1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
2/*
3 * Advanced Linux Sound Architecture - ALSA - Driver
4 * Copyright (c) 1994-2003 by Jaroslav Kysela <perex@perex.cz>,
5 * Abramo Bagnara <abramo@alsa-project.org>
6 *
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24#ifndef __SOUND_ASOUND_H
25#define __SOUND_ASOUND_H
26
27#if defined(__KERNEL__) || defined(__linux__)
28#include <linux/types.h>
29#else
30#include <sys/ioctl.h>
31#endif
32
33#include <stdlib.h>
34#include <time.h>
35
36/*
37 * protocol version
38 */
39
40#define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
41#define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
42#define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
43#define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
44#define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
45 (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
46 (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
47 SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))
48
49/****************************************************************************
50 * *
51 * Digital audio interface *
52 * *
53 ****************************************************************************/
54
55struct snd_aes_iec958 {
56 unsigned char status[24]; /* AES/IEC958 channel status bits */
57 unsigned char subcode[147]; /* AES/IEC958 subcode bits */
58 unsigned char pad; /* nothing */
59 unsigned char dig_subframe[4]; /* AES/IEC958 subframe bits */
60};
61
62/****************************************************************************
63 * *
64 * CEA-861 Audio InfoFrame. Used in HDMI and DisplayPort *
65 * *
66 ****************************************************************************/
67
68struct snd_cea_861_aud_if {
69 unsigned char db1_ct_cc; /* coding type and channel count */
70 unsigned char db2_sf_ss; /* sample frequency and size */
71 unsigned char db3; /* not used, all zeros */
72 unsigned char db4_ca; /* channel allocation code */
73 unsigned char db5_dminh_lsv; /* downmix inhibit & level-shit values */
74};
75
76/****************************************************************************
77 * *
78 * Section for driver hardware dependent interface - /dev/snd/hw? *
79 * *
80 ****************************************************************************/
81
82#define SNDRV_HWDEP_VERSION SNDRV_PROTOCOL_VERSION(1, 0, 1)
83
84enum {
85 SNDRV_HWDEP_IFACE_OPL2 = 0,
86 SNDRV_HWDEP_IFACE_OPL3,
87 SNDRV_HWDEP_IFACE_OPL4,
88 SNDRV_HWDEP_IFACE_SB16CSP, /* Creative Signal Processor */
89 SNDRV_HWDEP_IFACE_EMU10K1, /* FX8010 processor in EMU10K1 chip */
90 SNDRV_HWDEP_IFACE_YSS225, /* Yamaha FX processor */
91 SNDRV_HWDEP_IFACE_ICS2115, /* Wavetable synth */
92 SNDRV_HWDEP_IFACE_SSCAPE, /* Ensoniq SoundScape ISA card (MC68EC000) */
93 SNDRV_HWDEP_IFACE_VX, /* Digigram VX cards */
94 SNDRV_HWDEP_IFACE_MIXART, /* Digigram miXart cards */
95 SNDRV_HWDEP_IFACE_USX2Y, /* Tascam US122, US224 & US428 usb */
96 SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */
97 SNDRV_HWDEP_IFACE_BLUETOOTH, /* Bluetooth audio */
98 SNDRV_HWDEP_IFACE_USX2Y_PCM, /* Tascam US122, US224 & US428 rawusb pcm */
99 SNDRV_HWDEP_IFACE_PCXHR, /* Digigram PCXHR */
100 SNDRV_HWDEP_IFACE_SB_RC, /* SB Extigy/Audigy2NX remote control */
101 SNDRV_HWDEP_IFACE_HDA, /* HD-audio */
102 SNDRV_HWDEP_IFACE_USB_STREAM, /* direct access to usb stream */
103 SNDRV_HWDEP_IFACE_FW_DICE, /* TC DICE FireWire device */
104 SNDRV_HWDEP_IFACE_FW_FIREWORKS, /* Echo Audio Fireworks based device */
105 SNDRV_HWDEP_IFACE_FW_BEBOB, /* BridgeCo BeBoB based device */
106 SNDRV_HWDEP_IFACE_FW_OXFW, /* Oxford OXFW970/971 based device */
107 SNDRV_HWDEP_IFACE_FW_DIGI00X, /* Digidesign Digi 002/003 family */
108 SNDRV_HWDEP_IFACE_FW_TASCAM, /* TASCAM FireWire series */
109 SNDRV_HWDEP_IFACE_LINE6, /* Line6 USB processors */
110 SNDRV_HWDEP_IFACE_FW_MOTU, /* MOTU FireWire series */
111 SNDRV_HWDEP_IFACE_FW_FIREFACE, /* RME Fireface series */
112
113 /* Don't forget to change the following: */
114 SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_FW_FIREFACE
115};
116
117struct snd_hwdep_info {
118 unsigned int device; /* WR: device number */
119 int card; /* R: card number */
120 unsigned char id[64]; /* ID (user selectable) */
121 unsigned char name[80]; /* hwdep name */
122 int iface; /* hwdep interface */
123 unsigned char reserved[64]; /* reserved for future */
124};
125
126/* generic DSP loader */
127struct snd_hwdep_dsp_status {
128 unsigned int version; /* R: driver-specific version */
129 unsigned char id[32]; /* R: driver-specific ID string */
130 unsigned int num_dsps; /* R: number of DSP images to transfer */
131 unsigned int dsp_loaded; /* R: bit flags indicating the loaded DSPs */
132 unsigned int chip_ready; /* R: 1 = initialization finished */
133 unsigned char reserved[16]; /* reserved for future use */
134};
135
136struct snd_hwdep_dsp_image {
137 unsigned int index; /* W: DSP index */
138 unsigned char name[64]; /* W: ID (e.g. file name) */
139 unsigned char *image; /* W: binary image */
140 size_t length; /* W: size of image in bytes */
141 unsigned long driver_data; /* W: driver-specific data */
142};
143
144#define SNDRV_HWDEP_IOCTL_PVERSION _IOR ('H', 0x00, int)
145#define SNDRV_HWDEP_IOCTL_INFO _IOR ('H', 0x01, struct snd_hwdep_info)
146#define SNDRV_HWDEP_IOCTL_DSP_STATUS _IOR('H', 0x02, struct snd_hwdep_dsp_status)
147#define SNDRV_HWDEP_IOCTL_DSP_LOAD _IOW('H', 0x03, struct snd_hwdep_dsp_image)
148
149/*****************************************************************************
150 * *
151 * Digital Audio (PCM) interface - /dev/snd/pcm?? *
152 * *
153 *****************************************************************************/
154
155#define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 14)
156
157typedef unsigned long snd_pcm_uframes_t;
158typedef signed long snd_pcm_sframes_t;
159
160enum {
161 SNDRV_PCM_CLASS_GENERIC = 0, /* standard mono or stereo device */
162 SNDRV_PCM_CLASS_MULTI, /* multichannel device */
163 SNDRV_PCM_CLASS_MODEM, /* software modem class */
164 SNDRV_PCM_CLASS_DIGITIZER, /* digitizer class */
165 /* Don't forget to change the following: */
166 SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
167};
168
169enum {
170 SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
171 SNDRV_PCM_SUBCLASS_MULTI_MIX, /* multichannel subdevices are mixed together */
172 /* Don't forget to change the following: */
173 SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
174};
175
176enum {
177 SNDRV_PCM_STREAM_PLAYBACK = 0,
178 SNDRV_PCM_STREAM_CAPTURE,
179 SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
180};
181
182typedef int __bitwise snd_pcm_access_t;
183#define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED ((snd_pcm_access_t) 0) /* interleaved mmap */
184#define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED ((snd_pcm_access_t) 1) /* noninterleaved mmap */
185#define SNDRV_PCM_ACCESS_MMAP_COMPLEX ((snd_pcm_access_t) 2) /* complex mmap */
186#define SNDRV_PCM_ACCESS_RW_INTERLEAVED ((snd_pcm_access_t) 3) /* readi/writei */
187#define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED ((snd_pcm_access_t) 4) /* readn/writen */
188#define SNDRV_PCM_ACCESS_LAST SNDRV_PCM_ACCESS_RW_NONINTERLEAVED
189
190typedef int __bitwise snd_pcm_format_t;
191#define SNDRV_PCM_FORMAT_S8 ((snd_pcm_format_t) 0)
192#define SNDRV_PCM_FORMAT_U8 ((snd_pcm_format_t) 1)
193#define SNDRV_PCM_FORMAT_S16_LE ((snd_pcm_format_t) 2)
194#define SNDRV_PCM_FORMAT_S16_BE ((snd_pcm_format_t) 3)
195#define SNDRV_PCM_FORMAT_U16_LE ((snd_pcm_format_t) 4)
196#define SNDRV_PCM_FORMAT_U16_BE ((snd_pcm_format_t) 5)
197#define SNDRV_PCM_FORMAT_S24_LE ((snd_pcm_format_t) 6) /* low three bytes */
198#define SNDRV_PCM_FORMAT_S24_BE ((snd_pcm_format_t) 7) /* low three bytes */
199#define SNDRV_PCM_FORMAT_U24_LE ((snd_pcm_format_t) 8) /* low three bytes */
200#define SNDRV_PCM_FORMAT_U24_BE ((snd_pcm_format_t) 9) /* low three bytes */
201#define SNDRV_PCM_FORMAT_S32_LE ((snd_pcm_format_t) 10)
202#define SNDRV_PCM_FORMAT_S32_BE ((snd_pcm_format_t) 11)
203#define SNDRV_PCM_FORMAT_U32_LE ((snd_pcm_format_t) 12)
204#define SNDRV_PCM_FORMAT_U32_BE ((snd_pcm_format_t) 13)
205#define SNDRV_PCM_FORMAT_FLOAT_LE ((snd_pcm_format_t) 14) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
206#define SNDRV_PCM_FORMAT_FLOAT_BE ((snd_pcm_format_t) 15) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
207#define SNDRV_PCM_FORMAT_FLOAT64_LE ((snd_pcm_format_t) 16) /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
208#define SNDRV_PCM_FORMAT_FLOAT64_BE ((snd_pcm_format_t) 17) /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
209#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */
210#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */
211#define SNDRV_PCM_FORMAT_MU_LAW ((snd_pcm_format_t) 20)
212#define SNDRV_PCM_FORMAT_A_LAW ((snd_pcm_format_t) 21)
213#define SNDRV_PCM_FORMAT_IMA_ADPCM ((snd_pcm_format_t) 22)
214#define SNDRV_PCM_FORMAT_MPEG ((snd_pcm_format_t) 23)
215#define SNDRV_PCM_FORMAT_GSM ((snd_pcm_format_t) 24)
216#define SNDRV_PCM_FORMAT_S20_LE ((snd_pcm_format_t) 25) /* in four bytes, LSB justified */
217#define SNDRV_PCM_FORMAT_S20_BE ((snd_pcm_format_t) 26) /* in four bytes, LSB justified */
218#define SNDRV_PCM_FORMAT_U20_LE ((snd_pcm_format_t) 27) /* in four bytes, LSB justified */
219#define SNDRV_PCM_FORMAT_U20_BE ((snd_pcm_format_t) 28) /* in four bytes, LSB justified */
220/* gap in the numbering for a future standard linear format */
221#define SNDRV_PCM_FORMAT_SPECIAL ((snd_pcm_format_t) 31)
222#define SNDRV_PCM_FORMAT_S24_3LE ((snd_pcm_format_t) 32) /* in three bytes */
223#define SNDRV_PCM_FORMAT_S24_3BE ((snd_pcm_format_t) 33) /* in three bytes */
224#define SNDRV_PCM_FORMAT_U24_3LE ((snd_pcm_format_t) 34) /* in three bytes */
225#define SNDRV_PCM_FORMAT_U24_3BE ((snd_pcm_format_t) 35) /* in three bytes */
226#define SNDRV_PCM_FORMAT_S20_3LE ((snd_pcm_format_t) 36) /* in three bytes */
227#define SNDRV_PCM_FORMAT_S20_3BE ((snd_pcm_format_t) 37) /* in three bytes */
228#define SNDRV_PCM_FORMAT_U20_3LE ((snd_pcm_format_t) 38) /* in three bytes */
229#define SNDRV_PCM_FORMAT_U20_3BE ((snd_pcm_format_t) 39) /* in three bytes */
230#define SNDRV_PCM_FORMAT_S18_3LE ((snd_pcm_format_t) 40) /* in three bytes */
231#define SNDRV_PCM_FORMAT_S18_3BE ((snd_pcm_format_t) 41) /* in three bytes */
232#define SNDRV_PCM_FORMAT_U18_3LE ((snd_pcm_format_t) 42) /* in three bytes */
233#define SNDRV_PCM_FORMAT_U18_3BE ((snd_pcm_format_t) 43) /* in three bytes */
234#define SNDRV_PCM_FORMAT_G723_24 ((snd_pcm_format_t) 44) /* 8 samples in 3 bytes */
235#define SNDRV_PCM_FORMAT_G723_24_1B ((snd_pcm_format_t) 45) /* 1 sample in 1 byte */
236#define SNDRV_PCM_FORMAT_G723_40 ((snd_pcm_format_t) 46) /* 8 Samples in 5 bytes */
237#define SNDRV_PCM_FORMAT_G723_40_1B ((snd_pcm_format_t) 47) /* 1 sample in 1 byte */
238#define SNDRV_PCM_FORMAT_DSD_U8 ((snd_pcm_format_t) 48) /* DSD, 1-byte samples DSD (x8) */
239#define SNDRV_PCM_FORMAT_DSD_U16_LE ((snd_pcm_format_t) 49) /* DSD, 2-byte samples DSD (x16), little endian */
240#define SNDRV_PCM_FORMAT_DSD_U32_LE ((snd_pcm_format_t) 50) /* DSD, 4-byte samples DSD (x32), little endian */
241#define SNDRV_PCM_FORMAT_DSD_U16_BE ((snd_pcm_format_t) 51) /* DSD, 2-byte samples DSD (x16), big endian */
242#define SNDRV_PCM_FORMAT_DSD_U32_BE ((snd_pcm_format_t) 52) /* DSD, 4-byte samples DSD (x32), big endian */
243#define SNDRV_PCM_FORMAT_LAST SNDRV_PCM_FORMAT_DSD_U32_BE
244#define SNDRV_PCM_FORMAT_FIRST SNDRV_PCM_FORMAT_S8
245
246#ifdef SNDRV_LITTLE_ENDIAN
247#define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_LE
248#define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_LE
249#define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_LE
250#define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_LE
251#define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_LE
252#define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_LE
253#define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_LE
254#define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_LE
255#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE
256#define SNDRV_PCM_FORMAT_S20 SNDRV_PCM_FORMAT_S20_LE
257#define SNDRV_PCM_FORMAT_U20 SNDRV_PCM_FORMAT_U20_LE
258#endif
259#ifdef SNDRV_BIG_ENDIAN
260#define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_BE
261#define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_BE
262#define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_BE
263#define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_BE
264#define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_BE
265#define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_BE
266#define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_BE
267#define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_BE
268#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE
269#define SNDRV_PCM_FORMAT_S20 SNDRV_PCM_FORMAT_S20_BE
270#define SNDRV_PCM_FORMAT_U20 SNDRV_PCM_FORMAT_U20_BE
271#endif
272
273typedef int __bitwise snd_pcm_subformat_t;
274#define SNDRV_PCM_SUBFORMAT_STD ((snd_pcm_subformat_t) 0)
275#define SNDRV_PCM_SUBFORMAT_LAST SNDRV_PCM_SUBFORMAT_STD
276
277#define SNDRV_PCM_INFO_MMAP 0x00000001 /* hardware supports mmap */
278#define SNDRV_PCM_INFO_MMAP_VALID 0x00000002 /* period data are valid during transfer */
279#define SNDRV_PCM_INFO_DOUBLE 0x00000004 /* Double buffering needed for PCM start/stop */
280#define SNDRV_PCM_INFO_BATCH 0x00000010 /* double buffering */
281#define SNDRV_PCM_INFO_SYNC_APPLPTR 0x00000020 /* need the explicit sync of appl_ptr update */
282#define SNDRV_PCM_INFO_INTERLEAVED 0x00000100 /* channels are interleaved */
283#define SNDRV_PCM_INFO_NONINTERLEAVED 0x00000200 /* channels are not interleaved */
284#define SNDRV_PCM_INFO_COMPLEX 0x00000400 /* complex frame organization (mmap only) */
285#define SNDRV_PCM_INFO_BLOCK_TRANSFER 0x00010000 /* hardware transfer block of samples */
286#define SNDRV_PCM_INFO_OVERRANGE 0x00020000 /* hardware supports ADC (capture) overrange detection */
287#define SNDRV_PCM_INFO_RESUME 0x00040000 /* hardware supports stream resume after suspend */
288#define SNDRV_PCM_INFO_PAUSE 0x00080000 /* pause ioctl is supported */
289#define SNDRV_PCM_INFO_HALF_DUPLEX 0x00100000 /* only half duplex */
290#define SNDRV_PCM_INFO_JOINT_DUPLEX 0x00200000 /* playback and capture stream are somewhat correlated */
291#define SNDRV_PCM_INFO_SYNC_START 0x00400000 /* pcm support some kind of sync go */
292#define SNDRV_PCM_INFO_NO_PERIOD_WAKEUP 0x00800000 /* period wakeup can be disabled */
293#define SNDRV_PCM_INFO_HAS_WALL_CLOCK 0x01000000 /* (Deprecated)has audio wall clock for audio/system time sync */
294#define SNDRV_PCM_INFO_HAS_LINK_ATIME 0x01000000 /* report hardware link audio time, reset on startup */
295#define SNDRV_PCM_INFO_HAS_LINK_ABSOLUTE_ATIME 0x02000000 /* report absolute hardware link audio time, not reset on startup */
296#define SNDRV_PCM_INFO_HAS_LINK_ESTIMATED_ATIME 0x04000000 /* report estimated link audio time */
297#define SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME 0x08000000 /* report synchronized audio/system time */
298
299#define SNDRV_PCM_INFO_DRAIN_TRIGGER 0x40000000 /* internal kernel flag - trigger in drain */
300#define SNDRV_PCM_INFO_FIFO_IN_FRAMES 0x80000000 /* internal kernel flag - FIFO size is in frames */
301
302
303
304typedef int __bitwise snd_pcm_state_t;
305#define SNDRV_PCM_STATE_OPEN ((snd_pcm_state_t) 0) /* stream is open */
306#define SNDRV_PCM_STATE_SETUP ((snd_pcm_state_t) 1) /* stream has a setup */
307#define SNDRV_PCM_STATE_PREPARED ((snd_pcm_state_t) 2) /* stream is ready to start */
308#define SNDRV_PCM_STATE_RUNNING ((snd_pcm_state_t) 3) /* stream is running */
309#define SNDRV_PCM_STATE_XRUN ((snd_pcm_state_t) 4) /* stream reached an xrun */
310#define SNDRV_PCM_STATE_DRAINING ((snd_pcm_state_t) 5) /* stream is draining */
311#define SNDRV_PCM_STATE_PAUSED ((snd_pcm_state_t) 6) /* stream is paused */
312#define SNDRV_PCM_STATE_SUSPENDED ((snd_pcm_state_t) 7) /* hardware is suspended */
313#define SNDRV_PCM_STATE_DISCONNECTED ((snd_pcm_state_t) 8) /* hardware is disconnected */
314#define SNDRV_PCM_STATE_LAST SNDRV_PCM_STATE_DISCONNECTED
315
316enum {
317 SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
318 SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000,
319 SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
320};
321
322union snd_pcm_sync_id {
323 unsigned char id[16];
324 unsigned short id16[8];
325 unsigned int id32[4];
326};
327
328struct snd_pcm_info {
329 unsigned int device; /* RO/WR (control): device number */
330 unsigned int subdevice; /* RO/WR (control): subdevice number */
331 int stream; /* RO/WR (control): stream direction */
332 int card; /* R: card number */
333 unsigned char id[64]; /* ID (user selectable) */
334 unsigned char name[80]; /* name of this device */
335 unsigned char subname[32]; /* subdevice name */
336 int dev_class; /* SNDRV_PCM_CLASS_* */
337 int dev_subclass; /* SNDRV_PCM_SUBCLASS_* */
338 unsigned int subdevices_count;
339 unsigned int subdevices_avail;
340 union snd_pcm_sync_id sync; /* hardware synchronization ID */
341 unsigned char reserved[64]; /* reserved for future... */
342};
343
344typedef int snd_pcm_hw_param_t;
345#define SNDRV_PCM_HW_PARAM_ACCESS 0 /* Access type */
346#define SNDRV_PCM_HW_PARAM_FORMAT 1 /* Format */
347#define SNDRV_PCM_HW_PARAM_SUBFORMAT 2 /* Subformat */
348#define SNDRV_PCM_HW_PARAM_FIRST_MASK SNDRV_PCM_HW_PARAM_ACCESS
349#define SNDRV_PCM_HW_PARAM_LAST_MASK SNDRV_PCM_HW_PARAM_SUBFORMAT
350
351#define SNDRV_PCM_HW_PARAM_SAMPLE_BITS 8 /* Bits per sample */
352#define SNDRV_PCM_HW_PARAM_FRAME_BITS 9 /* Bits per frame */
353#define SNDRV_PCM_HW_PARAM_CHANNELS 10 /* Channels */
354#define SNDRV_PCM_HW_PARAM_RATE 11 /* Approx rate */
355#define SNDRV_PCM_HW_PARAM_PERIOD_TIME 12 /* Approx distance between
356 * interrupts in us
357 */
358#define SNDRV_PCM_HW_PARAM_PERIOD_SIZE 13 /* Approx frames between
359 * interrupts
360 */
361#define SNDRV_PCM_HW_PARAM_PERIOD_BYTES 14 /* Approx bytes between
362 * interrupts
363 */
364#define SNDRV_PCM_HW_PARAM_PERIODS 15 /* Approx interrupts per
365 * buffer
366 */
367#define SNDRV_PCM_HW_PARAM_BUFFER_TIME 16 /* Approx duration of buffer
368 * in us
369 */
370#define SNDRV_PCM_HW_PARAM_BUFFER_SIZE 17 /* Size of buffer in frames */
371#define SNDRV_PCM_HW_PARAM_BUFFER_BYTES 18 /* Size of buffer in bytes */
372#define SNDRV_PCM_HW_PARAM_TICK_TIME 19 /* Approx tick duration in us */
373#define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL SNDRV_PCM_HW_PARAM_SAMPLE_BITS
374#define SNDRV_PCM_HW_PARAM_LAST_INTERVAL SNDRV_PCM_HW_PARAM_TICK_TIME
375
376#define SNDRV_PCM_HW_PARAMS_NORESAMPLE (1<<0) /* avoid rate resampling */
377#define SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER (1<<1) /* export buffer */
378#define SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP (1<<2) /* disable period wakeups */
379
380struct snd_interval {
381 unsigned int min, max;
382 unsigned int openmin:1,
383 openmax:1,
384 integer:1,
385 empty:1;
386};
387
388#define SNDRV_MASK_MAX 256
389
390struct snd_mask {
391 __u32 bits[(SNDRV_MASK_MAX+31)/32];
392};
393
394struct snd_pcm_hw_params {
395 unsigned int flags;
396 struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
397 SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
398 struct snd_mask mres[5]; /* reserved masks */
399 struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
400 SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
401 struct snd_interval ires[9]; /* reserved intervals */
402 unsigned int rmask; /* W: requested masks */
403 unsigned int cmask; /* R: changed masks */
404 unsigned int info; /* R: Info flags for returned setup */
405 unsigned int msbits; /* R: used most significant bits */
406 unsigned int rate_num; /* R: rate numerator */
407 unsigned int rate_den; /* R: rate denominator */
408 snd_pcm_uframes_t fifo_size; /* R: chip FIFO size in frames */
409 unsigned char reserved[64]; /* reserved for future */
410};
411
412enum {
413 SNDRV_PCM_TSTAMP_NONE = 0,
414 SNDRV_PCM_TSTAMP_ENABLE,
415 SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE,
416};
417
418struct snd_pcm_sw_params {
419 int tstamp_mode; /* timestamp mode */
420 unsigned int period_step;
421 unsigned int sleep_min; /* min ticks to sleep */
422 snd_pcm_uframes_t avail_min; /* min avail frames for wakeup */
423 snd_pcm_uframes_t xfer_align; /* obsolete: xfer size need to be a multiple */
424 snd_pcm_uframes_t start_threshold; /* min hw_avail frames for automatic start */
425 snd_pcm_uframes_t stop_threshold; /* min avail frames for automatic stop */
426 snd_pcm_uframes_t silence_threshold; /* min distance from noise for silence filling */
427 snd_pcm_uframes_t silence_size; /* silence block size */
428 snd_pcm_uframes_t boundary; /* pointers wrap point */
429 unsigned int proto; /* protocol version */
430 unsigned int tstamp_type; /* timestamp type (req. proto >= 2.0.12) */
431 unsigned char reserved[56]; /* reserved for future */
432};
433
434struct snd_pcm_channel_info {
435 unsigned int channel;
436 __kernel_off_t offset; /* mmap offset */
437 unsigned int first; /* offset to first sample in bits */
438 unsigned int step; /* samples distance in bits */
439};
440
441enum {
442 /*
443 * first definition for backwards compatibility only,
444 * maps to wallclock/link time for HDAudio playback and DEFAULT/DMA time for everything else
445 */
446 SNDRV_PCM_AUDIO_TSTAMP_TYPE_COMPAT = 0,
447
448 /* timestamp definitions */
449 SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT = 1, /* DMA time, reported as per hw_ptr */
450 SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK = 2, /* link time reported by sample or wallclock counter, reset on startup */
451 SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_ABSOLUTE = 3, /* link time reported by sample or wallclock counter, not reset on startup */
452 SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_ESTIMATED = 4, /* link time estimated indirectly */
453 SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED = 5, /* link time synchronized with system time */
454 SNDRV_PCM_AUDIO_TSTAMP_TYPE_LAST = SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED
455};
456
457struct snd_pcm_status {
458 snd_pcm_state_t state; /* stream state */
459 struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
460 struct timespec tstamp; /* reference timestamp */
461 snd_pcm_uframes_t appl_ptr; /* appl ptr */
462 snd_pcm_uframes_t hw_ptr; /* hw ptr */
463 snd_pcm_sframes_t delay; /* current delay in frames */
464 snd_pcm_uframes_t avail; /* number of frames available */
465 snd_pcm_uframes_t avail_max; /* max frames available on hw since last status */
466 snd_pcm_uframes_t overrange; /* count of ADC (capture) overrange detections from last status */
467 snd_pcm_state_t suspended_state; /* suspended stream state */
468 __u32 audio_tstamp_data; /* needed for 64-bit alignment, used for configs/report to/from userspace */
469 struct timespec audio_tstamp; /* sample counter, wall clock, PHC or on-demand sync'ed */
470 struct timespec driver_tstamp; /* useful in case reference system tstamp is reported with delay */
471 __u32 audio_tstamp_accuracy; /* in ns units, only valid if indicated in audio_tstamp_data */
472 unsigned char reserved[52-2*sizeof(struct timespec)]; /* must be filled with zero */
473};
474
475struct snd_pcm_mmap_status {
476 snd_pcm_state_t state; /* RO: state - SNDRV_PCM_STATE_XXXX */
477 int pad1; /* Needed for 64 bit alignment */
478 snd_pcm_uframes_t hw_ptr; /* RO: hw ptr (0...boundary-1) */
479 struct timespec tstamp; /* Timestamp */
480 snd_pcm_state_t suspended_state; /* RO: suspended stream state */
481 struct timespec audio_tstamp; /* from sample counter or wall clock */
482};
483
484struct snd_pcm_mmap_control {
485 snd_pcm_uframes_t appl_ptr; /* RW: appl ptr (0...boundary-1) */
486 snd_pcm_uframes_t avail_min; /* RW: min available frames for wakeup */
487};
488
489#define SNDRV_PCM_SYNC_PTR_HWSYNC (1<<0) /* execute hwsync */
490#define SNDRV_PCM_SYNC_PTR_APPL (1<<1) /* get appl_ptr from driver (r/w op) */
491#define SNDRV_PCM_SYNC_PTR_AVAIL_MIN (1<<2) /* get avail_min from driver */
492
493struct snd_pcm_sync_ptr {
494 unsigned int flags;
495 union {
496 struct snd_pcm_mmap_status status;
497 unsigned char reserved[64];
498 } s;
499 union {
500 struct snd_pcm_mmap_control control;
501 unsigned char reserved[64];
502 } c;
503};
504
505struct snd_xferi {
506 snd_pcm_sframes_t result;
507 void *buf;
508 snd_pcm_uframes_t frames;
509};
510
511struct snd_xfern {
512 snd_pcm_sframes_t result;
513 void * *bufs;
514 snd_pcm_uframes_t frames;
515};
516
517enum {
518 SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /* gettimeofday equivalent */
519 SNDRV_PCM_TSTAMP_TYPE_MONOTONIC, /* posix_clock_monotonic equivalent */
520 SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW, /* monotonic_raw (no NTP) */
521 SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW,
522};
523
524/* channel positions */
525enum {
526 SNDRV_CHMAP_UNKNOWN = 0,
527 SNDRV_CHMAP_NA, /* N/A, silent */
528 SNDRV_CHMAP_MONO, /* mono stream */
529 /* this follows the alsa-lib mixer channel value + 3 */
530 SNDRV_CHMAP_FL, /* front left */
531 SNDRV_CHMAP_FR, /* front right */
532 SNDRV_CHMAP_RL, /* rear left */
533 SNDRV_CHMAP_RR, /* rear right */
534 SNDRV_CHMAP_FC, /* front center */
535 SNDRV_CHMAP_LFE, /* LFE */
536 SNDRV_CHMAP_SL, /* side left */
537 SNDRV_CHMAP_SR, /* side right */
538 SNDRV_CHMAP_RC, /* rear center */
539 /* new definitions */
540 SNDRV_CHMAP_FLC, /* front left center */
541 SNDRV_CHMAP_FRC, /* front right center */
542 SNDRV_CHMAP_RLC, /* rear left center */
543 SNDRV_CHMAP_RRC, /* rear right center */
544 SNDRV_CHMAP_FLW, /* front left wide */
545 SNDRV_CHMAP_FRW, /* front right wide */
546 SNDRV_CHMAP_FLH, /* front left high */
547 SNDRV_CHMAP_FCH, /* front center high */
548 SNDRV_CHMAP_FRH, /* front right high */
549 SNDRV_CHMAP_TC, /* top center */
550 SNDRV_CHMAP_TFL, /* top front left */
551 SNDRV_CHMAP_TFR, /* top front right */
552 SNDRV_CHMAP_TFC, /* top front center */
553 SNDRV_CHMAP_TRL, /* top rear left */
554 SNDRV_CHMAP_TRR, /* top rear right */
555 SNDRV_CHMAP_TRC, /* top rear center */
556 /* new definitions for UAC2 */
557 SNDRV_CHMAP_TFLC, /* top front left center */
558 SNDRV_CHMAP_TFRC, /* top front right center */
559 SNDRV_CHMAP_TSL, /* top side left */
560 SNDRV_CHMAP_TSR, /* top side right */
561 SNDRV_CHMAP_LLFE, /* left LFE */
562 SNDRV_CHMAP_RLFE, /* right LFE */
563 SNDRV_CHMAP_BC, /* bottom center */
564 SNDRV_CHMAP_BLC, /* bottom left center */
565 SNDRV_CHMAP_BRC, /* bottom right center */
566 SNDRV_CHMAP_LAST = SNDRV_CHMAP_BRC,
567};
568
569#define SNDRV_CHMAP_POSITION_MASK 0xffff
570#define SNDRV_CHMAP_PHASE_INVERSE (0x01 << 16)
571#define SNDRV_CHMAP_DRIVER_SPEC (0x02 << 16)
572
573#define SNDRV_PCM_IOCTL_PVERSION _IOR('A', 0x00, int)
574#define SNDRV_PCM_IOCTL_INFO _IOR('A', 0x01, struct snd_pcm_info)
575#define SNDRV_PCM_IOCTL_TSTAMP _IOW('A', 0x02, int)
576#define SNDRV_PCM_IOCTL_TTSTAMP _IOW('A', 0x03, int)
577#define SNDRV_PCM_IOCTL_USER_PVERSION _IOW('A', 0x04, int)
578#define SNDRV_PCM_IOCTL_HW_REFINE _IOWR('A', 0x10, struct snd_pcm_hw_params)
579#define SNDRV_PCM_IOCTL_HW_PARAMS _IOWR('A', 0x11, struct snd_pcm_hw_params)
580#define SNDRV_PCM_IOCTL_HW_FREE _IO('A', 0x12)
581#define SNDRV_PCM_IOCTL_SW_PARAMS _IOWR('A', 0x13, struct snd_pcm_sw_params)
582#define SNDRV_PCM_IOCTL_STATUS _IOR('A', 0x20, struct snd_pcm_status)
583#define SNDRV_PCM_IOCTL_DELAY _IOR('A', 0x21, snd_pcm_sframes_t)
584#define SNDRV_PCM_IOCTL_HWSYNC _IO('A', 0x22)
585#define SNDRV_PCM_IOCTL_SYNC_PTR _IOWR('A', 0x23, struct snd_pcm_sync_ptr)
586#define SNDRV_PCM_IOCTL_STATUS_EXT _IOWR('A', 0x24, struct snd_pcm_status)
587#define SNDRV_PCM_IOCTL_CHANNEL_INFO _IOR('A', 0x32, struct snd_pcm_channel_info)
588#define SNDRV_PCM_IOCTL_PREPARE _IO('A', 0x40)
589#define SNDRV_PCM_IOCTL_RESET _IO('A', 0x41)
590#define SNDRV_PCM_IOCTL_START _IO('A', 0x42)
591#define SNDRV_PCM_IOCTL_DROP _IO('A', 0x43)
592#define SNDRV_PCM_IOCTL_DRAIN _IO('A', 0x44)
593#define SNDRV_PCM_IOCTL_PAUSE _IOW('A', 0x45, int)
594#define SNDRV_PCM_IOCTL_REWIND _IOW('A', 0x46, snd_pcm_uframes_t)
595#define SNDRV_PCM_IOCTL_RESUME _IO('A', 0x47)
596#define SNDRV_PCM_IOCTL_XRUN _IO('A', 0x48)
597#define SNDRV_PCM_IOCTL_FORWARD _IOW('A', 0x49, snd_pcm_uframes_t)
598#define SNDRV_PCM_IOCTL_WRITEI_FRAMES _IOW('A', 0x50, struct snd_xferi)
599#define SNDRV_PCM_IOCTL_READI_FRAMES _IOR('A', 0x51, struct snd_xferi)
600#define SNDRV_PCM_IOCTL_WRITEN_FRAMES _IOW('A', 0x52, struct snd_xfern)
601#define SNDRV_PCM_IOCTL_READN_FRAMES _IOR('A', 0x53, struct snd_xfern)
602#define SNDRV_PCM_IOCTL_LINK _IOW('A', 0x60, int)
603#define SNDRV_PCM_IOCTL_UNLINK _IO('A', 0x61)
604
605/*****************************************************************************
606 * *
607 * MIDI v1.0 interface *
608 * *
609 *****************************************************************************/
610
611/*
612 * Raw MIDI section - /dev/snd/midi??
613 */
614
615#define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 0)
616
617enum {
618 SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
619 SNDRV_RAWMIDI_STREAM_INPUT,
620 SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
621};
622
623#define SNDRV_RAWMIDI_INFO_OUTPUT 0x00000001
624#define SNDRV_RAWMIDI_INFO_INPUT 0x00000002
625#define SNDRV_RAWMIDI_INFO_DUPLEX 0x00000004
626
627struct snd_rawmidi_info {
628 unsigned int device; /* RO/WR (control): device number */
629 unsigned int subdevice; /* RO/WR (control): subdevice number */
630 int stream; /* WR: stream */
631 int card; /* R: card number */
632 unsigned int flags; /* SNDRV_RAWMIDI_INFO_XXXX */
633 unsigned char id[64]; /* ID (user selectable) */
634 unsigned char name[80]; /* name of device */
635 unsigned char subname[32]; /* name of active or selected subdevice */
636 unsigned int subdevices_count;
637 unsigned int subdevices_avail;
638 unsigned char reserved[64]; /* reserved for future use */
639};
640
641struct snd_rawmidi_params {
642 int stream;
643 size_t buffer_size; /* queue size in bytes */
644 size_t avail_min; /* minimum avail bytes for wakeup */
645 unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
646 unsigned char reserved[16]; /* reserved for future use */
647};
648
649struct snd_rawmidi_status {
650 int stream;
651 struct timespec tstamp; /* Timestamp */
652 size_t avail; /* available bytes */
653 size_t xruns; /* count of overruns since last status (in bytes) */
654 unsigned char reserved[16]; /* reserved for future use */
655};
656
657#define SNDRV_RAWMIDI_IOCTL_PVERSION _IOR('W', 0x00, int)
658#define SNDRV_RAWMIDI_IOCTL_INFO _IOR('W', 0x01, struct snd_rawmidi_info)
659#define SNDRV_RAWMIDI_IOCTL_PARAMS _IOWR('W', 0x10, struct snd_rawmidi_params)
660#define SNDRV_RAWMIDI_IOCTL_STATUS _IOWR('W', 0x20, struct snd_rawmidi_status)
661#define SNDRV_RAWMIDI_IOCTL_DROP _IOW('W', 0x30, int)
662#define SNDRV_RAWMIDI_IOCTL_DRAIN _IOW('W', 0x31, int)
663
664/*
665 * Timer section - /dev/snd/timer
666 */
667
668#define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 6)
669
670enum {
671 SNDRV_TIMER_CLASS_NONE = -1,
672 SNDRV_TIMER_CLASS_SLAVE = 0,
673 SNDRV_TIMER_CLASS_GLOBAL,
674 SNDRV_TIMER_CLASS_CARD,
675 SNDRV_TIMER_CLASS_PCM,
676 SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
677};
678
679/* slave timer classes */
680enum {
681 SNDRV_TIMER_SCLASS_NONE = 0,
682 SNDRV_TIMER_SCLASS_APPLICATION,
683 SNDRV_TIMER_SCLASS_SEQUENCER, /* alias */
684 SNDRV_TIMER_SCLASS_OSS_SEQUENCER, /* alias */
685 SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
686};
687
688/* global timers (device member) */
689#define SNDRV_TIMER_GLOBAL_SYSTEM 0
690#define SNDRV_TIMER_GLOBAL_RTC 1 /* unused */
691#define SNDRV_TIMER_GLOBAL_HPET 2
692#define SNDRV_TIMER_GLOBAL_HRTIMER 3
693
694/* info flags */
695#define SNDRV_TIMER_FLG_SLAVE (1<<0) /* cannot be controlled */
696
697struct snd_timer_id {
698 int dev_class;
699 int dev_sclass;
700 int card;
701 int device;
702 int subdevice;
703};
704
705struct snd_timer_ginfo {
706 struct snd_timer_id tid; /* requested timer ID */
707 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */
708 int card; /* card number */
709 unsigned char id[64]; /* timer identification */
710 unsigned char name[80]; /* timer name */
711 unsigned long reserved0; /* reserved for future use */
712 unsigned long resolution; /* average period resolution in ns */
713 unsigned long resolution_min; /* minimal period resolution in ns */
714 unsigned long resolution_max; /* maximal period resolution in ns */
715 unsigned int clients; /* active timer clients */
716 unsigned char reserved[32];
717};
718
719struct snd_timer_gparams {
720 struct snd_timer_id tid; /* requested timer ID */
721 unsigned long period_num; /* requested precise period duration (in seconds) - numerator */
722 unsigned long period_den; /* requested precise period duration (in seconds) - denominator */
723 unsigned char reserved[32];
724};
725
726struct snd_timer_gstatus {
727 struct snd_timer_id tid; /* requested timer ID */
728 unsigned long resolution; /* current period resolution in ns */
729 unsigned long resolution_num; /* precise current period resolution (in seconds) - numerator */
730 unsigned long resolution_den; /* precise current period resolution (in seconds) - denominator */
731 unsigned char reserved[32];
732};
733
734struct snd_timer_select {
735 struct snd_timer_id id; /* bind to timer ID */
736 unsigned char reserved[32]; /* reserved */
737};
738
739struct snd_timer_info {
740 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */
741 int card; /* card number */
742 unsigned char id[64]; /* timer identificator */
743 unsigned char name[80]; /* timer name */
744 unsigned long reserved0; /* reserved for future use */
745 unsigned long resolution; /* average period resolution in ns */
746 unsigned char reserved[64]; /* reserved */
747};
748
749#define SNDRV_TIMER_PSFLG_AUTO (1<<0) /* auto start, otherwise one-shot */
750#define SNDRV_TIMER_PSFLG_EXCLUSIVE (1<<1) /* exclusive use, precise start/stop/pause/continue */
751#define SNDRV_TIMER_PSFLG_EARLY_EVENT (1<<2) /* write early event to the poll queue */
752
753struct snd_timer_params {
754 unsigned int flags; /* flags - SNDRV_TIMER_PSFLG_* */
755 unsigned int ticks; /* requested resolution in ticks */
756 unsigned int queue_size; /* total size of queue (32-1024) */
757 unsigned int reserved0; /* reserved, was: failure locations */
758 unsigned int filter; /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
759 unsigned char reserved[60]; /* reserved */
760};
761
762struct snd_timer_status {
763 struct timespec tstamp; /* Timestamp - last update */
764 unsigned int resolution; /* current period resolution in ns */
765 unsigned int lost; /* counter of master tick lost */
766 unsigned int overrun; /* count of read queue overruns */
767 unsigned int queue; /* used queue size */
768 unsigned char reserved[64]; /* reserved */
769};
770
771#define SNDRV_TIMER_IOCTL_PVERSION _IOR('T', 0x00, int)
772#define SNDRV_TIMER_IOCTL_NEXT_DEVICE _IOWR('T', 0x01, struct snd_timer_id)
773#define SNDRV_TIMER_IOCTL_TREAD _IOW('T', 0x02, int)
774#define SNDRV_TIMER_IOCTL_GINFO _IOWR('T', 0x03, struct snd_timer_ginfo)
775#define SNDRV_TIMER_IOCTL_GPARAMS _IOW('T', 0x04, struct snd_timer_gparams)
776#define SNDRV_TIMER_IOCTL_GSTATUS _IOWR('T', 0x05, struct snd_timer_gstatus)
777#define SNDRV_TIMER_IOCTL_SELECT _IOW('T', 0x10, struct snd_timer_select)
778#define SNDRV_TIMER_IOCTL_INFO _IOR('T', 0x11, struct snd_timer_info)
779#define SNDRV_TIMER_IOCTL_PARAMS _IOW('T', 0x12, struct snd_timer_params)
780#define SNDRV_TIMER_IOCTL_STATUS _IOR('T', 0x14, struct snd_timer_status)
781/* The following four ioctls are changed since 1.0.9 due to confliction */
782#define SNDRV_TIMER_IOCTL_START _IO('T', 0xa0)
783#define SNDRV_TIMER_IOCTL_STOP _IO('T', 0xa1)
784#define SNDRV_TIMER_IOCTL_CONTINUE _IO('T', 0xa2)
785#define SNDRV_TIMER_IOCTL_PAUSE _IO('T', 0xa3)
786
787struct snd_timer_read {
788 unsigned int resolution;
789 unsigned int ticks;
790};
791
792enum {
793 SNDRV_TIMER_EVENT_RESOLUTION = 0, /* val = resolution in ns */
794 SNDRV_TIMER_EVENT_TICK, /* val = ticks */
795 SNDRV_TIMER_EVENT_START, /* val = resolution in ns */
796 SNDRV_TIMER_EVENT_STOP, /* val = 0 */
797 SNDRV_TIMER_EVENT_CONTINUE, /* val = resolution in ns */
798 SNDRV_TIMER_EVENT_PAUSE, /* val = 0 */
799 SNDRV_TIMER_EVENT_EARLY, /* val = 0, early event */
800 SNDRV_TIMER_EVENT_SUSPEND, /* val = 0 */
801 SNDRV_TIMER_EVENT_RESUME, /* val = resolution in ns */
802 /* master timer events for slave timer instances */
803 SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
804 SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
805 SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
806 SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
807 SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10,
808 SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10,
809};
810
811struct snd_timer_tread {
812 int event;
813 struct timespec tstamp;
814 unsigned int val;
815};
816
817/****************************************************************************
818 * *
819 * Section for driver control interface - /dev/snd/control? *
820 * *
821 ****************************************************************************/
822
823#define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 7)
824
825struct snd_ctl_card_info {
826 int card; /* card number */
827 int pad; /* reserved for future (was type) */
828 unsigned char id[16]; /* ID of card (user selectable) */
829 unsigned char driver[16]; /* Driver name */
830 unsigned char name[32]; /* Short name of soundcard */
831 unsigned char longname[80]; /* name + info text about soundcard */
832 unsigned char reserved_[16]; /* reserved for future (was ID of mixer) */
833 unsigned char mixername[80]; /* visual mixer identification */
834 unsigned char components[128]; /* card components / fine identification, delimited with one space (AC97 etc..) */
835};
836
837typedef int __bitwise snd_ctl_elem_type_t;
838#define SNDRV_CTL_ELEM_TYPE_NONE ((snd_ctl_elem_type_t) 0) /* invalid */
839#define SNDRV_CTL_ELEM_TYPE_BOOLEAN ((snd_ctl_elem_type_t) 1) /* boolean type */
840#define SNDRV_CTL_ELEM_TYPE_INTEGER ((snd_ctl_elem_type_t) 2) /* integer type */
841#define SNDRV_CTL_ELEM_TYPE_ENUMERATED ((snd_ctl_elem_type_t) 3) /* enumerated type */
842#define SNDRV_CTL_ELEM_TYPE_BYTES ((snd_ctl_elem_type_t) 4) /* byte array */
843#define SNDRV_CTL_ELEM_TYPE_IEC958 ((snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */
844#define SNDRV_CTL_ELEM_TYPE_INTEGER64 ((snd_ctl_elem_type_t) 6) /* 64-bit integer type */
845#define SNDRV_CTL_ELEM_TYPE_LAST SNDRV_CTL_ELEM_TYPE_INTEGER64
846
847typedef int __bitwise snd_ctl_elem_iface_t;
848#define SNDRV_CTL_ELEM_IFACE_CARD ((snd_ctl_elem_iface_t) 0) /* global control */
849#define SNDRV_CTL_ELEM_IFACE_HWDEP ((snd_ctl_elem_iface_t) 1) /* hardware dependent device */
850#define SNDRV_CTL_ELEM_IFACE_MIXER ((snd_ctl_elem_iface_t) 2) /* virtual mixer device */
851#define SNDRV_CTL_ELEM_IFACE_PCM ((snd_ctl_elem_iface_t) 3) /* PCM device */
852#define SNDRV_CTL_ELEM_IFACE_RAWMIDI ((snd_ctl_elem_iface_t) 4) /* RawMidi device */
853#define SNDRV_CTL_ELEM_IFACE_TIMER ((snd_ctl_elem_iface_t) 5) /* timer device */
854#define SNDRV_CTL_ELEM_IFACE_SEQUENCER ((snd_ctl_elem_iface_t) 6) /* sequencer client */
855#define SNDRV_CTL_ELEM_IFACE_LAST SNDRV_CTL_ELEM_IFACE_SEQUENCER
856
857#define SNDRV_CTL_ELEM_ACCESS_READ (1<<0)
858#define SNDRV_CTL_ELEM_ACCESS_WRITE (1<<1)
859#define SNDRV_CTL_ELEM_ACCESS_READWRITE (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
860#define SNDRV_CTL_ELEM_ACCESS_VOLATILE (1<<2) /* control value may be changed without a notification */
861#define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP (1<<3) /* when was control changed */
862#define SNDRV_CTL_ELEM_ACCESS_TLV_READ (1<<4) /* TLV read is possible */
863#define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE (1<<5) /* TLV write is possible */
864#define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
865#define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND (1<<6) /* TLV command is possible */
866#define SNDRV_CTL_ELEM_ACCESS_INACTIVE (1<<8) /* control does actually nothing, but may be updated */
867#define SNDRV_CTL_ELEM_ACCESS_LOCK (1<<9) /* write lock */
868#define SNDRV_CTL_ELEM_ACCESS_OWNER (1<<10) /* write lock owner */
869#define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK (1<<28) /* kernel use a TLV callback */
870#define SNDRV_CTL_ELEM_ACCESS_USER (1<<29) /* user space element */
871/* bits 30 and 31 are obsoleted (for indirect access) */
872
873/* for further details see the ACPI and PCI power management specification */
874#define SNDRV_CTL_POWER_D0 0x0000 /* full On */
875#define SNDRV_CTL_POWER_D1 0x0100 /* partial On */
876#define SNDRV_CTL_POWER_D2 0x0200 /* partial On */
877#define SNDRV_CTL_POWER_D3 0x0300 /* Off */
878#define SNDRV_CTL_POWER_D3hot (SNDRV_CTL_POWER_D3|0x0000) /* Off, with power */
879#define SNDRV_CTL_POWER_D3cold (SNDRV_CTL_POWER_D3|0x0001) /* Off, without power */
880
881#define SNDRV_CTL_ELEM_ID_NAME_MAXLEN 44
882
883struct snd_ctl_elem_id {
884 unsigned int numid; /* numeric identifier, zero = invalid */
885 snd_ctl_elem_iface_t iface; /* interface identifier */
886 unsigned int device; /* device/client number */
887 unsigned int subdevice; /* subdevice (substream) number */
888 unsigned char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; /* ASCII name of item */
889 unsigned int index; /* index of item */
890};
891
892struct snd_ctl_elem_list {
893 unsigned int offset; /* W: first element ID to get */
894 unsigned int space; /* W: count of element IDs to get */
895 unsigned int used; /* R: count of element IDs set */
896 unsigned int count; /* R: count of all elements */
897 struct snd_ctl_elem_id *pids; /* R: IDs */
898 unsigned char reserved[50];
899};
900
901struct snd_ctl_elem_info {
902 struct snd_ctl_elem_id id; /* W: element ID */
903 snd_ctl_elem_type_t type; /* R: value type - SNDRV_CTL_ELEM_TYPE_* */
904 unsigned int access; /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
905 unsigned int count; /* count of values */
906 __kernel_pid_t owner; /* owner's PID of this control */
907 union {
908 struct {
909 long min; /* R: minimum value */
910 long max; /* R: maximum value */
911 long step; /* R: step (0 variable) */
912 } integer;
913 struct {
914 long long min; /* R: minimum value */
915 long long max; /* R: maximum value */
916 long long step; /* R: step (0 variable) */
917 } integer64;
918 struct {
919 unsigned int items; /* R: number of items */
920 unsigned int item; /* W: item number */
921 char name[64]; /* R: value name */
922 __u64 names_ptr; /* W: names list (ELEM_ADD only) */
923 unsigned int names_length;
924 } enumerated;
925 unsigned char reserved[128];
926 } value;
927 union {
928 unsigned short d[4]; /* dimensions */
929 unsigned short *d_ptr; /* indirect - obsoleted */
930 } dimen;
931 unsigned char reserved[64-4*sizeof(unsigned short)];
932};
933
934struct snd_ctl_elem_value {
935 struct snd_ctl_elem_id id; /* W: element ID */
936 unsigned int indirect: 1; /* W: indirect access - obsoleted */
937 union {
938 union {
939 long value[128];
940 long *value_ptr; /* obsoleted */
941 } integer;
942 union {
943 long long value[64];
944 long long *value_ptr; /* obsoleted */
945 } integer64;
946 union {
947 unsigned int item[128];
948 unsigned int *item_ptr; /* obsoleted */
949 } enumerated;
950 union {
951 unsigned char data[512];
952 unsigned char *data_ptr; /* obsoleted */
953 } bytes;
954 struct snd_aes_iec958 iec958;
955 } value; /* RO */
956 struct timespec tstamp;
957 unsigned char reserved[128-sizeof(struct timespec)];
958};
959
960struct snd_ctl_tlv {
961 unsigned int numid; /* control element numeric identification */
962 unsigned int length; /* in bytes aligned to 4 */
963 unsigned int tlv[0]; /* first TLV */
964};
965
966#define SNDRV_CTL_IOCTL_PVERSION _IOR('U', 0x00, int)
967#define SNDRV_CTL_IOCTL_CARD_INFO _IOR('U', 0x01, struct snd_ctl_card_info)
968#define SNDRV_CTL_IOCTL_ELEM_LIST _IOWR('U', 0x10, struct snd_ctl_elem_list)
969#define SNDRV_CTL_IOCTL_ELEM_INFO _IOWR('U', 0x11, struct snd_ctl_elem_info)
970#define SNDRV_CTL_IOCTL_ELEM_READ _IOWR('U', 0x12, struct snd_ctl_elem_value)
971#define SNDRV_CTL_IOCTL_ELEM_WRITE _IOWR('U', 0x13, struct snd_ctl_elem_value)
972#define SNDRV_CTL_IOCTL_ELEM_LOCK _IOW('U', 0x14, struct snd_ctl_elem_id)
973#define SNDRV_CTL_IOCTL_ELEM_UNLOCK _IOW('U', 0x15, struct snd_ctl_elem_id)
974#define SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS _IOWR('U', 0x16, int)
975#define SNDRV_CTL_IOCTL_ELEM_ADD _IOWR('U', 0x17, struct snd_ctl_elem_info)
976#define SNDRV_CTL_IOCTL_ELEM_REPLACE _IOWR('U', 0x18, struct snd_ctl_elem_info)
977#define SNDRV_CTL_IOCTL_ELEM_REMOVE _IOWR('U', 0x19, struct snd_ctl_elem_id)
978#define SNDRV_CTL_IOCTL_TLV_READ _IOWR('U', 0x1a, struct snd_ctl_tlv)
979#define SNDRV_CTL_IOCTL_TLV_WRITE _IOWR('U', 0x1b, struct snd_ctl_tlv)
980#define SNDRV_CTL_IOCTL_TLV_COMMAND _IOWR('U', 0x1c, struct snd_ctl_tlv)
981#define SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE _IOWR('U', 0x20, int)
982#define SNDRV_CTL_IOCTL_HWDEP_INFO _IOR('U', 0x21, struct snd_hwdep_info)
983#define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE _IOR('U', 0x30, int)
984#define SNDRV_CTL_IOCTL_PCM_INFO _IOWR('U', 0x31, struct snd_pcm_info)
985#define SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE _IOW('U', 0x32, int)
986#define SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE _IOWR('U', 0x40, int)
987#define SNDRV_CTL_IOCTL_RAWMIDI_INFO _IOWR('U', 0x41, struct snd_rawmidi_info)
988#define SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE _IOW('U', 0x42, int)
989#define SNDRV_CTL_IOCTL_POWER _IOWR('U', 0xd0, int)
990#define SNDRV_CTL_IOCTL_POWER_STATE _IOR('U', 0xd1, int)
991
992/*
993 * Read interface.
994 */
995
996enum sndrv_ctl_event_type {
997 SNDRV_CTL_EVENT_ELEM = 0,
998 SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
999};
1000
1001#define SNDRV_CTL_EVENT_MASK_VALUE (1<<0) /* element value was changed */
1002#define SNDRV_CTL_EVENT_MASK_INFO (1<<1) /* element info was changed */
1003#define SNDRV_CTL_EVENT_MASK_ADD (1<<2) /* element was added */
1004#define SNDRV_CTL_EVENT_MASK_TLV (1<<3) /* element TLV tree was changed */
1005#define SNDRV_CTL_EVENT_MASK_REMOVE (~0U) /* element was removed */
1006
1007struct snd_ctl_event {
1008 int type; /* event type - SNDRV_CTL_EVENT_* */
1009 union {
1010 struct {
1011 unsigned int mask;
1012 struct snd_ctl_elem_id id;
1013 } elem;
1014 unsigned char data8[60];
1015 } data;
1016};
1017
1018/*
1019 * Control names
1020 */
1021
1022#define SNDRV_CTL_NAME_NONE ""
1023#define SNDRV_CTL_NAME_PLAYBACK "Playback "
1024#define SNDRV_CTL_NAME_CAPTURE "Capture "
1025
1026#define SNDRV_CTL_NAME_IEC958_NONE ""
1027#define SNDRV_CTL_NAME_IEC958_SWITCH "Switch"
1028#define SNDRV_CTL_NAME_IEC958_VOLUME "Volume"
1029#define SNDRV_CTL_NAME_IEC958_DEFAULT "Default"
1030#define SNDRV_CTL_NAME_IEC958_MASK "Mask"
1031#define SNDRV_CTL_NAME_IEC958_CON_MASK "Con Mask"
1032#define SNDRV_CTL_NAME_IEC958_PRO_MASK "Pro Mask"
1033#define SNDRV_CTL_NAME_IEC958_PCM_STREAM "PCM Stream"
1034#define SNDRV_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what
1035
1036#endif /* __SOUND_ASOUND_H */
1037

source code of include/sound/asound.h