2 Copyright (C) 2014 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 "evoral/MIDIEvent.hpp"
21 #include "midi++/channel.h"
22 #include "midi++/parser.h"
23 #include "midi++/port.h"
25 #include "ardour/async_midi_port.h"
26 #include "ardour/event_type_map.h"
27 #include "ardour/midi_port.h"
28 #include "ardour/midi_scene_change.h"
29 #include "ardour/midi_scene_changer.h"
30 #include "ardour/session.h"
34 using namespace ARDOUR;
36 MIDISceneChanger::MIDISceneChanger (Session& s)
39 , last_bank_message_time (-1)
40 , last_program_message_time (-1)
41 , last_delivered_program (-1)
42 , last_delivered_bank (-1)
45 _session.locations()->changed.connect_same_thread (*this, boost::bind (&MIDISceneChanger::locations_changed, this, _1));
46 Location::scene_changed.connect_same_thread (*this, boost::bind (&MIDISceneChanger::gather, this));
49 MIDISceneChanger::~MIDISceneChanger ()
54 MIDISceneChanger::locations_changed (Locations::Change)
59 /** Use the session's list of locations to collect all patch changes.
61 * This is called whenever the locations change in anyway.
64 MIDISceneChanger::gather ()
66 const Locations::LocationList& locations (_session.locations()->list());
67 boost::shared_ptr<SceneChange> sc;
69 Glib::Threads::RWLock::WriterLock lm (scene_lock);
73 for (Locations::LocationList::const_iterator l = locations.begin(); l != locations.end(); ++l) {
75 if ((sc = (*l)->scene_change()) != 0) {
77 boost::shared_ptr<MIDISceneChange> msc = boost::dynamic_pointer_cast<MIDISceneChange> (sc);
80 scenes.insert (std::make_pair ((*l)->start(), msc));
87 MIDISceneChanger::rt_deliver (MidiBuffer& mbuf, framepos_t when, boost::shared_ptr<MIDISceneChange> msc)
92 if ((cnt = msc->get_bank_msb_message (buf, sizeof (buf))) > 0) {
93 mbuf.push_back (when, cnt, buf);
95 if ((cnt = msc->get_bank_lsb_message (buf, sizeof (buf))) > 0) {
96 mbuf.push_back (when, cnt, buf);
99 last_delivered_bank = msc->bank();
102 if ((cnt = msc->get_program_message (buf, sizeof (buf))) > 0) {
103 mbuf.push_back (when, cnt, buf);
105 last_delivered_program = msc->program();
110 MIDISceneChanger::non_rt_deliver (boost::shared_ptr<MIDISceneChange> msc)
114 boost::shared_ptr<AsyncMIDIPort> aport = boost::dynamic_pointer_cast<AsyncMIDIPort>(output_port);
116 /* We use zero as the timestamp for these messages because we are in a
117 non-RT/process context. Using zero means "deliver them as early as
118 possible" (practically speaking, in the next process callback).
121 if ((cnt = msc->get_bank_msb_message (buf, sizeof (buf))) > 0) {
122 aport->write (buf, cnt, 0);
124 if ((cnt = msc->get_bank_lsb_message (buf, sizeof (buf))) > 0) {
125 aport->write (buf, cnt, 0);
128 last_delivered_bank = msc->bank();
131 if ((cnt = msc->get_program_message (buf, sizeof (buf))) > 0) {
132 aport->write (buf, cnt, 0);
133 last_delivered_program = msc->program();
138 MIDISceneChanger::run (framepos_t start, framepos_t end)
140 if (!output_port || recording() || !_session.transport_rolling()) {
144 Glib::Threads::RWLock::ReaderLock lm (scene_lock, Glib::Threads::TRY_LOCK);
150 /* get lower bound of events to consider */
152 Scenes::const_iterator i = scenes.lower_bound (start);
153 MidiBuffer& mbuf (output_port->get_midi_buffer (end-start));
155 while (i != scenes.end()) {
157 if (i->first >= end) {
161 rt_deliver (mbuf, i->first - start, i->second);
168 MIDISceneChanger::locate (framepos_t pos)
170 boost::shared_ptr<MIDISceneChange> msc;
173 Glib::Threads::RWLock::ReaderLock lm (scene_lock);
175 if (scenes.empty()) {
179 Scenes::const_iterator i = scenes.lower_bound (pos);
181 if (i != scenes.end()) {
183 if (i->first != pos) {
184 /* i points to first scene with position > pos, so back
187 if (i != scenes.begin()) {
194 /* go back to the final scene and use it */
201 if (msc->program() != last_delivered_program || msc->bank() != last_delivered_bank) {
202 non_rt_deliver (msc);
207 MIDISceneChanger::set_input_port (MIDI::Port* mp)
211 incoming_connections.drop_connections();
215 /* midi port is asynchronous. MIDI parsing will be carried out
216 * by the MIDI UI thread which will emit the relevant signals
217 * and thus invoke our callbacks as necessary.
220 for (int channel = 0; channel < 16; ++channel) {
221 input_port->parser()->channel_bank_change[channel].connect_same_thread (incoming_connections, boost::bind (&MIDISceneChanger::bank_change_input, this, _1, _2, channel));
222 input_port->parser()->channel_program_change[channel].connect_same_thread (incoming_connections, boost::bind (&MIDISceneChanger::program_change_input, this, _1, _2, channel));
228 MIDISceneChanger::set_output_port (boost::shared_ptr<MidiPort> mp)
234 MIDISceneChanger::set_recording (bool yn)
240 MIDISceneChanger::recording() const
242 return _session.transport_rolling() && _session.get_record_enabled();
246 MIDISceneChanger::bank_change_input (MIDI::Parser& parser, unsigned short, int)
252 last_bank_message_time = parser.get_timestamp ();
256 MIDISceneChanger::program_change_input (MIDI::Parser& parser, MIDI::byte program, int channel)
258 framecnt_t time = parser.get_timestamp ();
260 last_program_message_time = time;
263 jump_to (input_port->channel (channel)->bank(), program);
267 Locations* locations (_session.locations ());
269 bool new_mark = false;
270 framecnt_t slop = (framecnt_t) floor ((Config->get_inter_scene_gap_msecs() / 1000.0) * _session.frame_rate());
272 /* check for marker at current location */
274 loc = locations->mark_at (time, slop);
277 /* create a new marker at the desired position */
279 std::string new_name;
281 if (!locations->next_available_name (new_name, _("Scene "))) {
282 std::cerr << "No new marker name available\n";
286 loc = new Location (_session, time, time, new_name, Location::IsMark);
290 unsigned short bank = input_port->channel (channel)->bank();
292 MIDISceneChange* msc =new MIDISceneChange (channel, bank, program & 0x7f);
294 loc->set_scene_change (boost::shared_ptr<MIDISceneChange> (msc));
296 /* this will generate a "changed" signal to be emitted by locations,
297 and we will call ::gather() to update our list of MIDI events.
301 locations->add (loc);
306 MIDISceneChanger::jump_to (int bank, int program)
308 const Locations::LocationList& locations (_session.locations()->list());
309 boost::shared_ptr<SceneChange> sc;
310 framepos_t where = max_framepos;
312 for (Locations::LocationList::const_iterator l = locations.begin(); l != locations.end(); ++l) {
314 if ((sc = (*l)->scene_change()) != 0) {
316 boost::shared_ptr<MIDISceneChange> msc = boost::dynamic_pointer_cast<MIDISceneChange> (sc);
318 if (msc->bank() == bank && msc->program() == program && (*l)->start() < where) {
319 where = (*l)->start();
324 if (where != max_framepos) {
325 _session.request_locate (where);