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185fcfe635
Fix includes to keep MSVC compiler happy. Additional memory leak suppressions for latest V8.
50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
#ifndef SRC_OPERATIONS_H_
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#define SRC_OPERATIONS_H_
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#include <tuple>
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#include <vips/vips8>
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using vips::VImage;
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namespace sharp {
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/*
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Alpha composite src over dst with given gravity.
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Assumes alpha channels are already premultiplied and will be unpremultiplied after.
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*/
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VImage Composite(VImage src, VImage dst, const int gravity);
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/*
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* Stretch luminance to cover full dynamic range.
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*/
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VImage Normalize(VImage image);
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/*
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* Gamma encoding/decoding
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*/
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VImage Gamma(VImage image, double const exponent);
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/*
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* Gaussian blur. Use sigma of -1 for fast blur.
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*/
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VImage Blur(VImage image, double const sigma);
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/*
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* Sharpen flat and jagged areas. Use radius of -1 for fast sharpen.
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*/
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VImage Sharpen(VImage image, int const radius, double const flat, double const jagged);
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/*
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Calculate crop area based on image entropy
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*/
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std::tuple<int, int> EntropyCrop(VImage image, int const outWidth, int const outHeight);
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/*
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Calculate the Shannon entropy for an image
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*/
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double Entropy(VImage image);
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} // namespace sharp
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#endif // SRC_OPERATIONS_H_
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