1 files changed, 62 insertions, 0 deletions
diff --git a/ext/ladspa/utils.h b/ext/ladspa/utils.h
new file mode 100644
index 00000000..1be64d09
--- /dev/null
+++ b/ext/ladspa/utils.h
@@ -0,0 +1,62 @@
+/* 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 */