ardour/livetrax
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Load LV2 presets using lilv state API to support presets with state.

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This commit is contained in:
David Robillard 2013-03-24 18:44:18 -04:00
parent 52363ebefd
commit adf40b97e0
1 changed files with 27 additions and 27 deletions
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54
libs/ardour/lv2_plugin.cc
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@ -962,38 +962,38 @@ LV2Plugin::find_presets()
lilv_node_free(lv2_appliesTo);
}
static void
set_port_value(const char* port_symbol,
void* user_data,
const void* value,
uint32_t /*size*/,
uint32_t type)
{
LV2Plugin* self = (LV2Plugin*)user_data;
if (type != 0 && type != self->_uri_map.uri_to_id(LV2_ATOM__Float)) {
return; // TODO: Support non-float ports
}
const uint32_t port_index = self->port_index(port_symbol);
if (port_index != (uint32_t)-1) {
self->set_parameter(port_index, *(const float*)value);
}
}
bool
LV2Plugin::load_preset(PresetRecord r)
{
std::map<std::string,uint32_t>::iterator it;
LilvWorld* world = _world.world;
LilvNode* pset = lilv_new_uri(world, r.uri.c_str());
LilvState* state = lilv_state_new_from_world(world, _uri_map.urid_map(), pset);
LilvNode* lv2_port = lilv_new_uri(_world.world, LILV_NS_LV2 "port");
LilvNode* lv2_symbol = lilv_new_uri(_world.world, LILV_NS_LV2 "symbol");
LilvNode* preset = lilv_new_uri(_world.world, r.uri.c_str());
LilvNode* pset_value = lilv_new_uri(_world.world, LV2_PRESETS__value);
LilvNodes* ports = lilv_world_find_nodes(_world.world, preset, lv2_port, NULL);
LILV_FOREACH(nodes, i, ports) {
const LilvNode* port = lilv_nodes_get(ports, i);
const LilvNode* symbol = get_value(_world.world, port, lv2_symbol);
const LilvNode* value = get_value(_world.world, port, pset_value);
if (value && lilv_node_is_float(value)) {
it = _port_indices.find(lilv_node_as_string(symbol));
if (it != _port_indices.end()) {
set_parameter(it->second,lilv_node_as_float(value));
}
}
if (state) {
lilv_state_restore(state, _impl->instance, set_port_value, this, 0, NULL);
lilv_state_free(state);
return true;
} else {
return false;
}
lilv_nodes_free(ports);
lilv_node_free(pset_value);
lilv_node_free(preset);
lilv_node_free(lv2_symbol);
lilv_node_free(lv2_port);
Plugin::load_preset(r);
return true;
}
const void*