addpkg(main/libavif): 1.3.0

- A user has requested `libavif` enablement in `python-pillow`.

- Other existing packages can also be built with `libavif`.

Author: robertkirkman

packages/libavif/build.sh

@@ -0,0 +1,20 @@
+TERMUX_PKG_HOMEPAGE=https://github.com/AOMediaCodec/libavif
+TERMUX_PKG_DESCRIPTION="Library for encoding and decoding .avif files"
+TERMUX_PKG_LICENSE="custom"
+TERMUX_PKG_LICENSE_FILE="LICENSE"
+TERMUX_PKG_MAINTAINER="@termux"
+TERMUX_PKG_VERSION="1.3.0"
+TERMUX_PKG_SRCURL="https://github.com/AOMediaCodec/libavif/archive/refs/tags/v$TERMUX_PKG_VERSION.tar.gz"
+TERMUX_PKG_SHA256=0a545e953cc049bf5bcf4ee467306a2f113a75110edf59e61248873101cd26c1
+TERMUX_PKG_AUTO_UPDATE=true
+TERMUX_PKG_DEPENDS="libaom, libc++, libdav1d, libjpeg-turbo, libpng, libwebp, librav1e, svt-av1"
+TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
+-DAVIF_BUILD_APPS=ON
+-DAVIF_BUILD_MAN_PAGES=ON
+-DAVIF_BUILD_GDK_PIXBUF=ON
+-DAVIF_CODEC_AOM=SYSTEM
+-DAVIF_CODEC_DAV1D=SYSTEM
+-DAVIF_CODEC_RAV1E=SYSTEM
+-DAVIF_CODEC_SVT=SYSTEM
+-DAVIF_LIBYUV=LOCAL
+"

packages/libavif/svt-av1-4.0.patch

@@ -0,0 +1,25 @@
+From 34a14decb6732c8abf01e6135a9a1dd55b58e33a Mon Sep 17 00:00:00 2001
+From: Brad Smith <brad@comstyle.com>
+Date: Sat, 24 Jan 2026 22:05:01 -0500
+Subject: [PATCH] fix(svt): Fix building with SVT-AV1 4.0
+
+---
+ src/codec_svt.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/src/codec_svt.c b/src/codec_svt.c
+index 3c7751333a..e81b30cf3c 100644
+--- a/src/codec_svt.c
++++ b/src/codec_svt.c
+@@ -170,7 +170,11 @@ static avifResult svtCodecEncodeImage(avifCodec * codec,
+ #else
+         svt_config->logical_processors = encoder->maxThreads;
+ #endif
++#if SVT_AV1_CHECK_VERSION(4, 0, 0)
++        svt_config->aq_mode = 2;
++#else
+         svt_config->enable_adaptive_quantization = 2;
++#endif
+         // disable 2-pass
+ #if SVT_AV1_CHECK_VERSION(0, 9, 0)
+         svt_config->rc_stats_buffer = (SvtAv1FixedBuf) { NULL, 0 };