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  1. /*
  2.  * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
  3.  * Copyright (c) 2002-2007, Professor Benoit Macq
  4.  * Copyright (c) 2001-2003, David Janssens
  5.  * Copyright (c) 2002-2003, Yannick Verschueren
  6.  * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
  7.  * Copyright (c) 2005, Herve Drolon, FreeImage Team
  8.  * All rights reserved.
  9.  *
  10.  * Redistribution and use in source and binary forms, with or without
  11.  * modification, are permitted provided that the following conditions
  12.  * are met:
  13.  * 1. Redistributions of source code must retain the above copyright
  14.  *    notice, this list of conditions and the following disclaimer.
  15.  * 2. Redistributions in binary form must reproduce the above copyright
  16.  *    notice, this list of conditions and the following disclaimer in the
  17.  *    documentation and/or other materials provided with the distribution.
  18.  *
  19.  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
  20.  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21.  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22.  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  23.  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24.  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25.  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26.  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27.  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28.  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29.  * POSSIBILITY OF SUCH DAMAGE.
  30.  */
  31.  
  32. #ifndef __MCT_H
  33. #define __MCT_H
  34. /**
  35. @file mct.h
  36. @brief Implementation of a multi-component transforms (MCT)
  37.  
  38. The functions in MCT.C have for goal to realize reversible and irreversible multicomponent
  39. transform. The functions in MCT.C are used by some function in TCD.C.
  40. */
  41.  
  42. /** @defgroup MCT MCT - Implementation of a multi-component transform */
  43. /*@{*/
  44.  
  45. /** @name Exported functions */
  46. /*@{*/
  47. /* ----------------------------------------------------------------------- */
  48. /**
  49. Apply a reversible multi-component transform to an image
  50. @param c0 Samples for red component
  51. @param c1 Samples for green component
  52. @param c2 Samples blue component
  53. @param n Number of samples for each component
  54. */
  55. void mct_encode(int *c0, int *c1, int *c2, int n);
  56. /**
  57. Apply a reversible multi-component inverse transform to an image
  58. @param c0 Samples for luminance component
  59. @param c1 Samples for red chrominance component
  60. @param c2 Samples for blue chrominance component
  61. @param n Number of samples for each component
  62. */
  63. void mct_decode(int *c0, int *c1, int *c2, int n);
  64. /**
  65. Get norm of the basis function used for the reversible multi-component transform
  66. @param compno Number of the component (0->Y, 1->U, 2->V)
  67. @return
  68. */
  69. double mct_getnorm(int compno);
  70.  
  71. /**
  72. Apply an irreversible multi-component transform to an image
  73. @param c0 Samples for red component
  74. @param c1 Samples for green component
  75. @param c2 Samples blue component
  76. @param n Number of samples for each component
  77. */
  78. void mct_encode_real(int *c0, int *c1, int *c2, int n);
  79. /**
  80. Apply an irreversible multi-component inverse transform to an image
  81. @param c0 Samples for luminance component
  82. @param c1 Samples for red chrominance component
  83. @param c2 Samples for blue chrominance component
  84. @param n Number of samples for each component
  85. */
  86. void mct_decode_real(float* c0, float* c1, float* c2, int n);
  87. /**
  88. Get norm of the basis function used for the irreversible multi-component transform
  89. @param compno Number of the component (0->Y, 1->U, 2->V)
  90. @return
  91. */
  92. double mct_getnorm_real(int compno);
  93. /* ----------------------------------------------------------------------- */
  94. /*@}*/
  95.  
  96. /*@}*/
  97.  
  98. #endif /* __MCT_H */
  99.