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 * tilec : tile component information (present tile)
40 * l: number of decomposition levels in the DWT
42 /* void dwt_encode(int* a, int w, int h, int l); */
43 void dwt_encode(int *a, int w, int h, tcd_tilecomp_t * tilec, int l);
45 * Apply a reversible inverse DWT transform to a component of an image
46 * a: samples of the component
47 * w: width of the component
48 * h: height of the component
49 * tilec : tile component information (present tile)
50 * l: number of decomposition levels in the DWT
51 * row_tilec : tile component information (previous tile on the same row)
52 * col_tilec : tile component information (previous tile on the same column)
54 void dwt_decode(int *a, int w, int h, tcd_tilecomp_t * tilec, int l,
58 * Get the gain of a subband for the reversible DWT
59 * orient: number that identifies the subband (0->LL, 1->HL, 2->LH, 3->HH)
61 int dwt_getgain(int orient);
64 * Get the norm of a wavelet function of a subband at a specified level for the reversible DWT
65 * level: level of the wavelet function
66 * orient: band of the wavelet function
68 double dwt_getnorm(int level, int orient);
71 * Apply an irreversible DWT transform to a component of an image
72 * a: samples of the component
73 * w: width of the component
74 * h: height of the component
75 * l: number of decomposition levels in the DWT
77 void dwt_encode_real(int *a, int w, int h, tcd_tilecomp_t * tilec, int l);
80 * Apply an irreversible inverse DWT transform to a component of an image
81 * a: samples of the component
82 * w: width of the component
83 * h: height of the component
84 * l: number of decomposition levels in the DWT
86 void dwt_decode_real(int *a, int w, int h, tcd_tilecomp_t * tilec, int l,
89 * Get the gain of a subband for the irreversible DWT
90 * orient: number that identifies the subband (0->LL, 1->HL, 2->LH, 3->HH)
92 int dwt_getgain_real(int orient);
95 * Get the norm of a wavelet function of a subband at a specified level for the irreversible DWT
96 * level: level of the wavelet function
97 * orient: band of the wavelet function
99 double dwt_getnorm_real(int level, int orient);