Issue 4938 (1/3) Add Audio_item and Midi_item subclasses for control changes

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

diff --git a/lily/midi-item.cc b/lily/midi-item.cc
index 7f064e24a85608b4960edce548e96b0733064944..47ccd787c3533d091fb839d2e4a5bcdf0891165e 100644 (file)
--- a/lily/midi-item.cc
+++ b/lily/midi-item.cc
@@ -54,6 +54,8 @@ Midi_item::get_midi (Audio_item *a)
   else if (Audio_control_function_value_change *i
            = dynamic_cast<Audio_control_function_value_change *> (a))
     return new Midi_control_function_value_change (i);
+  else if (Audio_control_change *i = dynamic_cast<Audio_control_change *> (a))
+    return new Midi_control_change (i);
   else
     assert (0);
 
@@ -111,6 +113,12 @@ Midi_control_function_value_change
 {
 }
 
+Midi_control_change::Midi_control_change (Audio_control_change *ai)
+  : Midi_channel_item (ai),
+    audio_ (ai)
+{
+}
+
 Midi_item::~Midi_item ()
 {
 }
@@ -123,6 +131,10 @@ Midi_control_function_value_change::~Midi_control_function_value_change ()
 {
 }
 
+Midi_control_change::~Midi_control_change ()
+{
+}
+
 string
 int2midi_varint_string (int i)
 {
@@ -388,6 +400,16 @@ Midi_control_function_value_change::to_string () const
   return str;
 }
 
+string
+Midi_control_change::to_string () const
+{
+  Byte status_byte = (char) (0xB0 + channel_);
+  string str = ::to_string ((char)status_byte);
+  str += ::to_string ((char) (audio_->control_));
+  str += ::to_string ((char) (audio_->value_));
+  return str;
+}
+
 char const *
 Midi_item::name () const
 {