Interface ErrorHandler

This interface provides a way to catch errors and warnings from a Transcoder. If an application needs to implement customized error handling, it must implement this interface and then register an instance with the Transcoder using the transcoder's setErrorHandler method. The transcoder will then report all errors and warnings through this interface. A transcoder shall use this interface instead of throwing an exception: it is up to the application whether to throw an exception for different types of errors and warnings. Note, however, that there is no requirement that the transcoder continue to provide useful information after a call to fatalError (in other words, a transcoder class could catch an exception and report a fatalError).