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/** \file
*
* \author Copyright 2001 Lutz Mueller <lutz@users.sf.net>
*
* \note
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* \note
* This library 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
* Lesser General Public License for more details.
*
* \note
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#ifndef __BAYER_H__
#define __BAYER_H__
/**
* \brief how the bayer CCD array is layed out
*
* This enumeration defines how the CCD bayer array is laid out.
*/
typedef enum {
BAYER_TILE_RGGB = 0, /**< \brief raster is RG,GN */
BAYER_TILE_GRBG = 1, /**< \brief raster is GR,BG */
BAYER_TILE_BGGR = 2, /**< \brief raster is BG,GR */
BAYER_TILE_GBRG = 3, /**< \brief raster is RG,GB */
BAYER_TILE_RGGB_INTERLACED = 4, /**< \brief scanline order: R1,G1,R2,G2,...,G1,B1,G2,B2,... */
BAYER_TILE_GRBG_INTERLACED = 5, /**< \brief scanline order: G1,R1,R2,G2,...,B1,G1,B2,G2,... */
BAYER_TILE_BGGR_INTERLACED = 6, /**< \brief scanline order: B1,G1,R2,G2,...,G1,R1,G2,R2,... */
BAYER_TILE_GBRG_INTERLACED = 7, /**< \brief scanline order: G1,B1,G2,B2,...,R1,G1,R2,G2,... */
} BayerTile;
int gp_bayer_expand (unsigned char *input, int w, int h, unsigned char *output,
BayerTile tile);
int gp_bayer_decode (unsigned char *input, int w, int h, unsigned char *output,
BayerTile tile);
int gp_bayer_interpolate (unsigned char *image, int w, int h, BayerTile tile);
/*
* The following two functions use an alternative procedure called Adaptive
* Homogeneity-directed demosaicing instead of the standard bilinear
* interpolation with basic edge-detection method used in the previous two
* functions. To use or test this method of Bayer interpolation, just use
* gp_ahd_decode() in the same way and in the same place as gp_bayer_decode()
* is used.
*/
int gp_ahd_decode (unsigned char *input, int w, int h, unsigned char *output,
BayerTile tile);
int gp_ahd_interpolate (unsigned char *image, int w, int h, BayerTile tile);
#endif /* __BAYER_H__ */
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