{
}
-MidiPlaylist::MidiPlaylist (boost::shared_ptr<const MidiPlaylist> other, framepos_t start, framecnt_t dur, string name, bool hidden)
+MidiPlaylist::MidiPlaylist (boost::shared_ptr<const MidiPlaylist> other,
+ framepos_t start,
+ framecnt_t dur,
+ string name,
+ bool hidden)
: Playlist (other, start, dur, name, hidden)
, _note_mode(other->_note_mode)
{
- /* this constructor does NOT notify others (session) */
}
MidiPlaylist::~MidiPlaylist ()
}
};
-/** Returns the number of frames in time duration read (eg could be large when 0 events are read) */
framecnt_t
MidiPlaylist::read (Evoral::EventSink<framepos_t>& dst, framepos_t start, framecnt_t dur, unsigned chan_n)
{
- /* this function is never called from a realtime thread, so
- its OK to block (for short intervals).
- */
-
Playlist::RegionReadLock rl (this);
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, string_compose ("++++++ %1 .. %2 +++++++ %3 trackers +++++++++++++++++\n",
- start, start + dur, _note_trackers.size()));
-
- framepos_t end = start + dur - 1;
+ DEBUG_TRACE (DEBUG::MidiPlaylistIO,
+ string_compose ("---- MidiPlaylist::read %1 .. %2 (%3 trackers) ----\n",
+ start, start + dur, _note_trackers.size()));
- // relevent regions overlapping start <--> end
- vector< boost::shared_ptr<Region> > regs;
- vector< boost::shared_ptr<Region> > ended;
typedef pair<MidiStateTracker*,framepos_t> TrackerInfo;
- vector<TrackerInfo> tracker_info;
- NoteTrackers::iterator t;
+ /* Find relevant regions that overlap [start..end] */
+ const framepos_t end = start + dur - 1;
+ std::vector< boost::shared_ptr<Region> > regs;
+ std::vector< boost::shared_ptr<Region> > ended;
for (RegionList::iterator i = regions.begin(); i != regions.end(); ++i) {
-
- /* in this call to coverage, the return value indicates the
- * overlap status of the read range (start...end) WRT to
- * the region.
- */
-
switch ((*i)->coverage (start, end)) {
case Evoral::OverlapStart:
case Evoral::OverlapInternal:
regs.push_back (*i);
ended.push_back (*i);
break;
+
default:
/* we don't care */
break;
}
}
- if (regs.size() == 1 &&
- (ended.empty() || (ended.size() == 1 && ended.front() == regs.front()))) {
-
- /* just a single region - read directly into dst */
+ /* If we are reading from a single region, we can read directly into dst. Otherwise,
+ we read into a temporarily list, sort it, then write that to dst. */
+ const bool direct_read = regs.size() == 1 &&
+ (ended.empty() || (ended.size() == 1 && ended.front() == regs.front()));
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, string_compose ("Single region (%1) read, ended during this read %2\n", regs.front()->name(),
- ended.size()));
+ Evoral::EventList<framepos_t> evlist;
+ Evoral::EventSink<framepos_t>& tgt = direct_read ? dst : evlist;
- boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion>(regs.front());
+ DEBUG_TRACE (DEBUG::MidiPlaylistIO,
+ string_compose ("\t%1 regions to read, direct: %2\n", regs.size(), direct_read));
- if (mr) {
-
- NoteTrackers::iterator t = _note_trackers.find (mr.get());
- MidiStateTracker* tracker;
- bool new_tracker = false;
-
- if (t == _note_trackers.end()) {
- tracker = new MidiStateTracker;
- new_tracker = true;
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, "\tBEFORE: new tracker\n");
- } else {
- tracker = t->second;
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, string_compose ("\tBEFORE: tracker says there are %1 on notes\n", tracker->on()));
- }
-
- mr->read_at (dst, start, dur, chan_n, _note_mode, tracker);
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, string_compose ("\tAFTER: tracker says there are %1 on notes\n", tracker->on()));
-
- if (!ended.empty()) {
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, string_compose ("\t%1 ended in this read, resolve notes and delete (%2) tracker\n",
- mr->name(), ((new_tracker) ? "new" : "old")));
- tracker->resolve_notes (dst, mr->last_frame());
- delete tracker;
- if (!new_tracker) {
- _note_trackers.erase (t);
- }
- } else {
- if (new_tracker) {
- pair<Region*,MidiStateTracker*> newpair;
- newpair.first = mr.get();
- newpair.second = tracker;
- _note_trackers.insert (newpair);
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, "\tadded tracker to trackers\n");
- }
- }
+ for (vector<boost::shared_ptr<Region> >::iterator i = regs.begin(); i != regs.end(); ++i) {
+ boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion>(*i);
+ if (!mr) {
+ continue;
}
- } else {
-
- /* multiple regions and/or note resolution: sort by layer, read into a temporary non-monotonically
- sorted EventSink, sort and then insert into dst.
- */
-
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, string_compose ("%1 regions to read, plus %2 trackers\n", regs.size(), tracker_info.size()));
-
- Evoral::EventList<framepos_t> evlist;
-
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, string_compose ("for %1 .. %2 we have %3 to consider\n", start, start+dur-1, regs.size()));
-
- for (vector<boost::shared_ptr<Region> >::iterator i = regs.begin(); i != regs.end(); ++i) {
-
- boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion>(*i);
-
- if (!mr) {
- continue;
- }
-
- NoteTrackers::iterator t = _note_trackers.find (mr.get());
- MidiStateTracker* tracker;
- bool new_tracker = false;
-
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, string_compose ("Before %1 (%2 .. %3) we now have %4 events\n", mr->name(), mr->position(), mr->last_frame(), evlist.size()));
+ /* Get the existing note tracker for this region, or create a new one. */
+ NoteTrackers::iterator t = _note_trackers.find (mr.get());
+ MidiStateTracker* tracker = NULL;
+ bool new_tracker = false;
+ if (t == _note_trackers.end()) {
+ tracker = new MidiStateTracker;
+ new_tracker = true;
+ DEBUG_TRACE (DEBUG::MidiPlaylistIO,
+ string_compose ("\tPre-read %1 (%2 .. %3): new tracker\n",
+ mr->name(), mr->position(), mr->last_frame()));
+ } else {
+ tracker = t->second;
+ DEBUG_TRACE (DEBUG::MidiPlaylistIO,
+ string_compose ("\tPre-read %1 (%2 .. %3): %4 active notes\n",
+ mr->name(), mr->position(), mr->last_frame(), tracker->on()));
+ }
- if (t == _note_trackers.end()) {
- tracker = new MidiStateTracker;
- new_tracker = true;
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, "\tBEFORE: new tracker\n");
- } else {
- tracker = t->second;
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, string_compose ("\tBEFORE: tracker says there are %1 on notes\n", tracker->on()));
+ /** Read from region into target. */
+ mr->read_at (tgt, start, dur, chan_n, _note_mode, tracker);
+ DEBUG_TRACE (DEBUG::MidiPlaylistIO,
+ string_compose ("\tPost-read: %1 active notes\n", tracker->on()));
+
+ if (find (ended.begin(), ended.end(), *i) != ended.end()) {
+ /* Region ended within the read range, so resolve any active notes
+ (either stuck notes in the data, or notes that end after the end
+ of the region). */
+ DEBUG_TRACE (DEBUG::MidiPlaylistIO,
+ string_compose ("\t%1 ended, resolve notes and delete (%2) tracker\n",
+ mr->name(), ((new_tracker) ? "new" : "old")));
+
+ tracker->resolve_notes (tgt, (*i)->last_frame());
+ delete tracker;
+ if (!new_tracker) {
+ _note_trackers.erase (t);
}
+ } else {
- mr->read_at (evlist, start, dur, chan_n, _note_mode, tracker);
-
-#ifndef NDEBUG
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, string_compose ("After %1 (%2 .. %3) we now have %4\n", mr->name(), mr->position(), mr->last_frame(), evlist.size()));
- for (Evoral::EventList<framepos_t>::iterator x = evlist.begin(); x != evlist.end(); ++x) {
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, string_compose ("\t%1\n", **x));
- }
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, string_compose ("\tAFTER: tracker says there are %1 on notes\n", tracker->on()));
-#endif
- if (find (ended.begin(), ended.end(), *i) != ended.end()) {
-
- /* the region ended within the read range, so
- * resolve any dangling notes (i.e. notes whose
- * end is beyond the end of the region).
- */
-
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, string_compose ("\t%1 ended in this read, resolve notes and delete (%2) tracker\n",
- mr->name(), ((new_tracker) ? "new" : "old")));
-
- tracker->resolve_notes (evlist, (*i)->last_frame());
- delete tracker;
- if (!new_tracker) {
- _note_trackers.erase (t);
- }
-
- } else {
-
- if (new_tracker) {
- _note_trackers.insert (make_pair (mr.get(), tracker));
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, "\tadded tracker to trackers\n");
- }
+ if (new_tracker) {
+ _note_trackers.insert (make_pair (mr.get(), tracker));
+ DEBUG_TRACE (DEBUG::MidiPlaylistIO, "\tadded tracker to trackers\n");
}
}
+ }
- if (!evlist.empty()) {
-
- /* sort the event list */
- EventsSortByTimeAndType<framepos_t> cmp;
- evlist.sort (cmp);
-
-#ifndef NDEBUG
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, string_compose ("Final we now have %1 events\n", evlist.size()));
- for (Evoral::EventList<framepos_t>::iterator x = evlist.begin(); x != evlist.end(); ++x) {
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, string_compose ("\t%1\n", **x));
- }
-#endif
- /* write into dst */
- for (Evoral::EventList<framepos_t>::iterator e = evlist.begin(); e != evlist.end(); ++e) {
- Evoral::Event<framepos_t>* ev (*e);
- dst.write (ev->time(), ev->event_type(), ev->size(), ev->buffer());
- delete ev;
- }
+ if (!direct_read && !evlist.empty()) {
+ /* We've read from multiple regions, sort the event list by time. */
+ EventsSortByTimeAndType<framepos_t> cmp;
+ evlist.sort (cmp);
+ /* Copy ordered events from event list to dst. */
+ for (Evoral::EventList<framepos_t>::iterator e = evlist.begin(); e != evlist.end(); ++e) {
+ Evoral::Event<framepos_t>* ev (*e);
+ dst.write (ev->time(), ev->event_type(), ev->size(), ev->buffer());
+ delete ev;
}
}
- DEBUG_TRACE (DEBUG::MidiPlaylistIO, "-------------------------------------------------------------\n");
+ DEBUG_TRACE (DEBUG::MidiPlaylistIO, "---- End MidiPlaylist::read ----\n");
return dur;
}
projects / ardour.git / blobdiff