diff options
Diffstat (limited to 'lv2/urid')
| -rw-r--r-- | lv2/urid/manifest.ttl | 9 | ||||
| -rw-r--r-- | lv2/urid/urid.h | 137 | ||||
| -rw-r--r-- | lv2/urid/urid.meta.ttl | 84 | ||||
| -rw-r--r-- | lv2/urid/urid.ttl | 22 |
4 files changed, 252 insertions, 0 deletions
diff --git a/lv2/urid/manifest.ttl b/lv2/urid/manifest.ttl new file mode 100644 index 0000000..772e2b6 --- /dev/null +++ b/lv2/urid/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/urid> + a lv2:Specification ; + lv2:minorVersion 1 ; + lv2:microVersion 4 ; + rdfs:seeAlso <urid.ttl> . + diff --git a/lv2/urid/urid.h b/lv2/urid/urid.h new file mode 100644 index 0000000..a68bc12 --- /dev/null +++ b/lv2/urid/urid.h @@ -0,0 +1,137 @@ +/* + Copyright 2008-2016 David Robillard <http://drobilla.net> + Copyright 2011 Gabriel M. Beddingfield <gabrbedd@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. +*/ + +/** + @defgroup urid URID + @ingroup lv2 + + Features for mapping URIs to and from integers, see + <http://lv2plug.in/ns/ext/urid> for details. + + @{ +*/ + +#ifndef LV2_URID_H +#define LV2_URID_H + +#define LV2_URID_URI "http://lv2plug.in/ns/ext/urid" ///< http://lv2plug.in/ns/ext/urid +#define LV2_URID_PREFIX LV2_URID_URI "#" ///< http://lv2plug.in/ns/ext/urid# + +#define LV2_URID__map LV2_URID_PREFIX "map" ///< http://lv2plug.in/ns/ext/urid#map +#define LV2_URID__unmap LV2_URID_PREFIX "unmap" ///< http://lv2plug.in/ns/ext/urid#unmap + +#define LV2_URID_MAP_URI LV2_URID__map ///< Legacy +#define LV2_URID_UNMAP_URI LV2_URID__unmap ///< Legacy + +#include <stdint.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/** + Opaque pointer to host data for LV2_URID_Map. +*/ +typedef void* LV2_URID_Map_Handle; + +/** + Opaque pointer to host data for LV2_URID_Unmap. +*/ +typedef void* LV2_URID_Unmap_Handle; + +/** + URI mapped to an integer. +*/ +typedef uint32_t LV2_URID; + +/** + URID Map Feature (LV2_URID__map) +*/ +typedef struct { + /** + Opaque pointer to host data. + + This MUST be passed to map_uri() whenever it is called. + Otherwise, it must not be interpreted in any way. + */ + LV2_URID_Map_Handle handle; + + /** + 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)(LV2_URID_Map_Handle handle, + const char* uri); +} LV2_URID_Map; + +/** + URI Unmap Feature (LV2_URID__unmap) +*/ +typedef struct { + /** + Opaque pointer to host data. + + This MUST be passed to unmap() whenever it is called. + Otherwise, it must not be interpreted in any way. + */ + LV2_URID_Unmap_Handle handle; + + /** + 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_Unmap_Handle handle, + LV2_URID urid); +} LV2_URID_Unmap; + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif /* LV2_URID_H */ + +/** + @} +*/ diff --git a/lv2/urid/urid.meta.ttl b/lv2/urid/urid.meta.ttl new file mode 100644 index 0000000..b2a74fa --- /dev/null +++ b/lv2/urid/urid.meta.ttl @@ -0,0 +1,84 @@ +@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#> . +@prefix urid: <http://lv2plug.in/ns/ext/urid#> . + +<http://lv2plug.in/ns/ext/urid> + a doap:Project ; + doap:license <http://opensource.org/licenses/isc> ; + doap:name "LV2 URID" ; + doap:shortdesc "Features for mapping URIs to and from integers." ; + doap:created "2011-07-22" ; + doap:developer <http://lv2plug.in/ns/meta#gabrbedd> ; + doap:maintainer <http://drobilla.net/drobilla#me> ; + doap:release [ + doap:revision "1.4" ; + doap:created "2012-10-14" ; + doap:file-release <http://lv2plug.in/spec/lv2-1.2.0.tar.bz2> ; + dcs:blame <http://drobilla.net/drobilla#me> ; + dcs:changeset [ + dcs:item [ + rdfs:label "Fix typo in urid:unmap documentation." + ] + ] + ] , [ + doap:revision "1.2" ; + 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 "Add feature struct names." + ] , [ + rdfs:label "Merge with unified LV2 package." + ] + ] + ] , [ + doap:revision "1.0" ; + doap:created "2011-11-21" ; + doap:file-release <http://lv2plug.in/spec/lv2-urid-1.0.tar.bz2> ; + dcs:blame <http://drobilla.net/drobilla#me> ; + dcs:changeset [ + dcs:item [ + rdfs:label "Initial release." + ] + ] + ] ; + lv2:documentation """ + +This extension defines a simple mechanism for plugins to map URIs to and from +integers. This is usually used for performance reasons, for example for +processing events with URI types in real-time audio code). Typically, plugins +map URIs to integers for things they "understand" at instantiation time, and +store those values for use in the audio thread without doing any string +comparison. This allows for the extensibility of RDF but with the performance +of integers. + +This extension is intended as an improved and simplified replacement for the +[uri-map](uri-map.html) extension, since the `map` context parameter there has +proven problematic. This extension is functionally equivalent to the uri-map +extension with a NULL context. New implementations are encouraged to use this +extension for URI mapping. + +"""^^lv2:Markdown . + +urid:map + lv2:documentation """ + +To support this feature, the host must pass an LV2_Feature to +LV2_Descriptor::instantiate() with URI LV2_URID__map and data pointed to an +instance of LV2_URID_Map. + +"""^^lv2:Markdown . + +urid:unmap + lv2:documentation """ + +To support this feature, the host must pass an LV2_Feature to +LV2_Descriptor::instantiate() with URI LV2_URID__unmap and data pointed to an +instance of LV2_URID_Unmap. + +"""^^lv2:Markdown . + diff --git a/lv2/urid/urid.ttl b/lv2/urid/urid.ttl new file mode 100644 index 0000000..2c44b56 --- /dev/null +++ b/lv2/urid/urid.ttl @@ -0,0 +1,22 @@ +@prefix lv2: <http://lv2plug.in/ns/lv2core#> . +@prefix owl: <http://www.w3.org/2002/07/owl#> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . +@prefix urid: <http://lv2plug.in/ns/ext/urid#> . + +<http://lv2plug.in/ns/ext/urid> + a owl:Ontology ; + rdfs:label "LV2 URID" ; + rdfs:comment "Features for mapping URIs to and from integers." ; + rdfs:seeAlso <urid.h> , + <urid.meta.ttl> . + +urid:map + a lv2:Feature ; + rdfs:label "map" ; + rdfs:comment "A feature to map URI strings to integer URIDs." . + +urid:unmap + a lv2:Feature ; + rdfs:label "unmap" ; + rdfs:comment "A feature to unmap URIDs back to strings." . + |