gtk2_ardour/note_player.cc

   1 #include <sigc++/bind.h>
   2 #include <glibmm/main.h>
   3
   4 #include "ardour/midi_track.h"
   5 #include "ardour/session.h"
   6
   7 #include "note_player.h"
   8
   9 using namespace ARDOUR;
  10 using namespace std;
  11
  12 NotePlayer::NotePlayer (boost::shared_ptr<MidiTrack> mt)
  13         : track (mt)
  14 {
  15 }
  16
  17 void
  18 NotePlayer::add (boost::shared_ptr<NoteType> note)
  19 {
  20         notes.push_back (note);
  21 }
  22
  23 void
  24 NotePlayer::play ()
  25 {
  26         Evoral::MusicalTime longest_duration_beats = 0;
  27
  28         /* note: if there is more than 1 note, we will silence them all at the same time
  29          */
  30
  31         for (NoteList::iterator n = notes.begin(); n != notes.end(); ++n) {
  32                 track->write_immediate_event ((*n)->on_event().size(), (*n)->on_event().buffer());
  33                 if ((*n)->length() > longest_duration_beats) {
  34                         longest_duration_beats = (*n)->length();
  35                 }
  36         }
  37
  38         uint32_t note_length_ms = 350;
  39         /* beats_to_frames (longest_duration_beats)
  40          * (1000 / (double)track->session().nominal_frame_rate()); */
  41
  42         Glib::signal_timeout().connect(sigc::bind (sigc::ptr_fun (&NotePlayer::_off), this),
  43                                        note_length_ms, G_PRIORITY_DEFAULT);
  44 }
  45
  46 bool
  47 NotePlayer::_off (NotePlayer* np)
  48 {
  49         np->off ();
  50         delete np;
  51         return false;
  52 }
  53
  54 void
  55 NotePlayer::off ()
  56 {
  57         for (NoteList::iterator n = notes.begin(); n != notes.end(); ++n) {
  58                 track->write_immediate_event((*n)->off_event().size(), (*n)->off_event().buffer());
  59         }
  60 }