def test_exif_string(self):
exif_header = ParseExifData(struct.pack('4s2B2s', b'Exif', 0, 0, b'MM'))
self.assertEqual(exif_header.check_exif_string(), 6)
exif_header = ParseExifData(struct.pack('7s2B2s', b'aaaExif', 0, 0, b'MM'))
self.assertEqual(exif_header.check_exif_string(), 9)
exif_header = ParseExifData(struct.pack('3s', b'aaa'))
self.assertEqual(exif_header.check_exif_string(), -1)
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)))
def test_get_tag_info(self):
exif_header = ParseExifData(struct.pack('>4s2B2s2BL3H2L', b'Exif', 0, 0, b'MM', 0x00, 0x2a, 0x00000008, 0x0001, 0x0002, 0x0003, 0x11223344, 0xaabbccdd))
exif_header.check_exif_string()
exif_header.ifd_0th_offset()
tag_info = exif_header.get_tag_info("0th", 0)
self.assertEqual(tag_info[0], 0x0002)
self.assertEqual(tag_info[1], 0x0003)
self.assertEqual(tag_info[2], 0x11223344)
self.assertEqual(tag_info[3], 0xaabbccdd)
exif_header = ParseExifData(struct.pack('<4s2B2s2BL3H2L', b'Exif', 0, 0, b'II', 0x00, 0x2a, 0x00000008, 0x0001, 0x0002, 0x0003, 0x11223344, 0xaabbccdd))
exif_header.check_exif_string()
exif_header.ifd_0th_offset()
tag_info = exif_header.get_tag_info("0th", 0)
self.assertEqual(tag_info[0], 0x0002)
self.assertEqual(tag_info[1], 0x0003)
self.assertEqual(tag_info[2], 0x11223344)
self.assertEqual(tag_info[3], 0xaabbccdd)
def test_tag_number(self):
exif_header = ParseExifData(struct.pack('>4s2B2s2BLH', b'Exif', 0, 0, b'MM', 0x00, 0x2a, 0x00000008, 0x000b))
exif_header.check_exif_string()
exif_header.ifd_0th_offset()
self.assertEqual(exif_header.tag_number("0th"), 0x000b)
exif_header = ParseExifData(struct.pack('<4s2B2s2BLH', b'Exif', 0, 0, b'II', 0x00, 0x2a, 0x00000008, 0x000b))
exif_header.check_exif_string()
exif_header.ifd_0th_offset()
self.assertEqual(exif_header.tag_number("0th"), 0x000b)
def test_ifd_0th_offset(self):
exif_header = ParseExifData(struct.pack('>4s2B2s2BL', b'Exif', 0, 0, b'MM', 0, 0, 0x12345678))
exif_header.check_exif_string()
exif_header.ifd_0th_offset()
self.assertEqual(exif_header.ifd_offset("0th"), 0x12345678)
exif_header = ParseExifData(struct.pack('<4s2B2s2BL', b'Exif', 0, 0, b'II', 0, 0, 0x12345678))
exif_header.check_exif_string()
exif_header.ifd_0th_offset()
self.assertEqual(exif_header.ifd_offset("0th"), 0x12345678)
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 test_parse_ifd_tag_info(self):
exif_header = ParseExifData(struct.pack('<4s2B2s2BL3H3L1H', b'Exif', 0, 0, b'II', 0x00, 0x2a, 0x00000008, 0x0001, 0x8825, 0x0003, 0x11223344, 26, 0xaabbccdd, 0x0))
exif_header.check_exif_string()
exif_header.ifd_0th_offset()
exif_header.ifd_1st_offset(1)
exif_header.get_tag_info("0th", 0)
self.assertEqual(exif_header.ifd_offset("gps"), 26)
self.assertEqual(exif_header.tag_number("gps"), 0x0)
for count in range(exif_header.tag_number("gps")):
exif_header.get_tag_info("gps", count)
self.assertEqual(exif_header.exif_info_length("gps"), 0)
def test_intr_offset(self):
exif_header = ParseExifData(struct.pack('>4s2B2s2BL3H3L', b'Exif', 0, 0, b'MM', 0x00, 0x2a, 0x00000008, 0x0001, 0xA005, 0x0003, 0x11223344, 0xaabbccdd, 0x55667788))
exif_header.check_exif_string()
exif_header.ifd_0th_offset()
exif_header.ifd_1st_offset(1)
exif_header.get_tag_info("0th", 0)
self.assertEqual(exif_header.ifd_offset("intr"), 0xaabbccdd)
exif_header = ParseExifData(struct.pack('<4s2B2s2BL3H3L', b'Exif', 0, 0, b'II', 0x00, 0x2a, 0x00000008, 0x0001, 0xA005, 0x0003, 0x11223344, 0xaabbccdd, 0x55667788))
exif_header.check_exif_string()
exif_header.ifd_0th_offset()
exif_header.ifd_1st_offset(1)
exif_header.get_tag_info("0th", 0)
self.assertEqual(exif_header.ifd_offset("intr"), 0xaabbccdd)