如何编译omx-bellagio

1.0 如何编译

下载：https://github.com/felipec/libomxil-bellagio
1.1 首先打开其configure.ac，然后做如下替换：

#CFLAGS="${CFLAGS} -Werror"
CFLAGS="${CFLAGS}"

不然会报错pthreads 找不到。

1.2
libx265下载：
http://hg.videolan.org/x265

libx264下载：
http://download.videolan.org/pub/videolan/x264/snapshots/

ffmpeg 5.10下载

ffmpeg编译脚本：

#! /bin/bash


x264_lib=/home/caizc/project/A-work/enflame/openMax/OpenMax/x264-snapshot-20081217-2245/libx264/lib

export PKG_CONFIG_PATH=${PKG_CONFIG_PATH}:${x264_lib}/pkgconfig

./configure \
--prefix=/home/caizc/project/A-work/enflame/openMax/OpenMax/FFmpeg-n0.5.10/libffmpeg \
--enable-shared \
--enable-static \
--enable-gpl \
--enable-libx264 \
--enable-swscale \
--extra-cflags=-I/home/caizc/project/A-work/enflame/openMax/OpenMax/x264-snapshot-20081217-2245/libx264/include \
--extra-ldflags=-L/home/caizc/project/A-work/enflame/openMax/OpenMax/x264-snapshot-20081217-2245/libx264/lib \

autoreconf -i

#因为考虑到需要添加ffmpeg的编解码插件，所以我们需要添加ffmpeg.
#ffmpeg版本取0.5.10，相应的libx264也要加上
export FFMPEG_CFLAGS="-I/home/caizc/project/A-work/enflame/openMax/OpenMax/omx-depends/libffmpeg/include"
export FFMPEG_LIBS="-L/home/caizc/project/A-work/enflame/openMax/OpenMax/omx-depends/libffmpeg/lib -lmyavcodec -lmyavformat -lmyavutil -lmyswscale"

./configure --prefix=xxx
#一般这个时候都会报错，需要先安装
sudo apt install libomxil-bellagio-dev
#编译
make
#安装
make install
#检查
make check

1.3 然后开始执行bin

#在执行开始先设置ffmpeg和libx264路径
export LD_LIBRARY_PATH=/home/caizc/project/A-work/enflame/openMax/OpenMax/omx-depends/libffmpeg/lib:/home/caizc/project/A-work/enflame/openMax/OpenMax/omx-depends/libx264/lib:/home/caizc/project/A-work/enflame/openMax/OpenMax/libomxil-bellagio-master/libomx/lib

./omxregister-bellagio /home/caizc/project/A-work/enflame/openMax/OpenMax/omx-depends/libomx/lib/bellagio

然后就可以看到：

./omxregister-bellagio /home/caizc/project/A-work/enflame/openMax/OpenMax/omx-depends/libomx/lib/bellagio -v

 Scanning directory /home/caizc/project/A-work/enflame/openMax/OpenMax/omx-depends/libomx/lib/bellagio/

 Scanning openMAX libary /home/caizc/project/A-work/enflame/openMax/OpenMax/omx-depends/libomx/lib/bellagio/libomxffmpeg.so
Component OMX.st.audio_decoder registered
  Specific role OMX.st.audio_decoder.mp3 registered
  Specific role OMX.st.audio_decoder.ogg registered
  Specific role OMX.st.audio_decoder.aac registered
  Specific role OMX.st.audio_decoder.g726 registered
Component OMX.st.video_decoder registered
  Specific role OMX.st.video_decoder.mpeg4 registered
  Specific role OMX.st.video_decoder.avc registered
Component OMX.st.video_colorconv.ffmpeg registered
  Specific role OMX.st.video_colorconv.ffmpeg registered
Component OMX.st.video_encoder registered
  Specific role OMX.st.video_encoder.mpeg4 registered
Component OMX.st.audio_encoder registered
  Specific role OMX.st.audio_encoder.mp3 registered
  Specific role OMX.st.audio_encoder.aac registered
  Specific role OMX.st.audio_encoder.g726 registered

 Scanning openMAX libary /home/caizc/project/A-work/enflame/openMax/OpenMax/omx-depends/libomx/lib/bellagio/libomxfilereader.so
Component OMX.st.audio_filereader registered

 Scanning openMAX libary /home/caizc/project/A-work/enflame/openMax/OpenMax/omx-depends/libomx/lib/bellagio/libomxparser3gp.so
Component OMX.st.parser.3gp registered
  Specific role OMX.st.parser.3gp registered

 Scanning openMAX libary /home/caizc/project/A-work/enflame/openMax/OpenMax/omx-depends/libomx/lib/bellagio/libomximagejpeg.so
Component OMX.st.image_decoder.jpeg registered
  Specific role OMX.st.image_decoder.jpeg registered
Component OMX.st.image_encoder.jpeg registered
  Specific role OMX.st.image_encoder.jpeg registered

 Scanning openMAX libary /home/caizc/project/A-work/enflame/openMax/OpenMax/omx-depends/libomx/lib/bellagio/libomxaudio_effects.so
Component OMX.st.volume.component registered
  Specific role OMX.st.volume.component registered
Component OMX.st.audio.mixer registered
  Specific role OMX.st.audio.mixer registered

 Scanning openMAX libary /home/caizc/project/A-work/enflame/openMax/OpenMax/omx-depends/libomx/lib/bellagio/libomxvideosrc.so
Component OMX.st.video_src registered
  Specific role OMX.st.video_src registered

 Scanning openMAX libary /home/caizc/project/A-work/enflame/openMax/OpenMax/omx-depends/libomx/lib/bellagio/libomxcamera.so
Component OMX.st.v4l.camera_source registered
  Specific role OMX.st.v4l.camera_source registered

 Scanning openMAX libary /home/caizc/project/A-work/enflame/openMax/OpenMax/omx-depends/libomx/lib/bellagio/libomxmux.so
Component OMX.st.mux.3gp registered
  Specific role OMX.st.mux.3gp registered

 Scanning openMAX libary /home/caizc/project/A-work/enflame/openMax/OpenMax/omx-depends/libomx/lib/bellagio/libomxclocksrc.so
Component OMX.st.clocksrc registered
  Specific role OMX.st.clocksrc registered

 Scanning openMAX libary /home/caizc/project/A-work/enflame/openMax/OpenMax/omx-depends/libomx/lib/bellagio/libomxfbdev.so
Component OMX.st.fbdev.fbdev_sink registered
  Specific role OMX.st.fbdev.fbdev_sink registered
Component OMX.st.video.scheduler registered
  Specific role OMX.st.video.scheduler registered

 17 OpenMAX IL ST static components with 22 roles succesfully scanned

将mp4转换为h264裸流：

ffmpeg -i input.mp4 -c:v copy -an -bsf:v h264_mp4toannexb out.264
#执行
./omxvideodectest -o outfile.yuv /home/caizc/Videos/out.264

./ffmpeg -i /home/caizc/Videos/3.264 -s 320x240 my.264

./ffmpeg -i /home/caizc/Videos/3.264  test.avi