Hu Chunming / vpt_ascend_arm

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b092645e   Hu Chunming   更新readme 
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  # 支持系统：
      arm
      
  # 发布日志
      1. 支持GB28181 UDP
c58547cd   Hu Chunming   提交编译文件和运行配置 
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  # 注意
      由于子库和opencv原因，三方库都要添加 _GLIBCXX_USE_CXX11_ABI=0 编译
09c2d08c   Hu Chunming   arm交付版 
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b092645e   Hu Chunming   更新readme 
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  # 三方库编译
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  ### ffmpeg编译
  ~~~
6c1a5cc0   Hu Chunming   优化readme 
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  ./configure --enable-debug --extra-cflags=-g --extra-ldflags=-g --disable-optimizations --disable-stripping --disable-x86asm --enable-nonfree --disable-vaapi --extra-cflags=-fPIC --enable-shared --enable-pic --enable-ffplay --prefix=./debug
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  ~~~
  其中以下是用于调试的，编译release可以去掉：
  ~~~
  --enable-debug --extra-cflags=-g --extra-ldflags=-g --disable-optimizations --disable-stripping
  ~~~
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  编译release版本
  ~~~
  ./configure --disable-x86asm --enable-nonfree --disable-vaapi --extra-cflags=-fPIC --enable-shared --enable-pic --enable-ffplay --prefix=./release
  ~~~
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  然后 make , make install
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  ##### 支持H264版本编译
  ~~~
  export PKG_CONFIG_PATH=/home/cmhu/vpt_ascend_arm/3rdparty/ffmpeg-4.4.4/x264/release/lib/pkgconfig:$PKG_CONFIG_PATH
  ~~~
  主要h264的pkgconfig文件xh264.pc中的prefix路径，改为绝对路径比较容易编译，如改成
  ~~~
  prefix=/home/cmhu/vpt_ascend_arm/3rdparty/ffmpeg-4.4.4/x264/release
  ~~~
  ~~~
  ./configure --prefix=./debug --enable-debug --extra-cflags=-g --extra-ldflags=-g --disable-optimizations --disable-stripping --disable-x86asm --enable-nonfree --disable-vaapi --extra-cflags=-fPIC --enable-shared --enable-pic --enable-ffplay --enable-demuxers --enable-parsers --enable-ffprobe --enable-libx264 --enable-gpl --enable-pthreads --extra-cflags="-I/home/cmhu/vpt_ascend_arm/3rdparty/ffmpeg-4.4.4/x264/release/lib/include" --extra-ldflags="-L/home/cmhu/vpt_ascend_arm/3rdparty/ffmpeg-4.4.4/x264/release/lib"
  ~~~
  其中
  ~~~
  --enable-demuxers --enable-parsers --enable-ffprobe
  ~~~
  是用来支持内存数据的probe的。
  对应的release版本编译命令
  ~~~
  ./configure --prefix=./release --disable-x86asm --enable-nonfree --disable-vaapi --extra-cflags=-fPIC --enable-shared --enable-pic --enable-ffplay --enable-demuxers --enable-parsers --enable-ffprobe --enable-libx264 --enable-gpl --enable-pthreads --extra-cflags="-I/home/cmhu/vpt_ascend_arm/3rdparty/ffmpeg-4.4.4/x264/release/lib/include" --extra-ldflags="-L/home/cmhu/vpt_ascend_arm/3rdparty/ffmpeg-4.4.4/x264/release/lib"
  ~~~
09c2d08c   Hu Chunming   arm交付版 
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  ### jsoncpp/opencv/spdlog 编译
  ~~~
  mkdir build 
  cd ./build
  cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=../release ..
  make -j100
  make install
  ~~~