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Add support for TIFF float predictor

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Lovell Fuller
2017-04-01 10:08:47 +01:00
parent 27fb864ac4
commit 088d36b47b
2 changed files with 58 additions and 50 deletions
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4
src/pipeline.cc
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@@ -838,6 +838,10 @@ class PipelineWorker : public Nan::AsyncWorker {
->set("alpha_q", baton->webpAlphaQuality));
baton->formatOut = "webp";
} else if (baton->formatOut == "tiff" || isTiff || (matchInput && inputImageType == ImageType::TIFF)) {
// Cast pixel values to float, if required
if (baton->tiffPredictor == VIPS_FOREIGN_TIFF_PREDICTOR_FLOAT) {
image = image.cast(VIPS_FORMAT_FLOAT);
}
// Write TIFF to file
image.tiffsave(const_cast<char*>(baton->fileOut.data()), VImage::option()
->set("strip", !baton->withMetadata)