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Author SHA1 Message Date
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
6878d42720 fix memory leak in SDL_Init() 
we use a static guard to only call SDL_Init() once.

Another option would be to call SDL_Quit(), but it doesn't seem to be
doing anything.

Also, fix the HTML code and add 'use strict' directive.

BUG=webp:354

Change-Id: I3c6421e2c1c8cc200556cd4092a0ead9a8b054ef
 2017-07-31 12:47:02 -07:00
Pascal Massimino
461ae5551b Merge "configure: fix warnings in sdl check" 2017-07-18 07:48:34 +00:00
James Zern
62486a2206 configure: test for -Wundef 
Change-Id: Ia4bcde5276ae9572c5b3152e578d59a4e3552988
 2017-07-11 16:12:36 -07:00
James Zern
92982609bc dsp.h: fix -Wundef w/__mips_dsp_rev 
Change-Id: I552a543c7b039774041b43ace75b0cbea566b119
 2017-07-11 16:12:32 -07:00
James Zern
0265cede89 configure: fix warnings in sdl check 
correct shell syntax, drop trailing ','

Change-Id: I0535bdf92f03e17902a844d8e7d742b351ce4822
 2017-07-11 15:38:18 -07:00
James Zern
88c73d8a7a backward_references_enc.h: fix WINDOW_SIZE_BITS check 
this check was relocated in:
b903b80c Split cost-based backward references in its own file.

quiets -Wundef

Change-Id: I7f7a4773fb8cc77ca9f671b11f50d5db2275d415
 2017-07-11 15:36:14 -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
Vincent Rabaud
1b526638b8 Clean-up some CMake 
- some image libraries define _INCLUDE_DIR and not INCLUDE_DIRS.
- CMakePushCheckState is a non-destructive way of changing the
CMAKE_REQUIRED_* variables.

Change-Id: I7d318a0ddf9754a5c047f47ba1713f9f94e1ec1c
 2017-07-10 16:29:33 +02:00
James Zern
87f57a4b62 Merge "cmake: fix gif lib detection when cross compiling" 2017-07-07 07:55:48 +00:00
James Zern
b34a9db1a1 cosmetics,dec_sse2: remove some redundant comments 
Change-Id: I5a59d6dde9b6638b318f36d51d0d53870a3de273
 2017-07-06 23:19:18 -07:00
James Zern
471c5755fc cmake: fix gif lib detection when cross compiling 
GIF find_package only locates the header and library, it doesn't fail
compile tests when detecting the version, but falls back to 3 (as of at
least cmake 3.7.2). Make sure the library links to avoid incorrect
detection when cross compiling.

Change-Id: I0224180bbdf800ab261a9333236730b23c006e69
 2017-07-06 15:33:31 -07:00
James Zern
c793417a3c cmake: disable gif2webp if gif lib isn't found 
Change-Id: I218d5c0e3f4a82905c743705382cf02d26b29e6d
 2017-07-06 15:33:01 -07:00
James Zern
dcbc1c881a cmake: split gif detection from IMG deps 
gifdec isn't part of imageio lib, it's only used by gif2webp.

Change-Id: I70bff378a32f8fb2ebb8a5a7701049ffff7f7992
 2017-07-06 15:32:55 -07:00
James Zern
66ad84f0f9 Merge "muxread: remove unreachable code" 2017-07-05 23:48:45 +00:00
Pascal Massimino
50ec3ab790 muxread: remove unreachable code 
IDX_UNKNOWN chunks are handled separately in WebPMuxGetChunk()

Change-Id: Iaa0d3a1cd1080264c27671637551f52f71d73b07
 2017-07-05 15:47:50 -07:00
hui su
7d67a1646d Lossy encoding: smoothen transparent areas to improve compression 
If "exact" is false, we can modify the luma samples in fully transparent
areas to facilitate lossy compression. Experiments on some PNG images
show compression improvement of more than 20%.

Change-Id: I1a728cfa920a6652bc1f600d87c01f7f648c4942
 2017-07-05 10:03:01 -07:00
James Zern
e50650c77f Merge "fix signature for DISABLE_TOKEN_BUFFER compilation" 2017-07-02 07:33:52 +00:00
Pascal Massimino
671d2567d4 fix signature for DISABLE_TOKEN_BUFFER compilation 
Change-Id: Idb7aa2503c7870ef3b15a23325832428d47ae7c6
 2017-07-01 14:46:28 -07:00
James Zern
d67555809f cpu.cmake: use unique flag to test simd disable flags 
this avoids the result being cached in a common variable causing
potentially incorrect results in future tests and improves the logging
output

BUG=webp:351

Change-Id: I4b3110beec38f505fc8f835c3ea689a7d81a36bb
 2017-06-28 19:13:34 -07:00
Vincent Rabaud
28914528e1 Merge "Remove the argb* files." 2017-06-25 15:57:17 +00:00
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
James Zern
3b62347b0f README: correct cmake invocation note 
the default invocation given generates makefiles, not a configure script

Change-Id: Ia65b120289b497c2f2981fec330456682d11162a
 2017-06-21 16:36:09 -07:00
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
Pascal Massimino
7b250459d6 Merge "Re-use the transformed image when trying several LZ77 in lossless." 2017-06-20 11:53:01 +00:00
Vincent Rabaud
e132072f0b Re-use the transformed image when trying several LZ77 in lossless. 
Change-Id: If879b960131ba26859f8e4719a4c74cec1e0aaa8
 2017-06-19 17:30:01 +02:00
Vincent Rabaud
5d7a50efee Get code to compile in C++. 
Change-Id: I2f56e6b71e33ffecdba9e4fa9ef8f891c88f850f
 2017-06-19 17:12:29 +02:00
James Zern
7b012987a2 configure: test for -Wparentheses-equality 
Change-Id: Id91d581781f77e6cc92cc33dfd3c8ea37e130164
 2017-06-15 16:07:07 -07:00
Vincent Rabaud
f0569adb93 Fix man pages for multi-threading. 
BUG=webp:336

Change-Id: I70d3dfb8a532c1f2b80bd08cc62e833962cb4b34
 2017-06-15 08:49:04 +00:00
Pascal Massimino
f1d5a397db multithread cruncher: only copy stats when picture->stats != NULL 
BUG=webp:336

Change-Id: I6dfbbdcf61a6cb455f6cbf3dcd7f4c46578f42aa
 2017-06-14 21:49:13 +02:00
Vincent Rabaud
f8c2ac15af Multi-thread the lossless cruncher. 
BUG=webp:336

Change-Id: I8e861d6a61d51a5cdc4bbd00cd4f17d4ff006d2f
 2017-06-14 16:50:36 +02:00
Vincent Rabaud
a88c6522f6 Merge "Integrate a new LZ77 looking for matches in the neighborhood of a pixel only." 2017-06-13 13:15:48 +00:00
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
355c3d1bc7 Integrate a new LZ77 looking for matches in the neighborhood of a pixel only. 
Change-Id: Ie2bbfee0a8d154b58f4a3068f3f634b7dad4c12d
 2017-06-08 15:19:40 +02:00
Vincent Rabaud
a1779a017b Refactor LZ77 handling in preparation for a new method. 
Change-Id: If305c328c8f508bd778d1af108e4eb979fbd2eca
 2017-06-07 16:43:04 +02:00
James Zern
67de68b5d9 Android.mk/build.gradle: fix mips build with clang from r14b 
fixes unknown instruction errors for e.g.,
usw    $15, 0($8)

BUG=webp:343

Change-Id: I71d00527fecd2370a40f6bd12f4e361fb525477f
 2017-06-03 13:06:54 -07:00
Vincent Rabaud
f209a5481e Use the plane code and not the distance when computing statistics. 
As backward references use the plane code when checking the cost
of a distance, statistics used to compute the cost should use it too.
This provides a small compression improvement at no speed cost.

Change-Id: Icade150929ee39ef6dc0d8b1fc85973086ecf41d
 2017-06-01 17:08:43 +02:00
Vincent Rabaud
b903b80c30 Split cost-based backward references in its own file. 
Change-Id: I4d8281e69b0e41f7c90337e5be70a6c65b044086
 2017-06-01 16:22:31 +02:00
Vincent Rabaud
498cad34be Cosmetic changes in backward reference. 
Change-Id: Ieb3dd65a647c034f67cf029e7b03f843b4650b0f
 2017-06-01 14:20:16 +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
hui su
af6deaffa0 webpinfo: handle alpha flag mismatch 
Throw a warning for false positive vp8x alpha flag;
throw an error for false negative vp8x alpha flag.

BUG=webp:330

Change-Id: I3933588c9d6d76ecaf515517f7506dea299af638
 2017-05-23 10:28:25 -07:00
Vincent Rabaud
7caef29b86 Fix typo that creeped in. 
Change-Id: I600725721d9df80d6deddc65e00663649a47c941
 2017-05-23 17:10:34 +02:00
Vincent Rabaud
39e19f927c Merge "near lossless: fix unsigned int overflow warnings." 2017-05-23 14:47:47 +00:00
Vincent Rabaud
9bbc0891c6 near lossless: fix unsigned int overflow warnings. 
Change-Id: Ic1111a66761b5821cbbea1c91b038b2327dd20b5
 2017-05-23 13:43:08 +02:00
Pascal Massimino
e1118d624d Merge "cosmetics,FindClosestDiscretized: use uint in mask creation" 2017-05-23 05:47:20 +00:00
Hui Su
186bc9b735 Merge "webpinfo: tolerate ALPH+VP8L" 2017-05-22 17:17:09 +00:00
James Zern
b588729740 cosmetics,FindClosestDiscretized: use uint in mask creation 
Change-Id: Ib1edd74be1c051c10cfe2defadbea48cabe15135
 2017-05-22 08:21:44 -07:00
James Zern
f1784aee04 near_lossless,FindClosestDiscretized: use unsigned ops 
quiets undefined sanitizer warnings of the form:
left shift of 128 by 24 places cannot be represented in type 'int'

Change-Id: I8a389f2ac9238513517180f302f759425eeb7262
 2017-05-22 03:11:03 -07:00
hui su
0d20abb36f webpinfo: tolerate ALPH+VP8L 
Change-Id: I63cec2d021c0bfaa188017813813bddaadfbeacb
 2017-05-19 14:58:44 -07:00
hui su
972104b34b webpmux: tolerate false positive Alpha flag 
Change-Id: I390aebdda31f5320e83b7d7012735947a234650b
 2017-05-19 11:26:37 -07:00