Halffloats have a limited range.  It shouldnt normally come up, but if the scale value passed in produces a small value, the half floats will be denormals, which are slow and/or flust to zero.  This test ensures they behave the same in C and SIMD and tests the performance of denormals.

TEST=TestHalfFloatPlane_denormal
BUG=libyuv:560
R=hubbe@chromium.org

Review URL: https://codereview.chromium.org/2424233004 .

R=fbarchard@google.com
BUG=libyuv:634

Performance gains : (Auto-vectorized C vs MSA SIMD)

ARGB4444ToYRow_MSA        : ~3.0x
ARGB4444ToUVRow_MSA       : ~1.8x
ARGB4444ToARGBRow_MSA     : ~3.4x

ARGB4444ToYRow_Any_MSA    : ~2.8x
ARGB4444ToUVRow_Any_MSA   : ~1.7x
ARGB4444ToARGBRow_Any_MSA : ~3.2x

Review URL: https://codereview.chromium.org/2421843002 .

remove old comment about initialize to zero.
remove ifdef and replace with macro defined to zero.

BUG=None
TEST=try bots
R=kjellander@chromium.org

Review URL: https://codereview.chromium.org/2425623004 .

BUG=chromium:652188
TBR=fbarchard@chromium.org

Review URL: https://codereview.chromium.org/2427643003 .

As they're being removed from the try server.

BUG=chromium:652188
TBR=fbarchard@chromium.org

Review URL: https://codereview.chromium.org/2426693003 .

BUG=chromium:652188
TBR=ehmaldonado@chromium.org

Review URL: https://codereview.chromium.org/2421343002 .

After switching bots from GYP to GN, build artifacts are left that fails
the next builds. Since it's unfeasible to clean out all bot machines
it's better to have an automated system for this, which is what landmines is.

By adding a line to tools/get_landmines.py it is possible to clobber each bot
that syncs past that "landmine CL".

BUG=chromium:652188
TBR=ehmaldonado@chromium.org

Review URL: https://codereview.chromium.org/2427633003 .

After switching the default bots from GYP to GN,
we now only have a few GYP bots left, so rename the trybots
accordingly

BUG=chromium:652188
TBR=fbarchard@chromium.org

Review URL: https://codereview.chromium.org/2425693002 .

R=wangcheng@google.com, hubbe@chromium.org
BUG=libyuv:560

Review URL: https://codereview.chromium.org/2421993002 .

R=wangcheng@google.com, hubbe@chromium.org
BUG=libyuv:560

Review URL: https://codereview.chromium.org/2418763006 .

BUG=libyuv:572
TEST=try bots
R=wangcheng@google.com, magjed@chromium.org

Review URL: https://codereview.chromium.org/2416783004 .

Port SSE2 version to AVX2.
BUG=libyuv:572
TEST=/usr/local/google/home/fbarchard/intelsde/sde -skx -- out/Release/libyuv_unittest --gtest_filter=*Extract*
R=wangcheng@google.com, magjed@chromium.org

Review URL: https://codereview.chromium.org/2420553002 .

This variable was introduced in https://codereview.chromium.org/2293853002
and causes builds to fail, since is not defined in WebRTC.

BUG=webrtc:6281
TBR=kjellander@chromium.org

Review URL: https://codereview.chromium.org/2418643003 .

R=kjellander@chromium.org
BUG=libyuv:649

Review URL: https://codereview.chromium.org/2414763002 .

TBR=kjellander@chromium.org
BUG=libyuv:649
TEST=call gn gen out\Release "--args=is_debug=false is_clang=true"

Review URL: https://codereview.chromium.org/2414783002 .

YUV 411 is very uncommon format.  Remove support.

Update documentation to reflect that 411 is deprecated.

Simplify tests for YUV to only test with the new side by side YUV but keep old 3 plane test around with a macro for now.

BUG=libyuv:645
R=kjellander@chromium.org

Review URL: https://codereview.chromium.org/2406123002 .

I420 output can be slow due to multi channel write.
Putting the U and V into a single side by side buffer can improve performance.

TBR=wangcheng@google.com
BUG=None

Review URL: https://codereview.chromium.org/2403223003 .

TBR=wangcheng@google.com
BUG=libyuv:647
TESTED=LibYUVConvertTest.YUY2ToI422_Opt

Review URL: https://codereview.chromium.org/2393393006 .

This function is the first step of YUY2 To I420.
Provided primarily for diagnostics.

TBR=wangcheng@google.com
BUG=libyuv:647
TESTED=LibYUVConvertTest.YUY2ToY_Opt

Review URL: https://codereview.chromium.org/2399153004 .

R=fbarchard@google.com
BUG=libyuv:634

Performance gains as below,

YUY2ToI422, YUY2ToI420 :-

YUY2ToYRow_MSA          : ~10x
YUY2ToUVRow_MSA         : ~11x
YUY2ToUV422Row_MSA      : ~9x
YUY2ToYRow_Any_MSA      : ~6x
YUY2ToUVRow_Any_MSA     : ~5x
YUY2ToUV422Row_Any_MSA  : ~4x

UYVYToI422, UYVYToI420 :-

UYVYToYRow_MSA          : ~10x
UYVYToUVRow_MSA         : ~11x
UYVYToUV422Row_MSA      : ~9x
UYVYToYRow_Any_MSA      : ~6x
UYVYToUVRow_Any_MSA     : ~5x
UYVYToUV422Row_Any_MSA  : ~4x

Review URL: https://codereview.chromium.org/2397693002 .

YUY2ToI422_Any_Neon previously required 16 pixels and duplicated
the last pixel.  The replication was not necessary after a previous
change to treat YUY2 to 4 byte macro pixels.

TBR=harryjin@google.com
BUG=libyuv:648
TESTED=util/android/test_runner.py gtest -s libyuv_unittest -t 7200 --verbose --release --gtest_filter=*YUY2ToI422* -a "--libyuv_width=17 --libyuv_height=7 --libyuv_repeat=999 --libyuv_flags=1"

Review URL: https://codereview.chromium.org/2399143002 .

This reduces the number of objects when not specifying a
build target during compile. This is especially significant for Android
where the number of objects decreases from 3322 to 1761.

BUG=libyuv:644
R=fbarchard@google.com

Review URL: https://codereview.chromium.org/2395743002 .

Optimize max enables O2 for official builds.  Normally release builds
are O2 but the official build is Os, affecting performance.
The GYP file was previously updated to enable optimize max,
which enables ltcg and O2.

Documentation updated to show GN builds in docs/getting_started.md

BUG=libyuv:642
R=kjellander@chromium.org

Review URL: https://codereview.chromium.org/2386093003 .

R=fbarchard@google.com
BUG=libyuv:634

Performance gains :-

I422ToYUY2Row_MSA     - ~12x
I422ToYUY2Row_Any_MSA - ~7x

I422ToUYVYRow_MSA     - ~12x
I422ToUYVYRow_Any_MSA - ~7x

Review URL: https://codereview.chromium.org/2378753004 .

Low level support for 12 bit 420, 422 and 444 YUV video frame conversion.

BUG=libyuv:560, chromium:445071
TEST=LibYUVPlanarTest.TestHalfFloatPlane on windows
R=hubbe@chromium.org, wangcheng@google.com

Review URL: https://codereview.chromium.org/2387713002 .

Low level support for 12 bit 420, 422 and 444 YUV video frame conversion.

BUG=libyuv:560, chromium:445071
TEST=untested
R=hubbe@chromium.org

Review URL: https://codereview.chromium.org/2381493006 .

BUG=libyuv:560,chromium:445071
TEST=untested
R=hubbe@chromium.org

Review URL: https://codereview.chromium.org/2371293002 .

Original bt709 color space coefficients were full range yuv for higher
quality.  This change makes the coefficients use the video constrained
color space the same as bt601 which is 16 to 240 for Y and 16 to 235 for
chroma channels.

BUG=libyuv:639
TEST=libyuv unittests run locally
R=hubbe@chromium.org

Review URL: https://codereview.chromium.org/2367253003 .

BUG=libyuv:560
TEST=local compile for windows
R=wangcheng@google.com

Review URL: https://codereview.chromium.org/2364293002 .

Remove NOLINT from guards

TEST=git cl lint
BUG=libyuv:634

Review URL: https://codereview.chromium.org/2374653002 .

Signed vectors are rarely used in libyuv... remove macros for now.
Remove word shuffler, use byte shuffler in row_msa.
Bump version number.

TBR=manojkumar.bhosale@imgtec.com
BUG=libyuv:634

Review URL: https://codereview.chromium.org/2375553002 .

This patch adds MSA optimized ARGBMirrorRow function in libYUV project.

Performance gain ~3x

R=fbarchard@google.com
BUG=libyuv:634

Review URL: https://codereview.chromium.org/2368313003 .

Instead of creating symlinks on Windows, the script is now:
* creating a junction for directories
* copying individual files.

This makes 'gclient sync' and 'gclient runhooks' no longer
require administrator's privileges.
If the script is run with administrator's privileges, a
warning will be printed, informing the user that it's not recommended.

Also clean up a few old documentation references to the
Chromium SVN->Git transition.

BUG=libyuv:584,webrtc:4911
TESTED=Running the script with+without administrator's privileges.
I also tested the case of this change being rolled back, in which
case I verified that the copied files are still being deleted using
the same cleanup code path as the previous symlinks.
NOTRY=True
R=braveyao@chromium.org

Review URL: https://codereview.chromium.org/2359383002 .

follow up warning fixs
cpu_id.cc(167): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
lint warning: cpu_id.cc:171:  Missing space before ( in if(  [whitespace/parens] [5]

TBR=manojkumar.bhosale@imgtec.com
BUG=libyuv:634
TEST=try bots for windows.

Review URL: https://codereview.chromium.org/2365813002 .

As per the preparation patch added in Chromium sources at,
2150943003: Add MIPS SIMD Arch (MSA) build flags for GYP/GN builds

This patch adds first MSA optimized function in libYUV project.

BUG=libyuv:634
R=fbarchard@google.com

Review URL: https://codereview.chromium.org/2285683002 .

TBR=kjellander@chromium.org
BUG=libyuv:637, chromium:646279

Review URL: https://codereview.chromium.org/2340933005 .

../../source/scale_neon.cc:576:1: error: multi-line comment [-Werror=comment]
 // #define BLENDER(a, b, f) (uint8)((int)(a) + \
 ^

BUG=None
TEST=try bots

Review URL: https://codereview.chromium.org/2344203003 .

BUG=libyuv:635
TEST=try bots
R=harryjin@google.com

Review URL: https://codereview.chromium.org/2347733002 .

BUG=None
TEST=try bots

Review URL: https://codereview.chromium.org/2346633002 .

BUG=libyuv:636
TESTED=try bots
R=kjellander@chromium.org

Review URL: https://codereview.chromium.org/2339813002 .