Dockerfile.armv7hf

ARG PYTHON_VERSION_SHORT=3.7
ARG OPENCV_VERSION=4.3.0
ARG CPU_CORES=4

FROM arm32v7/python:${PYTHON_VERSION_SHORT}-buster

ARG DEBIAN_FRONTEND=noninteractive

RUN set -e; \
    apt-get update; \
    apt-get install -y --no-install-recommends \
        apt-utils \
        build-essential; \
    apt-get install -y --no-install-recommends \
        # Downloading utils
        unzip \
        wget \
        # Build utils
        cmake \
        gcc \
        # Required dependencies
        python-numpy \
        libavcodec-dev \
        libavformat-dev \
        libswscale-dev \
        libgstreamer-plugins-base1.0-dev \
        # Optional dependencies
        libtbb2 \
        libtbb-dev \
        libjpeg-dev \
        libpng-dev \
        libopenexr-dev \
        libtiff-dev \
        libwebp-dev \
        # Video device drivers
        libv4l-dev \
        libdc1394-22-dev

RUN pip install numpy

ARG OPENCV_VERSION
ENV OPENCV_VERSION=$OPENCV_VERSION

# Download latest source and contrib
RUN set -e; \
    cd /tmp; \
    wget -c -nv -O opencv.zip https://github.com/opencv/opencv/archive/$OPENCV_VERSION.zip; \
    unzip opencv.zip; \
    wget -c -nv -O opencv_contrib.zip https://github.com/opencv/opencv_contrib/archive/$OPENCV_VERSION.zip; \
    unzip opencv_contrib.zip

ARG PYTHON_VERSION_SHORT
ENV PYTHON_VERSION=$PYTHON_VERSION_SHORT

ARG CPU_CORES

# Build opencv
RUN set -e; \
    cd /tmp/opencv-$OPENCV_VERSION; \
    mkdir build; \
    cd build; \
    cmake -D CMAKE_BUILD_TYPE=RELEASE \
        -D OPENCV_EXTRA_MODULES_PATH=/tmp/opencv_contrib-$OPENCV_VERSION/modules \
        -D CMAKE_INSTALL_PREFIX=/usr/local \
        # Build without GUI support
        -D WITH_QT=OFF \
        -D WITH_GTK=OFF \
        # Build without GPU support
        -D WITH_OPENCL=OFF \
        -D WITH_CUDA=OFF \
        -D BUILD_opencv_gpu=OFF \
        -D BUILD_opencv_gpuarithm=OFF \
        -D BUILD_opencv_gpubgsegm=OFF \
        -D BUILD_opencv_gpucodec=OFF \
        -D BUILD_opencv_gpufeatures2d=OFF \
        -D BUILD_opencv_gpufilters=OFF \
        -D BUILD_opencv_gpuimgproc=OFF \
        -D BUILD_opencv_gpulegacy=OFF \
        -D BUILD_opencv_gpuoptflow=OFF \
        -D BUILD_opencv_gpustereo=OFF \
        -D BUILD_opencv_gpuwarping=OFF \
        # Build with python
        -D BUILD_opencv_python3=ON \
        -D BUILD_opencv_python2=OFF \
        -D PYTHON_DEFAULT_EXECUTABLE=$(which python${PYTHON_VERSION}) \
        -D OPENCV_SKIP_PYTHON_LOADER=ON \
        -D OPENCV_PYTHON3_INSTALL_PATH=$(python${PYTHON_VERSION} -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") \
        # Ignore all unnecessary stages
        -D BUILD_opencv_apps=OFF \
        -D BUILD_EXAMPLES=OFF \
        -D INSTALL_C_EXAMPLES=OFF \
        -D INSTALL_PYTHON_EXAMPLES=OFF \
        -D BUILD_DOCS=OFF \
        -D BUILD_PERF_TESTS=OFF \
        -D BUILD_TESTS=OFF \
        ..; \
    make -j$CPU_CORES; \
    make install; \
    ldconfig; \
    # Clean up
    make clean; \
    cd /tmp; \
    rm -rf /tmp/*
RUN ln -s /usr/local/lib/python3.7/site-packages/cv2.cpython-37m-arm-linux-gnueabihf.so /usr/local/lib/python3.7/site-packages/cv2.so

# Install dldt
WORKDIR /
RUN apt-get install -y git build-essential curl wget libssl-dev ca-certificates libboost-regex-dev libgtk2.0-dev \
            pkg-config automake libtool autoconf libcairo2-dev libpango1.0-dev libglib2.0-dev libgtk2.0-dev libswscale-dev libavcodec-dev \
            libavformat-dev libgstreamer1.0-0 gstreamer1.0-plugins-base libusb-1.0-0-dev libopenblas-dev libpng-dev
RUN git clone https://github.com/opencv/dldt.git && cd /dldt/inference-engine && git submodule init && git submodule update --recursive
RUN sed -i -- "s/return std::move(ret);/return ret;/g" /dldt/inference-engine/thirdparty/ade/sources/ade/source/execution_engine.cpp
ENV OpenCV_DIR=/usr/local/share/opencv4
RUN pip3 install cython
RUN cd /dldt && mkdir build && cd build && cmake \
    -DCMAKE_BUILD_TYPE=Release \
    -DENABLE_MKL_DNN=OFF \
    -DENABLE_CLDNN=OFF \
    -DENABLE_GNA=OFF \
    -DENABLE_SSE42=OFF \
    -DTHREADING=SEQ \
    -DENABLE_PYTHON=ON \
    -DPYTHON_EXECUTABLE=/usr/bin/python3.7 \
    -DPYTHON_LIBRARY=/usr/local/lib/libpython3.7m.so \
    -DPYTHON_INCLUDE_DIR=/usr/local/include/python3.7m/ .. && make -j$CPU_CORES && make install && cd .. && rm -r build

ENV PYTHONPATH=/dldt/bin/armv7l/Release/lib/python_api/python3.7

RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp* /root/.cache/pip/wheels/*