X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Finclude%2Faudio-item.hh;h=ae5c96ae95e549264a36f8808cedab6e06eb9aaa;hb=14f464d957b6a68710f0364fc7507b63eb0fcee6;hp=aeb4712d35bee262a39f10bb8f06ae971fafafe1;hpb=a6bd229f7fe1dc4a03478e14ccc0c0c66b225061;p=lilypond.git

diff --git a/lily/include/audio-item.hh b/lily/include/audio-item.hh
index aeb4712d35..ae5c96ae95 100644
--- 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--2010 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
@@ -27,38 +27,45 @@
 class Audio_item : public Audio_element
 {
 public:
-  Audio_item ();
   Audio_column *audio_column_;
+  int channel_;
+
+  Audio_item ();
   Audio_column *get_column () const;
 
   virtual void render ();
-  
+
 private:
   Audio_item (Audio_item const &);
   Audio_item &operator = (Audio_item const &);
 };
 
-class Audio_dynamic : public Audio_item
-{
-public:
-  Audio_dynamic ();
-
-  Real volume_;
-};
-
+// 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:
-  Direction grow_dir_;
-  vector<Audio_dynamic*> dynamics_;
+  static const Real MINIMUM_VOLUME = 0.0;
+  static const Real MAXIMUM_VOLUME = 1.0;
+  static const Real DEFAULT_VOLUME = 90.0 / 127.0;
 
+private:
+  Moment start_moment_;
+  Real start_volume_;
+  Real duration_; // = target moment - start moment
+  Real gain_; // = target volume - start volume
 
-  virtual void render ();
-  void add_absolute (Audio_dynamic*);
-  Audio_span_dynamic ();
+public:
+  Real get_start_volume () const { return start_volume_; }
+  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
 {
 public:
@@ -79,15 +86,19 @@ 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);
+  Audio_note *tie_head ();
+  virtual string to_string () const;
 
   Pitch pitch_;
   Moment length_mom_;
   Pitch transposing_;
-  
+  Audio_span_dynamic *dynamic_;
+  int extra_velocity_;
+
   Audio_note *tied_;
   bool tie_event_;
 };
@@ -103,12 +114,12 @@ class Audio_text : public Audio_item
 {
 public:
   enum Type
-    {
-      TEXT = 1, COPYRIGHT, TRACK_NAME, INSTRUMENT_NAME, LYRIC,
-      MARKER, CUE_POINT
-    };
+  {
+    TEXT = 1, COPYRIGHT, TRACK_NAME, INSTRUMENT_NAME, LYRIC,
+    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_;
@@ -131,6 +142,38 @@ public:
   int one_beat_;
 };
 
+class Audio_control_function_value_change : public Audio_item
+{
+public:
+  // Supported control functions.
+  enum Control
+  {
+    BALANCE = 0, PAN_POSITION, EXPRESSION, REVERB_LEVEL, CHORUS_LEVEL,
+    // pseudo value for representing the size of the enum; must be kept last
+    NUM_CONTROLS
+  };
+
+  Audio_control_function_value_change (Control control, Real value);
+
+  // Information about a context property corresponding to a control function
+  // (name, the corresponding enumeration value, and the allowed range for the
+  // value of the context property).
+  struct Context_property
+  {
+    const char *name_;
+    Control control_;
+    Real range_min_;
+    Real range_max_;
+  };
+
+  // Mapping from supported control functions to the corresponding context
+  // properties.
+  static const Context_property context_properties_[];
+
+  Control control_;
+  Real value_;
+};
+
 int moment_to_ticks (Moment);
 Real moment_to_real (Moment);
 Moment remap_grace_duration (Moment);