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Do not set BitsPerComponent for JPXDecode since it is ignored

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This commit is contained in:
Andrew Murray 2023-08-03 22:05:11 +10:00
parent 022e650d18
commit ddfb7ef14b
1 changed files with 5 additions and 6 deletions
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11
src/PIL/PdfImagePlugin.py
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@ -125,20 +125,19 @@ def _save(im, fp, filename, save_all=False):
# (packbits) or LZWDecode (tiff/lzw compression). Note that
# PDF 1.2 also supports Flatedecode (zip compression).
bits = 8
params = None
decode = None
smaskindata = 0
#
# Get image characteristics
width, height = im.size
dict_obj = {"BitsPerComponent": 8}
if im.mode == "1":
if features.check("libtiff"):
filter = "CCITTFaxDecode"
bits = 1
dict_obj["BitsPerComponent"] = 1
params = PdfParser.PdfArray(
[
PdfParser.PdfDict(
@ -178,7 +177,7 @@ def _save(im, fp, filename, save_all=False):
filter = "JPXDecode"
colorspace = PdfParser.PdfName("DeviceRGB")
procset = "ImageC" # color images
smaskindata = 1
dict_obj["SMaskInData"] = 1
elif im.mode == "CMYK":
filter = "DCTDecode"
colorspace = PdfParser.PdfName("DeviceCMYK")
@ -206,6 +205,7 @@ def _save(im, fp, filename, save_all=False):
elif filter == "DCTDecode":
Image.SAVE["JPEG"](im, op, filename)
elif filter == "JPXDecode":
del dict_obj["BitsPerComponent"]
Image.SAVE["JPEG2000"](im, op, filename)
elif filter == "FlateDecode":
ImageFile._save(im, op, [("zip", (0, 0) + im.size, 0, im.mode)])
@ -230,11 +230,10 @@ def _save(im, fp, filename, save_all=False):
Width=width, # * 72.0 / x_resolution,
Height=height, # * 72.0 / y_resolution,
Filter=filter,
BitsPerComponent=bits,
Decode=decode,
DecodeParms=params,
ColorSpace=colorspace,
SMaskInData=smaskindata,
**dict_obj,
)
#