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4680 | right-hear | 1 | /* |
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 | * All rights reserved. |
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9 | * |
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10 | * Redistribution and use in source and binary forms, with or without |
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11 | * modification, are permitted provided that the following conditions |
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12 | * are met: |
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13 | * 1. Redistributions of source code must retain the above copyright |
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14 | * notice, this list of conditions and the following disclaimer. |
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15 | * 2. Redistributions in binary form must reproduce the above copyright |
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16 | * notice, this list of conditions and the following disclaimer in the |
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17 | * documentation and/or other materials provided with the distribution. |
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18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' |
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20 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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23 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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29 | * POSSIBILITY OF SUCH DAMAGE. |
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30 | */ |
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31 | #ifndef __T1_H |
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32 | #define __T1_H |
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33 | /** |
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34 | @file t1.h |
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35 | @brief Implementation of the tier-1 coding (coding of code-block coefficients) (T1) |
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36 | |||
37 | The functions in T1.C have for goal to realize the tier-1 coding operation. The functions |
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38 | in T1.C are used by some function in TCD.C. |
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39 | */ |
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40 | |||
41 | /** @defgroup T1 T1 - Implementation of the tier-1 coding */ |
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42 | /*@{*/ |
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43 | |||
44 | /* ----------------------------------------------------------------------- */ |
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45 | #define T1_NMSEDEC_BITS 7 |
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46 | |||
47 | #define T1_SIG_NE 0x0001 /**< Context orientation : North-East direction */ |
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48 | #define T1_SIG_SE 0x0002 /**< Context orientation : South-East direction */ |
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49 | #define T1_SIG_SW 0x0004 /**< Context orientation : South-West direction */ |
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50 | #define T1_SIG_NW 0x0008 /**< Context orientation : North-West direction */ |
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51 | #define T1_SIG_N 0x0010 /**< Context orientation : North direction */ |
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52 | #define T1_SIG_E 0x0020 /**< Context orientation : East direction */ |
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53 | #define T1_SIG_S 0x0040 /**< Context orientation : South direction */ |
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54 | #define T1_SIG_W 0x0080 /**< Context orientation : West direction */ |
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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) |
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56 | #define T1_SIG_PRIM (T1_SIG_N|T1_SIG_E|T1_SIG_S|T1_SIG_W) |
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57 | |||
58 | #define T1_SGN_N 0x0100 |
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59 | #define T1_SGN_E 0x0200 |
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60 | #define T1_SGN_S 0x0400 |
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61 | #define T1_SGN_W 0x0800 |
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62 | #define T1_SGN (T1_SGN_N|T1_SGN_E|T1_SGN_S|T1_SGN_W) |
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63 | |||
64 | #define T1_SIG 0x1000 |
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65 | #define T1_REFINE 0x2000 |
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66 | #define T1_VISIT 0x4000 |
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67 | |||
68 | #define T1_NUMCTXS_ZC 9 |
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69 | #define T1_NUMCTXS_SC 5 |
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70 | #define T1_NUMCTXS_MAG 3 |
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71 | #define T1_NUMCTXS_AGG 1 |
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72 | #define T1_NUMCTXS_UNI 1 |
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73 | |||
74 | #define T1_CTXNO_ZC 0 |
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75 | #define T1_CTXNO_SC (T1_CTXNO_ZC+T1_NUMCTXS_ZC) |
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76 | #define T1_CTXNO_MAG (T1_CTXNO_SC+T1_NUMCTXS_SC) |
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77 | #define T1_CTXNO_AGG (T1_CTXNO_MAG+T1_NUMCTXS_MAG) |
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78 | #define T1_CTXNO_UNI (T1_CTXNO_AGG+T1_NUMCTXS_AGG) |
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79 | #define T1_NUMCTXS (T1_CTXNO_UNI+T1_NUMCTXS_UNI) |
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80 | |||
81 | #define T1_NMSEDEC_FRACBITS (T1_NMSEDEC_BITS-1) |
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82 | |||
83 | #define T1_TYPE_MQ 0 /**< Normal coding using entropy coder */ |
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84 | #define T1_TYPE_RAW 1 /**< No encoding the information is store under raw format in codestream (mode switch RAW)*/ |
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85 | |||
86 | /* ----------------------------------------------------------------------- */ |
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87 | |||
88 | typedef short flag_t; |
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89 | |||
90 | /** |
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91 | Tier-1 coding (coding of code-block coefficients) |
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92 | */ |
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93 | typedef struct opj_t1 { |
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94 | /** codec context */ |
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95 | opj_common_ptr cinfo; |
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96 | |||
97 | /** MQC component */ |
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98 | opj_mqc_t *mqc; |
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99 | /** RAW component */ |
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100 | opj_raw_t *raw; |
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101 | |||
102 | int *data; |
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103 | flag_t *flags; |
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104 | int w; |
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105 | int h; |
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106 | int datasize; |
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107 | int flagssize; |
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108 | int flags_stride; |
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109 | } opj_t1_t; |
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110 | |||
111 | #define MACRO_t1_flags(x,y) t1->flags[((x)*(t1->flags_stride))+(y)] |
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112 | |||
113 | /** @name Exported functions */ |
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114 | /*@{*/ |
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115 | /* ----------------------------------------------------------------------- */ |
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116 | /** |
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117 | Create a new T1 handle |
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118 | and initialize the look-up tables of the Tier-1 coder/decoder |
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119 | @return Returns a new T1 handle if successful, returns NULL otherwise |
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120 | @see t1_init_luts |
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121 | */ |
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122 | opj_t1_t* t1_create(opj_common_ptr cinfo); |
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123 | /** |
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124 | Destroy a previously created T1 handle |
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125 | @param t1 T1 handle to destroy |
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126 | */ |
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127 | void t1_destroy(opj_t1_t *t1); |
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128 | /** |
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129 | Encode the code-blocks of a tile |
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130 | @param t1 T1 handle |
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131 | @param tile The tile to encode |
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132 | @param tcp Tile coding parameters |
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133 | */ |
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134 | void t1_encode_cblks(opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp); |
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135 | /** |
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136 | Decode the code-blocks of a tile |
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137 | @param t1 T1 handle |
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138 | @param tilec The tile to decode |
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139 | @param tccp Tile coding parameters |
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140 | */ |
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141 | void t1_decode_cblks(opj_t1_t* t1, opj_tcd_tilecomp_t* tilec, opj_tccp_t* tccp); |
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142 | /* ----------------------------------------------------------------------- */ |
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143 | /*@}*/ |
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144 | |||
145 | /*@}*/ |
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146 | |||
147 | #endif /* __T1_H */>>>>>>>>>> |