{
uint8_t primary_frame, prev_frame;
uint32_t abs_bits, prec_bits, round, prec_diff, sub, mx;
- int32_t r;
+ int32_t r, prev_gm_param;
primary_frame = s->raw_frame_header->primary_ref_frame;
prev_frame = s->raw_frame_header->ref_frame_idx[primary_frame];
abs_bits = AV1_GM_ABS_ALPHA_BITS;
prec_bits = AV1_GM_ALPHA_PREC_BITS;
+ /* setup_past_independence() sets PrevGmParams to default values. We can
+ * simply point to the current's frame gm_params as they will be initialized
+ * with defaults at this point.
+ */
+ if (s->raw_frame_header->primary_ref_frame == AV1_PRIMARY_REF_NONE)
+ prev_gm_param = s->cur_frame.gm_params[ref][idx];
+ else
+ prev_gm_param = s->ref[prev_frame].gm_params[ref][idx];
+
if (idx < 2) {
if (type == AV1_WARP_MODEL_TRANSLATION) {
abs_bits = AV1_GM_ABS_TRANS_ONLY_BITS -
prec_diff = AV1_WARPEDMODEL_PREC_BITS - prec_bits;
sub = (idx % 3) == 2 ? (1 << prec_bits) : 0;
mx = 1 << abs_bits;
- r = (s->ref[prev_frame].gm_params[ref][idx] >> prec_diff) - sub;
+ r = (prev_gm_param >> prec_diff) - sub;
s->cur_frame.gm_params[ref][idx] =
(decode_signed_subexp_with_ref(s->raw_frame_header->gm_params[ref][idx],