoScanDevices);
987 ALSA_RegGetBoolean(key, "UseDirectHW", &UseDirectHW);
988 ALSA_RegGetInt(key, "DeviceCount", &DeviceCount);
992 rc = ALSA_PerformDefaultScan(UseDirectHW, AutoScanDevices);
994 for (i = 0; i < DeviceCount; i++)
996 char *ctl_name = NULL;
997 char *pcm_name = NULL;
1000 sprintf(value, "DevicePCM%d", i + 1);
1001 if (ALSA_RegGetString(key, value, &pcm_name) == ERROR_SUCCESS)
1003 sprintf(value, "DeviceCTL%d", i + 1);
1004 ALSA_RegGetString(key, value, &ctl_name);
1005 ALSA_AddUserSpecifiedDevice(ctl_name, pcm_name);
1008 HeapFree(GetProcessHeap(), 0, ctl_name);
1009 HeapFree(GetProcessHeap(), 0, pcm_name);
1018 #endif /* HAVE_ALSA */