d0fa1a58da
background: DNN (deep neural network) is a sub module of libavfilter, and FATE/dnn is unit test for the DNN module, one unit test for one dnn layer. The unit tests are not based on the APIs exported by libavfilter, they just directly call into the functions within DNN submodule. There is an issue when run the following command: build$ ../ffmpeg/configure --disable-static --enable-shared make make fate-dnn-layer-pad And part of error message: tests/dnn/dnn-layer-pad-test.o: In function `test_with_mode_symmetric': /work/media/ffmpeg/build/src/tests/dnn/dnn-layer-pad-test.c:73: undefined reference to `dnn_execute_layer_pad' The root cause is that function dnn_execute_layer_pad is a LOCAL symbol in libavfilter.so, and so the linker could not find it when build dnn-layer-pad-test. To check it, just run: readelf -s libavfilter/libavfilter.so | grep dnn So, add dependency in fate/dnn Makefile with ffmpeg static libraries. This is the same method used in fate/checkasm Signed-off-by: Guo, Yejun <yejun.guo@intel.com> Signed-off-by: Pedro Arthur <bygrandao@gmail.com>
FFmpeg README
FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
Libraries
libavcodecprovides implementation of a wider range of codecs.libavformatimplements streaming protocols, container formats and basic I/O access.libavutilincludes hashers, decompressors and miscellaneous utility functions.libavfilterprovides a mean to alter decoded Audio and Video through chain of filters.libavdeviceprovides an abstraction to access capture and playback devices.libswresampleimplements audio mixing and resampling routines.libswscaleimplements color conversion and scaling routines.
Tools
- ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
- ffplay is a minimalistic multimedia player.
- ffprobe is a simple analysis tool to inspect multimedia content.
- Additional small tools such as
aviocat,ismindexandqt-faststart.
Documentation
The offline documentation is available in the doc/ directory.
The online documentation is available in the main website and in the wiki.
Examples
Coding examples are available in the doc/examples directory.
License
FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.
Contributing
Patches should be submitted to the ffmpeg-devel mailing list using
git format-patch or git send-email. Github pull requests should be
avoided because they are not part of our review process and will be ignored.