73 lines
2.8 KiB
C
73 lines
2.8 KiB
C
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/*
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* Copyright (c) 2001-2002, David Janssens
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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 __PI_H
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#define __PI_H
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#include "j2k.h"
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#include "tcd.h"
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typedef struct {
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int pdx, pdy;
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int pw, ph;
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} pi_resolution_t;
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typedef struct {
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int dx, dy;
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int numresolutions;
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pi_resolution_t *resolutions;
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} pi_comp_t;
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typedef struct {
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short int *include; /* precise if the packet has been already used (usefull for progression order change) */
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int step_l, step_r, step_c, step_p; /* different steps (layer, resolution, component, precinct) to localize the packet in the include vector */
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int compno, resno, precno, layno; /* component, resolution, precinct and layer that indentify the packet */
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int first; /* 0 if the first packet */
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j2k_poc_t poc;
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int numcomps;
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pi_comp_t *comps;
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int tx0, ty0, tx1, ty1;
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int x, y, dx, dy;
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} pi_iterator_t; /* packet iterator */
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/*
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* Create a packet iterator
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* img: raw image for which the packets will be listed
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* cp: coding paremeters
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* tileno: number that identifies the tile for which to list the packets
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* return value: returns a packet iterator that points to the first packet of the tile
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*/
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pi_iterator_t *pi_create(j2k_image_t * img, j2k_cp_t * cp, int tileno);
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/*
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* Modify the packet iterator to point to the next packet
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* pi: packet iterator to modify
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* return value: returns 0 if pi pointed to the last packet or else returns 1
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*/
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int pi_next(pi_iterator_t * pi);
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#endif
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