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authorDavid Robillard <d@drobilla.net>2012-03-11 01:53:31 +0000
committerDavid Robillard <d@drobilla.net>2012-03-11 01:53:31 +0000
commitd88dc1da7ed999d56bc61d86fb20d75d45846912 (patch)
tree0baae1caceb9b40e0990b6e7d646977feca5d8cb /src/server/ingen_lv2.cpp
parent7bc5413b66cd60395af7f045b34b16685851b3dc (diff)
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Implement state save/restore when Ingen is an LV2 plugin.
git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@4047 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'src/server/ingen_lv2.cpp')
-rw-r--r--src/server/ingen_lv2.cpp112
1 files changed, 111 insertions, 1 deletions
diff --git a/src/server/ingen_lv2.cpp b/src/server/ingen_lv2.cpp
index 74bffd53..9275d555 100644
--- a/src/server/ingen_lv2.cpp
+++ b/src/server/ingen_lv2.cpp
@@ -27,10 +27,14 @@
#include <glibmm/timer.h>
#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
+#include "lv2/lv2plug.in/ns/ext/state/state.h"
+#include "lv2/lv2plug.in/ns/ext/urid/urid.h"
#include "ingen/ServerInterface.hpp"
#include "ingen/serialisation/Parser.hpp"
+#include "ingen/serialisation/Serialiser.hpp"
#include "ingen/shared/Configuration.hpp"
+#include "ingen/shared/Store.hpp"
#include "ingen/shared/World.hpp"
#include "ingen/shared/runtime_paths.hpp"
#include "raul/SharedPtr.hpp"
@@ -46,6 +50,8 @@
#include "ServerInterfaceImpl.hpp"
#include "ThreadManager.hpp"
+#define NS_INGEN "http://drobilla.net/ns/ingen#"
+
/** Record of a patch in this Ingen LV2 bundle */
struct LV2Patch {
LV2Patch(const std::string& u, const std::string& f);
@@ -245,6 +251,7 @@ private:
struct IngenPlugin {
Ingen::Shared::World* world;
MainThread* main;
+ LV2_URID_Map* map;
};
static LV2_Handle
@@ -275,6 +282,13 @@ ingen_instantiate(const LV2_Descriptor* descriptor,
return NULL;
}
+ plugin->map = NULL;
+ for (int i = 0; features[i]; ++i) {
+ if (!strcmp(features[i]->URI, LV2_URID_URI "#map")) {
+ plugin->map = (LV2_URID_Map*)features[i]->data;
+ }
+ }
+
SharedPtr<Server::Engine> engine(new Server::Engine(plugin->world));
plugin->world->set_local_engine(engine);
plugin->main = new MainThread(engine);
@@ -373,9 +387,105 @@ ingen_cleanup(LV2_Handle instance)
free(instance);
}
-static const void*
+static void
+get_state_features(const LV2_Feature* const* features,
+ LV2_State_Map_Path** map,
+ LV2_State_Make_Path** make)
+{
+ for (int i = 0; features[i]; ++i) {
+ if (map && !strcmp(features[i]->URI, LV2_STATE__mapPath)) {
+ *map = (LV2_State_Map_Path*)features[i]->data;
+ } else if (make && !strcmp(features[i]->URI, LV2_STATE__makePath)) {
+ *make = (LV2_State_Make_Path*)features[i]->data;
+ }
+ }
+}
+
+static void
+ingen_save(LV2_Handle instance,
+ LV2_State_Store_Function store,
+ LV2_State_Handle handle,
+ uint32_t flags,
+ const LV2_Feature* const* features)
+{
+ IngenPlugin* plugin = (IngenPlugin*)instance;
+
+ LV2_State_Map_Path* map_path = NULL;
+ LV2_State_Make_Path* make_path = NULL;
+ get_state_features(features, &map_path, &make_path);
+ if (!map_path || !make_path || !plugin->map) {
+ Raul::error << "Missing state:mapPath, state:makePath, or urid:Map."
+ << endl;
+ return;
+ }
+
+ LV2_URID ingen_file = plugin->map->map(plugin->map->handle, NS_INGEN "file");
+ LV2_URID atom_Path = plugin->map->map(plugin->map->handle,
+ "http://lv2plug.in/ns/ext/atom#Path");
+
+ char* real_path = make_path->path(make_path->handle, "patch.ttl");
+ char* state_path = map_path->abstract_path(map_path->handle, real_path);
+
+ Ingen::Shared::Store::iterator root = plugin->world->store()->find("/");
+ plugin->world->serialiser()->to_file(root->second, real_path);
+
+ store(handle,
+ ingen_file,
+ state_path,
+ strlen(state_path) + 1,
+ atom_Path,
+ LV2_STATE_IS_POD);
+
+ free(state_path);
+ free(real_path);
+}
+
+static void
+ingen_restore(LV2_Handle instance,
+ LV2_State_Retrieve_Function retrieve,
+ LV2_State_Handle handle,
+ uint32_t flags,
+ const LV2_Feature* const* features)
+{
+ IngenPlugin* plugin = (IngenPlugin*)instance;
+
+ LV2_State_Map_Path* map_path = NULL;
+ get_state_features(features, &map_path, NULL);
+ if (!map_path) {
+ Raul::error << "Missing state:mapPath" << endl;
+ return;
+ }
+
+ LV2_URID ingen_file = plugin->map->map(plugin->map->handle, NS_INGEN "file");
+ size_t size;
+ uint32_t type;
+ uint32_t valflags;
+
+ const void* path = retrieve(handle,
+ ingen_file,
+ &size, &type, &valflags);
+
+ if (!path) {
+ Raul::error << "Failed to restore ingen:file" << endl;
+ return;
+ }
+
+ const char* state_path = (const char*)path;
+ char* real_path = map_path->absolute_path(map_path->handle, state_path);
+
+ plugin->world->parser()->parse_file(plugin->world,
+ plugin->world->engine().get(),
+ real_path);
+ free(real_path);
+}
+
+const void*
ingen_extension_data(const char* uri)
{
+ static const LV2_State_Interface state = { ingen_save, ingen_restore };
+ if (!strcmp(uri, LV2_STATE__Interface)) {
+ return &state;
+ }
return NULL;
}