Ubuntu 移植 ffmpeg + x264

背景

直接编译移植的ffmpeg是与 arm-linux 下类似的。

详情参考: arm linux 移植 FFMPEG库 + x264

host平台　　 ：Ubuntu 16.04

x264 　 ：20171212

ffmpeg 　 ：4.0.1

gcc　　 ：5.4.0

使用以下脚本编译

##
#    Copyright By Schips, All Rights Reserved
#    https://gitee.com/schips/

#    File Name:  make.sh
#    Created  :  Mon 02 Sep 2019 08:05:53 PM HKT
##
#!/bin/sh
BASE=`pwd`
BUILD_HOST=arm-linux
OUTPUT_PATH=${BASE}/install

OTHER_LIB=${OUTPUT_PATH}/__all_without_ffmpeg

make_dirs () {
    #为了方便管理，创建有关的目录
    cd ${BASE} && mkdir compressed install source -p
}

tget () { #try wget
    filename=`basename $1`
    echo "Downloading [${filename}]..."
    if [ ! -f ${filename} ];then
        wget $1
    fi

    echo "[OK] Downloaded [${filename}] "
}

download_package () {
    cd ${BASE}/compressed
    tget http://download.videolan.org/pub/videolan/x264/snapshots/x264-snapshot-20171212-2245.tar.bz2
    tget http://ffmpeg.org/releases/ffmpeg-4.0.1.tar.bz2
    tget http://download.videolan.org/videolan/x265/x265_2.6.tar.gz
}

tar_package () {
    cd ${BASE}/compressed
    ls * > /tmp/list.txt
    for TAR in `cat /tmp/list.txt`
    do
        tar -xf $TAR -C  ../source
    done
    rm -rf /tmp/list.txt
}

make_x264() {
    cd ${BASE}/source/x264*

    CC=${BUILD_HOST}-gcc 
    ./configure 
    --host=${BUILD_HOST} 
    --enable-shared 
    --enable-static 
    --enable-pic 
    --prefix=${OUTPUT_PATH}/x264 
    --cross-prefix=${BUILD_HOST}- 
    --disable-asm

    make -j4 && make install
}

make_x265() {
    #sudo apt-get install cmake -y
    # 其他编译选项可以 通过 在 cmake ../source 以后 ccmake ../source 可以查看 ( ccmake 可以通过 sudo apt-get install cmake-curses-gui  进行安装 )
        cd ${BASE}/source/x265*/source
    # 每次还原 CMakeLists 文件
    if [ ! -f CMakeLists.txt.old ];then
        # 不存在就创建
        cp CMakeLists.txt  CMakeLists.txt.old
    else
        # 存在就还原
        cp CMakeLists.txt.old  CMakeLists.txt
    fi
    # 获取 工具链所在位置 下面的操作为的是在 CMakeLists.txt 中插入下面内容
        #set( CMAKE_SYSTEM_NAME Linux  )
        #set( CMAKE_SYSTEM_PROCESSOR ARM  )
        #set( CMAKE_C_COMPILER "/opt/hisi-linux/x86-arm/arm-hisiv500-linux/target/bin/arm-hisiv500-linux-gcc" )
        #set( CMAKE_CXX_COMPILER "/opt/hisi-linux/x86-arm/arm-hisiv500-linux/target/bin/arm-hisiv500-linux-g++" )
        #set( CMAKE_FIND_ROOT_PATH "/opt/hisi-linux/x86-arm/arm-hisiv500-linux/target/bin/" )
    GCC_FULL_PATH=`whereis ${BUILD_HOST}-gcc | awk -F: '{ print $2 }' | awk '{print $1}'` # 防止多个结果
    GCC_DIR=`dirname ${GCC_FULL_PATH}/`
    sed -i "1iset( CMAKE_SYSTEM_NAME Linux  )"                         CMakeLists.txt
    sed -i "2aset( CMAKE_SYSTEM_PROCESSOR ARM  )"                      CMakeLists.txt
    sed -i "2aset( CMAKE_C_COMPILER ${GCC_DIR}/${BUILD_HOST}-gcc  )"   CMakeLists.txt
    sed -i "2aset( CMAKE_CXX_COMPILER ${GCC_DIR}/${BUILD_HOST}-g++  )" CMakeLists.txt
    sed -i "2aset( CMAKE_FIND_ROOT_PATH ${GCC_DIR} )"                  CMakeLists.txt
    cmake ../source
    # 指定安装路径
    sed -i "1iset( CMAKE_INSTALL_PREFIX "${BASE}/install/x265"  )"     cmake_install.cmake
    make && make install
}
prepare_other_lib () {
    # 这一个是针对 ffmpeg 方便管理外部库使用的
    # 核心思想是把 所有的库都放到一起，再让 ffmpeg ld的时候在这里找（而不是添加多行） --extra-cflags="-I${X264_DIR}/include -I${xxx}/include" 
    cd ${BASE}/install/
    rm ${OTHER_LIB} -rf
    ls > /tmp/list.txt
    mkdir ${OTHER_LIB} -p
    for sub_dir in `cat /tmp/list.txt`
    do
        cp ${sub_dir}/* ${OTHER_LIB} -r -v
    done
    rm -rf /tmp/list.txt
}
make_ffmpeg() {
    cd ${BASE}/source/ffmpeg*
    ./configure 
    --cross-prefix=${BUILD_HOST}- 
    --enable-cross-compile 
    --target-os=linux 
    --cc=${BUILD_HOST}-gcc 
    --arch=arm 
    --prefix=${OUTPUT_PATH}/ffmpeg 
    --enable-shared 
    --enable-static 
    --enable-gpl 
    --enable-nonfree 
    --enable-ffmpeg 
    --disable-ffplay 
    --enable-swscale 
    --enable-pthreads 
    --disable-armv5te 
    --disable-armv6 
    --disable-armv6t2 
    --disable-yasm 
    --disable-stripping 
    --enable-libx264 
    --extra-cflags=-I${OTHER_LIB}/include 
    --extra-ldflags=-L${OTHER_LIB}/lib
    make clean && make -j4 && make install
}
echo "Using ${BUILD_HOST}-gcc"
make_dirs
download_package
tar_package
make_x264
#make_x265
prepare_other_lib
make_ffmpeg

exit $?
    --enable-ffserver 
    --enable-libx265 

配置完成以后可能会有这个警告，但是不影响后续的结果：

License: nonfree and unredistributable
Creating configuration files ...

WARNING: The --disable-yasm option is only provided for compatibility and will be
 removed in the future. Use --enable-x86asm / --disable-x86asm instead.
WARNING: unknown architecture linux
WARNING: using libx264 without pkg-config

此后，就可以使用编译好的库进行开发，也可以根据需要将库拷贝到 /usr/lib目录下

测试：

 ffmpeg -f video4linux2 -s 320x240 -i /dev/video0 /mnt/tmp/test.avi 
 # video4linux2 代表Linux下  
 # /dev/video0 代表摄像头设备 
 # /mnt/tmp/test.avi代表输出路径