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 extern int eoptions;
  39
  40 #define FPS_COLOR 1
  41
  42
  43 static void gp2x_text(unsigned char *screen, int x, int y, char *text, int color, int flip)
  44 {
  45         int i,l,slen;
  46         slen=strlen(text);
  47
  48         screen=screen+x+y*320;
  49
  50         for (i=0;i<slen;i++)
  51         {
  52                 for (l=0;l<8;l++)
  53                 {
  54
  55                         screen[l*320+0]=(fontdata8x8[((text[i])*8)+l]&0x80)?color:0;
  56                         screen[l*320+1]=(fontdata8x8[((text[i])*8)+l]&0x40)?color:0;
  57                         screen[l*320+2]=(fontdata8x8[((text[i])*8)+l]&0x20)?color:0;
  58                         screen[l*320+3]=(fontdata8x8[((text[i])*8)+l]&0x10)?color:0;
  59                         screen[l*320+4]=(fontdata8x8[((text[i])*8)+l]&0x08)?color:0;
  60                         screen[l*320+5]=(fontdata8x8[((text[i])*8)+l]&0x04)?color:0;
  61                         screen[l*320+6]=(fontdata8x8[((text[i])*8)+l]&0x02)?color:0;
  62                         screen[l*320+7]=(fontdata8x8[((text[i])*8)+l]&0x01)?color:0;
  63
  64                 }
  65                 screen+=8;
  66         }
  67 }
  68
  69
  70 void CleanSurface(void)
  71 {
  72         int c=4;
  73         while (c--)
  74         {
  75                 memset32(gp2x_screen, 0, 320*240*2/4);
  76                 gp2x_video_flip();
  77         }
  78         XBuf = gp2x_screen;
  79 }
  80
  81
  82 void KillVideo(void)
  83 {
  84 }
  85
  86
  87 int InitVideo(void)
  88 {
  89         fps_str[0]=0;
  90
  91         CleanSurface();
  92
  93         puts("Initialized GP2X VIDEO via minimal");
  94
  95         srendline=0;
  96         erendline=239;
  97         XBuf = gp2x_screen;
  98         return 1;
  99 }
 100
 101
 102 // 16: rrrr rggg gg0b bbbb
 103 void FCEUD_SetPalette(uint8 index, uint8 r, uint8 g, uint8 b)
 104 {
 105         /* note: menu depends on bit5 being 0 */
 106         gp2x_palette[index] = (r << 16) | (g << 8) | b;
 107         gp2x_palette16[index] = ((r & 0xf8) << 8) | ((g & 0xf8) << 3) | (b >> 3);
 108         gp2x_video_setpalette(gp2x_palette, index + 1);
 109
 110         paletterefresh = 1;
 111 }
 112
 113
 114 void FCEUD_GetPalette(uint8 index, uint8 * r, uint8 * g, uint8 * b)
 115 {
 116         int pix = gp2x_palette[index];
 117         *r = (uint8) (pix >> 16);
 118         *g = (uint8) (pix >> 8);
 119         *b = (uint8)  pix;
 120 }
 121
 122
 123 static INLINE void printFps(uint8 *screen)
 124 {
 125         struct timeval tv_now;
 126         static int prevsec, needfpsflip = 0;
 127
 128         gettimeofday(&tv_now, 0);
 129         if (prevsec != tv_now.tv_sec)
 130         {
 131                 sprintf(fps_str, "%2i/%2i", framesRendered, framesEmulated);
 132                 framesEmulated = framesRendered = 0;
 133                 needfpsflip = 4;
 134                 prevsec = tv_now.tv_sec;
 135         }
 136
 137         if (!Settings.showfps || !screen) return;
 138
 139         if (Settings.scaling == 0)
 140         {
 141                 if (needfpsflip)
 142                 {
 143                         int sep;
 144                         for (sep=1; sep < 5; sep++)
 145                                 if (fps_str[sep] == '/' || fps_str[sep] == 0) break;
 146                         fps_str[sep] = 0;
 147                         gp2x_text(screen, 0,  0, fps_str,       FPS_COLOR, 0);
 148                         gp2x_text(screen, 0, 10, fps_str+sep+1, FPS_COLOR, 0);
 149                         needfpsflip--;
 150                 }
 151         }
 152         else
 153         {
 154                 gp2x_text(screen+32, 0, srendline, fps_str, FPS_COLOR, 0);
 155         }
 156 }
 157
 158
 159 void BlitScreen(uint8 *buf)
 160 {
 161         framesEmulated++;
 162
 163         if (!buf) {
 164                 printFps(0);
 165                 return;
 166         }
 167
 168         framesRendered++;
 169
 170         if (eoptions & EO_CLIPSIDES)
 171         {
 172                 int i, *p = (int *) ((char *)gp2x_screen + 32);
 173                 for (i = 240; i; i--, p += 320/4)
 174                 {
 175                         p[0] = p[1] = p[62] = p[63] = 0;
 176                 }
 177         }
 178
 179         printFps(gp2x_screen);
 180
 181         if (Settings.scaling == 3)
 182         {
 183                 soft_scale((char *)gp2x_screen + 32, gp2x_palette16, srendline, erendline-srendline);
 184                 if (srendline)
 185                         memset32((int *)((char *)gp2x_screen + 32), 0, srendline*320*2/4);
 186         }
 187
 188         gp2x_video_flip();
 189         XBuf = gp2x_screen;
 190 }
 191
 192