Jack2: JackFFADOMidiInputPort.cpp Source File

Jack2 1.9.12

JackFFADOMidiInputPort.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 <memory>
21
22 #include "JackFFADOMidiInputPort.h"
23 #include "JackMidiUtil.h"
24 #include "JackError.h"
25
26 using Jack::JackFFADOMidiInputPort;
27
28 JackFFADOMidiInputPort::JackFFADOMidiInputPort(size_t max_bytes)
29 {
30 event = 0;
31 receive_queue = new JackFFADOMidiReceiveQueue();
32 std::auto_ptr<JackFFADOMidiReceiveQueue> receive_queue_ptr(receive_queue);
33 write_queue = new JackMidiBufferWriteQueue();
34 std::auto_ptr<JackMidiBufferWriteQueue> write_queue_ptr(write_queue);
35 raw_queue = new JackMidiRawInputWriteQueue(write_queue, max_bytes,
36 max_bytes);
37 write_queue_ptr.release();
38 receive_queue_ptr.release();
39 }
40
41 JackFFADOMidiInputPort::~JackFFADOMidiInputPort()
42 {
43 delete raw_queue;
44 delete receive_queue;
45 delete write_queue;
46 }
47
48 void
49 JackFFADOMidiInputPort::Process(JackMidiBuffer *port_buffer,
50 uint32_t *input_buffer, jack_nframes_t frames)
51 {
52 receive_queue->ResetInputBuffer(input_buffer, frames);
53 write_queue->ResetMidiBuffer(port_buffer, frames);
54 jack_nframes_t boundary_frame = GetLastFrame() + frames;
55 if (! event) {
56 event = receive_queue->DequeueEvent();
57 }
58 for (; event; event = receive_queue->DequeueEvent()) {
59 switch (raw_queue->EnqueueEvent(event)) {
60 case JackMidiWriteQueue::BUFFER_FULL:
61
62 // Processing events early might free up some space in the raw
63 // input queue.
64
65 raw_queue->Process(boundary_frame);
66 switch (raw_queue->EnqueueEvent(event)) {
67 case JackMidiWriteQueue::BUFFER_TOO_SMALL:
68 // This shouldn't really happen. It indicates a bug if it
69 // does.
70 jack_error("JackFFADOMidiInputPort::Process - **BUG** "
71 "JackMidiRawInputWriteQueue::EnqueueEvent returned "
72 "`BUFFER_FULL`, and then returned "
73 "`BUFFER_TOO_SMALL` after a `Process()` call.");
74 // Fallthrough on purpose
75 case JackMidiWriteQueue::OK:
76 continue;
77 default:
78 return;
79 }
80 case JackMidiWriteQueue::BUFFER_TOO_SMALL:
81 jack_error("JackFFADOMidiInputPort::Process - The write queue "
82 "couldn't enqueue a %d-byte event. Dropping event.",
83 event->size);
84 // Fallthrough on purpose
85 case JackMidiWriteQueue::OK:
86 continue;
87 default:
88 // This is here to stop compliers from warning us about not
89 // handling enumeration values.
90 ;
91 }
92 break;
93 }
94 raw_queue->Process(boundary_frame);
95 }
Jack::JackFFADOMidiReceiveQueue::DequeueEvent
jack_midi_event_t * DequeueEvent()
Definition: JackFFADOMidiReceiveQueue.cpp:31
Jack::JackMidiBufferWriteQueue::ResetMidiBuffer
void ResetMidiBuffer(JackMidiBuffer *buffer, jack_nframes_t frames)
Definition: JackMidiBufferWriteQueue.cpp:50
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::JackMidiRawInputWriteQueue::Process
jack_nframes_t Process(jack_nframes_t boundary_frame=0)
Definition: JackMidiRawInputWriteQueue.cpp:151
Jack::JackMidiRawInputWriteQueue::EnqueueEvent
EnqueueResult EnqueueEvent(jack_nframes_t time, size_t size, jack_midi_data_t *buffer)
Definition: JackMidiRawInputWriteQueue.cpp:60
Jack::JackFFADOMidiInputPort
Definition: JackFFADOMidiInputPort.h:29