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853 Commits

Author SHA1 Message Date
Pascal Massimino
c1cb86af5f fix 16b overflow in SSE2 
the 'accum' variable can be larger than 15b for large
rescale values.

Assert triggered:
 src/dsp/rescaler_sse2.c:249: RescalerExportRowExpand_SSE2: Assertion `v >= 0 && v <= 255' failed.
 src/dsp/rescaler_sse2.c:350: RescalerExportRowShrink_SSE2: Assertion `v >= 0 && v <= 255' failed.

-> fall back to C implementation in this case for now

Change-Id: I7ea1cb72301cafc1459be403f6a6f4e3cbc89bb1
 2018-04-11 21:25:06 +00:00
James Zern
120f58c3aa Merge "lossless*sse2: improve non-const 16-bit vector creation" 2018-02-20 19:56:07 +00:00
James Zern
8043504f95 lossless*sse2: improve non-const 16-bit vector creation 
use _mm_set1_epi32 instead of _mm_set_epi16 with non-const values;
reduces shifts and ors.

Change-Id: Ie2cb2ab815f642855d03c6f3001223bcac4bd35c
 2018-02-17 17:59:20 -08:00
Pascal Massimino
3b07d32712 Import,RGBA: fix for BigEndian import 
+ simplification of the logic

Change-Id: Ia20ce844793ed35ea03a17cef45838f3d0ae4afa
 2018-02-17 13:07:58 -08:00
James Zern
f4dd92565e remove WEBP_EXPERIMENTAL_FEATURES 
the webp bitstream is considered stable at this point

Change-Id: I4b13f9ed4c45f63785474b097e96cb7bf651be7b
 2018-02-09 10:25:11 -08:00
skal
6de58603b7 MIPS64: Fix defined-but-not-used errors with WEBP_REDUCE_CSP 
BUG=webp:372

Change-Id: Ided3fae748face18138a8050eaced5e0f58120d4
 2018-01-30 17:40:09 -08:00
Vincent Rabaud
cf1c5054c7 Add an SSE4 version of some lossless color transforms. 
Change-Id: Ieac094f684116d1292793b2ca321f6f1a69565b5
 2018-01-24 14:33:25 +01:00
James Zern
05f6fe24c3 upsampling: rm asserts w/REDUCE_CSP+OMIT_C_CODE 
with WEBP_NEON_OMIT_C_CODE the default _C functions won't be set and
with WEBP_REDUCE_CSP the NEON functions won't be either triggering an
assert for an empty table member.

BUG=chromium:792627

Change-Id: I8d2d430eaa37bb92885b61a3dd39f961924a8def
 2017-12-06 17:09:26 -08:00
Vincent Rabaud
55403a9a5a Upsampling SSE2/SSE4 speedup. 
RGB to YUV conversion was not using SSE to finish up the row.
End data is now copied to a buffer big enough to fit in a
SSE register.
(UPSAMPLE_LAST_BLOCK was already using that trick).

Change-Id: Ie539bcbe570a643a774aa88263503c0d2c41890f
 2017-12-05 23:37:06 +01:00
Vincent Rabaud
807b53c47e Implement the upsampling/yuv functions in SSE41 
Change-Id: If122da22b74a974262063d232f6ca0ab902ff64e
 2017-12-04 22:29:43 +01:00
Pascal Massimino
1af0df7662 Merge "WEBP_REDUCE_CSP: restrict colorspace support" 2017-11-27 20:08:55 +00:00
Pascal Massimino
6de20df02c WEBP_REDUCE_CSP: restrict colorspace support 
only supported ones are: RGBA/BGRA/rgbA/bgrA (decoder)
as well as: WebPPictureImportRGB/RGBX/RGBA (encoder).

(note: extras/get_disto is affected too)

Change-Id: If6c4f95054ca15759c4e289fb3b4c352b3521c2c
 2017-11-26 08:44:08 +00:00
Pascal Massimino
0df22b9eed WEBP_REDUCE_SIZE: disable all rescaler code 
BUG=webp:355

Change-Id: Id87cb11902e3fb8544a214308526ea9665ce8440
 2017-11-24 22:08:32 +00:00
Pascal Massimino
a80c46bd87 SSE2 implementation of HasAlphaXXX 
Change-Id: I2548d9a0c252e20ee3cf5f4be736a3703671ecb4
HasAlpha32b: ~3-4x faster
HasAlpha8b: ~7-8x faster
 2017-11-23 15:02:21 +01:00
James Zern
b299c47eac add WEBP_REDUCE_SIZE 
remove auto-filter (-af) support and make WebPPictureCopy,
WebPPictureIsView, WebPPictureView, WebPPictureCrop, and
WebPPictureRescale noops.

Change-Id: If39d512cc268a0015298a1138dbc94feb86575e5
 2017-11-22 17:35:39 -08:00
James Zern
eab5bab74f add WEBP_DISABLE_STATS 
use to to make WebPPictureDistortion & WebPPlaneDistortion noops and
clear some ssim code.

Change-Id: I9b50b2318b7a114632e5a237a4002f64e95afbbc
 2017-11-22 12:41:17 -08:00
Pascal Massimino
c245343dcb move LOAD8x4 and STORE8x2 closer to their use location 
Change-Id: I674821732d3e607123070e4bbba87d9359c9a4ec
 2017-11-21 23:44:39 -08:00
James Zern
b9e734fd5c dec,cosmetics: normalize function naming style 
Change-Id: I33a2d1b4133db7a6d56d506f5c19670f0268cecd
 2017-11-21 14:31:34 -08:00
James Zern
c188d546b3 dec: harmonize function suffixes 
BUG=webp:355

Change-Id: Iabdfd3fbde906c2e35a7d7c080a8512425eb8ccb
 2017-11-21 13:00:25 -08:00
James Zern
28c5ac8104 dec_sse41: harmonize function suffixes 
BUG=webp:355

Change-Id: Id55f7b2e6288d1d0885d8451fbc59771222073d6
 2017-11-21 12:47:06 -08:00
Pascal Massimino
e65b72a368 Merge "introduce WebPHasAlpha8b and WebPHasAlpha32b" 2017-11-21 06:21:44 +00:00
James Zern
b94cee98fb dec_sse2: remove HE8uv_SSE2 
with gcc-4.8, clang-4.0.1/5 this is no faster (actually up to 2x slower)
than the code generated for memset (0x01010... * dst[-1]). shuffles in
sse4 recover a bit, but performance is still down.

Change-Id: Ie85e8353f8ede559d0b05a1d388787fd18ecc80f
 2017-11-20 20:34:05 -08:00
Pascal Massimino
44a0ee3fa7 introduce WebPHasAlpha8b and WebPHasAlpha32b 
Rewrote WebPPictureHasTransparency() to use them (even for argb).
This is 10% faster, for some reasons.

SSE2 version should be straightforward.
Removes a TODO.

Change-Id: I7ad5848fc5e355e2df505dbcd5a0f42fb6cbab41
 2017-11-20 15:20:29 +01:00
Vincent Rabaud
c462cd0065 Remove useless code. 
The casts are to the same type and the #define not used.

Change-Id: I8d69c3b9dde7a1c53c2ba5a026a653d8c2e1d2a7
 2017-11-08 10:52:49 +01:00
James Zern
b7971d0e22 dsp: avoid defining _C functions w/NEON builds 
when targeting NEON C functions with NEON equivalents won't be used, but
will contribute to binary size. the same goes for sse2, etc., but this
change is primarily concerned with binary sizes for android arm targets.

note '-noasm' or otherwise modifying VP8GetCPUInfo will have no effect
on the use of NEON functions.

this decision can be overridden by defining WEBP_DSP_OMIT_C_CODE to 0.

Change-Id: I47bd453c84a3d341ca39bc986a39eb9c785aface
 2017-10-27 10:54:56 -07:00
James Zern
8d033b14d7 {dec,enc}_neon: harmonize function suffixes x2 
+ neon.h

BUG=webp:355

Change-Id: Ia17c7dfc7d61742a4758823675a2d556a739c389
 2017-10-20 19:00:53 -07:00
James Zern
0295e9815d upsampling_neon: harmonize function suffixes 
BUG=webp:355

Change-Id: I75423abbe0bcea3c98a42e412cc2116be81b5d08
 2017-10-20 19:00:53 -07:00
James Zern
d572c4e52b yuv_neon: harmonize function suffixes 
BUG=webp:355

Change-Id: Ia2f716b459950c18717b062175197d1e6419bf2a
 2017-10-20 19:00:53 -07:00
James Zern
ab9c2500db rescaler_neon: harmonize function suffixes 
BUG=webp:355

Change-Id: I161caa14f7ebbc3ae978b1722472625a77d0a4a4
 2017-10-20 19:00:53 -07:00
James Zern
93e0ce27f4 lossless_neon: harmonize function suffixes 
BUG=webp:355

Change-Id: I4210081a39800b5c2589c443da237269908af666
 2017-10-20 19:00:53 -07:00
James Zern
22fbc50edd lossless_enc_neon: harmonize function suffixes 
BUG=webp:355

Change-Id: I462facaeade4f0f4fc1e96895493306d095a6a9a
 2017-10-20 19:00:53 -07:00
James Zern
447875b47b filters_neon,cosmetics: fix indent 
BUG=webp:355

Change-Id: I9df1119f1ea94868f75253a92c2e878c9290f744
 2017-10-20 19:00:29 -07:00
James Zern
785da7eadd enc_neon: harmonize function suffixes 
BUG=webp:355

Change-Id: Ie59efd271d16f12d21f3c800667dfc0980dc2e68
 2017-10-20 00:18:32 -07:00
James Zern
bc1a251fcf dec_neon: harmonize function suffixes 
BUG=webp:355

Change-Id: I61c9a0c9e24515322955e04afd8c4ea6a44b9319
 2017-10-20 00:14:18 -07:00
James Zern
61e535f1ac dsp/lossless: workaround gcc-4.8 bug on arm 
and all older versions.
force Sub3() to not be inlined, otherwise the code in Select() will be
incorrect.

extends the check add previously in:
637b3888 dsp/lossless: workaround gcc-4.9 bug on arm

BUG=webp:363

Change-Id: I1403b558f8660b764f3a570a3326822d5ef0be29
 2017-10-19 13:05:48 -07:00
Pascal Massimino
0a17f4712c Merge "WIP: list includes as descendants of the project dir" 2017-10-11 08:21:42 +00:00
James Zern
a439972175 WIP: list includes as descendants of the project dir 
#include "(.|..)/..." -> #include "src/..."

Change-Id: I772880aa097a770722043c8a4393552ba38a89b6
 2017-10-10 23:04:05 -07:00
James Zern
d361a6a733 yuv_sse2: harmonize function suffixes 
BUG=webp:355

Change-Id: I02a66f7446c75a10c3ce4766235e5767617d0dce
 2017-10-08 14:06:34 -07:00
James Zern
6921aa6f0c upsampling_sse2: harmonize function suffixes 
BUG=webp:355

Change-Id: I3a02cc717eb7506bd87511d6a17ab1691e84f72c
 2017-10-08 14:06:30 -07:00
James Zern
08c67d3ed1 ssim_sse2: harmonize function suffixes 
BUG=webp:355

Change-Id: I1282559888118b8cb0a46b7f0aa627d26b8838f5
 2017-10-08 14:06:24 -07:00
James Zern
582a1b572a rescaler_sse2: harmonize function suffixes 
BUG=webp:355

Change-Id: I978fd826ff90149c0ffd9d7607dcc6f88082d3e6
 2017-10-08 14:06:19 -07:00
James Zern
2c1b18ba2f lossless_sse2: harmonize function suffixes 
BUG=webp:355

Change-Id: I59d828800c2ab2a36e0ea90f629b74bd57207411
 2017-10-08 14:06:14 -07:00
James Zern
0ac46e818b lossless_enc_sse2: harmonize function suffixes 
BUG=webp:355

Change-Id: I06c64416103c3f3fc0519dd46d64b0a35f9798e4
 2017-10-08 14:06:05 -07:00
James Zern
bc634d57c2 enc_sse2: harmonize function suffixes 
BUG=webp:355

Change-Id: Idd2f289fcf99f12bf36494111b07a8906c99c826
 2017-10-08 14:05:59 -07:00
James Zern
bcb7347c2b dec_sse2: harmonize function suffixes 
BUG=webp:355

Change-Id: Ic0390a4a24a5d8caff5b8af9fc9d59769ec533b1
 2017-10-07 15:14:03 -07:00
James Zern
fb3daad604 cpu: fix ssse3 check 
ssse3 is bit #9 in ecx, bit 1 is sse3. this only controls the check for
slow ssse3 and likely had no ill effect.

Change-Id: I84ce73dc480e1cdbd085e37be06f3f402116c201
 2017-09-29 16:27:47 -07:00
Vincent Rabaud
a5216efc8c Fix integer overflow warning. 
Though the overflow could happen, it does not change the
end results.

Change-Id: I1b84e022a0776d35eab5c5c4fb7d3563f5667bfa
 2017-09-25 11:02:22 +02:00
James Zern
f78da3dea6 add LOCAL_CLANG_PREREQ and avoid WORK_AROUND_GCC w/3.8+ 
this results in a 15-20% speedup for lossy decoding on a N5/S6/CM1

BUG=webp:339

Change-Id: Icdeb84c3e0b8908147ac276b4d8f76c3d565b735
 2017-09-19 20:59:49 -07:00
James Zern
01c426f1e7 define WEBP_USE_INTRINSICS w/gcc-4.9+ 
32-bit builds are neutral to slightly faster using ndk r15c on a
N5/S6/CM1

BUG=webp:339

Change-Id: I94b9442e0ceaf2f5edb2b4026bc8b99cd77c918b
 2017-09-19 20:59:43 -07:00
Pascal Massimino
3822762a6c rationalize the Makefile.am 
one library addition per line, etc...

BUG=webp:355

Change-Id: I95761dea598a382db5632c5187210937e129ff75
 2017-08-29 00:00:14 -07:00
Pascal Massimino
42c79aa66b Merge "Encoder: harmonize function suffixes" 2017-08-09 18:13:57 +00:00
skal
b09307dcde Encoder: harmonize function suffixes 
BUG=webp:355

Change-Id: Ia2fe95db7dfb303f3f64e390d43bc41b8933256c
 2017-08-09 02:41:01 +00:00
James Zern
bed0456d58 Merge "SSIM: harmonize the function suffix" 2017-08-09 02:37:39 +00:00
skal
54f6a3cf3a lossless_sse2.c: fix some missed suffix changes 
BUG=webp:355

Change-Id: If830e3169a4021899ed850aa7edfd94b81fa2cf9
 2017-08-08 14:19:05 -07:00
skal
088f1dcce8 SSIM: harmonize the function suffix 
BUG=webp:355

Change-Id: I751852ddb2abb7319e41e6c7d022ac4f288b4d08
 2017-08-08 08:52:06 -07:00
skal
a0f72a4fe0 VP8LTransformColorFunc: drop an non-respected 'const' from the signature. 
BUG=webp:355

Change-Id: Ie99bf377a55db2950bfbac9423bfe0967623ea5d
 2017-08-07 19:05:01 -07:00
Pascal Massimino
8c934902cd Merge "Lossess dec: harmonize the function suffixes" 2017-08-08 02:04:10 +00:00
skal
622242aaba Lossess dec: harmonize the function suffixes 
BUG=webp:355

Change-Id: I445d64df6aa2e347f41e7af306be12a77e2ac6a5
 2017-08-07 18:22:41 -07:00
skal
1411f02761 Lossless Enc: harmonize the function suffixes 
BUG=webp:355

Change-Id: I8baf506bd2a27095b956ef22a862b071f60c0d72
 2017-08-07 18:02:07 -07:00
James Zern
7beed2807b add missing ()s to macro parameters 
BUG=webp:355

Change-Id: I616c6d3540d6551edd1b1cfdb5bffcf0a044c90f
 2017-08-04 17:02:53 -07:00
James Zern
6473d20b3e Merge "fix Android standalone toolchain build" 2017-08-04 18:25:21 +00:00
James Zern
0c83a8bc69 Merge "yuv: harmonize suffix naming" 2017-08-02 06:35:36 +00:00
James Zern
c6d1db4b36 fix Android standalone toolchain build 
add a check for cpu-features.h and rework some of the ifdef's around
android + neon. for android builds with cpu-features enabled the
*_neon.c files will still need to be flagged correctly (with e.g.,
.c.neon in Android.mk) to properly build them.

BUG=webp:353

Change-Id: I905ce305af0a204e560b915d8665093a3edaceb9
 2017-08-01 22:59:03 -07:00
skal
663a6d9d2e unify the ALTERNATE_CODE flag usage 
Pattern is now:
 #if !defined(FLAG)
 #define FLAG 0   // ALTERNATE_CODE
 #endif
...
 #if (FLAG == 1)
 ...
 #else
  ...
 #endif    // FLAG
...

Removed some unused code / flags:
  WEBP_YUV_USE_TABLE, WEBP_REFERENCE_IMPLEMENTATION,
  experimental code,  VP8YUVInit(), ...

BUG=webp:355

Change-Id: I98deb9189446a4cfd665c13ea8aa1ce6a308c63f
 2017-08-01 20:49:29 -07:00
skal
73ea9f2702 yuv: harmonize suffix naming 
BUG=webp:355

Change-Id: I403c4b3cdfc55b3b1648f98a1d189326a3e660a3
 2017-08-01 20:40:00 -07:00
skal
c4568b47fd Rescaler: harmonize the suffix naming 
BUG=webp:355

Change-Id: I7720502c62f96c780793d3d881eac7b3afae1418
 2017-08-01 23:49:44 +00:00
Pascal Massimino
6cb13b0532 Merge "alpha_processing: harmonize the naming suffixes to be _C()" 2017-08-01 03:38:03 +00:00
James Zern
83a3e69a20 Merge "simplify WEBP_EXTERN macro" 2017-08-01 03:29:12 +00:00
Pascal Massimino
7295fde2e6 Merge "filters: harmonize the suffixes naming to _SSE2(), _C(), etc." 2017-08-01 01:55:48 +00:00
James Zern
8e42ba4c80 simplify WEBP_EXTERN macro 
including the type in the macro doesn't bring much benefit to ordering,
current platforms work with a prefix, this would be insufficient if the
attribute needed to follow the function prototype. this form makes it
easier to override on the command line.

BUG=webp:355

Change-Id: Iba41ec0bb319403054be0e899c4cc472dd932fd9
 2017-07-31 18:27:52 -07:00
skal
331ab34bcd cost*.c: harmonize the suffix namings 
BUG=webp:355

Change-Id: Ic2e60eaab71cdffe1ebf93fc36aaa3eb25bbf08d
 2017-07-31 17:18:32 -07:00
skal
b161f670f8 filters: harmonize the suffixes naming to _SSE2(), _C(), etc. 
BUG=webp:355

Change-Id: I28f464eb13444c3046332cdda3c547f81700ecf4
 2017-08-01 00:09:05 +00:00
skal
dec5e4d330 alpha_processing: harmonize the naming suffixes to be _C() 
BUG=webp:355

Change-Id: Iae8221cd34957764ead21aa46abfc320e5514a4b
 2017-07-31 23:34:24 +00:00
James Zern
92982609bc dsp.h: fix -Wundef w/__mips_dsp_rev 
Change-Id: I552a543c7b039774041b43ace75b0cbea566b119
 2017-07-11 16:12:32 -07:00
James Zern
4ea49f6b82 rescaler_sse2.c: fix WEBP_RESCALER_FIX -> _RFIX typo 
quiets -Wundef

Change-Id: I8f1facf401b6f1ab393005c93086ac3e2ae354d5
 2017-07-11 15:35:27 -07:00
James Zern
b34a9db1a1 cosmetics,dec_sse2: remove some redundant comments 
Change-Id: I5a59d6dde9b6638b318f36d51d0d53870a3de273
 2017-07-06 23:19:18 -07:00
Vincent Rabaud
8acb4942f7 Remove the argb* files. 
Half of the functionality was duplicated.
The rest is about the alpha channel handling so we
might as well put it in the appropriate file.

Change-Id: I8d5ef0afce82cc4842ab7132fd97995c42e6140a
 2017-06-25 14:44:33 +02:00
Vincent Rabaud
7ca0df1363 Have the SSE2 version of PackARGB use common code. 
The common code actually got sped-up by 25% by using the code
from PackARGB.

Change-Id: I94be6ccff2bfe02fff13c8e2698669e6a0d8fc74
 2017-06-20 17:41:14 +02:00
Vincent Rabaud
8f6df1d0b9 Unroll Predictors 10, 11 and 12. 
We see the following speed-ups:
10 -> 13%
11 -> 13%
12 -> 13%

Change-Id: I4734fd388d0f4e508884d0b123976bf2cbe69d2f
 2017-06-08 20:37:47 +02:00
Vincent Rabaud
e4eb458741 lossless, VP8LTransformColor_C: make sure no overflow happens with colors. 
Change-Id: Iec0d07cf1188ba96391cdb1b62131fc1469dfac6
 2017-05-24 11:34:40 +02:00
Pascal Massimino
faf42213f4 NEON: implement ConvertRGB24ToY/BGR24/ARGB/RGBA32ToUV/ARGBToUV 
Change-Id: Ie68aaed36d17f56d998c1b284514860cf5d28b8a
 2017-05-09 15:57:20 +02:00
Pascal Massimino
f768218966 yuv: rationalize the C/SSE2 function naming 
+ implement some easy missing targets in SSE2 (565/4444)

Change-Id: Ib575f7ada2a0ed7309cddd238f8bfc0e8999f145
 2017-04-21 13:52:25 +02:00
Pascal Massimino
52245424b0 NEON implementation of some Sharp-YUV420 functions 
Change-Id: I449ef9c76b06f971f6e2ad7f9db96bf906d8fe1f
new-file: dsp/yuv_neon.c
 2017-04-18 19:22:37 +02:00
Pascal Massimino
28c37ebd5a VP8LEnc: remove use of BitsLog2Ceiling() 
was only used once. Better fall back for Log2Floor.

Change-Id: Ibcc26505440971bffe62ba6aca3d179ca85791d4
 2017-03-20 02:58:16 -07:00
James Zern
80a2218668 ssim.c: remove dead include 
Change-Id: Ia4be534b3b95d5d9f712ff53e530c98b942df860
 2017-02-21 20:17:19 -08:00
Pascal Massimino
693bf74ec0 move the SSIM calculation code in ssim.c / ssim_sse2.c 
Change-Id: I63a63fa7f44f257f2e17e45358b206c23069c448
 2017-02-21 12:53:35 +01:00
Pascal Massimino
4105d565d3 disable WEBP_USE_XXX optimisations when EMSCRIPTEN is defined 
Currently, none are available. If WEBP_HAVE_SSE2 eventually works,
we'll have to refine this conditionals.

BUG=webp:261

Change-Id: Ibc63ee1c013f2a4169eeb85cc8b6317b6420c2ad
 2017-02-08 15:44:20 +00:00
Parag Salasakar
aa893914fc Add clang build fix for MSA 
Change-Id: If139f4ecbdce756c69ba4ae032a70f81179683f8
 2017-02-01 17:45:17 +05:30
Pascal Massimino
4f3e3bbd44 disable GradientUnfilter_NEON 
Compile with XCode, it appears quite slower than the C-version,
especially for arm64.

Change-Id: Ic46dba184a36be454fef674129d2f909003788fc
 2017-01-25 16:33:26 -08:00
Pascal Massimino
79bf46f120 rename the pretentious SmartYUV into SharpYUV 
Change-Id: Ifeeb9cb85896c5f3ba0cc1c2c821f8d00295f69e
 2017-01-20 14:36:21 +01:00
James Zern
668e1dd44f src/{dec,enc,utils}: give filenames a unique suffix 
this avoids duplicates between these trees and dsp/, e.g., enc/tree.c,
dec/tree.c, making pulling the whole library source tree into one target
possible

BUG=webp:279

Change-Id: I060a614833c7c24ddd37bf641702ae6a5eef1775
 2017-01-19 19:09:48 -08:00
Pascal Massimino
71c53f1aeb NEON: speed-up strong filtering 
The sub-expression trick removes two constants and
two vmlal_s8 instructions.

Change-Id: I200022573b4880871b528b13a11a8f3d95def113
 2017-01-19 20:46:48 +00:00
Pascal Massimino
749a45a520 Merge "NEON: implement alpha-filters (horizontal/vertical/gradient)" 2017-01-17 15:13:08 +00:00
Pascal Massimino
74c053b57d Merge "NEON: fix overflow in SSE NxN calculation" 2017-01-17 15:10:54 +00:00
Pascal Massimino
1de931c669 NEON: implement alpha-filters (horizontal/vertical/gradient) 
gradient-filter code is not much faster, but maybe improvable in the future.

Change-Id: Ia16070e409fe8703b02276166f19526917df6b35
 2017-01-17 15:44:46 +01:00
Pascal Massimino
9b3aca404d NEON: fix overflow in SSE NxN calculation 
vmlal_u8() is prone to overflow during the accumulation.
There was a mismatch happening at low q mostly. Because in this
case the distortion is important and the accumulated sum was
later than 16bit-unsigned.

Change-Id: I1a08a2f744bcdf0b26647e61b9ee92a0c2e28fe8
 2017-01-17 11:47:36 +01:00
Pascal Massimino
1c07a3c639 dsp: WebPExtractGreen function for alpha decompression 
+ NEON implementation

Change-Id: I67204f99d6e4c5974718bdf21dad30381978f72c
 2017-01-17 09:33:25 +00:00
Pascal Massimino
8fda56126e Merge "add a kSlowSSSE3 feature for CPUInfo" 2017-01-13 07:01:48 +00:00
Pascal Massimino
86bbd24552 add a kSlowSSSE3 feature for CPUInfo 
This is meant to be used for run-time detection of slow platforms
regarding instructions like pshufb and bsr.

Adapted from libvpx patch: https://chromium-review.googlesource.com/#/c/367731

Change-Id: I2c22fbb9aae699d87a041393ba1ad5f1f21ff640
 2017-01-13 06:19:27 +00:00
Vincent Rabaud
7c2779e95a Get code to fully compile in C++. 
Change-Id: I6d8490c8c9b955d90dcc89ee8a9cf29ca0f93b08
 2017-01-12 18:03:55 +01:00