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/*
* Copyright � 2006-2016 SplinterGU (Fenix/Bennugd)
* Copyright � 2002-2006 Fenix Team (Fenix)
* Copyright � 1999-2002 Jos� Luis Cebri�n Pag�e (Fenix)
*
* This file is part of Bennu - Game Development
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*
*/
/* --------------------------------------------------------------------------- */
#include "mod_map.h"
/* --------------------------------------------------------------------------- */
/*
* TYPE DEFINITIONS
*/
typedef struct
{
uint8_t Manufacturer;
uint8_t Version;
uint8_t Encoding;
uint8_t BitsPerPixel;
int16_t Xmin, Ymin, Xmax, Ymax;
int16_t HDpi, VDpi;
uint8_t Colormap[48];
uint8_t Reserved;
uint8_t NPlanes;
int16_t BytesPerLine;
int16_t PaletteInfo;
int16_t HscreenSize;
int16_t VscreenSize;
uint8_t Filler[54];
} PCXheader ;
/* --------------------------------------------------------------------------- */
/*
* FUNCTION : gr_read_pcx
*
* Returns GRAPH newly created from FILENAME. GRAPH is created in LIB 0
*
* PARAMS:
* CONST CHAR * filename: File to be read
*
* RETURN VALUE:
* pointer to the newly created GRAPH
*
*/
GRAPH * gr_read_pcx( const char * filename )
{
PCXheader header ;
file * file ;
int width, height, x, y, p, count ;
GRAPH * bitmap ;
uint8_t * ptr, ch ;
file = file_open( filename, "rb" ) ;
if ( !file ) return NULL ;
file_read( file, &header, sizeof( header ) ) ;
/* Arrange the data for big-endian machines */
ARRANGE_WORD( &header.Xmax );
ARRANGE_WORD( &header.Xmin );
ARRANGE_WORD( &header.Ymax );
ARRANGE_WORD( &header.Ymin );
ARRANGE_WORD( &header.BytesPerLine );
ARRANGE_WORD( &header.PaletteInfo );
ARRANGE_WORD( &header.HDpi );
ARRANGE_WORD( &header.VDpi );
ARRANGE_WORD( &header.HscreenSize );
ARRANGE_WORD( &header.VscreenSize );
width = header.Xmax - header.Xmin + 1 ;
height = header.Ymax - header.Ymin + 1 ;
bitmap = bitmap_new( 0, width, height, ( header.BitsPerPixel == 8 ) ? 8 : 16 ) ;
if ( !bitmap )
{
file_close( file );
return NULL;
}
if ( width > header.BytesPerLine )
{
bitmap_destroy( bitmap );
file_close( file );
return NULL;
}
if ( header.BitsPerPixel == 8 )
{
for ( y = 0 ; y < height ; y++ )
for ( p = 0 ; p < header.NPlanes ; p++ )
{
ptr = ( uint8_t * )bitmap->data + bitmap->pitch * y ;
for ( x = 0 ; x < header.BytesPerLine ; )
{
if ( file_read( file, &ch, 1 ) < 1 )
{
bitmap_destroy( bitmap );
file_close( file );
return NULL;
}
if (( ch & 0xC0 ) == 0xC0 )
{
count = ( ch & 0x3F ) ;
file_read( file, &ch, 1 ) ;
}
else
{
count = 1 ;
}
while ( count-- )
{
*ptr = ch ;
x++ ;
ptr += header.NPlanes ;
}
}
}
if ( file_read( file, &ch, 1 ) == 1 && ch == 0x0c )
{
uint8_t colors[256 * 3] ;
if ( file_read( file, colors, sizeof( colors ) ) )
{
bitmap->format->palette = pal_new_rgb(( uint8_t * )colors );
pal_refresh( bitmap->format->palette );
if ( !sys_pixel_format->palette )
{
sys_pixel_format->palette = pal_new( bitmap->format->palette );
/* pal_use( bitmap->format->palette ); */
palette_changed = 1 ;
}
}
}
}
else
{
bitmap_destroy( bitmap );
file_close( file );
return NULL;
}
bitmap->modified = 0 ;
bitmap_analize( bitmap );
return bitmap ;
}
/* --------------------------------------------------------------------------- */
int gr_load_pcx( const char * mapname )
{
GRAPH * gr = gr_read_pcx( mapname ) ;
if ( !gr ) return 0 ;
gr->code = bitmap_next_code() ;
grlib_add_map( 0, gr ) ;
return gr->code ;
}
/* --------------------------------------------------------------------------- */
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