gst-libav: contrib -> opt

gst-libav/.footprint

@@ -0,0 +1,4 @@
+drwxr-xr-x	root/root	usr/
+drwxr-xr-x	root/root	usr/lib/
+drwxr-xr-x	root/root	usr/lib/gstreamer-1.0/
+-rwxr-xr-x	root/root	usr/lib/gstreamer-1.0/libgstlibav.so

gst-libav/.signature

@@ -0,0 +1,5 @@
+untrusted comment: verify with /etc/ports/opt.pub
+RWSE3ohX2g5d/c5t8S7WIGutqUXlYXtRqgu0BTnHQc7VfzTxxtaW3nspfEP/fMBWd5BTAPknyWhDFFLhn6/y4rS05QiPTxBC/Qc=
+SHA256 (Pkgfile) = c2ffe1d09ddc7b72bb59f52d9b26e73804c55c4ad551f92b90e88ee67787083e
+SHA256 (.footprint) = 2b4603029b15032a74098cf497de9777c10b2c1d1fcca733daa90fdac79a1073
+SHA256 (gst-libav-1.18.1.tar.xz) = 39a717bc2613efbbba19df3cf5cacff0987471fc8281ba2c5dcdeaded79c2ed8

gst-libav/Pkgfile

@@ -0,0 +1,22 @@
+# Description: Gstreamer libav Plugin.
+# URL: https://gstreamer.freedesktop.org/modules/gst-libav.html
+# Maintainer: Danny Rawlins, crux at romster dot me
+# Depends on: ffmpeg gst-plugins-base
+
+name=gst-libav
+version=1.18.1
+release=1
+source=(https://gstreamer.freedesktop.org/src/$name/$name-$version.tar.xz)
+
+build() {
+	meson build $name-$version \
+		--prefix /usr \
+		--libexecdir=/usr/lib \
+		-D buildtype=plain \
+		-D b_ndebug=true \
+		-D package-name="GStreamer (CRUX Linux)" \
+		-D package-origin="https://crux.nu/"
+
+	meson compile -C build -j ${JOBS:-1}
+	DESTDIR=$PKG meson install -C build
+}