Public bug reported:
Version: 2.12.0-0ubuntu2
I have this problem since I updated from Ubuntu 6.06 to 7.10
If you feed large chunks of data to gtk.gdk.PixbufLoader you get
an exception if you close the loader. Here is the exception:
===> LANG=C python /home/guettli/tmp/t.py
Traceback (most recent call last):
File "/home/guettli/tmp/t.py", line 6, in <module>
p.close()
gobject.GError: Error interpreting JPEG image file (Application transferred too
few scanlines)
Here is an example code:
# t.py:
import gtk
p = gtk.gdk.PixbufLoader()
data = open("t.jpg").read() # OK size 1,6K
p.write(data)
p.close()
I investigated if the chunksize is 210953 Bytes, it fails. One bytes less
loading does not fail, but the image looks broken (some rectangles are shifted
and the colors don't match). If you use 140000 the image looks broken,
but if you use 130000 as chunksize, the image looks good.
Here is the script I used to check for the maximum size:
import gtk
chunksize=210950
while True:
chunksize+=1
fd=open("/home/guettli/pictures/ixus/2002-01-04/IMG_0120.JPG")
p = gtk.gdk.PixbufLoader()
while True:
data=fd.read(chunksize)
if not data:
break
p.write(data)
print 'chunksize', chunksize
p.close()
===> uname -a
Linux r51 2.6.22-14-generic #1 SMP Tue Feb 12 07:42:25 UTC 2008 i686 GNU/Linux
** Affects: python-gtk2 (Ubuntu)
Importance: Undecided
Status: New
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gtk.gdk.PixbufLoader fails if chunksize is large
https://bugs.launchpad.net/bugs/193993
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