- Replaces lcu_dqp_enabled with max_qp_delta_depth in encoder_control_t.
- Fixes set_cu_qps so that it can handle quantization groups of
arbitrary size.
- Fixes computation of QP predictors so that it works for quantization
groups of arbitrary size.
Adds an additional grid search step that starts from the zero motion
vector after the normal grid search. The search range for this step is
half of the normal range.
- Changes TZ grid search and star refinement to keep the origin constant
instead of moving to the best position after each iteration.
- Changes star refinement to loop until there is no more improvement,
instead of running the step only once.
When the starting point for integer motion estimation was selected among
the merge candidates, the candidate motion vectors were always rounded
down. This commit changes the rounding so that they are rounded to the
nearest integer MV instead.
- Fixes two errors in calculating the POC for the reference frame for
temporal candidate MV scaling.
- Fixes using the MV for the wrong direction when the temporal MV
predictor block uses bi-prediction.
Fixes#160.
Adds struct inter_search_info_t for holding the parameters that are used
by most function related to inter search. Passing the parameters in
a single struct greatly reduces the number of parameters for many
functions.
Inter costs are computed using SAD except when fractional motion
estimation or bi-prediction is enabled. This commit changes
search_pu_inter_ref to recalculate the cost with SATD. Fixes inter/intra
cost comparisons since intra costs are always SATD costs.
Adds field max_inter_ref_lcu to encoder_control_t. It is used to set up
inter-LCU dependencies in encoder_state_encode_leaf and restrict motion
vectors in fracmv_within_tile.
When using WPP and OWF, the first CTU of a row depends on the last CTU
of the row below in the reference frame. This is necessary when SAO is
enabled since we currently do SAO for a whole CTU row at a time. When
SAO is disabled, however, it is unnecessary to wait for the whole row.
Changes CTUs to depend only on the CTU below in the reference frame
instead of the whole row when WPP and OWF are enabled and SAO disabled.
Gives a significant speedup when running on a machine with many CPU
cores.
