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StubImageFilez
Base class for stub image loaders.
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Incremental image parser. This class implements the standard
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(Consumer) Feed data to the parser.
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:exception IOError: If the parser failed to parse the image file.
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n d S)zHelper to save image based on tile list
:param im: Image object.
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Reads large blocks in a safe way. Unlike fp.read(n), this function
doesn't trust the user. If the requested size is larger than
SAFEBLOCK, the file is read block by block.
:param fp: File handle. Must implement a read method.
:param size: Number of bytes to read.
:returns: A string containing up to size bytes of data.
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