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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _validate_codeblock_size(self, cparams):
 """ Code block dimensions must satisfy certain restrictions. They must both be a power of 2 and the total area defined by the width and height cannot be either too great or too small for the codec. """

        if cparams.cblockw_init != 0 and cparams.cblockh_init != 0:
            # These fields ARE zero if uninitialized.
            width = cparams.cblockw_init
            height = cparams.cblockh_init
            if height * width > 4096 or height < 4 or width < 4:
                msg = ("The code block area is specified as "
                       "{height} x {width} = {area} square pixels.  "
                       "Code block area cannot exceed 4096 square pixels.  "
                       "Code block height and width dimensions must be larger "
                       "than 4 pixels.")
                msg = msg.format(height=height, width=width,
                                 area=height * width)
                raise IOError(msg)
            if ((math.log(height, 2) != math.floor(math.log(height, 2)) or
                 math.log(width, 2) != math.floor(math.log(width, 2)))):
                msg = ("Bad code block size ({height} x {width}).  "
                       "The dimensions must be powers of 2.")
                msg = msg.format(height=height, width=width)
                raise IOError(msg)