common/JackMidiBufferReadQueue.h

   1 /*
   2 Copyright (C) 2010 Devin Anderson
   3
   4 This program is free software; you can redistribute it and/or modify
   5 it under the terms of the GNU Lesser General Public License as published by
   6 the Free Software Foundation; either version 2.1 of the License, or
   7 (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU Lesser General Public License for more details.
  13
  14 You should have received a copy of the GNU Lesser General Public License
  15 along with this program; if not, write to the Free Software
  16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18 */
  19
  20 #ifndef __JackMidiBufferReadQueue__
  21 #define __JackMidiBufferReadQueue__
  22
  23 #include "JackMidiReadQueue.h"
  24
  25 namespace Jack {
  26
  27     /**
  28      * Wrapper class to present a JackMidiBuffer in a read queue interface.
  29      */
  30
  31     class SERVER_EXPORT JackMidiBufferReadQueue: public JackMidiReadQueue {
  32
  33     private:
  34
  35         JackMidiBuffer *buffer;
  36         jack_nframes_t event_count;
  37         jack_nframes_t index;
  38         jack_nframes_t last_frame_time;
  39         jack_midi_event_t midi_event;
  40
  41     public:
  42
  43         JackMidiBufferReadQueue();
  44
  45         jack_midi_event_t *
  46         DequeueEvent();
  47
  48         /**
  49          * This method must be called each period to reset the MIDI buffer for
  50          * processing.
  51          */
  52
  53         void
  54         ResetMidiBuffer(JackMidiBuffer *buffer);
  55
  56     };
  57
  58 }
  59
  60 #endif