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.
22 #include "pbd/compose.h"
23 #include "pbd/debug.h"
25 #include "ardour/midi_port.h"
26 #include "ardour/data_type.h"
27 #include "ardour/audioengine.h"
28 #include "ardour/debug.h"
31 using namespace ARDOUR;
34 #define port_engine AudioEngine::instance()->port_engine()
36 MidiPort::MidiPort (const std::string& name, PortFlags flags)
37 : Port (name, DataType::MIDI, flags)
38 , _has_been_mixed_down (false)
39 , _resolve_required (false)
40 , _input_active (true)
41 , _always_parse (false)
43 _buffer = new MidiBuffer (AudioEngine::instance()->raw_buffer_size (DataType::MIDI));
52 MidiPort::cycle_start (pframes_t nframes)
54 framepos_t now = AudioEngine::instance()->sample_time_at_cycle_start();
56 Port::cycle_start (nframes);
60 if (sends_output ()) {
61 port_engine.midi_clear (port_engine.get_buffer (_port_handle, nframes));
65 MidiBuffer& mb (get_midi_buffer (nframes));
67 /* dump incoming MIDI to parser */
69 for (MidiBuffer::iterator b = mb.begin(); b != mb.end(); ++b) {
70 uint8_t* buf = (*b).buffer();
72 _self_parser.set_timestamp (now + (*b).time());
74 uint32_t limit = (*b).size();
76 for (size_t n = 0; n < limit; ++n) {
77 _self_parser.scanner (buf[n]);
84 MidiPort::get_midi_buffer (pframes_t nframes)
86 if (_has_been_mixed_down) {
90 if (receives_input ()) {
94 void* buffer = port_engine.get_buffer (_port_handle, nframes);
95 const pframes_t event_count = port_engine.get_midi_event_count (buffer);
97 /* suck all relevant MIDI events from the MIDI port buffer
101 for (pframes_t i = 0; i < event_count; ++i) {
107 port_engine.midi_event_get (timestamp, size, &buf, buffer, i);
109 if (buf[0] == 0xfe) {
110 /* throw away active sensing */
114 /* check that the event is in the acceptable time range */
116 if ((timestamp >= (_global_port_buffer_offset + _port_buffer_offset)) &&
117 (timestamp < (_global_port_buffer_offset + _port_buffer_offset + nframes))) {
118 _buffer->push_back (timestamp, size, buf);
120 cerr << "Dropping incoming MIDI at time " << timestamp << "; offset="
121 << _global_port_buffer_offset << " limit="
122 << (_global_port_buffer_offset + _port_buffer_offset + nframes) << "\n";
127 _buffer->silence (nframes);
131 _buffer->silence (nframes);
135 _has_been_mixed_down = true;
142 MidiPort::cycle_end (pframes_t /*nframes*/)
144 _has_been_mixed_down = false;
148 MidiPort::cycle_split ()
150 _has_been_mixed_down = false;
154 MidiPort::resolve_notes (void* port_buffer, MidiBuffer::TimeType when)
156 for (uint8_t channel = 0; channel <= 0xF; channel++) {
158 uint8_t ev[3] = { ((uint8_t) (MIDI_CMD_CONTROL | channel)), MIDI_CTL_SUSTAIN, 0 };
160 /* we need to send all notes off AND turn the
161 * sustain/damper pedal off to handle synths
162 * that prioritize sustain over AllNotesOff
165 if (port_engine.midi_event_put (port_buffer, when, ev, 3) != 0) {
166 cerr << "failed to deliver sustain-zero on channel " << (int)channel << " on port " << name() << endl;
169 ev[1] = MIDI_CTL_ALL_NOTES_OFF;
171 if (port_engine.midi_event_put (port_buffer, 0, ev, 3) != 0) {
172 cerr << "failed to deliver ALL NOTES OFF on channel " << (int)channel << " on port " << name() << endl;
178 MidiPort::flush_buffers (pframes_t nframes)
180 if (sends_output ()) {
182 void* port_buffer = 0;
184 if (_resolve_required) {
185 port_buffer = port_engine.get_buffer (_port_handle, nframes);
186 /* resolve all notes at the start of the buffer */
187 resolve_notes (port_buffer, 0);
188 _resolve_required = false;
191 if (_buffer->empty()) {
196 port_buffer = port_engine.get_buffer (_port_handle, nframes);
199 for (MidiBuffer::iterator i = _buffer->begin(); i != _buffer->end(); ++i) {
201 const Evoral::MIDIEvent<MidiBuffer::TimeType> ev (*i, false);
203 // event times are in frames, relative to cycle start
206 if (DEBUG::MidiIO & PBD::debug_bits) {
208 DEBUG_STR_APPEND(a, string_compose ("MidiPort %1 pop event @ %2 sz %3 ", this, ev.time(), ev.size()));
209 for (size_t i=0; i < ev.size(); ++i) {
210 DEBUG_STR_APPEND(a,hex);
211 DEBUG_STR_APPEND(a,"0x");
212 DEBUG_STR_APPEND(a,(int)(ev.buffer()[i]));
213 DEBUG_STR_APPEND(a,' ');
215 DEBUG_STR_APPEND(a,'\n');
216 DEBUG_TRACE (DEBUG::MidiIO, DEBUG_STR(a).str());
220 assert (ev.time() < (nframes + _global_port_buffer_offset + _port_buffer_offset));
222 if (ev.time() >= _global_port_buffer_offset + _port_buffer_offset) {
223 if (port_engine.midi_event_put (port_buffer, (pframes_t) ev.time(), ev.buffer(), ev.size()) != 0) {
224 cerr << "write failed, drop flushed note off on the floor, time "
225 << ev.time() << " > " << _global_port_buffer_offset + _port_buffer_offset << endl;
228 cerr << "drop flushed event on the floor, time " << ev.time()
229 << " too early for " << _global_port_buffer_offset
230 << " + " << _port_buffer_offset;
231 for (size_t xx = 0; xx < ev.size(); ++xx) {
232 cerr << ' ' << hex << (int) ev.buffer()[xx];
238 /* done.. the data has moved to the port buffer, mark it so
246 MidiPort::require_resolve ()
248 _resolve_required = true;
252 MidiPort::transport_stopped ()
254 _resolve_required = true;
258 MidiPort::realtime_locate ()
260 _resolve_required = true;
268 cerr << name() << " new MIDI buffer of size " << AudioEngine::instance()->raw_buffer_size (DataType::MIDI) << endl;
269 _buffer = new MidiBuffer (AudioEngine::instance()->raw_buffer_size (DataType::MIDI));
273 MidiPort::set_input_active (bool yn)
279 MidiPort::set_always_parse (bool yn)