OpenCV load image/video from stdin

Question

I am trying to read a jpg image from stdin using the following code:

int c,count=0;
vector buffer; //buffer for coding

/* for stdin, we need to         


        

Answer 1

the following reads a jpeg sequence from stdin frame by frame. examples:

ffmpeg

ffmpeg -i input.mp4 -vcodec mjpeg -f image2pipe -pix_fmt yuvj420p -r 10 -|program.exe

mencoder

mencoder input.mp4 -nosound -ovc lavc -lavcopts vcodec=mjpeg -o -|program.exe

curl

curl "http://10.10.201.241/mjpeg/video.cgi&resolution=320x240"|program.exe

code

#include 
#include 

using namespace cv;

#if defined(_MSC_VER) || defined(WIN32)  || defined(_WIN32) || defined(__WIN32__) \
    || defined(WIN64)    || defined(_WIN64) || defined(__WIN64__)
# include 
# include 
# define SET_BINARY_MODE(handle) setmode(handle, O_BINARY)
#else
# define SET_BINARY_MODE(handle) ((void)0)
#endif

#define BUFSIZE 10240
int main ( int argc, char **argv )
{

    SET_BINARY_MODE(fileno(stdin));
    std::vector data;
    bool skip=true;
    bool imgready=false;
    bool ff=false;
    int readbytes=-1;
    while (1)
    {   
        char ca[BUFSIZE];
        uchar c;
        if (readbytes!=0)
        {
            readbytes=read(fileno(stdin),ca,BUFSIZE);
            for(int i=0;i