Add a --disable-audio option to Kaeru, to transcode streams with no audio.

[nageru] / nageru / flags.cpp

diff --git a/nageru/flags.cpp b/nageru/flags.cpp
index 57e58aecf423053b57d0bdfb00e399bda711dd0c..ed52dc8933fba1f36a1a05c75f8ef85fae7d0691 100644 (file)
--- a/nageru/flags.cpp
+++ b/nageru/flags.cpp
@@ -37,6 +37,7 @@ 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,
@@ -170,6 +171,7 @@ 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");
@@ -252,6 +254,7 @@ 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 },
@@ -367,6 +370,10 @@ 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 +577,7 @@ 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);