From Stephan Huber, "attached you'll find a zip containing some bug-fixes and some refactored + new code.

* ZeroConfDevice does now return FILE_NOT_HANDLED instead of FILE_NOT_FOUND
* present3D supports multiple devices per env-var P3D_DEVICE, separate multiple device with a space

I refactored parts the p3d-plugin, the curl-plugin and parts of Registry and ReaderWriter. Currently the p3d-plugin tries to open all remote files with the help of the curl-plugin.

I added a new method to Registry called getReaderWriterForProtocolAndExtension. which will return a ReaderWriter which is capable in handling the remote file for the given protocol and extension. If no readerwriter is found for the given extension, a list is built of all readerwriters supporting the given protocol and this list is checked for support of wildcards (extension = "*"). If anything matches it get returned.

I added this principle also to the Registry, so now it's possible to register a generic ReaderWriter which can handle all filetypes for a given protocol, similar what curl is doing. All you have to do is to load the plugin at startup. The curl-fallback is still in place.

With these changes it is now possible to reference a movie inside a presentation without a server-address, read the presentation (with curl) and stream the movie with the correct plugin (e.g. QTKit)

"

include/osgDB/ReaderWriter

@@ -64,6 +64,8 @@ class OSGDB_EXPORT ReaderWriter : public osg::Object
 
         /** Return true if ReaderWriter accepts specified file extension.*/
         virtual bool acceptsExtension(const std::string& /*extension*/) const;
+        
+        virtual bool acceptsProtocol(const std::string& protocol) const;
 
         /// Bit mask for setting up which feature types are available for read and/or write
         enum Features

include/osgDB/Registry

@@ -128,6 +128,11 @@ class OSGDB_EXPORT Registry : public osg::Referenced
 
         /** get const list of all registered ReaderWriters.*/
         const ReaderWriterList& getReaderWriterList() const { return _rwList; }
+        
+        /** get a list of registered ReaderWriters which can handle given protocol */
+        void getReaderWriterListForProtocol(const std::string& protocol, ReaderWriterList& results) const;
+        
+        ReaderWriter* getReaderWriterForProtocolAndExtension(const std::string& protocol, const std::string& extension);
 
 
         typedef std::vector< osg::ref_ptr<ImageProcessor> > ImageProcessorList;