def write(self, fptr):
        """Write an Image Header box to file.
        """
        fptr.write(struct.pack('>I4s', 22, b'ihdr'))

        # signedness and bps are stored together in a single byte
        bit_depth_signedness = 0x80 if self.signed else 0x00
        bit_depth_signedness |= self.bits_per_component - 1
        read_buffer = struct.pack('>IIHBBBB',
                                  self.height,
                                  self.width,
                                  self.num_components,
                                  bit_depth_signedness,
                                  self.compression,
                                  1 if self.colorspace_unknown else 0,
                                  1 if self.ip_provided else 0)
        fptr.write(read_buffer)
def write ( self , fptr ) : fptr . write ( struct . pack ( '>I4s' , 22 , b'ihdr' ) ) bit_depth_signedness = 0x80 if self . signed else 0x00 bit_depth_signedness |= self . bits_per_component - 1 read_buffer = struct . pack ( '>IIHBBBB' , self . height , self . width , self . num_components , bit_depth_signedness , self . compression , 1 if self . colorspace_unknown else 0 , 1 if self . ip_provided else 0 ) fptr . write ( read_buffer )
Write an Image Header box to file.