def test03_convert(param):
p1, p2 = param
s1 = Struct().append('val', p1[1])
s2 = Struct().append('val', p2[1])
s = StructConverter(s1, s2)
values = list(range(10))
if Struct.is_signed(p1[1]) and Struct.is_signed(p2[1]):
values += list(range(-10, 0))
max_range = int(min(Struct.range(p1[1])[1], Struct.range(p2[1])[1]))
if max_range > 1024:
values += list(range(1000, 1024))
# Native -> Native
check_conversion(s, '@' + p1[0] * len(values),
'@' + p2[0] * len(values), values)
# LE -> BE
s1 = Struct(byte_order=Struct.ByteOrder.BigEndian).append('val', p1[1])
s2 = Struct(byte_order=Struct.ByteOrder.LittleEndian).append('val', p2[1])
s = StructConverter(s1, s2)
check_conversion(s, '>' + p1[0] * len(values),
'<' + p2[0] * len(values), values)
# BE -> LE
s1 = Struct(byte_order=Struct.ByteOrder.LittleEndian).append('val', p1[1])
s2 = Struct(byte_order=Struct.ByteOrder.BigEndian).append('val', p2[1])
s = StructConverter(s1, s2)
check_conversion(s, '<' + p1[0] * len(values),
'>' + p2[0] * len(values), values)
def test08_roundtrip_normalization_int2int(param):
if Struct.is_float(param[1]):
return
s1_type = Struct.Type.Int8 if Struct.is_signed(param[1]) else Struct.Type.UInt8
s1_dtype = 'b' if Struct.is_signed(param[1]) else 'B'
s1_range = Struct.range(s1_type)
s2_range = Struct.range(param[1])
s1 = Struct().append('val', s1_type, Struct.Flags.Normalized)
s2 = Struct().append('val', param[1], Struct.Flags.Normalized)
s = StructConverter(s1, s2)
values_in = list(range(int(s1_range[0]), int(s1_range[1] + 1)))
values_out = np.array(values_in, dtype=np.float64)
values_out *= s2_range[1] / s1_range[1]
values_out = np.rint(values_out)
values_out = np.maximum(values_out, s2_range[0])
values_out = np.minimum(values_out, s2_range[1])
values_out = np.array(values_out, s2.dtype()['val'])
check_conversion(s, '@' + (s1_dtype * len(values_in)),
'@' + (param[0] * len(values_in)),
values_in, values_out)
def test07_roundtrip_normalization(param):
s1 = Struct().append('val', param[1], Struct.Flags.Normalized)
s2 = Struct().append('val', Struct.Type.Float32)
s = StructConverter(s1, s2)
max_range = 1.0
if Struct.is_integer(param[1]):
max_range = float(Struct.range(param[1])[1])
values_in = list(range(10))
values_out = [i / max_range for i in range(10)]
check_conversion(s, '@' + (param[0] * 10), '@' + ('f' * 10),
values_in, values_out)
s = StructConverter(s2, s1)
check_conversion(s, '@' + ('f' * 10), '@' + (param[0] * 10),
values_out, values_in)