# Cross-compilation image for x86_64 based on Debian 12
# Matches the runtime environment exactly

FROM debian:12

# Set Rustup mirrors (Aliyun)
ENV RUSTUP_UPDATE_ROOT=https://mirrors.aliyun.com/rustup/rustup \
    RUSTUP_DIST_SERVER=https://mirrors.aliyun.com/rustup

# Install Rust toolchain
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    ca-certificates \
    && curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable \
    && rm -rf /var/lib/apt/lists/*

ENV PATH="/root/.cargo/bin:${PATH}"

# Install build dependencies
# Note: libyuv, libvpx are built from source below for static linking
RUN apt-get update && apt-get install -y --no-install-recommends \
    # Build tools
    build-essential \
    pkg-config \
    cmake \
    nasm \
    yasm \
    git \
    libclang-dev \
    llvm \
    mold \
    wget \
    # Core system libraries
    libasound2-dev \
    libv4l-dev \
    libudev-dev \
    zlib1g-dev \
    # Note: libjpeg-turbo is built from source below for static linking
    # Video codec libraries (dynamic, for software fallback)
    libx264-dev \
    libx265-dev \
    # Audio codec
    libopus-dev \
    # Hardware acceleration
    libva-dev \
    libdrm-dev \
    libmfx-dev \
    # X11 libraries (for VAAPI)
    libx11-dev \
    libxcb1-dev \
    libxau-dev \
    libxdmcp-dev \
    && rm -rf /var/lib/apt/lists/*

# Build static libjpeg-turbo from source (needed by libyuv)
RUN git clone --depth 1 https://github.com/libjpeg-turbo/libjpeg-turbo /tmp/libjpeg-turbo \
    && cd /tmp/libjpeg-turbo \
    && cmake -B build -DCMAKE_BUILD_TYPE=Release -DCMAKE_POSITION_INDEPENDENT_CODE=ON \
        -DCMAKE_INSTALL_PREFIX=/opt/one-kvm-libs/x86_64-linux-gnu \
        -DENABLE_SHARED=OFF -DENABLE_STATIC=ON \
    && cmake --build build -j$(nproc) \
    && cmake --install build \
    && rm -rf /tmp/libjpeg-turbo

# Build static libyuv from source (uses libjpeg-turbo headers)
RUN git clone --depth 1 https://github.com/lemenkov/libyuv /tmp/libyuv \
    && cd /tmp/libyuv \
    && mkdir build && cd build \
    && cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_POSITION_INDEPENDENT_CODE=ON \
        -DCMAKE_PREFIX_PATH=/opt/one-kvm-libs/x86_64-linux-gnu \
        -DCMAKE_INSTALL_PREFIX=/opt/one-kvm-libs/x86_64-linux-gnu \
    && make -j$(nproc) \
    && mkdir -p /opt/one-kvm-libs/x86_64-linux-gnu/lib \
    && cp libyuv.a /opt/one-kvm-libs/x86_64-linux-gnu/lib/ \
    && cp -r ../include /opt/one-kvm-libs/x86_64-linux-gnu/ \
    && rm -rf /tmp/libyuv

# Build static libvpx from source
RUN git clone --depth 1 https://github.com/webmproject/libvpx /tmp/libvpx \
    && cd /tmp/libvpx \
    && ./configure --prefix=/opt/one-kvm-libs/x86_64-linux-gnu \
        --enable-static --disable-shared --enable-pic \
        --disable-examples --disable-tools --disable-docs \
    && make -j$(nproc) \
    && make install \
    && rm -rf /tmp/libvpx

# Download and build FFmpeg with minimal configuration for encoding only
RUN mkdir -p /tmp/ffmpeg-build && cd /tmp/ffmpeg-build \
    && wget -q https://files.mofeng.run/src/image/other/ffmpeg.tar.gz \
    && tar -xzf ffmpeg.tar.gz \
    && cd ffmpeg/ffmpeg-rockchip \
    && export PKG_CONFIG_PATH="/opt/one-kvm-libs/x86_64-linux-gnu/lib/pkgconfig:$PKG_CONFIG_PATH" \
    && ./configure \
        --prefix=/opt/one-kvm-libs/x86_64-linux-gnu \
        --enable-gpl \
        --enable-version3 \
        --disable-shared \
        --enable-static \
        --enable-pic \
        # Hardware acceleration
        --enable-libdrm \
        --enable-vaapi \
        --enable-libmfx \
        # Software encoding libraries
        --enable-libx264 \
        --enable-libx265 \
        --enable-libvpx \
        # Disable programs and docs
        --disable-programs \
        --disable-doc \
        --disable-htmlpages \
        --disable-manpages \
        --disable-podpages \
        --disable-txtpages \
        # Disable network
        --disable-network \
        --disable-protocols \
        # Disable unused libraries
        --disable-avformat \
        --disable-swscale \
        --disable-swresample \
        --disable-avfilter \
        --disable-avdevice \
        --disable-postproc \
        # Disable all decoders
        --disable-decoders \
        # Disable all encoders, enable only needed ones
        --disable-encoders \
        --enable-encoder=h264_vaapi \
        --enable-encoder=hevc_vaapi \
        --enable-encoder=vp8_vaapi \
        --enable-encoder=vp9_vaapi \
        --enable-encoder=h264_qsv \
        --enable-encoder=hevc_qsv \
        --enable-encoder=libx264 \
        --enable-encoder=libx265 \
        --enable-encoder=libvpx_vp8 \
        --enable-encoder=libvpx_vp9 \
        # Disable muxers/demuxers
        --disable-muxers \
        --disable-demuxers \
        # Disable parsers except needed ones
        --disable-parsers \
        --enable-parser=h264 \
        --enable-parser=hevc \
        --enable-parser=vp8 \
        --enable-parser=vp9 \
        # Disable BSFs except needed ones
        --disable-bsfs \
        --enable-bsf=h264_mp4toannexb \
        --enable-bsf=hevc_mp4toannexb \
        # Disable hardware decoding
        --disable-hwaccels \
        # Disable other unused features
        --disable-indevs \
        --disable-outdevs \
        --disable-filters \
        --disable-debug \
    && make -j$(nproc) \
    && make install \
    && cd / \
    && rm -rf /tmp/ffmpeg-build

# Add Rust target
RUN rustup target add x86_64-unknown-linux-gnu

# Copy entrypoint script
COPY build/cross/entrypoint.sh /usr/local/bin/cross-entrypoint.sh
RUN chmod +x /usr/local/bin/cross-entrypoint.sh

# Configure environment for static linking
ENV RUSTFLAGS="-C link-arg=-fuse-ld=mold" \
    PKG_CONFIG_PATH="/opt/one-kvm-libs/x86_64-linux-gnu/lib/pkgconfig" \
    LIBRARY_PATH="/opt/one-kvm-libs/x86_64-linux-gnu/lib" \
    CPATH="/opt/one-kvm-libs/x86_64-linux-gnu/include" \
    FFMPEG_STATIC=1 \
    LIBYUV_STATIC=1

ENTRYPOINT ["/usr/local/bin/cross-entrypoint.sh"]