Slow refresh rate streaming the camera preview to a display

[jens6151 0 1 1]

@yokonav
I used the imageproc for rotation and found out that it automatically converts byte order, even if you set to no change. This was my code with rotation.
It took about 1-2ms.

  putreg32(1, ROT_INTR_ENABLE);
  putreg32(0, ROT_INTR_DISABLE);

  putreg32(hsize, ROT_SET_SRC_HSIZE);
  putreg32(vsize, ROT_SET_SRC_VSIZE);
  putreg32(CXD56_PHYSADDR(ibuf), ROT_SET_SRC_ADDRESS);

  putreg32(hsize, ROT_SET_SRC_PITCH);
  putreg32(CXD56_PHYSADDR(obuf), ROT_SET_DST_ADDRESS);

  putreg32(hsize, ROT_SET_DST_PITCH);

  putreg32(0, ROT_CONV_CTRL);     // 0:NOCONVERT 1:YCBCR422_RGB565 2:RGB565_YCBCR422
  putreg32(0, ROT_RGB_ALIGNMENT); // 0:RGB; 1:BGR
  putreg32(2, ROT_SET_DIRECTION); // No rotation  Right 90 degrees  Right 180 degrees   Right 270 degrees
  putreg32(1, ROT_COMMAND);       // start rotation

[jens6151 0 1 1]

short addition.
Input and Output is different in my case.