[PATCH] windowscodecs: Implement WICCreateBitmapFromSection.

[Dmitry Timoshkov]

Hans Leidekker <hans at codeweavers.com> wrote:

> On Thu, 2018-03-15 at 22:40 +0800, Dmitry Timoshkov wrote:
> > Hans Leidekker <hans at codeweavers.com> wrote:
> > 
> > > > +    buffer = MapViewOfFile(section, access, 0, offset, 0);
> > > > +    if (!buffer) return HRESULT_FROM_WIN32(GetLastError());
> > > 
> > > MapViewOfFile wants a multiple of the allocation granularity for the
> > > offset. Does WICCreateBitmapFromSectionEx have the same constraint?
> > 
> > I would be very much surprised if it doesn't, a passed in section
> > handle implies using MapViewOfFile to access the bitmap bits.
> 
> It could also map at the base and store the offset.

At the moment I'm not well enough prepared to write a test case, but
feel free to write one. I'd still assume based on syntax similarity
of MapViewOfFile and WICCreateBitmapFromSection that the latter is
modelled around the former one.

-- 
Dmitry.