aboutsummaryrefslogtreecommitdiffstats
path: root/ns/ext/dynmanifest
diff options
context:
space:
mode:
Diffstat (limited to 'ns/ext/dynmanifest')
-rw-r--r--ns/ext/dynmanifest/dynmanifest.h144
-rw-r--r--ns/ext/dynmanifest/dynmanifest.ttl122
l---------ns/ext/dynmanifest/ext.pc.in1
-rw-r--r--ns/ext/dynmanifest/lv2-dynmanifest.doap.ttl43
-rw-r--r--ns/ext/dynmanifest/manifest.ttl9
l---------ns/ext/dynmanifest/waf1
l---------ns/ext/dynmanifest/wscript1
7 files changed, 321 insertions, 0 deletions
diff --git a/ns/ext/dynmanifest/dynmanifest.h b/ns/ext/dynmanifest/dynmanifest.h
new file mode 100644
index 0000000..56d829e
--- /dev/null
+++ b/ns/ext/dynmanifest/dynmanifest.h
@@ -0,0 +1,144 @@
+/*
+ Dynamic manifest specification for LV2
+ Copyright 2008-2011 Stefano D'Angelo <zanga.mail@gmail.com>
+
+ 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 dynmanifest.h
+ C header for the LV2 Dynamic Manifest extension
+ <http://lv2plug.in/ns/ext/dynmanifest>.
+ Revision: 1.1
+*/
+
+#ifndef LV2_DYN_MANIFEST_H_INCLUDED
+#define LV2_DYN_MANIFEST_H_INCLUDED
+
+#include <stdio.h>
+
+#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
+
+#define LV2_DYN_MANIFEST_URI "http://lv2plug.in/ns/ext/dynmanifest"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ Dynamic manifest generator handle.
+
+ This handle indicates a particular status of a dynamic manifest generator.
+ The host MUST NOT attempt to interpret it and, unlikely LV2_Handle, it is
+ NOT even valid to compare this to NULL. The dynamic manifest generator MAY
+ use it to reference internal data.
+*/
+typedef void * LV2_Dyn_Manifest_Handle;
+
+/**
+ Generate the dynamic manifest.
+
+ @param handle Pointer to an uninitialized dynamic manifest generator handle.
+
+ @param features NULL terminated array of LV2_Feature structs which represent
+ the features the host supports. The dynamic manifest generator may refuse to
+ (re)generate the dynamic manifest if required features are not found here
+ (however hosts SHOULD NOT use this as a discovery mechanism, instead of
+ reading the static manifest file). This array must always exist; if a host
+ has no features, it MUST pass a single element array containing NULL.
+
+ @return 0 on success, otherwise a non-zero error code. The host SHOULD
+ evaluate the result of the operation by examining the returned value and
+ MUST NOT try to interpret the value of handle.
+*/
+int lv2_dyn_manifest_open(LV2_Dyn_Manifest_Handle * handle,
+ const LV2_Feature *const * features);
+
+/**
+ Fetch a "list" of subject URIs described in the dynamic manifest.
+
+ The dynamic manifest generator has to fill the resource only with the needed
+ triples to make the host aware of the "objects" it wants to expose. For
+ example, if the plugin library exposes a regular LV2 plugin, it should
+ output only a triple like the following:
+
+ <http://www.example.com/plugin/uri> a lv2:Plugin .
+
+ The objects that are elegible for exposure are those that would need to be
+ represented by a subject node in a static manifest.
+
+ @param handle Dynamic manifest generator handle.
+
+ @param fp FILE * identifying the resource the host has to set up for the
+ dynamic manifest generator. The host MUST pass a writable, empty resource to
+ this function, and the dynamic manifest generator MUST ONLY perform write
+ operations on it at the end of the stream (e.g., using only fprintf(),
+ fwrite() and similar).
+
+ @return 0 on success, otherwise a non-zero error code.
+*/
+int lv2_dyn_manifest_get_subjects(LV2_Dyn_Manifest_Handle handle,
+ FILE * fp);
+
+/**
+ Function that fetches data related to a specific URI.
+
+ The dynamic manifest generator has to fill the resource with data related to
+ object represented by the given URI. For example, if the library exposes a
+ regular LV2 plugin whose URI, as retrieved by the host using
+ lv2_dyn_manifest_get_subjects() is http://www.example.com/plugin/uri, it
+ should output something like:
+
+ <pre>
+ <http://www.example.com/plugin/uri>
+ a lv2:Plugin ;
+ doap:name "My Plugin" ;
+ lv2:binary <mylib.so> ;
+ etc:etc "..." .
+ </pre>
+
+ @param handle Dynamic manifest generator handle.
+
+ @param fp FILE * identifying the resource the host has to set up for the
+ dynamic manifest generator. The host MUST pass a writable resource to this
+ function, and the dynamic manifest generator MUST ONLY perform write
+ operations on it at the current position of the stream (e.g. using only
+ fprintf(), fwrite() and similar).
+
+ @param uri URI to get data about (in the "plain" form, i.e., absolute URI
+ without Turtle prefixes).
+
+ @return 0 on success, otherwise a non-zero error code.
+*/
+int lv2_dyn_manifest_get_data(LV2_Dyn_Manifest_Handle handle,
+ FILE * fp,
+ const char * uri);
+
+/**
+ Function that ends the operations on the dynamic manifest generator.
+
+ This function SHOULD be used by the dynamic manifest generator to perform
+ cleanup operations, etc.
+
+ Once this function is called, referring to handle will cause undefined
+ behavior.
+
+ @param handle Dynamic manifest generator handle.
+*/
+void lv2_dyn_manifest_close(LV2_Dyn_Manifest_Handle handle);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LV2_DYN_MANIFEST_H_INCLUDED */
diff --git a/ns/ext/dynmanifest/dynmanifest.ttl b/ns/ext/dynmanifest/dynmanifest.ttl
new file mode 100644
index 0000000..591cb11
--- /dev/null
+++ b/ns/ext/dynmanifest/dynmanifest.ttl
@@ -0,0 +1,122 @@
+# LV2 Dynamic Manifest Extension
+# Copyright 2008-2011 Stefano D'Angelo <zanga.mail@gmail.com>
+#
+# 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.
+
+@prefix dman: <http://lv2plug.in/ns/ext/dynmanifest#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
+@prefix owl: <http://www.w3.org/2002/07/owl#> .
+@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
+
+<http://lv2plug.in/ns/ext/dynmanifest>
+ a doap:Project ,
+ lv2:Specification ;
+ doap:license <http://opensource.org/licenses/isc-license> ;
+ doap:name "LV2 Dynamic Manifest" ;
+ doap:homepage <http://naspro.atheme.org> ;
+ doap:created "2009-06-13" ;
+ doap:shortdesc "An LV2-based specification for dynamic data generation." ;
+ doap:programming-language "C" ;
+ doap:release [
+ doap:revision "1.1" ;
+ doap:created "2011-11-17"
+ ] ;
+ doap:maintainer [
+ a foaf:Person ;
+ foaf:name "Stefano D'Angelo"
+ ] ;
+ lv2:documentation """
+<p>The LV2 API, on its own, cannot be used to write plugin libraries where data
+is dynamically generated at runtime (e.g. API wrappers), since LV2 requires
+needed information to be provided in one or more static data (RDF) files. This
+API addresses this limitation by extending the LV2 API.</p>
+
+<p>To detect that a plugin library implements a dynamic manifest generator,
+the host checks its static manifest for a description like:</p>
+
+<pre class="turtle-code">
+&lt;http://example.org/my-dynamic-manifest&gt;
+ a dman:DynManifest ;
+ lv2:binary &lt;mydynmanifest.so&gt; .
+</pre>
+
+<p>To load the data, the host loads the library
+(e.g. <code>mydynmanifest.so</code>) as usual and fetches the dynamic Turtle
+data from it using this API.</p>
+
+<p>The host is allowed to request regeneration of the dynamic manifest multiple
+times, and the plugin library is expected to provide updated data if/when
+possible. All data and references provided via this API before the last
+regeneration of the dynamic manifest is to be considered invalid by the host,
+including plugin descriptors whose URIs were discovered using this API.</p>
+
+<h3>Accessing Data</h3>
+
+<p>Whenever a host wants to access data using this API, it could:</p>
+
+<ol>
+<li>Call lv2_dyn_manifest_open().</li>
+<li>Create a FILE for functions to write data to (e.g. using tmpfile()).</li>
+<li>Get a <q>list</q> of exposed subject URIs using
+ lv2_dyn_manifest_get_subjects().</li>
+<li>Call lv2_dyn_manifest_get_data() for each URI of interest to
+ get the data related to that URI (which can be written to any FILE).</li>
+<li>Call lv2_dyn_manifest_close().</li>
+<li>Parse the content of the FILE(s).</li>
+<li>Free/delete/unlink the FILE(s).</li>
+</ol>
+
+<p>Each call to the above mentioned dynamic manifest functions MUST write a
+complete, valid Turtle document (including all needed prefix definitions) to
+the output FILE.</p>
+
+<p>Each call to lv2_dyn_manifest_open() causes the (re)generation of the
+dynamic manifest data, and invalidates all data fetched before the call.</p>
+
+<p>In case the plugin library uses this same API to access other dynamic
+manifests, it MUST implement some mechanism to avoid potentially endless loops
+(such as A loads B, B loads A, etc.) and, in case such a loop is detected, the
+operation MUST fail. For this purpose, use of a static boolean flag is
+suggested.</p>
+
+<h3>Threading Rules</h3>
+
+<p>All of the functions defined by this specification belong to the Discovery
+class.</p>
+""" .
+
+dman:DynManifest
+ a rdfs:Class ;
+ rdfs:subClassOf lv2:Resource ;
+ rdfs:label "Dynamic manifest generator" ;
+ rdfs:subClassOf [
+ a owl:Restriction ;
+ owl:onProperty lv2:binary ;
+ owl:minCardinality 1 ;
+ rdfs:comment """A DynManifest has at least 1 lv2:binary.
+The binary must be a library with at least the functions described in
+lv2_dyn_manifest.h implemented.
+"""
+ ] ;
+ rdfs:comment """
+The class which represents a dynamic manifest generator.
+
+There MUST NOT be any instances of :DynManifest in the generated manifest.
+
+All relative URIs in the generated data MUST be relative to the base path
+that would be used to parse a normal LV2 manifest (the bundle path).
+""" .
diff --git a/ns/ext/dynmanifest/ext.pc.in b/ns/ext/dynmanifest/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/dynmanifest/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in \ No newline at end of file
diff --git a/ns/ext/dynmanifest/lv2-dynmanifest.doap.ttl b/ns/ext/dynmanifest/lv2-dynmanifest.doap.ttl
new file mode 100644
index 0000000..f47c381
--- /dev/null
+++ b/ns/ext/dynmanifest/lv2-dynmanifest.doap.ttl
@@ -0,0 +1,43 @@
+@prefix dcs: <http://ontologi.es/doap-changeset#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://drobilla.net/drobilla#me>
+ a foaf:Person ;
+ foaf:name "David Robillard" ;
+ foaf:homepage <http://drobilla.net/> ;
+ foaf:mbox <mailto:d@drobilla.net> ;
+ rdfs:seeAlso <http://drobilla.net/drobilla> .
+
+<http://lv2plug.in/ns/ext/dynmanifest>
+ a doap:Project ;
+ doap:license <http://opensource.org/licenses/isc-license> ;
+ doap:name "LV2 Dynamic Manifest" ;
+ doap:homepage <http://naspro.atheme.org> ;
+ doap:created "2009-06-13" ;
+ doap:shortdesc "An LV2-based specification for dynamic data generation." ;
+ doap:programming-language "C" ;
+ doap:developer [
+ a foaf:Person ;
+ foaf:name "Stefano D'Angelo"
+ ] ;
+ doap:release [
+ doap:revision "1.1" ;
+ doap:created "2011-11-17" ;
+ dcs:blame <http://drobilla.net/drobilla#me> ;
+ dcs:changeset [
+ dcs:item [
+ rdfs:label "Improve documentation."
+ ]
+ ]
+ ] , [
+ doap:revision "1.0" ;
+ doap:created "2010-04-10" ;
+ dcs:blame <http://drobilla.net/drobilla#me> ;
+ dcs:changeset [
+ dcs:item [
+ rdfs:label "Initial release."
+ ]
+ ]
+ ] .
diff --git a/ns/ext/dynmanifest/manifest.ttl b/ns/ext/dynmanifest/manifest.ttl
new file mode 100644
index 0000000..6718092
--- /dev/null
+++ b/ns/ext/dynmanifest/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/dynmanifest>
+ a lv2:Specification ;
+ lv2:minorVersion 1 ;
+ lv2:microVersion 1 ;
+ rdfs:seeAlso <dynmanifest.ttl> ,
+ <lv2-dynmanifest.doap.ttl> .
diff --git a/ns/ext/dynmanifest/waf b/ns/ext/dynmanifest/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/dynmanifest/waf
@@ -0,0 +1 @@
+../../../waf \ No newline at end of file
diff --git a/ns/ext/dynmanifest/wscript b/ns/ext/dynmanifest/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/dynmanifest/wscript
@@ -0,0 +1 @@
+../../../ext.wscript \ No newline at end of file
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-06 14:37:01 +0000