2 * Copyright (c) 2001-2003, David Janssens
\r
3 * Copyright (c) 2002-2003, Yannick Verschueren
\r
4 * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
\r
5 * Copyright (c) 2005, Herve Drolon, FreeImage Team
\r
6 * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
\r
7 * All rights reserved.
\r
9 * Redistribution and use in source and binary forms, with or without
\r
10 * modification, are permitted provided that the following conditions
\r
12 * 1. Redistributions of source code must retain the above copyright
\r
13 * notice, this list of conditions and the following disclaimer.
\r
14 * 2. Redistributions in binary form must reproduce the above copyright
\r
15 * notice, this list of conditions and the following disclaimer in the
\r
16 * documentation and/or other materials provided with the distribution.
\r
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
\r
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
\r
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
\r
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
\r
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
\r
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
\r
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
\r
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
\r
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
\r
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
\r
28 * POSSIBILITY OF SUCH DAMAGE.
\r
34 @brief Implementation of the tier-1 coding (coding of code-block coefficients) (T1)
\r
36 The functions in T1.C have for goal to realize the tier-1 coding operation. The functions
\r
37 in T1.C are used by some function in TCD.C.
\r
40 /** @defgroup T1 T1 - Implementation of the tier-1 coding */
\r
43 /* ----------------------------------------------------------------------- */
\r
44 #define T1_NMSEDEC_BITS 7
\r
46 #define T1_MAXCBLKW 256 /*< Maximum size of code-block (width) */
\r
47 #define T1_MAXCBLKH 256 /*< Maximum size of code-block (heigth) */
\r
48 #define T1_MAXCBLKD 256 /*< Maximum size of code-block (depth) */
\r
49 #define T1_MINCBLKW 4 /*< Minimum size of code-block (width) */
\r
50 #define T1_MINCBLKH 4 /*< Minimum size of code-block (heigth) */
\r
51 #define T1_MINCBLKD 4 /*< Minimum size of code-block (depth) */
\r
52 #define T1_MAXWHD 18
\r
53 #define T1_CBLKW 256
\r
54 #define T1_CBLKH 256
\r
55 #define T1_CBLKD 256
\r
57 #define T1_SIG_NE 0x0001 /*< Context orientation : North-East direction */
\r
58 #define T1_SIG_SE 0x0002 /*< Context orientation : South-East direction */
\r
59 #define T1_SIG_SW 0x0004 /*< Context orientation : South-West direction */
\r
60 #define T1_SIG_NW 0x0008 /*< Context orientation : North-West direction */
\r
61 #define T1_SIG_N 0x0010 /*< Context orientation : North direction */
\r
62 #define T1_SIG_E 0x0020 /*< Context orientation : East direction */
\r
63 #define T1_SIG_S 0x0040 /*< Context orientation : South direction */
\r
64 #define T1_SIG_W 0x0080 /*< Context orientation : West direction */
\r
65 #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)
\r
66 #define T1_SIG_PRIM (T1_SIG_N|T1_SIG_E|T1_SIG_S|T1_SIG_W)
\r
68 #define T1_SGN_N 0x0100
\r
69 #define T1_SGN_E 0x0200
\r
70 #define T1_SGN_S 0x0400
\r
71 #define T1_SGN_W 0x0800
\r
72 #define T1_SGN (T1_SGN_N|T1_SGN_E|T1_SGN_S|T1_SGN_W)
\r
74 #define T1_SIG 0x1000
\r
75 #define T1_REFINE 0x2000
\r
76 #define T1_VISIT 0x4000
\r
78 #define T1_NUMCTXS_AGG 1
\r
79 #define T1_NUMCTXS_ZC 9
\r
80 #define T1_NUMCTXS_MAG 3
\r
81 #define T1_NUMCTXS_SC 5
\r
82 #define T1_NUMCTXS_UNI 1
\r
84 #define T1_CTXNO_AGG 0
\r
85 #define T1_CTXNO_ZC (T1_CTXNO_AGG+T1_NUMCTXS_AGG)
\r
86 #define T1_CTXNO_MAG (T1_CTXNO_ZC+T1_NUMCTXS_ZC)
\r
87 #define T1_CTXNO_SC (T1_CTXNO_MAG+T1_NUMCTXS_MAG)
\r
88 #define T1_CTXNO_UNI (T1_CTXNO_SC+T1_NUMCTXS_SC)
\r
89 #define T1_NUMCTXS (T1_CTXNO_UNI+T1_NUMCTXS_UNI)
\r
91 #define T1_NMSEDEC_FRACBITS (T1_NMSEDEC_BITS-1)
\r
93 #define T1_TYPE_MQ 0 /*< Normal coding using entropy coder */
\r
94 #define T1_TYPE_RAW 1 /*< No encoding the information is store under raw format in codestream (mode switch RAW)*/
\r
96 /* ----------------------------------------------------------------------- */
\r
99 Tier-1 coding (coding of code-block coefficients)
\r
101 typedef struct opj_t1 {
\r
102 /** codec context */
\r
103 opj_common_ptr cinfo;
\r
105 /** MQC component */
\r
107 /** RAW component */
\r
109 /** LUTs for context-based coding */
\r
110 int lut_ctxno_zc[1024];
\r
111 int lut_ctxno_sc[256];
\r
112 int lut_ctxno_mag[4096];
\r
114 /** LUTs for decoding normalised MSE */
\r
115 int lut_nmsedec_sig[1 << T1_NMSEDEC_BITS];
\r
116 int lut_nmsedec_sig0[1 << T1_NMSEDEC_BITS];
\r
117 int lut_nmsedec_ref[1 << T1_NMSEDEC_BITS];
\r
118 int lut_nmsedec_ref0[1 << T1_NMSEDEC_BITS];
\r
119 /** Codeblock data */
\r
120 int data[T1_CBLKD][T1_CBLKH][T1_CBLKW];//int ***data;
\r
121 /** Context information for each voxel in codeblock */
\r
122 int flags[T1_CBLKD + 2][T1_CBLKH + 2][T1_CBLKH + 2];//int ***flags;
\r
125 /** @name Exported functions */
\r
127 /* ----------------------------------------------------------------------- */
\r
129 Create a new T1 handle
\r
130 and initialize the look-up tables of the Tier-1 coder/decoder
\r
131 @return Returns a new T1 handle if successful, returns NULL otherwise
\r
134 opj_t1_t* t1_create(opj_common_ptr cinfo);
\r
136 Destroy a previously created T1 handle
\r
137 @param t1 T1 handle to destroy
\r
139 void t1_destroy(opj_t1_t *t1);
\r
141 Encode the code-blocks of a tile
\r
142 @param t1 T1 handle
\r
143 @param tile The tile to encode
\r
144 @param tcp Tile coding parameters
\r
146 void t1_encode_cblks(opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp);
\r
148 Decode the code-blocks of a tile
\r
149 @param t1 T1 handle
\r
150 @param tile The tile to decode
\r
151 @param tcp Tile coding parameters
\r
153 void t1_decode_cblks(opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp);
\r
155 Get weigths of MSE decoding
\r
156 @param nmsedec The normalized MSE reduction
\r
164 returns MSE associated to decoding pass
\r
166 double t1_getwmsedec(int nmsedec, int compno, int level[3], int orient, int bpno, double stepsize, int numcomps, int dwtid[3]);
\r
168 /* ----------------------------------------------------------------------- */
\r
173 #endif /* __T1_H */
\r