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

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <ctype.h>
   5 #include <signal.h>
   6 #include <unistd.h>
   7 #include <fcntl.h>
   8 #include <sys/time.h>
   9 #include <sys/mman.h>
  10 #include "fbgfx.h"
  11 #include "fbevents.h"
  12 #include "rbench.h"
  13 #include "util.h"
  14
  15 static void keyb(int key, int pressed, void *cls);
  16 static int parse_args(int argc, char **argv);
  17
  18 static int quit;
  19 static void *fbmem;
  20
  21 int main(int argc, char **argv)
  22 {
  23         int num_frames = 0;
  24         struct timeval tv, tv0;
  25         struct fbgfx_vmode *vm;
  26
  27         read_config("rbench.cfg");
  28
  29         if(parse_args(argc, argv) == -1) {
  30                 return 1;
  31         }
  32
  33         fbgfx_save_video_mode();
  34         if(!(fbmem = fbgfx_set_video_mode(opt.width, opt.height, opt.bpp))) {
  35                 fprintf(stderr, "failed to set video mode: %dx%d %dbpp\n", opt.width,
  36                                 opt.height, opt.bpp);
  37                 return 1;
  38         }
  39         vm = fbgfx_video_mode_info();
  40
  41         fb_width = vm->width;
  42         fb_height = vm->height;
  43         fb_bpp = vm->bpp;
  44         fb_pitch = vm->pitch;
  45         fb_rmask = vm->rmask;
  46         fb_gmask = vm->gmask;
  47         fb_bmask = vm->bmask;
  48         fb_rshift = vm->rshift;
  49         fb_gshift = vm->gshift;
  50         fb_bshift = vm->bshift;
  51
  52         if(!(framebuf = malloc(fb_pitch * fb_height))) {
  53                 fprintf(stderr, "failed to allocate %dx%d (%d bpp) framebuffer\n",
  54                                 fb_width, fb_height, fb_bpp);
  55                 return 1;
  56         }
  57
  58         if(fbev_init() == -1) {
  59                 goto end;
  60         }
  61         fbev_keyboard(keyb, 0);
  62
  63         if(init() == -1) {
  64                 goto end;
  65         }
  66
  67         gettimeofday(&tv0, 0);
  68
  69         for(;;) {
  70                 fbev_update();
  71                 if(quit) break;
  72
  73                 gettimeofday(&tv, 0);
  74                 time_msec = (tv.tv_sec - tv0.tv_sec) * 1000 + (tv.tv_usec - tv0.tv_usec) / 1000;
  75                 num_frames++;
  76
  77                 redraw();
  78                 memcpy(fbmem, framebuf, fb_pitch * fb_height);
  79         }
  80
  81 end:
  82         cleanup();
  83         fbev_shutdown();
  84         fbgfx_restore_video_mode();
  85
  86         if(num_frames) {
  87                 printf("avg framerate: %.1f fps\n", (10000 * num_frames / time_msec) / 10.0f);
  88         }
  89         return 0;
  90 }
  91
  92 static void keyb(int key, int pressed, void *cls)
  93 {
  94         if(!pressed) return;
  95
  96         if(key == 27 || key == 'q' || key == 'Q') {
  97                 quit = 1;
  98         }
  99 }
 100
 101
 102 static const char *usage_str =
 103         "Usage: %s [options]\n"
 104         "Options:\n"
 105         "  -s <WxH>: resolution\n"
 106         "  -b <bpp>: color depth\n"
 107         "  -h: print usage and exit\n";
 108
 109 static int parse_args(int argc, char **argv)
 110 {
 111         int i;
 112
 113         for(i=1; i<argc; i++) {
 114                 if(argv[i][0] == '-') {
 115                         if(argv[i][2]) {
 116                                 goto inval_arg;
 117                         }
 118                         switch(argv[i][1]) {
 119                         case 's':
 120                                 if(!argv[++i] || sscanf(argv[i], "%dx%d", &opt.width, &opt.height) != 2) {
 121                                         fprintf(stderr, "-s must be followed by WxH\n");
 122                                         return -1;
 123                                 }
 124                                 break;
 125
 126                         case 'b':
 127                                 if(!argv[++i] || !(opt.bpp = atoi(argv[i]))) {
 128                                         fprintf(stderr, "-b must be followed by the color depth\n");
 129                                         return -1;
 130                                 }
 131                                 break;
 132
 133                         case 'h':
 134                                 printf(usage_str, argv[0]);
 135                                 exit(0);
 136
 137                         default:
 138                                 goto inval_arg;
 139                         }
 140                 } else {
 141 inval_arg:      fprintf(stderr, "invalid argument: %s\n", argv[i]);
 142                         return -1;
 143                 }
 144         }
 145         return 0;
 146 }