Commit Graph

1701 Commits

Author SHA1 Message Date
skal
3307c16327 Don't set alpha-channel to 0xff for alpha->green uplift
usually saves ~4 bytes on average (but, up to 10 -or even 16- sometimes).

Change-Id: Ib500e1a35471a2f3da453ffc8c7e95d28b8d34fe
2013-06-18 00:03:32 +02:00
pascal massimino
5130770cd3 Merge "wicdec: silence a format warning" 2013-06-17 14:45:01 -07:00
Urvang Joshi
a37eff47d6 Regression fix for alpha channels using color cache:
Considering the fact that insert to/lookup from the color cache is always 32
bit, use DecodeImageData() variant in that case.

Change-Id: I6c665a6cfbd9bd10651c1e82fa54e687cbd54a2b
2013-06-17 03:49:30 -07:00
pascal massimino
241cf99bc0 Merge "muxedit: silence some uninitialized warnings" 2013-06-16 23:23:20 -07:00
Urvang Joshi
c8f9c84d5e Regression fix for alpha unfiltering:
For vertical filter, correctly initialize 'preds' when not starting at
row 0.

Change-Id: I69697d73dde8a2f701f376ff3986d09fa6f7fee3
2013-06-16 02:00:44 -07:00
James Zern
14cd5c6c40 muxedit: silence some uninitialized warnings
src/mux/muxedit.c:490: warning: 'x_offset' may be used uninitialized in this function
src/mux/muxedit.c:490: warning: 'y_offset' may be used uninitialized in this function

Change-Id: I4fd27f717e59a556354d0560b633d0edafe7a4d8
2013-06-15 14:30:22 -07:00
James Zern
a368db81c6 dec/vp8l: quiet vs9 x64 type conversion warning
src\dec\vp8l.c(816) : warning C4244: '=' : conversion from '__int64' to
'int', possible loss of data
src\dec\vp8l.c(817) : warning C4244: '=' : conversion from '__int64' to
'int', possible loss of data

Change-Id: I1d376d5dea909395bff8741aba16e8eed83a6e8f
2013-06-14 19:24:54 -07:00
James Zern
ffae9f31e8 wicdec: silence a format warning
from x86_64-w64-mingw32-gcc

examples/wicdec.c: In function ‘ExtractICCP’:
examples/wicdec.c:131:21: warning: format ‘%u’ expects argument of type
‘unsigned int’, but argument 4 has type ‘size_t’ [-Wformat]

Change-Id: I6642dae62265a2276ae9ac96dd8ce6f1e2d37ca5
2013-06-14 18:44:59 -07:00
Urvang Joshi
8cf0701eb0 Alpha encoding: never filter in case of NO_COMPRESSION
This is because, filtering would never affect compression density for
this case.

Change-Id: I4bb14d3eb7da0a3805fda140eb1dfbf9ccc134f5
2013-06-14 13:34:25 -07:00
James Zern
825e73b1a6 update ChangeLog
Change-Id: I2e67e5d80cb8f8e4453cee45144bcc01e9a3efeb
2013-06-12 23:32:59 -07:00
James Zern
abf6f6915f update NEWS
Change-Id: Ie831ecc6995679acaf238686e2f287bfaa0221a7
2013-06-12 23:25:09 -07:00
James Zern
5a92c1a5e9 bump version to 0.3.1
libwebp{,decoder} - 0.3.1
libwebp libtool - 4.3.0 (compatible release)
libwebpdecoder libtool - 0.1.0 (compatible release)

mux/demux - 0.1.1
libtool - 0.1.0 (compatible release)

Change-Id: Icc8329a6bcd9eea5a715ea83f1535a66d6ba4b58
2013-06-12 23:19:13 -07:00
skal
86daf77c47 store top Y/U/V samples in packed fashion
More cache-line friendly than storing them split.

Change-Id: Ifb23cc3518ff1b5c37afe007558d4278868d75ea
2013-06-13 06:01:27 +02:00
James Zern
67bc353e6d Revert "add WebPBlendAlpha() function to blend colors against background"
This reverts commit dcbb1ca54a.

Dropping this for now to maintain compatibility for 0.3.1.

Change-Id: I44e032a072d317bb67e1439c42cff923e603038f
2013-06-12 15:02:09 -07:00
Urvang Joshi
068db59e26 Intertwined decoding of alpha and RGB
This will reduce the time to first decoded pixel.

Change-Id: I07b900c0ed4af3aac806b2731e11cd18ec16d016
2013-06-12 14:10:59 -07:00
skal
38cc011408 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
(cherry picked from commit 9c4ce971a8)
2013-06-12 13:48:11 -07:00
Urvang Joshi
3fa595a571 Support decoding upto given row in DECODE_DATA_FUNC
This is in preparation for supporting Intertwined decoding of RGB and
alpha.

Change-Id: Ie1905d1212f4a00718a64dca020be3f4b1b870ec
2013-06-11 16:00:58 -07:00
Urvang Joshi
520f005f85 DequantizeLevels(): Add 'row' and 'num_rows' args
Change-Id: I0032e25c30f34362105d942f2dbb9ac75200f911
2013-06-11 15:59:21 -07:00
Urvang Joshi
47374b8273 Alpha unfilter for given set of rows
Support reconstruction of small number of rows at a time.

Change-Id: Ief1bc78c7ad011ec6df856551f3beb5f907fd8e0
2013-06-11 15:57:42 -07:00
Pascal Massimino
f32097e0df probe input file and quick-check for WebP format.
Error message is clearer that 'can't create demux object'.

Change-Id: Iec008601892f7cd8399e1948751747ac23305eef
(cherry picked from commit 830f72b7e9)
2013-06-11 15:03:23 -07:00
James Zern
a2aed1d08c configure: improve gl/glut library test
add a check for a libGL function (glOrtho) in addition to glutMainLoop
when establishing the need for libGL at link time.

fixes vwebp link failure on ubuntu 13.04+

Change-Id: I537e9a5cab5cf4cd8875e06268d2107f377e625e
(cherry picked from commit 2ccf58d648)
2013-06-11 15:03:23 -07:00
James Zern
c7e89cbb02 update copyright text
rather than symlink the webm/vpx terms, use the same header as libvpx to
reference in-tree files

based on the discussion in:
https://codereview.chromium.org/12771026/

Change-Id: Ia3067ecddefaa7ee01550136e00f7b3f086d4af4
(cherry picked from commit d640614d54)
2013-06-11 15:03:22 -07:00
James Zern
a00380d2ed configure: remove use of AS_VAR_APPEND
This wasn't used often and benefits were likely minimal. Dropping it
outright is a bit simpler than adding a compatibility ifdef.

provides some compatibility with older versions of autoconf.
tested with autoconf 2.59/automake 1.7/aclocal 1.7

Change-Id: Ifed892346cf2329597985704830a96fc58d65607
(cherry picked from commit 9326a56f8d)
2013-06-11 15:03:22 -07:00
skal
a94a88dd62 fix EXIF parsing in PNG
'exiftool' puts an 'APP1' chunk for exif, e.g.:
https://metacpan.org/source/EXIFTOOL/Image-ExifTool-5.87/lib/Image/ExifTool/PNG.pm#L305

Change-Id: I313d3e6945898526b8a4baf3d9016a2591a1a817
(cherry picked from commit bec11092ca)
2013-06-11 15:03:22 -07:00
skal
a71e5d84e9 add doc precision for WebPPictureCopy() and WebPPictureView()
output picture object is overwritten, not free'd or destroyed.

Change-Id: Ibb47ab444063e7ad90ff3d296260807ffe7ddbf9
(cherry picked from commit 23d28e216d)
2013-06-11 15:03:21 -07:00
skal
8287012ec7 remove datatype qualifier for vmnv
this fix is for clang (LLVM v4.2). gcc was fine.

Change-Id: Id4076cda84813f6f9548a01775b094cff22b4be9
(cherry picked from commit 3fe91635df)
2013-06-11 15:03:21 -07:00
skal
e190843029 fix a memory leak in gif2webp
(rgba->yuv allocates memory)
Also fixed few warning and cleaned the code up.

Change-Id: Id904ad3ad8802ea9fc3d34247d27193dfa7b0b99
(cherry picked from commit 764fdffaac)
2013-06-11 15:03:21 -07:00
skal
0b18b9eef6 fix two minor memory leaks in webpmux
(only occur in case of error)

Change-Id: Icab69bb364b77f8eae6cae91047354c27e610602
(cherry picked from commit 3e59a74d72)
2013-06-11 15:03:21 -07:00
James Zern
db5095d5b6 remove some cruft from swig/libwebp.jar
picked up a few unnecessary classes from a dirty tree in the last commit

Change-Id: I98be16a0bc8716476ce440da542d113f254aee78
(cherry picked from commit 325d15ff30)
2013-06-11 15:03:21 -07:00
James Zern
850e956f9b README: update swig notes
add python, required version notes

Change-Id: Iec2e94075f6cf54455ce5a658f9b7258109f4d01
(cherry picked from commit 4a7627c215)
2013-06-11 15:03:21 -07:00
James Zern
bddd9b0a93 swig/python: add minimal documentation
uses autodoc to display the function arguments rather than the
inscrutable va_args (*args).

Change-Id: Iec2ff8276c1533b14c3032836d822fbdae632521
(cherry picked from commit 825b64db53)
2013-06-11 15:00:48 -07:00
James Zern
d573a8d53f swig: add python encode support
wraps the simple interface similar to java.

Change-Id: Ib922bbcae322b2345b6dce5dee08faad705a77fd
(cherry picked from commit 14677e11d4)
2013-06-11 15:00:47 -07:00
James Zern
6b931875ac swig/java: reduce wrapper function code duplication
define a macro to emit the wrapper code

Change-Id: I672416016162d6d9ce6f455d224044e0837e3ace
(cherry picked from commit a5c297c842)
2013-06-11 15:00:47 -07:00
James Zern
6fe536f4ba swig/java: rework uint8_t typemap
reuse the declarations from arrays_java.i for signed char to make an
explicit uint8_t mapping. this avoids sign conversion build warnings.

Change-Id: Icfb5b865cf1fd404e89f2cd889111f0a94e3c604
(cherry picked from commit ad4a367dba)
2013-06-11 15:00:47 -07:00
skal
a2ea46439e 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
(cherry picked from commit afa3450c11)
2013-06-11 15:00:47 -07:00
James Zern
7bb28d2a55 webp/lossless: fix big endian BGRA output
Change-Id: I3d4b3d21f561cb526dbe7697a31ea847d3e8b2c1
(cherry picked from commit 2ca83968ae)
2013-06-11 15:00:47 -07:00
Vikas Arora
f036d4bfa6 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
(cherry picked from commit 742110ccce)
2013-06-11 15:00:46 -07:00
skal
8112c8cf54 remove some warnings:
* "declaration of ‘index’ shadows a global declaration [-Wshadow]"
* "signed and unsigned type in conditional expression [-Wsign-compare]"

Change-Id: I891182d919b18b6c84048486e0385027bd93b57d
(cherry picked from commit 87a4fca25f)
2013-06-11 15:00:46 -07:00
Urvang Joshi
cc128e0bfc 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
(cherry picked from commit 64c844863a)
2013-06-11 15:00:46 -07:00
Pascal Massimino
07db70d20f fix for big-endian
(Issue #150: https://code.google.com/p/webp/issues/detail?id=150)

Change-Id: Iad46d375a8c5eabae37cde8f55b3e7448601f264
(cherry picked from commit 4437061735)
2013-06-11 15:00:46 -07:00
Urvang Joshi
eda8a7dec5 gif2webp: Fix signed/unsigned comparison mismatch
Change-Id: I355f0614424276550db71b24e5bb1948e5c6894c
(cherry picked from commit 043e1ae4bd)
2013-06-11 15:00:46 -07:00
James Zern
31f346fe0c Makefile.vc: fix libwebpdemux dll variable typo
Fixes issue #149

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

Change-Id: I65cceaad37d22b96e5e92cb78f859fc0b7c38b67
(cherry picked from commit 3eeedae1bc)
2013-06-11 15:00:45 -07:00
James Zern
6c76d28e4b swig: add python (decode) support
similar to Java, simple interface only

Change-Id: I8a3d344e5d89f73627e4e0cb2067512260d46fdd
(cherry picked from commit f980faf417)
2013-06-11 15:00:45 -07:00
James Zern
b4f5bb6ca3 swig: cosmetics
normalize formatting
- update decode prototypes
- match project function name style

Change-Id: Ib481b5602171b72dbb1a5d462e6d5166e9b8566e
(cherry picked from commit 7f5f42bb36)
2013-06-11 15:00:45 -07:00
Vikas Arora
498d4dd634 WebP-Lossless encoding improvements.
Lossy (with Alpha) image compression gets 2.3X speedup.
Compressing lossless images is 20%-40% faster now.

Change-Id: I41f0225838b48ae5c60b1effd1b0de72fecb3ae6
(cherry picked from commit 8eae188a62)
2013-06-11 15:00:45 -07:00
James Zern
26e7244221 swig: ifdef some Java specific code
no implementation change

Change-Id: I077c707e1f6293188e6fa11ba24757009a709f77
(cherry picked from commit c7247c4c68)
2013-06-11 15:00:45 -07:00
James Zern
8ecec68652 configure: add warning related flags
adds TEST_AND_ADD_CFLAGS function
uses AM_CFLAGS to allow CFLAGS override

Change-Id: I9352aec6e5d905a41d832bf5ad0c8dcd154f7e97
(cherry picked from commit bba4c2b2a6)
2013-06-11 15:00:44 -07:00
James Zern
e676b04309 configure: add GLUT detection; build vwebp
Change-Id: I7f0964db2d04c22ff9ec274e8cd1cbed7379a165
(cherry picked from commit 0e513f7ae3)
2013-06-11 15:00:44 -07:00
Urvang Joshi
b0ffc43700 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
(cherry picked from commit edccd19436)
2013-06-11 15:00:44 -07:00
James Zern
20aa7a8dd5 configure: add --enable-everything
Change-Id: Ie1b3abd42459de7f789fe985759c465c2a196727
(cherry picked from commit 3cafcc9a8d)
2013-06-11 15:00:44 -07:00