Jack2: JackALSARawMidiReceiveQueue.cpp Source File

Jack2 1.9.12

JackALSARawMidiReceiveQueue.cpp
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 #include "JackALSARawMidiReceiveQueue.h"
21 #include "JackError.h"
22 #include "JackMidiUtil.h"
23
24 using Jack::JackALSARawMidiReceiveQueue;
25
26 JackALSARawMidiReceiveQueue::
27 JackALSARawMidiReceiveQueue(snd_rawmidi_t *rawmidi, size_t buffer_size)
28 {
29 buffer = new jack_midi_data_t[buffer_size];
30 this->buffer_size = buffer_size;
31 this->rawmidi = rawmidi;
32 }
33
34 JackALSARawMidiReceiveQueue::~JackALSARawMidiReceiveQueue()
35 {
36 delete[] buffer;
37 }
38
39 jack_midi_event_t *
40 JackALSARawMidiReceiveQueue::DequeueEvent()
41 {
42 ssize_t result = snd_rawmidi_read(rawmidi, buffer, buffer_size);
43 if (result > 0) {
44 event.buffer = buffer;
45 event.size = (size_t) result;
46 event.time = GetCurrentFrame();
47 return &event;
48 }
49 if (result && (result != -EWOULDBLOCK)) {
50 jack_error("JackALSARawMidiReceiveQueue::DequeueEvent - "
51 "snd_rawmidi_read: %s", snd_strerror(result));
52 }
53 return 0;
54 }
jack_midi_event_t
Definition: JackMidiPort.h:33
Jack::JackALSARawMidiReceiveQueue
Definition: JackALSARawMidiReceiveQueue.h:29
jack_error
SERVER_EXPORT void jack_error(const char *fmt,...)
Definition: JackError.cpp:92
Jack::JackALSARawMidiReceiveQueue::DequeueEvent
jack_midi_event_t * DequeueEvent()
Definition: JackALSARawMidiReceiveQueue.cpp:40