Issue 5167/6: Changes: show \markup xxx = ... \etc assignments

[lilypond.git] / lily / include / audio-item.hh

diff --git a/lily/include/audio-item.hh b/lily/include/audio-item.hh
index 5e5d499fbd433d6d1876a1ef98468e2d91b6574e..f3a97a2949d9805f1edc480474f78262fe9c5f3e 100644 (file)
--- a/lily/include/audio-item.hh
+++ b/lily/include/audio-item.hh
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 1996--2012 Jan Nieuwenhuizen <janneke@gnu.org>
+  Copyright (C) 1996--2015 Jan Nieuwenhuizen <janneke@gnu.org>
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -40,26 +40,32 @@ private:
   Audio_item &operator = (Audio_item const &);
 };
 
-class Audio_dynamic : public Audio_item
+// Audio_span_dynamic is open at the end of the interval, so the volume
+// grows/diminshes toward a target, but whether it reaches it depends on the
+// next Audio_span_dynamic in the performance.  For example, a crescendo
+// notated as mf < p is represented as [mf < x) [p ...) i.e. growth to some
+// volume louder than mf followed by an abrupt change to p.
+class Audio_span_dynamic : public Audio_element
 {
 public:
-  Audio_dynamic ();
+  static const Real MINIMUM_VOLUME;
+  static const Real MAXIMUM_VOLUME;
+  static const Real DEFAULT_VOLUME;
 
-  Real volume_;
-  bool silent_;
-};
+private:
+  Moment start_moment_;
+  Real start_volume_;
+  Real duration_; // = target moment - start moment
+  Real gain_; // = target volume - start volume
 
-class Audio_span_dynamic : public Audio_element
-{
 public:
-  Direction grow_dir_;
-  vector<Audio_dynamic *> dynamics_;
-  Real min_volume_;
-  Real max_volume_;
-
-  virtual void render ();
-  void add_absolute (Audio_dynamic *);
-  Audio_span_dynamic (Real min_volume, Real max_volume);
+  Moment get_start_moment () const { return start_moment_; }
+  Real get_start_volume () const { return start_volume_; }
+  Real get_duration () const { return duration_; }
+  void set_end_moment (Moment);
+  void set_volume (Real start, Real target);
+  Real get_volume (Moment) const;
+  Audio_span_dynamic (Moment mom, Real volume);
 };
 
 class Audio_key : public Audio_item
@@ -82,7 +88,7 @@ public:
 class Audio_note : public Audio_item
 {
 public:
-  Audio_note (Pitch p, Moment m, bool tie_event, Pitch transposition);
+  Audio_note (Pitch p, Moment m, bool tie_event, Pitch transposition, int velocity);
 
   // with tieWaitForNote, there might be a skip between the tied notes!
   void tie_to (Audio_note *, Moment skip = 0);
@@ -92,7 +98,8 @@ public:
   Pitch pitch_;
   Moment length_mom_;
   Pitch transposing_;
-  Audio_dynamic *dynamic_;
+  Audio_span_dynamic *dynamic_;
+  int extra_velocity_;
 
   Audio_note *tied_;
   bool tie_event_;
@@ -114,7 +121,7 @@ public:
     MARKER, CUE_POINT
   };
 
-  Audio_text (Audio_text::Type type, string text_string);
+  Audio_text (Audio_text::Type type, const string &text_string);
 
   Type type_;
   string text_string_;
@@ -137,6 +144,15 @@ public:
   int one_beat_;
 };
 
+class Audio_control_change : public Audio_item
+{
+public:
+  Audio_control_change (int control, int value);
+
+  int control_;
+  int value_;
+};
+
 int moment_to_ticks (Moment);
 Real moment_to_real (Moment);
 Moment remap_grace_duration (Moment);