2 * Copyright (c) 2001-2002, David Janssens
3 * Copyright (c) 2002-2003, Yannick Verschueren
4 * Copyright (c) 2002-2003, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
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35 * Apply a reversible DWT transform to a component of an image
36 * a: samples of the component
37 * w: width of the component
38 * h: height of the component
39 * l: number of decomposition levels in the DWT
41 /* void dwt_encode(int* a, int w, int h, int l); */
42 void dwt_encode(int *a, int w, int h, tcd_tilecomp_t * tilec, int l);
44 * Apply a reversible inverse DWT transform to a component of an image
45 * a: samples of the component
46 * w: width of the component
47 * h: height of the component
48 * l: number of decomposition levels in the DWT
50 void dwt_decode(int *a, int w, int h, tcd_tilecomp_t * tilec, int l,
51 tcd_tilecomp_t * row_tilec, tcd_tilecomp_t * col_tilec);
52 /* void dwt_decode(int* a, int w, int h,tcd_tilecomp_t *tilec, int l); */
54 * Get the gain of a subband for the reversible DWT
55 * orient: number that identifies the subband (0->LL, 1->HL, 2->LH, 3->HH)
57 int dwt_getgain(int orient);
60 * Get the norm of a wavelet function of a subband at a specified level for the reversible DWT
61 * level: level of the wavelet function
62 * orient: band of the wavelet function
64 double dwt_getnorm(int level, int orient);
67 * Apply an irreversible DWT transform to a component of an image
68 * a: samples of the component
69 * w: width of the component
70 * h: height of the component
71 * l: number of decomposition levels in the DWT
73 void dwt_encode_real(int *a, int w, int h, tcd_tilecomp_t * tilec, int l);
76 * Apply an irreversible inverse DWT transform to a component of an image
77 * a: samples of the component
78 * w: width of the component
79 * h: height of the component
80 * l: number of decomposition levels in the DWT
82 void dwt_decode_real(int *a, int w, int h, tcd_tilecomp_t * tilec, int l,
83 tcd_tilecomp_t * row_tilec,
84 tcd_tilecomp_t * col_tilec);
86 * Get the gain of a subband for the irreversible DWT
87 * orient: number that identifies the subband (0->LL, 1->HL, 2->LH, 3->HH)
89 int dwt_getgain_real(int orient);
92 * Get the norm of a wavelet function of a subband at a specified level for the irreversible DWT
93 * level: level of the wavelet function
94 * orient: band of the wavelet function
96 double dwt_getnorm_real(int level, int orient);