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28 Commits

Author SHA1 Message Date
James Zern
8599571935 disable CombinedShannonEntropy_SSE2 on x86 
this function produces different results from the C code due to
use of double/float resulting in output differences when compared to
-noasm.

Bug: webp:499
Change-Id: Ia039b168c0a66da723fb434656657ba1948db8ae
 2021-01-18 16:41:44 -08:00
Yannis Guyon
47309ef52d webp: WEBP_OFFSET_PTR() 
Removes undefined behavior of offsetting NULL.

Change-Id: I7c83d0c913c631c091a5fb128f6d6b46b1d116db
 2020-03-20 11:39:06 +01:00
James Zern
c6b75a1966 lossless_(enc_|)sse2: avoid offsetting a NULL pointer 
PredictorSub0_SSE2 doesn't use 'upper' (neither does
VP8LPredictorsSub_C[0]); just pass NULL when dealing with trailing
pixels to avoid undefined behavior when offsetting a NULL pointer

BUG=chromium:1026858,oss-fuzz:19430

Change-Id: I08be8899ed2e34f26aaee34defe68dbd0fe216d3
 2019-12-13 18:33:10 +00:00
James Zern
c84673a62f lossless_enc_sse{2,41}: quiet signed conv warnings 
_mm_set1_epi16 takes a short argument

from clang-7 integer sanitizer:
implicit conversion from type 'int' of value 65280 (32-bit, signed) to
type 'short' changed the value to -256 (16-bit, signed)

Change-Id: Iad64f6209a8c130a7df67515451ded45b3f91702
 2019-06-15 00:22:03 -07:00
Vincent Rabaud
dea3e89983 Split HistogramAdd to only have the high level logic in C. 
Change-Id: Ic9eaebf7128ca0215b49d2a13bde1f5b94a28061
 2018-10-19 14:03:28 +02:00
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
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
0ac46e818b lossless_enc_sse2: harmonize function suffixes 
BUG=webp:355

Change-Id: I06c64416103c3f3fc0519dd46d64b0a35f9798e4
 2017-10-08 14:06:05 -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
Vincent Rabaud
7c2779e95a Get code to fully compile in C++. 
Change-Id: I6d8490c8c9b955d90dcc89ee8a9cf29ca0f93b08
 2017-01-12 18:03:55 +01:00
Vincent Rabaud
1cb638010c Call the C function to finish off lossless SSE loops only when necessary. 
Change-Id: I4e221d80879dc9c90c24d69a40bc5811d73787ad
 2016-12-21 14:25:54 +01:00
Vincent Rabaud
875fafc191 Implement BundleColorMap in SSE2. 
Change-Id: I44cd23647bd0a49330b6b2b3ed08050a5500e58e
 2016-12-21 10:44:31 +01:00
Pascal Massimino
a4bbe4b38b fix indentation 
Change-Id: I5593fb2441f253c6b8cc43949c11909f19184b55
 2016-12-13 22:50:29 -08:00
Pascal Massimino
9cc421675b PredictorSub: implement fully-SSE2 version 
and inline the C-version too.

Predictor #13 is still a hard one.

Change-Id: Iedecfb5cbf216da4e28ccfdd0810286133f42331
 2016-12-13 02:19:35 -08:00
Vincent Rabaud
c9b45863e2 Split off common lossless dsp inline functions. 
Change-Id: I64f96897b11d1c21f033c7e47b21edccb5c68738
 2016-09-12 17:35:08 +02:00
James Zern
b551e587b3 cosmetics: add {}s on continued control statements 
for consistency within the codebase. in some cases simply join the
lines.

Change-Id: I071f061052e274c8a69f651ed4305befb4414a40
 2016-08-03 19:08:59 -07:00
Pascal Massimino
6c1d763119 avoid Yoda style for comparison 
Change-Id: I8ff9f96951e5e8a619f7132455dd281cbf91aa4d
 2016-01-15 23:52:29 -08:00
Vincent Rabaud
8ce975ac82 SSE optimization for vector mismatch. 
Change-Id: I564b822033b59d86635230f29ed6197e306a2c4f
 2016-01-07 18:23:45 +01:00
Vincent Rabaud
2835089d6a Provide an SSE2 implementation of CombinedShannonEntropy. 
CombinedShannonEntropy takes 30% for lossless compression.
This implementation speeds up the overall process by 2 to 3 %.

Change-Id: I04a71743284c38814fd0726034d51a02b1b6ba8f
 2015-12-11 15:12:19 +01:00
James Zern
4741fac42e dsp/lossless_*sse2: remove some unnecessary inlines 
TransformColor / TransformColorInverse are the top-level function
pointer calls

Change-Id: Ieabdb4005ff3e4f9bb3ebcb140ccb6bef5d28f8b
 2015-06-25 21:02:01 -07:00
Pascal Massimino
1819965e0a fix warning ("left shift of negative value") using a cast 
Change-Id: Ie99e8ff87924a1d15e2c5d83bd9adf07dab04e94
 2015-06-24 23:46:09 -07:00
Pascal Massimino
7017001462 SSE2: speed-up some lossless-encoding functions 
optimized: CollectColorRedTransforms, CollectColorBlueTransforms, SubtractGreenFromBlueAndRed

overall effect is sub-1% speed-up, though.

Change-Id: I9cb49af5c56e4c03db417929b0a2cf575d60a5c6
 2015-06-24 20:09:13 -07:00
Pascal Massimino
fc6c75a2a2 SSE2: 53% faster TransformColor[Inverse] 
Changed the code (again) to process 4 pixels at a time. Loop is more
involved, but overall it's faster.

Removed the SSE4.1 implementation which is now slower than SSE2.

Change-Id: I7734e371033ad8929ace7f7e1373ba930d9bb5f1
 2015-06-23 14:52:01 -07:00
Pascal Massimino
49073da6d6 SSE2: 46% speed-up of TransformColor[Inverse] 
Change-Id: If3bf26dc8ed32a7c03cb438e5d5fc996e2e96b5e
 2015-06-23 20:09:04 +02:00
James Zern
b44eda3f60 dsp: add DSP_INIT_STUB 
generates a stub function when the specific architecture is not enabled,
exposing a symbol in the module, avoiding a compiler warning

Change-Id: Ia9336e57466a9b5241b85c1c95838e91c9283147
 2015-04-02 23:55:35 -07:00
James Zern
553051f741 dsp/lossless: split enc/dec functions 
adds lossless_enc*.c; reduces the size of the decode-only so: ~78K
w/gcc-4.8.2 on x86_64.

Change-Id: If5e4610b67d05eba5896bc64bab79e9df92b2092
 2015-03-23 22:57:50 -07:00