Bi-Predicted Blocks

These functions use two reference blocks for prediction. At first, predictions are calculated for each reference block, and then prediction is calculated as average of two predictions.

• GetDiff16x16B
  Evaluates difference between current bi-predicted and mean of two reference blocks of 16x16 elements.
• GetDiff16x8B
  Evaluates difference between current bi-predicted and mean of two reference blocks of 16x8 elements.
• GetDiff8x8B
  Evaluates difference between current bi-predicted and mean of two reference blocks of 8x8 elements.
• GetDiff8x16B
  Evaluates difference between current bi-predicted and mean of two reference blocks of 8x16 elements.
• GetDiff8x4B
  Evaluates difference between current bi-predicted and mean of two reference blocks of 8x4 elements.
• Sub4x4, Sub8x8, Sub16x16
  Subtract two blocks and store the result in the third block.
• SubSAD8x8
  Subtracts two blocks, stores the result in the third block and computes a sum of absolute differences.

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