def read_mk(fobj, start_length, size):
# Alpha masks seem to be uncompressed
start = start_length[0]
fobj.seek(start)
pixel_size = (size[0] * size[2], size[1] * size[2])
sizesq = pixel_size[0] * pixel_size[1]
band = Image.frombuffer("L", pixel_size, fobj.read(sizesq), "raw", "L", 0,
1)
return {"A": band}
def read_32(fobj, start_length, size):
"""
Read a 32bit RGB icon resource. Seems to be either uncompressed or
an RLE packbits-like scheme.
"""
(start, length) = start_length
fobj.seek(start)
pixel_size = (size[0] * size[2], size[1] * size[2])
sizesq = pixel_size[0] * pixel_size[1]
if length == sizesq * 3:
# uncompressed ("RGBRGBGB")
indata = fobj.read(length)
im = Image.frombuffer("RGB", pixel_size, indata, "raw", "RGB", 0, 1)
else:
# decode image
im = Image.new("RGB", pixel_size, None)
for band_ix in range(3):
data = []
bytesleft = sizesq
while bytesleft > 0:
byte = fobj.read(1)
if not byte:
break
byte = i8(byte)
if byte & 0x80:
blocksize = byte - 125
byte = fobj.read(1)
for i in range(blocksize):
data.append(byte)
else:
blocksize = byte + 1
data.append(fobj.read(blocksize))
bytesleft -= blocksize
if bytesleft <= 0:
break
if bytesleft != 0:
raise SyntaxError("Error reading channel [%r left]" %
bytesleft)
band = Image.frombuffer("L", pixel_size, b"".join(data), "raw",
"L", 0, 1)
im.im.putband(band.im, band_ix)
return {"RGB": im}
