Add missing --help for --v4l-output.

[nageru] / nageru / flags.cpp

diff --git a/nageru/flags.cpp b/nageru/flags.cpp
index bdb9821d5aafed89dbe453be4865600f888beb68..5e044fd502e88c8e78546f9ad75d45fda008d48f 100644 (file)
--- a/nageru/flags.cpp
+++ b/nageru/flags.cpp
@@ -19,6 +19,7 @@ enum LongOption {
        OPTION_MIDI_MAPPING,
        OPTION_DEFAULT_HDMI_INPUT,
        OPTION_FAKE_CARDS_AUDIO,
+       OPTION_V4L_OUTPUT,
        OPTION_HTTP_UNCOMPRESSED_VIDEO,
        OPTION_HTTP_X264_VIDEO,
        OPTION_RECORD_X264_VIDEO,
@@ -37,6 +38,7 @@ enum LongOption {
        OPTION_HTTP_AUDIO_BITRATE,
        OPTION_HTTP_PORT,
        OPTION_NO_TRANSCODE_AUDIO,
+       OPTION_DISABLE_AUDIO,
        OPTION_FLAT_AUDIO,
        OPTION_GAIN_STAGING,
        OPTION_DISABLE_LOCUT,
@@ -142,6 +144,7 @@ void usage(Program program)
                fprintf(stderr, "      --midi-mapping=FILE         start with the given MIDI controller mapping (implies --multichannel)\n");
                fprintf(stderr, "      --default-hdmi-input        default to HDMI over SDI inputs for cards that have both\n");
                fprintf(stderr, "      --fake-cards-audio          make fake (disconnected) cards output a simple tone\n");
+               fprintf(stderr, "      --v4l-output DEVICE         send video (no audio) to V4L2 output/loopback\n");
                fprintf(stderr, "      --http-uncompressed-video   send uncompressed NV12 video to HTTP clients\n");
                fprintf(stderr, "      --http-x264-video           send x264-compressed video to HTTP clients\n");
                fprintf(stderr, "      --record-x264-video         store x264-compressed video to disk (implies --http-x264-video,\n");
@@ -170,6 +173,7 @@ void usage(Program program)
        if (program == PROGRAM_KAERU) {
                fprintf(stderr, "      --no-transcode-audio        copy encoded audio raw from the source stream\n");
                fprintf(stderr, "                                    (requires --http-audio-codec= to be set)\n");
+               fprintf(stderr, "      --disable-audio             do not include any audio in the stream\n");
        }
        if (program == PROGRAM_NAGERU) {
                fprintf(stderr, "      --flat-audio                start with most audio processing turned off\n");
@@ -235,6 +239,7 @@ void parse_flags(Program program, int argc, char * const argv[])
                { "midi-mapping", required_argument, 0, OPTION_MIDI_MAPPING },
                { "default-hdmi-input", no_argument, 0, OPTION_DEFAULT_HDMI_INPUT },
                { "fake-cards-audio", no_argument, 0, OPTION_FAKE_CARDS_AUDIO },
+               { "v4l-output", required_argument, 0, OPTION_V4L_OUTPUT },
                { "http-uncompressed-video", no_argument, 0, OPTION_HTTP_UNCOMPRESSED_VIDEO },
                { "http-x264-video", no_argument, 0, OPTION_HTTP_X264_VIDEO },
                { "record-x264-video", no_argument, 0, OPTION_RECORD_X264_VIDEO },
@@ -252,6 +257,7 @@ void parse_flags(Program program, int argc, char * const argv[])
                { "http-audio-bitrate", required_argument, 0, OPTION_HTTP_AUDIO_BITRATE },
                { "http-port", required_argument, 0, OPTION_HTTP_PORT },
                { "no-transcode-audio", no_argument, 0, OPTION_NO_TRANSCODE_AUDIO },
+               { "disable-audio", no_argument, 0, OPTION_DISABLE_AUDIO },
                { "flat-audio", no_argument, 0, OPTION_FLAT_AUDIO },
                { "gain-staging", required_argument, 0, OPTION_GAIN_STAGING },
                { "disable-locut", no_argument, 0, OPTION_DISABLE_LOCUT },
@@ -286,7 +292,7 @@ void parse_flags(Program program, int argc, char * const argv[])
        bool card_to_mjpeg_stream_export_set = false;
        for ( ;; ) {
                int option_index = 0;
-               int c = getopt_long(argc, argv, "c:t:I:r:v:m:M:w:h:", long_options, &option_index);
+               int c = getopt_long(argc, argv, "c:o:t:I:r:v:m:M:w:h:", long_options, &option_index);
 
                if (c == -1) {
                        break;
@@ -349,6 +355,9 @@ void parse_flags(Program program, int argc, char * const argv[])
                case OPTION_FAKE_CARDS_AUDIO:
                        global_flags.fake_cards_audio = true;
                        break;
+               case OPTION_V4L_OUTPUT:
+                       global_flags.v4l_output_device = optarg;
+                       break;
                case OPTION_HTTP_UNCOMPRESSED_VIDEO:
                        global_flags.uncompressed_video_to_http = true;
                        break;
@@ -367,6 +376,10 @@ void parse_flags(Program program, int argc, char * const argv[])
                case OPTION_NO_TRANSCODE_AUDIO:
                        global_flags.transcode_audio = false;
                        break;
+               case OPTION_DISABLE_AUDIO:
+                       global_flags.transcode_audio = false;
+                       global_flags.enable_audio = false;
+                       break;
                case OPTION_HTTP_X264_VIDEO:
                        global_flags.x264_video_to_http = true;
                        break;
@@ -570,7 +583,7 @@ void parse_flags(Program program, int argc, char * const argv[])
                fprintf(stderr, "ERROR: --output-card points to a nonexistant card\n");
                exit(1);
        }
-       if (!global_flags.transcode_audio && global_flags.stream_audio_codec_name.empty()) {
+       if (global_flags.enable_audio && !global_flags.transcode_audio && global_flags.stream_audio_codec_name.empty()) {
                fprintf(stderr, "ERROR: If not transcoding audio, you must specify ahead-of-time what audio codec is in use\n");
                fprintf(stderr, "       (using --http-audio-codec).\n");
                exit(1);