lily/include/performer.hh

   1 /*
   2   performer.hh -- declare Performer
   3
   4   (c) 1996--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   5                  Jan Nieuwenhuizen <janneke@gnu.org>
   6  */
   7
   8 #ifndef PERFORMER_HH
   9 #define PERFORMER_HH
  10
  11 #include "audio-element-info.hh"
  12 #include "array.hh"
  13 #include "request.hh"
  14 #include "score-element-info.hh"
  15 #include "translator.hh"
  16
  17 /**
  18   Convert a music definition into a audio representation.
  19   A baseclass
  20  */
  21 class Performer : public virtual Translator
  22 {
  23 public:
  24   VIRTUAL_COPY_CONS(Translator);
  25   friend class Performer_group_performer;
  26   Performer_group_performer* daddy_perf_l() const;
  27
  28 protected:
  29   virtual void announce_element (Audio_element_info);
  30   virtual void acknowledge_element (Audio_element_info);
  31   virtual void process_acknowledged ();
  32   virtual int get_tempo_i() const;
  33   virtual void play_element (Audio_element * elem_p );
  34 };
  35
  36
  37 #endif // PERFORMER_HH
  38