source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
- Jan Nieuwenhuizen <jan@digicash.com>
- */
+ (c) 1997--2008 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-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,
+ int channel)
{
- return sign (left.key - right.key);
+ channel_ = channel;
+ track_ = track;
+ index_ = 0;
+ items_ = audio_staff->audio_items_;
+ vector_sort (items_, audio_item_less);
+ last_tick_ = 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 ()
{
- 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_p)
+ 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_p->duration() + ptr ()->audio_column_l_->at_mom ();
- for (int i=0; i < stop_note_queue.size(); i++)
+ 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;
+ for (vsize 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
- return;
- }
+ /* 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;
+ }
+ }
}
- 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);
+ if (note)
+ {
+ Midi_note_event e;
+ e.val = new Midi_note_off (note);
+
+ midi_events_.push_back (e.val);
+ e.key = int (stop_ticks);
+ stop_note_queue.insert (e);
+
+ if (play_start)
+ output_event (ptr->audio_column_->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)
+ while (stop_note_queue.size () && stop_note_queue.front ().key <= max_ticks)
{
- Midi_note_event e = stop_note_queue.get();
- if (e.ignore_b_)
- continue;
-
- Moment stop_mom = e.key;
- Midi_note_off* note_p = e.val;
-
- output_event (stop_mom, note_p);
+ 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 ()
{
- 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);
+ Audio_item *audio = items_[index_];
+ do_stop_notes (audio->audio_column_->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);
+ }
+ else
+ output_event (audio->audio_column_->ticks (), midi);
+ }
}
+Midi_item*
+Midi_walker::get_midi (Audio_item *i)
+{
+ Midi_item *mi = Midi_item::get_midi (i);
+ 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