+ bool done = false;
+
+ enum {
+ NONE,
+ CONTENT,
+ BLACK,
+ SILENT
+ } which = NONE;
+
+ if (earliest_content) {
+ which = CONTENT;
+ }
+
+ if (!_black.done() && (!earliest_time || _black.position() < *earliest_time)) {
+ earliest_time = _black.position ();
+ which = BLACK;
+ }
+
+ if (!_silent.done() && (!earliest_time || _silent.position() < *earliest_time)) {
+ earliest_time = _silent.position ();
+ which = SILENT;
+ }
+
+ switch (which) {
+ case CONTENT:
+ earliest_content->done = earliest_content->decoder->pass ();
+ break;
+ case BLACK:
+ emit_video (black_player_video_frame(EYES_BOTH), _black.position());
+ _black.set_position (_black.position() + one_video_frame());
+ break;
+ case SILENT:
+ {
+ DCPTimePeriod period (_silent.period_at_position());
+ if (_last_audio_time) {
+ /* Sometimes the thing that happened last finishes fractionally before
+ this silence. Bodge the start time of the silence to fix it. I'm
+ not sure if this is the right solution --- maybe the last thing should
+ be padded `forward' rather than this thing padding `back'.
+ */
+ period.from = min(period.from, *_last_audio_time);
+ }
+ if (period.duration() > one_video_frame()) {
+ period.to = period.from + one_video_frame();
+ }
+ fill_audio (period);
+ _silent.set_position (period.to);
+ break;
+ }
+ case NONE:
+ done = true;
+ break;