lily/performer.cc

   1 /*
   2   performer.cc -- implement Performer
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1996, 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7                Jan Nieuwenhuizen <jan@digicash.com>
   8  */
   9
  10
  11 #include "performer-group-performer.hh"
  12 #include "debug.hh"
  13
  14
  15 IMPLEMENT_IS_TYPE_B(Performer);
  16
  17 Performer::Performer()
  18 {
  19   daddy_perf_l_ = 0;
  20   init_b_ =false;
  21 }
  22
  23 Performer::~Performer()
  24 {
  25 }
  26
  27 void
  28 Performer::do_print() const
  29 {
  30 }
  31
  32 void
  33 Performer::play (Audio_element* p)
  34 {
  35   daddy_perf_l_->play (p);
  36 }
  37
  38 int
  39 Performer::get_tempo_i() const
  40 {
  41   return daddy_perf_l_->get_tempo_i();
  42 }
  43
  44 void
  45 Performer::print() const
  46 {
  47 #ifndef NPRINT
  48   DOUT << "\n" << name() << " {";
  49   do_print();
  50   DOUT << "}";
  51 #endif
  52 }
  53
  54 void
  55 Performer::process_requests()
  56 {
  57 }
  58
  59 bool
  60 Performer::do_try_request (Request* req_l)
  61 {
  62   return false;
  63 }
  64
  65 bool
  66 Performer::try_request (Request*r)
  67 {
  68   if (!init_b_)
  69     {
  70         creation_processing();
  71     }
  72   return do_try_request (r);
  73 }
  74
  75 void
  76 Performer::creation_processing()
  77 {
  78   if (!init_b_)
  79     {
  80         do_creation_processing();
  81         init_b_ = true;
  82     }
  83 }
  84
  85 void
  86 Performer::do_creation_processing()
  87 {
  88 }
  89
  90 void
  91 Performer::do_removal_processing()
  92 {
  93 }