/*
- midi-walker.cc -- implement Midi_walker
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1997--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ Jan Nieuwenhuizen <janneke@gnu.org>
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
- Jan Nieuwenhuizen <jan@digicash.com>
- */
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
+*/
#include "midi-walker.hh"
+
#include "audio-column.hh"
-#include "audio-item.hh"
#include "audio-staff.hh"
#include "midi-item.hh"
+#include "midi-chunk.hh"
#include "midi-stream.hh"
-#include "debug.hh"
+#include "warn.hh"
-Midi_note_event::Midi_note_event()
-{
- ignore_b_ = false;
+Midi_note_event::Midi_note_event ()
+{
+ ignore_ = false;
}
int
-compare( Midi_note_event const& left, Midi_note_event const& right )
+compare (Midi_note_event const &left, Midi_note_event const &right)
+{
+ Moment m = (left.key - right.key);
+
+ if (m < 0)
+ return -1;
+ else if (m > 0)
+ return 1;
+ else
+ return 0;
+}
+
+bool
+audio_item_less (Audio_item *const a,
+ Audio_item *const b)
+{
+ return a->get_column ()->when_ < b->get_column ()->when_;
+}
+
+Midi_walker::Midi_walker (Audio_staff *audio_staff, Midi_track *track)
{
- return sign( left.key - right.key );
+ track_ = track;
+ index_ = 0;
+ items_ = audio_staff->audio_items_;
+ vector_sort (items_, audio_item_less);
+ last_tick_ = 0;
+ percussion_ = audio_staff->percussion_;
+ merge_unisons_ = audio_staff->merge_unisons_;
}
-Midi_walker::Midi_walker( Audio_staff* audio_staff_l, Midi_track* track_l )
- : PCursor<Audio_item*>( audio_staff_l->audio_item_l_list_ )
+Midi_walker::~Midi_walker ()
{
- track_l_ = track_l;
- last_mom_ = 0;
+ junk_pointers (midi_events_);
}
-Midi_walker::~Midi_walker()
-{
- // ugh
- do_stop_notes( last_mom_ + Moment( 10, 1 ) );
+void
+Midi_walker::finalize ()
+{
+ do_stop_notes (INT_MAX);
}
/**
- Find out if start_note event is needed, and do it if needed.
- */
-void
-Midi_walker::do_start_note( Midi_note* note_l )
+ Find out if start_note event is needed, and do it if needed.
+*/
+void
+Midi_walker::do_start_note (Midi_note *note)
{
- Moment stop_mom = note_l->duration() + ptr()->audio_column_l_->at_mom();
- for ( int i=0; i < stop_note_queue.size(); i++ ) {
- if ( stop_note_queue[ i ].val->pitch_i() == note_l->pitch_i() ) {
- if ( stop_note_queue[ i ].key < stop_mom )
- stop_note_queue[ i ].ignore_b_ = true;
- else // skip the stopnote
- return;
- }
+ Audio_item *ptr = items_[index_];
+ assert (note->audio_ == ptr);
+ int now_ticks = ptr->audio_column_->ticks ();
+ int stop_ticks = int (moment_to_real (note->audio_->length_mom_) *
+ Real (384 * 4)) + now_ticks;
+ for (vsize i = 0; i < stop_note_queue.size (); i++)
+ {
+ /* if this pitch already in queue */
+ if (stop_note_queue[i].val->get_semitone_pitch ()
+ == note->get_semitone_pitch ())
+ {
+ int queued_ticks
+ = stop_note_queue[i].val->audio_->audio_column_->ticks ();
+ // If the two notes started at the same time, or option is set,
+ if (now_ticks == queued_ticks || merge_unisons_)
+ {
+ // merge them.
+ if (stop_note_queue[i].key < stop_ticks)
+ {
+ Midi_note_event e;
+ e.val = stop_note_queue[i].val;
+ e.key = stop_ticks;
+ stop_note_queue[i].ignore_ = true;
+ stop_note_queue.insert (e);
+ }
+ note = 0;
+ break;
+ }
+ else
+ {
+ // A note was played that interruped a played note.
+ // Stop the old note, and continue to the greatest moment
+ // between the two.
+ if (stop_note_queue[i].key > stop_ticks)
+ {
+ stop_ticks = stop_note_queue[i].key;
+ }
+ output_event (now_ticks, stop_note_queue[i].val);
+ stop_note_queue[i].ignore_ = true;
+ break;
+ }
+ }
}
- Midi_note_event e;
- e.val = new Midi_note_off( note_l );
- e.key = stop_mom;
- stop_note_queue.insert( e );
-
- output_event( ptr()->audio_column_l_->at_mom(), note_l );
+ if (note)
+ {
+ Midi_note_event e;
+ e.val = new Midi_note_off (note);
+
+ midi_events_.push_back (e.val);
+ e.key = stop_ticks;
+ stop_note_queue.insert (e);
+
+ output_event (now_ticks, note);
+ }
}
-/**
- Output note events for all notes which end before #max_mom#
- */
void
-Midi_walker::do_stop_notes( Moment max_mom )
+Midi_walker::do_stop_notes (int max_ticks)
{
- while ( stop_note_queue.size() && stop_note_queue.front().key <= max_mom ) {
- Midi_note_event e = stop_note_queue.get();
- if ( e.ignore_b_ )
- continue;
-
- Moment stop_mom = e.key;
- Midi_note_off* note_l = e.val;
-
- output_event( stop_mom, note_l );
+ while (stop_note_queue.size () && stop_note_queue.front ().key <= max_ticks)
+ {
+ Midi_note_event e = stop_note_queue.get ();
+ if (e.ignore_)
+ {
+ continue;
+ }
+
+ int stop_ticks = e.key;
+ Midi_note *note = e.val;
+
+ output_event (stop_ticks, note);
}
}
-/**
- Advance the track to #now#, output the item, and adjust current "moment".
- */
void
-Midi_walker::output_event( Moment now_mom, Midi_item* l )
+Midi_walker::output_event (int now_ticks, Midi_item *l)
{
- Moment delta_t = now_mom - last_mom_ ;
- last_mom_ += delta_t;
- track_l_->add( delta_t, l );
+ int delta_ticks = now_ticks - last_tick_;
+ last_tick_ = now_ticks;
+
+ /*
+ this is not correct, but at least it doesn't crash when you
+ start with graces
+ */
+ if (delta_ticks < 0)
+ {
+ programming_error ("Going back in MIDI time.");
+ delta_ticks = 0;
+ }
+
+ track_->add (delta_ticks, l);
}
void
-Midi_walker::process()
+Midi_walker::process ()
+{
+ Audio_item *audio = items_[index_];
+ do_stop_notes (audio->audio_column_->ticks ());
+
+ if (Midi_item *midi = get_midi (audio))
+ {
+ if (Midi_note *note = dynamic_cast<Midi_note *> (midi))
+ {
+ if (note->audio_->length_mom_.to_bool ())
+ do_start_note (note);
+ }
+ else
+ output_event (audio->audio_column_->ticks (), midi);
+ }
+}
+
+Midi_item *
+Midi_walker::get_midi (Audio_item *i)
{
- do_stop_notes( ptr()->audio_column_l_->at_mom() );
-
- Midi_item* p = ptr()->midi_item_p();
- p->channel_i_ = track_l_->number_i_;
-
- if ( p->name() != Midi_note::static_name() )
- output_event( ptr()->audio_column_l_->at_mom(), p );
- else
- do_start_note( (Midi_note*)p );
-
- delete p;
+ Midi_item *mi = Midi_item::get_midi (i);
+
+ if (percussion_)
+ if (Midi_channel_item *mci = dynamic_cast<Midi_channel_item *> (mi))
+ mci->channel_ = 9;
+
+ midi_events_.push_back (mi);
+ return mi;
}
+bool
+Midi_walker::ok () const
+{
+ return index_ < items_.size ();
+}
+
+void
+Midi_walker::operator ++(int)
+{
+ assert (ok ());
+ index_++;
+}
projects / lilypond.git / blobdiff