Jack2 1.9.8

JackMidiAsyncQueue.h

00001 /*
00002 Copyright (C) 2010 Devin Anderson
00003 
00004 This program is free software; you can redistribute it and/or modify
00005 it under the terms of the GNU Lesser General Public License as published by
00006 the Free Software Foundation; either version 2.1 of the License, or
00007 (at your option) any later version.
00008 
00009 This program is distributed in the hope that it will be useful,
00010 but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 GNU Lesser General Public License for more details.
00013 
00014 You should have received a copy of the GNU Lesser General Public License
00015 along with this program; if not, write to the Free Software
00016 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00017 
00018 */
00019 
00020 #ifndef __JackMidiAsyncQueue__
00021 #define __JackMidiAsyncQueue__
00022 
00023 #include "JackMidiPort.h"
00024 #include "JackMidiReadQueue.h"
00025 #include "JackMidiWriteQueue.h"
00026 #include "ringbuffer.h"
00027 
00028 namespace Jack {
00029 
00040     class SERVER_EXPORT JackMidiAsyncQueue:
00041         public JackMidiReadQueue, public JackMidiWriteQueue {
00042 
00043     private:
00044 
00045         static const size_t INFO_SIZE =
00046             sizeof(jack_nframes_t) + sizeof(size_t);
00047 
00048         jack_ringbuffer_t *byte_ring;
00049         jack_midi_data_t *data_buffer;
00050         jack_midi_event_t dequeue_event;
00051         jack_ringbuffer_t *info_ring;
00052         size_t max_bytes;
00053 
00054     public:
00055 
00056         using JackMidiWriteQueue::EnqueueEvent;
00057 
00064         JackMidiAsyncQueue(size_t max_bytes=4096, size_t max_messages=1024);
00065 
00066         virtual
00067         ~JackMidiAsyncQueue();
00068 
00074         virtual jack_midi_event_t *
00075         DequeueEvent();
00076 
00083         virtual EnqueueResult
00084         EnqueueEvent(jack_nframes_t time, size_t size,
00085                      jack_midi_data_t *buffer);
00086 
00091         size_t
00092         GetAvailableSpace();
00093 
00094     };
00095 
00096 }
00097 
00098 #endif