/Users/jab/Documents/Teaching/02585/GEL2_and_demos/GEL/src/GLGraphics/image_helper.h

/*
    Jonathan Dummer

    Image helper functions

    MIT license
*/

#ifndef HEADER_IMAGE_HELPER
#define HEADER_IMAGE_HELPER

#ifdef __cplusplus
extern "C" {
#endif

int
        up_scale_image
        (
                const unsigned char* const orig,
                int width, int height, int channels,
                unsigned char* resampled,
                int resampled_width, int resampled_height
        );

int
        mipmap_image
        (
                const unsigned char* const orig,
                int width, int height, int channels,
                unsigned char* resampled,
                int block_size_x, int block_size_y
        );

int
        scale_image_RGB_to_NTSC_safe
        (
                unsigned char* orig,
                int width, int height, int channels
        );

int
        convert_RGB_to_YCoCg
        (
                unsigned char* orig,
                int width, int height, int channels
        );

int
        convert_YCoCg_to_RGB
        (
                unsigned char* orig,
                int width, int height, int channels
        );

int
        RGBE_to_RGBdivA
        (
                unsigned char *image,
                int width, int height,
                int rescale_to_max
        );

int
        RGBE_to_RGBdivA2
        (
                unsigned char *image,
                int width, int height,
                int rescale_to_max
        );

#ifdef __cplusplus
}
#endif

#endif /* HEADER_IMAGE_HELPER   */