class InternationalText(bin.Structure, encoding='utf8'):
keyword = bin.String()
is_compressed = bin.Integer(size=1)
compression = bin.Integer(size=1, choices=COMPRESSION_CHOICES)
language = bin.String()
translated_keyword = bin.String()
content = bin.Bytes(size=bin.Remainder) # TODO: decompress
class Header(bin.Structure):
marker = bin.FixedString(b'JFIF\x00')
major_version = bin.Integer(size=1)
minor_version = bin.Integer(size=1)
density_units = bin.Integer(size=1, choicse=DENSITY_UNITS)
x_density = bin.Integer(size=2)
y_density = bin.Integer(size=2)
thumb_width = bin.Integer(size=1)
thumb_height = bin.Integer(size=1)
thumb_data = bin.Bytes(size=3 * thumb_width * thumb_height)
@property
def version(self):
return '%i.%02i' % (self.major_version, self.minor_version)
class TGA(bin.Structure, endianness=bin.LittleEndian):
id_size = bin.Integer(size=1)
color_map_type = bin.Integer(size=1, choices=COLOR_MAP_TYPES)
image_type = bin.Integer(size=1, choices=IMAGE_TYPES)
color_map_info = bin.SubStructure(ColorMap)
x_origin = bin.Integer(size=2)
y_origin = bin.Integer(size=2)
width = bin.Integer(size=2)
height = bin.Integer(size=2)
bit_depth = bin.Integer(size=1)
image_origin, alpha_depth = bin.SubStructure(AlphaOrigin)
image_id = bin.Bytes(size=id_size)
color_map_data = bin.List(bin.Integer(size=color_map_info.entry_size) / 8,
size=color_map_info.length)
image_data = bin.List(bin.Integer(size=1), size=width * height * bit_depth)
class BMP(bin.Structure, endianness=bin.LittleEndian):
signature = bin.FixedString('BM')
filesize = bin.Integer('Total file size', size=4)
reserved = bin.Reserved(size=4)
data_offset = bin.Integer('Offset of the actual image data', size=4)
header_size = bin.Integer(size=4, default_value=40)
width = bin.Integer(size=4)
height = bin.Integer(size=4)
plane_count = bin.Integer(size=2, default_value=1)
bit_depth = bin.Integer(size=2)
compression_type = bin.Integer(size=4,
choices=COMPRESSION_TYPES,
default_value=0)
data_size = bin.Integer('Size of the actual image data', size=4)
ppm_x = bin.Integer('Pixels per meter (X axis)', size=4)
ppm_y = bin.Integer('Pixels per meter (Y axis)', size=4)
color_count = bin.Integer('Number of colors', size=4)
important_color_count = bin.Integer('Number of important colors', size=4)
palette = bin.List(PaletteColor, size=color_count)
pixel_data = bin.Bytes(size=bin.Remainder)
class EmptyChunk(bin.Chunk):
id = bin.Integer(size=2)
size = bin.Bytes(size=0)
payload = bin.Payload(size=0)
class ICCProfile(bin.Structure):
name = bin.String(encoding='latin-1')
compression = bin.Integer(size=1, choices=COMPRESSION_CHOICES)
profile = bin.Bytes(size=bin.Remainder) # TODO: decompress
class CompressedText(bin.Structure, encoding='latin-1'):
keyword = bin.String()
compression = bin.Integer(size=1, choices=COMPRESSION_CHOICES)
content = bin.Bytes(size=bin.Remainder) # TODO: decompress
class Data(bin.Structure):
data = bin.Bytes(size=bin.Remainder)
class Transparency(bin.Structure):
data = bin.Bytes(size=bin.Remainder)
class Background(bin.Structure):
data = bin.Bytes(size=bin.Remainder)
class SignificantBits(bin.Structure):
data = bin.Bytes(size=bin.Remainder)