Commit Graph

15 Commits

Author SHA1 Message Date
James Zern
c284780f0a imageio_util: add ImgIoUtilCheckSizeArgumentsOverflow
and use it to validate decoder allocations. fixes a crash in jpegdec at
least.

BUG=webp:312

Change-Id: Ia940590098f29510add6aad10a8dfe9e9ea46bf4
(cherry picked from commit bc86b7a8a1)
2016-11-02 23:36:28 -07:00
James Zern
79fcf29af8 wicdec: add support for reading from stdin
This adds stdin support to cwebp when built with WIC support

Change-Id: I3f8b0321322e6fb08af60ac5297cbd448e6547db
2015-12-08 19:04:22 -08:00
Pascal Massimino
7861578bd6 for ReadXXXX() image-readers, use the value of pic->use_argb
This is to infer the needed conversion to YUV(A) or RGB(A).

This is useful to avoid some conversion steps between ARGB and YUVA.
For instance, if the input file is a JPEG, we decode to RGB and
convert to YUV right away, without the intermediate step to ARGB.

The only caveat is that cropping/scaling might give slightly different result,
because of YUV420 downsampling. Therefore, we omit this feature
at cwebp level, when -crop or -rescale is used.

Change-Id: I5a3abe5108982f2a4570e841e3d9baffc73f5bee
2015-10-27 22:54:11 +01:00
James Zern
badfcbaa1e wicdec: fix alpha detection w/64bpp BGRA/RGBA
Change-Id: Ia712cf736e490d482a52b63d8e2816d0b7035cd0
2015-10-08 20:33:33 -07:00
James Zern
9b228b5416 wicdec: (msvs) quiet some /analyze warnings
add additional return checks and asserts to avoid:
C6102: Using 'XXX' from failed function call ...

Change-Id: I51f5fa630324e0cd7b2d9fceefecb4f4021474b1
2015-01-17 11:50:47 -08:00
James Zern
32b3137936 configure: move config.h to src/webp/config.h
this change has the side-effect of using directory names in the
include, silencing a lint warning.

Change-Id: Ib91cf63a90534e32fadfa5c2372bfdb29f854d02
2014-06-10 23:42:00 -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
James Zern
d640614d54 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
2013-06-06 23:09:14 -07:00
Pascal Massimino
e7d9548c9b add WebPBlendAlpha() function to blend colors against background
new option: -blend_alpha 0xrrggbb
also: don't force picture.use_argb value for lossless. Instead,
delay the YUVA<->ARGB conversion till WebPEncode() is called.
This make the blending more accurate when source is ARGB
and lossy compression is used (YUVA).
This has an effect on cropping/rescaling. E.g. for PNG, these
are now done in ARGB colorspace instead of YUV when lossy compression
is used.

Change-Id: I18571f1b1179881737a8dbd23ad0aa8cddae3c6b
2013-04-02 19:14:30 -07:00
James Zern
3151669b15 wicdec + dwebp cosmetics: normalize formatting
- drop mixed use of Hungarian notation
- fix some line continuations

Change-Id: I9e6ec5cd6c746eb78048cf3532586fd93cef4ddb
2013-02-15 20:39:45 -08:00
James Zern
c9f1649012 wicdec: add alpha support for paletted formats
Fixes issue #141.

Change-Id: I5d8163329a9e363da9db9d70d25edeb29da32e9e
2013-02-06 23:29:32 -08:00
James Zern
e7ea61eb75 wicdec: silence some warnings
-Wformat, -Wmissing-field-initializers and size type related

Change-Id: I92b1c7cc485bf59f94b5c0f8bb2137d87604f831
2013-02-06 23:16:50 -08:00
James Zern
7c732e59f4 cwebp: centralize WebPCleanupTransparentArea()
this can be safely called whether the picture has alpha or not

Change-Id: I0047fd4c110f1072f183f3d340682502bd6623d7
2013-02-04 15:44:26 -08:00
James Zern
e83ff7decd wicdec: add ICC profile extraction
Change-Id: I4522cdd5a529f802f1eb566b6d94539612e0976b
2013-02-02 10:40:49 -08:00
James Zern
a452a5554a cwebp: extract WIC decoding to its own module
Change-Id: I8e3e20787f6c3cc0616bd33beb2a6ccdda1e04f7
2013-01-22 18:31:28 -08:00