[gdal-dev] Get Image Endianness

[Alejandro Mostovoi]

Ok,

thanks for your answers


Alejandro.


On 3 February 2010 15:26, Even Rouault <even.rouault at mines-paris.org> wrote:

> Alejandro,
>
> There is no such general method in GDAL. Determining on disk endianness is
> format specific (it makes sense only for some formats) and, to the best of
> my
> knowledge, rarely/never exposed as a metadata that can be retrieved by the
> GDAL API. If you want it badly, you'll have to hack the appropriate drivers
> code to make them report the endianness.
>
> Le Wednesday 03 February 2010 19:15:00 Alejandro Mostovoi, vous avez
> écrit :
> > Thanks, the read of the image is resolved.
> > But my app shows information about an open image, one data of that
> > information is (or will be) the endianness of the image, I mean, the
> format
> > of the image shouldn't be significant.
> > I need some method o struct that return the endianness of the image.
> >
> > Thanks again.
> > Alejandro.
> >
> > On 3 February 2010 15:03, Frank Warmerdam <warmerdam at pobox.com> wrote:
> > > Alejandro Mostovoi wrote:
> > >> Hi All,
> > >>
> > >> I need to know the image endianness.
> > >> I search for in api's help and list but can't find anything.
> > >>
> > >> Any idea?
> > >
> > > Alejandro,
> > >
> > > As mentioned by others the on-disk endianess varies by format and
> > > sometimes by file in a format.  The endianess of data returned by the
> > > GDAL API is always
> > > local machine order. So if you read a big endian file on a little
> endian
> > > system, the RasterIO() calls will return the data to the application in
> > > little
> > > endian byte order.
> > >
> > > Best regards,
> > > --
> > >
> > >
> ---------------------------------------+---------------------------------
> > >----- I set the clouds in motion - turn up   | Frank Warmerdam,
> > > warmerdam at pobox.com
> > > light and sound - activate the windows |
> > > http://pobox.com/~warmerdam <http://pobox.com/%7Ewarmerdam><
> http://pobox.com/%7Ewarmerdam> and watch the
> > > world go round - Rush    | Geospatial Programmer for Rent
>
>
>
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