Commit Graph

20 Commits

Author SHA1 Message Date
James Zern
d29e00aa70 anim_decode: fix overflow in ZeroFillFrameRect
This function was missed in 1c364400 (prevent 32b overflow for very
large canvas_width / height) when related functions were updated.

Bug: 481737032
Change-Id: If55cc0490e5ed4f3fc3da07d9b4a5cd921a107ee
2026-02-05 13:07:59 -08:00
mxms
ed05414168 Prepare decoder and demuxer for -fbounds-safety adoption
Change memcpy|memset|memchr to unsafe variants

Add WEBP_ASSUME_UNSAFE_INDEXABLE_ABI to relevant files. I've also added
it to lossless.h, yuv.h, and decode.h as they're all imported by code in
dec, which will have -fbounds-safety annotations.

Bug: 432511225
Change-Id: I3011a0a56633b8437ead31607c7ac5f6311fa846
2025-10-25 13:40:45 -07:00
clang-format
44257cb826 apply clang-format
(Debian clang-format version 19.1.7 (3+build4)) with `--style=Google`.

Manual changes:
* clang-format disabled around macros with stringification (mostly
  assembly)
* some inline assembly strings were adjusted to avoid awkward line
  breaks
* trailing commas, `//` or suffixes (`ull`) added to help array
  formatting
* thread_utils.c: parameter comments were changed to the more common
  /*...=*/ style to improve formatting

The automatically generated code under swig/ was skipped.

Bug: 433996651
Change-Id: Iea3f24160d78d2a2653971cdf13fa932e47ff1b3
2025-07-31 14:53:58 -07:00
Henner Zeller
98c2780100 IWYU: Include all headers for symbols used in files.
Semi-automatically taking the the misc-include-cleaner warnings
by clang-tidy and fixing files to be self-contained.

Change-Id: Iaaa2b2ec9d6dcce547fa5cb6b4f056dfc8c781ff
2025-05-15 14:53:57 +02:00
James Zern
3f54b1aa12 demux,cosmetics: rm struct member '_' suffix
This is a follow up to:
ee8e8c62 Fix member naming for VP8LHistogram

This better matches Google style and clears some clang-tidy warnings.

Change-Id: Ida41ca82445800552573ff5ebbde743cf8fa6eff
2025-04-15 19:27:17 -07:00
Vincent Rabaud
13d9c30b2b Add a WEBP_NODISCARD
Change-Id: Ice66f2aa6358474d728fb19c571edc86ed139a49
2023-11-10 13:57:07 +01:00
James Zern
e4886716d3 anim_decode: fix alpha blending with big-endian
images are decoded in RGBA/BGRA, but represented as uint32_t during the
blend process; this fixes the channel extraction

Bug: webp:548
Change-Id: Ie74aa43d8f87d3552d5afc0abba466335f5d1617
2021-12-22 17:03:58 -08:00
James Zern
28d488e6f1 utils.h: add SizeOverflow()
this normalizes the 'size != (size_t)size' checks in the libraries.

Change-Id: I1e8ccd0d3697266f23911ecf0f7a546f011befde
2021-06-14 12:22:28 -07:00
James Zern
9c367bc602 WebPAnimDecoderNewInternal: validate bitstream before alloc
this avoids large allocations with corrupt files due to the canvas size

BUG=oss-fuzz:28658

Change-Id: Idd1957e5447a2dadaef1fadaf68820fcb29f045a
2021-02-05 13:01:27 -08:00
Yannis Guyon
27d082403c Fix integer overflow in WebPAnimDecoderGetNext()
Change-Id: Ic53263b6125ca125d5fb3791474eab78043fec18
2020-02-27 20:23:37 +01:00
James Zern
a439972175 WIP: list includes as descendants of the project dir
#include "(.|..)/..." -> #include "src/..."

Change-Id: I772880aa097a770722043c8a4393552ba38a89b6
2017-10-10 23:04:05 -07:00
Pascal Massimino
aaf2a6a698 systematically call WebPDemuxReleaseIterator() on dec->prev_iter_
Change-Id: I4a767134dcc52a7ee7c3bc5deb91012eaf7b6512
2016-10-07 17:30:58 -07:00
Vincent Rabaud
28ce304344 Remove some errors when compiling the code as C++.
This fixes some cases from
https://bugs.chromium.org/p/webp/issues/detail?id=137

Change-Id: I58f3a617bf973dbe4c5794004a01e2aea39ba53a
2016-10-05 09:39:08 +02:00
Pascal Massimino
1c36440094 prevent 32b overflow for very large canvas_width / height
some multiplies here and there needed some extra checks
and error reporting. Even if width * height is guaranteed
to be < 2**32, we were multiplying by num_channels and
triggering a 32b overflow.
Some multiplies were not using size_t or uint64_t, additionally.

Change-Id: If2a35b94c8af204135f4b88a7fd63850aa381bbf
2016-09-23 05:19:32 +00:00
James Zern
e4a7eed49d cosmetics: fix indent
Change-Id: I8be5152115618016e1e2a59fbfec78d5282ce57e
2015-12-03 00:53:59 -08:00
James Zern
b7551e90e1 cosmetics: fix indent
Change-Id: I67e5a0308a964bc37b2314d96f3691fc0550e9bc
2015-12-03 00:34:15 -08:00
Urvang Joshi
688b265d5e AnimDecoder API: Add a GetDemuxer() method.
Change-Id: Ic6a86e8788f1a3e21d1287ece36d80d1153b8f5a
2015-11-11 10:36:17 -08:00
Urvang Joshi
1aa4e3d6ba WebPAnimDecoder: add an option to enable multi-threaded decoding.
Change-Id: I3ff12bc07fc5a1b57a6950afa0e5f54a12985e75
2015-11-11 10:34:42 -08:00
Urvang Joshi
3584abca16 AnimDecoder: option to decode to common color modes.
Change-Id: I77ddab9abe3c4b35a9bcfe4c90b3e43d3aef166d
2015-11-10 09:27:59 -08:00
Urvang Joshi
d39dc8f3cc Create a WebPAnimDecoder API.
This is designed for the simple use-case where one wants to decode all
frames one-by-one in order.

Also, use this API in anim_util library, which is in turn used by
anim_diff tool.

Change-Id: Ie8b653c04e867d40fd23321b3dd41b87689656c7
2015-09-02 16:23:10 -07:00