An interface used by ImageReader implementations to
notify callers of their image and thumbnail reading methods of
progress.

 This interface receives general indications of decoding
progress (via the imageProgress and
thumbnailProgress methods), and events indicating when
an entire image has been updated (via the
imageStarted, imageComplete,
thumbnailStarted and thumbnailComplete
methods).  Applications that wish to be informed of pixel updates
as they happen (for example, during progressive decoding), should
provide an IIOReadUpdateListener.

An interface used by ImageReader implementations to
notify callers of their image and thumbnail reading methods of
pixel updates.

An interface used by ImageReader implementations to
notify callers of their image and thumbnail reading methods of
warnings (non-fatal errors).  Fatal errors cause the relevant
read method to throw an IIOException.

 Localization is handled by associating a Locale
with each IIOReadWarningListener as it is registered
with an ImageReader.  It is up to the
ImageReader to provide localized messages.

An interface used by ImageWriter implementations to notify
callers of their image writing methods of progress.

An interface used by ImageWriter implementations to
notify callers of their image and thumbnail reading methods of
warnings (non-fatal errors).  Fatal errors cause the relevant
read method to throw an IIOException.

 Localization is handled by associating a Locale
with each IIOWriteWarningListener as it is registered
with an ImageWriter.  It is up to the
ImageWriter to provide localized messages.