diff options
Diffstat (limited to 'libs/ardour/lv2_plugin.cc')
| -rw-r--r-- | libs/ardour/lv2_plugin.cc | 49 |
1 files changed, 46 insertions, 3 deletions
diff --git a/libs/ardour/lv2_plugin.cc b/libs/ardour/lv2_plugin.cc index b6349d012f..0bee37d2be 100644 --- a/libs/ardour/lv2_plugin.cc +++ b/libs/ardour/lv2_plugin.cc @@ -25,6 +25,8 @@ #include <cmath> #include <cstring> +#include <glibmm.h> + #include "pbd/compose.h" #include "pbd/error.h" #include "pbd/pathscanner.h" @@ -42,6 +44,8 @@ #include "i18n.h" #include <locale.h> +#include "lv2ext/lv2_persist.h" + using namespace std; using namespace ARDOUR; using namespace PBD; @@ -83,14 +87,21 @@ LV2Plugin::init (LV2World& world, SLV2Plugin plugin, nframes_t rate) _latency_control_port = 0; _was_activated = false; + SLV2Value persist_uri = slv2_value_new_uri(_world.world, "http://lv2plug.in/ns/ext/persist"); + _supports_persist = slv2_plugin_has_feature(plugin, persist_uri); + slv2_value_free(persist_uri); + _instance_access_feature.URI = "http://lv2plug.in/ns/ext/instance-access"; _data_access_feature.URI = "http://lv2plug.in/ns/ext/data-access"; + _persist_feature.URI = "http://lv2plug.in/ns/ext/persist"; + _persist_feature.data = NULL; - _features = (LV2_Feature**)malloc(sizeof(LV2_Feature*) * 4); + _features = (LV2_Feature**)malloc(sizeof(LV2_Feature*) * 5); _features[0] = &_instance_access_feature; _features[1] = &_data_access_feature; - _features[2] = _uri_map.feature(); - _features[3] = NULL; + _features[2] = &_persist_feature; + _features[3] = _uri_map.feature(); + _features[4] = NULL; _instance = slv2_plugin_instantiate(plugin, rate, _features); _name = slv2_plugin_get_name(plugin); @@ -271,6 +282,19 @@ LV2Plugin::nth_parameter (uint32_t n, bool& ok) const return 0; } +struct LV2Value { void* value; uint32_t type; }; +typedef std::map< std::string, LV2Value > LV2State; + +static void +lv2_persist_store_callback(void* callback_data, + const char* key, + const void* value, + size_t size, + uint32_t type) +{ + cout << "LV2 PERSIST STORE " << key << " = " << value << " :: " << type << endl; +} + XMLNode& LV2Plugin::get_state() { @@ -296,6 +320,25 @@ LV2Plugin::get_state() } } + if (_supports_persist) { + // Create state directory for this plugin instance + const std::string state_path = Glib::build_filename(_session.plugins_dir(), _id.to_s()); + cout << "LV2 plugin state path " << state_path << endl; + + // Get LV2 Persist extension data from plugin instance + LV2_Persist* persist = (LV2_Persist*)slv2_instance_get_extension_data( + _instance, "http://lv2plug.in/ns/ext/persist"); + if (!persist) { + warning << string_compose( + _("Plugin \"%1\% failed to return LV2 persist data"), + unique_id()); + return *root; // FIXME: Possibly inconsistent state + } + + LV2State state; + persist->save(_instance, lv2_persist_store_callback, &state); + } + return *root; } |