openjpeg/libopenjpeg/tcd.h

/*
 * 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 __TCD_H
#define __TCD_H
/**
@file tcd.h
@brief Implementation of a tile coder/decoder (TCD)

The functions in TCD.C have for goal to encode or decode each tile independently from
each other. The functions in TCD.C are used by some function in J2K.C.
*/

/** @defgroup TCD TCD - Implementation of a tile coder/decoder */
/*@{*/

/**
FIXME: documentation
*/
typedef struct opj_tcd_seg {
  int numpasses;
  int len;
  unsigned char *data;
  int maxpasses;
  int numnewpasses;
  int newlen;
} opj_tcd_seg_t;

/**
FIXME: documentation
*/
typedef struct opj_tcd_pass {
  int rate;
  double distortiondec;
  int term, len;
} opj_tcd_pass_t;

/**
FIXME: documentation
*/
typedef struct opj_tcd_layer {
  int numpasses;		/* Number of passes in the layer */
  int len;			/* len of information */
  double disto;			/* add for index (Cfr. Marcela) */
  unsigned char *data;		/* data */
} opj_tcd_layer_t;

/**
FIXME: documentation
*/
typedef struct opj_tcd_cblk {
  int x0, y0, x1, y1;		/* dimension of the code-blocks : left upper corner (x0, y0) right low corner (x1,y1) */
  int numbps;
  int numlenbits;
  int len;			/* length */
  int numpasses;		/* number of pass already done for the code-blocks */
  int numnewpasses;		/* number of pass added to the code-blocks */
  int numsegs;			/* number of segments */
  opj_tcd_seg_t segs[100];		/* segments informations */
  unsigned char data[8192];	/* Data */
  int numpassesinlayers;	/* number of passes in the layer */
  opj_tcd_layer_t layers[100];	/* layer information */
  int totalpasses;		/* total number of passes */
  opj_tcd_pass_t passes[100];	/* information about the passes */
} opj_tcd_cblk_t;

/**
FIXME: documentation
*/
typedef struct opj_tcd_precinct {
  int x0, y0, x1, y1;		/* dimension of the precinct : left upper corner (x0, y0) right low corner (x1,y1) */
  int cw, ch;			/* number of precinct in width and heigth */
  opj_tcd_cblk_t *cblks;		/* code-blocks informations */
  opj_tgt_tree_t *incltree;		/* inclusion tree */
  opj_tgt_tree_t *imsbtree;		/* IMSB tree */
} opj_tcd_precinct_t;

/**
FIXME: documentation
*/
typedef struct opj_tcd_band {
  int x0, y0, x1, y1;		/* dimension of the subband : left upper corner (x0, y0) right low corner (x1,y1) */
  int bandno;
  opj_tcd_precinct_t *precincts;	/* precinct information */
  int numbps;
  float stepsize;
} opj_tcd_band_t;

/**
FIXME: documentation
*/
typedef struct opj_tcd_resolution {
  int x0, y0, x1, y1;		/* dimension of the resolution level : left upper corner (x0, y0) right low corner (x1,y1) */
  int pw, ph;
  int numbands;			/* number sub-band for the resolution level */
  opj_tcd_band_t bands[3];		/* subband information */
} opj_tcd_resolution_t;

/**
FIXME: documentation
*/
typedef struct opj_tcd_tilecomp {
  int x0, y0, x1, y1;		/* dimension of component : left upper corner (x0, y0) right low corner (x1,y1) */
  int numresolutions;		/* number of resolutions level */
  opj_tcd_resolution_t *resolutions;	/* resolutions information */
  int *data;			/* data of the component */
  int numpix;			/* add fixed_quality */
} opj_tcd_tilecomp_t;

/**
FIXME: documentation
*/
typedef struct opj_tcd_tile {
  int x0, y0, x1, y1;		/* dimension of the tile : left upper corner (x0, y0) right low corner (x1,y1) */
  int numcomps;			/* number of components in tile */
  opj_tcd_tilecomp_t *comps;	/* Components information */
  int numpix;			/* add fixed_quality */
  double distotile;		/* add fixed_quality */
  double distolayer[100];	/* add fixed_quality */
} opj_tcd_tile_t;

/**
FIXME: documentation
*/
typedef struct opj_tcd_image {
  int tw, th;			/* number of tiles in width and heigth */
  opj_tcd_tile_t *tiles;		/* Tiles information */
} opj_tcd_image_t;

/**
Tile coder/decoder
*/
typedef struct opj_tcd {
	/** Position of the tilepart flag in Progression order*/
	int tp_pos;
	/** Tile part number*/
	int tp_num;
	/** Current tile part number*/
	int cur_tp_num;
	/** Total number of tileparts of the current tile*/
	int cur_totnum_tp;
	/** Current Packet iterator number */
	int cur_pino;
	/** codec context */
	opj_common_ptr cinfo;

	/** info on each image tile */
	opj_tcd_image_t *tcd_image;
	/** image */
	opj_image_t *image;
	/** coding parameters */
	opj_cp_t *cp;
	/** pointer to the current encoded/decoded tile */
	opj_tcd_tile_t *tcd_tile;
	/** coding/decoding parameters common to all tiles */
	opj_tcp_t *tcp;
	/** current encoded/decoded tile */
	int tcd_tileno;
	/** Time taken to encode a tile*/
	double encoding_time;
} opj_tcd_t;

/** @name Exported functions */
/*@{*/
/* ----------------------------------------------------------------------- */

/**
Dump the content of a tcd structure
*/
void tcd_dump(FILE *fd, opj_tcd_t *tcd, opj_tcd_image_t *img);
/**
Create a new TCD handle
@param cinfo Codec context info
@return Returns a new TCD handle if successful returns NULL otherwise
*/
opj_tcd_t* tcd_create(opj_common_ptr cinfo);
/**
Destroy a previously created TCD handle
@param tcd TCD handle to destroy
*/
void tcd_destroy(opj_tcd_t *tcd);
/**
Initialize the tile coder (allocate the memory)
@param tcd TCD handle
@param image Raw image
@param cp Coding parameters
@param curtileno Number that identifies the tile that will be encoded
*/
void tcd_malloc_encode(opj_tcd_t *tcd, opj_image_t * image, opj_cp_t * cp, int curtileno);
/**
Free the memory allocated for encoding
@param tcd TCD handle
*/
void tcd_free_encode(opj_tcd_t *tcd);
/**
Initialize the tile coder (reuses the memory allocated by tcd_malloc_encode)
@param tcd TCD handle
@param image Raw image
@param cp Coding parameters
@param curtileno Number that identifies the tile that will be encoded
*/
void tcd_init_encode(opj_tcd_t *tcd, opj_image_t * image, opj_cp_t * cp, int curtileno);
/**
Initialize the tile decoder
@param tcd TCD handle
@param image Raw image
@param cp Coding parameters
*/
void tcd_malloc_decode(opj_tcd_t *tcd, opj_image_t * image, opj_cp_t * cp);
void tcd_malloc_decode_tile(opj_tcd_t *tcd, opj_image_t * image, opj_cp_t * cp, int tileno, opj_codestream_info_t *cstr_info);
void tcd_makelayer_fixed(opj_tcd_t *tcd, int layno, int final);
void tcd_rateallocate_fixed(opj_tcd_t *tcd);
void tcd_makelayer(opj_tcd_t *tcd, int layno, double thresh, int final);
bool tcd_rateallocate(opj_tcd_t *tcd, unsigned char *dest, int len, opj_codestream_info_t *cstr_info);
/**
Encode a tile from the raw image into a buffer
@param tcd TCD handle
@param tileno Number that identifies one of the tiles to be encoded
@param dest Destination buffer
@param len Length of destination buffer
@param cstr_info Codestream information structure 
@return 
*/
int tcd_encode_tile(opj_tcd_t *tcd, int tileno, unsigned char *dest, int len, opj_codestream_info_t *cstr_info);
/**
Decode a tile from a buffer into a raw image
@param tcd TCD handle
@param src Source buffer
@param len Length of source buffer
@param tileno Number that identifies one of the tiles to be decoded
*/
bool tcd_decode_tile(opj_tcd_t *tcd, unsigned char *src, int len, int tileno, opj_codestream_info_t *cstr_info);
/**
Free the memory allocated for decoding
@param tcd TCD handle
*/
void tcd_free_decode(opj_tcd_t *tcd);
void tcd_free_decode_tile(opj_tcd_t *tcd, int tileno);

/* ----------------------------------------------------------------------- */
/*@}*/

/*@}*/

#endif /* __TCD_H */