| /* |
| * The copyright in this software is being made available under the 2-clauses |
| * BSD License, included below. This software may be subject to other third |
| * party and contributor rights, including patent rights, and no such rights |
| * are granted under this license. |
| * |
| * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium |
| * Copyright (c) 2002-2014, Professor Benoit Macq |
| * Copyright (c) 2001-2003, David Janssens |
| * Copyright (c) 2002-2003, Yannick Verschueren |
| * Copyright (c) 2003-2007, Francois-Olivier Devaux |
| * Copyright (c) 2003-2014, 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 OPJ_PI_H |
| #define OPJ_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 DOC |
| */ |
| typedef struct opj_pi_resolution { |
| OPJ_UINT32 pdx, pdy; |
| OPJ_UINT32 pw, ph; |
| } opj_pi_resolution_t; |
| |
| /** |
| FIXME DOC |
| */ |
| typedef struct opj_pi_comp { |
| OPJ_UINT32 dx, dy; |
| /** number of resolution levels */ |
| OPJ_UINT32 numresolutions; |
| opj_pi_resolution_t *resolutions; |
| } opj_pi_comp_t; |
| |
| /** |
| Packet iterator |
| */ |
| typedef struct opj_pi_iterator { |
| /** Enabling Tile part generation*/ |
| OPJ_BYTE tp_on; |
| /** precise if the packet has been already used (useful for progression order change) */ |
| OPJ_INT16 *include; |
| /** Number of elements in include array */ |
| OPJ_UINT32 include_size; |
| /** layer step used to localize the packet in the include vector */ |
| OPJ_UINT32 step_l; |
| /** resolution step used to localize the packet in the include vector */ |
| OPJ_UINT32 step_r; |
| /** component step used to localize the packet in the include vector */ |
| OPJ_UINT32 step_c; |
| /** precinct step used to localize the packet in the include vector */ |
| OPJ_UINT32 step_p; |
| /** component that identify the packet */ |
| OPJ_UINT32 compno; |
| /** resolution that identify the packet */ |
| OPJ_UINT32 resno; |
| /** precinct that identify the packet */ |
| OPJ_UINT32 precno; |
| /** layer that identify the packet */ |
| OPJ_UINT32 layno; |
| /** 0 if the first packet */ |
| OPJ_BOOL first; |
| /** progression order change information */ |
| opj_poc_t poc; |
| /** number of components in the image */ |
| OPJ_UINT32 numcomps; |
| /** Components*/ |
| opj_pi_comp_t *comps; |
| /** FIXME DOC*/ |
| OPJ_INT32 tx0, ty0, tx1, ty1; |
| /** FIXME DOC*/ |
| OPJ_INT32 x, y; |
| /** FIXME DOC*/ |
| OPJ_UINT32 dx, dy; |
| } opj_pi_iterator_t; |
| |
| /** @name Exported functions */ |
| /*@{*/ |
| /* ----------------------------------------------------------------------- */ |
| /** |
| * Creates a packet iterator for encoding. |
| * |
| * @param image the image being encoded. |
| * @param cp the coding parameters. |
| * @param tileno index of the tile being encoded. |
| * @param t2_mode the type of pass for generating the packet iterator |
| * |
| * @return a list of packet iterator that points to the first packet of the tile (not true). |
| */ |
| opj_pi_iterator_t *opj_pi_initialise_encode(const opj_image_t *image, |
| opj_cp_t *cp, |
| OPJ_UINT32 tileno, |
| J2K_T2_MODE t2_mode); |
| |
| /** |
| * Updates the encoding parameters of the codec. |
| * |
| * @param p_image the image being encoded. |
| * @param p_cp the coding parameters. |
| * @param p_tile_no index of the tile being encoded. |
| */ |
| void opj_pi_update_encoding_parameters(const opj_image_t *p_image, |
| opj_cp_t *p_cp, |
| OPJ_UINT32 p_tile_no); |
| |
| /** |
| 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 FIXME DOC |
| @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 FIXME DOC |
| */ |
| void opj_pi_create_encode(opj_pi_iterator_t *pi, |
| opj_cp_t *cp, |
| OPJ_UINT32 tileno, |
| OPJ_UINT32 pino, |
| OPJ_UINT32 tpnum, |
| OPJ_INT32 tppos, |
| J2K_T2_MODE t2_mode); |
| |
| /** |
| 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 opj_pi_destroy |
| */ |
| opj_pi_iterator_t *opj_pi_create_decode(opj_image_t * image, |
| opj_cp_t * cp, |
| OPJ_UINT32 tileno); |
| /** |
| * Destroys a packet iterator array. |
| * |
| * @param p_pi the packet iterator array to destroy. |
| * @param p_nb_elements the number of elements in the array. |
| */ |
| void opj_pi_destroy(opj_pi_iterator_t *p_pi, |
| OPJ_UINT32 p_nb_elements); |
| |
| /** |
| 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 |
| */ |
| OPJ_BOOL opj_pi_next(opj_pi_iterator_t * pi); |
| /* ----------------------------------------------------------------------- */ |
| /*@}*/ |
| |
| /*@}*/ |
| |
| #endif /* OPJ_PI_H */ |