188 lines
7.9 KiB
C++
188 lines
7.9 KiB
C++
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/*
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** Command & Conquer Red Alert(tm)
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** Copyright 2025 Electronic Arts Inc.
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**
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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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. See the
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** GNU General Public License for more details.
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**
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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, see <http://www.gnu.org/licenses/>.
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*/
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/***************************************************************************
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** C O N F I D E N T I A L --- W E S T W O O D A S S O C I A T E S **
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***************************************************************************
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* *
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* Project Name : IFF *
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* *
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* File Name : LOADPCX.CPP *
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* *
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* Programmer : Julio R. Jerez *
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* *
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* Start Date : May 2, 1995 *
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* *
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* Last Update : May 3, 1995 [JRJ] *
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* *
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*-------------------------------------------------------------------------*
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* Functions: *
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* GraphicBufferClass* Read_PCX_File (char* name, void *Buff, long size ); *
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* int Get_PCX_Palette (char * name, void& palette ) *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#include <wwlib32.h>
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#include "filepcx.h"
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/***************************************************************************
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* READ_PCX_FILE -- read a pcx file into a Graphic Buffer *
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* *
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* GraphicBufferClass* Read_PCX_File (char* name, char* palette ,void *Buff, long size ); *
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* *
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* *
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* INPUT: name is a NULL terminated string of the fromat [xxxx.pcx] *
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* palette is optional, if palette != NULL the the color palette of *
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* the pcx file will be place in the memory block pointed *
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* by palette. *
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* Buff is optinal, if Buff == NULL a new memory Buffer *
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* will be allocated, otherwise the file will be placed *
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* at location pointd by Buffer; *
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* Size is the size in bytes of the memory block pointed by Buff *
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* is also optional;
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* *
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* OUTPUT: on succes a pointer to a GraphicBufferClass cointaining the *
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* pcx file, NULL othewise. *
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* *
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* WARNINGS: *
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* *
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* HISTORY: *
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* 05/03/1995 JRJ : Created. *
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*=========================================================================*/
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#define POOL_SIZE 2048
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#define READ_CHAR() *file_ptr++ ; \
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if ( file_ptr >= & pool [ POOL_SIZE ] ) { \
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Read_File ( file_handle, pool , POOL_SIZE ) ; \
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file_ptr = pool ; \
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}
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GraphicBufferClass* Read_PCX_File(char* name, char* Palette, void *Buff, long Size)
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{
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unsigned i , j ;
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unsigned rle ;
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unsigned color ;
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unsigned scan_pos ;
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char * file_ptr ;
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int width ;
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int height ;
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int file_handle ;
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char * buffer ;
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PCX_HEADER header ;
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RGB * pal ;
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char pool [ POOL_SIZE ] ;
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GraphicBufferClass * pic ;
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// Open file name
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file_handle = Open_File ( name , READ ) ;
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if ( file_handle == WW_ERROR ) return NULL ;
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Read_File ( file_handle, & header , sizeof (PCX_HEADER)) ;
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if ( header.id != 10 && header.version != 5 &&
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header.pixelsize != 8 ) return NULL ;
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width = header.width - header.x + 1 ;
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height = header.height - header.y + 1 ;
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if ( Buff ) {
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buffer = ( char * ) Buff;
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i = Size / width;
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height = MIN ( i - 1, height);
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pic = new GraphicBufferClass( width, height, buffer ,Size);
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if ( !(pic && pic->Get_Buffer()))return NULL ;
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} else {
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pic = new GraphicBufferClass( width, height, NULL, width*(height+4));
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if ( !(pic && pic->Get_Buffer()))return NULL ;
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}
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buffer = (char *) pic->Get_Buffer() ;
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file_ptr = pool ;
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Read_File ( file_handle, pool , POOL_SIZE ) ;
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if ( header.byte_per_line != width )
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for ( scan_pos = j = 0 ; j < height ; j ++, scan_pos += width ) {
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for ( i = 0 ; i < width ; ) {
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rle = READ_CHAR ();
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if ( rle > 192 ) {
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rle -= 192 ;
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color = READ_CHAR (); ;
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memset ( buffer + scan_pos + i , color , rle ) ;
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i += rle ;
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} else * ( buffer + scan_pos + i ++ ) = (char)rle ;
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}
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if ( i == width )
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rle = READ_CHAR () ;
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// if ( rle > 192 ) rle = READ_CHAR ();
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}
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else for ( i = 0 ; i < width * height ; ) {
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rle = READ_CHAR ();
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rle &= 0xff;
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if ( rle > 192 ) {
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rle -= 192 ;
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color = READ_CHAR ();
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memset ( buffer + i , color , rle ) ;
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i += rle ;
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} else * ( buffer + i ++ ) = (char)rle ;
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}
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if ( Palette ) {
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//Seek_File ( file_handle , - 256 * sizeof ( RGB ) , SEEK_END ) ;
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Seek_File ( file_handle , 256 * sizeof ( RGB ) , SEEK_END ) ;
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Read_File ( file_handle, Palette , 256L * sizeof ( RGB )) ;
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pal = ( RGB * ) Palette ;
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for ( i = 0 ; i < 256 ; i ++ ) {
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pal -> red >>= 2 ;
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pal -> green >>= 2 ;
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pal -> blue >>= 2 ;
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pal ++ ;
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}
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}
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Close_File (file_handle) ;
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return pic ;
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}
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/***************************************************************************
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* READ_PCX_FILE -- read a pcx file into a Graphic Buffer *
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* *
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* GraphicBufferClass* Read_PCX_File (char* name, BufferClass& Buff, *
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* char* palette) * *
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* *
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* *
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* INPUT: name is a NULL terminated string of the fromat [xxxx.pcx] *
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* Buff is a pointer to a BufferClass the will hold the pcx file *
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* at location pointd by Buffer; *
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* palette is optional, if palette != NULL the the color palette of *
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* the pcx file will be place in the memory block pointed *
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* by palette. *
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* *
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* OUTPUT: on succes a pointer to a GraphicBufferClass cointaining the *
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* pcx file, NULL othewise. *
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* *
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* WARNINGS: *
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* *
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* HISTORY: *
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* 05/03/1995 JRJ : Created. *
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*=========================================================================*/
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GraphicBufferClass* Read_PCX_File (char* name, BufferClass& Buff,char* palette)
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{
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return Read_PCX_File(name, palette, (void*)Buff.Get_Buffer(), Buff.Get_Size());
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}
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