jedioutcast/CODE-mp/mp3code/mhead.h
2013-04-04 13:01:17 -05:00

102 lines
2.8 KiB
C

#ifndef MHEAD_H
#define MHEAD_H
/*____________________________________________________________________________
FreeAmp - The Free MP3 Player
MP3 Decoder originally Copyright (C) 1995-1997 Xing Technology
Corp. http://www.xingtech.com
Portions Copyright (C) 1998 EMusic.com
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., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id: mhead.h,v 1.3 1999/10/19 07:13:08 elrod Exp $
____________________________________________________________________________*/
/* portable copy of eco\mhead.h */
/* mpeg audio header */
typedef struct
{
int sync; /* 1 if valid sync */
int id;
int option;
int prot;
int br_index;
int sr_index;
int pad;
int private_bit;
int mode;
int mode_ext;
int cr;
int original;
int emphasis;
}
MPEG_HEAD;
/* portable mpeg audio decoder, decoder functions */
#ifndef IN_OUT
#include "small_header.h"
#endif
typedef struct
{
int channels;
int outvalues;
long samprate;
int bits;
int framebytes;
int type;
}
DEC_INFO;
#ifdef __cplusplus
extern "C"
{
#endif
int head_info(unsigned char *buf, unsigned int n, MPEG_HEAD * h);
int head_info2(unsigned char *buf,
unsigned int n, MPEG_HEAD * h, int *br);
int head_info3(unsigned char *buf, unsigned int n, MPEG_HEAD *h, int*br, unsigned int *searchForward);
/* head_info returns framebytes > 0 for success */
/* audio_decode_init returns 1 for success, 0 for fail */
/* audio_decode returns in_bytes = 0 on sync loss */
int audio_decode_init(MPEG_HEAD * h, int framebytes_arg,
int reduction_code, int transform_code, int convert_code,
int freq_limit);
void audio_decode_info(DEC_INFO * info);
IN_OUT audio_decode(unsigned char *bs, short *pcm, unsigned char *pNextByteAfterData);
int audio_decode8_init(MPEG_HEAD * h, int framebytes_arg,
int reduction_code, int transform_code, int convert_code,
int freq_limit);
void audio_decode8_info(DEC_INFO * info);
IN_OUT audio_decode8(unsigned char *bs, short *pcmbuf);
#ifdef __cplusplus
}
#endif
#pragma warning(disable:4711) // function 'xxxx' selected for automatic inline expansion
#endif // #ifndef MHEAD_H