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• Anomalie #3566 : Restaurer une révision ne restaure pas toujours tous les champs modifiés

  10 octobre 2016, par marcimat ☺☮☯♫

  Je confirme que ça remarche (et parfaitement avec la nouvelle fonction) en remettant l’appel à auteur_associer() après le pipeline post_edition.
  Le problème se situe donc bien à ce niveau. Il va falloir trouver comment permettre de dire à Révisions de lever le flag plus tôt que post_insertion… avant donc le passage à pre_insertion_liens ;

  ou réussir à lui faire lever ce flag dans pre_insertion_liens en transmettant un paramètre indiquant que c’est le premier lien ici (mais ça ferait passer ce paramètre de auteur_associer() jusqu’au pipeline dans un grand nombre de fonction. Pas idéal non plus.

  Un pipeline trig_insertion() juste après l’obtention de l’identifiant ? …

• iOS, FFmpeg render video with UIimage vs OpenGL

  23 janvier 2013, par finlir

  I have an IP camera that streams h264 video over RTSP. On iOS I use FFmpeg to capture the RTSP stream and decode the frames then render with an UIimage and UIimageview.

  I have seen examples of of rendering video from FFmpeg, they all seem to use OpenGL ES or the SDL library.

  My question is what are the benefits for using OpenGL ? since rendering with UIimage is easy and seem to work fine.

• How to add a dependency for a package ?

  25 septembre 2021, par Meh.

  I just built and installed FFmpeg (./configure --disable-asm).
  
And I need to use libavformat in my C++ project.

  


  I use FindFFmpeg.cmake, and when I build, I get a bunch of undefined symbol errors so I have to find libraries :

  


      find_package(FFmpeg COMPONENTS avcodec avformat avutil swresample swscale)
    find_library(COREMEDIA_LIBRARY CoreMedia)
    find_library(VIDEOTOOLBOX_LIBRARY VideoToolbox)
    find_library(COREVIDEO_LIBRARY CoreVideo)
    find_library(AUDIOTOOLBOX_LIBRARY AudioToolbox)
    find_library(SECURITY_LIBRARY Security)

## In another file:

  target_link_libraries(videocommon PRIVATE
    FFmpeg::avcodec
    FFmpeg::avformat
    FFmpeg::avutil
    FFmpeg::swscale
    FFmpeg::swresample
    ${COREMEDIA_LIBRARY}
    ${VIDEOTOOLBOX_LIBRARY}
    ${COREVIDEO_LIBRARY}
    ${AUDIOTOOLBOX_LIBRARY}
    ${SECURITY_LIBRARY}
  )



  


  However, I still get errors from libavformat.a(tls_securetransport.o) :

  


    "_SSLRead", referenced from:
      _tls_read in libavformat.a(tls_securetransport.o)
  "_SSLCreateContext", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SSLSetCertificate", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SSLSetIOFuncs", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SSLSetSessionOption", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SSLSetPeerDomainName", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SecIdentityCreate", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SecTrustEvaluate", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SecTrustSetAnchorCertificates", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SSLClose", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
      _tls_close in libavformat.a(tls_securetransport.o)
  "_SSLHandshake", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SSLSetConnection", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SSLCopyPeerTrust", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)


  


  This is the #include part from the file in question tls_securetransport.c :

  


  #include &#xA;&#xA;#include "avformat.h"&#xA;#include "avio_internal.h"&#xA;#include "internal.h"&#xA;#include "network.h"&#xA;#include "os_support.h"&#xA;#include "url.h"&#xA;#include "tls.h"&#xA;#include "libavcodec/internal.h"&#xA;#include "libavutil/avstring.h"&#xA;#include "libavutil/opt.h"&#xA;#include "libavutil/parseutils.h"&#xA;&#xA;#include <security></security>Security.h>&#xA;#include <security></security>SecureTransport.h>&#xA;#include <corefoundation></corefoundation>CoreFoundation.h>&#xA;

  


  Why is this happening ?

  


  I also get the same result if I were to build with OpenSSL or LibreSSL. What is causing the problem ? My project or incorrectly building FFmpeg ?

  


  If I were to use LibreSSL :

  


  #cmakelists.txt:
find_package(LibreSSL)

#linker
  target_link_libraries(videocommon PRIVATE
    FFmpeg::avcodec
    FFmpeg::avformat
    FFmpeg::avutil
    FFmpeg::swscale
    FFmpeg::swresample
    ${LIBRESSL_LIBRARIES} 
    ${COREMEDIA_LIBRARY}
    ${VIDEOTOOLBOX_LIBRARY}
    ${COREVIDEO_LIBRARY}
    ${AUDIOTOOLBOX_LIBRARY}
  )

#full error
Undefined symbols for architecture x86_64:
  "_tls_config_error", referenced from:
      _ff_tls_open in libavformat.a(tls_libtls.o)
  "_tls_config_insecure_noverifytime", referenced from:
      _ff_tls_open in libavformat.a(tls_libtls.o)
  "_tls_accept_cbs", referenced from:
      _ff_tls_open in libavformat.a(tls_libtls.o)
  "_tls_connect_cbs", referenced from:
      _ff_tls_open in libavformat.a(tls_libtls.o)