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afa3450c11
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Author SHA1 Message Date
skal
afa3450c11 Fix the bug in ApplyPalette. 
The auto-infer logic of detecting the 'Alpha' use case
(via check '(palette[i] & 0x00ff00ffu) != 0' is failing
for this corner case image with all black pixels (rgb = 0)
and different Alpha values.

-> switch generic use-LUT detection

Change-Id: I982a8b28c8bcc43e3dc68ac358f978a4bcc14c36
 2013-05-18 17:03:18 +02:00
pascal massimino
2d6ac422cf Merge "webp/lossless: fix big endian BGRA output" 2013-05-17 00:36:15 -07:00
James Zern
2ca83968ae webp/lossless: fix big endian BGRA output 
Change-Id: I3d4b3d21f561cb526dbe7697a31ea847d3e8b2c1
 2013-05-17 00:32:01 -07:00
Vikas Arora
742110ccce Speed up ApplyPalette for ARGB pixels. 
Added 1 pixel cache for palette colors for faster lookup.
This will speedup images that require ApplyPalette by 6.5% for lossless
compression.

Change-Id: Id0c5174d797ffabdb09905c2ba76e60601b686f8
 2013-05-16 15:44:21 -07:00
skal
2451e47dca misc code cleanup 
* remove dec->skip_
* fix some naming

(no speed diff observed)

Change-Id: I12545ef79d29dd6f893c344d8fb171b0a8c7cc46
 2013-05-15 20:03:15 +02:00
pascal massimino
83db404390 Merge "swig: add python (decode) support" 2013-05-15 00:42:36 -07:00
pascal massimino
eeeea8b530 Merge "swig: cosmetics" 2013-05-15 00:42:08 -07:00
pascal massimino
d5f9b8f383 Merge "libwebp: fix vp8 encoder mem alloc offsetting" 2013-05-15 00:41:14 -07:00
James Zern
d8edd83551 libwebp: fix vp8 encoder mem alloc offsetting 
'mem' was being offset once by DO_ALIGN() then shifted 'nz_size' which
would end up accounting for more than ALIGN_CST and exceed the allocation.

broken since:
  9bf3129 align VP8Encoder::nz_ allocation

Change-Id: I04a4e0bbf80d909253ce057f8550ed98e0cf1054
 2013-05-15 00:31:23 -07:00
skal
8983b83ee1 remove use of bit-fields in VP8FInfo 
(in favor of just plain uint8_t's)

Change-Id: I6187587a4d8a9f5c304a132d98ec42ce24fd244a
 2013-05-15 09:21:30 +02:00
skal
87a4fca25f remove some warnings: 
* "declaration of ‘index’ shadows a global declaration [-Wshadow]"
* "signed and unsigned type in conditional expression [-Wsign-compare]"

Change-Id: I891182d919b18b6c84048486e0385027bd93b57d
 2013-05-14 22:28:32 +02:00
Pascal Massimino
ba8f74e229 Merge "fix for big-endian" 2013-05-14 01:58:06 -07:00
pascal massimino
a65067fa77 Merge "Further reduce memory to decode lossy+alpha images" 2013-05-14 01:56:54 -07:00
Urvang Joshi
64c844863a Further reduce memory to decode lossy+alpha images 
Earlier such images were using roughly 9 * width * height bytes for
decoding. Now, they take 6 * width * height memory.

Change-Id: Ie4a681ca5074d96d64f30b2597fafdca648dd8f7
 2013-05-13 16:24:49 -07:00
Urvang Joshi
332130b9b3 Mux: make a few methods static 
Change-Id: I8a8b0b403116c89933e84c93502a8230026f819e
 2013-05-13 13:26:33 -07:00
Pascal Massimino
4437061735 fix for big-endian 
(Issue #150: https://code.google.com/p/webp/issues/detail?id=150)

Change-Id: Iad46d375a8c5eabae37cde8f55b3e7448601f264
 2013-05-13 10:19:29 -07:00
Pascal Massimino
5199eab516 Merge "add uncompressed TIFF output support" 2013-05-13 08:59:48 -07:00
Pascal Massimino
a3aede9739 add uncompressed TIFF output support 
new option: 'dwebp -tiff ...'
This is a very simple uncompressed-tiff writing method.

Change-Id: Ie2182c8498bce570de3cde363abe1099e18596cb
 2013-05-11 01:46:24 -07:00
pascal massimino
f975b67f66 Merge "gif2webp: Fix signed/unsigned comparison mismatch" 2013-05-11 00:53:20 -07:00
pascal massimino
5fbc734b90 Merge "GetFeatures: Detect invalid VP8X/VP8/VP8L data" 2013-05-11 00:51:39 -07:00
pascal massimino
d5060c873c Merge "mux.h: A comment fix + some consistency fixes" 2013-05-11 00:41:35 -07:00
Urvang Joshi
352d0dee99 GetFeatures: Detect invalid VP8X/VP8/VP8L data 
This facilitates early error detection during decode/render.
Also, related refactoring.

Change-Id: Ia6c7cd91dec202a2a68dae2118f5981cf1eaa83d
 2013-05-10 14:27:11 -07:00
Urvang Joshi
3ef79fefec Cosmetic: "width * height" 
Change-Id: I567c0d95355160a9f6721f949b38e2b8b6270b7a
 2013-05-10 13:39:58 -07:00
Urvang Joshi
043e1ae4bd gif2webp: Fix signed/unsigned comparison mismatch 
Change-Id: I355f0614424276550db71b24e5bb1948e5c6894c
 2013-05-10 13:37:20 -07:00
Urvang Joshi
5818cff770 mux.h: A comment fix + some consistency fixes 
Change-Id: I0aee1090322bac3ae3dabf9a48661cbb6de3ca52
 2013-05-10 13:35:16 -07:00
pascal massimino
1153f888c9 Merge "swig: ifdef some Java specific code" 2013-05-10 02:00:02 -07:00
James Zern
3eeedae1bc Makefile.vc: fix libwebpdemux dll variable typo 
Fixes issue #149

Patch by: Jason Stevens  (cypher497 at gmail dot com)

Change-Id: I65cceaad37d22b96e5e92cb78f859fc0b7c38b67
 2013-05-09 23:49:39 -07:00
James Zern
f980faf417 swig: add python (decode) support 
similar to Java, simple interface only

Change-Id: I8a3d344e5d89f73627e4e0cb2067512260d46fdd
 2013-05-09 23:29:35 -07:00
James Zern
7f5f42bb36 swig: cosmetics 
normalize formatting
- update decode prototypes
- match project function name style

Change-Id: Ib481b5602171b72dbb1a5d462e6d5166e9b8566e
 2013-05-08 18:00:30 -07:00
Vikas Arora
8eae188a62 WebP-Lossless encoding improvements. 
Lossy (with Alpha) image compression gets 2.3X speedup.
Compressing lossless images is 20%-40% faster now.

Change-Id: I41f0225838b48ae5c60b1effd1b0de72fecb3ae6
 2013-05-08 17:22:11 -07:00
James Zern
c7247c4c68 swig: ifdef some Java specific code 
no implementation change

Change-Id: I077c707e1f6293188e6fa11ba24757009a709f77
 2013-05-08 17:13:40 -07:00
pascal massimino
4cb234d5b5 Merge "Mux: make ValidateForSingleImage() method static" 2013-05-08 01:54:28 -07:00
pascal massimino
ed6f53086b Merge "Add GetCanvasSize() method to mux" 2013-05-08 01:53:22 -07:00
Urvang Joshi
1d530c9a7e Mux: make ValidateForSingleImage() method static 
Change-Id: I96ac5e3be26b8e8ecd9f055501a5feb7710bc324
 2013-05-07 12:57:51 -07:00
James Zern
bba4c2b2a6 configure: add warning related flags 
adds TEST_AND_ADD_CFLAGS function
uses AM_CFLAGS to allow CFLAGS override

Change-Id: I9352aec6e5d905a41d832bf5ad0c8dcd154f7e97
 2013-05-07 12:48:12 -07:00
Urvang Joshi
fffefd18c3 Add GetCanvasSize() method to mux 
Change-Id: If910f5024f4c301a92e6c2e8ee9c315a103c5df7
 2013-05-07 12:47:48 -07:00
pascal massimino
732da8d0f0 Merge "configure: add GLUT detection; build vwebp" 2013-05-07 12:15:50 -07:00
James Zern
0e513f7ae3 configure: add GLUT detection; build vwebp 
Change-Id: I7f0964db2d04c22ff9ec274e8cd1cbed7379a165
 2013-05-07 11:42:15 -07:00
pascal massimino
55d1c150ea Merge "Alpha decoding: significantly reduce memory usage" 2013-05-07 09:14:56 -07:00
pascal massimino
13d99fb58b Merge "configure: add --enable-everything" 2013-05-07 08:50:57 -07:00
pascal massimino
2bf698fe49 Merge "configure.ac: add some helper macros" 2013-05-07 08:49:21 -07:00
Urvang Joshi
edccd19436 Alpha decoding: significantly reduce memory usage 
Simply get rid of an intermediate buffer of size width x height, by
using the fact that stride == width in this case.

Change-Id: I92376a2561a3beb6e723e8bcf7340c7f348e02c2
 2013-05-02 18:24:46 -07:00
James Zern
3cafcc9a8d configure: add --enable-everything 
Change-Id: Ie1b3abd42459de7f789fe985759c465c2a196727
 2013-05-01 18:25:00 -07:00
James Zern
4ef1447792 configure.ac: add some helper macros 
library check related variable maintenance -> *_INCLUDES / *_LIBS

CLEAR_LIBVARS / LIBCHECK_PROLOGUE / LIBCHECK_EPILOGUE

Change-Id: I72e292dc1f69b02f69a26639308f247db0471e2b
 2013-05-01 18:24:49 -07:00
Pascal Massimino
a4e1cdbbe8 Remove the gcc compilation comments 
They went out of sync some time ago, and are
no longer really required since we have them
buildable from makefile.unix

Change-Id: Ica2dcf5c55f44365598f832f55204d123d7aa601
 2013-05-01 15:01:37 -07:00
Urvang Joshi
6393fe4b7c Cosmetic fixes 
Change-Id: I7d5a337077ba1d0406769190fef9b47146ed8b24
 2013-04-26 15:55:42 -07:00
skal
9c4ce971a8 Simplify forward-WHT + SSE2 version 
no precision loss observed
speed is not really faster (0.5% at max), as forward-WHT isn't called often.

also: replaced a "int << 3" (undefined by C-spec) by a "int * 8"
( supersedes https://gerrit.chromium.org/gerrit/#/c/48739/ )

Change-Id: I2d980ec2f20f4ff6be5636105ff4f1c70ffde401
 2013-04-26 08:57:18 +02:00
skal
878b9da5bf fix missed optim 
it's not often the case, but could happen, that chroma has non-zero
coeff but luma hasn't. In such case, we should skip luma right away

Change-Id: I9515573ffaec8aad8b069d2c02ffbda4a6eff97c
 2013-04-25 22:46:12 +02:00
Urvang Joshi
00046171a5 VP8GetInfo(): Check for zero width or height. 
Change-Id: I0bf40621ed0776e1a185ad8abab5a914a3d29d69
 2013-04-25 12:08:40 -07:00
James Zern
9bf312938f align VP8Encoder::nz_ allocation 
prevents unaligned uint32_t load/store

Change-Id: I3f5e1b434a7452f618009d5e4bbe4f3260e3e321
 2013-04-25 02:55:39 -07:00