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
28 #include "wine/port.h"
40 #ifdef HAVE_SYS_IOCTL_H
41 # include <sys/ioctl.h>
43 #ifdef HAVE_SYS_MMAN_H
44 # include <sys/mman.h>
55 /* ksmedia.h defines KSDATAFORMAT_SUBTYPE_PCM and KSDATAFORMAT_SUBTYPE_IEEE_FLOAT
56 * However either all files that use it will define it, or no files will
57 * The only way to solve this is by adding initguid.h here, and include the guid that way
62 #include "wine/library.h"
63 #include "wine/unicode.h"
64 #include "wine/debug.h"
66 WINE_DEFAULT_DEBUG_CHANNEL(wave);
70 /*----------------------------------------------------------------------------
71 ** ALSA_TestDeviceForWine
73 ** Test to see if a given device is sufficient for Wine.
75 static int ALSA_TestDeviceForWine(int card, int device, snd_pcm_stream_t streamtype)
77 snd_pcm_t *pcm = NULL;
80 snd_pcm_hw_params_t *hwparams;
81 const char *reason = NULL;
84 hwparams = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_hw_params_sizeof() );
86 /* Note that the plug: device masks out a lot of info, we want to avoid that */
87 sprintf(pcmname, "hw:%d,%d", card, device);
88 retcode = snd_pcm_open(&pcm, pcmname, streamtype, SND_PCM_NONBLOCK);
91 /* Note that a busy device isn't automatically disqualified */
92 if (retcode == (-1 * EBUSY))
97 retcode = snd_pcm_hw_params_any(pcm, hwparams);
100 reason = "Could not retrieve hw_params";
104 /* set the count of channels */
105 retcode = snd_pcm_hw_params_set_channels(pcm, hwparams, 2);
108 reason = "Could not set channels";
113 retcode = snd_pcm_hw_params_set_rate_near(pcm, hwparams, &rrate, 0);
116 reason = "Could not set rate";
122 reason = "Rate came back as 0";
126 /* write the parameters to device */
127 retcode = snd_pcm_hw_params(pcm, hwparams);
130 reason = "Could not set hwparams";
139 HeapFree( GetProcessHeap(), 0, hwparams );
141 if (retcode != 0 && retcode != (-1 * ENOENT))
142 TRACE("Discarding card %d/device %d: %s [%d(%s)]\n", card, device, reason, retcode, snd_strerror(retcode));
147 /*----------------------------------------------------------------------------
149 ** Retrieve a string from a registry key
151 static int ALSA_RegGetString(HKEY key, const char *value, char **bufp)
158 rc = RegQueryValueExA(key, value, NULL, &type, NULL, &bufsize);
159 if (rc != ERROR_SUCCESS)
165 *bufp = HeapAlloc(GetProcessHeap(), 0, bufsize);
169 rc = RegQueryValueExA(key, value, NULL, NULL, (LPBYTE)*bufp, &bufsize);
173 /*----------------------------------------------------------------------------
174 ** ALSA_RegGetBoolean
175 ** Get a string and interpret it as a boolean
179 Y(es), T(rue), 1, E(nabled) */
181 #define IS_OPTION_TRUE(ch) ((ch) == 'y' || (ch) == 'Y' || (ch) == 't' || (ch) == 'T' || (ch) == '1' || (ch) == 'e' || (ch) == 'E')
182 static int ALSA_RegGetBoolean(HKEY key, const char *value, BOOL *answer)
187 rc = ALSA_RegGetString(key, value, &buf);
191 if (IS_OPTION_TRUE(*buf))
194 HeapFree(GetProcessHeap(), 0, buf);
200 /*----------------------------------------------------------------------------
202 ** Get a string and interpret it as a DWORD
204 static int ALSA_RegGetInt(HKEY key, const char *value, DWORD *answer)
209 rc = ALSA_RegGetString(key, value, &buf);
213 HeapFree(GetProcessHeap(), 0, buf);
219 /* return a string duplicated on the win32 process heap, free with HeapFree */
220 static char* ALSA_strdup(const char *s) {
221 char *result = HeapAlloc(GetProcessHeap(), 0, strlen(s)+1);
228 #define ALSA_RETURN_ONFAIL(mycall) \
234 ERR("%s failed: %s(%d)\n", #mycall, snd_strerror(rc), rc); \
239 /*----------------------------------------------------------------------------
242 ** Given an ALSA PCM, figure out our HW CAPS structure info.
243 ** ctl can be null, pcm is required, as is all output parms.
246 static int ALSA_ComputeCaps(snd_ctl_t *ctl, snd_pcm_t *pcm,
247 WORD *channels, DWORD *flags, DWORD *formats, DWORD *supports)
249 snd_pcm_hw_params_t *hw_params;
250 snd_pcm_format_mask_t *fmask;
251 snd_pcm_access_mask_t *acmask;
252 unsigned int ratemin = 0;
253 unsigned int ratemax = 0;
254 unsigned int chmin = 0;
255 unsigned int chmax = 0;
258 hw_params = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_hw_params_sizeof() );
259 fmask = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_format_mask_sizeof() );
260 acmask = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_access_mask_sizeof() );
262 if ((rc = snd_pcm_hw_params_any(pcm, hw_params)) < 0) goto done;
264 snd_pcm_hw_params_get_format_mask(hw_params, fmask);
266 if ((rc = snd_pcm_hw_params_get_access_mask(hw_params, acmask)) < 0) goto done;
268 if ((rc = snd_pcm_hw_params_get_rate_min(hw_params, &ratemin, &dir)) < 0) goto done;
269 if ((rc = snd_pcm_hw_params_get_rate_max(hw_params, &ratemax, &dir)) < 0) goto done;
270 if ((rc = snd_pcm_hw_params_get_channels_min(hw_params, &chmin)) < 0) goto done;
271 if ((rc = snd_pcm_hw_params_get_channels_max(hw_params, &chmax)) < 0) goto done;
274 if ( (r) >= ratemin && ( (r) <= ratemax || ratemax == -1) ) \
276 if (snd_pcm_format_mask_test( fmask, SND_PCM_FORMAT_U8)) \
278 if (chmin <= 1 && 1 <= chmax) \
279 *formats |= WAVE_FORMAT_##v##M08; \
280 if (chmin <= 2 && 2 <= chmax) \
281 *formats |= WAVE_FORMAT_##v##S08; \
283 if (snd_pcm_format_mask_test( fmask, SND_PCM_FORMAT_S16_LE)) \
285 if (chmin <= 1 && 1 <= chmax) \
286 *formats |= WAVE_FORMAT_##v##M16; \
287 if (chmin <= 2 && 2 <= chmax) \
288 *formats |= WAVE_FORMAT_##v##S16; \
299 FIXME("Device has a minimum of %d channels\n", chmin);
302 /* FIXME: is sample accurate always true ?
303 ** Can we do WAVECAPS_PITCH, WAVECAPS_SYNC, or WAVECAPS_PLAYBACKRATE? */
304 *supports |= WAVECAPS_SAMPLEACCURATE;
306 /* FIXME: NONITERLEAVED and COMPLEX are not supported right now */
307 if ( snd_pcm_access_mask_test( acmask, SND_PCM_ACCESS_MMAP_INTERLEAVED ) )
308 *supports |= WAVECAPS_DIRECTSOUND;
310 /* check for volume control support */
312 if (snd_ctl_name(ctl))
315 if (snd_hctl_open(&hctl, snd_ctl_name(ctl), 0) >= 0)
318 if (!ALSA_CheckSetVolume( hctl, NULL, NULL, NULL, NULL, NULL, NULL, NULL ))
320 *supports |= WAVECAPS_VOLUME;
321 if (chmin <= 2 && 2 <= chmax)
322 *supports |= WAVECAPS_LRVOLUME;
325 snd_hctl_close(hctl);
330 *flags = DSCAPS_CERTIFIED | DSCAPS_CONTINUOUSRATE;
331 *flags |= DSCAPS_SECONDARYMONO | DSCAPS_SECONDARYSTEREO;
332 *flags |= DSCAPS_SECONDARY8BIT | DSCAPS_SECONDARY16BIT;
334 if (*formats & (WAVE_FORMAT_1M08 | WAVE_FORMAT_2M08 |
335 WAVE_FORMAT_4M08 | WAVE_FORMAT_48M08 |
336 WAVE_FORMAT_96M08 | WAVE_FORMAT_1M16 |
337 WAVE_FORMAT_2M16 | WAVE_FORMAT_4M16 |
338 WAVE_FORMAT_48M16 | WAVE_FORMAT_96M16) )
339 *flags |= DSCAPS_PRIMARYMONO;
341 if (*formats & (WAVE_FORMAT_1S08 | WAVE_FORMAT_2S08 |
342 WAVE_FORMAT_4S08 | WAVE_FORMAT_48S08 |
343 WAVE_FORMAT_96S08 | WAVE_FORMAT_1S16 |
344 WAVE_FORMAT_2S16 | WAVE_FORMAT_4S16 |
345 WAVE_FORMAT_48S16 | WAVE_FORMAT_96S16) )
346 *flags |= DSCAPS_PRIMARYSTEREO;
348 if (*formats & (WAVE_FORMAT_1M08 | WAVE_FORMAT_2M08 |
349 WAVE_FORMAT_4M08 | WAVE_FORMAT_48M08 |
350 WAVE_FORMAT_96M08 | WAVE_FORMAT_1S08 |
351 WAVE_FORMAT_2S08 | WAVE_FORMAT_4S08 |
352 WAVE_FORMAT_48S08 | WAVE_FORMAT_96S08) )
353 *flags |= DSCAPS_PRIMARY8BIT;
355 if (*formats & (WAVE_FORMAT_1M16 | WAVE_FORMAT_2M16 |
356 WAVE_FORMAT_4M16 | WAVE_FORMAT_48M16 |
357 WAVE_FORMAT_96M16 | WAVE_FORMAT_1S16 |
358 WAVE_FORMAT_2S16 | WAVE_FORMAT_4S16 |
359 WAVE_FORMAT_48S16 | WAVE_FORMAT_96S16) )
360 *flags |= DSCAPS_PRIMARY16BIT;
365 if (rc < 0) ERR("failed: %s(%d)\n", snd_strerror(rc), rc);
366 HeapFree( GetProcessHeap(), 0, hw_params );
367 HeapFree( GetProcessHeap(), 0, fmask );
368 HeapFree( GetProcessHeap(), 0, acmask );
372 /*----------------------------------------------------------------------------
373 ** ALSA_AddCommonDevice
375 ** Perform Alsa initialization common to both capture and playback
377 ** Side Effect: ww->pcname and ww->ctlname may need to be freed.
379 ** Note: this was originally coded by using snd_pcm_name(pcm), until
380 ** I discovered that with at least one version of alsa lib,
381 ** the use of a pcm named default:0 would cause snd_pcm_name() to fail.
382 ** So passing the name in is logically extraneous. Sigh.
384 static int ALSA_AddCommonDevice(snd_ctl_t *ctl, snd_pcm_t *pcm, const char *pcmname, WINE_WAVEDEV *ww)
386 snd_pcm_info_t *infop;
389 infop = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_info_sizeof() );
390 if ((rc = snd_pcm_info(pcm, infop)) < 0)
392 HeapFree( GetProcessHeap(), 0, infop );
397 ww->pcmname = ALSA_strdup(pcmname);
400 HeapFree( GetProcessHeap(), 0, infop );
404 if (ctl && snd_ctl_name(ctl))
405 ww->ctlname = ALSA_strdup(snd_ctl_name(ctl));
407 strcpy(ww->interface_name, "winealsa: ");
408 memcpy(ww->interface_name + strlen(ww->interface_name),
410 min(strlen(ww->pcmname), sizeof(ww->interface_name) - strlen("winealsa: ")));
412 strcpy(ww->ds_desc.szDrvname, "winealsa.drv");
414 memcpy(ww->ds_desc.szDesc, snd_pcm_info_get_name(infop),
415 min( (sizeof(ww->ds_desc.szDesc) - 1), strlen(snd_pcm_info_get_name(infop))) );
417 ww->ds_caps.dwMinSecondarySampleRate = DSBFREQUENCY_MIN;
418 ww->ds_caps.dwMaxSecondarySampleRate = DSBFREQUENCY_MAX;
419 ww->ds_caps.dwPrimaryBuffers = 1;
421 HeapFree( GetProcessHeap(), 0, infop );
425 /*----------------------------------------------------------------------------
428 static void ALSA_FreeDevice(WINE_WAVEDEV *ww)
430 HeapFree(GetProcessHeap(), 0, ww->pcmname);
433 HeapFree(GetProcessHeap(), 0, ww->ctlname);
437 /*----------------------------------------------------------------------------
438 ** ALSA_AddDeviceToArray
440 ** Dynamically size one of the wavein or waveout arrays of devices,
441 ** and add a fully configured device node to the array.
444 static int ALSA_AddDeviceToArray(WINE_WAVEDEV *ww, WINE_WAVEDEV **array,
445 DWORD *count, DWORD *alloced, int isdefault)
449 if (*count >= *alloced)
451 (*alloced) += WAVEDEV_ALLOC_EXTENT_SIZE;
453 *array = HeapAlloc(GetProcessHeap(), 0, sizeof(*ww) * (*alloced));
455 *array = HeapReAlloc(GetProcessHeap(), 0, *array, sizeof(*ww) * (*alloced));
463 /* If this is the default, arrange for it to be the first element */
464 if (isdefault && i > 0)
466 (*array)[*count] = (*array)[0];
476 /*----------------------------------------------------------------------------
477 ** ALSA_AddPlaybackDevice
479 ** Add a given Alsa device to Wine's internal list of Playback
482 static int ALSA_AddPlaybackDevice(snd_ctl_t *ctl, snd_pcm_t *pcm, const char *pcmname, int isdefault)
487 memset(&wwo, '\0', sizeof(wwo));
489 rc = ALSA_AddCommonDevice(ctl, pcm, pcmname, &wwo);
493 MultiByteToWideChar(CP_ACP, 0, wwo.ds_desc.szDesc, -1,
494 wwo.outcaps.szPname, sizeof(wwo.outcaps.szPname)/sizeof(WCHAR));
495 wwo.outcaps.szPname[sizeof(wwo.outcaps.szPname)/sizeof(WCHAR) - 1] = '\0';
497 wwo.outcaps.wMid = MM_CREATIVE;
498 wwo.outcaps.wPid = MM_CREATIVE_SBP16_WAVEOUT;
499 wwo.outcaps.vDriverVersion = 0x0100;
501 rc = ALSA_ComputeCaps(ctl, pcm, &wwo.outcaps.wChannels, &wwo.ds_caps.dwFlags,
502 &wwo.outcaps.dwFormats, &wwo.outcaps.dwSupport);
505 WARN("Error calculating device caps for pcm [%s]\n", wwo.pcmname);
506 ALSA_FreeDevice(&wwo);
510 rc = ALSA_AddDeviceToArray(&wwo, &WOutDev, &ALSA_WodNumDevs, &ALSA_WodNumMallocedDevs, isdefault);
512 ALSA_FreeDevice(&wwo);
516 /*----------------------------------------------------------------------------
517 ** ALSA_AddCaptureDevice
519 ** Add a given Alsa device to Wine's internal list of Capture
522 static int ALSA_AddCaptureDevice(snd_ctl_t *ctl, snd_pcm_t *pcm, const char *pcmname, int isdefault)
527 memset(&wwi, '\0', sizeof(wwi));
529 rc = ALSA_AddCommonDevice(ctl, pcm, pcmname, &wwi);
533 MultiByteToWideChar(CP_ACP, 0, wwi.ds_desc.szDesc, -1,
534 wwi.incaps.szPname, sizeof(wwi.incaps.szPname) / sizeof(WCHAR));
535 wwi.incaps.szPname[sizeof(wwi.incaps.szPname)/sizeof(WCHAR) - 1] = '\0';
537 wwi.incaps.wMid = MM_CREATIVE;
538 wwi.incaps.wPid = MM_CREATIVE_SBP16_WAVEOUT;
539 wwi.incaps.vDriverVersion = 0x0100;
541 rc = ALSA_ComputeCaps(ctl, pcm, &wwi.incaps.wChannels, &wwi.ds_caps.dwFlags,
542 &wwi.incaps.dwFormats, &wwi.dwSupport);
545 WARN("Error calculating device caps for pcm [%s]\n", wwi.pcmname);
546 ALSA_FreeDevice(&wwi);
550 rc = ALSA_AddDeviceToArray(&wwi, &WInDev, &ALSA_WidNumDevs, &ALSA_WidNumMallocedDevs, isdefault);
552 ALSA_FreeDevice(&wwi);
556 /*----------------------------------------------------------------------------
557 ** ALSA_CheckEnvironment
559 ** Given an Alsa style configuration node, scan its subitems
560 ** for environment variable names, and use them to find an override,
562 ** This is essentially a long and convolunted way of doing:
563 ** getenv("ALSA_CARD")
564 ** getenv("ALSA_CTL_CARD")
565 ** getenv("ALSA_PCM_CARD")
566 ** getenv("ALSA_PCM_DEVICE")
568 ** The output value is set with the atoi() of the first environment
569 ** variable found to be set, if any; otherwise, it is left alone
571 static void ALSA_CheckEnvironment(snd_config_t *node, int *outvalue)
573 snd_config_iterator_t iter;
575 for (iter = snd_config_iterator_first(node);
576 iter != snd_config_iterator_end(node);
577 iter = snd_config_iterator_next(iter))
579 snd_config_t *leaf = snd_config_iterator_entry(iter);
580 if (snd_config_get_type(leaf) == SND_CONFIG_TYPE_STRING)
583 if (snd_config_get_string(leaf, &value) >= 0)
585 char *p = getenv(value);
596 /*----------------------------------------------------------------------------
597 ** ALSA_DefaultDevices
599 ** Jump through Alsa style hoops to (hopefully) properly determine
600 ** Alsa defaults for CTL Card #, as well as for PCM Card + Device #.
601 ** We'll also find out if the user has set any of the environment
602 ** variables that specify we're to use a specific card or device.
605 ** directhw Whether to use a direct hardware device or not;
606 ** essentially switches the pcm device name from
607 ** one of 'default:X' or 'plughw:X' to "hw:X"
608 ** defctlcard If !NULL, will hold the ctl card number given
609 ** by the ALSA config as the default
610 ** defpcmcard If !NULL, default pcm card #
611 ** defpcmdev If !NULL, default pcm device #
612 ** fixedctlcard If !NULL, and the user set the appropriate
613 ** environment variable, we'll set to the
614 ** card the user specified.
615 ** fixedpcmcard If !NULL, and the user set the appropriate
616 ** environment variable, we'll set to the
617 ** card the user specified.
618 ** fixedpcmdev If !NULL, and the user set the appropriate
619 ** environment variable, we'll set to the
620 ** device the user specified.
622 ** Returns: 0 on success, < 0 on failiure
624 static int ALSA_DefaultDevices(int directhw,
626 long *defpcmcard, long *defpcmdev,
628 int *fixedpcmcard, int *fixedpcmdev)
630 snd_config_t *configp;
633 ALSA_RETURN_ONFAIL(snd_config_update());
636 if (snd_config_search(snd_config, "defaults.ctl.card", &configp) >= 0)
637 snd_config_get_integer(configp, defctlcard);
640 if (snd_config_search(snd_config, "defaults.pcm.card", &configp) >= 0)
641 snd_config_get_integer(configp, defpcmcard);
644 if (snd_config_search(snd_config, "defaults.pcm.device", &configp) >= 0)
645 snd_config_get_integer(configp, defpcmdev);
650 if (snd_config_search(snd_config, "ctl.hw.@args.CARD.default.vars", &configp) >= 0)
651 ALSA_CheckEnvironment(configp, fixedctlcard);
656 sprintf(pcmsearch, "pcm.%s.@args.CARD.default.vars", directhw ? "hw" : "plughw");
657 if (snd_config_search(snd_config, pcmsearch, &configp) >= 0)
658 ALSA_CheckEnvironment(configp, fixedpcmcard);
663 sprintf(pcmsearch, "pcm.%s.@args.DEV.default.vars", directhw ? "hw" : "plughw");
664 if (snd_config_search(snd_config, pcmsearch, &configp) >= 0)
665 ALSA_CheckEnvironment(configp, fixedpcmdev);
672 /*----------------------------------------------------------------------------
675 ** Iterate through all discoverable ALSA cards, searching
676 ** for usable PCM devices.
679 ** directhw Whether to use a direct hardware device or not;
680 ** essentially switches the pcm device name from
681 ** one of 'default:X' or 'plughw:X' to "hw:X"
682 ** defctlcard Alsa's notion of the default ctl card.
683 ** defpcmcard . pcm card
684 ** defpcmdev . pcm device
685 ** fixedctlcard If not -1, then gives the value of ALSA_CTL_CARD
686 ** or equivalent environment variable
687 ** fixedpcmcard If not -1, then gives the value of ALSA_PCM_CARD
688 ** or equivalent environment variable
689 ** fixedpcmdev If not -1, then gives the value of ALSA_PCM_DEVICE
690 ** or equivalent environment variable
692 ** Returns: 0 on success, < 0 on failiure
694 static int ALSA_ScanDevices(int directhw,
695 long defctlcard, long defpcmcard, long defpcmdev,
696 int fixedctlcard, int fixedpcmcard, int fixedpcmdev)
698 int card = fixedpcmcard;
699 int scan_devices = (fixedpcmdev == -1);
701 /*------------------------------------------------------------------------
702 ** Loop through all available cards
703 **----------------------------------------------------------------------*/
705 snd_card_next(&card);
707 for (; card != -1; snd_card_next(&card))
714 /*--------------------------------------------------------------------
715 ** Try to open a ctl handle; Wine doesn't absolutely require one,
716 ** but it does allow for volume control and for device scanning
717 **------------------------------------------------------------------*/
718 sprintf(ctlname, "hw:%d", fixedctlcard == -1 ? card : fixedctlcard);
719 rc = snd_ctl_open(&ctl, ctlname, SND_CTL_NONBLOCK);
723 WARN("Unable to open an alsa ctl for [%s] (pcm card %d): %s; not scanning devices\n",
724 ctlname, card, snd_strerror(rc));
725 if (fixedpcmdev == -1)
729 /*--------------------------------------------------------------------
730 ** Loop through all available devices on this card
731 **------------------------------------------------------------------*/
732 device = fixedpcmdev;
734 snd_ctl_pcm_next_device(ctl, &device);
736 for (; device != -1; snd_ctl_pcm_next_device(ctl, &device))
738 char defaultpcmname[256];
739 char plugpcmname[256];
741 char *pcmname = NULL;
744 sprintf(defaultpcmname, "default");
745 sprintf(plugpcmname, "plughw:%d,%d", card, device);
746 sprintf(hwpcmname, "hw:%d,%d", card, device);
748 /*----------------------------------------------------------------
749 ** See if it's a valid playback device
750 **--------------------------------------------------------------*/
751 if (ALSA_TestDeviceForWine(card, device, SND_PCM_STREAM_PLAYBACK) == 0)
753 /* If we can, try the default:X device name first */
754 if (! scan_devices && ! directhw)
756 pcmname = defaultpcmname;
757 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
764 pcmname = directhw ? hwpcmname : plugpcmname;
765 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
770 if (defctlcard == card && defpcmcard == card && defpcmdev == device)
771 ALSA_AddPlaybackDevice(ctl, pcm, pcmname, TRUE);
773 ALSA_AddPlaybackDevice(ctl, pcm, pcmname, FALSE);
778 TRACE("Device [%s/%s] failed to open for playback: %s\n",
779 directhw || scan_devices ? "(N/A)" : defaultpcmname,
780 directhw ? hwpcmname : plugpcmname,
785 /*----------------------------------------------------------------
786 ** See if it's a valid capture device
787 **--------------------------------------------------------------*/
788 if (ALSA_TestDeviceForWine(card, device, SND_PCM_STREAM_CAPTURE) == 0)
790 /* If we can, try the default:X device name first */
791 if (! scan_devices && ! directhw)
793 pcmname = defaultpcmname;
794 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
801 pcmname = directhw ? hwpcmname : plugpcmname;
802 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
807 if (defctlcard == card && defpcmcard == card && defpcmdev == device)
808 ALSA_AddCaptureDevice(ctl, pcm, pcmname, TRUE);
810 ALSA_AddCaptureDevice(ctl, pcm, pcmname, FALSE);
816 TRACE("Device [%s/%s] failed to open for capture: %s\n",
817 directhw || scan_devices ? "(N/A)" : defaultpcmname,
818 directhw ? hwpcmname : plugpcmname,
830 /*--------------------------------------------------------------------
831 ** If the user has set env variables such that we're pegged to
832 ** a specific card, then break after we've examined it
833 **------------------------------------------------------------------*/
834 if (fixedpcmcard != -1)
842 /*----------------------------------------------------------------------------
843 ** ALSA_PerformDefaultScan
844 ** Perform the basic default scanning for devices within ALSA.
845 ** The hope is that this routine implements a 'correct'
846 ** scanning algorithm from the Alsalib point of view.
848 ** Note that Wine, overall, has other mechanisms to
849 ** override and specify exact CTL and PCM device names,
850 ** but this routine is imagined as the default that
851 ** 99% of users will use.
853 ** The basic algorithm is simple:
854 ** Use snd_card_next to iterate cards; within cards, use
855 ** snd_ctl_pcm_next_device to iterate through devices.
857 ** We add a little complexity by taking into consideration
858 ** environment variables such as ALSA_CARD (et all), and by
859 ** detecting when a given device matches the default specified
863 ** directhw If !0, indicates we should use the hw:X
864 ** PCM interface, rather than first try
865 ** the 'default' device followed by the plughw
866 ** device. (default and plughw do fancy mixing
867 ** and audio scaling, if they are available).
868 ** devscan If TRUE, we should scan all devices, not
869 ** juse use device 0 on each card
875 ** Invokes the ALSA_AddXXXDevice functions on valid
878 static int ALSA_PerformDefaultScan(int directhw, BOOL devscan)
880 long defctlcard = -1, defpcmcard = -1, defpcmdev = -1;
881 int fixedctlcard = -1, fixedpcmcard = -1, fixedpcmdev = -1;
884 /* FIXME: We should dlsym the new snd_names_list/snd_names_list_free 1.0.9 apis,
885 ** and use them instead of this scan mechanism if they are present */
887 rc = ALSA_DefaultDevices(directhw, &defctlcard, &defpcmcard, &defpcmdev,
888 &fixedctlcard, &fixedpcmcard, &fixedpcmdev);
892 if (fixedpcmdev == -1 && ! devscan)
895 return(ALSA_ScanDevices(directhw, defctlcard, defpcmcard, defpcmdev, fixedctlcard, fixedpcmcard, fixedpcmdev));
899 /*----------------------------------------------------------------------------
900 ** ALSA_AddUserSpecifiedDevice
901 ** Add a device given from the registry
903 static int ALSA_AddUserSpecifiedDevice(const char *ctlname, const char *pcmname)
907 snd_ctl_t *ctl = NULL;
908 snd_pcm_t *pcm = NULL;
912 rc = snd_ctl_open(&ctl, ctlname, SND_CTL_NONBLOCK);
917 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
920 ALSA_AddPlaybackDevice(ctl, pcm, pcmname, FALSE);
925 rc = snd_pcm_open(&pcm, pcmname, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
928 ALSA_AddCaptureDevice(ctl, pcm, pcmname, FALSE);
940 /*----------------------------------------------------------------------------
942 ** Initialize the Wine Alsa sub system.
943 ** The main task is to probe for and store a list of all appropriate playback
944 ** and capture devices.
945 ** Key control points are from the registry key:
946 ** [Software\Wine\Alsa Driver]
947 ** AutoScanCards Whether or not to scan all known sound cards
948 ** and add them to Wine's list (default yes)
949 ** AutoScanDevices Whether or not to scan all known PCM devices
950 ** on each card (default no)
951 ** UseDirectHW Whether or not to use the hw:X device,
952 ** instead of the fancy default:X or plughw:X device.
953 ** The hw:X device goes straight to the hardware
954 ** without any fancy mixing or audio scaling in between.
955 ** DeviceCount If present, specifies the number of hard coded
956 ** Alsa devices to add to Wine's list; default 0
957 ** DevicePCMn Specifies the Alsa PCM devices to open for
958 ** Device n (where n goes from 1 to DeviceCount)
959 ** DeviceCTLn Specifies the Alsa control devices to open for
960 ** Device n (where n goes from 1 to DeviceCount)
962 ** Using AutoScanCards no, and then Devicexxx info
963 ** is a way to exactly specify the devices used by Wine.
966 LONG ALSA_WaveInit(void)
969 BOOL AutoScanCards = TRUE;
970 BOOL AutoScanDevices = FALSE;
971 BOOL UseDirectHW = FALSE;
972 DWORD DeviceCount = 0;
976 if (!wine_dlopen("libasound.so.2", RTLD_LAZY|RTLD_GLOBAL, NULL, 0))
978 ERR("Error: ALSA lib needs to be loaded with flags RTLD_LAZY and RTLD_GLOBAL.\n");
982 /* @@ Wine registry key: HKCU\Software\Wine\Alsa Driver */
983 rc = RegOpenKeyExA(HKEY_CURRENT_USER, "Software\\Wine\\Alsa Driver", 0, KEY_QUERY_VALUE, &key);
984 if (rc == ERROR_SUCCESS)
986 ALSA_RegGetBoolean(key, "AutoScanCards", &AutoScanCards);
987 ALSA_RegGetBoolean(key, "AutoScanDevices", &AutoScanDevices);
988 ALSA_RegGetBoolean(key, "UseDirectHW", &UseDirectHW);
989 ALSA_RegGetInt(key, "DeviceCount", &DeviceCount);
993 rc = ALSA_PerformDefaultScan(UseDirectHW, AutoScanDevices);
995 for (i = 0; i < DeviceCount; i++)
997 char *ctl_name = NULL;
998 char *pcm_name = NULL;
1001 sprintf(value, "DevicePCM%d", i + 1);
1002 if (ALSA_RegGetString(key, value, &pcm_name) == ERROR_SUCCESS)
1004 sprintf(value, "DeviceCTL%d", i + 1);
1005 ALSA_RegGetString(key, value, &ctl_name);
1006 ALSA_AddUserSpecifiedDevice(ctl_name, pcm_name);
1009 HeapFree(GetProcessHeap(), 0, ctl_name);
1010 HeapFree(GetProcessHeap(), 0, pcm_name);
1019 #endif /* HAVE_ALSA */