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 // "imprecise" matches
449 if (possible_out == 0) {
450 /* skip configurations with no audio output, unless
451 * the plugin is a midi filter or generator */
452 if (possible_in == 0 && _has_midi_output) {
454 FOUNDCFG(possible_out);
456 } else if (imprecise) {
457 // TODO hide audio input from plugin
458 FOUNDCFG_IMPRECISE (possible_in, possible_out);
464 if (possible_in == -1 || possible_in == -2) {
465 /* wildcard for input */
466 if (possible_out == possible_in) {
467 /* either both -1 or both -2 (invalid and
468 * interpreted as both -1): out must match in */
470 } else if (possible_out == -3 - possible_in) {
471 /* one is -1, the other is -2: any output configuration
472 * possible, pick what the insert prefers */
473 FOUNDCFG (preferred_out);
475 } else if (possible_out < -2) {
476 /* variable number of outputs up to -N,
477 * invalid if in == -2 but we accept it anyway */
478 FOUNDCFG (min (-possible_out, preferred_out));
481 /* exact number of outputs */
482 FOUNDCFG (possible_out);
486 if (possible_in < -2 || possible_in >= 0) {
487 /* specified number, exact or up to */
489 if (possible_in >= 0) {
490 /* configuration can only match possible_in */
491 desired_in = possible_in;
493 /* configuration can match up to -possible_in */
494 desired_in = min (-possible_in, audio_in);
496 if (!imprecise && audio_in != desired_in) {
497 /* skip that configuration, it cannot match
498 * the required audio input count, and we
499 * cannot ask for change via \imprecise */
500 } else if (possible_out == -1 || possible_out == -2) {
501 /* any output configuration possible
502 * out == -2 is invalid, interpreted as out == -1.
503 * Really imprecise only if desired_in != audio_in */
504 FOUNDCFG_IMPRECISE (desired_in, preferred_out);
506 } else if (possible_out < -2) {
507 /* variable number of outputs up to -N
508 * not specified if in > 0, but we accept it anyway.
509 * Really imprecise only if desired_in != audio_in */
510 FOUNDCFG_IMPRECISE (desired_in, min (-possible_out, preferred_out));
513 /* exact number of outputs
514 * Really imprecise only if desired_in != audio_in */
515 FOUNDCFG_IMPRECISE (desired_in, possible_out);
517 // ideally we'll also find the closest, best matching
518 // input configuration with minimal output penalty...
528 _selected_in = *imprecise;
533 out.set (DataType::MIDI, midi_out);
534 out.set (DataType::AUDIO, audio_out);
541 LuaProc::configure_io (ChanCount in, ChanCount out)
543 in.set (DataType::MIDI, _has_midi_input ? 1 : 0);
544 out.set (DataType::MIDI, _has_midi_output ? 1 : 0);
546 _info->n_inputs = _selected_in;
547 _info->n_outputs = _selected_out;
549 // configure the DSP if needed
550 if (in != _configured_in || out != _configured_out) {
551 lua_State* L = lua.getState ();
552 luabridge::LuaRef lua_dsp_configure = luabridge::getGlobal (L, "dsp_configure");
553 if (lua_dsp_configure.type () == LUA_TFUNCTION) {
555 luabridge::LuaRef io = lua_dsp_configure (&in, &out);
557 ChanCount lin (_selected_in);
558 ChanCount lout (_selected_out);
560 if (io["audio_in"].type() == LUA_TNUMBER) {
561 const int c = io["audio_in"].cast<int> ();
563 lin.set (DataType::AUDIO, c);
566 if (io["audio_out"].type() == LUA_TNUMBER) {
567 const int c = io["audio_out"].cast<int> ();
569 lout.set (DataType::AUDIO, c);
572 if (io["midi_in"].type() == LUA_TNUMBER) {
573 const int c = io["midi_in"].cast<int> ();
575 lin.set (DataType::MIDI, c);
578 if (io["midi_out"].type() == LUA_TNUMBER) {
579 const int c = io["midi_out"].cast<int> ();
581 lout.set (DataType::MIDI, c);
584 _info->n_inputs = lin;
585 _info->n_outputs = lout;
587 } catch (luabridge::LuaException const& e) {
588 PBD::error << "LuaException: " << e.what () << "\n";
590 std::cerr << "LuaException: " << e.what () << "\n";
598 _configured_out = out;
604 LuaProc::connect_and_run (BufferSet& bufs,
605 framepos_t start, framepos_t end, double speed,
606 ChanMapping in, ChanMapping out,
607 pframes_t nframes, framecnt_t offset)
613 Plugin::connect_and_run (bufs, start, end, speed, in, out, nframes, offset);
615 // This is needed for ARDOUR::Session requests :(
616 if (! SessionEvent::has_per_thread_pool ()) {
618 snprintf (name, 64, "Proc-%p", this);
619 pthread_set_name (name);
620 SessionEvent::create_per_thread_pool (name, 64);
621 PBD::notify_event_loops_about_thread_creation (pthread_self(), name, 64);
624 uint32_t const n = parameter_count ();
625 for (uint32_t i = 0; i < n; ++i) {
626 if (parameter_is_control (i) && parameter_is_input (i)) {
627 _control_data[i] = _shadow_data[i];
631 #ifdef WITH_LUAPROC_STATS
632 int64_t t0 = g_get_monotonic_time ();
636 if (_lua_does_channelmapping) {
637 // run the DSP function
638 (*_lua_dsp)(&bufs, in, out, nframes, offset);
641 BufferSet& silent_bufs = _session.get_silent_buffers (ChanCount (DataType::AUDIO, 1));
642 BufferSet& scratch_bufs = _session.get_scratch_buffers (ChanCount (DataType::AUDIO, 1));
644 lua_State* L = lua.getState ();
645 luabridge::LuaRef in_map (luabridge::newTable (L));
646 luabridge::LuaRef out_map (luabridge::newTable (L));
648 const uint32_t audio_in = _configured_in.n_audio ();
649 const uint32_t audio_out = _configured_out.n_audio ();
650 const uint32_t midi_in = _configured_in.n_midi ();
652 for (uint32_t ap = 0; ap < audio_in; ++ap) {
654 const uint32_t buf_index = in.get(DataType::AUDIO, ap, &valid);
656 in_map[ap + 1] = bufs.get_audio (buf_index).data (offset);
658 in_map[ap + 1] = silent_bufs.get_audio (0).data (offset);
661 for (uint32_t ap = 0; ap < audio_out; ++ap) {
663 const uint32_t buf_index = out.get(DataType::AUDIO, ap, &valid);
665 out_map[ap + 1] = bufs.get_audio (buf_index).data (offset);
667 out_map[ap + 1] = scratch_bufs.get_audio (0).data (offset);
671 luabridge::LuaRef lua_midi_src_tbl (luabridge::newTable (L));
672 int e = 1; // > 1 port, we merge events (unsorted)
673 for (uint32_t mp = 0; mp < midi_in; ++mp) {
675 const uint32_t idx = in.get(DataType::MIDI, mp, &valid);
677 for (MidiBuffer::iterator m = bufs.get_midi(idx).begin();
678 m != bufs.get_midi(idx).end(); ++m, ++e) {
679 const Evoral::MIDIEvent<framepos_t> ev(*m, false);
680 luabridge::LuaRef lua_midi_data (luabridge::newTable (L));
681 const uint8_t* data = ev.buffer();
682 for (uint32_t i = 0; i < ev.size(); ++i) {
683 lua_midi_data [i + 1] = data[i];
685 luabridge::LuaRef lua_midi_event (luabridge::newTable (L));
686 lua_midi_event["time"] = 1 + (*m).time();
687 lua_midi_event["data"] = lua_midi_data;
688 lua_midi_src_tbl[e] = lua_midi_event;
693 if (_has_midi_input) {
694 // XXX TODO This needs a better solution than global namespace
695 luabridge::push (L, lua_midi_src_tbl);
696 lua_setglobal (L, "midiin");
699 luabridge::LuaRef lua_midi_sink_tbl (luabridge::newTable (L));
700 if (_has_midi_output) {
701 luabridge::push (L, lua_midi_sink_tbl);
702 lua_setglobal (L, "midiout");
705 // run the DSP function
706 (*_lua_dsp)(in_map, out_map, nframes);
708 // copy back midi events
709 if (_has_midi_output && lua_midi_sink_tbl.isTable ()) {
711 const uint32_t idx = out.get(DataType::MIDI, 0, &valid);
712 if (valid && bufs.count().n_midi() > idx) {
713 MidiBuffer& mbuf = bufs.get_midi(idx);
715 for (luabridge::Iterator i (lua_midi_sink_tbl); !i.isNil (); ++i) {
716 if (!i.key ().isNumber ()) { continue; }
717 if (!i.value ()["time"].isNumber ()) { continue; }
718 if (!i.value ()["data"].isTable ()) { continue; }
719 luabridge::LuaRef data_tbl (i.value ()["data"]);
720 framepos_t tme = i.value ()["time"];
721 if (tme < 1 || tme > nframes) { continue; }
724 for (luabridge::Iterator di (data_tbl); !di.isNil () && size < sizeof(data); ++di, ++size) {
725 data[size] = di.value ();
727 if (size > 0 && size < 64) {
728 mbuf.push_back(tme - 1, size, data);
735 } catch (luabridge::LuaException const& e) {
736 PBD::error << "LuaException: " << e.what () << "\n";
738 std::cerr << "LuaException: " << e.what () << "\n";
742 #ifdef WITH_LUAPROC_STATS
743 int64_t t1 = g_get_monotonic_time ();
746 lua.collect_garbage_step ();
747 #ifdef WITH_LUAPROC_STATS
749 int64_t t2 = g_get_monotonic_time ();
750 int64_t ela0 = t1 - t0;
751 int64_t ela1 = t2 - t1;
752 if (ela0 > _stats_max[0]) _stats_max[0] = ela0;
753 if (ela1 > _stats_max[1]) _stats_max[1] = ela1;
754 _stats_avg[0] += ela0;
755 _stats_avg[1] += ela1;
762 LuaProc::add_state (XMLNode* root) const
768 gchar* b64 = g_base64_encode ((const guchar*)_script.c_str (), _script.size ());
769 std::string b64s (b64);
771 XMLNode* script_node = new XMLNode (X_("script"));
772 script_node->add_property (X_("lua"), LUA_VERSION);
773 script_node->add_content (b64s);
774 root->add_child_nocopy (*script_node);
776 for (uint32_t i = 0; i < parameter_count(); ++i) {
777 if (parameter_is_input(i) && parameter_is_control(i)) {
778 child = new XMLNode("Port");
779 snprintf(buf, sizeof(buf), "%u", i);
780 child->add_property("id", std::string(buf));
781 snprintf(buf, sizeof(buf), "%+f", _shadow_data[i]);
782 child->add_property("value", std::string(buf));
783 root->add_child_nocopy(*child);
789 LuaProc::set_script_from_state (const XMLNode& node)
792 if (node.name () != state_node_name ()) {
796 if ((child = node.child (X_("script"))) != 0) {
797 for (XMLNodeList::const_iterator n = child->children ().begin (); n != child->children ().end (); ++n) {
798 if (!(*n)->is_content ()) { continue; }
800 guchar* buf = g_base64_decode ((*n)->content ().c_str (), &size);
801 _script = std::string ((const char*)buf, size);
803 if (load_script ()) {
804 PBD::error << _("Failed to load Lua script from session state.") << endmsg;
806 std::cerr << "Failed Lua Script: " << _script << std::endl;
813 if (_script.empty ()) {
814 PBD::error << _("Session State for LuaProcessor did not include a Lua script.") << endmsg;
818 PBD::error << _("Invalid/incompatible Lua script found for LuaProcessor.") << endmsg;
825 LuaProc::set_state (const XMLNode& node, int version)
827 #ifndef NO_PLUGIN_STATE
829 XMLProperty const * prop;
830 XMLNodeConstIterator iter;
838 if (_script.empty ()) {
839 if (set_script_from_state (node)) {
844 #ifndef NO_PLUGIN_STATE
845 if (node.name() != state_node_name()) {
846 error << _("Bad node sent to LuaProc::set_state") << endmsg;
850 nodes = node.children ("Port");
851 for (iter = nodes.begin(); iter != nodes.end(); ++iter) {
853 if ((prop = child->property("id")) != 0) {
854 port = prop->value().c_str();
856 warning << _("LuaProc: port has no symbol, ignored") << endmsg;
859 if ((prop = child->property("value")) != 0) {
860 value = prop->value().c_str();
862 warning << _("LuaProc: port has no value, ignored") << endmsg;
865 sscanf (port, "%" PRIu32, &port_id);
866 set_parameter (port_id, atof(value));
870 return Plugin::set_state (node, version);
874 LuaProc::parameter_count () const
876 return _ctrl_params.size ();
880 LuaProc::default_value (uint32_t port)
882 if (_ctrl_params[port].first) {
886 int lp = _ctrl_params[port].second;
887 return _param_desc[lp].normal;
891 LuaProc::set_parameter (uint32_t port, float val)
893 assert (port < parameter_count ());
894 if (get_parameter (port) == val) {
897 _shadow_data[port] = val;
898 Plugin::set_parameter (port, val);
902 LuaProc::get_parameter (uint32_t port) const
904 if (parameter_is_input (port)) {
905 return _shadow_data[port];
907 return _control_data[port];
912 LuaProc::get_parameter_descriptor (uint32_t port, ParameterDescriptor& desc) const
914 assert (port <= parameter_count ());
915 int lp = _ctrl_params[port].second;
916 const ParameterDescriptor& d (_param_desc.find(lp)->second);
918 desc.lower = d.lower;
919 desc.upper = d.upper;
920 desc.normal = d.normal;
921 desc.toggled = d.toggled;
922 desc.logarithmic = d.logarithmic;
923 desc.integer_step = d.integer_step;
924 desc.sr_dependent = d.sr_dependent;
925 desc.enumeration = d.enumeration;
927 desc.label = d.label;
928 desc.scale_points = d.scale_points;
930 desc.update_steps ();
935 LuaProc::get_parameter_docs (uint32_t port) const {
936 assert (port <= parameter_count ());
937 int lp = _ctrl_params[port].second;
938 return _param_doc.find(lp)->second;
942 LuaProc::nth_parameter (uint32_t port, bool& ok) const
944 if (port < _ctrl_params.size ()) {
953 LuaProc::parameter_is_input (uint32_t port) const
955 assert (port < _ctrl_params.size ());
956 return (!_ctrl_params[port].first);
960 LuaProc::parameter_is_output (uint32_t port) const
962 assert (port < _ctrl_params.size ());
963 return (_ctrl_params[port].first);
966 std::set<Evoral::Parameter>
967 LuaProc::automatable () const
969 std::set<Evoral::Parameter> automatables;
970 for (uint32_t i = 0; i < _ctrl_params.size (); ++i) {
971 if (parameter_is_input (i)) {
972 automatables.insert (automatables.end (), Evoral::Parameter (PluginAutomation, 0, i));
979 LuaProc::describe_parameter (Evoral::Parameter param)
981 if (param.type () == PluginAutomation && param.id () < parameter_count ()) {
982 int lp = _ctrl_params[param.id ()].second;
983 return _param_desc[lp].label;
989 LuaProc::print_parameter (uint32_t param, char* buf, uint32_t len) const
992 if (param < parameter_count ()) {
993 snprintf (buf, len, "%.3f", get_parameter (param));
1000 boost::shared_ptr<ScalePoints>
1001 LuaProc::parse_scale_points (luabridge::LuaRef* lr)
1003 if (!(*lr)["scalepoints"].isTable()) {
1004 return boost::shared_ptr<ScalePoints> ();
1008 boost::shared_ptr<ScalePoints> rv = boost::shared_ptr<ScalePoints>(new ScalePoints());
1009 luabridge::LuaRef scalepoints ((*lr)["scalepoints"]);
1011 for (luabridge::Iterator i (scalepoints); !i.isNil (); ++i) {
1012 if (!i.key ().isString ()) { continue; }
1013 if (!i.value ().isNumber ()) { continue; }
1014 rv->insert(make_pair(i.key ().cast<std::string> (),
1015 i.value ().cast<float> ()));
1019 if (rv->size() > 0) {
1022 return boost::shared_ptr<ScalePoints> ();
1025 boost::shared_ptr<ScalePoints>
1026 LuaProc::get_scale_points (uint32_t port) const
1028 int lp = _ctrl_params[port].second;
1029 return _param_desc.find(lp)->second.scale_points;
1033 LuaProc::setup_lua_inline_gui (LuaState *lua_gui)
1035 lua_State* LG = lua_gui->getState ();
1036 LuaBindings::stddef (LG);
1037 LuaBindings::common (LG);
1038 LuaBindings::dsp (LG);
1040 lua_gui->Print.connect (sigc::mem_fun (*this, &LuaProc::lua_print));
1041 lua_gui->do_command ("function ardour () end");
1042 lua_gui->do_command (_script);
1044 // TODO think: use a weak-pointer here ?
1045 // (the GUI itself uses a shared ptr to this plugin, so we should be good)
1046 luabridge::getGlobalNamespace (LG)
1047 .beginNamespace ("Ardour")
1048 .beginClass <LuaProc> ("LuaProc")
1049 .addFunction ("shmem", &LuaProc::instance_shm)
1050 .addFunction ("table", &LuaProc::instance_ref)
1054 luabridge::push <LuaProc *> (LG, this);
1055 lua_setglobal (LG, "self");
1057 luabridge::push <float *> (LG, _shadow_data);
1058 lua_setglobal (LG, "CtrlPorts");
1060 ////////////////////////////////////////////////////////////////////////////////
1062 #include "ardour/search_paths.h"
1066 LuaProc::preset_name_to_uri (const std::string& name) const
1068 std::string uri ("urn:lua:");
1072 sha1_write (&s, (const uint8_t *) name.c_str(), name.size ());
1073 sha1_write (&s, (const uint8_t *) _script.c_str(), _script.size ());
1074 sha1_result_hash (&s, hash);
1079 LuaProc::presets_file () const
1081 return string_compose ("lua-%1", _info->unique_id);
1085 LuaProc::presets_tree () const
1087 XMLTree* t = new XMLTree;
1088 std::string p = Glib::build_filename (ARDOUR::user_config_directory (), "presets");
1090 if (!Glib::file_test (p, Glib::FILE_TEST_IS_DIR)) {
1091 if (g_mkdir_with_parents (p.c_str(), 0755) != 0) {
1092 error << _("Unable to create LuaProc presets directory") << endmsg;
1096 p = Glib::build_filename (p, presets_file ());
1098 if (!Glib::file_test (p, Glib::FILE_TEST_EXISTS)) {
1099 t->set_root (new XMLNode (X_("LuaPresets")));
1103 t->set_filename (p);
1112 LuaProc::load_preset (PresetRecord r)
1114 boost::shared_ptr<XMLTree> t (presets_tree ());
1119 XMLNode* root = t->root ();
1120 for (XMLNodeList::const_iterator i = root->children().begin(); i != root->children().end(); ++i) {
1121 XMLProperty const * label = (*i)->property (X_("label"));
1123 if (label->value() != r.label) {
1127 for (XMLNodeList::const_iterator j = (*i)->children().begin(); j != (*i)->children().end(); ++j) {
1128 if ((*j)->name() == X_("Parameter")) {
1129 XMLProperty const * index = (*j)->property (X_("index"));
1130 XMLProperty const * value = (*j)->property (X_("value"));
1134 set_parameter (atoi (index->value().c_str()), atof (value->value().c_str ()));
1137 return Plugin::load_preset(r);
1143 LuaProc::do_save_preset (std::string name) {
1145 boost::shared_ptr<XMLTree> t (presets_tree ());
1150 std::string uri (preset_name_to_uri (name));
1152 XMLNode* p = new XMLNode (X_("Preset"));
1153 p->add_property (X_("uri"), uri);
1154 p->add_property (X_("label"), name);
1156 for (uint32_t i = 0; i < parameter_count(); ++i) {
1157 if (parameter_is_input (i)) {
1158 XMLNode* c = new XMLNode (X_("Parameter"));
1159 c->add_property (X_("index"), string_compose ("%1", i));
1160 c->add_property (X_("value"), string_compose ("%1", get_parameter (i)));
1161 p->add_child_nocopy (*c);
1164 t->root()->add_child_nocopy (*p);
1166 std::string f = Glib::build_filename (ARDOUR::user_config_directory (), "presets");
1167 f = Glib::build_filename (f, presets_file ());
1174 LuaProc::do_remove_preset (std::string name)
1176 boost::shared_ptr<XMLTree> t (presets_tree ());
1180 t->root()->remove_nodes_and_delete (X_("label"), name);
1181 std::string f = Glib::build_filename (ARDOUR::user_config_directory (), "presets");
1182 f = Glib::build_filename (f, presets_file ());
1187 LuaProc::find_presets ()
1189 boost::shared_ptr<XMLTree> t (presets_tree ());
1191 XMLNode* root = t->root ();
1192 for (XMLNodeList::const_iterator i = root->children().begin(); i != root->children().end(); ++i) {
1194 XMLProperty const * uri = (*i)->property (X_("uri"));
1195 XMLProperty const * label = (*i)->property (X_("label"));
1200 PresetRecord r (uri->value(), label->value(), true);
1201 _presets.insert (make_pair (r.uri, r));
1206 ////////////////////////////////////////////////////////////////////////////////
1208 LuaPluginInfo::LuaPluginInfo (LuaScriptInfoPtr lsi) {
1209 if (lsi->type != LuaScriptInfo::DSP) {
1210 throw failed_constructor ();
1215 creator = lsi->author;
1216 category = lsi->category;
1217 unique_id = lsi->unique_id;
1219 n_inputs.set (DataType::AUDIO, 1);
1220 n_outputs.set (DataType::AUDIO, 1);
1223 _is_instrument = category == "Instrument";
1227 LuaPluginInfo::load (Session& session)
1229 std::string script = "";
1230 if (!Glib::file_test (path, Glib::FILE_TEST_EXISTS)) {
1231 return PluginPtr ();
1235 script = Glib::file_get_contents (path);
1236 } catch (Glib::FileError err) {
1237 return PluginPtr ();
1240 if (script.empty ()) {
1241 return PluginPtr ();
1245 PluginPtr plugin (new LuaProc (session.engine (), session, script));
1247 } catch (failed_constructor& err) {
1250 return PluginPtr ();
1253 std::vector<Plugin::PresetRecord>
1254 LuaPluginInfo::get_presets (bool /*user_only*/) const
1256 std::vector<Plugin::PresetRecord> p;
1257 XMLTree* t = new XMLTree;
1258 std::string pf = Glib::build_filename (ARDOUR::user_config_directory (), "presets", string_compose ("lua-%1", unique_id));
1259 if (Glib::file_test (pf, Glib::FILE_TEST_EXISTS)) {
1260 t->set_filename (pf);
1262 XMLNode* root = t->root ();
1263 for (XMLNodeList::const_iterator i = root->children().begin(); i != root->children().end(); ++i) {
1264 XMLProperty const * uri = (*i)->property (X_("uri"));
1265 XMLProperty const * label = (*i)->property (X_("label"));
1266 p.push_back (Plugin::PresetRecord (uri->value(), label->value(), true));