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47927ef47d
Affects interpolators with 4x4+ window size e.g. Bicubic, LBB, Nohalo Introduces blur before large affine to improve large PNG reductions
54 lines
1.2 KiB
C++
Executable File
54 lines
1.2 KiB
C++
Executable File
#ifndef SHARP_COMMON_H
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#define SHARP_COMMON_H
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typedef enum {
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UNKNOWN,
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JPEG,
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PNG,
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WEBP,
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TIFF,
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MAGICK
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} ImageType;
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// Filename extension checkers
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bool is_jpeg(std::string const &str);
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bool is_png(std::string const &str);
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bool is_webp(std::string const &str);
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bool is_tiff(std::string const &str);
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// How many tasks are in the queue?
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extern volatile int counter_queue;
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// How many tasks are being processed?
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extern volatile int counter_process;
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/*
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Initialise a VipsImage from a buffer. Supports JPEG, PNG and WebP.
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Returns the ImageType detected, if any.
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*/
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ImageType
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sharp_init_image_from_buffer(VipsImage **image, void *buffer, size_t const length, VipsAccess const access);
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/*
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Initialise a VipsImage from a file.
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Returns the ImageType detected, if any.
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*/
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ImageType
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sharp_init_image_from_file(VipsImage **image, char const *file, VipsAccess const access);
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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
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sharp_image_has_alpha(VipsImage *image);
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/*
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Returns the window size for the named interpolator. For example,
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a window size of 3 means a 3x3 pixel grid is used for the calculation.
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*/
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int
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sharp_interpolator_window_size(char const *name);
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#endif
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