100 lines
3.9 KiB
C
100 lines
3.9 KiB
C
/*
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* Copyright (c) 2001-2002, David Janssens
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* Copyright (c) 2002-2003, Yannick Verschueren
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* Copyright (c) 2002-2003, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tcd.h"
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#ifndef __DWT_H
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#define __DWT_H
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/*
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* Apply a reversible DWT transform to a component of an image
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* a: samples of the component
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* w: width of the component
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* h: height of the component
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* tilec : tile component information (present tile)
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* l: number of decomposition levels in the DWT
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*/
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/* void dwt_encode(int* a, int w, int h, int l); */
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void dwt_encode(int *a, int w, int h, tcd_tilecomp_t * tilec, int l);
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/*
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* Apply a reversible inverse DWT transform to a component of an image
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* a: samples of the component
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* w: width of the component
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* h: height of the component
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* tilec : tile component information (present tile)
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* l: number of decomposition levels in the DWT
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* row_tilec : tile component information (previous tile on the same row)
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* col_tilec : tile component information (previous tile on the same column)
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*/
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void dwt_decode(int *a, int w, int h, tcd_tilecomp_t * tilec, int l);//, tcd_tilecomp_t * row_tilec, tcd_tilecomp_t * col_tilec);
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/*
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* Get the gain of a subband for the reversible DWT
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* orient: number that identifies the subband (0->LL, 1->HL, 2->LH, 3->HH)
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*/
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int dwt_getgain(int orient);
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/*
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* Get the norm of a wavelet function of a subband at a specified level for the reversible DWT
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* level: level of the wavelet function
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* orient: band of the wavelet function
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*/
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double dwt_getnorm(int level, int orient);
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/*
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* Apply an irreversible DWT transform to a component of an image
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* a: samples of the component
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* w: width of the component
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* h: height of the component
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* l: number of decomposition levels in the DWT
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*/
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void dwt_encode_real(int *a, int w, int h, tcd_tilecomp_t * tilec, int l);
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/*
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* Apply an irreversible inverse DWT transform to a component of an image
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* a: samples of the component
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* w: width of the component
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* h: height of the component
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* l: number of decomposition levels in the DWT
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*/
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void dwt_decode_real(int *a, int w, int h, tcd_tilecomp_t * tilec, int l);//, tcd_tilecomp_t * row_tilec, tcd_tilecomp_t * col_tilec);
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/*
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* Get the gain of a subband for the irreversible DWT
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* orient: number that identifies the subband (0->LL, 1->HL, 2->LH, 3->HH)
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*/
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int dwt_getgain_real(int orient);
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/*
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* Get the norm of a wavelet function of a subband at a specified level for the irreversible DWT
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* level: level of the wavelet function
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* orient: band of the wavelet function
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*/
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double dwt_getnorm_real(int level, int orient);
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#endif
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