f16216e270
Functions should only have formal documentation in one place, and preferably in the declaration (i.e. repeated documentaiton should not be at both the declaration and the definition, because it causes too much maintenance to keep them syncronized). In cases where the definition is also the declaration (as is often the case for static functions in the .c files) the documentation was preserved at the first use of the function signature. Functions that are formally documented should contain documentation for each function argument. The clang 3.1 compiler issues documentation warnings when the documentation block with @params preceeding a declaration does not match the argument list. This patch set follows a convention used elsewere in openjpeg to add a placeholder FIXME DOC description where one was previously missing. Thanks to Hans Johnson.
217 lines
7.7 KiB
C
217 lines
7.7 KiB
C
/*
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* Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
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* Copyright (c) 2002-2007, Professor Benoit Macq
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* Copyright (c) 2001-2003, David Janssens
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* Copyright (c) 2002-2003, Yannick Verschueren
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* Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
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* Copyright (c) 2005, Herve Drolon, FreeImage Team
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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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/**
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@file pi.h
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@brief Implementation of a packet iterator (PI)
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The functions in PI.C have for goal to realize a packet iterator that permits to get the next
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packet following the progression order and change of it. The functions in PI.C are used
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by some function in T2.C.
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*/
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/** @defgroup PI PI - Implementation of a packet iterator */
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/*@{*/
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/**
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FIXME: documentation
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*/
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typedef struct opj_pi_resolution {
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int pdx, pdy;
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int pw, ph;
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} opj_pi_resolution_t;
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/**
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FIXME: documentation
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*/
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typedef struct opj_pi_comp {
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int dx, dy;
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/** number of resolution levels */
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int numresolutions;
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opj_pi_resolution_t *resolutions;
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} opj_pi_comp_t;
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/**
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Packet iterator
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*/
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typedef struct opj_pi_iterator {
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/** Enabling Tile part generation*/
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char tp_on;
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/** precise if the packet has been already used (usefull for progression order change) */
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short int *include;
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/** layer step used to localize the packet in the include vector */
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int step_l;
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/** resolution step used to localize the packet in the include vector */
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int step_r;
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/** component step used to localize the packet in the include vector */
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int step_c;
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/** precinct step used to localize the packet in the include vector */
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int step_p;
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/** component that identify the packet */
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int compno;
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/** resolution that identify the packet */
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int resno;
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/** precinct that identify the packet */
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int precno;
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/** layer that identify the packet */
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int layno;
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/** 0 if the first packet */
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int first;
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/** progression order change information */
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opj_poc_t poc;
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/** number of components in the image */
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int numcomps;
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/** Components*/
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opj_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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} opj_pi_iterator_t;
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/** @name Exported functions */
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/*@{*/
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/* ----------------------------------------------------------------------- */
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/**
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Create a packet iterator for Encoder
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@param image Raw image for which the packets will be listed
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@param cp Coding parameters
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@param tileno Number that identifies the tile for which to list the packets
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@param t2_mode If == 0 In Threshold calculation ,If == 1 Final pass
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@return Returns a packet iterator that points to the first packet of the tile
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@see pi_destroy
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*/
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opj_pi_iterator_t *pi_initialise_encode(opj_image_t *image, opj_cp_t *cp, int tileno,J2K_T2_MODE t2_mode);
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/**
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* Creates a packet iterator for encoding.
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*
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* @param image the image being encoded.
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* @param cp the coding parameters.
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* @param tileno index of the tile being encoded.
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* @param t2_mode the type of pass for generating the packet iterator
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*
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* @return a list of packet iterator that points to the first packet of the tile (not true).
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*/
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opj_pi_iterator_t *pi_initialise_encode_v2( const struct opj_image *image,
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struct opj_cp_v2 *cp,
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OPJ_UINT32 tileno,
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J2K_T2_MODE t2_mode);
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/**
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* Updates the encoding parameters of the codec.
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*
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* @param p_image the image being encoded.
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* @param p_cp the coding parameters.
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* @param p_tile_no index of the tile being encoded.
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*/
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void pi_update_encoding_parameters( const struct opj_image *p_image,
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struct opj_cp_v2 *p_cp,
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OPJ_UINT32 p_tile_no );
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/**
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Modify the packet iterator for enabling tile part generation
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@param pi Handle to the packet iterator generated in pi_initialise_encode
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@param cp Coding parameters
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@param tileno Number that identifies the tile for which to list the packets
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@param pino Iterator index for pi
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@param tpnum Tile part number of the current tile
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@param tppos The position of the tile part flag in the progression order
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@param t2_mode If == 0 In Threshold calculation ,If == 1 Final pass
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@param cur_totnum_tp The total number of tile parts in the current tile
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@return Returns true if an error is detected
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*/
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opj_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);
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/**
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Modify the packet iterator for enabling tile part generation
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@param pi Handle to the packet iterator generated in pi_initialise_encode
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@param cp Coding parameters
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@param tileno Number that identifies the tile for which to list the packets
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@param pino FIXME DOC
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@param tpnum Tile part number of the current tile
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@param tppos The position of the tile part flag in the progression order
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@param t2_mode FIXME DOC
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*/
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void pi_create_encode_v2( opj_pi_iterator_t *pi, struct opj_cp_v2 *cp,OPJ_UINT32 tileno, OPJ_UINT32 pino,OPJ_UINT32 tpnum, OPJ_INT32 tppos, J2K_T2_MODE t2_mode);
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/**
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Create a packet iterator for Decoder
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@param image Raw image for which the packets will be listed
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@param cp Coding parameters
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@param tileno Number that identifies the tile for which to list the packets
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@return Returns a packet iterator that points to the first packet of the tile
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@see pi_destroy
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*/
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opj_pi_iterator_t *pi_create_decode(opj_image_t * image, opj_cp_t * cp, int tileno);
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/**
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Create a packet iterator for Decoder
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@param image Raw image for which the packets will be listed
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@param cp Coding parameters
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@param tileno Number that identifies the tile for which to list the packets
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@return Returns a packet iterator that points to the first packet of the tile
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@see pi_destroy
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*/
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opj_pi_iterator_t *pi_create_decode_v2(struct opj_image * image, struct opj_cp_v2 * cp, OPJ_UINT32 tileno);
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/**
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Destroy a packet iterator
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@param pi Previously created packet iterator
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@param cp Coding parameters
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@param tileno Number that identifies the tile for which the packets were listed
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@see pi_create
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*/
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void pi_destroy(opj_pi_iterator_t *pi, opj_cp_t *cp, int tileno);
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/**
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* Destroys a packet iterator array.
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*
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* @param p_pi the packet iterator array to destroy.
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* @param p_nb_elements the number of elements in the array.
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*/
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void pi_destroy_v2(
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opj_pi_iterator_t *p_pi,
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OPJ_UINT32 p_nb_elements);
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/**
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Modify the packet iterator to point to the next packet
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@param pi Packet iterator to modify
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@return Returns false if pi pointed to the last packet or else returns true
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*/
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opj_bool pi_next(opj_pi_iterator_t * pi);
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/* ----------------------------------------------------------------------- */
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/*@}*/
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/*@}*/
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#endif /* __PI_H */
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