linux/include/uapi/sound/tlv.h
<<
>>
Prefs
   1/*
   2 *   This program is free software; you can redistribute it and/or modify
   3 *   it under the terms of the GNU General Public License as published by
   4 *   the Free Software Foundation; either version 2 of the License, or
   5 *   (at your option) any later version.
   6 *
   7 *   This program is distributed in the hope that it will be useful,
   8 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   9 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10 *   GNU General Public License for more details.
  11 */
  12
  13#ifndef __UAPI_SOUND_TLV_H
  14#define __UAPI_SOUND_TLV_H
  15
  16#define SNDRV_CTL_TLVT_CONTAINER 0      /* one level down - group of TLVs */
  17#define SNDRV_CTL_TLVT_DB_SCALE 1       /* dB scale */
  18#define SNDRV_CTL_TLVT_DB_LINEAR 2      /* linear volume */
  19#define SNDRV_CTL_TLVT_DB_RANGE 3       /* dB range container */
  20#define SNDRV_CTL_TLVT_DB_MINMAX 4      /* dB scale with min/max */
  21#define SNDRV_CTL_TLVT_DB_MINMAX_MUTE 5 /* dB scale with min/max with mute */
  22
  23/*
  24 * channel-mapping TLV items
  25 *  TLV length must match with num_channels
  26 */
  27#define SNDRV_CTL_TLVT_CHMAP_FIXED      0x101   /* fixed channel position */
  28#define SNDRV_CTL_TLVT_CHMAP_VAR        0x102   /* channels freely swappable */
  29#define SNDRV_CTL_TLVT_CHMAP_PAIRED     0x103   /* pair-wise swappable */
  30
  31#endif
  32