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117 lines
4.5 KiB
117 lines
4.5 KiB
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
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/* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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*/ |
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#ifndef __UAPI_SOUND_TLV_H |
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#define __UAPI_SOUND_TLV_H |
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#define SNDRV_CTL_TLVT_CONTAINER 0 /* one level down - group of TLVs */ |
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#define SNDRV_CTL_TLVT_DB_SCALE 1 /* dB scale */ |
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#define SNDRV_CTL_TLVT_DB_LINEAR 2 /* linear volume */ |
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#define SNDRV_CTL_TLVT_DB_RANGE 3 /* dB range container */ |
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#define SNDRV_CTL_TLVT_DB_MINMAX 4 /* dB scale with min/max */ |
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#define SNDRV_CTL_TLVT_DB_MINMAX_MUTE 5 /* dB scale with min/max with mute */ |
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/* |
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* channel-mapping TLV items |
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* TLV length must match with num_channels |
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*/ |
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#define SNDRV_CTL_TLVT_CHMAP_FIXED 0x101 /* fixed channel position */ |
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#define SNDRV_CTL_TLVT_CHMAP_VAR 0x102 /* channels freely swappable */ |
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#define SNDRV_CTL_TLVT_CHMAP_PAIRED 0x103 /* pair-wise swappable */ |
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/* |
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* TLV structure is right behind the struct snd_ctl_tlv: |
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* unsigned int type - see SNDRV_CTL_TLVT_* |
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* unsigned int length |
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* .... data aligned to sizeof(unsigned int), use |
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* block_length = (length + (sizeof(unsigned int) - 1)) & |
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* ~(sizeof(unsigned int) - 1)) .... |
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*/ |
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#define SNDRV_CTL_TLVD_ITEM(type, ...) \ |
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(type), SNDRV_CTL_TLVD_LENGTH(__VA_ARGS__), __VA_ARGS__ |
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#define SNDRV_CTL_TLVD_LENGTH(...) \ |
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((unsigned int)sizeof((const unsigned int[]) { __VA_ARGS__ })) |
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/* Accessor offsets for TLV data items */ |
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#define SNDRV_CTL_TLVO_TYPE 0 |
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#define SNDRV_CTL_TLVO_LEN 1 |
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#define SNDRV_CTL_TLVD_CONTAINER_ITEM(...) \ |
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SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_CONTAINER, __VA_ARGS__) |
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#define SNDRV_CTL_TLVD_DECLARE_CONTAINER(name, ...) \ |
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unsigned int name[] = { \ |
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SNDRV_CTL_TLVD_CONTAINER_ITEM(__VA_ARGS__) \ |
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} |
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#define SNDRV_CTL_TLVD_DB_SCALE_MASK 0xffff |
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#define SNDRV_CTL_TLVD_DB_SCALE_MUTE 0x10000 |
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#define SNDRV_CTL_TLVD_DB_SCALE_ITEM(min, step, mute) \ |
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SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_SCALE, \ |
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(min), \ |
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((step) & SNDRV_CTL_TLVD_DB_SCALE_MASK) | \ |
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((mute) ? SNDRV_CTL_TLVD_DB_SCALE_MUTE : 0)) |
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#define SNDRV_CTL_TLVD_DECLARE_DB_SCALE(name, min, step, mute) \ |
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unsigned int name[] = { \ |
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SNDRV_CTL_TLVD_DB_SCALE_ITEM(min, step, mute) \ |
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} |
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/* Accessor offsets for min, mute and step items in dB scale type TLV */ |
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#define SNDRV_CTL_TLVO_DB_SCALE_MIN 2 |
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#define SNDRV_CTL_TLVO_DB_SCALE_MUTE_AND_STEP 3 |
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/* dB scale specified with min/max values instead of step */ |
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#define SNDRV_CTL_TLVD_DB_MINMAX_ITEM(min_dB, max_dB) \ |
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SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_MINMAX, (min_dB), (max_dB)) |
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#define SNDRV_CTL_TLVD_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) \ |
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SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_MINMAX_MUTE, (min_dB), (max_dB)) |
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#define SNDRV_CTL_TLVD_DECLARE_DB_MINMAX(name, min_dB, max_dB) \ |
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unsigned int name[] = { \ |
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SNDRV_CTL_TLVD_DB_MINMAX_ITEM(min_dB, max_dB) \ |
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} |
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#define SNDRV_CTL_TLVD_DECLARE_DB_MINMAX_MUTE(name, min_dB, max_dB) \ |
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unsigned int name[] = { \ |
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SNDRV_CTL_TLVD_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) \ |
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} |
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/* Accessor offsets for min, max items in db-minmax types of TLV. */ |
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#define SNDRV_CTL_TLVO_DB_MINMAX_MIN 2 |
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#define SNDRV_CTL_TLVO_DB_MINMAX_MAX 3 |
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/* linear volume between min_dB and max_dB (.01dB unit) */ |
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#define SNDRV_CTL_TLVD_DB_LINEAR_ITEM(min_dB, max_dB) \ |
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SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_LINEAR, (min_dB), (max_dB)) |
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#define SNDRV_CTL_TLVD_DECLARE_DB_LINEAR(name, min_dB, max_dB) \ |
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unsigned int name[] = { \ |
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SNDRV_CTL_TLVD_DB_LINEAR_ITEM(min_dB, max_dB) \ |
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} |
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/* Accessor offsets for min, max items in db-linear type of TLV. */ |
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#define SNDRV_CTL_TLVO_DB_LINEAR_MIN 2 |
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#define SNDRV_CTL_TLVO_DB_LINEAR_MAX 3 |
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/* dB range container: |
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* Items in dB range container must be ordered by their values and by their |
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* dB values. This implies that larger values must correspond with larger |
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* dB values (which is also required for all other mixer controls). |
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*/ |
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/* Each item is: <min> <max> <TLV> */ |
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#define SNDRV_CTL_TLVD_DB_RANGE_ITEM(...) \ |
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SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_RANGE, __VA_ARGS__) |
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#define SNDRV_CTL_TLVD_DECLARE_DB_RANGE(name, ...) \ |
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unsigned int name[] = { \ |
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SNDRV_CTL_TLVD_DB_RANGE_ITEM(__VA_ARGS__) \ |
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} |
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#define SNDRV_CTL_TLVD_DB_GAIN_MUTE -9999999 |
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#endif
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