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Update LV2 persist extension implementation (now named LV2 state).

Browse source 
git-svn-id: svn://localhost/ardour2/branches/3.0@10556 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
David Robillard 2011-11-11 22:54:45 +00:00
parent 5314311e78
commit c4bec7f098
5 changed files with 340 additions and 296 deletions
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29
libs/ardour/ardour/lv2_plugin.h
View file

@ -129,7 +129,7 @@ class LV2Plugin : public ARDOUR::Plugin
float* _defaults;
float* _latency_control_port;
bool _was_activated;
bool _supports_persist;
bool _has_state_interface;
std::vector<bool> _port_is_input;
std::map<std::string,uint32_t> _port_indices;
@ -145,22 +145,25 @@ class LV2Plugin : public ARDOUR::Plugin
LV2_Feature _instance_access_feature;
LV2_Feature _path_support_feature;
LV2_Feature _new_file_support_feature;
LV2_Feature _persist_feature;
static URIMap _uri_map;
static uint32_t _midi_event_type;
static int lv2_persist_store_callback (void* host_data,
uint32_t key,
const void* value,
size_t size,
uint32_t type,
uint32_t flags);
static const void* lv2_persist_retrieve_callback (void* host_data,
uint32_t key,
size_t* size,
uint32_t* type,
uint32_t* flags);
static int
lv2_state_store_callback (void* handle,
uint32_t key,
const void* value,
size_t size,
uint32_t type,
uint32_t flags);
static const void*
lv2_state_retrieve_callback (void* handle,
uint32_t key,
size_t* size,
uint32_t* type,
uint32_t* flags);
static char* lv2_files_abstract_path (void* host_data,
const char* absolute_path);
static char* lv2_files_absolute_path (void* host_data,

8
libs/ardour/ardour/lv2_state.h
View file

@ -34,8 +34,8 @@
namespace ARDOUR {
struct LV2PersistState {
LV2PersistState(URIMap& map) : uri_map(map) {}
struct LV2State {
LV2State(URIMap& map) : uri_map(map) {}
struct Value {
inline Value(uint32_t k, const void* v, size_t s, uint32_t t, uint32_t f)
@ -122,8 +122,8 @@ struct LV2PersistState {
// Write all values to state file
for (Values::const_iterator i = values.begin(); i != values.end(); ++i) {
const uint32_t key = i->first;
const LV2PersistState::Value& val = i->second;
const uint32_t key = i->first;
const LV2State::Value& val = i->second;
rdff_write_triple(file,
0,
key,

228
libs/ardour/lv2/lv2plug.in/ns/ext/persist/persist.h
View file

@ -1,228 +0,0 @@
/*
Copyright 2010-2011 David Robillard <http://drobilla.net>
Copyright 2010 Leonard Ritter <paniq@paniq.org>
This header is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This header 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this header; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 01222-1307 USA
*/
/**
@file
C API for the LV2 Persist extension <http://lv2plug.in/ns/ext/persist>.
*/
#ifndef LV2_PERSIST_H
#define LV2_PERSIST_H
#include <stdbool.h>
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
#define LV2_PERSIST_URI "http://lv2plug.in/ns/ext/persist"
/**
Flags describing value characteristics.
These flags are used along with the value's type URI to determine how to
(de-)serialise the value data, or whether it is even possible to do so.
*/
typedef enum {
/**
Plain Old Data.
Values with this flag contain no references to non-persistent or
non-global resources (e.g. pointers, handles, local paths, etc.). It is
safe to copy POD values with a simple memcpy and store them for use at
any time in the future on a machine with a compatible architecture
(e.g. the same endianness and alignment).
Implementations MUST NOT attempt to copy or serialise a non-POD value if
they do not understand its type (and thus know how to correctly do so).
*/
LV2_PERSIST_IS_POD = 1,
/**
Portable (architecture independent) data.
Values with this flag are in a format that is usable on any
architecture, i.e. if the value is saved on one machine it can safely be
restored on another machine regardless of endianness, alignment, etc.
*/
LV2_PERSIST_IS_PORTABLE = 1 << 1
} LV2_Persist_Flags;
/**
A host-provided function to store a plugin instance property.
@param callback_data Must be the callback_data passed to LV2_Persist.save().
@param key The key (predicate) to store @a value under (URI mapped integer).
@param value Pointer to the value (object) to be stored.
@param size The size of the data at @a value in bytes.
@param type The type of @a value (URI).
@param flags LV2_Persist_Flags for @a value.
@return 0 on success, otherwise a non-zero error code.
The host passes a callback of this type to LV2_Persist.save(). This callback
is called repeatedly by the plugin within LV2_Persist.save() to store all
the statements that describe its current state.
The host MAY fail to store a property if the type is not understood and is
not LV2_PERSIST_IS_POD and/or LV2_PERSIST_IS_PORTABLE. Implementations are
encouraged to use POD and portable values (e.g. string literals) wherever
possible, and use common types (e.g. types from
http://lv2plug.in/ns/ext/atom) regardless, since hosts are likely to already
contain the necessary implementation.
Note that @a size MUST be > 0, and @a value MUST point to a valid region of
memory @a size bytes long (this is required to make restore unambiguous).
The plugin MUST NOT attempt to use this function outside of the
LV2_Persist.restore() context.
*/
typedef int (*LV2_Persist_Store_Function)(
void* callback_data,
uint32_t key,
const void* value,
size_t size,
uint32_t type,
uint32_t flags);
/**
A host-provided function to retrieve a property.
@param callback_data Must be the callback_data passed to LV2_Persist.restore().
@param key The key (predicate) of the property to retrieve (URI).
@param size (Output) If non-NULL, set to the size of the restored value.
@param type (Output) If non-NULL, set to the type of the restored value.
@param flags (Output) If non-NULL, set to the LV2_Persist_Flags for
the returned value.
@return A pointer to the restored value (object), or NULL if no value
has been stored under @a key.
A callback of this type is passed by the host to LV2_Persist.restore(). This
callback is called repeatedly by the plugin within LV2_Persist.restore() to
retrieve any properties it requires to restore its state.
The returned value MUST remain valid until LV2_Persist.restore() returns.
The plugin MUST NOT attempt to use this function, or any value returned from
it, outside of the LV2_Persist.restore() context. Returned values MAY be
copied for later use if necessary, assuming the plugin knows how to do so
correctly (e.g. the value is POD, or the plugin understands the type).
*/
typedef const void* (*LV2_Persist_Retrieve_Function)(
void* callback_data,
uint32_t key,
size_t* size,
uint32_t* type,
uint32_t* flags);
/**
Persist Extension Data.
When the plugin's extension_data is called with argument LV2_PERSIST_URI,
the plugin MUST return an LV2_Persist structure, which remains valid for the
lifetime of the plugin.
The host can use the contained function pointers to save and restore the
state of a plugin instance at any time (provided the threading restrictions
for the given function are met).
The typical use case is to save the plugin's state when a project is saved,
and to restore the state when a project has been loaded. Other uses are
possible (e.g. cloning plugin instances or taking a snapshot of plugin
state).
Stored data is only guaranteed to be compatible between instances of plugins
with the same URI (i.e. if a change to a plugin would cause a fatal error
when restoring state saved by a previous version of that plugin, the plugin
URI MUST change just as it must when ports change incompatibly). Plugin
authors should consider this possibility, and always store sensible data
with meaningful types to avoid such compatibility issues in the future.
*/
typedef struct _LV2_Persist {
/**
Save plugin state using a host-provided @a store callback.
@param instance The instance handle of the plugin.
@param store The host-provided store callback.
@param callback_data An opaque pointer to host data, e.g. the map or
file where the values are to be stored. If @a store is called,
this MUST be passed as its callback_data parameter.
The plugin is expected to store everything necessary to completely
restore its state later (possibly much later, in a different process, on
a completely different machine, etc.)
The @a callback_data pointer and @a store function MUST NOT be used
beyond the scope of save().
This function has its own special threading class: it may not be called
concurrently with any "Instantiation" function, but it may be called
concurrently with functions in any other class, unless the definition of
that class prohibits it (e.g. it may not be called concurrently with a
"Discovery" function, but it may be called concurrently with an "Audio"
function. The plugin is responsible for any locking or lock-free
techniques necessary to make this possible.
Note that in the simple case where state is only modified by restore(),
there are no synchronization issues since save() is never called
concurrently with restore() (though run() may read it during a save).
Plugins that dynamically modify state while running, however, must take
care to do so in such a way that a concurrent call to save() will save a
consistent representation of plugin state for a single instant in time.
*/
void (*save)(LV2_Handle instance,
LV2_Persist_Store_Function store,
void* callback_data);
/**
Restore plugin state using a host-provided @a retrieve callback.
@param instance The instance handle of the plugin.
@param retrieve The host-provided retrieve callback.
@param callback_data An opaque pointer to host data, e.g. the map or
file from which the values are to be restored. If @a retrieve is
called, this MUST be passed as its callback_data parameter.
The plugin MAY assume a restored value was set by a previous call to
LV2_Persist.save() by a plugin with the same URI.
The plugin MUST gracefully fall back to a default value when a value can
not be retrieved. This allows the host to reset the plugin state with an
empty map.
The @a callback_data pointer and @a store function MUST NOT be used
beyond the scope of restore().
This function is in the "Instantiation" threading class as defined by
LV2. This means it MUST NOT be called concurrently with any other
function on the same plugin instance.
*/
void (*restore)(LV2_Handle instance,
LV2_Persist_Retrieve_Function retrieve,
void* callback_data);
} LV2_Persist;
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* LV2_PERSIST_H */

256
libs/ardour/lv2/lv2plug.in/ns/ext/state/state.h Normal file
View file

@ -0,0 +1,256 @@
/*
Copyright 2010-2011 David Robillard <http://drobilla.net>
Copyright 2010 Leonard Ritter <paniq@paniq.org>
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.
*/
/**
@file
C API for the LV2 State extension <http://lv2plug.in/ns/ext/state>.
*/
#ifndef LV2_STATE_H
#define LV2_STATE_H
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
#ifdef __cplusplus
extern "C" {
#endif
#define LV2_STATE_URI "http://lv2plug.in/ns/ext/state"
typedef void* LV2_State_Handle;
/**
Flags describing value characteristics.
These flags are used along with the value's type URI to determine how to
(de-)serialise the value data, or whether it is even possible to do so.
*/
typedef enum {
/**
Plain Old Data.
Values with this flag contain no references to non-stateent or
non-global resources (e.g. pointers, handles, local paths, etc.). It is
safe to copy POD values with a simple memcpy and store them for use at
any time in the future on a machine with a compatible architecture
(e.g. the same endianness and alignment).
Implementations MUST NOT attempt to copy or serialise a non-POD value if
they do not understand its type (and thus know how to correctly do so).
*/
LV2_STATE_IS_POD = 1,
/**
Portable (architecture independent) data.
Values with this flag are in a format that is usable on any
architecture, i.e. if the value is saved on one machine it can safely be
restored on another machine regardless of endianness, alignment, etc.
*/
LV2_STATE_IS_PORTABLE = 1 << 1,
/**
Native data.
This flag is used by the host to indicate that the saved data is only
going to be used locally in the currently running process (e.g. for
instance duplication or snapshots), so the plugin should use the most
efficient representation possible and not worry about serialisation
and portability.
*/
LV2_STATE_IS_NATIVE = 1 << 2
} LV2_State_Flags;
/**
A host-provided function to store a property.
@param handle Must be the handle passed to LV2_State_Interface.save().
@param key The key (predicate) to store @c value under (URI mapped integer).
@param value Pointer to the value (object) to be stored.
@param size The size of the data at @c value in bytes.
@param type The type of @c value (URI).
@param flags LV2_State_Flags for @c value.
@return 0 on success, otherwise a non-zero error code.
The host passes a callback of this type to LV2_State_Interface.save(). This callback
is called repeatedly by the plugin within LV2_State_Interface.save() to store all
the statements that describe its current state.
The host MAY fail to store a property if the type is not understood and is
not LV2_STATE_IS_POD and/or LV2_STATE_IS_PORTABLE. Implementations are
encouraged to use POD and portable values (e.g. string literals) wherever
possible, and use common types (e.g. types from
http://lv2plug.in/ns/ext/atom) regardless, since hosts are likely to already
contain the necessary implementation.
Note that @c size MUST be > 0, and @c value MUST point to a valid region of
memory @c size bytes long (this is required to make restore unambiguous).
The plugin MUST NOT attempt to use this function outside of the
LV2_State_Interface.restore() context.
*/
typedef int (*LV2_State_Store_Function)(LV2_State_Handle handle,
uint32_t key,
const void* value,
size_t size,
uint32_t type,
uint32_t flags);
/**
A host-provided function to retrieve a property.
@param handle Must be the handle passed to
LV2_State_Interface.restore().
@param key The key (predicate) of the property to retrieve (URI).
@param size (Output) If non-NULL, set to the size of the restored value.
@param type (Output) If non-NULL, set to the type of the restored value.
@param flags (Output) If non-NULL, set to the LV2_State_Flags for
the returned value.
@return A pointer to the restored value (object), or NULL if no value
has been stored under @c key.
A callback of this type is passed by the host to
LV2_State_Interface.restore(). This callback is called repeatedly by the
plugin within LV2_State_Interface.restore() to retrieve any properties it
requires to restore its state.
The returned value MUST remain valid until LV2_State_Interface.restore()
returns.
The plugin MUST NOT attempt to use this function, or any value returned from
it, outside of the LV2_State_Interface.restore() context. Returned values
MAY be copied for later use if necessary, assuming the plugin knows how to
do so correctly (e.g. the value is POD, or the plugin understands the type).
*/
typedef const void* (*LV2_State_Retrieve_Function)(LV2_State_Handle handle,
uint32_t key,
size_t* size,
uint32_t* type,
uint32_t* flags);
/**
State Extension Data.
When the plugin's extension_data is called with argument LV2_STATE_URI,
the plugin MUST return an LV2_State structure, which remains valid for the
lifetime of the plugin.
The host can use the contained function pointers to save and restore the
state of a plugin instance at any time (provided the threading restrictions
for the given function are met).
The typical use case is to save the plugin's state when a project is saved,
and to restore the state when a project has been loaded. Other uses are
possible (e.g. cloning plugin instances or taking a snapshot of plugin
state).
Stored data is only guaranteed to be compatible between instances of plugins
with the same URI (i.e. if a change to a plugin would cause a fatal error
when restoring state saved by a previous version of that plugin, the plugin
URI MUST change just as it must when ports change incompatibly). Plugin
authors should consider this possibility, and always store sensible data
with meaningful types to avoid such compatibility issues in the future.
*/
typedef struct _LV2_State_Interface {
/**
Save plugin state using a host-provided @c store callback.
@param instance The instance handle of the plugin.
@param store The host-provided store callback.
@param handle An opaque pointer to host data, e.g. the map or
file where the values are to be stored. If @c store is called, this MUST
be passed as its handle parameter.
@param flags Flags describing desires properties of this save. The
plugin SHOULD use these values to determine the most appropriate and/or
efficient serialisation, but is not required to do so.
@param features Extensible parameter for passing any additional
features to be used for this save.
The plugin is expected to store everything necessary to completely
restore its state later (possibly much later, in a different process, on
a completely different machine, etc.)
The @c handle pointer and @c store function MUST NOT be used
beyond the scope of save().
This function has its own special threading class: it may not be called
concurrently with any "Instantiation" function, but it may be called
concurrently with functions in any other class, unless the definition of
that class prohibits it (e.g. it may not be called concurrently with a
"Discovery" function, but it may be called concurrently with an "Audio"
function. The plugin is responsible for any locking or lock-free
techniques necessary to make this possible.
Note that in the simple case where state is only modified by restore(),
there are no synchronization issues since save() is never called
concurrently with restore() (though run() may read it during a save).
Plugins that dynamically modify state while running, however, must take
care to do so in such a way that a concurrent call to save() will save a
consistent representation of plugin state for a single instant in time.
*/
void (*save)(LV2_Handle instance,
LV2_State_Store_Function store,
LV2_State_Handle handle,
uint32_t flags,
const LV2_Feature *const * features);
/**
Restore plugin state using a host-provided @c retrieve callback.
@param instance The instance handle of the plugin.
@param retrieve The host-provided retrieve callback.
@param handle An opaque pointer to host data, e.g. the map or
file from which the values are to be restored. If @c retrieve is
called, this MUST be passed as its handle parameter.
@param flags Currently unused.
@param features Extensible parameter for passing any additional
features to be used for this restore.
The plugin MAY assume a restored value was set by a previous call to
LV2_State_Interface.save() by a plugin with the same URI.
The plugin MUST gracefully fall back to a default value when a value can
not be retrieved. This allows the host to reset the plugin state with an
empty map.
The @c handle pointer and @c store function MUST NOT be used
beyond the scope of restore().
This function is in the "Instantiation" threading class as defined by
LV2. This means it MUST NOT be called concurrently with any other
function on the same plugin instance.
*/
void (*restore)(LV2_Handle instance,
LV2_State_Retrieve_Function retrieve,
LV2_State_Handle handle,
uint32_t flags,
const LV2_Feature *const * features);
} LV2_State_Interface;
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* LV2_STATE_H */

115
libs/ardour/lv2_plugin_lilv.cc
View file

@ -52,16 +52,17 @@
#include <lilv/lilv.h>
#include "lv2/lv2plug.in/ns/ext/files/files.h"
#include "lv2/lv2plug.in/ns/ext/persist/persist.h"
#include "lv2/lv2plug.in/ns/ext/state/state.h"
#include "rdff.h"
#ifdef HAVE_SUIL
#include <suil/suil.h>
#endif
#define NS_DC "http://dublincore.org/documents/dcmi-namespace/"
#define NS_LV2 "http://lv2plug.in/ns/lv2core#"
#define NS_PSET "http://lv2plug.in/ns/dev/presets#"
#define NS_UI "http://lv2plug.in/ns/extensions/ui#"
#define NS_DC "http://dublincore.org/documents/dcmi-namespace/"
#define NS_LV2 "http://lv2plug.in/ns/lv2core#"
#define NS_STATE "http://lv2plug.in/ns/ext/state#"
#define NS_PSET "http://lv2plug.in/ns/dev/presets#"
#define NS_UI "http://lv2plug.in/ns/extensions/ui#"
using namespace std;
using namespace ARDOUR;
@ -148,23 +149,31 @@ LV2Plugin::init(void* c_plugin, framecnt_t rate)
_data_access_feature.URI = "http://lv2plug.in/ns/ext/data-access";
_path_support_feature.URI = LV2_FILES_PATH_SUPPORT_URI;
_new_file_support_feature.URI = LV2_FILES_NEW_FILE_SUPPORT_URI;
_persist_feature.URI = "http://lv2plug.in/ns/ext/persist";
_persist_feature.data = NULL;
LilvPlugin* plugin = _impl->plugin;
LilvNode* persist_uri = lilv_new_uri(_world.world, _persist_feature.URI);
_supports_persist = lilv_plugin_has_feature(plugin, persist_uri);
lilv_node_free(persist_uri);
LilvNode* state_iface_uri = lilv_new_uri(_world.world, NS_STATE "Interface");
#ifdef lilv_plugin_has_extension_data
_has_state_interface = lilv_plugin_has_extension_data(plugin, state_iface_uri);
lilv_node_free(state_iface_uri);
#else
LilvNode* lv2_extensionData = lilv_new_uri(_world.world, NS_LV2 "extensionData");
LilvNodes* extdatas = lilv_plugin_get_value(plugin, lv2_extensionData);
LILV_FOREACH(nodes, i, extdatas) {
if (lilv_node_equals(lilv_nodes_get(extdatas, i), state_iface_uri)) {
_has_state_interface = true;
break;
}
}
#endif
_features = (LV2_Feature**)malloc(sizeof(LV2_Feature*) * 7);
_features = (LV2_Feature**)malloc(sizeof(LV2_Feature*) * 6);
_features[0] = &_instance_access_feature;
_features[1] = &_data_access_feature;
_features[2] = &_path_support_feature;
_features[3] = &_new_file_support_feature;
_features[4] = &_persist_feature;
_features[5] = _uri_map.feature();
_features[6] = NULL;
_features[4] = _uri_map.feature();
_features[5] = NULL;
LV2_Files_Path_Support* path_support = (LV2_Files_Path_Support*)malloc(
sizeof(LV2_Files_Path_Support));
@ -444,34 +453,34 @@ LV2Plugin::c_ui_type ()
}
int
LV2Plugin::lv2_persist_store_callback(void* host_data,
uint32_t key,
const void* value,
size_t size,
uint32_t type,
uint32_t flags)
LV2Plugin::lv2_state_store_callback(LV2_State_Handle handle,
uint32_t key,
const void* value,
size_t size,
uint32_t type,
uint32_t flags)
{
DEBUG_TRACE(DEBUG::LV2, string_compose(
"persist store %1 (size: %2, type: %3)\n",
"state store %1 (size: %2, type: %3)\n",
_uri_map.id_to_uri(NULL, key),
size,
_uri_map.id_to_uri(NULL, type)));
LV2PersistState* state = (LV2PersistState*)host_data;
LV2State* state = (LV2State*)handle;
state->add_uri(key, _uri_map.id_to_uri(NULL, key));
state->add_uri(type, _uri_map.id_to_uri(NULL, type));
return state->add_value(key, value, size, type, flags);
}
const void*
LV2Plugin::lv2_persist_retrieve_callback(void* host_data,
uint32_t key,
size_t* size,
uint32_t* type,
uint32_t* flags)
LV2Plugin::lv2_state_retrieve_callback(LV2_State_Handle host_data,
uint32_t key,
size_t* size,
uint32_t* type,
uint32_t* flags)
{
LV2PersistState* state = (LV2PersistState*)host_data;
LV2PersistState::Values::const_iterator i = state->values.find(key);
LV2State* state = (LV2State*)host_data;
LV2State::Values::const_iterator i = state->values.find(key);
if (i == state->values.end()) {
warning << "LV2 plugin attempted to retrieve nonexistent key: "
<< _uri_map.id_to_uri(NULL, key) << endmsg;
@ -479,9 +488,9 @@ LV2Plugin::lv2_persist_retrieve_callback(void* host_data,
}
*size = i->second.size;
*type = i->second.type;
*flags = LV2_PERSIST_IS_POD | LV2_PERSIST_IS_PORTABLE; // FIXME
*flags = LV2_STATE_IS_POD | LV2_STATE_IS_PORTABLE; // FIXME
DEBUG_TRACE(DEBUG::LV2, string_compose(
"persist retrieve %1 = %2 (size: %3, type: %4)\n",
"state retrieve %1 = %2 (size: %3, type: %4)\n",
_uri_map.id_to_uri(NULL, key),
i->second.value, *size, *type));
return i->second.value;
@ -583,7 +592,7 @@ LV2Plugin::add_state(XMLNode* root) const
}
}
if (_supports_persist) {
if (_has_state_interface) {
// Create state directory for this plugin instance
cerr << "Create statefile name from ID " << _insert_id << endl;
const std::string state_filename = _insert_id.to_s() + ".rdff";
@ -592,21 +601,23 @@ LV2Plugin::add_state(XMLNode* root) const
cout << "Saving LV2 plugin state to " << state_path << endl;
// Get LV2 Persist extension data from plugin instance
LV2_Persist* persist = (LV2_Persist*)extension_data(
"http://lv2plug.in/ns/ext/persist");
if (!persist) {
// Get LV2 State extension data from plugin instance
LV2_State_Interface* state_iface = (LV2_State_Interface*)extension_data(
"http://lv2plug.in/ns/ext/state#Interface");
if (!state_iface) {
warning << string_compose(
_("Plugin \"%1\% failed to return LV2 persist data"),
_("Plugin \"%1\% failed to return LV2 state interface"),
unique_id());
return;
}
// Save plugin state to state object
LV2PersistState state(_uri_map);
persist->save(_impl->instance->lv2_handle,
&LV2Plugin::lv2_persist_store_callback,
&state);
LV2State state(_uri_map);
state_iface->save(_impl->instance->lv2_handle,
&LV2Plugin::lv2_state_store_callback,
&state,
LV2_STATE_IS_POD|LV2_STATE_IS_PORTABLE,
NULL);
// Write state object to RDFF file
RDFF file = rdff_open(state_path.c_str(), true);
@ -762,21 +773,23 @@ LV2Plugin::set_state(const XMLNode& node, int version)
cout << "LV2 state path " << state_path << endl;
// Get LV2 Persist extension data from plugin instance
LV2_Persist* persist = (LV2_Persist*)extension_data(
"http://lv2plug.in/ns/ext/persist");
if (persist) {
// Get LV2 State extension data from plugin instance
LV2_State_Interface* state_iface = (LV2_State_Interface*)extension_data(
"http://lv2plug.in/ns/ext/state#Interface");
if (state_iface) {
cout << "Loading LV2 state from " << state_path << endl;
RDFF file = rdff_open(state_path.c_str(), false);
LV2PersistState state(_uri_map);
RDFF file = rdff_open(state_path.c_str(), false);
LV2State state(_uri_map);
state.read(file);
persist->restore(_impl->instance->lv2_handle,
&LV2Plugin::lv2_persist_retrieve_callback,
&state);
state_iface->restore(_impl->instance->lv2_handle,
&LV2Plugin::lv2_state_retrieve_callback,
&state,
LV2_STATE_IS_POD|LV2_STATE_IS_PORTABLE,
NULL);
rdff_close(file);
} else {
warning << string_compose(
_("Plugin \"%1\% failed to return LV2 persist data"),
_("Plugin \"%1\% failed to return LV2 state interface"),
unique_id());
}
}