6663b6c9
 adorian
projet complet av...
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/*
** Nofrendo (c) 1998-2000 Matthew Conte (matt@conte.com)
**
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of version 2 of the GNU Library General
** Public License as published by the Free Software Foundation.
**
** 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
** Library General Public License for more details. To obtain a
** copy of the GNU Library General Public License, write to the Free
** Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**
** Any permitted reproduction of these routines, in whole or in part,
** must bear this legend.
**
**
** pcx.c
**
** PCX format screen-saving routines
** $Id: pcx.c,v 1.2 2001/04/27 14:37:11 neil Exp $
*/
#include <stdio.h>
#include <string.h>
#include <noftypes.h>
#include <bitmap.h>
#include <pcx.h>
/* Save a PCX snapshot from a given NES bitmap */
int pcx_write(char *filename, bitmap_t *bmp, rgb_t *pal)
{
FILE *fp;
pcxheader_t header;
int i, line;
int width, height, x_min, y_min;
ASSERT(bmp);
width = bmp->width;
height = bmp->height;
x_min = 0;
y_min = 0;
fp = fopen(filename, "wb");
if (NULL == fp)
return -1;
/* Fill in the header nonsense */
memset(&header, 0, sizeof(header));
header.Manufacturer = 10;
header.Version = 5;
header.Encoding = 1;
header.BitsPerPixel = 8;
header.Xmin = x_min;
header.Ymin = y_min;
header.Xmax = width - 1;
header.Ymax = height - 1;
header.NPlanes = 1;
header.BytesPerLine = width;
header.PaletteInfo = 1;
header.HscreenSize = width - 1;
header.VscreenSize = height - 1;
fwrite(&header, 1, sizeof(header), fp);
/* RLE encoding */
for (line = 0; line < height; line++)
{
uint8 last, *mem;
int xpos = 0;
mem = bmp->line[line + y_min] + x_min;
while (xpos < width)
{
int rle_count = 0;
do
{
last = *mem++;
xpos++;
rle_count++;
}
while (*mem == last && xpos < width && rle_count < 0x3F);
if (rle_count > 1 || 0xC0 == (last & 0xC0))
{
fputc(0xC0 | rle_count, fp);
fputc(last, fp);
}
else
{
fputc(last, fp);
}
}
}
/* Write palette */
fputc(0x0C, fp); /* $0C signifies 256 color palette */
for (i = 0; i < 256; i++)
{
fputc(pal[i].r, fp);
fputc(pal[i].g, fp);
fputc(pal[i].b, fp);
}
/* We're done! */
fclose(fp);
return 0;
}
/*
** $Log: pcx.c,v $
** Revision 1.2 2001/04/27 14:37:11 neil
** wheeee
**
** Revision 1.1.1.1 2001/04/27 07:03:54 neil
** initial
**
** Revision 1.8 2000/11/06 05:17:48 matt
** better!
**
** Revision 1.7 2000/11/05 16:37:18 matt
** rolled rgb.h into bitmap.h
**
** Revision 1.6 2000/07/17 01:52:27 matt
** made sure last line of all source files is a newline
**
** Revision 1.5 2000/06/26 04:55:13 matt
** changed routine name, big whoop
**
** Revision 1.4 2000/06/09 15:12:25 matt
** initial revision
**
*/
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