ffmpeg: split ffplay

ffplay depends on SDL2 which has a lot of dependencies, some systems
like servers may wish to install ffmpeg without ffplay to avoid the
SDL2 dependency

srcpkgs/ffmpeg/template

@@ -2,7 +2,7 @@
 # audacity also needs to be bumped when a new ffmpeg version bumps libavformat's soname!
 pkgname=ffmpeg
 version=4.3.2
-revision=1
+revision=2
 short_desc="Decoding, encoding and streaming software"
 maintainer="Johannes <johannes.brechtmann@gmail.com>"
 license="GPL-3.0-or-later"
@@ -24,6 +24,7 @@ makedepends="zlib-devel bzip2-devel freetype-devel alsa-lib-devel libXfixes-deve
  $(vopt_if nvenc nv-codec-headers) $(vopt_if sndio sndio-devel)
  $(vopt_if dav1d libdav1d-devel) $(vopt_if zimg zimg-devel)
  $(vopt_if webp libwebp-devel) $(vopt_if sofa libmysofa-devel)"
+depends="ffplay>=${version}_${revision}"
 
 build_options="x265 v4l2 vaapi vdpau vpx faac fdk_aac aom nvenc sndio pulseaudio
  dav1d zimg webp sofa"
@@ -183,3 +184,10 @@ ffmpeg-devel_package() {
 		vmove usr/share/man/man3
 	}
 }
+ffplay_package() {
+	short_desc="Simple video player using FFmpeg and SDL2"
+	pkg_install() {
+		vmove usr/bin/ffplay
+		vmove "usr/share/man/man1/ffplay*"
+	}
+}

srcpkgs/ffplay

@@ -0,0 +1 @@
+ffmpeg