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56 Commits

Author SHA1 Message Date
Yuan Tong
c41eabe3d4 Add full 16 bit scaling up by 2x function 
R=fbarchard@chromium.org

Change-Id: I4a869aefdc16e34357a615727711594c5d8e3a80
Bug: libyuv:882
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/2719842
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
 2021-03-02 19:29:02 +00:00
Frank Barchard
d768774299 add yuvconvstants util 
miscellaneous cleanup of other code/comments

Bug: libyuv:873, libyuv:877
Change-Id: I0d8caf9a65908ff8898b25494f7c724775f84fa3
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/2692930
Reviewed-by: Wan-Teh Chang <wtc@google.com>
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
 2021-02-12 19:45:16 +00:00
Yuan Tong
d4ecb70610 Add P010ToP410 and P210ToP410 
These are 16 bit bi-planar convert functions to scale UV plane to
Y plane's size using (bi)linear filter.

libyuv_unittest --gtest_filter=*ToP41*

R=fbarchard@chromium.org

Bug: libyuv:872
Change-Id: I3cb4fafe2b2c9eedd0d91cf4c619abb9ee107bc1
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/2690102
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
 2021-02-12 14:55:24 +00:00
Frank Barchard
12a4a2372c Rounding added to scaling upsampler 
Bug: libyuv:872, b/178521093
Change-Id: I86749f73f5e55d5fd8b87ea6938084cbacb1cda7
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/2686945
Reviewed-by: Wan-Teh Chang <wtc@google.com>
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
 2021-02-10 18:51:02 +00:00
Yuan Tong
f7fc83f46d Add NV12ToNV24 and NV16ToNV24 
These are bi-planar convert functions to scale UV plane to Y plane's size using (bi)linear filter.

libyuv_unittest --gtest_filter=*ToNV24*

R=fbarchard@chromium.org

Change-Id: I3d98f833feeef00af3c903ac9ad0e41bdcbcb51f
Bug: libyuv:872
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/2682152
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
 2021-02-09 07:38:40 +00:00
Frank Barchard
942c508448 BT.2020 Full Range yuvconstants 
new color util to compute constants needed based on white point.

[ RUN      ] LibYUVColorTest.TestFullYUVV
hist	      -2	      -1	       0	       1	       2
red	       0	 1627136	13670144	 1479936	       0
green	  319285	 3456836	 9243059	 3440771	  317265
blue	       0	 1561088	14202112	 1014016	       0

Bug: libyuv:877, b/178283356
Change-Id: If432ebfab76b01302fdb416a153c4f26ca0832d6
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/2678859
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
Reviewed-by: richard winterton <rrwinterton@gmail.com>
 2021-02-06 00:26:55 +00:00
Yuan Tong
fc61dde1eb Add special optimization for I420ToI444 and I422ToI444 
These functions use (bi)linear filter, to scale U and V planes to the size of Y plane.
This will help enhance the quality of YUV to RGB conversion.

Also added 10bit and 12bit version:
I010ToI410
I210ToI410
I012ToI412
I212ToI412

libyuv_unittest --gtest_filter=LibYUVConvertTest.I42*ToI444*:LibYUVConvertTest.I*1*ToI41*

R=fbarchard@chromium.org

Change-Id: Ie4a711a5ba28f2ff1f44c021f7a5c149022264c5
Bug: libyuv:872
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/2658097
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
 2021-02-03 10:53:02 +00:00
Frank Barchard
37480f12c6 Add BT.709 Full Range yuv constants. 
MAKEYUVCONSTANTS macro to generate struct for YUV to RGB
Fix I444AlphaToARGB unit test for ARM by adjusting C version to match Neon implementation.

Bug: libyuv:879, libyuv:878, libyuv:877, libyuv:862, b/178283356
Change-Id: Iedb171fbf668316e7d45ab9e3481de6205ed31e2
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/2646472
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
Reviewed-by: Wan-Teh Chang <wtc@google.com>
 2021-01-26 18:36:56 +00:00
Frank Barchard
b7a1c5ee5d Scale by even factor low level row function 
Bug: b/171884264
Change-Id: I6a94bde0aa05e681bb4590ea8beec33a61ddbfc9
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/2518361
Reviewed-by: richard winterton <rrwinterton@gmail.com>
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
 2020-11-03 21:25:18 +00:00
Frank Barchard
d730dc2f18 2x down sample for UV planes ported to SSSE3 / NEON 
Bug: libuyv:838
Change-Id: Id9fb3282a3e86143d76b5e0cb557f0523a88b3c8
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/2465578
Reviewed-by: richard winterton <rrwinterton@gmail.com>
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
 2020-10-13 21:42:15 +00:00
Frank Barchard
413a8d8041 Add AYUVToNV12 and NV21ToNV12 
BUG=libyuv:832
TESTED=out/Release/libyuv_unittest --gtest_filter=*ToNV12* --libyuv_width=1280 --libyuv_height=720 --libyuv_repeat=1000 --libyuv_flags=-1 --libyuv_cpu_info=-1

R=rrwinterton@gmail.com

Change-Id: Id03b4613211fb6a6e163d10daa7c692fe31e36d8
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/1560080
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
Reviewed-by: richard winterton <rrwinterton@gmail.com>
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
 2019-04-12 17:48:45 +00:00
Frank Barchard
b36c86fdfe Port box filter to NEON 
Bug: libyuv:821
Change-Id: I4a6b9bee2c2fae199c73c9ec7ecb32bde37c1852
Tested: out/Release/libyuv_unittest --gtest_filter=*ScaleFrom1920x1080_Box --libyuv_width=160 --libyuv_height=90 --libyuv_repeat=1000
Reviewed-on: https://chromium-review.googlesource.com/c/1298598
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
Reviewed-by: Miguel Casas <mcasas@chromium.org>
 2018-10-25 18:56:29 +00:00
Frank Barchard
7e389884a1 Switch to C99 types 
Append _t to all sized types.
uint64 becomes uint64_t etc

Bug: libyuv:774
Test: try bots build on all platforms
Change-Id: Ide273d7f8012313d6610415d514a956d6f3a8cac
Reviewed-on: https://chromium-review.googlesource.com/879922
Reviewed-by: Miguel Casas <mcasas@chromium.org>
 2018-01-23 19:16:05 +00:00
Lei Zhang
8445617191 Mark a bunch of kArray variables as const. 
This allows the linker to move the variables from the .data section to
the .rodata section.

Bug: libyuv:254
Test: out/Release/libyuv_unittest --gtest_filter=* --libyuv_width=1280 --libyuv_height=720 --libyuv_repeat=999 --libyuv_flags=-1 --libyuv_cpu_info=-1

Change-Id: I6998570f1af4337d7b80313d9e18e36aa20d6ec0
Reviewed-on: https://chromium-review.googlesource.com/777033
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
 2017-11-27 23:38:44 +00:00
Frank Barchard
0acc67712f clang format / lint cleanup for arm scale functions 
TBR=kjellander@chromium.org
BUG=libyuv:725
TEST=lint

Change-Id: I76f777427f9b1458faba12796fb0011d8e3228d5
Reviewed-on: https://chromium-review.googlesource.com/646586
Reviewed-by: Cheng Wang <wangcheng@google.com>
 2017-08-31 22:41:08 +00:00
Frank Barchard
a826dd7112 ARGBScaleDown by 2 with nearest neighbor optimized 
TBR=kjellander@chromium.org
BUG=libyuv:723
TEST=ScaleDownBy2_None

Change-Id: I6861e62d3a67dde916b87fdc46eb02f2b4ee9f17
Reviewed-on: https://chromium-review.googlesource.com/644149
Reviewed-by: Frank Barchard <fbarchard@google.com>
Reviewed-by: Cheng Wang <wangcheng@google.com>
 2017-08-30 23:22:14 +00:00
Frank Barchard
1c85f98846 Scale down by 2 linear use 'half add' to average pixels. 
Use ld2 to load even and odd pixels into different registers
and hadd to half add them to each other.

Previously used paired and shift.

TBR=kjellander@chromium.org
BUG=libyuv:723
TEST=ScaleDownBy2_Linear

Change-Id: I3ec72bcf7d4c746837217496c301eb4e4ad963cf
Reviewed-on: https://chromium-review.googlesource.com/644113
Reviewed-by: Cheng Wang <wangcheng@google.com>
 2017-08-30 22:10:32 +00:00
Frank Barchard
6c94ad13b5 Remove ARM NaCL macros from source 
NaCL has been disabled for awhile, so the code
will still build, but only with C versions.
This change removes the MEMACCESS() macros from
Neon and Neon64 source.

BUG=libyuv:702
TEST=try bots build for arm.
R=kjellander@chromium.org

Change-Id: Id581a5c8ff71e18cc69595e7fee9337f97c44a19
Reviewed-on: https://chromium-review.googlesource.com/528332
Reviewed-by: Cheng Wang <wangcheng@google.com>
Commit-Queue: Frank Barchard <fbarchard@google.com>
 2017-06-09 22:22:07 +00:00
Frank Barchard
bbe8c233f2 scale warning fixes for unused parameters 
BUG=libyuv:680
TEST=builds and runs with no warnings

Change-Id: I7d60ef44292fa6ad4f7c4e2e2657359b864d2dab
Reviewed-on: https://chromium-review.googlesource.com/442670
Commit-Queue: Frank Barchard <fbarchard@google.com>
Reviewed-by: Henrik Kjellander <kjellander@chromium.org>
 2017-02-15 21:38:59 +00:00
Frank Barchard
e62309f259 clang-format libyuv 
BUG=libyuv:654
R=kjellander@chromium.org

Review URL: https://codereview.chromium.org/2469353005 .
 2016-11-07 17:37:23 -08:00
Frank Barchard
6ad3aa6ae4 fix multi-line comment warning 
../../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 .
 2016-09-16 15:16:39 -07:00
Frank Barchard
137aa63afe Fix some comment typos 
BUG=None
TEST=try bots

Review URL: https://codereview.chromium.org/2346633002 .
 2016-09-15 15:38:19 -07:00
Frank Barchard
b8ddb5a2a7 rounding for arm filter 
R=wangcheng@google.com, harryjin@google.com
BUG=libyuv:607

Review URL: https://codereview.chromium.org/2093913004 .
 2016-06-24 16:07:49 -07:00
Frank Barchard
cc88adc620 YUV scale filter columns improved filtering accuracy 
upscale a YUV image.  observe change in hue.. green especially.
disable ScaleFilterCols_SSSE3, falling back on ScaleFilterCols_C
observe hue.. green especially, is better.

was ScaleFrom1280x720_Bilinear (1620 ms)
now ScaleFrom1280x720_Bilinear (1907 ms)

BUG=libyuv:605
TEST=try bots
R=harryjin@google.com, wangcheng@google.com

Review URL: https://codereview.chromium.org/2084533006 .
 2016-06-23 20:16:55 -07:00
Frank Barchard
cf101116c9 Remove initialize to zero on output variables for inline. 
Inline that uses temporary variables is currently initializing them
to 0 and passing in as output "+r".
This CL replaces the output constraint to "=&r" for most meaning an
output with early write (before inputs).  This allows the initialize
to zero step to be removed, saving 1 instruction.

BUG=libyuv:580
TESTED=local libyuv build on gcc/linux and try bots
R=harryjin@google.com

Review URL: https://codereview.chromium.org/1895743008 .
 2016-04-18 16:24:26 -07:00
Frank Barchard
1f461f73d8 remove align directives 
R=harryjin@google.com
BUG=none

Review URL: https://webrtc-codereview.appspot.com/54809004.
 2015-08-04 17:00:03 -07:00
fbarchard@google.com
ab6b224675 fix for arm builds where tmp for assembly produces an error if its uninitialized. 
BUG=libyuv:432
TESTED=try bots
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/49249004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1392 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-04-30 18:21:19 +00:00
fbarchard@google.com
c9986313ac lsl by 2 requires a number sign for xcode on ios 64 bit build. add the # sign for ios compatibility. remove legacy x86 asm files that are unused. the unused files cause complications in build systems that build all files. 
BUG=libyuv:423
TESTED=try bots
R=noahric@google.com

Review URL: https://webrtc-codereview.appspot.com/45119004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1369 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-04-14 19:57:33 +00:00
yang.zhang@arm.com
5f609856de Add ScaleARGBFilterCols_NEON for ARM32/64 
ARM32/64 NEON versions of ScaleARGBFilterCols_NEON are implemented.

BUG=319
TESTED=libyuvTest.* on ARM32/64 with Android
R=fbarchard@google.com

Change-Id: Ifea62bc25d846bf16cb51d13b408de7bf58dccd4

Review URL: https://webrtc-codereview.appspot.com/46699004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1361 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-04-07 03:45:29 +00:00
fbarchard@google.com
e2ea106068 shift for arm wants a # sign for nacl and ios. 
BUG=420
TESTED=d:/src/nacl_sdk/pepper_canary/toolchain/win_arm_newlib/bin/arm-nacl-g++ -o newlib/Release/source/scale_neon_arm.o -c source/scale_neon.cc -g -O2 -pthread -MMD -DNDEBUG  -Id:/src/nacl_sdk/pepper_canary/include -Id:/src/nacl_sdk/pepper_canary/include/newlib  -I./include
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/47949004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1356 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-04-03 23:28:44 +00:00
yang.zhang@arm.com
f23d6222ac Add ScaleARGBCols_NEON for ARM32/64 
ARM32/64 NEON versions of ScaleARGBCols_NEON are implemented.

BUG=319
TESTED=libyuvTest.* on ARM32/64 with Android
R=fbarchard@google.com

Change-Id: Id9ad97f7aa5d8a34cd55ace9e648cb6ff028efd9

Review URL: https://webrtc-codereview.appspot.com/47689004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1351 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-03-31 03:03:05 +00:00
yang.zhang@arm.com
0d3bfab6db Add nacl macros to ScaleFilterCols_NEON on ARM32/64 platform 
Add the nacl macros to ARM functions. If not, a bunch of code is failing
to validate.

BUG=319
TESTED=libyuvTest.* on ARM32/64 with Android
R=fbarchard@google.com

Change-Id: I7a36434f18e0de8b8f8a9fe01167bfe50cff8962

Review URL: https://webrtc-codereview.appspot.com/47739004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1343 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-03-24 08:02:30 +00:00
yang.zhang@arm.com
d6d7de5742 Add ScaleFilterCols_NEON for ARM32/64 
ARM32/64 NEON versions of ScaleFilterCols_NEON are implemented.

BUG=319
TESTED=libyuvTest.* on ARM32/64 with Android
R=fbarchard@google.com

Change-Id: I5b0838769ffb0182155d7cd6bcc520eb81eb5c4e

Review URL: https://webrtc-codereview.appspot.com/41349004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1340 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-03-19 03:55:05 +00:00
yang.zhang@arm.com
4d387fc619 Add ScaleARGBRowDown2Linear_NEON for ARM32/64 
ARM32/64 NEON versions of ScaleARGBRowDown2Linear_NEON are implemented.

BUG=319
TESTED=libyuvTest.ARGBScale* on ARM32/64 with Android
R=fbarchard@google.com

Change-Id: Ife602c81b51aa36e0d56b9d628f278a24eed96f6

Review URL: https://webrtc-codereview.appspot.com/44689004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1336 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-03-17 02:23:59 +00:00
yang.zhang@arm.com
ca5b1bd58b Add ScaleAddRows_NEON for ARM32/64 
ARM32/64 NEON versions of ScaleAddRows_NEON are implemented.

BUG=319
TESTED=libyuvTest.Scale* on ARM32/64 with Android
R=fbarchard@google.com

Change-Id: I45b88c2b5f576042ba5b3d8d6f8851257fdb7218

Review URL: https://webrtc-codereview.appspot.com/46379004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1326 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-03-16 02:57:46 +00:00
yang.zhang@arm.com
274c9bce92 Add ScaleRowDown2Linear_NEON for ARM32/64 
ARM32/64 NEON versions of ScaleRowDown2Linear_NEON are implemented.

BUG=319
TESTED=libyuvTest.ScaleDownBy2_Linear on ARM32/64 with Android
R=fbarchard@google.com

Change-Id: I2c7f43a0d56ed4dfded5bdbbb61765d87d65a2ba

Review URL: https://webrtc-codereview.appspot.com/43519005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1307 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-03-03 02:17:16 +00:00
fbarchard@google.com
8cbfc5d41f Change ifdefs for arm 32 and 64 bit so there will only be 32 bit in legacy mode. 
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
 2014-09-15 22:05:01 +00:00
fbarchard@google.com
f67b426bdf Add some more bic's for scale nacl code 
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
 2014-06-17 23:12:55 +00:00
fbarchard@google.com
4b7a04e864 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
 2014-06-17 18:16:29 +00:00
fbarchard@google.com
4e5e44e21e scale neon nacl port 
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
 2014-06-16 17:09:48 +00:00
fbarchard@google.com
37ad8b6507 Port libyuv neon to nacl - compare 
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
 2014-05-21 19:04:15 +00:00
fbarchard@google.com
1f923e3ea6 Declare parameters that are unused, since C does not let you give a type without name. 
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
 2014-01-07 05:42:27 +00:00
fbarchard@google.com
06ed625808 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
 2013-12-26 19:17:21 +00:00
fbarchard@google.com
c2295807bd 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
 2013-12-02 15:57:39 +00:00
fbarchard@google.com
dbe4814361 Move scale row functions to scale_win etc 
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
 2013-11-28 01:16:15 +00:00
fbarchard@google.com
f2aa91a1ac replace static const with static to avoid internal compiler error with gcc 
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
 2013-08-02 17:48:24 +00:00
fbarchard@google.com
2c4e3993c0 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
 2013-06-10 16:21:57 +00:00
fbarchard@google.com
8ffe78abd2 Scale down by 4 used 3rd pixel 
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
 2013-05-30 07:14:14 +00:00
fbarchard@google.com
8b54a8f9f2 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
 2013-05-29 19:29:46 +00:00
fbarchard@google.com
83a63e65a6 Change YUV_DISABLE_ASM to LIBYUV_DISABLE_NEON, LIBYUV_DISABLE_MIPS, LIBYUV_DISABLE_X86 
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
 2013-02-27 00:20:29 +00:00