185 lines
5.2 KiB
C++
185 lines
5.2 KiB
C++
/*
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Copyright (C) 2008 Paul Davis
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Author: Dave Robillard
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __ardour_lv2_plugin_h__
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#define __ardour_lv2_plugin_h__
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#include <set>
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#include <vector>
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#include <string>
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#include <dlfcn.h>
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#include <sigc++/signal.h>
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#include <pbd/stateful.h>
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#include <jack/types.h>
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#include <slv2/slv2.h>
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#include <ardour/plugin.h>
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namespace ARDOUR {
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class AudioEngine;
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class Session;
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struct LV2World;
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class LV2Plugin : public ARDOUR::Plugin
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{
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public:
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LV2Plugin (ARDOUR::AudioEngine&, ARDOUR::Session&, ARDOUR::LV2World&, SLV2Plugin plugin, nframes_t sample_rate);
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LV2Plugin (const LV2Plugin &);
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~LV2Plugin ();
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/* Plugin interface */
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std::string unique_id() const;
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const char* label() const { return slv2_value_as_string(_name); }
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const char* name() const { return slv2_value_as_string(_name); }
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const char* maker() const { return _author ? slv2_value_as_string(_author) : "Unknown"; }
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uint32_t parameter_count() const { return slv2_plugin_get_num_ports(_plugin); }
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float default_value (uint32_t port);
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nframes_t latency() const;
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void set_parameter (uint32_t port, float val);
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float get_parameter (uint32_t port) const;
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int get_parameter_descriptor (uint32_t which, ParameterDescriptor&) const;
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uint32_t nth_parameter (uint32_t port, bool& ok) const;
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const void* extension_data(const char* uri) { return _instance->lv2_descriptor->extension_data(uri); }
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SLV2Plugin slv2_plugin() { return _plugin; }
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SLV2UI slv2_ui() { return _ui; }
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bool is_external_ui() const;
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SLV2Port slv2_port(uint32_t i) { return slv2_plugin_get_port_by_index(_plugin, i); }
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const char* port_symbol(uint32_t port);
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const LV2_Feature* const* features() { return _features; }
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std::set<uint32_t> automatable() const;
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void activate () {
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if (!_was_activated) {
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slv2_instance_activate(_instance);
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_was_activated = true;
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}
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}
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void deactivate () {
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if (_was_activated) {
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slv2_instance_deactivate(_instance);
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_was_activated = false;
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}
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}
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void cleanup () {
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activate();
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deactivate();
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slv2_instance_free(_instance);
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_instance = NULL;
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}
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void set_block_size (nframes_t nframes) {}
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int connect_and_run (std::vector<Sample*>& bufs, uint32_t maxbuf, int32_t& in, int32_t& out, nframes_t nframes, nframes_t offset);
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std::string describe_parameter (uint32_t);
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std::string state_node_name() const { return "lv2"; }
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void print_parameter (uint32_t, char*, uint32_t len) const;
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bool parameter_is_audio(uint32_t) const;
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bool parameter_is_control(uint32_t) const;
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bool parameter_is_input(uint32_t) const;
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bool parameter_is_output(uint32_t) const;
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bool parameter_is_toggled(uint32_t) const;
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XMLNode& get_state();
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int set_state(const XMLNode& node);
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bool save_preset(std::string name);
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bool has_editor() const;
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private:
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void* _module;
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LV2World& _world;
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LV2_Feature** _features;
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SLV2Plugin _plugin;
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SLV2UI _ui;
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SLV2Value _name;
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SLV2Value _author;
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SLV2Instance _instance;
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nframes_t _sample_rate;
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float* _control_data;
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float* _shadow_data;
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float* _defaults;
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float* _latency_control_port;
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bool _was_activated;
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vector<bool> _port_is_input;
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typedef struct { const void* (*extension_data)(const char* uri); } LV2_DataAccess;
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LV2_DataAccess _data_access_extension_data;
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LV2_Feature _data_access_feature;
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LV2_Feature _instance_access_feature;
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void init (LV2World& world, SLV2Plugin plugin, nframes_t rate);
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void run (nframes_t nsamples);
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void latency_compute_run ();
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};
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/** The SLV2World, and various cached (as symbols, fast) URIs.
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*
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* This object represents everything ardour 'knows' about LV2
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* (ie understood extensions/features/etc)
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*/
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struct LV2World {
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LV2World();
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~LV2World();
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SLV2World world;
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SLV2Value input_class;
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SLV2Value output_class;
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SLV2Value audio_class;
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SLV2Value control_class;
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SLV2Value in_place_broken;
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SLV2Value integer;
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SLV2Value toggled;
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SLV2Value srate;
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SLV2Value gtk_gui;
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SLV2Value external_gui;
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SLV2Value logarithmic;
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};
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class LV2PluginInfo : public PluginInfo {
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public:
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LV2PluginInfo (void* slv2_world, void* slv2_plugin);;
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~LV2PluginInfo ();;
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static PluginInfoList discover (void* slv2_world);
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PluginPtr load (Session& session);
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void* _lv2_world;
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void* _slv2_plugin;
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};
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typedef boost::shared_ptr<LV2PluginInfo> LV2PluginInfoPtr;
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} // namespace ARDOUR
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#endif /* __ardour_lv2_plugin_h__ */
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