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assume SAMPLEFORMAT_UINT for tiff files when SAMPLEFORMAT_VOID is set

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Ingo Weyrich
2021-02-21 13:32:16 +01:00
parent 9e159deb01
commit 24df5166f2
1 changed files with 5 additions and 2 deletions
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7
rtengine/imageio.cc
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@@ -678,14 +678,17 @@ int ImageIO::getTIFFSampleFormat (const Glib::ustring &fname, IIOSampleFormat &s
return IMIO_VARIANTNOTSUPPORTED; return IMIO_VARIANTNOTSUPPORTED;
} }
if (!TIFFGetField(in, TIFFTAG_SAMPLEFORMAT, &sampleformat)) if (!TIFFGetField(in, TIFFTAG_SAMPLEFORMAT, &sampleformat)) {
/* /*
* WARNING: This is a dirty hack! * WARNING: This is a dirty hack!
* We assume that files which doesn't contain the TIFFTAG_SAMPLEFORMAT tag * We assume that files which doesn't contain the TIFFTAG_SAMPLEFORMAT tag
* (which is the case with uncompressed TIFFs produced by RT!) are RGB files, * (which is the case with uncompressed TIFFs produced by RT!) are RGB files,
* but that may be not true. --- Hombre * but that may be not true. --- Hombre
*/ */
{ sampleformat = SAMPLEFORMAT_UINT;
} else if (sampleformat == SAMPLEFORMAT_VOID) {
// according to https://www.awaresystems.be/imaging/tiff/tifftags/sampleformat.html
// we assume SAMPLEFORMAT_UINT if SAMPLEFORMAT_VOID is set
sampleformat = SAMPLEFORMAT_UINT; sampleformat = SAMPLEFORMAT_UINT;
} }