Root/
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_ITEM(type, ...) \ |
42 | (type), TLV_LENGTH(__VA_ARGS__), __VA_ARGS__ |
43 | #define TLV_LENGTH(...) \ |
44 | ((unsigned int)sizeof((const unsigned int[]) { __VA_ARGS__ })) |
45 | |
46 | #define TLV_CONTAINER_ITEM(...) \ |
47 | TLV_ITEM(SNDRV_CTL_TLVT_CONTAINER, __VA_ARGS__) |
48 | #define DECLARE_TLV_CONTAINER(name, ...) \ |
49 | unsigned int name[] = { TLV_CONTAINER_ITEM(__VA_ARGS__) } |
50 | |
51 | #define TLV_DB_SCALE_MASK 0xffff |
52 | #define TLV_DB_SCALE_MUTE 0x10000 |
53 | #define TLV_DB_SCALE_ITEM(min, step, mute) \ |
54 | TLV_ITEM(SNDRV_CTL_TLVT_DB_SCALE, \ |
55 | (min), \ |
56 | ((step) & TLV_DB_SCALE_MASK) | \ |
57 | ((mute) ? TLV_DB_SCALE_MUTE : 0)) |
58 | #define DECLARE_TLV_DB_SCALE(name, min, step, mute) \ |
59 | unsigned int name[] = { TLV_DB_SCALE_ITEM(min, step, mute) } |
60 | |
61 | /* dB scale specified with min/max values instead of step */ |
62 | #define TLV_DB_MINMAX_ITEM(min_dB, max_dB) \ |
63 | TLV_ITEM(SNDRV_CTL_TLVT_DB_MINMAX, (min_dB), (max_dB)) |
64 | #define TLV_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) \ |
65 | TLV_ITEM(SNDRV_CTL_TLVT_DB_MINMAX_MUTE, (min_dB), (max_dB)) |
66 | #define DECLARE_TLV_DB_MINMAX(name, min_dB, max_dB) \ |
67 | unsigned int name[] = { TLV_DB_MINMAX_ITEM(min_dB, max_dB) } |
68 | #define DECLARE_TLV_DB_MINMAX_MUTE(name, min_dB, max_dB) \ |
69 | unsigned int name[] = { TLV_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) } |
70 | |
71 | /* linear volume between min_dB and max_dB (.01dB unit) */ |
72 | #define TLV_DB_LINEAR_ITEM(min_dB, max_dB) \ |
73 | TLV_ITEM(SNDRV_CTL_TLVT_DB_LINEAR, (min_dB), (max_dB)) |
74 | #define DECLARE_TLV_DB_LINEAR(name, min_dB, max_dB) \ |
75 | unsigned int name[] = { TLV_DB_LINEAR_ITEM(min_dB, max_dB) } |
76 | |
77 | /* dB range container: |
78 | * Items in dB range container must be ordered by their values and by their |
79 | * dB values. This implies that larger values must correspond with larger |
80 | * dB values (which is also required for all other mixer controls). |
81 | */ |
82 | /* Each item is: <min> <max> <TLV> */ |
83 | #define TLV_DB_RANGE_ITEM(...) \ |
84 | TLV_ITEM(SNDRV_CTL_TLVT_DB_RANGE, __VA_ARGS__) |
85 | #define DECLARE_TLV_DB_RANGE(name, ...) \ |
86 | unsigned int name[] = { TLV_DB_RANGE_ITEM(__VA_ARGS__) } |
87 | /* The below assumes that each item TLV is 4 words like DB_SCALE or LINEAR */ |
88 | #define TLV_DB_RANGE_HEAD(num) \ |
89 | SNDRV_CTL_TLVT_DB_RANGE, 6 * (num) * sizeof(unsigned int) |
90 | |
91 | #define TLV_DB_GAIN_MUTE -9999999 |
92 | |
93 | /* |
94 | * channel-mapping TLV items |
95 | * TLV length must match with num_channels |
96 | */ |
97 | #define SNDRV_CTL_TLVT_CHMAP_FIXED 0x101 /* fixed channel position */ |
98 | #define SNDRV_CTL_TLVT_CHMAP_VAR 0x102 /* channels freely swappable */ |
99 | #define SNDRV_CTL_TLVT_CHMAP_PAIRED 0x103 /* pair-wise swappable */ |
100 | |
101 | #endif /* __SOUND_TLV_H */ |
102 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9