If the partition block is skippable, which means no coefficients
for Y, U, and V planes, its skip flag is set to 1. No quality
change (verified by borg tests), and no noticeable speed change.
Change-Id: I9231f720f8dd6364384cf05aa148ca24d75450f1
Libvpx was memseting every external frame buffer before decode. This
was to work around a valgrind issue in our C loop filter. Most of
the time this was not needed and we have noticed some significant
performance loss on some platforms. Now we require the application to
zero out the buffers if it is using external frame buffers.
Change-Id: I7330d00a315e65137ed30edd5f813e8929b76242
This commit enforces ARF validation check for compound inter modes.
It avoids potential access to ARF in the encoding process if it
is not allowed.
Change-Id: I055fec946b5d19d97937dc9001e1e564923e2439
The valid reference frame check in sub8x8 rate-distortion
optimization search has been included in the ref_frame_skip_mask
scheme. This commit removes the later further validation checks
that are not in effect.
Change-Id: I853b477c44037d3dc0afec6cbfce08a96c597a75
This commit replaces the best_ref_index table fetch with the use
of best_mbmode in vp9_rd_pick_inter_mode_sub8x8.
Change-Id: I882ee9ee6a8c0e61befcca1f4dba6d2ea8de8f13
The issue was discovered on bitstream with 2x vertical downscale. For
zero MVs, y_pad is set to 1 only when vertical convolution is
required. The original code assumes that for y_step_q4 == 32 we don't
perform vertical convolution. But vp9_setup_scale_factors_for_frame()
sets convolve functions so that when x_step and y_step are both not
equal to 16, convolve in both directions is performed. And convolve()
unconditionally subtracts one stride from source pointer when calls
convolve_horiz(). This leads to invalid memory access.
Change-Id: I882dfa6081a58e172b5ffa55842bfcd6727f10bf
Call to vp9_rc_get_second_pass_params() moved from
Pass2Encode() to earlier in vp9_get_compressed_data(),
to ensure that two pass stats and parameters are
available before decisions such as frame scaling.
Change-Id: If21537f0073919b04696a7d5e9aac78e23d76f39
When a reference frame type is not in the frame buffer, the mode
search threshold will be set to INT_MAX, so as to effectively
turn off the mode entries in the rate-distortion optimization loop
that involves this reference frame type. This operation is now
integrated in the ref_frame_skip_mask scheme. This commit hence
removes the redundant mode search threshold setting.
Change-Id: Ib18f45da611afda2af275201efd367df7f5101ab
This commit unifies the reference frame control in the rate-
distortion optimization search loop of sub8x8 block size to remove
the control dependency on mode search order.
Change-Id: I3a174099f71a7cc176ede9fd60e2374243ae9232
Improves function to return sad of integer pels by reusing integer
pels already visited in the smallest scale.
Turns on BIGDIA search for speed 4. Also, turns on the
first version of the pruned subpel search at this speed.
derf: -0.32% (speed 4)
Speed seems to improve by at least 5% but subject to verification.
Change-Id: Iaec8eaffd61d6237ac029e6a2a1b0a88b2a35271
Adds various high bitdepth transform functions and tests.
Much of the changes are related to using typedefs tran_low_t
and tran_high_t for the final transform cofficients and intermediate
stages of the transform computation respectively rather than fixed
types int16_t/int. When vp9_highbitdepth configure flag is off,
these map tp int16_t/int32_t, but when the flag is on, they map
to int32_t/int64_t to make space for needed extra precision.
Change-Id: I3c56de79e15b904d6f655b62ffae170729befdd8
The variable best_inter_rd is effectively not in use in the rate-
distortion mode search loops of both regular block sizes and sub8x8
block sizes.
Change-Id: I178f909f8c9629772e13adc6257908653b2adf31
The speed feature that skips compound inter prediction modes was
subsumed by other speed features and effectively was not in use.
This commit removes it.
Change-Id: I22b0c71a8ddd15d93b25d86fa63a1dce2ba6a1a9
