/*
midi-walker.cc -- implement Midi_walker
- source file of the LilyPond music typesetter
+ source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>, Jan Nieuwenhuizen <jan@digicash.com>
-*/
+ (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ Jan Nieuwenhuizen <jan@digicash.com>
+ */
-#include "command-request.hh"
-#include "musical-request.hh"
-#include "p-score.hh"
-#include "staff.hh"
#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 "staff-column.hh"
-Midi_walker::Midi_walker(Staff *st_l, Midi_track* track_l)
- : PCursor<Staff_column*>(st_l->cols_)
+Midi_note_event::Midi_note_event()
+{
+ ignore_b_ = false;
+}
+
+int
+compare( Midi_note_event const& left, Midi_note_event const& right )
{
- track_l_ = track_l;
- last_moment_= 0;
+ return sign( left.key - right.key );
}
-/**
- output notestop events for all notes which end before #max_moment#
- */
-void
-Midi_walker::do_stop_notes(Moment max_moment)
+Midi_walker::Midi_walker( Audio_staff* audio_staff_l, Midi_track* track_l )
+ : PCursor<Audio_item*>( audio_staff_l->audio_item_l_list_ )
{
- while (stop_notes.size() && stop_notes.front().key <= max_moment) {
- Note_event ent=stop_notes.get();
- if (ent.ignore_b_)
- continue;
-
- Moment stop_moment = ent.key;
- Melodic_req * req_l = ent.val;
-
- Midi_note note(req_l, track_l_->number_i_, false);
- output_event(note, stop_moment);
- }
+ track_l_ = track_l;
+ last_mom_ = 0;
+}
+
+Midi_walker::~Midi_walker()
+{
+ // ugh
+ do_stop_notes( last_mom_ + Moment( 10, 1 ) );
}
+
/**
- Find out if start_note event is needed, and do it if needed.
+ Find out if start_note event is needed, and do it if needed.
*/
void
-Midi_walker::do_start_note(Note_req*note_l)
+Midi_walker::do_start_note( Midi_note* note_l )
{
- Moment stop = note_l->duration() + ptr()->when();
- for(int i=0; i < stop_notes.size(); i++) {
- if (stop_notes[i].val->melodic()->pitch() ==
- note_l->pitch()) {
- if ( stop_notes[i].key < stop){
- stop_notes[i].ignore_b_=true;
- }
- else
- return; // skip the stop 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;
}
}
- Note_event e;
- e.val = note_l;
- e.key = stop;
-
- stop_notes.insert(e);
-
- Midi_note note(note_l, track_l_->number_i_, true);
- output_event(note, ptr()->when());
-}
-
-/** advance the track to #now#, output the item, and adjust current
- "moment". */
-void
-Midi_walker::output_event(Midi_item &i, Moment now)
-{
- Moment delta_t = now - last_moment_ ;
- last_moment_ += delta_t;
- track_l_->add(delta_t, &i );
+ 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 );
}
+/**
+ Output note events for all notes which end before #max_mom#
+ */
void
-Midi_walker::process_requests()
+Midi_walker::do_stop_notes( Moment max_mom )
{
- do_stop_notes(ptr()->when());
-
- for ( int i = 0; i < ptr()->commandreq_l_arr_.size(); i++ ) {
- Command_req *c_l = ptr()->commandreq_l_arr_[i]->command();
- Meter_change_req* meter_l = c_l->meterchange();
- if ( meter_l )
- output_event( Midi_time( meter_l->beats_i_, meter_l->one_beat_i_, 18 ), ptr()->when() );
- Key_change_req* key_l = c_l->keychange();
- if ( key_l ) {
- int sharps_i = key_l->sharps_i();
- int flats_i = key_l->flats_i();
- // midi cannot handle non-conventional keys
- if ( !( flats_i && sharps_i ) )
- output_event( Midi_key( sharps_i - flats_i, key_l->minor_b() ), ptr()->when() );
- }
- }
-
- for ( int i = 0; i < ptr()->musicalreq_l_arr_.size(); i++ ) {
- Rhythmic_req *n = ptr()->musicalreq_l_arr_[i]->rhythmic();
- if ( !n)
- continue;
- Note_req * note_l = n->note();
- if (!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_ )
continue;
- do_start_note(note_l);
+
+ Moment stop_mom = e.key;
+ Midi_note_off* note_l = e.val;
+
+ output_event( stop_mom, note_l );
}
}
-Midi_walker::~Midi_walker()
+/**
+ Advance the track to #now#, output the item, and adjust current "moment".
+ */
+void
+Midi_walker::output_event( Moment now_mom, Midi_item* l )
{
- do_stop_notes( last_moment_ + Moment(10,1)); // ugh
+ Moment delta_t = now_mom - last_mom_ ;
+ last_mom_ += delta_t;
+ track_l_->add( delta_t, l );
}
-
-int
-compare(Note_event const&e1, Note_event const&e2)
+void
+Midi_walker::process()
{
- return sign(e1.key - e2.key);
+ do_stop_notes( ptr()->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;
}
+
projects / lilypond.git / blobdiff