2 Copyright (C) 2006 Paul Davis
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.
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.
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.
20 #include <ardour/jack_midi_port.h>
22 using namespace ARDOUR;
23 JackMidiPort::JackMidiPort (const std::string& name, Flags flgs, MidiBuffer* buf)
25 , JackPort (name, DataType::MIDI, flgs)
26 , BaseMidiPort (name, flgs)
30 cout << name << " BUFFER" << endl;
37 cout << name << " NO BUFFER" << endl;
39 /* data space will be provided by JACK */
40 _buffer = new MidiBuffer (0);
46 JackMidiPort::cycle_start (nframes_t nframes, nframes_t offset_ignored_but_probably_should_not_be)
49 assert(_buffer->size() == 0);
51 if (_flags & IsOutput) {
52 // no buffer, nothing to do
56 // We're an input - copy Jack events to internal buffer
58 void* jack_buffer = jack_port_get_buffer(_port, nframes);
59 const nframes_t event_count = jack_midi_get_event_count(jack_buffer);
61 assert(event_count < _buffer->capacity());
65 for (nframes_t i=0; i < event_count; ++i) {
67 jack_midi_event_get (&ev, jack_buffer, i);
69 _buffer->push_back (ev);
72 assert(_buffer->size() == event_count);
74 if (_buffer->size() > 0)
75 cerr << "MIDIPort got " << event_count << " events." << endl;
79 JackMidiPort::cycle_end (nframes_t nframes, nframes_t offset_ignored_but_probably_should_not_be)
81 if (_flags & IsInput) {
85 // We're an output - copy events from source buffer to Jack buffer
87 void* jack_buffer = jack_port_get_buffer (_port, nframes);
89 jack_midi_clear_buffer (jack_buffer);
91 for (MidiBuffer::iterator i = _buffer->begin(); i != _buffer->end(); ++i) {
92 const MidiEvent& ev = *i;
93 // event times should be frames, relative to cycle start
94 assert(ev.time() >= 0);
95 assert(ev.time() < nframes);
96 jack_midi_event_write (jack_buffer, (jack_nframes_t) ev.time(), ev.buffer(), ev.size());