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  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Mise à jour de la version 0.1 vers 0.2

    24 juin 2013, par

    Explications des différents changements notables lors du passage de la version 0.1 de MediaSPIP à la version 0.3. Quelles sont les nouveautés
    Au niveau des dépendances logicielles Utilisation des dernières versions de FFMpeg (>= v1.2.1) ; Installation des dépendances pour Smush ; Installation de MediaInfo et FFprobe pour la récupération des métadonnées ; On n’utilise plus ffmpeg2theora ; On n’installe plus flvtool2 au profit de flvtool++ ; On n’installe plus ffmpeg-php qui n’est plus maintenu au (...)

  • Amélioration de la version de base

    13 septembre 2013

    Jolie sélection multiple
    Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
    Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)

Sur d’autres sites (8798)

  • gcc : Undefined Reference Error

    16 mars 2014, par jamie_y

    I would like to use a function 'ff_load_image' defined in ffmpeg/libavfilter/lavfutils.h.

    program.c

    #include "../ffmpeg/libavfilter/lavfutils.h"
    

    
int main ()
    
{
    
  uint8_t* data;
    

    
  int linesize, width, height, log_ctx;
    

    
  int i = ff_load_image(&data, &linesize, &width, &height, AV_PIX_FMT_RGB24, "blue.jpg", &log_ctx);
    
}

    Running

    gcc -I$HOME/ffmpeg/include program.c -L$HOME/ffmpeg/lib -lavfilter -lavcodec -lavutil

    gives undefined reference errors.

    program.c: In function \u2018main\u2019:
    
program.c:9: warning: passing argument 1 of \u2018ff_load_image\u2019 from incompatible pointer type
    
../ffmpeg/libavfilter/lavfutils.h:39: note: expected \u2018uint8_t **\u2019 but argument is of type \u2018uint8_t *\u2019
    
program.c:9: warning: passing argument 2 of \u2018ff_load_image\u2019 makes pointer from integer without a cast
    
../ffmpeg/libavfilter/lavfutils.h:39: note: expected \u2018int *\u2019 but argument is of type \u2018int\u2019
    
program.c:9: warning: passing argument 3 of \u2018ff_load_image\u2019 makes pointer from integer without a cast
    
../ffmpeg/libavfilter/lavfutils.h:39: note: expected \u2018int *\u2019 but argument is of type \u2018int\u2019
    
program.c:9: warning: passing argument 4 of \u2018ff_load_image\u2019 makes pointer from integer without a cast
    
../ffmpeg/libavfilter/lavfutils.h:39: note: expected \u2018int *\u2019 but argument is of type \u2018int\u2019
    
program.c:9: warning: passing argument 5 of \u2018ff_load_image\u2019 makes pointer from integer without a cast
    
../ffmpeg/libavfilter/lavfutils.h:39: note: expected \u2018enum AVPixelFormat *\u2019 but argument is of type \u2018int\u2019
    
program.c:9: warning: passing argument 7 of \u2018ff_load_image\u2019 makes pointer from integer without a cast
    
../ffmpeg/libavfilter/lavfutils.h:39: note: expected \u2018void *\u2019 but argument is of type \u2018int\u2019
    
/home/jamiey/ffmpeg/lib/libavfilter.a(lavfutils.o): In function `ff_load_image':
    
/home/jamiey/ffmpeg/libavfilter/lavfutils.c:38: undefined reference to `av_register_all'
    
/home/jamiey/ffmpeg/libavfilter/lavfutils.c:40: undefined reference to `av_find_input_format'
    
/home/jamiey/ffmpeg/libavfilter/lavfutils.c:41: undefined reference to `avformat_open_input'
    
/home/jamiey/ffmpeg/libavfilter/lavfutils.c:66: undefined reference to `av_read_frame'
    
/home/jamiey/ffmpeg/libavfilter/lavfutils.c:92: undefined reference to `avformat_close_input'
    
/home/jamiey/ffmpeg/libavfilter/lavfutils.c:92: undefined reference to `avformat_close_input'
    
/home/jamiey/ffmpeg/libavfilter/lavfutils.c:92: undefined reference to `avformat_close_input'
    
/home/jamiey/ffmpeg/lib/libavcodec.a(frame_thread_encoder.o): In function `ff_frame_thread_encoder_free':
    
/home/jamiey/ffmpeg/libavcodec/frame_thread_encoder.c:225: undefined reference to `pthread_join'
    
/home/jamiey/ffmpeg/lib/libavcodec.a(frame_thread_encoder.o): In function `ff_frame_thread_encoder_init':
    
/home/jamiey/ffmpeg/libavcodec/frame_thread_encoder.c:200: undefined reference to `pthread_create'
    
/home/jamiey/ffmpeg/lib/libavcodec.a(pthread_frame.o): In function `ff_frame_thread_free':
    
/home/jamiey/ffmpeg/libavcodec/pthread_frame.c:575: undefined reference to `pthread_join'
    
/home/jamiey/ffmpeg/lib/libavcodec.a(pthread_frame.o): In function `ff_frame_thread_init':
    
/home/jamiey/ffmpeg/libavcodec/pthread_frame.c:705: undefined reference to `pthread_create'
    
/home/jamiey/ffmpeg/lib/libavcodec.a(pthread_slice.o): In function `ff_slice_thread_init':
    
/home/jamiey/ffmpeg/libavcodec/pthread_slice.c:220: undefined reference to `pthread_create'
    
/home/jamiey/ffmpeg/lib/libavcodec.a(pthread_slice.o): In function `ff_slice_thread_free':
    
/home/jamiey/ffmpeg/libavcodec/pthread_slice.c:118: undefined reference to `pthread_join'
    
/home/jamiey/ffmpeg/lib/libavutil.a(rational.o): In function `av_d2q':
    
/home/jamiey/ffmpeg/libavutil/rational.c:115: undefined reference to `log'
    
/home/jamiey/ffmpeg/libavutil/rational.c:118: undefined reference to `floor'
    
/home/jamiey/ffmpeg/lib/libavutil.a(eval.o): In function `eval_expr':
    
/home/jamiey/ffmpeg/libavutil/eval.c:183: undefined reference to `trunc'
    
/home/jamiey/ffmpeg/libavutil/eval.c:182: undefined reference to `ceil'
    
/home/jamiey/ffmpeg/libavutil/eval.c:181: undefined reference to `floor'
    
/home/jamiey/ffmpeg/libavutil/eval.c:241: undefined reference to `pow'
    
/home/jamiey/ffmpeg/libavutil/eval.c:177: undefined reference to `exp'
    
/home/jamiey/ffmpeg/libavutil/eval.c:176: undefined reference to `exp'
    
/home/jamiey/ffmpeg/libavutil/eval.c:287: undefined reference to `pow'
    
/home/jamiey/ffmpeg/libavutil/eval.c:278: undefined reference to `floor'
    
/home/jamiey/ffmpeg/lib/libavutil.a(eval.o): In function `av_strtod':
    
/home/jamiey/ffmpeg/libavutil/eval.c:112: undefined reference to `pow'
    
/home/jamiey/ffmpeg/libavutil/eval.c:103: undefined reference to `pow'
    
/home/jamiey/ffmpeg/libavutil/eval.c:109: undefined reference to `pow'
    
/home/jamiey/ffmpeg/lib/libavutil.a(eval.o): In function `parse_primary':
    
/home/jamiey/ffmpeg/libavutil/eval.c:394: undefined reference to `sinh'
    
/home/jamiey/ffmpeg/libavutil/eval.c:395: undefined reference to `cosh'
    
/home/jamiey/ffmpeg/libavutil/eval.c:396: undefined reference to `tanh'
    
/home/jamiey/ffmpeg/libavutil/eval.c:397: undefined reference to `sin'
    
/home/jamiey/ffmpeg/libavutil/eval.c:398: undefined reference to `cos'
    
/home/jamiey/ffmpeg/libavutil/eval.c:399: undefined reference to `tan'
    
/home/jamiey/ffmpeg/libavutil/eval.c:400: undefined reference to `atan'
    
/home/jamiey/ffmpeg/libavutil/eval.c:401: undefined reference to `asin'
    
/home/jamiey/ffmpeg/libavutil/eval.c:402: undefined reference to `acos'
    
/home/jamiey/ffmpeg/libavutil/eval.c:403: undefined reference to `exp'
    
/home/jamiey/ffmpeg/libavutil/eval.c:404: undefined reference to `log'
    
/home/jamiey/ffmpeg/libavutil/eval.c:405: undefined reference to `fabs'
    
collect2: ld returned 1 exit status

    However, I was successful in running functions in other library, such as the ones in "ffmpeg/libavcodec/avcodec.h". Why is this happening to "ffmpeg/libavfilter/lavfutils.h" ?

  • lcl : Disentangle pointers to input data and decompression buffer

    2 août 2014, par Diego Biurrun
    lcl : Disentangle pointers to input data and decompression buffer

    This is cleaner and avoids a cast plus a related const qualifier warning.
    • [DH] libavcodec/lcldec.c

  • Revision ba5c7efd4e : Merge changes I4e2aeaef,Ie3e478ef * changes : vpxdec warning errors addressed

    5 août 2014, par Jim Bankoski

    Merge changes I4e2aeaef,Ie3e478ef

    * changes :
    vpxdec warning errors addressed
    cast enums to int to avoid gcc warning in pred_common

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