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;
45 extern PBD::PropertyDescriptor<Evoral::MusicalTime> length_beats;
56 class MidiStateTracker;
57 template<typename T> class MidiRingBuffer;
59 class MidiRegion : public Region
62 static void make_property_quarks ();
66 boost::shared_ptr<MidiRegion> clone ();
68 boost::shared_ptr<MidiSource> midi_source (uint32_t n=0) const;
70 /* Stub Readable interface */
71 virtual framecnt_t read (Sample*, framepos_t /*pos*/, framecnt_t /*cnt*/, int /*channel*/) const { return 0; }
72 virtual framecnt_t readable_length() const { return length(); }
74 framecnt_t read_at (Evoral::EventSink<framepos_t>& dst,
78 NoteMode mode = Sustained,
79 MidiStateTracker* tracker = 0) const;
81 framepos_t master_read_at (MidiRingBuffer<framepos_t>& dst,
85 NoteMode mode = Sustained) const;
88 int set_state (const XMLNode&, int version);
90 int separate_by_channel (ARDOUR::Session&, std::vector< boost::shared_ptr<Region> >&) const;
94 boost::shared_ptr<Evoral::Control>
95 control(const Evoral::Parameter& id, bool create=false) {
96 return model()->control(id, create);
99 virtual boost::shared_ptr<const Evoral::Control>
100 control(const Evoral::Parameter& id) const {
101 return model()->control(id);
106 int exportme (ARDOUR::Session&, ARDOUR::ExportSpecification&);
108 boost::shared_ptr<MidiModel> model() { return midi_source()->model(); }
109 boost::shared_ptr<const MidiModel> model() const { return midi_source()->model(); }
111 void fix_negative_start ();
112 void transpose (int);
116 virtual bool can_trim_start_before_source_start () const {
121 friend class RegionFactory;
122 PBD::Property<Evoral::MusicalTime> _length_beats;
124 MidiRegion (const SourceList&);
125 MidiRegion (boost::shared_ptr<const MidiRegion>);
126 MidiRegion (boost::shared_ptr<const MidiRegion>, frameoffset_t offset);
128 framecnt_t _read_at (const SourceList&, Evoral::EventSink<framepos_t>& dst,
132 NoteMode mode = Sustained,
133 MidiStateTracker* tracker = 0) const;
135 void register_properties ();
136 void post_set (const PBD::PropertyChange&);
138 void recompute_at_start ();
139 void recompute_at_end ();
141 void set_position_internal (framepos_t pos, bool allow_bbt_recompute);
142 void set_length_internal (framecnt_t len);
143 void update_length_beats ();
145 void model_changed ();
146 void model_automation_state_changed (Evoral::Parameter const &);
147 void model_contents_changed ();
149 std::set<Evoral::Parameter> _filtered_parameters; ///< parameters that we ask our source not to return when reading
150 PBD::ScopedConnection _model_connection;
151 PBD::ScopedConnection _source_connection;
152 PBD::ScopedConnection _model_contents_connection;
154 double _last_length_beats;
157 } /* namespace ARDOUR */
160 #endif /* __ardour_midi_region_h__ */