Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/openjpeg/src/lib/openjp2/dwt.h @ 40:aa33339d6b8a upstream

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ADD: MuPDF v1.26.10: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.5.
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 11:31:38 +0200
parents b50eed0cc0ef
children
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1 /*
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2 * The copyright in this software is being made available under the 2-clauses
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3 * BSD License, included below. This software may be subject to other third
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4 * party and contributor rights, including patent rights, and no such rights
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5 * are granted under this license.
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6 *
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7 * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
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8 * Copyright (c) 2002-2014, Professor Benoit Macq
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9 * Copyright (c) 2001-2003, David Janssens
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10 * Copyright (c) 2002-2003, Yannick Verschueren
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11 * Copyright (c) 2003-2007, Francois-Olivier Devaux
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12 * Copyright (c) 2003-2014, Antonin Descampe
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13 * Copyright (c) 2005, Herve Drolon, FreeImage Team
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14 * All rights reserved.
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15 *
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16 * Redistribution and use in source and binary forms, with or without
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17 * modification, are permitted provided that the following conditions
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18 * are met:
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19 * 1. Redistributions of source code must retain the above copyright
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20 * notice, this list of conditions and the following disclaimer.
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21 * 2. Redistributions in binary form must reproduce the above copyright
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22 * notice, this list of conditions and the following disclaimer in the
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23 * documentation and/or other materials provided with the distribution.
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24 *
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25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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26 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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28 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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29 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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35 * POSSIBILITY OF SUCH DAMAGE.
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36 */
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37
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38 #ifndef OPJ_DWT_H
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39 #define OPJ_DWT_H
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40 /**
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41 @file dwt.h
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42 @brief Implementation of a discrete wavelet transform (DWT)
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43
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44 The functions in DWT.C have for goal to realize forward and inverse discret wavelet
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45 transform with filter 5-3 (reversible) and filter 9-7 (irreversible). The functions in
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46 DWT.C are used by some function in TCD.C.
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47 */
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48
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49 /** @defgroup DWT DWT - Implementation of a discrete wavelet transform */
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50 /*@{*/
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51
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52
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53 /** @name Exported functions */
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54 /*@{*/
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55 /* ----------------------------------------------------------------------- */
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56 /**
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57 Forward 5-3 wavelet transform in 2-D.
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58 Apply a reversible DWT transform to a component of an image.
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59 @param p_tcd TCD handle
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60 @param tilec Tile component information (current tile)
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61 */
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62 OPJ_BOOL opj_dwt_encode(opj_tcd_t *p_tcd,
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63 opj_tcd_tilecomp_t * tilec);
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64
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65 /**
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66 Inverse 5-3 wavelet transform in 2-D.
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67 Apply a reversible inverse DWT transform to a component of an image.
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68 @param p_tcd TCD handle
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69 @param tilec Tile component information (current tile)
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70 @param numres Number of resolution levels to decode
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71 */
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72 OPJ_BOOL opj_dwt_decode(opj_tcd_t *p_tcd,
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73 opj_tcd_tilecomp_t* tilec,
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74 OPJ_UINT32 numres);
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75
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76 /**
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77 Get the norm of a wavelet function of a subband at a specified level for the reversible 5-3 DWT.
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78 @param level Level of the wavelet function
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79 @param orient Band of the wavelet function
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80 @return Returns the norm of the wavelet function
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81 */
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82 OPJ_FLOAT64 opj_dwt_getnorm(OPJ_UINT32 level, OPJ_UINT32 orient);
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83 /**
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84 Forward 9-7 wavelet transform in 2-D.
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85 Apply an irreversible DWT transform to a component of an image.
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86 @param p_tcd TCD handle
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87 @param tilec Tile component information (current tile)
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88 */
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89 OPJ_BOOL opj_dwt_encode_real(opj_tcd_t *p_tcd,
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90 opj_tcd_tilecomp_t * tilec);
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91 /**
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92 Inverse 9-7 wavelet transform in 2-D.
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93 Apply an irreversible inverse DWT transform to a component of an image.
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94 @param p_tcd TCD handle
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95 @param tilec Tile component information (current tile)
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96 @param numres Number of resolution levels to decode
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97 */
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98 OPJ_BOOL opj_dwt_decode_real(opj_tcd_t *p_tcd,
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99 opj_tcd_tilecomp_t* OPJ_RESTRICT tilec,
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100 OPJ_UINT32 numres);
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101
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102 /**
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103 Get the norm of a wavelet function of a subband at a specified level for the irreversible 9-7 DWT
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104 @param level Level of the wavelet function
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105 @param orient Band of the wavelet function
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106 @return Returns the norm of the 9-7 wavelet
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107 */
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108 OPJ_FLOAT64 opj_dwt_getnorm_real(OPJ_UINT32 level, OPJ_UINT32 orient);
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109 /**
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110 Explicit calculation of the Quantization Stepsizes
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111 @param tccp Tile-component coding parameters
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112 @param prec Precint analyzed
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113 */
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114 void opj_dwt_calc_explicit_stepsizes(opj_tccp_t * tccp, OPJ_UINT32 prec);
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115 /* ----------------------------------------------------------------------- */
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116 /*@}*/
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117
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118 /*@}*/
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119
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120 #endif /* OPJ_DWT_H */