174 lines
6.3 KiB
C
174 lines
6.3 KiB
C
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/*
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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, Herv<EFBFBD> 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 __T1_H
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#define __T1_H
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/**
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@file t1.h
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@brief Implementation of the tier-1 coding (coding of code-block coefficients) (T1)
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The functions in T1.C have for goal to realize the tier-1 coding operation. The functions
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in T1.C are used by some function in TCD.C.
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*/
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/** @defgroup T1 T1 - Implementation of the tier-1 coding */
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/*@{*/
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/* ----------------------------------------------------------------------- */
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#define T1_NMSEDEC_BITS 7
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#define T1_MAXCBLKW 256 /*< Maximum size of code-block (width) */
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#define T1_MAXCBLKH 256 /*< Maximum size of code-block (heigth) */
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#define T1_MAXCBLKD 256 /*< Maximum size of code-block (depth) */
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#define T1_MINCBLKW 4 /*< Minimum size of code-block (width) */
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#define T1_MINCBLKH 4 /*< Minimum size of code-block (heigth) */
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#define T1_MINCBLKD 4 /*< Minimum size of code-block (depth) */
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#define T1_MAXWHD 18
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#define T1_CBLKW 256
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#define T1_CBLKH 256
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#define T1_CBLKD 256
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#define T1_SIG_NE 0x0001 /*< Context orientation : North-East direction */
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#define T1_SIG_SE 0x0002 /*< Context orientation : South-East direction */
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#define T1_SIG_SW 0x0004 /*< Context orientation : South-West direction */
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#define T1_SIG_NW 0x0008 /*< Context orientation : North-West direction */
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#define T1_SIG_N 0x0010 /*< Context orientation : North direction */
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#define T1_SIG_E 0x0020 /*< Context orientation : East direction */
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#define T1_SIG_S 0x0040 /*< Context orientation : South direction */
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#define T1_SIG_W 0x0080 /*< Context orientation : West direction */
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#define T1_SIG_OTH (T1_SIG_N|T1_SIG_NE|T1_SIG_E|T1_SIG_SE|T1_SIG_S|T1_SIG_SW|T1_SIG_W|T1_SIG_NW)
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#define T1_SIG_PRIM (T1_SIG_N|T1_SIG_E|T1_SIG_S|T1_SIG_W)
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#define T1_SGN_N 0x0100
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#define T1_SGN_E 0x0200
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#define T1_SGN_S 0x0400
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#define T1_SGN_W 0x0800
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#define T1_SGN (T1_SGN_N|T1_SGN_E|T1_SGN_S|T1_SGN_W)
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#define T1_SIG 0x1000
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#define T1_REFINE 0x2000
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#define T1_VISIT 0x4000
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#define T1_NUMCTXS_AGG 1
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#define T1_NUMCTXS_ZC 9
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#define T1_NUMCTXS_MAG 3
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#define T1_NUMCTXS_SC 5
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#define T1_NUMCTXS_UNI 1
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#define T1_CTXNO_AGG 0
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#define T1_CTXNO_ZC (T1_CTXNO_AGG+T1_NUMCTXS_AGG)
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#define T1_CTXNO_MAG (T1_CTXNO_ZC+T1_NUMCTXS_ZC)
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#define T1_CTXNO_SC (T1_CTXNO_MAG+T1_NUMCTXS_MAG)
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#define T1_CTXNO_UNI (T1_CTXNO_SC+T1_NUMCTXS_SC)
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#define T1_NUMCTXS (T1_CTXNO_UNI+T1_NUMCTXS_UNI)
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#define T1_NMSEDEC_FRACBITS (T1_NMSEDEC_BITS-1)
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#define T1_TYPE_MQ 0 /*< Normal coding using entropy coder */
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#define T1_TYPE_RAW 1 /*< No encoding the information is store under raw format in codestream (mode switch RAW)*/
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/* ----------------------------------------------------------------------- */
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/**
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Tier-1 coding (coding of code-block coefficients)
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*/
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typedef struct opj_t1 {
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/** codec context */
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opj_common_ptr cinfo;
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/** MQC component */
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opj_mqc_t *mqc;
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/** RAW component */
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opj_raw_t *raw;
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/** LUTs for context-based coding */
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int lut_ctxno_zc[1024];
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int lut_ctxno_sc[256];
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int lut_ctxno_mag[4096];
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int lut_spb[256];
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/** LUTs for decoding normalised MSE */
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int lut_nmsedec_sig[1 << T1_NMSEDEC_BITS];
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int lut_nmsedec_sig0[1 << T1_NMSEDEC_BITS];
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int lut_nmsedec_ref[1 << T1_NMSEDEC_BITS];
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int lut_nmsedec_ref0[1 << T1_NMSEDEC_BITS];
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/** Codeblock data */
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int data[T1_CBLKD][T1_CBLKH][T1_CBLKW];//int ***data;
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/** Context information for each voxel in codeblock */
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int flags[T1_CBLKD + 2][T1_CBLKH + 2][T1_CBLKH + 2];//int ***flags;
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} opj_t1_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 new T1 handle
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and initialize the look-up tables of the Tier-1 coder/decoder
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@return Returns a new T1 handle if successful, returns NULL otherwise
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@see t1_init_luts
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*/
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opj_t1_t* t1_create(opj_common_ptr cinfo);
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/**
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Destroy a previously created T1 handle
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@param t1 T1 handle to destroy
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*/
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void t1_destroy(opj_t1_t *t1);
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/**
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Encode the code-blocks of a tile
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@param t1 T1 handle
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@param tile The tile to encode
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@param tcp Tile coding parameters
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*/
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void t1_encode_cblks(opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp);
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/**
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Decode the code-blocks of a tile
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@param t1 T1 handle
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@param tile The tile to decode
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@param tcp Tile coding parameters
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*/
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void t1_decode_cblks(opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp);
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/**
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Get weigths of MSE decoding
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@param nmsedec The normalized MSE reduction
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@param compno
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@param level
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@param orient
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@param bpno
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@param stepsize
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@param numcomps
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@param dwtid
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returns MSE associated to decoding pass
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*/
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double t1_getwmsedec(int nmsedec, int compno, int level[3], int orient, int bpno, double stepsize, int numcomps, int dwtid[3]);
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/* ----------------------------------------------------------------------- */
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/*@}*/
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/*@}*/
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#endif /* __T1_H */
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