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.cc 746 2006-08-02 02:44:23Z drobilla $
27 #include <glibmm/threads.h>
28 #include <glibmm/fileutils.h>
29 #include <glibmm/miscutils.h>
31 #include "pbd/xml++.h"
32 #include "pbd/basename.h"
34 #include "ardour/automation_control.h"
35 #include "ardour/midi_model.h"
36 #include "ardour/midi_region.h"
37 #include "ardour/midi_ring_buffer.h"
38 #include "ardour/midi_source.h"
39 #include "ardour/region_factory.h"
40 #include "ardour/session.h"
41 #include "ardour/source_factory.h"
42 #include "ardour/tempo.h"
43 #include "ardour/types.h"
49 using namespace ARDOUR;
53 namespace Properties {
54 PBD::PropertyDescriptor<void*> midi_data;
55 PBD::PropertyDescriptor<Evoral::MusicalTime> start_beats;
56 PBD::PropertyDescriptor<Evoral::MusicalTime> length_beats;
61 MidiRegion::make_property_quarks ()
63 Properties::midi_data.property_id = g_quark_from_static_string (X_("midi-data"));
64 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for midi-data = %1\n", Properties::midi_data.property_id));
65 Properties::start_beats.property_id = g_quark_from_static_string (X_("start-beats"));
66 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for start-beats = %1\n", Properties::start_beats.property_id));
67 Properties::length_beats.property_id = g_quark_from_static_string (X_("length-beats"));
68 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for length-beats = %1\n", Properties::length_beats.property_id));
72 MidiRegion::register_properties ()
74 add_property (_start_beats);
75 add_property (_length_beats);
78 /* Basic MidiRegion constructor (many channels) */
79 MidiRegion::MidiRegion (const SourceList& srcs)
81 , _start_beats (Properties::start_beats, 0)
82 , _length_beats (Properties::length_beats, midi_source(0)->length_beats())
84 register_properties ();
86 midi_source(0)->ModelChanged.connect_same_thread (_source_connection, boost::bind (&MidiRegion::model_changed, this));
88 assert(_name.val().find("/") == string::npos);
89 assert(_type == DataType::MIDI);
92 MidiRegion::MidiRegion (boost::shared_ptr<const MidiRegion> other)
94 , _start_beats (Properties::start_beats, other->_start_beats)
95 , _length_beats (Properties::length_beats, (Evoral::MusicalTime) 0)
97 update_length_beats ();
98 register_properties ();
100 assert(_name.val().find("/") == string::npos);
101 midi_source(0)->ModelChanged.connect_same_thread (_source_connection, boost::bind (&MidiRegion::model_changed, this));
105 /** Create a new MidiRegion that is part of an existing one */
106 MidiRegion::MidiRegion (boost::shared_ptr<const MidiRegion> other, frameoffset_t offset)
107 : Region (other, offset)
108 , _start_beats (Properties::start_beats, (Evoral::MusicalTime) 0)
109 , _length_beats (Properties::length_beats, (Evoral::MusicalTime) 0)
111 BeatsFramesConverter bfc (_session.tempo_map(), _position);
112 Evoral::MusicalTime const offset_beats = bfc.from (offset);
114 _start_beats = other->_start_beats + offset_beats;
115 _length_beats = other->_length_beats - offset_beats;
117 register_properties ();
119 assert(_name.val().find("/") == string::npos);
120 midi_source(0)->ModelChanged.connect_same_thread (_source_connection, boost::bind (&MidiRegion::model_changed, this));
124 MidiRegion::~MidiRegion ()
128 /** Create a new MidiRegion that has its own version of some/all of the Source used by another.
130 boost::shared_ptr<MidiRegion>
131 MidiRegion::clone (string path) const
133 boost::shared_ptr<MidiSource> newsrc;
135 /* caller must check for pre-existing file */
136 assert (!path.empty());
137 assert (!Glib::file_test (path, Glib::FILE_TEST_EXISTS));
138 newsrc = boost::dynamic_pointer_cast<MidiSource>(
139 SourceFactory::createWritable(DataType::MIDI, _session,
140 path, false, _session.frame_rate()));
141 return clone (newsrc);
144 boost::shared_ptr<MidiRegion>
145 MidiRegion::clone (boost::shared_ptr<MidiSource> newsrc) const
147 BeatsFramesConverter bfc (_session.tempo_map(), _position);
148 Evoral::MusicalTime const bbegin = bfc.from (_start);
149 Evoral::MusicalTime const bend = bfc.from (_start + _length);
151 if (midi_source(0)->write_to (newsrc, bbegin, bend)) {
152 return boost::shared_ptr<MidiRegion> ();
157 plist.add (Properties::name, PBD::basename_nosuffix (newsrc->name()));
158 plist.add (Properties::whole_file, true);
159 plist.add (Properties::start, _start);
160 plist.add (Properties::start_beats, _start_beats);
161 plist.add (Properties::length, _length);
162 plist.add (Properties::length_beats, _length_beats);
163 plist.add (Properties::layer, 0);
165 return boost::dynamic_pointer_cast<MidiRegion> (RegionFactory::create (newsrc, plist, true));
169 MidiRegion::post_set (const PropertyChange& pc)
171 Region::post_set (pc);
173 if (pc.contains (Properties::length) && !pc.contains (Properties::length_beats)) {
174 update_length_beats ();
175 } else if (pc.contains (Properties::start) && !pc.contains (Properties::start_beats)) {
176 set_start_beats_from_start_frames ();
181 MidiRegion::set_start_beats_from_start_frames ()
183 BeatsFramesConverter c (_session.tempo_map(), _position - _start);
184 _start_beats = c.from (_start);
188 MidiRegion::set_length_internal (framecnt_t len)
190 Region::set_length_internal (len);
191 update_length_beats ();
195 MidiRegion::update_after_tempo_map_change ()
197 Region::update_after_tempo_map_change ();
199 /* _position has now been updated for the new tempo map */
200 _start = _position - _session.tempo_map().framepos_minus_beats (_position, _start_beats);
202 send_change (Properties::start);
206 MidiRegion::update_length_beats ()
208 BeatsFramesConverter converter (_session.tempo_map(), _position);
209 _length_beats = converter.from (_length);
213 MidiRegion::set_position_internal (framepos_t pos, bool allow_bbt_recompute)
215 Region::set_position_internal (pos, allow_bbt_recompute);
216 /* zero length regions don't exist - so if _length_beats is zero, this object
217 is under construction.
220 /* leave _length_beats alone, and change _length to reflect the state of things
221 at the new position (tempo map may dictate a different number of frames
223 BeatsFramesConverter converter (_session.tempo_map(), _position);
224 Region::set_length_internal (converter.to (_length_beats));
229 MidiRegion::read_at (Evoral::EventSink<framepos_t>& out, framepos_t position, framecnt_t dur, uint32_t chan_n, NoteMode mode, MidiStateTracker* tracker) const
231 return _read_at (_sources, out, position, dur, chan_n, mode, tracker);
235 MidiRegion::master_read_at (MidiRingBuffer<framepos_t>& out, framepos_t position, framecnt_t dur, uint32_t chan_n, NoteMode mode) const
237 return _read_at (_master_sources, out, position, dur, chan_n, mode); /* no tracker */
241 MidiRegion::_read_at (const SourceList& /*srcs*/, Evoral::EventSink<framepos_t>& dst, framepos_t position, framecnt_t dur, uint32_t chan_n,
242 NoteMode mode, MidiStateTracker* tracker) const
244 frameoffset_t internal_offset = 0;
245 framecnt_t to_read = 0;
247 /* precondition: caller has verified that we cover the desired section */
252 return 0; /* read nothing */
255 if (position < _position) {
256 /* we are starting the read from before the start of the region */
258 dur -= _position - position;
260 /* we are starting the read from after the start of the region */
261 internal_offset = position - _position;
264 if (internal_offset >= _length) {
265 return 0; /* read nothing */
268 if ((to_read = min (dur, _length - internal_offset)) == 0) {
269 return 0; /* read nothing */
272 boost::shared_ptr<MidiSource> src = midi_source(chan_n);
273 src->set_note_mode(mode);
276 cerr << "MR " << name () << " read @ " << position << " * " << to_read
277 << " _position = " << _position
278 << " _start = " << _start
279 << " intoffset = " << internal_offset
283 /* This call reads events from a source and writes them to `dst' timed in session frames */
286 dst, // destination buffer
287 _position - _start, // start position of the source in session frames
288 _start + internal_offset, // where to start reading in the source
289 to_read, // read duration in frames
293 return 0; /* "read nothing" */
302 return Region::state ();
306 MidiRegion::set_state (const XMLNode& node, int version)
308 int ret = Region::set_state (node, version);
311 update_length_beats ();
318 MidiRegion::recompute_at_end ()
320 /* our length has changed
321 * so what? stuck notes are dealt with via a note state tracker
326 MidiRegion::recompute_at_start ()
328 /* as above, but the shift was from the front
329 * maybe bump currently active note's note-ons up so they sound here?
330 * that could be undesireable in certain situations though.. maybe
331 * remove the note entirely, including it's note off? something needs to
332 * be done to keep the played MIDI sane to avoid messing up voices of
333 * polyhonic things etc........
338 MidiRegion::separate_by_channel (ARDOUR::Session&, vector< boost::shared_ptr<Region> >&) const
344 boost::shared_ptr<Evoral::Control>
345 MidiRegion::control (const Evoral::Parameter& id, bool create)
347 return model()->control(id, create);
350 boost::shared_ptr<const Evoral::Control>
351 MidiRegion::control (const Evoral::Parameter& id) const
353 return model()->control(id);
356 boost::shared_ptr<MidiModel>
359 return midi_source()->model();
362 boost::shared_ptr<const MidiModel>
363 MidiRegion::model() const
365 return midi_source()->model();
368 boost::shared_ptr<MidiSource>
369 MidiRegion::midi_source (uint32_t n) const
371 // Guaranteed to succeed (use a static cast?)
372 return boost::dynamic_pointer_cast<MidiSource>(source(n));
376 MidiRegion::model_changed ()
382 /* build list of filtered Parameters, being those whose automation state is not `Play' */
384 _filtered_parameters.clear ();
386 Automatable::Controls const & c = model()->controls();
388 for (Automatable::Controls::const_iterator i = c.begin(); i != c.end(); ++i) {
389 boost::shared_ptr<AutomationControl> ac = boost::dynamic_pointer_cast<AutomationControl> (i->second);
391 if (ac->alist()->automation_state() != Play) {
392 _filtered_parameters.insert (ac->parameter ());
396 /* watch for changes to controls' AutoState */
397 midi_source()->AutomationStateChanged.connect_same_thread (
398 _model_connection, boost::bind (&MidiRegion::model_automation_state_changed, this, _1)
401 model()->ContentsChanged.connect_same_thread (
402 _model_contents_connection, boost::bind (&MidiRegion::model_contents_changed, this));
406 MidiRegion::model_contents_changed ()
408 send_change (PropertyChange (Properties::midi_data));
412 MidiRegion::model_automation_state_changed (Evoral::Parameter const & p)
414 /* Update our filtered parameters list after a change to a parameter's AutoState */
416 boost::shared_ptr<AutomationControl> ac = model()->automation_control (p);
417 if (!ac || ac->alist()->automation_state() == Play) {
418 /* It should be "impossible" for ac to be NULL, but if it is, don't
419 filter the parameter so events aren't lost. */
420 _filtered_parameters.erase (p);
422 _filtered_parameters.insert (p);
425 /* the source will have an iterator into the model, and that iterator will have been set up
426 for a given set of filtered_parameters, so now that we've changed that list we must invalidate
429 Glib::Threads::Mutex::Lock lm (midi_source(0)->mutex());
430 midi_source(0)->invalidate ();
433 /** This is called when a trim drag has resulted in a -ve _start time for this region.
434 * Fix it up by adding some empty space to the source.
437 MidiRegion::fix_negative_start ()
439 BeatsFramesConverter c (_session.tempo_map(), _position);
441 model()->insert_silence_at_start (c.from (-_start));
446 /** Transpose the notes in this region by a given number of semitones */
448 MidiRegion::transpose (int semitones)
450 BeatsFramesConverter c (_session.tempo_map(), _start);
451 model()->transpose (c.from (_start), c.from (_start + _length), semitones);
455 MidiRegion::set_start_internal (framecnt_t s)
457 Region::set_start_internal (s);
458 set_start_beats_from_start_frames ();