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/*
Copyright (C) 2008-2010 Paul Davis
Author: David Robillard
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __ardour_lv2_plugin_h__
#define __ardour_lv2_plugin_h__
#include <set>
#include <vector>
#include <string>
#include <dlfcn.h>
#include "pbd/stateful.h"
#include <jack/types.h>
#include <slv2/slv2.h>
#include "ardour/plugin.h"
#include "ardour/uri_map.h"
namespace ARDOUR {
class AudioEngine;
class Session;
struct LV2World;
class LV2Plugin : public ARDOUR::Plugin
{
public:
LV2Plugin (ARDOUR::AudioEngine&, ARDOUR::Session&, ARDOUR::LV2World&, SLV2Plugin plugin, framecnt_t sample_rate);
LV2Plugin (const LV2Plugin &);
~LV2Plugin ();
/* Plugin interface */
std::string unique_id() const;
const char* label() const { return slv2_value_as_string(_name); }
const char* name() const { return slv2_value_as_string(_name); }
const char* maker() const { return _author ? slv2_value_as_string(_author) : "Unknown"; }
uint32_t parameter_count() const { return slv2_plugin_get_num_ports(_plugin); }
float default_value (uint32_t port);
framecnt_t signal_latency () const;
void set_parameter (uint32_t port, float val);
float get_parameter (uint32_t port) const;
int get_parameter_descriptor (uint32_t which, ParameterDescriptor&) const;
uint32_t nth_parameter (uint32_t port, bool& ok) const;
const void* extension_data(const char* uri) { return _instance->lv2_descriptor->extension_data(uri); }
SLV2Plugin slv2_plugin() { return _plugin; }
SLV2UI slv2_ui() { return _ui; }
bool is_external_ui() const;
SLV2Port slv2_port(uint32_t i) { return slv2_plugin_get_port_by_index(_plugin, i); }
const char* port_symbol(uint32_t port);
const LV2_Feature* const* features() { return _features; }
std::set<Evoral::Parameter> automatable() const;
void activate () {
if (!_was_activated) {
slv2_instance_activate(_instance);
_was_activated = true;
}
}
void deactivate () {
if (_was_activated) {
slv2_instance_deactivate(_instance);
_was_activated = false;
}
}
void cleanup () {
activate();
deactivate();
slv2_instance_free(_instance);
_instance = NULL;
}
int set_block_size (pframes_t /*nframes*/) { return 0; }
int connect_and_run (BufferSet& bufs,
ChanMapping in, ChanMapping out,
pframes_t nframes, framecnt_t offset);
std::string describe_parameter (Evoral::Parameter);
std::string state_node_name() const { return "lv2"; }
void print_parameter (uint32_t, char*, uint32_t len) const;
bool parameter_is_audio(uint32_t) const;
bool parameter_is_control(uint32_t) const;
bool parameter_is_midi(uint32_t) const;
bool parameter_is_input(uint32_t) const;
bool parameter_is_output(uint32_t) const;
bool parameter_is_toggled(uint32_t) const;
static uint32_t midi_event_type() { return _midi_event_type; }
XMLNode& get_state();
int set_state(const XMLNode& node, int version);
bool save_preset(std::string uri);
bool load_preset(const std::string& uri);
virtual std::vector<Plugin::PresetRecord> get_presets();
bool has_editor() const;
private:
void* _module;
LV2World& _world;
LV2_Feature** _features;
SLV2Plugin _plugin;
SLV2UI _ui;
SLV2Value _name;
SLV2Value _author;
SLV2Instance _instance;
framecnt_t _sample_rate;
float* _control_data;
float* _shadow_data;
float* _defaults;
float* _latency_control_port;
bool _was_activated;
bool _supports_persist;
std::vector<bool> _port_is_input;
std::map<std::string,uint32_t> _port_indices;
typedef struct { const void* (*extension_data)(const char* uri); } LV2_DataAccess;
LV2_DataAccess _data_access_extension_data;
LV2_Feature _data_access_feature;
LV2_Feature _instance_access_feature;
LV2_Feature _persist_feature;
static URIMap _uri_map;
static uint32_t _midi_event_type;
void init (LV2World& world, SLV2Plugin plugin, framecnt_t rate);
void run (pframes_t nsamples);
void latency_compute_run ();
};
/** The SLV2World, and various cached (as symbols, fast) URIs.
*
* This object represents everything ardour 'knows' about LV2
* (ie understood extensions/features/etc)
*/
struct LV2World {
LV2World();
~LV2World();
SLV2World world;
SLV2Value input_class; ///< Input port
SLV2Value output_class; ///< Output port
SLV2Value audio_class; ///< Audio port
SLV2Value control_class; ///< Control port
SLV2Value event_class; ///< Event port
SLV2Value midi_class; ///< MIDI event
SLV2Value in_place_broken;
SLV2Value integer;
SLV2Value toggled;
SLV2Value srate;
SLV2Value gtk_gui;
SLV2Value external_gui;
SLV2Value logarithmic;
};
class LV2PluginInfo : public PluginInfo {
public:
LV2PluginInfo (void* slv2_world, void* slv2_plugin);
~LV2PluginInfo ();
static PluginInfoList* discover (void* slv2_world);
PluginPtr load (Session& session);
void* _lv2_world;
void* _slv2_plugin;
};
typedef boost::shared_ptr<LV2PluginInfo> LV2PluginInfoPtr;
} // namespace ARDOUR
#endif /* __ardour_lv2_plugin_h__ */
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