def test_binary_format(self):
exif_header = ParseExifData(struct.pack('4s2B2s', b'Exif', 0, 0, b'MM'))
exif_header.check_exif_string()
self.assertEqual(exif_header.exif_byte_order(), exif_header.BYTE_ORDER_BIG_ENDIAN)
exif_header = ParseExifData(struct.pack('4s2B2s', b'Exif', 0, 0, b'II'))
exif_header.check_exif_string()
self.assertEqual(exif_header.exif_byte_order(), exif_header.BYTE_ORDER_LITTLE_ENDIAN)
exif_header = ParseExifData(struct.pack('4s2B2s', b'Exif', 0, 0, b'MI'))
exif_header.check_exif_string()
self.assertEqual(exif_header.exif_byte_order(), exif_header.BYTE_ORDER_ERROR)
exif_header = ParseExifData(struct.pack('4s2B2s', b'Exif', 0, 0, b'IM'))
exif_header.check_exif_string()
self.assertEqual(exif_header.exif_byte_order(), exif_header.BYTE_ORDER_ERROR)
def display_exif_info(exif_header: ped, read_jpeg_data: bytes,
ifd: str) -> None:
"""Exifの解析結果を表示する"""
byte_order = exif_header.exif_byte_order()
base_offset = exif_header.exif_base_offset()
exif_info_length = exif_header.exif_info_length(ifd)
print('-------------------- {:s} --------------------'.format(ifd))
print('{:4s} IFD Offset = 0x{:08x}'.format(ifd,
exif_header.ifd_offset(ifd)))
print('{:4s} Tag Number = {:d}'.format(ifd, exif_info_length))
for count in range(exif_info_length):
exif_info = eti(ifd, byte_order, base_offset,
exif_header.exif_info(ifd, count))
print('{:s} : [{:s} len = {:6d}] (0x{:08x}) : {:s}'.format( \
_adjust_string(ADJUST_LEFT, 30, exif_info.change_id_to_string()), \
_adjust_string(ADJUST_LEFT, 10, exif_info.change_format_to_string()), \
exif_info.exif_tag_length(), \
exif_info.exif_tag_value(), \
exif_info.change_tag_value_to_string(read_jpeg_data)))