mirror of
https://git.code.sf.net/p/quake/newtree
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108 lines
2.4 KiB
C
108 lines
2.4 KiB
C
/*
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pcx.c
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pcx image handling
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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$Id$
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "console.h"
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#include "pcx.h"
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#include "qendian.h"
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#include "qtypes.h"
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#include "quakefs.h"
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byte *pcx_rgb;
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/*
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LoadPCX
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*/
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void
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LoadPCX (QFile *f)
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{
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pcx_t *pcx, pcxbuf;
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byte palette[768];
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byte *pix;
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int x, y;
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int dataByte, runLength;
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int count;
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//
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// parse the PCX file
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//
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Qread (f, &pcxbuf, sizeof (pcxbuf));
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pcx = &pcxbuf;
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pcx->xmax = LittleShort (pcx->xmax);
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pcx->xmin = LittleShort (pcx->xmin);
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pcx->ymax = LittleShort (pcx->ymax);
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pcx->ymin = LittleShort (pcx->ymin);
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pcx->hres = LittleShort (pcx->hres);
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pcx->vres = LittleShort (pcx->vres);
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pcx->bytes_per_line = LittleShort (pcx->bytes_per_line);
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pcx->palette_type = LittleShort (pcx->palette_type);
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if (pcx->manufacturer != 0x0a
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|| pcx->version != 5
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|| pcx->encoding != 1
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|| pcx->bits_per_pixel != 8 || pcx->xmax >= 320 || pcx->ymax >= 256) {
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Con_Printf ("Bad pcx file\n");
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return;
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}
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// seek to palette
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Qseek (f, -768, SEEK_END);
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Qread (f, palette, 768);
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Qseek (f, sizeof (pcxbuf) - 4, SEEK_SET);
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count = (pcx->xmax + 1) * (pcx->ymax + 1);
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pcx_rgb = malloc (count * 4);
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for (y = 0; y <= pcx->ymax; y++) {
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pix = pcx_rgb + 4 * y * (pcx->xmax + 1);
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for (x = 0; x <= pcx->ymax;) {
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dataByte = Qgetc (f);
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if ((dataByte & 0xC0) == 0xC0) {
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runLength = dataByte & 0x3F;
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dataByte = Qgetc (f);
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} else {
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runLength = 1;
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}
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while (runLength-- > 0) {
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pix[0] = palette[dataByte * 3];
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pix[1] = palette[dataByte * 3 + 1];
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pix[2] = palette[dataByte * 3 + 2];
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pix[3] = 255;
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pix += 4;
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x++;
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}
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}
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}
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}
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