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 Moment
  33 Performer::get_mom() const
  34 {
  35     return daddy_perf_l_->get_mom();
  36 }
  37
  38 void
  39 Performer::play( Audio_item* p )
  40 {
  41     daddy_perf_l_->play( p );
  42 }
  43
  44 void
  45 Performer::play( Midi_item* l )
  46 {
  47     daddy_perf_l_->play( l );
  48 }
  49
  50 int
  51 Performer::get_tempo_i()const
  52 {
  53     return daddy_perf_l_->get_tempo_i();
  54 }
  55
  56 void
  57 Performer::print() const
  58 {
  59 #ifndef NPRINT
  60     mtor << "\n" << name() << " {";
  61     do_print();
  62     mtor << "}";
  63 #endif
  64 }
  65
  66 void
  67 Performer::process_requests()
  68 {
  69 }
  70
  71 void
  72 Performer::set( Moment )
  73 {
  74 }
  75
  76 //<ugh>
  77 int
  78 Performer::get_track_i() const
  79 {
  80     return daddy_perf_l_->get_track_i();
  81 }
  82
  83 void
  84 Performer::set_track( int& )
  85 {
  86 }
  87 //</ugh>
  88
  89 bool
  90 Performer::do_try_request( Request* req_l )
  91 {
  92     return false;
  93 }
  94
  95 bool
  96 Performer::try_request(Request*r)
  97 {
  98     if (!init_b_) {
  99         creation_processing();
 100     }
 101     return do_try_request(r);
 102 }
 103
 104 void
 105 Performer::creation_processing()
 106 {
 107     if (!init_b_) {
 108 /*      if ( daddy_perf_l_ ) {
 109             init_b_ = true;     // ugh. avoid recursion
 110             daddy_perf_l_->creation_processing();
 111             init_b_ = false;
 112         }
 113
 114         */
 115         do_creation_processing();
 116         init_b_ = true;
 117     }
 118 }
 119 void
 120 Performer::do_creation_processing()
 121 {
 122 }
 123
 124 void
 125 Performer::do_removal_processing()
 126 {
 127 }