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AFF:
Setting maxsize with AFF files will have no effect, because AFF
files are by definition not split. If you want a split AFF file,
you must use AFD files (AFD is a directory with a .afd extension
that holds multiple AFF files).
AFM:
The size of AFM split files is stored in af->maxsize (also ap->sr->maxsize).
This value is determined by multiplying the AF_PAGESIZE (which defaults to
AFF_DEFAULT_PAGESIZ, currently 1024*1024*16) by AF_PAGES_PER_RAW_IMAGE_FILE.
By default, AF_PAGES_PER_RAW_IMAGE_FILE is not set. This means that, by default,
AFM files are not split but consist of a single raw file and a single AFM file
(which holds the metadata for the raw file).
You can set AF_PAGES_PER_RAW image like this:
int64_t pages_per_file = 128;
af_update_segq (af, AF_PAGES_PER_RAW_IMAGE_FILE, pages_per_file);
AFM files that are created by aimage do have this value set,
however: it is set to 2^31.
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