/*
  Based on zlib license - see http://www.gzip.org/zlib/zlib_license.html

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  "Philip D. Bober" <wildfire1138@mchsi.com>

  Keyword support added 12-26-2009 by Gregory Smith
 */
#ifndef __IMG_SAVETOPNG_H__
#define __IMG_SAVETOPNG_H__

#include <SDL2/SDL.h>

#ifdef __cplusplus
extern "C" {
#endif

#define IMG_COMPRESS_OFF 0
#define IMG_COMPRESS_MAX 9
#define IMG_COMPRESS_DEFAULT -1

struct IMG_PNG_text
{
	char* key;
	char* value;
};

/**
 * Takes a filename, a surface to save, and a compression level.  The
 * compression level can be 0(min) through 9(max), or -1(default).
 */
DECLSPEC int SDLCALL    aoIMG_SavePNG(const char  *file,
                                    SDL_Surface *surf,
                                    int          compression,
				    struct IMG_PNG_text* text,
				    int num_text);
/**
 * Takes a SDL_RWops pointer, a surface to save, and a compression level.
 * compression can be 0(min) through 9(max), or -1(default).
 */
DECLSPEC int SDLCALL aoIMG_SavePNG_RW(SDL_RWops   *src,
                                    SDL_Surface *surf,
                                    int          compression,
				    struct IMG_PNG_text* text,
				    int num_text);
#ifdef __cplusplus
}
#endif

#endif/*__IMG_SAVETOPNG_H__*/
