mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-22 16:26:39 +00:00
62 lines
2.3 KiB
C
62 lines
2.3 KiB
C
/* utils.h
|
|
|
|
Free software by Richard W.E. Furse. Do with as you will. No
|
|
warranty. */
|
|
|
|
#ifndef LADSPA_SDK_LOAD_PLUGIN_LIB
|
|
#define LADSPA_SDK_LOAD_PLUGIN_LIB
|
|
|
|
/*****************************************************************************/
|
|
|
|
#include <ladspa.h>
|
|
|
|
/*****************************************************************************/
|
|
|
|
/* Functions in load.c: */
|
|
|
|
/* This function call takes a plugin library filename, searches for
|
|
the library along the LADSPA_PATH, loads it with dlopen() and
|
|
returns a plugin handle for use with findPluginDescriptor() or
|
|
unloadLADSPAPluginLibrary(). Errors are handled by writing a
|
|
message to stderr and calling exit(1). It is alright (although
|
|
inefficient) to call this more than once for the same file. */
|
|
void * loadLADSPAPluginLibrary(const char * pcPluginFilename);
|
|
|
|
/* This function unloads a LADSPA plugin library. */
|
|
void unloadLADSPAPluginLibrary(void * pvLADSPAPluginLibrary);
|
|
|
|
/* This function locates a LADSPA plugin within a plugin library
|
|
loaded with loadLADSPAPluginLibrary(). Errors are handled by
|
|
writing a message to stderr and calling exit(1). Note that the
|
|
plugin library filename is only included to help provide
|
|
informative error messages. */
|
|
const LADSPA_Descriptor *
|
|
findLADSPAPluginDescriptor(void * pvLADSPAPluginLibrary,
|
|
const char * pcPluginLibraryFilename,
|
|
const char * pcPluginLabel);
|
|
|
|
/*****************************************************************************/
|
|
|
|
/* Functions in search.c: */
|
|
|
|
/* Callback function for use with LADSPAPluginSearch(). The callback
|
|
function passes the filename (full path), a plugin handle (dlopen()
|
|
style) and a LADSPA_DescriptorFunction (from which
|
|
LADSPA_Descriptors can be acquired). */
|
|
typedef void LADSPAPluginSearchCallbackFunction
|
|
(const char * pcFullFilename,
|
|
void * pvPluginHandle,
|
|
LADSPA_Descriptor_Function fDescriptorFunction);
|
|
|
|
/* Search through the $(LADSPA_PATH) (or a default path) for any
|
|
LADSPA plugin libraries. Each plugin library is tested using
|
|
dlopen() and dlsym(,"ladspa_descriptor"). After loading each
|
|
library, the callback function is called to process it. This
|
|
function leaves items passed to the callback function open. */
|
|
void LADSPAPluginSearch(LADSPAPluginSearchCallbackFunction fCallbackFunction);
|
|
|
|
/*****************************************************************************/
|
|
|
|
#endif
|
|
|
|
/* EOF */
|