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42750b04 JK |
1 | #ifndef __SOUND_TLV_H |
2 | #define __SOUND_TLV_H | |
3 | ||
4 | /* | |
5 | * Advanced Linux Sound Architecture - ALSA - Driver | |
c1017a4c | 6 | * Copyright (c) 2006 by Jaroslav Kysela <perex@perex.cz> |
42750b04 JK |
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 | ||
932ae880 | 34 | #include <uapi/sound/tlv.h> |
42750b04 | 35 | |
b5b9eb54 CL |
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 | ||
570aef5d CL |
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 | ||
c08d9169 TI |
46 | #define TLV_DB_SCALE_MASK 0xffff |
47 | #define TLV_DB_SCALE_MUTE 0x10000 | |
55a29af5 | 48 | #define TLV_DB_SCALE_ITEM(min, step, mute) \ |
b5b9eb54 CL |
49 | TLV_ITEM(SNDRV_CTL_TLVT_DB_SCALE, \ |
50 | (min), \ | |
51 | ((step) & TLV_DB_SCALE_MASK) | \ | |
52 | ((mute) ? TLV_DB_SCALE_MUTE : 0)) | |
42750b04 | 53 | #define DECLARE_TLV_DB_SCALE(name, min, step, mute) \ |
55a29af5 | 54 | unsigned int name[] = { TLV_DB_SCALE_ITEM(min, step, mute) } |
42750b04 | 55 | |
085f3065 TI |
56 | /* dB scale specified with min/max values instead of step */ |
57 | #define TLV_DB_MINMAX_ITEM(min_dB, max_dB) \ | |
b5b9eb54 | 58 | TLV_ITEM(SNDRV_CTL_TLVT_DB_MINMAX, (min_dB), (max_dB)) |
085f3065 | 59 | #define TLV_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) \ |
b5b9eb54 | 60 | TLV_ITEM(SNDRV_CTL_TLVT_DB_MINMAX_MUTE, (min_dB), (max_dB)) |
085f3065 TI |
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 | ||
063a40d9 | 66 | /* linear volume between min_dB and max_dB (.01dB unit) */ |
55a29af5 | 67 | #define TLV_DB_LINEAR_ITEM(min_dB, max_dB) \ |
b5b9eb54 | 68 | TLV_ITEM(SNDRV_CTL_TLVT_DB_LINEAR, (min_dB), (max_dB)) |
063a40d9 | 69 | #define DECLARE_TLV_DB_LINEAR(name, min_dB, max_dB) \ |
55a29af5 TI |
70 | unsigned int name[] = { TLV_DB_LINEAR_ITEM(min_dB, max_dB) } |
71 | ||
d24f5a9a DH |
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 | */ | |
55a29af5 | 77 | /* Each item is: <min> <max> <TLV> */ |
bf1d1c9b CL |
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__) } | |
55a29af5 TI |
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) | |
063a40d9 TI |
85 | |
86 | #define TLV_DB_GAIN_MUTE -9999999 | |
87 | ||
42750b04 | 88 | #endif /* __SOUND_TLV_H */ |