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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
/* Provides facilities for writing pictures and seperate views to .png files */
#ifndef _SCI_GRAPHICS_PNG_H_
#define _SCI_GRAPHICS_PNG_H_
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /* HAVE_CONFIG_H */
#ifdef HAVE_LIBPNG
#include <resource.h>
#include <graphics.h>
#include <png.h>
int
write_pic_png(char *filename, guint8 *pic);
/* Stores a picture map in a png file
** --DEPRECATED--
** Parameters: (filename) The name of the file to create
** (pic) A pointer to the picture map to store
** Returns : (int) 0 on success, != 0 otherwise
** Please note that pic must not point to a picture_t, it must point to a
** map.
** E.g. to store the foreground picture, you could use
** write_pic_png("filename.png", picture->maps[0]).
*/
int
png_save_buffer(picture_t pic, char *name,
int xoffset, int yoffset, int width, int height,
byte *data, int force_8bpp_special);
/* Stores any buffer in a png file
** Parameters: (picture_t) pic: The picture_t containing the parameters of the buffer
** (char *) name: File name to write to
** (int x int) xoffset, yoffset: relative screen position of the buffer
** (int x int) width, height: Buffer size
** (byte *) data: The actual data to write
** (int) force_8bpp_special: See below
** Returns : (int) 0 on success, 1 otherwise
** Each graphics buffer is stored in the way that the corresponding picture_t
** dictates (all buffers are either identical to, or parts of a past representation
** of the picture_t map 0, after all).
** force_8bpp_special overrides this and forces 8bpp palette mode for writing the
** buffer.
** This should only be used for maps 1 through 3, which are always in this format.
*/
byte *
png_load_buffer(picture_t pic, char *name,
int *xoffset, int *yoffset, int *width, int *height,
int *size, int force_8bpp_special);
/* Loads a buffer from a png file
** Parameters: (picture_t) pic: The picture_t containing the target parameters
** (char *) name: The file name of the file to read from
** (int* x int*) xoffset, yoffset: Offset storage pointers
** (int* x int*) width, height: Size storage pointers
** (int*) size: Memory size storage pointer
** (int) force_8bpp_special: Import file as 8bpp with palette
** Returns : (byte *): The buffer on success, NULL otherwise
** xoffset, yoffset, width, height, and size should each point to ints the picture
** parameters are stored in. xoffset and yoffset may be set to NULL, though, in
** order to be omitted.
*/
int
png_save_pic(picture_t pic);
/* Stores a picture_t in the current directory
** Parameters: (picture_t) pic: The picture_t to store
** Returns : (int) 0 on success, 1 otherwise
*/
int
png_load_pic(picture_t pic);
/* Loads a picture_t from the cwd
** Parameters: (picture_t) pic: The structure to write to
** Returns : (int) 0 on success, 1 otherwise
** On error, the original pic status is retained.
*/
#endif /* HAVE_LIBPNG */
#endif /* !_SCI_GRAPHICS_PNG_H_ */
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