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authordan miller2007-10-21 08:36:32 +0000
committerdan miller2007-10-21 08:36:32 +0000
commit2f8d7092bc2c9609fa98d6888106b96f38b22828 (patch)
treeda6c37579258cc965b52a75aee6135fe44237698 /libraries/openjpeg-libsl/libopenjpeg/pi.h
parent* Committing new PolicyManager based on an ACL system. (diff)
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1/*
2 * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
3 * Copyright (c) 2002-2007, Professor Benoit Macq
4 * Copyright (c) 2001-2003, David Janssens
5 * Copyright (c) 2002-2003, Yannick Verschueren
6 * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
7 * Copyright (c) 2005, Herve Drolon, FreeImage Team
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef __PI_H
33#define __PI_H
34/**
35@file pi.h
36@brief Implementation of a packet iterator (PI)
37
38The functions in PI.C have for goal to realize a packet iterator that permits to get the next
39packet following the progression order and change of it. The functions in PI.C are used
40by some function in T2.C.
41*/
42
43/** @defgroup PI PI - Implementation of a packet iterator */
44/*@{*/
45
46/**
47FIXME: documentation
48*/
49typedef struct opj_pi_resolution {
50 int pdx, pdy;
51 int pw, ph;
52} opj_pi_resolution_t;
53
54/**
55FIXME: documentation
56*/
57typedef struct opj_pi_comp {
58 int dx, dy;
59 /** number of resolution levels */
60 int numresolutions;
61 opj_pi_resolution_t *resolutions;
62} opj_pi_comp_t;
63
64/**
65Packet iterator
66*/
67typedef struct opj_pi_iterator {
68 /** Enabling Tile part generation*/
69 char tp_on;
70 /** precise if the packet has been already used (usefull for progression order change) */
71 short int *include;
72 /** layer step used to localize the packet in the include vector */
73 int step_l;
74 /** resolution step used to localize the packet in the include vector */
75 int step_r;
76 /** component step used to localize the packet in the include vector */
77 int step_c;
78 /** precinct step used to localize the packet in the include vector */
79 int step_p;
80 /** component that identify the packet */
81 int compno;
82 /** resolution that identify the packet */
83 int resno;
84 /** precinct that identify the packet */
85 int precno;
86 /** layer that identify the packet */
87 int layno;
88 /** 0 if the first packet */
89 int first;
90 /** progression order change information */
91 opj_poc_t poc;
92 /** number of components in the image */
93 int numcomps;
94 /** Components*/
95 opj_pi_comp_t *comps;
96 int tx0, ty0, tx1, ty1;
97 int x, y, dx, dy;
98} opj_pi_iterator_t;
99
100/** @name Exported functions */
101/*@{*/
102/* ----------------------------------------------------------------------- */
103/**
104Create a packet iterator for Encoder
105@param image Raw image for which the packets will be listed
106@param cp Coding parameters
107@param tileno Number that identifies the tile for which to list the packets
108@param t2_mode If == 0 In Threshold calculation ,If == 1 Final pass
109@return Returns a packet iterator that points to the first packet of the tile
110@see pi_destroy
111*/
112opj_pi_iterator_t *pi_initialise_encode(opj_image_t *image, opj_cp_t *cp, int tileno,J2K_T2_MODE t2_mode);
113/**
114Modify the packet iterator for enabling tile part generation
115@param pi Handle to the packet iterator generated in pi_initialise_encode
116@param cp Coding parameters
117@param tileno Number that identifies the tile for which to list the packets
118@param tpnum Tile part number of the current tile
119@param tppos The position of the tile part flag in the progression order
120*/
121void pi_create_encode( opj_pi_iterator_t *pi, opj_cp_t *cp,int tileno, int pino,int tpnum, int tppos);
122/**
123Create a packet iterator for Decoder
124@param image Raw image for which the packets will be listed
125@param cp Coding parameters
126@param tileno Number that identifies the tile for which to list the packets
127@return Returns a packet iterator that points to the first packet of the tile
128@see pi_destroy
129*/
130opj_pi_iterator_t *pi_create_decode(opj_image_t * image, opj_cp_t * cp, int tileno);
131
132/**
133Destroy a packet iterator
134@param pi Previously created packet iterator
135@param cp Coding parameters
136@param tileno Number that identifies the tile for which the packets were listed
137@see pi_create
138*/
139void pi_destroy(opj_pi_iterator_t *pi, opj_cp_t *cp, int tileno);
140
141/**
142Modify the packet iterator to point to the next packet
143@param pi Packet iterator to modify
144@return Returns false if pi pointed to the last packet or else returns true
145*/
146bool pi_next(opj_pi_iterator_t * pi);
147/* ----------------------------------------------------------------------- */
148/*@}*/
149
150/*@}*/
151
152#endif /* __PI_H */