Epeg.h

#ifndef _EPEG_H
#define _EPEG_H

#ifdef EAPI
#undef EAPI
#endif
#ifdef WIN32
# ifdef BUILDING_DLL
#  define EAPI __declspec(dllexport)
# else
#  define EAPI __declspec(dllimport)
# endif
#else
# ifdef __GNUC__
#  if __GNUC__ >= 4
#   define EAPI __attribute__ ((visibility("default")))
#  else
#   define EAPI
#  endif
# else
#  define EAPI
# endif
#endif

#ifdef __cplusplus
extern "C" {
#endif

    typedef enum _Epeg_Colorspace
    {
        EPEG_GRAY8,
        EPEG_YUV8,
        EPEG_RGB8,
        EPEG_BGR8,
        EPEG_RGBA8,
        EPEG_BGRA8,
        EPEG_ARGB32,
        EPEG_CMYK
    }
    Epeg_Colorspace;

    typedef enum _Epeg_Transform {
        EPEG_TRANSFORM_NONE,       /* no transformation */
        EPEG_TRANSFORM_FLIP_H,     /* horizontal flip */
        EPEG_TRANSFORM_FLIP_V,     /* vertical flip */
        EPEG_TRANSFORM_TRANSPOSE,  /* transpose across UL-to-LR axis */
        EPEG_TRANSFORM_TRANSVERSE, /* transpose across UR-to-LL axis */
        EPEG_TRANSFORM_ROT_90,     /* 90-degree clockwise rotation */
        EPEG_TRANSFORM_ROT_180,    /* 180-degree rotation */
        EPEG_TRANSFORM_ROT_270     /* 270-degree clockwise (or 90 ccw) */
    }
    Epeg_Transform;

    typedef struct _Epeg_Image          Epeg_Image;
    typedef struct _Epeg_Thumbnail_Info Epeg_Thumbnail_Info;

    struct _Epeg_Thumbnail_Info {
        char                   *uri;
        unsigned long long int  mtime;
        int                     w, h;
        char                   *mimetype;
    };

    EAPI Epeg_Image   *epeg_file_open                 (const char *file);
    EAPI Epeg_Image   *epeg_memory_open               (unsigned char *data, int size);
    EAPI void          epeg_size_get                  (Epeg_Image *im, int *w, int *h);
    EAPI void          epeg_decode_size_set           (Epeg_Image *im, int w, int h);
    EAPI void          epeg_colorspace_get            (Epeg_Image *im, int *space);
    EAPI void          epeg_decode_colorspace_set     (Epeg_Image *im, Epeg_Colorspace colorspace);
    EAPI void          epeg_transform_set             (Epeg_Image *im, Epeg_Transform transform);
    EAPI const void   *epeg_pixels_get                (Epeg_Image *im, int x, int y, int w, int h);
    EAPI void          epeg_pixels_free               (Epeg_Image *im, const void *data);
    EAPI const char   *epeg_comment_get               (Epeg_Image *im);
    EAPI void          epeg_thumbnail_comments_get    (Epeg_Image *im, Epeg_Thumbnail_Info *info);
    EAPI void          epeg_comment_set               (Epeg_Image *im, const char *comment);
    EAPI void          epeg_quality_set               (Epeg_Image *im, int quality);
    EAPI void          epeg_thumbnail_comments_enable (Epeg_Image *im, int onoff);
    EAPI void          epeg_file_output_set           (Epeg_Image *im, const char *file);
    EAPI void          epeg_memory_output_set         (Epeg_Image *im, unsigned char **data, int *size);
    EAPI int           epeg_encode                    (Epeg_Image *im);
    EAPI int           epeg_transform                 (Epeg_Image *im);
    EAPI int           epeg_trim                      (Epeg_Image *im);
    EAPI void          epeg_error                     (Epeg_Image *im, char* buffer);
    EAPI void          epeg_close                     (Epeg_Image *im);

#ifdef __cplusplus
}
#endif

#endif