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98 lines
1.9 KiB
98 lines
1.9 KiB
//
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// mxToolKit (c) 1999 by Mete Ciragan
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//
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// file: mxPcx.cpp
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// implementation: all
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// last modified: Apr 15 1999, Mete Ciragan
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// copyright: The programs and associated files contained in this
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// distribution were developed by Mete Ciragan. The programs
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// are not in the public domain, but they are freely
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// distributable without licensing fees. These programs are
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// provided without guarantee or warrantee expressed or
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// implied.
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//
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#include "mxtk/mxPcx.h"
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#include <stdio.h>
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#include <stdlib.h>
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mxImage *
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mxPcxRead (const char *filename)
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{
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FILE *file = fopen (filename, "rb");
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if (!file)
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return 0;
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mxPcxHeader header;
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if (fread (&header, sizeof (mxPcxHeader), 1, file) == -1)
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{
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fclose (file);
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return 0;
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}
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/*
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if (header.bitsPerPixel != 8 ||
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header.version != 5)
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{
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fclose (file);
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return 0;
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}
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(void) fseek (file, -769, SEEK_END);
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if (fgetc (file) != 12) {
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fclose (file);
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return NULL;
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}
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*/
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(void) fseek (file, -768, SEEK_END);
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int w = header.xmax - header.xmin + 1;
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int h = header.ymax - header.ymin + 1;
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mxImage *image = new mxImage ();
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if (!image->create (w, h, 8))
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{
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delete image;
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fclose (file);
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return 0;
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}
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if (fread ((byte *) image->palette, sizeof (byte), 768, file) == -1)
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{
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fclose (file);
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return 0;
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}
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(void) fseek(file, sizeof (mxPcxHeader), SEEK_SET);
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int ptr = 0;
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int ch, rep;
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byte *data = (byte *) image->data;
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int size = w * h;
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while (ptr < size)
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{
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ch = fgetc(file);
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if (ch >= 192)
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{
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rep = ch - 192;
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ch = fgetc(file);
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}
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else {
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rep = 1;
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}
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while (rep--)
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data[ptr++] = (byte)ch;
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}
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fclose(file);
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return image;
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}
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bool
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mxPcxWrite (const char * /*filename*/, mxImage * /*image*/)
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{
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return false;
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}
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