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xash3d-fwgs/utils/mdldec/texture.c

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/*
texture.c - texture writer
Copyright (C) 2020 Andrey Akhmichin
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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "const.h"
#include "crtlib.h"
#include "studio.h"
#include "img_bmp.h"
#include "mdldec.h"
#include "texture.h"
/*
============
WriteBMP
============
*/
static void WriteBMP( mstudiotexture_t *texture )
{
int i, len;
FILE *fp;
const byte *p;
byte *palette, *pic, *buf;
char filename[MAX_SYSPATH], texturename[64];
rgba_t rgba_palette[256];
bmp_t bmp_hdr = {0,};
size_t texture_size;
COM_FileBase( texture->name, texturename );
len = Q_snprintf( filename, MAX_SYSPATH, "%s%s.bmp", destdir, texturename );
if( len == -1 )
{
fprintf( stderr, "ERROR: Destination path is too long. Can't write %s.bmp\n", texturename );
return;
}
fp = fopen( filename, "wb" );
if( !fp )
{
fprintf( stderr, "ERROR: Can't write texture file %s\n", filename );
return;
}
texture_size = texture->height * texture->width;
pic = (byte *)texture_hdr + texture->index;
palette = pic + texture_size;
bmp_hdr.id[0] = 'B';
bmp_hdr.id[1] = 'M';
bmp_hdr.width = texture->width;
bmp_hdr.height = texture->height;
bmp_hdr.planes = 1;
bmp_hdr.bitsPerPixel = 8;
bmp_hdr.bitmapDataSize = texture_size;
bmp_hdr.colors = 256;
bmp_hdr.fileSize = sizeof( bmp_hdr ) + texture_size + sizeof( rgba_palette );
bmp_hdr.bitmapDataOffset = sizeof( bmp_hdr ) + sizeof( rgba_palette );
bmp_hdr.bitmapHeaderSize = BI_SIZE;
fwrite( &bmp_hdr, sizeof( bmp_hdr ), 1, fp );
p = palette;
for( i = 0; i < (int)bmp_hdr.colors; i++ )
{
rgba_palette[i][2] = *p++;
rgba_palette[i][1] = *p++;
rgba_palette[i][0] = *p++;
rgba_palette[i][3] = 0;
}
fwrite( rgba_palette, sizeof( rgba_palette ), 1, fp );
buf = malloc( texture_size );
p = pic;
p += ( bmp_hdr.height - 1 ) * bmp_hdr.width;
for( i = 0; i < bmp_hdr.height; i++ )
{
memcpy( buf + bmp_hdr.width * i, p, bmp_hdr.width );
p -= bmp_hdr.width;
}
fwrite( buf, texture_size, 1, fp );
fclose( fp );
free( buf );
printf( "Texture: %s\n", filename );
}
/*
============
WriteTextures
============
*/
void WriteTextures( void )
{
int i;
mstudiotexture_t *texture;
for( i = 0; i < texture_hdr->numtextures; i++ )
{
texture = (mstudiotexture_t *)( (byte *)texture_hdr + texture_hdr->textureindex ) + i;
WriteBMP( texture );
}
}