[Gdal-dev] add colortable into UInt16 png file

[Frank Warmerdam]

Lijian Shi wrote:
> Hi, all
> 
>  
> 
> I have added a colortable into Byte png file. Can I add a colortable 
> into UInt16 png file with an intermediate MEM format dataset? There is 
> an error reported as:
> 
>  
> 
> libpng error invalid color type/bit depth combination in IHDR.

Lijian,

 From the message it seems that libpng does not permit color tables with
16bit files.  But if the png driver supported this, a MEM intermediate
dataset would be an appropriate way to associate the color table with the
data.

Best regards,
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