1 /* Copyright (C) 1996, 1999 Aladdin Enterprises. All rights reserved. 2 3 This software is provided AS-IS with no warranty, either express or 4 implied. 5 6 This software is distributed under license and may not be copied, 7 modified or distributed except as expressly authorized under the terms 8 of the license contained in the file LICENSE in this distribution. 9 10 For more information about licensing, please refer to 11 http://www.ghostscript.com/licensing/. For information on 12 commercial licensing, go to http://www.artifex.com/licensing/ or 13 contact Artifex Software, Inc., 101 Lucas Valley Road #110, 14 San Rafael, CA 94903, U.S.A., +1(415)492-9861. 15 */ 16 17 /* $Id: gsflip.h,v 1.5 2002/06/16 08:45:42 lpd Exp $ */ 18 /* Interface to routines for "flipping" image data */ 19 20 #ifndef gsflip_INCLUDED 21 # define gsflip_INCLUDED 22 23 /* 24 * Convert planar (MultipleDataSource) input to chunky format. The input 25 * data starts at planes[0] + offset ... planes[num_planes-1] + offset; the 26 * output is stored at buffer. This procedure assumes that the input 27 * consists of an integral number of pixels; in particular, for 12-bit 28 * input, nbytes is rounded up to a multiple of 3. num_planes must be >=0; 29 * bits_per_sample must be 1, 2, 4, 8, or 12. Returns -1 if num_planes or 30 * bits_per_sample is invalid, otherwise 0. 31 */ 32 extern int image_flip_planes(byte * buffer, const byte ** planes, 33 int offset, int nbytes, 34 int num_planes, int bits_per_sample); 35 36 #endif /* gsflip_INCLUDED */ 37