~60-70% faster depending on the block size

Change-Id: Icdbaa9977a91a63cbcc6ead0cf19d5a2af7f27e1

This commit replaces vp9_idct.h with txfm_common.h in many SIMD
implementation files for precise file dependency.

Change-Id: If73dd726bb16537e7494f28538b0a169810f9756

This commit factors the 4x4, 8x8, and 16x16 2D-DCT forward
transform operations into vpx_dsp folder.

Change-Id: I084b117b79c0925edcbcabb93f62b9f4bf8dbe7d

BUG=https://code.google.com/p/webm/issues/detail?id=1023

Change-Id: I212a1d67b23ce3b5ce08800de369b25b9e375e7d

Change-Id: I66bf6720c396c89aa2d1fd26d5d52bf5d5e3dff1

Change-Id: Ia5044d13c09685c401191fe87fbf90d36203aadd

Factor out the subtraction operator as common function.

Change-Id: I526e703477c6a290e0e3e3c8898f8bb1ca82779b

BUG=https://code.google.com/p/webm/issues/detail?id=1022

Change-Id: I510c3b0a70158fa2e4da554f7c5d7558021a6ddf

The only difference between the two was that the vp9 function allowed
for every step in the bilinear filter (16 steps) while vp8 only allowed
for half of those. Since all the call sites in vp9 (<< 1) the input, it
only ever used the same steps as vp8.

This will allow moving the subpel variance to vpx_dsp with the rest of
the variance functions.

Change-Id: I6fa2509350a2dc610c46b3e15bde98a15a084b75

subpel functions will be moved in another patch.

Change-Id: Idb2e049bad0b9b32ac42cc7731cd6903de2826ce

this macro was used inconsistently and only differs in behavior from
DECLARE_ALIGNED when an alignment attribute is unavailable. this macro
is used with calls to assembly, while generic c-code doesn't rely on it,
so in a c-only build without an alignment attribute the code will
function as expected.

Change-Id: Ie9d06d4028c0de17c63b3a27e6c1b0491cc4ea79

Create a new component, vpx_dsp, for code that can be shared
between codecs. Move the SAD code into the component.

This reduces the size of vpxenc/dec by 36k on x86_64 builds.

Change-Id: I73f837ddaecac6b350bf757af0cfe19c4ab9327a

vestigial. replace instances with memset() which they already were being
defined to.

Change-Id: Ie030cfaaa3e890dd92cf1a995fcb1927ba175201

On Nexus 7 speed -6 saw ~18% increase in perf.

Tested on Nexus 7, built with ndk r10d, gcc 4.9.

BUG=https://code.google.com/p/webm/issues/detail?id=908

Change-Id: I70ccdea0326750552ed946fb004507d6efe02d5c

On Nexus 7 speed -6 saw ~15% increase in perf.

Tested on Nexus 7, built with ndk r10d, gcc 4.9.

BUG=https://code.google.com/p/webm/issues/detail?id=908

Change-Id: I4b2006b644c488f42bf06d8a22ef0e6120a96bf9

On Nexus 7 speed -6 saw ~30% increase in perf.

Tested on Nexus 7, built with ndk r10d, gcc 4.9.

BUG=https://code.google.com/p/webm/issues/detail?id=908

Change-Id: Id12af7d1883243c23e6692e898aea82299633d58

On Nexus 7 speed -5 got ~2%, -6 got ~15%, -7 and -8 got ~30%
increase in perf.

Tested on Nexus 7, built with ndk r10d, gcc 4.9.

Change-Id: I83246d63b96674d170098a572fa4fe28a05aaf51

The 16 bit sum vector was overflowing.

Change-Id: I0fdf38e832ee99457ec8680a92691a6175ff8c3f

On Nexus 7 speed -5, -6, -7, and -8 saw about a 1% increase
in perf for 480p. Speeds -5, -6, -7, and -8 saw about a 1.5%
increase in perf for 720p.

Tested on Nexus 7, built with ndk r10d, gcc 4.9.

Change-Id: Ibf17ebfd952a6aec941719bd8306df8ec4574bee

On Nexus 7 speed -5, -6, -7, and -8 saw about a 15% increase
in perf for 480p. Speeds -5, -6, -7, and -8 saw about a 10%
increase in perf for 720p.

Tested on Nexus 7, built with ndk r10d, gcc 4.9.

Change-Id: I2fa5315845e3021c9a6e2ea47e52e68b398d8334

Saves 5 instructions on 8x8 and 16x16 and 8 instructions
on 32x32, when compiled with 4.9.

Change-Id: Id3da613a36a9d27d8c5169c59ba45d247c920c6c

Add optimized Neon functions of:
vp9_variance32x64
vp9_variance64x32
vp9_variance64x64

On Nexus 7 speed -5 and -6 saw about a 4% increase in perf.
Speeds -7 and -8 saw about a 6% increase in perf.
Tested on Nexus 7, built with ndk r10d, gcc 4.9.

Change-Id: I5a81f13c9897eb927fa39662530f5524a0f768fa

This reverts commit 9946ee23.

Fix the ssse3 asm function.

Change-Id: I07f77a63aa98087626e45c4e87aa5dcafc0b0b07

This reverts commit e9b586e2.

Change-Id: I5b36e6727da6c05278d97e2c37b80c109f79bed4

zbin extra / zbin_oq_value was widely passed around,
hence removal touches a lot of code.

Change-Id: Idc94359735b60c38a160e4385ae09d5ca8b6b8e5

Eliminated instructions by using better neon instructions
and rearranging the loop.

On a Nexus 7, vpxenc (in realtime mode, speed -12)
reported a performance improvement of ~1.0%.

Change-Id: I6b1700e79318f647ea67ef25e954c308932950ec

vp9_variance8x8(), and vp9_get8x8var().

On a Nexus 7, vpxenc (in realtime mode, speed -12)
reported a performance improvement of ~1.2%.

Change-Id: I8a66ac2a0f550b407caa27816833bdc563395102

Change-Id: I3be8911121ef9a5f39f6c1a2e28f9e00972e0624

On a Nexus 7, vpxenc (in realtime mode, speed -12)
reported a performance improvement of ~3.2%

Change-Id: I8862497264142171b7efc32df1a67714a23539f4

vp9_variance32x32(), and vp9_get32x32var().

Change-Id: I8137e2540e50984744da59ae3a41e94f8af4a548

On a Nexus 7, vpxenc (in realtime mode, speed -12)
reported a performance improvement of ~12.4%

Change-Id: Id29d215acf58bb108489e218a259adf74b4768d7

vp9_variance16x16(), and vp9_get16x16var().

On a Nexus 7, vpxenc (in realtime mode, speed -12)
reported a performance improvement of ~16.7%.

Change-Id: Ib163aa99f56e680194aabe00dacdd7f0899a4ecb

On a Nexus 7, vpxenc (in realtime mode, speed -12)
reported a performance improvement of ~3.7%.

Change-Id: I428c72c40df82c6d537955e320a8debf99343004

and vp9_sad16x16_neon()

On a Nexus 7, vpxenc (in realtime mode, speed -6)
reported a performance improvement of ~17%.

Change-Id: I91e070cde2973451083d3f3d63b49b7886de9a85

Change-Id: I9f0ae635fb9a95c4aa1529c177ccb07e2b76970b

Change-Id: I9f0ae635fb9a95c4aa1529c177ccb07e2b76970b

Change-Id: I2c252f3ddcc99e96c1f5d3dab8bcb25a2a3637ea

Change-Id: I20c426e91ee49666db42e20eb074095ab6b8ec5d

This patch allows use of 8x8 and 4x4 ADST correctly for Intra
16x16 modes and Intra 8x8 modes when the block size selected
is smaller than the prediction mode. Also includes some cleanups
and refactoring.

Rebase.

Change-Id: Ie3257bdf07bdb9c6e9476915e3a80183c8fa005a

Support for gyp which doesn't support multiple objects in the same
static library having the same basename.

Change-Id: Ib947eefbaf68f8b177a796d23f875ccdfa6bc9dc