Andrew,
cf CPLVirtualMemFileMapNew() (
https://gdal.org/doxygen/cpl__virtualmem_8h.html#a02ab08b2cf138fa69d076ccd81eda3cb
) which was an implementation step of
https://gdal.org/development/rfc/rfc45_virtualmem.html
RawRasterBand::GetVirtualMemAuto()
(https://github.com/OSGeo/gdal/blob/83425621471d4987087317999d6fff3a482da88f/gcore/rawdataset.cpp#L1522)
may be of interest
Even
Le 05/09/2023 à 08:39, Andrew C Aitchison a écrit :
Drivers work with VSILFILE objects.
Sometimes these are real files but as I understand it,
sometimes these are actually blocks of memory behind a file interface.
Is the reverse possible, ie can I mmap a VSILFILE and then
read it as if it were a block of memory ?
This would be for read-only drivers.
There will inevitably be endian issues, but I have come across
several file formats that look to me to be designed to be read
this way, especially the header structures.
Thanks,
--
http://www.spatialys.com
My software is free, but my time generally not.
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