diff options
Diffstat (limited to 'lv2/ns/ext/pui')
| l--------- | lv2/ns/ext/pui/ext.pc.in | 1 | ||||
| -rw-r--r-- | lv2/ns/ext/pui/manifest.ttl | 8 | ||||
| -rw-r--r-- | lv2/ns/ext/pui/pui.h | 374 | ||||
| -rw-r--r-- | lv2/ns/ext/pui/pui.ttl | 282 | ||||
| l--------- | lv2/ns/ext/pui/waf | 1 | ||||
| l--------- | lv2/ns/ext/pui/wscript | 1 |
6 files changed, 667 insertions, 0 deletions
diff --git a/lv2/ns/ext/pui/ext.pc.in b/lv2/ns/ext/pui/ext.pc.in new file mode 120000 index 0000000..82b50df --- /dev/null +++ b/lv2/ns/ext/pui/ext.pc.in @@ -0,0 +1 @@ +../../../../ext.pc.in
\ No newline at end of file diff --git a/lv2/ns/ext/pui/manifest.ttl b/lv2/ns/ext/pui/manifest.ttl new file mode 100644 index 0000000..1229118 --- /dev/null +++ b/lv2/ns/ext/pui/manifest.ttl @@ -0,0 +1,8 @@ +@prefix lv2: <http://lv2plug.in/ns/lv2core#>. +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>. + +<http://lv2plug.in/ns/ext/pui> + a lv2:Specification; + lv2:minorVersion 0; + lv2:microVersion 1; + rdfs:seeAlso <pui.ttl>. diff --git a/lv2/ns/ext/pui/pui.h b/lv2/ns/ext/pui/pui.h new file mode 100644 index 0000000..caa7deb --- /dev/null +++ b/lv2/ns/ext/pui/pui.h @@ -0,0 +1,374 @@ +/************************************************************************ + * + * Plugin UI extension for LV2 + * + * Copyright (C) 2006-2011 Lars Luthman <mail@larsluthman.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 pui.h C API for the LV2 UI extension <http://lv2plug.in/ns/ext/pui>. + + This file specifies a C API for communication between an LV2 host and an + LV2 UI. The interface is similar to the one used for actual LV2 plugins. + + The entry point is the function lv2ui_descriptor(). +*/ + +#ifndef LV2_PUI_H +#define LV2_PUI_H + +#include <lv2.h> + +/** The URI of this extension (note this is not the same as the prefix). */ +#define LV2_PUI_URI "http://lv2plug.in/ns/ext/pui" + +/** The numerical ID returned by LV2_PUI_Host_Descriptor::port_index() for + invalid port symbols. */ +#define LV2_PUI_INVALID_PORT_INDEX ((uint32_t)-1) + +/** The full URI for the pui:floatControl PortProtocol. */ +#define LV2_PUI_FLOAT_CONTROL_URI "http://lv2plug.in/ns/ext/pui#floatControl" + +/** The full URI for the pui:floatPeakRMS PortProtocol. */ +#define LV2_PUI_FLOAT_PEAK_RMS_URI "http://lv2plug.in/ns/ext/pui#floatPeakRMS" + +#ifdef __cplusplus +extern "C" { +#endif + +/** + A data type that is used to pass peak and RMS values for a period of + audio data at an input or output port to an UI, using port_event. See the + documentation for pui:floatPeakRMS for details about how and when this + should be done. +*/ +typedef struct _LV2_PUI_Peak_RMS_Data { + + /** + The start of the measurement period. This is just a running counter that + must not be interpreted as any sort of global frame position. It should + only be interpreted relative to the starts of other measurement periods + in port_event() calls to the same plugin instance. + + This counter is allowed to overflow, in which case it should just wrap + around. + */ + uint32_t period_start; + + /** + The size of the measurement period, in the same units as period_start. + */ + uint32_t period_size; + + /** + The peak value for the measurement period. This should be the maximal + value for abs(sample) over all the samples in the period. + */ + float peak; + + /** + The RMS value for the measurement period. This should be the root mean + square value of the samples in the period, equivalent to + sqrt((pow(sample1, 2) + pow(sample2, 2) + ... + pow(sampleN, 2)) / N) + where N is period_size. + */ + float rms; + +} LV2_PUI_Peak_RMS_Data; + +/** + A pointer to a widget or other type of UI. + The actual type is defined by the type of the UI defined in the RDF data. + 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* LV2_PUI_Widget; + +/** + Handle for 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 may use it to reference internal + instance data. +*/ +typedef void* LV2_PUI_Handle; + +/** + Handle for host functions and data provided to a UI. + An object of this type is passed to the UI's instantiate() function, and the + UI must in turn pass it as the first parameter to the callbacks in + LV2_PUI_Host_Descriptor. The host may use it to reference internal data, such + as the plugin instance that the UI is associated with. The UI MUST NOT + interpret the value of an LV2_PUI_Host_Handle in any way. +*/ +typedef void* LV2_PUI_Host_Handle; + +/** + Host-provided functions that the UI can use to control the plugin instance. + + A pointer to an object of this type is passed to the lv2ui_descriptor() + function. + + The host MUST provide non-NULL values for all the function pointers. +*/ +typedef struct _LV2_PUI_Host_Descriptor { + + /** + Send data to one of the 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 port_protocol parameter. + + The @c port_protocol parameter MUST be a numeric ID for a + pui:PortProtocol. Numeric IDs for PortProtocols are retrieved using the + port_protocol_id() function. + + The @c buffer is only valid during the time of this function call, so if + the host wants to keep it for later use it has to copy the contents to an + internal buffer. + + @param host_handle The @c host_handle that was passed to the UI's + instantiate() function. + @param port_index The index of the port that the data should be written + to, as returned by port_index(). + @param buffer_size The size of the data pointed to by @c buffer, in + bytes. + @param port_protocol The numeric ID of the Port Protocol to use, + as returned by port_protocol_id(). + */ + void (*write_port)(LV2_PUI_Host_Handle host_handle, + uint32_t port_index, + uint32_t buffer_size, + uint32_t port_protocol, + void const* buffer); + + /** + Return the numerical index for a port. + This index is used when writing data to ports using write_port() and whe + receiving data using port_event(). If @c port_symbol is not a valid port + symbol for @c plugin the host it MUST return + LV2_PUI_INVALID_PORT_INDEX. For performance reasons it may be a good idea + to cache port indices in the UI at instantiation time. + + @param host_handle The LV2_PUI_Host_Handle that was passed to the UI's + instantiate() function. + @param port_symbol The port's symbol, as defined in the RDF data for + the plugin. + */ + uint32_t (*port_index)(LV2_PUI_Host_Handle host_handle, + char const* port_symbol); + + /** + Subscribe to updates for a port. + This means that the host will call the UI's port_event() function when + the port value changes (as defined by the PortProtocol). + + Calling this function with the same @c port_index and @c port_protocol + as an already active subscription has no effect. + + @param host_handle The @c host_handle that was passed to the UI's + instantiate() function. + @param port_index The index of the port, as returned by port_index(). + @param port_protocol The numeric ID of the PortProtocol, as + returned by port_protocol_id(). + */ + void (*subscribe_to_port)(LV2_PUI_Host_Handle host_handle, + uint32_t port_index, + uint32_t port_protocol, + const LV2_Feature* const* features); + + /** + Unsubscribe from updates for a port. + This means that the host will cease calling calling port_event() when + the port value changes. + + Calling this function with a @c port_index and @c port_protocol that + does not refer to an active port subscription has no effect. + + @param host_handle The @c host_handle that was passed to the UI's + instantiate() function. + @param port_index The index of the port, as returned by port_index(). + @param port_protocol The numeric ID of the PortProtocol, as + returned by port_protocol_id(). + */ + void (*unsubscribe_from_port)(LV2_PUI_Host_Handle host_handle, + uint32_t port_index, + uint32_t port_protocol, + const LV2_Feature* const* features); + + +} LV2_PUI_Host_Descriptor; + +/** + This struct contains the implementation of an UI. A pointer to an + object of this type is returned by the lv2ui_descriptor() function. +*/ +typedef struct _LV2_PUI_Descriptor { + + /** + The URI for this UI (not for the plugin it controls). + */ + char const* 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 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 that + references this shared object file, with trailing separator (e.g. '/'). + + @param host_descriptor A pointer to an object that contains function + pointers that the UI instance should use to control the plugin + instance. This pointer MUST be valid until cleanup() is called for this + UI instance. + + @param host_handle A handle that the host may use to reference internal + data. It MUST be passed as the first parameter to the function + pointers in @c host_descriptor, and MUST NOT be interpreted in any other + way by the UI. + + @param features A NULL-terminated 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; @c features will probably not be the same array as the one the + plugin host passes to a plugin. + */ + LV2_PUI_Handle (*instantiate)( + struct _LV2_PUI_Descriptor const* descriptor, + char const* plugin_uri, + char const* bundle_path, + LV2_PUI_Host_Descriptor const* host_descriptor, + LV2_PUI_Host_Handle host_handle, + LV2_Feature const* const* features); + + /** + Return the widget pointer for the UI object. + This MUST return the same value during the entire lifetime of the UI + object. + */ + LV2_PUI_Widget (*get_widget)(LV2_PUI_Handle ui); + + /** + Destroy the UI object and the associated widget. + The host must not try to access the widget after calling this function. + */ + void (*cleanup)(LV2_PUI_Handle ui); + + /** + Notify the UI that something has happened to a subscribed port. + + This is called by the host when something happens at a plugin port that + has been subscribed to using + LV2_PUI_Host_Descriptor::add_port_subscription(). + + 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. + + @param ui A handle for the UI object. + @param port_index The index of the port that has changed, as returned by + LV2_PUI_Host_Descriptor::port_index(). + @param buffer_size The size of the data buffer in bytes. + @param port_protocol The format of the data buffer, as returned by + LV2_PUI_Host_Descriptor::port_protocol_id(). + @param buffer A pointer to the data buffer. + */ + void (*port_event)(LV2_PUI_Handle ui, + uint32_t port_index, + uint32_t buffer_size, + uint32_t port_protocol, + void const* buffer); + + /** + Return a data structure associated with an extension URI. + + This facility can be used by extensions to extend the LV2_PUI_Descriptor + API. This function adheres to the same rules as + LV2_Descriptor::extension_data, except it applies to UIs rather than + plugins. + */ + void const* (*extension_data)(char const* uri); + +} LV2_PUI_Descriptor; + +typedef void* LV2_PUI_Lib_Data; + +/** + Descriptor for a plugin UI library. + + Each plugin UI shared library has exactly one of these objects, accessed + via the lv2_pui_lib_descriptor() function in that library. +*/ +typedef struct { + /** + Opaque library data which must be passed as the first parameter to + all the methods of this struct. + */ + LV2_PUI_Lib_Data lib_data; + + void (*cleanup)(LV2_PUI_Lib_Data lib_data); + + /** + Prototype for UI accessor function. + + This function follows the same rules as lv2_descriptor(), except it + applies to UIs rather than plugins. + */ + LV2_PUI_Descriptor const* (*pui_descriptor)(LV2_PUI_Lib_Data lib_data, + uint32_t index); + +} LV2_PUI_Lib_Descriptor; + +/** + Prototype for UI library accessor function. + + This is the entry point for a plugin UI library. Hosts load this symbol + from the library and call this function to obtain a library descriptor which + can be used to access all the UIs contained in this library. The returned + object must not be destroyed (with LV2_PUI_Lib_Descriptor::cleanup()) until + all UIs loaded from that library have been destroyed. +*/ +LV2_PUI_Lib_Descriptor const* lv2_pui_lib_descriptor( + const char* bundle_path, + LV2_Feature const* const* features); + +/** + Type of the lv2_pui_lib_descriptor() function in a UI library. +*/ +typedef LV2_PUI_Lib_Descriptor const* (*LV2_PUI_Lib_Descriptor_Func)( + const char* bundle_path, + LV2_Feature const* const* features); + +#ifdef __cplusplus +} +#endif + +#endif /* LV2_PUI_H */ diff --git a/lv2/ns/ext/pui/pui.ttl b/lv2/ns/ext/pui/pui.ttl new file mode 100644 index 0000000..c035e56 --- /dev/null +++ b/lv2/ns/ext/pui/pui.ttl @@ -0,0 +1,282 @@ +# LV2 Plugin UI Extension +# Copyright (C) 2010-2011 Lars Luthman <mail@larsluthman.net> +# +# Based on lv2.ttl, which is +# Copyright (C) 2006-2008 Steve Harris, David Robillard +# +# This extension should be considered a replacement for the earlier +# in-process UI extension with the URI <http://lv2plug.in/ns/extensions/ui>. +# Hosts and plugins that used that extension should use this one instead. +# The earlier in-process UI extension is not compatible with LV2 revision 3 +# and later and may break in subtle ways. +# +# 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 doap: <http://usefulinc.com/ns/doap#> . +@prefix foaf: <http://xmlns.com/foaf/0.1/> . +@prefix lv2: <http://lv2plug.in/ns/lv2core#>. +@prefix pui: <http://lv2plug.in/ns/ext/pui#>. +@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . + +<http://lv2plug.in/ns/ext/pui> + a lv2:Specification ; + doap:license <http://usefulinc.com/doap/licenses/mit> ; + doap:name "LV2 UI" ; + doap:shortdesc "Generic UI interface for LV2 plugins." ; + doap:release [ + doap:revision "0.1" ; + doap:created "2011-03-26" + ] ; + doap:maintainer [ + a foaf:Person ; + foaf:name "Lars Luthman" ; + foaf:mbox <mailto:mail@larsluthman.net> + ] ; + lv2:documentation """ +<p>This extension defines an interface that can be used to create UIs for +plugins. The UIs are code that reside in shared object files in an LV2 +bundle and are referenced in the RDF data using the triples:</p> +<pre class="turtle-code"> +@prefix pui: <http://lv2plug.in/ns/ext/pui#> . +<http://example.org/my-ui> a pui:Gtk2UI ; + lv2:appliesTo <http://example.org/my-plugin> ; + pui:binary <my-ui.so> . +</pre> +<p>... where <code>http://example.org/my-plugin</code> is the URI of the plugin, +<code>http://example.org/my-ui</code> is the URI of the plugin UI and +<code>my-ui.so</code> 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.</p> + +<p>A UI MUST specify its class in the RDF data and the class MUST be a proper +subclass of pui:UI, in this case pui:Gtk2UI. The class defines what type the +UI is, e.g. what graphics toolkit it uses. There are no UI classes defined in +this extension, those are specified separately (and anyone can define their +own).</p> + +<p>It's entirely 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. It is also possible to have one UI that +works with several different plugins.</p> + +<p>UIs should also be written in such a way that the host may load several +instances of an UI, or different UIs, and use them with the same plugin +instance.</p> + +<p>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 do not have to be the same. There are many valid reasons +for having the plugin and the UI in different processes, or even on different +machines. This means that you can <strong>not</strong> 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 the header pui.h is +all you can expect to work.</p> +""" . + +pui:UI + a rdfs:Class ; + rdfs:subClassOf lv2:Feature ; + rdfs:label "UI" ; + lv2:documentation """ +<p>The class which represents an LV2 plugin UI. +</p> + +<p>To be used by a host a UI MUST have at least the following properties:</p> +<ul> +<li>rdf:type (with object a proper subclass of pui:UI)</li> +<li>doap:name (one without language tag)</li> +<li>lv2:binary (with a shared object file as object)</li> +<li>lv2:appliesTo (with a LV2 plugin as object)</li> +</ul> + +<p>The rdf:type of an UI is used by the host to decide whether it supports the +UI and how to handle the LV2_PUI_Widget object that is returned by the UIs +get_widget() function. For example, a type of pui:Gtk2UI might tell the +host that LV2_PUI_Widget is a pointer to an object of a type defined in the +Gtk+ library. No UI types are defined in this extension, that is intentionally +left for other extensions.</p> + +<p>The doap:name property should be at most a few words in length using title +capitalization, e.g. "Flashy Mixer GUI". Use lv2:documentation for more +detailed descriptions.</p> + +<p>UIs may have optional or required features, specified using lv2:optionalFeature +or lv2:requiredFeature. The same rules apply here as for plugins; a host MUST +pass the LV2_Feature objects for all features it supports to the UI's +instantiate() function, a host SHOULD NOT try to instantiate an UI if it +doesn't support all of its required features, and an UI MUST fail to +instantiate if the host doesn't pass all required features to instantiate(). +</p> + +<p>For details about the C API used to load UIs, see the file pui.h. +</p> +""" . + +pui:PortProtocol + a rdfs:Class ; + rdfs:subClassOf lv2:Feature ; + rdfs:label "Port protocol" ; + lv2:documentation """ +<p>A PortProtocol defines a certain way of communicating port data between UI +and plugin. PortProtocols can be specified in additional extensions, and +those extensions MUST specify: +</p> + +<ol> +<li>Which plugin port types the buffer type is valid for</li> +<li>When the host should call port_event() in LV2_PUI_Descriptor</li> +<li>The format of the data in the buffer passed to port_event()</li> +<li>The format of the data in the buffer passed to write_port()</li> +<li>What happens when the UI calls write_port() in LV2_PUI_Host_Descriptor</li> +<li>What data (if any) should be passed in the LV2_Feature data pointer. </li> +</ol> + +<p>For an example, see pui:floatControl or pui:floatPeakRMS. +</p> + +<p>PortProtocol is a subclass of lv2:Feature, so UIs use lv2:optionalFeature and +lv2:requiredFeature to specify which PortProtocols they want to use. +</p> +""" . + +pui:floatControl + a pui:PortProtocol ; + rdfs:label "Floating point value" ; + lv2:documentation """ +<p>The rules (see pui:PortProtocol) for this port protocol are:</p> +<ol> +<li>This PortProtocol is valid for ports with the type lv2:ControlPort.</li> +<li>The host SHOULD call port_event() as soon as possible when the port value + has changed, but the plugin MUST NOT depend on a call for every change or + the timing of the calls. However, the host MUST do the calls in the same + order that the value changes occur in.</li> +<li>The format of the data in the buffer passed to port_event() is a single + float, and the buffer size is sizeof(float).</li> +<li>Same as 3.</li> +<li>The host SHOULD change the port value as soon as possible when write_port() + is called, but the UI MUST NOT depend on a change for every call or the + timing of the changes. However, the host MUST do the changes in the same + order that the function calls occur in.</li> +<li>The data pointer in the LV2_Feature object for this feature should be + NULL.</li> +</ol> +""" . + +pui:floatPeakRMS + a pui:PortProtocol ; + rdfs:label "Peak and RMS for a period of audio data" ; + lv2:documentation """ +<p>This port protocol defines a way for the host to send continuous peak +and RMS measurements of the audio signal at a certain port to the UI. The +intended use is visualisation, e.g. an animated meter widget that shows +the level of the audio input or output.</p> + +<p>A contiguous sequence of audio samples for which a single peak value +and a single RMS value have been computed is called a <em>measurement +period</em>.</p> + +<p>The rules (see pui:PortProtocol) for this port protocol are:</p> +<ol> +<li>This PortProtocol is valid for ports with the type lv2:AudioPort.</li> +<li>The host SHOULD call port_event() at regular intervals. The measurement + periods used for calls to port_event() for the same port SHOULD be + contiguous (i.e. the measurement period for one call should begin right + after the end of the measurement period for the previous call ends) unless + the UI has removed and re-added the port subscription between those calls. + However, UIs MUST NOT depend on either the regularity of the calls or the + contiguity of the measurement periods; hosts may change the call rate + or skip calls for performance or other reasons. Measurement periods for + different calls to port_event() for the same port MUST NOT overlap.</li> +<li>The format of the data in the buffer passed to port_event() is a single + LV2_PUI_Peak_RMS_Data object, and the buffer size is + sizeof(LV2_PUI_Peak_RMS_Data).</li> +<li>The UI MUST NOT call write_port() with the ID for this port protocol as + the port_protocol parameter.</li> +<li>The host MUST ignore any write_port() calls with the ID for this port + protocol as the port_protocol parameter.</li> +<li>The data pointer in the LV2_Feature object for this feature should be + NULL.</li> +</ol> +""" . + +pui:events + a pui:PortProtocol ; + rdfs:label "Event buffer" ; + lv2:documentation """ +<ol> +<li>This PortProtocol is valid for ports with the type ev:EventPort.</li> +<li>The host MUST call port_event() whenever there is an event in an input port + prior to the plugin instance's run() function is called, and whenever there + is an event in an output port after run() has been called. The UI MUST NOT + depend on the timing of the calls. However, the host MUST do the calls in + the same order that the events occur in. The host is allowed and encouraged + to bundle multiple events into a single port_event() call if it improves + performance.</li> +<li>The data buffer passed to port_event() is an LV2_Event_Buffer, as specified + in the Event extension. The stamp_type MUST be ignored. The frames and + subframes fields of every event in the buffer MUST be ignored. Events with + type 0 (reference counted events) MUST be ignored.</li> +<li>The data buffer passed to write_event() is an LV2_Event_Buffer, as + specified in the Event extension. The stamp_type MUST be ignored. The + frames and subframes fields of every event in the buffer MUST be + ignored. The host MUST NOT pass events with type 0 (references) unless the + UI supports the feature "http://lv2plug.in/ns/ext/event".</li> +<li>The host MUST pass all the events in the buffer to the plugin instance's + event port in the same order, but the plugin and the UI MUST NOT depend on + the timing of the events, or on whether they are all sent to the plugin in + the same run() call or distributed over multiple calls.</li> +<li>The data pointer in the LV2_Feature object for this feature should be + NULL.</li> +</ol> +""" . + +pui:Gtk2UI + a rdfs:Class ; + rdfs:subClassOf pui:UI ; + rdfs:label "Gtk+ UI" ; + lv2:documentation """ +<p>The class which represents a Gtk+ UI. For a successfully created instance of +an UI of this class, the get_widget() function MUST return a pointer to a valid +GtkWidget object compatible with Gtk+ version 2.0. The host MUST ensure that +the Gtk+ library has been initialised and that the Glib main loop is running +before an UI of this type is instantiated.</p> + +<p>Unless otherwise specified by extensions, all function pointers in +LV2_PUI_Descriptor may only be called from the thread that runs the Glib main +loop.</p> +""" . + +pui:noHostResize + a lv2:Feature ; + rdfs:label "No host resize" ; + lv2:documentation """ +<p>This Feature should only be used with UIs.</p> + +<p>When this Feature is active the host SHOULD NOT resize the UI widget to any +other size than its natural size, which the host should be able to determine +via the API of whatever toolkit the UI is implemented in. However, the UI MUST +NOT break if the widget is resized to another size. This Feature can be used +for example when the widget uses a fixed-size pixmap interface.</p> + +<p>The data pointer in the LV2_Feature object for this Feature should be set to +NULL.</p> +""" . diff --git a/lv2/ns/ext/pui/waf b/lv2/ns/ext/pui/waf new file mode 120000 index 0000000..b955110 --- /dev/null +++ b/lv2/ns/ext/pui/waf @@ -0,0 +1 @@ +../../../../waf
\ No newline at end of file diff --git a/lv2/ns/ext/pui/wscript b/lv2/ns/ext/pui/wscript new file mode 120000 index 0000000..ec20a77 --- /dev/null +++ b/lv2/ns/ext/pui/wscript @@ -0,0 +1 @@ +../../../../ext.wscript
\ No newline at end of file |