Jack2  1.9.9
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 
25 
26 JackMidiBufferReadQueue::JackMidiBufferReadQueue()
27 {
28  event_count = 0;
29  index = 0;
30 }
31 
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
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_midi_data_t * buffer
Definition: JackMidiPort.h:37
void ResetMidiBuffer(JackMidiBuffer *buffer)
SERVER_EXPORT void jack_error(const char *fmt,...)
Definition: JackError.cpp:91
jack_nframes_t time
Definition: JackMidiPort.h:35