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1#ifndef __SOUND_TLV_H
2#define __SOUND_TLV_H
3
4/*
5 * Advanced Linux Sound Architecture - ALSA - Driver
6 * Copyright (c) 2006 by Jaroslav Kysela <perex@perex.cz>
7 *
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 */
24
25/*
26 * TLV structure is right behind the struct snd_ctl_tlv:
27 * unsigned int type - see SNDRV_CTL_TLVT_*
28 * unsigned int length
29 * .... data aligned to sizeof(unsigned int), use
30 * block_length = (length + (sizeof(unsigned int) - 1)) &
31 * ~(sizeof(unsigned int) - 1)) ....
32 */
33
34#define SNDRV_CTL_TLVT_CONTAINER 0 /* one level down - group of TLVs */
35#define SNDRV_CTL_TLVT_DB_SCALE 1 /* dB scale */
36#define SNDRV_CTL_TLVT_DB_LINEAR 2 /* linear volume */
37#define SNDRV_CTL_TLVT_DB_RANGE 3 /* dB range container */
38#define SNDRV_CTL_TLVT_DB_MINMAX 4 /* dB scale with min/max */
39#define SNDRV_CTL_TLVT_DB_MINMAX_MUTE 5 /* dB scale with min/max with mute */
40
41#define TLV_DB_SCALE_MASK 0xffff
42#define TLV_DB_SCALE_MUTE 0x10000
43#define TLV_DB_SCALE_ITEM(min, step, mute) \
44 SNDRV_CTL_TLVT_DB_SCALE, 2 * sizeof(unsigned int), \
45 (min), ((step) & TLV_DB_SCALE_MASK) | ((mute) ? TLV_DB_SCALE_MUTE : 0)
46#define DECLARE_TLV_DB_SCALE(name, min, step, mute) \
47 unsigned int name[] = { TLV_DB_SCALE_ITEM(min, step, mute) }
48
49/* dB scale specified with min/max values instead of step */
50#define TLV_DB_MINMAX_ITEM(min_dB, max_dB) \
51 SNDRV_CTL_TLVT_DB_MINMAX, 2 * sizeof(unsigned int), \
52 (min_dB), (max_dB)
53#define TLV_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) \
54 SNDRV_CTL_TLVT_DB_MINMAX_MUTE, 2 * sizeof(unsigned int), \
55 (min_dB), (max_dB)
56#define DECLARE_TLV_DB_MINMAX(name, min_dB, max_dB) \
57 unsigned int name[] = { TLV_DB_MINMAX_ITEM(min_dB, max_dB) }
58#define DECLARE_TLV_DB_MINMAX_MUTE(name, min_dB, max_dB) \
59 unsigned int name[] = { TLV_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) }
60
61/* linear volume between min_dB and max_dB (.01dB unit) */
62#define TLV_DB_LINEAR_ITEM(min_dB, max_dB) \
63 SNDRV_CTL_TLVT_DB_LINEAR, 2 * sizeof(unsigned int), \
64 (min_dB), (max_dB)
65#define DECLARE_TLV_DB_LINEAR(name, min_dB, max_dB) \
66 unsigned int name[] = { TLV_DB_LINEAR_ITEM(min_dB, max_dB) }
67
68/* dB range container */
69/* Each item is: <min> <max> <TLV> */
70/* The below assumes that each item TLV is 4 words like DB_SCALE or LINEAR */
71#define TLV_DB_RANGE_HEAD(num) \
72 SNDRV_CTL_TLVT_DB_RANGE, 6 * (num) * sizeof(unsigned int)
73
74#define TLV_DB_GAIN_MUTE -9999999
75
76#endif /* __SOUND_TLV_H */
1#ifndef __SOUND_TLV_H
2#define __SOUND_TLV_H
3
4/*
5 * Advanced Linux Sound Architecture - ALSA - Driver
6 * Copyright (c) 2006 by Jaroslav Kysela <perex@perex.cz>
7 *
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 */
24
25/*
26 * TLV structure is right behind the struct snd_ctl_tlv:
27 * unsigned int type - see SNDRV_CTL_TLVT_*
28 * unsigned int length
29 * .... data aligned to sizeof(unsigned int), use
30 * block_length = (length + (sizeof(unsigned int) - 1)) &
31 * ~(sizeof(unsigned int) - 1)) ....
32 */
33
34#include <uapi/sound/tlv.h>
35
36#define TLV_ITEM(type, ...) \
37 (type), TLV_LENGTH(__VA_ARGS__), __VA_ARGS__
38#define TLV_LENGTH(...) \
39 ((unsigned int)sizeof((const unsigned int[]) { __VA_ARGS__ }))
40
41#define TLV_CONTAINER_ITEM(...) \
42 TLV_ITEM(SNDRV_CTL_TLVT_CONTAINER, __VA_ARGS__)
43#define DECLARE_TLV_CONTAINER(name, ...) \
44 unsigned int name[] = { TLV_CONTAINER_ITEM(__VA_ARGS__) }
45
46#define TLV_DB_SCALE_MASK 0xffff
47#define TLV_DB_SCALE_MUTE 0x10000
48#define TLV_DB_SCALE_ITEM(min, step, mute) \
49 TLV_ITEM(SNDRV_CTL_TLVT_DB_SCALE, \
50 (min), \
51 ((step) & TLV_DB_SCALE_MASK) | \
52 ((mute) ? TLV_DB_SCALE_MUTE : 0))
53#define DECLARE_TLV_DB_SCALE(name, min, step, mute) \
54 unsigned int name[] = { TLV_DB_SCALE_ITEM(min, step, mute) }
55
56/* dB scale specified with min/max values instead of step */
57#define TLV_DB_MINMAX_ITEM(min_dB, max_dB) \
58 TLV_ITEM(SNDRV_CTL_TLVT_DB_MINMAX, (min_dB), (max_dB))
59#define TLV_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) \
60 TLV_ITEM(SNDRV_CTL_TLVT_DB_MINMAX_MUTE, (min_dB), (max_dB))
61#define DECLARE_TLV_DB_MINMAX(name, min_dB, max_dB) \
62 unsigned int name[] = { TLV_DB_MINMAX_ITEM(min_dB, max_dB) }
63#define DECLARE_TLV_DB_MINMAX_MUTE(name, min_dB, max_dB) \
64 unsigned int name[] = { TLV_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) }
65
66/* linear volume between min_dB and max_dB (.01dB unit) */
67#define TLV_DB_LINEAR_ITEM(min_dB, max_dB) \
68 TLV_ITEM(SNDRV_CTL_TLVT_DB_LINEAR, (min_dB), (max_dB))
69#define DECLARE_TLV_DB_LINEAR(name, min_dB, max_dB) \
70 unsigned int name[] = { TLV_DB_LINEAR_ITEM(min_dB, max_dB) }
71
72/* dB range container:
73 * Items in dB range container must be ordered by their values and by their
74 * dB values. This implies that larger values must correspond with larger
75 * dB values (which is also required for all other mixer controls).
76 */
77/* Each item is: <min> <max> <TLV> */
78#define TLV_DB_RANGE_ITEM(...) \
79 TLV_ITEM(SNDRV_CTL_TLVT_DB_RANGE, __VA_ARGS__)
80#define DECLARE_TLV_DB_RANGE(name, ...) \
81 unsigned int name[] = { TLV_DB_RANGE_ITEM(__VA_ARGS__) }
82/* The below assumes that each item TLV is 4 words like DB_SCALE or LINEAR */
83#define TLV_DB_RANGE_HEAD(num) \
84 SNDRV_CTL_TLVT_DB_RANGE, 6 * (num) * sizeof(unsigned int)
85
86#define TLV_DB_GAIN_MUTE -9999999
87
88#endif /* __SOUND_TLV_H */