josch/img2pdf
3
6
Fork 10
Code Issues 22 Pull requests 5 Projects Releases 3 Wiki Activity

release version 0.2.0 - big rewrite and lots of new features

Browse source 
- now Python3 only
 - pep8 compliant code
 - update my email to josch@mister-muffin.de
 - move from github to gitlab.mister-muffin.de/josch/img2pdf
 - use logging module
 - add extensive test suite
 - ability to read from standard input
 - pdf writer:
      - make more compatible with the interface of pdfrw module
      - print floats which equal to their integer conversion as integer
      - do not print trailing zeroes for floating point numbers
      - print more linebreaks
      - add binary string at beginning of PDF to indicate that the PDF
        contains binary data
      - handle datetime and unicode strings by using utf-16-be encoding
 - new options (see --help for more details):
      - --without-pdfrw
      - --imgsize
      - --border
      - --fit
      - --auto-orient
      - --viewer-panes
      - --viewer-initial-page
      - --viewer-magnification
      - --viewer-page-layout
      - --viewer-fit-window
      - --viewer-center-window
      - --viewer-fullscreen
 - remove short command line options for metadata arguments
This commit is contained in:
josch 2015-05-10 14:35:09 +02:00 committed by Johannes 'josch' Schauer
parent 02fad70e4b
commit 251238b410
10 changed files with 1973 additions and 685 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

36
CHANGES.rst
View file

@ -2,11 +2,38 @@
CHANGES
=======
0.1.6
0.2.0
-----
- replace -x and -y option by combined option -s (or --pagesize) and use -S
for --subject
- now Python3 only
- pep8 compliant code
- update my email to josch@mister-muffin.de
- move from github to gitlab.mister-muffin.de/josch/img2pdf
- use logging module
- add extensive test suite
- ability to read from standard input
- pdf writer:
- make more compatible with the interface of pdfrw module
- print floats which equal to their integer conversion as integer
- do not print trailing zeroes for floating point numbers
- print more linebreaks
- add binary string at beginning of PDF to indicate that the PDF
contains binary data
- handle datetime and unicode strings by using utf-16-be encoding
- new options (see --help for more details):
- --without-pdfrw
- --imgsize
- --border
- --fit
- --auto-orient
- --viewer-panes
- --viewer-initial-page
- --viewer-magnification
- --viewer-page-layout
- --viewer-fit-window
- --viewer-center-window
- --viewer-fullscreen
- remove short options for metadata command line arguments
- correctly encode and escape non-ascii metadata
- explicitly store date in UTC and allow parsing all date formats understood
by dateutil and `date --date`
@ -42,9 +69,6 @@ CHANGES
------------------
- Initial PyPI release.
- Modified code to create proper package.
- Added tests.
- Added console script entry point.

112
README.md
View file

@ -1,31 +1,35 @@
img2pdf
=======
Losslessly convert images to PDF without unnecessarily re-encoding JPEG and
JPEG2000 files. Image quality is retained without unnecessarily increasing
file size.
Losslessly convert raster images to PDF. The file size will not unnecessarily
increase. One major application would be a number of scans made in JPEG format
which should now become part of a single PDF document. Existing solutions
would either re-encode the input JPEG files (leading to quality loss) or store
them in the zip/flate format which results into the PDF becoming unnecessarily
large in terms of its file size.
Background
----------
Quality loss can be avoided when converting JPEG and JPEG2000 images to
PDF by embedding them without re-encoding. I wrote this piece of python code.
because I was missing a tool to do this automatically.
Quality loss can be avoided when converting JPEG and JPEG2000 images to PDF by
embedding them without re-encoding. I wrote this piece of python code.
because I was missing a tool to do this automatically. Img2pdf basically just
wraps JPEG images into the PDF container as they are.
If you know how to embed JPEG and JPEG2000 images into a PDF container without
recompression, using existing tools, please contact me so that I can put this
code into the garbage bin :D
If you know an existing tool which allows one to embed JPEG and JPEG2000 images
into a PDF container without recompression, please contact me so that I can put
this code into the garbage bin.
Functionality
-------------
This program will take a list of images and produce a PDF file with the images
embedded in it. JPEG and JPEG2000 images will be included without
recompression. Images in other formats will be included with zip/flate
recompression. Raster images in other formats will be included with zip/flate
encoding which usually leads to an increase in the resulting size because
formats like png compress better than PDF which just zip/flate compresses the
RGB data. As a result, this tool is able to losslessly wrap images into a PDF
container with a quality-filesize ratio that is typically better (in case of
container with a quality to filesize ratio that is typically better (in case of
JPEG and JPEG2000 images) or equal (in case of other formats) than that of
existing tools.
@ -50,75 +54,26 @@ than the input JPEG or JPEG2000 file.
img2pdf is able to losslessly embed JPEG and JPEG2000 files into a PDF
container without additional overhead (aside from the PDF structure itself),
save other graphics formats using lossless zip compression,
and produce multi-page PDF files when more than one input image is given.
Also, since JPEG and JPEG2000 images are not reencoded, conversion with
img2pdf is several times faster than with other tools.
save other graphics formats using lossless zip compression, and produce
multi-page PDF files when more than one input image is given.
Also, since JPEG and JPEG2000 images are not reencoded, conversion with img2pdf
is several times faster than with other tools.
Usage
-----
#### General Notes
The images must be provided as files because img2pdf needs to seek in the file
descriptor.
The images must be provided as files because img2pdf needs to seek
in the file descriptor. Input cannot be piped through stdin.
If no output file is specified with the `-o`/`--output` option, output will be
done to stdout.
If no output file is specified with the `-o`/`--output` option,
output will be to stdout.
Descriptions of the options should be self explanatory.
They are available by running:
The detailed documentation can be accessed by running:
img2pdf --help
#### Controlling Page Size
The PDF page size can be manipulated. By default, the image will be sized "into" the given dimensions with the aspect ratio retained. For instance, to size an image into a page that is at most 500pt x 500pt, use:
img2pdf -s 500x500 -o output.pdf input.jpg
To "fill" out a page that is at least 500pt x 500pt, follow the dimensions with a `^`:
img2pdf -s 500x500^ -o output.pdf input.jpg
To output pages that are exactly 500pt x 500pt, follow the dimensions with an `!`:
img2pdf -s 500x500\! -o output.pdf input.jpg
Notice that the default unit is points. Units may be also be specified and mixed:
img2pdf -s 8.5inx27.94cm -o output.pdf input.jpg
If either width or height is omitted, the other will be calculated
to preserve aspect ratio.
img2pdf -s x280mm -o output1.pdf input.jpg
img2pdf -s 280mmx -o output2.pdf input.jpg
Some standard page sizes are recognized:
img2pdf -s letter -o output1.pdf input.jpg
img2pdf -s a4 -o output2.pdf input.jpg
#### Colorspace
Currently, the colorspace must be forced for JPEG 2000 images that are
not in the RGB colorspace. Available colorspace options are based on
Python Imaging Library (PIL) short handles.
* `RGB` = RGB color
* `L` = Grayscale
* `1` = Black and white (internally converted to grayscale)
* `CMYK` = CMYK color
* `CMYK;I` = CMYK color with inversion
For example, to encode a grayscale JPEG2000 image, use:
img2pdf -C L -o output.pdf input.jp2
Bugs
----
@ -135,20 +90,17 @@ outperformed by another lossless compression method, contact me.
I have not yet figured out how to determine the colorspace of JPEG2000 files.
Therefore JPEG2000 files use DeviceRGB by default. For JPEG2000 files with
other colorspaces, you must force it using the `--colorspace` option.
other colorspaces, you must explicitly specify it using the `--colorspace`
option.
It might be possible to store transparency using masks but it is not clear
what the utility of such a functionality would be.
Most vector graphic formats can be losslessly turned into PDF (minus some of
the features unsupported by PDF) but img2pdf will currently turn vector
graphics into their lossy raster representations.
Acrobat is able to store a hint for the PDF reader of how to present the PDF
when opening it. Things like automatic fullscreen or the zoom level can be
configured.
It would be nice if a single input image could be read from standard input.
graphics into their lossy raster representations. For converting raster
graphics to PDF, use another tool like inkscape and then join the resulting
pages with a tool like pdftk.
A configuration file could be used for default options.
@ -158,10 +110,6 @@ Installation
On a Debian- and Ubuntu-based systems, dependencies may be installed
with the following command:
apt-get install python python-pil python-setuptools
Or for Python 3:
apt-get install python3 python3-pil python3-setuptools
You can then install the package using:
@ -187,7 +135,7 @@ You can then test the converter using:
The package can also be used as a library:
import img2pdf
pdf_bytes = img2pdf.convert(['test.jpg'])
pdf_bytes = img2pdf.convert('test.jpg')
file = open("name.pdf","wb")
file.write(pdf_bytes)

40
setup.py
View file

@ -1,37 +1,37 @@
from setuptools import setup
VERSION="0.1.6~git"
VERSION = "0.2"
setup (
setup(
name='img2pdf',
version=VERSION,
author = "Johannes 'josch' Schauer",
author_email = 'j.schauer@email.de',
description = "Convert images to PDF via direct JPEG inclusion.",
long_description = open('README.md').read(),
license = "LGPL",
keywords = "jpeg pdf converter",
classifiers = [
'Development Status :: 4 - Beta',
author="Johannes 'josch' Schauer",
author_email='josch@mister-muffin.de',
description="Convert images to PDF via direct JPEG inclusion.",
long_description=open('README.md').read(),
license="LGPL",
keywords="jpeg pdf converter",
classifiers=[
'Development Status :: 5 - Production/Stable',
'Intended Audience :: Developers',
'Intended Audience :: Other Audience',
'Environment :: Console',
'Programming Language :: Python',
'Programming Language :: Python :: 2',
'Programming Language :: Python :: 2.6',
'Programming Language :: Python :: 2.7',
'Programming Language :: Python :: 3',
'Programming Language :: Python :: 3.4',
'Programming Language :: Python :: Implementation :: CPython',
'License :: OSI Approved :: GNU Lesser General Public License v3 (LGPLv3)',
'Programming Language :: Python',
'License :: OSI Approved :: GNU Lesser General Public License v3 '
'(LGPLv3)',
'Natural Language :: English',
'Operating System :: OS Independent'],
url = 'https://github.com/josch/img2pdf',
download_url = 'https://github.com/josch/img2pdf/archive/'+VERSION+'.tar.gz',
url='https://gitlab.mister-muffin.de/josch/img2pdf',
download_url='https://gitlab.mister-muffin.de/josch/img2pdf/repository/'
'archive.tar.gz?ref=' + VERSION,
package_dir={"": "src"},
py_modules=['img2pdf', 'jp2'],
include_package_data = True,
test_suite = 'tests.test_suite',
zip_safe = True,
include_package_data=True,
test_suite='tests.test_suite',
zip_safe=True,
install_requires=(
'Pillow',
),

1874
src/img2pdf.py
View file

File diff suppressed because it is too large Load diff

32
src/jp2.py
View file

@ -21,6 +21,7 @@
import struct
def getBox(data, byteStart, noBytes):
boxLengthValue = struct.unpack(">I", data[byteStart:byteStart+4])[0]
boxType = data[byteStart+4:byteStart+8]
@ -34,11 +35,13 @@ def getBox(data, byteStart, noBytes):
boxContents = data[byteStart+contentsStartOffset:byteEnd]
return (boxLengthValue, boxType, byteEnd, boxContents)
def parse_ihdr(data):
height = struct.unpack(">I", data[0:4])[0]
width = struct.unpack(">I", data[4:8])[0]
return width, height
def parse_colr(data):
meth = struct.unpack(">B", data[0:1])[0]
if meth != 1:
@ -49,15 +52,18 @@ def parse_colr(data):
elif enumCS == 17:
return "L"
else:
raise Exception("only sRGB and greyscale color space is supported, got %d"%enumCS)
raise Exception("only sRGB and greyscale color space is supported, "
"got %d" % enumCS)
def parse_jp2h(data):
width, height, colorspace = None, None, None
noBytes=len(data)
byteStart=0
boxLengthValue=1 # dummy value for while loop condition
noBytes = len(data)
byteStart = 0
boxLengthValue = 1 # dummy value for while loop condition
while byteStart < noBytes and boxLengthValue != 0:
boxLengthValue, boxType, byteEnd, boxContents = getBox(data, byteStart, noBytes)
boxLengthValue, boxType, byteEnd, boxContents = \
getBox(data, byteStart, noBytes)
if boxType == 'ihdr':
width, height = parse_ihdr(boxContents)
elif boxType == 'colr':
@ -65,12 +71,14 @@ def parse_jp2h(data):
byteStart = byteEnd
return (width, height, colorspace)
def parsejp2(data):
noBytes=len(data)
byteStart=0
boxLengthValue=1 # dummy value for while loop condition
noBytes = len(data)
byteStart = 0
boxLengthValue = 1 # dummy value for while loop condition
while byteStart < noBytes and boxLengthValue != 0:
boxLengthValue, boxType, byteEnd, boxContents = getBox(data, byteStart, noBytes)
boxLengthValue, boxType, byteEnd, boxContents = \
getBox(data, byteStart, noBytes)
if boxType == 'jp2h':
width, height, colorspace = parse_jp2h(boxContents)
byteStart = byteEnd
@ -85,6 +93,6 @@ def parsejp2(data):
if __name__ == "__main__":
import sys
width, height, colorspace = parsejp2(open(sys.argv[1]).read())
sys.stdout.write("width = %d"%width)
sys.stdout.write("height = %d"%height)
sys.stdout.write("colorspace = %s"%colorspace)
sys.stdout.write("width = %d" % width)
sys.stdout.write("height = %d" % height)
sys.stdout.write("colorspace = %s" % colorspace)

564
src/tests/__init__.py
View file

@ -7,102 +7,550 @@ from PIL import Image
HERE = os.path.dirname(__file__)
#convert +set date:create +set date:modify -define png:exclude-chunk=time
# convert +set date:create +set date:modify -define png:exclude-chunk=time
# we define some variables so that the table below can be narrower
psl = (972, 504) # --pagesize landscape
psp = (504, 972) # --pagesize portrait
isl = (756, 324) # --imgsize landscape
isp = (324, 756) # --imgsize portrait
border = (162, 270) # --border
# there is no need to have test cases with the same images with inverted
# orientation (landscape/portrait) because --pagesize and --imgsize are
# already inverted
im1 = (864, 288) # imgpx #1 => 648x216
im2 = (1152, 576) # imgpx #2 => 864x432
# shortcuts for fit modes
f_into = img2pdf.FitMode.into
f_fill = img2pdf.FitMode.fill
f_exact = img2pdf.FitMode.exact
f_shrink = img2pdf.FitMode.shrink
f_enlarge = img2pdf.FitMode.enlarge
layout_test_cases = [
# psp=972x504, psl=504x972, isl=756x324, isp=324x756, border=162:270
# --pagesize --border -a pagepdf imgpdf
# --imgsize --fit
(None, None, None, f_into, 0, (648, 216), (648, 216), # 000
(864, 432), (864, 432)),
(None, None, None, f_into, 1, (648, 216), (648, 216), # 001
(864, 432), (864, 432)),
(None, None, None, f_fill, 0, (648, 216), (648, 216), # 002
(864, 432), (864, 432)),
(None, None, None, f_fill, 1, (648, 216), (648, 216), # 003
(864, 432), (864, 432)),
(None, None, None, f_exact, 0, (648, 216), (648, 216), # 004
(864, 432), (864, 432)),
(None, None, None, f_exact, 1, (648, 216), (648, 216), # 005
(864, 432), (864, 432)),
(None, None, None, f_shrink, 0, (648, 216), (648, 216), # 006
(864, 432), (864, 432)),
(None, None, None, f_shrink, 1, (648, 216), (648, 216), # 007
(864, 432), (864, 432)),
(None, None, None, f_enlarge, 0, (648, 216), (648, 216), # 008
(864, 432), (864, 432)),
(None, None, None, f_enlarge, 1, (648, 216), (648, 216), # 009
(864, 432), (864, 432)),
(None, None, border, f_into, 0, (1188, 540), (648, 216), # 010
(1404, 756), (864, 432)),
(None, None, border, f_into, 1, (1188, 540), (648, 216), # 011
(1404, 756), (864, 432)),
(None, None, border, f_fill, 0, (1188, 540), (648, 216), # 012
(1404, 756), (864, 432)),
(None, None, border, f_fill, 1, (1188, 540), (648, 216), # 013
(1404, 756), (864, 432)),
(None, None, border, f_exact, 0, (1188, 540), (648, 216), # 014
(1404, 756), (864, 432)),
(None, None, border, f_exact, 1, (1188, 540), (648, 216), # 015
(1404, 756), (864, 432)),
(None, None, border, f_shrink, 0, (1188, 540), (648, 216), # 016
(1404, 756), (864, 432)),
(None, None, border, f_shrink, 1, (1188, 540), (648, 216), # 017
(1404, 756), (864, 432)),
(None, None, border, f_enlarge, 0, (1188, 540), (648, 216), # 018
(1404, 756), (864, 432)),
(None, None, border, f_enlarge, 1, (1188, 540), (648, 216), # 019
(1404, 756), (864, 432)),
(None, isp, None, f_into, 0, (324, 108), (324, 108), # 020
(324, 162), (324, 162)),
(None, isp, None, f_into, 1, (324, 108), (324, 108), # 021
(324, 162), (324, 162)),
(None, isp, None, f_fill, 0, (2268, 756), (2268, 756), # 022
(1512, 756), (1512, 756)),
(None, isp, None, f_fill, 1, (2268, 756), (2268, 756), # 023
(1512, 756), (1512, 756)),
(None, isp, None, f_exact, 0, (324, 756), (324, 756), # 024
(324, 756), (324, 756)),
(None, isp, None, f_exact, 1, (324, 756), (324, 756), # 025
(324, 756), (324, 756)),
(None, isp, None, f_shrink, 0, (324, 108), (324, 108), # 026
(324, 162), (324, 162)),
(None, isp, None, f_shrink, 1, (324, 108), (324, 108), # 027
(324, 162), (324, 162)),
(None, isp, None, f_enlarge, 0, (648, 216), (648, 216), # 028
(864, 432), (864, 432)),
(None, isp, None, f_enlarge, 1, (648, 216), (648, 216), # 029
(864, 432), (864, 432)),
(None, isp, border, f_into, 0, (864, 432), (324, 108), # 030
(864, 486), (324, 162)),
(None, isp, border, f_into, 1, (864, 432), (324, 108), # 031
(864, 486), (324, 162)),
(None, isp, border, f_fill, 0, (2808, 1080), (2268, 756), # 032
(2052, 1080), (1512, 756)),
(None, isp, border, f_fill, 1, (2808, 1080), (2268, 756), # 033
(2052, 1080), (1512, 756)),
(None, isp, border, f_exact, 0, (864, 1080), (324, 756), # 034
(864, 1080), (324, 756)),
(None, isp, border, f_exact, 1, (864, 1080), (324, 756), # 035
(864, 1080), (324, 756)),
(None, isp, border, f_shrink, 0, (864, 432), (324, 108), # 036
(864, 486), (324, 162)),
(None, isp, border, f_shrink, 1, (864, 432), (324, 108), # 037
(864, 486), (324, 162)),
(None, isp, border, f_enlarge, 0, (1188, 540), (648, 216), # 038
(1404, 756), (864, 432)),
(None, isp, border, f_enlarge, 1, (1188, 540), (648, 216), # 039
(1404, 756), (864, 432)),
(None, isl, None, f_into, 0, (756, 252), (756, 252), # 040
(648, 324), (648, 324)),
(None, isl, None, f_into, 1, (756, 252), (756, 252), # 041
(648, 324), (648, 324)),
(None, isl, None, f_fill, 0, (972, 324), (972, 324), # 042
(756, 378), (756, 378)),
(None, isl, None, f_fill, 1, (972, 324), (972, 324), # 043
(756, 378), (756, 378)),
(None, isl, None, f_exact, 0, (756, 324), (756, 324), # 044
(756, 324), (756, 324)),
(None, isl, None, f_exact, 1, (756, 324), (756, 324), # 045
(756, 324), (756, 324)),
(None, isl, None, f_shrink, 0, (648, 216), (648, 216), # 046
(648, 324), (648, 324)),
(None, isl, None, f_shrink, 1, (648, 216), (648, 216), # 047
(648, 324), (648, 324)),
(None, isl, None, f_enlarge, 0, (756, 252), (756, 252), # 048
(864, 432), (864, 432)),
(None, isl, None, f_enlarge, 1, (756, 252), (756, 252), # 049
(864, 432), (864, 432)),
# psp=972x504, psp=504x972, isl=756x324, isp=324x756, border=162:270
# --pagesize --border -a pagepdf imgpdf
# --imgsize --fit imgpx
(None, isl, border, f_into, 0, (1296, 576), (756, 252), # 050
(1188, 648), (648, 324)),
(None, isl, border, f_into, 1, (1296, 576), (756, 252), # 051
(1188, 648), (648, 324)),
(None, isl, border, f_fill, 0, (1512, 648), (972, 324), # 052
(1296, 702), (756, 378)),
(None, isl, border, f_fill, 1, (1512, 648), (972, 324), # 053
(1296, 702), (756, 378)),
(None, isl, border, f_exact, 0, (1296, 648), (756, 324), # 054
(1296, 648), (756, 324)),
(None, isl, border, f_exact, 1, (1296, 648), (756, 324), # 055
(1296, 648), (756, 324)),
(None, isl, border, f_shrink, 0, (1188, 540), (648, 216), # 056
(1188, 648), (648, 324)),
(None, isl, border, f_shrink, 1, (1188, 540), (648, 216), # 057
(1188, 648), (648, 324)),
(None, isl, border, f_enlarge, 0, (1296, 576), (756, 252), # 058
(1404, 756), (864, 432)),
(None, isl, border, f_enlarge, 1, (1296, 576), (756, 252), # 059
(1404, 756), (864, 432)),
(psp, None, None, f_into, 0, (504, 972), (504, 168), # 060
(504, 972), (504, 252)),
(psp, None, None, f_into, 1, (972, 504), (972, 324), # 061
(972, 504), (972, 486)),
(psp, None, None, f_fill, 0, (504, 972), (2916, 972), # 062
(504, 972), (1944, 972)),
(psp, None, None, f_fill, 1, (972, 504), (1512, 504), # 063
(972, 504), (1008, 504)),
(psp, None, None, f_exact, 0, (504, 972), (504, 972), # 064
(504, 972), (504, 972)),
(psp, None, None, f_exact, 1, (972, 504), (972, 504), # 065
(972, 504), (972, 504)),
(psp, None, None, f_shrink, 0, (504, 972), (504, 168), # 066
(504, 972), (504, 252)),
(psp, None, None, f_shrink, 1, (972, 504), (648, 216), # 067
(972, 504), (864, 432)),
(psp, None, None, f_enlarge, 0, (504, 972), (648, 216), # 068
(504, 972), (864, 432)),
(psp, None, None, f_enlarge, 1, (972, 504), (972, 324), # 069
(972, 504), (972, 486)),
(psp, None, border, f_into, 0, (504, 972), (180, 60), # 070
(504, 972), (180, 90)),
(psp, None, border, f_into, 1, (972, 504), (432, 144), # 071
(972, 504), (360, 180)),
(psp, None, border, f_fill, 0, (504, 972), (1296, 432), # 072
(504, 972), (864, 432)),
(psp, None, border, f_fill, 1, (972, 504), (540, 180), # 073
(972, 504), (432, 216)),
(psp, None, border, f_exact, 0, (504, 972), (180, 432), # 074
(504, 972), (180, 432)),
(psp, None, border, f_exact, 1, (972, 504), (432, 180), # 075
(972, 504), (432, 180)),
(psp, None, border, f_shrink, 0, (504, 972), (180, 60), # 076
(504, 972), (180, 90)),
(psp, None, border, f_shrink, 1, (972, 504), (432, 144), # 077
(972, 504), (360, 180)),
(psp, None, border, f_enlarge, 0, (504, 972), (648, 216), # 078
(504, 972), (864, 432)),
(psp, None, border, f_enlarge, 1, (972, 504), (648, 216), # 079
(972, 504), (864, 432)),
(psp, isp, None, f_into, 0, (504, 972), (324, 108), # 080
(504, 972), (324, 162)),
(psp, isp, None, f_into, 1, (972, 504), (324, 108), # 081
(972, 504), (324, 162)),
(psp, isp, None, f_fill, 0, (504, 972), (2268, 756), # 082
(504, 972), (1512, 756)),
(psp, isp, None, f_fill, 1, (972, 504), (2268, 756), # 083
(972, 504), (1512, 756)),
(psp, isp, None, f_exact, 0, (504, 972), (324, 756), # 084
(504, 972), (324, 756)),
(psp, isp, None, f_exact, 1, (972, 504), (324, 756), # 085
(972, 504), (324, 756)),
(psp, isp, None, f_shrink, 0, (504, 972), (324, 108), # 086
(504, 972), (324, 162)),
(psp, isp, None, f_shrink, 1, (972, 504), (324, 108), # 087
(972, 504), (324, 162)),
(psp, isp, None, f_enlarge, 0, (504, 972), (648, 216), # 088
(504, 972), (864, 432)),
(psp, isp, None, f_enlarge, 1, (972, 504), (648, 216), # 089
(972, 504), (864, 432)),
(psp, isp, border, f_into, 0, (504, 972), (324, 108), # 090
(504, 972), (324, 162)),
(psp, isp, border, f_into, 1, (972, 504), (324, 108), # 091
(972, 504), (324, 162)),
(psp, isp, border, f_fill, 0, (504, 972), (2268, 756), # 092
(504, 972), (1512, 756)),
(psp, isp, border, f_fill, 1, (972, 504), (2268, 756), # 093
(972, 504), (1512, 756)),
(psp, isp, border, f_exact, 0, (504, 972), (324, 756), # 094
(504, 972), (324, 756)),
(psp, isp, border, f_exact, 1, (972, 504), (324, 756), # 095
(972, 504), (324, 756)),
(psp, isp, border, f_shrink, 0, (504, 972), (324, 108), # 096
(504, 972), (324, 162)),
(psp, isp, border, f_shrink, 1, (972, 504), (324, 108), # 097
(972, 504), (324, 162)),
(psp, isp, border, f_enlarge, 0, (504, 972), (648, 216), # 098
(504, 972), (864, 432)),
(psp, isp, border, f_enlarge, 1, (972, 504), (648, 216), # 099
(972, 504), (864, 432)),
# psp=972x504, psp=504x972, isl=756x324, isp=324x756, border=162:270
# --pagesize --border -a pagepdf imgpdf
# --imgsize --fit imgpx
(psp, isl, None, f_into, 0, (504, 972), (756, 252), # 100
(504, 972), (648, 324)),
(psp, isl, None, f_into, 1, (972, 504), (756, 252), # 101
(972, 504), (648, 324)),
(psp, isl, None, f_fill, 0, (504, 972), (972, 324), # 102
(504, 972), (756, 378)),
(psp, isl, None, f_fill, 1, (972, 504), (972, 324), # 103
(972, 504), (756, 378)),
(psp, isl, None, f_exact, 0, (504, 972), (756, 324), # 104
(504, 972), (756, 324)),
(psp, isl, None, f_exact, 1, (972, 504), (756, 324), # 105
(972, 504), (756, 324)),
(psp, isl, None, f_shrink, 0, (504, 972), (648, 216), # 106
(504, 972), (648, 324)),
(psp, isl, None, f_shrink, 1, (972, 504), (648, 216), # 107
(972, 504), (648, 324)),
(psp, isl, None, f_enlarge, 0, (504, 972), (756, 252), # 108
(504, 972), (864, 432)),
(psp, isl, None, f_enlarge, 1, (972, 504), (756, 252), # 109
(972, 504), (864, 432)),
(psp, isl, border, f_into, 0, (504, 972), (756, 252), # 110
(504, 972), (648, 324)),
(psp, isl, border, f_into, 1, (972, 504), (756, 252), # 111
(972, 504), (648, 324)),
(psp, isl, border, f_fill, 0, (504, 972), (972, 324), # 112
(504, 972), (756, 378)),
(psp, isl, border, f_fill, 1, (972, 504), (972, 324), # 113
(972, 504), (756, 378)),
(psp, isl, border, f_exact, 0, (504, 972), (756, 324), # 114
(504, 972), (756, 324)),
(psp, isl, border, f_exact, 1, (972, 504), (756, 324), # 115
(972, 504), (756, 324)),
(psp, isl, border, f_shrink, 0, (504, 972), (648, 216), # 116
(504, 972), (648, 324)),
(psp, isl, border, f_shrink, 1, (972, 504), (648, 216), # 117
(972, 504), (648, 324)),
(psp, isl, border, f_enlarge, 0, (504, 972), (756, 252), # 118
(504, 972), (864, 432)),
(psp, isl, border, f_enlarge, 1, (972, 504), (756, 252), # 119
(972, 504), (864, 432)),
(psl, None, None, f_into, 0, (972, 504), (972, 324), # 120
(972, 504), (972, 486)),
(psl, None, None, f_into, 1, (972, 504), (972, 324), # 121
(972, 504), (972, 486)),
(psl, None, None, f_fill, 0, (972, 504), (1512, 504), # 122
(972, 504), (1008, 504)),
(psl, None, None, f_fill, 1, (972, 504), (1512, 504), # 123
(972, 504), (1008, 504)),
(psl, None, None, f_exact, 0, (972, 504), (972, 504), # 124
(972, 504), (972, 504)),
(psl, None, None, f_exact, 1, (972, 504), (972, 504), # 125
(972, 504), (972, 504)),
(psl, None, None, f_shrink, 0, (972, 504), (648, 216), # 126
(972, 504), (864, 432)),
(psl, None, None, f_shrink, 1, (972, 504), (648, 216), # 127
(972, 504), (864, 432)),
(psl, None, None, f_enlarge, 0, (972, 504), (972, 324), # 128
(972, 504), (972, 486)),
(psl, None, None, f_enlarge, 1, (972, 504), (972, 324), # 129
(972, 504), (972, 486)),
(psl, None, border, f_into, 0, None, None, None, None), # 130
(psl, None, border, f_into, 1, None, None, None, None), # 131
(psl, None, border, f_fill, 0, (972, 504), (648, 216), # 132
(972, 504), (648, 324)),
(psl, None, border, f_fill, 1, (972, 504), (648, 216), # 133
(972, 504), (648, 324)),
(psl, None, border, f_exact, 0, None, None, None, None), # 134
(psl, None, border, f_exact, 1, None, None, None, None), # 135
(psl, None, border, f_shrink, 0, None, None, None, None), # 136
(psl, None, border, f_shrink, 1, None, None, None, None), # 137
(psl, None, border, f_enlarge, 0, (972, 504), (648, 216), # 138
(972, 504), (864, 432)),
(psl, None, border, f_enlarge, 1, (972, 504), (648, 216), # 139
(972, 504), (864, 432)),
(psl, isp, None, f_into, 0, (972, 504), (324, 108), # 140
(972, 504), (324, 162)),
(psl, isp, None, f_into, 1, (972, 504), (324, 108), # 141
(972, 504), (324, 162)),
(psl, isp, None, f_fill, 0, (972, 504), (2268, 756), # 142
(972, 504), (1512, 756)),
(psl, isp, None, f_fill, 1, (972, 504), (2268, 756), # 143
(972, 504), (1512, 756)),
(psl, isp, None, f_exact, 0, (972, 504), (324, 756), # 144
(972, 504), (324, 756)),
(psl, isp, None, f_exact, 1, (972, 504), (324, 756), # 145
(972, 504), (324, 756)),
(psl, isp, None, f_shrink, 0, (972, 504), (324, 108), # 146
(972, 504), (324, 162)),
(psl, isp, None, f_shrink, 1, (972, 504), (324, 108), # 147
(972, 504), (324, 162)),
(psl, isp, None, f_enlarge, 0, (972, 504), (648, 216), # 148
(972, 504), (864, 432)),
(psl, isp, None, f_enlarge, 1, (972, 504), (648, 216), # 149
(972, 504), (864, 432)),
# psp=972x504, psl=504x972, isl=756x324, isp=324x756, border=162:270
# --pagesize --border -a pagepdf imgpdf
# --imgsize --fit imgpx
(psl, isp, border, f_into, 0, (972, 504), (324, 108), # 150
(972, 504), (324, 162)),
(psl, isp, border, f_into, 1, (972, 504), (324, 108), # 151
(972, 504), (324, 162)),
(psl, isp, border, f_fill, 0, (972, 504), (2268, 756), # 152
(972, 504), (1512, 756)),
(psl, isp, border, f_fill, 1, (972, 504), (2268, 756), # 153
(972, 504), (1512, 756)),
(psl, isp, border, f_exact, 0, (972, 504), (324, 756), # 154
(972, 504), (324, 756)),
(psl, isp, border, f_exact, 1, (972, 504), (324, 756), # 155
(972, 504), (324, 756)),
(psl, isp, border, f_shrink, 0, (972, 504), (324, 108), # 156
(972, 504), (324, 162)),
(psl, isp, border, f_shrink, 1, (972, 504), (324, 108), # 157
(972, 504), (324, 162)),
(psl, isp, border, f_enlarge, 0, (972, 504), (648, 216), # 158
(972, 504), (864, 432)),
(psl, isp, border, f_enlarge, 1, (972, 504), (648, 216), # 159
(972, 504), (864, 432)),
(psl, isl, None, f_into, 0, (972, 504), (756, 252), # 160
(972, 504), (648, 324)),
(psl, isl, None, f_into, 1, (972, 504), (756, 252), # 161
(972, 504), (648, 324)),
(psl, isl, None, f_fill, 0, (972, 504), (972, 324), # 162
(972, 504), (756, 378)),
(psl, isl, None, f_fill, 1, (972, 504), (972, 324), # 163
(972, 504), (756, 378)),
(psl, isl, None, f_exact, 0, (972, 504), (756, 324), # 164
(972, 504), (756, 324)),
(psl, isl, None, f_exact, 1, (972, 504), (756, 324), # 165
(972, 504), (756, 324)),
(psl, isl, None, f_shrink, 0, (972, 504), (648, 216), # 166
(972, 504), (648, 324)),
(psl, isl, None, f_shrink, 1, (972, 504), (648, 216), # 167
(972, 504), (648, 324)),
(psl, isl, None, f_enlarge, 0, (972, 504), (756, 252), # 168
(972, 504), (864, 432)),
(psl, isl, None, f_enlarge, 1, (972, 504), (756, 252), # 169
(972, 504), (864, 432)),
(psl, isl, border, f_into, 0, (972, 504), (756, 252), # 170
(972, 504), (648, 324)),
(psl, isl, border, f_into, 1, (972, 504), (756, 252), # 171
(972, 504), (648, 324)),
(psl, isl, border, f_fill, 0, (972, 504), (972, 324), # 172
(972, 504), (756, 378)),
(psl, isl, border, f_fill, 1, (972, 504), (972, 324), # 173
(972, 504), (756, 378)),
(psl, isl, border, f_exact, 0, (972, 504), (756, 324), # 174
(972, 504), (756, 324)),
(psl, isl, border, f_exact, 1, (972, 504), (756, 324), # 175
(972, 504), (756, 324)),
(psl, isl, border, f_shrink, 0, (972, 504), (648, 216), # 176
(972, 504), (648, 324)),
(psl, isl, border, f_shrink, 1, (972, 504), (648, 216), # 177
(972, 504), (648, 324)),
(psl, isl, border, f_enlarge, 0, (972, 504), (756, 252), # 178
(972, 504), (864, 432)),
(psl, isl, border, f_enlarge, 1, (972, 504), (756, 252), # 179
(972, 504), (864, 432)),
]
def test_suite():
class TestImg2Pdf(unittest.TestCase):
pass
for test_name in os.listdir(os.path.join(HERE, "input")):
for i, (psopt, isopt, border, fit, ao, pspdf1, ispdf1,
pspdf2, ispdf2) in enumerate(layout_test_cases):
if isopt is not None:
isopt = ((img2pdf.ImgSize.abs, isopt[0]),
(img2pdf.ImgSize.abs, isopt[1]))
def layout_handler(
self, psopt, isopt, border, fit, ao, pspdf, ispdf, im):
layout_fun = img2pdf.get_layout_fun(psopt, isopt, border, fit, ao)
try:
pwpdf, phpdf, iwpdf, ihpdf = \
layout_fun(im[0], im[1], (img2pdf.default_dpi,
img2pdf.default_dpi))
self.assertEqual((pwpdf, phpdf), pspdf)
self.assertEqual((iwpdf, ihpdf), ispdf)
except img2pdf.NegativeDimensionException:
self.assertEqual(None, pspdf)
self.assertEqual(None, ispdf)
def layout_handler_im1(self, psopt=psopt, isopt=isopt, border=border,
fit=fit, ao=ao, pspdf=pspdf1, ispdf=ispdf1):
layout_handler(self, psopt, isopt, border, fit, ao, pspdf, ispdf,
im1)
setattr(TestImg2Pdf, "test_layout_%03d_im1" % i, layout_handler_im1)
def layout_handler_im2(self, psopt=psopt, isopt=isopt, border=border,
fit=fit, ao=ao, pspdf=pspdf2, ispdf=ispdf2):
layout_handler(self, psopt, isopt, border, fit, ao, pspdf, ispdf,
im2)
setattr(TestImg2Pdf, "test_layout_%03d_im2" % i, layout_handler_im2)
files = os.listdir(os.path.join(HERE, "input"))
for with_pdfrw, test_name in [(a, b) for a in [True, False]
for b in files]:
inputf = os.path.join(HERE, "input", test_name)
if not os.path.isfile(inputf):
continue
outputf = os.path.join(HERE, "output", test_name+".pdf")
assert os.path.isfile(outputf)
def handle(self, f=inputf, out=outputf):
def handle(self, f=inputf, out=outputf, with_pdfrw=with_pdfrw):
with open(f, "rb") as inf:
orig_imgdata = inf.read()
pdf = img2pdf.convert([f], nodate=True)
imgdata = b""
instream = False
imgobj = False
colorspace = None
imgfilter = None
width = None
height = None
length = None
# ugly workaround to parse the created pdf
for line in pdf.split(b'\n'):
if instream:
if line == b"endstream":
break
else:
imgdata += line + b'\n'
else:
if imgobj and line == b"stream":
instream = True
elif b"/Subtype /Image" in line:
imgobj = True
elif b"/Width" in line:
width = int(line.split()[-1])
elif b"/Height" in line:
height = int(line.split()[-1])
elif b"/Length" in line:
length = int(line.split()[-1])
elif b"/Filter" in line:
imgfilter = line.split()[-2]
elif b"/ColorSpace" in line:
colorspace = line.split()[-1]
# remove trailing \n
imgdata = imgdata[:-1]
# test if the length field is correct
self.assertEqual(len(imgdata), length)
output = img2pdf.convert(orig_imgdata, nodate=True,
with_pdfrw=with_pdfrw)
from io import StringIO, BytesIO
from pdfrw import PdfReader, PdfName, PdfWriter
from pdfrw.py23_diffs import convert_load, convert_store
x = PdfReader(StringIO(convert_load(output)))
self.assertEqual(sorted(x.keys()), [PdfName.Info, PdfName.Root,
PdfName.Size])
self.assertEqual(x.Size, '7')
self.assertEqual(x.Info, {})
self.assertEqual(sorted(x.Root.keys()), [PdfName.Pages,
PdfName.Type])
self.assertEqual(x.Root.Type, PdfName.Catalog)
self.assertEqual(sorted(x.Root.Pages.keys()),
[PdfName.Count, PdfName.Kids, PdfName.Type])
self.assertEqual(x.Root.Pages.Count, '1')
self.assertEqual(x.Root.Pages.Type, PdfName.Pages)
self.assertEqual(len(x.Root.Pages.Kids), 1)
self.assertEqual(sorted(x.Root.Pages.Kids[0].keys()),
[PdfName.Contents, PdfName.MediaBox,
PdfName.Parent, PdfName.Resources, PdfName.Type])
self.assertEqual(x.Root.Pages.Kids[0].MediaBox,
['0', '0', '115', '48'])
self.assertEqual(x.Root.Pages.Kids[0].Parent, x.Root.Pages)
self.assertEqual(x.Root.Pages.Kids[0].Type, PdfName.Page)
self.assertEqual(x.Root.Pages.Kids[0].Resources.keys(),
[PdfName.XObject])
self.assertEqual(x.Root.Pages.Kids[0].Resources.XObject.keys(),
[PdfName.Im0])
self.assertEqual(x.Root.Pages.Kids[0].Contents.keys(),
[PdfName.Length])
self.assertEqual(x.Root.Pages.Kids[0].Contents.Length,
str(len(x.Root.Pages.Kids[0].Contents.stream)))
self.assertEqual(x.Root.Pages.Kids[0].Contents.stream,
"q\n115.0000 0 0 48.0000 0.0000 0.0000 cm\n/Im0 "
"Do\nQ")
imgprops = x.Root.Pages.Kids[0].Resources.XObject.Im0
# test if the filter is valid:
self.assertIn(imgfilter, [b"/DCTDecode", b"/JPXDecode", b"/FlateDecode"])
self.assertIn(
imgprops.Filter, [[PdfName.DCTDecode], [PdfName.JPXDecode],
[PdfName.FlateDecode]])
# test if the colorspace is valid
self.assertIn(colorspace, [b"/DeviceGray", b"/DeviceRGB", b"/DeviceCMYK"])
self.assertIn(
imgprops.ColorSpace, [PdfName.DeviceGray, PdfName.DeviceRGB,
PdfName.DeviceCMYK])
# test if the image has correct size
orig_img = Image.open(f)
self.assertEqual(width, orig_img.size[0])
self.assertEqual(height, orig_img.size[1])
self.assertEqual(imgprops.Width, str(orig_img.size[0]))
self.assertEqual(imgprops.Height, str(orig_img.size[1]))
# if the input file is a jpeg then it should've been copied
# verbatim into the PDF
if imgfilter in [b"/DCTDecode", b"/JPXDecode"]:
self.assertEqual(imgdata, orig_imgdata)
elif imgfilter == b"/FlateDecode":
if imgprops.Filter in [[PdfName.DCTDecode], [PdfName.JPXDecode]]:
self.assertEqual(
x.Root.Pages.Kids[0].Resources.XObject.Im0.stream,
convert_load(orig_imgdata))
elif imgprops.Filter == [PdfName.FlateDecode]:
# otherwise, the data is flate encoded and has to be equal to
# the pixel data of the input image
imgdata = zlib.decompress(imgdata)
if colorspace == b"/DeviceGray":
imgdata = zlib.decompress(
convert_store(
x.Root.Pages.Kids[0].Resources.XObject.Im0.stream))
colorspace = imgprops.ColorSpace
if colorspace == PdfName.DeviceGray:
colorspace = 'L'
elif colorspace == b"/DeviceRGB":
elif colorspace == PdfName.DeviceRGB:
colorspace = 'RGB'
elif colorspace == b"/DeviceCMYK":
elif colorspace == PdfName.DeviceCMYK:
colorspace = 'CMYK'
else:
raise Exception("invalid colorspace")
im = Image.frombytes(colorspace, (width, height), imgdata)
im = Image.frombytes(colorspace, (int(imgprops.Width),
int(imgprops.Height)),
imgdata)
if orig_img.mode == '1':
orig_img = orig_img.convert("L")
elif orig_img.mode not in ("RGB", "L", "CMYK", "CMYK;I"):
orig_img = orig_img.convert("RGB")
self.assertEqual(im.tobytes(), orig_img.tobytes())
# the python-pil version 2.3.0-1ubuntu3 in Ubuntu does not have the close() method
# the python-pil version 2.3.0-1ubuntu3 in Ubuntu does not have
# the close() method
try:
im.close()
except AttributeError:
pass
# lastly, make sure that the generated pdf matches bit by bit the
# expected pdf
with open(out, "rb") as outf:
out = outf.read()
self.assertEqual(pdf, out)
# the python-pil version 2.3.0-1ubuntu3 in Ubuntu does not have the close() method
# now use pdfrw to parse and then write out both pdfs and check the
# result for equality
y = PdfReader(out)
outx = BytesIO()
outy = BytesIO()
xwriter = PdfWriter()
ywriter = PdfWriter()
xwriter.trailer = x
ywriter.trailer = y
xwriter.write(outx)
ywriter.write(outy)
self.assertEqual(outx.getvalue(), outy.getvalue())
# the python-pil version 2.3.0-1ubuntu3 in Ubuntu does not have the
# close() method
try:
orig_img.close()
except AttributeError:
pass
setattr(TestImg2Pdf, "test_%s"%test_name, handle)
if with_pdfrw:
setattr(TestImg2Pdf, "test_%s_with_pdfrw" % test_name, handle)
else:
setattr(TestImg2Pdf, "test_%s_without_pdfrw" % test_name, handle)
return unittest.TestSuite((
unittest.makeSuite(TestImg2Pdf),

BIN
src/tests/output/CMYK.jpg.pdf
View file

Binary file not shown.

BIN
src/tests/output/CMYK.tif.pdf
View file

Binary file not shown.

BIN
src/tests/output/normal.jpg.pdf
View file

Binary file not shown.

BIN
src/tests/output/normal.png.pdf
View file

Binary file not shown.