/*
- * Copyright (c) 2001-2002, David Janssens
+ * Copyright (c) 2001-2003, David Janssens
+ * Copyright (c) 2002-2003, Yannick Verschueren
+ * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
+ * Copyright (c) 2005, Hervé Drolon, FreeImage Team
+ * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
#ifndef __PI_H
#define __PI_H
+/**
+@file pi.h
+@brief Implementation of a packet iterator (PI)
-#include "j2k.h"
-#include "tcd.h"
+The functions in PI.C have for goal to realize a packet iterator that permits to get the next
+packet following the progression order and change of it. The functions in PI.C are used
+by some function in T2.C.
+*/
-typedef struct {
+/** @defgroup PI PI - Implementation of a packet iterator */
+/*@{*/
+
+/**
+FIXME: documentation
+*/
+typedef struct opj_pi_resolution {
int pdx, pdy;
int pw, ph;
-} pi_resolution_t;
+} opj_pi_resolution_t;
-typedef struct {
+/**
+FIXME: documentation
+*/
+typedef struct opj_pi_comp {
int dx, dy;
+ /** number of resolution levels */
int numresolutions;
- pi_resolution_t *resolutions;
-} pi_comp_t;
+ opj_pi_resolution_t *resolutions;
+} opj_pi_comp_t;
-typedef struct {
- short int *include; /* precise if the packet has been already used (usefull for progression order change) */
- int step_l, step_r, step_c, step_p; /* different steps (layer, resolution, component, precinct) to localize the packet in the include vector */
- int compno, resno, precno, layno; /* component, resolution, precinct and layer that indentify the packet */
- int first; /* 0 if the first packet */
- j2k_poc_t poc;
+/**
+Packet iterator
+*/
+typedef struct opj_pi_iterator {
+ /** precise if the packet has been already used (usefull for progression order change) */
+ short int *include;
+ /** layer step used to localize the packet in the include vector */
+ int step_l;
+ /** resolution step used to localize the packet in the include vector */
+ int step_r;
+ /** component step used to localize the packet in the include vector */
+ int step_c;
+ /** precinct step used to localize the packet in the include vector */
+ int step_p;
+ /** component that identify the packet */
+ int compno;
+ /** resolution that identify the packet */
+ int resno;
+ /** precinct that identify the packet */
+ int precno;
+ /** layer that identify the packet */
+ int layno;
+ /** 0 if the first packet */
+ int first;
+ /** progression order change information */
+ opj_poc_t poc;
+ /** */
int numcomps;
- pi_comp_t *comps;
+ /** */
+ opj_pi_comp_t *comps;
int tx0, ty0, tx1, ty1;
int x, y, dx, dy;
-} pi_iterator_t; /* packet iterator */
+} opj_pi_iterator_t;
-/*
- * Create a packet iterator
- * img: raw image for which the packets will be listed
- * cp: coding paremeters
- * tileno: number that identifies the tile for which to list the packets
- * return value: returns a packet iterator that points to the first packet of the tile
- */
-pi_iterator_t *pi_create(j2k_image_t * img, j2k_cp_t * cp, int tileno);
+/** @name Exported functions */
+/*@{*/
+/* ----------------------------------------------------------------------- */
+/**
+Create a packet iterator
+@param image Raw image for which the packets will be listed
+@param cp Coding parameters
+@param tileno Number that identifies the tile for which to list the packets
+@return Returns a packet iterator that points to the first packet of the tile
+@see pi_destroy
+*/
+opj_pi_iterator_t *pi_create(opj_image_t * image, opj_cp_t * cp, int tileno);
-/*
- * Modify the packet iterator to point to the next packet
- * pi: packet iterator to modify
- * return value: returns 0 if pi pointed to the last packet or else returns 1
- */
-int pi_next(pi_iterator_t * pi);
+/**
+Destroy a packet iterator
+@param pi Previously created packet iterator
+@param cp Coding parameters
+@param tileno Number that identifies the tile for which the packets were listed
+@see pi_create
+*/
+void pi_destroy(opj_pi_iterator_t *pi, opj_cp_t *cp, int tileno);
+
+/**
+Modify the packet iterator to point to the next packet
+@param pi Packet iterator to modify
+@return Returns false if pi pointed to the last packet or else returns true
+*/
+bool pi_next(opj_pi_iterator_t * pi);
+/* ----------------------------------------------------------------------- */
+/*@}*/
+
+/*@}*/
-#endif
+#endif /* __PI_H */