Re: CFD: eXIf 2017-05-31

Glenn Randers-Pehrson <[email protected]> Thu, 8 Jun 2017 08:31:39 -0400
Newsgroups gmane.comp.graphics.png.general
Message-ID <CA+PdXcvJiC6OTB3ahLh6h3=gbEB0sXrp2UcG11kR5Vq3s+Ge6g@mail.gmail.com>
On Thu, Jun 8, 2017 at 8:16 AM, Phil Harvey <phil-CIeU6mJ2MbMd166Dz3SrqbDks+cytr/[email protected]> wrote:
>> From: Cosmin Truta <[email protected]>
>>
>> Speaking of RFC-2119: should the draft not use "should" instead of
>> "must" in the paragraph that mentions the 64KB size limit?
>
> I would maybe suggest rewording this to put the burden on the
> decoder:
>
> "The PNG specification allows the chunk size to be as
> large as 2^31-1 bytes, so decoders should be aware that,
> if the Exif profile is converted to JPEG, it may be
> necessary to reduce the total length of the Exif data
> to fit inside the ~64 kbyte limit of a JPEG segment."

OK, and the whole paragraph can be relocated into the
Recommendations for Decoders section.

Glenn

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