2 Copyright (C) 2012 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.
20 #include "ardour/midi_track.h"
21 #include "ardour/midi_region.h"
22 #include "ardour/tempo.h"
23 #include "ardour/types.h"
25 #include "gui_thread.h"
26 #include "midi_region_view.h"
27 #include "public_editor.h"
28 #include "step_editor.h"
29 #include "step_entry.h"
31 using namespace ARDOUR;
35 StepEditor::StepEditor (PublicEditor& e, boost::shared_ptr<MidiTrack> t, MidiTimeAxisView& mtv)
41 step_edit_insert_position = 0;
42 _step_edit_triplet_countdown = 0;
43 _step_edit_within_chord = 0;
44 _step_edit_chord_duration = 0.0;
45 step_edit_region_view = 0;
47 _track->PlaylistChanged.connect (*this, invalidator (*this),
48 boost::bind (&StepEditor::playlist_changed, this),
53 StepEditor::~StepEditor()
59 StepEditor::start_step_editing ()
61 _step_edit_triplet_countdown = 0;
62 _step_edit_within_chord = 0;
63 _step_edit_chord_duration = 0.0;
64 step_edit_region.reset ();
65 step_edit_region_view = 0;
66 last_added_pitch = -1;
69 resync_step_edit_position ();
70 prepare_step_edit_region ();
71 reset_step_edit_beat_pos ();
73 assert (step_edit_region);
74 assert (step_edit_region_view);
76 if (step_editor == 0) {
77 step_editor = new StepEntry (*this);
78 step_editor->signal_delete_event().connect (sigc::mem_fun (*this, &StepEditor::step_editor_hidden));
79 step_editor->signal_hide().connect (sigc::mem_fun (*this, &StepEditor::step_editor_hide));
82 step_edit_region_view->show_step_edit_cursor (step_edit_beat_pos);
83 step_edit_region_view->set_step_edit_cursor_width (step_editor->note_length());
85 step_editor->present ();
89 StepEditor::resync_step_edit_position ()
91 step_edit_insert_position = _editor.get_preferred_edit_position ();
95 StepEditor::resync_step_edit_to_edit_point ()
97 resync_step_edit_position ();
98 if (step_edit_region) {
99 reset_step_edit_beat_pos ();
104 StepEditor::prepare_step_edit_region ()
106 boost::shared_ptr<Region> r = _track->playlist()->top_region_at (step_edit_insert_position);
109 step_edit_region = boost::dynamic_pointer_cast<MidiRegion>(r);
112 if (step_edit_region) {
113 RegionView* rv = _mtv.midi_view()->find_view (step_edit_region);
114 step_edit_region_view = dynamic_cast<MidiRegionView*> (rv);
118 const Meter& m = _mtv.session()->tempo_map().meter_at (step_edit_insert_position);
119 const Tempo& t = _mtv.session()->tempo_map().tempo_at (step_edit_insert_position);
121 step_edit_region = _mtv.add_region (step_edit_insert_position, floor (m.frames_per_bar (t, _mtv.session()->frame_rate())), true);
123 RegionView* rv = _mtv.midi_view()->find_view (step_edit_region);
124 step_edit_region_view = dynamic_cast<MidiRegionView*>(rv);
130 StepEditor::reset_step_edit_beat_pos ()
132 assert (step_edit_region);
133 assert (step_edit_region_view);
135 framecnt_t frames_from_start = _editor.get_preferred_edit_position() - step_edit_region->position();
137 if (frames_from_start < 0) {
138 /* this can happen with snap enabled, and the edit point == Playhead. we snap the
139 position of the new region, and it can end up after the edit point.
141 frames_from_start = 0;
144 step_edit_beat_pos = step_edit_region_view->region_frames_to_region_beats (frames_from_start);
145 step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
149 StepEditor::step_editor_hidden (GdkEventAny*)
152 return true; // XXX remember position ?!
156 StepEditor::step_editor_hide ()
158 /* everything else will follow the change in the model */
159 _track->set_step_editing (false);
163 StepEditor::stop_step_editing ()
166 step_editor->hide ();
169 if (step_edit_region_view) {
170 step_edit_region_view->hide_step_edit_cursor();
173 step_edit_region.reset ();
177 StepEditor::check_step_edit ()
179 MidiRingBuffer<framepos_t>& incoming (_track->step_edit_ring_buffer());
181 uint32_t bufsize = 32;
183 buf = new uint8_t[bufsize];
185 while (incoming.read_space()) {
187 Evoral::EventType type;
190 incoming.read_prefix (&time, &type, &size);
192 if (size > bufsize) {
195 buf = new uint8_t[bufsize];
198 incoming.read_contents (size, buf);
200 if ((buf[0] & 0xf0) == MIDI_CMD_NOTE_ON) {
201 step_add_note (buf[0] & 0xf, buf[1], buf[2], 0.0);
207 StepEditor::step_add_bank_change (uint8_t /*channel*/, uint8_t /*bank*/)
213 StepEditor::step_add_program_change (uint8_t /*channel*/, uint8_t /*program*/)
219 StepEditor::step_edit_sustain (Evoral::MusicalTime beats)
221 if (step_edit_region_view) {
222 step_edit_region_view->step_sustain (beats);
227 StepEditor::move_step_edit_beat_pos (Evoral::MusicalTime beats)
230 step_edit_beat_pos = min (step_edit_beat_pos + beats,
231 step_edit_region_view->region_frames_to_region_beats (step_edit_region->length()));
232 } else if (beats < 0.0) {
233 if (-beats < step_edit_beat_pos) {
234 step_edit_beat_pos += beats; // its negative, remember
236 step_edit_beat_pos = 0;
239 step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
243 StepEditor::step_add_note (uint8_t channel, uint8_t pitch, uint8_t velocity, Evoral::MusicalTime beat_duration)
245 /* do these things in case undo removed the step edit region
247 if (!step_edit_region) {
248 resync_step_edit_position ();
249 prepare_step_edit_region ();
250 reset_step_edit_beat_pos ();
251 step_edit_region_view->show_step_edit_cursor (step_edit_beat_pos);
252 step_edit_region_view->set_step_edit_cursor_width (step_editor->note_length());
255 assert (step_edit_region);
256 assert (step_edit_region_view);
258 if (beat_duration == 0.0 && step_editor) {
259 beat_duration = step_editor->note_length();
260 } else if (beat_duration == 0.0) {
262 beat_duration = _editor.get_grid_type_as_beats (success, step_edit_insert_position);
269 MidiStreamView* msv = _mtv.midi_view();
271 /* make sure its visible on the vertical axis */
273 if (pitch < msv->lowest_note() || pitch > msv->highest_note()) {
274 msv->update_note_range (pitch);
275 msv->set_note_range (MidiStreamView::ContentsRange);
278 /* make sure its visible on the horizontal axis */
280 framepos_t fpos = step_edit_region_view->region_beats_to_absolute_frames (step_edit_beat_pos + beat_duration);
282 if (fpos >= (_editor.leftmost_sample() + _editor.current_page_samples())) {
283 _editor.reset_x_origin (fpos - (_editor.current_page_samples()/4));
286 Evoral::MusicalTime at = step_edit_beat_pos;
287 Evoral::MusicalTime len = beat_duration;
289 if ((last_added_pitch >= 0) && (pitch == last_added_pitch) && (last_added_end == step_edit_beat_pos)) {
291 /* avoid any apparent note overlap - move the start of this note
292 up by 1 tick from where the last note ended
295 at += 1.0/Timecode::BBT_Time::ticks_per_beat;
296 len -= 1.0/Timecode::BBT_Time::ticks_per_beat;
299 step_edit_region_view->step_add_note (channel, pitch, velocity, at, len);
301 last_added_pitch = pitch;
302 last_added_end = at+len;
304 if (_step_edit_triplet_countdown > 0) {
305 _step_edit_triplet_countdown--;
307 if (_step_edit_triplet_countdown == 0) {
308 _step_edit_triplet_countdown = 3;
312 if (!_step_edit_within_chord) {
313 step_edit_beat_pos += beat_duration;
314 step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
316 step_edit_beat_pos += 1.0/Timecode::BBT_Time::ticks_per_beat; // tiny, but no longer overlapping
317 _step_edit_chord_duration = max (_step_edit_chord_duration, beat_duration);
324 StepEditor::set_step_edit_cursor_width (Evoral::MusicalTime beats)
326 if (step_edit_region_view) {
327 step_edit_region_view->set_step_edit_cursor_width (beats);
332 StepEditor::step_edit_within_triplet() const
334 return _step_edit_triplet_countdown > 0;
338 StepEditor::step_edit_within_chord() const
340 return _step_edit_within_chord;
344 StepEditor::step_edit_toggle_triplet ()
346 if (_step_edit_triplet_countdown == 0) {
347 _step_edit_within_chord = false;
348 _step_edit_triplet_countdown = 3;
350 _step_edit_triplet_countdown = 0;
355 StepEditor::step_edit_toggle_chord ()
357 if (_step_edit_within_chord) {
358 _step_edit_within_chord = false;
359 step_edit_beat_pos += _step_edit_chord_duration;
360 step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
362 _step_edit_triplet_countdown = 0;
363 _step_edit_within_chord = true;
368 StepEditor::step_edit_rest (Evoral::MusicalTime beats)
373 beats = _editor.get_grid_type_as_beats (success, step_edit_insert_position);
379 step_edit_beat_pos += beats;
380 step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
385 StepEditor::step_edit_beat_sync ()
387 step_edit_beat_pos = ceil (step_edit_beat_pos);
388 step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
392 StepEditor::step_edit_bar_sync ()
394 Session* _session = _mtv.session ();
396 if (!_session || !step_edit_region_view || !step_edit_region) {
400 framepos_t fpos = step_edit_region_view->region_beats_to_absolute_frames (step_edit_beat_pos);
401 fpos = _session->tempo_map().round_to_bar (fpos, 1);
402 step_edit_beat_pos = ceil (step_edit_region_view->region_frames_to_region_beats (fpos - step_edit_region->position()));
403 step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
407 StepEditor::playlist_changed ()
409 step_edit_region_connection.disconnect ();
410 _track->playlist()->RegionRemoved.connect (step_edit_region_connection, invalidator (*this),
411 boost::bind (&StepEditor::region_removed, this, _1),
416 StepEditor::region_removed (boost::weak_ptr<Region> wr)
418 boost::shared_ptr<Region> r (wr.lock());
424 if (step_edit_region == r) {
425 step_edit_region.reset();
426 step_edit_region_view = 0;
427 // force a recompute of the insert position
428 step_edit_beat_pos = -1.0;
433 StepEditor::name() const
435 return _track->name();