the sizes are already validated by CheckSizeForOverflow(), add casts to
size_t to avoid -Wshorten-64-to-32
Change-Id: Ida9102c2104f4a334a0ad16d6e01a12bedfd4eec
(cherry picked from commit 1e2e25b0d4349e2bd6ef95d791fbf651b5e52cc0)
this corrects the checkboard pattern displayed with transparent images
Change-Id: I5f46dbc9fa3893d61f5f1d4fda643ac030238f94
(cherry picked from commit 67c25ad5b420af07ea4cc5b4957b49ed1b9894bc)
In GenerateCandidates(), when candidate_ll->evaluate_ and
candidate_lossy->evaluate_ are both true, if lossless encoding
exits on error, candidate_ll->evaluate_ would not be correctly
reset. This will cause freeing uninitialized memory pointer in
SetFrame().
BUG=webp:322
Change-Id: I481b49a186e4fa3607ce71b4543a481083edf444
(cherry picked from commit 3ebe1c0003287e1d9b65d99750f227ca7ed4dffc)
This improves compression by ~5% at default quality.
If only 'allow_mixed' is on (but 'minimize_size' isn't), we continue to
use a heuristic to try one of the two or both.
Change-Id: Ia573a73ea26ad25f9debff759eed69d2b0449e82
(cherry picked from commit 3f4042b52a5d1a1c6ea41c192970d8b7e1a53118)
WebPDecoder.framework replaces WebP.framework as the decode-only
framework.
WebP.framework now includes the full library allowing for use of the
encoder.
BUG=webp:307
Change-Id: Ic8139f201576bf94b0d4a31cb7cad0655cd8ba97
(cherry picked from commit 1d5046d1f9a863d8a13460e5405fef8c0acd3db0)
Set enc->prev_candidate_undecided_ as 0 when a frame is not chosen
as a possible keyframe, so that the dispose method can be
dispose-to-background.
Change-Id: If2899f5dbc06fb53705fb8240072ab6440a6de12
(cherry picked from commit 29fedbf58b9c0d7641e9e42505199ed5ad295325)
When try_both_modes=0 (that is: -m 0 or -m 1), and the mode is i4,
we were still sometimes falling back to (unexplored, uninitialized) i16 mode,
which resulted in a enc/dec mismatch.
This was mainly occurring for large images (when bit_limit is low enough)
We disable the fall-back by disabling bit_limit using a large MAX_COST threshold.
Change-Id: I0c60257595812bd813b239ff4c86703ddf63cbf8
(cherry picked from commit 0a3838ca77c515ace2c49738f6976dc8aa3e136c)
the min-distortion was quite too low. And we were also
considering the fully skipped macroblocks (nz=0) in the stats.
We need to have at least *some* non-zero dc coeffs (nz=0x100XXXX).
Fix also two typos in StoreMaxDelta: the v0/v1 comparison was wrong,
and the DCs[] coeffs are actually already in ZigZag order.
Change-Id: I602aaa74b36f7ce80017e506212c7d6fd9deba1f
(cherry picked from commit e4cd4daf746a03aec9fd709ece756e6d39740aff)
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
(cherry picked from commit 1c36440094c7a34ae315035e16b8ed2275247556)
Change it from transparent white to transparent black, which matches
the transparent color assumed in Webp dispose-to-background method.
Also pre-multiply background colors before comparison in anim_diff,
just as what is done with regular pixel values.
Change-Id: I5a790522df21619c666ce499f73e42294ed276f2
(cherry picked from commit 43bd89587987cdb37611f065210d5a260c9462fb)
WEBP_HAVE_FLAG_LOCAL -> WEBP_HAVE_FLAG_${WEBP_SIMD_FLAG} this will
include the flag being tested in the output:
-- Performing Test WEBP_HAVE_FLAG_NEON
Change-Id: I1c0a143a857b16e4eb1fcf8b23c176380a5fef29
(cherry picked from commit ee1057e3b133afe95d904e68166744dad2a0a3d0)
This will well isolate contributions for original code,
generated code and SIMD (especially for Android).
Change-Id: Ie47664decc7f43c2f57260a72cab951c347281a7
(cherry picked from commit 6c628410763c8fce6a22768f9186327eb0d91a16)
brings the final libwebp.so size down 16/20K with arm64/armv7 builds
using ndk-r13
Change-Id: I20d8aba61d6b692b0fc32f4b271e2f9872f03c28
(cherry picked from commit de568abfdbc15a2953efc764cb0dab51b6466a52)
quiets a -Wimplicit-function-declaration with some configurations of gcc
(-std=c99).
_POSIX_C_SOURCE is preferred over _BSD_SOURCE with newer versions of
glibc
Change-Id: I378bffb13ba52ff5c4bad1433090dcc387e5d507
(cherry picked from commit bfab894739cd73af8629131a7fd7b79a98e74455)
The image is scaled to fit the whole viewport.
Avoid some oddities with offsets, etc.
removes some TODO.
Change-Id: I52fae9ca80a2feed234f32261c7f6358d7594e21
(cherry picked from commit 9310d192581872c97bb9e29099ac4d9257d30929)
restrict to 2^34 for 64-bit targets, < 2^32 for 32-bit
Change-Id: Iff4ce40ae2c3c7fc119f018c2128dbe8f744341f
(cherry picked from commit b8384b53d63fd193917076a727a262fc005263f8)
max_i4_header_bits_ could drop to zero for difficult image and trigger
a loop. Surprisingly, StatLoop() didn't have this bug.
Change-Id: Idc0f9eadef30a2b2f02041b994f25def30901e36
(cherry picked from commit 21e7537abeb01ad8d5d05c7d27b3f3b22dc85a62)
Pick the mode with the smallest alpha.
It only affects m0, in which case the mode decision is not re-examined
later in VP8Decimate(). Tests on some natural content png images show
PSNR increase as well as visual quality improvement.
Change-Id: Iea997e718cd7477160fa05eb7cfb35f4cec2fa9a
(cherry picked from commit 1377ac2ec1cb81e4a74fa6294ff30a9e4cc584aa)
otherwise, transparent areas were accumulating.
Change-Id: I066a96a2bcf0cac750b3df0c02229542b1ed3473
(cherry picked from commit c0a27fd2af75dc0c6df7e0847a45fa152b45d0ab)
This avoids potential encoder and decoder mismatch.
Change-Id: I5282d3e168afc6193033ad3fce8fbc35618ab2f5
(cherry picked from commit 386e4ba2f0c5e95bf2ad6042cae46a9ba07a5141)
use a compile check on a separate file to avoid assuming using
arm_neon.h is safe to use without flags when just the file itself is
self-contained with GCC target pragmas.
BUG=webp:313
Change-Id: I48f92ae3e6e4a9468ea5b937c80a89ee40b2dcfd
(cherry picked from commit 0104d730bf2485b58a6b9e9b5de0c0dbe170ebf5)
avoids int rollover when working with large input
BUG=webp:312
Change-Id: I6ad9f93b6c4b665c559bff87716a7b847f66a20d
(cherry picked from commit 342e15f0ce1336c94c84afec48d14bbc606779a0)
avoids int rollover when working with large input
BUG=webp:312
Change-Id: I2881bec2884b550c966108beeff1bf0d8ef9f76b
(cherry picked from commit 1147ab4ee7ff33c418279944aa17b5a43c6ec706)
avoids int rollover when working with large input
BUG=webp:312
Change-Id: I693cbb295df9cf94aa89294b19c0496bdbe84d18
(cherry picked from commit de9fa5074ebc51ca59c435da3a05cd108d06a7bf)
avoids int rollover when working with large input
BUG=webp:312
Change-Id: I3d7b689be8d5751248a82d1021243d80d3f67203
(cherry picked from commit deb1b83199276a6e8dea62d06c026c10474c8712)
and use it to validate decoder allocations. fixes a crash in jpegdec at
least.
BUG=webp:312
Change-Id: Ia940590098f29510add6aad10a8dfe9e9ea46bf4
(cherry picked from commit bc86b7a8a15a16438b9244cc26cc47682b9fcbb0)
