REF_CONTEXTS
static const u16 default_single_ref_cdf[REF_CONTEXTS][SINGLE_REFS - 1][CDF_SIZE(2)] = {
static const u16 default_comp_ref_cdf[REF_CONTEXTS][FWD_REFS - 1][CDF_SIZE(2)] = {
static const u16 default_comp_bwdref_cdf[REF_CONTEXTS][BWD_REFS - 1][CDF_SIZE(2)] = {