2 * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
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3 * Copyright (c) 2002-2007, Professor Benoit Macq
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4 * Copyright (c) 2001-2003, David Janssens
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5 * Copyright (c) 2002-2003, Yannick Verschueren
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6 * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
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7 * Copyright (c) 2005, Herve Drolon, FreeImage Team
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8 * Copyright (c) 2008, Jerome Fimes, Communications & Systemes <jerome.fimes@c-s.fr>
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9 * All rights reserved.
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11 * Redistribution and use in source and binary forms, with or without
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12 * modification, are permitted provided that the following conditions
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14 * 1. Redistributions of source code must retain the above copyright
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15 * notice, this list of conditions and the following disclaimer.
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16 * 2. Redistributions in binary form must reproduce the above copyright
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17 * notice, this list of conditions and the following disclaimer in the
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18 * documentation and/or other materials provided with the distribution.
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20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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30 * POSSIBILITY OF SUCH DAMAGE.
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36 @brief Implementation of the tier-1 coding (coding of code-block coefficients) (T1)
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38 The functions in T1.C have for goal to realize the tier-1 coding operation. The functions
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39 in T1.C are used by some function in TCD.C.
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41 #include "openjpeg.h"
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42 /** @defgroup T1 T1 - Implementation of the tier-1 coding */
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45 /* ----------------------------------------------------------------------- */
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46 #define T1_NMSEDEC_BITS 7
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48 #define T1_SIG_NE 0x0001 /**< Context orientation : North-East direction */
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49 #define T1_SIG_SE 0x0002 /**< Context orientation : South-East direction */
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50 #define T1_SIG_SW 0x0004 /**< Context orientation : South-West direction */
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51 #define T1_SIG_NW 0x0008 /**< Context orientation : North-West direction */
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52 #define T1_SIG_N 0x0010 /**< Context orientation : North direction */
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53 #define T1_SIG_E 0x0020 /**< Context orientation : East direction */
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54 #define T1_SIG_S 0x0040 /**< Context orientation : South direction */
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55 #define T1_SIG_W 0x0080 /**< Context orientation : West direction */
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56 #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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57 #define T1_SIG_PRIM (T1_SIG_N|T1_SIG_E|T1_SIG_S|T1_SIG_W)
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59 #define T1_SGN_N 0x0100
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60 #define T1_SGN_E 0x0200
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61 #define T1_SGN_S 0x0400
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62 #define T1_SGN_W 0x0800
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63 #define T1_SGN (T1_SGN_N|T1_SGN_E|T1_SGN_S|T1_SGN_W)
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65 #define T1_SIG 0x1000
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66 #define T1_REFINE 0x2000
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67 #define T1_VISIT 0x4000
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69 #define T1_NUMCTXS_ZC 9
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70 #define T1_NUMCTXS_SC 5
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71 #define T1_NUMCTXS_MAG 3
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72 #define T1_NUMCTXS_AGG 1
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73 #define T1_NUMCTXS_UNI 1
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75 #define T1_CTXNO_ZC 0
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76 #define T1_CTXNO_SC (T1_CTXNO_ZC+T1_NUMCTXS_ZC)
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77 #define T1_CTXNO_MAG (T1_CTXNO_SC+T1_NUMCTXS_SC)
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78 #define T1_CTXNO_AGG (T1_CTXNO_MAG+T1_NUMCTXS_MAG)
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79 #define T1_CTXNO_UNI (T1_CTXNO_AGG+T1_NUMCTXS_AGG)
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80 #define T1_NUMCTXS (T1_CTXNO_UNI+T1_NUMCTXS_UNI)
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82 #define T1_NMSEDEC_FRACBITS (T1_NMSEDEC_BITS-1)
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84 #define T1_TYPE_MQ 0 /**< Normal coding using entropy coder */
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85 #define T1_TYPE_RAW 1 /**< No encoding the information is store under raw format in codestream (mode switch RAW)*/
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87 /* ----------------------------------------------------------------------- */
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88 struct opj_common_struct;
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89 struct opj_tcd_tile;
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91 struct opj_tcd_tilecomp;
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97 typedef short flag_t;
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100 Tier-1 coding (coding of code-block coefficients)
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102 typedef struct opj_t1 {
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103 /** MQC component */
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104 struct opj_mqc *mqc;
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105 /** RAW component */
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106 struct opj_raw *raw;
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112 OPJ_UINT32 datasize;
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113 OPJ_UINT32 flagssize;
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114 OPJ_UINT32 flags_stride;
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117 #define MACRO_t1_flags(x,y) t1->flags[((x)*(t1->flags_stride))+(y)]
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119 /** @name Exported functions */
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121 /* ----------------------------------------------------------------------- */
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124 * Creates a new Tier 1 handle
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125 * and initializes the look-up tables of the Tier-1 coder/decoder
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126 * @return a new T1 handle if successful, returns NULL otherwise
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128 opj_t1_t* t1_create();
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131 * Destroys a previously created T1 handle
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133 * @param p_t1 Tier 1 handle to destroy
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135 void t1_destroy(opj_t1_t *p_t1);
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138 Encode the code-blocks of a tile
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139 @param t1 T1 handle
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140 @param tile The tile to encode
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141 @param tcp Tile coding parameters
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143 bool t1_encode_cblks(opj_t1_t *t1, struct opj_tcd_tile *tile, struct opj_tcp *tcp,const OPJ_FLOAT64 * mct_norms);
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145 Decode the code-blocks of a tile
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146 @param t1 T1 handle
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147 @param tile The tile to decode
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148 @param tcp Tile coding parameters
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150 void t1_decode_cblks(opj_t1_t* t1, struct opj_tcd_tilecomp* tilec, struct opj_tccp* tccp);
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151 /* ----------------------------------------------------------------------- */
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156 #endif /* __T1_H */
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