Scanning Functions

Scanning functions convert a two-dimensional 8x8 array into one-dimensional data and vice versa using the predefined scan pattern.

• ScanInv
  Performs classical zigzag, alternate-horizontal, or alternate-vertical inverse scan on a block stored in a compact buffer.
• ScanFwd
  Performs classical zigzag, alternate-horizontal, or alternate-vertical forward scan on a block.

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