Reason of this bug is that ARM64 can't extend the sign bit of a 32-bit integer
to 64-bit integer automatically.
ScaleARGBRowDownEven_NEON is also enabled for ARM64.

BUG=319
TESTED=libyuv_unittest
R=fbarchard@google.com

Change-Id: Ib8d30a05156239247296aa8bb4faa94b4f69a9c3

Review URL: https://webrtc-codereview.appspot.com/32949004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1273 16f28f9a-4ce2-e073-06de-1de4eb20be90

fix 2 bugs:
 - build bug libyuv.gyp
 - runtime bug in ScaleRowDown38_2_Box_NEON
BUG=
TESTED=libyuv_unittest
R=fbarchard@google.com, fbarchard@chromium.org

Review URL: https://webrtc-codereview.appspot.com/23939004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1117 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=357
TESTED=clang on ios
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/29489004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1086 16f28f9a-4ce2-e073-06de-1de4eb20be90

change vector range notation to a list of registers for clang compatibility. break compare into 2 neon files for consistency with other neon64 files.
BUG=357
TESTED=local ios build
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/30379004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1085 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=357
TESTED=local ios a64 build
R=yunqingwang@google.com

Review URL: https://webrtc-codereview.appspot.com/25549004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1084 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=357
TESTED=ios arm64 build
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/29429004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1083 16f28f9a-4ce2-e073-06de-1de4eb20be90

TESTED=libyuv_unittest
BUG=357
R=fbarchard@google.com


git-svn-id: http://libyuv.googlecode.com/svn/trunk@1080 16f28f9a-4ce2-e073-06de-1de4eb20be90

TESTED=libyuv_unittest
BUG=319
R=fbarchard@chromium.org, fbarchard@google.com

Review URL: https://webrtc-codereview.appspot.com/19099004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1072 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=319
TESTED=libyuv_unittest
R=fbarchard@google.com

Add the following functions:
- ScaleRowDown38_NEON
- ScaleRowDown38_2_Box_NEON
- ScaleRowDown38_3_Box_NEON

I find that these functions aren't tracked in the gtest.
So that I write the test case myself.

Change-Id: Ie70a00d7f708450dc786dfb388386ff748a21508

Review URL: https://webrtc-codereview.appspot.com/15229004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1071 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=319
TESTED=libyuv_unittest
R=fbarchard@chromium.org, fbarchard@google.com

Add the following functions:
 - ScaleRowDown34_NEON
 - ScaleRowDown34_0_Box_NEON
 - ScaleRowDown34_1_Box_NEON

Change-Id: If3fe96de602b77033ec67252ef755ef3f88f33aa

Review URL: https://webrtc-codereview.appspot.com/20209004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1070 16f28f9a-4ce2-e073-06de-1de4eb20be90

TESTED=libyuv_unittest
BUG=319
R=fbarchard@chromium.org, fbarchard@google.com

Review URL: https://webrtc-codereview.appspot.com/21279004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1068 16f28f9a-4ce2-e073-06de-1de4eb20be90

TESTED=libyuv_unittest
BUG=319
R=fbarchard@chromium.org, fbarchard@google.com

Review URL: https://webrtc-codereview.appspot.com/22439004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1066 16f28f9a-4ce2-e073-06de-1de4eb20be90

TESTED=libyuv_unit_test
BUG=319
R=fbarchard@chromium.org, fbarchard@google.com

Review URL: https://webrtc-codereview.appspot.com/15269004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1064 16f28f9a-4ce2-e073-06de-1de4eb20be90

TESTED=libyuv_unit_test
BUG=319
R=fbarchard@chromium.org, fbarchard@google.com

Review URL: https://webrtc-codereview.appspot.com/17199004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1063 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUS=319
TESTED=libyuv_unit_test
R=fbarchard@google.com

Review URL: https://webrtc-codereview.appspot.com/18179004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1051 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=333
TESTED=ncval
R=thorcarpenter@google.com

Review URL: https://webrtc-codereview.appspot.com/20719004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1017 16f28f9a-4ce2-e073-06de-1de4eb20be90

port neon to arm64. the register names have changes from r0 to w0 or x0 depending on size.  Passing them as parameters (e.g. %0) makes the code register name agnostic.
BUG=333
TESTED=32 bit build still works.
R=nfullagar@chromium.org

Review URL: https://webrtc-codereview.appspot.com/20669005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1016 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=333
TESTED=ncval
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/18549004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1015 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=333
TESTED=d:\src\nacl_sdk\pepper_canary\tools\ncval.exe newlib/Release/nacltest_arm.nexe
R=nfullagar@chromium.org

Review URL: https://webrtc-codereview.appspot.com/17599004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1006 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=303
TEST=compile -x c

Review URL: https://webrtc-codereview.appspot.com/6599006

git-svn-id: http://libyuv.googlecode.com/svn/trunk@954 16f28f9a-4ce2-e073-06de-1de4eb20be90

Neon RGBToUV more accurate coefficients and subsample averaging.  Instead of adding 4 pixels and making coefficients 4x smaller, this makes the coefficients 2x small and does a shift, for best accuracy.
BUG=297
TESTED=try bots
R=tpsiaki@google.com, yunqingwang@google.com

Review URL: https://webrtc-codereview.appspot.com/6309004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@920 16f28f9a-4ce2-e073-06de-1de4eb20be90

Reduce alignment for loops from 16 bytes to 4 bytes.  Reduces outer loop overhead without hurting innerloop time.
BUG=none
TESTED=try bots
R=fbarchard@chromium.org, mflodman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/4659004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@880 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=none
TEST=untested
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/4509005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@879 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=258
TEST=try bots
R=johannkoenig@google.com

Review URL: https://webrtc-codereview.appspot.com/1944004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@743 16f28f9a-4ce2-e073-06de-1de4eb20be90

Change vld and vst to specify only elements and size not sign for better arm compiler compatability.
BUG=none
TEST=none
R=kma@webrtc.org, mflodman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/1643004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@721 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=232
TEST=convert.exe -f 0 faces_640x480_P420.yuv face2_160x120_P420.yuv
R=changjun.yang@intel.com

Review URL: https://webrtc-codereview.appspot.com/1579005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@709 16f28f9a-4ce2-e073-06de-1de4eb20be90

Specialized scale down sample to 1 / 2 size adjust to match general purpose code which uses odd pixel (rounded up - nearest neighbor).
BUG=223
TEST=out\Debug\convert.exe -f 0 faces_640x480_P420.yuv face2_320x240_P420.yuv
R=johannkoenig@google.com

Review URL: https://webrtc-codereview.appspot.com/1583005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@708 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=189
TESTED=try
Review URL: https://webrtc-codereview.appspot.com/1113006

git-svn-id: http://libyuv.googlecode.com/svn/trunk@582 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=none
TEST=lint
Review URL: https://webrtc-codereview.appspot.com/1063010

git-svn-id: http://libyuv.googlecode.com/svn/trunk@553 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=none
TEST=lint
Review URL: https://webrtc-codereview.appspot.com/931013

git-svn-id: http://libyuv.googlecode.com/svn/trunk@496 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=none
TEST=./libyuv_unittest --gtest_filter=*ARGBScale*
Review URL: https://webrtc-codereview.appspot.com/964016

git-svn-id: http://libyuv.googlecode.com/svn/trunk@494 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/938014

git-svn-id: http://libyuv.googlecode.com/svn/trunk@486 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/922007

git-svn-id: http://libyuv.googlecode.com/svn/trunk@437 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/860009

git-svn-id: http://libyuv.googlecode.com/svn/trunk@396 16f28f9a-4ce2-e073-06de-1de4eb20be90