source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
- Jan Nieuwenhuizen <jan@digicash.com>
+ (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include "midi-walker.hh"
Midi_note_event::Midi_note_event()
{
- ignore_b_ = false;
+ 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 );
+ return sign (left.key - right.key);
}
-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_l, Midi_track* track_l)
{
- track_l_ = track_l;
- last_mom_ = 0;
+ track_l_ = track_l;
+ index_= 0;
+ item_l_arr_l_ = &audio_staff_l->audio_item_l_arr_;
+ last_mom_ = 0;
}
Midi_walker::~Midi_walker()
{
- // ugh
- do_stop_notes( last_mom_ + Moment( 10, 1 ) );
+ // ugh
+ do_stop_notes (last_mom_ + Moment (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 )
+Midi_walker::do_start_note (Midi_note* note_p)
{
- 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 = (*item_l_arr_l_)[index_];
+ Moment stop_mom = note_p->length_mom () + 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_p->pitch_i ())
+ {
+ if (stop_note_queue[i].key < stop_mom)
+ stop_note_queue[i].ignore_b_ = true;
+ else {
+ // skip the stopnote
+ delete note_p;
+ return;
+ }
}
}
- 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 );
+ Midi_note_event e;
+ e.val = new Midi_note_off (note_p);
+ e.key = stop_mom;
+ stop_note_queue.insert (e);
+
+ output_event (ptr->audio_column_l_->at_mom (), note_p);
}
/**
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;
+ 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_p = e.val;
- output_event( stop_mom, note_l );
+ output_event (stop_mom, note_p);
}
}
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_ += delta_t;
+ track_l_->add (delta_t, l);
}
void
Midi_walker::process()
{
- do_stop_notes( ptr()->audio_column_l_->at_mom() );
+ Audio_item* audio_p = (*item_l_arr_l_)[index_];
+ do_stop_notes (audio_p->audio_column_l_->at_mom ());
- Midi_item* p = ptr()->midi_item_p();
- if ( !p )
- return;
- 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;
+ /*
+ THIS IS A MEMORY LEAK. FIXME.
+ */
+ //Midi_item* p = ptr->midi_item_p ();
+ if (Midi_item* midi_p = Midi_item::midi_p (audio_p))
+ {
+ midi_p->channel_i_ = track_l_->number_i_;
+ if (Midi_note* note_p = dynamic_cast<Midi_note*>(midi_p))
+ {
+ if (note_p->length_mom ())
+ do_start_note (note_p);
+ }
+ else
+ output_event (audio_p->audio_column_l_->at_mom (), midi_p);
+ }
}
+bool
+Midi_walker::ok () const
+{
+ return index_ <item_l_arr_l_->size ();
+}
+
+void
+Midi_walker::operator ++(int)
+{
+ assert (ok());
+ index_++;
+}