Opened 15 years ago

Closed 15 years ago

#2255 closed defect (fixed)

JP2KAK driver cannot write to /vsimem

Reported by: warmerdam Owned by: warmerdam
Priority: normal Milestone: 1.5.1
Component: GDAL_Raster Version: unspecified
Severity: normal Keywords: jp2kak vsil


The JP2KAK driver does not support reading and writing files through VSI*L, and thus does not support in memory or other virtualized dataset access.

Change History (3)

comment:1 by warmerdam, 15 years ago

Status: newassigned

Implement reading and writing via VSI*L API in trunk (r13918) and added a test (r13917).

Note, the trunk jp2kakdataset now assumes at least Kakadu 4.2.

The read through vsi*l only kicks in if poOpenInfo->fp is NULL. So conventional file access will normally be used, and VSI*L will essentially only be used for virtual files of some sort, or files larger than 2GB (such as VSIFOpen() failed). I did this because there was some evidence that going through VSI*L might be making things slightly slower.

Writing is always through VSI*L for simplicity since performance is likely less of a concern in this case (and the perf. diff is very small anyways).

comment:2 by warmerdam, 15 years ago

Milestone: 1.5.1

A narrower version of the change which doesn't touch all the KAKADU4 if'defs nor do other cleanup has been applied in the 1.4-esri branch (r13920).

I will attempt to apply a similar change in 1.5 branch...

comment:3 by warmerdam, 15 years ago

Resolution: fixed
Status: assignedclosed

Fixed in 1.5 branch as well (r13921).

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