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)
28 // MIDI ports always need a buffer since jack buffer format is different
36 JackMidiPort::cycle_start (nframes_t nframes, nframes_t offset)
41 assert(_buffer->size() == 0);
43 if (_flags & IsOutput) {
47 // We're an input - copy Jack events to internal buffer
49 void* jack_buffer = jack_port_get_buffer(_port, nframes);
50 const nframes_t event_count = jack_midi_get_event_count(jack_buffer);
52 assert(event_count < _buffer->capacity());
56 for (nframes_t i=0; i < event_count; ++i) {
58 jack_midi_event_get (&ev, jack_buffer, i);
60 _buffer->push_back (ev);
63 assert(_buffer->size() == event_count);
65 /*if (_buffer->size() > 0)
66 cerr << "JackMIDIPort got " << event_count << " events (buf " << _buffer << ")" << endl;*/
70 JackMidiPort::cycle_end (nframes_t nframes, nframes_t offset)
74 if (_flags & IsInput) {
78 // We're an output - copy events from source buffer to Jack buffer
80 void* jack_buffer = jack_port_get_buffer (_port, nframes);
82 jack_midi_clear_buffer (jack_buffer);
84 for (MidiBuffer::iterator i = _buffer->begin(); i != _buffer->end(); ++i) {
85 const MIDI::Event& ev = *i;
86 // event times should be frames, relative to cycle start
87 assert(ev.time() >= 0);
88 assert(ev.time() < nframes);
89 jack_midi_event_write (jack_buffer, (jack_nframes_t) ev.time(), ev.buffer(), ev.size());