generic-library/webp
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
3,619 Commits 16 Branches 35 Tags 10 MiB
7d67a1646d
Commit Graph

3619 Commits

This Branch
This Branch
All Branches
Author SHA1 Message Date
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
James Zern
dd7e83cca7 tiffdec,ReadTIFF: ensure data_size is < tsize_t max 
Change-Id: I0ad9589a7f994294100e1c5a38abf6ebe417f8a9
 2017-05-17 13:02:06 -07:00
James Zern
d988eb7b39 tiffdec,MyRead: quiet -Wshorten-64-to-32 warning 
Change-Id: I7e2c7a9b80278b3056151c74a939b0f55bbbc90c
 2017-05-17 12:06:53 -07:00
hui su
dabda70733 webpinfo: add support to parse Alpha bitstream 
BUG=webp:330

Change-Id: I9ed0923d19558052d63bdbe93a542c51595fdce7
 2017-05-17 09:35:58 -07:00
James Zern
4c1176432a webpinfo: correct background color output, BGRA->ARGB 
bgcolor is stored little-endian, byte order is BGRA, with A being the
high byte

Change-Id: I8327380c039634120ee2313044781a5651513dcb
 2017-05-16 11:51:44 -07:00
Vincent Rabaud
defc98d72c Doc: clarify the role of quality in WebPConfig. 
Change-Id: I13706847f6263b9bb91eaf3c9284dd2d42ea7a85
 2017-05-15 18:01:35 +02:00
Vincent Rabaud
d78ff78095 Merge "Fix code to compile with C++." 2017-05-15 15:11:11 +00:00
Vincent Rabaud
c8f14093ac Fix code to compile with C++. 
Change-Id: I324236440cb853cb3c8fb278ef22449cd9772ad7
 2017-05-15 16:22:03 +02:00
James Zern
497dc6a70d pnmdec: sanitize invalid header output 
Change-Id: I034cb00047f725e1cd106d3677db567f1efa0847
 2017-05-15 04:57:45 -07:00
Pascal Massimino
d78e5867ff Merge "configure: test for -Wconstant-conversion" 2017-05-13 06:10:21 +00:00
James Zern
481e91eb86 Merge "pnmdec,PAM: set bytes_per_px based on depth when missing" 2017-05-13 00:47:36 +00:00
James Zern
93b1275373 configure: test for -Wconstant-conversion 
Change-Id: Idf442e35dd8b414c30b8f53ade6f32dfa6f74d39
 2017-05-12 17:02:06 +02:00
James Zern
645f0c53de pnmdec,PAM: set bytes_per_px based on depth when missing 
this avoids setting bytes_per_px < depth causing an undersized
allocation for rgb import resulting in a crash.

BUG=b/37930872

Change-Id: I32a86f91528acc084a53d08c9fde9f2f1270a603
 2017-05-10 19:15:50 -04:00
Pascal Massimino
e91546054d Merge "vwebp: activate GLUT double-buffering" 2017-05-10 05:46:20 +00:00
Pascal Massimino
818d795b09 vwebp: activate GLUT double-buffering 
This prevents the flickering of animated webp + alpha.

Change-Id: I335a434ccc6c90e32528c9832555a38cc0f71cc4
 2017-05-10 05:16:47 +00:00
hui su
d63e6f4b23 Add a man page for webpinfo 
BUG=webp:330

Change-Id: I7b02274401c935affa173a49a883a39272b6dcc3
 2017-05-09 16:14:44 -07:00
Pascal Massimino
4d7084350e Merge "NEON: implement ConvertRGB24ToY/BGR24/ARGB/RGBA32ToUV/ARGBToUV" 2017-05-09 15:33:34 +00:00