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/src/FreeImage/Source/LibOpenJPEG/t1.h

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C++ Header | 147 lines | 54 code | 18 blank | 75 comment | 0 complexity | bd0384041ebd7613cfd40910d8041dfe MD5 | raw file
  1/*
  2 * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
  3 * Copyright (c) 2002-2007, Professor Benoit Macq
  4 * Copyright (c) 2001-2003, David Janssens
  5 * Copyright (c) 2002-2003, Yannick Verschueren
  6 * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
  7 * Copyright (c) 2005, Herve Drolon, FreeImage Team
  8 * All rights reserved.
  9 *
 10 * Redistribution and use in source and binary forms, with or without
 11 * modification, are permitted provided that the following conditions
 12 * are met:
 13 * 1. Redistributions of source code must retain the above copyright
 14 *    notice, this list of conditions and the following disclaimer.
 15 * 2. Redistributions in binary form must reproduce the above copyright
 16 *    notice, this list of conditions and the following disclaimer in the
 17 *    documentation and/or other materials provided with the distribution.
 18 *
 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
 20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 29 * POSSIBILITY OF SUCH DAMAGE.
 30 */
 31#ifndef __T1_H
 32#define __T1_H
 33/**
 34@file t1.h
 35@brief Implementation of the tier-1 coding (coding of code-block coefficients) (T1)
 36
 37The functions in T1.C have for goal to realize the tier-1 coding operation. The functions
 38in T1.C are used by some function in TCD.C.
 39*/
 40
 41/** @defgroup T1 T1 - Implementation of the tier-1 coding */
 42/*@{*/
 43
 44/* ----------------------------------------------------------------------- */
 45#define T1_NMSEDEC_BITS 7
 46
 47#define T1_SIG_NE 0x0001	/**< Context orientation : North-East direction */
 48#define T1_SIG_SE 0x0002	/**< Context orientation : South-East direction */
 49#define T1_SIG_SW 0x0004	/**< Context orientation : South-West direction */
 50#define T1_SIG_NW 0x0008	/**< Context orientation : North-West direction */
 51#define T1_SIG_N 0x0010		/**< Context orientation : North direction */
 52#define T1_SIG_E 0x0020		/**< Context orientation : East direction */
 53#define T1_SIG_S 0x0040		/**< Context orientation : South direction */
 54#define T1_SIG_W 0x0080		/**< Context orientation : West direction */
 55#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)
 56#define T1_SIG_PRIM (T1_SIG_N|T1_SIG_E|T1_SIG_S|T1_SIG_W)
 57
 58#define T1_SGN_N 0x0100
 59#define T1_SGN_E 0x0200
 60#define T1_SGN_S 0x0400
 61#define T1_SGN_W 0x0800
 62#define T1_SGN (T1_SGN_N|T1_SGN_E|T1_SGN_S|T1_SGN_W)
 63
 64#define T1_SIG 0x1000
 65#define T1_REFINE 0x2000
 66#define T1_VISIT 0x4000
 67
 68#define T1_NUMCTXS_ZC 9
 69#define T1_NUMCTXS_SC 5
 70#define T1_NUMCTXS_MAG 3
 71#define T1_NUMCTXS_AGG 1
 72#define T1_NUMCTXS_UNI 1
 73
 74#define T1_CTXNO_ZC 0
 75#define T1_CTXNO_SC (T1_CTXNO_ZC+T1_NUMCTXS_ZC)
 76#define T1_CTXNO_MAG (T1_CTXNO_SC+T1_NUMCTXS_SC)
 77#define T1_CTXNO_AGG (T1_CTXNO_MAG+T1_NUMCTXS_MAG)
 78#define T1_CTXNO_UNI (T1_CTXNO_AGG+T1_NUMCTXS_AGG)
 79#define T1_NUMCTXS (T1_CTXNO_UNI+T1_NUMCTXS_UNI)
 80
 81#define T1_NMSEDEC_FRACBITS (T1_NMSEDEC_BITS-1)
 82
 83#define T1_TYPE_MQ 0	/**< Normal coding using entropy coder */
 84#define T1_TYPE_RAW 1	/**< No encoding the information is store under raw format in codestream (mode switch RAW)*/
 85
 86/* ----------------------------------------------------------------------- */
 87
 88typedef short flag_t;
 89
 90/**
 91Tier-1 coding (coding of code-block coefficients)
 92*/
 93typedef struct opj_t1 {
 94	/** codec context */
 95	opj_common_ptr cinfo;
 96
 97	/** MQC component */
 98	opj_mqc_t *mqc;
 99	/** RAW component */
100	opj_raw_t *raw;
101
102	int *data;
103	flag_t *flags;
104	int w;
105	int h;
106	int datasize;
107	int flagssize;
108	int flags_stride;
109} opj_t1_t;
110
111#define MACRO_t1_flags(x,y) t1->flags[((x)*(t1->flags_stride))+(y)]
112
113/** @name Exported functions */
114/*@{*/
115/* ----------------------------------------------------------------------- */
116/**
117Create a new T1 handle 
118and initialize the look-up tables of the Tier-1 coder/decoder
119@return Returns a new T1 handle if successful, returns NULL otherwise
120@see t1_init_luts
121*/
122opj_t1_t* t1_create(opj_common_ptr cinfo);
123/**
124Destroy a previously created T1 handle
125@param t1 T1 handle to destroy
126*/
127void t1_destroy(opj_t1_t *t1);
128/**
129Encode the code-blocks of a tile
130@param t1 T1 handle
131@param tile The tile to encode
132@param tcp Tile coding parameters
133*/
134void t1_encode_cblks(opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp);
135/**
136Decode the code-blocks of a tile
137@param t1 T1 handle
138@param tilec The tile to decode
139@param tccp Tile coding parameters
140*/
141void t1_decode_cblks(opj_t1_t* t1, opj_tcd_tilecomp_t* tilec, opj_tccp_t* tccp);
142/* ----------------------------------------------------------------------- */
143/*@}*/
144
145/*@}*/
146
147#endif /* __T1_H */