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 , have_seen_bank_changes (false)
40 , last_program_message_time (-1)
41 , last_delivered_program (-1)
42 , last_delivered_bank (-1)
45 /* catch any add/remove/clear etc. for all Locations */
46 _session.locations()->changed.connect_same_thread (*this, boost::bind (&MIDISceneChanger::locations_changed, this));
47 _session.locations()->added.connect_same_thread (*this, boost::bind (&MIDISceneChanger::locations_changed, this));
48 _session.locations()->removed.connect_same_thread (*this, boost::bind (&MIDISceneChanger::locations_changed, this));
50 /* catch class-based signal that notifies of us changes in the scene change state of any Location */
51 Location::scene_changed.connect_same_thread (*this, boost::bind (&MIDISceneChanger::locations_changed, this));
54 MIDISceneChanger::~MIDISceneChanger ()
59 MIDISceneChanger::locations_changed ()
61 _session.locations()->apply (*this, &MIDISceneChanger::gather);
64 /** Use the session's list of locations to collect all patch changes.
66 * This is called whenever the locations change in anyway.
69 MIDISceneChanger::gather (const Locations::LocationList& locations)
71 boost::shared_ptr<SceneChange> sc;
73 Glib::Threads::RWLock::WriterLock lm (scene_lock);
77 for (Locations::LocationList::const_iterator l = locations.begin(); l != locations.end(); ++l) {
79 if ((sc = (*l)->scene_change()) != 0) {
81 boost::shared_ptr<MIDISceneChange> msc = boost::dynamic_pointer_cast<MIDISceneChange> (sc);
85 if (msc->bank() >= 0) {
86 have_seen_bank_changes = true;
89 scenes.insert (std::make_pair ((*l)->start(), msc));
96 MIDISceneChanger::rt_deliver (MidiBuffer& mbuf, framepos_t when, boost::shared_ptr<MIDISceneChange> msc)
101 MIDIOutputActivity (); /* EMIT SIGNAL */
103 if ((cnt = msc->get_bank_msb_message (buf, sizeof (buf))) > 0) {
104 mbuf.push_back (when, cnt, buf);
106 if ((cnt = msc->get_bank_lsb_message (buf, sizeof (buf))) > 0) {
107 mbuf.push_back (when, cnt, buf);
110 last_delivered_bank = msc->bank();
113 if ((cnt = msc->get_program_message (buf, sizeof (buf))) > 0) {
114 mbuf.push_back (when, cnt, buf);
116 last_delivered_program = msc->program();
121 MIDISceneChanger::non_rt_deliver (boost::shared_ptr<MIDISceneChange> msc)
125 boost::shared_ptr<AsyncMIDIPort> aport = boost::dynamic_pointer_cast<AsyncMIDIPort>(output_port);
127 /* We use zero as the timestamp for these messages because we are in a
128 non-RT/process context. Using zero means "deliver them as early as
129 possible" (practically speaking, in the next process callback).
132 MIDIOutputActivity (); /* EMIT SIGNAL */
134 if ((cnt = msc->get_bank_msb_message (buf, sizeof (buf))) > 0) {
135 aport->write (buf, cnt, 0);
137 if ((cnt = msc->get_bank_lsb_message (buf, sizeof (buf))) > 0) {
138 aport->write (buf, cnt, 0);
141 last_delivered_bank = msc->bank();
144 if ((cnt = msc->get_program_message (buf, sizeof (buf))) > 0) {
145 aport->write (buf, cnt, 0);
146 last_delivered_program = msc->program();
151 MIDISceneChanger::run (framepos_t start, framepos_t end)
153 if (!output_port || recording() || !_session.transport_rolling()) {
157 Glib::Threads::RWLock::ReaderLock lm (scene_lock, Glib::Threads::TRY_LOCK);
163 /* get lower bound of events to consider */
165 Scenes::const_iterator i = scenes.lower_bound (start);
166 MidiBuffer& mbuf (output_port->get_midi_buffer (end-start));
168 while (i != scenes.end()) {
170 if (i->first >= end) {
174 rt_deliver (mbuf, i->first - start, i->second);
181 MIDISceneChanger::locate (framepos_t pos)
183 boost::shared_ptr<MIDISceneChange> msc;
186 Glib::Threads::RWLock::ReaderLock lm (scene_lock);
188 if (scenes.empty()) {
192 Scenes::const_iterator i = scenes.lower_bound (pos);
194 if (i != scenes.end()) {
196 if (i->first != pos) {
197 /* i points to first scene with position > pos, so back
200 if (i != scenes.begin()) {
207 /* go back to the final scene and use it */
214 if (msc->program() != last_delivered_program || msc->bank() != last_delivered_bank) {
215 non_rt_deliver (msc);
220 MIDISceneChanger::set_input_port (MIDI::Port* mp)
224 incoming_connections.drop_connections();
228 /* midi port is asynchronous. MIDI parsing will be carried out
229 * by the MIDI UI thread which will emit the relevant signals
230 * and thus invoke our callbacks as necessary.
233 for (int channel = 0; channel < 16; ++channel) {
234 input_port->parser()->channel_bank_change[channel].connect_same_thread (incoming_connections, boost::bind (&MIDISceneChanger::bank_change_input, this, _1, _2, channel));
235 input_port->parser()->channel_program_change[channel].connect_same_thread (incoming_connections, boost::bind (&MIDISceneChanger::program_change_input, this, _1, _2, channel));
241 MIDISceneChanger::set_output_port (boost::shared_ptr<MidiPort> mp)
247 MIDISceneChanger::set_recording (bool yn)
253 MIDISceneChanger::recording() const
255 return _session.transport_rolling() && _session.get_record_enabled();
259 MIDISceneChanger::bank_change_input (MIDI::Parser& /*parser*/, unsigned short, int)
262 have_seen_bank_changes = true;
264 MIDIInputActivity (); /* EMIT SIGNAL */
268 MIDISceneChanger::program_change_input (MIDI::Parser& parser, MIDI::byte program, int channel)
270 framecnt_t time = parser.get_timestamp ();
272 last_program_message_time = time;
275 MIDIInputActivity (); /* EMIT SIGNAL */
276 jump_to (input_port->channel (channel)->bank(), program);
280 Locations* locations (_session.locations ());
282 bool new_mark = false;
283 framecnt_t slop = (framecnt_t) floor ((Config->get_inter_scene_gap_msecs() / 1000.0) * _session.frame_rate());
285 /* check for marker at current location */
287 loc = locations->mark_at (time, slop);
290 /* create a new marker at the desired position */
292 std::string new_name;
294 if (!locations->next_available_name (new_name, _("Scene "))) {
295 std::cerr << "No new marker name available\n";
299 loc = new Location (_session, time, time, new_name, Location::IsMark);
305 if (have_seen_bank_changes) {
306 bank = input_port->channel (channel)->bank();
311 MIDISceneChange* msc =new MIDISceneChange (channel, bank, program & 0x7f);
313 /* check for identical scene change so we can re-use color, if any */
315 Locations::LocationList copy (locations->list());
317 for (Locations::LocationList::const_iterator l = copy.begin(); l != copy.end(); ++l) {
318 boost::shared_ptr<MIDISceneChange> m = boost::dynamic_pointer_cast<MIDISceneChange>((*l)->scene_change());
320 if (m && (*m.get()) == *msc) {
321 msc->set_color (m->color ());
326 loc->set_scene_change (boost::shared_ptr<MIDISceneChange> (msc));
328 /* this will generate a "changed" signal to be emitted by locations,
329 and we will call ::gather() to update our list of MIDI events.
333 locations->add (loc);
336 MIDIInputActivity (); /* EMIT SIGNAL */
340 MIDISceneChanger::jump_to (int bank, int program)
342 const Locations::LocationList& locations (_session.locations()->list());
343 boost::shared_ptr<SceneChange> sc;
344 framepos_t where = max_framepos;
346 for (Locations::LocationList::const_iterator l = locations.begin(); l != locations.end(); ++l) {
348 if ((sc = (*l)->scene_change()) != 0) {
350 boost::shared_ptr<MIDISceneChange> msc = boost::dynamic_pointer_cast<MIDISceneChange> (sc);
352 if (msc->bank() == bank && msc->program() == program && (*l)->start() < where) {
353 where = (*l)->start();
358 if (where != max_framepos) {
359 _session.request_locate (where);