Capture_get will call some DSP function or not?

Hi 

   I using DVSDK 4.03, and I can find some app examples that start capture. 

   I had question about stream transmit. 

  When Capture_get on DMAI (138) funtion called,

Int Capture_get(Capture_Handle hCapture, Buffer_Handle *hBufPtr)
{
.....

/* Get a frame buffer with captured data */
if (ioctl(hCapture->fd, VIDIOC_DQBUF, &v4l2buf) < 0) { 
Dmai_err1("VIDIOC_DQBUF failed (%s)\n", strerror(errno));
return Dmai_EFAIL;
}

....

}

I want to start capture on DMAI, and then process some raw frame data in DSP(may be c6accel, code engine ... etc),

When ioctl called, is some DSP function will called?  If will called, i think that I can get stream data in DSP. right?

  Thanks very much!