2 * Digital Audio (PCM) abstract layer / OSS compatible
3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 #include <linux/init.h>
30 #include <linux/slab.h>
31 #include <linux/time.h>
32 #include <linux/vmalloc.h>
33 #include <linux/moduleparam.h>
34 #include <linux/string.h>
35 #include <sound/core.h>
36 #include <sound/minors.h>
37 #include <sound/pcm.h>
38 #include <sound/pcm_params.h>
39 #include "pcm_plugin.h"
40 #include <sound/info.h>
41 #include <linux/soundcard.h>
42 #include <sound/initval.h>
44 #define OSS_ALSAEMULVER _SIOR ('M', 249, int)
46 static int dsp_map
[SNDRV_CARDS
];
47 static int adsp_map
[SNDRV_CARDS
] = {[0 ... (SNDRV_CARDS
-1)] = 1};
48 static int nonblock_open
= 1;
50 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, Abramo Bagnara <abramo@alsa-project.org>");
51 MODULE_DESCRIPTION("PCM OSS emulation for ALSA.");
52 MODULE_LICENSE("GPL");
53 module_param_array(dsp_map
, int, NULL
, 0444);
54 MODULE_PARM_DESC(dsp_map
, "PCM device number assigned to 1st OSS device.");
55 module_param_array(adsp_map
, int, NULL
, 0444);
56 MODULE_PARM_DESC(adsp_map
, "PCM device number assigned to 2nd OSS device.");
57 module_param(nonblock_open
, bool, 0644);
58 MODULE_PARM_DESC(nonblock_open
, "Don't block opening busy PCM devices.");
59 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM
);
60 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM1
);
62 extern int snd_mixer_oss_ioctl_card(struct snd_card
*card
, unsigned int cmd
, unsigned long arg
);
63 static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file
*pcm_oss_file
);
64 static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file
*pcm_oss_file
);
65 static int snd_pcm_oss_get_format(struct snd_pcm_oss_file
*pcm_oss_file
);
67 static inline mm_segment_t
snd_enter_user(void)
69 mm_segment_t fs
= get_fs();
74 static inline void snd_leave_user(mm_segment_t fs
)
80 * helper functions to process hw_params
82 static int snd_interval_refine_min(struct snd_interval
*i
, unsigned int min
, int openmin
)
89 } else if (i
->min
== min
&& !i
->openmin
&& openmin
) {
99 if (snd_interval_checkempty(i
)) {
100 snd_interval_none(i
);
106 static int snd_interval_refine_max(struct snd_interval
*i
, unsigned int max
, int openmax
)
111 i
->openmax
= openmax
;
113 } else if (i
->max
== max
&& !i
->openmax
&& openmax
) {
123 if (snd_interval_checkempty(i
)) {
124 snd_interval_none(i
);
130 static int snd_interval_refine_set(struct snd_interval
*i
, unsigned int val
)
132 struct snd_interval t
;
135 t
.openmin
= t
.openmax
= 0;
137 return snd_interval_refine(i
, &t
);
141 * snd_pcm_hw_param_value_min
142 * @params: the hw_params instance
143 * @var: parameter to retrieve
144 * @dir: pointer to the direction (-1,0,1) or NULL
146 * Return the minimum value for field PAR.
149 snd_pcm_hw_param_value_min(const struct snd_pcm_hw_params
*params
,
150 snd_pcm_hw_param_t var
, int *dir
)
152 if (hw_is_mask(var
)) {
155 return snd_mask_min(hw_param_mask_c(params
, var
));
157 if (hw_is_interval(var
)) {
158 const struct snd_interval
*i
= hw_param_interval_c(params
, var
);
161 return snd_interval_min(i
);
167 * snd_pcm_hw_param_value_max
168 * @params: the hw_params instance
169 * @var: parameter to retrieve
170 * @dir: pointer to the direction (-1,0,1) or NULL
172 * Return the maximum value for field PAR.
175 snd_pcm_hw_param_value_max(const struct snd_pcm_hw_params
*params
,
176 snd_pcm_hw_param_t var
, int *dir
)
178 if (hw_is_mask(var
)) {
181 return snd_mask_max(hw_param_mask_c(params
, var
));
183 if (hw_is_interval(var
)) {
184 const struct snd_interval
*i
= hw_param_interval_c(params
, var
);
186 *dir
= - (int) i
->openmax
;
187 return snd_interval_max(i
);
192 static int _snd_pcm_hw_param_mask(struct snd_pcm_hw_params
*params
,
193 snd_pcm_hw_param_t var
,
194 const struct snd_mask
*val
)
197 changed
= snd_mask_refine(hw_param_mask(params
, var
), val
);
199 params
->cmask
|= 1 << var
;
200 params
->rmask
|= 1 << var
;
205 static int snd_pcm_hw_param_mask(struct snd_pcm_substream
*pcm
,
206 struct snd_pcm_hw_params
*params
,
207 snd_pcm_hw_param_t var
,
208 const struct snd_mask
*val
)
210 int changed
= _snd_pcm_hw_param_mask(params
, var
, val
);
214 int err
= snd_pcm_hw_refine(pcm
, params
);
221 static int _snd_pcm_hw_param_min(struct snd_pcm_hw_params
*params
,
222 snd_pcm_hw_param_t var
, unsigned int val
,
230 } else if (dir
< 0) {
238 changed
= snd_mask_refine_min(hw_param_mask(params
, var
),
240 else if (hw_is_interval(var
))
241 changed
= snd_interval_refine_min(hw_param_interval(params
, var
),
246 params
->cmask
|= 1 << var
;
247 params
->rmask
|= 1 << var
;
253 * snd_pcm_hw_param_min
255 * @params: the hw_params instance
256 * @var: parameter to retrieve
257 * @val: minimal value
258 * @dir: pointer to the direction (-1,0,1) or NULL
260 * Inside configuration space defined by PARAMS remove from PAR all
261 * values < VAL. Reduce configuration space accordingly.
262 * Return new minimum or -EINVAL if the configuration space is empty
264 static int snd_pcm_hw_param_min(struct snd_pcm_substream
*pcm
,
265 struct snd_pcm_hw_params
*params
,
266 snd_pcm_hw_param_t var
, unsigned int val
,
269 int changed
= _snd_pcm_hw_param_min(params
, var
, val
, dir
? *dir
: 0);
273 int err
= snd_pcm_hw_refine(pcm
, params
);
277 return snd_pcm_hw_param_value_min(params
, var
, dir
);
280 static int _snd_pcm_hw_param_max(struct snd_pcm_hw_params
*params
,
281 snd_pcm_hw_param_t var
, unsigned int val
,
289 } else if (dir
> 0) {
294 if (hw_is_mask(var
)) {
295 if (val
== 0 && open
) {
296 snd_mask_none(hw_param_mask(params
, var
));
299 changed
= snd_mask_refine_max(hw_param_mask(params
, var
),
301 } else if (hw_is_interval(var
))
302 changed
= snd_interval_refine_max(hw_param_interval(params
, var
),
307 params
->cmask
|= 1 << var
;
308 params
->rmask
|= 1 << var
;
314 * snd_pcm_hw_param_max
316 * @params: the hw_params instance
317 * @var: parameter to retrieve
318 * @val: maximal value
319 * @dir: pointer to the direction (-1,0,1) or NULL
321 * Inside configuration space defined by PARAMS remove from PAR all
322 * values >= VAL + 1. Reduce configuration space accordingly.
323 * Return new maximum or -EINVAL if the configuration space is empty
325 static int snd_pcm_hw_param_max(struct snd_pcm_substream
*pcm
,
326 struct snd_pcm_hw_params
*params
,
327 snd_pcm_hw_param_t var
, unsigned int val
,
330 int changed
= _snd_pcm_hw_param_max(params
, var
, val
, dir
? *dir
: 0);
334 int err
= snd_pcm_hw_refine(pcm
, params
);
338 return snd_pcm_hw_param_value_max(params
, var
, dir
);
341 static int boundary_sub(int a
, int adir
,
345 adir
= adir
< 0 ? -1 : (adir
> 0 ? 1 : 0);
346 bdir
= bdir
< 0 ? -1 : (bdir
> 0 ? 1 : 0);
351 } else if (*cdir
== 2) {
357 static int boundary_lt(unsigned int a
, int adir
,
358 unsigned int b
, int bdir
)
370 return a
< b
|| (a
== b
&& adir
< bdir
);
373 /* Return 1 if min is nearer to best than max */
374 static int boundary_nearer(int min
, int mindir
,
375 int best
, int bestdir
,
380 boundary_sub(best
, bestdir
, min
, mindir
, &dmin
, &dmindir
);
381 boundary_sub(max
, maxdir
, best
, bestdir
, &dmax
, &dmaxdir
);
382 return boundary_lt(dmin
, dmindir
, dmax
, dmaxdir
);
386 * snd_pcm_hw_param_near
388 * @params: the hw_params instance
389 * @var: parameter to retrieve
390 * @best: value to set
391 * @dir: pointer to the direction (-1,0,1) or NULL
393 * Inside configuration space defined by PARAMS set PAR to the available value
394 * nearest to VAL. Reduce configuration space accordingly.
395 * This function cannot be called for SNDRV_PCM_HW_PARAM_ACCESS,
396 * SNDRV_PCM_HW_PARAM_FORMAT, SNDRV_PCM_HW_PARAM_SUBFORMAT.
397 * Return the value found.
399 static int snd_pcm_hw_param_near(struct snd_pcm_substream
*pcm
,
400 struct snd_pcm_hw_params
*params
,
401 snd_pcm_hw_param_t var
, unsigned int best
,
404 struct snd_pcm_hw_params
*save
= NULL
;
406 unsigned int saved_min
;
410 int valdir
= dir
? *dir
: 0;
415 mindir
= maxdir
= valdir
;
418 else if (maxdir
== 0)
424 save
= kmalloc(sizeof(*save
), GFP_KERNEL
);
429 min
= snd_pcm_hw_param_min(pcm
, params
, var
, min
, &mindir
);
431 struct snd_pcm_hw_params
*params1
;
434 if ((unsigned int)min
== saved_min
&& mindir
== valdir
)
436 params1
= kmalloc(sizeof(*params1
), GFP_KERNEL
);
437 if (params1
== NULL
) {
442 max
= snd_pcm_hw_param_max(pcm
, params1
, var
, max
, &maxdir
);
447 if (boundary_nearer(max
, maxdir
, best
, valdir
, min
, mindir
)) {
454 max
= snd_pcm_hw_param_max(pcm
, params
, var
, max
, &maxdir
);
462 v
= snd_pcm_hw_param_last(pcm
, params
, var
, dir
);
464 v
= snd_pcm_hw_param_first(pcm
, params
, var
, dir
);
469 static int _snd_pcm_hw_param_set(struct snd_pcm_hw_params
*params
,
470 snd_pcm_hw_param_t var
, unsigned int val
,
474 if (hw_is_mask(var
)) {
475 struct snd_mask
*m
= hw_param_mask(params
, var
);
476 if (val
== 0 && dir
< 0) {
484 changed
= snd_mask_refine_set(hw_param_mask(params
, var
), val
);
486 } else if (hw_is_interval(var
)) {
487 struct snd_interval
*i
= hw_param_interval(params
, var
);
488 if (val
== 0 && dir
< 0) {
490 snd_interval_none(i
);
492 changed
= snd_interval_refine_set(i
, val
);
494 struct snd_interval t
;
506 changed
= snd_interval_refine(i
, &t
);
511 params
->cmask
|= 1 << var
;
512 params
->rmask
|= 1 << var
;
518 * snd_pcm_hw_param_set
520 * @params: the hw_params instance
521 * @var: parameter to retrieve
523 * @dir: pointer to the direction (-1,0,1) or NULL
525 * Inside configuration space defined by PARAMS remove from PAR all
526 * values != VAL. Reduce configuration space accordingly.
527 * Return VAL or -EINVAL if the configuration space is empty
529 static int snd_pcm_hw_param_set(struct snd_pcm_substream
*pcm
,
530 struct snd_pcm_hw_params
*params
,
531 snd_pcm_hw_param_t var
, unsigned int val
,
534 int changed
= _snd_pcm_hw_param_set(params
, var
, val
, dir
);
538 int err
= snd_pcm_hw_refine(pcm
, params
);
542 return snd_pcm_hw_param_value(params
, var
, NULL
);
545 static int _snd_pcm_hw_param_setinteger(struct snd_pcm_hw_params
*params
,
546 snd_pcm_hw_param_t var
)
549 changed
= snd_interval_setinteger(hw_param_interval(params
, var
));
551 params
->cmask
|= 1 << var
;
552 params
->rmask
|= 1 << var
;
561 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
562 static int snd_pcm_oss_plugin_clear(struct snd_pcm_substream
*substream
)
564 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
565 struct snd_pcm_plugin
*plugin
, *next
;
567 plugin
= runtime
->oss
.plugin_first
;
570 snd_pcm_plugin_free(plugin
);
573 runtime
->oss
.plugin_first
= runtime
->oss
.plugin_last
= NULL
;
577 static int snd_pcm_plugin_insert(struct snd_pcm_plugin
*plugin
)
579 struct snd_pcm_runtime
*runtime
= plugin
->plug
->runtime
;
580 plugin
->next
= runtime
->oss
.plugin_first
;
582 if (runtime
->oss
.plugin_first
) {
583 runtime
->oss
.plugin_first
->prev
= plugin
;
584 runtime
->oss
.plugin_first
= plugin
;
586 runtime
->oss
.plugin_last
=
587 runtime
->oss
.plugin_first
= plugin
;
592 int snd_pcm_plugin_append(struct snd_pcm_plugin
*plugin
)
594 struct snd_pcm_runtime
*runtime
= plugin
->plug
->runtime
;
596 plugin
->prev
= runtime
->oss
.plugin_last
;
597 if (runtime
->oss
.plugin_last
) {
598 runtime
->oss
.plugin_last
->next
= plugin
;
599 runtime
->oss
.plugin_last
= plugin
;
601 runtime
->oss
.plugin_last
=
602 runtime
->oss
.plugin_first
= plugin
;
606 #endif /* CONFIG_SND_PCM_OSS_PLUGINS */
608 static long snd_pcm_oss_bytes(struct snd_pcm_substream
*substream
, long frames
)
610 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
611 long buffer_size
= snd_pcm_lib_buffer_bytes(substream
);
612 long bytes
= frames_to_bytes(runtime
, frames
);
613 if (buffer_size
== runtime
->oss
.buffer_bytes
)
615 #if BITS_PER_LONG >= 64
616 return runtime
->oss
.buffer_bytes
* bytes
/ buffer_size
;
619 u64 bsize
= (u64
)runtime
->oss
.buffer_bytes
* (u64
)bytes
;
621 div64_32(&bsize
, buffer_size
, &rem
);
627 static long snd_pcm_alsa_frames(struct snd_pcm_substream
*substream
, long bytes
)
629 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
630 long buffer_size
= snd_pcm_lib_buffer_bytes(substream
);
631 if (buffer_size
== runtime
->oss
.buffer_bytes
)
632 return bytes_to_frames(runtime
, bytes
);
633 return bytes_to_frames(runtime
, (buffer_size
* bytes
) / runtime
->oss
.buffer_bytes
);
636 /* define extended formats in the recent OSS versions (if any) */
638 #define AFMT_S32_LE 0x00001000
639 #define AFMT_S32_BE 0x00002000
640 #define AFMT_S24_LE 0x00008000
641 #define AFMT_S24_BE 0x00010000
642 #define AFMT_S24_PACKED 0x00040000
644 /* other supported formats */
645 #define AFMT_FLOAT 0x00004000
646 #define AFMT_SPDIF_RAW 0x00020000
648 /* unsupported formats */
649 #define AFMT_AC3 0x00000400
650 #define AFMT_VORBIS 0x00000800
652 static int snd_pcm_oss_format_from(int format
)
655 case AFMT_MU_LAW
: return SNDRV_PCM_FORMAT_MU_LAW
;
656 case AFMT_A_LAW
: return SNDRV_PCM_FORMAT_A_LAW
;
657 case AFMT_IMA_ADPCM
: return SNDRV_PCM_FORMAT_IMA_ADPCM
;
658 case AFMT_U8
: return SNDRV_PCM_FORMAT_U8
;
659 case AFMT_S16_LE
: return SNDRV_PCM_FORMAT_S16_LE
;
660 case AFMT_S16_BE
: return SNDRV_PCM_FORMAT_S16_BE
;
661 case AFMT_S8
: return SNDRV_PCM_FORMAT_S8
;
662 case AFMT_U16_LE
: return SNDRV_PCM_FORMAT_U16_LE
;
663 case AFMT_U16_BE
: return SNDRV_PCM_FORMAT_U16_BE
;
664 case AFMT_MPEG
: return SNDRV_PCM_FORMAT_MPEG
;
665 case AFMT_S32_LE
: return SNDRV_PCM_FORMAT_S32_LE
;
666 case AFMT_S32_BE
: return SNDRV_PCM_FORMAT_S32_BE
;
667 case AFMT_S24_LE
: return SNDRV_PCM_FORMAT_S24_LE
;
668 case AFMT_S24_BE
: return SNDRV_PCM_FORMAT_S24_BE
;
669 case AFMT_S24_PACKED
: return SNDRV_PCM_FORMAT_S24_3LE
;
670 case AFMT_FLOAT
: return SNDRV_PCM_FORMAT_FLOAT
;
671 case AFMT_SPDIF_RAW
: return SNDRV_PCM_FORMAT_IEC958_SUBFRAME
;
672 default: return SNDRV_PCM_FORMAT_U8
;
676 static int snd_pcm_oss_format_to(int format
)
679 case SNDRV_PCM_FORMAT_MU_LAW
: return AFMT_MU_LAW
;
680 case SNDRV_PCM_FORMAT_A_LAW
: return AFMT_A_LAW
;
681 case SNDRV_PCM_FORMAT_IMA_ADPCM
: return AFMT_IMA_ADPCM
;
682 case SNDRV_PCM_FORMAT_U8
: return AFMT_U8
;
683 case SNDRV_PCM_FORMAT_S16_LE
: return AFMT_S16_LE
;
684 case SNDRV_PCM_FORMAT_S16_BE
: return AFMT_S16_BE
;
685 case SNDRV_PCM_FORMAT_S8
: return AFMT_S8
;
686 case SNDRV_PCM_FORMAT_U16_LE
: return AFMT_U16_LE
;
687 case SNDRV_PCM_FORMAT_U16_BE
: return AFMT_U16_BE
;
688 case SNDRV_PCM_FORMAT_MPEG
: return AFMT_MPEG
;
689 case SNDRV_PCM_FORMAT_S32_LE
: return AFMT_S32_LE
;
690 case SNDRV_PCM_FORMAT_S32_BE
: return AFMT_S32_BE
;
691 case SNDRV_PCM_FORMAT_S24_LE
: return AFMT_S24_LE
;
692 case SNDRV_PCM_FORMAT_S24_BE
: return AFMT_S24_BE
;
693 case SNDRV_PCM_FORMAT_S24_3LE
: return AFMT_S24_PACKED
;
694 case SNDRV_PCM_FORMAT_FLOAT
: return AFMT_FLOAT
;
695 case SNDRV_PCM_FORMAT_IEC958_SUBFRAME
: return AFMT_SPDIF_RAW
;
696 default: return -EINVAL
;
700 static int snd_pcm_oss_period_size(struct snd_pcm_substream
*substream
,
701 struct snd_pcm_hw_params
*oss_params
,
702 struct snd_pcm_hw_params
*slave_params
)
705 size_t oss_buffer_size
, oss_period_size
, oss_periods
;
706 size_t min_period_size
, max_period_size
;
707 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
708 size_t oss_frame_size
;
710 oss_frame_size
= snd_pcm_format_physical_width(params_format(oss_params
)) *
711 params_channels(oss_params
) / 8;
713 oss_buffer_size
= snd_pcm_plug_client_size(substream
,
714 snd_pcm_hw_param_value_max(slave_params
, SNDRV_PCM_HW_PARAM_BUFFER_SIZE
, NULL
)) * oss_frame_size
;
715 oss_buffer_size
= 1 << ld2(oss_buffer_size
);
716 if (atomic_read(&substream
->mmap_count
)) {
717 if (oss_buffer_size
> runtime
->oss
.mmap_bytes
)
718 oss_buffer_size
= runtime
->oss
.mmap_bytes
;
721 if (substream
->oss
.setup
.period_size
> 16)
722 oss_period_size
= substream
->oss
.setup
.period_size
;
723 else if (runtime
->oss
.fragshift
) {
724 oss_period_size
= 1 << runtime
->oss
.fragshift
;
725 if (oss_period_size
> oss_buffer_size
/ 2)
726 oss_period_size
= oss_buffer_size
/ 2;
729 size_t bytes_per_sec
= params_rate(oss_params
) * snd_pcm_format_physical_width(params_format(oss_params
)) * params_channels(oss_params
) / 8;
731 oss_period_size
= oss_buffer_size
;
733 oss_period_size
/= 2;
734 } while (oss_period_size
> bytes_per_sec
);
735 if (runtime
->oss
.subdivision
== 0) {
737 if (oss_period_size
/ sd
> 4096)
739 if (oss_period_size
/ sd
< 4096)
742 sd
= runtime
->oss
.subdivision
;
743 oss_period_size
/= sd
;
744 if (oss_period_size
< 16)
745 oss_period_size
= 16;
748 min_period_size
= snd_pcm_plug_client_size(substream
,
749 snd_pcm_hw_param_value_min(slave_params
, SNDRV_PCM_HW_PARAM_PERIOD_SIZE
, NULL
));
750 min_period_size
*= oss_frame_size
;
751 min_period_size
= 1 << (ld2(min_period_size
- 1) + 1);
752 if (oss_period_size
< min_period_size
)
753 oss_period_size
= min_period_size
;
755 max_period_size
= snd_pcm_plug_client_size(substream
,
756 snd_pcm_hw_param_value_max(slave_params
, SNDRV_PCM_HW_PARAM_PERIOD_SIZE
, NULL
));
757 max_period_size
*= oss_frame_size
;
758 max_period_size
= 1 << ld2(max_period_size
);
759 if (oss_period_size
> max_period_size
)
760 oss_period_size
= max_period_size
;
762 oss_periods
= oss_buffer_size
/ oss_period_size
;
764 if (substream
->oss
.setup
.periods
> 1)
765 oss_periods
= substream
->oss
.setup
.periods
;
767 s
= snd_pcm_hw_param_value_max(slave_params
, SNDRV_PCM_HW_PARAM_PERIODS
, NULL
);
768 if (runtime
->oss
.maxfrags
&& s
> runtime
->oss
.maxfrags
)
769 s
= runtime
->oss
.maxfrags
;
773 s
= snd_pcm_hw_param_value_min(slave_params
, SNDRV_PCM_HW_PARAM_PERIODS
, NULL
);
779 while (oss_period_size
* oss_periods
> oss_buffer_size
)
780 oss_period_size
/= 2;
782 if (oss_period_size
< 16)
784 runtime
->oss
.period_bytes
= oss_period_size
;
785 runtime
->oss
.period_frames
= 1;
786 runtime
->oss
.periods
= oss_periods
;
790 static int choose_rate(struct snd_pcm_substream
*substream
,
791 struct snd_pcm_hw_params
*params
, unsigned int best_rate
)
793 struct snd_interval
*it
;
794 struct snd_pcm_hw_params
*save
;
795 unsigned int rate
, prev
;
797 save
= kmalloc(sizeof(*save
), GFP_KERNEL
);
801 it
= hw_param_interval(save
, SNDRV_PCM_HW_PARAM_RATE
);
803 /* try multiples of the best rate */
806 if (it
->max
< rate
|| (it
->max
== rate
&& it
->openmax
))
808 if (it
->min
< rate
|| (it
->min
== rate
&& !it
->openmin
)) {
810 ret
= snd_pcm_hw_param_set(substream
, params
,
811 SNDRV_PCM_HW_PARAM_RATE
,
813 if (ret
== (int)rate
) {
825 /* not found, use the nearest rate */
827 return snd_pcm_hw_param_near(substream
, params
, SNDRV_PCM_HW_PARAM_RATE
, best_rate
, NULL
);
830 static int snd_pcm_oss_change_params(struct snd_pcm_substream
*substream
)
832 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
833 struct snd_pcm_hw_params
*params
, *sparams
;
834 struct snd_pcm_sw_params
*sw_params
;
835 ssize_t oss_buffer_size
, oss_period_size
;
836 size_t oss_frame_size
;
839 int format
, sformat
, n
;
840 struct snd_mask sformat_mask
;
841 struct snd_mask mask
;
843 if (mutex_lock_interruptible(&runtime
->oss
.params_lock
))
845 sw_params
= kmalloc(sizeof(*sw_params
), GFP_KERNEL
);
846 params
= kmalloc(sizeof(*params
), GFP_KERNEL
);
847 sparams
= kmalloc(sizeof(*sparams
), GFP_KERNEL
);
848 if (!sw_params
|| !params
|| !sparams
) {
849 snd_printd("No memory\n");
854 if (atomic_read(&substream
->mmap_count
))
857 direct
= substream
->oss
.setup
.direct
;
859 _snd_pcm_hw_params_any(sparams
);
860 _snd_pcm_hw_param_setinteger(sparams
, SNDRV_PCM_HW_PARAM_PERIODS
);
861 _snd_pcm_hw_param_min(sparams
, SNDRV_PCM_HW_PARAM_PERIODS
, 2, 0);
862 snd_mask_none(&mask
);
863 if (atomic_read(&substream
->mmap_count
))
864 snd_mask_set(&mask
, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED
);
866 snd_mask_set(&mask
, SNDRV_PCM_ACCESS_RW_INTERLEAVED
);
868 snd_mask_set(&mask
, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED
);
870 err
= snd_pcm_hw_param_mask(substream
, sparams
, SNDRV_PCM_HW_PARAM_ACCESS
, &mask
);
872 snd_printd("No usable accesses\n");
876 choose_rate(substream
, sparams
, runtime
->oss
.rate
);
877 snd_pcm_hw_param_near(substream
, sparams
, SNDRV_PCM_HW_PARAM_CHANNELS
, runtime
->oss
.channels
, NULL
);
879 format
= snd_pcm_oss_format_from(runtime
->oss
.format
);
881 sformat_mask
= *hw_param_mask(sparams
, SNDRV_PCM_HW_PARAM_FORMAT
);
885 sformat
= snd_pcm_plug_slave_format(format
, &sformat_mask
);
887 if (sformat
< 0 || !snd_mask_test(&sformat_mask
, sformat
)) {
888 for (sformat
= 0; sformat
<= SNDRV_PCM_FORMAT_LAST
; sformat
++) {
889 if (snd_mask_test(&sformat_mask
, sformat
) &&
890 snd_pcm_oss_format_to(sformat
) >= 0)
893 if (sformat
> SNDRV_PCM_FORMAT_LAST
) {
894 snd_printd("Cannot find a format!!!\n");
899 err
= _snd_pcm_hw_param_set(sparams
, SNDRV_PCM_HW_PARAM_FORMAT
, sformat
, 0);
904 memcpy(params
, sparams
, sizeof(*params
));
906 _snd_pcm_hw_params_any(params
);
907 _snd_pcm_hw_param_set(params
, SNDRV_PCM_HW_PARAM_ACCESS
,
908 SNDRV_PCM_ACCESS_RW_INTERLEAVED
, 0);
909 _snd_pcm_hw_param_set(params
, SNDRV_PCM_HW_PARAM_FORMAT
,
910 snd_pcm_oss_format_from(runtime
->oss
.format
), 0);
911 _snd_pcm_hw_param_set(params
, SNDRV_PCM_HW_PARAM_CHANNELS
,
912 runtime
->oss
.channels
, 0);
913 _snd_pcm_hw_param_set(params
, SNDRV_PCM_HW_PARAM_RATE
,
914 runtime
->oss
.rate
, 0);
915 pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n",
916 params_access(params
), params_format(params
),
917 params_channels(params
), params_rate(params
));
919 pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n",
920 params_access(sparams
), params_format(sparams
),
921 params_channels(sparams
), params_rate(sparams
));
923 oss_frame_size
= snd_pcm_format_physical_width(params_format(params
)) *
924 params_channels(params
) / 8;
926 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
927 snd_pcm_oss_plugin_clear(substream
);
929 /* add necessary plugins */
930 snd_pcm_oss_plugin_clear(substream
);
931 if ((err
= snd_pcm_plug_format_plugins(substream
,
934 snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err
);
935 snd_pcm_oss_plugin_clear(substream
);
938 if (runtime
->oss
.plugin_first
) {
939 struct snd_pcm_plugin
*plugin
;
940 if ((err
= snd_pcm_plugin_build_io(substream
, sparams
, &plugin
)) < 0) {
941 snd_printd("snd_pcm_plugin_build_io failed: %i\n", err
);
942 snd_pcm_oss_plugin_clear(substream
);
945 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
946 err
= snd_pcm_plugin_append(plugin
);
948 err
= snd_pcm_plugin_insert(plugin
);
951 snd_pcm_oss_plugin_clear(substream
);
958 err
= snd_pcm_oss_period_size(substream
, params
, sparams
);
962 n
= snd_pcm_plug_slave_size(substream
, runtime
->oss
.period_bytes
/ oss_frame_size
);
963 err
= snd_pcm_hw_param_near(substream
, sparams
, SNDRV_PCM_HW_PARAM_PERIOD_SIZE
, n
, NULL
);
967 err
= snd_pcm_hw_param_near(substream
, sparams
, SNDRV_PCM_HW_PARAM_PERIODS
,
968 runtime
->oss
.periods
, NULL
);
972 snd_pcm_kernel_ioctl(substream
, SNDRV_PCM_IOCTL_DROP
, NULL
);
974 if ((err
= snd_pcm_kernel_ioctl(substream
, SNDRV_PCM_IOCTL_HW_PARAMS
, sparams
)) < 0) {
975 snd_printd("HW_PARAMS failed: %i\n", err
);
979 memset(sw_params
, 0, sizeof(*sw_params
));
980 if (runtime
->oss
.trigger
) {
981 sw_params
->start_threshold
= 1;
983 sw_params
->start_threshold
= runtime
->boundary
;
985 if (atomic_read(&substream
->mmap_count
) ||
986 substream
->stream
== SNDRV_PCM_STREAM_CAPTURE
)
987 sw_params
->stop_threshold
= runtime
->boundary
;
989 sw_params
->stop_threshold
= runtime
->buffer_size
;
990 sw_params
->tstamp_mode
= SNDRV_PCM_TSTAMP_NONE
;
991 sw_params
->period_step
= 1;
992 sw_params
->avail_min
= substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
?
993 1 : runtime
->period_size
;
994 if (atomic_read(&substream
->mmap_count
) ||
995 substream
->oss
.setup
.nosilence
) {
996 sw_params
->silence_threshold
= 0;
997 sw_params
->silence_size
= 0;
999 snd_pcm_uframes_t frames
;
1000 frames
= runtime
->period_size
+ 16;
1001 if (frames
> runtime
->buffer_size
)
1002 frames
= runtime
->buffer_size
;
1003 sw_params
->silence_threshold
= frames
;
1004 sw_params
->silence_size
= frames
;
1007 if ((err
= snd_pcm_kernel_ioctl(substream
, SNDRV_PCM_IOCTL_SW_PARAMS
, sw_params
)) < 0) {
1008 snd_printd("SW_PARAMS failed: %i\n", err
);
1012 runtime
->oss
.periods
= params_periods(sparams
);
1013 oss_period_size
= snd_pcm_plug_client_size(substream
, params_period_size(sparams
));
1014 if (oss_period_size
< 0) {
1018 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
1019 if (runtime
->oss
.plugin_first
) {
1020 err
= snd_pcm_plug_alloc(substream
, oss_period_size
);
1025 oss_period_size
*= oss_frame_size
;
1027 oss_buffer_size
= oss_period_size
* runtime
->oss
.periods
;
1028 if (oss_buffer_size
< 0) {
1033 runtime
->oss
.period_bytes
= oss_period_size
;
1034 runtime
->oss
.buffer_bytes
= oss_buffer_size
;
1036 pdprintf("oss: period bytes = %i, buffer bytes = %i\n",
1037 runtime
->oss
.period_bytes
,
1038 runtime
->oss
.buffer_bytes
);
1039 pdprintf("slave: period_size = %i, buffer_size = %i\n",
1040 params_period_size(sparams
),
1041 params_buffer_size(sparams
));
1043 runtime
->oss
.format
= snd_pcm_oss_format_to(params_format(params
));
1044 runtime
->oss
.channels
= params_channels(params
);
1045 runtime
->oss
.rate
= params_rate(params
);
1047 runtime
->oss
.params
= 0;
1048 runtime
->oss
.prepare
= 1;
1049 vfree(runtime
->oss
.buffer
);
1050 runtime
->oss
.buffer
= vmalloc(runtime
->oss
.period_bytes
);
1051 runtime
->oss
.buffer_used
= 0;
1052 if (runtime
->dma_area
)
1053 snd_pcm_format_set_silence(runtime
->format
, runtime
->dma_area
, bytes_to_samples(runtime
, runtime
->dma_bytes
));
1055 runtime
->oss
.period_frames
= snd_pcm_alsa_frames(substream
, oss_period_size
);
1062 mutex_unlock(&runtime
->oss
.params_lock
);
1066 static int snd_pcm_oss_get_active_substream(struct snd_pcm_oss_file
*pcm_oss_file
, struct snd_pcm_substream
**r_substream
)
1069 struct snd_pcm_substream
*asubstream
= NULL
, *substream
;
1071 for (idx
= 0; idx
< 2; idx
++) {
1072 substream
= pcm_oss_file
->streams
[idx
];
1073 if (substream
== NULL
)
1075 if (asubstream
== NULL
)
1076 asubstream
= substream
;
1077 if (substream
->runtime
->oss
.params
) {
1078 err
= snd_pcm_oss_change_params(substream
);
1086 *r_substream
= asubstream
;
1090 static int snd_pcm_oss_prepare(struct snd_pcm_substream
*substream
)
1093 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1095 err
= snd_pcm_kernel_ioctl(substream
, SNDRV_PCM_IOCTL_PREPARE
, NULL
);
1097 snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n");
1100 runtime
->oss
.prepare
= 0;
1101 runtime
->oss
.prev_hw_ptr_interrupt
= 0;
1102 runtime
->oss
.period_ptr
= 0;
1103 runtime
->oss
.buffer_used
= 0;
1108 static int snd_pcm_oss_make_ready(struct snd_pcm_substream
*substream
)
1110 struct snd_pcm_runtime
*runtime
;
1113 if (substream
== NULL
)
1115 runtime
= substream
->runtime
;
1116 if (runtime
->oss
.params
) {
1117 err
= snd_pcm_oss_change_params(substream
);
1121 if (runtime
->oss
.prepare
) {
1122 err
= snd_pcm_oss_prepare(substream
);
1129 static int snd_pcm_oss_capture_position_fixup(struct snd_pcm_substream
*substream
, snd_pcm_sframes_t
*delay
)
1131 struct snd_pcm_runtime
*runtime
;
1132 snd_pcm_uframes_t frames
;
1136 err
= snd_pcm_kernel_ioctl(substream
, SNDRV_PCM_IOCTL_DELAY
, delay
);
1139 runtime
= substream
->runtime
;
1140 if (*delay
<= (snd_pcm_sframes_t
)runtime
->buffer_size
)
1142 /* in case of overrun, skip whole periods like OSS/Linux driver does */
1143 /* until avail(delay) <= buffer_size */
1144 frames
= (*delay
- runtime
->buffer_size
) + runtime
->period_size
- 1;
1145 frames
/= runtime
->period_size
;
1146 frames
*= runtime
->period_size
;
1147 err
= snd_pcm_kernel_ioctl(substream
, SNDRV_PCM_IOCTL_FORWARD
, &frames
);
1154 snd_pcm_sframes_t
snd_pcm_oss_write3(struct snd_pcm_substream
*substream
, const char *ptr
, snd_pcm_uframes_t frames
, int in_kernel
)
1156 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1159 if (runtime
->status
->state
== SNDRV_PCM_STATE_XRUN
||
1160 runtime
->status
->state
== SNDRV_PCM_STATE_SUSPENDED
) {
1162 if (runtime
->status
->state
== SNDRV_PCM_STATE_XRUN
)
1163 printk(KERN_DEBUG
"pcm_oss: write: "
1164 "recovering from XRUN\n");
1166 printk(KERN_DEBUG
"pcm_oss: write: "
1167 "recovering from SUSPEND\n");
1169 ret
= snd_pcm_oss_prepare(substream
);
1175 fs
= snd_enter_user();
1176 ret
= snd_pcm_lib_write(substream
, (void __user
*)ptr
, frames
);
1179 ret
= snd_pcm_lib_write(substream
, (void __user
*)ptr
, frames
);
1181 if (ret
!= -EPIPE
&& ret
!= -ESTRPIPE
)
1183 /* test, if we can't store new data, because the stream */
1184 /* has not been started */
1185 if (runtime
->status
->state
== SNDRV_PCM_STATE_PREPARED
)
1191 snd_pcm_sframes_t
snd_pcm_oss_read3(struct snd_pcm_substream
*substream
, char *ptr
, snd_pcm_uframes_t frames
, int in_kernel
)
1193 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1194 snd_pcm_sframes_t delay
;
1197 if (runtime
->status
->state
== SNDRV_PCM_STATE_XRUN
||
1198 runtime
->status
->state
== SNDRV_PCM_STATE_SUSPENDED
) {
1200 if (runtime
->status
->state
== SNDRV_PCM_STATE_XRUN
)
1201 printk(KERN_DEBUG
"pcm_oss: read: "
1202 "recovering from XRUN\n");
1204 printk(KERN_DEBUG
"pcm_oss: read: "
1205 "recovering from SUSPEND\n");
1207 ret
= snd_pcm_kernel_ioctl(substream
, SNDRV_PCM_IOCTL_DRAIN
, NULL
);
1210 } else if (runtime
->status
->state
== SNDRV_PCM_STATE_SETUP
) {
1211 ret
= snd_pcm_oss_prepare(substream
);
1215 ret
= snd_pcm_oss_capture_position_fixup(substream
, &delay
);
1220 fs
= snd_enter_user();
1221 ret
= snd_pcm_lib_read(substream
, (void __user
*)ptr
, frames
);
1224 ret
= snd_pcm_lib_read(substream
, (void __user
*)ptr
, frames
);
1226 if (ret
== -EPIPE
) {
1227 if (runtime
->status
->state
== SNDRV_PCM_STATE_DRAINING
) {
1228 ret
= snd_pcm_kernel_ioctl(substream
, SNDRV_PCM_IOCTL_DROP
, NULL
);
1234 if (ret
!= -ESTRPIPE
)
1240 snd_pcm_sframes_t
snd_pcm_oss_writev3(struct snd_pcm_substream
*substream
, void **bufs
, snd_pcm_uframes_t frames
, int in_kernel
)
1242 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1245 if (runtime
->status
->state
== SNDRV_PCM_STATE_XRUN
||
1246 runtime
->status
->state
== SNDRV_PCM_STATE_SUSPENDED
) {
1248 if (runtime
->status
->state
== SNDRV_PCM_STATE_XRUN
)
1249 printk(KERN_DEBUG
"pcm_oss: writev: "
1250 "recovering from XRUN\n");
1252 printk(KERN_DEBUG
"pcm_oss: writev: "
1253 "recovering from SUSPEND\n");
1255 ret
= snd_pcm_oss_prepare(substream
);
1261 fs
= snd_enter_user();
1262 ret
= snd_pcm_lib_writev(substream
, (void __user
**)bufs
, frames
);
1265 ret
= snd_pcm_lib_writev(substream
, (void __user
**)bufs
, frames
);
1267 if (ret
!= -EPIPE
&& ret
!= -ESTRPIPE
)
1270 /* test, if we can't store new data, because the stream */
1271 /* has not been started */
1272 if (runtime
->status
->state
== SNDRV_PCM_STATE_PREPARED
)
1278 snd_pcm_sframes_t
snd_pcm_oss_readv3(struct snd_pcm_substream
*substream
, void **bufs
, snd_pcm_uframes_t frames
, int in_kernel
)
1280 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1283 if (runtime
->status
->state
== SNDRV_PCM_STATE_XRUN
||
1284 runtime
->status
->state
== SNDRV_PCM_STATE_SUSPENDED
) {
1286 if (runtime
->status
->state
== SNDRV_PCM_STATE_XRUN
)
1287 printk(KERN_DEBUG
"pcm_oss: readv: "
1288 "recovering from XRUN\n");
1290 printk(KERN_DEBUG
"pcm_oss: readv: "
1291 "recovering from SUSPEND\n");
1293 ret
= snd_pcm_kernel_ioctl(substream
, SNDRV_PCM_IOCTL_DRAIN
, NULL
);
1296 } else if (runtime
->status
->state
== SNDRV_PCM_STATE_SETUP
) {
1297 ret
= snd_pcm_oss_prepare(substream
);
1303 fs
= snd_enter_user();
1304 ret
= snd_pcm_lib_readv(substream
, (void __user
**)bufs
, frames
);
1307 ret
= snd_pcm_lib_readv(substream
, (void __user
**)bufs
, frames
);
1309 if (ret
!= -EPIPE
&& ret
!= -ESTRPIPE
)
1315 static ssize_t
snd_pcm_oss_write2(struct snd_pcm_substream
*substream
, const char *buf
, size_t bytes
, int in_kernel
)
1317 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1318 snd_pcm_sframes_t frames
, frames1
;
1319 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
1320 if (runtime
->oss
.plugin_first
) {
1321 struct snd_pcm_plugin_channel
*channels
;
1322 size_t oss_frame_bytes
= (runtime
->oss
.plugin_first
->src_width
* runtime
->oss
.plugin_first
->src_format
.channels
) / 8;
1324 if (copy_from_user(runtime
->oss
.buffer
, (const char __user
*)buf
, bytes
))
1326 buf
= runtime
->oss
.buffer
;
1328 frames
= bytes
/ oss_frame_bytes
;
1329 frames1
= snd_pcm_plug_client_channels_buf(substream
, (char *)buf
, frames
, &channels
);
1332 frames1
= snd_pcm_plug_write_transfer(substream
, channels
, frames1
);
1335 bytes
= frames1
* oss_frame_bytes
;
1339 frames
= bytes_to_frames(runtime
, bytes
);
1340 frames1
= snd_pcm_oss_write3(substream
, buf
, frames
, in_kernel
);
1343 bytes
= frames_to_bytes(runtime
, frames1
);
1348 static ssize_t
snd_pcm_oss_write1(struct snd_pcm_substream
*substream
, const char __user
*buf
, size_t bytes
)
1352 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1354 if (atomic_read(&substream
->mmap_count
))
1357 if ((tmp
= snd_pcm_oss_make_ready(substream
)) < 0)
1359 mutex_lock(&runtime
->oss
.params_lock
);
1361 if (bytes
< runtime
->oss
.period_bytes
|| runtime
->oss
.buffer_used
> 0) {
1363 if (tmp
+ runtime
->oss
.buffer_used
> runtime
->oss
.period_bytes
)
1364 tmp
= runtime
->oss
.period_bytes
- runtime
->oss
.buffer_used
;
1366 if (copy_from_user(runtime
->oss
.buffer
+ runtime
->oss
.buffer_used
, buf
, tmp
)) {
1371 runtime
->oss
.buffer_used
+= tmp
;
1375 if (substream
->oss
.setup
.partialfrag
||
1376 runtime
->oss
.buffer_used
== runtime
->oss
.period_bytes
) {
1377 tmp
= snd_pcm_oss_write2(substream
, runtime
->oss
.buffer
+ runtime
->oss
.period_ptr
,
1378 runtime
->oss
.buffer_used
- runtime
->oss
.period_ptr
, 1);
1381 runtime
->oss
.bytes
+= tmp
;
1382 runtime
->oss
.period_ptr
+= tmp
;
1383 runtime
->oss
.period_ptr
%= runtime
->oss
.period_bytes
;
1384 if (runtime
->oss
.period_ptr
== 0 ||
1385 runtime
->oss
.period_ptr
== runtime
->oss
.buffer_used
)
1386 runtime
->oss
.buffer_used
= 0;
1387 else if ((substream
->f_flags
& O_NONBLOCK
) != 0) {
1393 tmp
= snd_pcm_oss_write2(substream
,
1394 (const char __force
*)buf
,
1395 runtime
->oss
.period_bytes
, 0);
1398 runtime
->oss
.bytes
+= tmp
;
1402 if ((substream
->f_flags
& O_NONBLOCK
) != 0 &&
1403 tmp
!= runtime
->oss
.period_bytes
)
1407 mutex_unlock(&runtime
->oss
.params_lock
);
1411 mutex_unlock(&runtime
->oss
.params_lock
);
1412 return xfer
> 0 ? (snd_pcm_sframes_t
)xfer
: tmp
;
1415 static ssize_t
snd_pcm_oss_read2(struct snd_pcm_substream
*substream
, char *buf
, size_t bytes
, int in_kernel
)
1417 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1418 snd_pcm_sframes_t frames
, frames1
;
1419 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
1420 char __user
*final_dst
= (char __user
*)buf
;
1421 if (runtime
->oss
.plugin_first
) {
1422 struct snd_pcm_plugin_channel
*channels
;
1423 size_t oss_frame_bytes
= (runtime
->oss
.plugin_last
->dst_width
* runtime
->oss
.plugin_last
->dst_format
.channels
) / 8;
1425 buf
= runtime
->oss
.buffer
;
1426 frames
= bytes
/ oss_frame_bytes
;
1427 frames1
= snd_pcm_plug_client_channels_buf(substream
, buf
, frames
, &channels
);
1430 frames1
= snd_pcm_plug_read_transfer(substream
, channels
, frames1
);
1433 bytes
= frames1
* oss_frame_bytes
;
1434 if (!in_kernel
&& copy_to_user(final_dst
, buf
, bytes
))
1439 frames
= bytes_to_frames(runtime
, bytes
);
1440 frames1
= snd_pcm_oss_read3(substream
, buf
, frames
, in_kernel
);
1443 bytes
= frames_to_bytes(runtime
, frames1
);
1448 static ssize_t
snd_pcm_oss_read1(struct snd_pcm_substream
*substream
, char __user
*buf
, size_t bytes
)
1452 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1454 if (atomic_read(&substream
->mmap_count
))
1457 if ((tmp
= snd_pcm_oss_make_ready(substream
)) < 0)
1459 mutex_lock(&runtime
->oss
.params_lock
);
1461 if (bytes
< runtime
->oss
.period_bytes
|| runtime
->oss
.buffer_used
> 0) {
1462 if (runtime
->oss
.buffer_used
== 0) {
1463 tmp
= snd_pcm_oss_read2(substream
, runtime
->oss
.buffer
, runtime
->oss
.period_bytes
, 1);
1466 runtime
->oss
.bytes
+= tmp
;
1467 runtime
->oss
.period_ptr
= tmp
;
1468 runtime
->oss
.buffer_used
= tmp
;
1471 if ((size_t) tmp
> runtime
->oss
.buffer_used
)
1472 tmp
= runtime
->oss
.buffer_used
;
1473 if (copy_to_user(buf
, runtime
->oss
.buffer
+ (runtime
->oss
.period_ptr
- runtime
->oss
.buffer_used
), tmp
)) {
1480 runtime
->oss
.buffer_used
-= tmp
;
1482 tmp
= snd_pcm_oss_read2(substream
, (char __force
*)buf
,
1483 runtime
->oss
.period_bytes
, 0);
1486 runtime
->oss
.bytes
+= tmp
;
1492 mutex_unlock(&runtime
->oss
.params_lock
);
1496 mutex_unlock(&runtime
->oss
.params_lock
);
1497 return xfer
> 0 ? (snd_pcm_sframes_t
)xfer
: tmp
;
1500 static int snd_pcm_oss_reset(struct snd_pcm_oss_file
*pcm_oss_file
)
1502 struct snd_pcm_substream
*substream
;
1504 substream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_PLAYBACK
];
1505 if (substream
!= NULL
) {
1506 snd_pcm_kernel_ioctl(substream
, SNDRV_PCM_IOCTL_DROP
, NULL
);
1507 substream
->runtime
->oss
.prepare
= 1;
1509 substream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_CAPTURE
];
1510 if (substream
!= NULL
) {
1511 snd_pcm_kernel_ioctl(substream
, SNDRV_PCM_IOCTL_DROP
, NULL
);
1512 substream
->runtime
->oss
.prepare
= 1;
1517 static int snd_pcm_oss_post(struct snd_pcm_oss_file
*pcm_oss_file
)
1519 struct snd_pcm_substream
*substream
;
1522 substream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_PLAYBACK
];
1523 if (substream
!= NULL
) {
1524 if ((err
= snd_pcm_oss_make_ready(substream
)) < 0)
1526 snd_pcm_kernel_ioctl(substream
, SNDRV_PCM_IOCTL_START
, NULL
);
1528 /* note: all errors from the start action are ignored */
1529 /* OSS apps do not know, how to handle them */
1533 static int snd_pcm_oss_sync1(struct snd_pcm_substream
*substream
, size_t size
)
1535 struct snd_pcm_runtime
*runtime
;
1540 runtime
= substream
->runtime
;
1541 init_waitqueue_entry(&wait
, current
);
1542 add_wait_queue(&runtime
->sleep
, &wait
);
1544 printk(KERN_DEBUG
"sync1: size = %li\n", size
);
1547 result
= snd_pcm_oss_write2(substream
, runtime
->oss
.buffer
, size
, 1);
1549 runtime
->oss
.buffer_used
= 0;
1553 if (result
!= 0 && result
!= -EAGAIN
)
1556 set_current_state(TASK_INTERRUPTIBLE
);
1557 snd_pcm_stream_lock_irq(substream
);
1558 res
= runtime
->status
->state
;
1559 snd_pcm_stream_unlock_irq(substream
);
1560 if (res
!= SNDRV_PCM_STATE_RUNNING
) {
1561 set_current_state(TASK_RUNNING
);
1564 res
= schedule_timeout(10 * HZ
);
1565 if (signal_pending(current
)) {
1566 result
= -ERESTARTSYS
;
1570 snd_printk(KERN_ERR
"OSS sync error - DMA timeout\n");
1575 remove_wait_queue(&runtime
->sleep
, &wait
);
1579 static int snd_pcm_oss_sync(struct snd_pcm_oss_file
*pcm_oss_file
)
1582 unsigned int saved_f_flags
;
1583 struct snd_pcm_substream
*substream
;
1584 struct snd_pcm_runtime
*runtime
;
1585 snd_pcm_format_t format
;
1586 unsigned long width
;
1589 substream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_PLAYBACK
];
1590 if (substream
!= NULL
) {
1591 runtime
= substream
->runtime
;
1592 if (atomic_read(&substream
->mmap_count
))
1594 if ((err
= snd_pcm_oss_make_ready(substream
)) < 0)
1596 format
= snd_pcm_oss_format_from(runtime
->oss
.format
);
1597 width
= snd_pcm_format_physical_width(format
);
1598 mutex_lock(&runtime
->oss
.params_lock
);
1599 if (runtime
->oss
.buffer_used
> 0) {
1601 printk(KERN_DEBUG
"sync: buffer_used\n");
1603 size
= (8 * (runtime
->oss
.period_bytes
- runtime
->oss
.buffer_used
) + 7) / width
;
1604 snd_pcm_format_set_silence(format
,
1605 runtime
->oss
.buffer
+ runtime
->oss
.buffer_used
,
1607 err
= snd_pcm_oss_sync1(substream
, runtime
->oss
.period_bytes
);
1609 mutex_unlock(&runtime
->oss
.params_lock
);
1612 } else if (runtime
->oss
.period_ptr
> 0) {
1614 printk(KERN_DEBUG
"sync: period_ptr\n");
1616 size
= runtime
->oss
.period_bytes
- runtime
->oss
.period_ptr
;
1617 snd_pcm_format_set_silence(format
,
1618 runtime
->oss
.buffer
,
1620 err
= snd_pcm_oss_sync1(substream
, size
);
1622 mutex_unlock(&runtime
->oss
.params_lock
);
1627 * The ALSA's period might be a bit large than OSS one.
1628 * Fill the remain portion of ALSA period with zeros.
1630 size
= runtime
->control
->appl_ptr
% runtime
->period_size
;
1632 size
= runtime
->period_size
- size
;
1633 if (runtime
->access
== SNDRV_PCM_ACCESS_RW_INTERLEAVED
) {
1634 size
= (runtime
->frame_bits
* size
) / 8;
1637 size_t size1
= size
< runtime
->oss
.period_bytes
? size
: runtime
->oss
.period_bytes
;
1640 size1
/= runtime
->sample_bits
;
1641 snd_pcm_format_set_silence(runtime
->format
,
1642 runtime
->oss
.buffer
,
1644 size1
/= runtime
->channels
; /* frames */
1645 fs
= snd_enter_user();
1646 snd_pcm_lib_write(substream
, (void __user
*)runtime
->oss
.buffer
, size1
);
1649 } else if (runtime
->access
== SNDRV_PCM_ACCESS_RW_NONINTERLEAVED
) {
1650 void __user
*buffers
[runtime
->channels
];
1651 memset(buffers
, 0, runtime
->channels
* sizeof(void *));
1652 snd_pcm_lib_writev(substream
, buffers
, size
);
1655 mutex_unlock(&runtime
->oss
.params_lock
);
1657 * finish sync: drain the buffer
1660 saved_f_flags
= substream
->f_flags
;
1661 substream
->f_flags
&= ~O_NONBLOCK
;
1662 err
= snd_pcm_kernel_ioctl(substream
, SNDRV_PCM_IOCTL_DRAIN
, NULL
);
1663 substream
->f_flags
= saved_f_flags
;
1666 runtime
->oss
.prepare
= 1;
1669 substream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_CAPTURE
];
1670 if (substream
!= NULL
) {
1671 if ((err
= snd_pcm_oss_make_ready(substream
)) < 0)
1673 runtime
= substream
->runtime
;
1674 err
= snd_pcm_kernel_ioctl(substream
, SNDRV_PCM_IOCTL_DROP
, NULL
);
1677 runtime
->oss
.buffer_used
= 0;
1678 runtime
->oss
.prepare
= 1;
1683 static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file
*pcm_oss_file
, int rate
)
1687 for (idx
= 1; idx
>= 0; --idx
) {
1688 struct snd_pcm_substream
*substream
= pcm_oss_file
->streams
[idx
];
1689 struct snd_pcm_runtime
*runtime
;
1690 if (substream
== NULL
)
1692 runtime
= substream
->runtime
;
1695 else if (rate
> 192000)
1697 if (runtime
->oss
.rate
!= rate
) {
1698 runtime
->oss
.params
= 1;
1699 runtime
->oss
.rate
= rate
;
1702 return snd_pcm_oss_get_rate(pcm_oss_file
);
1705 static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file
*pcm_oss_file
)
1707 struct snd_pcm_substream
*substream
;
1710 if ((err
= snd_pcm_oss_get_active_substream(pcm_oss_file
, &substream
)) < 0)
1712 return substream
->runtime
->oss
.rate
;
1715 static int snd_pcm_oss_set_channels(struct snd_pcm_oss_file
*pcm_oss_file
, unsigned int channels
)
1722 for (idx
= 1; idx
>= 0; --idx
) {
1723 struct snd_pcm_substream
*substream
= pcm_oss_file
->streams
[idx
];
1724 struct snd_pcm_runtime
*runtime
;
1725 if (substream
== NULL
)
1727 runtime
= substream
->runtime
;
1728 if (runtime
->oss
.channels
!= channels
) {
1729 runtime
->oss
.params
= 1;
1730 runtime
->oss
.channels
= channels
;
1733 return snd_pcm_oss_get_channels(pcm_oss_file
);
1736 static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file
*pcm_oss_file
)
1738 struct snd_pcm_substream
*substream
;
1741 if ((err
= snd_pcm_oss_get_active_substream(pcm_oss_file
, &substream
)) < 0)
1743 return substream
->runtime
->oss
.channels
;
1746 static int snd_pcm_oss_get_block_size(struct snd_pcm_oss_file
*pcm_oss_file
)
1748 struct snd_pcm_substream
*substream
;
1751 if ((err
= snd_pcm_oss_get_active_substream(pcm_oss_file
, &substream
)) < 0)
1753 return substream
->runtime
->oss
.period_bytes
;
1756 static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file
*pcm_oss_file
)
1758 struct snd_pcm_substream
*substream
;
1761 struct snd_pcm_hw_params
*params
;
1762 unsigned int formats
= 0;
1763 struct snd_mask format_mask
;
1766 if ((err
= snd_pcm_oss_get_active_substream(pcm_oss_file
, &substream
)) < 0)
1768 if (atomic_read(&substream
->mmap_count
))
1771 direct
= substream
->oss
.setup
.direct
;
1773 return AFMT_MU_LAW
| AFMT_U8
|
1774 AFMT_S16_LE
| AFMT_S16_BE
|
1775 AFMT_S8
| AFMT_U16_LE
|
1777 AFMT_S32_LE
| AFMT_S32_BE
|
1778 AFMT_S24_LE
| AFMT_S24_BE
|
1780 params
= kmalloc(sizeof(*params
), GFP_KERNEL
);
1783 _snd_pcm_hw_params_any(params
);
1784 err
= snd_pcm_hw_refine(substream
, params
);
1785 format_mask
= *hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
);
1789 for (fmt
= 0; fmt
< 32; ++fmt
) {
1790 if (snd_mask_test(&format_mask
, fmt
)) {
1791 int f
= snd_pcm_oss_format_to(fmt
);
1799 static int snd_pcm_oss_set_format(struct snd_pcm_oss_file
*pcm_oss_file
, int format
)
1803 if (format
!= AFMT_QUERY
) {
1804 formats
= snd_pcm_oss_get_formats(pcm_oss_file
);
1807 if (!(formats
& format
))
1809 for (idx
= 1; idx
>= 0; --idx
) {
1810 struct snd_pcm_substream
*substream
= pcm_oss_file
->streams
[idx
];
1811 struct snd_pcm_runtime
*runtime
;
1812 if (substream
== NULL
)
1814 runtime
= substream
->runtime
;
1815 if (runtime
->oss
.format
!= format
) {
1816 runtime
->oss
.params
= 1;
1817 runtime
->oss
.format
= format
;
1821 return snd_pcm_oss_get_format(pcm_oss_file
);
1824 static int snd_pcm_oss_get_format(struct snd_pcm_oss_file
*pcm_oss_file
)
1826 struct snd_pcm_substream
*substream
;
1829 if ((err
= snd_pcm_oss_get_active_substream(pcm_oss_file
, &substream
)) < 0)
1831 return substream
->runtime
->oss
.format
;
1834 static int snd_pcm_oss_set_subdivide1(struct snd_pcm_substream
*substream
, int subdivide
)
1836 struct snd_pcm_runtime
*runtime
;
1838 if (substream
== NULL
)
1840 runtime
= substream
->runtime
;
1841 if (subdivide
== 0) {
1842 subdivide
= runtime
->oss
.subdivision
;
1847 if (runtime
->oss
.subdivision
|| runtime
->oss
.fragshift
)
1849 if (subdivide
!= 1 && subdivide
!= 2 && subdivide
!= 4 &&
1850 subdivide
!= 8 && subdivide
!= 16)
1852 runtime
->oss
.subdivision
= subdivide
;
1853 runtime
->oss
.params
= 1;
1857 static int snd_pcm_oss_set_subdivide(struct snd_pcm_oss_file
*pcm_oss_file
, int subdivide
)
1859 int err
= -EINVAL
, idx
;
1861 for (idx
= 1; idx
>= 0; --idx
) {
1862 struct snd_pcm_substream
*substream
= pcm_oss_file
->streams
[idx
];
1863 if (substream
== NULL
)
1865 if ((err
= snd_pcm_oss_set_subdivide1(substream
, subdivide
)) < 0)
1871 static int snd_pcm_oss_set_fragment1(struct snd_pcm_substream
*substream
, unsigned int val
)
1873 struct snd_pcm_runtime
*runtime
;
1875 if (substream
== NULL
)
1877 runtime
= substream
->runtime
;
1878 if (runtime
->oss
.subdivision
|| runtime
->oss
.fragshift
)
1880 runtime
->oss
.fragshift
= val
& 0xffff;
1881 runtime
->oss
.maxfrags
= (val
>> 16) & 0xffff;
1882 if (runtime
->oss
.fragshift
< 4) /* < 16 */
1883 runtime
->oss
.fragshift
= 4;
1884 if (runtime
->oss
.maxfrags
< 2)
1885 runtime
->oss
.maxfrags
= 2;
1886 runtime
->oss
.params
= 1;
1890 static int snd_pcm_oss_set_fragment(struct snd_pcm_oss_file
*pcm_oss_file
, unsigned int val
)
1892 int err
= -EINVAL
, idx
;
1894 for (idx
= 1; idx
>= 0; --idx
) {
1895 struct snd_pcm_substream
*substream
= pcm_oss_file
->streams
[idx
];
1896 if (substream
== NULL
)
1898 if ((err
= snd_pcm_oss_set_fragment1(substream
, val
)) < 0)
1904 static int snd_pcm_oss_nonblock(struct file
* file
)
1906 spin_lock(&file
->f_lock
);
1907 file
->f_flags
|= O_NONBLOCK
;
1908 spin_unlock(&file
->f_lock
);
1912 static int snd_pcm_oss_get_caps1(struct snd_pcm_substream
*substream
, int res
)
1915 if (substream
== NULL
) {
1916 res
&= ~DSP_CAP_DUPLEX
;
1919 #ifdef DSP_CAP_MULTI
1920 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
1921 if (substream
->pstr
->substream_count
> 1)
1922 res
|= DSP_CAP_MULTI
;
1924 /* DSP_CAP_REALTIME is set all times: */
1925 /* all ALSA drivers can return actual pointer in ring buffer */
1926 #if defined(DSP_CAP_REALTIME) && 0
1928 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1929 if (runtime
->info
& (SNDRV_PCM_INFO_BLOCK_TRANSFER
|SNDRV_PCM_INFO_BATCH
))
1930 res
&= ~DSP_CAP_REALTIME
;
1936 static int snd_pcm_oss_get_caps(struct snd_pcm_oss_file
*pcm_oss_file
)
1940 result
= DSP_CAP_TRIGGER
| DSP_CAP_MMAP
| DSP_CAP_DUPLEX
| DSP_CAP_REALTIME
;
1941 for (idx
= 0; idx
< 2; idx
++) {
1942 struct snd_pcm_substream
*substream
= pcm_oss_file
->streams
[idx
];
1943 result
= snd_pcm_oss_get_caps1(substream
, result
);
1945 result
|= 0x0001; /* revision - same as SB AWE 64 */
1949 static void snd_pcm_oss_simulate_fill(struct snd_pcm_substream
*substream
, snd_pcm_uframes_t hw_ptr
)
1951 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1952 snd_pcm_uframes_t appl_ptr
;
1953 appl_ptr
= hw_ptr
+ runtime
->buffer_size
;
1954 appl_ptr
%= runtime
->boundary
;
1955 runtime
->control
->appl_ptr
= appl_ptr
;
1958 static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file
*pcm_oss_file
, int trigger
)
1960 struct snd_pcm_runtime
*runtime
;
1961 struct snd_pcm_substream
*psubstream
= NULL
, *csubstream
= NULL
;
1965 printk(KERN_DEBUG
"pcm_oss: trigger = 0x%x\n", trigger
);
1968 psubstream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_PLAYBACK
];
1969 csubstream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_CAPTURE
];
1972 if ((err
= snd_pcm_oss_make_ready(psubstream
)) < 0)
1976 if ((err
= snd_pcm_oss_make_ready(csubstream
)) < 0)
1980 runtime
= psubstream
->runtime
;
1981 if (trigger
& PCM_ENABLE_OUTPUT
) {
1982 if (runtime
->oss
.trigger
)
1984 if (atomic_read(&psubstream
->mmap_count
))
1985 snd_pcm_oss_simulate_fill(psubstream
, runtime
->hw_ptr_interrupt
);
1986 runtime
->oss
.trigger
= 1;
1987 runtime
->start_threshold
= 1;
1988 cmd
= SNDRV_PCM_IOCTL_START
;
1990 if (!runtime
->oss
.trigger
)
1992 runtime
->oss
.trigger
= 0;
1993 runtime
->start_threshold
= runtime
->boundary
;
1994 cmd
= SNDRV_PCM_IOCTL_DROP
;
1995 runtime
->oss
.prepare
= 1;
1997 err
= snd_pcm_kernel_ioctl(psubstream
, cmd
, NULL
);
2003 runtime
= csubstream
->runtime
;
2004 if (trigger
& PCM_ENABLE_INPUT
) {
2005 if (runtime
->oss
.trigger
)
2007 runtime
->oss
.trigger
= 1;
2008 runtime
->start_threshold
= 1;
2009 cmd
= SNDRV_PCM_IOCTL_START
;
2011 if (!runtime
->oss
.trigger
)
2013 runtime
->oss
.trigger
= 0;
2014 runtime
->start_threshold
= runtime
->boundary
;
2015 cmd
= SNDRV_PCM_IOCTL_DROP
;
2016 runtime
->oss
.prepare
= 1;
2018 err
= snd_pcm_kernel_ioctl(csubstream
, cmd
, NULL
);
2026 static int snd_pcm_oss_get_trigger(struct snd_pcm_oss_file
*pcm_oss_file
)
2028 struct snd_pcm_substream
*psubstream
= NULL
, *csubstream
= NULL
;
2031 psubstream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_PLAYBACK
];
2032 csubstream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_CAPTURE
];
2033 if (psubstream
&& psubstream
->runtime
&& psubstream
->runtime
->oss
.trigger
)
2034 result
|= PCM_ENABLE_OUTPUT
;
2035 if (csubstream
&& csubstream
->runtime
&& csubstream
->runtime
->oss
.trigger
)
2036 result
|= PCM_ENABLE_INPUT
;
2040 static int snd_pcm_oss_get_odelay(struct snd_pcm_oss_file
*pcm_oss_file
)
2042 struct snd_pcm_substream
*substream
;
2043 struct snd_pcm_runtime
*runtime
;
2044 snd_pcm_sframes_t delay
;
2047 substream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_PLAYBACK
];
2048 if (substream
== NULL
)
2050 if ((err
= snd_pcm_oss_make_ready(substream
)) < 0)
2052 runtime
= substream
->runtime
;
2053 if (runtime
->oss
.params
|| runtime
->oss
.prepare
)
2055 err
= snd_pcm_kernel_ioctl(substream
, SNDRV_PCM_IOCTL_DELAY
, &delay
);
2057 delay
= 0; /* hack for broken OSS applications */
2060 return snd_pcm_oss_bytes(substream
, delay
);
2063 static int snd_pcm_oss_get_ptr(struct snd_pcm_oss_file
*pcm_oss_file
, int stream
, struct count_info __user
* _info
)
2065 struct snd_pcm_substream
*substream
;
2066 struct snd_pcm_runtime
*runtime
;
2067 snd_pcm_sframes_t delay
;
2069 struct count_info info
;
2074 substream
= pcm_oss_file
->streams
[stream
];
2075 if (substream
== NULL
)
2077 if ((err
= snd_pcm_oss_make_ready(substream
)) < 0)
2079 runtime
= substream
->runtime
;
2080 if (runtime
->oss
.params
|| runtime
->oss
.prepare
) {
2081 memset(&info
, 0, sizeof(info
));
2082 if (copy_to_user(_info
, &info
, sizeof(info
)))
2086 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
2087 err
= snd_pcm_kernel_ioctl(substream
, SNDRV_PCM_IOCTL_DELAY
, &delay
);
2088 if (err
== -EPIPE
|| err
== -ESTRPIPE
|| (! err
&& delay
< 0)) {
2093 fixup
= runtime
->oss
.buffer_used
;
2096 err
= snd_pcm_oss_capture_position_fixup(substream
, &delay
);
2097 fixup
= -runtime
->oss
.buffer_used
;
2101 info
.ptr
= snd_pcm_oss_bytes(substream
, runtime
->status
->hw_ptr
% runtime
->buffer_size
);
2102 if (atomic_read(&substream
->mmap_count
)) {
2103 snd_pcm_sframes_t n
;
2104 n
= (delay
= runtime
->hw_ptr_interrupt
) - runtime
->oss
.prev_hw_ptr_interrupt
;
2106 n
+= runtime
->boundary
;
2107 info
.blocks
= n
/ runtime
->period_size
;
2108 runtime
->oss
.prev_hw_ptr_interrupt
= delay
;
2109 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
2110 snd_pcm_oss_simulate_fill(substream
, delay
);
2111 info
.bytes
= snd_pcm_oss_bytes(substream
, runtime
->status
->hw_ptr
) & INT_MAX
;
2113 delay
= snd_pcm_oss_bytes(substream
, delay
);
2114 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
2115 if (substream
->oss
.setup
.buggyptr
)
2116 info
.blocks
= (runtime
->oss
.buffer_bytes
- delay
- fixup
) / runtime
->oss
.period_bytes
;
2118 info
.blocks
= (delay
+ fixup
) / runtime
->oss
.period_bytes
;
2119 info
.bytes
= (runtime
->oss
.bytes
- delay
) & INT_MAX
;
2122 info
.blocks
= delay
/ runtime
->oss
.period_bytes
;
2123 info
.bytes
= (runtime
->oss
.bytes
+ delay
) & INT_MAX
;
2126 if (copy_to_user(_info
, &info
, sizeof(info
)))
2131 static int snd_pcm_oss_get_space(struct snd_pcm_oss_file
*pcm_oss_file
, int stream
, struct audio_buf_info __user
*_info
)
2133 struct snd_pcm_substream
*substream
;
2134 struct snd_pcm_runtime
*runtime
;
2135 snd_pcm_sframes_t avail
;
2137 struct audio_buf_info info
;
2142 substream
= pcm_oss_file
->streams
[stream
];
2143 if (substream
== NULL
)
2145 runtime
= substream
->runtime
;
2147 if (runtime
->oss
.params
&&
2148 (err
= snd_pcm_oss_change_params(substream
)) < 0)
2151 info
.fragsize
= runtime
->oss
.period_bytes
;
2152 info
.fragstotal
= runtime
->periods
;
2153 if (runtime
->oss
.prepare
) {
2154 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
2155 info
.bytes
= runtime
->oss
.period_bytes
* runtime
->oss
.periods
;
2156 info
.fragments
= runtime
->oss
.periods
;
2162 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
2163 err
= snd_pcm_kernel_ioctl(substream
, SNDRV_PCM_IOCTL_DELAY
, &avail
);
2164 if (err
== -EPIPE
|| err
== -ESTRPIPE
|| (! err
&& avail
< 0)) {
2165 avail
= runtime
->buffer_size
;
2169 avail
= runtime
->buffer_size
- avail
;
2170 fixup
= -runtime
->oss
.buffer_used
;
2173 err
= snd_pcm_oss_capture_position_fixup(substream
, &avail
);
2174 fixup
= runtime
->oss
.buffer_used
;
2178 info
.bytes
= snd_pcm_oss_bytes(substream
, avail
) + fixup
;
2179 info
.fragments
= info
.bytes
/ runtime
->oss
.period_bytes
;
2183 printk(KERN_DEBUG
"pcm_oss: space: bytes = %i, fragments = %i, "
2184 "fragstotal = %i, fragsize = %i\n",
2185 info
.bytes
, info
.fragments
, info
.fragstotal
, info
.fragsize
);
2187 if (copy_to_user(_info
, &info
, sizeof(info
)))
2192 static int snd_pcm_oss_get_mapbuf(struct snd_pcm_oss_file
*pcm_oss_file
, int stream
, struct buffmem_desc __user
* _info
)
2194 // it won't be probably implemented
2195 // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n");
2199 static const char *strip_task_path(const char *path
)
2201 const char *ptr
, *ptrl
= NULL
;
2202 for (ptr
= path
; *ptr
; ptr
++) {
2209 static void snd_pcm_oss_look_for_setup(struct snd_pcm
*pcm
, int stream
,
2210 const char *task_name
,
2211 struct snd_pcm_oss_setup
*rsetup
)
2213 struct snd_pcm_oss_setup
*setup
;
2215 mutex_lock(&pcm
->streams
[stream
].oss
.setup_mutex
);
2217 for (setup
= pcm
->streams
[stream
].oss
.setup_list
; setup
;
2218 setup
= setup
->next
) {
2219 if (!strcmp(setup
->task_name
, task_name
))
2222 } while ((task_name
= strip_task_path(task_name
)) != NULL
);
2226 mutex_unlock(&pcm
->streams
[stream
].oss
.setup_mutex
);
2229 static void snd_pcm_oss_release_substream(struct snd_pcm_substream
*substream
)
2231 struct snd_pcm_runtime
*runtime
;
2232 runtime
= substream
->runtime
;
2233 vfree(runtime
->oss
.buffer
);
2234 runtime
->oss
.buffer
= NULL
;
2235 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
2236 snd_pcm_oss_plugin_clear(substream
);
2238 substream
->oss
.oss
= 0;
2241 static void snd_pcm_oss_init_substream(struct snd_pcm_substream
*substream
,
2242 struct snd_pcm_oss_setup
*setup
,
2245 struct snd_pcm_runtime
*runtime
;
2247 substream
->oss
.oss
= 1;
2248 substream
->oss
.setup
= *setup
;
2249 if (setup
->nonblock
)
2250 substream
->f_flags
|= O_NONBLOCK
;
2251 else if (setup
->block
)
2252 substream
->f_flags
&= ~O_NONBLOCK
;
2253 runtime
= substream
->runtime
;
2254 runtime
->oss
.params
= 1;
2255 runtime
->oss
.trigger
= 1;
2256 runtime
->oss
.rate
= 8000;
2257 mutex_init(&runtime
->oss
.params_lock
);
2258 switch (SNDRV_MINOR_OSS_DEVICE(minor
)) {
2259 case SNDRV_MINOR_OSS_PCM_8
:
2260 runtime
->oss
.format
= AFMT_U8
;
2262 case SNDRV_MINOR_OSS_PCM_16
:
2263 runtime
->oss
.format
= AFMT_S16_LE
;
2266 runtime
->oss
.format
= AFMT_MU_LAW
;
2268 runtime
->oss
.channels
= 1;
2269 runtime
->oss
.fragshift
= 0;
2270 runtime
->oss
.maxfrags
= 0;
2271 runtime
->oss
.subdivision
= 0;
2272 substream
->pcm_release
= snd_pcm_oss_release_substream
;
2275 static int snd_pcm_oss_release_file(struct snd_pcm_oss_file
*pcm_oss_file
)
2280 for (cidx
= 0; cidx
< 2; ++cidx
) {
2281 struct snd_pcm_substream
*substream
= pcm_oss_file
->streams
[cidx
];
2283 snd_pcm_release_substream(substream
);
2285 kfree(pcm_oss_file
);
2289 static int snd_pcm_oss_open_file(struct file
*file
,
2290 struct snd_pcm
*pcm
,
2291 struct snd_pcm_oss_file
**rpcm_oss_file
,
2293 struct snd_pcm_oss_setup
*setup
)
2296 struct snd_pcm_oss_file
*pcm_oss_file
;
2297 struct snd_pcm_substream
*substream
;
2298 fmode_t f_mode
= file
->f_mode
;
2301 *rpcm_oss_file
= NULL
;
2303 pcm_oss_file
= kzalloc(sizeof(*pcm_oss_file
), GFP_KERNEL
);
2304 if (pcm_oss_file
== NULL
)
2307 if ((f_mode
& (FMODE_WRITE
|FMODE_READ
)) == (FMODE_WRITE
|FMODE_READ
) &&
2308 (pcm
->info_flags
& SNDRV_PCM_INFO_HALF_DUPLEX
))
2309 f_mode
= FMODE_WRITE
;
2311 file
->f_flags
&= ~O_APPEND
;
2312 for (idx
= 0; idx
< 2; idx
++) {
2313 if (setup
[idx
].disable
)
2315 if (! pcm
->streams
[idx
].substream_count
)
2316 continue; /* no matching substream */
2317 if (idx
== SNDRV_PCM_STREAM_PLAYBACK
) {
2318 if (! (f_mode
& FMODE_WRITE
))
2321 if (! (f_mode
& FMODE_READ
))
2324 err
= snd_pcm_open_substream(pcm
, idx
, file
, &substream
);
2326 snd_pcm_oss_release_file(pcm_oss_file
);
2330 pcm_oss_file
->streams
[idx
] = substream
;
2331 substream
->file
= pcm_oss_file
;
2332 snd_pcm_oss_init_substream(substream
, &setup
[idx
], minor
);
2335 if (!pcm_oss_file
->streams
[0] && !pcm_oss_file
->streams
[1]) {
2336 snd_pcm_oss_release_file(pcm_oss_file
);
2340 file
->private_data
= pcm_oss_file
;
2342 *rpcm_oss_file
= pcm_oss_file
;
2347 static int snd_task_name(struct task_struct
*task
, char *name
, size_t size
)
2351 if (snd_BUG_ON(!task
|| !name
|| size
< 2))
2353 for (idx
= 0; idx
< sizeof(task
->comm
) && idx
+ 1 < size
; idx
++)
2354 name
[idx
] = task
->comm
[idx
];
2359 static int snd_pcm_oss_open(struct inode
*inode
, struct file
*file
)
2363 struct snd_pcm
*pcm
;
2364 struct snd_pcm_oss_file
*pcm_oss_file
;
2365 struct snd_pcm_oss_setup setup
[2];
2369 pcm
= snd_lookup_oss_minor_data(iminor(inode
),
2370 SNDRV_OSS_DEVICE_TYPE_PCM
);
2375 err
= snd_card_file_add(pcm
->card
, file
);
2378 if (!try_module_get(pcm
->card
->module
)) {
2382 if (snd_task_name(current
, task_name
, sizeof(task_name
)) < 0) {
2386 memset(setup
, 0, sizeof(setup
));
2387 if (file
->f_mode
& FMODE_WRITE
)
2388 snd_pcm_oss_look_for_setup(pcm
, SNDRV_PCM_STREAM_PLAYBACK
,
2389 task_name
, &setup
[0]);
2390 if (file
->f_mode
& FMODE_READ
)
2391 snd_pcm_oss_look_for_setup(pcm
, SNDRV_PCM_STREAM_CAPTURE
,
2392 task_name
, &setup
[1]);
2394 nonblock
= !!(file
->f_flags
& O_NONBLOCK
);
2396 nonblock
= nonblock_open
;
2398 init_waitqueue_entry(&wait
, current
);
2399 add_wait_queue(&pcm
->open_wait
, &wait
);
2400 mutex_lock(&pcm
->open_mutex
);
2402 err
= snd_pcm_oss_open_file(file
, pcm
, &pcm_oss_file
,
2403 iminor(inode
), setup
);
2406 if (err
== -EAGAIN
) {
2413 set_current_state(TASK_INTERRUPTIBLE
);
2414 mutex_unlock(&pcm
->open_mutex
);
2416 mutex_lock(&pcm
->open_mutex
);
2417 if (signal_pending(current
)) {
2422 remove_wait_queue(&pcm
->open_wait
, &wait
);
2423 mutex_unlock(&pcm
->open_mutex
);
2429 module_put(pcm
->card
->module
);
2431 snd_card_file_remove(pcm
->card
, file
);
2436 static int snd_pcm_oss_release(struct inode
*inode
, struct file
*file
)
2438 struct snd_pcm
*pcm
;
2439 struct snd_pcm_substream
*substream
;
2440 struct snd_pcm_oss_file
*pcm_oss_file
;
2442 pcm_oss_file
= file
->private_data
;
2443 substream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_PLAYBACK
];
2444 if (substream
== NULL
)
2445 substream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_CAPTURE
];
2446 if (snd_BUG_ON(!substream
))
2448 pcm
= substream
->pcm
;
2449 if (!pcm
->card
->shutdown
)
2450 snd_pcm_oss_sync(pcm_oss_file
);
2451 mutex_lock(&pcm
->open_mutex
);
2452 snd_pcm_oss_release_file(pcm_oss_file
);
2453 mutex_unlock(&pcm
->open_mutex
);
2454 wake_up(&pcm
->open_wait
);
2455 module_put(pcm
->card
->module
);
2456 snd_card_file_remove(pcm
->card
, file
);
2460 static long snd_pcm_oss_ioctl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
2462 struct snd_pcm_oss_file
*pcm_oss_file
;
2463 int __user
*p
= (int __user
*)arg
;
2466 pcm_oss_file
= file
->private_data
;
2467 if (cmd
== OSS_GETVERSION
)
2468 return put_user(SNDRV_OSS_VERSION
, p
);
2469 if (cmd
== OSS_ALSAEMULVER
)
2470 return put_user(1, p
);
2471 #if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE))
2472 if (((cmd
>> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */
2473 struct snd_pcm_substream
*substream
;
2475 for (idx
= 0; idx
< 2; ++idx
) {
2476 substream
= pcm_oss_file
->streams
[idx
];
2477 if (substream
!= NULL
)
2480 if (snd_BUG_ON(idx
>= 2))
2482 return snd_mixer_oss_ioctl_card(substream
->pcm
->card
, cmd
, arg
);
2485 if (((cmd
>> 8) & 0xff) != 'P')
2488 printk(KERN_DEBUG
"pcm_oss: ioctl = 0x%x\n", cmd
);
2491 case SNDCTL_DSP_RESET
:
2492 return snd_pcm_oss_reset(pcm_oss_file
);
2493 case SNDCTL_DSP_SYNC
:
2494 return snd_pcm_oss_sync(pcm_oss_file
);
2495 case SNDCTL_DSP_SPEED
:
2496 if (get_user(res
, p
))
2498 if ((res
= snd_pcm_oss_set_rate(pcm_oss_file
, res
))<0)
2500 return put_user(res
, p
);
2501 case SOUND_PCM_READ_RATE
:
2502 res
= snd_pcm_oss_get_rate(pcm_oss_file
);
2505 return put_user(res
, p
);
2506 case SNDCTL_DSP_STEREO
:
2507 if (get_user(res
, p
))
2509 res
= res
> 0 ? 2 : 1;
2510 if ((res
= snd_pcm_oss_set_channels(pcm_oss_file
, res
)) < 0)
2512 return put_user(--res
, p
);
2513 case SNDCTL_DSP_GETBLKSIZE
:
2514 res
= snd_pcm_oss_get_block_size(pcm_oss_file
);
2517 return put_user(res
, p
);
2518 case SNDCTL_DSP_SETFMT
:
2519 if (get_user(res
, p
))
2521 res
= snd_pcm_oss_set_format(pcm_oss_file
, res
);
2524 return put_user(res
, p
);
2525 case SOUND_PCM_READ_BITS
:
2526 res
= snd_pcm_oss_get_format(pcm_oss_file
);
2529 return put_user(res
, p
);
2530 case SNDCTL_DSP_CHANNELS
:
2531 if (get_user(res
, p
))
2533 res
= snd_pcm_oss_set_channels(pcm_oss_file
, res
);
2536 return put_user(res
, p
);
2537 case SOUND_PCM_READ_CHANNELS
:
2538 res
= snd_pcm_oss_get_channels(pcm_oss_file
);
2541 return put_user(res
, p
);
2542 case SOUND_PCM_WRITE_FILTER
:
2543 case SOUND_PCM_READ_FILTER
:
2545 case SNDCTL_DSP_POST
:
2546 return snd_pcm_oss_post(pcm_oss_file
);
2547 case SNDCTL_DSP_SUBDIVIDE
:
2548 if (get_user(res
, p
))
2550 res
= snd_pcm_oss_set_subdivide(pcm_oss_file
, res
);
2553 return put_user(res
, p
);
2554 case SNDCTL_DSP_SETFRAGMENT
:
2555 if (get_user(res
, p
))
2557 return snd_pcm_oss_set_fragment(pcm_oss_file
, res
);
2558 case SNDCTL_DSP_GETFMTS
:
2559 res
= snd_pcm_oss_get_formats(pcm_oss_file
);
2562 return put_user(res
, p
);
2563 case SNDCTL_DSP_GETOSPACE
:
2564 case SNDCTL_DSP_GETISPACE
:
2565 return snd_pcm_oss_get_space(pcm_oss_file
,
2566 cmd
== SNDCTL_DSP_GETISPACE
?
2567 SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
,
2568 (struct audio_buf_info __user
*) arg
);
2569 case SNDCTL_DSP_NONBLOCK
:
2570 return snd_pcm_oss_nonblock(file
);
2571 case SNDCTL_DSP_GETCAPS
:
2572 res
= snd_pcm_oss_get_caps(pcm_oss_file
);
2575 return put_user(res
, p
);
2576 case SNDCTL_DSP_GETTRIGGER
:
2577 res
= snd_pcm_oss_get_trigger(pcm_oss_file
);
2580 return put_user(res
, p
);
2581 case SNDCTL_DSP_SETTRIGGER
:
2582 if (get_user(res
, p
))
2584 return snd_pcm_oss_set_trigger(pcm_oss_file
, res
);
2585 case SNDCTL_DSP_GETIPTR
:
2586 case SNDCTL_DSP_GETOPTR
:
2587 return snd_pcm_oss_get_ptr(pcm_oss_file
,
2588 cmd
== SNDCTL_DSP_GETIPTR
?
2589 SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
,
2590 (struct count_info __user
*) arg
);
2591 case SNDCTL_DSP_MAPINBUF
:
2592 case SNDCTL_DSP_MAPOUTBUF
:
2593 return snd_pcm_oss_get_mapbuf(pcm_oss_file
,
2594 cmd
== SNDCTL_DSP_MAPINBUF
?
2595 SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
,
2596 (struct buffmem_desc __user
*) arg
);
2597 case SNDCTL_DSP_SETSYNCRO
:
2598 /* stop DMA now.. */
2600 case SNDCTL_DSP_SETDUPLEX
:
2601 if (snd_pcm_oss_get_caps(pcm_oss_file
) & DSP_CAP_DUPLEX
)
2604 case SNDCTL_DSP_GETODELAY
:
2605 res
= snd_pcm_oss_get_odelay(pcm_oss_file
);
2607 /* it's for sure, some broken apps don't check for error codes */
2611 return put_user(res
, p
);
2612 case SNDCTL_DSP_PROFILE
:
2613 return 0; /* silently ignore */
2615 snd_printd("pcm_oss: unknown command = 0x%x\n", cmd
);
2620 #ifdef CONFIG_COMPAT
2621 /* all compatible */
2622 #define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl
2624 #define snd_pcm_oss_ioctl_compat NULL
2627 static ssize_t
snd_pcm_oss_read(struct file
*file
, char __user
*buf
, size_t count
, loff_t
*offset
)
2629 struct snd_pcm_oss_file
*pcm_oss_file
;
2630 struct snd_pcm_substream
*substream
;
2632 pcm_oss_file
= file
->private_data
;
2633 substream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_CAPTURE
];
2634 if (substream
== NULL
)
2636 substream
->f_flags
= file
->f_flags
& O_NONBLOCK
;
2638 return snd_pcm_oss_read1(substream
, buf
, count
);
2641 ssize_t res
= snd_pcm_oss_read1(substream
, buf
, count
);
2642 printk(KERN_DEBUG
"pcm_oss: read %li bytes "
2643 "(returned %li bytes)\n", (long)count
, (long)res
);
2649 static ssize_t
snd_pcm_oss_write(struct file
*file
, const char __user
*buf
, size_t count
, loff_t
*offset
)
2651 struct snd_pcm_oss_file
*pcm_oss_file
;
2652 struct snd_pcm_substream
*substream
;
2655 pcm_oss_file
= file
->private_data
;
2656 substream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_PLAYBACK
];
2657 if (substream
== NULL
)
2659 substream
->f_flags
= file
->f_flags
& O_NONBLOCK
;
2660 result
= snd_pcm_oss_write1(substream
, buf
, count
);
2662 printk(KERN_DEBUG
"pcm_oss: write %li bytes (wrote %li bytes)\n",
2663 (long)count
, (long)result
);
2668 static int snd_pcm_oss_playback_ready(struct snd_pcm_substream
*substream
)
2670 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
2671 if (atomic_read(&substream
->mmap_count
))
2672 return runtime
->oss
.prev_hw_ptr_interrupt
!= runtime
->hw_ptr_interrupt
;
2674 return snd_pcm_playback_avail(runtime
) >= runtime
->oss
.period_frames
;
2677 static int snd_pcm_oss_capture_ready(struct snd_pcm_substream
*substream
)
2679 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
2680 if (atomic_read(&substream
->mmap_count
))
2681 return runtime
->oss
.prev_hw_ptr_interrupt
!= runtime
->hw_ptr_interrupt
;
2683 return snd_pcm_capture_avail(runtime
) >= runtime
->oss
.period_frames
;
2686 static unsigned int snd_pcm_oss_poll(struct file
*file
, poll_table
* wait
)
2688 struct snd_pcm_oss_file
*pcm_oss_file
;
2690 struct snd_pcm_substream
*psubstream
= NULL
, *csubstream
= NULL
;
2692 pcm_oss_file
= file
->private_data
;
2694 psubstream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_PLAYBACK
];
2695 csubstream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_CAPTURE
];
2698 if (psubstream
!= NULL
) {
2699 struct snd_pcm_runtime
*runtime
= psubstream
->runtime
;
2700 poll_wait(file
, &runtime
->sleep
, wait
);
2701 snd_pcm_stream_lock_irq(psubstream
);
2702 if (runtime
->status
->state
!= SNDRV_PCM_STATE_DRAINING
&&
2703 (runtime
->status
->state
!= SNDRV_PCM_STATE_RUNNING
||
2704 snd_pcm_oss_playback_ready(psubstream
)))
2705 mask
|= POLLOUT
| POLLWRNORM
;
2706 snd_pcm_stream_unlock_irq(psubstream
);
2708 if (csubstream
!= NULL
) {
2709 struct snd_pcm_runtime
*runtime
= csubstream
->runtime
;
2710 snd_pcm_state_t ostate
;
2711 poll_wait(file
, &runtime
->sleep
, wait
);
2712 snd_pcm_stream_lock_irq(csubstream
);
2713 if ((ostate
= runtime
->status
->state
) != SNDRV_PCM_STATE_RUNNING
||
2714 snd_pcm_oss_capture_ready(csubstream
))
2715 mask
|= POLLIN
| POLLRDNORM
;
2716 snd_pcm_stream_unlock_irq(csubstream
);
2717 if (ostate
!= SNDRV_PCM_STATE_RUNNING
&& runtime
->oss
.trigger
) {
2718 struct snd_pcm_oss_file ofile
;
2719 memset(&ofile
, 0, sizeof(ofile
));
2720 ofile
.streams
[SNDRV_PCM_STREAM_CAPTURE
] = pcm_oss_file
->streams
[SNDRV_PCM_STREAM_CAPTURE
];
2721 runtime
->oss
.trigger
= 0;
2722 snd_pcm_oss_set_trigger(&ofile
, PCM_ENABLE_INPUT
);
2729 static int snd_pcm_oss_mmap(struct file
*file
, struct vm_area_struct
*area
)
2731 struct snd_pcm_oss_file
*pcm_oss_file
;
2732 struct snd_pcm_substream
*substream
= NULL
;
2733 struct snd_pcm_runtime
*runtime
;
2737 printk(KERN_DEBUG
"pcm_oss: mmap begin\n");
2739 pcm_oss_file
= file
->private_data
;
2740 switch ((area
->vm_flags
& (VM_READ
| VM_WRITE
))) {
2741 case VM_READ
| VM_WRITE
:
2742 substream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_PLAYBACK
];
2747 substream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_CAPTURE
];
2750 substream
= pcm_oss_file
->streams
[SNDRV_PCM_STREAM_PLAYBACK
];
2755 /* set VM_READ access as well to fix memset() routines that do
2756 reads before writes (to improve performance) */
2757 area
->vm_flags
|= VM_READ
;
2758 if (substream
== NULL
)
2760 runtime
= substream
->runtime
;
2761 if (!(runtime
->info
& SNDRV_PCM_INFO_MMAP_VALID
))
2763 if (runtime
->info
& SNDRV_PCM_INFO_INTERLEAVED
)
2764 runtime
->access
= SNDRV_PCM_ACCESS_MMAP_INTERLEAVED
;
2768 if (runtime
->oss
.params
) {
2769 if ((err
= snd_pcm_oss_change_params(substream
)) < 0)
2772 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
2773 if (runtime
->oss
.plugin_first
!= NULL
)
2777 if (area
->vm_pgoff
!= 0)
2780 err
= snd_pcm_mmap_data(substream
, file
, area
);
2783 runtime
->oss
.mmap_bytes
= area
->vm_end
- area
->vm_start
;
2784 runtime
->silence_threshold
= 0;
2785 runtime
->silence_size
= 0;
2787 printk(KERN_DEBUG
"pcm_oss: mmap ok, bytes = 0x%x\n",
2788 runtime
->oss
.mmap_bytes
);
2790 /* In mmap mode we never stop */
2791 runtime
->stop_threshold
= runtime
->boundary
;
2796 #ifdef CONFIG_SND_VERBOSE_PROCFS
2801 static void snd_pcm_oss_proc_read(struct snd_info_entry
*entry
,
2802 struct snd_info_buffer
*buffer
)
2804 struct snd_pcm_str
*pstr
= entry
->private_data
;
2805 struct snd_pcm_oss_setup
*setup
= pstr
->oss
.setup_list
;
2806 mutex_lock(&pstr
->oss
.setup_mutex
);
2808 snd_iprintf(buffer
, "%s %u %u%s%s%s%s%s%s\n",
2812 setup
->disable
? " disable" : "",
2813 setup
->direct
? " direct" : "",
2814 setup
->block
? " block" : "",
2815 setup
->nonblock
? " non-block" : "",
2816 setup
->partialfrag
? " partial-frag" : "",
2817 setup
->nosilence
? " no-silence" : "");
2818 setup
= setup
->next
;
2820 mutex_unlock(&pstr
->oss
.setup_mutex
);
2823 static void snd_pcm_oss_proc_free_setup_list(struct snd_pcm_str
* pstr
)
2825 struct snd_pcm_oss_setup
*setup
, *setupn
;
2827 for (setup
= pstr
->oss
.setup_list
, pstr
->oss
.setup_list
= NULL
;
2828 setup
; setup
= setupn
) {
2829 setupn
= setup
->next
;
2830 kfree(setup
->task_name
);
2833 pstr
->oss
.setup_list
= NULL
;
2836 static void snd_pcm_oss_proc_write(struct snd_info_entry
*entry
,
2837 struct snd_info_buffer
*buffer
)
2839 struct snd_pcm_str
*pstr
= entry
->private_data
;
2840 char line
[128], str
[32], task_name
[32], *ptr
;
2842 struct snd_pcm_oss_setup
*setup
, *setup1
, template;
2844 while (!snd_info_get_line(buffer
, line
, sizeof(line
))) {
2845 mutex_lock(&pstr
->oss
.setup_mutex
);
2846 memset(&template, 0, sizeof(template));
2847 ptr
= snd_info_get_str(task_name
, line
, sizeof(task_name
));
2848 if (!strcmp(task_name
, "clear") || !strcmp(task_name
, "erase")) {
2849 snd_pcm_oss_proc_free_setup_list(pstr
);
2850 mutex_unlock(&pstr
->oss
.setup_mutex
);
2853 for (setup
= pstr
->oss
.setup_list
; setup
; setup
= setup
->next
) {
2854 if (!strcmp(setup
->task_name
, task_name
)) {
2859 ptr
= snd_info_get_str(str
, ptr
, sizeof(str
));
2860 template.periods
= simple_strtoul(str
, NULL
, 10);
2861 ptr
= snd_info_get_str(str
, ptr
, sizeof(str
));
2862 template.period_size
= simple_strtoul(str
, NULL
, 10);
2863 for (idx1
= 31; idx1
>= 0; idx1
--)
2864 if (template.period_size
& (1 << idx1
))
2866 for (idx1
--; idx1
>= 0; idx1
--)
2867 template.period_size
&= ~(1 << idx1
);
2869 ptr
= snd_info_get_str(str
, ptr
, sizeof(str
));
2870 if (!strcmp(str
, "disable")) {
2871 template.disable
= 1;
2872 } else if (!strcmp(str
, "direct")) {
2873 template.direct
= 1;
2874 } else if (!strcmp(str
, "block")) {
2876 } else if (!strcmp(str
, "non-block")) {
2877 template.nonblock
= 1;
2878 } else if (!strcmp(str
, "partial-frag")) {
2879 template.partialfrag
= 1;
2880 } else if (!strcmp(str
, "no-silence")) {
2881 template.nosilence
= 1;
2882 } else if (!strcmp(str
, "buggy-ptr")) {
2883 template.buggyptr
= 1;
2886 if (setup
== NULL
) {
2887 setup
= kmalloc(sizeof(*setup
), GFP_KERNEL
);
2889 buffer
->error
= -ENOMEM
;
2890 mutex_unlock(&pstr
->oss
.setup_mutex
);
2893 if (pstr
->oss
.setup_list
== NULL
)
2894 pstr
->oss
.setup_list
= setup
;
2896 for (setup1
= pstr
->oss
.setup_list
;
2897 setup1
->next
; setup1
= setup1
->next
);
2898 setup1
->next
= setup
;
2900 template.task_name
= kstrdup(task_name
, GFP_KERNEL
);
2901 if (! template.task_name
) {
2903 buffer
->error
= -ENOMEM
;
2904 mutex_unlock(&pstr
->oss
.setup_mutex
);
2909 mutex_unlock(&pstr
->oss
.setup_mutex
);
2913 static void snd_pcm_oss_proc_init(struct snd_pcm
*pcm
)
2916 for (stream
= 0; stream
< 2; ++stream
) {
2917 struct snd_info_entry
*entry
;
2918 struct snd_pcm_str
*pstr
= &pcm
->streams
[stream
];
2919 if (pstr
->substream_count
== 0)
2921 if ((entry
= snd_info_create_card_entry(pcm
->card
, "oss", pstr
->proc_root
)) != NULL
) {
2922 entry
->content
= SNDRV_INFO_CONTENT_TEXT
;
2923 entry
->mode
= S_IFREG
| S_IRUGO
| S_IWUSR
;
2924 entry
->c
.text
.read
= snd_pcm_oss_proc_read
;
2925 entry
->c
.text
.write
= snd_pcm_oss_proc_write
;
2926 entry
->private_data
= pstr
;
2927 if (snd_info_register(entry
) < 0) {
2928 snd_info_free_entry(entry
);
2932 pstr
->oss
.proc_entry
= entry
;
2936 static void snd_pcm_oss_proc_done(struct snd_pcm
*pcm
)
2939 for (stream
= 0; stream
< 2; ++stream
) {
2940 struct snd_pcm_str
*pstr
= &pcm
->streams
[stream
];
2941 snd_info_free_entry(pstr
->oss
.proc_entry
);
2942 pstr
->oss
.proc_entry
= NULL
;
2943 snd_pcm_oss_proc_free_setup_list(pstr
);
2946 #else /* !CONFIG_SND_VERBOSE_PROCFS */
2947 #define snd_pcm_oss_proc_init(pcm)
2948 #define snd_pcm_oss_proc_done(pcm)
2949 #endif /* CONFIG_SND_VERBOSE_PROCFS */
2955 static const struct file_operations snd_pcm_oss_f_reg
=
2957 .owner
= THIS_MODULE
,
2958 .read
= snd_pcm_oss_read
,
2959 .write
= snd_pcm_oss_write
,
2960 .open
= snd_pcm_oss_open
,
2961 .release
= snd_pcm_oss_release
,
2962 .poll
= snd_pcm_oss_poll
,
2963 .unlocked_ioctl
= snd_pcm_oss_ioctl
,
2964 .compat_ioctl
= snd_pcm_oss_ioctl_compat
,
2965 .mmap
= snd_pcm_oss_mmap
,
2968 static void register_oss_dsp(struct snd_pcm
*pcm
, int index
)
2971 sprintf(name
, "dsp%i%i", pcm
->card
->number
, pcm
->device
);
2972 if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM
,
2973 pcm
->card
, index
, &snd_pcm_oss_f_reg
,
2975 snd_printk(KERN_ERR
"unable to register OSS PCM device %i:%i\n",
2976 pcm
->card
->number
, pcm
->device
);
2980 static int snd_pcm_oss_register_minor(struct snd_pcm
*pcm
)
2983 if (dsp_map
[pcm
->card
->number
] == (int)pcm
->device
) {
2986 register_oss_dsp(pcm
, 0);
2987 duplex
= (pcm
->streams
[SNDRV_PCM_STREAM_PLAYBACK
].substream_count
> 0 &&
2988 pcm
->streams
[SNDRV_PCM_STREAM_CAPTURE
].substream_count
&&
2989 !(pcm
->info_flags
& SNDRV_PCM_INFO_HALF_DUPLEX
));
2990 sprintf(name
, "%s%s", pcm
->name
, duplex
? " (DUPLEX)" : "");
2991 #ifdef SNDRV_OSS_INFO_DEV_AUDIO
2992 snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO
,
2997 pcm
->oss
.reg_mask
|= 1;
2999 if (adsp_map
[pcm
->card
->number
] == (int)pcm
->device
) {
3000 register_oss_dsp(pcm
, 1);
3002 pcm
->oss
.reg_mask
|= 2;
3006 snd_pcm_oss_proc_init(pcm
);
3011 static int snd_pcm_oss_disconnect_minor(struct snd_pcm
*pcm
)
3014 if (pcm
->oss
.reg_mask
& 1) {
3015 pcm
->oss
.reg_mask
&= ~1;
3016 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM
,
3019 if (pcm
->oss
.reg_mask
& 2) {
3020 pcm
->oss
.reg_mask
&= ~2;
3021 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM
,
3024 if (dsp_map
[pcm
->card
->number
] == (int)pcm
->device
) {
3025 #ifdef SNDRV_OSS_INFO_DEV_AUDIO
3026 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO
, pcm
->card
->number
);
3034 static int snd_pcm_oss_unregister_minor(struct snd_pcm
*pcm
)
3036 snd_pcm_oss_disconnect_minor(pcm
);
3037 snd_pcm_oss_proc_done(pcm
);
3041 static struct snd_pcm_notify snd_pcm_oss_notify
=
3043 .n_register
= snd_pcm_oss_register_minor
,
3044 .n_disconnect
= snd_pcm_oss_disconnect_minor
,
3045 .n_unregister
= snd_pcm_oss_unregister_minor
,
3048 static int __init
alsa_pcm_oss_init(void)
3053 /* check device map table */
3054 for (i
= 0; i
< SNDRV_CARDS
; i
++) {
3055 if (dsp_map
[i
] < 0 || dsp_map
[i
] >= SNDRV_PCM_DEVICES
) {
3056 snd_printk(KERN_ERR
"invalid dsp_map[%d] = %d\n",
3060 if (adsp_map
[i
] < 0 || adsp_map
[i
] >= SNDRV_PCM_DEVICES
) {
3061 snd_printk(KERN_ERR
"invalid adsp_map[%d] = %d\n",
3066 if ((err
= snd_pcm_notify(&snd_pcm_oss_notify
, 0)) < 0)
3071 static void __exit
alsa_pcm_oss_exit(void)
3073 snd_pcm_notify(&snd_pcm_oss_notify
, 1);
3076 module_init(alsa_pcm_oss_init
)
3077 module_exit(alsa_pcm_oss_exit
)