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44 @brief Implementation of a multi-component transforms (MCT)
46 The functions in MCT.C have for goal to realize reversible and irreversible multicomponent
47 transform. The functions in MCT.C are used by some function in TCD.C.
50 /** @defgroup MCT MCT - Implementation of a multi-component transform */
53 /** @name Exported functions */
55 /* ----------------------------------------------------------------------- */
57 Apply a reversible multi-component transform to an image
58 @param c0 Samples for red component
59 @param c1 Samples for green component
60 @param c2 Samples blue component
61 @param n Number of samples for each component
63 void opj_mct_encode(OPJ_INT32* OPJ_RESTRICT c0, OPJ_INT32* OPJ_RESTRICT c1,
64 OPJ_INT32* OPJ_RESTRICT c2, OPJ_SIZE_T n);
66 Apply a reversible multi-component inverse transform to an image
67 @param c0 Samples for luminance component
68 @param c1 Samples for red chrominance component
69 @param c2 Samples for blue chrominance component
70 @param n Number of samples for each component
72 void opj_mct_decode(OPJ_INT32* OPJ_RESTRICT c0, OPJ_INT32* OPJ_RESTRICT c1,
73 OPJ_INT32* OPJ_RESTRICT c2, OPJ_SIZE_T n);
75 Get norm of the basis function used for the reversible multi-component transform
76 @param compno Number of the component (0->Y, 1->U, 2->V)
79 OPJ_FLOAT64 opj_mct_getnorm(OPJ_UINT32 compno);
82 Apply an irreversible multi-component transform to an image
83 @param c0 Samples for red component
84 @param c1 Samples for green component
85 @param c2 Samples blue component
86 @param n Number of samples for each component
88 void opj_mct_encode_real(OPJ_FLOAT32* OPJ_RESTRICT c0,
89 OPJ_FLOAT32* OPJ_RESTRICT c1,
90 OPJ_FLOAT32* OPJ_RESTRICT c2, OPJ_SIZE_T n);
92 Apply an irreversible multi-component inverse transform to an image
93 @param c0 Samples for luminance component
94 @param c1 Samples for red chrominance component
95 @param c2 Samples for blue chrominance component
96 @param n Number of samples for each component
98 void opj_mct_decode_real(OPJ_FLOAT32* OPJ_RESTRICT c0,
99 OPJ_FLOAT32* OPJ_RESTRICT c1, OPJ_FLOAT32* OPJ_RESTRICT c2, OPJ_SIZE_T n);
101 Get norm of the basis function used for the irreversible multi-component transform
102 @param compno Number of the component (0->Y, 1->U, 2->V)
105 OPJ_FLOAT64 opj_mct_getnorm_real(OPJ_UINT32 compno);
109 @param p_coding_data MCT data
110 @param n size of components
111 @param p_data components
112 @param p_nb_comp nb of components (i.e. size of p_data)
113 @param is_signed tells if the data is signed
114 @return OPJ_FALSE if function encounter a problem, OPJ_TRUE otherwise
116 OPJ_BOOL opj_mct_encode_custom(
117 OPJ_BYTE * p_coding_data,
120 OPJ_UINT32 p_nb_comp,
121 OPJ_UINT32 is_signed);
124 @param pDecodingData MCT data
125 @param n size of components
126 @param pData components
127 @param pNbComp nb of components (i.e. size of p_data)
128 @param isSigned tells if the data is signed
129 @return OPJ_FALSE if function encounter a problem, OPJ_TRUE otherwise
131 OPJ_BOOL opj_mct_decode_custom(
132 OPJ_BYTE * pDecodingData,
136 OPJ_UINT32 isSigned);
139 @param pNorms MCT data
140 @param p_nb_comps size of components
141 @param pMatrix components
144 void opj_calculate_norms(OPJ_FLOAT64 * pNorms,
145 OPJ_UINT32 p_nb_comps,
146 OPJ_FLOAT32 * pMatrix);
150 const OPJ_FLOAT64 * opj_mct_get_mct_norms(void);
154 const OPJ_FLOAT64 * opj_mct_get_mct_norms_real(void);
155 /* ----------------------------------------------------------------------- */
160 #endif /* OPJ_MCT_H */