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)
24 : Port (DataType::MIDI, flgs)
25 , JackPort (name, DataType::MIDI, flgs)
26 , MidiPort (flgs, 4096) // FIXME FIXME FIXME Jack needs to tell us this
27 , _nframes_this_cycle(0)
32 JackMidiPort::cycle_start (nframes_t nframes)
35 assert(_buffer.size() == 0);
37 _nframes_this_cycle = nframes;
39 if (_flags & JackPortIsOutput) {
40 _buffer.silence(nframes);
41 assert(_buffer.size() == 0);
45 // We're an input - copy Jack events to internal buffer
47 void* jack_buffer = jack_port_get_buffer(_port, nframes);
48 const nframes_t event_count
49 = jack_midi_get_event_count(jack_buffer);
51 assert(event_count < _buffer.capacity());
55 for (nframes_t i=0; i < event_count; ++i) {
57 jack_midi_event_get(&ev, jack_buffer, i);
59 _buffer.push_back(ev);
62 assert(_buffer.size() == event_count);
64 //if (_buffer.size() > 0)
65 // cerr << "MIDIPort got " << event_count << " events." << endl;
69 JackMidiPort::cycle_end()
71 if (_flags & JackPortIsInput) {
72 _nframes_this_cycle = 0;
76 // We're an output - copy events from internal buffer to Jack buffer
78 void* jack_buffer = jack_port_get_buffer(_port, _nframes_this_cycle);
80 //const nframes_t event_count = _buffer.size();
81 //if (event_count > 0)
82 // cerr << "MIDIPort writing " << event_count << " events." << endl;
84 jack_midi_clear_buffer(jack_buffer);
86 for (MidiBuffer::iterator i = _buffer.begin(); i != _buffer.end(); ++i) {
87 const MidiEvent& ev = *i;
88 // event times should be frames, relative to cycle start
89 assert(ev.time() >= 0);
90 assert(ev.time() < _nframes_this_cycle);
91 jack_midi_event_write(jack_buffer, (jack_nframes_t)ev.time(), ev.buffer(), ev.size());
94 _nframes_this_cycle = 0;