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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 | ||
34 | #define SNDRV_CTL_TLVT_CONTAINER 0 /* one level down - group of TLVs */ | |
35 | #define SNDRV_CTL_TLVT_DB_SCALE 1 /* dB scale */ | |
063a40d9 | 36 | #define SNDRV_CTL_TLVT_DB_LINEAR 2 /* linear volume */ |
55a29af5 | 37 | #define SNDRV_CTL_TLVT_DB_RANGE 3 /* dB range container */ |
085f3065 TI |
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 */ | |
42750b04 | 40 | |
b5b9eb54 CL |
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 | ||
570aef5d CL |
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 | ||
c08d9169 TI |
51 | #define TLV_DB_SCALE_MASK 0xffff |
52 | #define TLV_DB_SCALE_MUTE 0x10000 | |
55a29af5 | 53 | #define TLV_DB_SCALE_ITEM(min, step, mute) \ |
b5b9eb54 CL |
54 | TLV_ITEM(SNDRV_CTL_TLVT_DB_SCALE, \ |
55 | (min), \ | |
56 | ((step) & TLV_DB_SCALE_MASK) | \ | |
57 | ((mute) ? TLV_DB_SCALE_MUTE : 0)) | |
42750b04 | 58 | #define DECLARE_TLV_DB_SCALE(name, min, step, mute) \ |
55a29af5 | 59 | unsigned int name[] = { TLV_DB_SCALE_ITEM(min, step, mute) } |
42750b04 | 60 | |
085f3065 TI |
61 | /* dB scale specified with min/max values instead of step */ |
62 | #define TLV_DB_MINMAX_ITEM(min_dB, max_dB) \ | |
b5b9eb54 | 63 | TLV_ITEM(SNDRV_CTL_TLVT_DB_MINMAX, (min_dB), (max_dB)) |
085f3065 | 64 | #define TLV_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) \ |
b5b9eb54 | 65 | TLV_ITEM(SNDRV_CTL_TLVT_DB_MINMAX_MUTE, (min_dB), (max_dB)) |
085f3065 TI |
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 | ||
063a40d9 | 71 | /* linear volume between min_dB and max_dB (.01dB unit) */ |
55a29af5 | 72 | #define TLV_DB_LINEAR_ITEM(min_dB, max_dB) \ |
b5b9eb54 | 73 | TLV_ITEM(SNDRV_CTL_TLVT_DB_LINEAR, (min_dB), (max_dB)) |
063a40d9 | 74 | #define DECLARE_TLV_DB_LINEAR(name, min_dB, max_dB) \ |
55a29af5 TI |
75 | unsigned int name[] = { TLV_DB_LINEAR_ITEM(min_dB, max_dB) } |
76 | ||
77 | /* dB range container */ | |
78 | /* Each item is: <min> <max> <TLV> */ | |
bf1d1c9b CL |
79 | #define TLV_DB_RANGE_ITEM(...) \ |
80 | TLV_ITEM(SNDRV_CTL_TLVT_DB_RANGE, __VA_ARGS__) | |
81 | #define DECLARE_TLV_DB_RANGE(name, ...) \ | |
82 | unsigned int name[] = { TLV_DB_RANGE_ITEM(__VA_ARGS__) } | |
55a29af5 TI |
83 | /* The below assumes that each item TLV is 4 words like DB_SCALE or LINEAR */ |
84 | #define TLV_DB_RANGE_HEAD(num) \ | |
85 | SNDRV_CTL_TLVT_DB_RANGE, 6 * (num) * sizeof(unsigned int) | |
063a40d9 TI |
86 | |
87 | #define TLV_DB_GAIN_MUTE -9999999 | |
88 | ||
2d3391ec TI |
89 | /* |
90 | * channel-mapping TLV items | |
91 | * TLV length must match with num_channels | |
92 | */ | |
93 | #define SNDRV_CTL_TLVT_CHMAP_FIXED 0x101 /* fixed channel position */ | |
94 | #define SNDRV_CTL_TLVT_CHMAP_VAR 0x102 /* channels freely swappable */ | |
95 | #define SNDRV_CTL_TLVT_CHMAP_PAIRED 0x103 /* pair-wise swappable */ | |
96 | ||
42750b04 | 97 | #endif /* __SOUND_TLV_H */ |