The code in the bundled libgd uses libvpx and writes the riff manually. The
code generates the correct even size, but neglects the padding. It's possible
older versions of libwebp would decode this, but libwebp 0.4.0 does not.
Let's apply the patch supplied by one of the WebP developers.
When there is already an APP13 marker segment in the file, iptcembed() doesn't
skip the first byte (0xFF) of this segment, what leads to unnecessary and
potentially invalid duplication of this byte. This patch fixes this issue.
As of PHP 5.3.0 the php_pspell.dll is not delivered anymore with the Windows
binaries, and according to bug #47464 that's highly unlike to change. So it's
appropriate to remove the respective extension entry from php.ini.
Contrary to the external libgd, the bundled libgd doesn't use optimized
rotation algorithms for negative square angles. We fix that now.
There are other improvements in gdImageRotateInterpolated() in the external
libgd. I'll leave them out for now, in the hope that we'll be able to rejoin
the two libraries rather soon.
imagescale(..., IMG_BICUBIC) is not supposed to work with palette images, so we
fix that by converting to true color if necessary. Basically the same fix has
already been applied to the external libgd[1].
[1] <723ea520be>
To avoid drawing the corner pixels twice, gdImageRectangle() draws the vertical
lines 2 points shorter than the actual side of the rectangle. However, this
causes "whiskers" for rectangles with height 0. This patch fixes this issue and
at the same time optimizes the algorithm by drawing only a single line for zero
height and zero width rectangles.
Actually, this is not really a bug fix, but rather a simplification and
optimization in the same vein as has been done with the external libgd, but
going a small step further and joining both for loops.
The file parameter of the XBM image ZPP is not properly taken into account. If
it is NULL that would result in a segfault, because gdImageXbmCtx() is not
prepared to take a NULL file_name. If it is not NULL the XBM data would be
written to STDOUT, because the stream is not initialized. This patch fixes both
issues.
