dany/libwebp
1
0
Fork 0
mirror of https://github.com/webmproject/libwebp.git synced 2025-02-22 03:42:52 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity
1,428 Commits 35 Branches 66 Tags
Commit Graph

10 Commits

Author SHA1 Message Date
skal
5cf7792e40 split quant_levels.c into decoder and encoder version 
-> split libraries further into decoder / encoder
-> add libwebpdecoder.a in Makefile.unix
-> make dwebp link against libwebpdecoder.a in Makefile.unix

also: in makefile.unix, pass EXTRA_FLAGS to LDFLAGS too
(otherwise, -m32 wouldn't work, e.g.)

Change-Id: Ief3da02a729dd86bbaf949ed048836716941657f
 2013-02-24 21:40:39 +01:00
Pascal Massimino
7d732f905b make QuantizeLevels() store the sum of squared error 
(instead of MSE).
Useful for directly storing the alpha-PSNR (in another patch)

Change-Id: I4072864f9c53eb4f38366e8025a2816eb14f504e
 2012-07-23 14:26:56 -07:00
Pascal Massimino
2fc1301577 harmonize authors as "Name (mail@address)" 
Change-Id: I85bfae61a37de75a5ed945a906002de2ef75149f
 2012-07-19 16:09:47 -07:00
Pascal Massimino
d73e63a726 add DequantizeLevels() placeholder 
will be called by alpha post-processing, although doing nothing for now.
Gradient smoothing would be nice-to-have here. Patch welcome!

Change-Id: I534cde866bdc75da22d0f0a6d1373c90e21366f3
 2012-05-22 02:28:19 -07:00
Pascal Massimino
3e863dda61 remove tcoder, switch alpha-plane compression to lossless 
* Method #1 is now calling the lossless encoder on the alpha plane.
Format is not final, it's just a first draft. We need ad-hoc functions.
* removed now useless utils/alpha.*
* added utils/quant_levels.h instead
* removed the TCoder code altogether

Change-Id: I636840b6129a43171b74860e0a0fc5bb1bcffc6a
 2012-05-21 06:24:48 -07:00
James Zern
37a77a6bf4 remove some variable shadowing 
Change-Id: I4348253ec6b50639095b22c4745dc26da0904466
 2012-05-15 14:04:24 -07:00
James Zern
948d4fe94f silence a msvc build warning 
implicit double -> float conversion; avoiding sqrtf (c99) for
compatibility

Change-Id: If9b367dde237fc5173c1445cc60b16aa6ad2821c
 2011-12-19 23:04:01 -08:00
Pascal Massimino
6aac1df17b add a bunch of missing 'extern "C"' 
Change-Id: I8c0ada049ce9fa7ef14164b90d58e999cdabba53
 2011-12-13 10:51:32 -08:00
James Zern
67228734dc cosmetics after e1947a9 
indent / spelling / line length & a couple missing consts

Change-Id: Id282cb7bc6881d4738a3d9fa912b5b22a007c4d2
 2011-11-30 18:51:20 -08:00
Vikas Arora
e1947a9299 Add Alpha encode/decode code. 
Add code for Alpha encoding & decoding. The alpha compression is done
via backward reference counts encoded with Arithmetic encoder (TCoder).
Also provided is lossy Alpha pre-processing option via level-quantizations
using kNN heuristic.

Change-Id: Ib6b13530c1a4ab6493edcb586ad29fe242bc1766
 2011-11-30 17:53:09 +05:30