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
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
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: Id08af4200fea9e1b896fc40157b8651c2c7e80f2
In subpixel filters, prefetched source data, unrolled loops,
and interleaved instructions.
In HORIZx4, integrated the idea in Scott's CL (commit:
d22a504d11), which was suggested by
Erik/Tamar from Intel. Further tweaking was done to combine row 0,
2, and row 1, 3 in registers to do more 2-row-in-1 operations until
the last add.
Test showed a ~2% decoder speedup.
Change-Id: Ib53d04ede8166c38c3dc744da8c6f737ce26a0e3
Interleaved the instructions, reduced register dependency, and
prefetched the source data. This improved the decoder speed
by 0.6% - 2%.
Change-Id: I568067aa0c629b2e58219326899c82aedf7eccca
Updates the common convoloution code to support blocks larger than
16x16, and rectangular blocks. This uncovered a bug in the SSSE3
filtering routines due to the order of application of saturation.
This commit fixes that bug, adjusts the unit test to bias its
random values towards the extremes, and adds a test to ensure that
all filters conform to the expected pairwise addition structure.
Change-Id: I81f69668b1de0de5a8ed43f0643845641525c8f0
Initial ssse3 convolve avg functions and is one step closer
to using x86inc.asm. The decoder performance improved by 8% for
the test clip used. This should be revisited later to see if
averaging outside the loop is better than having many similar
filter functions.
Change-Id: Ice3fafb423b02710b0448ffca18b296bcac649e9
A 16 bit overflow condition occurs when using the EIGHTTAP_SMOOTH filters.
(vp9_sub_pel_filters_8lp) Changed the order of the adds to fix this problem.
Also added ssse3 support for 4x4 subpixel filtering.
Change-Id: I475eaadae920794c2de5e01e9735c059a856518e
Support for gyp which doesn't support multiple objects in the same
static library having the same basename.
Change-Id: Ib947eefbaf68f8b177a796d23f875ccdfa6bc9dc
