Memory allocation failure

Hello all,



I am writing a Windows plug-in, and I am having trouble with allocating memory. Essentially, the code performs a very complex operation on the image, so 9 buffer planes are required as scratch memory. The problem occurs when the image that a user tries to process is big, say 10 mega pixels or more. A Photoshop error pops up saying ''Could not complete the command because of a program error''.



The error occurs in the 'FilterRecord-%26gt;bufferProcs-%26gt;allocateProc' procedure. It simply fails, hence the problem must be allocating the memory. So I tried to replace this with a call to a good old malloc, but trying to allocate the 9 planes will fail, because malloc returns a NULL pointer.



Now the weird thing is that processing a single 10MB will fail, whereas I can process seven or eight 8MB images without a complaint from Photoshop. Furthermore, with those seven or eight 8MB still open in Photoshop, I can process a 20MB image with a command-line equivalent of the plug-in. So in a nutshell, there is enough memory (my computer has 2 GB), so what is going on? I could maybe understand that Photoshop refuses to allocate such memory for some reasons, but why does the malloc in the plug-in fail?! Especially since the malloc in the command-line equivalent succeeds without a problem for an image TWICE bigger?!



I would greatly appreciate any comments/ideas/suggestions.



Thanks in advance



Alex
Memory allocation failure
Hi,



have you tried to tell Photoshop in advance how many memory you will need? SetMaxSpace or something like that. (it's in te dissolve example)



I had no problems to allocate a few MB via new-operator (c++).