Recherche avancée
Médias (91)
-
Géodiversité
9 septembre 2011, par ,
Mis à jour : Août 2018
Langue : français
Type : Texte
-
USGS Real-time Earthquakes
8 septembre 2011, par
Mis à jour : Septembre 2011
Langue : français
Type : Texte
-
SWFUpload Process
6 septembre 2011, par
Mis à jour : Septembre 2011
Langue : français
Type : Texte
-
La conservation du net art au musée. Les stratégies à l’œuvre
26 mai 2011
Mis à jour : Juillet 2013
Langue : français
Type : Texte
-
Podcasting Legal guide
16 mai 2011, par
Mis à jour : Mai 2011
Langue : English
Type : Texte
-
Creativecommons informational flyer
16 mai 2011, par
Mis à jour : Juillet 2013
Langue : English
Type : Texte
Autres articles (105)
-
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...) -
Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs
12 avril 2011, parLa manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras. -
Gestion de la ferme
2 mars 2010, parLa ferme est gérée dans son ensemble par des "super admins".
Certains réglages peuvent être fais afin de réguler les besoins des différents canaux.
Dans un premier temps il utilise le plugin "Gestion de mutualisation"
Sur d’autres sites (11513)
-
Packet (AV_PIX_FMT_UYVY422) to Planar (AV_PIX_FMT_YUVJ422P) format conversion
25 août 2017, par user3743908My image format is "YUV422_8_UYVY" which is packed AV_PIX_FMT_UYVY422 format, i am trying to convert it in Planar "AV_PIX_FMT_YUVJ422P", but not able to succeed yet, below is the code on which i am working.
error message : [swscaler @ 004b3fa0] deprecetd pixel format used, make sure you did set range correctly
resultant image (file ) having 0 k size
what would be the last argument of av_image_alloc() for conversion like 16,32 etc
my aim to convert packet yuv image in planar yuv format
static AVCodecContext *pCodecCtx;
static AVFormatContext *pFormatCtx;
static AVCodec *pCodec;
static AVOutputFormat* fmt;
static AVFrame *RawPic;
static AVFrame *ScalePic;
static AVPacket pkt;
static AVStream* video_st;
static FILE *file;
static struct SwsContext *sws_ctx;
enum AVPixelFormat src_pix_fmt = AV_PIX_FMT_UYVY422;
enum AVPixelFormat dst_pix_fmt = AV_PIX_FMT_YUVJ422P;
int main( ) {
FILE *in_file = NULL; //packed Source
FILE *out_file = NULL; //planar output
int in_width = 2448; //YUV's width
int in_height = 2050; //YUV's heigh
int out_width = 2448; //YUV's width
int out_height = 2050; //YUV's heigh
unsigned long int ret;
in_file = fopen("c:\\yuv422_8_uyvy.yuv","rb"); //Source Input File
if(in_file == NULL) { printf("\n\tinput File Opening error...!!"); exit(1); }
out_file = fopen("d:\\test_Planar.yuv", "wb"); //Source Input File
if(out_file == NULL) { printf("\n\toutput File Opening error...!!"); exit(1); }
else { printf("\n\tOutput File Created...!!"); }
//------Loads the whole database of available codecs and formats------
av_register_all();
printf("\t\n\tCodac database Loaded...\n");
//------Contex Variable assignment--------------------------------
pFormatCtx = avformat_alloc_context();
fmt = NULL;
fmt = av_guess_format("mjpeg",NULL,NULL);
pFormatCtx->oformat = fmt;
video_st = avformat_new_stream(pFormatCtx, 0); if (video_st==NULL) return -1;
pCodecCtx = video_st->codec;
pCodecCtx->codec_id = fmt->video_codec;
pCodecCtx->codec_type = AVMEDIA_TYPE_VIDEO;
pCodecCtx->pix_fmt = src_pix_fmt;
printf("\t\n\tContex Variable assigned...\n");
//------Allocate Source Image Buffer--------------------------------
AVFrame *RawPic = av_frame_alloc();
if(!RawPic) { printf("\nCould not allocate Raw Image frame\n"); exit(1);}
RawPic->format = pCodecCtx->pix_fmt;
RawPic->width = in_width;
RawPic->height = in_height;
ret = av_image_alloc(RawPic->data,RawPic->linesize,in_width,in_height,src_pix_fmt, 16);
if(ret < 0) { printf("\nCould not allocate raw picture buffer\n"); exit(1);}
printf("\n\tAllocate Source Image Buffer");
//------Allocate Desitnation Image Buffer-------------------
AVFrame *ScalePic = av_frame_alloc();
if(!ScalePic) { printf("\nCould not allocate Scale Image frame\n"); exit(1);}
ScalePic->format = pCodecCtx->pix_fmt;
ScalePic->width = out_width;
ScalePic->height = out_height;
ret = av_image_alloc(ScalePic->data,ScalePic->linesize,out_width,out_height,dst_pix_fmt, 32);
if(ret < 0) { printf("\nCould not allocate Scale picture buffer\n"); exit(1);}
dst_bufsize = ret;
printf("\n\tAllocate Destination Image Buffer");
//------Create scaling context------------------------------sws_getContex
printf("\t\n\tCreating Scaling context..[sws_getContext]\n");
sws_ctx = sws_getContext( in_width, in_height, src_pix_fmt,
out_width, out_height, dst_pix_fmt,
SWS_BICUBIC, NULL, NULL, NULL);
if(!sws_ctx) { printf("\nContext Error..\n"); }
printf("\t\n\tScaling context...Created\n");
//------Create scaling context---OR CONVERTED TO DESTINATION FORMAT--
sws_scale(sws_ctx, RawPic->data, RawPic->linesize, 0, in_height, ScalePic->data, ScalePic->linesize);
printf("\t\n\tCreating Scaling context...sws_scale...done\n");
int num_bytes = avpicture_get_size(src_pix_fmt,in_width,in_height);
uint8_t* ScalePic_Buffer = (uint8_t *)av_malloc(num_bytes*sizeof(int8_t));
avpicture_fill((AVPicture*)ScalePic,ScalePic_Buffer,AV_PIX_FMT_YUVJ422P,out_width,out_height);
//-----Write Scale Image to outputfile----------------------------
fwrite(ScalePic->data,1,dst_bufsize,out_file);
//---Release all memory and close file----------------------------------
fclose(in_file);
fclose(out_file);
avcodec_close(pCodecCtx);
av_free(pCodecCtx);
av_freep(&RawPic->data[0]);
av_frame_free(&RawPic);
av_freep(&ScalePic->data[0]);
av_frame_free(&ScalePic);
av_frame_free(&RawPic);
printf("\n\n");
system("PAUSE");
exit(1);
} -
swscale/aarch64/output.S : refactor ff_yuv2plane1_8_neon
31 janvier, par Krzysztof Pyrkoszswscale/aarch64/output.S : refactor ff_yuv2plane1_8_neon
The benchmarks (before vs after) were gathered using
./tests/checkasm/checkasm —test=sw_scale —bench —runs=6 | grep yuv2yuv1A78 before :
yuv2yuv1_0_512_accurate_c : 2039.5 ( 1.00x)
yuv2yuv1_0_512_accurate_neon : 385.5 ( 5.29x)
yuv2yuv1_0_512_approximate_c : 2110.5 ( 1.00x)
yuv2yuv1_0_512_approximate_neon : 385.5 ( 5.47x)
yuv2yuv1_3_512_accurate_c : 2061.2 ( 1.00x)
yuv2yuv1_3_512_accurate_neon : 381.2 ( 5.41x)
yuv2yuv1_3_512_approximate_c : 2099.2 ( 1.00x)
yuv2yuv1_3_512_approximate_neon : 381.2 ( 5.51x)
yuv2yuv1_8_512_accurate_c : 2054.2 ( 1.00x)
yuv2yuv1_8_512_accurate_neon : 385.5 ( 5.33x)
yuv2yuv1_8_512_approximate_c : 2112.2 ( 1.00x)
yuv2yuv1_8_512_approximate_neon : 385.5 ( 5.48x)
yuv2yuv1_11_512_accurate_c : 2036.0 ( 1.00x)
yuv2yuv1_11_512_accurate_neon : 381.2 ( 5.34x)
yuv2yuv1_11_512_approximate_c : 2115.0 ( 1.00x)
yuv2yuv1_11_512_approximate_neon : 381.2 ( 5.55x)
yuv2yuv1_16_512_accurate_c : 2066.5 ( 1.00x)
yuv2yuv1_16_512_accurate_neon : 385.5 ( 5.36x)
yuv2yuv1_16_512_approximate_c : 2100.8 ( 1.00x)
yuv2yuv1_16_512_approximate_neon : 385.5 ( 5.45x)
yuv2yuv1_19_512_accurate_c : 2059.8 ( 1.00x)
yuv2yuv1_19_512_accurate_neon : 381.2 ( 5.40x)
yuv2yuv1_19_512_approximate_c : 2102.8 ( 1.00x)
yuv2yuv1_19_512_approximate_neon : 381.2 ( 5.52x)After :
yuv2yuv1_0_512_accurate_c : 2206.0 ( 1.00x)
yuv2yuv1_0_512_accurate_neon : 139.2 (15.84x)
yuv2yuv1_0_512_approximate_c : 2050.0 ( 1.00x)
yuv2yuv1_0_512_approximate_neon : 139.2 (14.72x)
yuv2yuv1_3_512_accurate_c : 2205.2 ( 1.00x)
yuv2yuv1_3_512_accurate_neon : 138.0 (15.98x)
yuv2yuv1_3_512_approximate_c : 2052.5 ( 1.00x)
yuv2yuv1_3_512_approximate_neon : 138.0 (14.87x)
yuv2yuv1_8_512_accurate_c : 2171.0 ( 1.00x)
yuv2yuv1_8_512_accurate_neon : 139.2 (15.59x)
yuv2yuv1_8_512_approximate_c : 2064.2 ( 1.00x)
yuv2yuv1_8_512_approximate_neon : 139.2 (14.82x)
yuv2yuv1_11_512_accurate_c : 2164.8 ( 1.00x)
yuv2yuv1_11_512_accurate_neon : 138.0 (15.69x)
yuv2yuv1_11_512_approximate_c : 2048.8 ( 1.00x)
yuv2yuv1_11_512_approximate_neon : 138.0 (14.85x)
yuv2yuv1_16_512_accurate_c : 2154.5 ( 1.00x)
yuv2yuv1_16_512_accurate_neon : 139.2 (15.47x)
yuv2yuv1_16_512_approximate_c : 2047.2 ( 1.00x)
yuv2yuv1_16_512_approximate_neon : 139.2 (14.70x)
yuv2yuv1_19_512_accurate_c : 2144.5 ( 1.00x)
yuv2yuv1_19_512_accurate_neon : 138.0 (15.54x)
yuv2yuv1_19_512_approximate_c : 2046.0 ( 1.00x)
yuv2yuv1_19_512_approximate_neon : 138.0 (14.83x)A72 before :
yuv2yuv1_0_512_accurate_c : 3779.8 ( 1.00x)
yuv2yuv1_0_512_accurate_neon : 527.8 ( 7.16x)
yuv2yuv1_0_512_approximate_c : 4128.2 ( 1.00x)
yuv2yuv1_0_512_approximate_neon : 528.2 ( 7.81x)
yuv2yuv1_3_512_accurate_c : 3836.2 ( 1.00x)
yuv2yuv1_3_512_accurate_neon : 527.0 ( 7.28x)
yuv2yuv1_3_512_approximate_c : 3991.0 ( 1.00x)
yuv2yuv1_3_512_approximate_neon : 526.8 ( 7.58x)
yuv2yuv1_8_512_accurate_c : 3732.8 ( 1.00x)
yuv2yuv1_8_512_accurate_neon : 525.5 ( 7.10x)
yuv2yuv1_8_512_approximate_c : 4060.0 ( 1.00x)
yuv2yuv1_8_512_approximate_neon : 527.0 ( 7.70x)
yuv2yuv1_11_512_accurate_c : 3836.2 ( 1.00x)
yuv2yuv1_11_512_accurate_neon : 530.0 ( 7.24x)
yuv2yuv1_11_512_approximate_c : 4014.0 ( 1.00x)
yuv2yuv1_11_512_approximate_neon : 530.0 ( 7.57x)
yuv2yuv1_16_512_accurate_c : 3726.2 ( 1.00x)
yuv2yuv1_16_512_accurate_neon : 525.5 ( 7.09x)
yuv2yuv1_16_512_approximate_c : 4114.2 ( 1.00x)
yuv2yuv1_16_512_approximate_neon : 526.2 ( 7.82x)
yuv2yuv1_19_512_accurate_c : 3812.2 ( 1.00x)
yuv2yuv1_19_512_accurate_neon : 530.0 ( 7.19x)
yuv2yuv1_19_512_approximate_c : 4012.2 ( 1.00x)
yuv2yuv1_19_512_approximate_neon : 530.0 ( 7.57x)After :
yuv2yuv1_0_512_accurate_c : 3716.8 ( 1.00x)
yuv2yuv1_0_512_accurate_neon : 215.1 (17.28x)
yuv2yuv1_0_512_approximate_c : 3877.8 ( 1.00x)
yuv2yuv1_0_512_approximate_neon : 222.8 (17.40x)
yuv2yuv1_3_512_accurate_c : 3717.1 ( 1.00x)
yuv2yuv1_3_512_accurate_neon : 217.8 (17.06x)
yuv2yuv1_3_512_approximate_c : 3801.6 ( 1.00x)
yuv2yuv1_3_512_approximate_neon : 220.3 (17.25x)
yuv2yuv1_8_512_accurate_c : 3716.6 ( 1.00x)
yuv2yuv1_8_512_accurate_neon : 213.8 (17.38x)
yuv2yuv1_8_512_approximate_c : 3831.8 ( 1.00x)
yuv2yuv1_8_512_approximate_neon : 218.1 (17.57x)
yuv2yuv1_11_512_accurate_c : 3717.1 ( 1.00x)
yuv2yuv1_11_512_accurate_neon : 219.1 (16.97x)
yuv2yuv1_11_512_approximate_c : 3801.6 ( 1.00x)
yuv2yuv1_11_512_approximate_neon : 216.1 (17.59x)
yuv2yuv1_16_512_accurate_c : 3716.6 ( 1.00x)
yuv2yuv1_16_512_accurate_neon : 213.6 (17.40x)
yuv2yuv1_16_512_approximate_c : 3831.6 ( 1.00x)
yuv2yuv1_16_512_approximate_neon : 215.1 (17.82x)
yuv2yuv1_19_512_accurate_c : 3717.1 ( 1.00x)
yuv2yuv1_19_512_accurate_neon : 223.8 (16.61x)
yuv2yuv1_19_512_approximate_c : 3801.6 ( 1.00x)
yuv2yuv1_19_512_approximate_neon : 219.1 (17.35x)x13s before :
yuv2yuv1_0_512_accurate_c : 1435.1 ( 1.00x)
yuv2yuv1_0_512_accurate_neon : 221.1 ( 6.49x)
yuv2yuv1_0_512_approximate_c : 1405.4 ( 1.00x)
yuv2yuv1_0_512_approximate_neon : 219.1 ( 6.41x)
yuv2yuv1_3_512_accurate_c : 1418.6 ( 1.00x)
yuv2yuv1_3_512_accurate_neon : 215.9 ( 6.57x)
yuv2yuv1_3_512_approximate_c : 1405.9 ( 1.00x)
yuv2yuv1_3_512_approximate_neon : 224.1 ( 6.27x)
yuv2yuv1_8_512_accurate_c : 1433.9 ( 1.00x)
yuv2yuv1_8_512_accurate_neon : 218.6 ( 6.56x)
yuv2yuv1_8_512_approximate_c : 1412.9 ( 1.00x)
yuv2yuv1_8_512_approximate_neon : 218.9 ( 6.46x)
yuv2yuv1_11_512_accurate_c : 1449.1 ( 1.00x)
yuv2yuv1_11_512_accurate_neon : 217.6 ( 6.66x)
yuv2yuv1_11_512_approximate_c : 1410.9 ( 1.00x)
yuv2yuv1_11_512_approximate_neon : 221.1 ( 6.38x)
yuv2yuv1_16_512_accurate_c : 1402.1 ( 1.00x)
yuv2yuv1_16_512_accurate_neon : 214.6 ( 6.53x)
yuv2yuv1_16_512_approximate_c : 1422.4 ( 1.00x)
yuv2yuv1_16_512_approximate_neon : 222.9 ( 6.38x)
yuv2yuv1_19_512_accurate_c : 1421.6 ( 1.00x)
yuv2yuv1_19_512_accurate_neon : 217.4 ( 6.54x)
yuv2yuv1_19_512_approximate_c : 1421.6 ( 1.00x)
yuv2yuv1_19_512_approximate_neon : 221.4 ( 6.42x)After :
yuv2yuv1_0_512_accurate_c : 1413.6 ( 1.00x)
yuv2yuv1_0_512_accurate_neon : 80.6 (17.53x)
yuv2yuv1_0_512_approximate_c : 1455.6 ( 1.00x)
yuv2yuv1_0_512_approximate_neon : 80.6 (18.05x)
yuv2yuv1_3_512_accurate_c : 1429.1 ( 1.00x)
yuv2yuv1_3_512_accurate_neon : 77.4 (18.47x)
yuv2yuv1_3_512_approximate_c : 1462.6 ( 1.00x)
yuv2yuv1_3_512_approximate_neon : 80.6 (18.14x)
yuv2yuv1_8_512_accurate_c : 1425.4 ( 1.00x)
yuv2yuv1_8_512_accurate_neon : 77.9 (18.30x)
yuv2yuv1_8_512_approximate_c : 1436.6 ( 1.00x)
yuv2yuv1_8_512_approximate_neon : 80.9 (17.76x)
yuv2yuv1_11_512_accurate_c : 1429.4 ( 1.00x)
yuv2yuv1_11_512_accurate_neon : 76.1 (18.78x)
yuv2yuv1_11_512_approximate_c : 1447.1 ( 1.00x)
yuv2yuv1_11_512_approximate_neon : 78.4 (18.46x)
yuv2yuv1_16_512_accurate_c : 1439.9 ( 1.00x)
yuv2yuv1_16_512_accurate_neon : 77.6 (18.55x)
yuv2yuv1_16_512_approximate_c : 1422.1 ( 1.00x)
yuv2yuv1_16_512_approximate_neon : 78.1 (18.20x)
yuv2yuv1_19_512_accurate_c : 1447.1 ( 1.00x)
yuv2yuv1_19_512_accurate_neon : 78.1 (18.52x)
yuv2yuv1_19_512_approximate_c : 1474.4 ( 1.00x)
yuv2yuv1_19_512_approximate_neon : 78.1 (18.87x)Signed-off-by : Martin Storsjö <martin@martin.st>
-
Anomalie #3418 : Les tables des plugins ne s’installent pas
9 mai 2015, par Maïeul RouquetteMa config local
PHP Version 5.2.17
System Darwin FTSR22998 12.6.0 Darwin Kernel Version 12.6.0 : Wed Mar 18 16:23:48 PDT 2015 ; root:xnu-2050.48.19 1/RELEASE_X86_64 x86_64
Build Date Sep 18 2013 13:58:06
Configure Command ’./configure’ ’—with-mysql=/Applications/MAMP/Library’ ’—with-apxs2=/Applications/MAMP/Library/bin/apxs’ ’—with-gd’ ’—with-jpeg-dir=/Applications/MAMP/Library’ ’—with-png-dir=/Applications/MAMP/Library’ ’—with-zlib’ ’—with-freetype-dir=/Applications/MAMP/Library’ ’—prefix=/Applications/MAMP/bin/php/php5.2.17’ ’—exec-prefix=/Applications/MAMP/bin/php/php5.2.17’ ’—sysconfdir=/Applications/MAMP/bin/php/php5.2.17/conf’ ’—with-soap’ ’—with-config-file-path=/Applications/MAMP/bin/php/php5.2.17/conf’ ’—enable-track-vars’ ’—enable-bcmath’ ’—enable-ftp’ ’—enable-gd-native-ttf’ ’—with-bz2=/usr’ ’—with-ldap’ ’—with-mysqli=/Applications/MAMP/Library/bin/mysql_config’ ’—with-sqlite’ ’—with-ttf’ ’—with-t1lib=/Applications/MAMP/Library’ ’—enable-mbstring=all’ ’—with-curl=/Applications/MAMP/Library’ ’—enable-dbx’ ’—enable-sockets’ ’—enable-bcmath’ ’—with-imap=shared,/Applications/MAMP/Library/lib/imap-2007f’ ’—enable-soap’ ’—with-kerberos’ ’—enable-calendar’ ’—with-pgsql=shared,/Applications/MAMP/Library/pg’ ’—enable-dbase’ ’—enable-exif’ ’—with-libxml-dir=/Applications/MAMP/Library’ ’—with-gettext=shared,/Applications/MAMP/Library’ ’—with-xsl=/Applications/MAMP/Library’ ’—with-pdo-mysql=shared,/Applications/MAMP/Library’ ’—with-pdo-pgsql=shared,/Applications/MAMP/Library/pg’ ’—with-mcrypt=shared,/Applications/MAMP/Library’ ’—with-openssl’ ’—enable-zip’ ’—with-iconv=/Applications/MAMP/Library’
Server API Apache 2.0 Handler
Virtual Directory Support disabled
Configuration File (php.ini) Path /Applications/MAMP/bin/php/php5.2.17/conf
Loaded Configuration File /Applications/MAMP/bin/php/php5.2.17/conf/php.ini
Scan this dir for additional .ini files (none)
additional .ini files parsed (none)
PHP API 20041225
PHP Extension 20060613
Zend Extension 220060519
Debug Build no
Thread Safety disabled
Zend Memory Manager enabled
IPv6 Support enabled
Registered PHP Streams https, ftps, compress.zlib, compress.bzip2, php, file, data, http, ftp, zip
Registered Stream Socket Transports tcp, udp, unix, udg, ssl, sslv3, sslv2, tls
Registered Stream Filters zlib.*, bzip2.*, convert.iconv.*, string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumedMon test
1) spip 3.1 svn 22109
2) pas de plugins/auto mais le flux déclaré
3) plugin tickets mis manuellement dans plugins
4) j’active le plugin. Il se "préactive" en entendance les dépendances
5) lorsque j’installe saisies, le plugin tickets peut bien s’activer
6) mais les tables n’ont pas été installées
Syndiquer tout le site
