/* Copyright (C) 2001-2020 Artifex Software, Inc.
   All Rights Reserved.

   This software is provided AS-IS with no warranty, either express or
   implied.

   This software is distributed under license and may not be copied,
   modified or distributed except as expressly authorized under the terms
   of the license contained in the file LICENSE in this distribution.

   Refer to licensing information at http://www.artifex.com or contact
   Artifex Software, Inc.,  1305 Grant Avenue - Suite 200, Novato,
   CA 94945, U.S.A., +1(415)492-9861, for further information.
*/


/* Interface to routines for "flipping" image data */

#ifndef gsflip_INCLUDED
#  define gsflip_INCLUDED

#include "stdpre.h"

/*
 * Convert planar (MultipleDataSource) input to chunky format.  The input
 * data starts at planes[0] + offset ... planes[num_planes-1] + offset; the
 * output is stored at buffer.  This procedure assumes that the input
 * consists of an integral number of pixels; in particular, for 12-bit
 * input, nbytes is rounded up to a multiple of 3.  num_planes must be >=0;
 * bits_per_sample must be 1, 2, 4, 8, or 12.  Returns -1 if num_planes or
 * bits_per_sample is invalid, otherwise 0.
 */
extern int image_flip_planes(byte * buffer, const byte ** planes,
                             int offset, int nbytes,
                             int num_planes, int bits_per_sample);

#endif /* gsflip_INCLUDED */
