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From Damjan Jovanovic <dam...@apache.org>
Subject Re: [sanselan] Writing EXIF data to JPEG
Date Wed, 07 Mar 2012 18:41:18 GMT
On Wed, Mar 7, 2012 at 8:07 PM, Kasper Føns <kfoens@gmail.com> wrote:
> On 07-03-2012 06:37, Damjan Jovanovic wrote:
>>
>> On Wed, Mar 7, 2012 at 12:46 AM, Kasper Føns<kfoens@gmail.com>  wrote:
>>>
>>> Hi Sanselan.
>>>
>>> I have a hard time finding out how to use Sanselan.
>>>
>>> Suppose I have some JPEG picture which I want to add some attributes to.
>>> If for example I want to add some user comment or date I try this:
>>>
>>> TiffOutputSet outputSet = new TiffOutputSet();
>>> TiffOutputField dateTaken =
>>> TiffOutputField.create(TiffConstants.EXIF_TAG_CREATE_DATE,
>>> outputSet.byteOrder, "2003:03:29 17:47:50");
>>> TiffOutputField comment =
>>> TiffOutputField.create(TiffConstants.EXIF_TAG_IMAGE_DESCRIPTION,
>>> outputSet.byteOrder, "This is a test!");
>>>
>>> However, both of these fails on "unexpected data type".
>>> If I am not supposed to give a String, then what I am supposed to supply?
>>>
>>> I hope you can help with these, probably noobish questions.
>>>
>>> /Kasper
>>
>> That TiffOutputField.create() was a horribly broken API that I've
>> eliminated in the latest SVN, and replaced with a new, beautiful, type
>> safe, code completable, byte order independent
>> TiffOutputDirectory.add() API.
>>
>> I recommend you use the latest SVN, or wait for the 1.0 release in a
>> few weeks. If you really must use version 0.97, I think the only way
>> to get strings to work is to convert the string to bytes with
>> getBytes(), null-terminate those yourself, then pass them to the
>> low-level constructor "new TiffOutputField(...)".
>>
>> Damjan
>
>
> Hi again Damjan.
>
> Thanks for the response. I have had a look at the new API, and it looks
> cleaner.
>
> I want to run this on Android, and I can see that there is a heavy
> dependency on java.awt, which unfortunately is not in Android.
> Do you have some hints as what to do?
>
>
> /Kasper

No, sorry, Android isn't supported at the moment. There is a fork
(http://code.google.com/p/sanselanandroid/) which supposedly lets you
do EXIF on Android, but I've never tried it.

Damjan

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