Returns a mapping similar to other decoders
_decode function.
"image":the image
"alpha":the alpha channel
"xsize":int
"ysize":int
size of image
"type":"image/gif"
file type information as MIME type
Note
The weird name of this function (not _decode
as the other decoders) is because gif was the first
decoder and was written before the API was finally
defined. Sorry about that. /Mirar