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 #include <string.h>
   7
   8 #include <utility>
   9
  10 using namespace std;
  11
  12 Flags global_flags;
  13
  14 // Long options that have no corresponding short option.
  15 enum LongOption {
  16         OPTION_VA_DISPLAY = 1000,
  17         OPTION_HTTP_UNCOMPRESSED_VIDEO,
  18         OPTION_HTTP_X264_VIDEO,
  19         OPTION_X264_PRESET,
  20         OPTION_X264_TUNE,
  21         OPTION_X264_SPEEDCONTROL,
  22         OPTION_X264_SPEEDCONTROL_VERBOSE,
  23         OPTION_X264_BITRATE,
  24         OPTION_X264_VBV_BUFSIZE,
  25         OPTION_X264_VBV_MAX_BITRATE,
  26         OPTION_X264_PARAM,
  27         OPTION_HTTP_MUX,
  28         OPTION_HTTP_COARSE_TIMEBASE,
  29         OPTION_HTTP_AUDIO_CODEC,
  30         OPTION_HTTP_AUDIO_BITRATE,
  31         OPTION_FLAT_AUDIO,
  32         OPTION_GAIN_STAGING,
  33         OPTION_DISABLE_LOCUT,
  34         OPTION_ENABLE_LOCUT,
  35         OPTION_DISABLE_GAIN_STAGING_AUTO,
  36         OPTION_ENABLE_GAIN_STAGING_AUTO,
  37         OPTION_DISABLE_COMPRESSOR,
  38         OPTION_ENABLE_COMPRESSOR,
  39         OPTION_DISABLE_LIMITER,
  40         OPTION_ENABLE_LIMITER,
  41         OPTION_DISABLE_MAKEUP_GAIN_AUTO,
  42         OPTION_ENABLE_MAKEUP_GAIN_AUTO,
  43         OPTION_DISABLE_ALSA_OUTPUT,
  44         OPTION_NO_FLUSH_PBOS
  45 };
  46
  47 void usage()
  48 {
  49         fprintf(stderr, "Usage: nageru [OPTION]...\n");
  50         fprintf(stderr, "\n");
  51         fprintf(stderr, "  -h, --help                      print usage information\n");
  52         fprintf(stderr, "  -c, --num-cards                 set number of input cards, including fake cards (default 2)\n");
  53         fprintf(stderr, "  -C, --num-fake-cards            set number of fake cards (default 0)\n");
  54         fprintf(stderr, "  -t, --theme=FILE                choose theme (default theme.lua)\n");
  55         fprintf(stderr, "  -I, --theme-dir=DIR             search for theme in this directory (can be given multiple times)\n");
  56         fprintf(stderr, "  -v, --va-display=SPEC           VA-API device for H.264 encoding\n");
  57         fprintf(stderr, "                                    ($DISPLAY spec or /dev/dri/render* path)\n");
  58         fprintf(stderr, "  -m, --map-signal=SIGNAL,CARD    set a default card mapping (can be given multiple times)\n");
  59         fprintf(stderr, "      --http-uncompressed-video   send uncompressed NV12 video to HTTP clients\n");
  60         fprintf(stderr, "      --http-x264-video           send x264-compressed video to HTTP clients\n");
  61         fprintf(stderr, "      --x264-preset               x264 quality preset (default " X264_DEFAULT_PRESET ")\n");
  62         fprintf(stderr, "      --x264-tune                 x264 tuning (default " X264_DEFAULT_TUNE ", can be blank)\n");
  63         fprintf(stderr, "      --x264-speedcontrol         try to match x264 preset to available CPU speed\n");
  64         fprintf(stderr, "      --x264-speedcontrol-verbose  output speedcontrol debugging statistics\n");
  65         fprintf(stderr, "      --x264-bitrate              x264 bitrate (in kilobit/sec, default %d)\n",
  66                 DEFAULT_X264_OUTPUT_BIT_RATE);
  67         fprintf(stderr, "      --x264-vbv-bufsize          x264 VBV size (in kilobits, 0 = one-frame VBV,\n");
  68         fprintf(stderr, "                                  default: same as --x264-bitrate, that is, one-second VBV)\n");
  69         fprintf(stderr, "      --x264-vbv-max-bitrate      x264 local max bitrate (in kilobit/sec per --vbv-bufsize,\n");
  70         fprintf(stderr, "                                  0 = no limit, default: same as --x264-bitrate, i.e., CBR)\n");
  71         fprintf(stderr, "      --x264-param=NAME[,VALUE]   set any x264 parameter, for fine tuning\n");
  72         fprintf(stderr, "      --http-mux=NAME             mux to use for HTTP streams (default " DEFAULT_STREAM_MUX_NAME ")\n");
  73         fprintf(stderr, "      --http-audio-codec=NAME     audio codec to use for HTTP streams\n");
  74         fprintf(stderr, "                                  (default is to use the same as for the recording)\n");
  75         fprintf(stderr, "      --http-audio-bitrate=KBITS  audio codec bit rate to use for HTTP streams\n");
  76         fprintf(stderr, "                                  (default is %d, ignored unless --http-audio-codec is set)\n",
  77                 DEFAULT_AUDIO_OUTPUT_BIT_RATE / 1000);
  78         fprintf(stderr, "      --http-coarse-timebase      use less timebase for HTTP (recommended for muxers\n");
  79         fprintf(stderr, "                                  that handle large pts poorly, like e.g. MP4)\n");
  80         fprintf(stderr, "      --flat-audio                start with most audio processing turned off\n");
  81         fprintf(stderr, "                                    (can be overridden by e.g. --enable-limiter)\n");
  82         fprintf(stderr, "      --gain-staging=DB           set initial gain staging to the given value\n");
  83         fprintf(stderr, "                                    (--disable-gain-staging-auto)\n");
  84         fprintf(stderr, "      --disable-locut             turn off locut filter (also --enable)\n");
  85         fprintf(stderr, "      --disable-gain-staging-auto  turn off automatic gain staging (also --enable)\n");
  86         fprintf(stderr, "      --disable-compressor        turn off regular compressor (also --enable)\n");
  87         fprintf(stderr, "      --disable-limiter           turn off limiter (also --enable)\n");
  88         fprintf(stderr, "      --disable-makeup-gain-auto  turn off auto-adjustment of final makeup gain (also --enable)\n");
  89         fprintf(stderr, "      --disable-alsa-output       disable audio monitoring via ALSA\n");
  90         fprintf(stderr, "      --no-flush-pbos             do not explicitly signal texture data uploads\n");
  91         fprintf(stderr, "                                    (will give display corruption, but makes it\n");
  92         fprintf(stderr, "                                    possible to run with apitrace in real time)\n");
  93 }
  94
  95 void parse_flags(int argc, char * const argv[])
  96 {
  97         static const option long_options[] = {
  98                 { "help", no_argument, 0, 'h' },
  99                 { "num-cards", required_argument, 0, 'c' },
 100                 { "num-fake-cards", required_argument, 0, 'C' },
 101                 { "theme", required_argument, 0, 't' },
 102                 { "theme-dir", required_argument, 0, 'I' },
 103                 { "map-signal", required_argument, 0, 'm' },
 104                 { "va-display", required_argument, 0, OPTION_VA_DISPLAY },
 105                 { "http-uncompressed-video", no_argument, 0, OPTION_HTTP_UNCOMPRESSED_VIDEO },
 106                 { "http-x264-video", no_argument, 0, OPTION_HTTP_X264_VIDEO },
 107                 { "x264-preset", required_argument, 0, OPTION_X264_PRESET },
 108                 { "x264-tune", required_argument, 0, OPTION_X264_TUNE },
 109                 { "x264-speedcontrol", no_argument, 0, OPTION_X264_SPEEDCONTROL },
 110                 { "x264-speedcontrol-verbose", no_argument, 0, OPTION_X264_SPEEDCONTROL_VERBOSE },
 111                 { "x264-bitrate", required_argument, 0, OPTION_X264_BITRATE },
 112                 { "x264-vbv-bufsize", required_argument, 0, OPTION_X264_VBV_BUFSIZE },
 113                 { "x264-vbv-max-bitrate", required_argument, 0, OPTION_X264_VBV_MAX_BITRATE },
 114                 { "x264-param", required_argument, 0, OPTION_X264_PARAM },
 115                 { "http-mux", required_argument, 0, OPTION_HTTP_MUX },
 116                 { "http-coarse-timebase", no_argument, 0, OPTION_HTTP_COARSE_TIMEBASE },
 117                 { "http-audio-codec", required_argument, 0, OPTION_HTTP_AUDIO_CODEC },
 118                 { "http-audio-bitrate", required_argument, 0, OPTION_HTTP_AUDIO_BITRATE },
 119                 { "flat-audio", no_argument, 0, OPTION_FLAT_AUDIO },
 120                 { "gain-staging", required_argument, 0, OPTION_GAIN_STAGING },
 121                 { "disable-locut", no_argument, 0, OPTION_DISABLE_LOCUT },
 122                 { "enable-locut", no_argument, 0, OPTION_ENABLE_LOCUT },
 123                 { "disable-gain-staging-auto", no_argument, 0, OPTION_DISABLE_GAIN_STAGING_AUTO },
 124                 { "enable-gain-staging-auto", no_argument, 0, OPTION_ENABLE_GAIN_STAGING_AUTO },
 125                 { "disable-compressor", no_argument, 0, OPTION_DISABLE_COMPRESSOR },
 126                 { "enable-compressor", no_argument, 0, OPTION_ENABLE_COMPRESSOR },
 127                 { "disable-limiter", no_argument, 0, OPTION_DISABLE_LIMITER },
 128                 { "enable-limiter", no_argument, 0, OPTION_ENABLE_LIMITER },
 129                 { "disable-makeup-gain-auto", no_argument, 0, OPTION_DISABLE_MAKEUP_GAIN_AUTO },
 130                 { "enable-makeup-gain-auto", no_argument, 0, OPTION_ENABLE_MAKEUP_GAIN_AUTO },
 131                 { "disable-alsa-output", no_argument, 0, OPTION_DISABLE_ALSA_OUTPUT },
 132                 { "no-flush-pbos", no_argument, 0, OPTION_NO_FLUSH_PBOS },
 133                 { 0, 0, 0, 0 }
 134         };
 135         vector<string> theme_dirs;
 136         for ( ;; ) {
 137                 int option_index = 0;
 138                 int c = getopt_long(argc, argv, "c:C:t:v:m:", long_options, &option_index);
 139
 140                 if (c == -1) {
 141                         break;
 142                 }
 143                 switch (c) {
 144                 case 'c':
 145                         global_flags.num_cards = atoi(optarg);
 146                         break;
 147                 case 'C':
 148                         global_flags.num_fake_cards = atoi(optarg);
 149                         break;
 150                 case 't':
 151                         global_flags.theme_filename = optarg;
 152                         break;
 153                 case 'I':
 154                         theme_dirs.push_back(optarg);
 155                         break;
 156                 case 'm': {
 157                         char *ptr = strchr(optarg, ',');
 158                         if (ptr == nullptr) {
 159                                 fprintf(stderr, "ERROR: Invalid argument '%s' to --map-signal (needs a signal and a card number, separated by comma)\n", optarg);
 160                                 exit(1);
 161                         }
 162                         *ptr = '\0';
 163                         const int signal_num = atoi(optarg);
 164                         const int card_num = atoi(ptr + 1);
 165                         if (global_flags.default_stream_mapping.count(signal_num)) {
 166                                 fprintf(stderr, "ERROR: Signal %d already mapped to card %d\n",
 167                                         signal_num, global_flags.default_stream_mapping[signal_num]);
 168                                 exit(1);
 169                         }
 170                         global_flags.default_stream_mapping[signal_num] = card_num;
 171                         break;
 172                 }
 173                 case OPTION_VA_DISPLAY:
 174                         global_flags.va_display = optarg;
 175                         break;
 176                 case OPTION_HTTP_UNCOMPRESSED_VIDEO:
 177                         global_flags.uncompressed_video_to_http = true;
 178                         break;
 179                 case OPTION_HTTP_MUX:
 180                         global_flags.stream_mux_name = optarg;
 181                         break;
 182                 case OPTION_HTTP_COARSE_TIMEBASE:
 183                         global_flags.stream_coarse_timebase = true;
 184                         break;
 185                 case OPTION_HTTP_AUDIO_CODEC:
 186                         global_flags.stream_audio_codec_name = optarg;
 187                         break;
 188                 case OPTION_HTTP_AUDIO_BITRATE:
 189                         global_flags.stream_audio_codec_bitrate = atoi(optarg) * 1000;
 190                         break;
 191                 case OPTION_HTTP_X264_VIDEO:
 192                         global_flags.x264_video_to_http = true;
 193                         break;
 194                 case OPTION_X264_PRESET:
 195                         global_flags.x264_preset = optarg;
 196                         break;
 197                 case OPTION_X264_TUNE:
 198                         global_flags.x264_tune = optarg;
 199                         break;
 200                 case OPTION_X264_SPEEDCONTROL:
 201                         global_flags.x264_speedcontrol = true;
 202                         break;
 203                 case OPTION_X264_SPEEDCONTROL_VERBOSE:
 204                         global_flags.x264_speedcontrol_verbose = true;
 205                         break;
 206                 case OPTION_X264_BITRATE:
 207                         global_flags.x264_bitrate = atoi(optarg);
 208                         break;
 209                 case OPTION_X264_VBV_BUFSIZE:
 210                         global_flags.x264_vbv_buffer_size = atoi(optarg);
 211                         break;
 212                 case OPTION_X264_VBV_MAX_BITRATE:
 213                         global_flags.x264_vbv_max_bitrate = atoi(optarg);
 214                         break;
 215                 case OPTION_X264_PARAM:
 216                         global_flags.x264_extra_param.push_back(optarg);
 217                         break;
 218                 case OPTION_FLAT_AUDIO:
 219                         // If --flat-audio is given, turn off everything that messes with the sound,
 220                         // except the final makeup gain.
 221                         global_flags.locut_enabled = false;
 222                         global_flags.gain_staging_auto = false;
 223                         global_flags.compressor_enabled = false;
 224                         global_flags.limiter_enabled = false;
 225                         break;
 226                 case OPTION_GAIN_STAGING:
 227                         global_flags.initial_gain_staging_db = atof(optarg);
 228                         global_flags.gain_staging_auto = false;
 229                         break;
 230                 case OPTION_DISABLE_LOCUT:
 231                         global_flags.locut_enabled = false;
 232                         break;
 233                 case OPTION_ENABLE_LOCUT:
 234                         global_flags.locut_enabled = true;
 235                         break;
 236                 case OPTION_DISABLE_GAIN_STAGING_AUTO:
 237                         global_flags.gain_staging_auto = false;
 238                         break;
 239                 case OPTION_ENABLE_GAIN_STAGING_AUTO:
 240                         global_flags.gain_staging_auto = true;
 241                         break;
 242                 case OPTION_DISABLE_COMPRESSOR:
 243                         global_flags.compressor_enabled = false;
 244                         break;
 245                 case OPTION_ENABLE_COMPRESSOR:
 246                         global_flags.compressor_enabled = true;
 247                         break;
 248                 case OPTION_DISABLE_LIMITER:
 249                         global_flags.limiter_enabled = false;
 250                         break;
 251                 case OPTION_ENABLE_LIMITER:
 252                         global_flags.limiter_enabled = true;
 253                         break;
 254                 case OPTION_DISABLE_MAKEUP_GAIN_AUTO:
 255                         global_flags.final_makeup_gain_auto = false;
 256                         break;
 257                 case OPTION_ENABLE_MAKEUP_GAIN_AUTO:
 258                         global_flags.final_makeup_gain_auto = true;
 259                         break;
 260                 case OPTION_DISABLE_ALSA_OUTPUT:
 261                         global_flags.enable_alsa_output = false;
 262                         break;
 263                 case OPTION_NO_FLUSH_PBOS:
 264                         global_flags.flush_pbos = false;
 265                         break;
 266                 case 'h':
 267                         usage();
 268                         exit(0);
 269                 default:
 270                         fprintf(stderr, "Unknown option '%s'\n", argv[option_index]);
 271                         fprintf(stderr, "\n");
 272                         usage();
 273                         exit(1);
 274                 }
 275         }
 276
 277         if (global_flags.uncompressed_video_to_http &&
 278             global_flags.x264_video_to_http) {
 279                 fprintf(stderr, "ERROR: --http-uncompressed-video and --http-x264-video are mutually incompatible\n");
 280                 exit(1);
 281         }
 282         if (global_flags.num_fake_cards > global_flags.num_cards) {
 283                 fprintf(stderr, "ERROR: More fake cards then total cards makes no sense\n");
 284                 exit(1);
 285         }
 286         if (global_flags.num_cards <= 0) {
 287                 fprintf(stderr, "ERROR: --num-cards must be at least 1\n");
 288                 exit(1);
 289         }
 290         if (global_flags.num_fake_cards < 0) {
 291                 fprintf(stderr, "ERROR: --num-fake-cards cannot be negative\n");
 292                 exit(1);
 293         }
 294         if (global_flags.x264_speedcontrol) {
 295                 if (!global_flags.x264_preset.empty() && global_flags.x264_preset != "faster") {
 296                         fprintf(stderr, "WARNING: --x264-preset is overridden by --x264-speedcontrol (implicitly uses \"faster\" as base preset)\n");
 297                 }
 298                 global_flags.x264_preset = "faster";
 299         } else if (global_flags.x264_preset.empty()) {
 300                 global_flags.x264_preset = X264_DEFAULT_PRESET;
 301         }
 302         if (!theme_dirs.empty()) {
 303                 global_flags.theme_dirs = theme_dirs;
 304         }
 305
 306         for (pair<int, int> mapping : global_flags.default_stream_mapping) {
 307                 if (mapping.second >= global_flags.num_cards) {
 308                         fprintf(stderr, "ERROR: Signal %d mapped to card %d, which doesn't exist (try adjusting --num-cards)\n",
 309                                 mapping.first, mapping.second);
 310                         exit(1);
 311                 }
 312         }
 313 }