+ Region::set_position_internal (pos, allow_bbt_recompute);
+ /* zero length regions don't exist - so if _length_beats is zero, this object
+ is under construction.
+ */
+ if (_length_beats) {
+ /* leave _length_beats alone, and change _length to reflect the state of things
+ at the new position (tempo map may dictate a different number of frames
+ */
+ BeatsFramesConverter converter (_session.tempo_map(), _position);
+ Region::set_length_internal (converter.to (_length_beats));
+ }
+}
+
+framecnt_t
+MidiRegion::read_at (Evoral::EventSink<framepos_t>& out, framepos_t position, framecnt_t dur, uint32_t chan_n, NoteMode mode, MidiStateTracker* tracker) const
+{
+ return _read_at (_sources, out, position, dur, chan_n, mode, tracker);
+}
+
+framecnt_t
+MidiRegion::master_read_at (MidiRingBuffer<framepos_t>& out, framepos_t position, framecnt_t dur, uint32_t chan_n, NoteMode mode) const
+{
+ return _read_at (_master_sources, out, position, dur, chan_n, mode); /* no tracker */
+}
+
+framecnt_t
+MidiRegion::_read_at (const SourceList& /*srcs*/, Evoral::EventSink<framepos_t>& dst, framepos_t position, framecnt_t dur, uint32_t chan_n,
+ NoteMode mode, MidiStateTracker* tracker) const
+{
+ frameoffset_t internal_offset = 0;
+ framecnt_t to_read = 0;