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2nd half of patch for handling LV2 presets from colinf (#4698)

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git-svn-id: svn://localhost/ardour2/branches/3.0@12786 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Paul Davis 2012-06-19 15:59:50 +00:00
parent 34321110dd
commit 7a24e49fa0
2 changed files with 96 additions and 6 deletions
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12
libs/ardour/ardour/lv2_plugin.h
View File

@ -31,6 +31,13 @@
namespace ARDOUR {
// a callback function for lilv_state_new_from_instance(). friend of LV2Plugin
// so we can pass an LV2Plugin* in user_data and access its private members.
const void* lv2plugin_get_port_value(const char* port_symbol,
void* user_data,
uint32_t* size,
uint32_t* type);
class AudioEngine;
class Session;
@ -159,6 +166,11 @@ class LV2Plugin : public ARDOUR::Plugin, public ARDOUR::Workee
float* _latency_control_port; ///< Special output set by ardour
PBD::ID _insert_id;
friend const void* lv2plugin_get_port_value(const char* port_symbol,
void* user_data,
uint32_t* size,
uint32_t* type);
typedef enum {
PORT_INPUT = 1,
PORT_OUTPUT = 1 << 1,

90
libs/ardour/lv2_plugin.cc
View File

@ -835,7 +835,6 @@ LV2Plugin::find_presets()
bool
LV2Plugin::load_preset(PresetRecord r)
{
Plugin::load_preset(r);
std::map<std::string,uint32_t>::iterator it;
@ -862,18 +861,97 @@ LV2Plugin::load_preset(PresetRecord r)
lilv_node_free(lv2_symbol);
lilv_node_free(lv2_port);
Plugin::load_preset(r);
return true;
}
std::string
LV2Plugin::do_save_preset(string /*name*/)
const void*
ARDOUR::lv2plugin_get_port_value(const char* port_symbol,
void* user_data,
uint32_t* size,
uint32_t* type)
{
return "";
// cerr << "get_port_value(" << port_symbol << ", ...) ... ";
LV2Plugin *plugin = (LV2Plugin *) user_data;
uint32_t index = plugin->port_index(port_symbol);
if (index != (uint32_t) -1) {
if (plugin->parameter_is_input(index) && plugin->parameter_is_control(index)) {
float *value;
*size = sizeof(float);
*type = plugin->_uri_map.uri_to_id(LV2_ATOM__Float);
value = &plugin->_shadow_data[index];
// cerr << "index="<< index << ",*size=" << *size << ",*type=" << *type << ",*value=" << *value << endl;
return value;
}
// cerr << "port is not input control port! ";
}
// cerr << "returning NULL!" << endl;
*size = *type = 0;
return NULL;
}
std::string
LV2Plugin::do_save_preset(string name)
{
// cerr << "LV2Plugin::do_save_preset(" << name << ")" << endl;
string pset_uri = uri();
pset_uri += "#";
pset_uri += name;
string save_dir = Glib::build_filename(
Glib::get_home_dir(),
Glib::build_filename(".lv2", "presets")
);
LilvState* state = lilv_state_new_from_instance(
_impl->plugin,
_impl->instance,
_uri_map.urid_map(),
scratch_dir().c_str(), // file_dir
NULL, // copy_dir
NULL, // link_dir
save_dir.c_str(), // save_dir
lv2plugin_get_port_value, // get_value
(void*) this, // user_data
LV2_STATE_IS_POD|LV2_STATE_IS_PORTABLE, // flags
_features // features
);
lilv_state_set_label(state, name.c_str());
lilv_state_save(
_world.world, // world
_uri_map.urid_map(), // map
_uri_map.urid_unmap(), // unmap
state, // state
pset_uri.c_str(), // uri
save_dir.c_str(), // dir
(name + ".ttl").c_str() // filename
);
lilv_state_free(state);
return pset_uri;
}
void
LV2Plugin::do_remove_preset(string /*name*/)
{}
LV2Plugin::do_remove_preset(string name)
{
string preset_file = Glib::build_filename(
Glib::get_home_dir(),
Glib::build_filename(
Glib::build_filename(".lv2", "presets"),
name + ".ttl"
)
);
unlink(preset_file.c_str());
}
bool
LV2Plugin::has_editor() const