adx.h

mediastreamer2是开源的网络传输媒体流的库

/*
 * ADX ADPCM codecs
 * Copyright (c) 2001,2003 BERO
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file adx.h
 * SEGA CRI adx codecs.
 *
 * Reference documents:
 * http://ku-www.ss.titech.ac.jp/~yatsushi/adx.html
 * adx2wav & wav2adx http://www.geocities.co.jp/Playtown/2004/
 */

#ifndef FFMPEG_ADX_H
#define FFMPEG_ADX_H

typedef struct {
    int s1,s2;
} PREV;

typedef struct {
    PREV prev[2];
    int header_parsed;
    unsigned char dec_temp[18*2];
    int in_temp;
} ADXContext;

#define    BASEVOL   0x4000
#define    SCALE1    0x7298
#define    SCALE2    0x3350

#endif /* FFMPEG_ADX_H */