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Pillow/Tests/test_lib_pack.py
Graham Markall e500dcfb97 Add support for unpacking 16-bit BGRA
2022-03-31 10:42:54 +01:00

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import sys
import pytest
from PIL import Image
X = 255
class TestLibPack:
def assert_pack(self, mode, rawmode, data, *pixels):
"""
data - either raw bytes with data or just number of bytes in rawmode.
"""
im = Image.new(mode, (len(pixels), 1))
for x, pixel in enumerate(pixels):
im.putpixel((x, 0), pixel)
if isinstance(data, int):
data_len = data * len(pixels)
data = bytes(range(1, data_len + 1))
assert data == im.tobytes("raw", rawmode)
def test_1(self):
self.assert_pack("1", "1", b"\x01", 0, 0, 0, 0, 0, 0, 0, X)
self.assert_pack("1", "1;I", b"\x01", X, X, X, X, X, X, X, 0)
self.assert_pack("1", "1;R", b"\x01", X, 0, 0, 0, 0, 0, 0, 0)
self.assert_pack("1", "1;IR", b"\x01", 0, X, X, X, X, X, X, X)
self.assert_pack("1", "1", b"\xaa", X, 0, X, 0, X, 0, X, 0)
self.assert_pack("1", "1;I", b"\xaa", 0, X, 0, X, 0, X, 0, X)
self.assert_pack("1", "1;R", b"\xaa", 0, X, 0, X, 0, X, 0, X)
self.assert_pack("1", "1;IR", b"\xaa", X, 0, X, 0, X, 0, X, 0)
self.assert_pack("1", "L", b"\xff\x00\x00\xff\x00\x00", X, 0, 0, X, 0, 0)
def test_L(self):
self.assert_pack("L", "L", 1, 1, 2, 3, 4)
self.assert_pack("L", "L;16", b"\x00\xc6\x00\xaf", 198, 175)
self.assert_pack("L", "L;16B", b"\xc6\x00\xaf\x00", 198, 175)
def test_LA(self):
self.assert_pack("LA", "LA", 2, (1, 2), (3, 4), (5, 6))
self.assert_pack("LA", "LA;L", 2, (1, 4), (2, 5), (3, 6))
def test_La(self):
self.assert_pack("La", "La", 2, (1, 2), (3, 4), (5, 6))
def test_P(self):
self.assert_pack("P", "P;1", b"\xe4", 1, 1, 1, 0, 0, 255, 0, 0)
self.assert_pack("P", "P;2", b"\xe4", 3, 2, 1, 0)
self.assert_pack("P", "P;4", b"\x02\xef", 0, 2, 14, 15)
self.assert_pack("P", "P", 1, 1, 2, 3, 4)
def test_PA(self):
self.assert_pack("PA", "PA", 2, (1, 2), (3, 4), (5, 6))
self.assert_pack("PA", "PA;L", 2, (1, 4), (2, 5), (3, 6))
def test_RGB(self):
self.assert_pack("RGB", "RGB", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
self.assert_pack(
"RGB", "RGBX", b"\x01\x02\x03\xff\x05\x06\x07\xff", (1, 2, 3), (5, 6, 7)
)
self.assert_pack(
"RGB", "XRGB", b"\x00\x02\x03\x04\x00\x06\x07\x08", (2, 3, 4), (6, 7, 8)
)
self.assert_pack("RGB", "BGR", 3, (3, 2, 1), (6, 5, 4), (9, 8, 7))
self.assert_pack(
"RGB", "BGRX", b"\x01\x02\x03\x00\x05\x06\x07\x00", (3, 2, 1), (7, 6, 5)
)
self.assert_pack(
"RGB", "XBGR", b"\x00\x02\x03\x04\x00\x06\x07\x08", (4, 3, 2), (8, 7, 6)
)
self.assert_pack("RGB", "RGB;L", 3, (1, 4, 7), (2, 5, 8), (3, 6, 9))
self.assert_pack("RGB", "R", 1, (1, 9, 9), (2, 9, 9), (3, 9, 9))
self.assert_pack("RGB", "G", 1, (9, 1, 9), (9, 2, 9), (9, 3, 9))
self.assert_pack("RGB", "B", 1, (9, 9, 1), (9, 9, 2), (9, 9, 3))
def test_RGBA(self):
self.assert_pack("RGBA", "RGBA", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12))
self.assert_pack(
"RGBA", "RGBA;L", 4, (1, 4, 7, 10), (2, 5, 8, 11), (3, 6, 9, 12)
)
self.assert_pack("RGBA", "RGB", 3, (1, 2, 3, 14), (4, 5, 6, 15), (7, 8, 9, 16))
self.assert_pack("RGBA", "BGR", 3, (3, 2, 1, 14), (6, 5, 4, 15), (9, 8, 7, 16))
self.assert_pack("RGBA", "BGRA", 4, (3, 2, 1, 4), (7, 6, 5, 8), (11, 10, 9, 12))
self.assert_pack("RGBA", "ABGR", 4, (4, 3, 2, 1), (8, 7, 6, 5), (12, 11, 10, 9))
self.assert_pack(
"RGBA",
"BGRa",
4,
(191, 127, 63, 4),
(223, 191, 159, 8),
(233, 212, 191, 12),
)
self.assert_pack("RGBA", "R", 1, (1, 0, 8, 9), (2, 0, 8, 9), (3, 0, 8, 0))
self.assert_pack("RGBA", "G", 1, (6, 1, 8, 9), (6, 2, 8, 9), (6, 3, 8, 9))
self.assert_pack("RGBA", "B", 1, (6, 7, 1, 9), (6, 7, 2, 0), (6, 7, 3, 9))
self.assert_pack("RGBA", "A", 1, (6, 7, 0, 1), (6, 7, 0, 2), (0, 7, 0, 3))
def test_RGBa(self):
self.assert_pack("RGBa", "RGBa", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12))
self.assert_pack("RGBa", "BGRa", 4, (3, 2, 1, 4), (7, 6, 5, 8), (11, 10, 9, 12))
self.assert_pack("RGBa", "aBGR", 4, (4, 3, 2, 1), (8, 7, 6, 5), (12, 11, 10, 9))
def test_RGBX(self):
self.assert_pack("RGBX", "RGBX", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12))
self.assert_pack(
"RGBX", "RGBX;L", 4, (1, 4, 7, 10), (2, 5, 8, 11), (3, 6, 9, 12)
)
self.assert_pack("RGBX", "RGB", 3, (1, 2, 3, X), (4, 5, 6, X), (7, 8, 9, X))
self.assert_pack("RGBX", "BGR", 3, (3, 2, 1, X), (6, 5, 4, X), (9, 8, 7, X))
self.assert_pack(
"RGBX",
"BGRX",
b"\x01\x02\x03\x00\x05\x06\x07\x00\t\n\x0b\x00",
(3, 2, 1, X),
(7, 6, 5, X),
(11, 10, 9, X),
)
self.assert_pack(
"RGBX",
"XBGR",
b"\x00\x02\x03\x04\x00\x06\x07\x08\x00\n\x0b\x0c",
(4, 3, 2, X),
(8, 7, 6, X),
(12, 11, 10, X),
)
self.assert_pack("RGBX", "R", 1, (1, 0, 8, 9), (2, 0, 8, 9), (3, 0, 8, 0))
self.assert_pack("RGBX", "G", 1, (6, 1, 8, 9), (6, 2, 8, 9), (6, 3, 8, 9))
self.assert_pack("RGBX", "B", 1, (6, 7, 1, 9), (6, 7, 2, 0), (6, 7, 3, 9))
self.assert_pack("RGBX", "X", 1, (6, 7, 0, 1), (6, 7, 0, 2), (0, 7, 0, 3))
def test_CMYK(self):
self.assert_pack("CMYK", "CMYK", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12))
self.assert_pack(
"CMYK",
"CMYK;I",
4,
(254, 253, 252, 251),
(250, 249, 248, 247),
(246, 245, 244, 243),
)
self.assert_pack(
"CMYK", "CMYK;L", 4, (1, 4, 7, 10), (2, 5, 8, 11), (3, 6, 9, 12)
)
self.assert_pack("CMYK", "K", 1, (6, 7, 0, 1), (6, 7, 0, 2), (0, 7, 0, 3))
def test_YCbCr(self):
self.assert_pack("YCbCr", "YCbCr", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
self.assert_pack("YCbCr", "YCbCr;L", 3, (1, 4, 7), (2, 5, 8), (3, 6, 9))
self.assert_pack(
"YCbCr",
"YCbCrX",
b"\x01\x02\x03\xff\x05\x06\x07\xff\t\n\x0b\xff",
(1, 2, 3),
(5, 6, 7),
(9, 10, 11),
)
self.assert_pack(
"YCbCr",
"YCbCrK",
b"\x01\x02\x03\xff\x05\x06\x07\xff\t\n\x0b\xff",
(1, 2, 3),
(5, 6, 7),
(9, 10, 11),
)
self.assert_pack("YCbCr", "Y", 1, (1, 0, 8, 9), (2, 0, 8, 9), (3, 0, 8, 0))
self.assert_pack("YCbCr", "Cb", 1, (6, 1, 8, 9), (6, 2, 8, 9), (6, 3, 8, 9))
self.assert_pack("YCbCr", "Cr", 1, (6, 7, 1, 9), (6, 7, 2, 0), (6, 7, 3, 9))
def test_LAB(self):
self.assert_pack("LAB", "LAB", 3, (1, 130, 131), (4, 133, 134), (7, 136, 137))
self.assert_pack("LAB", "L", 1, (1, 9, 9), (2, 9, 9), (3, 9, 9))
self.assert_pack("LAB", "A", 1, (9, 1, 9), (9, 2, 9), (9, 3, 9))
self.assert_pack("LAB", "B", 1, (9, 9, 1), (9, 9, 2), (9, 9, 3))
def test_HSV(self):
self.assert_pack("HSV", "HSV", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
self.assert_pack("HSV", "H", 1, (1, 9, 9), (2, 9, 9), (3, 9, 9))
self.assert_pack("HSV", "S", 1, (9, 1, 9), (9, 2, 9), (9, 3, 9))
self.assert_pack("HSV", "V", 1, (9, 9, 1), (9, 9, 2), (9, 9, 3))
def test_I(self):
self.assert_pack("I", "I;16B", 2, 0x0102, 0x0304)
self.assert_pack(
"I", "I;32S", b"\x83\x00\x00\x01\x01\x00\x00\x83", 0x01000083, -2097151999
)
if sys.byteorder == "little":
self.assert_pack("I", "I", 4, 0x04030201, 0x08070605)
self.assert_pack(
"I",
"I;32NS",
b"\x83\x00\x00\x01\x01\x00\x00\x83",
0x01000083,
-2097151999,
)
else:
self.assert_pack("I", "I", 4, 0x01020304, 0x05060708)
self.assert_pack(
"I",
"I;32NS",
b"\x83\x00\x00\x01\x01\x00\x00\x83",
-2097151999,
0x01000083,
)
def test_F_float(self):
self.assert_pack("F", "F;32F", 4, 1.539989614439558e-36, 4.063216068939723e-34)
if sys.byteorder == "little":
self.assert_pack("F", "F", 4, 1.539989614439558e-36, 4.063216068939723e-34)
self.assert_pack(
"F", "F;32NF", 4, 1.539989614439558e-36, 4.063216068939723e-34
)
else:
self.assert_pack("F", "F", 4, 2.387939260590663e-38, 6.301941157072183e-36)
self.assert_pack(
"F", "F;32NF", 4, 2.387939260590663e-38, 6.301941157072183e-36
)
class TestLibUnpack:
def assert_unpack(self, mode, rawmode, data, *pixels):
"""
data - either raw bytes with data or just number of bytes in rawmode.
"""
if isinstance(data, int):
data_len = data * len(pixels)
data = bytes(range(1, data_len + 1))
im = Image.frombytes(mode, (len(pixels), 1), data, "raw", rawmode, 0, 1)
for x, pixel in enumerate(pixels):
assert pixel == im.getpixel((x, 0))
def test_1(self):
self.assert_unpack("1", "1", b"\x01", 0, 0, 0, 0, 0, 0, 0, X)
self.assert_unpack("1", "1;I", b"\x01", X, X, X, X, X, X, X, 0)
self.assert_unpack("1", "1;R", b"\x01", X, 0, 0, 0, 0, 0, 0, 0)
self.assert_unpack("1", "1;IR", b"\x01", 0, X, X, X, X, X, X, X)
self.assert_unpack("1", "1", b"\xaa", X, 0, X, 0, X, 0, X, 0)
self.assert_unpack("1", "1;I", b"\xaa", 0, X, 0, X, 0, X, 0, X)
self.assert_unpack("1", "1;R", b"\xaa", 0, X, 0, X, 0, X, 0, X)
self.assert_unpack("1", "1;IR", b"\xaa", X, 0, X, 0, X, 0, X, 0)
self.assert_unpack("1", "1;8", b"\x00\x01\x02\xff", 0, X, X, X)
def test_L(self):
self.assert_unpack("L", "L;2", b"\xe4", 255, 170, 85, 0)
self.assert_unpack("L", "L;2I", b"\xe4", 0, 85, 170, 255)
self.assert_unpack("L", "L;2R", b"\xe4", 0, 170, 85, 255)
self.assert_unpack("L", "L;2IR", b"\xe4", 255, 85, 170, 0)
self.assert_unpack("L", "L;4", b"\x02\xef", 0, 34, 238, 255)
self.assert_unpack("L", "L;4I", b"\x02\xef", 255, 221, 17, 0)
self.assert_unpack("L", "L;4R", b"\x02\xef", 68, 0, 255, 119)
self.assert_unpack("L", "L;4IR", b"\x02\xef", 187, 255, 0, 136)
self.assert_unpack("L", "L", 1, 1, 2, 3, 4)
self.assert_unpack("L", "L;I", 1, 254, 253, 252, 251)
self.assert_unpack("L", "L;R", 1, 128, 64, 192, 32)
self.assert_unpack("L", "L;16", 2, 2, 4, 6, 8)
self.assert_unpack("L", "L;16B", 2, 1, 3, 5, 7)
self.assert_unpack("L", "L;16", b"\x00\xc6\x00\xaf", 198, 175)
self.assert_unpack("L", "L;16B", b"\xc6\x00\xaf\x00", 198, 175)
def test_LA(self):
self.assert_unpack("LA", "LA", 2, (1, 2), (3, 4), (5, 6))
self.assert_unpack("LA", "LA;L", 2, (1, 4), (2, 5), (3, 6))
def test_La(self):
self.assert_unpack("La", "La", 2, (1, 2), (3, 4), (5, 6))
def test_P(self):
self.assert_unpack("P", "P;1", b"\xe4", 1, 1, 1, 0, 0, 1, 0, 0)
self.assert_unpack("P", "P;2", b"\xe4", 3, 2, 1, 0)
# erroneous?
# self.assert_unpack("P", "P;2L", b'\xe4', 1, 1, 1, 0)
self.assert_unpack("P", "P;4", b"\x02\xef", 0, 2, 14, 15)
# erroneous?
# self.assert_unpack("P", "P;4L", b'\x02\xef', 2, 10, 10, 0)
self.assert_unpack("P", "P", 1, 1, 2, 3, 4)
self.assert_unpack("P", "P;R", 1, 128, 64, 192, 32)
def test_PA(self):
self.assert_unpack("PA", "PA", 2, (1, 2), (3, 4), (5, 6))
self.assert_unpack("PA", "PA;L", 2, (1, 4), (2, 5), (3, 6))
def test_RGB(self):
self.assert_unpack("RGB", "RGB", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
self.assert_unpack("RGB", "RGB;L", 3, (1, 4, 7), (2, 5, 8), (3, 6, 9))
self.assert_unpack("RGB", "RGB;R", 3, (128, 64, 192), (32, 160, 96))
self.assert_unpack("RGB", "RGB;16L", 6, (2, 4, 6), (8, 10, 12))
self.assert_unpack("RGB", "RGB;16B", 6, (1, 3, 5), (7, 9, 11))
self.assert_unpack("RGB", "BGR", 3, (3, 2, 1), (6, 5, 4), (9, 8, 7))
self.assert_unpack("RGB", "RGB;15", 2, (8, 131, 0), (24, 0, 8))
self.assert_unpack("RGB", "BGR;15", 2, (0, 131, 8), (8, 0, 24))
self.assert_unpack("RGB", "RGB;16", 2, (8, 64, 0), (24, 129, 0))
self.assert_unpack("RGB", "BGR;16", 2, (0, 64, 8), (0, 129, 24))
self.assert_unpack("RGB", "RGB;4B", 2, (17, 0, 34), (51, 0, 68))
self.assert_unpack("RGB", "RGBX", 4, (1, 2, 3), (5, 6, 7), (9, 10, 11))
self.assert_unpack("RGB", "RGBX;L", 4, (1, 4, 7), (2, 5, 8), (3, 6, 9))
self.assert_unpack("RGB", "BGRX", 4, (3, 2, 1), (7, 6, 5), (11, 10, 9))
self.assert_unpack("RGB", "XRGB", 4, (2, 3, 4), (6, 7, 8), (10, 11, 12))
self.assert_unpack("RGB", "XBGR", 4, (4, 3, 2), (8, 7, 6), (12, 11, 10))
self.assert_unpack(
"RGB",
"YCC;P",
b"D]\x9c\x82\x1a\x91\xfaOC\xe7J\x12", # random data
(127, 102, 0),
(192, 227, 0),
(213, 255, 170),
(98, 255, 133),
)
self.assert_unpack("RGB", "R", 1, (1, 0, 0), (2, 0, 0), (3, 0, 0))
self.assert_unpack("RGB", "G", 1, (0, 1, 0), (0, 2, 0), (0, 3, 0))
self.assert_unpack("RGB", "B", 1, (0, 0, 1), (0, 0, 2), (0, 0, 3))
self.assert_unpack("RGB", "R;16B", 2, (1, 0, 0), (3, 0, 0), (5, 0, 0))
self.assert_unpack("RGB", "G;16B", 2, (0, 1, 0), (0, 3, 0), (0, 5, 0))
self.assert_unpack("RGB", "B;16B", 2, (0, 0, 1), (0, 0, 3), (0, 0, 5))
self.assert_unpack("RGB", "R;16L", 2, (2, 0, 0), (4, 0, 0), (6, 0, 0))
self.assert_unpack("RGB", "G;16L", 2, (0, 2, 0), (0, 4, 0), (0, 6, 0))
self.assert_unpack("RGB", "B;16L", 2, (0, 0, 2), (0, 0, 4), (0, 0, 6))
if sys.byteorder == "little":
self.assert_unpack("RGB", "R;16N", 2, (2, 0, 0), (4, 0, 0), (6, 0, 0))
self.assert_unpack("RGB", "G;16N", 2, (0, 2, 0), (0, 4, 0), (0, 6, 0))
self.assert_unpack("RGB", "B;16N", 2, (0, 0, 2), (0, 0, 4), (0, 0, 6))
else:
self.assert_unpack("RGB", "R;16N", 2, (1, 0, 0), (3, 0, 0), (5, 0, 0))
self.assert_unpack("RGB", "G;16N", 2, (0, 1, 0), (0, 3, 0), (0, 5, 0))
self.assert_unpack("RGB", "B;16N", 2, (0, 0, 1), (0, 0, 3), (0, 0, 5))
def test_RGBA(self):
self.assert_unpack("RGBA", "LA", 2, (1, 1, 1, 2), (3, 3, 3, 4), (5, 5, 5, 6))
self.assert_unpack(
"RGBA", "LA;16B", 4, (1, 1, 1, 3), (5, 5, 5, 7), (9, 9, 9, 11)
)
self.assert_unpack(
"RGBA", "RGBA", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12)
)
self.assert_unpack(
"RGBA", "RGBAX", 5, (1, 2, 3, 4), (6, 7, 8, 9), (11, 12, 13, 14)
)
self.assert_unpack(
"RGBA", "RGBAXX", 6, (1, 2, 3, 4), (7, 8, 9, 10), (13, 14, 15, 16)
)
self.assert_unpack(
"RGBA",
"RGBa",
4,
(63, 127, 191, 4),
(159, 191, 223, 8),
(191, 212, 233, 12),
)
self.assert_unpack(
"RGBA",
"RGBa",
b"\x01\x02\x03\x00\x10\x20\x30\x7f\x10\x20\x30\xff",
(0, 0, 0, 0),
(32, 64, 96, 127),
(16, 32, 48, 255),
)
self.assert_unpack(
"RGBA",
"RGBaX",
b"\x01\x02\x03\x00-\x10\x20\x30\x7f-\x10\x20\x30\xff-",
(0, 0, 0, 0),
(32, 64, 96, 127),
(16, 32, 48, 255),
)
self.assert_unpack(
"RGBA",
"RGBaXX",
b"\x01\x02\x03\x00==\x10\x20\x30\x7f!!\x10\x20\x30\xff??",
(0, 0, 0, 0),
(32, 64, 96, 127),
(16, 32, 48, 255),
)
self.assert_unpack(
"RGBA",
"RGBa;16L",
8,
(63, 127, 191, 8),
(159, 191, 223, 16),
(191, 212, 233, 24),
)
self.assert_unpack(
"RGBA",
"RGBa;16L",
b"\x88\x01\x88\x02\x88\x03\x88\x00\x88\x10\x88\x20\x88\x30\x88\xff",
(0, 0, 0, 0),
(16, 32, 48, 255),
)
self.assert_unpack(
"RGBA",
"RGBa;16B",
8,
(36, 109, 182, 7),
(153, 187, 221, 15),
(188, 210, 232, 23),
)
self.assert_unpack(
"RGBA",
"RGBa;16B",
b"\x01\x88\x02\x88\x03\x88\x00\x88\x10\x88\x20\x88\x30\x88\xff\x88",
(0, 0, 0, 0),
(16, 32, 48, 255),
)
self.assert_unpack(
"RGBA",
"BGRa",
4,
(191, 127, 63, 4),
(223, 191, 159, 8),
(233, 212, 191, 12),
)
self.assert_unpack(
"RGBA",
"BGRa",
b"\x01\x02\x03\x00\x10\x20\x30\xff",
(0, 0, 0, 0),
(48, 32, 16, 255),
)
self.assert_unpack(
"RGBA",
"RGBA;I",
4,
(254, 253, 252, 4),
(250, 249, 248, 8),
(246, 245, 244, 12),
)
self.assert_unpack(
"RGBA", "RGBA;L", 4, (1, 4, 7, 10), (2, 5, 8, 11), (3, 6, 9, 12)
)
self.assert_unpack("RGBA", "RGBA;15", 2, (8, 131, 0, 0), (24, 0, 8, 0))
self.assert_unpack("RGBA", "BGRA;15", 2, (0, 131, 8, 0), (8, 0, 24, 0))
self.assert_unpack("RGBA", "RGBA;4B", 2, (17, 0, 34, 0), (51, 0, 68, 0))
self.assert_unpack("RGBA", "RGBA;16L", 8, (2, 4, 6, 8), (10, 12, 14, 16))
self.assert_unpack("RGBA", "RGBA;16B", 8, (1, 3, 5, 7), (9, 11, 13, 15))
self.assert_unpack("RGBA", "BGRA;16L", 8, (6, 4, 2, 8), (14, 12, 10, 16))
self.assert_unpack("RGBA", "BGRA;16B", 8, (5, 3, 1, 7), (13, 11, 9, 15))
self.assert_unpack(
"RGBA", "BGRA", 4, (3, 2, 1, 4), (7, 6, 5, 8), (11, 10, 9, 12)
)
self.assert_unpack(
"RGBA", "ARGB", 4, (2, 3, 4, 1), (6, 7, 8, 5), (10, 11, 12, 9)
)
self.assert_unpack(
"RGBA", "ABGR", 4, (4, 3, 2, 1), (8, 7, 6, 5), (12, 11, 10, 9)
)
self.assert_unpack(
"RGBA",
"YCCA;P",
b"]bE\x04\xdd\xbej\xed57T\xce\xac\xce:\x11", # random data
(0, 161, 0, 4),
(255, 255, 255, 237),
(27, 158, 0, 206),
(0, 118, 0, 17),
)
self.assert_unpack("RGBA", "R", 1, (1, 0, 0, 0), (2, 0, 0, 0), (3, 0, 0, 0))
self.assert_unpack("RGBA", "G", 1, (0, 1, 0, 0), (0, 2, 0, 0), (0, 3, 0, 0))
self.assert_unpack("RGBA", "B", 1, (0, 0, 1, 0), (0, 0, 2, 0), (0, 0, 3, 0))
self.assert_unpack("RGBA", "A", 1, (0, 0, 0, 1), (0, 0, 0, 2), (0, 0, 0, 3))
self.assert_unpack("RGBA", "R;16B", 2, (1, 0, 0, 0), (3, 0, 0, 0), (5, 0, 0, 0))
self.assert_unpack("RGBA", "G;16B", 2, (0, 1, 0, 0), (0, 3, 0, 0), (0, 5, 0, 0))
self.assert_unpack("RGBA", "B;16B", 2, (0, 0, 1, 0), (0, 0, 3, 0), (0, 0, 5, 0))
self.assert_unpack("RGBA", "A;16B", 2, (0, 0, 0, 1), (0, 0, 0, 3), (0, 0, 0, 5))
self.assert_unpack("RGBA", "R;16L", 2, (2, 0, 0, 0), (4, 0, 0, 0), (6, 0, 0, 0))
self.assert_unpack("RGBA", "G;16L", 2, (0, 2, 0, 0), (0, 4, 0, 0), (0, 6, 0, 0))
self.assert_unpack("RGBA", "B;16L", 2, (0, 0, 2, 0), (0, 0, 4, 0), (0, 0, 6, 0))
self.assert_unpack("RGBA", "A;16L", 2, (0, 0, 0, 2), (0, 0, 0, 4), (0, 0, 0, 6))
if sys.byteorder == "little":
self.assert_unpack(
"RGBA", "R;16N", 2, (2, 0, 0, 0), (4, 0, 0, 0), (6, 0, 0, 0)
)
self.assert_unpack(
"RGBA", "G;16N", 2, (0, 2, 0, 0), (0, 4, 0, 0), (0, 6, 0, 0)
)
self.assert_unpack(
"RGBA", "B;16N", 2, (0, 0, 2, 0), (0, 0, 4, 0), (0, 0, 6, 0)
)
self.assert_unpack(
"RGBA", "A;16N", 2, (0, 0, 0, 2), (0, 0, 0, 4), (0, 0, 0, 6)
)
else:
self.assert_unpack(
"RGBA", "R;16N", 2, (1, 0, 0, 0), (3, 0, 0, 0), (5, 0, 0, 0)
)
self.assert_unpack(
"RGBA", "G;16N", 2, (0, 1, 0, 0), (0, 3, 0, 0), (0, 5, 0, 0)
)
self.assert_unpack(
"RGBA", "B;16N", 2, (0, 0, 1, 0), (0, 0, 3, 0), (0, 0, 5, 0)
)
self.assert_unpack(
"RGBA", "A;16N", 2, (0, 0, 0, 1), (0, 0, 0, 3), (0, 0, 0, 5)
)
def test_RGBa(self):
self.assert_unpack(
"RGBa", "RGBa", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12)
)
self.assert_unpack(
"RGBa", "BGRa", 4, (3, 2, 1, 4), (7, 6, 5, 8), (11, 10, 9, 12)
)
self.assert_unpack(
"RGBa", "aRGB", 4, (2, 3, 4, 1), (6, 7, 8, 5), (10, 11, 12, 9)
)
self.assert_unpack(
"RGBa", "aBGR", 4, (4, 3, 2, 1), (8, 7, 6, 5), (12, 11, 10, 9)
)
def test_RGBX(self):
self.assert_unpack("RGBX", "RGB", 3, (1, 2, 3, X), (4, 5, 6, X), (7, 8, 9, X))
self.assert_unpack("RGBX", "RGB;L", 3, (1, 4, 7, X), (2, 5, 8, X), (3, 6, 9, X))
self.assert_unpack("RGBX", "RGB;16B", 6, (1, 3, 5, X), (7, 9, 11, X))
self.assert_unpack("RGBX", "BGR", 3, (3, 2, 1, X), (6, 5, 4, X), (9, 8, 7, X))
self.assert_unpack("RGBX", "RGB;15", 2, (8, 131, 0, X), (24, 0, 8, X))
self.assert_unpack("RGBX", "BGR;15", 2, (0, 131, 8, X), (8, 0, 24, X))
self.assert_unpack("RGBX", "RGB;4B", 2, (17, 0, 34, X), (51, 0, 68, X))
self.assert_unpack(
"RGBX", "RGBX", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12)
)
self.assert_unpack(
"RGBX", "RGBXX", 5, (1, 2, 3, 4), (6, 7, 8, 9), (11, 12, 13, 14)
)
self.assert_unpack(
"RGBX", "RGBXXX", 6, (1, 2, 3, 4), (7, 8, 9, 10), (13, 14, 15, 16)
)
self.assert_unpack(
"RGBX", "RGBX;L", 4, (1, 4, 7, 10), (2, 5, 8, 11), (3, 6, 9, 12)
)
self.assert_unpack("RGBX", "RGBX;16L", 8, (2, 4, 6, 8), (10, 12, 14, 16))
self.assert_unpack("RGBX", "RGBX;16B", 8, (1, 3, 5, 7), (9, 11, 13, 15))
self.assert_unpack(
"RGBX", "BGRX", 4, (3, 2, 1, X), (7, 6, 5, X), (11, 10, 9, X)
)
self.assert_unpack(
"RGBX", "XRGB", 4, (2, 3, 4, X), (6, 7, 8, X), (10, 11, 12, X)
)
self.assert_unpack(
"RGBX", "XBGR", 4, (4, 3, 2, X), (8, 7, 6, X), (12, 11, 10, X)
)
self.assert_unpack(
"RGBX",
"YCC;P",
b"D]\x9c\x82\x1a\x91\xfaOC\xe7J\x12", # random data
(127, 102, 0, X),
(192, 227, 0, X),
(213, 255, 170, X),
(98, 255, 133, X),
)
self.assert_unpack("RGBX", "R", 1, (1, 0, 0, 0), (2, 0, 0, 0), (3, 0, 0, 0))
self.assert_unpack("RGBX", "G", 1, (0, 1, 0, 0), (0, 2, 0, 0), (0, 3, 0, 0))
self.assert_unpack("RGBX", "B", 1, (0, 0, 1, 0), (0, 0, 2, 0), (0, 0, 3, 0))
self.assert_unpack("RGBX", "X", 1, (0, 0, 0, 1), (0, 0, 0, 2), (0, 0, 0, 3))
def test_CMYK(self):
self.assert_unpack(
"CMYK", "CMYK", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12)
)
self.assert_unpack(
"CMYK", "CMYKX", 5, (1, 2, 3, 4), (6, 7, 8, 9), (11, 12, 13, 14)
)
self.assert_unpack(
"CMYK", "CMYKXX", 6, (1, 2, 3, 4), (7, 8, 9, 10), (13, 14, 15, 16)
)
self.assert_unpack(
"CMYK",
"CMYK;I",
4,
(254, 253, 252, 251),
(250, 249, 248, 247),
(246, 245, 244, 243),
)
self.assert_unpack(
"CMYK", "CMYK;L", 4, (1, 4, 7, 10), (2, 5, 8, 11), (3, 6, 9, 12)
)
self.assert_unpack("CMYK", "C", 1, (1, 0, 0, 0), (2, 0, 0, 0), (3, 0, 0, 0))
self.assert_unpack("CMYK", "M", 1, (0, 1, 0, 0), (0, 2, 0, 0), (0, 3, 0, 0))
self.assert_unpack("CMYK", "Y", 1, (0, 0, 1, 0), (0, 0, 2, 0), (0, 0, 3, 0))
self.assert_unpack("CMYK", "K", 1, (0, 0, 0, 1), (0, 0, 0, 2), (0, 0, 0, 3))
self.assert_unpack(
"CMYK", "C;I", 1, (254, 0, 0, 0), (253, 0, 0, 0), (252, 0, 0, 0)
)
self.assert_unpack(
"CMYK", "M;I", 1, (0, 254, 0, 0), (0, 253, 0, 0), (0, 252, 0, 0)
)
self.assert_unpack(
"CMYK", "Y;I", 1, (0, 0, 254, 0), (0, 0, 253, 0), (0, 0, 252, 0)
)
self.assert_unpack(
"CMYK", "K;I", 1, (0, 0, 0, 254), (0, 0, 0, 253), (0, 0, 0, 252)
)
def test_YCbCr(self):
self.assert_unpack("YCbCr", "YCbCr", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
self.assert_unpack("YCbCr", "YCbCr;L", 3, (1, 4, 7), (2, 5, 8), (3, 6, 9))
self.assert_unpack("YCbCr", "YCbCrK", 4, (1, 2, 3), (5, 6, 7), (9, 10, 11))
self.assert_unpack("YCbCr", "YCbCrX", 4, (1, 2, 3), (5, 6, 7), (9, 10, 11))
def test_LAB(self):
self.assert_unpack("LAB", "LAB", 3, (1, 130, 131), (4, 133, 134), (7, 136, 137))
self.assert_unpack("LAB", "L", 1, (1, 0, 0), (2, 0, 0), (3, 0, 0))
self.assert_unpack("LAB", "A", 1, (0, 1, 0), (0, 2, 0), (0, 3, 0))
self.assert_unpack("LAB", "B", 1, (0, 0, 1), (0, 0, 2), (0, 0, 3))
def test_HSV(self):
self.assert_unpack("HSV", "HSV", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
self.assert_unpack("HSV", "H", 1, (1, 0, 0), (2, 0, 0), (3, 0, 0))
self.assert_unpack("HSV", "S", 1, (0, 1, 0), (0, 2, 0), (0, 3, 0))
self.assert_unpack("HSV", "V", 1, (0, 0, 1), (0, 0, 2), (0, 0, 3))
def test_I(self):
self.assert_unpack("I", "I;8", 1, 0x01, 0x02, 0x03, 0x04)
self.assert_unpack("I", "I;8S", b"\x01\x83", 1, -125)
self.assert_unpack("I", "I;16", 2, 0x0201, 0x0403)
self.assert_unpack("I", "I;16S", b"\x83\x01\x01\x83", 0x0183, -31999)
self.assert_unpack("I", "I;16B", 2, 0x0102, 0x0304)
self.assert_unpack("I", "I;16BS", b"\x83\x01\x01\x83", -31999, 0x0183)
self.assert_unpack("I", "I;32", 4, 0x04030201, 0x08070605)
self.assert_unpack(
"I", "I;32S", b"\x83\x00\x00\x01\x01\x00\x00\x83", 0x01000083, -2097151999
)
self.assert_unpack("I", "I;32B", 4, 0x01020304, 0x05060708)
self.assert_unpack(
"I", "I;32BS", b"\x83\x00\x00\x01\x01\x00\x00\x83", -2097151999, 0x01000083
)
if sys.byteorder == "little":
self.assert_unpack("I", "I", 4, 0x04030201, 0x08070605)
self.assert_unpack("I", "I;16N", 2, 0x0201, 0x0403)
self.assert_unpack("I", "I;16NS", b"\x83\x01\x01\x83", 0x0183, -31999)
self.assert_unpack("I", "I;32N", 4, 0x04030201, 0x08070605)
self.assert_unpack(
"I",
"I;32NS",
b"\x83\x00\x00\x01\x01\x00\x00\x83",
0x01000083,
-2097151999,
)
else:
self.assert_unpack("I", "I", 4, 0x01020304, 0x05060708)
self.assert_unpack("I", "I;16N", 2, 0x0102, 0x0304)
self.assert_unpack("I", "I;16NS", b"\x83\x01\x01\x83", -31999, 0x0183)
self.assert_unpack("I", "I;32N", 4, 0x01020304, 0x05060708)
self.assert_unpack(
"I",
"I;32NS",
b"\x83\x00\x00\x01\x01\x00\x00\x83",
-2097151999,
0x01000083,
)
def test_F_int(self):
self.assert_unpack("F", "F;8", 1, 0x01, 0x02, 0x03, 0x04)
self.assert_unpack("F", "F;8S", b"\x01\x83", 1, -125)
self.assert_unpack("F", "F;16", 2, 0x0201, 0x0403)
self.assert_unpack("F", "F;16S", b"\x83\x01\x01\x83", 0x0183, -31999)
self.assert_unpack("F", "F;16B", 2, 0x0102, 0x0304)
self.assert_unpack("F", "F;16BS", b"\x83\x01\x01\x83", -31999, 0x0183)
self.assert_unpack("F", "F;32", 4, 67305984, 134678016)
self.assert_unpack(
"F", "F;32S", b"\x83\x00\x00\x01\x01\x00\x00\x83", 16777348, -2097152000
)
self.assert_unpack("F", "F;32B", 4, 0x01020304, 0x05060708)
self.assert_unpack(
"F", "F;32BS", b"\x83\x00\x00\x01\x01\x00\x00\x83", -2097152000, 16777348
)
if sys.byteorder == "little":
self.assert_unpack("F", "F;16N", 2, 0x0201, 0x0403)
self.assert_unpack("F", "F;16NS", b"\x83\x01\x01\x83", 0x0183, -31999)
self.assert_unpack("F", "F;32N", 4, 67305984, 134678016)
self.assert_unpack(
"F",
"F;32NS",
b"\x83\x00\x00\x01\x01\x00\x00\x83",
16777348,
-2097152000,
)
else:
self.assert_unpack("F", "F;16N", 2, 0x0102, 0x0304)
self.assert_unpack("F", "F;16NS", b"\x83\x01\x01\x83", -31999, 0x0183)
self.assert_unpack("F", "F;32N", 4, 0x01020304, 0x05060708)
self.assert_unpack(
"F",
"F;32NS",
b"\x83\x00\x00\x01\x01\x00\x00\x83",
-2097152000,
16777348,
)
def test_F_float(self):
self.assert_unpack(
"F", "F;32F", 4, 1.539989614439558e-36, 4.063216068939723e-34
)
self.assert_unpack(
"F", "F;32BF", 4, 2.387939260590663e-38, 6.301941157072183e-36
)
self.assert_unpack(
"F",
"F;64F",
b"333333\xc3?\x00\x00\x00\x00\x00J\x93\xc0", # by struct.pack
0.15000000596046448,
-1234.5,
)
self.assert_unpack(
"F",
"F;64BF",
b"?\xc3333333\xc0\x93J\x00\x00\x00\x00\x00", # by struct.pack
0.15000000596046448,
-1234.5,
)
if sys.byteorder == "little":
self.assert_unpack(
"F", "F", 4, 1.539989614439558e-36, 4.063216068939723e-34
)
self.assert_unpack(
"F", "F;32NF", 4, 1.539989614439558e-36, 4.063216068939723e-34
)
self.assert_unpack(
"F",
"F;64NF",
b"333333\xc3?\x00\x00\x00\x00\x00J\x93\xc0",
0.15000000596046448,
-1234.5,
)
else:
self.assert_unpack(
"F", "F", 4, 2.387939260590663e-38, 6.301941157072183e-36
)
self.assert_unpack(
"F", "F;32NF", 4, 2.387939260590663e-38, 6.301941157072183e-36
)
self.assert_unpack(
"F",
"F;64NF",
b"?\xc3333333\xc0\x93J\x00\x00\x00\x00\x00",
0.15000000596046448,
-1234.5,
)
def test_I16(self):
self.assert_unpack("I;16", "I;16", 2, 0x0201, 0x0403, 0x0605)
self.assert_unpack("I;16B", "I;16B", 2, 0x0102, 0x0304, 0x0506)
self.assert_unpack("I;16L", "I;16L", 2, 0x0201, 0x0403, 0x0605)
self.assert_unpack("I;16", "I;12", 2, 0x0010, 0x0203, 0x0040)
if sys.byteorder == "little":
self.assert_unpack("I;16", "I;16N", 2, 0x0201, 0x0403, 0x0605)
self.assert_unpack("I;16B", "I;16N", 2, 0x0201, 0x0403, 0x0605)
self.assert_unpack("I;16L", "I;16N", 2, 0x0201, 0x0403, 0x0605)
else:
self.assert_unpack("I;16", "I;16N", 2, 0x0102, 0x0304, 0x0506)
self.assert_unpack("I;16B", "I;16N", 2, 0x0102, 0x0304, 0x0506)
self.assert_unpack("I;16L", "I;16N", 2, 0x0102, 0x0304, 0x0506)
def test_CMYK16(self):
self.assert_unpack("CMYK", "CMYK;16L", 8, (2, 4, 6, 8), (10, 12, 14, 16))
self.assert_unpack("CMYK", "CMYK;16B", 8, (1, 3, 5, 7), (9, 11, 13, 15))
if sys.byteorder == "little":
self.assert_unpack("CMYK", "CMYK;16N", 8, (2, 4, 6, 8), (10, 12, 14, 16))
else:
self.assert_unpack("CMYK", "CMYK;16N", 8, (1, 3, 5, 7), (9, 11, 13, 15))
def test_value_error(self):
with pytest.raises(ValueError):
self.assert_unpack("L", "L", 0, 0)
with pytest.raises(ValueError):
self.assert_unpack("RGB", "RGB", 2, 0)
with pytest.raises(ValueError):
self.assert_unpack("CMYK", "CMYK", 2, 0)
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