forked from josch/img2pdf
support file objects as input
This commit is contained in:
josch
parent
18ca3b4491
commit
3fdd824201
7 changed files with 83 additions and 95 deletions
158
src/img2pdf.py
158
src/img2pdf.py
|
|
@ -24,6 +24,10 @@ import struct
|
|||
from PIL import Image
|
||||
from datetime import datetime
|
||||
from jp2 import parsejp2
|
||||
try:
|
||||
from cStringIO import cStringIO
|
||||
except ImportError:
|
||||
from io import BytesIO as cStringIO
|
||||
|
||||
# XXX: Switch to use logging module.
|
||||
def debug_out(message, verbose=True):
|
||||
|
|
@ -214,85 +218,89 @@ def convert(images, dpi=None, x=None, y=None, title=None, author=None,
|
|||
|
||||
for imfilename in images:
|
||||
debug_out("Reading %s"%imfilename, verbose)
|
||||
with open(imfilename, "rb") as im:
|
||||
rawdata = im.read()
|
||||
im.seek(0)
|
||||
try:
|
||||
imgdata = Image.open(im)
|
||||
except IOError as e:
|
||||
# test if it is a jpeg2000 image
|
||||
if rawdata[:12] != "\x00\x00\x00\x0C\x6A\x50\x20\x20\x0D\x0A\x87\x0A":
|
||||
error_out("cannot read input image (not jpeg2000)")
|
||||
error_out("PIL: %s"%e)
|
||||
exit(1)
|
||||
# image is jpeg2000
|
||||
width, height, ics = parsejp2(rawdata)
|
||||
imgformat = "JPEG2000"
|
||||
try:
|
||||
rawdata = imfilename.read()
|
||||
im = cStringIO(rawdata)
|
||||
except:
|
||||
with open(imfilename, "rb") as im:
|
||||
rawdata = im.read()
|
||||
im = cStringIO(rawdata)
|
||||
try:
|
||||
imgdata = Image.open(im)
|
||||
except IOError as e:
|
||||
# test if it is a jpeg2000 image
|
||||
if rawdata[:12] != "\x00\x00\x00\x0C\x6A\x50\x20\x20\x0D\x0A\x87\x0A":
|
||||
error_out("cannot read input image (not jpeg2000)")
|
||||
error_out("PIL: %s"%e)
|
||||
exit(1)
|
||||
# image is jpeg2000
|
||||
width, height, ics = parsejp2(rawdata)
|
||||
imgformat = "JPEG2000"
|
||||
|
||||
if dpi:
|
||||
ndpi = dpi, dpi
|
||||
debug_out("input dpi (forced) = %d x %d"%ndpi, verbose)
|
||||
else:
|
||||
ndpi = (96, 96) # TODO: read real dpi
|
||||
debug_out("input dpi = %d x %d"%ndpi, verbose)
|
||||
|
||||
if colorspace:
|
||||
color = colorspace
|
||||
debug_out("input colorspace (forced) = %s"%(ics))
|
||||
else:
|
||||
color = ics
|
||||
debug_out("input colorspace = %s"%(ics), verbose)
|
||||
if dpi:
|
||||
ndpi = dpi, dpi
|
||||
debug_out("input dpi (forced) = %d x %d"%ndpi, verbose)
|
||||
else:
|
||||
width, height = imgdata.size
|
||||
imgformat = imgdata.format
|
||||
ndpi = (96, 96) # TODO: read real dpi
|
||||
debug_out("input dpi = %d x %d"%ndpi, verbose)
|
||||
|
||||
if dpi:
|
||||
ndpi = dpi, dpi
|
||||
debug_out("input dpi (forced) = %d x %d"%ndpi, verbose)
|
||||
else:
|
||||
ndpi = imgdata.info.get("dpi", (96, 96))
|
||||
debug_out("input dpi = %d x %d"%ndpi, verbose)
|
||||
|
||||
if colorspace:
|
||||
color = colorspace
|
||||
debug_out("input colorspace (forced) = %s"%(color), verbose)
|
||||
else:
|
||||
color = imgdata.mode
|
||||
if color == "CMYK" and imgformat == "JPEG":
|
||||
# Adobe inverts CMYK JPEGs for some reason, and others
|
||||
# have followed suit as well. Some software assumes the
|
||||
# JPEG is inverted if the Adobe tag (APP14), while other
|
||||
# software assumes all CMYK JPEGs are inverted. I don't
|
||||
# have enough experience with these to know which is
|
||||
# better for images currently in the wild, so I'm going
|
||||
# with the first approach for now.
|
||||
if "adobe" in imgdata.info:
|
||||
color = "CMYK;I"
|
||||
debug_out("input colorspace = %s"%(color), verbose)
|
||||
|
||||
debug_out("width x height = %d x %d"%(width,height), verbose)
|
||||
debug_out("imgformat = %s"%imgformat, verbose)
|
||||
|
||||
# depending on the input format, determine whether to pass the raw
|
||||
# image or the zlib compressed color information
|
||||
if imgformat is "JPEG" or imgformat is "JPEG2000":
|
||||
if color == '1':
|
||||
error_out("jpeg can't be monochrome")
|
||||
exit(1)
|
||||
imgdata = rawdata
|
||||
if colorspace:
|
||||
color = colorspace
|
||||
debug_out("input colorspace (forced) = %s"%(ics))
|
||||
else:
|
||||
# because we do not support /CCITTFaxDecode
|
||||
if color == '1':
|
||||
debug_out("Converting colorspace 1 to L", verbose)
|
||||
imgdata = imgdata.convert('L')
|
||||
color = 'L'
|
||||
elif color in ("RGB", "L", "CMYK", "CMYK;I"):
|
||||
debug_out("Colorspace is OK: %s"%color, verbose)
|
||||
else:
|
||||
debug_out("Converting colorspace %s to RGB"%color, verbose)
|
||||
imgdata = imgdata.convert('RGB')
|
||||
color = imgdata.mode
|
||||
imgdata = zlib.compress(imgdata.tostring())
|
||||
color = ics
|
||||
debug_out("input colorspace = %s"%(ics), verbose)
|
||||
else:
|
||||
width, height = imgdata.size
|
||||
imgformat = imgdata.format
|
||||
|
||||
if dpi:
|
||||
ndpi = dpi, dpi
|
||||
debug_out("input dpi (forced) = %d x %d"%ndpi, verbose)
|
||||
else:
|
||||
ndpi = imgdata.info.get("dpi", (96, 96))
|
||||
debug_out("input dpi = %d x %d"%ndpi, verbose)
|
||||
|
||||
if colorspace:
|
||||
color = colorspace
|
||||
debug_out("input colorspace (forced) = %s"%(color), verbose)
|
||||
else:
|
||||
color = imgdata.mode
|
||||
if color == "CMYK" and imgformat == "JPEG":
|
||||
# Adobe inverts CMYK JPEGs for some reason, and others
|
||||
# have followed suit as well. Some software assumes the
|
||||
# JPEG is inverted if the Adobe tag (APP14), while other
|
||||
# software assumes all CMYK JPEGs are inverted. I don't
|
||||
# have enough experience with these to know which is
|
||||
# better for images currently in the wild, so I'm going
|
||||
# with the first approach for now.
|
||||
if "adobe" in imgdata.info:
|
||||
color = "CMYK;I"
|
||||
debug_out("input colorspace = %s"%(color), verbose)
|
||||
|
||||
debug_out("width x height = %d x %d"%(width,height), verbose)
|
||||
debug_out("imgformat = %s"%imgformat, verbose)
|
||||
|
||||
# depending on the input format, determine whether to pass the raw
|
||||
# image or the zlib compressed color information
|
||||
if imgformat is "JPEG" or imgformat is "JPEG2000":
|
||||
if color == '1':
|
||||
error_out("jpeg can't be monochrome")
|
||||
exit(1)
|
||||
imgdata = rawdata
|
||||
else:
|
||||
# because we do not support /CCITTFaxDecode
|
||||
if color == '1':
|
||||
debug_out("Converting colorspace 1 to L", verbose)
|
||||
imgdata = imgdata.convert('L')
|
||||
color = 'L'
|
||||
elif color in ("RGB", "L", "CMYK", "CMYK;I"):
|
||||
debug_out("Colorspace is OK: %s"%color, verbose)
|
||||
else:
|
||||
debug_out("Converting colorspace %s to RGB"%color, verbose)
|
||||
imgdata = imgdata.convert('RGB')
|
||||
color = imgdata.mode
|
||||
imgdata = zlib.compress(imgdata.tostring())
|
||||
|
||||
# pdf units = 1/72 inch
|
||||
if not x and not y:
|
||||
|
|
|
|||
|
Before Width: | Height: | Size: 4.7 KiB After Width: | Height: | Size: 4.7 KiB |
|
Before Width: | Height: | Size: 2.3 KiB After Width: | Height: | Size: 2.3 KiB |
|
Before Width: | Height: | Size: 1.1 KiB After Width: | Height: | Size: 1.1 KiB |
Binary file not shown.
|
|
@ -1,20 +0,0 @@
|
|||
import datetime
|
||||
import os
|
||||
import unittest
|
||||
import img2pdf
|
||||
|
||||
HERE = os.path.dirname(__file__)
|
||||
moddate = datetime.datetime(2014, 1, 1)
|
||||
|
||||
class TestImg2Pdf(unittest.TestCase):
|
||||
def test_jpg2pdf(self):
|
||||
with open(os.path.join(HERE, 'test.jpg'), 'r') as img_fp:
|
||||
with open(os.path.join(HERE, 'test.pdf'), 'r') as pdf_fp:
|
||||
self.assertEqual(
|
||||
img2pdf.convert([img_fp], 150,
|
||||
creationdate=moddate, moddate=moddate),
|
||||
pdf_fp.read())
|
||||
|
||||
def test_png2pdf(self):
|
||||
with open(os.path.join(HERE, 'test.png'), 'r') as img_fp:
|
||||
self.assertRaises(SystemExit, img2pdf.convert, [img_fp], 150)
|
||||
Loading…
Reference in a new issue