106 lines
3.8 KiB
C
106 lines
3.8 KiB
C
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/*
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* http://pngquant.org
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*/
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#ifndef LIBIMAGEQUANT_H
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#define LIBIMAGEQUANT_H
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#ifndef LIQ_EXPORT
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#define LIQ_EXPORT extern
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#endif
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#ifndef LIQ_PRIVATE
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#if defined(__GNUC__) || defined (__llvm__)
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#define LIQ_PRIVATE __attribute__((visibility("hidden")))
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#else
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#define LIQ_PRIVATE
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#endif
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stddef.h>
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typedef struct liq_attr liq_attr;
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typedef struct liq_image liq_image;
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typedef struct liq_result liq_result;
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typedef struct liq_color {
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unsigned char r, g, b, a;
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} liq_color;
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typedef struct liq_palette {
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unsigned int count;
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liq_color entries[256];
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} liq_palette;
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typedef enum liq_error {
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LIQ_OK = 0,
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LIQ_QUALITY_TOO_LOW = 99,
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LIQ_VALUE_OUT_OF_RANGE = 100,
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LIQ_OUT_OF_MEMORY,
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LIQ_NOT_READY,
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LIQ_BITMAP_NOT_AVAILABLE,
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LIQ_BUFFER_TOO_SMALL,
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LIQ_INVALID_POINTER,
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} liq_error;
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enum liq_ownership {LIQ_OWN_ROWS=4, LIQ_OWN_PIXELS=8};
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LIQ_EXPORT liq_attr* liq_attr_create(void);
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LIQ_EXPORT liq_attr* liq_attr_create_with_allocator(void* (*malloc)(size_t), void (*free)(void*));
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LIQ_EXPORT liq_attr* liq_attr_copy(liq_attr* orig);
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LIQ_EXPORT void liq_attr_destroy(liq_attr* attr);
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LIQ_EXPORT liq_error liq_set_max_colors(liq_attr* attr, int colors);
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LIQ_EXPORT int liq_get_max_colors(const liq_attr* attr);
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LIQ_EXPORT liq_error liq_set_speed(liq_attr* attr, int speed);
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LIQ_EXPORT int liq_get_speed(const liq_attr* attr);
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LIQ_EXPORT liq_error liq_set_min_opacity(liq_attr* attr, int min);
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LIQ_EXPORT int liq_get_min_opacity(const liq_attr* attr);
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LIQ_EXPORT liq_error liq_set_min_posterization(liq_attr* attr, int bits);
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LIQ_EXPORT int liq_get_min_posterization(const liq_attr* attr);
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LIQ_EXPORT liq_error liq_set_quality(liq_attr* attr, int minimum, int maximum);
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LIQ_EXPORT int liq_get_min_quality(const liq_attr* attr);
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LIQ_EXPORT int liq_get_max_quality(const liq_attr* attr);
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LIQ_EXPORT void liq_set_last_index_transparent(liq_attr* attr, int is_last);
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typedef void liq_log_callback_function(const liq_attr*, const char* message, void* user_info);
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typedef void liq_log_flush_callback_function(const liq_attr*, void* user_info);
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LIQ_EXPORT void liq_set_log_callback(liq_attr*, liq_log_callback_function*, void* user_info);
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LIQ_EXPORT void liq_set_log_flush_callback(liq_attr*, liq_log_flush_callback_function*, void* user_info);
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LIQ_EXPORT liq_image* liq_image_create_rgba_rows(liq_attr* attr, void* rows[], int width, int height, double gamma);
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LIQ_EXPORT liq_image* liq_image_create_rgba(liq_attr* attr, void* bitmap, int width, int height, double gamma);
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typedef void liq_image_get_rgba_row_callback(liq_color row_out[], int row, int width, void* user_info);
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LIQ_EXPORT liq_image* liq_image_create_custom(liq_attr* attr, liq_image_get_rgba_row_callback* row_callback, void* user_info, int width, int height, double gamma);
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LIQ_EXPORT liq_error liq_image_set_memory_ownership(liq_image* image, int ownership_flags);
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LIQ_EXPORT int liq_image_get_width(const liq_image* img);
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LIQ_EXPORT int liq_image_get_height(const liq_image* img);
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LIQ_EXPORT void liq_image_destroy(liq_image* img);
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LIQ_EXPORT liq_result* liq_quantize_image(liq_attr* options, liq_image* input_image);
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LIQ_EXPORT liq_error liq_set_dithering_level(liq_result* res, float dither_level);
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LIQ_EXPORT liq_error liq_set_output_gamma(liq_result* res, double gamma);
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LIQ_EXPORT double liq_get_output_gamma(const liq_result* result);
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LIQ_EXPORT const liq_palette* liq_get_palette(liq_result* result);
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LIQ_EXPORT liq_error liq_write_remapped_image(liq_result* result, liq_image* input_image, void* buffer, size_t buffer_size);
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LIQ_EXPORT liq_error liq_write_remapped_image_rows(liq_result* result, liq_image* input_image, unsigned char** row_pointers);
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LIQ_EXPORT double liq_get_quantization_error(liq_result* result);
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LIQ_EXPORT int liq_get_quantization_quality(liq_result* result);
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LIQ_EXPORT void liq_result_destroy(liq_result*);
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#ifdef __cplusplus
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}
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#endif
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#endif
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