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<p class="MsoNormal">We can work with the Uint16 case. These dtype limitations should be listed on the gtiff docs presumably.<o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">thomas bonfort <thomas.bonfort@gmail.com><br>
<b>Date: </b>Friday, February 9, 2024 at 9:37 AM<br>
<b>To: </b>"Meyer, Jesse R. (GSFC-618.0)[SCIENCE SYSTEMS AND APPLICATIONS INC]" <jesse.r.meyer@nasa.gov><br>
<b>Cc: </b>"gdal-dev@lists.osgeo.org" <gdal-dev@lists.osgeo.org><br>
<b>Subject: </b>[EXTERNAL] Re: [gdal-dev] GeoTiff JXL sample format & bits per sample restrictions?<o:p></o:p></span></p>
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<p class="MsoNormal">JXL in tiff should support the 2 band case correctly. What is not supported here is the int16 datatype. Only uint8, uint16 and float32 are supported.<o:p></o:p></p>
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<p class="MsoNormal">TB<o:p></o:p></p>
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<p class="MsoNormal">On Fri, Feb 9, 2024 at 3:32 PM Meyer, Jesse R. (GSFC-618.0)[SCIENCE SYSTEMS AND APPLICATIONS INC] via gdal-dev <<a href="mailto:gdal-dev@lists.osgeo.org">gdal-dev@lists.osgeo.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">We are trying to convert a 2 band int16 ZSTD compressed geotiff to JXL compression. However for each band the following error message is given “ERROR 1: GetJXLDataType:Unsupported
combination of SampleFormat and BitsPerSample”.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On GDAL 3.8.3, released 2024/01/04. JXL v0.9.2<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">gdal_translate -ot int16 -co "COMPRESS=JXL" -co "NUM_THREADS=8" -co "TILED=YES" -co "SPARSE_OK=YES" -<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">co "INTERLEAVE=BAND" -co "JXL_LOSSLESS=YES" in.tif out_JXL.tif<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">The docs state an encode limitation for GDAL < 3.6 wrt interleave and band counts. We’re not subject to that, unless there’s a bug, but I do wonder if we have nonetheless gone
off the support path with band interleave with 2 bands?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Jesse<o:p></o:p></p>
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<p class="MsoNormal">_______________________________________________<br>
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