git.sesse.net Git - nageru/blob - flags.cpp

   1 #include "flags.h"
   2
   3 #include <getopt.h>
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6
   7 Flags global_flags;
   8
   9 void usage()
  10 {
  11         fprintf(stderr, "Usage: nageru [OPTION]...\n");
  12         fprintf(stderr, "\n");
  13         fprintf(stderr, "  -h, --help                      print usage information\n");
  14         fprintf(stderr, "  -c, --num-cards                 set number of input cards (default 2)\n");
  15         fprintf(stderr, "  -t, --theme=FILE                choose theme (default theme.lua)\n");
  16         fprintf(stderr, "  -v, --va-display=SPEC           VA-API device for H.264 encoding\n");
  17         fprintf(stderr, "                                    ($DISPLAY spec or /dev/dri/render* path)\n");
  18         fprintf(stderr, "      --http-uncompressed-video   send uncompressed NV12 video to HTTP clients\n");
  19         fprintf(stderr, "      --flat-audio                start with most audio processing turned off\n");
  20 }
  21
  22 void parse_flags(int argc, char * const argv[])
  23 {
  24         static const option long_options[] = {
  25                 { "help", no_argument, 0, 'h' },
  26                 { "num-cards", required_argument, 0, 'c' },
  27                 { "theme", required_argument, 0, 't' },
  28                 { "va-display", required_argument, 0, 1000 },
  29                 { "http-uncompressed-video", no_argument, 0, 1001 },
  30                 { "flat-audio", no_argument, 0, 1002 },
  31                 { 0, 0, 0, 0 }
  32         };
  33         for ( ;; ) {
  34                 int option_index = 0;
  35                 int c = getopt_long(argc, argv, "c:t:", long_options, &option_index);
  36
  37                 if (c == -1) {
  38                         break;
  39                 }
  40                 switch (c) {
  41                 case 'c':
  42                         global_flags.num_cards = atoi(optarg);
  43                         break;
  44                 case 't':
  45                         global_flags.theme_filename = optarg;
  46                         break;
  47                 case 1000:
  48                         global_flags.va_display = optarg;
  49                         break;
  50                 case 1001:
  51                         global_flags.uncompressed_video_to_http = true;
  52                         break;
  53                 case 1002:
  54                         global_flags.flat_audio = true;
  55                         break;
  56                 case 'h':
  57                         usage();
  58                         exit(0);
  59                 default:
  60                         fprintf(stderr, "Unknown option '%s'\n", argv[option_index]);
  61                         fprintf(stderr, "\n");
  62                         usage();
  63                         exit(1);
  64                 }
  65         }
  66 }