Store reel lengths in DCPContent to speed up e.g. timeline with many DCPs.

[dcpomatic.git] / src / lib / ffmpeg_subtitle_stream.cc

diff --git a/src/lib/ffmpeg_subtitle_stream.cc b/src/lib/ffmpeg_subtitle_stream.cc
index 57c54e1eabaec21ea42b379dbc375e82d90bbcb6..d389714e9e0c5ef9f194432e88bc34dfd08e2a82 100644 (file)
--- a/src/lib/ffmpeg_subtitle_stream.cc
+++ b/src/lib/ffmpeg_subtitle_stream.cc
@@ -181,6 +181,23 @@ FFmpegSubtitleStream::find_subtitle_to (string id) const
        return i->second.to;
 }
 
+/** @param id Subtitle id.
+ *  @return true if the `from' and `to' times for this id are equal, which indicates
+ *  that the `to' time is unknown.
+ */
+bool
+FFmpegSubtitleStream::unknown_to (string id) const
+{
+       PeriodMap::const_iterator i = _image_subtitles.find (id);
+       if (i != _image_subtitles.end ()) {
+               return i->second.from == i->second.to;
+       }
+
+       i = _text_subtitles.find (id);
+       DCPOMATIC_ASSERT (i != _text_subtitles.end ());
+       return i->second.from == i->second.to;
+}
+
 /** Add some offset to all the times in the stream */
 void
 FFmpegSubtitleStream::add_offset (ContentTime offset)