Thumbnail errors

Register a callback with OTVVideoView to handle thumbnail errors.

JAVA

$body

Reason	Description	Application error handling recommendation
ERROR_IO = 1	Failed to download thumbnail sprite	No retry
ERROR_DATA_PARSING = 2	An invalid argument is passed to extract thumbnail	No retry
ERROR_MEMORY = 3	Not enough memory to create/extract thumbnails
ERROR_THUMBNAILS_MAXIMUM_MEMORY_REACHED = 4	The maximum memory size is reached and can not extract thumbnails