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1 /*
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.
6  *
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.
15  *
16  * Redistribution and use in source and binary forms, with or without
17  * modification, are permitted provided that the following conditions
18  * are met:
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.
24  *
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.
36  */
37 #ifndef __T1_H
38 #define __T1_H
39 /**
40 @file t1.h
41 @brief Implementation of the tier-1 coding (coding of code-block coefficients) (T1)
42 
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.
45 */
46 
47 /** @defgroup T1 T1 - Implementation of the tier-1 coding */
48 /*@{*/
49 
50 /* ----------------------------------------------------------------------- */
51 #define T1_NMSEDEC_BITS 7
52 
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)
63 
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)
69 
70 #define T1_SIG 0x1000
71 #define T1_REFINE 0x2000
72 #define T1_VISIT 0x4000
73 
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
79 
80 #define T1_CTXNO_ZC 0
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)
86 
87 #define T1_NMSEDEC_FRACBITS (T1_NMSEDEC_BITS-1)
88 
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)*/
91 
92 /* ----------------------------------------------------------------------- */
93 
94 typedef OPJ_INT16 opj_flag_t;
95 
96 /**
97 Tier-1 coding (coding of code-block coefficients)
98 */
99 typedef struct opj_t1 {
100 
101 	/** MQC component */
102 	opj_mqc_t *mqc;
103 	/** RAW component */
104 	opj_raw_t *raw;
105 
106 	OPJ_INT32  *data;
107 	opj_flag_t *flags;
108 	OPJ_UINT32 w;
109 	OPJ_UINT32 h;
110 	OPJ_UINT32 datasize;
111 	OPJ_UINT32 flagssize;
112 	OPJ_UINT32 flags_stride;
113 	OPJ_UINT32 data_stride;
114 	OPJ_BOOL   encoder;
115 } opj_t1_t;
116 
117 #define MACRO_t1_flags(x,y) t1->flags[((x)*(t1->flags_stride))+(y)]
118 
119 /** @name Exported functions */
120 /*@{*/
121 /* ----------------------------------------------------------------------- */
122 
123 /**
124 Encode the code-blocks of a tile
125 @param t1 T1 handle
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
130 */
131 OPJ_BOOL opj_t1_encode_cblks(   opj_t1_t *t1,
132                                 opj_tcd_tile_t *tile,
133                                 opj_tcp_t *tcp,
134                                 const OPJ_FLOAT64 * mct_norms,
135                                 OPJ_UINT32 mct_numcomps);
136 
137 /**
138 Decode the code-blocks of a tile
139 @param t1 T1 handle
140 @param tilec The tile to decode
141 @param tccp Tile coding parameters
142 */
143 OPJ_BOOL opj_t1_decode_cblks(   opj_t1_t* t1,
144                                 opj_tcd_tilecomp_t* tilec,
145                                 opj_tccp_t* tccp);
146 
147 
148 
149 /**
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
153 */
154 opj_t1_t* opj_t1_create(OPJ_BOOL isEncoder);
155 
156 /**
157  * Destroys a previously created T1 handle
158  *
159  * @param p_t1 Tier 1 handle to destroy
160 */
161 void opj_t1_destroy(opj_t1_t *p_t1);
162 /* ----------------------------------------------------------------------- */
163 /*@}*/
164 
165 /*@}*/
166 
167 #endif /* __T1_H */
168