CAVLC Functions

These functions calculate block characteristics for CAVLC encoding:

• number of trailing_ones transform coefficient levels
• code that describes signs of trailing_ones
• number of non-zero coefficients in block
• number of zero coefficients in block
• array of levels
• array of runs.

EncodeChromaDcCoeffsCAVLC_H264 is used for a 2x2 DC chroma block. For other block types EncodeCoeffsCAVLC_H264 is used.

• EncodeCoeffsCAVLC_H264
  Calculates characteristics of 4X4 block for CAVLC encoding.
• EncodeChromaDcCoeffsCAVLC_H264
  Calculates characteristics of 2X2 chroma DC block for CAVLC encoding.

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