git.mutantstargoat.com Git - retrobench/blob - src/dos/main.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <conio.h>
   4 #include "rbench.h"
   5 #include "timer.h"
   6 #include "gfx.h"
   7 #include "logger.h"
   8 #include "cdpmi.h"
   9
  10 static int parse_args(int argc, char **argv);
  11
  12 static struct video_mode *vidmode;
  13
  14 int main(int argc, char **argv)
  15 {
  16         int vmidx;
  17         int num_frames = 0;
  18         void *vmem;
  19
  20         read_config("rbench.cfg");
  21
  22         if(parse_args(argc, argv) == -1) {
  23                 return 1;
  24         }
  25
  26 #ifdef __DJGPP__
  27         __djgpp_nearptr_enable();
  28 #endif
  29
  30         init_logger("rbench.log");
  31
  32         if(init_video() == -1) {
  33                 return 1;
  34         }
  35
  36         if((vmidx = match_video_mode(opt.width, opt.height, opt.bpp)) == -1) {
  37                 return 1;
  38         }
  39         if(!(vmem = set_video_mode(vmidx, 1))) {
  40                 return 1;
  41         }
  42         vidmode = get_video_mode(vmidx);
  43
  44         fb_rmask = vidmode->rmask;
  45         fb_gmask = vidmode->gmask;
  46         fb_bmask = vidmode->bmask;
  47         fb_rshift = vidmode->rshift;
  48         fb_gshift = vidmode->gshift;
  49         fb_bshift = vidmode->bshift;
  50
  51         init_timer(100);
  52
  53         for(;;) {
  54                 while(kbhit()) {
  55                         int c = getch();
  56                         if(c == 27) goto end;
  57                         key_event(c, 1);
  58                 }
  59
  60                 time_msec = get_msec();
  61                 num_frames++;
  62                 redraw();
  63
  64                 blit_frame(framebuf, 0);
  65         }
  66
  67 end:
  68         set_text_mode();
  69         cleanup_video();
  70
  71         if(num_frames) {
  72                 printf("avg framerate: %.1f fps\n", (10000 * num_frames / time_msec) / 10.0f);
  73         }
  74         return 0;
  75 }
  76
  77 int resizefb(int x, int y, int bpp)
  78 {
  79         free(framebuf);
  80
  81         fb_width = x;
  82         fb_height = y;
  83         fb_bpp = bpp;
  84         fb_pitch = x * bpp / 8;
  85
  86         if(!(framebuf = malloc(fb_pitch * fb_height))) {
  87                 fprintf(stderr, "failed to allocate %dx%d (%dbpp) framebuffer\n",
  88                                 fb_width, fb_height, fb_bpp);
  89                 return -1;
  90         }
  91         return 0;
  92 }
  93
  94 static const char *usage_str =
  95         "Usage: %s [options]\n"
  96         "Options:\n"
  97         "  -s <WxH>: resolution\n"
  98         "  -b <bpp>: color depth\n"
  99         "  -h: print usage and exit\n";
 100
 101 static int parse_args(int argc, char **argv)
 102 {
 103         int i;
 104
 105         for(i=1; i<argc; i++) {
 106                 if(argv[i][0] == '-') {
 107                         if(argv[i][2]) {
 108                                 goto inval_arg;
 109                         }
 110                         switch(argv[i][1]) {
 111                         case 's':
 112                                 if(!argv[++i] || sscanf(argv[i], "%dx%d", &opt.width, &opt.height) != 2) {
 113                                         fprintf(stderr, "-s must be followed by WxH\n");
 114                                         return -1;
 115                                 }
 116                                 break;
 117
 118                         case 'b':
 119                                 if(!argv[++i] || !(opt.bpp = atoi(argv[i]))) {
 120                                         fprintf(stderr, "-b must be followed by the color depth\n");
 121                                         return -1;
 122                                 }
 123                                 break;
 124
 125                         case 'h':
 126                                 printf(usage_str, argv[0]);
 127                                 exit(0);
 128
 129                         default:
 130                                 goto inval_arg;
 131                         }
 132                 } else {
 133 inval_arg:      fprintf(stderr, "invalid argument: %s\n", argv[i]);
 134                         return -1;
 135                 }
 136         }
 137         return 0;
 138 }
 139