[gdal-dev] Problem to implement a new format

[Frank Warmerdam]

Vincent Honnet wrote:
> Hi,
> 
> I'm trying to implement a new format for my GDal and I have some 
> problems. For now I don't want to integrate it to the GDal source code 
> but only in gdal_translate. I call the registering method just after the 
> call to GDALAllRegister.
> I implemented the Dataset methods Open, the RasterBand methods 
> IReadBlock and IWriteBlock, the method GDalRegister_format where Open is 
> given to poDriver->pfnOpen, CreateCopy to poDriver->pfnCreateCopy and 
> Create to  and poDriver->pfnCreate and the driver is registered.
> A request on the available formats on this version of GDal_Translate 
> shows that the format is registered.
> A convertion request from a GeoTiff to this format crashes in my method 
> Open because the object GDALOpenInfo is wrong (pszFilename is a bad 
> pointer for example). 

Vincent,

I'm surprised your open method is being called for a geotiff if your
driver was registered after the geotiff driver.

 > Moreover, my method CreateCopy is never called
> even if GDALCreateCopy is called.

It it possible you assigned your Open method to the pfnCreateCopy
function?

> The platform is Windows XP with GDal 1.6 and visual studio 2005 pro.
> 
> Did I forget something ?

It is really hard to provide advice without the source code.  I'm basically
guessing.

Best regards,
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