Although no mismatch was indicated for 8/16 wide sub-pixel filters
in issue 661, they had similar problems that could cause mismatch
potentially. This patch fixed calculations in HORIZx8/16
and VERTx8/16.
Change-Id: Ib85412d690bea5609a51f0e50e7c858406b8ff9e
Separate the rounding and right shift operations of forward transform
from those of inverse transform. Take out the assertion check from
inverse transforms. If the transform coefficients were constructed to
cause intermediate steps of inverse transform overflow, the codec will
just let it overflow without breaking the decoding flow.
Change-Id: Ia7ce15dfd1a73b4abbaa78cbc74ec718523c5b1b
In commit "3d50da5397d20abc932d81453b26cde758293a40", the stack
pointer was modified while aligning the stack, and it needed to
be pop out at the end.
Change-Id: I39e4adc6b8aa3379854dd264d41aa6f0f15c7953
This patch fixed issue 661: "Decoder produces mismatched outputs
with ssse3 enabled and disabled." In sub-pixel filters, a pixel
value was multiplied by a filter coefficient, and the results
were added up. The order of adding up these multiplications had to
be arranged carefully to prevent incorrect overflowing.
Change-Id: Ia78663dfe74a2d46900f1c6fb07c21fac273892f
VS2010 only supports avx. There is currently no avx code
in libvpx so don't create a special case for it.
Change-Id: I39a11410367712b98bc6122c5a42fabffcdb94cf
Using for loop based on max_tx_size instead of separate checks. Combining
build_coeff_contexts() with update_coef_probs().
Change-Id: Ie335a7db29830677fbc14478a9c190d3c1068665
Modifications are done to reduce the total clock cycle.
Speedup: 1.2
Tested with: park_joy_420_720p50.y4m
Change-Id: Ia36b87e62e2f80a5fadaf5628729aedc80f38f3f
Both functions have no relation to motion vectors, so moving them from
vp9_findnearmv.h to vp9_blockd.h.
Change-Id: I74f524267886ab0fff4a2da793a10c906ed0f43a
Added filter_selectively_vert_row2 to be ready for parallel
loopfiltering in vertical direction. This change did 2-row
filtering at a time. If 2 vertically adjacent 8x8 blocks do same
type of filtering, we can do 16-pixel filtering in parallel.
Next, we need to provide 16-pixel loopfiltering functions in c
and optimized versions for codec speedup.
Change-Id: Idf97bbdd70566e55bd30e1fd25cb8544e33291be
Add support to do 16 pixel horizontal filtering in Neon.
Nexus devices saw about 0.5% decode speed increase.
Change-Id: I2993f6c2d49f31fa74976879eeaa289fd3f4e15d
This function is called from vp9_setup_past_independence() which is called
before the modified piece of code. Moving reset of inter_mode_probs into
vp9_init_mbmode_probs() for consistency.
Change-Id: Ib188e8798e1fbe15407fd501406761b746fdda95
Although no mismatch was indicated for 8/16 wide sub-pixel filters
in issue 661, they had similar problems that could cause mismatch
potentially. This patch fixed calculations in HORIZx8/16
and VERTx8/16.
Change-Id: I169961c9d40a20340995b7d22aafc89ccf30bfca
This CL fixes an overcite with the AVX2 support CL previously
merged (Change-Id: Idc03f3fca4bf2d0afd33631ea1d3caf8fc34ec29) that
prevented runtime execution of AVX2 code in WebM.
Background:
Starting with the Sandybridge processor, the CPUID instruction was
enhanced to add various extended feature flag enumeration leaves.
Reading these leaves requires an additional input value for the CPUID
instruction which is stored in ECX. This change adds this second input
value for all ARCH_X86 and ARCH_x86_64 targets to the CPUID macros,
allowing checks of EBX bit 5 for AVX2 support. This capability will be
required moving forward to check for future processor features.
Change-Id: Ie9d872bc9ff68dad4b6578e4544e4dfd0ae26c36
In commit "3d50da5397d20abc932d81453b26cde758293a40", the stack
pointer was modified while aligning the stack, and it needed to
be pop out at the end.
Change-Id: I062971e195f1f2ab9d0ab5fb84dcf215a0fcaa67
