103 lines
4.0 KiB
C
103 lines
4.0 KiB
C
/*
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* $Id$
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*
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* Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
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* Copyright (c) 2002-2014, Professor Benoit Macq
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* Copyright (c) 2010-2011, Kaori Hagihara
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef IMGREG_MANAGER_H_
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# define IMGREG_MANAGER_H_
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/** image region parameters */
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typedef struct imgreg_param {
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int xosiz, yosiz; /** offset from the origin of the reference grid
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at the decomposition level */
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int fx, fy; /** frame size (fsiz) */
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int ox, oy; /** offset (roff) */
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int sx, sy; /** region size (rsiz) */
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int level; /** decomposition level */
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} imgreg_param_t;
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/**
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* map view-window requests to codestream image resolutions and regions
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*
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* @param[in] fx,fy frame size
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* @param[in] rx,ry offset of region
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* @param[in] rw,rh size of region
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* @param[in] XOsiz,YOsiz offset from the origin of the reference grid to the left side of the image area
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* @param[in] Xsiz,Ysiz size of the reference grid
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* @param[in] numOfreslev number of resolution levels
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* @return structure of image region parameters
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*/
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imgreg_param_t map_viewin2imgreg(const int fx, const int fy,
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const int rx, const int ry,
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const int rw, const int rh,
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const int XOsiz, const int YOsiz,
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const int Xsiz, const int Ysiz,
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const int numOfreslev);
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/**
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* find deconposition level and its resolution size
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* C.4.1 Mapping view-window requests to codestream image resolution
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* and regions
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* Note: only round-down implemented
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*
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* @param[in] maxlev maximum decomposition level
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* @param[in,out] lev decomposition level pointer
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* @param[in,out] fx horizontal frame size pointer
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* @param[in,out] fy vertical frame size pointer
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* @param[in,out] xmin horizontal image offset pointer
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* @param[in,out] ymin vertical image offset pointer
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* @param[in,out] xmax horizontal image size pointer
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* @param[in,out] ymax vertical image size pointer
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*/
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void find_level(int maxlev, int *lev, int *fx, int *fy, int *xmin, int *ymin,
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int *xmax, int *ymax);
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/**
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* compute decomposition level (only to get the level
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* use find_level for all parameters
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*
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* @param[in] fw horizontal frame size
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* @param[in] fh vertical frame size
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* @param[in] Xsiz image width
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* @param[in] Ysiz image height
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* @return decomposition level
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*/
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int comp_decomplev(int fw, int fh, int Xsiz, int Ysiz);
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/**
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* print image region parameters
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*
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* @param[in] imgreg image region structure of parameters
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*/
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void print_imgreg(imgreg_param_t imgreg);
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#endif /* !IMGREG_MANAGER_H_ */
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