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  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

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  • Undefined reference, using FFMpeg-library (AvCodec) on Ubuntu, 64-bits system

    5 mai 2012, par Anders Branderud

    I am running the example code of the latest FFMpeg-library.
    I have inserted the example code into the file videofecencoder.c :

    /*
    
* copyright (c) 2001 Fabrice Bellard
    
*
    
* This file is part of Libav.
    
*
    
* Libav is free software; you can redistribute it and/or
    
* modify it under the terms of the GNU Lesser General Public
    
* License as published by the Free Software Foundation; either
    
* version 2.1 of the License, or (at your option) any later version.
    
*
    
* Libav is distributed in the hope that it will be useful,
    
* but WITHOUT ANY WARRANTY; without even the implied warranty of
    
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    
* Lesser General Public License for more details.
    
*
    
* You should have received a copy of the GNU Lesser General Public
    
* License along with Libav; if not, write to the Free Software
    
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
    
*/
    
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
    

    

    
#include 
    
#include 
    
#include 
    

    
#ifdef HAVE_AV_CONFIG_H
    
#undef HAVE_AV_CONFIG_H
    
#endif
    

    
#include "libavutil/imgutils.h"
    
#include "libavutil/opt.h"
    
#include "libavcodec/avcodec.h"
    
#include "libavutil/mathematics.h"
    
#include "libavutil/samplefmt.h"
    

    
#define INBUF_SIZE 4096
    
#define AUDIO_INBUF_SIZE 20480
    
#define AUDIO_REFILL_THRESH 4096
    

    
/*
    
* Video encoding example
    
*/
    
static void video_encode_example(const char *filename, int codec_id)
    
{
    
   AVCodec *codec;
    
   AVCodecContext *c= NULL;
    
   int i, out_size, size, x, y, outbuf_size;
    
   FILE *f;
    
   AVFrame *picture;
    
   uint8_t *outbuf;
    
   int nrOfFramesPerSecond  =25;
    
   int nrOfSeconds =1;
    

    

    
   printf("Video encoding\n");
    

    
   /* find the mpeg1 video encoder */
    
   codec = avcodec_find_encoder((CodecID) codec_id);
    
   if (!codec) {
    
       fprintf(stderr, "codec not found\n");
    
       exit(1);
    
   }
    

    
   c = avcodec_alloc_context3(codec);
    
   picture= avcodec_alloc_frame();
    

    
   /* put sample parameters */
    
   c->bit_rate = 400000;
    
   /* resolution must be a multiple of two */
    
   c->width = 352;
    
   c->height = 288;
    
   /* frames per second */
    
   c->time_base= (AVRational){1,25};
    
   c->gop_size = 10; /* emit one intra frame every ten frames */
    
   c->max_b_frames=1;
    
   c->pix_fmt = PIX_FMT_YUV420P;
    

    
   if(codec_id == CODEC_ID_H264)
    
       av_opt_set(c->priv_data, "preset", "slow", 0);
    

    
   /* open it */
    
   if (avcodec_open2(c, codec, NULL) < 0) {
    
       fprintf(stderr, "could not open codec\n");
    
       exit(1);
    
   }
    

    
   f = fopen(filename, "wb");
    
   if (!f) {
    
       fprintf(stderr, "could not open %s\n", filename);
    
       exit(1);
    
   }
    

    
   /* alloc image and output buffer */
    
   outbuf_size = 100000;
    
   outbuf = (uint8_t*) malloc(outbuf_size);
    

    
   /* the image can be allocated by any means and av_image_alloc() is
    
    * just the most convenient way if av_malloc() is to be used */
    
   av_image_alloc(picture->data, picture->linesize,
    
                  c->width, c->height, c->pix_fmt, 1);
    

    
   /* encode 1 second of video */
    
   int nrOfFramesTotal = nrOfFramesPerSecond * nrOfSeconds;
    

    
   /* encode 1 second of video */
    
   for(i=0;i < nrOfFramesTotal; i++) {
    
       fflush(stdout);
    
       /* prepare a dummy image */
    
       /* Y */
    
       for(y=0;yheight;y++) {
    
           for(x=0;xwidth;x++) {
    
               picture->data[0][y * picture->linesize[0] + x] = x + y + i * 3;
    
           }
    
       }
    

    
       /* Cb and Cr */
    
       for(y=0;yheight/2;y++) {
    
           for(x=0;xwidth/2;x++) {
    
               picture->data[1][y * picture->linesize[1] + x] = 128 + y + i * 2;
    
               picture->data[2][y * picture->linesize[2] + x] = 64 + x + i * 5;
    
           }
    
       }
    

    
       /* encode the image */
    
       out_size = avcodec_encode_video(c, outbuf, outbuf_size, picture);
    
       printf("encoding frame %3d (size=%5d)\n", i, out_size);
    
       fwrite(outbuf, 1, out_size, f);
    
   }
    

    
   /* get the delayed frames */
    
   for(; out_size; i++) {
    
       fflush(stdout);
    

    
       out_size = avcodec_encode_video(c, outbuf, outbuf_size, NULL);
    
       printf("write frame %3d (size=%5d)\n", i, out_size);
    
       fwrite(outbuf, 1, out_size, f);
    
   }
    

    
   /* add sequence end code to have a real mpeg file */
    
   outbuf[0] = 0x00;
    
   outbuf[1] = 0x00;
    
   outbuf[2] = 0x01;
    
   outbuf[3] = 0xb7;
    
   fwrite(outbuf, 1, 4, f);
    
   fclose(f);
    
   free(outbuf);
    

    
   avcodec_close(c);
    
   av_free(c);
    
   av_free(picture->data[0]);
    
   av_free(picture);
    
   printf("\n");
    
}
    

    
int main(int argc, char **argv)
    
{
    
   const char *filename;
    

    
   /* register all the codecs */
    
   avcodec_register_all();
    

    
   if (argc <= 1) {
    

    
       video_encode_example("/grb_1.mpg", CODEC_ID_MPEG1VIDEO);
    
   } else {
    
       filename = argv[1];
    
   }
    

    

    
   return 0;
    
}

    When I run gcc videofecencoder.cc -lavcodec I get the following error messages :

    /tmp/ccJg8IDy.o: In function `video_encode_example(char const*, int)':
    
videofecencoder.cc:(.text+0x35): undefined reference to `avcodec_find_encoder(CodecID)'
    
videofecencoder.cc:(.text+0x74): undefined reference to `avcodec_alloc_context3(AVCodec*)'
    
videofecencoder.cc:(.text+0x7d): undefined reference to `avcodec_alloc_frame()'
    
videofecencoder.cc:(.text+0x113): undefined reference to `av_opt_set(void*, char const*, char const*, int)'
    
videofecencoder.cc:(.text+0x12b): undefined reference to `avcodec_open2(AVCodecContext*, AVCodec*, AVDictionary**)'
    
videofecencoder.cc:(.text+0x1f0): undefined reference to `av_image_alloc(unsigned char**, int*, int, int, PixelFormat, int)'
    
videofecencoder.cc:(.text+0x35c): undefined reference to `avcodec_encode_video(AVCodecContext*, unsigned char*, int, AVFrame const*)'
    
videofecencoder.cc:(.text+0x3cf): undefined reference to `avcodec_encode_video(AVCodecContext*, unsigned char*, int, AVFrame const*)'
    
videofecencoder.cc:(.text+0x47c): undefined reference to `avcodec_close(AVCodecContext*)'
    
videofecencoder.cc:(.text+0x488): undefined reference to `av_free(void*)'
    
videofecencoder.cc:(.text+0x497): undefined reference to `av_free(void*)'
    
videofecencoder.cc:(.text+0x4a3): undefined reference to `av_free(void*)'
    
/tmp/ccJg8IDy.o: In function `main':
    
videofecencoder.cc:(.text+0x4c3): undefined reference to `avcodec_register_all()'
    
collect2: ld returnerade avslutningsstatus 1

    The command nm libavcodec.a | grep avcodec_find results in :

    00000000000008e0 T avcodec_find_best_pix_fmt
    
0000000000000740 T avcodec_find_best_pix_fmt2
    
                 U avcodec_find_encoder
    
0000000000002ca0 T avcodec_find_decoder
    
0000000000002cf0 T avcodec_find_decoder_by_name
    
0000000000002bd0 T avcodec_find_encoder
    
0000000000002c30 T avcodec_find_encoder_by_name

    I also have another similar error with another library :
    Undefined reference despite linking in OpenFEC-library

    My system : Ubuntu 11, 64-bits machine

    My next step is to try to compile it on VirtualBox with Ubuntu 32 bits (running on a Windows-OS).

  • dsputil : Split off IDCT bits into their own context

    24 janvier 2014, par Diego Biurrun
    dsputil : Split off IDCT bits into their own context
    • [DH] configure
    • [DH] doc/optimization.txt
    • [DH] libavcodec/Makefile
    • [DH] libavcodec/aic.c
    • [DH] libavcodec/arm/Makefile
    • [DH] libavcodec/arm/dsputil_arm.h
    • [DH] libavcodec/arm/dsputil_armv6.S
    • [DH] libavcodec/arm/dsputil_init_arm.c
    • [DH] libavcodec/arm/dsputil_init_armv6.c
    • [DH] libavcodec/arm/idctdsp_arm.S
    • [DH] libavcodec/arm/idctdsp_arm.h
    • [DH] libavcodec/arm/idctdsp_armv6.S
    • [DH] libavcodec/arm/idctdsp_init_arm.c
    • [DH] libavcodec/arm/idctdsp_init_armv5te.c
    • [DH] libavcodec/arm/idctdsp_init_armv6.c
    • [DH] libavcodec/arm/idctdsp_init_neon.c
    • [DH] libavcodec/arm/idctdsp_neon.S
    • [DH] libavcodec/asv.c
    • [DH] libavcodec/asv.h
    • [DH] libavcodec/asvdec.c
    • [DH] libavcodec/asvenc.c
    • [DH] libavcodec/cavs.c
    • [DH] libavcodec/cavs.h
    • [DH] libavcodec/cavsdsp.c
    • [DH] libavcodec/dnxhddec.c
    • [DH] libavcodec/dnxhdenc.c
    • [DH] libavcodec/dsputil.c
    • [DH] libavcodec/dsputil.h
    • [DH] libavcodec/dvdec.c
    • [DH] libavcodec/dxva2_mpeg2.c
    • [DH] libavcodec/eamad.c
    • [DH] libavcodec/eatgq.c
    • [DH] libavcodec/eatqi.c
    • [DH] libavcodec/g2meet.c
    • [DH] libavcodec/h263.c
    • [DH] libavcodec/idctdsp.c
    • [DH] libavcodec/idctdsp.h
    • [DH] libavcodec/intrax8.c
    • [DH] libavcodec/ljpegenc.c
    • [DH] libavcodec/mdec.c
    • [DH] libavcodec/mimic.c
    • [DH] libavcodec/mjpegdec.c
    • [DH] libavcodec/mjpegdec.h
    • [DH] libavcodec/mjpegenc_common.c
    • [DH] libavcodec/mjpegenc_common.h
    • [DH] libavcodec/mpeg12dec.c
    • [DH] libavcodec/mpeg4videodec.c
    • [DH] libavcodec/mpeg4videoenc.c
    • [DH] libavcodec/mpegvideo.c
    • [DH] libavcodec/mpegvideo.h
    • [DH] libavcodec/mpegvideo_enc.c
    • [DH] libavcodec/mpegvideo_xvmc.c
    • [DH] libavcodec/msmpeg4.c
    • [DH] libavcodec/nuv.c
    • [DH] libavcodec/ppc/Makefile
    • [DH] libavcodec/ppc/dsputil_altivec.h
    • [DH] libavcodec/ppc/dsputil_ppc.c
    • [DH] libavcodec/ppc/idctdsp.c
    • [DH] libavcodec/proresdec.c
    • [DH] libavcodec/proresdsp.c
    • [DH] libavcodec/rtjpeg.c
    • [DH] libavcodec/rtjpeg.h
    • [DH] libavcodec/vc1dec.c
    • [DH] libavcodec/wmv2.c
    • [DH] libavcodec/wmv2dsp.c
    • [DH] libavcodec/x86/Makefile
    • [DH] libavcodec/x86/cavsdsp.c
    • [DH] libavcodec/x86/dsputil_init.c
    • [DH] libavcodec/x86/dsputil_mmx.c
    • [DH] libavcodec/x86/dsputil_x86.h
    • [DH] libavcodec/x86/idct_mmx_xvid.c
    • [DH] libavcodec/x86/idct_sse2_xvid.c
    • [DH] libavcodec/x86/idctdsp.h
    • [DH] libavcodec/x86/idctdsp_init.c
    • [DH] libavcodec/x86/idctdsp_mmx.c
    • [DH] libavcodec/x86/mpegvideoenc_template.c
    • [DH] libavcodec/x86/proresdsp_init.c
    • [DH] libavcodec/x86/simple_idct.c

  • dsputil : Split off IDCT bits into their own context

    24 janvier 2014, par Diego Biurrun
    dsputil : Split off IDCT bits into their own context
    • [DBH] configure
    • [DBH] doc/optimization.txt
    • [DBH] libavcodec/Makefile
    • [DBH] libavcodec/aic.c
    • [DBH] libavcodec/arm/Makefile
    • [DBH] libavcodec/arm/dsputil_arm.h
    • [DBH] libavcodec/arm/dsputil_armv6.S
    • [DBH] libavcodec/arm/dsputil_init_arm.c
    • [DBH] libavcodec/arm/dsputil_init_armv6.c
    • [DBH] libavcodec/arm/idctdsp_arm.S
    • [DBH] libavcodec/arm/idctdsp_arm.h
    • [DBH] libavcodec/arm/idctdsp_armv6.S
    • [DBH] libavcodec/arm/idctdsp_init_arm.c
    • [DBH] libavcodec/arm/idctdsp_init_armv5te.c
    • [DBH] libavcodec/arm/idctdsp_init_armv6.c
    • [DBH] libavcodec/arm/idctdsp_init_neon.c
    • [DBH] libavcodec/arm/idctdsp_neon.S
    • [DBH] libavcodec/asv.c
    • [DBH] libavcodec/asv.h
    • [DBH] libavcodec/asvdec.c
    • [DBH] libavcodec/asvenc.c
    • [DBH] libavcodec/cavs.c
    • [DBH] libavcodec/cavs.h
    • [DBH] libavcodec/cavsdsp.c
    • [DBH] libavcodec/dnxhddec.c
    • [DBH] libavcodec/dnxhdenc.c
    • [DBH] libavcodec/dsputil.c
    • [DBH] libavcodec/dsputil.h
    • [DBH] libavcodec/dvdec.c
    • [DBH] libavcodec/dxva2_mpeg2.c
    • [DBH] libavcodec/eamad.c
    • [DBH] libavcodec/eatgq.c
    • [DBH] libavcodec/eatqi.c
    • [DBH] libavcodec/g2meet.c
    • [DBH] libavcodec/h263.c
    • [DBH] libavcodec/idctdsp.c
    • [DBH] libavcodec/idctdsp.h
    • [DBH] libavcodec/intrax8.c
    • [DBH] libavcodec/ljpegenc.c
    • [DBH] libavcodec/mdec.c
    • [DBH] libavcodec/mimic.c
    • [DBH] libavcodec/mjpegdec.c
    • [DBH] libavcodec/mjpegdec.h
    • [DBH] libavcodec/mjpegenc_common.c
    • [DBH] libavcodec/mjpegenc_common.h
    • [DBH] libavcodec/mpeg12dec.c
    • [DBH] libavcodec/mpeg4videodec.c
    • [DBH] libavcodec/mpeg4videoenc.c
    • [DBH] libavcodec/mpegvideo.c
    • [DBH] libavcodec/mpegvideo.h
    • [DBH] libavcodec/mpegvideo_enc.c
    • [DBH] libavcodec/mpegvideo_xvmc.c
    • [DBH] libavcodec/msmpeg4.c
    • [DBH] libavcodec/nuv.c
    • [DBH] libavcodec/ppc/Makefile
    • [DBH] libavcodec/ppc/dsputil_altivec.h
    • [DBH] libavcodec/ppc/dsputil_ppc.c
    • [DBH] libavcodec/ppc/idctdsp.c
    • [DBH] libavcodec/proresdec.c
    • [DBH] libavcodec/proresdsp.c
    • [DBH] libavcodec/rtjpeg.c
    • [DBH] libavcodec/rtjpeg.h
    • [DBH] libavcodec/vc1dec.c
    • [DBH] libavcodec/wmv2.c
    • [DBH] libavcodec/wmv2dsp.c
    • [DBH] libavcodec/x86/Makefile
    • [DBH] libavcodec/x86/cavsdsp.c
    • [DBH] libavcodec/x86/dsputil_init.c
    • [DBH] libavcodec/x86/dsputil_mmx.c
    • [DBH] libavcodec/x86/dsputil_x86.h
    • [DBH] libavcodec/x86/idct_mmx_xvid.c
    • [DBH] libavcodec/x86/idct_sse2_xvid.c
    • [DBH] libavcodec/x86/idctdsp.h
    • [DBH] libavcodec/x86/idctdsp_init.c
    • [DBH] libavcodec/x86/idctdsp_mmx.c
    • [DBH] libavcodec/x86/mpegvideoenc_template.c
    • [DBH] libavcodec/x86/proresdsp_init.c
    • [DBH] libavcodec/x86/simple_idct.c

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