/**
* Pack four delta values (a,a,b,b) into one 32bit word
/**
* Pack four delta values (a,a,b,b) into one 32bit word
const int16_t *deltas; ///< delta tables for 4x4 block modes
const int32_t *deltas_m10; ///< delta tables for 8x8 block modes
uint8_t num_dyads; ///< number of two-pixel deltas
const int16_t *deltas; ///< delta tables for 4x4 block modes
const int32_t *deltas_m10; ///< delta tables for 8x8 block modes
uint8_t num_dyads; ///< number of two-pixel deltas