2 Copyright (C) 2016 Robin Gareus <robin@gareus.org>
3 Copyright (C) 2006 Paul Davis
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU General Public License as published by the Free
7 Software Foundation; either version 2 of the License, or (at your option)
10 This program is distributed in the hope that it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include <glibmm/miscutils.h>
22 #include <glibmm/fileutils.h>
24 #include "pbd/gstdio_compat.h"
25 #include "pbd/locale_guard.h"
26 #include "pbd/pthread_utils.h"
28 #include "ardour/audio_buffer.h"
29 #include "ardour/buffer_set.h"
30 #include "ardour/filesystem_paths.h"
31 #include "ardour/luabindings.h"
32 #include "ardour/luaproc.h"
33 #include "ardour/luascripting.h"
34 #include "ardour/midi_buffer.h"
35 #include "ardour/plugin.h"
36 #include "ardour/session.h"
38 #include "LuaBridge/LuaBridge.h"
42 using namespace ARDOUR;
45 LuaProc::LuaProc (AudioEngine& engine,
47 const std::string &script)
48 : Plugin (engine, session)
49 , _mempool ("LuaProc", 2097152)
51 , lua (lua_newstate (&PBD::TLSF::lalloc, &_mempool))
52 #elif defined USE_MALLOC
55 , lua (lua_newstate (&PBD::ReallocPool::lalloc, &_mempool))
59 , _lua_does_channelmapping (false)
60 , _lua_has_inline_display (false)
61 , _designated_bypass_port (UINT32_MAX)
64 , _has_midi_input (false)
65 , _has_midi_output (false)
69 /* when loading a session, or pasing a processor,
70 * the script is set during set_state();
72 if (!_script.empty () && load_script ()) {
73 throw failed_constructor ();
77 LuaProc::LuaProc (const LuaProc &other)
79 , _mempool ("LuaProc", 2097152)
81 , lua (lua_newstate (&PBD::TLSF::lalloc, &_mempool))
82 #elif defined USE_MALLOC
85 , lua (lua_newstate (&PBD::ReallocPool::lalloc, &_mempool))
88 , _script (other.script ())
89 , _lua_does_channelmapping (false)
90 , _lua_has_inline_display (false)
91 , _designated_bypass_port (UINT32_MAX)
94 , _has_midi_input (false)
95 , _has_midi_output (false)
100 throw failed_constructor ();
103 for (uint32_t i = 0; i < parameter_count (); ++i) {
104 _control_data[i] = other._shadow_data[i];
105 _shadow_data[i] = other._shadow_data[i];
109 LuaProc::~LuaProc () {
110 #ifdef WITH_LUAPROC_STATS
111 if (_info && _stats_cnt > 0) {
112 printf ("LuaProc: '%s' run() avg: %.3f max: %.3f [ms]\n",
113 _info->name.c_str (),
114 0.0001f * _stats_avg[0] / (float) _stats_cnt,
115 0.0001f * _stats_max[0]);
116 printf ("LuaProc: '%s' gc() avg: %.3f max: %.3f [ms]\n",
117 _info->name.c_str (),
118 0.0001f * _stats_avg[1] / (float) _stats_cnt,
119 0.0001f * _stats_max[1]);
122 lua.do_command ("collectgarbage();");
124 delete [] _control_data;
125 delete [] _shadow_data;
131 #ifdef WITH_LUAPROC_STATS
132 _stats_avg[0] = _stats_avg[1] = _stats_max[0] = _stats_max[1] = _stats_cnt = 0;
136 lua.Print.connect (sigc::mem_fun (*this, &LuaProc::lua_print));
137 // register session object
138 lua_State* L = lua.getState ();
139 LuaBindings::stddef (L);
140 LuaBindings::common (L);
141 LuaBindings::dsp (L);
143 luabridge::getGlobalNamespace (L)
144 .beginNamespace ("Ardour")
145 .beginClass <LuaProc> ("LuaProc")
146 .addFunction ("queue_draw", &LuaProc::queue_draw)
147 .addFunction ("shmem", &LuaProc::instance_shm)
148 .addFunction ("table", &LuaProc::instance_ref)
152 // add session to global lua namespace
153 luabridge::push <Session *> (L, &_session);
154 lua_setglobal (L, "Session");
157 luabridge::push <LuaProc *> (L, this);
158 lua_setglobal (L, "self");
161 lua.do_command ("io = nil os = nil loadfile = nil require = nil dofile = nil package = nil debug = nil");
163 lua.do_command ("for n in pairs(_G) do print(n) end print ('----')"); // print global env
165 lua.do_command ("function ardour () end");
169 LuaProc::lua_print (std::string s) {
170 std::cout <<"LuaProc: " << s << "\n";
171 PBD::error << "LuaProc: " << s << "\n";
175 LuaProc::load_script ()
177 assert (!_lua_dsp); // don't allow to re-initialize
178 LuaPluginInfoPtr lpi;
180 // TODO: refine APIs; function arguments..
181 // - perform channel-map in ardour (silent/scratch buffers) ?
182 // - control-port API (explicit get/set functions ??)
183 // - latency reporting (global var? ctrl-port? set-function ?)
184 // - MIDI -> sparse table of events
185 // { [sample] => { Event }, .. }
186 // or { { sample, Event }, .. }
189 LuaScriptInfoPtr lsi = LuaScripting::script_info (_script);
190 lpi = LuaPluginInfoPtr (new LuaPluginInfo (lsi));
193 _mempool.set_name ("LuaProc: " + lsi->name);
194 _docs = lsi->description;
195 } catch (failed_constructor& err) {
199 lua_State* L = lua.getState ();
200 lua.do_command (_script);
202 // check if script has a DSP callback
203 luabridge::LuaRef lua_dsp_run = luabridge::getGlobal (L, "dsp_run");
204 luabridge::LuaRef lua_dsp_map = luabridge::getGlobal (L, "dsp_runmap");
206 if ((lua_dsp_run.type () != LUA_TFUNCTION) == (lua_dsp_map.type () != LUA_TFUNCTION)) {
210 if (lua_dsp_run.type () == LUA_TFUNCTION) {
211 _lua_dsp = new luabridge::LuaRef (lua_dsp_run);
213 else if (lua_dsp_map.type () == LUA_TFUNCTION) {
214 _lua_dsp = new luabridge::LuaRef (lua_dsp_map);
215 _lua_does_channelmapping = true;
221 // initialize the DSP if needed
222 luabridge::LuaRef lua_dsp_init = luabridge::getGlobal (L, "dsp_init");
223 if (lua_dsp_init.type () == LUA_TFUNCTION) {
225 lua_dsp_init (_session.nominal_frame_rate ());
226 } catch (luabridge::LuaException const& e) {
232 luabridge::LuaRef lua_dsp_has_midi_in = luabridge::getGlobal (L, "dsp_has_midi_input");
233 if (lua_dsp_has_midi_in.type () == LUA_TFUNCTION) {
235 _has_midi_input = lua_dsp_has_midi_in ();
236 } catch (luabridge::LuaException const& e) {
241 luabridge::LuaRef lua_dsp_has_midi_out = luabridge::getGlobal (L, "dsp_has_midi_output");
242 if (lua_dsp_has_midi_out.type () == LUA_TFUNCTION) {
244 _has_midi_output = lua_dsp_has_midi_out ();
245 } catch (luabridge::LuaException const& e) {
250 _ctrl_params.clear ();
252 luabridge::LuaRef lua_render = luabridge::getGlobal (L, "render_inline");
253 if (lua_render.isFunction ()) {
254 _lua_has_inline_display = true;
257 luabridge::LuaRef lua_params = luabridge::getGlobal (L, "dsp_params");
258 if (lua_params.isFunction ()) {
260 // call function // add try {} catch (luabridge::LuaException const& e)
261 luabridge::LuaRef params = lua_params ();
263 if (params.isTable ()) {
265 for (luabridge::Iterator i (params); !i.isNil (); ++i) {
267 if (!i.key ().isNumber ()) { return false; }
268 if (!i.value ().isTable ()) { return false; }
269 if (!i.value ()["type"].isString ()) { return false; }
270 if (!i.value ()["name"].isString ()) { return false; }
271 if (!i.value ()["min"].isNumber ()) { return false; }
272 if (!i.value ()["max"].isNumber ()) { return false; }
274 int pn = i.key ().cast<int> ();
275 std::string type = i.value ()["type"].cast<std::string> ();
276 if (type == "input") {
277 if (!i.value ()["default"].isNumber ()) { return false; }
278 _ctrl_params.push_back (std::make_pair (false, pn));
280 else if (type == "output") {
281 _ctrl_params.push_back (std::make_pair (true, pn));
285 assert (pn == (int) _ctrl_params.size ());
287 //_param_desc[pn] = boost::shared_ptr<ParameterDescriptor> (new ParameterDescriptor());
288 luabridge::LuaRef lr = i.value ();
290 if (type == "input") {
291 _param_desc[pn].normal = lr["default"].cast<float> ();
293 _param_desc[pn].normal = lr["min"].cast<float> (); // output-port, no default
295 _param_desc[pn].lower = lr["min"].cast<float> ();
296 _param_desc[pn].upper = lr["max"].cast<float> ();
297 _param_desc[pn].toggled = lr["toggled"].isBoolean () && (lr["toggled"]).cast<bool> ();
298 _param_desc[pn].logarithmic = lr["logarithmic"].isBoolean () && (lr["logarithmic"]).cast<bool> ();
299 _param_desc[pn].integer_step = lr["integer"].isBoolean () && (lr["integer"]).cast<bool> ();
300 _param_desc[pn].sr_dependent = lr["ratemult"].isBoolean () && (lr["ratemult"]).cast<bool> ();
301 _param_desc[pn].enumeration = lr["enum"].isBoolean () && (lr["enum"]).cast<bool> ();
303 if (lr["bypass"].isBoolean () && (lr["bypass"]).cast<bool> ()) {
304 _designated_bypass_port = pn - 1; // lua table starts at 1.
307 if (lr["unit"].isString ()) {
308 std::string unit = lr["unit"].cast<std::string> ();
309 if (unit == "dB") { _param_desc[pn].unit = ParameterDescriptor::DB; }
310 else if (unit == "Hz") { _param_desc[pn].unit = ParameterDescriptor::HZ; }
311 else if (unit == "Midi Note") { _param_desc[pn].unit = ParameterDescriptor::MIDI_NOTE; }
313 _param_desc[pn].label = (lr["name"]).cast<std::string> ();
314 _param_desc[pn].scale_points = parse_scale_points (&lr);
316 luabridge::LuaRef doc = lr["doc"];
317 if (doc.isString ()) {
318 _param_doc[pn] = doc.cast<std::string> ();
322 assert (!(_param_desc[pn].toggled && _param_desc[pn].logarithmic));
327 _control_data = new float[parameter_count ()];
328 _shadow_data = new float[parameter_count ()];
330 for (uint32_t i = 0; i < parameter_count (); ++i) {
331 if (parameter_is_input (i)) {
332 _control_data[i] = _shadow_data[i] = default_value (i);
336 // expose ctrl-ports to global lua namespace
337 luabridge::push <float *> (L, _control_data);
338 lua_setglobal (L, "CtrlPorts");
340 return false; // no error
344 LuaProc::can_support_io_configuration (const ChanCount& in, ChanCount& out, ChanCount* imprecise)
346 // caller must hold process lock (no concurrent calls to interpreter
347 _output_configs.clear ();
349 lua_State* L = lua.getState ();
350 luabridge::LuaRef ioconfig = luabridge::getGlobal (L, "dsp_ioconfig");
351 if (!ioconfig.isFunction ()) {
355 luabridge::LuaRef *_iotable = NULL; // can't use reference :(
357 luabridge::LuaRef iotable = ioconfig ();
358 if (iotable.isTable ()) {
359 _iotable = new luabridge::LuaRef (iotable);
361 } catch (luabridge::LuaException const& e) {
369 // now we can reference it.
370 luabridge::LuaRef iotable (*_iotable);
373 if ((iotable).length () < 1) {
377 const int audio_in = in.n_audio ();
378 const int midi_in = in.n_midi ();
380 // preferred setting (provided by plugin_insert)
381 const int preferred_out = out.n_audio ();
385 float penalty = 9999;
388 #define FOUNDCFG_PENALTY(in, out, p) { \
389 _output_configs.insert (out); \
392 midi_out = possible_midiout; \
394 imprecise->set (DataType::AUDIO, (in)); \
395 imprecise->set (DataType::MIDI, possible_midiin); \
402 #define FOUNDCFG_IMPRECISE(in, out) { \
403 const float p = fabsf ((float)(out) - preferred_out) * \
404 (((out) > preferred_out) ? 1.1 : 1) \
405 + fabsf ((float)(in) - audio_in) * \
406 (((in) > audio_in) ? 275 : 250); \
407 FOUNDCFG_PENALTY(in, out, p); \
410 #define FOUNDCFG(out) \
411 FOUNDCFG_IMPRECISE(audio_in, out)
413 #define ANYTHINGGOES \
414 _output_configs.insert (0);
416 #define UPTO(nch) { \
417 for (int n = 1; n < nch; ++n) { \
418 _output_configs.insert (n); \
426 for (luabridge::Iterator i (iotable); !i.isNil (); ++i) {
427 luabridge::LuaRef io (i.value ());
432 int possible_in = io["audio_in"].isNumber() ? io["audio_in"] : -1;
433 int possible_out = io["audio_out"].isNumber() ? io["audio_out"] : -1;
434 int possible_midiin = _has_midi_input ? 1 : 0;
435 int possible_midiout = _has_midi_output ? 1 : 0;
437 if (midi_in > 0 && possible_midiin == 0 && !imprecise) {
442 if ((possible_in == audio_in) && (possible_out == preferred_out)) {
443 /* Set penalty so low that this output configuration
444 * will trump any other one */
445 FOUNDCFG_PENALTY(audio_in, preferred_out, -1);
448 if (possible_out == 0 && possible_midiout == 0) {
449 /* skip configurations with no output at all */
453 if (possible_in == -1 || possible_in == -2) {
454 /* wildcard for input */
455 if (possible_out == possible_in) {
456 /* either both -1 or both -2 (invalid and
457 * interpreted as both -1): out must match in */
459 } else if (possible_out == -3 - possible_in) {
460 /* one is -1, the other is -2: any output configuration
461 * possible, pick what the insert prefers */
462 FOUNDCFG (preferred_out);
464 } else if (possible_out < -2) {
465 /* variable number of outputs up to -N,
466 * invalid if in == -2 but we accept it anyway */
467 FOUNDCFG (min (-possible_out, preferred_out));
470 /* exact number of outputs */
471 FOUNDCFG (possible_out);
475 if (possible_in < -2 || possible_in >= 0) {
476 /* specified number, exact or up to */
478 if (possible_in >= 0) {
479 /* configuration can only match possible_in */
480 desired_in = possible_in;
482 /* configuration can match up to -possible_in */
483 desired_in = min (-possible_in, audio_in);
485 if (!imprecise && audio_in != desired_in) {
486 /* skip that configuration, it cannot match
487 * the required audio input count, and we
488 * cannot ask for change via \imprecise */
489 } else if (possible_out == -1 || possible_out == -2) {
490 /* any output configuration possible
491 * out == -2 is invalid, interpreted as out == -1.
492 * Really imprecise only if desired_in != audio_in */
493 FOUNDCFG_IMPRECISE (desired_in, preferred_out);
495 } else if (possible_out < -2) {
496 /* variable number of outputs up to -N
497 * not specified if in > 0, but we accept it anyway.
498 * Really imprecise only if desired_in != audio_in */
499 FOUNDCFG_IMPRECISE (desired_in, min (-possible_out, preferred_out));
502 /* exact number of outputs
503 * Really imprecise only if desired_in != audio_in */
504 FOUNDCFG_IMPRECISE (desired_in, possible_out);
506 // ideally we'll also find the closest, best matching
507 // input configuration with minimal output penalty...
517 _selected_in = *imprecise;
522 out.set (DataType::MIDI, midi_out);
523 out.set (DataType::AUDIO, audio_out);
530 LuaProc::configure_io (ChanCount in, ChanCount out)
532 in.set (DataType::MIDI, _has_midi_input ? 1 : 0);
533 out.set (DataType::MIDI, _has_midi_output ? 1 : 0);
535 _info->n_inputs = _selected_in;
536 _info->n_outputs = _selected_out;
538 // configure the DSP if needed
539 if (in != _configured_in || out != _configured_out) {
540 lua_State* L = lua.getState ();
541 luabridge::LuaRef lua_dsp_configure = luabridge::getGlobal (L, "dsp_configure");
542 if (lua_dsp_configure.type () == LUA_TFUNCTION) {
544 luabridge::LuaRef io = lua_dsp_configure (&in, &out);
546 ChanCount lin (_selected_in);
547 ChanCount lout (_selected_out);
549 if (io["audio_in"].type() == LUA_TNUMBER) {
550 const int c = io["audio_in"].cast<int> ();
552 lin.set (DataType::AUDIO, c);
555 if (io["audio_out"].type() == LUA_TNUMBER) {
556 const int c = io["audio_out"].cast<int> ();
558 lout.set (DataType::AUDIO, c);
561 if (io["midi_in"].type() == LUA_TNUMBER) {
562 const int c = io["midi_in"].cast<int> ();
564 lin.set (DataType::MIDI, c);
567 if (io["midi_out"].type() == LUA_TNUMBER) {
568 const int c = io["midi_out"].cast<int> ();
570 lout.set (DataType::MIDI, c);
573 _info->n_inputs = lin;
574 _info->n_outputs = lout;
576 } catch (luabridge::LuaException const& e) {
577 PBD::error << "LuaException: " << e.what () << "\n";
579 std::cerr << "LuaException: " << e.what () << "\n";
587 _configured_out = out;
593 LuaProc::connect_and_run (BufferSet& bufs,
594 framepos_t start, framepos_t end, double speed,
595 ChanMapping in, ChanMapping out,
596 pframes_t nframes, framecnt_t offset)
602 Plugin::connect_and_run (bufs, start, end, speed, in, out, nframes, offset);
604 // This is needed for ARDOUR::Session requests :(
605 if (! SessionEvent::has_per_thread_pool ()) {
607 snprintf (name, 64, "Proc-%p", this);
608 pthread_set_name (name);
609 SessionEvent::create_per_thread_pool (name, 64);
610 PBD::notify_event_loops_about_thread_creation (pthread_self(), name, 64);
613 uint32_t const n = parameter_count ();
614 for (uint32_t i = 0; i < n; ++i) {
615 if (parameter_is_control (i) && parameter_is_input (i)) {
616 _control_data[i] = _shadow_data[i];
620 #ifdef WITH_LUAPROC_STATS
621 int64_t t0 = g_get_monotonic_time ();
625 if (_lua_does_channelmapping) {
626 // run the DSP function
627 (*_lua_dsp)(&bufs, in, out, nframes, offset);
630 BufferSet& silent_bufs = _session.get_silent_buffers (ChanCount (DataType::AUDIO, 1));
631 BufferSet& scratch_bufs = _session.get_scratch_buffers (ChanCount (DataType::AUDIO, 1));
633 lua_State* L = lua.getState ();
634 luabridge::LuaRef in_map (luabridge::newTable (L));
635 luabridge::LuaRef out_map (luabridge::newTable (L));
637 const uint32_t audio_in = _configured_in.n_audio ();
638 const uint32_t audio_out = _configured_out.n_audio ();
639 const uint32_t midi_in = _configured_in.n_midi ();
641 for (uint32_t ap = 0; ap < audio_in; ++ap) {
643 const uint32_t buf_index = in.get(DataType::AUDIO, ap, &valid);
645 in_map[ap + 1] = bufs.get_audio (buf_index).data (offset);
647 in_map[ap + 1] = silent_bufs.get_audio (0).data (offset);
650 for (uint32_t ap = 0; ap < audio_out; ++ap) {
652 const uint32_t buf_index = out.get(DataType::AUDIO, ap, &valid);
654 out_map[ap + 1] = bufs.get_audio (buf_index).data (offset);
656 out_map[ap + 1] = scratch_bufs.get_audio (0).data (offset);
660 luabridge::LuaRef lua_midi_src_tbl (luabridge::newTable (L));
661 int e = 1; // > 1 port, we merge events (unsorted)
662 for (uint32_t mp = 0; mp < midi_in; ++mp) {
664 const uint32_t idx = in.get(DataType::MIDI, mp, &valid);
666 for (MidiBuffer::iterator m = bufs.get_midi(idx).begin();
667 m != bufs.get_midi(idx).end(); ++m, ++e) {
668 const Evoral::MIDIEvent<framepos_t> ev(*m, false);
669 luabridge::LuaRef lua_midi_data (luabridge::newTable (L));
670 const uint8_t* data = ev.buffer();
671 for (uint32_t i = 0; i < ev.size(); ++i) {
672 lua_midi_data [i + 1] = data[i];
674 luabridge::LuaRef lua_midi_event (luabridge::newTable (L));
675 lua_midi_event["time"] = 1 + (*m).time();
676 lua_midi_event["data"] = lua_midi_data;
677 lua_midi_src_tbl[e] = lua_midi_event;
682 if (_has_midi_input) {
683 // XXX TODO This needs a better solution than global namespace
684 luabridge::push (L, lua_midi_src_tbl);
685 lua_setglobal (L, "midiin");
688 luabridge::LuaRef lua_midi_sink_tbl (luabridge::newTable (L));
689 if (_has_midi_output) {
690 luabridge::push (L, lua_midi_sink_tbl);
691 lua_setglobal (L, "midiout");
694 // run the DSP function
695 (*_lua_dsp)(in_map, out_map, nframes);
697 // copy back midi events
698 if (_has_midi_output && lua_midi_sink_tbl.isTable ()) {
700 const uint32_t idx = out.get(DataType::MIDI, 0, &valid);
701 if (valid && bufs.count().n_midi() > idx) {
702 MidiBuffer& mbuf = bufs.get_midi(idx);
704 for (luabridge::Iterator i (lua_midi_sink_tbl); !i.isNil (); ++i) {
705 if (!i.key ().isNumber ()) { continue; }
706 if (!i.value ()["time"].isNumber ()) { continue; }
707 if (!i.value ()["data"].isTable ()) { continue; }
708 luabridge::LuaRef data_tbl (i.value ()["data"]);
709 framepos_t tme = i.value ()["time"];
710 if (tme < 1 || tme > nframes) { continue; }
713 for (luabridge::Iterator di (data_tbl); !di.isNil () && size < sizeof(data); ++di, ++size) {
714 data[size] = di.value ();
716 if (size > 0 && size < 64) {
717 mbuf.push_back(tme - 1, size, data);
724 } catch (luabridge::LuaException const& e) {
725 PBD::error << "LuaException: " << e.what () << "\n";
727 std::cerr << "LuaException: " << e.what () << "\n";
731 #ifdef WITH_LUAPROC_STATS
732 int64_t t1 = g_get_monotonic_time ();
735 lua.collect_garbage_step ();
736 #ifdef WITH_LUAPROC_STATS
738 int64_t t2 = g_get_monotonic_time ();
739 int64_t ela0 = t1 - t0;
740 int64_t ela1 = t2 - t1;
741 if (ela0 > _stats_max[0]) _stats_max[0] = ela0;
742 if (ela1 > _stats_max[1]) _stats_max[1] = ela1;
743 _stats_avg[0] += ela0;
744 _stats_avg[1] += ela1;
751 LuaProc::add_state (XMLNode* root) const
757 gchar* b64 = g_base64_encode ((const guchar*)_script.c_str (), _script.size ());
758 std::string b64s (b64);
760 XMLNode* script_node = new XMLNode (X_("script"));
761 script_node->add_property (X_("lua"), LUA_VERSION);
762 script_node->add_content (b64s);
763 root->add_child_nocopy (*script_node);
765 for (uint32_t i = 0; i < parameter_count(); ++i) {
766 if (parameter_is_input(i) && parameter_is_control(i)) {
767 child = new XMLNode("Port");
768 snprintf(buf, sizeof(buf), "%u", i);
769 child->add_property("id", std::string(buf));
770 snprintf(buf, sizeof(buf), "%+f", _shadow_data[i]);
771 child->add_property("value", std::string(buf));
772 root->add_child_nocopy(*child);
778 LuaProc::set_script_from_state (const XMLNode& node)
781 if (node.name () != state_node_name ()) {
785 if ((child = node.child (X_("script"))) != 0) {
786 for (XMLNodeList::const_iterator n = child->children ().begin (); n != child->children ().end (); ++n) {
787 if (!(*n)->is_content ()) { continue; }
789 guchar* buf = g_base64_decode ((*n)->content ().c_str (), &size);
790 _script = std::string ((const char*)buf, size);
792 if (load_script ()) {
793 PBD::error << _("Failed to load Lua script from session state.") << endmsg;
795 std::cerr << "Failed Lua Script: " << _script << std::endl;
802 if (_script.empty ()) {
803 PBD::error << _("Session State for LuaProcessor did not include a Lua script.") << endmsg;
807 PBD::error << _("Invalid/incompatible Lua script found for LuaProcessor.") << endmsg;
814 LuaProc::set_state (const XMLNode& node, int version)
816 #ifndef NO_PLUGIN_STATE
818 XMLProperty const * prop;
819 XMLNodeConstIterator iter;
827 if (_script.empty ()) {
828 if (set_script_from_state (node)) {
833 #ifndef NO_PLUGIN_STATE
834 if (node.name() != state_node_name()) {
835 error << _("Bad node sent to LuaProc::set_state") << endmsg;
839 nodes = node.children ("Port");
840 for (iter = nodes.begin(); iter != nodes.end(); ++iter) {
842 if ((prop = child->property("id")) != 0) {
843 port = prop->value().c_str();
845 warning << _("LuaProc: port has no symbol, ignored") << endmsg;
848 if ((prop = child->property("value")) != 0) {
849 value = prop->value().c_str();
851 warning << _("LuaProc: port has no value, ignored") << endmsg;
854 sscanf (port, "%" PRIu32, &port_id);
855 set_parameter (port_id, atof(value));
859 return Plugin::set_state (node, version);
863 LuaProc::parameter_count () const
865 return _ctrl_params.size ();
869 LuaProc::default_value (uint32_t port)
871 if (_ctrl_params[port].first) {
875 int lp = _ctrl_params[port].second;
876 return _param_desc[lp].normal;
880 LuaProc::set_parameter (uint32_t port, float val)
882 assert (port < parameter_count ());
883 if (get_parameter (port) == val) {
886 _shadow_data[port] = val;
887 Plugin::set_parameter (port, val);
891 LuaProc::get_parameter (uint32_t port) const
893 if (parameter_is_input (port)) {
894 return _shadow_data[port];
896 return _control_data[port];
901 LuaProc::get_parameter_descriptor (uint32_t port, ParameterDescriptor& desc) const
903 assert (port <= parameter_count ());
904 int lp = _ctrl_params[port].second;
905 const ParameterDescriptor& d (_param_desc.find(lp)->second);
907 desc.lower = d.lower;
908 desc.upper = d.upper;
909 desc.normal = d.normal;
910 desc.toggled = d.toggled;
911 desc.logarithmic = d.logarithmic;
912 desc.integer_step = d.integer_step;
913 desc.sr_dependent = d.sr_dependent;
914 desc.enumeration = d.enumeration;
916 desc.label = d.label;
917 desc.scale_points = d.scale_points;
919 desc.update_steps ();
924 LuaProc::get_parameter_docs (uint32_t port) const {
925 assert (port <= parameter_count ());
926 int lp = _ctrl_params[port].second;
927 return _param_doc.find(lp)->second;
931 LuaProc::nth_parameter (uint32_t port, bool& ok) const
933 if (port < _ctrl_params.size ()) {
942 LuaProc::parameter_is_input (uint32_t port) const
944 assert (port < _ctrl_params.size ());
945 return (!_ctrl_params[port].first);
949 LuaProc::parameter_is_output (uint32_t port) const
951 assert (port < _ctrl_params.size ());
952 return (_ctrl_params[port].first);
955 std::set<Evoral::Parameter>
956 LuaProc::automatable () const
958 std::set<Evoral::Parameter> automatables;
959 for (uint32_t i = 0; i < _ctrl_params.size (); ++i) {
960 if (parameter_is_input (i)) {
961 automatables.insert (automatables.end (), Evoral::Parameter (PluginAutomation, 0, i));
968 LuaProc::describe_parameter (Evoral::Parameter param)
970 if (param.type () == PluginAutomation && param.id () < parameter_count ()) {
971 int lp = _ctrl_params[param.id ()].second;
972 return _param_desc[lp].label;
978 LuaProc::print_parameter (uint32_t param, char* buf, uint32_t len) const
981 if (param < parameter_count ()) {
982 snprintf (buf, len, "%.3f", get_parameter (param));
989 boost::shared_ptr<ScalePoints>
990 LuaProc::parse_scale_points (luabridge::LuaRef* lr)
992 if (!(*lr)["scalepoints"].isTable()) {
993 return boost::shared_ptr<ScalePoints> ();
997 boost::shared_ptr<ScalePoints> rv = boost::shared_ptr<ScalePoints>(new ScalePoints());
998 luabridge::LuaRef scalepoints ((*lr)["scalepoints"]);
1000 for (luabridge::Iterator i (scalepoints); !i.isNil (); ++i) {
1001 if (!i.key ().isString ()) { continue; }
1002 if (!i.value ().isNumber ()) { continue; }
1003 rv->insert(make_pair(i.key ().cast<std::string> (),
1004 i.value ().cast<float> ()));
1008 if (rv->size() > 0) {
1011 return boost::shared_ptr<ScalePoints> ();
1014 boost::shared_ptr<ScalePoints>
1015 LuaProc::get_scale_points (uint32_t port) const
1017 int lp = _ctrl_params[port].second;
1018 return _param_desc.find(lp)->second.scale_points;
1022 LuaProc::setup_lua_inline_gui (LuaState *lua_gui)
1024 lua_State* LG = lua_gui->getState ();
1025 LuaBindings::stddef (LG);
1026 LuaBindings::common (LG);
1027 LuaBindings::dsp (LG);
1029 lua_gui->Print.connect (sigc::mem_fun (*this, &LuaProc::lua_print));
1030 lua_gui->do_command ("function ardour () end");
1031 lua_gui->do_command (_script);
1033 // TODO think: use a weak-pointer here ?
1034 // (the GUI itself uses a shared ptr to this plugin, so we should be good)
1035 luabridge::getGlobalNamespace (LG)
1036 .beginNamespace ("Ardour")
1037 .beginClass <LuaProc> ("LuaProc")
1038 .addFunction ("shmem", &LuaProc::instance_shm)
1039 .addFunction ("table", &LuaProc::instance_ref)
1043 luabridge::push <LuaProc *> (LG, this);
1044 lua_setglobal (LG, "self");
1046 luabridge::push <float *> (LG, _shadow_data);
1047 lua_setglobal (LG, "CtrlPorts");
1049 ////////////////////////////////////////////////////////////////////////////////
1051 #include "ardour/search_paths.h"
1055 LuaProc::preset_name_to_uri (const std::string& name) const
1057 std::string uri ("urn:lua:");
1061 sha1_write (&s, (const uint8_t *) name.c_str(), name.size ());
1062 sha1_write (&s, (const uint8_t *) _script.c_str(), _script.size ());
1063 sha1_result_hash (&s, hash);
1068 LuaProc::presets_file () const
1070 return string_compose ("lua-%1", _info->unique_id);
1074 LuaProc::presets_tree () const
1076 XMLTree* t = new XMLTree;
1077 std::string p = Glib::build_filename (ARDOUR::user_config_directory (), "presets");
1079 if (!Glib::file_test (p, Glib::FILE_TEST_IS_DIR)) {
1080 if (g_mkdir_with_parents (p.c_str(), 0755) != 0) {
1081 error << _("Unable to create LuaProc presets directory") << endmsg;
1085 p = Glib::build_filename (p, presets_file ());
1087 if (!Glib::file_test (p, Glib::FILE_TEST_EXISTS)) {
1088 t->set_root (new XMLNode (X_("LuaPresets")));
1092 t->set_filename (p);
1101 LuaProc::load_preset (PresetRecord r)
1103 boost::shared_ptr<XMLTree> t (presets_tree ());
1108 XMLNode* root = t->root ();
1109 for (XMLNodeList::const_iterator i = root->children().begin(); i != root->children().end(); ++i) {
1110 XMLProperty const * label = (*i)->property (X_("label"));
1112 if (label->value() != r.label) {
1116 for (XMLNodeList::const_iterator j = (*i)->children().begin(); j != (*i)->children().end(); ++j) {
1117 if ((*j)->name() == X_("Parameter")) {
1118 XMLProperty const * index = (*j)->property (X_("index"));
1119 XMLProperty const * value = (*j)->property (X_("value"));
1123 set_parameter (atoi (index->value().c_str()), atof (value->value().c_str ()));
1126 return Plugin::load_preset(r);
1132 LuaProc::do_save_preset (std::string name) {
1134 boost::shared_ptr<XMLTree> t (presets_tree ());
1139 std::string uri (preset_name_to_uri (name));
1141 XMLNode* p = new XMLNode (X_("Preset"));
1142 p->add_property (X_("uri"), uri);
1143 p->add_property (X_("label"), name);
1145 for (uint32_t i = 0; i < parameter_count(); ++i) {
1146 if (parameter_is_input (i)) {
1147 XMLNode* c = new XMLNode (X_("Parameter"));
1148 c->add_property (X_("index"), string_compose ("%1", i));
1149 c->add_property (X_("value"), string_compose ("%1", get_parameter (i)));
1150 p->add_child_nocopy (*c);
1153 t->root()->add_child_nocopy (*p);
1155 std::string f = Glib::build_filename (ARDOUR::user_config_directory (), "presets");
1156 f = Glib::build_filename (f, presets_file ());
1163 LuaProc::do_remove_preset (std::string name)
1165 boost::shared_ptr<XMLTree> t (presets_tree ());
1169 t->root()->remove_nodes_and_delete (X_("label"), name);
1170 std::string f = Glib::build_filename (ARDOUR::user_config_directory (), "presets");
1171 f = Glib::build_filename (f, presets_file ());
1176 LuaProc::find_presets ()
1178 boost::shared_ptr<XMLTree> t (presets_tree ());
1180 XMLNode* root = t->root ();
1181 for (XMLNodeList::const_iterator i = root->children().begin(); i != root->children().end(); ++i) {
1183 XMLProperty const * uri = (*i)->property (X_("uri"));
1184 XMLProperty const * label = (*i)->property (X_("label"));
1189 PresetRecord r (uri->value(), label->value(), true);
1190 _presets.insert (make_pair (r.uri, r));
1195 ////////////////////////////////////////////////////////////////////////////////
1197 LuaPluginInfo::LuaPluginInfo (LuaScriptInfoPtr lsi) {
1198 if (lsi->type != LuaScriptInfo::DSP) {
1199 throw failed_constructor ();
1204 creator = lsi->author;
1205 category = lsi->category;
1206 unique_id = lsi->unique_id;
1208 n_inputs.set (DataType::AUDIO, 1);
1209 n_outputs.set (DataType::AUDIO, 1);
1212 _is_instrument = category == "Instrument";
1216 LuaPluginInfo::load (Session& session)
1218 std::string script = "";
1219 if (!Glib::file_test (path, Glib::FILE_TEST_EXISTS)) {
1220 return PluginPtr ();
1224 script = Glib::file_get_contents (path);
1225 } catch (Glib::FileError err) {
1226 return PluginPtr ();
1229 if (script.empty ()) {
1230 return PluginPtr ();
1234 PluginPtr plugin (new LuaProc (session.engine (), session, script));
1236 } catch (failed_constructor& err) {
1239 return PluginPtr ();
1242 std::vector<Plugin::PresetRecord>
1243 LuaPluginInfo::get_presets (bool /*user_only*/) const
1245 std::vector<Plugin::PresetRecord> p;
1246 XMLTree* t = new XMLTree;
1247 std::string pf = Glib::build_filename (ARDOUR::user_config_directory (), "presets", string_compose ("lua-%1", unique_id));
1248 if (Glib::file_test (pf, Glib::FILE_TEST_EXISTS)) {
1249 t->set_filename (pf);
1251 XMLNode* root = t->root ();
1252 for (XMLNodeList::const_iterator i = root->children().begin(); i != root->children().end(); ++i) {
1253 XMLProperty const * uri = (*i)->property (X_("uri"));
1254 XMLProperty const * label = (*i)->property (X_("label"));
1255 p.push_back (Plugin::PresetRecord (uri->value(), label->value(), true));