allow to query export profile type

[ardour.git] / libs / ardour / midi_source.cc

diff --git a/libs/ardour/midi_source.cc b/libs/ardour/midi_source.cc
index 0c18681dd4a7bbdac1008f753dbc9f52d8029259..5b671b4a2606eca00843d2f0db1ff50384847ad6 100644 (file)
--- a/libs/ardour/midi_source.cc
+++ b/libs/ardour/midi_source.cc
@@ -44,10 +44,11 @@
 #include "ardour/midi_source.h"
 #include "ardour/midi_state_tracker.h"
 #include "ardour/session.h"
+#include "ardour/tempo.h"
 #include "ardour/session_directory.h"
 #include "ardour/source_factory.h"
 
-#include "i18n.h"
+#include "pbd/i18n.h"
 
 namespace ARDOUR { template <typename T> class MidiRingBuffer; }
 
@@ -113,7 +114,7 @@ MidiSource::get_state ()
 int
 MidiSource::set_state (const XMLNode& node, int /*version*/)
 {
-       const XMLProperty* prop;
+       XMLProperty const * prop;
        if ((prop = node.property ("captured-for")) != 0) {
                _captured_for = prop->value();
        }
@@ -192,9 +193,11 @@ MidiSource::midi_read (const Lock&                        lm,
                        framecnt_t                         cnt,
                        MidiStateTracker*                  tracker,
                        MidiChannelFilter*                 filter,
-                       const std::set<Evoral::Parameter>& filtered) const
+                       const std::set<Evoral::Parameter>& filtered,
+                      double                             beat,
+                      double                             start_beat) const
 {
-       BeatsFramesConverter converter(_session.tempo_map(), source_start);
+       //BeatsFramesConverter converter(_session.tempo_map(), source_start);
 
        DEBUG_TRACE (DEBUG::MidiSourceIO,
                     string_compose ("MidiSource::midi_read() %5 sstart %1 start %2 cnt %3 tracker %4\n",
@@ -218,18 +221,18 @@ MidiSource::midi_read (const Lock&                        lm,
                         * "parallel playback of linked midi regions -> no note-offs"
                         *
                         * A midi source can be used by multiple tracks simultaneously,
-                        * in which case midi_read() can called from different tracks for
+                        * in which case midi_read() may be called from different tracks for
                         * overlapping time-ranges.
                         *
                         * However there is only a single iterator for a given midi-source.
-                        * this results in every midi_read() performing a seek.
+                        * This results in every midi_read() performing a seek.
                         *
-                        * if seeking is performed with
+                        * If seeking is performed with
                         *    _model->begin(converter.from(start),...)
                         * the model is used for seeking. That method seeks to the first
                         * *note-on* event after 'start'.
                         *
-                        * _model->begin(conveter.from(  ) ,..) eventually calls
+                        * _model->begin(converter.from(  ) ,..) eventually calls
                         * Sequence<Time>::const_iterator() in libs/evoral/src/Sequence.cpp
                         * which looks up the note-event via seq.note_lower_bound(t);
                         * but the sequence 'seq' only contains note-on events(!).
@@ -237,18 +240,24 @@ MidiSource::midi_read (const Lock&                        lm,
                         * via _active_notes.pop(); and not part of seq.
                         *
                         * see also http://tracker.ardour.org/view.php?id=6287#c16671
-                        * and call 1-900-ardour-midi ($4.99/min)
                         *
                         * The linear search below assures that reading starts at the first
                         * event for the given time, regardless of its event-type.
+                        *
+                        * The performance of this approach is O(N), while the previous
+                        * implementation is O(log(N)). This needs to be optimized:
+                        * The model-iterator or event-sequence needs to be re-designed in
+                        * some way (maybe keep an iterator per playlist).
                         */
                        for (i = _model->begin(); i != _model->end(); ++i) {
-                               const framecnt_t time_frames = converter.to(i->time());
-                               if (time_frames >= start) {
+                               if (i->time().to_double() + (beat - start_beat) >= beat) {
                                        break;
                                }
                        }
                        _model_iter_valid = true;
+                       if (!linear_read) {
+                               _model->active_notes().clear();
+                       }
 #endif
                }
 
@@ -256,21 +265,21 @@ MidiSource::midi_read (const Lock&                        lm,
 
                // Copy events in [start, start + cnt) into dst
                for (; i != _model->end(); ++i) {
-                       const framecnt_t time_frames = converter.to(i->time());
-                       if (time_frames < start + cnt) {
+                       const framecnt_t time_frames = _session.tempo_map().frame_at_beat (i->time().to_double() + (beat - start_beat));
+
+                       if (time_frames < start + cnt + source_start) {
                                if (filter && filter->filter(i->buffer(), i->size())) {
                                        DEBUG_TRACE (DEBUG::MidiSourceIO,
                                                     string_compose ("%1: filter event @ %2 type %3 size %4\n",
-                                                                    _name, time_frames + source_start, i->event_type(), i->size()));
+                                                                    _name, time_frames, i->event_type(), i->size()));
                                        continue;
                                }
-
                                // Offset by source start to convert event time to session time
-                               dst.write (time_frames + source_start, i->event_type(), i->size(), i->buffer());
+                               dst.write (time_frames, i->event_type(), i->size(), i->buffer());
 
                                DEBUG_TRACE (DEBUG::MidiSourceIO,
                                             string_compose ("%1: add event @ %2 type %3 size %4\n",
-                                                            _name, time_frames + source_start, i->event_type(), i->size()));
+                                                            _name, time_frames, i->event_type(), i->size()));
 
                                if (tracker) {
                                        tracker->track (*i);