openjpeg/applications/jpip/libopenjpip/imgreg_manager.h

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/*
* $Id: imgreg_manager.h 44 2011-02-15 12:32:29Z kaori $
*
* Copyright (c) 2002-2011, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
* Copyright (c) 2002-2011, Professor Benoit Macq
* Copyright (c) 2010-2011, Kaori Hagihara
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef IMGREG_MANAGER_H_
# define IMGREG_MANAGER_H_
/** image region parameters */
typedef struct imgreg_param{
int xosiz, yosiz; /** offset from the origin of the reference grid
at the decomposition level */
int fx, fy; /** frame size (fsiz) */
int ox, oy; /** offset (roff) */
int sx, sy; /** region size (rsiz) */
int level; /** decomposition level */
} imgreg_param_t;
/**
* map view-window requests to codestream image resolutions and regions
*
* @param[in] fx,fy frame size
* @param[in] rx,ry offset of region
* @param[in] rw,rh size of region
* @param[in] XOsiz,YOsiz offset from the origin of the reference grid to the left side of the image area
* @param[in] Xsiz,Ysiz size of the reference grid
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* @param[in] numOfreslev number of resolution levels
* @return structure of image region parameters
*/
imgreg_param_t map_viewin2imgreg( const int fx, const int fy,
const int rx, const int ry,
const int rw, const int rh,
const int XOsiz, const int YOsiz,
const int Xsiz, const int Ysiz,
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const int numOfreslev);
/**
* find deconposition level and its resolution size
* C.4.1 Mapping view-window requests to codestream image resolution
* and regions
* Note: only round-down implemented
*
* @param[in] maxlev maximum decomposition level
* @param[in/out] lev decomposition level pointer
* @param[in/out] fx horizontal frame size pointer
* @param[in/out] fy vertical frame size pointer
* @param[in/out] xmin horizontal image offset pointer
* @param[in/out] ymin vertical image offset pointer
* @param[in/out] xmax horizontal image size pointer
* @param[in/out] ymax vertical image size pointer
*/
void find_level( int maxlev, int *lev, int *fx, int *fy, int *xmin, int *ymin, int *xmax, int *ymax);
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/**
* compute decomposition level (only to get the level
* use find_level for all parameters
*
* @param[in] fx horizontal frame size
* @param[in] fy vertical frame size
* @param[in] Xsiz image width
* @param[in] Ysiz image height
* @return decomposition level
*/
int comp_decomplev( int fw, int fh, int Xsiz, int Ysiz);
/**
* print image region parameters
*
* @param[in] imgreg image region structure of parameters
*/
void print_imgreg( imgreg_param_t imgreg);
#endif /* !IMGREG_MANAGER_H_ */