V4L2_AV1_REF_BWDREF_FRAME
mf_types[ref_ind] = V4L2_AV1_REF_BWDREF_FRAME;
val = rockchip_vpu981_av1_dec_get_dist(ctx, rf, oh[V4L2_AV1_REF_BWDREF_FRAME]);
val = rockchip_vpu981_av1_dec_get_dist(ctx, rf, oh[V4L2_AV1_REF_BWDREF_FRAME]);
val = rockchip_vpu981_av1_dec_get_dist(ctx, rf, oh[V4L2_AV1_REF_BWDREF_FRAME]);
frame->global_motion.type[V4L2_AV1_REF_BWDREF_FRAME]);
#define BWD_BUF_IDX (V4L2_AV1_REF_BWDREF_FRAME - V4L2_AV1_REF_LAST_FRAME)
#define BWD_BUF_IDX (V4L2_AV1_REF_BWDREF_FRAME - V4L2_AV1_REF_LAST_FRAME)