Add NE10 to enable more neon optimization for libopus

builder/scripts.d/45-libNE10.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+
+SCRIPT_REPO="https://github.com/gnattu/Ne10.git"
+SCRIPT_COMMIT="545f4f18014cdbf9fb5fb1a9f5d24000200dfa8b"
+
+ffbuild_enabled() {
+    [[ $TARGET == win* ]] && return -1
+    [[ $TARGET == *arm64 ]] && return 0
+    return -1
+}
+
+ffbuild_dockerbuild() {
+    git-mini-clone "$SCRIPT_REPO" "$SCRIPT_COMMIT" Ne10
+    cd Ne10
+
+    mkdir -p build && cd build
+
+    local myconf=(
+        -DGNULINUX_PLATFORM=ON # macOS is also "GNU Linux". This target means all unix-like target
+    )
+
+    if [[ $TARGET == linux* ]]; then
+        myconf+=(
+            -DCMAKE_TOOLCHAIN_FILE="$FFBUILD_CMAKE_TOOLCHAIN"
+        )
+    elif [[ $TARGET == mac* ]]; then
+        :
+    else
+        echo "Unknown target"
+        return -1
+    fi
+
+    export NE10_LINUX_TARGET_ARCH=aarch64
+    cmake .. "${myconf[@]}"
+    make -j$(nproc)
+    # NE10 does not have install method, we have to copy files with shell command
+    cp modules/libNE10.a "$FFBUILD_PREFIX"/lib/libNE10.a
+    cp -R ../inc "$FFBUILD_PREFIX"/include/libNE10
+}

builder/scripts.d/50-libopus.sh

@@ -31,9 +31,38 @@ ffbuild_dockerbuild() {
         return -1
     fi
 
+    if [[ $TARGET == linux* || $TARGET == mac* ]] && [[ $TARGET == *arm64 ]]; then
+        myconf+=(
+            --with-NE10-libraries="$FFBUILD_PREFIX"/lib
+            --with-NE10-includes="$FFBUILD_PREFIX"/include/libNE10
+        )
+    fi
+
+    # reset CLFAGS because libopus may give up optimization if current CFLAGS contains value
+    CFLAGS_BACKUP="$CFLAGS"
+
+    # For some reason libopus will not add optimization flag, we have to set it ourselves
+    if [[ $TARGET == mac* ]]; then
+        export CFLAGS="-O3"
+    else
+        export CFLAGS="-O3 -fPIC -DPIC"
+    fi
+
     ./configure "${myconf[@]}"
     make -j$(nproc)
     make install
+
+    export CFLAGS="$CFLAGS_BACKUP"
+
+    if [[ $TARGET == *arm64 ]]; then
+        if [[ $TARGET == mac* ]]; then
+          gsed -i 's/-lopus/-lopus -lNE10/' "$FFBUILD_PREFIX"/lib/pkgconfig/opus.pc
+          gsed -i 's/-I${includedir}\/opus/-I${includedir}\/opus -I${includedir}\/libNE10/' "$FFBUILD_PREFIX"/lib/pkgconfig/opus.pc
+      else
+          sed -i 's/-lopus/-lopus -lNE10/' "$FFBUILD_PREFIX"/lib/pkgconfig/opus.pc
+          sed -i 's/-I${includedir}\/opus/-I${includedir}\/opus -I${includedir}\/libNE10/' "$FFBUILD_PREFIX"/lib/pkgconfig/opus.pc
+      fi
+    fi
 }
 
 ffbuild_configure() {