/*
- midi-walker.cc -- implement Midi_walker
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
-
- (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
Jan Nieuwenhuizen <janneke@gnu.org>
+
+ 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"
}
bool
-audio_item_less (Audio_item * const a,
- Audio_item * const b)
+audio_item_less (Audio_item *const a,
+ Audio_item *const b)
{
- return a->get_column ()->when_ < b->get_column ()->when_;
+ return a->get_column ()->when_ < b->get_column ()->when_;
}
-Midi_walker::Midi_walker (Audio_staff *audio_staff, Midi_track *track,
- int channel)
+Midi_walker::Midi_walker (Audio_staff *audio_staff, Midi_track *track, int start_tick)
{
- channel_ = channel;
track_ = track;
index_ = 0;
items_ = audio_staff->audio_items_;
vector_sort (items_, audio_item_less);
- last_tick_ = 0;
+ //Scores that begin with grace notes start at negative times. This
+ //is OK - MIDI output doesn't use absolute ticks, only differences.
+ last_tick_ = start_tick;
+ percussion_ = audio_staff->percussion_;
+ merge_unisons_ = audio_staff->merge_unisons_;
}
Midi_walker::~Midi_walker ()
{
Audio_item *ptr = items_[index_];
assert (note->audio_ == ptr);
- int stop_ticks = int (moment_to_real (note->audio_->length_mom_) * Real (384 * 4))
- + ptr->audio_column_->ticks ();
-
- bool play_start = true;
+ 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 pith already in queue */
- if (stop_note_queue[i].val->get_semitone_pitch ()
- == note->get_semitone_pitch ())
- {
- if (stop_note_queue[i].key < stop_ticks)
- {
- /* let stopnote in queue be ignored,
- new stop note wins */
- stop_note_queue[i].ignore_ = true;
-
- /* don't replay start note, */
- play_start = false;
- break;
- }
- else
- {
- /* skip this stopnote,
- don't play the start note */
- note = 0;
- break;
- }
- }
+ /* if this pitch already in queue, and is not already ignored */
+ if (!stop_note_queue[i].ignore_ &&
+ 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;
+ }
+ }
}
if (note)
e.val = new Midi_note_off (note);
midi_events_.push_back (e.val);
- e.key = int (stop_ticks);
+ e.key = stop_ticks;
stop_note_queue.insert (e);
- if (play_start)
- output_event (ptr->audio_column_->ticks (), note);
+ output_event (now_ticks, note);
}
}
{
Midi_note_event e = stop_note_queue.get ();
if (e.ignore_)
- {
- continue;
- }
+ {
+ continue;
+ }
int stop_ticks = e.key;
Midi_note *note = e.val;
Midi_walker::process ()
{
Audio_item *audio = items_[index_];
- do_stop_notes (audio->audio_column_->ticks ());
+ Audio_column *col = audio->get_column ();
+ do_stop_notes (col->ticks ());
if (Midi_item *midi = get_midi (audio))
{
- if (Midi_channel_item *mci = dynamic_cast<Midi_channel_item*> (midi))
- mci->channel_ = channel_;
-
if (Midi_note *note = dynamic_cast<Midi_note *> (midi))
- {
- if (note->audio_->length_mom_.to_bool ())
- do_start_note (note);
- }
+ {
+ if (note->audio_->length_mom_.to_bool ())
+ do_start_note (note);
+ }
else
- output_event (audio->audio_column_->ticks (), midi);
+ output_event (audio->audio_column_->ticks (), midi);
}
}
-Midi_item*
+Midi_item *
Midi_walker::get_midi (Audio_item *i)
{
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;
}
}
void
-Midi_walker::operator ++ (int)
+Midi_walker::operator ++(int)
{
assert (ok ());
index_++;
projects / lilypond.git / blobdiff