Home Home > GIT Browse
summaryrefslogtreecommitdiff
blob: b957763c32bb7d62bc378d0a49f712e1529c89b8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
/*
 *  Advanced Linux Sound Architecture - ALSA - Driver
 *  Copyright (c) 1994-2003 by Jaroslav Kysela <perex@suse.cz>,
 *                             Abramo Bagnara <abramo@alsa-project.org>
 *
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#ifndef __SOUND_ASOUND_H
#define __SOUND_ASOUND_H

#if defined(LINUX) || defined(__LINUX__) || defined(__linux__)

#include <linux/ioctl.h>

#ifdef __KERNEL__

#include <linux/types.h>
#include <linux/time.h>
#include <asm/byteorder.h>

#ifdef  __LITTLE_ENDIAN
#define SNDRV_LITTLE_ENDIAN
#else
#ifdef __BIG_ENDIAN
#define SNDRV_BIG_ENDIAN
#else
#error "Unsupported endian..."
#endif
#endif

#else /* !__KERNEL__ */

#include <endian.h>
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define SNDRV_LITTLE_ENDIAN
#elif __BYTE_ORDER == __BIG_ENDIAN
#define SNDRV_BIG_ENDIAN
#else
#error "Unsupported endian..."
#endif

#endif /* __KERNEL **/

#endif /* LINUX */

#ifndef __KERNEL__
#include <sys/time.h>
#include <sys/types.h>
#endif

/*
 *  protocol version
 */

#define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
#define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
#define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
#define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
#define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
	(SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
	 (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
	   SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))

/****************************************************************************
 *                                                                          *
 *        Digital audio interface					    *
 *                                                                          *
 ****************************************************************************/

struct sndrv_aes_iec958 {
	unsigned char status[24];	/* AES/IEC958 channel status bits */
	unsigned char subcode[147];	/* AES/IEC958 subcode bits */
	unsigned char pad;		/* nothing */
	unsigned char dig_subframe[4];	/* AES/IEC958 subframe bits */
};

/****************************************************************************
 *                                                                          *
 *      Section for driver hardware dependent interface - /dev/snd/hw?      *
 *                                                                          *
 ****************************************************************************/

#define SNDRV_HWDEP_VERSION		SNDRV_PROTOCOL_VERSION(1, 0, 1)

enum sndrv_hwdep_iface {
	SNDRV_HWDEP_IFACE_OPL2 = 0,
	SNDRV_HWDEP_IFACE_OPL3,
	SNDRV_HWDEP_IFACE_OPL4,
	SNDRV_HWDEP_IFACE_SB16CSP,	/* Creative Signal Processor */
	SNDRV_HWDEP_IFACE_EMU10K1,	/* FX8010 processor in EMU10K1 chip */
	SNDRV_HWDEP_IFACE_YSS225,	/* Yamaha FX processor */
	SNDRV_HWDEP_IFACE_ICS2115,	/* Wavetable synth */
	SNDRV_HWDEP_IFACE_SSCAPE,	/* Ensoniq SoundScape ISA card (MC68EC000) */
	SNDRV_HWDEP_IFACE_VX,		/* Digigram VX cards */
	SNDRV_HWDEP_IFACE_MIXART,	/* Digigram miXart cards */
	SNDRV_HWDEP_IFACE_USX2Y,	/* Tascam US122, US224 & US428 usb */
	SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */	
	SNDRV_HWDEP_IFACE_BLUETOOTH,	/* Bluetooth audio */
	SNDRV_HWDEP_IFACE_USX2Y_PCM,	/* Tascam US122, US224 & US428 rawusb pcm */
	SNDRV_HWDEP_IFACE_PCXHR,	/* Digigram PCXHR */

	/* Don't forget to change the following: */
	SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_PCXHR
};

struct sndrv_hwdep_info {
	unsigned int device;		/* WR: device number */
	int card;			/* R: card number */
	unsigned char id[64];		/* ID (user selectable) */
	unsigned char name[80];		/* hwdep name */
	enum sndrv_hwdep_iface iface;	/* hwdep interface */
	unsigned char reserved[64];	/* reserved for future */
};

/* generic DSP loader */
struct sndrv_hwdep_dsp_status {
	unsigned int version;		/* R: driver-specific version */
	unsigned char id[32];		/* R: driver-specific ID string */
	unsigned int num_dsps;		/* R: number of DSP images to transfer */
	unsigned int dsp_loaded;	/* R: bit flags indicating the loaded DSPs */
	unsigned int chip_ready;	/* R: 1 = initialization finished */
	unsigned char reserved[16];	/* reserved for future use */
};

struct sndrv_hwdep_dsp_image {
	unsigned int index;		/* W: DSP index */
	unsigned char name[64];		/* W: ID (e.g. file name) */
	unsigned char __user *image;	/* W: binary image */
	size_t length;			/* W: size of image in bytes */
	unsigned long driver_data;	/* W: driver-specific data */
};

enum {
	SNDRV_HWDEP_IOCTL_PVERSION = _IOR ('H', 0x00, int),
	SNDRV_HWDEP_IOCTL_INFO = _IOR ('H', 0x01, struct sndrv_hwdep_info),
	SNDRV_HWDEP_IOCTL_DSP_STATUS = _IOR('H', 0x02, struct sndrv_hwdep_dsp_status),
	SNDRV_HWDEP_IOCTL_DSP_LOAD   = _IOW('H', 0x03, struct sndrv_hwdep_dsp_image)
};

/*****************************************************************************
 *                                                                           *
 *             Digital Audio (PCM) interface - /dev/snd/pcm??                *
 *                                                                           *
 *****************************************************************************/

#define SNDRV_PCM_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 7)

typedef unsigned long sndrv_pcm_uframes_t;
typedef long sndrv_pcm_sframes_t;

enum sndrv_pcm_class {
	SNDRV_PCM_CLASS_GENERIC = 0,	/* standard mono or stereo device */
	SNDRV_PCM_CLASS_MULTI,		/* multichannel device */
	SNDRV_PCM_CLASS_MODEM,		/* software modem class */
	SNDRV_PCM_CLASS_DIGITIZER,	/* digitizer class */
	/* Don't forget to change the following: */
	SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
};

enum sndrv_pcm_subclass {
	SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
	SNDRV_PCM_SUBCLASS_MULTI_MIX,	/* multichannel subdevices are mixed together */
	/* Don't forget to change the following: */
	SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
};

enum sndrv_pcm_stream {
	SNDRV_PCM_STREAM_PLAYBACK = 0,
	SNDRV_PCM_STREAM_CAPTURE,
	SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
};

enum sndrv_pcm_access {
	SNDRV_PCM_ACCESS_MMAP_INTERLEAVED = 0,	/* interleaved mmap */
	SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED, 	/* noninterleaved mmap */
	SNDRV_PCM_ACCESS_MMAP_COMPLEX,		/* complex mmap */
	SNDRV_PCM_ACCESS_RW_INTERLEAVED,	/* readi/writei */
	SNDRV_PCM_ACCESS_RW_NONINTERLEAVED,	/* readn/writen */
	SNDRV_PCM_ACCESS_LAST = SNDRV_PCM_ACCESS_RW_NONINTERLEAVED,
};

enum sndrv_pcm_format {
	SNDRV_PCM_FORMAT_S8 = 0,
	SNDRV_PCM_FORMAT_U8,
	SNDRV_PCM_FORMAT_S16_LE,
	SNDRV_PCM_FORMAT_S16_BE,
	SNDRV_PCM_FORMAT_U16_LE,
	SNDRV_PCM_FORMAT_U16_BE,
	SNDRV_PCM_FORMAT_S24_LE,	/* low three bytes */
	SNDRV_PCM_FORMAT_S24_BE,	/* low three bytes */
	SNDRV_PCM_FORMAT_U24_LE,	/* low three bytes */
	SNDRV_PCM_FORMAT_U24_BE,	/* low three bytes */
	SNDRV_PCM_FORMAT_S32_LE,
	SNDRV_PCM_FORMAT_S32_BE,
	SNDRV_PCM_FORMAT_U32_LE,
	SNDRV_PCM_FORMAT_U32_BE,
	SNDRV_PCM_FORMAT_FLOAT_LE,	/* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
	SNDRV_PCM_FORMAT_FLOAT_BE,	/* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
	SNDRV_PCM_FORMAT_FLOAT64_LE,	/* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
	SNDRV_PCM_FORMAT_FLOAT64_BE,	/* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
	SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE,	/* IEC-958 subframe, Little Endian */
	SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE,	/* IEC-958 subframe, Big Endian */
	SNDRV_PCM_FORMAT_MU_LAW,
	SNDRV_PCM_FORMAT_A_LAW,
	SNDRV_PCM_FORMAT_IMA_ADPCM,
	SNDRV_PCM_FORMAT_MPEG,
	SNDRV_PCM_FORMAT_GSM,
	SNDRV_PCM_FORMAT_SPECIAL = 31,
	SNDRV_PCM_FORMAT_S24_3LE = 32,	/* in three bytes */
	SNDRV_PCM_FORMAT_S24_3BE,	/* in three bytes */
	SNDRV_PCM_FORMAT_U24_3LE,	/* in three bytes */
	SNDRV_PCM_FORMAT_U24_3BE,	/* in three bytes */
	SNDRV_PCM_FORMAT_S20_3LE,	/* in three bytes */
	SNDRV_PCM_FORMAT_S20_3BE,	/* in three bytes */
	SNDRV_PCM_FORMAT_U20_3LE,	/* in three bytes */
	SNDRV_PCM_FORMAT_U20_3BE,	/* in three bytes */
	SNDRV_PCM_FORMAT_S18_3LE,	/* in three bytes */
	SNDRV_PCM_FORMAT_S18_3BE,	/* in three bytes */
	SNDRV_PCM_FORMAT_U18_3LE,	/* in three bytes */
	SNDRV_PCM_FORMAT_U18_3BE,	/* in three bytes */
	SNDRV_PCM_FORMAT_LAST = SNDRV_PCM_FORMAT_U18_3BE,

#ifdef SNDRV_LITTLE_ENDIAN
	SNDRV_PCM_FORMAT_S16 = SNDRV_PCM_FORMAT_S16_LE,
	SNDRV_PCM_FORMAT_U16 = SNDRV_PCM_FORMAT_U16_LE,
	SNDRV_PCM_FORMAT_S24 = SNDRV_PCM_FORMAT_S24_LE,
	SNDRV_PCM_FORMAT_U24 = SNDRV_PCM_FORMAT_U24_LE,
	SNDRV_PCM_FORMAT_S32 = SNDRV_PCM_FORMAT_S32_LE,
	SNDRV_PCM_FORMAT_U32 = SNDRV_PCM_FORMAT_U32_LE,
	SNDRV_PCM_FORMAT_FLOAT = SNDRV_PCM_FORMAT_FLOAT_LE,
	SNDRV_PCM_FORMAT_FLOAT64 = SNDRV_PCM_FORMAT_FLOAT64_LE,
	SNDRV_PCM_FORMAT_IEC958_SUBFRAME = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE,
#endif
#ifdef SNDRV_BIG_ENDIAN
	SNDRV_PCM_FORMAT_S16 = SNDRV_PCM_FORMAT_S16_BE,
	SNDRV_PCM_FORMAT_U16 = SNDRV_PCM_FORMAT_U16_BE,
	SNDRV_PCM_FORMAT_S24 = SNDRV_PCM_FORMAT_S24_BE,
	SNDRV_PCM_FORMAT_U24 = SNDRV_PCM_FORMAT_U24_BE,
	SNDRV_PCM_FORMAT_S32 = SNDRV_PCM_FORMAT_S32_BE,
	SNDRV_PCM_FORMAT_U32 = SNDRV_PCM_FORMAT_U32_BE,
	SNDRV_PCM_FORMAT_FLOAT = SNDRV_PCM_FORMAT_FLOAT_BE,
	SNDRV_PCM_FORMAT_FLOAT64 = SNDRV_PCM_FORMAT_FLOAT64_BE,
	SNDRV_PCM_FORMAT_IEC958_SUBFRAME = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE,
#endif
};

enum sndrv_pcm_subformat {
	SNDRV_PCM_SUBFORMAT_STD = 0,
	SNDRV_PCM_SUBFORMAT_LAST = SNDRV_PCM_SUBFORMAT_STD,
};

#define SNDRV_PCM_INFO_MMAP		0x00000001	/* hardware supports mmap */
#define SNDRV_PCM_INFO_MMAP_VALID	0x00000002	/* period data are valid during transfer */
#define SNDRV_PCM_INFO_DOUBLE		0x00000004	/* Double buffering needed for PCM start/stop */
#define SNDRV_PCM_INFO_BATCH		0x00000010	/* double buffering */
#define SNDRV_PCM_INFO_INTERLEAVED	0x00000100	/* channels are interleaved */
#define SNDRV_PCM_INFO_NONINTERLEAVED	0x00000200	/* channels are not interleaved */
#define SNDRV_PCM_INFO_COMPLEX		0x00000400	/* complex frame organization (mmap only) */
#define SNDRV_PCM_INFO_BLOCK_TRANSFER	0x00010000	/* hardware transfer block of samples */
#define SNDRV_PCM_INFO_OVERRANGE	0x00020000	/* hardware supports ADC (capture) overrange detection */
#define SNDRV_PCM_INFO_RESUME		0x00040000	/* hardware supports stream resume after suspend */
#define SNDRV_PCM_INFO_PAUSE		0x00080000	/* pause ioctl is supported */
#define SNDRV_PCM_INFO_HALF_DUPLEX	0x00100000	/* only half duplex */
#define SNDRV_PCM_INFO_JOINT_DUPLEX	0x00200000	/* playback and capture stream are somewhat correlated */
#define SNDRV_PCM_INFO_SYNC_START	0x00400000	/* pcm support some kind of sync go */

enum sndrv_pcm_state {
	SNDRV_PCM_STATE_OPEN = 0,	/* stream is open */
	SNDRV_PCM_STATE_SETUP,		/* stream has a setup */
	SNDRV_PCM_STATE_PREPARED,	/* stream is ready to start */
	SNDRV_PCM_STATE_RUNNING,	/* stream is running */
	SNDRV_PCM_STATE_XRUN,		/* stream reached an xrun */
	SNDRV_PCM_STATE_DRAINING,	/* stream is draining */
	SNDRV_PCM_STATE_PAUSED,		/* stream is paused */
	SNDRV_PCM_STATE_SUSPENDED,	/* hardware is suspended */
	SNDRV_PCM_STATE_DISCONNECTED,	/* hardware is disconnected */
	SNDRV_PCM_STATE_LAST = SNDRV_PCM_STATE_DISCONNECTED,
};

enum {
	SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
	SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000,
	SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
};

union sndrv_pcm_sync_id {
	unsigned char id[16];
	unsigned short id16[8];
	unsigned int id32[4];
};

struct sndrv_pcm_info {
	unsigned int device;		/* RO/WR (control): device number */
	unsigned int subdevice;		/* RO/WR (control): subdevice number */
	enum sndrv_pcm_stream stream;	/* RO/WR (control): stream number */
	int card;			/* R: card number */
	unsigned char id[64];		/* ID (user selectable) */
	unsigned char name[80];		/* name of this device */
	unsigned char subname[32];	/* subdevice name */
	enum sndrv_pcm_class dev_class;	/* SNDRV_PCM_CLASS_* */
	enum sndrv_pcm_subclass dev_subclass; /* SNDRV_PCM_SUBCLASS_* */
	unsigned int subdevices_count;
	unsigned int subdevices_avail;
	union sndrv_pcm_sync_id sync;	/* hardware synchronization ID */
	unsigned char reserved[64];	/* reserved for future... */
};

enum sndrv_pcm_hw_param {
	SNDRV_PCM_HW_PARAM_ACCESS = 0,	/* Access type */
	SNDRV_PCM_HW_PARAM_FIRST_MASK = SNDRV_PCM_HW_PARAM_ACCESS,
	SNDRV_PCM_HW_PARAM_FORMAT,	/* Format */
	SNDRV_PCM_HW_PARAM_SUBFORMAT,	/* Subformat */
	SNDRV_PCM_HW_PARAM_LAST_MASK = SNDRV_PCM_HW_PARAM_SUBFORMAT,

	SNDRV_PCM_HW_PARAM_SAMPLE_BITS = 8, /* Bits per sample */
	SNDRV_PCM_HW_PARAM_FIRST_INTERVAL = SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
	SNDRV_PCM_HW_PARAM_FRAME_BITS,	/* Bits per frame */
	SNDRV_PCM_HW_PARAM_CHANNELS,	/* Channels */
	SNDRV_PCM_HW_PARAM_RATE,	/* Approx rate */
	SNDRV_PCM_HW_PARAM_PERIOD_TIME,	/* Approx distance between interrupts
					   in us */
	SNDRV_PCM_HW_PARAM_PERIOD_SIZE,	/* Approx frames between interrupts */
	SNDRV_PCM_HW_PARAM_PERIOD_BYTES, /* Approx bytes between interrupts */
	SNDRV_PCM_HW_PARAM_PERIODS,	/* Approx interrupts per buffer */
	SNDRV_PCM_HW_PARAM_BUFFER_TIME,	/* Approx duration of buffer in us */
	SNDRV_PCM_HW_PARAM_BUFFER_SIZE,	/* Size of buffer in frames */
	SNDRV_PCM_HW_PARAM_BUFFER_BYTES, /* Size of buffer in bytes */
	SNDRV_PCM_HW_PARAM_TICK_TIME,	/* Approx tick duration in us */
	SNDRV_PCM_HW_PARAM_LAST_INTERVAL = SNDRV_PCM_HW_PARAM_TICK_TIME
};

#define SNDRV_PCM_HW_PARAMS_RUNTIME		(1<<0)

struct sndrv_interval {
	unsigned int min, max;
	unsigned int openmin:1,
		     openmax:1,
		     integer:1,
		     empty:1;
};

#define SNDRV_MASK_MAX	256

struct sndrv_mask {
	u_int32_t bits[(SNDRV_MASK_MAX+31)/32];
};

struct sndrv_pcm_hw_params {
	unsigned int flags;
	struct sndrv_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - 
			       SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
	struct sndrv_mask mres[5];	/* reserved masks */
	struct sndrv_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
				        SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
	struct sndrv_interval ires[9];	/* reserved intervals */
	unsigned int rmask;		/* W: requested masks */
	unsigned int cmask;		/* R: changed masks */
	unsigned int info;		/* R: Info flags for returned setup */
	unsigned int msbits;		/* R: used most significant bits */
	unsigned int rate_num;		/* R: rate numerator */
	unsigned int rate_den;		/* R: rate denominator */
	sndrv_pcm_uframes_t fifo_size;	/* R: chip FIFO size in frames */
	unsigned char reserved[64];	/* reserved for future */
};

enum sndrv_pcm_tstamp {
	SNDRV_PCM_TSTAMP_NONE = 0,
	SNDRV_PCM_TSTAMP_MMAP,
	SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_MMAP,
};

struct sndrv_pcm_sw_params {
	enum sndrv_pcm_tstamp tstamp_mode;	/* timestamp mode */
	unsigned int period_step;
	unsigned int sleep_min;			/* min ticks to sleep */
	sndrv_pcm_uframes_t avail_min;		/* min avail frames for wakeup */
	sndrv_pcm_uframes_t xfer_align;		/* xfer size need to be a multiple */
	sndrv_pcm_uframes_t start_threshold;	/* min hw_avail frames for automatic start */
	sndrv_pcm_uframes_t stop_threshold;	/* min avail frames for automatic stop */
	sndrv_pcm_uframes_t silence_threshold;	/* min distance from noise for silence filling */
	sndrv_pcm_uframes_t silence_size;	/* silence block size */
	sndrv_pcm_uframes_t boundary;		/* pointers wrap point */
	unsigned char reserved[64];		/* reserved for future */
};

struct sndrv_pcm_channel_info {
	unsigned int channel;
	off_t offset;			/* mmap offset */
	unsigned int first;		/* offset to first sample in bits */
	unsigned int step;		/* samples distance in bits */
};

struct sndrv_pcm_status {
	enum sndrv_pcm_state state;	/* stream state */
	struct timespec trigger_tstamp;	/* time when stream was started/stopped/paused */
	struct timespec tstamp;		/* reference timestamp */
	sndrv_pcm_uframes_t appl_ptr;	/* appl ptr */
	sndrv_pcm_uframes_t hw_ptr;	/* hw ptr */
	sndrv_pcm_sframes_t delay;	/* current delay in frames */
	sndrv_pcm_uframes_t avail;	/* number of frames available */
	sndrv_pcm_uframes_t avail_max;	/* max frames available on hw since last status */
	sndrv_pcm_uframes_t overrange;	/* count of ADC (capture) overrange detections from last status */
	enum sndrv_pcm_state suspended_state; /* suspended stream state */
	unsigned char reserved[60];	/* must be filled with zero */
};

struct sndrv_pcm_mmap_status {
	enum sndrv_pcm_state state;	/* RO: state - SNDRV_PCM_STATE_XXXX */
	int pad1;			/* Needed for 64 bit alignment */
	sndrv_pcm_uframes_t hw_ptr;	/* RO: hw ptr (0...boundary-1) */
	struct timespec tstamp;		/* Timestamp */
	enum sndrv_pcm_state suspended_state; /* RO: suspended stream state */
};

struct sndrv_pcm_mmap_control {
	sndrv_pcm_uframes_t appl_ptr;	/* RW: appl ptr (0...boundary-1) */
	sndrv_pcm_uframes_t avail_min;	/* RW: min available frames for wakeup */
};

#define SNDRV_PCM_SYNC_PTR_HWSYNC	(1<<0)	/* execute hwsync */
#define SNDRV_PCM_SYNC_PTR_APPL		(1<<1)	/* get appl_ptr from driver (r/w op) */
#define SNDRV_PCM_SYNC_PTR_AVAIL_MIN	(1<<2)	/* get avail_min from driver */

struct sndrv_pcm_sync_ptr {
	unsigned int flags;
	union {
		struct sndrv_pcm_mmap_status status;
		unsigned char reserved[64];
	} s;
	union {
		struct sndrv_pcm_mmap_control control;
		unsigned char reserved[64];
	} c;
};

struct sndrv_xferi {
	sndrv_pcm_sframes_t result;
	void __user *buf;
	sndrv_pcm_uframes_t frames;
};

struct sndrv_xfern {
	sndrv_pcm_sframes_t result;
	void __user * __user *bufs;
	sndrv_pcm_uframes_t frames;
};

enum {
	SNDRV_PCM_IOCTL_PVERSION = _IOR('A', 0x00, int),
	SNDRV_PCM_IOCTL_INFO = _IOR('A', 0x01, struct sndrv_pcm_info),
	SNDRV_PCM_IOCTL_TSTAMP = _IOW('A', 0x02, int),
	SNDRV_PCM_IOCTL_HW_REFINE = _IOWR('A', 0x10, struct sndrv_pcm_hw_params),
	SNDRV_PCM_IOCTL_HW_PARAMS = _IOWR('A', 0x11, struct sndrv_pcm_hw_params),
	SNDRV_PCM_IOCTL_HW_FREE = _IO('A', 0x12),
	SNDRV_PCM_IOCTL_SW_PARAMS = _IOWR('A', 0x13, struct sndrv_pcm_sw_params),
	SNDRV_PCM_IOCTL_STATUS = _IOR('A', 0x20, struct sndrv_pcm_status),
	SNDRV_PCM_IOCTL_DELAY = _IOR('A', 0x21, sndrv_pcm_sframes_t),
	SNDRV_PCM_IOCTL_HWSYNC = _IO('A', 0x22),
	SNDRV_PCM_IOCTL_SYNC_PTR = _IOWR('A', 0x23, struct sndrv_pcm_sync_ptr),
	SNDRV_PCM_IOCTL_CHANNEL_INFO = _IOR('A', 0x32, struct sndrv_pcm_channel_info),
	SNDRV_PCM_IOCTL_PREPARE = _IO('A', 0x40),
	SNDRV_PCM_IOCTL_RESET = _IO('A', 0x41),
	SNDRV_PCM_IOCTL_START = _IO('A', 0x42),
	SNDRV_PCM_IOCTL_DROP = _IO('A', 0x43),
	SNDRV_PCM_IOCTL_DRAIN = _IO('A', 0x44),
	SNDRV_PCM_IOCTL_PAUSE = _IOW('A', 0x45, int),
	SNDRV_PCM_IOCTL_REWIND = _IOW('A', 0x46, sndrv_pcm_uframes_t),
	SNDRV_PCM_IOCTL_RESUME = _IO('A', 0x47),
	SNDRV_PCM_IOCTL_XRUN = _IO('A', 0x48),
	SNDRV_PCM_IOCTL_FORWARD = _IOW('A', 0x49, sndrv_pcm_uframes_t),
	SNDRV_PCM_IOCTL_WRITEI_FRAMES = _IOW('A', 0x50, struct sndrv_xferi),
	SNDRV_PCM_IOCTL_READI_FRAMES = _IOR('A', 0x51, struct sndrv_xferi),
	SNDRV_PCM_IOCTL_WRITEN_FRAMES = _IOW('A', 0x52, struct sndrv_xfern),
	SNDRV_PCM_IOCTL_READN_FRAMES = _IOR('A', 0x53, struct sndrv_xfern),
	SNDRV_PCM_IOCTL_LINK = _IOW('A', 0x60, int),
	SNDRV_PCM_IOCTL_UNLINK = _IO('A', 0x61),
};

/* Trick to make alsa-lib/acinclude.m4 happy */
#define SNDRV_PCM_IOCTL_REWIND SNDRV_PCM_IOCTL_REWIND

/*****************************************************************************
 *                                                                           *
 *                            MIDI v1.0 interface                            *
 *                                                                           *
 *****************************************************************************/

/*
 *  Raw MIDI section - /dev/snd/midi??
 */

#define SNDRV_RAWMIDI_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 0)

enum sndrv_rawmidi_stream {
	SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
	SNDRV_RAWMIDI_STREAM_INPUT,
	SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
};

#define SNDRV_RAWMIDI_INFO_OUTPUT		0x00000001
#define SNDRV_RAWMIDI_INFO_INPUT		0x00000002
#define SNDRV_RAWMIDI_INFO_DUPLEX		0x00000004

struct sndrv_rawmidi_info {
	unsigned int device;		/* RO/WR (control): device number */
	unsigned int subdevice;		/* RO/WR (control): subdevice number */
	enum sndrv_rawmidi_stream stream; /* WR: stream */
	int card;			/* R: card number */
	unsigned int flags;		/* SNDRV_RAWMIDI_INFO_XXXX */
	unsigned char id[64];		/* ID (user selectable) */
	unsigned char name[80];		/* name of device */
	unsigned char subname[32];	/* name of active or selected subdevice */
	unsigned int subdevices_count;
	unsigned int subdevices_avail;
	unsigned char reserved[64];	/* reserved for future use */
};

struct sndrv_rawmidi_params {
	enum sndrv_rawmidi_stream stream;
	size_t buffer_size;		/* queue size in bytes */
	size_t avail_min;		/* minimum avail bytes for wakeup */
	unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
	unsigned char reserved[16];	/* reserved for future use */
};

struct sndrv_rawmidi_status {
	enum sndrv_rawmidi_stream stream;
	struct timespec tstamp;		/* Timestamp */
	size_t avail;			/* available bytes */
	size_t xruns;			/* count of overruns since last status (in bytes) */
	unsigned char reserved[16];	/* reserved for future use */
};

enum {
	SNDRV_RAWMIDI_IOCTL_PVERSION = _IOR('W', 0x00, int),
	SNDRV_RAWMIDI_IOCTL_INFO = _IOR('W', 0x01, struct sndrv_rawmidi_info),
	SNDRV_RAWMIDI_IOCTL_PARAMS = _IOWR('W', 0x10, struct sndrv_rawmidi_params),
	SNDRV_RAWMIDI_IOCTL_STATUS = _IOWR('W', 0x20, struct sndrv_rawmidi_status),
	SNDRV_RAWMIDI_IOCTL_DROP = _IOW('W', 0x30, int),
	SNDRV_RAWMIDI_IOCTL_DRAIN = _IOW('W', 0x31, int),
};

/*
 *  Timer section - /dev/snd/timer
 */

#define SNDRV_TIMER_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 2)

enum sndrv_timer_class {
	SNDRV_TIMER_CLASS_NONE = -1,
	SNDRV_TIMER_CLASS_SLAVE = 0,
	SNDRV_TIMER_CLASS_GLOBAL,
	SNDRV_TIMER_CLASS_CARD,
	SNDRV_TIMER_CLASS_PCM,
	SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
};

/* slave timer classes */
enum sndrv_timer_slave_class {
	SNDRV_TIMER_SCLASS_NONE = 0,
	SNDRV_TIMER_SCLASS_APPLICATION,
	SNDRV_TIMER_SCLASS_SEQUENCER,		/* alias */
	SNDRV_TIMER_SCLASS_OSS_SEQUENCER,	/* alias */
	SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
};

/* global timers (device member) */
#define SNDRV_TIMER_GLOBAL_SYSTEM	0
#define SNDRV_TIMER_GLOBAL_RTC		1

/* info flags */
#define SNDRV_TIMER_FLG_SLAVE		(1<<0)	/* cannot be controlled */

struct sndrv_timer_id {
	enum sndrv_timer_class dev_class;	
	enum sndrv_timer_slave_class dev_sclass;
	int card;
	int device;
	int subdevice;
};

struct sndrv_timer_ginfo {
	struct sndrv_timer_id tid;	/* requested timer ID */
	unsigned int flags;		/* timer flags - SNDRV_TIMER_FLG_* */
	int card;			/* card number */
	unsigned char id[64];		/* timer identification */
	unsigned char name[80];		/* timer name */
	unsigned long reserved0;	/* reserved for future use */
	unsigned long resolution;	/* average period resolution in ns */
	unsigned long resolution_min;	/* minimal period resolution in ns */
	unsigned long resolution_max;	/* maximal period resolution in ns */
	unsigned int clients;		/* active timer clients */
	unsigned char reserved[32];
};

struct sndrv_timer_gparams {
	struct sndrv_timer_id tid;	/* requested timer ID */
	unsigned long period_num;	/* requested precise period duration (in seconds) - numerator */
	unsigned long period_den;	/* requested precise period duration (in seconds) - denominator */
	unsigned char reserved[32];
};

struct sndrv_timer_gstatus {
	struct sndrv_timer_id tid;	/* requested timer ID */
	unsigned long resolution;	/* current period resolution in ns */
	unsigned long resolution_num;	/* precise current period resolution (in seconds) - numerator */
	unsigned long resolution_den;	/* precise current period resolution (in seconds) - denominator */
	unsigned char reserved[32];
};

struct sndrv_timer_select {
	struct sndrv_timer_id id;	/* bind to timer ID */
	unsigned char reserved[32];	/* reserved */
};

struct sndrv_timer_info {
	unsigned int flags;		/* timer flags - SNDRV_TIMER_FLG_* */
	int card;			/* card number */
	unsigned char id[64];		/* timer identificator */
	unsigned char name[80];		/* timer name */
	unsigned long reserved0;	/* reserved for future use */
	unsigned long resolution;	/* average period resolution in ns */
	unsigned char reserved[64];	/* reserved */
};

#define SNDRV_TIMER_PSFLG_AUTO		(1<<0)	/* auto start, otherwise one-shot */
#define SNDRV_TIMER_PSFLG_EXCLUSIVE	(1<<1)	/* exclusive use, precise start/stop/pause/continue */
#define SNDRV_TIMER_PSFLG_EARLY_EVENT	(1<<2)	/* write early event to the poll queue */

struct sndrv_timer_params {
	unsigned int flags;		/* flags - SNDRV_MIXER_PSFLG_* */
	unsigned int ticks;		/* requested resolution in ticks */
	unsigned int queue_size;	/* total size of queue (32-1024) */
	unsigned int reserved0;		/* reserved, was: failure locations */
	unsigned int filter;		/* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
	unsigned char reserved[60];	/* reserved */
};

struct sndrv_timer_status {
	struct timespec tstamp;		/* Timestamp - last update */
	unsigned int resolution;	/* current period resolution in ns */
	unsigned int lost;		/* counter of master tick lost */
	unsigned int overrun;		/* count of read queue overruns */
	unsigned int queue;		/* used queue size */
	unsigned char reserved[64];	/* reserved */
};

enum {
	SNDRV_TIMER_IOCTL_PVERSION = _IOR('T', 0x00, int),
	SNDRV_TIMER_IOCTL_NEXT_DEVICE = _IOWR('T', 0x01, struct sndrv_timer_id),
	SNDRV_TIMER_IOCTL_TREAD = _IOW('T', 0x02, int),
	SNDRV_TIMER_IOCTL_GINFO = _IOWR('T', 0x03, struct sndrv_timer_ginfo),
	SNDRV_TIMER_IOCTL_GPARAMS = _IOW('T', 0x04, struct sndrv_timer_gparams),
	SNDRV_TIMER_IOCTL_GSTATUS = _IOWR('T', 0x05, struct sndrv_timer_gstatus),
	SNDRV_TIMER_IOCTL_SELECT = _IOW('T', 0x10, struct sndrv_timer_select),
	SNDRV_TIMER_IOCTL_INFO = _IOR('T', 0x11, struct sndrv_timer_info),
	SNDRV_TIMER_IOCTL_PARAMS = _IOW('T', 0x12, struct sndrv_timer_params),
	SNDRV_TIMER_IOCTL_STATUS = _IOR('T', 0x14, struct sndrv_timer_status),
	SNDRV_TIMER_IOCTL_START = _IO('T', 0x20),
	SNDRV_TIMER_IOCTL_STOP = _IO('T', 0x21),
	SNDRV_TIMER_IOCTL_CONTINUE = _IO('T', 0x22),
	SNDRV_TIMER_IOCTL_PAUSE = _IO('T', 0x23),
};

struct sndrv_timer_read {
	unsigned int resolution;
	unsigned int ticks;
};

enum sndrv_timer_event {
	SNDRV_TIMER_EVENT_RESOLUTION = 0,	/* val = resolution in ns */
	SNDRV_TIMER_EVENT_TICK,			/* val = ticks */
	SNDRV_TIMER_EVENT_START,		/* val = resolution in ns */
	SNDRV_TIMER_EVENT_STOP,			/* val = 0 */
	SNDRV_TIMER_EVENT_CONTINUE,		/* val = resolution in ns */
	SNDRV_TIMER_EVENT_PAUSE,		/* val = 0 */
	SNDRV_TIMER_EVENT_EARLY,		/* val = 0, early event */
	/* master timer events for slave timer instances */
	SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
	SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
	SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
	SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
};

struct sndrv_timer_tread {
	enum sndrv_timer_event event;
	struct timespec tstamp;
	unsigned int val;
};

/****************************************************************************
 *                                                                          *
 *        Section for driver control interface - /dev/snd/control?          *
 *                                                                          *
 ****************************************************************************/

#define SNDRV_CTL_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 3)

struct sndrv_ctl_card_info {
	int card;			/* card number */
	int pad;			/* reserved for future (was type) */
	unsigned char id[16];		/* ID of card (user selectable) */
	unsigned char driver[16];	/* Driver name */
	unsigned char name[32];		/* Short name of soundcard */
	unsigned char longname[80];	/* name + info text about soundcard */
	unsigned char reserved_[16];	/* reserved for future (was ID of mixer) */
	unsigned char mixername[80];	/* visual mixer identification */
	unsigned char components[80];	/* card components / fine identification, delimited with one space (AC97 etc..) */
	unsigned char reserved[48];	/* reserved for future */
};

enum sndrv_ctl_elem_type {
	SNDRV_CTL_ELEM_TYPE_NONE = 0,		/* invalid */
	SNDRV_CTL_ELEM_TYPE_BOOLEAN,		/* boolean type */
	SNDRV_CTL_ELEM_TYPE_INTEGER,		/* integer type */
	SNDRV_CTL_ELEM_TYPE_ENUMERATED,		/* enumerated type */
	SNDRV_CTL_ELEM_TYPE_BYTES,		/* byte array */
	SNDRV_CTL_ELEM_TYPE_IEC958,		/* IEC958 (S/PDIF) setup */
	SNDRV_CTL_ELEM_TYPE_INTEGER64,		/* 64-bit integer type */
	SNDRV_CTL_ELEM_TYPE_LAST = SNDRV_CTL_ELEM_TYPE_INTEGER64,
};

enum sndrv_ctl_elem_iface {
	SNDRV_CTL_ELEM_IFACE_CARD = 0,		/* global control */
	SNDRV_CTL_ELEM_IFACE_HWDEP,		/* hardware dependent device */
	SNDRV_CTL_ELEM_IFACE_MIXER,		/* virtual mixer device */
	SNDRV_CTL_ELEM_IFACE_PCM,		/* PCM device */
	SNDRV_CTL_ELEM_IFACE_RAWMIDI,		/* RawMidi device */
	SNDRV_CTL_ELEM_IFACE_TIMER,		/* timer device */
	SNDRV_CTL_ELEM_IFACE_SEQUENCER,		/* sequencer client */
	SNDRV_CTL_ELEM_IFACE_LAST = SNDRV_CTL_ELEM_IFACE_SEQUENCER,
};

#define SNDRV_CTL_ELEM_ACCESS_READ		(1<<0)
#define SNDRV_CTL_ELEM_ACCESS_WRITE		(1<<1)
#define SNDRV_CTL_ELEM_ACCESS_READWRITE		(SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
#define SNDRV_CTL_ELEM_ACCESS_VOLATILE		(1<<2)	/* control value may be changed without a notification */
#define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP		(1<<2)	/* when was control changed */
#define SNDRV_CTL_ELEM_ACCESS_INACTIVE		(1<<8)	/* control does actually nothing, but may be updated */
#define SNDRV_CTL_ELEM_ACCESS_LOCK		(1<<9)	/* write lock */
#define SNDRV_CTL_ELEM_ACCESS_OWNER		(1<<10)	/* write lock owner */
#define SNDRV_CTL_ELEM_ACCESS_USER		(1<<29) /* user space element */
#define SNDRV_CTL_ELEM_ACCESS_DINDIRECT		(1<<30)	/* indirect access for matrix dimensions in the info structure */
#define SNDRV_CTL_ELEM_ACCESS_INDIRECT		(1<<31)	/* indirect access for element value in the value structure */

/* for further details see the ACPI and PCI power management specification */
#define SNDRV_CTL_POWER_D0		0x0000	/* full On */
#define SNDRV_CTL_POWER_D1		0x0100	/* partial On */
#define SNDRV_CTL_POWER_D2		0x0200	/* partial On */
#define SNDRV_CTL_POWER_D3		0x0300	/* Off */
#define SNDRV_CTL_POWER_D3hot		(SNDRV_CTL_POWER_D3|0x0000)	/* Off, with power */
#define SNDRV_CTL_POWER_D3cold		(SNDRV_CTL_POWER_D3|0x0001)	/* Off, without power */

struct sndrv_ctl_elem_id {
	unsigned int numid;		/* numeric identifier, zero = invalid */
	enum sndrv_ctl_elem_iface iface; /* interface identifier */
	unsigned int device;		/* device/client number */
	unsigned int subdevice;		/* subdevice (substream) number */
        unsigned char name[44];		/* ASCII name of item */
	unsigned int index;		/* index of item */
};

struct sndrv_ctl_elem_list {
	unsigned int offset;		/* W: first element ID to get */
	unsigned int space;		/* W: count of element IDs to get */
	unsigned int used;		/* R: count of element IDs set */
	unsigned int count;		/* R: count of all elements */
	struct sndrv_ctl_elem_id __user *pids; /* R: IDs */
	unsigned char reserved[50];
};

struct sndrv_ctl_elem_info {
	struct sndrv_ctl_elem_id id;	/* W: element ID */
	enum sndrv_ctl_elem_type type;	/* R: value type - SNDRV_CTL_ELEM_TYPE_* */
	unsigned int access;		/* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
	unsigned int count;		/* count of values */
	pid_t owner;			/* owner's PID of this control */
	union {
		struct {
			long min;		/* R: minimum value */
			long max;		/* R: maximum value */
			long step;		/* R: step (0 variable) */
		} integer;
		struct {
			long long min;		/* R: minimum value */
			long long max;		/* R: maximum value */
			long long step;		/* R: step (0 variable) */
		} integer64;
		struct {
			unsigned int items;	/* R: number of items */
			unsigned int item;	/* W: item number */
			char name[64];		/* R: value name */
		} enumerated;
		unsigned char reserved[128];
	} value;
	union {
		unsigned short d[4];		/* dimensions */
		unsigned short *d_ptr;		/* indirect */
	} dimen;
	unsigned char reserved[64-4*sizeof(unsigned short)];
};

struct sndrv_ctl_elem_value {
	struct sndrv_ctl_elem_id id;	/* W: element ID */
	unsigned int indirect: 1;	/* W: use indirect pointer (xxx_ptr member) */
        union {
		union {
			long value[128];
			long *value_ptr;
		} integer;
		union {
			long long value[64];
			long long *value_ptr;
		} integer64;
		union {
			unsigned int item[128];
			unsigned int *item_ptr;
		} enumerated;
		union {
			unsigned char data[512];
			unsigned char *data_ptr;
		} bytes;
		struct sndrv_aes_iec958 iec958;
        } value;                /* RO */
	struct timespec tstamp;
        unsigned char reserved[128-sizeof(struct timespec)];
};

enum {
	SNDRV_CTL_IOCTL_PVERSION = _IOR('U', 0x00, int),
	SNDRV_CTL_IOCTL_CARD_INFO = _IOR('U', 0x01, struct sndrv_ctl_card_info),
	SNDRV_CTL_IOCTL_ELEM_LIST = _IOWR('U', 0x10, struct sndrv_ctl_elem_list),
	SNDRV_CTL_IOCTL_ELEM_INFO = _IOWR('U', 0x11, struct sndrv_ctl_elem_info),
	SNDRV_CTL_IOCTL_ELEM_READ = _IOWR('U', 0x12, struct sndrv_ctl_elem_value),
	SNDRV_CTL_IOCTL_ELEM_WRITE = _IOWR('U', 0x13, struct sndrv_ctl_elem_value),
	SNDRV_CTL_IOCTL_ELEM_LOCK = _IOW('U', 0x14, struct sndrv_ctl_elem_id),
	SNDRV_CTL_IOCTL_ELEM_UNLOCK = _IOW('U', 0x15, struct sndrv_ctl_elem_id),
	SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS = _IOWR('U', 0x16, int),
	SNDRV_CTL_IOCTL_ELEM_ADD = _IOWR('U', 0x17, struct sndrv_ctl_elem_info),
	SNDRV_CTL_IOCTL_ELEM_REPLACE = _IOWR('U', 0x18, struct sndrv_ctl_elem_info),
	SNDRV_CTL_IOCTL_ELEM_REMOVE = _IOWR('U', 0x19, struct sndrv_ctl_elem_id),
	SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE = _IOWR('U', 0x20, int),
	SNDRV_CTL_IOCTL_HWDEP_INFO = _IOR('U', 0x21, struct sndrv_hwdep_info),
	SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE = _IOR('U', 0x30, int),
	SNDRV_CTL_IOCTL_PCM_INFO = _IOWR('U', 0x31, struct sndrv_pcm_info),
	SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE = _IOW('U', 0x32, int),
	SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE = _IOWR('U', 0x40, int),
	SNDRV_CTL_IOCTL_RAWMIDI_INFO = _IOWR('U', 0x41, struct sndrv_rawmidi_info),
	SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE = _IOW('U', 0x42, int),
	SNDRV_CTL_IOCTL_POWER = _IOWR('U', 0xd0, int),
	SNDRV_CTL_IOCTL_POWER_STATE = _IOR('U', 0xd1, int),
};

/*
 *  Read interface.
 */

enum sndrv_ctl_event_type {
	SNDRV_CTL_EVENT_ELEM = 0,
	SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
};

#define SNDRV_CTL_EVENT_MASK_VALUE	(1<<0)	/* element value was changed */
#define SNDRV_CTL_EVENT_MASK_INFO	(1<<1)	/* element info was changed */
#define SNDRV_CTL_EVENT_MASK_ADD	(1<<2)	/* element was added */
#define SNDRV_CTL_EVENT_MASK_REMOVE	(~0U)	/* element was removed */

struct sndrv_ctl_event {
	enum sndrv_ctl_event_type type;	/* event type - SNDRV_CTL_EVENT_* */
	union {
		struct {
			unsigned int mask;
			struct sndrv_ctl_elem_id id;
		} elem;
                unsigned char data8[60];
        } data;
};

/*
 *  Control names
 */

#define SNDRV_CTL_NAME_NONE				""
#define SNDRV_CTL_NAME_PLAYBACK				"Playback "
#define SNDRV_CTL_NAME_CAPTURE				"Capture "

#define SNDRV_CTL_NAME_IEC958_NONE			""
#define SNDRV_CTL_NAME_IEC958_SWITCH			"Switch"
#define SNDRV_CTL_NAME_IEC958_VOLUME			"Volume"
#define SNDRV_CTL_NAME_IEC958_DEFAULT			"Default"
#define SNDRV_CTL_NAME_IEC958_MASK			"Mask"
#define SNDRV_CTL_NAME_IEC958_CON_MASK			"Con Mask"
#define SNDRV_CTL_NAME_IEC958_PRO_MASK			"Pro Mask"
#define SNDRV_CTL_NAME_IEC958_PCM_STREAM		"PCM Stream"
#define SNDRV_CTL_NAME_IEC958(expl,direction,what)	"IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what

/*
 *
 */

struct sndrv_xferv {
	const struct iovec *vector;
	unsigned long count;
};

enum {
	SNDRV_IOCTL_READV = _IOW('K', 0x00, struct sndrv_xferv),
	SNDRV_IOCTL_WRITEV = _IOW('K', 0x01, struct sndrv_xferv),
};

#endif /* __SOUND_ASOUND_H */