Add experimental libva/vaapi support

scripts.d/50-vaapi/50-libva.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+
+LIBVA_REPO="https://github.com/intel/libva.git"
+LIBVA_COMMIT="6e86b4fb4dafa123b1e31821f61da88f10cfbe91"
+
+ffbuild_enabled() {
+    [[ $TARGET != linux* ]] && return -1
+    return 0
+}
+
+ffbuild_dockerbuild() {
+    git-mini-clone "$LIBVA_REPO" "$LIBVA_COMMIT" libva
+    cd libva
+
+    autoreconf -i
+
+    local myconf=(
+        --prefix="$FFBUILD_PREFIX"
+        --disable-shared
+        --enable-static
+        --with-pic
+        --disable-docs
+        --enable-drm
+        --disable-x11
+        --disable-glx
+        --disable-wayland
+    )
+
+    if [[ $TARGET == linux64 ]]; then
+        myconf+=(
+            --host="$FFBUILD_TOOLCHAIN"
+            --with-drivers-path="/usr/lib/x86_64-linux-gnu/dri"
+        )
+    else
+        echo "Unknown target"
+        return -1
+    fi
+
+    ./configure "${myconf[@]}"
+    make -j$(nproc)
+    make install
+
+    echo "Libs.private: -ldl" >> "$FFBUILD_PREFIX"/lib/pkgconfig/libva.pc
+}
+
+ffbuild_configure() {
+    echo --enable-vaapi
+}
+
+ffbuild_unconfigure() {
+    echo --disable-vaapi
+}