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Author SHA1 Message Date
Vincent Rabaud
c9b45863e2 Split off common lossless dsp inline functions. 
Change-Id: I64f96897b11d1c21f033c7e47b21edccb5c68738
 2016-09-12 17:35:08 +02:00
Pascal Massimino
490ae5b13d smartYUV: improve initial state for faster convergence 
For speed reason, the 'gray' plane was initialized with the same
value for 2x2 block. But in some cases (underlying camera noise, e.g.),
it could lead to instability during iteration, noise amplification,
and visible banding.
Using a precise (but slower) initialization solves the issue, and
since the convergence is faster, we might actually gain some speed.

Change-Id: I81c42101497e7096a8f60289d710f5a3bcb0ddea
 2016-09-09 18:29:32 +02:00
Pascal Massimino
894232be56 smartYUV: fix and simplify the over-zealous stop criterion 
We usually need at least 2 iterations to converge
(and usually not much more after that). Only 1 was not enough.

Change-Id: Iaf802ea81afa2596f4ba045c92f5eaff61623b7b
 2016-09-09 10:10:13 +02:00
Hui Su
8de08483b6 Remove unused code in webpi.h 
Change-Id: If927530034cefa0da62ddfde588833aafec51d4d
 2016-09-08 22:46:32 -07:00
James Zern
41cab7fe0f imageio/Android.mk: correct imagedec dependencies 
this relies on imageio_util; remove the reference for dwebp as this does
not directly rely on it.

Change-Id: I09b863ae0dfe2e9c4929ff6b77e9310bb870ce35
 2016-09-08 20:03:07 -07:00
James Zern
82c91c708e Merge "libimageenc.a: extract image-saving code from dwebp" 2016-09-09 03:00:20 +00:00
Pascal Massimino
af1ad3e2dd libimageenc.a: extract image-saving code from dwebp 
BUG=webp:277
Change-Id: I2c0e1df7b13b1f77474b5478048fef022e90f77a
 2016-09-08 19:11:26 -07:00
Pascal Massimino
dd7309e30c Merge "doc: use two's complement explicitly for uint8->int8 conversion" 2016-09-07 05:53:38 +00:00
Pascal Massimino
6105777e8c Merge "add gif2webp to CMake" 2016-09-06 12:11:05 +00:00
Pascal Massimino
13ae011e4c doc: use two's complement explicitly for uint8->int8 conversion 
BUG=webp:225

Change-Id: I6bad131e275dbd992484e95a1b834010121281b8
 2016-09-05 10:57:56 -07:00
Vincent Rabaud
4bda0cfba4 add gif2webp to CMake 
Change-Id: I9eec1e590ae5b523e0dd65a2ed9d094696346f5a
 2016-09-05 18:12:24 +02:00
James Zern
6029c7fe68 Merge "remove mention of fragment, frgm, FRGM, etc." 2016-09-02 17:46:51 +00:00
Pascal Massimino
545c147fd8 remove mention of fragment, frgm, FRGM, etc. 
demux.h still has a 'fragment' field, for historical reasons.

bumped the ABI number in mux.h

Change-Id: I73299aa2e96b1f2e44f5cebfd84c597d1db12bff
 2016-09-02 14:43:12 +02:00
James Zern
5b46f7fc80 cwebp.1: improve some grammar 
Change-Id: Id849d7e0d7573f5b8d3b2e807d95e9c628f03b1e
 2016-09-02 00:08:14 -07:00
hui su
9e478f808e dec/vp8l.c: add assertions in EmitRescaledRowsRGBA/YUVA 
Add assertions to make sure the number of lines that are imported
into rescaler is as expected.

Change-Id: I3e9e4202e696bb09f7aa54519285b6b0deb84c1a
 2016-09-01 20:58:37 -07:00
hui su
43bd895879 Make gif transparent color to be transparent black 
Change it from transparent white to transparent black, which matches
the transparent color assumed in Webp dispose-to-background method.

Also pre-multiply background colors before comparison in anim_diff,
just as what is done with regular pixel values.

Change-Id: I5a790522df21619c666ce499f73e42294ed276f2
 2016-09-01 16:50:14 -07:00
Pascal Massimino
0887fc2d85 Merge "get_disto: add a '-o file' option to save a diff map" 2016-08-31 06:24:49 +00:00
Pascal Massimino
0de48e187d get_disto: add a '-o file' option to save a diff map 
also: -scale option is useful for using the maximum range.

Change-Id: I8ede7132b08ece7d3b6f699b710ab2ef3fb0b734
 2016-08-31 05:31:30 +00:00
James Zern
0a57ad0dc5 cosmetics: WebPSafeAlloc -> WebPSafeMalloc 
Change-Id: I0c47b827cadc18cf739f1648c605311c9bc41375
 2016-08-30 18:34:37 -07:00
James Zern
0a4699bcc9 Merge "WebPPictureDistortion(): free() -> WebPSafeFree()" 2016-08-31 01:27:06 +00:00
hui su
29fedbf58b Anim_encoder: correctly handle enc->prev_candidate_undecided_ 
Set enc->prev_candidate_undecided_ as 0 when a frame is not chosen
as a possible keyframe, so that the dispose method can be
dispose-to-background.

Change-Id: If2899f5dbc06fb53705fb8240072ab6440a6de12
 2016-08-30 15:25:09 -07:00
Pascal Massimino
32dead4ee3 WebPPictureDistortion(): free() -> WebPSafeFree() 
missed one!

Change-Id: I643170451b3ac07c748b70a9abfe8af17a716b24
 2016-08-30 15:43:23 +02:00
Vincent Rabaud
85cd5d061c Smarter LZ77 for uniform regions. 
No need to find backward references for pixels in uniform regions
by looking at all pixels.
Only pixels at the same distance from the end need to be compared to.

Change-Id: I4f187e965f0667d3a929775726a412f7e69f6473
 2016-08-26 09:53:49 +02:00
Pascal Massimino
6585075f8a Change PixelsAreSimilar() to handle black pixels correctly. 
if src_{r,g,b} = 0, any value of src_a or dst_a such that
   abs(src_a - dst_a) <= max_allowed_diff
was making the test pass, despite being very different-looking pixels.

The fix is to require same values for src_a and dst_a before attempting
an r/g/b comparison.

Change-Id: If3a55a229eab3904ed454f20065e49e35c39f25c
 2016-08-25 07:33:18 +02:00
Pascal Massimino
c0a27fd2af vwebp: Clear previous frame when a key triggers a redraw 
otherwise, transparent areas were accumulating.

Change-Id: I066a96a2bcf0cac750b3df0c02229542b1ed3473
 2016-08-24 11:04:17 +02:00
Pascal Massimino
57a5e3b6a5 webp_quality should return '0' in case of success. 
-> clarify the return value in case of error

Change-Id: I6f1e675c80d237b302fada28e7612a684b931c7a
 2016-08-20 21:07:31 +02:00
Vincent Rabaud
7f1b897bee Faster stochastic histogram merging. 
Constants are such that brute force is sometimes faster for some
data (mostly big images it seems).

Change-Id: I90aef536408683535e3b09ddfa2e77a9834038f6
 2016-08-19 14:52:57 +02:00
James Zern
48c810b85c Merge "remove WEBP_FORCE_ALIGNED and use memcpy() instead." 2016-08-18 03:38:44 +00:00
Pascal Massimino
3884972e3f remove WEBP_FORCE_ALIGNED and use memcpy() instead. 
BUG=webp:297

Change-Id: I89a08debec7bb1b3f411c897260ab1bb63f77df2
 2016-08-17 20:16:03 -07:00
Pascal Massimino
485cac1a88 switch libimagedec.a and libimageio_util.a to avoid undefined symbol 
gcc-4.8.3 was giving the undefined reference to ImgIoUtilReadFile and
ImgIoUtilCopyPlane when linking libimagedec.a

Change-Id: I8b85ab3a860602535629d0bb541a39754413728e
 2016-08-17 19:48:08 -07:00
James Zern
005e15b10a Merge "{extras,mux}/Makefile.am: add missing -lm" 2016-08-17 18:18:39 +00:00
skal
6ab496ed22 fix some 'unsigned integer overflow' warnings in ubsan 
I couldn't find a safe way of fixing VP8GetSigned() so i just
used the big-hammer.

Change-Id: I1039bc00307d1c90c85909a458a4bc70670e48b7
 2016-08-16 23:18:27 -07:00
James Zern
8a4ebc6ab0 Revert "fix 'unsigned integer overflow' warnings in ubsan" 
This reverts commit e44f5248ff.

contains unintentional changes in quant.c

Change-Id: I1928f072566788b0c9ea80f6fbc9e571061f9b3e
 2016-08-16 16:55:56 -07:00
Pascal Massimino
9d4f209f80 Merge changes I25711dd5,I43188fab 
* changes:
  Fix assertions in WebPRescalerExportRow()
  Add descriptions of default configuration in help info.
 2016-08-16 22:13:23 +00:00
skal
e44f5248ff fix 'unsigned integer overflow' warnings in ubsan 
I couldn't find a safe way of fixing VP8GetSigned() so i just
used the big-hammer.

Change-Id: I1039bc00307d1c90c85909a458a4bc70670e48b7
 2016-08-16 15:04:41 -07:00
Hui Su
27b5d991e2 Fix assertions in WebPRescalerExportRow() 
Change-Id: I25711dd54e71c90a25f7b18e0ef9155e8151a15e
 2016-08-16 14:32:48 -07:00
Hui Su
74f6f9e793 Add descriptions of default configuration in help info. 
Change-Id: I43188fab5f57bd45aa3e564df52e36cc37b1bb2f
 2016-08-16 14:32:46 -07:00
James Zern
aaf2530cc3 {extras,mux}/Makefile.am: add missing -lm 
+ libwebpmux.pc

quality_estimate.c, anim_encode.c rely on functions from math.h

BUG=webp:306

Change-Id: I3a8eb48febfd52bfbeb04f4dc615ccbed72926f7
 2016-08-15 22:32:46 -07:00
hui su
1269dc7cfb Refactor VP8LColorCacheContains() 
Return key/index if the query is found, and -1 otherwise.
The benefit of this is to save a hashing computation.

Change-Id: Iff056be330f5fb8204011259ac814f7677dd40fe
 2016-08-12 15:16:06 -07:00
James Zern
40872fb2e6 dec_neon,NeedsHev: micro optimization 
trade 2 compares + 1 logical or for max + compare

Change-Id: I785ad8efdc64db2d0609456d6e7af795ab2117d8
 2016-08-08 20:12:30 -07:00
Vincent Rabaud
7b54e26bac Add a CMake option for WEBP_SWAP_16BIT_CSP. 
Change-Id: I79ed6cbce9563bf7ca97fc2e10ec3e75b6b8ab5b
 2016-08-05 09:45:34 +02:00
Vincent Rabaud
d2223d8d6c Fix missing cpu-features for Android. 
Change-Id: Ief13b7c63b96194970b00a5732aa080f794e7ae6
 2016-08-05 09:26:32 +02:00
James Zern
bf16a4b4f8 Merge "cpu.cmake: improve webp_check_compiler_flag output" 2016-08-05 01:53:16 +00:00
James Zern
ee1057e3b1 cpu.cmake: improve webp_check_compiler_flag output 
WEBP_HAVE_FLAG_LOCAL -> WEBP_HAVE_FLAG_${WEBP_SIMD_FLAG} this will
include the flag being tested in the output:
-- Performing Test WEBP_HAVE_FLAG_NEON

Change-Id: I1c0a143a857b16e4eb1fcf8b23c176380a5fef29
 2016-08-03 19:55:18 -07:00
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
James Zern
d2e4484ef3 dsp/Makefile.am: put msa source in correct lib 
upsampling_msa.c was incorrectly included in the neon convenience lib
+ sort msa sources

Change-Id: I7c4883f16a5c2fed12bfa0e8d8d6a7acd5d4fb84
 2016-08-03 17:50:45 -07:00
Pascal Massimino
c7f66c82b3 Merge "utils/thread.c,cosmetics: join a few lines" 2016-07-28 04:08:48 +00:00
Pascal Massimino
98d8f295b1 Merge "examples/Makefile.am,cosmetics: sort binary targets" 2016-07-28 01:17:36 +00:00
James Zern
39f4ffbcdc utils/thread.c,cosmetics: join a few lines 
Change-Id: I94c142fc6f9e6823ce16ca723145354eae4db9af
 2016-07-27 18:10:18 -07:00
Pascal Massimino
a86ce2b1e2 Merge "extras/Makefile.am: don't install libwebpextras" 2016-07-28 01:07:56 +00:00