268 lines
8.5 KiB
C
268 lines
8.5 KiB
C
/*
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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) 2003-2005, Francois Devaux and Antonin Descampe
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* Copyright (c) 2005, HervŽ Drolon, FreeImage Team
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* Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
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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 __TCD_H
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#define __TCD_H
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/**
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@file tcd.h
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@brief Implementation of a tile coder/decoder (TCD)
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The functions in TCD.C have for goal to encode or decode each tile independently from
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each other. The functions in TCD.C are used by some function in J2K.C.
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*/
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/** @defgroup TCD TCD - Implementation of a tile coder/decoder */
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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_tcd_seg {
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int numpasses;
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int len;
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unsigned char *data;
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int maxpasses;
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int numnewpasses;
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int newlen;
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} opj_tcd_seg_t;
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/**
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FIXME: documentation
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*/
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typedef struct opj_tcd_pass {
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int rate;
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double distortiondec;
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int term, len;
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} opj_tcd_pass_t;
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/**
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FIXME: documentation
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*/
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typedef struct opj_tcd_layer {
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int numpasses; /* Number of passes in the layer */
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int len; /* len of information */
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double disto; /* add for index (Cfr. Marcela) */
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unsigned char *data; /* data */
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} opj_tcd_layer_t;
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/**
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FIXME: documentation
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*/
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typedef struct opj_tcd_cblk {
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int x0, y0, x1, y1; /* dimension of the code-blocks : left upper corner (x0, y0) right low corner (x1,y1) */
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int numbps;
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int numlenbits;
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int len; /* length */
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int numpasses; /* number of pass already done for the code-blocks */
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int numnewpasses; /* number of pass added to the code-blocks */
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int numsegs; /* number of segments */
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opj_tcd_seg_t segs[100]; /* segments informations */
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unsigned char data[8192]; /* Data */
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int numpassesinlayers; /* number of passes in the layer */
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opj_tcd_layer_t layers[100]; /* layer information */
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int totalpasses; /* total number of passes */
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opj_tcd_pass_t passes[100]; /* information about the passes */
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} opj_tcd_cblk_t;
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/**
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FIXME: documentation
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*/
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typedef struct opj_tcd_precinct {
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int x0, y0, x1, y1; /* dimension of the precinct : left upper corner (x0, y0) right low corner (x1,y1) */
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int cw, ch; /* number of precinct in width and heigth */
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opj_tcd_cblk_t *cblks; /* code-blocks informations */
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opj_tgt_tree_t *incltree; /* inclusion tree */
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opj_tgt_tree_t *imsbtree; /* IMSB tree */
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} opj_tcd_precinct_t;
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/**
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FIXME: documentation
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*/
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typedef struct opj_tcd_band {
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int x0, y0, x1, y1; /* dimension of the subband : left upper corner (x0, y0) right low corner (x1,y1) */
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int bandno;
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opj_tcd_precinct_t *precincts; /* precinct information */
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int numbps;
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float stepsize;
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} opj_tcd_band_t;
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/**
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FIXME: documentation
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*/
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typedef struct opj_tcd_resolution {
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int x0, y0, x1, y1; /* dimension of the resolution level : left upper corner (x0, y0) right low corner (x1,y1) */
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int pw, ph;
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int numbands; /* number sub-band for the resolution level */
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opj_tcd_band_t bands[3]; /* subband information */
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} opj_tcd_resolution_t;
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/**
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FIXME: documentation
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*/
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typedef struct opj_tcd_tilecomp {
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int x0, y0, x1, y1; /* dimension of component : left upper corner (x0, y0) right low corner (x1,y1) */
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int numresolutions; /* number of resolutions level */
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opj_tcd_resolution_t *resolutions; /* resolutions information */
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int *data; /* data of the component */
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int nbpix; /* add fixed_quality */
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} opj_tcd_tilecomp_t;
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/**
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FIXME: documentation
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*/
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typedef struct opj_tcd_tile {
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int x0, y0, x1, y1; /* dimension of the tile : left upper corner (x0, y0) right low corner (x1,y1) */
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int numcomps; /* number of components in tile */
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opj_tcd_tilecomp_t *comps; /* Components information */
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int nbpix; /* add fixed_quality */
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double distotile; /* add fixed_quality */
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double distolayer[100]; /* add fixed_quality */
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} opj_tcd_tile_t;
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/**
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FIXME: documentation
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*/
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typedef struct opj_tcd_image {
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int tw, th; /* number of tiles in width and heigth */
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opj_tcd_tile_t *tiles; /* Tiles information */
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} opj_tcd_image_t;
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/**
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Tile coder/decoder
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*/
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typedef struct opj_tcd {
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/** codec context */
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opj_common_ptr cinfo;
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/** info on each image tile */
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opj_tcd_image_t *tcd_image;
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/** image */
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opj_image_t *image;
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/** coding parameters */
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opj_cp_t *cp;
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/** pointer to the current encoded/decoded tile */
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opj_tcd_tile_t *tcd_tile;
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/** coding/decoding parameters common to all tiles */
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opj_tcp_t *tcp;
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/** current encoded/decoded tile */
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int tcd_tileno;
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/**@name working variables */
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/*@{*/
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opj_tcd_tile_t *tile;
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opj_tcd_tilecomp_t *tilec;
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opj_tcd_resolution_t *res;
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opj_tcd_band_t *band;
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opj_tcd_precinct_t *prc;
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opj_tcd_cblk_t *cblk;
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/*@}*/
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} opj_tcd_t;
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/** @name Exported functions */
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/*@{*/
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/* ----------------------------------------------------------------------- */
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/**
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Dump the content of a tcd structure
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*/
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void tcd_dump(FILE *fd, opj_tcd_t *tcd, opj_tcd_image_t * img, int curtileno);
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/**
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Create a new TCD handle
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@param cinfo Codec context info
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@return Returns a new TCD handle if successful returns NULL otherwise
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*/
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opj_tcd_t* tcd_create(opj_common_ptr cinfo);
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/**
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Destroy a previously created TCD handle
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@param tcd TCD handle to destroy
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*/
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void tcd_destroy(opj_tcd_t *tcd);
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/**
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Initialize the tile coder (allocate the memory)
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@param tcd TCD handle
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@param image Raw image
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@param cp Coding parameters
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@param curtileno Number that identifies the tile that will be encoded
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*/
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void tcd_malloc_encode(opj_tcd_t *tcd, opj_image_t * image, opj_cp_t * cp, int curtileno);
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/**
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Free the memory allocated for encoding
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@param tcd TCD handle
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*/
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void tcd_free_encode(opj_tcd_t *tcd);
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/**
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Initialize the tile coder (reuses the memory allocated by tcd_malloc_encode)
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@param tcd TCD handle
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@param image Raw image
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@param cp Coding parameters
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@param curtileno Number that identifies the tile that will be encoded
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*/
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void tcd_init_encode(opj_tcd_t *tcd, opj_image_t * image, opj_cp_t * cp, int curtileno);
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/**
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Initialize the tile decoder
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@param tcd TCD handle
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@param image Raw image
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@param cp Coding parameters
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*/
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void tcd_malloc_decode(opj_tcd_t *tcd, opj_image_t * image, opj_cp_t * cp);
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void tcd_makelayer_fixed(opj_tcd_t *tcd, int layno, int final);
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void tcd_rateallocate_fixed(opj_tcd_t *tcd);
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void tcd_makelayer(opj_tcd_t *tcd, int layno, double thresh, int final);
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bool tcd_rateallocate(opj_tcd_t *tcd, unsigned char *dest, int len, opj_image_info_t * image_info);
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/**
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Encode a tile from the raw image into a buffer
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@param tcd TCD handle
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@param tileno Number that identifies one of the tiles to be encoded
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@param dest Destination buffer
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@param len Length of destination buffer
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@param image_info Creation of index file
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@return
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*/
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int tcd_encode_tile(opj_tcd_t *tcd, int tileno, unsigned char *dest, int len, opj_image_info_t * image_info);
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/**
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Decode a tile from a buffer into a raw image
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@param tcd TCD handle
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@param src Source buffer
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@param len Length of source buffer
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@param tileno Number that identifies one of the tiles to be decoded
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*/
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bool tcd_decode_tile(opj_tcd_t *tcd, unsigned char *src, int len, int tileno);
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/**
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Free the memory allocated for decoding
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@param tcd TCD handle
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*/
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void tcd_free_decode(opj_tcd_t *tcd);
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/* ----------------------------------------------------------------------- */
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/*@}*/
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/*@}*/
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#endif /* __TCD_H */
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