[Dcmlib] FileHelper

Jean-Pierre ROUX jean-pierre.roux at creatis.insa-lyon.fr
Sun Jul 31 08:29:07 CEST 2005


At 10:11 -0400 30/07/05, Aris Basic wrote:
>is it possible to tell file helper to free memory allocated for pixel data ?

Right now, there is no way to do that.
We should add a method -probabely using PixelReadConvertor::Squeeze()-

I think all the gdcm guys are on hollydays (I was just back in Lyon 
for a few hours, and I cannot make any commit from the Internet Café 
...)

> (I read pixel data and i put it in a swap file so i dont need 
>filehelpers pixel data pointer anylonger)

Do you mean you write the pixels into a file, after reading them?
Why don't you delete the FileHelper at this moment?

>
>i tryed deleting a pointer got from GetPixelData :) but that leads 
>to seg fault on destructor.

The FileHelper is not aware that pixels are already deleted; It tries 
again to delete them, and you get the seg fault.
JP

>
>Aris
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  Jean-Pierre ROUX
  CREATIS - CNRS UMR 5515, INSERM U 630
  Laboratoire de Radiologie Experimentale
  Hopital Cardiologique
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