[gstreamer] Initial import of libvpx to support VP8/9 video in Gstrea…

…mer. Contributes MER#595

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "upstream"]
+	path = upstream
+	url = https://git.merproject.org/mirror/libvpx.git

rpm/0001-armv7-use-hard-float.patch

@@ -0,0 +1,13 @@
+--- a/build/make/configure.sh
++++ b/build/make/configure.sh
+@@ -943,8 +943,8 @@ process_common_toolchain() {
+ #endif
+ EOF
+             fi
+-            check_add_cflags  -march=armv7-a -mfloat-abi=${float_abi}
+-            check_add_asflags -march=armv7-a -mfloat-abi=${float_abi}
++            check_add_cflags  -march=armv7-a -mfloat-abi=hard
++            check_add_asflags -march=armv7-a -mfloat-abi=hard
+
+             if enabled neon || enabled neon_asm; then
+               check_add_cflags -mfpu=neon #-ftree-vectorize

rpm/libvpx.spec

@@ -0,0 +1,81 @@
+Name:           libvpx
+Version:        1.7.0
+Release:        1
+Summary:        VPx codec library
+License:        BSD-3-Clause and GPL-2.0+
+Group:          Applications/Multimedia
+Url:            http://www.webmproject.org/
+Source0:        %{name}-%{version}.tar.gz
+Patch1:         0001-armv7-use-hard-float.patch
+%ifarch %{ix86} x86_64
+BuildRequires:  yasm
+%endif
+
+%description
+WebM is an open, royalty-free, media file format designed for the web.
+
+WebM defines the file container structure, video and audio formats.
+WebM files consist of video streams compressed with the VPx video codecs
+and audio streams compressed with the Vorbis audio codec.
+The WebM file structure is based on the Matroska container.
+
+%package devel
+Summary:        VPx codec library - Development headers
+License:        BSD-3-Clause and GPL-2.0+
+Group:          Development/Languages/C and C++
+Requires:       %{name} = %{version}
+
+%description devel
+Development headers and library
+
+WebM is an open, royalty-free, media file format designed for the web.
+
+WebM defines the file container structure, video and audio formats.
+WebM files consist of video streams compressed with the VPx video codecs
+and audio streams compressed with the Vorbis audio codec.
+The WebM file structure is based on the Matroska container.
+
+%prep
+%setup -q -n %{name}-%{version}/upstream
+%patch1 -p1
+
+%build
+
+./configure \
+    --prefix=%{_prefix} --libdir=%{_libdir} \
+    --disable-unit-tests --disable-examples --disable-docs \
+    --enable-debug --enable-shared --disable-static \
+    --enable-vp8 --enable-vp9 --enable-vp9-highbitdepth \
+    --enable-multithread --enable-postproc \
+    --enable-experimental --enable-spatial-svc \
+%ifarch aarch64
+    --disable-neon --disable-neon_asm \
+%endif
+%ifarch %{ix86} x86_64
+    --as=yasm \
+%endif
+    --enable-pic --size-limit=8192x8192
+
+make %{?_smp_mflags} verbose=yes GEN_EXAMPLES=
+
+%install
+%make_install verbose=yes GEN_EXAMPLES=
+
+%clean
+rm -rf %{buildroot}
+
+%post -n %{name} -p /sbin/ldconfig
+
+%postun -n %{name} -p /sbin/ldconfig
+
+%files
+%defattr(-, root, root)
+%doc LICENSE AUTHORS README CHANGELOG
+%{_libdir}/libvpx.so.*
+
+%files devel
+%defattr(-,root,root)
+%{_includedir}/vpx/
+%{_libdir}/pkgconfig/vpx.pc
+%{_libdir}/libvpx.so
+