81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/*
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Copyright (C) 1997-2005 ZSNES Team ( zsKnight, _Demo_, pagefault, Nach )
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http://www.zsnes.com
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http://sourceforge.net/projects/zsnes
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later
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version.
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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifdef __UNIXSDL__
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#include "gblhdr.h"
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#define DIR_SLASH "/"
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#else
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#include <sys/stat.h>
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#define DIR_SLASH "\\"
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#endif
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extern unsigned int newengen, nggposng[2];
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extern unsigned short PrevPicture[64*56], *vidbuffer, *vidbufferofsb;
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void CapturePicture()
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{
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unsigned short work1, work2, filter;
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unsigned int i, j, offset, pppos=0;
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if ((newengen & 0xFF) && ((nggposng[0] & 0xFF) == 5))
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{
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filter = 0x7BDE; // 0111 1011 1101 1110
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}
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else
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{
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filter = 0xF7DE; // 1111 0111 1101 1110
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}
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for (j=0 ; j<56 ; j++)
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{
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offset = 288+16+j*288*4;
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for (i=0 ; i<64 ; i++)
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{
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work1 = ((vidbuffer[offset] & filter)>>1) + ((vidbuffer[offset+2] & filter)>>1);
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work2 = ((vidbuffer[offset+288] & filter)>>1) + ((vidbuffer[offset+288+2] & filter)>>1);
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PrevPicture[pppos] = ((work1 & filter)>>1) + ((work2 & filter)>>1);
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offset += 4;
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pppos++;
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}
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}
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if ((newengen & 0xFF) && ((nggposng[0] & 0xFF) == 5))
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{
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for (pppos=0 ; pppos<64*56 ; pppos++)
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{
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PrevPicture[pppos] = ((PrevPicture[pppos] & 0x7FE0)<<1)|(PrevPicture[pppos] & 0x001F);
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} // 0111 1111 1110 0000 and 0000 0000 0001 1111
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}
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}
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void Clear2xSaIBuffer()
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{
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memset(vidbufferofsb+576, 0xFF, 576*239);
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}
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