diff options
Diffstat (limited to 'extensions')
| -rw-r--r-- | extensions/ui.lv2/manifest.ttl | 7 | ||||
| -rw-r--r-- | extensions/ui.lv2/ui.h | 241 | ||||
| -rw-r--r-- | extensions/ui.lv2/ui.ttl | 217 | ||||
| -rw-r--r-- | extensions/units.lv2/manifest.ttl | 7 | ||||
| -rw-r--r-- | extensions/units.lv2/units.ttl | 350 |
5 files changed, 822 insertions, 0 deletions
diff --git a/extensions/ui.lv2/manifest.ttl b/extensions/ui.lv2/manifest.ttl new file mode 100644 index 0000000..2c20933 --- /dev/null +++ b/extensions/ui.lv2/manifest.ttl @@ -0,0 +1,7 @@ +@prefix lv2: <http://lv2plug.in/ns/lv2core#> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . + +<http://lv2plug.in/ns/ext/ui> + a lv2:Specification ; + rdfs:seeAlso <ui.ttl> . + diff --git a/extensions/ui.lv2/ui.h b/extensions/ui.lv2/ui.h new file mode 100644 index 0000000..cedb895 --- /dev/null +++ b/extensions/ui.lv2/ui.h @@ -0,0 +1,241 @@ +/* LV2 UI Extension
+ * Copyright (C) 2006-2008 Lars Luthman <lars.luthman@gmail.com>
+ * Copyright (C) 2009-2010 David Robillard <d@drobilla.net>
+ *
+ * Based on lv2.h, which was
+ * Copyright (C) 2000-2002 Richard W.E. Furse, Paul Barton-Davis,
+ * Stefan Westerfeld
+ * Copyright (C) 2006 Steve Harris, David Robillard.
+ *
+ * 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 2.1 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 library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+ * USA.
+ *
+ */
+
+/** @file
+ * C header for the LV2 UI extension <http://lv2plug.in/ns/extensions/ui>.
+ */
+
+#ifndef LV2_UI_H
+#define LV2_UI_H
+
+#include "lv2.h"
+
+#define LV2_UI_URI "http://lv2plug.in/ns/extensions/ui"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/** A pointer to some widget or other type of UI handle.
+ The actual type is defined by the type URI of the UI.
+ All the functionality provided by this extension is toolkit
+ independent, the host only needs to pass the necessary callbacks and
+ display the widget, if possible. Plugins may have several UIs, in various
+ toolkits. */
+typedef void* LV2UI_Widget;
+
+
+/** A pointer to a particular instance of a UI.
+ It is valid to compare this to NULL (0 for C++) but otherwise the
+ host MUST not attempt to interpret it. The UI plugin may use it to
+ reference internal instance data. */
+typedef void* LV2UI_Handle;
+
+
+/** A pointer to a particular plugin controller, provided by the host.
+ It is valid to compare this to NULL (0 for C++) but otherwise the
+ UI plugin MUST not attempt to interpret it. The host may use it to
+ reference internal instance data. */
+typedef void* LV2UI_Controller;
+
+
+/** The type of the host-provided function that the UI can use to
+ send data to a plugin's input ports. The @c buffer parameter must point
+ to a block of data, @c buffer_size bytes large. The contents of this buffer
+ and what the host should do with it depends on the value of the @c format
+ parameter.
+
+ The @c format parameter should either be 0 or a numeric ID for a "Transfer
+ mechanism". Transfer mechanisms are Features and may be defined in
+ meta-extensions. They specify how to translate the data buffers passed
+ to this function to input data for the plugin ports. If a UI wishes to
+ write data to an input port, it must list a transfer mechanism Feature
+ for that port's class as an optional or required feature (depending on
+ whether the UI will work without being able to write to that port or not).
+ The only exception is when the UI wants to write single float values to
+ input ports of the class lv2:ControlPort, in which case @c buffer_size
+ should always be 4, the buffer should always contain a single IEEE-754
+ float, and @c format should be 0.
+
+ The numeric IDs for the transfer mechanisms are provided by a
+ URI-to-integer mapping function provided by the host, using the URI Map
+ feature <http://lv2plug.in/ns/ext/uri-map> with the map URI
+ "http://lv2plug.in/ns/extensions/ui". Thus a UI that requires transfer
+ mechanism features also requires the URI Map feature, but this is
+ implicit - the UI does not have to list the URI map feature as a required
+ or optional feature in it's RDF data.
+
+ An UI MUST NOT pass a @c format parameter value (except 0) that has not
+ been returned by the host-provided URI mapping function for a
+ host-supported transfer mechanism feature URI.
+
+ The UI MUST NOT try to write to a port for which there is no specified
+ transfer mechanism, or to an output port. The UI is responsible for
+ allocating the buffer and deallocating it after the call.
+*/
+typedef void (*LV2UI_Write_Function)(LV2UI_Controller controller,
+ uint32_t port_index,
+ uint32_t buffer_size,
+ uint32_t format,
+ const void* buffer);
+
+
+/** This struct contains the implementation of a UI. A pointer to an
+ object of this type is returned by the lv2ui_descriptor() function.
+*/
+typedef struct _LV2UI_Descriptor {
+
+ /** The URI for this UI (not for the plugin it controls). */
+ const char* URI;
+
+ /** Create a new UI object and return a handle to it. This function works
+ similarly to the instantiate() member in LV2_Descriptor.
+
+ @param descriptor The descriptor for the UI that you want to instantiate.
+ @param plugin_uri The URI of the plugin that this UI will control.
+ @param bundle_path The path to the bundle containing the RDF data file
+ that references this shared object file, including the
+ trailing '/'.
+ @param write_function A function provided by the host that the UI can
+ use to send data to the plugin's input ports.
+ @param controller A handle for the plugin instance that should be passed
+ as the first parameter of @c write_function.
+ @param widget A pointer to an LV2UI_Widget. The UI will write a
+ widget pointer to this location (what type of widget
+ depends on the RDF class of the UI) that will be the
+ main UI widget.
+ @param features An array of LV2_Feature pointers. The host must pass
+ all feature URIs that it and the UI supports and any
+ additional data, just like in the LV2 plugin
+ instantiate() function. Note that UI features and plugin
+ features are NOT necessarily the same, they just share
+ the same data structure - this will probably not be the
+ same array as the one the plugin host passes to a
+ plugin.
+ */
+ LV2UI_Handle (*instantiate)(const struct _LV2UI_Descriptor* descriptor,
+ const char* plugin_uri,
+ const char* bundle_path,
+ LV2UI_Write_Function write_function,
+ LV2UI_Controller controller,
+ LV2UI_Widget* widget,
+ const LV2_Feature* const* features);
+
+
+ /** Destroy the UI object and the associated widget. The host must not try
+ to access the widget after calling this function.
+ */
+ void (*cleanup)(LV2UI_Handle ui);
+
+ /** Tell the UI that something interesting has happened at a plugin port.
+ What is interesting and how it is written to the buffer passed to this
+ function is defined by the @c format parameter, which has the same
+ meaning as in LV2UI_Write_Function. The only exception is ports of the
+ class lv2:ControlPort, for which this function should be called
+ when the port value changes (it does not have to be called for every
+ single change if the host's UI thread has problems keeping up with the
+ thread the plugin is running in), @c buffer_size should be 4, the buffer
+ should contain a single IEEE-754 float, and @c format should be 0.
+
+ By default, the host should only call this function for input ports of
+ the lv2:ControlPort class. However, the default setting can be modified
+ by using the following URIs in the UI's RDF data:
+ <pre>
+ uiext:portNotification
+ uiext:noPortNotification
+ uiext:plugin
+ uiext:portIndex
+ </pre>
+ For example, if you want the UI with uri
+ <code><http://my.pluginui></code> for the plugin with URI
+ <code><http://my.plugin></code> to get notified when the value of the
+ output control port with index 4 changes, you would use the following
+ in the RDF for your UI:
+ <pre>
+ <http://my.pluginui> uiext:portNotification [ uiext:plugin <http://my.plugin> ;
+ uiext:portIndex 4 ] .
+ </pre>
+ and similarly with <code>uiext:noPortNotification</code> if you wanted
+ to prevent notifications for a port for which it would be on by default
+ otherwise. The UI is not allowed to request notifications for ports of
+ types for which no transfer mechanism is specified, if it does it should
+ be considered broken and the host should not load it.
+
+ The @c buffer is only valid during the time of this function call, so if
+ the UI wants to keep it for later use it has to copy the contents to an
+ internal buffer.
+
+ This member may be set to NULL if the UI is not interested in any
+ port events.
+ */
+ void (*port_event)(LV2UI_Handle ui,
+ uint32_t port_index,
+ uint32_t buffer_size,
+ uint32_t format,
+ const void* buffer);
+
+ /** Returns a data structure associated with an extension URI, for example
+ a struct containing additional function pointers. Avoid returning
+ function pointers directly since standard C/C++ has no valid way of
+ casting a void* to a function pointer. This member may be set to NULL
+ if the UI is not interested in supporting any extensions. This is similar
+ to the extension_data() member in LV2_Descriptor.
+ */
+ const void* (*extension_data)(const char* uri);
+
+} LV2UI_Descriptor;
+
+
+
+/** A plugin UI programmer must include a function called "lv2ui_descriptor"
+ with the following function prototype within the shared object
+ file. This function will have C-style linkage (if you are using
+ C++ this is taken care of by the 'extern "C"' clause at the top of
+ the file). This function will be accessed by the UI host using the
+ @c dlsym() function and called to get a LV2UI_UIDescriptor for the
+ wanted plugin.
+
+ Just like lv2_descriptor(), this function takes an index parameter. The
+ index should only be used for enumeration and not as any sort of ID number -
+ the host should just iterate from 0 and upwards until the function returns
+ NULL or a descriptor with an URI matching the one the host is looking for.
+*/
+const LV2UI_Descriptor* lv2ui_descriptor(uint32_t index);
+
+
+/** This is the type of the lv2ui_descriptor() function. */
+typedef const LV2UI_Descriptor* (*LV2UI_DescriptorFunction)(uint32_t index);
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif
diff --git a/extensions/ui.lv2/ui.ttl b/extensions/ui.lv2/ui.ttl new file mode 100644 index 0000000..496b625 --- /dev/null +++ b/extensions/ui.lv2/ui.ttl @@ -0,0 +1,217 @@ +# LV2 UI Extension +# Copyright (C) 2006-2008 Lars Luthman <lars.luthman@gmail.com> +# Copyright (C) 2009-2010 David Robillard <d@drobilla.net> +# +# Permission is hereby granted, free of charge, to any person obtaining a +# copy of this software and associated documentation files (the "Software"), +# to deal in the Software without restriction, including without limitation +# the rights to use, copy, modify, merge, publish, distribute, sublicense, +# and/or sell copies of the Software, and to permit persons to whom the +# Software is furnished to do so, subject to the following conditions: +# +# The above copyright notice and this permission notice shall be included +# in all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR +# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, +# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +# OTHER DEALINGS IN THE SOFTWARE. + +@prefix ui: <http://lv2plug.in/ns/extensions/ui#> . +@prefix lv2: <http://lv2plug.in/ns/lv2core#> . +@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . +@prefix owl: <http://www.w3.org/2002/07/owl#> . +@prefix xsd: <http://www.w3.org/2001/XMLSchema#> . +@prefix doap: <http://usefulinc.com/ns/doap#> . +@prefix foaf: <http://xmlns.com/foaf/0.1/> . + +<http://lv2plug.in/ns/extensions/ui> a lv2:Specification ; + doap:license <http://usefulinc.com/doap/licenses/mit> ; + doap:name "LV2 UI" ; + doap:release [ + doap:revision "2pre" ; + doap:created "2010-05-10" + ] ; + doap:maintainer [ + a foaf:Person ; + foaf:name "Lars Luthman" ; + foaf:mbox <mailto:lars.luthman@gmail.com> + ] , [ + a foaf:Person ; + foaf:name "David Robillard" ; + foaf:homepage <http://drobilla.net/> ; + rdfs:seeAlso <http://drobilla.net/drobilla.rdf> + ] ; + rdfs:comment """ +This extension defines an interface that can be used in LV2 plugins and hosts +to create UIs for plugins. The UIs are similar to plugins and reside in shared object +files in an LV2 bundle. UIs are associated with a plugin in RDF using the triples +<pre> +@prefix ui: <http://lv2plug.in/ns/extensions/ui#> . + +<http://my.plugin> ui:ui <http://my.pluginui> . +<http://my.pluginui> a ui:GtkUI ; + ui:binary <myui.so> . +</pre> +where <http://my.plugin> is the URI of the plugin, +<http://my.pluginui> is the URI of the plugin UI and <myui.so> +is the relative URI to the shared object file. + +While it is possible to have the plugin UI and the plugin in the same shared +object file it is probably a good idea to keep them separate so that hosts +that don't want UIs don't have to load the UI code. A UI MUST specify its +class in the RDF data (ui:GtkUI in the above example). The class defines what +type the UI is, e.g. what graphics toolkit it uses. Any type of UI class can +be defined separately from this extension. + +(Note: the prefix above is used throughout this file for the same URI) + +It is possible to have multiple UIs for the same plugin, or to have the UI +for a plugin in a different bundle from the actual plugin - this way people +other than the plugin author can write plugin UIs independently without +editing the original plugin bundle. + +Note that the process that loads the shared object file containing the UI +code and the process that loads the shared object file containing the actual +plugin implementation are not necessarily the same process (and not even +necessarily on the same machine). This means that plugin and UI code can +<b>not</b> use singletons and global variables and expect them to refer to +the same objects in the UI and the actual plugin. The function callback +interface defined in this header is the only method of communication between +UIs and plugin instances (extensions may define more, though this is +discouraged unless absolutely necessary since the significant benefits of +network transparency and serialisability are lost). + +Since the LV2 specification itself allows for extensions that may add new +functionality that could be useful to control with a UI, this extension +allows for meta-extensions that can extend the interface between the UI and +the host. These extensions mirror the extensions used for plugins - there are +required and optional "features" that you declare in the RDF data for the UI as +<pre> +<http://my.pluginui> lv2:requiredFeature <http://my.feature> . +<http://my.pluginui> lv2:optionalFeature <http://my.feature> . +</pre> +The rules for a UI with a required or optional feature are identical to those +of lv2:Plugin instances: if a UI declares a feature as required, the host is +NOT allowed to load it unless it supports that feature; and if it does support +a feature, it MUST pass an appropriate LV2_Feature struct to the UI's +instantiate() method. These features may be used to specify how to pass +specific types of data between the UI and the plugin port buffers +(see LV2UI_Write_Function for details). + +UIs written to this specification do not need to be threadsafe - the +functions defined below may only be called in the same thread the UI +main loop is running in. + +Note that this UI extension is NOT a lv2:Feature. There is no way for a +plugin to know whether the host that loads it supports UIs or not, and +the plugin must always work without the UI (although it may be rather +useless unless it has been configured using the UI in a previous session). +From the plugin perspective, control from a UI is the same as control +from anywhere else (e.g. the host, the user): via ports. + +A UI does not have to be a graphical widget, it could just as well be a +server listening for OSC input or an interface to some sort of hardware +device, depending on the RDF class of the UI. +""" . + + +ui:UI a rdfs:Class ; + rdfs:subClassOf lv2:Resource ; + rdfs:label "LV2 UI" ; + rdfs:comment "A UI for an LV2 plugin" . + +ui:GtkUI a rdfs:Class ; + rdfs:subClassOf ui:UI ; + rdfs:comment """ +A UI where the LV2_Widget is a pointer to a Gtk+ 2.0 compatible GtkWidget, +and the host guarantees that the Gtk+ library has been initialised and the +Glib main loop is running before an UI of this type is instantiated.""" . + +ui:makeSONameResident a lv2:Feature ; + rdfs:comment """ +This feature is ELF specific - it should only be used by UIs that +use the ELF file format for the UI shared object files (e.g. on Linux). +If it is required by an UI the UI should also list a number of SO names +(shared object names) for libraries that the UI shared object +depends on and that may not be unloaded during the lifetime of the host +process, using the predicate @c ui:residentSONames, like this: +<pre> +<http://my.pluginui> ui:residentSONames "libgtkmm-2.4.so.1", "libfoo.so.0" +</pre> +The host MUST then make sure that the shared libraries with the given ELF +SO names are not unloaded when the plugin UI is, but stay loaded during +the entire lifetime of the host process. On Linux this can be accomplished +by calling dlopen() on the shared library file with that SO name and never +calling a matching dlclose(). However, if a plugin UI requires the +@c ui:makeSONameResident feature, it MUST ALWAYS be safe for the host to +just never unload the shared object containing the UI implementation, i.e. +act as if the UI required the @c ui:makeResident feature instead. Thus +the host only needs to find the shared library files corresponding to the +given SO names if it wants to save RAM by unloading the UI shared object +file when it is no longer needed. The data pointer for the LV2_Feature for +this feature should always be set to NULL. +"""^^lv2:basicXHTML . + +ui:noUserResize a lv2:Feature ; + rdfs:comment """ +If a UI requires this feature it indicates that it does not make sense +to let the user resize the main widget, and the host should prevent that. +This feature may not make sense for all UI types. The data pointer for the +LV2_Feature for this feature should always be set to NULL. +""" . + +ui:fixedSize a lv2:Feature ; + rdfs:comment """ +If a UI requires this feature it indicates the same thing as +ui:noUserResize, and additionally it means that the UI will not resize +the main widget on its own - it will always remain the same size (e.g. a +pixmap based GUI). This feature may not make sense for all UI types. +The data pointer for the LV2_Feature for this feature should always be set +to NULL. +""" . + +ui:PortNotification a rdfs:Class ; + rdfs:subClassOf [ + a owl:Restriction ; + owl:onProperty ui:plugin ; + owl:someValuesFrom lv2:Plugin ; + owl:cardinality 1 ; + rdfs:comment """ +A PortNotification MUST have exactly one ui:plugin which is a lv2:Plugin. +""" ] , [ + a owl:Restriction ; + owl:onProperty ui:portIndex ; + owl:someValuesFrom xsd:decimal ; + owl:cardinality 1 ; + rdfs:comment """ +A PortNotification MUST have exactly one ui:portIndex which is an xsd:decimal. +""" ] ; + rdfs:comment "Port Notification" . + +ui:portNotification a rdf:Property ; + rdfs:domain ui:UI ; + rdfs:range ui:PortNotification ; + rdfs:comment """ +Indicates that a UI should receive notification (via port_event on +LV2UI_Descriptor) when a particular port's value changes. +""" . + +ui:plugin a rdf:Property ; + rdfs:domain ui:PortNotification ; + rdfs:range lv2:Plugin ; + rdfs:comment """ +The plugin a portNotification applies to. +""" . + +ui:portIndex a rdf:Property ; + rdfs:domain ui:PortNotification ; + rdfs:range xsd:decimal ; + rdfs:comment """ +The index of the port a portNotification applies to. +""" . + diff --git a/extensions/units.lv2/manifest.ttl b/extensions/units.lv2/manifest.ttl new file mode 100644 index 0000000..6af241d --- /dev/null +++ b/extensions/units.lv2/manifest.ttl @@ -0,0 +1,7 @@ +@prefix lv2: <http://lv2plug.in/ns/lv2core#> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . + +<http://lv2plug.in/ns/ext/units> + a lv2:Specification ; + rdfs:seeAlso <units.ttl> . + diff --git a/extensions/units.lv2/units.ttl b/extensions/units.lv2/units.ttl new file mode 100644 index 0000000..52e20f6 --- /dev/null +++ b/extensions/units.lv2/units.ttl @@ -0,0 +1,350 @@ +# LV2 Units Extension +# Copyright (C) 2007 Steve Harris +# Copyright (C) 2009 David Robillard +# +# Permission is hereby granted, free of charge, to any person obtaining a +# copy of this software and associated documentation files (the "Software"), +# to deal in the Software without restriction, including without limitation +# the rights to use, copy, modify, merge, publish, distribute, sublicense, +# and/or sell copies of the Software, and to permit persons to whom the +# Software is furnished to do so, subject to the following conditions: +# +# The above copyright notice and this permission notice shall be included +# in all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR +# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, +# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +# OTHER DEALINGS IN THE SOFTWARE. + +@prefix units: <http://lv2plug.in/ns/extensions/units#> . +@prefix lv2: <http://lv2plug.in/ns/lv2core#> . +@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . +@prefix doap: <http://usefulinc.com/ns/doap#> . +@prefix foaf: <http://xmlns.com/foaf/0.1/> . + +<http://lv2plug.in/ns/extensions/units> + a lv2:Specification ; + doap:created "2007-02-06" ; + doap:homepage <http://lv2plug.in/ns/extensions/units> ; + doap:release [ + doap:revision "5" ; + doap:created "2009-11-10" + ] ; + doap:maintainer [ + a foaf:Person ; + rdfs:seeAlso <http://plugin.org.uk/swh.xrdf> ; + foaf:homepage <http://plugin.org.uk/> ; + foaf:mbox_sha1sum "44bc4fed584a2d1ac8fc55206db67656165d67fd" ; + foaf:name "Steve Harris" + ], [ + a foaf:Person ; + rdfs:seeAlso <http://drobilla.net/drobilla.rdf> ; + foaf:homepage <http://drobilla.net/> ; + foaf:name "David Robillard" + ] ; + doap:name "LV2 Units extension" ; + rdfs:comment """ +This extension defines a number of units for use in audio processing. + +For example, to say that the port use the gain unit defined as units:db (decibels): +<pre> +@prefix : <http://lv2plug.in/ns/extensions/units#> . + +lv2:port [ + a lv2:ControlRateInputPort ; + lv2:datatype lv2:Float ; + lv2:index 0 ; + lv2:symbol "gain" ; + lv2:name "gain" ; + :unit :db +] +</pre> + +Using the same form, plugins may also specify one-off units inline, to give +better display hints to hosts: +<pre> +lv2:port [ + a lv2:ControlRateInputPort ; + lv2:datatype lv2:Float ; + lv2:index 0 ; + lv2:symbol "frob" ; + lv2:name "frob level" ; + units:unit [ + a units:NonSIUnit ; + units:name "frobnication" ; + units:symbol "fr" ; + units:render "%f f" + ] +] +</pre> +Units are defined by a number of properties: + +<dl> +<dt>units:name</dt> +<dd>A display name for the unit (eg. decibels)</dd> +<dt>units:symbol</dt> +<dd>The abbreviated symbol for the unit (eg. dB)</dd> +<dt>units:render</dt> +<dd>A printf(3) string to be used to render the numerical value (eg. \"%f dB\")</dd> +<dt>units:conversion</dt> +<dd>Defines a conversion into another unit, commonly the SI unit for the +unit class (eg. units:conversion [ units:to units:m ; units:factor 1000 ]). +conversions are expressed as either factors (multiplicand for the conversion) +or offsets (addend for the conversion).</dd> +</dl> +""" ^^ lv2:basicXHTML . + +units:Unit a rdfs:Class ; + rdfs:comment "A unit for LV2 port data" . + +units:unit + a rdf:Property ; + rdfs:domain lv2:Port ; + rdfs:range units:Unit ; + rdfs:comment "Relates a port to the unit of its data" . + +units:s a units:Unit ; + units:conversion [ + units:factor 0.0166666666 ; + units:to units:min + ] ; + units:name "second" ; + units:prefixConversion [ + units:factor 1000 ; + units:to units:ms + ] ; + units:render "%f s" ; + units:symbol "s" . + +units:ms a units:Unit ; + units:name "millisecond" ; + units:prefixConversion [ + units:factor 0.001 ; + units:to units:s + ] ; + units:render "%f ms" ; + units:symbol "ms" . + +units:min a units:Unit ; + units:conversion [ + units:factor 60.0 ; + units:to units:s + ] ; + units:name "minute" ; + units:render "%f mins" ; + units:symbol "min" . + +units:bar a units:Unit ; + units:name "bar" ; + units:render "%f bars" ; + units:symbol "bars" . + +units:beat a units:Unit ; + units:name "beat" ; + units:render "%f beats" ; + units:symbol "beats" . + +units:m a units:Unit ; + units:conversion [ + units:factor 39.37 ; + units:to units:inch + ] ; + units:name "metre" ; + units:prefixConversion [ + units:factor 100 ; + units:to units:cm + ], [ + units:factor 1000 ; + units:to units:mm + ], [ + units:factor 0.001 ; + units:to units:km + ] ; + units:render "%f m" ; + units:symbol "m" . + +units:cm a units:Unit ; + units:conversion [ + units:factor 0.3937 ; + units:to units:inch + ] ; + units:name "centimetre" ; + units:prefixConversion [ + units:factor 0.01 ; + units:to units:m + ], [ + units:factor 10 ; + units:to units:mm + ], [ + units:factor 0.00001 ; + units:to units:km + ] ; + units:render "%f cm" ; + units:symbol "cm" . + +units:mm a units:Unit ; + units:conversion [ + units:factor 0.03937 ; + units:to units:inch + ] ; + units:name "millimetre" ; + units:prefixConversion [ + units:factor 0.001 ; + units:to units:m + ], [ + units:factor 0.1 ; + units:to units:cm + ], [ + units:factor 0.000001 ; + units:to units:km + ] ; + units:render "%f mm" ; + units:symbol "mm" . + +units:km a units:Unit ; + units:conversion [ + units:factor 0.62138818 ; + units:to units:mile + ] ; + units:name "kilometre" ; + units:prefixConversion [ + units:factor 1000 ; + units:to units:m + ], [ + units:factor 100000 ; + units:to units:cm + ], [ + units:factor 1000000 ; + units:to units:mm + ] ; + units:render "%f km" ; + units:symbol "km" . + +units:inch a units:Unit ; + units:conversion [ + units:factor 2.54 ; + units:to units:cm + ] ; + units:name "inch" ; + units:render "%f\"" ; + units:symbol "in" . + +units:mile a units:Unit ; + units:conversion [ + units:factor 1.6093 ; + units:to units:km + ] ; + units:name "mile" ; + units:render "%f mi" ; + units:symbol "mi" . + +units:db a units:Unit ; + units:name "decibel" ; + units:render "%f dB" ; + units:symbol "dB" . + +units:pc a units:Unit ; + units:conversion [ + units:factor 0.01 ; + units:to units:coef + ] ; + units:name "percent" ; + units:render "%f%%" ; + units:symbol "%" . + +units:coef a units:Unit ; + units:conversion [ + units:factor 100 ; + units:to units:pc + ] ; + units:name "coefficient" ; + units:render "* %f" ; + units:symbol "" . + +units:hz a units:Unit ; + units:name "hertz" ; + units:prefixConversion [ + units:factor 0.001 ; + units:to units:khz + ], [ + units:factor 0.000001 ; + units:to units:mhz + ] ; + units:render "%f Hz" ; + units:symbol "Hz" . + +units:khz a units:Unit ; + units:name "kilohertz" ; + units:prefixConversion [ + units:factor 1000 ; + units:to units:hz + ], [ + units:factor 0.001 ; + units:to units:mhz + ] ; + units:render "%f kHz" ; + units:symbol "kHz" . + +units:mhz a units:Unit ; + units:name "megahertz" ; + units:prefixConversion [ + units:factor 1000000 ; + units:to units:hz + ], [ + units:factor 0.001 ; + units:to units:khz + ] ; + units:render "%f MHz" ; + units:symbol "MHz" . + +units:bpm a units:Unit ; + units:name "beats per minute" ; + units:prefixConversion [ + units:factor 0.0166666666 ; + units:to units:hz + ] ; + units:render "%f BPM" ; + units:symbol "BPM" . + +units:oct a units:Unit ; + units:conversion [ + units:factor 12.0 ; + units:to units:semitone12TET + ] ; + units:name "octaves" ; + units:render "%f octaves" ; + units:symbol "oct" . + +units:cent a units:Unit ; + units:conversion [ + units:factor 0.01 ; + units:to units:semitone12TET + ] ; + units:name "cent" ; + units:render "%f ct" ; + units:symbol "ct" . + +units:semitone12TET a units:Unit ; + units:conversion [ + units:factor 0.083333333 ; + units:to units:oct + ] ; + units:name "semitone" ; + units:render "%f semi" ; + units:symbol "semi" . + +units:degree a units:Unit ; + units:name "degree" ; + units:render "%f deg" ; + units:symbol "deg" . + +units:midiNote a units:Unit ; + units:name "MIDI note" ; + units:render "MIDI note %d" ; + units:symbol "note" . + |