This reduces 16x16 2D-DCT runtime from 865 cycles to 837 cycles.

Change-Id: I137758b81cd127b936175284310e81378db64552

This commit makes use of the butterfly structure to enable the sse2
version implementation of 8x8 ADST/DCT hybrid transform coding.

The runtime of hybrid transform module goes down from 1170 cycles
to 245 cycles. Overall speed-up around 1.5%.

Change-Id: Ic808ffd21ece8a9d0410d8c0243d7b6c28ac3b3f

and remove unused code.

Change-Id: If380440c4450294b5450b7a9eeb94a376846ec01

Change-Id: I7960178c95c54d5c4497e44cfc8c493566294b34

Change-Id: Idfd69e66e8982275eb00d8007a55efd1a4f86a98

- size_t vs int.

Change-Id: Ib47ebd932a4b69db9f52a43000bb69d0a96b9134

This reverts commit 90a9900a

Seems to break the Mac build:
src/include/gtest/internal/gtest-port.h:1208:: pthread_mutex_lock(&mutex_)failed with error 22
Abort trap: 6

Change-Id: Icbe31161d7c27f1b0a28d33409e7712430bbf0ae

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

dboolhuff.c(50) : warning C4267: 'initializing' : conversion from
'size_t' to 'int'

Change-Id: I6b85759efb2fa19f362f406623d8a7583a55c036

adds a new speed feature to force partitioning to be greater than
or less than a certain size

Change-Id: I8c048eeeef93700ae822eccf98f8751a45b2e7d0

this feature lets you set a partitioning size to be used by the entire
frame.

Change-Id: I208a4c8c701375cbb054418266f677768b6f8f06

This uses variance to split partition. Variance is calculated using
nearest mv,  always from last ref frame.

Change-Id: Idd015b4a9aa3bc82591759eac239680c07496896

Change-Id: Ie24489a4d39f3e53e816eeebf75a1c9c7d94515a

Change-Id: Ideee45cad8b38087c509cd404484728e85d0c427

This uses the speed feature functionality for code.

Change-Id: I9cd16c0c5f98520ae27ebba81aa2c178546587f8

force us to go through slow partitioning for keyframes, altref and
overlays.

Change-Id: I1a286361bf74083e71973575a7296be46eb98742

Overall speedup around 5% (bus @ 1500kbps first 50 frames 4min10 ->
3min58). Specific changes to timings for each function compared to
original assembly-optimized versions (or just new version timings if
no previous assembly-optimized version was available):

sse2   4x4:    99 ->   82 cycles
sse2   4x8:           128 cycles
sse2   8x4:           121 cycles
sse2   8x8:   149 ->  129 cycles
sse2   8x16:  235 ->  245 cycles (?)
sse2  16x8:   269 ->  203 cycles
sse2  16x16:  441 ->  349 cycles
sse2  16x32:          641 cycles
sse2  32x16:          643 cycles
sse2  32x32: 1733 -> 1154 cycles
sse2  32x64:         2247 cycles
sse2  64x32:         2323 cycles
sse2  64x64: 6984 -> 4442 cycles

ssse3  4x4:           100 cycles (?)
ssse3  4x8:           103 cycles
ssse3  8x4:            71 cycles
ssse3  8x8:           147 cycles
ssse3  8x16:          158 cycles
ssse3 16x8:   188 ->  162 cycles
ssse3 16x16:  316 ->  273 cycles
ssse3 16x32:          535 cycles
ssse3 32x16:          564 cycles
ssse3 32x32:          973 cycles
ssse3 32x64:         1930 cycles
ssse3 64x32:         1922 cycles
ssse3 64x64:         3760 cycles

Change-Id: I81ff6fe51daf35a40d19785167004664d7e0c59d

need to rework these

Change-Id: I17dc2c88d2faadd2f8fb117c52c25f04ea2e9856

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

Change-Id: I26e80ede80cb4389378a95afa95d229092a9859a

Enable sign bias check and round-trip error unit tests for 4x4 hybrid
transform modules.

Change-Id: Icd3d839f098d4b92b00ff76eac146765b039d0d3

Since intra block decoding is handled by decode_sb_intra() separately.

Change-Id: I42d757884714084c92fc23ec5d35d4dc946f4b15

Change-Id: Iab96e6a50aec543c63e15cd134f9d5f01ca7ceff

currently threading is internal to libvpx so thread safety is unneeded
in libgtest -- visual studio builds already operate in this way as they
do not have pthread.h available by default.

this removes an unconditional link to libpthread using $(extralibs)
should libvpx require it.

Change-Id: Ieae1d693406653a54b54fba818c598836797d33b

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

Change-Id: Ic924f07c6ab0c929c6cdf11880d3c625806e272c

Change-Id: I183a38997a9d01e4a1b869e92509f6915216fa09