Ticket #2115 (closed defect: fixed)

Opened 4 years ago

Last modified 4 years ago

Writing 1bit TIFF files broken.

Reported by: warmerdam Owned by: warmerdam
Priority: high Milestone: 1.5.0
Component: GDAL_Raster Version: 1.5.0 betas/RCs
Severity: normal Keywords: gtiff 1bit
Cc:

Description 

warmerda@gdal64[58]% gdal_translate -co NBITS=1 fax750219.tif ~/out.tif
Input file size is 1728, 2288
0ERROR 1: One bit raster bands are read-only.
...

It appears my move to GDALDatasetCopyWholeRaster() for the GTiff driver broke support for writing 1 bit files. This needs to be fixed in branches/1.5 (possibly for the 1.5 release). The autotest also needs to be extended to include 1bit writing and the HFA driver should be checked to ensure it does not have the same problem.

Change History

Changed 4 years ago by warmerdam

  • status changed from new to assigned
  • milestone set to 1.5.0

I have implemented GTiffBitmapBand::IWriteBlock() to resolve this problem. Committed in trunk (r13408) and 1.5 branch (r13409).

Changed 4 years ago by warmerdam

  • status changed from assigned to closed
  • resolution set to fixed

An autotest for the GTiffBitmapBand read/write case has been incorporated in trunk (r13410).

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