| #ifndef __SOUND_TLV_H |
| #define __SOUND_TLV_H |
| |
| /* |
| * Advanced Linux Sound Architecture - ALSA - Driver |
| * Copyright (c) 2006 by Jaroslav Kysela <perex@suse.cz> |
| * |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| */ |
| |
| /* |
| * TLV structure is right behind the struct snd_ctl_tlv: |
| * unsigned int type - see SNDRV_CTL_TLVT_* |
| * unsigned int length |
| * .... data aligned to sizeof(unsigned int), use |
| * block_length = (length + (sizeof(unsigned int) - 1)) & |
| * ~(sizeof(unsigned int) - 1)) .... |
| */ |
| |
| #define SNDRV_CTL_TLVT_CONTAINER 0 /* one level down - group of TLVs */ |
| #define SNDRV_CTL_TLVT_DB_SCALE 1 /* dB scale */ |
| |
| #define DECLARE_TLV_DB_SCALE(name, min, step, mute) \ |
| unsigned int name[] = { \ |
| SNDRV_CTL_TLVT_DB_SCALE, 2 * sizeof(unsigned int), \ |
| (min), ((step) & 0xffff) | ((mute) ? 0x10000 : 0) \ |
| } |
| |
| #endif /* __SOUND_TLV_H */ |
