Re: [Openexr-devel] List of all availabe attributes in an exr file

[Lars Borg]

When will XMP be available in EXR?
One top-level attribute for lots of attributes.
Less speed penalty.

Lars

-----Original Message-----
From: Piotr Stanczyk <address@hidden>
Date: Tuesday, November 19, 2013 7:34 AM
To: Larry Gritz <address@hidden>, Blecher Wolf <address@hidden>
Cc: "address@hidden" <address@hidden>
Subject: Re: [Openexr-devel] List of all availabe attributes in an exr file

>+1 
>
>Also, take a look at the code for the standalone executable exrheader, it
>does something very much what you are after.
>
>- Piotr
>
>________________________________________
>From: address@hidden
>address@hidden on behalf of Larry
>Gritz address@hidden
>Sent: 19 November 2013 09:28
>To: Blecher Wolf
>Cc: address@hidden
>Subject: Re: [Openexr-devel] List of all availabe attributes in an exr
>file
>
>It is certainly possible to iterate over the full metadata of an OpenEXR
>file.
>
>        Imf::Header *header = ...;
>        for (Imf::Header::ConstIterator hit = header->begin();
>             hit != header->end();  ++hit) {
>            std::cout << "name = " << hit.name()
>                      << ", type = " << hit.attribute().typeName() <<
>"\n";
>        }
>
>
>For a full example, look at this portion of the OpenImageIO code:
>https://github.com/OpenImageIO/oiio/blob/master/src/openexr.imageio/exrinp
>ut.cpp
>look at the loop beginning at line 530.
>
>
>
>
>On Nov 19, 2013, at 12:48 AM, Blecher Wolf <address@hidden>
>wrote:
>
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA256
>>
>> Hi,
>>
>> we are currently implementing OpenEXR as an internal exchange/storage
>>format for some processed medical images.
>> Since we need to store a variety of metadata (realized by storing
>>several attributes) depending on the actual image type, we would like to
>>query a list of attributes present in the file.
>> As far as I have seen, the implementation (version 2.0.1) does not
>>provide a method for this, so my idea was to store an additional
>>attribute (StringVector) which contains the available attributes and
>>their static typename.
>> Any better ideas?
>>
>> Cheers
>>
>> Wolf
>
>--
>Larry Gritz
>address@hidden
>
>
>
>
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