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1de0038516
Add support for libvips' new native loaders, including GIF and SVG Pre-built binaries now include giflib and librsvg, exclude *magick
114 lines
2.3 KiB
C++
114 lines
2.3 KiB
C++
#ifndef SRC_COMMON_H_
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#define SRC_COMMON_H_
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#include <string>
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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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enum class ImageType {
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JPEG,
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PNG,
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WEBP,
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TIFF,
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GIF,
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SVG,
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PDF,
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MAGICK,
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OPENSLIDE,
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PPM,
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FITS,
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RAW,
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UNKNOWN
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};
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// How many tasks are in the queue?
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extern volatile int counterQueue;
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// How many tasks are being processed?
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extern volatile int counterProcess;
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// Filename extension checkers
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bool IsJpeg(std::string const &str);
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bool IsPng(std::string const &str);
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bool IsWebp(std::string const &str);
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bool IsTiff(std::string const &str);
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bool IsDz(std::string const &str);
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bool IsDzZip(std::string const &str);
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/*
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Provide a string identifier for the given image type.
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*/
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std::string ImageTypeId(ImageType const imageType);
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/*
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Determine image format of a buffer.
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*/
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ImageType DetermineImageType(void *buffer, size_t const length);
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/*
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Determine image format of a file.
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*/
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ImageType DetermineImageType(char const *file);
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/*
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Does this image have an embedded profile?
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*/
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bool HasProfile(VImage image);
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/*
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Does this image have an alpha channel?
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Uses colour space interpretation with number of channels to guess this.
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*/
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bool HasAlpha(VImage image);
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/*
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Get EXIF Orientation of image, if any.
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*/
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int ExifOrientation(VImage image);
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/*
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Set EXIF Orientation of image.
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*/
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void SetExifOrientation(VImage image, int const orientation);
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/*
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Remove EXIF Orientation from image.
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*/
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void RemoveExifOrientation(VImage image);
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/*
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Does this image have a non-default density?
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*/
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bool HasDensity(VImage image);
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/*
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Get pixels/mm resolution as pixels/inch density.
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*/
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int GetDensity(VImage image);
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/*
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Set pixels/mm resolution based on a pixels/inch density.
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*/
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void SetDensity(VImage image, const int density);
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/*
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Called when a Buffer undergoes GC, required to support mixed runtime libraries in Windows
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*/
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void FreeCallback(char* data, void* hint);
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/*
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Calculate the (left, top) coordinates of the output image
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within the input image, applying the given gravity.
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*/
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std::tuple<int, int> CalculateCrop(int const inWidth, int const inHeight,
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int const outWidth, int const outHeight, int const gravity);
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} // namespace sharp
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#endif // SRC_COMMON_H_
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