435 lines
12 KiB
C++
435 lines
12 KiB
C++
/*
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Copyright (C) 2012 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "ardour/midi_track.h"
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#include "ardour/midi_region.h"
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#include "ardour/tempo.h"
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#include "ardour/types.h"
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#include "gui_thread.h"
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#include "midi_region_view.h"
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#include "public_editor.h"
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#include "step_editor.h"
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#include "step_entry.h"
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using namespace ARDOUR;
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using namespace Gtk;
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using namespace std;
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StepEditor::StepEditor (PublicEditor& e, boost::shared_ptr<MidiTrack> t, MidiTimeAxisView& mtv)
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: _editor (e)
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, _track (t)
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, step_editor (0)
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, _mtv (mtv)
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{
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step_edit_insert_position = 0;
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_step_edit_triplet_countdown = 0;
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_step_edit_within_chord = 0;
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_step_edit_chord_duration = 0.0;
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step_edit_region_view = 0;
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_track->PlaylistChanged.connect (*this, invalidator (*this),
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boost::bind (&StepEditor::playlist_changed, this),
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gui_context());
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playlist_changed ();
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}
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StepEditor::~StepEditor()
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{
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delete step_editor;
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}
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void
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StepEditor::start_step_editing ()
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{
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_step_edit_triplet_countdown = 0;
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_step_edit_within_chord = 0;
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_step_edit_chord_duration = 0.0;
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step_edit_region.reset ();
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step_edit_region_view = 0;
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last_added_pitch = -1;
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last_added_end = 0;
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resync_step_edit_position ();
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prepare_step_edit_region ();
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reset_step_edit_beat_pos ();
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assert (step_edit_region);
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assert (step_edit_region_view);
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if (step_editor == 0) {
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step_editor = new StepEntry (*this);
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step_editor->signal_delete_event().connect (sigc::mem_fun (*this, &StepEditor::step_editor_hidden));
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step_editor->signal_hide().connect (sigc::mem_fun (*this, &StepEditor::step_editor_hide));
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}
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step_edit_region_view->show_step_edit_cursor (step_edit_beat_pos);
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step_edit_region_view->set_step_edit_cursor_width (step_editor->note_length());
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step_editor->present ();
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}
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void
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StepEditor::resync_step_edit_position ()
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{
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step_edit_insert_position = _editor.get_preferred_edit_position ();
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}
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void
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StepEditor::resync_step_edit_to_edit_point ()
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{
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resync_step_edit_position ();
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if (step_edit_region) {
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reset_step_edit_beat_pos ();
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}
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}
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void
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StepEditor::prepare_step_edit_region ()
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{
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boost::shared_ptr<Region> r = _track->playlist()->top_region_at (step_edit_insert_position);
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if (r) {
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step_edit_region = boost::dynamic_pointer_cast<MidiRegion>(r);
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}
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if (step_edit_region) {
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RegionView* rv = _mtv.midi_view()->find_view (step_edit_region);
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step_edit_region_view = dynamic_cast<MidiRegionView*> (rv);
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} else {
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const Meter& m = _mtv.session()->tempo_map().meter_at (step_edit_insert_position);
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const Tempo& t = _mtv.session()->tempo_map().tempo_at (step_edit_insert_position);
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step_edit_region = _mtv.add_region (step_edit_insert_position, floor (m.frames_per_bar (t, _mtv.session()->frame_rate())), true);
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RegionView* rv = _mtv.midi_view()->find_view (step_edit_region);
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step_edit_region_view = dynamic_cast<MidiRegionView*>(rv);
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}
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}
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void
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StepEditor::reset_step_edit_beat_pos ()
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{
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assert (step_edit_region);
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assert (step_edit_region_view);
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framecnt_t frames_from_start = _editor.get_preferred_edit_position() - step_edit_region->position();
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if (frames_from_start < 0) {
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/* this can happen with snap enabled, and the edit point == Playhead. we snap the
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position of the new region, and it can end up after the edit point.
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*/
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frames_from_start = 0;
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}
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step_edit_beat_pos = step_edit_region_view->region_frames_to_region_beats (frames_from_start);
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step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
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}
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bool
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StepEditor::step_editor_hidden (GdkEventAny*)
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{
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step_editor_hide ();
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return true;
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}
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void
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StepEditor::step_editor_hide ()
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{
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/* everything else will follow the change in the model */
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_track->set_step_editing (false);
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}
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void
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StepEditor::stop_step_editing ()
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{
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if (step_editor) {
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step_editor->hide ();
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}
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if (step_edit_region_view) {
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step_edit_region_view->hide_step_edit_cursor();
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}
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step_edit_region.reset ();
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}
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void
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StepEditor::check_step_edit ()
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{
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MidiRingBuffer<framepos_t>& incoming (_track->step_edit_ring_buffer());
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uint8_t* buf;
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uint32_t bufsize = 32;
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buf = new uint8_t[bufsize];
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while (incoming.read_space()) {
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framepos_t time;
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Evoral::EventType type;
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uint32_t size;
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incoming.read_prefix (&time, &type, &size);
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if (size > bufsize) {
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delete [] buf;
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bufsize = size;
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buf = new uint8_t[bufsize];
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}
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incoming.read_contents (size, buf);
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if ((buf[0] & 0xf0) == MIDI_CMD_NOTE_ON) {
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step_add_note (buf[0] & 0xf, buf[1], buf[2], 0.0);
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}
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}
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}
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int
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StepEditor::step_add_bank_change (uint8_t /*channel*/, uint8_t /*bank*/)
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{
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return 0;
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}
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int
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StepEditor::step_add_program_change (uint8_t /*channel*/, uint8_t /*program*/)
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{
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return 0;
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}
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void
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StepEditor::step_edit_sustain (Evoral::MusicalTime beats)
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{
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if (step_edit_region_view) {
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step_edit_region_view->step_sustain (beats);
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}
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}
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void
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StepEditor::move_step_edit_beat_pos (Evoral::MusicalTime beats)
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{
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if (beats > 0.0) {
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step_edit_beat_pos = min (step_edit_beat_pos + beats,
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step_edit_region_view->region_frames_to_region_beats (step_edit_region->length()));
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} else if (beats < 0.0) {
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if (-beats < step_edit_beat_pos) {
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step_edit_beat_pos += beats; // its negative, remember
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} else {
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step_edit_beat_pos = 0;
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}
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}
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step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
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}
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int
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StepEditor::step_add_note (uint8_t channel, uint8_t pitch, uint8_t velocity, Evoral::MusicalTime beat_duration)
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{
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/* do these things in case undo removed the step edit region
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*/
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if (!step_edit_region) {
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resync_step_edit_position ();
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prepare_step_edit_region ();
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reset_step_edit_beat_pos ();
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step_edit_region_view->show_step_edit_cursor (step_edit_beat_pos);
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step_edit_region_view->set_step_edit_cursor_width (step_editor->note_length());
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}
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assert (step_edit_region);
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assert (step_edit_region_view);
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if (beat_duration == 0.0) {
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bool success;
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beat_duration = _editor.get_grid_type_as_beats (success, step_edit_insert_position);
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if (!success) {
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return -1;
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}
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}
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MidiStreamView* msv = _mtv.midi_view();
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/* make sure its visible on the vertical axis */
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if (pitch < msv->lowest_note() || pitch > msv->highest_note()) {
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msv->update_note_range (pitch);
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msv->set_note_range (MidiStreamView::ContentsRange);
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}
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/* make sure its visible on the horizontal axis */
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framepos_t fpos = step_edit_region_view->region_beats_to_absolute_frames (step_edit_beat_pos + beat_duration);
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if (fpos >= (_editor.leftmost_position() + _editor.current_page_frames())) {
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_editor.reset_x_origin (fpos - (_editor.current_page_frames()/4));
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}
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Evoral::MusicalTime at = step_edit_beat_pos;
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Evoral::MusicalTime len = beat_duration;
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if ((last_added_pitch >= 0) && (pitch == last_added_pitch) && (last_added_end == step_edit_beat_pos)) {
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/* avoid any apparent note overlap - move the start of this note
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up by 1 tick from where the last note ended
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*/
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at += 1.0/Timecode::BBT_Time::ticks_per_beat;
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len -= 1.0/Timecode::BBT_Time::ticks_per_beat;
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}
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step_edit_region_view->step_add_note (channel, pitch, velocity, at, len);
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last_added_pitch = pitch;
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last_added_end = at+len;
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if (_step_edit_triplet_countdown > 0) {
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_step_edit_triplet_countdown--;
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if (_step_edit_triplet_countdown == 0) {
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_step_edit_triplet_countdown = 3;
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}
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}
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if (!_step_edit_within_chord) {
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step_edit_beat_pos += beat_duration;
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step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
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} else {
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step_edit_beat_pos += 1.0/Timecode::BBT_Time::ticks_per_beat; // tiny, but no longer overlapping
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_step_edit_chord_duration = max (_step_edit_chord_duration, beat_duration);
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}
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return 0;
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}
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void
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StepEditor::set_step_edit_cursor_width (Evoral::MusicalTime beats)
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{
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if (step_edit_region_view) {
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step_edit_region_view->set_step_edit_cursor_width (beats);
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}
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}
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bool
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StepEditor::step_edit_within_triplet() const
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{
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return _step_edit_triplet_countdown > 0;
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}
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bool
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StepEditor::step_edit_within_chord() const
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{
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return _step_edit_within_chord;
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}
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void
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StepEditor::step_edit_toggle_triplet ()
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{
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if (_step_edit_triplet_countdown == 0) {
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_step_edit_within_chord = false;
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_step_edit_triplet_countdown = 3;
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} else {
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_step_edit_triplet_countdown = 0;
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}
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}
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void
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StepEditor::step_edit_toggle_chord ()
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{
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if (_step_edit_within_chord) {
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_step_edit_within_chord = false;
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step_edit_beat_pos += _step_edit_chord_duration;
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step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
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} else {
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_step_edit_triplet_countdown = 0;
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_step_edit_within_chord = true;
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}
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}
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void
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StepEditor::step_edit_rest (Evoral::MusicalTime beats)
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{
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bool success;
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if (beats == 0.0) {
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beats = _editor.get_grid_type_as_beats (success, step_edit_insert_position);
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} else {
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success = true;
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}
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if (success) {
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step_edit_beat_pos += beats;
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step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
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}
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}
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void
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StepEditor::step_edit_beat_sync ()
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{
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step_edit_beat_pos = ceil (step_edit_beat_pos);
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step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
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}
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void
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StepEditor::step_edit_bar_sync ()
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{
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Session* _session = _mtv.session ();
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if (!_session || !step_edit_region_view || !step_edit_region) {
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return;
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}
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framepos_t fpos = step_edit_region_view->region_beats_to_absolute_frames (step_edit_beat_pos);
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fpos = _session->tempo_map().round_to_bar (fpos, 1);
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step_edit_beat_pos = ceil (step_edit_region_view->region_frames_to_region_beats (fpos - step_edit_region->position()));
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step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
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}
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void
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StepEditor::playlist_changed ()
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{
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step_edit_region_connection.disconnect ();
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_track->playlist()->RegionRemoved.connect (step_edit_region_connection, invalidator (*this),
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boost::bind (&StepEditor::region_removed, this, _1),
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gui_context());
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}
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void
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StepEditor::region_removed (boost::weak_ptr<Region> wr)
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{
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boost::shared_ptr<Region> r (wr.lock());
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if (!r) {
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return;
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}
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if (step_edit_region == r) {
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step_edit_region.reset();
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step_edit_region_view = 0;
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// force a recompute of the insert position
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step_edit_beat_pos = -1.0;
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}
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}
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string
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StepEditor::name() const
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{
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return _track->name();
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}
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