Jack2  1.9.9
JackCoreMidiOutputPort.h
1 /*
2 Copyright (C) 2011 Devin Anderson
3 
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 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 General Public License for more details.
13 
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 
18 */
19 
20 #ifndef __JackCoreMidiOutputPort__
21 #define __JackCoreMidiOutputPort__
22 
23 #include <semaphore.h>
24 
25 #include "JackCoreMidiPort.h"
26 #include "JackMidiAsyncQueue.h"
27 #include "JackMidiBufferReadQueue.h"
28 #include "JackThread.h"
29 
30 namespace Jack {
31 
34 
35  private:
36 
38  GetCoreMidiEvent(bool block);
39 
40  MIDITimeStamp
41  GetTimeStampFromFrames(jack_nframes_t frames);
42 
43  static const size_t PACKET_BUFFER_SIZE = 65536;
44 
45  SInt32 advance_schedule_time;
46  char packet_buffer[PACKET_BUFFER_SIZE];
47  JackMidiBufferReadQueue *read_queue;
48  char semaphore_name[128];
49  JackThread *thread;
50  JackMidiAsyncQueue *thread_queue;
51  sem_t *thread_queue_semaphore;
52 
53  protected:
54 
55  virtual bool
56  SendPacketList(MIDIPacketList *packet_list) = 0;
57 
58  void
59  Initialize(const char *alias_name, const char *client_name,
60  const char *driver_name, int index,
61  MIDIEndpointRef endpoint, SInt32 advance_schedule_time);
62 
63  public:
64 
65  JackCoreMidiOutputPort(double time_ratio, size_t max_bytes=4096,
66  size_t max_messages=1024);
67 
68  virtual
70 
71  bool
72  Execute();
73 
74  bool
75  Init();
76 
77  void
78  ProcessJack(JackMidiBuffer *port_buffer, jack_nframes_t frames);
79 
80  bool
81  Start();
82 
83  bool
84  Stop();
85 
86  };
87 
88 }
89 
90 #endif
The base class for runnable objects, that have an Init and Execute method to be called in a threa...
Definition: JackThread.h:34
Darwin threads. Real-time threads are actually &quot;time constraint&quot; threads.