Recherche avancée

Sur d’autres sites (9348)

• Evolution #2923 : Remplacement d’un document et date du document

  21 mars 2013, par - Equipement

  Bonjour, Les rédacteurs en question disposent de la possibilité manuelle de modifier la date de chaque document. Ils souhaitent que, lorsqu’ils remplacent un document par une version plus récente, la date du document soit automatiquement modifiée (avec la date du dépôt de la dernière version). (...)

• Using gcovr with FFmpeg

  6 septembre 2010, par Multimedia Mike — FATE Server

  When I started investigating code coverage tools to analyze FFmpeg, I knew there had to be an easier way to do what I was trying to do (obtain code coverage statistics on a macro level for the entire project). I was hoping there was a way to ask the GNU gcov tool to do this directly. John K informed me in the comments of a tool called gcovr. Like my tool from the previous post, gcovr is a Python script that aggregates data collected by gcov. gcovr proves to be a little more competent than my tool.

  Results
  Here is the spreadsheet of results, reflecting FATE code coverage as of this writing. All FFmpeg source files are on the same sheet this time, including header files, sorted by percent covered (ascending), then total lines (descending).

  Methodology
  I wasn’t easily able to work with the default output from the gcovr tool. So I modified it into a tool called gcovr-csv which creates data that spreadsheets can digest more easily.

  • Build FFmpeg using the '-fprofile-arcs -ftest-coverage' in both the extra cflags and extra ldflags configuration options
  • 'make'
  • 'make fate'
  • From build directory : 'gcovr-csv > output.csv'
  • Massage the data a bit, deleting information about system header files (assuming you don’t care how much of /usr/include/stdlib.h is covered — 66%, BTW)

  Leftovers
  I became aware of some spreadsheet limitations thanks to this tool :

  1. OpenOffice can’t process percent values correctly– it imports the percent data from the CSV file but sorts it alphabetically rather than numerically.
  2. Google Spreadsheet expects CSV to really be comma-delimited– forget about any other delimiters. Also, line length is an issue which is why I needed my tool to omit the uncovered ine number ranges, which it does in its default state.

• make : *** [ffbuild/common.mak:67 : libavfilter/vf_nnedi.o] Error 1

  20 janvier 2021, par Madhuraank B

  Am compiling and installing FFMPEG on Raspberry Pi 4
Have installed all the other depnedenices and then I enter the following :

  


  cd ~/ffmpeg_sources && wget -O ffmpeg-snapshot.tar.bz2 https://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2 && tar xjvf ffmpeg-snapshot.tar.bz2 && cd ffmpeg && PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure   --prefix="$HOME/ffmpeg_build"   --pkg-config-flags="--static"   --extra-cflags="-I$HOME/ffmpeg_build/include"   --extra-ldflags="-L$HOME/ffmpeg_build/lib"   --extra-libs="-lpthread -lm"   --bindir="$HOME/bin"   --enable-gpl   --enable-gnutls      --enable-libass   --enable-libfdk-aac   --enable-libfreetype   --enable-libmp3lame   --enable-libopus   --enable-libsvtav1   --enable-libvorbis   --enable-libvpx   --enable-libx264   --enable-libx265   --enable-nonfree && PATH="$HOME/bin:$PATH" make && make install && hash -r


  


  and at the end am getting the following error :

  


  In file included from libavfilter/vf_mcdeint.c:54:

./libavcodec/avcodec.h:1781:35: note: declared here
   
  attribute_deprecated AVFrame *coded_frame;
                                   ^~~~~~~~~~~

CC  libavfilter/vf_median.o
CC  libavfilter/vf_mergeplanes.o
CC  libavfilter/vf_mestimate.o
CC  libavfilter/vf_midequalizer.o
CC  libavfilter/vf_minterpolate.o
CC  libavfilter/vf_misc_vaapi.o
CC  libavfilter/vf_mix.o
CC  libavfilter/vf_mpdecimate.o
CC  libavfilter/vf_neighbor.o
CC  libavfilter/vf_nlmeans.o
CC  libavfilter/vf_nnedi.o


libavfilter/vf_nnedi.c:819:13: error: conflicting types for ‘read’
 static void read(float *dst, size_t n, const float **data)
             ^~~~

In file included from ./libavutil/timer.h:35,
                 from ./libavutil/internal.h:42,
                 from ./libavutil/common.h:532,
                 from libavfilter/vf_nnedi.c:24:
/usr/include/unistd.h:360:16: note: previous declaration of ‘read’ was here
 extern ssize_t read (int __fd, void *__buf, size_t __nbytes) __wur;
                ^~~~

make: *** [ffbuild/common.mak:67: libavfilter/vf_nnedi.o] Error 1


  


  Thanks in advance