Make Futatabi output its status as subtitles, in a hopefully fairly parseable form.

[nageru] / shared / mux.cpp

diff --git a/shared/mux.cpp b/shared/mux.cpp
index 48bfaa147ae53f7da8f04596274c067deadee400..e122e2bb32c998556c377291c1d1d513badd9e98 100644 (file)
--- a/shared/mux.cpp
+++ b/shared/mux.cpp
@@ -47,7 +47,7 @@ struct PacketBefore {
        const AVFormatContext * const ctx;
 };
 
-Mux::Mux(AVFormatContext *avctx, int width, int height, Codec video_codec, const string &video_extradata, const AVCodecParameters *audio_codecpar, AVColorSpace color_space, int time_base, function<void(int64_t)> write_callback, WriteStrategy write_strategy, const vector<MuxMetrics *> &metrics)
+Mux::Mux(AVFormatContext *avctx, int width, int height, Codec video_codec, const string &video_extradata, const AVCodecParameters *audio_codecpar, AVColorSpace color_space, int time_base, function<void(int64_t)> write_callback, WriteStrategy write_strategy, const vector<MuxMetrics *> &metrics, WithSubtitles with_subtitles)
        : write_strategy(write_strategy), avctx(avctx), write_callback(write_callback), metrics(metrics)
 {
        AVStream *avstream_video = avformat_new_stream(avctx, nullptr);
@@ -104,6 +104,20 @@ Mux::Mux(AVFormatContext *avctx, int width, int height, Codec video_codec, const
                streams.push_back(avstream_audio);
        }
 
+       if (with_subtitles == WITH_SUBTITLES) {
+               AVStream *avstream_subtitles = avformat_new_stream(avctx, nullptr);
+               if (avstream_subtitles == nullptr) {
+                       fprintf(stderr, "avformat_new_stream() failed\n");
+                       exit(1);
+               }
+               avstream_subtitles->time_base = AVRational{1, time_base};
+               avstream_subtitles->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
+               avstream_subtitles->codecpar->codec_id = AV_CODEC_ID_WEBVTT;
+               avstream_subtitles->disposition = AV_DISPOSITION_METADATA;
+               streams.push_back(avstream_subtitles);
+               subtitle_stream_idx = streams.size() - 1;
+       }
+
        AVDictionary *options = NULL;
        vector<pair<string, string>> opts = MUX_OPTS;
        for (pair<string, string> opt : opts) {