Yes, you would add it as an array of uint8 (bytes), where the array length is
the size of the blob, in bytes.
Like this:
spec.attribute ("icc-profile", TypeDesc(TypeDesc::UINT8, blobsize), &blob);
This is assuming that an ICC profile can be unambiguously decoded "on the other
end" by knowing its size. Are they always the same size? Or is it one of a few
varieties that can be disambiguated by size?
On Jul 24, 2013, at 2:38 PM, Malcolm Humphreys wrote:
> For embedded icc profiles it would be a binary blob, is this even supported?
>
> .malcolm
>
> On 19/07/2013, at 12:33 AM, Larry Gritz wrote:
>
>> I have to admit that my knowledge is sketchy as to precisely what data makes
>> up an ICC profile.
>>
>> So anyway, the way that the ImageSpec is organized is that only the most
>> basic, universal, core information about an image get their own fields in
>> the ImageSpec (pixel data resolution, data format, number of channels,
>> etc.). But there is a field called 'extra_attribs' that is a parameter list
>> of fairly arbitrary name/value pairs, and that's where we store the vast
>> bulk of the metadata. So you can already stash ICC profiles here, you don't
>> need any special fields. We should choose a standardized name, however, so
>> that we can document it and all OIIO-using apps will save or search for it
>> under the same name.
>>
>> If somebody can sketch out the data layout of the ICC profile data (what
>> specifically it consists of), I'm happy to reply with the set of commands
>> you'd need to store / retrieve it in the ImageSpec.
>>
>> -- lg
>>
>>
>> On Jul 18, 2013, at 3:46 PM, Yang Yang wrote:
>>
>>> Hi All,
>>>
>>> I am working on open TIFF and JPEG with different color profiles.
>>> I find out that there is no field in ImageSpec to hold color profiles from
>>> JPEG, TIFF and PNG etc.
>>> The input and output plugins don't handle the ICC_PROFILE sections.
>>> Does OpenImageIO have plan to add ICC_PROFILE section in ImageSpec?
>>> Even use OCIO, if there is no way to extract color profile info from file
>>> to ImageSpec,
>>> then how can batch processing images with different color profile?
>>>
>>> Currently I have some code to handle this by adding a color profile section
>>> in ImageSpec and
>>> modify plugins to read embedded profile into ImageSpec and write it back to
>>> file.
>>> I just wonder to know if there is a plan for it or not.
>>> I used to ask this question one week ago.
>>>
>>> Thanks in advance for your help.
>>>
>>> Yang
>>>
>>
>> --
>> Larry Gritz
>> [email protected]
>>
>>
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>
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--
Larry Gritz
[email protected]
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