mct.h 3.8 KB

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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. #ifndef __MCT_H
  32. #define __MCT_H
  33. /**
  34. @file mct.h
  35. @brief Implementation of a multi-component transforms (MCT)
  36. The functions in MCT.C have for goal to realize reversible and irreversible multicomponent
  37. transform. The functions in MCT.C are used by some function in TCD.C.
  38. */
  39. /** @defgroup MCT MCT - Implementation of a multi-component transform */
  40. /*@{*/
  41. /** @name Exported functions */
  42. /*@{*/
  43. /* ----------------------------------------------------------------------- */
  44. /**
  45. Apply a reversible multi-component transform to an image
  46. @param c0 Samples for red component
  47. @param c1 Samples for green component
  48. @param c2 Samples blue component
  49. @param n Number of samples for each component
  50. */
  51. void mct_encode(int *c0, int *c1, int *c2, int n);
  52. /**
  53. Apply a reversible multi-component inverse transform to an image
  54. @param c0 Samples for luminance component
  55. @param c1 Samples for red chrominance component
  56. @param c2 Samples for blue chrominance component
  57. @param n Number of samples for each component
  58. */
  59. void mct_decode(int *c0, int *c1, int *c2, int n);
  60. /**
  61. Get norm of the basis function used for the reversible multi-component transform
  62. @param compno Number of the component (0->Y, 1->U, 2->V)
  63. @return
  64. */
  65. double mct_getnorm(int compno);
  66. /**
  67. Apply an irreversible multi-component transform to an image
  68. @param c0 Samples for red component
  69. @param c1 Samples for green component
  70. @param c2 Samples blue component
  71. @param n Number of samples for each component
  72. */
  73. void mct_encode_real(int *c0, int *c1, int *c2, int n);
  74. /**
  75. Apply an irreversible multi-component inverse transform to an image
  76. @param c0 Samples for luminance component
  77. @param c1 Samples for red chrominance component
  78. @param c2 Samples for blue chrominance component
  79. @param n Number of samples for each component
  80. */
  81. void mct_decode_real(float* c0, float* c1, float* c2, int n);
  82. /**
  83. Get norm of the basis function used for the irreversible multi-component transform
  84. @param compno Number of the component (0->Y, 1->U, 2->V)
  85. @return
  86. */
  87. double mct_getnorm_real(int compno);
  88. /* ----------------------------------------------------------------------- */
  89. /*@}*/
  90. /*@}*/
  91. #endif /* __MCT_H */