source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
- Jan Nieuwenhuizen <jan@digicash.com>
- */
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ Jan Nieuwenhuizen <janneke@gnu.org>
+*/
#include "midi-walker.hh"
+
#include "audio-column.hh"
-#include "audio-item.hh"
#include "audio-staff.hh"
#include "midi-item.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_b_ = false;
}
int
-compare( Midi_note_event const& left, Midi_note_event const& right )
+compare (Midi_note_event const &left, Midi_note_event const &right)
{
- return sign( left.key - right.key );
+ Moment m = (left.key - right.key);
+
+ if (m < 0)
+ return -1;
+ else if (m > 0)
+ return 1;
+ else
+ return 0;
}
-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 (Audio_staff *audio_staff, Midi_track *track)
{
- track_l_ = track_l;
- last_mom_ = 0;
+ track_ = track;
+ index_ = 0;
+ items_ = &audio_staff->audio_items_;
+
+ last_mom_ = 0;
}
-Midi_walker::~Midi_walker()
-{
- // ugh
- do_stop_notes( last_mom_ + Moment( 10, 1 ) );
+Midi_walker::~Midi_walker ()
+{
+ // ugh
+ do_stop_notes (last_mom_ + Moment (Rational (10, 1)));
}
/**
- 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_];
+ Moment stop_mom = note->get_length () + ptr->audio_column_->at_mom ();
+
+ bool play_start = true;
+ for (vsize i = 0; i < stop_note_queue.size (); i++)
+ {
+ /* if this pith already in queue */
+ if (stop_note_queue[i].val->get_pitch () == note->get_pitch ())
+ {
+ if (stop_note_queue[i].key < stop_mom)
+ {
+ /* let stopnote in queue be ignored,
+ new stop note wins */
+ stop_note_queue[i].ignore_b_ = true;
+ /* don't replay start note, */
+ play_start = false;
+ break;
+ }
+ else
+ {
+ /* skip this stopnote,
+ don't play the start note */
+ delete note;
+ note = 0;
+ 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);
+ e.key = stop_mom;
+ stop_note_queue.insert (e);
+
+ if (play_start)
+ output_event (ptr->audio_column_->at_mom (), note);
+ }
}
/**
- Output note events for all notes which end before #max_mom#
- */
+ 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 (Moment max_mom)
{
- 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_mom)
+ {
+ Midi_note_event e = stop_note_queue.get ();
+ if (e.ignore_b_)
+ {
+ delete e.val;
+ continue;
+ }
+
+ Moment stop_mom = e.key;
+ Midi_note *note = e.val;
+
+ output_event (stop_mom, note);
}
}
-/**
- Advance the track to #now#, output the item, and adjust current "moment".
- */
+/**
+ 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 (Moment now_mom, Midi_item *l)
{
- Moment delta_t = now_mom - last_mom_ ;
- last_mom_ += delta_t;
- track_l_->add( delta_t, l );
+ Moment delta_t = now_mom - last_mom_;
+ last_mom_ = now_mom;
+
+ /*
+ this is not correct, but at least it doesn't crash when you
+ start with graces
+ */
+ if (delta_t < Moment (0))
+ delta_t = Moment (0);
+
+ track_->add (delta_t, l);
}
void
-Midi_walker::process()
+Midi_walker::process ()
+{
+ Audio_item *audio = (*items_)[index_];
+ do_stop_notes (audio->audio_column_->at_mom ());
+
+ if (Midi_item *midi = Midi_item::get_midi (audio))
+ {
+ midi->channel_ = track_->channel_;
+ //midi->channel_ = track_->number_;
+ if (Midi_note *note = dynamic_cast<Midi_note *> (midi))
+ {
+ if (note->get_length ().to_bool ())
+ do_start_note (note);
+ }
+ else
+ output_event (audio->audio_column_->at_mom (), midi);
+ }
+}
+
+bool
+Midi_walker::ok () const
{
- 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;
+ return index_ < items_->size ();
}
+void
+Midi_walker::operator ++ (int)
+{
+ assert (ok ());
+ index_++;
+}
projects / lilypond.git / blobdiff