/*** thinlib (c) 2000 Matthew Conte (matt@conte.com)****** This program is free software; you can redistribute it and/or** modify it under the terms of version 2 of the GNU Library General ** Public License as published by the Free Software Foundation.**** 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 ** Library General Public License for more details.  To obtain a ** copy of the GNU Library General Public License, write to the Free ** Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.**** Any permitted reproduction of these routines, in whole or in part,** must bear this legend.****** tl_aa.c**** aalib thinlib driver** $Id: tl_aa.c,v 1.5 2001/03/12 06:06:55 matt Exp $*/#include <stdio.h>#include <string.h>#include "tl_types.h"#include "tl_bmp.h"#include "tl_aa.h"#ifndef NO_AALIB#include <aalib.h>static aa_context *aacontext;static aa_palette aapalette;static aa_renderparams *aaparams;static bitmap_t *aa_screen = NULL;bitmap_t *thin_aa_lockwrite(void){   return aa_screen;}void thin_aa_freewrite(int num_dirties, rect_t *dirty_rects){   UNUSED(num_dirties);   UNUSED(dirty_rects);}/* TODO: generalize dirty rectangle code to be used on this */void thin_aa_blit(bitmap_t *primary, int num_dirties, rect_t *dirty_rects){   int line, pos;   int xsiz, ysiz, xscale, yscale;   int xratio, yratio;   bitmap_t *screen;   UNUSED(num_dirties);   UNUSED(dirty_rects);   screen = aa_screen;   xsiz = screen->width;   ysiz = screen->height;   if (xsiz > primary->width)      xsiz = primary->width;   if (ysiz > primary->height)      ysiz = primary->height;      xratio = (primary->width << 16) / xsiz;   yratio = (primary->height << 16) / ysiz;   for (yscale = 0, line = 0; line < ysiz; line++, yscale += yratio)   {      for (xscale = 0, pos = 0; pos < xsiz; pos++, xscale += xratio)         screen->line[line][pos] = primary->line[yscale >> 16][xscale >> 16];   }   aa_renderpalette(aacontext, aapalette, aaparams, 0, 0,                     aa_scrwidth(aacontext), aa_scrheight(aacontext));   aa_flush(aacontext);}void thin_aa_shutdown(void){   aa_close(aacontext);   thin_bmp_destroy(&aa_screen);}int thin_aa_init(int width, int height, int bpp){   UNUSED(width);   UNUSED(height);   UNUSED(bpp);   aacontext = aa_autoinit(&aa_defparams);   if (NULL == aacontext)      return -1;   aaparams = aa_getrenderparams();   aaparams->dither = AA_NONE;   aaparams->bright = 75;   aaparams->contrast = 64;   aaparams->gamma = 2.5;   aa_hidecursor(aacontext);   memset(aa_image(aacontext), 0, aa_imgwidth(aacontext) * aa_imgheight(aacontext));   if (NULL != aa_screen)      thin_bmp_destroy(&aa_screen);   aa_screen = thin_bmp_createhw(aa_image(aacontext), aa_imgwidth(aacontext),                                  aa_imgheight(aacontext), aa_imgwidth(aacontext));   if (NULL == aa_screen)      return -1;   return 0;}void thin_aa_setpalette(rgb_t *palette, int index, int length){   int i;   for (i = 0; i < length; i++)      aa_setpalette(aapalette, index + i, palette[i].r, palette[i].g, palette[i].b);}int thin_aa_setmode(int width, int height, int bpp){   UNUSED(width);   UNUSED(height);   UNUSED(bpp);   return 0;}#endif /* !NO_AALIB *//*** $Log: tl_aa.c,v $** Revision 1.5  2001/03/12 06:06:55  matt** better keyboard driver, support for bit depths other than 8bpp**** Revision 1.4  2001/02/01 06:28:26  matt** thinlib now works under NT/2000**** Revision 1.3  2000/12/13 13:58:20  matt** cosmetic fixes**** Revision 1.2  2000/11/05 16:32:36  matt** thinlib round 2**** Revision 1.1  2000/11/05 06:29:03  matt** initial revision***/