2 * The copyright in this software is being made available under the 2-clauses
3 * BSD License, included below. This software may be subject to other third
4 * party and contributor rights, including patent rights, and no such rights
5 * are granted under this license.
7 * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
8 * Copyright (c) 2002-2014, Professor Benoit Macq
9 * Copyright (c) 2001-2003, David Janssens
10 * Copyright (c) 2002-2003, Yannick Verschueren
11 * Copyright (c) 2003-2007, Francois-Olivier Devaux
12 * Copyright (c) 2003-2014, Antonin Descampe
13 * Copyright (c) 2005, Herve Drolon, FreeImage Team
14 * All rights reserved.
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
19 * 1. Redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution.
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
26 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
29 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
41 @brief Implementation of the tier-1 coding (coding of code-block coefficients) (T1)
43 The functions in T1.C have for goal to realize the tier-1 coding operation. The functions
44 in T1.C are used by some function in TCD.C.
47 /** @defgroup T1 T1 - Implementation of the tier-1 coding */
50 /* ----------------------------------------------------------------------- */
51 #define T1_NMSEDEC_BITS 7
53 #define T1_SIG_NE 0x0001 /**< Context orientation : North-East direction */
54 #define T1_SIG_SE 0x0002 /**< Context orientation : South-East direction */
55 #define T1_SIG_SW 0x0004 /**< Context orientation : South-West direction */
56 #define T1_SIG_NW 0x0008 /**< Context orientation : North-West direction */
57 #define T1_SIG_N 0x0010 /**< Context orientation : North direction */
58 #define T1_SIG_E 0x0020 /**< Context orientation : East direction */
59 #define T1_SIG_S 0x0040 /**< Context orientation : South direction */
60 #define T1_SIG_W 0x0080 /**< Context orientation : West direction */
61 #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)
62 #define T1_SIG_PRIM (T1_SIG_N|T1_SIG_E|T1_SIG_S|T1_SIG_W)
64 #define T1_SGN_N 0x0100
65 #define T1_SGN_E 0x0200
66 #define T1_SGN_S 0x0400
67 #define T1_SGN_W 0x0800
68 #define T1_SGN (T1_SGN_N|T1_SGN_E|T1_SGN_S|T1_SGN_W)
71 #define T1_REFINE 0x2000
72 #define T1_VISIT 0x4000
74 #define T1_NUMCTXS_ZC 9
75 #define T1_NUMCTXS_SC 5
76 #define T1_NUMCTXS_MAG 3
77 #define T1_NUMCTXS_AGG 1
78 #define T1_NUMCTXS_UNI 1
81 #define T1_CTXNO_SC (T1_CTXNO_ZC+T1_NUMCTXS_ZC)
82 #define T1_CTXNO_MAG (T1_CTXNO_SC+T1_NUMCTXS_SC)
83 #define T1_CTXNO_AGG (T1_CTXNO_MAG+T1_NUMCTXS_MAG)
84 #define T1_CTXNO_UNI (T1_CTXNO_AGG+T1_NUMCTXS_AGG)
85 #define T1_NUMCTXS (T1_CTXNO_UNI+T1_NUMCTXS_UNI)
87 #define T1_NMSEDEC_FRACBITS (T1_NMSEDEC_BITS-1)
89 #define T1_TYPE_MQ 0 /**< Normal coding using entropy coder */
90 #define T1_TYPE_RAW 1 /**< No encoding the information is store under raw format in codestream (mode switch RAW)*/
92 /* ----------------------------------------------------------------------- */
94 typedef OPJ_INT16 opj_flag_t;
97 Tier-1 coding (coding of code-block coefficients)
99 typedef struct opj_t1 {
111 OPJ_UINT32 flagssize;
112 OPJ_UINT32 flags_stride;
113 OPJ_UINT32 data_stride;
117 #define MACRO_t1_flags(x,y) t1->flags[((x)*(t1->flags_stride))+(y)]
119 /** @name Exported functions */
121 /* ----------------------------------------------------------------------- */
124 Encode the code-blocks of a tile
126 @param tile The tile to encode
127 @param tcp Tile coding parameters
128 @param mct_norms FIXME DOC
129 @param mct_numcomps Number of components used for MCT
131 OPJ_BOOL opj_t1_encode_cblks( opj_t1_t *t1,
132 opj_tcd_tile_t *tile,
134 const OPJ_FLOAT64 * mct_norms,
135 OPJ_UINT32 mct_numcomps);
138 Decode the code-blocks of a tile
140 @param tilec The tile to decode
141 @param tccp Tile coding parameters
143 OPJ_BOOL opj_t1_decode_cblks( opj_t1_t* t1,
144 opj_tcd_tilecomp_t* tilec,
150 * Creates a new Tier 1 handle
151 * and initializes the look-up tables of the Tier-1 coder/decoder
152 * @return a new T1 handle if successful, returns NULL otherwise
154 opj_t1_t* opj_t1_create(OPJ_BOOL isEncoder);
157 * Destroys a previously created T1 handle
159 * @param p_t1 Tier 1 handle to destroy
161 void opj_t1_destroy(opj_t1_t *p_t1);
162 /* ----------------------------------------------------------------------- */