def PIL_imagedata(self):
image = self.image
if image.format == 'JPEG':
fp = image.fp
fp.seek(0)
return self._jpg_imagedata(fp)
self.source = 'PIL'
zlib = import_zlib()
if not zlib: return
myimage = image.convert('RGB')
imgwidth, imgheight = myimage.size
# this describes what is in the image itself
# *NB* according to the spec you can only use the short form in inline images
#imagedata=['BI /Width %d /Height /BitsPerComponent 8 /ColorSpace /%s /Filter [/Filter [ /ASCII85Decode /FlateDecode] ID]' % (imgwidth, imgheight,'RGB')]
imagedata = [
'BI /W %d /H %d /BPC 8 /CS /RGB /F [/A85 /Fl] ID' %
(imgwidth, imgheight)
]
#use a flate filter and Ascii Base 85 to compress
raw = myimage.tostring()
assert (len(raw) == imgwidth * imgheight,
"Wrong amount of data for image")
compressed = zlib.compress(raw) #this bit is very fast...
encoded = pdfutils._AsciiBase85Encode(
compressed) #...sadly this may not be
#append in blocks of 60 characters
pdfutils._chunker(encoded, imagedata)
imagedata.append('EI')
return (imagedata, imgwidth, imgheight)
def PIL_imagedata(self):
image = self.image
if image.format=='JPEG':
fp=image.fp
fp.seek(0)
return self._jpg_imagedata(fp)
self.source = 'PIL'
zlib = import_zlib()
if not zlib: return
# Use the colorSpace in the image
if image.mode == 'CMYK':
myimage = image
colorSpace = 'DeviceCMYK'
bpp = 4
else:
myimage = image.convert('RGB')
colorSpace = 'RGB'
bpp = 3
imgwidth, imgheight = myimage.size
# this describes what is in the image itself
# *NB* according to the spec you can only use the short form in inline images
imagedata=['BI /W %d /H %d /BPC 8 /CS /%s /F [%s/Fl] ID' % (imgwidth, imgheight,colorSpace, rl_config.useA85 and '/A85 ' or '')]
#use a flate filter and, optionally, Ascii Base 85 to compress
raw = myimage.tostring()
assert len(raw) == imgwidth*imgheight*bpp, "Wrong amount of data for image"
data = zlib.compress(raw) #this bit is very fast...
if rl_config.useA85:
data = pdfutils._AsciiBase85Encode(data) #...sadly this may not be
#append in blocks of 60 characters
pdfutils._chunker(data,imagedata)
imagedata.append('EI')
return (imagedata, imgwidth, imgheight)
def PIL_imagedata(self):
image = self.image
if image.format=='JPEG':
fp=image.fp
fp.seek(0)
return self._jpg_imagedata(fp)
self.source = 'PIL'
zlib = import_zlib()
if not zlib: return
myimage = image.convert('RGB')
imgwidth, imgheight = myimage.size
# this describes what is in the image itself
# *NB* according to the spec you can only use the short form in inline images
#imagedata=['BI /Width %d /Height /BitsPerComponent 8 /ColorSpace /%s /Filter [/Filter [ /ASCII85Decode /FlateDecode] ID]' % (imgwidth, imgheight,'RGB')]
imagedata=['BI /W %d /H %d /BPC 8 /CS /RGB /F [/A85 /Fl] ID' % (imgwidth, imgheight)]
#use a flate filter and Ascii Base 85 to compress
raw = myimage.tostring()
assert(len(raw) == imgwidth * imgheight, "Wrong amount of data for image")
compressed = zlib.compress(raw) #this bit is very fast...
encoded = pdfutils._AsciiBase85Encode(compressed) #...sadly this may not be
#append in blocks of 60 characters
pdfutils._chunker(encoded,imagedata)
imagedata.append('EI')
return (imagedata, imgwidth, imgheight)
def jpg_imagedata(self):
#directly process JPEG files
#open file, needs some error handling!!
self.source = 'JPEG'
imageFile = open(self.image, 'rb')
info = pdfutils.readJPEGInfo(imageFile)
imgwidth, imgheight = info[0], info[1]
if info[2] == 1:
colorSpace = 'DeviceGray'
elif info[2] == 3:
colorSpace = 'DeviceRGB'
else: #maybe should generate an error, is this right for CMYK?
colorSpace = 'DeviceCMYK'
imageFile.seek(0) #reset file pointer
imagedata = []
#imagedata.append('BI /Width %d /Height /BitsPerComponent 8 /ColorSpace /%s /Filter [/Filter [ /ASCII85Decode /DCTDecode] ID' % (info[0], info[1], colorSpace))
imagedata.append('BI /W %d /H %d /BPC 8 /CS /%s /F [/A85 /DCT] ID' % (imgwidth, imgheight, colorSpace))
#write in blocks of (??) 60 characters per line to a list
compressed = imageFile.read()
encoded = pdfutils._AsciiBase85Encode(compressed)
outstream = getStringIO(encoded)
dataline = outstream.read(60)
while dataline <> "":
imagedata.append(dataline)
self.binaryData.append(dataline)
dataline = outstream.read(60)
imagedata.append('EI')
return (imagedata, imgwidth, imgheight)
def PIL_imagedata(self):
self.source = 'PIL'
zlib = import_zlib()
if not zlib: return
image = self.image
myimage = image.convert('RGB')
imgwidth, imgheight = myimage.size
# this describes what is in the image itself
# *NB* according to the spec you can only use the short form in inline images
#imagedata=['BI /Width %d /Height /BitsPerComponent 8 /ColorSpace /%s /Filter [/Filter [ /ASCII85Decode /FlateDecode] ID]' % (imgwidth, imgheight,'RGB')]
imagedata=['BI /W %d /H %d /BPC 8 /CS /RGB /F [/A85 /Fl] ID' % (imgwidth, imgheight)]
#use a flate filter and Ascii Base 85 to compress
raw = myimage.tostring()
assert(len(raw) == imgwidth * imgheight, "Wrong amount of data for image")
compressed = zlib.compress(raw) #this bit is very fast...
encoded = pdfutils._AsciiBase85Encode(compressed) #...sadly this isn't
#write in blocks of (??) 60 characters per line to a list
outstream = getStringIO(encoded)
dataline = outstream.read(60)
while dataline <> "":
imagedata.append(dataline)
self.binaryData.append(dataline)
dataline = outstream.read(60)
imagedata.append('EI')
return (imagedata, imgwidth, imgheight)
def main(filters,fileNames):
import base64, zlib, bz2
from xml.sax.saxutils import escape
from reportlab.pdfbase import pdfutils
if isinstance(filters,str):
filters = filters.split()
for fn in fileNames:
f = open(fn,'rb')
try:
data = f.read()
finally:
f.close()
for filter in filters:
filter = filter.strip()
if not filter: continue
if filter=='base64':
data = base64.standard_b64encode(data)
elif filter=='ascii85':
data = pdfutils._AsciiBase85Encode(data)
elif filter=='bzip2':
data = bz2.compress(data)
elif filter=='gzip':
data = zlib.compress(data)
else:
raise ValueError('unknown inlinedata filter %r not one of ascii85, base64, gzip or bzip2' % filter)
print("<inlineData filters=%r>%s</inlineData>" % (' '.join(reversed(filters)),escape(data)))
def testAsciiBase85(self):
"Test if the obvious test for whether ASCII-Base85 encoding works."
msg = "Round-trip AsciiBase85 encoding failed."
plain = 'What is the average velocity of a sparrow?'
#the remainder block can be absent or from 1 to 4 bytes
for i in xrange(55):
encoded = _AsciiBase85Encode(plain)
decoded = _AsciiBase85Decode(encoded)
assert decoded == plain, msg
plain = plain + chr(i)
def testAsciiBase85(self):
"Test if the obvious test for whether ASCII-Base85 encoding works."
msg = "Round-trip AsciiBase85 encoding failed."
plain = 'What is the average velocity of a sparrow?'
#the remainder block can be absent or from 1 to 4 bytes
for i in xrange(55):
encoded = _AsciiBase85Encode(plain)
decoded = _AsciiBase85Decode(encoded)
assert decoded == plain, msg
plain = plain + chr(i)
def PIL_imagedata(self):
image = self.image
if image.format == 'JPEG':
fp = image.fp
fp.seek(0)
return self._jpg_imagedata(fp)
self.source = 'PIL'
zlib = import_zlib()
if not zlib: return
bpc = 8
# Use the colorSpace in the image
if image.mode == 'CMYK':
myimage = image
colorSpace = 'DeviceCMYK'
bpp = 4
elif image.mode == '1':
myimage = image
colorSpace = 'DeviceGray'
bpp = 1
bpc = 1
elif image.mode == 'L':
myimage = image
colorSpace = 'DeviceGray'
bpp = 1
else:
myimage = image.convert('RGB')
colorSpace = 'RGB'
bpp = 3
imgwidth, imgheight = myimage.size
# this describes what is in the image itself
# *NB* according to the spec you can only use the short form in inline images
imagedata = [
'BI /W %d /H %d /BPC %d /CS /%s /F [%s/Fl] ID' %
(imgwidth, imgheight, bpc, colorSpace, rl_config.useA85 and '/A85 '
or '')
]
#use a flate filter and, optionally, Ascii Base 85 to compress
raw = myimage.tostring()
rowstride = (imgwidth * bpc * bpp + 7) / 8
assert len(
raw) == rowstride * imgheight, "Wrong amount of data for image"
data = zlib.compress(raw) #this bit is very fast...
if rl_config.useA85:
data = pdfutils._AsciiBase85Encode(data) #...sadly this may not be
#append in blocks of 60 characters
pdfutils._chunker(data, imagedata)
imagedata.append('EI')
return (imagedata, imgwidth, imgheight)
def _jpg_imagedata(self,imageFile):
self.source = 'JPEG'
info = pdfutils.readJPEGInfo(imageFile)
imgwidth, imgheight = info[0], info[1]
if info[2] == 1:
colorSpace = 'DeviceGray'
elif info[2] == 3:
colorSpace = 'DeviceRGB'
else: #maybe should generate an error, is this right for CMYK?
colorSpace = 'DeviceCMYK'
imageFile.seek(0) #reset file pointer
imagedata = []
#imagedata.append('BI /Width %d /Height /BitsPerComponent 8 /ColorSpace /%s /Filter [/Filter [ /ASCII85Decode /DCTDecode] ID' % (info[0], info[1], colorSpace))
imagedata.append('BI /W %d /H %d /BPC 8 /CS /%s /F [/A85 /DCT] ID' % (imgwidth, imgheight, colorSpace))
#write in blocks of (??) 60 characters per line to a list
compressed = imageFile.read()
encoded = pdfutils._AsciiBase85Encode(compressed)
pdfutils._chunker(encoded,imagedata)
imagedata.append('EI')
return (imagedata, imgwidth, imgheight)
def _jpg_imagedata(self,imageFile):
info = pdfutils.readJPEGInfo(imageFile)
self.source = 'JPEG'
imgwidth, imgheight = info[0], info[1]
if info[2] == 1:
colorSpace = 'DeviceGray'
elif info[2] == 3:
colorSpace = 'DeviceRGB'
else: #maybe should generate an error, is this right for CMYK?
colorSpace = 'DeviceCMYK'
imageFile.seek(0) #reset file pointer
imagedata = []
#imagedata.append('BI /Width %d /Height /BitsPerComponent 8 /ColorSpace /%s /Filter [/Filter [ /ASCII85Decode /DCTDecode] ID' % (info[0], info[1], colorSpace))
imagedata.append('BI /W %d /H %d /BPC 8 /CS /%s /F [/A85 /DCT] ID' % (imgwidth, imgheight, colorSpace))
#write in blocks of (??) 60 characters per line to a list
compressed = imageFile.read()
encoded = pdfutils._AsciiBase85Encode(compressed)
pdfutils._chunker(encoded,imagedata)
imagedata.append('EI')
return (imagedata, imgwidth, imgheight)
def _jpg_imagedata(self, imageFile):
info = pdfutils.readJPEGInfo(imageFile)
self.source = "JPEG"
imgwidth, imgheight = info[0], info[1]
if info[2] == 1:
colorSpace = "DeviceGray"
elif info[2] == 3:
colorSpace = "DeviceRGB"
else: # maybe should generate an error, is this right for CMYK?
colorSpace = "DeviceCMYK"
imageFile.seek(0) # reset file pointer
imagedata = []
# imagedata.append('BI /Width %d /Height /BitsPerComponent 8 /ColorSpace /%s /Filter [/Filter [ /ASCII85Decode /DCTDecode] ID' % (info[0], info[1], colorSpace))
imagedata.append(
"BI /W %d /H %d /BPC 8 /CS /%s /F [%s/DCT] ID"
% (imgwidth, imgheight, colorSpace, rl_config.useA85 and "/A85 " or "")
)
# write in blocks of (??) 60 characters per line to a list
data = imageFile.read()
if rl_config.useA85:
data = pdfutils._AsciiBase85Encode(data)
pdfutils._chunker(data, imagedata)
imagedata.append("EI")
return (imagedata, imgwidth, imgheight)
def PIL_imagedata(self):
'''
Add ability to output greyscale and 1-bit PIL images without conversion to RGB.
The upstream Python 2.7 version of reportlab converts 1-bit PIL images to RGB
instead of saving them in a lower BPP format. They have since added the following
fix to their Python 3.3 branch, but it has not been back-ported.
https://bitbucket.org/rptlab/reportlab/commits/177ddcbe4df6f9b461dac62612df9b8da3966a5d
'''
image = self.image
if image.format == 'JPEG':
fp = image.fp
fp.seek(0)
return self._jpg_imagedata(fp)
from reportlab.lib.utils import import_zlib
from reportlab import rl_config
from reportlab.pdfbase.pdfutils import _chunker
# in order to support both newer and older versions of reportlab
try:
from reportlab.pdfbase.pdfutils import _AsciiBase85Encode
except ImportError:
from reportlab.pdfbase.pdfutils import asciiBase85Encode as _AsciiBase85Encode
self.source = 'PIL'
zlib = import_zlib()
if not zlib:
return
bpc = 8
# Use the colorSpace in the image
if image.mode == 'CMYK':
myimage = image
colorSpace = 'DeviceCMYK'
bpp = 4
elif image.mode == '1':
myimage = image
colorSpace = 'DeviceGray'
bpp = 1
bpc = 1
elif image.mode == 'L':
myimage = image
colorSpace = 'DeviceGray'
bpp = 1
else:
myimage = image.convert('RGB')
colorSpace = 'RGB'
bpp = 3
imgwidth, imgheight = myimage.size
# this describes what is in the image itself
# *NB* according to the spec you can only use the short form in inline images
imagedata = [
'BI /W %d /H %d /BPC %d /CS /%s /F [%s/Fl] ID' %
(imgwidth, imgheight, bpc, colorSpace, rl_config.useA85 and '/A85 '
or '')
]
# use a flate filter and, optionally, Ascii Base 85 to compress
raw = myimage.tostring()
rowstride = (imgwidth * bpc * bpp + 7) / 8
assert len(raw) == rowstride * imgheight, "Wrong amount of data for image"
data = zlib.compress(raw) # this bit is very fast...
if rl_config.useA85:
# ...sadly this may not be
data = _AsciiBase85Encode(data)
# append in blocks of 60 characters
_chunker(data, imagedata)
imagedata.append('EI')
return (imagedata, imgwidth, imgheight)
def PIL_imagedata(self):
'''
Add ability to output greyscale and 1-bit PIL images without conversion to RGB.
The upstream Python 2.7 version of reportlab converts 1-bit PIL images to RGB
instead of saving them in a lower BPP format. They have since added the following
fix to their Python 3.3 branch, but it has not been back-ported.
https://bitbucket.org/rptlab/reportlab/commits/177ddcbe4df6f9b461dac62612df9b8da3966a5d
'''
image = self.image
if image.format == 'JPEG':
fp = image.fp
fp.seek(0)
return self._jpg_imagedata(fp)
from reportlab.lib.utils import import_zlib
from reportlab import rl_config
from reportlab.pdfbase.pdfutils import _AsciiBase85Encode, _chunker
self.source = 'PIL'
zlib = import_zlib()
if not zlib:
return
bpc = 8
# Use the colorSpace in the image
if image.mode == 'CMYK':
myimage = image
colorSpace = 'DeviceCMYK'
bpp = 4
elif image.mode == '1':
myimage = image
colorSpace = 'DeviceGray'
bpp = 1
bpc = 1
elif image.mode == 'L':
myimage = image
colorSpace = 'DeviceGray'
bpp = 1
else:
myimage = image.convert('RGB')
colorSpace = 'RGB'
bpp = 3
imgwidth, imgheight = myimage.size
# this describes what is in the image itself
# *NB* according to the spec you can only use the short form in inline images
imagedata = ['BI /W %d /H %d /BPC %d /CS /%s /F [%s/Fl] ID' %
(imgwidth, imgheight, bpc, colorSpace, rl_config.useA85 and '/A85 ' or '')]
# use a flate filter and, optionally, Ascii Base 85 to compress
raw = myimage.tostring()
rowstride = (imgwidth * bpc * bpp + 7) / 8
assert len(raw) == rowstride * imgheight, "Wrong amount of data for image"
data = zlib.compress(raw) # this bit is very fast...
if rl_config.useA85:
# ...sadly this may not be
data = _AsciiBase85Encode(data)
# append in blocks of 60 characters
_chunker(data, imagedata)
imagedata.append('EI')
return (imagedata, imgwidth, imgheight)
