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/*================================================================================================*\
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|| ||
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|| /$$$$$$$ /$$ /$$ /$$ /$$ ||
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|| | $$__ $$|__/ | $$ /$ | $$| $$ ||
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|| | $$ \ $$ /$$ /$$$$$$ | $$ /$$$| $$| $$$$$$$ /$$$$$$ /$$$$$$ /$$$$$$ ||
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|| | $$$$$$$ | $$ /$$__ $$ | $$/$$ $$ $$| $$__ $$ /$$__ $$ /$$__ $$ /$$__ $$ ||
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|| | $$__ $$| $$| $$ \ $$ | $$$$_ $$$$| $$ \ $$| $$ \ $$| $$ \ $$| $$ \ $$ ||
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|| | $$ \ $$| $$| $$ | $$ | $$$/ \ $$$| $$ | $$| $$ | $$| $$ | $$| $$ | $$ ||
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|| | $$$$$$$/| $$| $$$$$$$ | $$/ \ $$| $$ | $$| $$$$$$/| $$$$$$/| $$$$$$$/ ||
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|| |_______/ |__/ \____ $$ |__/ \__/|__/ |__/ \______/ \______/ | $$____/ ||
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|| /$$ \ $$ | $$ ||
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|| | $$$$$$/ | $$ ||
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|| \______/ |__/ ||
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|| DESCRIPTION: ||
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|| ------------ ||
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|| ||
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|| This file describes a set of functions that can be used to performe the forward/ ||
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|| inverse discrete wavelet transform on 1- to 4-dimensional IEEE 754 data-sets. ||
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|| For more information please refere to JPEG2000 by D. S. Taubman and M. W. ||
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|| Marcellin. ||
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|| -------------------------------------------------------------------------------------------- ||
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|| Copyright (c) 2023, High Performance Computing Center - University of Stuttgart ||
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|| ||
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|| Redistribution and use in source and binary forms, with or without modification, are ||
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|| permitted provided that the following conditions are met: ||
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|| ||
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|| (1) Redistributions of source code must retain the above copyright notice, this list of ||
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|| conditions and the following disclaimer. ||
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|| ||
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|| (2) Redistributions in binary form must reproduce the above copyright notice, this list ||
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|| of conditions and the following disclaimer in the documentation and/or other ||
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|| 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” AND ANY EXPRESS ||
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|| OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF ||
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|| MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE ||
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|| COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, ||
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|| EXEMPLARY, OR 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 INTERRUPTION) ||
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|| HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR ||
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|| TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, ||
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|| EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ||
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|| ||
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\*================================================================================================*/
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2023-06-20 11:43:33 +00:00
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#ifndef DWT_H
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#define DWT_H
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2024-02-22 10:27:40 +00:00
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/************************************************************************************************\
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|| _ _ _ ____ _ _ _ ___ ____ ||
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|| | |\ | | | | | | \ |___ ||
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|| | | \| |___ |___ |__| |__/ |___ ||
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|| ||
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\************************************************************************************************/
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#include "types.h"
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2023-06-20 11:43:33 +00:00
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/************************************************************************************************\
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|| _ _ ____ ____ ____ ____ ____ ||
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|| |\/| |__| | |__/ | | [__ ||
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|| | | | | |___ | \ |__| ___] ||
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\************************************************************************************************/
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/*----------------------------------------------------------------------------------------------*\
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! !
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! DESCRIPTION: !
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! ------------ !
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! !
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! Maximum number of wavelet layers for which the energy gain is calculated. !
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! !
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\*----------------------------------------------------------------------------------------------*/
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#define MAX_DECOMP_LEVELS 4
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/*----------------------------------------------------------------------------------------------*\
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! !
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! DESCRIPTION: !
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! ------------ !
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! !
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! These macros define the irrational coefficients for the high and low pass !
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! synthesis filters associated with the (9-7) Cohen-Daubechies-Feauveau-Wavelet !
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! as well as the coefficients for its coressponding lifting scheme. !
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! !
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\*----------------------------------------------------------------------------------------------*/
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#define DWT_9X7_H0 1.115087052457000f // Low pass synthesis filter ...
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#define DWT_9X7_H1 0.591271763114250f // ... coefficients
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#define DWT_9X7_H2 -0.057543526228500f
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#define DWT_9X7_H3 -0.091271763114250f
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#define DWT_9X7_G0 1.205898036472721f // High pass synthesis filter ...
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#define DWT_9X7_G1 -0.533728236885750f // ... coefficients
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#define DWT_9X7_G2 -0.156446533057980f
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#define DWT_9X7_G3 0.033728236885750f
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#define DWT_9X7_G4 0.053497514821620f
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#define ALPHA -1.586134342059924f // Lifting coefficients.
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#define BETA -0.052980118572961f
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#define GAMMA 0.882911075530934f
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#define DELTA 0.360523644801462f
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#define KAPPA_H 1.230174104914001f
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#define KAPPA_L 0.812893066115961f
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/*----------------------------------------------------------------------------------------------*\
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! !
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! DESCRIPTION: !
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! ------------ !
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! !
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! These macros define the irrational coefficients for the high and low pass !
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! synthesis filters associated with the (5-3) LeGall-Wavelet. !
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! !
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\*----------------------------------------------------------------------------------------------*/
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#define DWT_5X3_H0 1.0f // Low pass synthesis filter ...
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#define DWT_5X3_H1 0.5f // ... coefficients
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#define DWT_5X3_G0 0.75f // High pass synthesis filter
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#define DWT_5X3_G1 -0.25f // ... coefficients
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#define DWT_5X3_G2 -0.125f
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2023-06-20 11:43:33 +00:00
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2024-02-22 10:27:40 +00:00
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/*----------------------------------------------------------------------------------------------*\
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! !
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! DESCRIPTION: !
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! ------------ !
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! !
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! These macros define the irrational coefficients for the high and low pass !
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! synthesis filters associated with the Haar-Wavelet. !
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! !
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\*----------------------------------------------------------------------------------------------*/
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#define DWT_HAAR_H0 1 // Low pass synthesis filter ...
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#define DWT_HAAR_H1 1 // ... coefficients
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#define DWT_HAAR_G0 0.5 // High pass synthesis filter ...
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#define DWT_HAAR_G1 -0.5 // ... coefficients
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2023-06-20 11:43:33 +00:00
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2024-02-22 10:27:40 +00:00
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/************************************************************************************************\
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|| ____ _ _ ___ ____ ____ _ _ ____ _ _ _ ____ ____ _ ____ ___ _ ____ ____ ||
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|| |___ \/ | |___ |__/ |\ | |__| | | | |__| |__/ | |__| |__] | |___ [__ ||
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|| |___ _/\_ | |___ | \ | \| | | |___ \/ | | | \ | | | |__] |___ |___ ___] ||
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|| ||
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\************************************************************************************************/
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/*----------------------------------------------------------------------------------------------*\
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! !
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! DESCRIPTION: !
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! ------------ !
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! !
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! This array defines a lookup table used to store the energy gain factors for the !
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! one dimensional CDF(9/7), LeGall-(5/3) and Haar wavelet transform. Each LUT !
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! contains energy gain factors for the 6 low-pass and 6 high-pass decomposition !
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! including level zero. !
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! !
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\*----------------------------------------------------------------------------------------------*/
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extern double DWT_ENERGY_GAIN_LUT[3][2 * MAX_DECOMP_LEVELS + 2];
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2023-06-20 11:43:33 +00:00
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2024-02-22 10:27:40 +00:00
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/************************************************************************************************\
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|| ___ _ _ ___ _ _ ____ ____ _ _ _ _ ____ ___ _ ____ _ _ ____ ||
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|| |__] | | |__] | | | |___ | | |\ | | | | | | |\ | [__ ||
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|| | |__| |__] |___ | |___ | |__| | \| |___ | | |__| | \| ___] ||
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\************************************************************************************************/
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uchar initialize_gain_lut ();
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//==========|==========================|======================|======|=======|====================
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bwc_float get_dwt_energy_gain (bwc_codec *const codec,
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uchar const highband_flag,
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uint16 const level);
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//==========|==========================|======================|======|=======|====================
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uchar forward_wavelet_transform (bwc_codec *const codec,
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bwc_parameter *const parameter);
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//==========|==========================|======================|======|=======|====================
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uchar inverse_wavelet_transform (bwc_codec *const codec,
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bwc_parameter *const parameter);
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#endif
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