Mathis/sharp
1
0
Fork 0
mirror of https://github.com/lovell/sharp.git synced 2026-02-09 16:16:16 +01:00
Code Issues Packages Projects Releases Wiki Activity

Expose linear transform feature of libvips (#1024)

Browse Source
This commit is contained in:
Marcel
2018-02-04 11:36:04 +01:00
committed by Lovell Fuller
parent 73edfb3d2c
commit d599d1f29e
15 changed files with 156 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
src/pipeline.cc
View File

@@ -644,6 +644,11 @@ class PipelineWorker : public Nan::AsyncWorker {
image = sharp::Gamma(image, baton->gamma);
}
// Linear adjustment (a * in + b)
if (baton->linearA != 1.0 || baton->linearB != 0.0) {
image = sharp::Linear(image, baton->linearA, baton->linearB);
}
// Apply normalisation - stretch luminance to cover full dynamic range
if (baton->normalise) {
image = sharp::Normalise(image);
@@ -1185,6 +1190,8 @@ NAN_METHOD(pipeline) {
baton->thresholdGrayscale = AttrTo<bool>(options, "thresholdGrayscale");
baton->trimTolerance = AttrTo<int32_t>(options, "trimTolerance");
baton->gamma = AttrTo<double>(options, "gamma");
baton->linearA = AttrTo<double>(options, "linearA");
baton->linearB = AttrTo<double>(options, "linearB");
baton->greyscale = AttrTo<bool>(options, "greyscale");
baton->normalise = AttrTo<bool>(options, "normalise");
baton->useExifOrientation = AttrTo<bool>(options, "useExifOrientation");