Loop recording creates a single long source, regions have to be
"split" from this source, using "start" as offset.
Since MIDI uses absolute timestamps, offsetting this by accumulating
buffer_position += (*ci)->samples;
like Track::use_captured_audio_sources() does, is not correct.
Furthermore, record_enabled() may be off when stopping recording,
MIDI needs to be flushed regardless.
Robin Gareus
0ab46c342f
