Encoding of bus @ 1500kbps (first 50 frames) goes from 3min57 to
3min35, i.e. approximately a 10.5% speedup. Note that the SIMD versions
which use a bilinear filter (x_offset & 7 || y_offset & 7) aren't
perfectly interleaved, and can probably be improved further in the
future. I've marked this with a few TODOs/FIXMEs in the code.
Change-Id: I5c9e900c0f0d32e431a50fecae213b510b2549f9
Improves the rd modeling function and implements them using interpolation
from a table which is a little faster. Also uses sse as input to the
modeling function rather than var - since there is no dc prediction
used and as a result the sse works a little better.
derfraw300: +0.05%
Speedup: ~1%
Change-Id: I151353c6451e0e8fe3ae18ab9842f8f67e5151ff
This uses variance to split partition. Variance is calculated using
nearest mv, always from last ref frame.
Change-Id: Idd015b4a9aa3bc82591759eac239680c07496896
The new print out includes skips and has prefixed sections so you can
grep to find things like transforms chosen on each frame.
Change-Id: I195043424647d9514cfc3ff6720a5b20d010fa1b
Optimized the quantization function by making it a two-pass
process. The first pass does a quick checking of the transform
coefficients against the base ZBIN, and only keep the good
enough set of coefficients for quantization. A skipping
check is added. If all coefficients are within the base ZBIN, no
quantization is needed. The second pass is the actual quantization
pass, which only processes the coefficient subset determined
in first pass. This reduces the computation. Furthermore, an
alternitive method is used for large transform size, which often
has sparse nonzero quantized coefficients.
Overall, the encoder speedup is about 4%. The quantization function
itself gets 20% faster.
Change-Id: I3a9dd0da6db030260b6d9c314a9fa48ecae89f22
This commit makes use of dual fdct32x32 versions for rate-distortion
optimization loop and encoding process, respectively. The one for
rd loop requires only 16 bits precision for intermediate steps.
The original fdct32x32 that allows higher intermediate precision (18
bits) was retained for the encoding process only.
This allows speed-up for fdct32x32 in the rd loop. No performance
loss observed.
Change-Id: I3237770e39a8f87ed17ae5513c87228533397cc3
This seems to only be used in the encoder. Also remove an empty wrapper
file that contained forward declarations for this function, but didn't
actually define any actual functions.
Change-Id: Ifc561eef7ebe374a7d03698055e51e105f6d614b
vp9_default_inter_mode_probs was being accessed with a different type
than it was defined with. Ensure that its declaration is included
prior to its definition.
Change-Id: I2f963f513ab2f4e339f8a3c17e3d0f03749eba16
All elements of this table are equal to 252, so replace it with a
single constant VP9_COEF_UPDATE_PROB.
Change-Id: I1e2d1d284326ce6df9899a740c2fc344b3ec81c9
The encoding time for bus at CIF goes from 661s to 625s. This commit
also enabled unit test of sad8x4/4x8 in sad_test.cc.
Change-Id: If3d10ebb56bda584bdb69bcf056599d580b12cb1
Avoid calling decode_block, inverse transform/add in the block is
a skip block for SBs smaller than 8x8 and intra-coded SBs.
Change-Id: I1684182f4a0050c8d6bb46cba6830d9425e7127d
The encoding time for bus at CIF goes from 661s to 625s. This commit
also enabled unit test of sad8x4/4x8 in sad_test.cc.
Change-Id: If3d10ebb56bda584bdb69bcf056599d580b12cb1
Modified to work with 8x8 blocks of memory. Will revisit
later for further optimizations. For the HD clip used, the
decoder improved by almost 20%.
Change-Id: Iaa4785be293a32a42e8db07141bd699f504b8c67
