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/* LiquidRescaling Library
* Copyright (C) 2007-2009 Carlo Baldassi (the "Author") <carlobaldassi@gmail.com>.
* All Rights Reserved.
*
* This library implements the algorithm described in the paper
* "Seam Carving for Content-Aware Image Resizing"
* by Shai Avidan and Ariel Shamir
* which can be found at http://www.faculty.idc.ac.il/arik/imret.pdf
*
* This program 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; version 3 dated June, 2007.
* 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 Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>
*/
#ifndef __LQR_ENERGY_PUB_H__
#define __LQR_ENERGY_PUB_H__
#ifndef __LQR_BASE_H__
#error "lqr_base.h must be included prior to lqr_energy_pub.h"
#endif /* __LQR_BASE_H__ */
#ifndef __LQR_READER_WINDOW_PUB_H__
#error "lqr_rwindow_pub.h must be included prior to lqr_energy_pub.h"
#endif /* __LQR_READER_WINDOW_PUB_H__ */
enum _LqrEnergyFuncBuiltinType {
LQR_EF_GRAD_NORM, /* gradient norm : sqrt(x^2 + y^2) */
LQR_EF_GRAD_SUMABS, /* sum of absulte values : |x| + |y| */
LQR_EF_GRAD_XABS, /* x absolute value : |x| */
LQR_EF_LUMA_GRAD_NORM, /* gradient norm : sqrt(x^2 + y^2) */
LQR_EF_LUMA_GRAD_SUMABS, /* sum of absulte values : |x| + |y| */
LQR_EF_LUMA_GRAD_XABS, /* x absolute value : |x| */
LQR_EF_NULL /* 0 */
};
typedef enum _LqrEnergyFuncBuiltinType LqrEnergyFuncBuiltinType;
typedef gfloat (*LqrEnergyFunc) (gint x, gint y, gint img_width, gint img_height, LqrReadingWindow *rwindow,
gpointer extra_data);
LQR_PUBLIC LqrRetVal lqr_carver_set_energy_function_builtin(LqrCarver *r, LqrEnergyFuncBuiltinType ef_ind);
LQR_PUBLIC LqrRetVal lqr_carver_set_energy_function(LqrCarver *r, LqrEnergyFunc en_func, gint radius,
LqrEnergyReaderType reader_type, gpointer extra_data);
LQR_PUBLIC LqrRetVal lqr_carver_get_energy(LqrCarver *r, gfloat *buffer, gint orientation);
LQR_PUBLIC LqrRetVal lqr_carver_get_true_energy(LqrCarver *r, gfloat *buffer, gint orientation);
LQR_PUBLIC LqrRetVal lqr_carver_get_energy_image(LqrCarver *r, void *buffer, gint orientation, LqrColDepth col_depth,
LqrImageType image_type);
#endif /* __LQR_ENERGY_PUB_H__ */
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