Add librubberband and its dependencies

Closes #19

scripts.d/40-fftw3.sh

@@ -0,0 +1,56 @@
+#!/bin/bash
+
+# http://fftw.org/download.html
+FFTW3_SRC="http://fftw.org/fftw-3.3.8.tar.gz"
+FFTW3_SHA512="ab918b742a7c7dcb56390a0a0014f517a6dff9a2e4b4591060deeb2c652bf3c6868aa74559a422a276b853289b4b701bdcbd3d4d8c08943acf29167a7be81a38"
+
+ffbuild_enabled() {
+    # Dependency of GPL-Only librubberband
+    [[ $VARIANT == gpl* ]] || return -1
+    return 0
+}
+
+ffbuild_dockerstage() {
+    to_df "ADD $SELF /stage.sh"
+    to_df "RUN run_stage"
+}
+
+ffbuild_dockerbuild() {
+    mkdir fftw3
+    cd fftw3
+
+    check-wget fftw3.tar.gz "$FFTW3_SRC" "$FFTW3_SHA512"
+    tar xaf fftw3.tar.gz
+    rm fftw3.tar.gz
+    cd fftw*
+
+    local myconf=(
+        --prefix="$FFBUILD_PREFIX"
+        --disable-shared
+        --enable-static
+        --disable-doc
+        --with-our-malloc
+        --enable-threads
+        --with-combined-threads
+        --with-incoming-stack-boundary=2
+        --enable-sse2
+        --enable-avx
+        --enable-avx2
+    )
+
+    if [[ $TARGET == win* ]]; then
+        myconf+=(
+            --host="$FFBUILD_TOOLCHAIN"
+        )
+    else
+        echo "Unknown target"
+        return -1
+    fi
+
+    ./configure "${myconf[@]}"
+    make -j$(nproc)
+    make install
+
+    cd ../..
+    rm -rf fftw3
+}

scripts.d/45-libsamplerate.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+LIBSR_REPO="https://github.com/libsndfile/libsamplerate.git"
+LIBSR_COMMIT="36dfd68836a185182775a0ca760dd2bbbcd53e30"
+
+ffbuild_enabled() {
+    # Dependency of GPL-Only librubberband
+    [[ $VARIANT == gpl* ]] || return -1
+    return 0
+}
+
+ffbuild_dockerstage() {
+    to_df "ADD $SELF /stage.sh"
+    to_df "RUN run_stage"
+}
+
+ffbuild_dockerbuild() {
+    git-mini-clone "$LIBSR_REPO" "$LIBSR_COMMIT" libsr
+    cd libsr
+
+    mkdir build
+    cd build
+
+    cmake -DCMAKE_TOOLCHAIN_FILE="$FFBUILD_CMAKE_TOOLCHAIN" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX="$FFBUILD_PREFIX" -DBUILD_SHARED_LIBS=NO -DBUILD_TESTING=NO -DLIBSAMPLERATE_EXAMPLES=OFF -DLIBSAMPLERATE_INSTALL=YES ..
+    make -j$(nproc)
+    make install
+
+    cd ../..
+    rm -rf libsr
+}

scripts.d/50-rubberband.sh

@@ -0,0 +1,60 @@
+#!/bin/bash
+
+# https://breakfastquay.com/rubberband/
+RUBBERBAND_SRC="https://breakfastquay.com/files/releases/rubberband-1.9.0.tar.bz2"
+
+ffbuild_enabled() {
+    [[ $VARIANT == gpl* ]] || return -1
+    return 0
+}
+
+ffbuild_dockerstage() {
+    to_df "ADD $SELF /stage.sh"
+    to_df "RUN run_stage"
+}
+
+ffbuild_dockerbuild() {
+    mkdir rubberband
+    cd rubberband
+
+    wget "$RUBBERBAND_SRC" -O rubberband.tar.gz || return -1
+    tar xaf rubberband.tar.gz || return -1
+    rm rubberband.tar.gz
+    cd rubberband* || return -1
+
+    local myconf=(
+        --prefix="$FFBUILD_PREFIX"
+        --disable-shared
+        --enable-static
+        --disable-ladspa
+        --disable-vamp
+        --disable-programs
+    )
+
+    if [[ $TARGET == win* ]]; then
+        myconf+=(
+            --host="$FFBUILD_TOOLCHAIN"
+        )
+    else
+        echo "Unknown target"
+        return -1
+    fi
+
+    ./configure "${myconf[@]}" || return -1
+    make -j$(nproc) || return -1
+    make install || return -1
+
+    # Fix static linking
+    echo "Requires.private: fftw3 samplerate" >> "$FFBUILD_PREFIX"/lib/pkgconfig/rubberband.pc
+
+    cd ../..
+    rm -rf rubberband
+}
+
+ffbuild_configure() {
+    echo --enable-librubberband
+}
+
+ffbuild_unconfigure() {
+    echo --disable-librubberband
+}