[SCM] calf/master: + Monosynth: display non-bandlimited versions of waveforms + LV2: Elven compatibility fixes
js at users.alioth.debian.org
js at users.alioth.debian.org
Tue May 7 15:37:05 UTC 2013
The following commit has been merged in the master branch:
commit b0f61481989795b98e0edabe64475ecdf313b5ed
Author: kfoltman <kfoltman at 78b06b96-2940-0410-b7fc-879d825d01d8>
Date: Fri Mar 28 19:28:02 2008 +0000
+ Monosynth: display non-bandlimited versions of waveforms
+ LV2: Elven compatibility fixes
git-svn-id: https://calf.svn.sourceforge.net/svnroot/calf/trunk@137 78b06b96-2940-0410-b7fc-879d825d01d8
diff --git a/src/calf/lv2_ui.h b/src/calf/lv2_ui.h
index 881d096..a6c9e18 100644
--- a/src/calf/lv2_ui.h
+++ b/src/calf/lv2_ui.h
@@ -1,357 +1,357 @@
-/************************************************************************
- *
- * In-process UI extension for LV2
- *
- * Copyright (C) 2006-2008 Lars Luthman <lars.luthman at gmail.com>
- *
- * Based on lv2.h, which was
- *
- * Copyright (C) 2000-2002 Richard W.E. Furse, Paul Barton-Davis,
- * Stefan Westerfeld
- * Copyright (C) 2006 Steve Harris, Dave 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
- This extension defines an interface that can be used in LV2 plugins and
- hosts to create UIs for plugins. The UIs are plugins that reside in
- shared object files in an LV2 bundle and are referenced in the RDF data
- using the triples (Turtle shown)
-<pre>
- @@prefix uiext: <http://lv2plug.in/ns/extensions/ui#> .
- <http://my.plugin> uiext:ui <http://my.pluginui> .
- <http://my.plugin> a uiext:GtkUI .
- <http://my.pluginui> uiext: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. In this case the class is
- uiext:GtkUI, which is the only class defined by this extension.
-
- (Note: the prefix above is used throughout this file for the same URI)
-
- 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.
-
- 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 does 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 _not_ 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 all you can expect to work.
-
- Since the LV2 specification itself allows for extensions that may add
- new types of data and configuration parameters that plugin authors may
- want 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> uiext:requiredFeature <http://my.feature> .
- <http://my.pluginui> uiext:optionalFeature <http://my.feature> .
-</pre>
- These predicates have the same semantics as lv2:requiredFeature and
- lv2:optionalFeature - if a UI is declaring a feature as required, the
- host is NOT allowed to load it unless it supports that feature, and if it
- does support a feature (required or optional) it MUST pass that feature's
- URI and any additional data (specified by the meta-extension that defines
- the feature) to the UI's instantiate() function.
-
- These features may be used to specify how to pass data between the UI
- and the plugin port buffers - see LV2UI_Write_Function for details.
-
- There are two features defined in this extension that hosts may want to
- implement:
-<pre>
- uiext:makeResident
- uiext:makeSONameResident
-</pre>
- If the first feature, @c uiext:makeResident, is required by a UI the host
- MUST never unload the shared library containing the UI implementation
- during the lifetime of the host process (e.g. never calling dlclose() on
- Linux). This feature may be needed by e.g. a uiext:GtkUI that registers
- its own Glib types using g_type_register_static() - if it gets unloaded
- and then loaded again the type registration will break, since there is no
- way to unregister the types when the library is unloaded.
-
- The second feature, @c uiext:makeSONameResident, is ELF specific
- and 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 uiext:residentSONames, like this:
-<pre>
- <http://my.pluginui> uiext: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 uiext: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 uiext: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.
-
- UIs written to this specification do not need to be threadsafe - the
- functions defined below may only be called in the same thread as 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).
-
- 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.
-*/
-
-#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, e.g. if
- "<http://example.org/someui> a uiext:GtkUI", this is a pointer
- to a GtkWidget compatible with GTK+ 2.0 and the UI can expect the GTK+
- main loop to be running during the entire lifetime of all instances of that
- 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, but uiext:GtkUI is the only type that is defined in this
- extension. */
-typedef void* LV2UI_Widget;
-
-
-/** A pointer to some host data required to instantiate a UI.
- Like the type of the widget, the actual type of this pointer is defined by
- the type URI of the UI. Hosts can use this to pass toolkit specific data
- to a UI it needs to instantiate (type map, drawing context, etc). For the
- uiext:GtkUI type this should be NULL. */
-typedef void* LV2UI_Host_Data;
-
-
-/** This handle indicates 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;
-
-
-/** This handle indicates a particular plugin instance, 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 plugin instance data. */
-typedef void* LV2UI_Controller;
-
-
-/** This is 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
- will depend on the class of the port it's being sent to, and the transfer
- mechanism specified for that port class.
-
- 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 ports of the class lv2:ControlPort, for which @c buffer_size
- should always be 4 and the buffer should always contain a single IEEE-754
- float.
-
- 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. A function
- pointer of this type will be provided to the UI by the host in the
- instantiate() function.
-
- An UI may list multiple transfer mechanisms for the same port type.
- To tell the host which mechanism is to be used, it passes an integer ID
- for the mechanism in the @c format parameter. This ID is retrieved from
- 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 MUST also require the URI Map feature. A @c format
- value of 0 is a special case that always means that the buffer should
- be interpreted as a single IEEE-754 float, and may only be written to
- a control port.
-
- 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.
-*/
-typedef void (*LV2UI_Write_Function)(LV2UI_Controller controller,
- uint32_t port_index,
- uint32_t buffer_size,
- uint32_t format,
- const void* buffer);
-
-
-/** */
-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 plugin supports and any
- additional data, just like in the LV2 plugin
- instantiate() function.
- */
- 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 transfer mechanism extensions (see
- 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 and the
- buffer should contain a single IEEE-754 float. In this case the @c format
- parameter 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
- 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.
-
- The @c format parameter is used to specify the format of the buffer
- contents, with the same restrictions as in LV2_Write_Function.
- */
- 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++ 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
- is returned.
-*/
-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
+/************************************************************************
+ *
+ * In-process UI extension for LV2
+ *
+ * Copyright (C) 2006-2008 Lars Luthman <lars.luthman at gmail.com>
+ *
+ * Based on lv2.h, which was
+ *
+ * Copyright (C) 2000-2002 Richard W.E. Furse, Paul Barton-Davis,
+ * Stefan Westerfeld
+ * Copyright (C) 2006 Steve Harris, Dave 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
+ This extension defines an interface that can be used in LV2 plugins and
+ hosts to create UIs for plugins. The UIs are plugins that reside in
+ shared object files in an LV2 bundle and are referenced in the RDF data
+ using the triples (Turtle shown)
+<pre>
+ @@prefix uiext: <http://lv2plug.in/ns/extensions/ui#> .
+ <http://my.plugin> uiext:ui <http://my.pluginui> .
+ <http://my.plugin> a uiext:GtkUI .
+ <http://my.pluginui> uiext: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. In this case the class is
+ uiext:GtkUI, which is the only class defined by this extension.
+
+ (Note: the prefix above is used throughout this file for the same URI)
+
+ 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.
+
+ 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 does 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 _not_ 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 all you can expect to work.
+
+ Since the LV2 specification itself allows for extensions that may add
+ new types of data and configuration parameters that plugin authors may
+ want 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> uiext:requiredFeature <http://my.feature> .
+ <http://my.pluginui> uiext:optionalFeature <http://my.feature> .
+</pre>
+ These predicates have the same semantics as lv2:requiredFeature and
+ lv2:optionalFeature - if a UI is declaring a feature as required, the
+ host is NOT allowed to load it unless it supports that feature, and if it
+ does support a feature (required or optional) it MUST pass that feature's
+ URI and any additional data (specified by the meta-extension that defines
+ the feature) to the UI's instantiate() function.
+
+ These features may be used to specify how to pass data between the UI
+ and the plugin port buffers - see LV2UI_Write_Function for details.
+
+ There are two features defined in this extension that hosts may want to
+ implement:
+<pre>
+ uiext:makeResident
+ uiext:makeSONameResident
+</pre>
+ If the first feature, @c uiext:makeResident, is required by a UI the host
+ MUST never unload the shared library containing the UI implementation
+ during the lifetime of the host process (e.g. never calling dlclose() on
+ Linux). This feature may be needed by e.g. a uiext:GtkUI that registers
+ its own Glib types using g_type_register_static() - if it gets unloaded
+ and then loaded again the type registration will break, since there is no
+ way to unregister the types when the library is unloaded.
+
+ The second feature, @c uiext:makeSONameResident, is ELF specific
+ and 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 uiext:residentSONames, like this:
+<pre>
+ <http://my.pluginui> uiext: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 uiext: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 uiext: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.
+
+ UIs written to this specification do not need to be threadsafe - the
+ functions defined below may only be called in the same thread as 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).
+
+ 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.
+*/
+
+#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, e.g. if
+ "<http://example.org/someui> a uiext:GtkUI", this is a pointer
+ to a GtkWidget compatible with GTK+ 2.0 and the UI can expect the GTK+
+ main loop to be running during the entire lifetime of all instances of that
+ 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, but uiext:GtkUI is the only type that is defined in this
+ extension. */
+typedef void* LV2UI_Widget;
+
+
+/** A pointer to some host data required to instantiate a UI.
+ Like the type of the widget, the actual type of this pointer is defined by
+ the type URI of the UI. Hosts can use this to pass toolkit specific data
+ to a UI it needs to instantiate (type map, drawing context, etc). For the
+ uiext:GtkUI type this should be NULL. */
+typedef void* LV2UI_Host_Data;
+
+
+/** This handle indicates 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;
+
+
+/** This handle indicates a particular plugin instance, 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 plugin instance data. */
+typedef void* LV2UI_Controller;
+
+
+/** This is 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
+ will depend on the class of the port it's being sent to, and the transfer
+ mechanism specified for that port class.
+
+ 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 ports of the class lv2:ControlPort, for which @c buffer_size
+ should always be 4 and the buffer should always contain a single IEEE-754
+ float.
+
+ 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. A function
+ pointer of this type will be provided to the UI by the host in the
+ instantiate() function.
+
+ An UI may list multiple transfer mechanisms for the same port type.
+ To tell the host which mechanism is to be used, it passes an integer ID
+ for the mechanism in the @c format parameter. This ID is retrieved from
+ 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 MUST also require the URI Map feature. A @c format
+ value of 0 is a special case that always means that the buffer should
+ be interpreted as a single IEEE-754 float, and may only be written to
+ a control port.
+
+ 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.
+*/
+typedef void (*LV2UI_Write_Function)(LV2UI_Controller controller,
+ uint32_t port_index,
+ uint32_t buffer_size,
+ uint32_t format,
+ const void* buffer);
+
+
+/** */
+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 plugin supports and any
+ additional data, just like in the LV2 plugin
+ instantiate() function.
+ */
+ 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 transfer mechanism extensions (see
+ 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 and the
+ buffer should contain a single IEEE-754 float. In this case the @c format
+ parameter 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
+ 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.
+
+ The @c format parameter is used to specify the format of the buffer
+ contents, with the same restrictions as in LV2_Write_Function.
+ */
+ 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++ 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
+ is returned.
+*/
+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/src/calf/osc.h b/src/calf/osc.h
index b124d55..2fa7eb6 100644
--- a/src/calf/osc.h
+++ b/src/calf/osc.h
@@ -107,9 +107,11 @@ struct waveform_family: public map<uint32_t, float *>
using map<uint32_t, float *>::iterator;
using map<uint32_t, float *>::end;
using map<uint32_t, float *>::lower_bound;
+ float original[SIZE];
void make(bandlimiter<SIZE_BITS> &bl, float input[SIZE])
{
+ memcpy(original, input, sizeof(original));
bl.compute_spectrum(input);
bl.remove_dc();
diff --git a/src/lv2gui.cpp b/src/lv2gui.cpp
index 404cb7f..daa1ec6 100644
--- a/src/lv2gui.cpp
+++ b/src/lv2gui.cpp
@@ -185,10 +185,11 @@ void gui_port_event(LV2UI_Handle handle, uint32_t port, uint32_t buffer_size, ui
{
plugin_gui *gui = (plugin_gui *)handle;
float v = *(float *)buffer;
- // printf("spv %d %f\n", port, v);
port -= gui->plugin->get_param_port_offset();
if (port >= (uint32_t)gui->plugin->get_param_count())
return;
+ if (fabs(gui->plugin->get_param_value(port) - v) < 0.00001)
+ return;
gui->set_param_value(port, v);
}
diff --git a/src/makerdf.cpp b/src/makerdf.cpp
index 1a9af6f..18f23d1 100644
--- a/src/makerdf.cpp
+++ b/src/makerdf.cpp
@@ -153,7 +153,7 @@ void make_ttl(string path_prefix)
header += "<http://calf.sourceforge.net/plugins/gui/gtk2-gui>\n"
" a uiext:GtkUI ;\n"
" uiext:binary <calflv2gui.so> ;\n"
- " uiext:requiredFeature uiext:makeResident .\n";
+ " uiext:requiredFeature uiext:makeResident .\n"
" \n";
#endif
@@ -178,7 +178,8 @@ void make_ttl(string path_prefix)
if (pi.rt_capable)
ttl += " lv2:optionalFeature lv2:hardRtCapable ;\n";
if (pi.midi_in_capable)
- ttl += " lv2:requiredFeature <" LV2_EVENT_URI "> ;\n";
+ ttl += " lv2:optionalFeature <" LV2_EVENT_URI "> ;\n";
+ // ttl += " lv2:requiredFeature <" LV2_EVENT_URI "> ;\n";
string ports = "";
int pn = 0;
diff --git a/src/monosynth.cpp b/src/monosynth.cpp
index e1eb66b..d094e28 100644
--- a/src/monosynth.cpp
+++ b/src/monosynth.cpp
@@ -360,7 +360,7 @@ bool monosynth_audio_module::get_static_graph(int index, int subindex, float val
enum { S = 1 << MONOSYNTH_WAVE_BITS };
int wave = dsp::clip(dsp::fastf2i_drm(value), 0, (int)wave_count - 1);
- float *waveform = waves[wave].get_level(0);
+ float *waveform = waves[wave].original;
for (int i = 0; i < points; i++)
data[i] = waveform[i * S / points];
return true;
--
calf audio plugins packaging
More information about the pkg-multimedia-commits
mailing list