aboutsummaryrefslogtreecommitdiffstats
path: root/lv2
diff options
context:
space:
mode:
authorDavid Robillard <d@drobilla.net>2016-12-17 22:32:34 -0500
committerDavid Robillard <d@drobilla.net>2017-02-26 14:59:00 +0100
commitc8b942918517fdeefd9886bfbae1d00ec62d47b0 (patch)
tree613a0f78b1dc00c0f40ad03805c568cadf634077 /lv2
parent56f064dce822a53ad668c38d1bb7b2b3025fe270 (diff)
downloadlv2-c8b942918517fdeefd9886bfbae1d00ec62d47b0.tar.xz
Add C++ bindings
Diffstat (limited to 'lv2')
-rw-r--r--lv2/lv2plug.in/ns/ext/atom/atom.hpp81
-rw-r--r--lv2/lv2plug.in/ns/ext/urid/urid.hpp114
-rw-r--r--lv2/lv2plug.in/ns/lv2core/Feature.hpp74
-rw-r--r--lv2/lv2plug.in/ns/lv2core/Lib.hpp81
-rw-r--r--lv2/lv2plug.in/ns/lv2core/Plugin.hpp260
5 files changed, 610 insertions, 0 deletions
diff --git a/lv2/lv2plug.in/ns/ext/atom/atom.hpp b/lv2/lv2plug.in/ns/ext/atom/atom.hpp
new file mode 100644
index 0000000..87871c0
--- /dev/null
+++ b/lv2/lv2plug.in/ns/ext/atom/atom.hpp
@@ -0,0 +1,81 @@
+/*
+ Copyright 2008-2014 David Robillard <http://drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef LV2_ATOM_ATOM_HPP
+#define LV2_ATOM_ATOM_HPP
+
+#include "lv2/lv2plug.in/ns/ext/atom/atom.h"
+#include "lv2/lv2plug.in/ns/ext/atom/util.h"
+
+namespace lv2 {
+namespace atom {
+
+typedef LV2_Atom Atom;
+
+struct Event : public LV2_Atom_Event
+{
+ inline uint32_t type() const { return body.type; }
+ inline uint32_t size() const { return body.size; }
+
+ /** Convenience accessor for byte-oriented payloads. */
+ inline uint8_t operator[](size_t i) const {
+ return *((const uint8_t*)(&body + 1) + i);
+ }
+};
+
+class Sequence : public LV2_Atom_Sequence
+{
+public:
+ class const_iterator {
+ public:
+ inline const_iterator(const Event* ev) : m_ev(ev) {}
+
+ inline const_iterator operator++() {
+ m_ev = (const Event*)(
+ (const uint8_t*)m_ev +
+ sizeof(LV2_Atom_Event) +
+ lv2_atom_pad_size(m_ev->body.size));
+ return *this;
+ }
+
+ inline bool operator==(const const_iterator& i) const {
+ return m_ev == i.m_ev;
+ }
+
+ inline bool operator!=(const const_iterator& i) const {
+ return m_ev != i.m_ev;
+ }
+
+ inline const Event& operator*() const { return *m_ev; }
+ inline const Event* operator->() const { return m_ev; }
+
+ private:
+ const Event* m_ev;
+ };
+
+ inline const_iterator begin() const {
+ return const_iterator((const Event*)(&body + 1));
+ }
+
+ inline const_iterator end() const {
+ return const_iterator((const Event*)((const char*)&body + atom.size));
+ }
+};
+
+} // namespace atom
+} // namespace lv2
+
+#endif // LV2_ATOM_ATOM_HPP
diff --git a/lv2/lv2plug.in/ns/ext/urid/urid.hpp b/lv2/lv2plug.in/ns/ext/urid/urid.hpp
new file mode 100644
index 0000000..38fa8be
--- /dev/null
+++ b/lv2/lv2plug.in/ns/ext/urid/urid.hpp
@@ -0,0 +1,114 @@
+/*
+ Copyright 2015 David Robillard <http://drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef LV2_URID_HPP
+#define LV2_URID_HPP
+
+#include "lv2/lv2plug.in/ns/lv2core/Feature.hpp"
+#include "lv2/lv2plug.in/ns/ext/urid/urid.h"
+
+namespace lv2 {
+namespace urid {
+
+/**
+ URI mapped to an integer.
+*/
+typedef LV2_URID URID;
+
+/**
+ URID Map Feature (LV2_URID__map)
+*/
+template<bool Required>
+class Map : public Feature<LV2_URID_Map, Required>
+{
+public:
+ Map(const LV2_Feature*const* features,
+ bool* valid)
+ : Feature<LV2_URID_Map, true>(features, LV2_URID__map, valid)
+ {}
+
+ /**
+ Get the numeric ID of a URI.
+
+ If the ID does not already exist, it will be created.
+
+ This function is referentially transparent; any number of calls with the
+ same arguments is guaranteed to return the same value over the life of a
+ plugin instance. Note, however, that several URIs MAY resolve to the
+ same ID if the host considers those URIs equivalent.
+
+ This function is not necessarily very fast or RT-safe: plugins SHOULD
+ cache any IDs they might need in performance critical situations.
+
+ The return value 0 is reserved and indicates that an ID for that URI
+ could not be created for whatever reason. However, hosts SHOULD NOT
+ return 0 from this function in non-exceptional circumstances (i.e. the
+ URI map SHOULD be dynamic).
+
+ @param handle Must be the callback_data member of this struct.
+ @param uri The URI to be mapped to an integer ID.
+ */
+ LV2_URID map(const char* uri) {
+ return this->m_data->map(this->m_data->handle, uri);
+ }
+
+ /**
+ Convenience wrapper for calling map().
+ */
+ LV2_URID operator()(const char* uri) { return map(uri); }
+};
+
+/**
+ URI Unmap Feature (LV2_URID__unmap)
+*/
+template<bool Required>
+class Unmap : public Feature<LV2_URID_Unmap, Required>
+{
+public:
+ Unmap(const LV2_Feature*const* features,
+ bool* valid)
+ : Feature<LV2_URID_Map, true>(features, LV2_URID__unmap, valid)
+ {}
+
+ /**
+ Get the URI for a previously mapped numeric ID.
+
+ Returns NULL if `urid` is not yet mapped. Otherwise, the corresponding
+ URI is returned in a canonical form. This MAY not be the exact same
+ string that was originally passed to LV2_URID_Map::map(), but it MUST be
+ an identical URI according to the URI syntax specification (RFC3986). A
+ non-NULL return for a given `urid` will always be the same for the life
+ of the plugin. Plugins that intend to perform string comparison on
+ unmapped URIs SHOULD first canonicalise URI strings with a call to
+ map_uri() followed by a call to unmap_uri().
+
+ @param handle Must be the callback_data member of this struct.
+ @param urid The ID to be mapped back to the URI string.
+ */
+ const char* unmap(LV2_URID urid) {
+ return this->m_data->unmap(this->m_data->handle, urid);
+ }
+
+ /**
+ Convenience wrapper for calling unmap().
+ */
+ const char* operator()(LV2_URID urid) { return unmap(urid); }
+};
+
+} // namespace urid
+} // namespace lv2
+
+#endif // LV2_URID_HPP
diff --git a/lv2/lv2plug.in/ns/lv2core/Feature.hpp b/lv2/lv2plug.in/ns/lv2core/Feature.hpp
new file mode 100644
index 0000000..81be218
--- /dev/null
+++ b/lv2/lv2plug.in/ns/lv2core/Feature.hpp
@@ -0,0 +1,74 @@
+/*
+ Copyright 2015 David Robillard <http://drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef LV2_FEATURE_HPP
+#define LV2_FEATURE_HPP
+
+#include <string.h>
+
+#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
+#include "lv2/lv2plug.in/ns/ext/urid/urid.h"
+
+namespace lv2 {
+
+/**
+ Feature.
+
+ Features allow hosts to make additional functionality available to plugins
+ without requiring modification to the LV2 API. Extensions may define new
+ features and specify the `URI` and `data` to be used if necessary.
+ Some features, such as lv2:isLive, do not require the host to pass data.
+*/
+template<typename Data, bool Required>
+class Feature
+{
+public:
+ /**
+ Initialize feature by retrieving data from the host.
+
+ @param features Feature array passed by the host.
+ @param uri URI of this feature.
+ @param valid Set to false iff feature is required but unsupported.
+ */
+ Feature(const LV2_Feature*const* features,
+ const char* uri,
+ bool* valid)
+ : m_data(nullptr)
+ , m_supported(false)
+ {
+ for (const LV2_Feature*const* f = features; *f; ++f) {
+ if (!strcmp((*f)->URI, uri)) {
+ m_data = (Data*)(*f)->data;
+ m_supported = true;
+ break;
+ }
+ }
+ if (Required && !m_supported) {
+ *valid = false;
+ }
+ }
+
+ Data* data() const { return m_data; }
+ bool supported() const { return m_supported; }
+
+protected:
+ Data* m_data;
+ bool m_supported;
+};
+
+} // namespace lv2
+
+#endif // LV2_URID_HPP
diff --git a/lv2/lv2plug.in/ns/lv2core/Lib.hpp b/lv2/lv2plug.in/ns/lv2core/Lib.hpp
new file mode 100644
index 0000000..5d7670b
--- /dev/null
+++ b/lv2/lv2plug.in/ns/lv2core/Lib.hpp
@@ -0,0 +1,81 @@
+/*
+ Copyright 2015 David Robillard <http://drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef LV2_LIB_HPP
+#define LV2_LIB_HPP
+
+#include "lv2/lv2plug.in/ns/lv2core/Plugin.hpp"
+
+namespace lv2 {
+
+/**
+ C++ wrapper for an LV2 plugin library.
+
+ This interface is a convenience for plugin authors only, and is not an ABI
+ used by hosts. Plugin authors should inherit from this interface, passing
+ their derived class as the template parameter, and provide an
+ lv2_lib_descriptor entry point in C:
+
+ @code
+ class MyLib : public lv2::Lib<MyLib> { ... };
+
+ LV2_SYMBOL_EXPORT static const LV2_Lib_Descriptor*
+ lv2_lib_descriptor(const char* bundle_path,
+ const LV2_Feature *const * features)
+ {
+ return new MyLib(bundle_path, features);
+ }
+ @endcode
+*/
+template<class Derived>
+class Lib : public LV2_Lib_Descriptor
+{
+public:
+ /**
+ Library constructor.
+ */
+ Lib(const char* bundle_path,
+ const LV2_Feature*const* features)
+ {
+ LV2_Lib_Descriptor::handle = this;
+ LV2_Lib_Descriptor::size = sizeof(LV2_Lib_Descriptor);
+ LV2_Lib_Descriptor::cleanup = s_cleanup;
+ LV2_Lib_Descriptor::get_plugin = s_get_plugin;
+ }
+
+ /**
+ Plugin accessor, override to return your plugin descriptors.
+
+ Plugins are accessed by index using values from 0 upwards. Out of range
+ indices MUST result in this function returning NULL, so the host can
+ enumerate plugins by increasing `index` until NULL is returned.
+ */
+ const LV2_Descriptor* get_plugin(uint32_t index) { return NULL; }
+
+private:
+ static void s_cleanup(LV2_Lib_Handle handle) {
+ delete reinterpret_cast<Derived*>(handle);
+ }
+
+ static const LV2_Descriptor* s_get_plugin(LV2_Lib_Handle handle,
+ uint32_t index) {
+ return reinterpret_cast<Derived*>(handle)->get_plugin(index);
+ }
+};
+
+} /* namespace lv2 */
+
+#endif /* LV2_LIB_HPP */
diff --git a/lv2/lv2plug.in/ns/lv2core/Plugin.hpp b/lv2/lv2plug.in/ns/lv2core/Plugin.hpp
new file mode 100644
index 0000000..f671640
--- /dev/null
+++ b/lv2/lv2plug.in/ns/lv2core/Plugin.hpp
@@ -0,0 +1,260 @@
+/*
+ Copyright 2015 David Robillard <http://drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef LV2_PLUGIN_HPP
+#define LV2_PLUGIN_HPP
+
+#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
+
+namespace lv2 {
+
+/**
+ C++ interface for writing an LV2 plugin.
+
+ This interface is a convenience for plugin authors only, and is not an ABI
+ used by hosts. To implement a plugin, inherit from this interface with the
+ derived class passed as the template parameter. The C LV2_Descriptor for the
+ plugin can be fetched with descriptor().
+
+ @code
+ class MyPlug : public lv2::Plugin<MyPlug> {
+ // ...
+ };
+
+ static const LV2_Descriptor p = MyPlug::descriptor("http://example.org/plug");
+ @endcode
+
+ This class is a stateless interface and imposes no restrictions or overhead
+ compared to a plugin implemented using the underlying C interface. Note
+ that this is not a virtual class, so calling methods from a Plugin* base
+ pointer will not work. Instead, anything that must dispatch on Plugin
+ methods takes a template parameter for static dispatch.
+
+ The destructor will be called when the host cleans up the plugin.
+*/
+template<class Derived>
+class Plugin
+{
+public:
+ /**
+ Instantiate the plugin.
+
+ Note that instance initialisation should generally occur in activate()
+ rather than here. If a host calls instantiate(), it MUST call cleanup()
+ at some point in the future.
+
+ @param sample_rate Sample rate, in Hz, for the new plugin instance.
+
+ @param bundle_path Path to the LV2 bundle which contains this plugin
+ binary. It MUST include the trailing directory separator (e.g. '/') so
+ that simply appending a filename will yield the path to that file in the
+ bundle.
+
+ @param features A NULL terminated array of LV2_Feature structs which
+ represent the features the host supports. Plugins may refuse to
+ instantiate if required features are not found here. However, hosts MUST
+ NOT use this as a discovery mechanism: instead, use the RDF data to
+ determine which features are required and do not attempt to instantiate
+ unsupported plugins at all. This parameter MUST NOT be NULL, i.e. a host
+ that supports no features MUST pass a single element array containing
+ NULL.
+
+ @param valid A pointer to a boolean that must be set to true if the
+ plugin instantiates correctly. The C++ wrappers will free the instance
+ and return NULL to the host automatically on failure.
+
+ @return A handle for the new plugin instance, or NULL if instantiation
+ has failed.
+ */
+ Plugin(double sample_rate,
+ const char* bundle_path,
+ const LV2_Feature*const* features,
+ bool* valid)
+ {}
+
+ /**
+ Connect a port on a plugin instance to a memory location.
+
+ Plugin writers should be aware that the host may elect to use the same
+ buffer for more than one port and even use the same buffer for both
+ input and output (see lv2:inPlaceBroken in lv2.ttl).
+
+ If the plugin has the feature lv2:hardRTCapable then there are various
+ things that the plugin MUST NOT do within the connect_port() function;
+ see lv2core.ttl for details.
+
+ connect_port() MUST be called at least once for each port before run()
+ is called, unless that port is lv2:connectionOptional. The plugin must
+ pay careful attention to the block size passed to run() since the block
+ allocated may only just be large enough to contain the data, and is not
+ guaranteed to remain constant between run() calls.
+
+ connect_port() may be called more than once for a plugin instance to
+ allow the host to change the buffers that the plugin is reading or
+ writing. These calls may be made before or after activate() or
+ deactivate() calls.
+
+ @param port Index of the port to connect. The host MUST NOT try to
+ connect a port index that is not defined in the plugin's RDF data. If
+ it does, the plugin's behaviour is undefined (a crash is likely).
+
+ @param data_location Pointer to data of the type defined by the port
+ type in the plugin's RDF data (e.g. an array of float for an
+ lv2:AudioPort). This pointer must be stored by the plugin instance and
+ used to read/write data when run() is called. Data present at the time
+ of the connect_port() call MUST NOT be considered meaningful.
+ */
+ void connect_port(uint32_t port, void* data_location) {}
+
+ /**
+ Initialise a plugin instance and activate it for use.
+
+ This is separated from instantiate() to aid real-time support and so
+ that hosts can reinitialise a plugin instance by calling deactivate()
+ and then activate(). In this case the plugin instance MUST reset all
+ state information dependent on the history of the plugin instance except
+ for any data locations provided by connect_port(). If there is nothing
+ for activate() to do then this field may be NULL.
+
+ When present, hosts MUST call this function once before run() is called
+ for the first time. This call SHOULD be made as close to the run() call
+ as possible and indicates to real-time plugins that they are now live,
+ however plugins MUST NOT rely on a prompt call to run() after
+ activate().
+
+ The host MUST NOT call activate() again until deactivate() has been
+ called first. If a host calls activate(), it MUST call deactivate() at
+ some point in the future. Note that connect_port() may be called before
+ or after activate().
+ */
+ void activate() {}
+
+ /**
+ Run a plugin instance for a block.
+
+ Note that if an activate() function exists then it must be called before
+ run(). If deactivate() is called for a plugin instance then run() may
+ not be called until activate() has been called again.
+
+ If the plugin has the feature lv2:hardRTCapable then there are various
+ things that the plugin MUST NOT do within the run() function (see
+ lv2core.ttl for details).
+
+ As a special case, when `sample_count` is 0, the plugin should update
+ any output ports that represent a single instant in time (e.g. control
+ ports, but not audio ports). This is particularly useful for latent
+ plugins, which should update their latency output port so hosts can
+ pre-roll plugins to compute latency. Plugins MUST NOT crash when
+ `sample_count` is 0.
+
+ @param sample_count The block size (in samples) for which the plugin
+ instance must run.
+ */
+ void run(uint32_t sample_count) {}
+
+ /**
+ Deactivate a plugin instance (counterpart to activate()).
+
+ Hosts MUST deactivate all activated instances after they have been run()
+ for the last time. This call SHOULD be made as close to the last run()
+ call as possible and indicates to real-time plugins that they are no
+ longer live, however plugins MUST NOT rely on prompt deactivation. If
+ there is nothing for deactivate() to do then this field may be NULL
+
+ Deactivation is not similar to pausing since the plugin instance will be
+ reinitialised by activate(). However, deactivate() itself MUST NOT fully
+ reset plugin state. For example, the host may deactivate a plugin, then
+ store its state (using some extension to do so).
+
+ Hosts MUST NOT call deactivate() unless activate() was previously
+ called. Note that connect_port() may be called before or after
+ deactivate().
+ */
+ void deactivate() {}
+
+ /**
+ Return additional plugin data defined by some extenion.
+
+ A typical use of this facility is to return a struct containing function
+ pointers to extend the LV2_Descriptor API.
+
+ The actual type and meaning of the returned object MUST be specified
+ precisely by the extension. This function MUST return NULL for any
+ unsupported URI. If a plugin does not support any extension data, this
+ field may be NULL.
+
+ The host is never responsible for freeing the returned value.
+ */
+ static const void* extension_data(const char* uri) { return NULL; }
+
+ /**
+ Get an LV2_Descriptor for a plugin class.
+
+ @code
+ static const LV2_Descriptor a = lv2::descriptor<Amp>("http://example.org/amp");
+ @endcode
+ */
+ static LV2_Descriptor descriptor(const char* uri) {
+ const LV2_Descriptor desc = { uri,
+ &s_instantiate,
+ &s_connect_port,
+ &s_activate,
+ &s_run,
+ &s_deactivate,
+ &s_cleanup,
+ &Plugin::extension_data };
+ return desc;
+ }
+
+private:
+ static LV2_Handle s_instantiate(const LV2_Descriptor* descriptor,
+ double rate,
+ const char* bundle,
+ const LV2_Feature* const* features) {
+ bool valid = true;
+ Derived* instance = new Derived(rate, bundle, features, &valid);
+ if (!valid) {
+ delete instance;
+ return nullptr;
+ }
+ return reinterpret_cast<LV2_Handle>(instance);
+ }
+
+ static void s_connect_port(LV2_Handle instance, uint32_t port, void* buf) {
+ reinterpret_cast<Derived*>(instance)->connect_port(port, buf);
+ }
+
+ static void s_activate(LV2_Handle instance) {
+ reinterpret_cast<Derived*>(instance)->activate();
+ }
+
+ static void s_run(LV2_Handle instance, uint32_t sample_count) {
+ reinterpret_cast<Derived*>(instance)->run(sample_count);
+ }
+
+ static void s_deactivate(LV2_Handle instance) {
+ reinterpret_cast<Derived*>(instance)->deactivate();
+ }
+
+ static void s_cleanup(LV2_Handle instance) {
+ delete reinterpret_cast<Derived*>(instance);
+ }
+};
+
+} /* namespace lv2 */
+
+#endif /* LV2_PLUGIN_HPP */
+