Hello,
Another developer here is using OIIO's python bindings to read a single exr
file and split its multi-layer channels, currently in one part, into
multi-part, but has run into an issue. Our configuration of VRay appears to be
creating a metadata attribute called "name" but with a value of "", so when
OpenEXRInput::PartInfo::parse_header() (in exrinput.cpp) calls
Imf::Header::hasName() function, hasName() to return true. When outputting a
multi-part exr you have to give it a series of ImageSpec objects, but they're
all getting initialized to the same "" name value, causing a write exception.
As a workaround, he's stripping all metadata as a preprocess, and making a
multi-part from that stripped file works. Our suggestion would be that instead
of just:
if (header->hasName())
spec.attribute("oiio:subimagename", header->name());
maybe it should be:
if (header->hasName() && header->name() != "")
spec.attribute("oiio:subimagename", header->name());
or something equivalent? Or do you have any other suggestions for how to
handle this edge case?
Thanks...
Chris
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