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/* $Id: bs.h,v 1.2 2002-06-23 11:19:06 Pixel Exp $ */
/*
libbs - library for the bitstream image format
Copyright (C) 1999, 2000 by these people, who contributed to this project
bero@geocities.co.jp
Daniel Balster <dbalster@psxdev.de>
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.
*/
/*
DCT code is based on Independent JPEG Group's sotfware
*/
#ifndef __LIB_BS_H
#define __LIB_BS_H
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <sys/types.h>
#include <stdarg.h>
typedef struct {
int width,height;
int bit;
int nextline;
unsigned char *top,*lpbits;
} bs_input_image_t;
#define BS_MAGIC 0x3800
#define BS_TYPE 2
typedef struct {
u_short length;
u_short magic;
u_short q_scale;
u_short type;
} bs_header_t;
/* prototypes */
#ifdef __cplusplus
extern "C" {
#endif
void bs_init (void);
int bs_encode ( /* returns BS image size in bytes */
bs_header_t *outbuf, /* output BS image */
bs_input_image_t *img, /* input image descriptor */
int type, /* image type (use BS_TYPE) */
int q_scale, /* Q scaling factor (1=best,>= lower quality) */
const unsigned char *myiqtab /* provide own iqtab (NULL == default) */
);
void bs_decode_rgb24 (
unsigned char *outbuf, /* output RGB bytes (width*height*3) */
bs_header_t *img, /* input BS image */
int width, int height, /* dimension of BS image */
const unsigned char *myiqtab
);
void bs_decode_rgb15 (
unsigned short *outbuf, /* output RGB bytes (width*height*2) */
bs_header_t *img, /* input BS image */
int width, int height, /* dimension of BS image */
const unsigned char *myiqtab
);
const unsigned char *bs_iqtab (void);
#ifdef __cplusplus
}
#endif
#endif /* __LIB_BS_H */
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