drivers/gp2x/gp2x-video.c

   1 /* FCE Ultra - NES/Famicom Emulator
   2  *
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  16  */
  17
  18 #include <stdio.h>
  19 #include <string.h>
  20 #include <sys/time.h>
  21
  22 #include "../../video.h"
  23
  24 #include "main.h"
  25 #include "gp2x.h"
  26 #include "minimal.h"
  27 #include "fonts.h"
  28 #include "asmutils.h"
  29
  30 static char fps_str[32];
  31 static int framesEmulated, framesRendered;
  32
  33 int gp2x_palette[256];
  34 unsigned short gp2x_palette16[256];
  35
  36 int paletterefresh;
  37
  38 #define FPS_COLOR 1
  39
  40
  41 static void gp2x_text(unsigned char *screen, int x, int y, char *text, int color, int flip)
  42 {
  43         int i,l,slen;
  44         slen=strlen(text);
  45
  46         screen=screen+x+y*320;
  47
  48         for (i=0;i<slen;i++)
  49         {
  50                 for (l=0;l<8;l++)
  51                 {
  52
  53                         screen[l*320+0]=(fontdata8x8[((text[i])*8)+l]&0x80)?color:screen[l*320+0];
  54                         screen[l*320+1]=(fontdata8x8[((text[i])*8)+l]&0x40)?color:screen[l*320+1];
  55                         screen[l*320+2]=(fontdata8x8[((text[i])*8)+l]&0x20)?color:screen[l*320+2];
  56                         screen[l*320+3]=(fontdata8x8[((text[i])*8)+l]&0x10)?color:screen[l*320+3];
  57                         screen[l*320+4]=(fontdata8x8[((text[i])*8)+l]&0x08)?color:screen[l*320+4];
  58                         screen[l*320+5]=(fontdata8x8[((text[i])*8)+l]&0x04)?color:screen[l*320+5];
  59                         screen[l*320+6]=(fontdata8x8[((text[i])*8)+l]&0x02)?color:screen[l*320+6];
  60                         screen[l*320+7]=(fontdata8x8[((text[i])*8)+l]&0x01)?color:screen[l*320+7];
  61
  62                 }
  63                 screen+=8;
  64         }
  65 }
  66
  67
  68 void CleanSurface(void)
  69 {
  70         int c=4;
  71         while (c--)
  72         {
  73                 memset(gp2x_screen, 0, 320*240);
  74                 gp2x_video_flip();
  75         }
  76         XBuf = gp2x_screen;
  77 }
  78
  79
  80 void KillVideo(void)
  81 {
  82 }
  83
  84
  85 int InitVideo(void)
  86 {
  87         fps_str[0]=0;
  88
  89         CleanSurface();
  90
  91         puts("Initialized GP2X VIDEO via minimal");
  92
  93         srendline=0;
  94         erendline=239;
  95         XBuf = gp2x_screen;
  96         return 1;
  97 }
  98
  99
 100 void ToggleFS(void)
 101 {
 102 }
 103
 104
 105 // 16: rrrr rggg gggb bbbb
 106 void FCEUD_SetPalette(uint8 index, uint8 r, uint8 g, uint8 b)
 107 {
 108         gp2x_palette[index] = (r << 16) | (g << 8) | b;
 109         gp2x_palette16[index] = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | (b >> 3);
 110         gp2x_video_setpalette(gp2x_palette, index + 1);
 111
 112         paletterefresh = 1;
 113 }
 114
 115
 116 void FCEUD_GetPalette(uint8 index, uint8 * r, uint8 * g, uint8 * b)
 117 {
 118         int pix = gp2x_palette[index];
 119         *r = (uint8) (pix >> 16);
 120         *g = (uint8) (pix >> 8);
 121         *b = (uint8)  pix;
 122 }
 123
 124
 125 static INLINE void printFps(uint8 *screen)
 126 {
 127         struct timeval tv_now;
 128         static int prevsec, needfpsflip = 0;
 129
 130         gettimeofday(&tv_now, 0);
 131         if (prevsec != tv_now.tv_sec)
 132         {
 133                 sprintf(fps_str, "%2i/%2i", framesRendered, framesEmulated);
 134                 framesEmulated = framesRendered = 0;
 135                 needfpsflip = 4;
 136                 prevsec = tv_now.tv_sec;
 137         }
 138
 139         if (Settings.scaling == 0)
 140         {
 141                 if (needfpsflip)
 142                 {
 143                         int y, *destt = (int *) screen;
 144                         for (y = 20/*240*/; y; y--)
 145                         {
 146                                 *destt++ = 0; *destt++ = 0; *destt++ = 0; *destt++ = 0;
 147                                 *destt++ = 0; *destt++ = 0; *destt++ = 0; *destt++ = 0;
 148                                 destt += 64+8;
 149
 150                                 //*destt++ = 0x3F3F3F3F; *destt++ = 0x3F3F3F3F; *destt++ = 0x3F3F3F3F; *destt++ = 0x3F3F3F3F;
 151                                 //*destt++ = 0x3F3F3F3F; *destt++ = 0x3F3F3F3F; *destt++ = 0x3F3F3F3F; *destt++ = 0x3F3F3F3F;
 152                         }
 153                         if (Settings.showfps)
 154                         {
 155                                 int sep;
 156                                 for (sep=1; sep < 5; sep++)
 157                                         if (fps_str[sep] == '/' || fps_str[sep] == 0) break;
 158                                 fps_str[sep] = 0;
 159                                 gp2x_text(screen, 0,  0, fps_str,       FPS_COLOR, 0);
 160                                 gp2x_text(screen, 0, 10, fps_str+sep+1, FPS_COLOR, 0);
 161                         }
 162                         needfpsflip--;
 163                 }
 164         }
 165         else
 166         {
 167                 if (Settings.showfps)
 168                 {
 169                         gp2x_text(screen+32, 0, 0, fps_str, FPS_COLOR, 0); // TODO: firstline
 170                 }
 171         }
 172 }
 173
 174
 175 void BlitScreen(uint8 *buf)
 176 {
 177         framesEmulated++;
 178
 179         if (!buf) return;
 180
 181         framesRendered++;
 182
 183         printFps(gp2x_screen);
 184
 185         if (Settings.scaling == 3)
 186                 soft_scale((char *)gp2x_screen + 32, gp2x_palette16, 0, 240);
 187
 188         gp2x_video_flip();
 189         XBuf = gp2x_screen;
 190 }
 191
 192