/*
- audio-item.cc -- implement Audio items.
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1997--2011 Jan Nieuwenhuizen <janneke@gnu.org>
- (c) 1997 Jan Nieuwenhuizen <jan@digicash.com>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#include "audio-item.hh"
+
#include "midi-item.hh"
+#include "audio-column.hh"
+
+Audio_instrument::Audio_instrument (string instrument_string)
+{
+ str_ = instrument_string;
+}
+
+void
+Audio_item::render ()
+{
+}
-Audio_instrument::Audio_instrument (String instrument_str)
- : Audio_item (0)
+Audio_column *
+Audio_item::get_column () const
{
- str_ = instrument_str;
+ return audio_column_;
}
-Midi_item*
-Audio_instrument::midi_item_p()
+Audio_item::Audio_item ()
{
- return new Midi_instrument (0, str_);
+ audio_column_ = 0;
}
-
-Audio_item::Audio_item (Request* req_l)
+
+Audio_note::Audio_note (Pitch p, Moment m, bool tie_event, Pitch transposing)
{
- audio_column_l_ = 0;
- req_l_ = req_l;
+ pitch_ = p;
+ length_mom_ = m;
+ tied_ = 0;
+ transposing_ = transposing;
+ tie_event_ = tie_event;
}
-Audio_key::Audio_key (Request* req_l)
- : Audio_item (req_l)
+void
+Audio_note::tie_to (Audio_note *t, Moment skip)
{
+ tied_ = t;
+ Audio_note *first = t;
+ while (first->tied_)
+ first = first->tied_;
+ // Add the skip to the tied note and the length of the appended note
+ // to the full duration of the tie...
+ first->length_mom_ += skip + length_mom_;
+ length_mom_ = 0;
}
-Midi_item*
-Audio_key::midi_item_p()
+Audio_key::Audio_key (int acc, bool major)
{
- return new Midi_key (this);
+ accidentals_ = acc;
+ major_ = major;
}
+Audio_dynamic::Audio_dynamic ()
+{
+ volume_ = -1;
+}
-Audio_note::Audio_note (Request* req_l)
- : Audio_item (req_l)
+Audio_span_dynamic::Audio_span_dynamic ()
{
+ grow_dir_ = CENTER;
}
-Midi_item*
-Audio_note::midi_item_p()
+void
+Audio_span_dynamic::add_absolute (Audio_dynamic *d)
{
- return new Midi_note (this);
+ assert (d);
+ dynamics_.push_back (d);
}
-Audio_tempo::Audio_tempo (int per_minute_4_i)
- : Audio_item (0)
+Moment
+remap_grace_duration (Moment m)
{
- per_minute_4_i_ = per_minute_4_i;
+ return Moment (m.main_part_ + Rational (9,40) * m.grace_part_,
+ Rational (0));
}
-Midi_item*
-Audio_tempo::midi_item_p()
+Real
+moment_to_real (Moment m)
{
- return new Midi_tempo (this);
+ return remap_grace_duration (m).main_part_.to_double ();
}
-Audio_meter::Audio_meter (Request* req_l)
- : Audio_item (req_l)
+int
+moment_to_ticks (Moment m)
{
+ return int (moment_to_real (m) * 384 * 4);
}
-Midi_item*
-Audio_meter::midi_item_p()
+void
+Audio_span_dynamic::render ()
{
- return new Midi_meter (this);
+ if (dynamics_.size () <= 1)
+ return ;
+
+ assert (dynamics_[0]->volume_ >= 0);
+
+ while (dynamics_.back ()->volume_ > 0
+ && dynamics_.size () > 1
+ && sign (dynamics_.back ()->volume_ - dynamics_[0]->volume_) != grow_dir_)
+ {
+ dynamics_.erase (dynamics_.end () - 1);
+ }
+
+ if (dynamics_.size () <= 1)
+ {
+ programming_error ("Impossible or ambiguous (de)crescendo in MIDI.");
+ return ;
+ }
+
+ Real delta_v = grow_dir_ * 0.1;
+
+ Real start_v = dynamics_[0]->volume_;
+ if (dynamics_.back ()->volume_ < 0)
+ dynamics_.back ()->volume_ = max (min (start_v + grow_dir_ * 0.25, 1.0), 0.1);
+
+ delta_v = dynamics_.back ()->volume_ - dynamics_[0]->volume_;
+
+ Moment start = dynamics_[0]->get_column ()->when ();
+
+ Real total_t = moment_to_real (dynamics_.back ()->get_column ()->when () - start);
+
+ for (vsize i = 1; i < dynamics_.size (); i ++)
+ {
+ Moment dt_moment = dynamics_[i]->get_column ()->when ()
+ - start;
+
+ Real dt = moment_to_real (dt_moment);
+
+ Real v = start_v + delta_v * (dt / total_t);
+
+ dynamics_[i]->volume_ = v;
+ }
}
-Audio_text::Audio_text (Audio_text::Type type, String text_str)
- : Audio_item (0)
+
+
+Audio_tempo::Audio_tempo (int per_minute_4)
{
- text_str_ = text_str;
- type_ = type;
+ per_minute_4_ = per_minute_4;
}
-Midi_item*
-Audio_text::midi_item_p()
+Audio_time_signature::Audio_time_signature (int beats, int one_beat)
{
- return new Midi_text (this);
+ beats_ = beats;
+ one_beat_ = one_beat;
}
+Audio_text::Audio_text (Audio_text::Type type, string text_string)
+{
+ text_string_ = text_string;
+ type_ = type;
+}
-IMPLEMENT_IS_TYPE_B1(Audio_item, Audio_element);