dany/libwebp
1
0
Fork 0
mirror of https://github.com/webmproject/libwebp.git synced 2025-02-13 23:42:53 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity
3,768 Commits 35 Branches 66 Tags
Commit Graph

828 Commits

Author SHA1 Message Date
James Zern
9add62b581 bump version to 0.6.1 
libwebp{,decoder} - 0.6.1
libwebp libtool - 7.1.0
libwebpdecoder libtool - 3.1.0

mux - 0.4.1
libtool - 3.1.0

demux - 0.3.3
libtool - 2.3.0

Change-Id: If4a95c6e9829d4a608028ee9258b5c2b7af60c37
 2017-11-24 21:03:05 +00:00
James Zern
083507f244 right-size some tables 
Change-Id: I5e894fd3f0f4b666512108495d8cecb34f65e119
 2017-11-23 08:40:58 +00:00
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
f593d71a64 enc: disable pic->stats/extra_info w/WEBP_DISABLE_STATS 
Change-Id: I4ca3fa45710bd6bbe131b2ae047b1e268241657c
 2017-11-22 17:04:01 -08:00
James Zern
541179a9a5 Merge "predictor_enc: fix build w/--disable-near-lossless" 2017-11-23 01:02:59 +00:00
James Zern
5755a7ec53 predictor_enc: fix build w/--disable-near-lossless 
Change-Id: I0d01cdc77e72663f1cf778e3cf3066cd54aa5439
 2017-11-22 15:02:21 -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
e65b72a368 Merge "introduce WebPHasAlpha8b and WebPHasAlpha32b" 2017-11-21 06:21:44 +00:00
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
James Zern
c184665ecd WebPPictureAllocARGB: align argb allocation 
Change-Id: Ib390e8bbb97b38316a38af6a33e8a26bd050ee16
 2017-11-16 20:19:09 -08:00
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
5cfb3b0f6c normalize include guards 
some fell out of sync after:
668e1dd4 src/{dec,enc,utils}: give filenames a unique suffix

Change-Id: I280d3b3f44797f3bfb4835784add50a41cdd3793
 2017-10-21 00:06:23 -07:00
Pascal Massimino
e51bdd439c remove unused VP8TokenToStats() function 
BUG=webp:355

Change-Id: I0ad6f13003ef7201431c54c7db395254191de67c
 2017-10-20 04:29:45 -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
Vincent Rabaud
e14ad93c0a Make sure we reach the full range for alpha blending. 
255*255*257>>16 == 254 while we want 255.

BUG=webp:360

Change-Id: I2b9ac18f8802145f5a3d500c149ad9eceacbd75b
 2017-10-05 16:53:57 +02:00
Vincent Rabaud
a80fcc4ae1 ifdef code not used by Chrome/Android. 
Change-Id: Id086f6fd602b1fe3dc9034764b6a920a696ff1d2
 2017-08-31 14:02:05 +02:00
Vincent Rabaud
3993af127e Fix signed integer overflows. 
Change-Id: I62c9949f0edac58d69d991d6be5f85ae9e4d62a9
 2017-08-31 11:56:42 +02:00
Vincent Rabaud
c5e34fba66 function definition cleanup 
Change-Id: I1f6bb4405f09c0c863d0bd1c77340636abdbae69
 2017-08-29 14:09:35 +02:00
Vincent Rabaud
289e62a313 Remove declaration of unimplemented VP8ApplyNearLosslessPredict 
Change-Id: I1bebea099a06bccfdd103ba0557320d6ad68af38
 2017-08-23 17:16:29 +02:00
Vincent Rabaud
24ad2e3c99 add const to two variables 
Change-Id: I97374ccbf118baa59425346ffc439036a4482bf4
 2017-08-07 23:02:15 +02:00
Pascal Massimino
46efe062b8 Merge "Allow the lossless cruncher to work for alpha." 2017-08-07 21:00:02 +00:00
Vincent Rabaud
8c3f9a4706 Speed-up LZ77. 
No need to look for a bigger maximum reach if we reach the end
of the image.

Change-Id: I56b166f9266f15cdff5aa59a75559972db19858f
 2017-08-07 21:01:27 +02:00
Vincent Rabaud
1aef4c710b Allow the lossless cruncher to work for alpha. 
Change-Id: I7185e75404fae8c739e0536026f4687d25decad7
 2017-08-07 20:58:05 +02:00
Vincent Rabaud
b8821dbd81 Improve the box LZ77 speed. 
For a pixel, we look for the longest match starting in a window around it.
For the following pixel, the previous result can be used and smaller
search window is used.

Change-Id: Ice16f9a7c8754099d068380848f0d77de3f756ac
 2017-08-06 20:15:20 +02:00
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
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
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
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
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
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
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
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
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
Vincent Rabaud
e644c556c5 Fix bad bit writer initialization. 
When re-initializing a bit writer, we could set invalid values because
the bit writer was not big enough.

Change-Id: Id25ab6712603245a5a12d5f4a86fe35a9a799a5d
 2017-05-02 18:59:01 +02:00
Pascal Massimino
b62cdad287 Merge "Implement a cruncher for lossless at method 6." 2017-04-28 14:37:57 +00:00
skal
da3e4dfb6f use the exact constant for the gamma transfer function 
As found in BT2020 reference:
https://www.itu.int/dms_pubrec/itu-r/rec/bt/R-REC-BT.2020-2-201510-I!!PDF-E.pdf

The difference in output-size/PSNR are under the noise level.

Change-Id: I42c12000b61dca791226f3af772c5bd9d58201b8
 2017-04-27 11:53:15 -07:00
Vincent Rabaud
adab8ce020 Implement a cruncher for lossless at method 6. 
Go over the whole compression step for each of the
transforms and pick the best one.

Change-Id: I3a1b1458348c468558be0fcf491038a5724c9364
 2017-04-27 18:16:04 +02:00
Vincent Rabaud
0dcd85b6c4 Fix VP8ApplyNearLossless to respect const and stride. 
Change-Id: I94a90220b5a175228fc48a4b299847b60cf5081b
 2017-04-25 19:04:52 +02:00