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Support for the LV2 'data access' and 'instance access' extensions (for in-process GUIs).

Browse source 
git-svn-id: svn://localhost/ardour2/branches/2.0-ongoing@3684 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
David Robillard 2008-08-12 01:13:26 +00:00
parent a9e00793fe
commit 30a4ba74b2
3 changed files with 28 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

2
gtk2_ardour/lv2_plugin_ui.cc
View file

@ -57,7 +57,7 @@ LV2PluginUI::LV2PluginUI (boost::shared_ptr<PluginInsert> pi, boost::shared_ptr<
{
_inst = slv2_ui_instantiate(
_lv2->slv2_plugin(), _lv2->slv2_ui(), LV2PluginUI::lv2_ui_write, this,
/* FEATURES */ NULL);
_lv2->features());
GtkWidget* c_widget = (GtkWidget*)slv2_ui_instance_get_widget(_inst);
_gui_widget = Glib::wrap(c_widget);

10
libs/ardour/ardour/lv2_plugin.h
View file

@ -60,10 +60,14 @@ class LV2Plugin : public ARDOUR::Plugin
int get_parameter_descriptor (uint32_t which, ParameterDescriptor&) const;
uint32_t nth_parameter (uint32_t port, bool& ok) const;
const void* extension_data(const char* uri) { return _instance->lv2_descriptor->extension_data(uri); }
SLV2Plugin slv2_plugin() { return _plugin; }
SLV2UI slv2_ui() { return _ui; }
SLV2Port slv2_port(uint32_t i) { return slv2_plugin_get_port_by_index(_plugin, i); }
const LV2_Feature* const* features() { return _features; }
std::set<uint32_t> automatable() const;
void activate () {
@ -109,6 +113,7 @@ class LV2Plugin : public ARDOUR::Plugin
private:
void* _module;
LV2World& _world;
LV2_Feature** _features;
SLV2Plugin _plugin;
SLV2UI _ui;
SLV2Value _name;
@ -122,6 +127,11 @@ class LV2Plugin : public ARDOUR::Plugin
bool _was_activated;
vector<bool> _port_is_input;
typedef struct { const void* (*extension_data)(const char* uri); } LV2_DataAccess;
LV2_DataAccess _data_access_extension_data;
LV2_Feature _data_access_feature;
LV2_Feature _instance_access_feature;
void init (LV2World& world, SLV2Plugin plugin, nframes_t rate);
void run (nframes_t nsamples);
void latency_compute_run ();

20
libs/ardour/lv2_plugin.cc
View file

@ -43,10 +43,11 @@
using namespace std;
using namespace ARDOUR;
using namespace PBD;
LV2Plugin::LV2Plugin (AudioEngine& e, Session& session, LV2World& world, SLV2Plugin plugin, nframes_t rate)
: Plugin (e, session)
, _world(world)
, _features(NULL)
{
init (world, plugin, rate);
}
@ -54,6 +55,7 @@ LV2Plugin::LV2Plugin (AudioEngine& e, Session& session, LV2World& world, SLV2Plu
LV2Plugin::LV2Plugin (const LV2Plugin &other)
: Plugin (other)
, _world(other._world)
, _features(NULL)
{
init (other._world, other._plugin, other._sample_rate);
@ -73,8 +75,8 @@ LV2Plugin::init (LV2World& world, SLV2Plugin plugin, nframes_t rate)
_shadow_data = 0;
_latency_control_port = 0;
_was_activated = false;
_instance = slv2_plugin_instantiate(plugin, rate, NULL);
_instance = slv2_plugin_instantiate(plugin, rate, _features);
_name = slv2_plugin_get_name(plugin);
assert(_name);
_author = slv2_plugin_get_author_name(plugin);
@ -91,6 +93,18 @@ LV2Plugin::init (LV2World& world, SLV2Plugin plugin, nframes_t rate)
slv2_value_free(_author);
throw failed_constructor();
}
_instance_access_feature.URI = "http://lv2plug.in/ns/ext/instance-access";
_instance_access_feature.data = (void*)_instance->lv2_handle;
_data_access_extension_data.extension_data = _instance->lv2_descriptor->extension_data;
_data_access_feature.URI = "http://lv2plug.in/ns/ext/data-access";
_data_access_feature.data = &_data_access_extension_data;
_features = (LV2_Feature**)malloc(sizeof(LV2_Feature*) * 3);
_features[0] = &_instance_access_feature;
_features[1] = &_data_access_feature;
_features[2] = NULL;
_sample_rate = rate;