I've posted this question on gis stackexchange, but maybe here is more appropriate.
I am doing the same as in http://gis.stackexchange.com/questions/134000/gdal-api-cant-save-image-in-some-formats That is, saving a `JPEG` image with `GDAL`. I know I'd have to create a `MEM` buffer and then `CreateCopy` to `JPEG`. However, I'd like to avoid the allocation of two buffers since my image might be big and I use my own memory buffer. Is there a way to pass the data memory address that I'd like to use to the MEM driver? I've seen this mysterious article http://www.gdal.org/frmt_mem.html which references the `DATAPOINTER` option. I've seen another reference [here]( https://lists.osgeo.org/pipermail/gdal-dev/2006-November/010583.html) which does sprintf(filename,"MEM:::DATAPOINTER=%d,PIXELS=%d,LINES=%d,BANDS=1,DATATYPE=%d,PIXELOFFSET=0,LINEOFFSET=0,BANDOFFSET=0",datpt,pixels,lines,datatype); dataset = GDALOpen(filename,GA_Update); How would this translate to c++? Maybe papszOptions = CSLSetNameValue( papszOptions, "DATAPOINTER", datapointer ); and so on?
_______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
