ardour/livetrax
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use reverse-reading of MIDI data in DiskReader

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This commit is contained in:
Paul Davis 2019-11-18 12:01:26 -07:00
parent 725a6fc67f
commit a8d62ce056
1 changed files with 11 additions and 10 deletions
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21
libs/ardour/disk_reader.cc
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@ -778,10 +778,15 @@ DiskReader::_do_refill_with_alloc (bool partial_fill)
int
DiskReader::refill (Sample* sum_buffer, Sample* mixdown_buffer, float* gain_buffer, samplecnt_t fill_level)
{
/* nothing to do here for MIDI - the entire playlist has been rendered
* into RAM already.
*/
return refill_audio (sum_buffer, mixdown_buffer, gain_buffer, fill_level);
if (refill_audio (sum_buffer, mixdown_buffer, gain_buffer, fill_level)) {
return -1;
}
if ((_session.transport_speed() < 0.0f) != rt_midibuffer()->reversed()) {
rt_midibuffer()->reverse ();
}
return 0;
}
@ -1090,13 +1095,9 @@ DiskReader::get_midi_playback (MidiBuffer& dst, samplepos_t start_sample, sample
target = &dst;
}
/* Note: do not fetch any data from disk if we're moving
* backwards. TODO: reverse MIDI
*/
if (!pending_overwrite() && !_no_disk_output) {
if (!pending_overwrite() && !_no_disk_output && (end_sample >= start_sample)) {
const samplecnt_t nframes = end_sample - start_sample;
const samplecnt_t nframes = abs (end_sample - start_sample);
if (ms & MonitoringDisk) {