HDR_FLAG
uh->frame_type = !HDR_FLAG(KEY_FRAME);
uh->show_frame = HDR_FLAG(SHOW_FRAME);
uh->error_resilient_mode = HDR_FLAG(ERROR_RESILIENT);
uh->intra_only = HDR_FLAG(INTRA_ONLY);
uh->allow_high_precision_mv = HDR_FLAG(ALLOW_HIGH_PREC_MV);
uh->refresh_frame_context = HDR_FLAG(REFRESH_FRAME_CTX);
uh->frame_parallel_decoding_mode = HDR_FLAG(PARALLEL_DEC_MODE);
key_frame = HDR_FLAG(KEY_FRAME);
intra_only = HDR_FLAG(INTRA_ONLY);
error_resilient_mode = HDR_FLAG(ERROR_RESILIENT);