Add libvvenc VVC encoding support of FFmpeg

Only master version of FFmpeg supports VVC encoding via external feature libvvenc.
Later we still wait for next new FFmpeg release version to be released.

Fix the flags, disabled FFmpeg old versions than 7.0 & removed empty lines

- Martin Eesmaa

scripts.d/50-vvenc.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+
+SCRIPT_REPO="https://github.com/fraunhoferhhi/vvenc.git"
+
+ffbuild_enabled() {
+    [[ $ADDINS_STR == *4.4* ]] && return -1
+    [[ $ADDINS_STR == *5.0* ]] && return -1
+    [[ $ADDINS_STR == *5.1* ]] && return -1
+    [[ $ADDINS_STR == *6.0* ]] && return -1
+    [[ $ADDINS_STR == *6.1* ]] && return -1
+    [[ $ADDINS_STR == *7.0* ]] && return -1
+    return 0
+}
+
+ffbuild_dockerbuild() {
+    mkdir build && cd build
+
+    local fixarm64=""
+    if [[ $TARGET == *arm64 ]]; then
+        fixarm64 = "-DVVENC_ENABLE_X86_SIMD=OFF -DVVENC_ENABLE_ARM_SIMD=OFF"
+    fi
+
+    cmake -DCMAKE_TOOLCHAIN_FILE="$FFBUILD_CMAKE_TOOLCHAIN" -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_INSTALL_PREFIX="$FFBUILD_PREFIX" $fixarm64 ..
+    make -j$(nproc)
+    make install
+}
+
+ffbuild_configure() {
+    [[ $ADDINS_STR == *4.4* ]] && return 0
+    [[ $ADDINS_STR == *5.0* ]] && return 0
+    [[ $ADDINS_STR == *5.1* ]] && return 0
+    [[ $ADDINS_STR == *6.0* ]] && return 0
+    [[ $ADDINS_STR == *6.1* ]] && return 0
+    [[ $ADDINS_STR == *7.0* ]] && return 0
+    echo --enable-libvvenc
+}
+
+ffbuild_unconfigure() {
+    [[ $ADDINS_STR == *4.4* ]] && return 0
+    [[ $ADDINS_STR == *5.0* ]] && return 0
+    [[ $ADDINS_STR == *5.1* ]] && return 0
+    [[ $ADDINS_STR == *6.0* ]] && return 0
+    [[ $ADDINS_STR == *6.1* ]] && return 0
+    [[ $ADDINS_STR == *7.0* ]] && return 0
+    echo --disable-libvvenc
+}