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     mtor << "\n" << name() << " {";
  49     do_print();
  50     mtor << "}";
  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         creation_processing();
  70     }
  71     return do_try_request(r);
  72 }
  73
  74 void
  75 Performer::creation_processing()
  76 {
  77     if (!init_b_) {
  78         do_creation_processing();
  79         init_b_ = true;
  80     }
  81 }
  82
  83 void
  84 Performer::do_creation_processing()
  85 {
  86 }
  87
  88 void
  89 Performer::do_removal_processing()
  90 {
  91 }