[directfb-dev] Re: Surfaces from memory images?

[Denis Oliver Kropp <dok@convergence.de>]

Quoting Tobias Hunger (tobias@berlin-consortium.org):
> I need to load images out of memory sometimes. I have a void pointer to it 
> (plus the other information I need, such as width, height, bpp, color 
> encoding). How can I render that image to a surface?

The current method is to create a normal surface, lock it and copy your
data into it, line by line taking care of the pitch. Then unlock it.

> It would be great if that could be added either as an option to create 
> surfaces (aka CreateSurfaceFromMemory), ...

This thing is really needed, especially for the avifile provider,
because avifile creates a buffer itself and the current avifile provider
wraps a pseudo core surface around it, that is a bit tricky and not easy
to maintain if we change the internal structure of surfaces.

But it should not be called CreateSurfaceFromMemory but a data entry
should be added to the surface description and you enable it with a flag.

-- 
Denis Oliver Kropp
( convergence           )
( integrated media gmbh )


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