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• Evolution #3742 (Fermé) : Autorisation d’un redacteur à modifier document publié ?

  3 mai 2017, par cedric -

  doublon de #3382 du coup

• Trouble building ffmpeg with cuda for windows 32 with visual studio 2022

  27 juillet 2022, par manou

  Here is my building process

  


  I open mingw32 from the x64 Native Tools Command Prompt for VS 2022

  


  then in the mingw32 shell :

  


  # cd /
# ./c/Program\ Files/Microsoft\ Visual\ Studio/2022/Community/VC/Auxiliary/Build/vcvars32.bat
# cd ~
# pacman -Sy diffutils git make gcc yasm pkg-config --noconfirm
# git clone --depth 1 https://git.ffmpeg.org/ffmpeg.git ffmpeg 
# git clone https://git.videolan.org/git/ffmpeg/nv-codec-headers.git nv-codec-headers 
# cd nv-codec-headers/
# make PREFIX=/usr/local
# make install PREFIX=/usr/local
# cd ..
# mkdir nv_sdk
# cp -r /c/Program\ Files/NVIDIA\ GPU\ Computing\ Toolkit/CUDA/v11.7/lib/Win32/* nv_sdk
# cp -r /c/Program\ Files/NVIDIA\ GPU\ Computing\ Toolkit/CUDA/v11.7/include/* nv_sdk
# export PATH="/c/Program Files/Microsoft Visual Studio/2022/Community/VC/Tools/MSVC/14.32.31326/bin/Hostx86/x86/":$PATH
# export PATH="/c/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v11.7/bin/":$PATH
# ./configure --disable-everything --enable-decoder=h264 --enable-decoder=hevc --enable-cross-compile --disable-avdevice --disable-swresample --disable-postproc --disable-avfilter --target-os=mingw32 --enable-cuda-nvcc --enable-nonfree --toolchain=msvc --extra-cflags=-I../nv_sdk --extra-ldflags=" -m32 -L../nv_sdk" --enable-shared --shlibdir=SHARED_LIBS --arch=x86_32 --enable-runtime-cpudetect --enable-w32threads
# make -j8
# make install


  


  first I have a bunch of warnings during the making looking like that :
libavutil/opt.c(1075): warning C4133: 'fonction' : types incompatibles - de 'AVPixelFormat *' à 'int *'

  


  And finally the make install returns :

  


  EXTERN_PREFIX="_" AR="lib.exe" NM="dumpbin.exe -symbols" ./compat/windows/makedef libavutil/libavutil.ver libavutil/adler32.o libavutil/aes.o libavutil/aes_ctr.o libavutil/audio_fifo.o libavutil/avsscanf.o libavutil/avstring.o libavutil/base64.o libavutil/blowfish.o libavutil/bprint.o libavutil/buffer.o libavutil/camellia.o libavutil/cast5.o libavutil/channel_layout.o libavutil/color_utils.o libavutil/cpu.o libavutil/crc.o libavutil/des.o libavutil/detection_bbox.o libavutil/dict.o libavutil/display.o libavutil/dovi_meta.o libavutil/downmix_info.o libavutil/encryption_info.o libavutil/error.o libavutil/eval.o libavutil/fifo.o libavutil/file.o libavutil/file_open.o libavutil/film_grain_params.o libavutil/fixed_dsp.o libavutil/float_dsp.o libavutil/frame.o libavutil/hash.o libavutil/hdr_dynamic_metadata.o libavutil/hdr_dynamic_vivid_metadata.o libavutil/hmac.o libavutil/hwcontext.o libavutil/hwcontext_d3d11va.o libavutil/hwcontext_dxva2.o libavutil/imgutils.o libavutil/integer.o libavutil/intmath.o libavutil/lfg.o libavutil/lls.o libavutil/log.o libavutil/log2_tab.o libavutil/lzo.o libavutil/mastering_display_metadata.o libavutil/mathematics.o libavutil/md5.o libavutil/mem.o libavutil/murmur3.o libavutil/opt.o libavutil/parseutils.o libavutil/pixdesc.o libavutil/pixelutils.o libavutil/random_seed.o libavutil/rational.o libavutil/rc4.o libavutil/reverse.o libavutil/ripemd.o libavutil/samplefmt.o libavutil/sha.o libavutil/sha512.o libavutil/slicethread.o libavutil/spherical.o libavutil/stereo3d.o libavutil/tea.o libavutil/threadmessage.o libavutil/time.o libavutil/timecode.o libavutil/tree.o libavutil/twofish.o libavutil/tx.o libavutil/tx_double.o libavutil/tx_float.o libavutil/tx_int32.o libavutil/utils.o libavutil/version.o libavutil/video_enc_params.o libavutil/x86/cpu.o libavutil/x86/cpuid.o libavutil/x86/fixed_dsp.o libavutil/x86/fixed_dsp_init.o libavutil/x86/float_dsp.o libavutil/x86/float_dsp_init.o libavutil/x86/imgutils.o libavutil/x86/imgutils_init.o libavutil/x86/lls.o libavutil/x86/lls_init.o libavutil/x86/tx_float.o libavutil/x86/tx_float_init.o libavutil/xga_font_data.o libavutil/xtea.o > libavutil/avutil-57.def
Could not create temporary library.
make: *** [ffbuild/library.mak:118: libavutil/avutil-57.dll] Error 1


  


  What am I doing wrong ?
shall I install others packets from pacman ?

  


• Adding prebuild static library to android studio

  24 mars 2017, par David Barishev

  I have build ffmpeg libraries statically for x86 android using a custom configuration.Now i wanted to add them in my android project.

  Im using ffmpeg 3.2.git, android studio 2.3.

  I created a folder named distribution which had my binaries, located the root of my project.
  Here is a file tree :

  |__distribution
  
  | |__avcodec
  
  | | |__include
  
  | | | |__avcodec.h
  
  | | |__lib
  
  | | | |__x86
  
  | | | | |__libavcodec.a
  
  | |__avfilter
  
  | | |__include
  
  | | | |__avfilter.h
  
  | | |__lib
  
  | | | |__x86
  
  | | | | |__libavfilter.a
  
  | |__avformat
  
  | | |__include
  
  | | | |__avformat.h
  
  | | |__lib
  
  | | | |__x86
  
  | | | | |__libavformat.a
  
  | |__avutil
  
  | | |__include
  
  | | | |__avutil.h
  
  | | |__lib
  
  | | | |__x86
  
  | | | | |__libavutil.a
  
  | |__swresample
  
  | | |__include
  
  | | | |__swresample.h
  
  | | |__lib
  
  | | | |__x86
  
  | | | | |__libswresample.a

  I edited my cmake to include the libraries :

  add_library(
  
           native-lib
  
           SHARED
  
           src/main/cpp/native-lib.cpp )
  
  
  
  set(distribution_DIR ${CMAKE_SOURCE_DIR}/../distribution)
  
  
  
  add_library(lib_avcodec STATIC IMPORTED)
  
  set_target_properties(lib_avcodec PROPERTIES IMPORTED_LOCATION
  
      ${distribution_DIR}/avcodec/lib/${ANDROID_ABI}/libavcodec.a)
  
  
  
  add_library(lib_avfilter STATIC IMPORTED)
  
  set_target_properties(lib_avfilter PROPERTIES IMPORTED_LOCATION
  
      ${distribution_DIR}/avfilter/lib/${ANDROID_ABI}/libavfilter.a)
  
  
  
  add_library(lib_avformat STATIC IMPORTED)
  
  set_target_properties(lib_avformat PROPERTIES IMPORTED_LOCATION
  
      ${distribution_DIR}/avformat/lib/${ANDROID_ABI}/libavformat.a)
  
  
  
  add_library(lib_avutil STATIC IMPORTED)
  
  set_target_properties(lib_avutil PROPERTIES IMPORTED_LOCATION
  
      ${distribution_DIR}/avutil/lib/${ANDROID_ABI}/libavutil.a)
  
  
  
  add_library(lib_swresample STATIC IMPORTED)
  
  set_target_properties(lib_swresample PROPERTIES IMPORTED_LOCATION
  
      ${distribution_DIR}/swresample/lib/${ANDROID_ABI}/libswresample.a)
  
  
  
  
  
  
  
  include_directories(
  
                             ${distribution_DIR}/avcodec/include
  
                             ${distribution_DIR}/avfilter/include
  
                             ${distribution_DIR}/avformat/include
  
                             ${distribution_DIR}/avutil/include
  
                             ${distribution_DIR}/swresample/include)
  
  
  
  
  
  target_link_libraries( 
  
                         native-lib
  
  
  
                         lib_avcodec
  
                         lib_avfilter
  
                         lib_avformat
  
                         lib_avutil
  
                         lib_swresample
  
                          )

  I also restricted the build to only x86, in my app build.gradle :

  ndk {
  
              // Specifies the ABI configurations of your native
  
              // libraries Gradle should build and package with your APK.
  
              abiFilters 'x86'
  
      }

  The project gradle sync worked successfully.
  I edited my cpp file to try to use the libraries, and i noticed something weird,i couldn’t reference the headers with the library beforehand, only the header name itself (eg. #include "libavformat/avformat.h" doesn’t work, #include "avformat.h" works).
  I suspect this is because of the headers reference, that they are not tied to a library.
  How can i fix it ?

  Also this makes the project build fail, since in the static libraries headers, there is a reference to other part of the library (eg avformat includes avcodec),but they reference it with the library name beforehand, and as i have said earlier, it doesn’t work.

  Here is the relevant build log part :

  ../../../../../distribution/avformat/include\avformat.h:319:10: fatal error: 'libavcodec/avcodec.h' file not found
  
    #include "libavcodec/avcodec.h"
  
             ^