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optimize: fix error on missing /Filter

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This commit is contained in:
James R. Barlow 2018-04-17 23:27:56 -07:00
parent 9a60694cfc
commit a5942209e8
1 changed files with 8 additions and 8 deletions
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16
src/ocrmypdf/_optimize.py
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@ -43,8 +43,8 @@ def generate_ccitt_header(data, w, h, decode_parms):
if decode_parms.get("/K", 1) < 0:
ccitt_group = 4 # Pure two-dimensional encoding (Group 4)
else:
ccitt_group = 3
else:
ccitt_group = 3
img_size = len(data)
tiff_header_struct = '<' + '2s' + 'H' + 'L' + 'H' + 'HHLL' * 8 + 'L'
@ -93,15 +93,15 @@ def extract_images(doc, pike, root, log):
continue # Don't improve same image twice
bpc = image.get('/BitsPerComponent', 8)
filt = image.get('/Filter', [])
filt = image.get('/Filter', pikepdf.Array([]))
cs = image.get('/ColorSpace', '')
w = int(image.Width)
h = int(image.Height)
if filt.type_code == pikepdf.ObjectType.array:
if len(filt) == 1:
filt = filt[0]
else:
continue # Not supported: multiple filters
if len(filt) == 1:
filt = filt[0]
else:
log.debug("Skipping multiply filtered {}".format(filt))
continue # Not supported: multiple filters
if bpc == 1 and filt != '/JBIG2Decode':
decode_parms = image.get('/DecodeParms')
if filt == '/CCITTFaxDecode':