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Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang 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. -
Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
L’agrémenter visuellement
10 avril 2011MediaSPIP est basé sur un système de thèmes et de squelettes. Les squelettes définissent le placement des informations dans la page, définissant un usage spécifique de la plateforme, et les thèmes l’habillage graphique général.
Chacun peut proposer un nouveau thème graphique ou un squelette et le mettre à disposition de la communauté.
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Data Privacy Day 2020
27 janvier 2020, par Matthieu Aubry — Privacy -
Updating SDL yuv Texture
15 juin 2015, par madprogrammer2015I am receiving an H.264 video stream and successfully decoding it with FFMPEG. It can display the first frame of data but then after that the screen never updates. It just appears to become a static image. I am using YUV pixel format, and I am receiving it in that format as well. Also I am using SDL_UpdateYUVTexture().
Here is my code :
int main()
{
WORD wVersionRequested;
WSADATA wsaData;
int wsaerr;
if (SDL_Init(SDL_INIT_EVERYTHING)) {
fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
exit(1);
}
// Using MAKEWORD macro, Winsock version request 2.2
wVersionRequested = MAKEWORD(2, 2);
wsaerr = WSAStartup(wVersionRequested, &wsaData);
if (wsaerr != 0)
{
/* Tell the user that we could not find a usable */
/* WinSock DLL.*/
printf("The Winsock dll not found!\n");
return 0;
}
else
{
printf("The Winsock dll found!\n");
printf("The status: %s.\n", wsaData.szSystemStatus);
}
/* Confirm that the WinSock DLL supports 2.2.*/
/* Note that if the DLL supports versions greater */
/* than 2.2 in addition to 2.2, it will still return */
/* 2.2 in wVersion since that is the version we */
/* requested. */
if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2)
{
/* Tell the user that we could not find a usable */
/* WinSock DLL.*/
printf("The dll do not support the Winsock version %u.%u!\n", LOBYTE(wsaData.wVersion), HIBYTE(wsaData.wVersion));
WSACleanup();
return 0;
}
else
{
printf("The dll supports the Winsock version %u.%u!\n", LOBYTE(wsaData.wVersion), HIBYTE(wsaData.wVersion));
printf("The highest version this dll can support: %u.%u\n", LOBYTE(wsaData.wHighVersion), HIBYTE(wsaData.wHighVersion));
}
ULONG localif;
/*INT Ret;
HANDLE ThreadHandle;
DWORD ThreadId;
WSAEVENT AcceptEvent;
char buf[1024];
int buflen = 1024, rc, err;*/
SOCKET s;
SOCKET ns;
SOCKADDR_IN multi, safrom;
int fromlen;
int totalSize = 0;
AVCodec *codec;
AVCodecContext *codecContext;
int frame;
int got_picture;
AVFrame *picture;
AVPacket packet;
SwsContext* convertContext;
uint16_t i = 1;
//std::queue<madproto> queue;
//std::list<madproto> list;
AVCodecParserContext *parser;
std::vector buffer;
//moodycamel::ConcurrentQueue<madproto> protoQueue;
SDL_Window *window;
SDL_Renderer *renderer;
SDL_Texture *bmp;
SDL_Rect rect;
file.open("log.txt");
s = socket(AF_INET, SOCK_STREAM, IPPROTO_RM);
multi.sin_family = AF_INET;
multi.sin_port = htons(5150);
multi.sin_addr.s_addr = inet_addr("234.5.6.7");
int bindResult = bind(s, (PSOCKADDR)&multi, sizeof(multi));
if (bindResult < 0)
{
std::cout << "bindResult: " << WSAGetLastError() << std::endl;
}
listen(s, 10);
//if ((AcceptEvent = WSACreateEvent()) == WSA_INVALID_EVENT)
//{
// printf("WSACreateEvent() failed with error %d\n", WSAGetLastError());
// return 1;
//}
//else
// printf("WSACreateEvent() is OK!\n");
//// Create a worker thread to service completed I/O requests
//if ((ThreadHandle = CreateThread(NULL, 0, WorkerThread, (LPVOID)AcceptEvent, 0, &ThreadId)) == NULL)
//{
// printf("CreateThread() failed with error %d\n", GetLastError());
// return 1;
//}
//else
// printf("CreateThread() should be fine!\n");
localif = inet_addr("192.168.1.2");
setsockopt(s, IPPROTO_RM, RM_ADD_RECEIVE_IF, (char *)&localif, sizeof(localif));
fromlen = sizeof(safrom);
ns = accept(s, (SOCKADDR *)&safrom, &fromlen);
closesocket(s); // Don't need to listen anymore
std::string received;
av_register_all();
int horizontal = 0;
int vertical = 0;
GetDesktopResolution(horizontal, vertical);
codec = avcodec_find_decoder(CODEC_ID_H264);
if (!codec) {
std::cout << "codec not found" << std::endl;
std::cin.get();
}
codecContext = avcodec_alloc_context3(codec);
/*if (codec->capabilities & CODEC_CAP_TRUNCATED)
codecContext->flags |= CODEC_FLAG_TRUNCATED;*/
//codecContext->flags |= CODEC_FLAG_LOW_DELAY;
codecContext->flags2 |= CODEC_FLAG2_CHUNKS;
codecContext->width = horizontal;
codecContext->height = vertical;
codecContext->codec_id = CODEC_ID_H264;
codecContext->codec_type = AVMEDIA_TYPE_VIDEO;
codecContext->pix_fmt = PIX_FMT_YUV420P;
codecContext->thread_type = 0;
if (avcodec_open2(codecContext, codec, NULL) < 0) {
std::cout << "could not open codec" << std::endl;
std::cin.get();
}
convertContext = sws_getContext(
codecContext->width,
codecContext->height,
PIX_FMT_RGB32,
codecContext->width,
codecContext->height,
PIX_FMT_YUV420P,
SWS_BICUBIC,
NULL,
NULL,
NULL
);
parser = av_parser_init(CODEC_ID_H264);
picture = av_frame_alloc();
if (ns == INVALID_SOCKET)
{
std::cout << "accept didn't work!" << std::endl;
std::cin.get();
}
/*if (WSASetEvent(AcceptEvent) == FALSE)
{
printf("WSASetEvent() failed with error %d\n", WSAGetLastError());
return 1;
}
else
printf("WSASetEvent() should be working!\n");*/
window = SDL_CreateWindow("YUV", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, codecContext->width, codecContext->height, SDL_WINDOW_SHOWN);
renderer = SDL_CreateRenderer(window, -1, 0);
bmp = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_IYUV, SDL_TEXTUREACCESS_STREAMING, codecContext->width, codecContext->height);
//receive = SDL_CreateThread(receiveThread, "ReceiveThread", (void *)NULL);
bool quit = false;
rect.x = 0;
rect.y = 0;
rect.w = codecContext->width;
rect.h = codecContext->height;
while (!quit)
{
while (true)
{
MadProto proto;
int result = recvfrom(ns, (char *)&proto, sizeof(MadProto), 0, (struct sockaddr *)&multi, &fromlen);
if (result < 0)
{
std::cout << "receive failed! error: " << WSAGetLastError() << std::endl;
break;
}
else
{
std::cout << "receive successful, received " << result << " bytes" << std::endl;
if (ntohs(proto.frame_end) == 1)
{
uint8_t *outbuffer = NULL;
int outBufSize = 0;
int rc = av_parser_parse2(parser, codecContext, &outbuffer, &outBufSize, buffer.data(), buffer.size(), 0, 0, 0);
if (outBufSize <= 0)
{
std::cout << "parsing failed!" << std::endl;
std::cout << "outBufSize: " << outBufSize << std::endl;
break;
}
if (rc)
{
std::cout << "rc: " << rc << std::endl;
std::cout << "parsing successful!" << std::endl;
//std::cin.get();
av_init_packet(&packet);
packet.size = outBufSize;
packet.data = outbuffer;
frame = avcodec_decode_video2(codecContext, picture, &got_picture, &packet);
if (frame < 0)
{
std::cout << "decoding was unsuccessful!" << std::endl;
break;
}
if (got_picture)
{
std::cout << "decoding was successful!" << std::endl;
std::cout << "decoded length was: " << frame << std::endl;
buffer.empty();
//std::cin.get();
int code = SDL_UpdateYUVTexture(bmp, NULL, picture->data[0], picture->linesize[0],
picture->data[1], picture->linesize[1],
picture->data[2], picture->linesize[2]);
if (code < 0)
{
std::cout << "unable to update texture " << SDL_GetError() << std::endl;
std::cin.get();
}
code = SDL_RenderClear(renderer);
if (code < 0)
{
std::cout << "renderer clear failed " << SDL_GetError() << std::endl;
std::cin.get();
}
code = SDL_RenderCopy(renderer, bmp, NULL, &rect);
if (code < 0)
{
std::cout << "renderer copy failed " << SDL_GetError() << std::endl;
std::cin.get();
}
SDL_RenderPresent(renderer);
SDL_Delay(40);
}
av_free_packet(&packet);
}
}
else
{
std::copy(proto.payload, proto.payload + ntohs(proto.nal_length), std::back_inserter(buffer));
std::cout << "frame is continuing!" << std::endl;
//queue.push(proto);
//list.push_front(proto);
}
}
}
SDL_WaitEvent(&event);
switch (event.type)
{
case SDL_QUIT:
quit = true;
break;
}
}
std::cout << "closing everything!" << std::endl;
av_frame_free(&picture);
closesocket(ns);
fclose(f);
std::cin.get();
return 0;
}
</madproto></madproto></madproto> -
Revision 33976 : bugs html
27 décembre 2009, par cedric@… — Logbugs html