On 6/27/2010 10:59 AM, Kartik Thakore wrote:
Hi Ok I looked at get_dataref. But I still don't understand why the surface->pixels is swaped out when a piddle is written. Both of the Devel::Peek for the get_dataref and surface->get_pixels is the exact same.
get_dataref is a perl reference to the data section of the piddle. The surface->pixels is just a pointer to the pixel data. I see no copying of data in the code so it doesn't seem like they should be the same. I notice on the page you reference for the XS stuff that there is a surface_new_from routine. Have you tried creating a piddle of data the size and structure of the surface and then creating the desired surface from that? At least you would have all the surface and piddle data in the same spot which seems to be your difficulty here. --Chris
On Sun, Jun 27, 2010 at 1:32 AM, Chris Marshall <c...@alum.mit.edu <mailto:c...@alum.mit.edu>> wrote: On 6/26/2010 10:49 PM, Kartik Thakore wrote: Right but where is the piddle xs code? It is in Basic/Core in the PDL directory. The piddle data is in the string of the perl scalar. That way it gets the advantage of the perl memory allocation/freeing... --Chris On Sat, Jun 26, 2010 at 10:35 PM, Chris Marshall <c...@alum.mit.edu <mailto:c...@alum.mit.edu> <mailto:c...@alum.mit.edu <mailto:c...@alum.mit.edu>>> wrote: On 6/26/2010 10:10 PM, Kartik Thakore wrote: What SV_type is getdata_ref using? where can I find that? You can get a copy of the PDL source from CPAN and that should explain things. --Chris No virus found in this incoming message. Checked by AVG - www.avg.com <http://www.avg.com> Version: 9.0.830 / Virus Database: 271.1.1/2964 - Release Date: 06/26/10 02:35:00 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.830 / Virus Database: 271.1.1/2966 - Release Date: 06/27/10 02:35:00