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| Rev | Author | Line No. | Line |
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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 */ |