#!/usr/bin/env bash
set -ex
DEPS_DIR=$(dirname ${BASH_SOURCE[0]})
cd "$DEPS_DIR"
. common

VERSION=7.1
FILENAME=ffmpeg-$VERSION.tar.xz
PROJECT_DIR=ffmpeg-$VERSION
SHA256SUM=40973D44970DBC83EF302B0609F2E74982BE2D85916DD2EE7472D30678A7ABE6

cd "$SOURCES_DIR"

if [[ -d "$PROJECT_DIR" ]]
then
    echo "$PWD/$PROJECT_DIR" found
else
    get_file "https://ffmpeg.org/releases/$FILENAME" "$FILENAME" "$SHA256SUM"
    tar xf "$FILENAME"  # First level directory is "$PROJECT_DIR"
fi

mkdir -p "$BUILD_DIR/$PROJECT_DIR"
cd "$BUILD_DIR/$PROJECT_DIR"

if [[ "$HOST" = win32 ]]
then
    ARCH=x86
elif [[ "$HOST" = win64 ]]
then
    ARCH=x86_64
else
    echo "Unsupported host: $HOST" >&2
    exit 1
fi

# -static-libgcc to avoid missing libgcc_s_dw2-1.dll
# -static to avoid dynamic dependency to zlib
export CFLAGS='-static-libgcc -static'
export CXXFLAGS="$CFLAGS"
export LDFLAGS='-static-libgcc -static'

if [[ -d "$HOST" ]]
then
    echo "'$PWD/$HOST' already exists, not reconfigured"
    cd "$HOST"
else
    mkdir "$HOST"
    cd "$HOST"

    conf=(
        --prefix="$INSTALL_DIR/$HOST"
        --enable-cross-compile
        --target-os=mingw32
        --arch="$ARCH"
        --cross-prefix="${HOST_TRIPLET}-"
        --cc="${HOST_TRIPLET}-gcc"
        --extra-cflags="-O2 -fPIC"
        --enable-shared
        --disable-static
        --disable-programs
        --disable-doc
        --disable-swscale
        --disable-postproc
        --disable-avfilter
        --disable-avdevice
        --disable-network
        --disable-everything
        --disable-vulkan
        --disable-vaapi
        --disable-vdpau
        --enable-swresample
        --enable-decoder=h264
        --enable-decoder=hevc
        --enable-decoder=av1
        --enable-decoder=pcm_s16le
        --enable-decoder=opus
        --enable-decoder=aac
        --enable-decoder=flac
        --enable-decoder=png
        --enable-protocol=file
        --enable-demuxer=image2
        --enable-parser=png
        --enable-zlib
        --enable-muxer=matroska
        --enable-muxer=mp4
        --enable-muxer=opus
        --enable-muxer=flac
        --enable-muxer=wav
    )

    "$SOURCES_DIR/$PROJECT_DIR"/configure "${conf[@]}"
fi

make -j
make install