LILV_API
LilvNodes*
lilv_ui_get_supported_features(const LilvUI* ui)
{
LilvNodes* optional = lilv_ui_get_optional_features(ui);
LilvNodes* required = lilv_ui_get_required_features(ui);
LilvNodes* result = lilv_nodes_new();
LILV_FOREACH(nodes, i, optional)
zix_tree_insert((ZixTree*)result,
lilv_node_duplicate(lilv_nodes_get(optional, i)),
NULL);
LILV_FOREACH(nodes, i, required)
zix_tree_insert((ZixTree*)result,
lilv_node_duplicate(lilv_nodes_get(required, i)),
NULL);
lilv_nodes_free(optional);
lilv_nodes_free(required);
return result;
}
URIs::Quark::Quark(const Quark& copy)
: Raul::URI(copy)
, urid(copy.urid)
, uri(copy.uri)
, lnode(lilv_node_duplicate(copy.lnode))
{}
LILV_API
LilvState*
lilv_state_new_from_instance(const LilvPlugin* plugin,
LilvInstance* instance,
LV2_URID_Map* map,
const char* file_dir,
const char* copy_dir,
const char* link_dir,
const char* save_dir,
LilvGetPortValueFunc get_value,
void* user_data,
uint32_t flags,
const LV2_Feature *const * features)
{
const LV2_Feature** sfeatures = NULL;
LilvWorld* const world = plugin->world;
LilvState* const state = (LilvState*)malloc(sizeof(LilvState));
memset(state, '\0', sizeof(LilvState));
state->plugin_uri = lilv_node_duplicate(lilv_plugin_get_uri(plugin));
state->abs2rel = zix_tree_new(false, abs_cmp, NULL, path_rel_free);
state->rel2abs = zix_tree_new(false, rel_cmp, NULL, NULL);
state->file_dir = file_dir ? absolute_dir(file_dir) : NULL;
state->copy_dir = copy_dir ? absolute_dir(copy_dir) : NULL;
state->link_dir = link_dir ? absolute_dir(link_dir) : NULL;
state->dir = save_dir ? absolute_dir(save_dir) : NULL;
state->atom_Path = map->map(map->handle, LV2_ATOM__Path);
LV2_State_Map_Path pmap = { state, abstract_path, absolute_path };
LV2_Feature pmap_feature = { LV2_STATE__mapPath, &pmap };
LV2_State_Make_Path pmake = { state, make_path };
LV2_Feature pmake_feature = { LV2_STATE__makePath, &pmake };
features = sfeatures = add_features(features, &pmap_feature,
save_dir ? &pmake_feature : NULL);
// Store port values
if (get_value) {
LilvNode* lv2_ControlPort = lilv_new_uri(world, LILV_URI_CONTROL_PORT);
LilvNode* lv2_InputPort = lilv_new_uri(world, LILV_URI_INPUT_PORT);
for (uint32_t i = 0; i < plugin->num_ports; ++i) {
const LilvPort* const port = plugin->ports[i];
if (lilv_port_is_a(plugin, port, lv2_ControlPort)
&& lilv_port_is_a(plugin, port, lv2_InputPort)) {
uint32_t size, type;
const char* sym = lilv_node_as_string(port->symbol);
const void* value = get_value(sym, user_data, &size, &type);
append_port_value(state, sym, value, size, type);
}
}
lilv_node_free(lv2_ControlPort);
lilv_node_free(lv2_InputPort);
}
// Store properties
const LV2_Descriptor* desc = instance->lv2_descriptor;
const LV2_State_Interface* iface = (desc->extension_data)
? (LV2_State_Interface*)desc->extension_data(LV2_STATE__interface)
: NULL;
if (iface) {
LV2_State_Status st = iface->save(
instance->lv2_handle, store_callback, state, flags, features);
if (st) {
LILV_ERRORF("Error saving plugin state: %s\n", state_strerror(st));
free(state->props);
state->props = NULL;
state->num_props = 0;
} else {
qsort(state->props, state->num_props, sizeof(Property), property_cmp);
}
}
qsort(state->values, state->num_values, sizeof(PortValue), value_cmp);
free(sfeatures);
return state;
}
Lv2Plugin *Lv2PluginCache::getPlugin(const char *uri, const char *preset, Lv2State *state) {
// create a unique key for uri/preset/state
std::string keyString(uri);
if(preset) {
keyString.append(":");
keyString.append(preset);
}
std::size_t hash = std::hash<std::string>()(keyString);
if(state) {
hash = hash ^ (state->getHash() << 1);
}
// count tells how many instances of this type of plugin
int count = ++instanceCount[hash];
// return cached plugin instance if available
int key = hash + count;
Lv2Plugin *cachedPlugin = findObject(key);
if(cachedPlugin) {
cachedPlugin->restore();
return cachedPlugin;
}
// look in cache for plugin type by uri
std::string uriString(uri);
const LilvPlugin *lilvPlugin = pluginMap[uriString];
if(!lilvPlugin) {
// find lv2 plugin in lilv
LilvNode *lilvUri = lilv_new_uri(world, uri);
lilvPlugin = lilv_plugins_get_by_uri(plugins, lilvUri);
lilv_node_free(lilvUri);
if(!lilvPlugin) {
throw std::logic_error(std::string("Plugin is not installed on this system: ") + uriString);
}
// check that required features are supported
LilvNodes* features = lilv_plugin_get_required_features(lilvPlugin);
for (LilvIter* f = lilv_nodes_begin(features); !lilv_nodes_is_end(features, f); f = lilv_nodes_next(features, f)) {
const char* featureUri = lilv_node_as_uri(lilv_nodes_get(features, f));
if(!supported[featureUri]) {
throw std::logic_error(std::string("Plugin ") + uriString + " requires unsupported feature: " + featureUri);
}
}
lilv_nodes_free(features);
pluginMap[uriString] = lilvPlugin;
}
// create worker if required
Lv2Worker *worker = 0;
if (lilv_plugin_has_feature(lilvPlugin, lv2Constants.lv2WorkerSchedule)
&& lilv_plugin_has_extension_data(lilvPlugin, lv2Constants.lv2WorkerInterface)) {
worker = new Lv2Worker();
((LV2_Worker_Schedule*)lv2Features[5]->data)->handle = worker;
}
// instantiate
LilvInstance *instance = lilv_plugin_instantiate(lilvPlugin, sampleRate, lv2Features);
// connect worker with plugin instance
if(worker) {
worker->setInstance(instance);
}
// create plugin object
Lv2Plugin *plugin = new Lv2Plugin(lilvPlugin, instance, lv2Constants, worker);
// restore baseline default state
LilvState *defaultState = lilv_state_new_from_world(world, &map, lilv_plugin_get_uri(lilvPlugin));
lilv_state_restore(defaultState, instance, setPortValue, plugin, 0, lv2Features);
// find and restore preset
if(preset) {
LilvNodes* presets = lilv_plugin_get_related(lilvPlugin, lv2Constants.lv2Presets);
LilvNode *myPreset = 0;
LILV_FOREACH(nodes, i, presets) {
const LilvNode* presetNode = lilv_nodes_get(presets, i);
lilv_world_load_resource(world, presetNode);
LilvNodes* labels = lilv_world_find_nodes(world, presetNode, lv2Constants.lv2RdfsLabel, NULL);
if (labels) {
const LilvNode* label = lilv_nodes_get_first(labels);
const char *labelString = lilv_node_as_string(label); // TODO: free?
if(!strcmp(labelString, preset)) {
myPreset = lilv_node_duplicate(presetNode);
}
lilv_nodes_free(labels);
}
}
lilv_nodes_free(presets);
if(myPreset) {
LilvState* presetState = lilv_state_new_from_world(world, &map, myPreset);
lilv_state_restore(presetState, instance, setPortValue, plugin, 0, NULL);
// lilv_state_free(state); // TODO
}
else {
throw std::logic_error(std::string("Plugin ") + uriString + " has no such preset: " + preset);
}
}
// restore state
else if(state) { // TODO: what if state is requested on a plugin that doesn't support?