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| /* |
| * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium |
| * Copyright (c) 2002-2007, Professor Benoit Macq |
| * Copyright (c) 2001-2003, David Janssens |
| * Copyright (c) 2002-2003, Yannick Verschueren |
| * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe |
| * Copyright (c) 2005, Herve Drolon, FreeImage Team |
| * 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 __PI_H |
| #define __PI_H |
| /** |
| @file pi.h |
| @brief Implementation of a packet iterator (PI) |
| |
| 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. |
| */ |
| |
| /** @defgroup PI PI - Implementation of a packet iterator */ |
| /*@{*/ |
| |
| /** |
| FIXME: documentation |
| */ |
| typedef struct opj_pi_resolution { |
| int pdx, pdy; |
| int pw, ph; |
| } opj_pi_resolution_t; |
| |
| /** |
| FIXME: documentation |
| */ |
| typedef struct opj_pi_comp { |
| int dx, dy; |
| /** number of resolution levels */ |
| int numresolutions; |
| opj_pi_resolution_t *resolutions; |
| } opj_pi_comp_t; |
| |
| /** |
| Packet iterator |
| */ |
| typedef struct opj_pi_iterator { |
| /** Enabling Tile part generation*/ |
| char tp_on; |
| /** 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; |
| /** number of components in the image */ |
| int numcomps; |
| /** Components*/ |
| opj_pi_comp_t *comps; |
| int tx0, ty0, tx1, ty1; |
| int x, y, dx, dy; |
| } opj_pi_iterator_t; |
| |
| /** @name Exported functions */ |
| /*@{*/ |
| /* ----------------------------------------------------------------------- */ |
| /** |
| Create a packet iterator for Encoder |
| @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 |
| @param t2_mode If == 0 In Threshold calculation ,If == 1 Final pass |
| @return Returns a packet iterator that points to the first packet of the tile |
| @see pi_destroy |
| */ |
| opj_pi_iterator_t *pi_initialise_encode(opj_image_t *image, opj_cp_t *cp, int tileno,J2K_T2_MODE t2_mode); |
| /** |
| Modify the packet iterator for enabling tile part generation |
| @param pi Handle to the packet iterator generated in pi_initialise_encode |
| @param cp Coding parameters |
| @param tileno Number that identifies the tile for which to list the packets |
| @param pino Iterator index for pi |
| @param tpnum Tile part number of the current tile |
| @param tppos The position of the tile part flag in the progression order |
| @param t2_mode If == 0 In Threshold calculation ,If == 1 Final pass |
| @param cur_totnum_tp The total number of tile parts in the current tile |
| @return Returns true if an error is detected |
| */ |
| bool pi_create_encode(opj_pi_iterator_t *pi, opj_cp_t *cp,int tileno, int pino,int tpnum, int tppos, J2K_T2_MODE t2_mode,int cur_totnum_tp); |
| /** |
| Create a packet iterator for Decoder |
| @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_decode(opj_image_t * image, opj_cp_t * cp, int tileno); |
| |
| /** |
| 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 /* __PI_H */ |
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