struct _VAProbabilityDataBufferVP8

VP8 Coefficient Probability Data Buffer Structure

Contains the contents of the token probability table, which may be

incrementally modified in the frame header. There are four dimensions to

the token probability array. The outermost dimension is indexed by the

type of plane being decoded; the next dimension is selected by the

position of the coefficient being decoded; the third dimension, * roughly

speaking, measures the "local complexity" or extent to which nearby

coefficients are non-zero; the fourth, and final, dimension of the token

probability array is indexed by the position in the token tree structure,

as are all tree probability arrays. This structure is sent once per frame.