#include "pbd/error.h"
#include "pbd/event_loop.h"
#include "pbd/rcu.h"
+#include "pbd/reallocpool.h"
#include "pbd/statefuldestructible.h"
#include "pbd/signals.h"
#include "pbd/undo.h"
+#include "lua/luastate.h"
+
#include "evoral/types.hpp"
#include "midi++/types.h"
#include "ardour/chan_count.h"
#include "ardour/delivery.h"
#include "ardour/interthread_info.h"
+#include "ardour/luascripting.h"
#include "ardour/location.h"
#include "ardour/monitor_processor.h"
#include "ardour/rc_configuration.h"
class ControllableDescriptor;
}
+namespace luabridge {
+ class LuaRef;
+}
+
namespace Evoral {
class Curve;
}
PBD::Signal1<void,bool> AuditionActive;
+ /* session script */
+ void register_lua_function (const std::string&, const std::string&, const LuaScriptParamList&);
+ void unregister_lua_function (const std::string& name);
+ std::vector<std::string> registered_lua_functions ();
+ uint32_t registered_lua_function_count () const { return _n_lua_scripts; }
+ void scripts_changed (); // called from lua, updates _n_lua_scripts
+
/* flattening stuff */
boost::shared_ptr<Region> write_one_track (Track&, framepos_t start, framepos_t end,
bool pending_abort;
bool pending_auto_loop;
+ PBD::ReallocPool _mempool;
+ LuaState lua;
+ Glib::Threads::Mutex lua_lock;
+ luabridge::LuaRef * _lua_run;
+ luabridge::LuaRef * _lua_add;
+ luabridge::LuaRef * _lua_del;
+ luabridge::LuaRef * _lua_list;
+ luabridge::LuaRef * _lua_load;
+ luabridge::LuaRef * _lua_save;
+ luabridge::LuaRef * _lua_cleanup;
+ uint32_t _n_lua_scripts;
+
+ void setup_lua ();
+ void try_run_lua (pframes_t);
+
Butler* _butler;
static const PostTransportWork ProcessCannotProceedMask =
#include "ardour/filename_extensions.h"
#include "ardour/gain_control.h"
#include "ardour/graph.h"
+#include "ardour/luabindings.h"
#include "ardour/midiport_manager.h"
#include "ardour/scene_changer.h"
#include "ardour/midi_patch_manager.h"
#include "midi++/port.h"
#include "midi++/mmc.h"
+#include "LuaBridge/LuaBridge.h"
+
#include "i18n.h"
#include <glibmm/checksum.h>
, pending_locate_flush (false)
, pending_abort (false)
, pending_auto_loop (false)
+ , _mempool ("Session", 1048576)
+ , lua (lua_newstate (&PBD::ReallocPool::lalloc, &_mempool))
, _butler (new Butler (*this))
, _post_transport_work (0)
, cumulative_rf_motion (0)
pre_engine_init (fullpath);
+ setup_lua ();
+
if (_is_new) {
Stateful::loading_state_version = CURRENT_SESSION_FILE_VERSION;
delete state_tree;
state_tree = 0;
- /* reset dynamic state version back to default */
+ // unregister all lua functions, drop held references (if any)
+ (*_lua_cleanup)();
+ lua.do_command ("Session = nil");
+ delete _lua_run;
+ delete _lua_add;
+ delete _lua_del;
+ delete _lua_list;
+ delete _lua_save;
+ delete _lua_load;
+ delete _lua_cleanup;
+ lua.collect_garbage ();
+ /* reset dynamic state version back to default */
Stateful::loading_state_version = 0;
_butler->drop_references ();
queue_event (ev);
}
+
+void
+Session::register_lua_function (
+ const std::string& name,
+ const std::string& script,
+ const LuaScriptParamList& args
+ )
+{
+ Glib::Threads::Mutex::Lock lm (lua_lock);
+
+ lua_State* L = lua.getState();
+
+ const std::string& bytecode = LuaScripting::get_factory_bytecode (script);
+ luabridge::LuaRef tbl_arg (luabridge::newTable(L));
+ for (LuaScriptParamList::const_iterator i = args.begin(); i != args.end(); ++i) {
+ if ((*i)->optional && !(*i)->is_set) { continue; }
+ tbl_arg[(*i)->name] = (*i)->value;
+ }
+ (*_lua_add)(name, bytecode, tbl_arg); // throws luabridge::LuaException
+ set_dirty();
+}
+
+void
+Session::unregister_lua_function (const std::string& name)
+{
+ Glib::Threads::Mutex::Lock lm (lua_lock);
+ (*_lua_del)(name); // throws luabridge::LuaException
+ lua.collect_garbage ();
+ set_dirty();
+}
+
+std::vector<std::string>
+Session::registered_lua_functions ()
+{
+ Glib::Threads::Mutex::Lock lm (lua_lock);
+ std::vector<std::string> rv;
+
+ try {
+ luabridge::LuaRef list ((*_lua_list)());
+ for (luabridge::Iterator i (list); !i.isNil (); ++i) {
+ if (!i.key ().isString ()) { assert(0); continue; }
+ rv.push_back (i.key ().cast<std::string> ());
+ }
+ } catch (luabridge::LuaException const& e) { }
+ return rv;
+}
+
+#ifndef NDEBUG
+static void _lua_print (std::string s) {
+ std::cout << "SessionLua: " << s << "\n";
+}
+#endif
+
+void
+Session::try_run_lua (pframes_t nframes)
+{
+ if (_n_lua_scripts == 0) return;
+ Glib::Threads::Mutex::Lock tm (lua_lock, Glib::Threads::TRY_LOCK);
+ if (tm.locked ()) {
+ try { (*_lua_run)(nframes); } catch (luabridge::LuaException const& e) { }
+ }
+}
+
+void
+Session::setup_lua ()
+{
+#ifndef NDEBUG
+ lua.Print.connect (&_lua_print);
+#endif
+ lua.do_command (
+ "function ArdourSession ()"
+ " local self = { scripts = {}, instances = {} }"
+ ""
+ " local remove = function (n)"
+ " self.scripts[n] = nil"
+ " self.instances[n] = nil"
+ " Session:scripts_changed()" // call back
+ " end"
+ ""
+ " local addinternal = function (n, f, a)"
+ " assert(type(n) == 'string', 'function-name must be string')"
+ " assert(type(f) == 'function', 'Given script is a not a function')"
+ " assert(type(a) == 'table' or type(a) == 'nil', 'Given argument is invalid')"
+ " assert(self.scripts[n] == nil, 'Callback \"'.. n ..'\" already exists.')"
+ " self.scripts[n] = { ['f'] = f, ['a'] = a }"
+ " local env = _ENV; env.f = nil env.io = nil env.os = nil env.loadfile = nil env.require = nil env.dofile = nil env.package = nil env.debug = nil"
+ " local env = { print = print, Session = Session, tostring = tostring, assert = assert, ipairs = ipairs, error = error, select = select, string = string, type = type, tonumber = tonumber, collectgarbage = collectgarbage, pairs = pairs, math = math, table = table, pcall = pcall }"
+ " self.instances[n] = load (string.dump(f, true), nil, nil, env)(a)"
+ " Session:scripts_changed()" // call back
+ " end"
+ ""
+ " local add = function (n, b, a)"
+ " assert(type(b) == 'string', 'ByteCode must be string')"
+ " load (b)()" // assigns f
+ " assert(type(f) == 'string', 'Assigned ByteCode must be string')"
+ " addinternal (n, load(f), a)"
+ " end"
+ ""
+ " local run = function (...)"
+ " for n, s in pairs (self.instances) do"
+ " local status, err = pcall (s, ...)"
+ " if not status then"
+ " print ('fn \"'.. n .. '\": ', err)"
+ " remove (n)"
+ " end"
+ " end"
+ " collectgarbage()"
+ " end"
+ ""
+ " local cleanup = function ()"
+ " self.scripts = nil"
+ " self.instances = nil"
+ " end"
+ ""
+ " local list = function ()"
+ " local rv = {}"
+ " for n, _ in pairs (self.scripts) do"
+ " rv[n] = true"
+ " end"
+ " return rv"
+ " end"
+ ""
+ " local function basic_serialize (o)"
+ " if type(o) == \"number\" then"
+ " return tostring(o)"
+ " else"
+ " return string.format(\"%q\", o)"
+ " end"
+ " end"
+ ""
+ " local function serialize (name, value)"
+ " local rv = name .. ' = '"
+ " collectgarbage()"
+ " if type(value) == \"number\" or type(value) == \"string\" or type(value) == \"nil\" then"
+ " return rv .. basic_serialize(value) .. ' '"
+ " elseif type(value) == \"table\" then"
+ " rv = rv .. '{} '"
+ " for k,v in pairs(value) do"
+ " local fieldname = string.format(\"%s[%s]\", name, basic_serialize(k))"
+ " rv = rv .. serialize(fieldname, v) .. ' '"
+ " collectgarbage()" // string concatenation allocates a new string :(
+ " end"
+ " return rv;"
+ " elseif type(value) == \"function\" then"
+ " return rv .. string.format(\"%q\", string.dump(value, true))"
+ " else"
+ " error('cannot save a ' .. type(value))"
+ " end"
+ " end"
+ ""
+ ""
+ " local save = function ()"
+ " return (serialize('scripts', self.scripts))"
+ " end"
+ ""
+ " local restore = function (state)"
+ " self.scripts = {}"
+ " load (state)()"
+ " for n, s in pairs (scripts) do"
+ " addinternal (n, load(s['f']), s['a'])"
+ " end"
+ " end"
+ ""
+ " return { run = run, add = add, remove = remove,"
+ " list = list, restore = restore, save = save, cleanup = cleanup}"
+ " end"
+ " "
+ " sess = ArdourSession ()"
+ " ArdourSession = nil"
+ " "
+ "function ardour () end"
+ );
+
+ lua_State* L = lua.getState();
+
+ try {
+ luabridge::LuaRef lua_sess = luabridge::getGlobal (L, "sess");
+ lua.do_command ("sess = nil"); // hide it.
+ lua.do_command ("collectgarbage()");
+
+ _lua_run = new luabridge::LuaRef(lua_sess["run"]);
+ _lua_add = new luabridge::LuaRef(lua_sess["add"]);
+ _lua_del = new luabridge::LuaRef(lua_sess["remove"]);
+ _lua_list = new luabridge::LuaRef(lua_sess["list"]);
+ _lua_save = new luabridge::LuaRef(lua_sess["save"]);
+ _lua_load = new luabridge::LuaRef(lua_sess["restore"]);
+ _lua_cleanup = new luabridge::LuaRef(lua_sess["cleanup"]);
+ } catch (luabridge::LuaException const& e) {
+ fatal << string_compose (_("programming error: %1"),
+ X_("Failed to setup Lua interpreter"))
+ << endmsg;
+ abort(); /*NOTREACHED*/
+ }
+
+ LuaBindings::stddef (L);
+ LuaBindings::common (L);
+ LuaBindings::dsp (L);
+ luabridge::push <Session *> (L, this);
+ lua_setglobal (L, "Session");
+}
+
+void
+Session::scripts_changed ()
+{
+ assert (!lua_lock.trylock()); // must hold lua_lock
+
+ try {
+ luabridge::LuaRef list ((*_lua_list)());
+ int cnt = 0;
+ for (luabridge::Iterator i (list); !i.isNil (); ++i) {
+ if (!i.key ().isString ()) { assert(0); continue; }
+ ++cnt;
+ }
+ _n_lua_scripts = cnt;
+ } catch (luabridge::LuaException const& e) {
+ fatal << string_compose (_("programming error: %1"),
+ X_("Indexing Lua Session Scripts failed."))
+ << endmsg;
+ abort(); /*NOTREACHED*/
+ }
+}
+
void
Session::non_realtime_set_audition ()
{
projects / ardour.git / commitdiff