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/*
* madplay - MPEG audio decoder and player
* Copyright (C) 2000-2004 Robert Leslie
*
* 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
*
* $Id: rgain.h,v 1.1 2004/02/23 21:34:53 rob Exp $
*/
# ifndef RGAIN_H
# define RGAIN_H
# include <mad.h>
# define RGAIN_REFERENCE 83 /* reference level (dB SPL) */
enum rgain_name {
RGAIN_NAME_NOT_SET = 0x0,
RGAIN_NAME_RADIO = 0x1,
RGAIN_NAME_AUDIOPHILE = 0x2
};
enum rgain_originator {
RGAIN_ORIGINATOR_UNSPECIFIED = 0x0,
RGAIN_ORIGINATOR_PRESET = 0x1,
RGAIN_ORIGINATOR_USER = 0x2,
RGAIN_ORIGINATOR_AUTOMATIC = 0x3
};
struct rgain {
enum rgain_name name; /* profile (see above) */
enum rgain_originator originator; /* source (see above) */
signed short adjustment; /* in units of 0.1 dB */
};
# define RGAIN_SET(rgain) ((rgain)->name != RGAIN_NAME_NOT_SET)
# define RGAIN_VALID(rgain) \
(((rgain)->name == RGAIN_NAME_RADIO || \
(rgain)->name == RGAIN_NAME_AUDIOPHILE) && \
(rgain)->originator != RGAIN_ORIGINATOR_UNSPECIFIED)
# define RGAIN_DB(rgain) ((rgain)->adjustment / 10.0)
void rgain_parse(struct rgain *, struct mad_bitptr *);
char const *rgain_originator(struct rgain const *);
# endif
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