/*
 * Written 1998 Jens Ch. Restemeier <jchrr@hrz.uni-bielefeld.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 3 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, see <https://www.gnu.org/licenses/>.
 *
 */
#ifndef _FLI_H
#define _FLI_H

/** structures */

typedef struct _fli_header
{
  unsigned long  filesize;
  unsigned short magic;
  unsigned short frames;
  unsigned short width;
  unsigned short height;
  unsigned short depth;
  unsigned short flags;
  unsigned long  speed;
  unsigned long  created;
  unsigned long  creator;
  unsigned long  updated;
  unsigned short aspect_x, aspect_y;
  unsigned long  oframe1, oframe2;
} s_fli_header;

typedef struct _fli_frame
{
  unsigned long  size;
  unsigned short magic;
  unsigned short chunks;
} s_fli_frame;

typedef struct _fli_chunk
{
  unsigned long   size;
  unsigned short  magic;
  unsigned char  *data;
} s_fli_chunk;

/** chunk magics */
#define NO_HEADER       0
#define HEADER_FLI      0xAF11
#define HEADER_FLC      0xAF12
#define FRAME           0xF1FA

/** codec magics */
#define FLI_COLOR       11
#define FLI_BLACK       13
#define FLI_BRUN        15
#define FLI_COPY        16
#define FLI_LC          12
#define FLI_LC_2        7
#define FLI_COLOR_2     4
#define FLI_MINI        18

/** codec masks */
#define W_COLOR         0x0001
#define W_BLACK         0x0002
#define W_BRUN          0x0004
#define W_COPY          0x0008
#define W_LC            0x0010
#define W_LC_2          0x0020
#define W_COLOR_2       0x0040
#define W_MINI          0x0080
#define W_ALL           0xFFFF

/** functions */
void fli_read_header   (FILE          *f,
                        s_fli_header  *fli_header);
void fli_read_frame    (FILE          *f,
                        s_fli_header  *fli_header,
                        unsigned char *old_framebuf,
                        unsigned char *old_cmap,
                        unsigned char *framebuf,
                        unsigned char *cmap);

void fli_read_color    (FILE          *f,
                        s_fli_header  *fli_header,
                        unsigned char *old_cmap,
                        unsigned char *cmap);
void fli_read_color_2  (FILE          *f,
                        s_fli_header  *fli_header,
                        unsigned char *old_cmap,
                        unsigned char *cmap);
void fli_read_black    (FILE          *f,
                        s_fli_header  *fli_header,
                        unsigned char *framebuf);
void fli_read_brun     (FILE          *f,
                        s_fli_header  *fli_header,
                        unsigned char *framebuf);
void fli_read_copy     (FILE          *f,
                        s_fli_header  *fli_header,
                        unsigned char *framebuf);
void fli_read_lc       (FILE          *f,
                        s_fli_header  *fli_header,
                        unsigned char *old_framebuf,
                        unsigned char *framebuf);
void fli_read_lc_2     (FILE          *f,
                        s_fli_header  *fli_header,
                        unsigned char *old_framebuf,
                        unsigned char *framebuf);

void fli_write_header  (FILE          *f,
                        s_fli_header  *fli_header);
void fli_write_frame   (FILE          *f,
                        s_fli_header  *fli_header,
                        unsigned char *old_framebuf,
                        unsigned char *old_cmap,
                        unsigned char *framebuf,
                        unsigned char *cmap,
                        unsigned short codec_mask);

int  fli_write_color   (FILE          *f,
                        s_fli_header  *fli_header,
                        unsigned char *old_cmap,
                        unsigned char *cmap);
int  fli_write_color_2 (FILE          *f,
                        s_fli_header  *fli_header,
                        unsigned char *old_cmap,
                        unsigned char *cmap);
void fli_write_black   (FILE          *f,
                        s_fli_header  *fli_header,
                        unsigned char *framebuf);
void fli_write_brun    (FILE          *f,
                        s_fli_header  *fli_header,
                        unsigned char *framebuf);
void fli_write_copy    (FILE          *f,
                        s_fli_header  *fli_header,
                        unsigned char *framebuf);
void fli_write_lc      (FILE          *f,
                        s_fli_header  *fli_header,
                        unsigned char *old_framebuf,
                        unsigned char *framebuf);
void fli_write_lc_2    (FILE          *f,
                        s_fli_header  *fli_header,
                        unsigned char *old_framebuf,
                        unsigned char *framebuf);

#endif