103 lines
2.8 KiB
C
103 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
|
||
|
|
|