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/audioengine.h"
26 #include "ardour/data_type.h"
27 #include "ardour/debug.h"
28 #include "ardour/midi_buffer.h"
29 #include "ardour/midi_port.h"
30 #include "ardour/session.h"
33 using namespace ARDOUR;
36 #define port_engine AudioEngine::instance()->port_engine()
38 MidiPort::MidiPort (const std::string& name, PortFlags flags)
39 : Port (name, DataType::MIDI, flags)
40 , _has_been_mixed_down (false)
41 , _resolve_required (false)
42 , _input_active (true)
43 , _always_parse (false)
46 _buffer = new MidiBuffer (AudioEngine::instance()->raw_buffer_size (DataType::MIDI));
55 MidiPort::cycle_start (pframes_t nframes)
57 framepos_t now = AudioEngine::instance()->sample_time_at_cycle_start();
59 Port::cycle_start (nframes);
63 if (sends_output ()) {
64 port_engine.midi_clear (port_engine.get_buffer (_port_handle, nframes));
67 if (_always_parse || (receives_input() && _trace_on)) {
68 MidiBuffer& mb (get_midi_buffer (nframes));
70 /* dump incoming MIDI to parser */
72 for (MidiBuffer::iterator b = mb.begin(); b != mb.end(); ++b) {
73 uint8_t* buf = (*b).buffer();
75 _self_parser.set_timestamp (now + (*b).time());
77 uint32_t limit = (*b).size();
79 for (size_t n = 0; n < limit; ++n) {
80 _self_parser.scanner (buf[n]);
87 MidiPort::get_buffer (pframes_t nframes)
89 return get_midi_buffer (nframes);
93 MidiPort::get_midi_buffer (pframes_t nframes)
95 if (_has_been_mixed_down) {
99 if (receives_input ()) {
103 void* buffer = port_engine.get_buffer (_port_handle, nframes);
104 const pframes_t event_count = port_engine.get_midi_event_count (buffer);
106 /* suck all relevant MIDI events from the MIDI port buffer
110 for (pframes_t i = 0; i < event_count; ++i) {
116 port_engine.midi_event_get (timestamp, size, &buf, buffer, i);
118 if (buf[0] == 0xfe) {
119 /* throw away active sensing */
121 } else if ((buf[0] & 0xF0) == 0x90 && buf[2] == 0) {
122 /* normalize note on with velocity 0 to proper note off */
123 buf[0] = 0x80 | (buf[0] & 0x0F); /* note off */
124 buf[2] = 0x40; /* default velocity */
127 /* check that the event is in the acceptable time range */
129 if ((timestamp >= (_global_port_buffer_offset + _port_buffer_offset)) &&
130 (timestamp < (_global_port_buffer_offset + _port_buffer_offset + nframes))) {
131 _buffer->push_back (timestamp, size, buf);
133 cerr << "Dropping incoming MIDI at time " << timestamp << "; offset="
134 << _global_port_buffer_offset << " limit="
135 << (_global_port_buffer_offset + _port_buffer_offset + nframes) << "\n";
140 _buffer->silence (nframes);
144 _buffer->silence (nframes);
148 _has_been_mixed_down = true;
155 MidiPort::cycle_end (pframes_t /*nframes*/)
157 _has_been_mixed_down = false;
161 MidiPort::cycle_split ()
163 _has_been_mixed_down = false;
167 MidiPort::resolve_notes (void* port_buffer, MidiBuffer::TimeType when)
169 for (uint8_t channel = 0; channel <= 0xF; channel++) {
171 uint8_t ev[3] = { ((uint8_t) (MIDI_CMD_CONTROL | channel)), MIDI_CTL_SUSTAIN, 0 };
173 /* we need to send all notes off AND turn the
174 * sustain/damper pedal off to handle synths
175 * that prioritize sustain over AllNotesOff
178 if (port_engine.midi_event_put (port_buffer, when, ev, 3) != 0) {
179 cerr << "failed to deliver sustain-zero on channel " << (int)channel << " on port " << name() << endl;
182 ev[1] = MIDI_CTL_ALL_NOTES_OFF;
184 if (port_engine.midi_event_put (port_buffer, when, ev, 3) != 0) {
185 cerr << "failed to deliver ALL NOTES OFF on channel " << (int)channel << " on port " << name() << endl;
191 MidiPort::flush_buffers (pframes_t nframes)
193 if (sends_output ()) {
195 void* port_buffer = 0;
197 if (_resolve_required) {
198 port_buffer = port_engine.get_buffer (_port_handle, nframes);
199 /* resolve all notes at the start of the buffer */
200 resolve_notes (port_buffer, _global_port_buffer_offset);
201 _resolve_required = false;
204 if (_buffer->empty()) {
209 port_buffer = port_engine.get_buffer (_port_handle, nframes);
213 for (MidiBuffer::iterator i = _buffer->begin(); i != _buffer->end(); ++i) {
215 const Evoral::MIDIEvent<MidiBuffer::TimeType> ev (*i, false);
218 if (sends_output() && _trace_on) {
219 uint8_t const * const buf = ev.buffer();
220 const framepos_t now = AudioEngine::instance()->sample_time_at_cycle_start();
222 _self_parser.set_timestamp (now + ev.time());
224 uint32_t limit = ev.size();
226 for (size_t n = 0; n < limit; ++n) {
227 _self_parser.scanner (buf[n]);
232 // event times are in frames, relative to cycle start
235 if (DEBUG_ENABLED (DEBUG::MidiIO)) {
236 const Session* s = AudioEngine::instance()->session();
237 const framepos_t now = (s ? s->transport_frame() : 0);
239 DEBUG_STR_APPEND(a, string_compose ("MidiPort %8 %1 pop event @ %2 (global %4, within %5 gpbo %6 pbo %7 sz %3 ", _buffer, ev.time(), ev.size(),
240 now + ev.time(), nframes, _global_port_buffer_offset, _port_buffer_offset, name()));
241 for (size_t i=0; i < ev.size(); ++i) {
242 DEBUG_STR_APPEND(a,hex);
243 DEBUG_STR_APPEND(a,"0x");
244 DEBUG_STR_APPEND(a,(int)(ev.buffer()[i]));
245 DEBUG_STR_APPEND(a,' ');
247 DEBUG_STR_APPEND(a,'\n');
248 DEBUG_TRACE (DEBUG::MidiIO, DEBUG_STR(a).str());
252 assert (ev.time() < (nframes + _global_port_buffer_offset + _port_buffer_offset));
254 if (ev.time() >= _global_port_buffer_offset + _port_buffer_offset) {
255 if (port_engine.midi_event_put (port_buffer, (pframes_t) ev.time(), ev.buffer(), ev.size()) != 0) {
256 cerr << "write failed, drop flushed note off on the floor, time "
257 << ev.time() << " > " << _global_port_buffer_offset + _port_buffer_offset << endl;
260 cerr << "drop flushed event on the floor, time " << ev.time()
261 << " too early for " << _global_port_buffer_offset
262 << " + " << _port_buffer_offset;
263 for (size_t xx = 0; xx < ev.size(); ++xx) {
264 cerr << ' ' << hex << (int) ev.buffer()[xx];
270 /* done.. the data has moved to the port buffer, mark it so
278 MidiPort::require_resolve ()
280 _resolve_required = true;
284 MidiPort::transport_stopped ()
286 _resolve_required = true;
290 MidiPort::realtime_locate ()
292 _resolve_required = true;
300 cerr << name() << " new MIDI buffer of size " << AudioEngine::instance()->raw_buffer_size (DataType::MIDI) << endl;
301 _buffer = new MidiBuffer (AudioEngine::instance()->raw_buffer_size (DataType::MIDI));
305 MidiPort::set_input_active (bool yn)
311 MidiPort::set_always_parse (bool yn)
317 MidiPort::set_trace_on (bool yn)