X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fmidi-walker.cc;h=13bf59db8c2e4be028491e5966c1bf0b1b1e490b;hb=bcc48624c73e6036255b5d4f6aaad61f0edd90c3;hp=3709fc755c9eacfe3c35b61bcc7611d798d40de5;hpb=3a46c107cba4b3d2dba74e21f9046cc399c8baf1;p=lilypond.git diff --git a/lily/midi-walker.cc b/lily/midi-walker.cc index 3709fc755c..13bf59db8c 100644 --- a/lily/midi-walker.cc +++ b/lily/midi-walker.cc @@ -3,117 +3,168 @@ source file of the GNU LilyPond music typesetter - (c) 1997--1998 Han-Wen Nienhuys - Jan Nieuwenhuizen - */ + (c) 1997--2006 Han-Wen Nienhuys + Jan Nieuwenhuizen +*/ #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() -{ +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_staff_l->audio_item_l_list_) +Midi_walker::Midi_walker (Audio_staff *audio_staff, Midi_track *track) { - track_l_ = track_l; + track_ = track; + index_ = 0; + items_ = &audio_staff->audio_items_; + last_mom_ = 0; } -Midi_walker::~Midi_walker() -{ +Midi_walker::~Midi_walker () +{ // ugh - do_stop_notes (last_mom_ + Moment (10, 1)); + 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_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->length_mom () + ptr ()->audio_column_l_->at_mom (); - for (int i=0; i < stop_note_queue.size(); i++) + 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 (stop_note_queue[i].val->pitch_i() == note_p->pitch_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) - stop_note_queue[i].ignore_b_ = true; - else { - // skip the stopnote - delete note_p; - return; - } + { + /* 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_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); + 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) { - while (stop_note_queue.size() && stop_note_queue.front ().key <= max_mom) + while (stop_note_queue.size () && stop_note_queue.front ().key <= max_mom) { - Midi_note_event e = stop_note_queue.get(); + Midi_note_event e = stop_note_queue.get (); if (e.ignore_b_) { delete e.val; continue; } - + Moment stop_mom = e.key; - Midi_note_off* note_p = e.val; - - output_event (stop_mom, note_p); + 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 () { - 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 (Midi_note *mi = dynamic_cast(p)) - do_start_note (mi); - else - output_event (ptr()->audio_column_l_->at_mom (), p); + 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)) + { + if (note->get_length ().to_bool ()) + do_start_note (note); + } + else + output_event (audio->audio_column_->at_mom (), midi); + } +} + +bool +Midi_walker::ok () const +{ + return index_ < items_->size (); } +void +Midi_walker::operator ++ (int) +{ + assert (ok ()); + index_++; +}