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Add a convenience API to modulate plugin parameters from Lua

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This commit is contained in:
Robin Gareus 2017-02-26 04:22:16 +01:00
parent 998d8c150b
commit b8bfa55864
3 changed files with 100 additions and 1 deletions
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10
libs/ardour/ardour/lua_api.h
View file

@ -300,7 +300,15 @@ namespace ARDOUR { namespace LuaAPI {
boost::shared_ptr<Evoral::Note<Evoral::Beats> >
new_noteptr (uint8_t, Evoral::Beats, Evoral::Beats, uint8_t, uint8_t);
} } /* namespace */
double control_baseline (const Evoral::ControlSet::Controls& ctrlmap, uint32_t port);
double control_modulation_delta (const Evoral::ControlSet::Controls& ctrlmap, uint32_t port);
double control_modulated_value (const Evoral::ControlSet::Controls& ctrlmap, uint32_t port);
bool modulate_to (const Evoral::ControlSet::Controls& ctrlmap, uint32_t port, double value);
bool modulate_by (const Evoral::ControlSet::Controls& ctrlmap, uint32_t port, double value);
bool modulate_range (const Evoral::ControlSet::Controls& ctrlmap, uint32_t port, double value);
} } /* namespace ARDOUR::LuaAPI */
namespace ARDOUR { namespace LuaOSC {
/** OSC transmitter

80
libs/ardour/lua_api.cc
View file

@ -820,3 +820,83 @@ LuaAPI::new_noteptr (uint8_t chan, Evoral::Beats beat_time, Evoral::Beats length
{
return boost::shared_ptr<Evoral::Note<Evoral::Beats> > (new Evoral::Note<Evoral::Beats>(chan, beat_time, length, note, velocity));
}
/* modulation related */
static boost::shared_ptr<PluginInsert::PluginControl>
_lookup_plugin_control (const Evoral::ControlSet::Controls& ctrlmap, uint32_t port)
{
Evoral::Parameter p (AutomationType::PluginAutomation, 0, port);
Evoral::ControlSet::Controls::const_iterator i = ctrlmap.find (p);
if (i == ctrlmap.end()) {
return boost::shared_ptr<PluginInsert::PluginControl> ();
}
boost::shared_ptr<PluginInsert::PluginControl> c = boost::dynamic_pointer_cast<PluginInsert::PluginControl> (i->second);
return c;
}
bool
LuaAPI::modulate_to (const Evoral::ControlSet::Controls& ctrlmap, uint32_t port, double value)
{
boost::shared_ptr<PluginInsert::PluginControl> c = _lookup_plugin_control (ctrlmap, port);
if (!c) {
return false;
}
value = std::min (c->upper(), std::max (c->lower(), value));
c->modulate_to (value);
return true;
}
bool
LuaAPI::modulate_by (const Evoral::ControlSet::Controls& ctrlmap, uint32_t port, double value)
{
boost::shared_ptr<PluginInsert::PluginControl> c = _lookup_plugin_control (ctrlmap, port);
if (!c) {
return false;
}
c->modulate_by (value);
return true;
}
bool
LuaAPI::modulate_range (const Evoral::ControlSet::Controls& ctrlmap, uint32_t port, double value)
{
boost::shared_ptr<PluginInsert::PluginControl> c = _lookup_plugin_control (ctrlmap, port);
if (!c) {
return false;
}
// value -1 .. + 1, we should take the baseline into account
c->modulate_by (value * (c->upper() - c->lower()));
return true;
}
double
LuaAPI::control_baseline (const Evoral::ControlSet::Controls& ctrlmap, uint32_t port)
{
boost::shared_ptr<PluginInsert::PluginControl> c = _lookup_plugin_control (ctrlmap, port);
if (!c) {
return 0;
}
return c->get_value ();
}
double
LuaAPI::control_modulation_delta (const Evoral::ControlSet::Controls& ctrlmap, uint32_t port)
{
boost::shared_ptr<PluginInsert::PluginControl> c = _lookup_plugin_control (ctrlmap, port);
if (!c) {
return 0;
}
return c->modulation_delta ();
}
double
LuaAPI::control_modulated_value (const Evoral::ControlSet::Controls& ctrlmap, uint32_t port)
{
boost::shared_ptr<PluginInsert::PluginControl> c = _lookup_plugin_control (ctrlmap, port);
if (!c) {
return 0;
}
return c->modulated_value ();
}

11
libs/ardour/luabindings.cc
View file

@ -1969,6 +1969,17 @@ LuaBindings::common (lua_State* L)
.addCFunction ("sample_to_timecode", ARDOUR::LuaAPI::sample_to_timecode)
.addCFunction ("timecode_to_sample", ARDOUR::LuaAPI::timecode_to_sample)
// modulation
.addFunction ("control_baseline", ARDOUR::LuaAPI::control_baseline)
.addFunction ("control_modulation_delta", ARDOUR::LuaAPI::control_modulation_delta)
.addFunction ("control_modulated_value", ARDOUR::LuaAPI::control_modulated_value)
// modulation -- should be RT context, modulation scripts
.addFunction ("modulate_to", ARDOUR::LuaAPI::modulate_to)
.addFunction ("modulate_by", ARDOUR::LuaAPI::modulate_by)
.addFunction ("modulate_range", ARDOUR::LuaAPI::modulate_range)
// end RT only
.beginClass <ARDOUR::LuaAPI::Vamp> ("Vamp")
.addConstructor <void (*) (const std::string&, float)> ()
.addStaticFunction ("list_plugins", &ARDOUR::LuaAPI::Vamp::list_plugins)