hdr/midiitem.hh

   1 //
   2 //  midiitem.hh -- part of LilyPond
   3 //
   4 //  copyright 1997 Jan Nieuwenhuizen <jan@digicash.com>
   5
   6 #ifndef MIDI_ITEM_HH
   7 #define MIDI_ITEM_HH
   8 #include "string.hh"
   9 #include "proto.hh"
  10
  11 struct Midi_item {
  12     /* *************** */
  13     static String i2varint_str( int i );
  14     virtual void output_midi( Midi_stream& midi_stream_r );
  15     virtual String str() = 0;
  16 };
  17
  18 struct Midi_note : public Midi_item {
  19     /* *************** */
  20     int const c0_pitch_i_c_ = 60;
  21     Byte dynamic_byte_;
  22
  23     /**
  24       Generate a note-event on a channel pitch.
  25
  26       @param #melreq_l# is the pitch.
  27      */
  28     Midi_note( Melodic_req* melreq_l, int channel_i, bool on_b );
  29
  30     virtual String str();
  31
  32     int channel_i_;
  33     int on_b_;
  34     int pitch_i_;
  35 };
  36
  37 struct Midi_duration : public Midi_item {
  38     /* *************** */
  39     Midi_duration( Real seconds_f );
  40
  41     virtual String str();
  42
  43     Real seconds_f_;
  44 };
  45
  46 struct Midi_chunk : Midi_item {
  47     /* *************** */
  48     Midi_chunk();
  49
  50     void add( String str );
  51     void set( String header_str, String data_str, String footer_str );
  52     virtual String str();
  53
  54 private:
  55     String data_str_;
  56     String footer_str_;
  57     String header_str_;
  58 };
  59
  60 struct Midi_header : Midi_chunk {
  61     /* *************** */
  62     Midi_header( int format_i, int tracks_i, int clocks_per_4_i );
  63 };
  64
  65 struct Midi_tempo : Midi_item {
  66     /* *************** */
  67     Midi_tempo( int tempo_i );
  68
  69     virtual String str();
  70
  71     int tempo_i_;
  72 };
  73
  74 struct Midi_track : Midi_chunk {
  75     /* *************** */
  76     int number_i_;
  77     Midi_track( int number_i );
  78
  79     void add( int delta_time_i, String event );
  80 //      void add( Moment delta_time_moment, Midi_item& mitem_r );
  81     void add( Moment delta_time_moment, Midi_item* mitem_l );
  82 };
  83
  84 #endif // MIDI_ITEM_HH //
  85