NV12 allow NULL for Y

NV12 allow NULL for Y

The conversion from NV12 and other Bi or Tri planar formats, differs only in the UV handling.  The helper function supports passing a NULL for the dst_y channel indicating you only want to do the UV conversion.

TBR=harryjin@google.com
TEST=LibYUVConvertTest.NV12ToI420_NullY (601 ms)
BUG=libyuv:631
Committed: https://chromium.googlesource.com/libyuv/libyuv/+/17d31e6a4a3134d6ffbee9c7ed4a30faac7d0b29

[fbarchard1, 2016-08-23 19:17:40]

Description was changed from

==========
NV12 allow NULL for Y

TEST=None
BUG=libyuv:626
==========

to

==========
NV12 allow NULL for Y

TEST=None
BUG=libyuv:626
==========

[fbarchard1, 2016-08-23 19:17:40]

fbarchard@google.com changed reviewers:
+ harryjin@google.com, magjed@chromium.org

[fbarchard1, 2016-08-23 22:00:13]

Description was changed from

==========
NV12 allow NULL for Y

TEST=None
BUG=libyuv:626
==========

to

==========
NV12 allow NULL for Y

The conversion from NV12 and other Bi or Tri planar formats, differs only in the
UV handling.  The helper function supports passing a NULL for the dst_y channel
indicating you only want to do the UV conversion.

TBR=harryjin@google.com
TEST=LibYUVConvertTest.NV12ToI420_NullY (601 ms)
BUG=libyuv:626
==========

[fbarchard1, 2016-08-23 22:03:17]

Added test for NV12ToI420 with NULL for Y channel

On Sandy Bridge with 1,000 720p images:
NV12ToI420_Any (133 ms)
NV12ToI420_Unaligned (139 ms)
NV12ToI420_Invert (144 ms)
NV12ToI420_Opt (133 ms)
NV12ToI420_NullY (65 ms)

On Qualcomm 820 with 1,000 720p images:
LibYUVConvertTest.NV12ToI420_Any (447 ms)
LibYUVConvertTest.NV12ToI420_Unaligned (447 ms)
LibYUVConvertTest.NV12ToI420_Invert (459 ms)
LibYUVConvertTest.NV12ToI420_Opt (447 ms)
LibYUVConvertTest.NV12ToI420_NullY (66 ms)

[fbarchard1, 2016-08-24 02:05:28]

Description was changed from

==========
NV12 allow NULL for Y

The conversion from NV12 and other Bi or Tri planar formats, differs only in the
UV handling.  The helper function supports passing a NULL for the dst_y channel
indicating you only want to do the UV conversion.

TBR=harryjin@google.com
TEST=LibYUVConvertTest.NV12ToI420_NullY (601 ms)
BUG=libyuv:626
==========

to

==========
NV12 allow NULL for Y

The conversion from NV12 and other Bi or Tri planar formats, differs only in the
UV handling.  The helper function supports passing a NULL for the dst_y channel
indicating you only want to do the UV conversion.

TBR=harryjin@google.com
TEST=LibYUVConvertTest.NV12ToI420_NullY (601 ms)
BUG=libyuv:626

Committed:
https://chromium.googlesource.com/libyuv/libyuv/+/17d31e6a4a3134d6ffbee9c7ed4...
==========

[fbarchard1, 2016-08-24 02:05:29]

Committed patchset #4 (id:60001) manually as
17d31e6a4a3134d6ffbee9c7ed4a30faac7d0b29 (presubmit successful).

[fbarchard1, 2016-08-24 02:06:10]

Description was changed from

==========
NV12 allow NULL for Y

The conversion from NV12 and other Bi or Tri planar formats, differs only in the
UV handling.  The helper function supports passing a NULL for the dst_y channel
indicating you only want to do the UV conversion.

TBR=harryjin@google.com
TEST=LibYUVConvertTest.NV12ToI420_NullY (601 ms)
BUG=libyuv:626

Committed:
https://chromium.googlesource.com/libyuv/libyuv/+/17d31e6a4a3134d6ffbee9c7ed4...
==========

to

==========
NV12 allow NULL for Y

The conversion from NV12 and other Bi or Tri planar formats, differs only in the
UV handling.  The helper function supports passing a NULL for the dst_y channel
indicating you only want to do the UV conversion.

TBR=harryjin@google.com
TEST=LibYUVConvertTest.NV12ToI420_NullY (601 ms)
BUG=libyuv:631

Committed:
https://chromium.googlesource.com/libyuv/libyuv/+/17d31e6a4a3134d6ffbee9c7ed4...
==========