Int_t MVideo::CaptureWait	(	unsigned int	frame,
		unsigned char **	ptr = 0
	)		const

Definition at line 782 of file MVideo.cc.

References fBuffers, first, gLog, and Ioctl().

Referenced by Camera::Thread().

{
    frame %= fBuffers.size();

    if (ptr)
        *ptr = NULL;

//    const int SYNC_TIMEOUT = 1;

//#ifdef DEBUG
//    cout << "*** CaptureWait " << frame << endl;
//#endif

    //alarm(SYNC_TIMEOUT);
    const Int_t rc = Ioctl(VIDIOC_DQBUF, const_cast<v4l2_buffer*>(&fBuffers[frame].first), false);
    if (rc==-4)
    {
        //cout << "ERROR - Waiting for frame " << frame << " timed out." << endl;
        return kSKIP;
    }
    //alarm(0);

    if (rc==-1)
    {
        gLog << err << "ERROR - Waiting for " << frame << " frame failed." << endl;
        return kFALSE;
    }

    if (ptr)
        *ptr = static_cast<unsigned char*>(fBuffers[frame].second);

    return kTRUE;
}

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