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Bring back check for bad rlevel. #159

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OpenJPEG 1.5 needs the protection, it would seem.
This commit is contained in:
John Evans 2014-03-12 10:10:38 -04:00
commit b479ece7b4
1 changed files with 13 additions and 0 deletions
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13
glymur/jp2k.py
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@ -772,6 +772,19 @@ class Jp2k(Jp2kBox):
""" """
self._subsampling_sanity_check() self._subsampling_sanity_check()
# Must check the specified rlevel against the maximum.
if rlevel != 0:
# Must check the specified rlevel against the maximum.
codestream = self.get_codestream()
max_rlevel = codestream.segment[2].spcod[4]
if rlevel == -1:
# -1 is shorthand for the largest rlevel
rlevel = max_rlevel
elif rlevel < -1 or rlevel > max_rlevel:
msg = "rlevel must be in the range [-1, {0}] for this image."
msg = msg.format(max_rlevel)
raise IOError(msg)
with ExitStack() as stack: with ExitStack() as stack:
try: try:
# Set decoding parameters. # Set decoding parameters.