Apply gamma correction to the decoded RGB values.
This handles corner cases where the PNG file doesn't have
a standard 1/2.2 gamma value.
BUG=webp:369
Change-Id: I9907b6e2c458002de7c26d0b9e416278cca33990
if a single text file name is supplied as argument
(e.g.: 'webpmux my_long_list_of_frames.txt'), the command
line arguments are actually parsed from this file.
Tokenizer will remove space, tabs, LF, CR, returns, etc.
+ changed ImgIoUtilReadFile() to return a null-terminated
data, for convenience.
+ misc clean-up in the code
BUG=webp:355
Change-Id: I76796305641d660933de5881763d723006712fa9
---
...prior to allocating a Picture. this is consistent with the other
readers and allows the allocation size to be limited at compile time
BUG=webp:355
Change-Id: Ib8e027ef863489b1e0f9e2a1403c3836da3ef48d
WEBP_MAX_IMAGE_SIZE can be defined to control this limit.
Set it to 1.5GiB w/--config=asan-fuzzer to avoid OOM with large resolution
images. This limit leaves some headroom over the single image max of 2^14 *
2^14 * 4
BUG=webp:355
Change-Id: I4d48eb0a063638297a842582e0229dfd5a54df5f
everything post jpeg decoder creation should go through the error path
to ensure it's cleaned up properly
Change-Id: If78b4529e40797c67c3d0e624af1c036badea674
this avoids setting bytes_per_px < depth causing an undersized
allocation for rgb import resulting in a crash.
BUG=b/37930872
Change-Id: I32a86f91528acc084a53d08c9fde9f2f1270a603
the TIFFGetField() return for TIFFTAG_EXTRASAMPLES is defined as (count,
types array) [1]. previously the count was being checked rather than the
first element of the array to determine whether the alpha was associated
(pre-multiplied) and the result needed to be unmultiplied.
since:
9273e441 fix TIFF encoder regarding rgbA/RGBA
[1] http://www.libtiff.org/man/TIFFSetField.3t.html
Change-Id: I6e41be9d038fe8afb6d0aa3c8048925dc901113b
Encoder:
We were always using ExtraSamples=1, which means associated-alpha.
But we don't need the (lossy) excursion to rgbA format. We can save
the samples as RGBA directly, by changing ExtraSamples to '2'.
The TIFF encoder now checks the colorspace properly, to handle
premultiplied format as well as non-premultiplied.
Decoder:
The result of TIFFReadRGBAImageOriented() is always pre-multiply.
So, in case an alpha channel is present, we need to unmultiply it before
calling WebPPictureImportRGBA().
See:
https://www.itu.int/itudoc/itu-t/com16/tiff-fx/docs/tiff6.pdf (page 31)
and also http://www.asmail.be/msg0055469184.html
Change-Id: I3258bfdb0eb2e1a53d6c04414f55edb2926c938c
- 12/13/2016: version 0.5.2
This is a binary compatible release.
This release covers CVE-2016-8888 and CVE-2016-9085.
* further security related hardening in the tools; fixes to
gif2webp/AnimEncoder (issues #310, #314, #316, #322), cwebp/libwebp (issue
#312)
* full libwebp (encoder & decoder) iOS framework; libwebpdecoder
WebP.framework renamed to WebPDecoder.framework (issue #307)
* CMake support for Android Studio (2.2)
* miscellaneous build related fixes (issue #306, #313)
* miscellaneous documentation improvements (issue #225)
* minor lossy encoder fixes and improvements
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Merge tag 'v0.5.2'
libwebp-0.5.2
- 12/13/2016: version 0.5.2
This is a binary compatible release.
This release covers CVE-2016-8888 and CVE-2016-9085.
* further security related hardening in the tools; fixes to
gif2webp/AnimEncoder (issues #310, #314, #316, #322), cwebp/libwebp (issue
#312)
* full libwebp (encoder & decoder) iOS framework; libwebpdecoder
WebP.framework renamed to WebPDecoder.framework (issue #307)
* CMake support for Android Studio (2.2)
* miscellaneous build related fixes (issue #306, #313)
* miscellaneous documentation improvements (issue #225)
* minor lossy encoder fixes and improvements
* tag 'v0.5.2': (54 commits)
update ChangeLog
anim_util: quiet implicit conv warnings in 32-bit
jpegdec: correct ContextFill signature
Remove some errors when compiling the code as C++.
vwebp: clear canvas during resize w/o animation
tiffdec: restore libtiff 3.9.x compatibility
update NEWS
AnimEncoder: avoid freeing uninitialized memory pointer.
WebPAnimEncoder: If 'minimize_size' and 'allow_mixed' on, try lossy + lossless.
fix a potential overflow with MALLOC_LIMIT
bump version to 0.5.2
update AUTHORS & .mailmap
iosbuild.sh: add WebPDecoder.framework + encoder
AnimEncoder: Correctly skip a frame when sub-rectangle is empty.
Fix assertions in WebPRescalerExportRow()
fix a typo in WebPPictureYUVAToARGB's doc
systematically call WebPDemuxReleaseIterator() on dec->prev_iter_
doc: use two's complement explicitly for uint8->int8 conversion
Anim_encoder: correctly handle enc->prev_candidate_undecided_
WebPPictureDistortion(): free() -> WebPSafeFree()
...
Change-Id: I16bcf54af41ce8fad98d4fbc8aa1df58f338fc23
Passing the 'verbose' flag to DecodeWebP() wasn't mandated,
and was creating a forced dependency between imageio/ and examples/
Change-Id: Ib3d3f381a7b699df369a97cfb44360580422df11
Also introduce an always-failing 'reader' for unknown formats.
So we don't have to check reader==NULL, code is more regular.
-> We can get read of specific ReadPNG(), ReadJPEG(), ... declaration and use.
Change-Id: I290759705420878f00c7223c726d4ad404afd9c4
decoding and file i/o have been split to imageio, all that remains is
some string routines used for parameter parsing in the examples
Change-Id: I77386cd8aa39124b9e14c95fdbaa17ea4ab5bb24
