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Add 300dpi resolution to exported TIFFs (fixes #5787)

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This commit is contained in:
Flössie 2020-06-16 10:52:56 +02:00
parent c2eb20be70
commit d033dbc810
1 changed files with 13 additions and 0 deletions
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13
rtengine/imageio.cc
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@ -1483,6 +1483,19 @@ int ImageIO::saveTIFF (const Glib::ustring &fname, int bps, bool isFloat, bool u
TIFFSetField (out, TIFFTAG_COMPRESSION, uncompressed ? COMPRESSION_NONE : COMPRESSION_ADOBE_DEFLATE);
TIFFSetField (out, TIFFTAG_SAMPLEFORMAT, (bps == 16 || bps == 32) && isFloat ? SAMPLEFORMAT_IEEEFP : SAMPLEFORMAT_UINT);
[out]()
{
const std::vector<rtexif::Tag*> default_tags = rtexif::ExifManager::getDefaultTIFFTags(nullptr);
TIFFSetField (out, TIFFTAG_XRESOLUTION, default_tags[2]->toDouble());
TIFFSetField (out, TIFFTAG_YRESOLUTION, default_tags[3]->toDouble());
TIFFSetField (out, TIFFTAG_RESOLUTIONUNIT, default_tags[4]->toInt());
for (auto default_tag : default_tags) {
delete default_tag;
}
}();
if (!uncompressed) {
TIFFSetField (out, TIFFTAG_PREDICTOR, (bps == 16 || bps == 32) && isFloat ? PREDICTOR_FLOATINGPOINT : PREDICTOR_HORIZONTAL);
}