Run `make grand-replace'.

[lilypond.git] / lily / audio-item.cc

diff --git a/lily/audio-item.cc b/lily/audio-item.cc
index bdcf76b57f7852660d359d00e9051355d26d954a..b351a576252761a27f73ac45fb9e6bc70f962417 100644 (file)
--- a/lily/audio-item.cc
+++ b/lily/audio-item.cc
@@ -3,57 +3,148 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1997--2004 Jan Nieuwenhuizen <janneke@gnu.org>
+  (c) 1997--2008 Jan Nieuwenhuizen <janneke@gnu.org>
 */
 
 #include "audio-item.hh"
+
 #include "midi-item.hh"
 #include "audio-column.hh"
 
-Audio_instrument::Audio_instrument (String instrument_string)
+Audio_instrument::Audio_instrument (string instrument_string)
 {
   str_ = instrument_string;
 }
 
+void
+Audio_item::render ()
+{
+}
+
+Audio_column *
+Audio_item::get_column () const
+{
+  return audio_column_;
+}
+
 Audio_item::Audio_item ()
 {
   audio_column_ = 0;
 }
 
-Audio_note::Audio_note (Pitch p, Moment m, int transposing_i)
+Audio_note::Audio_note (Pitch p, Moment m, bool tie_event, Pitch transposing)
 {
   pitch_ = p;
   length_mom_ = m;
   tied_ = 0;
-  transposing_ = transposing_i;
+  transposing_ = transposing;
+  tie_event_ = tie_event;
 }
 
 void
-Audio_note::tie_to (Audio_note* t)
+Audio_note::tie_to (Audio_note *t)
 {
   tied_ = t;
-  Audio_note* first = t;
+  Audio_note *first = t;
   while (first->tied_)
     first = first->tied_;
   first->length_mom_ += length_mom_;
   length_mom_ = 0;
 }
 
-                   
 Audio_key::Audio_key (int acc, bool major)
 {
-  accidentals_=acc;
-  major_=major;
+  accidentals_ = acc;
+  major_ = major;
+}
+
+Audio_dynamic::Audio_dynamic ()
+{
+  volume_ = -1;
+}
+
+Audio_span_dynamic::Audio_span_dynamic ()
+{
+  grow_dir_ = CENTER;
+}
+
+void
+Audio_span_dynamic::add_absolute (Audio_dynamic *d)
+{
+  assert (d);
+  dynamics_.push_back (d);
+}
+
+Moment
+remap_grace_duration (Moment m)
+{
+  return Moment (m.main_part_ + Rational (9,40) * m.grace_part_,
+                Rational (0));
+}
+
+Real
+moment_to_real (Moment m)
+{
+  return remap_grace_duration (m).main_part_.to_double ();
 }
 
-Audio_dynamic::Audio_dynamic (Real volume)
+int
+moment_to_ticks (Moment m)
 {
-  volume_ = volume;
+  return int (moment_to_real (m) * 384 * 4);
 }
 
-Audio_tempo::Audio_tempo (int per_minute_4_i)
+void
+Audio_span_dynamic::render ()
+{
+  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 ("(de)crescendo on items with specified volume.");
+      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_tempo::Audio_tempo (int per_minute_4)
 {
-  per_minute_4_ = per_minute_4_i;
+  per_minute_4_ = per_minute_4;
 }
 
 Audio_time_signature::Audio_time_signature (int beats, int one_beat)
@@ -62,7 +153,7 @@ Audio_time_signature::Audio_time_signature (int beats, int one_beat)
   one_beat_ = one_beat;
 }
 
-Audio_text::Audio_text (Audio_text::Type type, String text_string)
+Audio_text::Audio_text (Audio_text::Type type, string text_string)
 {
   text_string_ = text_string;
   type_ = type;