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Médias (91)
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Head down (wav version)
26 septembre 2011, par
Mis à jour : Avril 2013
Langue : English
Type : Audio
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Echoplex (wav version)
26 septembre 2011, par
Mis à jour : Avril 2013
Langue : English
Type : Audio
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Discipline (wav version)
26 septembre 2011, par
Mis à jour : Avril 2013
Langue : English
Type : Audio
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Letting you (wav version)
26 septembre 2011, par
Mis à jour : Avril 2013
Langue : English
Type : Audio
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1 000 000 (wav version)
26 septembre 2011, par
Mis à jour : Avril 2013
Langue : English
Type : Audio
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999 999 (wav version)
26 septembre 2011, par
Mis à jour : Avril 2013
Langue : English
Type : Audio
Autres articles (80)
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Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
Comme pour la version précédente, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
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XMP PHP
13 mai 2011, parDixit Wikipedia, XMP signifie :
Extensible Metadata Platform ou XMP est un format de métadonnées basé sur XML utilisé dans les applications PDF, de photographie et de graphisme. Il a été lancé par Adobe Systems en avril 2001 en étant intégré à la version 5.0 d’Adobe Acrobat.
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Use, discuss, criticize
13 avril 2011, parTalk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
A discussion list is available for all exchanges between users.
Sur d’autres sites (14054)
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Data Privacy Day 2020
27 janvier 2020, par Matthieu Aubry — Privacy -
Q&A : An interview with Matomo founder, Matthieu Aubry
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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>