gtkradiant/plugins/imagem8/m32.cpp

/*
Copyright (C) 1999-2007 id Software, Inc. and contributors.
For a list of contributors, see the accompanying CONTRIBUTORS file.

This file is part of GtkRadiant.

GtkRadiant 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.

GtkRadiant 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 GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

#include <stdio.h>
#include <string.h>
#include <glib.h>
#include "m32.h"

void LoadM32(const char *name, unsigned char **pic, int *width, int *height)
{
    FILE    	*f;
    m32_header_t	*m32_header;
    //rgb_t	*palette;
    int		i, num_pixels, size;
    char	text_buf[255];
    unsigned int	length;
    unsigned char	*palette_ent, *buf_temp;
    unsigned char       *buffer, *m32_file_buffer;

    // open file
    if ( length = vfsLoadFile ((char *) name, (void **) &m32_file_buffer) == (unsigned int) -1)
    {
    	Sys_Printf("Unable to open file %s\n",name);
	return;
    }

    m32_header = (m32_header_t *)m32_file_buffer;

    // make sure we have a valid bitmap file
    if ( m32_header->version != M32_VERSION)
    {
	    vfsFreeFile(m32_file_buffer);
	    Sys_Printf("Invalid M32 file %s\n", name);
    }

    // Get M32 Info
    *width    = m32_header->width[0];		// Only interested in 1st MIP
    *height   = m32_header->height[0];
    num_pixels = (*width) * (*height);
    size = num_pixels*4;

    // Allocate buffer
    buf_temp = (unsigned char *)(g_malloc(size));
    *pic = buf_temp;

    // Image data
    buffer = m32_file_buffer + m32_header->offsets[0];


    // Load texture into buffer
    palette_ent = buffer;
    for(i=0; i<size; i++, palette_ent++)
    {
	*buf_temp++ = *palette_ent;
    }

    vfsFreeFile(m32_file_buffer);
}