2 Copyright (C) 2000-2006 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 $Id: midiregion.h 733 2006-08-01 17:19:38Z drobilla $
21 #ifndef __ardour_midi_region_h__
22 #define __ardour_midi_region_h__
26 #include "pbd/fastlog.h"
29 #include "ardour/ardour.h"
30 #include "ardour/gain.h"
31 #include "ardour/logcurve.h"
32 #include "ardour/midi_model.h"
33 #include "ardour/midi_source.h"
34 #include "ardour/region.h"
39 namespace Properties {
40 /* this is pseudo-property: nothing has this as an actual
41 property, but it allows us to signal changes to the
42 MidiModel used by the MidiRegion
44 extern PBD::PropertyDescriptor<void*> midi_data;
55 class MidiStateTracker;
56 template<typename T> class MidiRingBuffer;
58 class MidiRegion : public Region
61 static void make_property_quarks ();
65 boost::shared_ptr<MidiRegion> clone ();
67 boost::shared_ptr<MidiSource> midi_source (uint32_t n=0) const;
69 /* Stub Readable interface */
70 virtual framecnt_t read (Sample*, framepos_t /*pos*/, framecnt_t /*cnt*/, int /*channel*/) const { return 0; }
71 virtual framecnt_t readable_length() const { return length(); }
73 framecnt_t read_at (Evoral::EventSink<framepos_t>& dst,
77 NoteMode mode = Sustained,
78 MidiStateTracker* tracker = 0) const;
80 framepos_t master_read_at (MidiRingBuffer<framepos_t>& dst,
84 NoteMode mode = Sustained) const;
87 int set_state (const XMLNode&, int version);
89 int separate_by_channel (ARDOUR::Session&, std::vector< boost::shared_ptr<Region> >&) const;
93 boost::shared_ptr<Evoral::Control>
94 control(const Evoral::Parameter& id, bool create=false) {
95 return model()->control(id, create);
98 virtual boost::shared_ptr<const Evoral::Control>
99 control(const Evoral::Parameter& id) const {
100 return model()->control(id);
105 int exportme (ARDOUR::Session&, ARDOUR::ExportSpecification&);
107 boost::shared_ptr<MidiModel> model() { return midi_source()->model(); }
108 boost::shared_ptr<const MidiModel> model() const { return midi_source()->model(); }
110 void fix_negative_start ();
114 virtual bool can_trim_start_before_source_start () const {
119 friend class RegionFactory;
120 PBD::Property<Evoral::MusicalTime> _length_beats;
122 MidiRegion (const SourceList&);
123 MidiRegion (boost::shared_ptr<const MidiRegion>, frameoffset_t offset = 0, bool offset_relative = true);
125 framecnt_t _read_at (const SourceList&, Evoral::EventSink<framepos_t>& dst,
129 NoteMode mode = Sustained,
130 MidiStateTracker* tracker = 0) const;
132 void register_properties ();
133 void post_set (const PBD::PropertyChange&);
135 void recompute_at_start ();
136 void recompute_at_end ();
138 void set_position_internal (framepos_t pos, bool allow_bbt_recompute);
139 void set_length_internal (framecnt_t len);
140 void update_length_beats ();
142 void model_changed ();
143 void model_automation_state_changed (Evoral::Parameter const &);
144 void model_contents_changed ();
146 std::set<Evoral::Parameter> _filtered_parameters; ///< parameters that we ask our source not to return when reading
147 PBD::ScopedConnection _model_connection;
148 PBD::ScopedConnection _source_connection;
149 PBD::ScopedConnection _model_contents_connection;
151 double _last_length_beats;
154 } /* namespace ARDOUR */
157 #endif /* __ardour_midi_region_h__ */