4 files changed, 166 insertions, 0 deletions
diff --git a/lv2/data-access/data-access.h b/lv2/data-access/data-access.h
new file mode 100644
index 0000000..f57b1e2
--- /dev/null
+++ b/lv2/data-access/data-access.h
@@ -0,0 +1,69 @@
+/*
+  LV2 Data Access Extension
+  Copyright 2008-2016 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.
+*/
+
+/**
+   @defgroup data-access Data Access
+   @ingroup lv2
+
+   Access to plugin extension_data() for UIs, see
+   <http://lv2plug.in/ns/ext/data-access> for details.
+
+   @{
+*/
+
+#ifndef LV2_DATA_ACCESS_H
+#define LV2_DATA_ACCESS_H
+
+#define LV2_DATA_ACCESS_URI    "http://lv2plug.in/ns/ext/data-access"  ///< http://lv2plug.in/ns/ext/data-access
+#define LV2_DATA_ACCESS_PREFIX LV2_DATA_ACCESS_URI "#"                 ///< http://lv2plug.in/ns/ext/data-access#
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+   The data field of the LV2_Feature for this extension.
+
+   To support this feature the host must pass an LV2_Feature struct to the
+   instantiate method with URI "http://lv2plug.in/ns/ext/data-access"
+   and data pointed to an instance of this struct.
+*/
+typedef struct {
+	/**
+	   A pointer to a method the UI can call to get data (of a type specified
+	   by some other extension) from the plugin.
+
+	   This call never is never guaranteed to return anything, UIs should
+	   degrade gracefully if direct access to the plugin data is not possible
+	   (in which case this function will return NULL).
+
+	   This is for access to large data that can only possibly work if the UI
+	   and plugin are running in the same process.  For all other things, use
+	   the normal LV2 UI communication system.
+	*/
+	const void* (*data_access)(const char* uri);
+} LV2_Extension_Data_Feature;
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif  /* LV2_DATA_ACCESS_H */
+
+/**
+   @}
+*/
diff --git a/lv2/data-access/data-access.meta.ttl b/lv2/data-access/data-access.meta.ttl
new file mode 100644
index 0000000..3184110
--- /dev/null
+++ b/lv2/data-access/data-access.meta.ttl
@@ -0,0 +1,77 @@
+@prefix da: <http://lv2plug.in/ns/ext/data-access#> .
+@prefix dcs: <http://ontologi.es/doap-changeset#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/data-access>
+	a doap:Project ;
+	rdfs:seeAlso <data-access.h> ;
+	doap:license <http://opensource.org/licenses/isc> ;
+	doap:name "LV2 Data Access" ;
+	doap:shortdesc "Provides access to plugin extension data." ;
+	doap:created "2008-00-00" ;
+	doap:developer <http://drobilla.net/drobilla#me> ;
+	doap:release [
+		doap:revision "1.6" ;
+		doap:created "2012-04-17" ;
+		doap:file-release <http://lv2plug.in/spec/lv2-1.0.0.tar.bz2> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Merge with unified LV2 package."
+			]
+		]
+	] , [
+		doap:revision "1.4" ;
+		doap:created "2011-11-21" ;
+		doap:file-release <http://lv2plug.in/spec/lv2-data-access-1.4.tar.bz2> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Update packaging."
+			] , [
+				rdfs:label "Improve documentation."
+			]
+		]
+	] , [
+		doap:revision "1.2" ;
+		doap:created "2011-05-26" ;
+		doap:file-release <http://lv2plug.in/spec/lv2-data-access-1.2.tar.bz2> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Add build system for installation."
+			] , [
+				rdfs:label "Switch to ISC license."
+			]
+		]
+	] , [
+		doap:revision "1.0" ;
+		doap:created "2010-10-04" ;
+		doap:file-release <http://lv2plug.in/spec/lv2-data-access-1.0.tar.gz> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Initial release."
+			]
+		]
+	] ;
+	lv2:documentation """
+
+This extension defines a feature, LV2_Extension_Data_Feature, which provides
+access to LV2_Descriptor::extension_data() for plugin UIs or other potentially
+remote users of a plugin.
+
+Note that the use of this extension by UIs violates the important principle of
+UI/plugin separation, and is potentially a source of many problems.
+Accordingly, **use of this extension is highly discouraged**, and plugins
+should not expect hosts to support it, since it is often impossible to do so.
+
+To support this feature the host must pass an LV2_Feature struct to
+LV2_Descriptor::extension_data() with URI LV2_DATA_ACCESS_URI and data pointed
+to an instance of LV2_Extension_Data_Feature.
+
+"""^^lv2:Markdown .
+
diff --git a/lv2/data-access/data-access.ttl b/lv2/data-access/data-access.ttl
new file mode 100644
index 0000000..0185cd0
--- /dev/null
+++ b/lv2/data-access/data-access.ttl
@@ -0,0 +1,11 @@
+@prefix da: <http://lv2plug.in/ns/ext/data-access#> .
+@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/data-access>
+	a lv2:Feature ;
+	rdfs:label "data access" ;
+	rdfs:comment "A feature that provides access to plugin extension data." ;
+	rdfs:seeAlso <data-access.h> ,
+		<data-access.meta.ttl> .
+
diff --git a/lv2/data-access/manifest.ttl b/lv2/data-access/manifest.ttl
new file mode 100644
index 0000000..9585a5e
--- /dev/null
+++ b/lv2/data-access/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/data-access>
+	a lv2:Specification ;
+	lv2:minorVersion 1 ;
+	lv2:microVersion 6 ;
+	rdfs:seeAlso <data-access.ttl> .
+