- enum PassReason {
- PASS_REASON_VIDEO,
- PASS_REASON_AUDIO,
- PASS_REASON_SUBTITLE
- };
-
- void maybe_seek_video (ContentTime time, bool accurate);
- void maybe_seek_audio (ContentTime time, bool accurate);
- void maybe_seek_subtitle (ContentTime time, bool accurate);
-
- /** @return true if this decoder has already returned all its data and will give no more */
- virtual bool pass (PassReason, bool accurate) = 0;
-
- /** Ensure that any future get() calls return data that reflect
- * changes in our content's settings.
- */
- virtual void reset () {}
-
-protected:
- boost::optional<ContentTime> _video_position;
- boost::optional<ContentTime> _audio_position;
- boost::optional<ContentTime> _subtitle_position;
-
-private:
- /** Seek so that the next pass() will yield the next thing
- * (video/sound frame, subtitle etc.) at or after the requested
- * time. Pass accurate = true to try harder to ensure that, at worst,
- * the next thing we yield comes before `time'. This may entail
- * seeking some way before `time' to be on the safe side.
- * Alternatively, if seeking is 100% accurate for this decoder,
- * it may seek to just the right spot.
- */