Jack2: JackMidiBufferReadQueue.cpp Source File

Jack2 1.9.12

JackMidiBufferReadQueue.cpp
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 #include "JackMidiBufferReadQueue.h"
21 #include "JackMidiUtil.h"
22 #include "JackError.h"
23
24 using Jack::JackMidiBufferReadQueue;
25
26 JackMidiBufferReadQueue::JackMidiBufferReadQueue()
27 {
28 event_count = 0;
29 index = 0;
30 }
31
32 jack_midi_event_t *
33 JackMidiBufferReadQueue::DequeueEvent()
34 {
35 jack_midi_event_t *e = 0;
36 if (index < event_count) {
37 JackMidiEvent *event = &(buffer->events[index]);
38 midi_event.buffer = event->GetData(buffer);
39 midi_event.size = event->size;
40 midi_event.time = last_frame_time + event->time;
41 e = &midi_event;
42 index++;
43 }
44 return e;
45 }
46
47 void
48 JackMidiBufferReadQueue::ResetMidiBuffer(JackMidiBuffer *buffer)
49 {
50 event_count = 0;
51 index = 0;
52 if (! buffer) {
53 jack_error("JackMidiBufferReadQueue::ResetMidiBuffer - buffer reset "
54 "to NULL");
55 } else if (! buffer->IsValid()) {
56 jack_error("JackMidiBufferReadQueue::ResetMidiBuffer - buffer reset "
57 "to invalid buffer");
58 } else {
59 uint32_t lost_events = buffer->lost_events;
60 if (lost_events) {
61 jack_error("JackMidiBufferReadQueue::ResetMidiBuffer - %d events "
62 "lost during mixdown", lost_events);
63 }
64 this->buffer = buffer;
65 event_count = buffer->event_count;
66 last_frame_time = GetLastFrame();
67 }
68 }
Jack::JackMidiEvent
Definition: JackMidiPort.h:46
Jack::JackMidiBufferReadQueue
Definition: JackMidiBufferReadQueue.h:31
jack_midi_event_t
Definition: JackMidiPort.h:33
Jack::JackMidiBufferReadQueue::DequeueEvent
jack_midi_event_t * DequeueEvent()
Definition: JackMidiBufferReadQueue.cpp:33
jack_error
SERVER_EXPORT void jack_error(const char *fmt,...)
Definition: JackError.cpp:92
jack_midi_event_t::size
size_t size
Definition: JackMidiPort.h:36
jack_midi_event_t::buffer
jack_midi_data_t * buffer
Definition: JackMidiPort.h:37
jack_midi_event_t::time
jack_nframes_t time
Definition: JackMidiPort.h:35
Jack::JackMidiBuffer
Definition: JackMidiPort.h:75
Jack::JackMidiBufferReadQueue::ResetMidiBuffer
void ResetMidiBuffer(JackMidiBuffer *buffer)
Definition: JackMidiBufferReadQueue.cpp:48