sig_block_sse2[j] = sig_block_c[j] = rnd.Rand8();
// The pixels in mc_avg_block are generated by adding a random
// number in range [-19, 19] to corresponding pixels in sig_block.
sig_block_sse2[j] = sig_block_c[j] = rnd.Rand8();
// The pixels in mc_avg_block are generated by adding a random
// number in range [-19, 19] to corresponding pixels in sig_block.