Differential D25645 Diff 70715 kstars/fitsviewer/stretch.h

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kstars/fitsviewer/stretch.h

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69 /** 69​ /**
70 * @brief computeParams Automatically generates and sets stretch parameters from the image. 70​ * @brief computeParams Automatically generates and sets stretch parameters from the image.
71 */ 71​ */
72 StretchParams computeParams(uint8_t *input); 72​ StretchParams computeParams(uint8_t *input);
73 73​
74 /** 74​ /**
75 * @brief run run the stretch algorithm according to the params given 75​ * @brief run run the stretch algorithm according to the params given
76 * placing the output in output_image. 76​ * placing the output in output_image.
77​ * @param input the raw data buffer.
78​ * @param output_image a QImage pointer that should be the same size as the input if
79​ * sampling is 1 otherwise, the proper size if the input is downsampled by sampling.
80​ * @param sampling The sampling parameter. Applies to both width and height.
81​ * Sampling is applied to the output (that is, with sampling=2, we compute every other output
82​ * sample both in width and height, so the output would have about 4X fewer pixels.
77 */ 83​ */
78 void run(uint8_t *input, QImage *output_image); 84​ void run(uint8_t *input, QImage *output_image, int sampling=1);
79 85​
80 private: 86​ private:
87​ // Adjusts input_range for float and double types.
88​ void recalculateInputRange(uint8_t *input);
89​
81 // Inputs. 90​ // Inputs.
82 int image_width; 91​ int image_width;
83 int image_height; 92​ int image_height;
84 int image_channels; 93​ int image_channels;
85 int input_range; 94​ int input_range;
86 int dataType; 95​ int dataType;
87 96​
88 // Parameters. 97​ // Parameters.
89 StretchParams params; 98​ StretchParams params;
90}; 99​};