def _decode_resolution(data):
h_res, h_res_unit, width_unit, v_res, v_res_unit, height_unit = unpack("4s HH 4s HH", data)
h_res = decode_fixed_point_32bit(h_res)
v_res = decode_fixed_point_32bit(v_res)
return ResolutionInfo(h_res, h_res_unit, width_unit, v_res, v_res_unit, height_unit)
def _decode_protected(data):
flag = unpack("I", data)[0]
return ProtectedSetting(
bool(flag & 1),
bool(flag & 2),
bool(flag & 4),
)
def _decode_print_scale(data):
style, x, y, scale = unpack("H3f", data)
if not PrintScaleStyle.is_known(style):
warnings.warn("Unknown print scale style (%s)" % style)
return PrintScale(style, x, y, scale)
def _decode_print_scale(data):
style, x, y, scale = unpack("H3f", data)
if not PrintScaleStyle.is_known(style):
warnings.warn("Unknown print scale style (%s)" % style)
return PrintScale(style, x, y, scale)
def _decode_protected(data):
flag = unpack("I", data)[0]
return ProtectedSetting(
bool(flag & 1),
bool(flag & 2),
bool(flag & 4),
)
def _decode_resolution(data):
h_res, h_res_unit, width_unit, v_res, v_res_unit, height_unit = unpack(
"4s HH 4s HH", data)
h_res = decode_fixed_point_32bit(h_res)
v_res = decode_fixed_point_32bit(v_res)
return ResolutionInfo(h_res, h_res_unit, width_unit, v_res, v_res_unit,
height_unit)
def _decode_print_flags_info(data):
return PrintFlagsInfo(*(unpack("HBxIh", data)))
def _decode_print_flags(data):
return PrintFlags(*(unpack("9?x", data)))
def boolean(data):
return bool(unpack("?", data[:1])[0])
def _decode_print_flags(data):
return PrintFlags(*(unpack("9?x", data)))
def _decode_pixel_aspect_ration(data):
version = unpack("I", data[:4])[0]
aspect = unpack("d", data[4:])[0]
return PixelAspectRatio(version, aspect)
def decoder(data):
return unpack(fmt, data)[0]
def test_unpack(fmt, value, expected):
assert unpack(fmt, value)[0] == expected
def decoder(data, **kwargs):
return unpack(fmt, data)[0]
def decoder(data):
# truncating data if it's bigger...
return unpack(fmt, data[:fmt_size])[0]
def _decode_pixel_aspect_ration(data):
version = unpack("I", data[:4])[0]
aspect = unpack("d", data[4:])[0]
return PixelAspectRation(version, aspect)
def _decode_print_flags_info(data):
return PrintFlagsInfo(*(unpack("HBxIh", data)))
def _decode_print_flags(data):
try:
return PrintFlags(*(unpack("9?x", data)))
except struct.error as e:
warnings.warn("%s" % e)
return data
