Lossless conversion for webp

Propagating lossless conversion from libgd to our bundled gd.
Changing "quantization" to "quality" as in libgd.
Adding test.

IMG_WEBP_LOSSLESS i

Lossless conversion for webp

Propagating lossless conversion from libgd to our bundled gd.
Changing "quantization" to "quality" as in libgd.
Adding test.

IMG_WEBP_LOSSLESS is only defined, if lossless WebP encoding is
supported by the libgd used.

Closes GH-7348.

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AVIF support for getimagesize() and imagecreatefromstring()

Thanks to Joe Drago for help with the AVIF detection code.

Co-authored-by: Nikita Popov <nikita.ppv@googlemail.com>
C

AVIF support for getimagesize() and imagecreatefromstring()

Thanks to Joe Drago for help with the AVIF detection code.

Co-authored-by: Nikita Popov <nikita.ppv@googlemail.com>
Co-authored-by: Christoph M. Becker <cmbecker69@gmx.de>

Closes GH-7091.

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Add avif support to ext/gd

This backports avif support from upstream libgd into bundled libgd
and exposes the functionality through new imagecreatefromavif()
and imageavif() function

Add avif support to ext/gd

This backports avif support from upstream libgd into bundled libgd
and exposes the functionality through new imagecreatefromavif()
and imageavif() functions.

Closes GH-7026.

Co-authored-by: Christoph M. Becker <cmbecker69@gmx.de>

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Mark various functions with void arguments.

This fixes a bunch of [-Wstrict-prototypes] warning,
because in C func() and func(void) have different semantics.

Improve some TypeError and ValueError messages

Closes GH-5377

Fix #78880: Final spelling fixes

Support TGA reading

We add PHP bindings for libgd's features to read TGA files, which are
available as of libgd 2.1.0.

As PHP's bundled libgd doesn't yet include the respective

Support TGA reading

We add PHP bindings for libgd's features to read TGA files, which are
available as of libgd 2.1.0.

As PHP's bundled libgd doesn't yet include the respective features of the
external libgd, we add these.

Since TGA has no easily recognizable file signature, we don't add TGA
support for imagecreatefromstring() or getimagesize() and friends.

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Implemented the gdScatter filter I wrote almost 10 years ago

This filter is available as of libgd 2.1.0 which is our bare minimum for
external compilation of ext/gd.

The scatter

Implemented the gdScatter filter I wrote almost 10 years ago

This filter is available as of libgd 2.1.0 which is our bare minimum for
external compilation of ext/gd.

The scatter filter works by iterating over all pixels in the image and
shifting them randomly based on two modifier (`plus` and `sub`) values:

dest_x = (int)(x + ((rand() % (plus - sub)) + sub));
dest_y = (int)(y + ((rand() % (plus - sub)) + sub));

Additionally the scatter filter also supports by only shifting pixels where
the current pixel being iterated is one or more colors, allowing the scatter
filter to only effect solid colors in part of an image.

Note, due to the nature of randomness and implementation, pixels who were
shifted ahead of iteration will be shifted once more and therefore the
bottom right of an image may contain a slight scatter effect due to this.

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Remove HAVE_SYS_VARARGS_H

Outdated systems used to provide the `<varargs.h>` and in case of PHP
`<sys/varargs.h>`. [1]

Current systems have `<stdarg.h>` which is also a C89 stan

Remove HAVE_SYS_VARARGS_H

Outdated systems used to provide the `<varargs.h>` and in case of PHP
`<sys/varargs.h>`. [1]

Current systems have `<stdarg.h>` which is also a C89 standard header
and systems have it always present. [2]

[1] https://en.wikipedia.org/wiki/Stdarg.h#varargs.h
[2] https://port70.net/~nsz/c/c89/c89-draft.html#4.1.2

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Remove unused function

Fix #74744: gd.h: stdarg.h include missing for va_list use in gdErrorMethod

Merge branch 'PHP-7.1'

* PHP-7.1:
Fix #73893: A hidden danger of death cycle in a function of gd

# Conflicts:
# ext/gd/libgd/gd_rotate.c

Fix #73893: A hidden danger of death cycle in a function of gd

We remove the unused, but potentially dangerous functions.

Implement #69606: Support BMPs (added in GD 2.1.0)

We add PHP bindings for libgd's features to read and write BMP files, which
are available as of libgd 2.1.0.

As PHP's bundled

Implement #69606: Support BMPs (added in GD 2.1.0)

We add PHP bindings for libgd's features to read and write BMP files, which
are available as of libgd 2.1.0.

As PHP's bundled libgd doesn't yet include the respective features of the
external libgd, we add these.

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Merge branch 'pull-request/2151'

Unify error handling of bundled and external libgd

There's no need anymore to call an own error handler directly. Instead we
register our error handler and call libgd's error functions (

Unify error handling of bundled and external libgd

There's no need anymore to call an own error handler directly. Instead we
register our error handler and call libgd's error functions (which will
forward). We do this regardless of compiling with the bundled or an external
libgd.

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Change gdImageTrueColorToPalette() to return success/failure

We're porting the relevant changes from
<https://github.com/libgd/libgd/commit/34a00a40>.

We also check the return v

Change gdImageTrueColorToPalette() to return success/failure

We're porting the relevant changes from
<https://github.com/libgd/libgd/commit/34a00a40>.

We also check the return value in the PHP binding, and throw E_WARNING if
the conversion failed.

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Implement request #33066: Add GD Image Function gdImageOpenPolygon()

gdImageOpenPolygon() has been introduced with líbgd 2.0.29, so we finally
add a PHP binding for it, and port the resp

Implement request #33066: Add GD Image Function gdImageOpenPolygon()

gdImageOpenPolygon() has been introduced with líbgd 2.0.29, so we finally
add a PHP binding for it, and port the respective libgd functionality to
PHP's bundled libgd.

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Add support for gdEffectMultiply

gdLayerMultiply() has been introduced in libgd 2.1.1, and as such would have
been already available for imagelayereffect() with a system libgd. We port

Add support for gdEffectMultiply

gdLayerMultiply() has been introduced in libgd 2.1.1, and as such would have
been already available for imagelayereffect() with a system libgd. We port
the respective code to the bundled libgd, and also make IMG_EFFECT_MULTIPLY
available to userland.

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Switch to libgd anti-aliased drawing API

Instead of rolling our own in the bundled libgd, we use libgd's anti-aliased
drawing API. This way imageantialias() is also available, when built

Switch to libgd anti-aliased drawing API

Instead of rolling our own in the bundled libgd, we use libgd's anti-aliased
drawing API. This way imageantialias() is also available, when built against
a system libgd.

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Remove further remains of the old antialiasing support

Curiously, while the external GD claims "just a few vestiges after switching
to the fast, memory-cheap implementation from PHP-gd",

Remove further remains of the old antialiasing support

Curiously, while the external GD claims "just a few vestiges after switching
to the fast, memory-cheap implementation from PHP-gd", that stuff was still
in the bundled GD.

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Port variable image resolution support from libgd 2.1.0

The PHP binding for this feature will be submitted as a separate PR.

trailing whitespace removal

typo fixes - https://github.com/vlajos/misspell_fixer

imagettftext() uses the last charactermap it found and not the one you want

Summary:
This caused issues when you picked a font with multiple maps, it wouldn't
pick the unicode versio

imagettftext() uses the last charactermap it found and not the one you want

Summary:
This caused issues when you picked a font with multiple maps, it wouldn't
pick the unicode version but instead pick the last one it saw. Change so
we cache on a per encoding level. There was even a todo list item in the code.

In an ideal world we can probably iterate through at font write time.

Test Plan:
See said unit test, it's Apache Licensed font included

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