int MotionCompensator::GetRefPixelLuma(int x, int y)
{
	int index = x/16 + ref_width*(y/16);
	return reference_frame->getMacroblock(index)->luma[y%16][x%16];
}

int MotionCompensator::GetRefPixelCb(int x, int y)
{
	int index = x/16 + ref_width*(y/16);
	return reference_frame->getMacroblock(index)->cb[y%16][x%16];
}

int MotionCompensator::GetRefPixelCr(int x, int y)
{
	int index = x/16 + ref_width*(y/16);
	return reference_frame->getMacroblock(index)->cr[y%16][x%16];
}