.FastAIEncoding

			abstract type Encoding

Transformation of Blocks. Can encode some Blocks ([ encode]), and optionally decode them [ decode]

Interface

• encode(::E, ::Context, block::Block, data) encodes block of data. The default is to do nothing. This should be overloaded for an encoding E, concrete Block types and possibly a context.

• decode(::E, ::Context, block::Block, data) decodes block of data. This should correspond as closely as possible to the inverse of encode(::E, ...). The default is to do nothing, as not all encodings can be reversed. This should be overloaded for an encoding E, concrete Block types and possibly a context.

• encodedblock(::E, block::Block) -> block' returns the block that is obtained by encoding block with encoding E. This needs to be constant for an instance of E, so it cannot depend on the sample or on randomness. The default is to return nothing, meaning the same block is returned and not changed. Encodings that return the same block but change the data (e.g. ProjectiveTransforms) should return block.

• decodedblock(::E, block::Block) -> block' returns the block that is obtained by decoding block with encoding E. This needs to be constant for an instance of E, so it cannot depend on the sample or on randomness. The default is to return nothing, meaning the same block is returned and not changed.

• encode!(buf, ::E, ::Context, block::Block, data) encodes data inplace.

• decode!(buf, ::E, ::Context, block::Block, data) decodes data inplace.