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| author | Mathieu Malaterre <mathieu.malaterre@gmail.com> | 2012-09-28 08:11:41 +0000 |
|---|---|---|
| committer | Mathieu Malaterre <mathieu.malaterre@gmail.com> | 2012-09-28 08:11:41 +0000 |
| commit | d518970039a19a2a9b6d2bdd592cc88a43897bbb (patch) | |
| tree | 57bac2cf7e63e9352228231062763baac627563c /src/lib/openjp2/dwt.h | |
| parent | 8363a6ab1e031bb4b2e40a92e56efd40fdab1aa1 (diff) | |
[trunk] Start FolderReorgProposal task
Update issue 177
Diffstat (limited to 'src/lib/openjp2/dwt.h')
| -rw-r--r-- | src/lib/openjp2/dwt.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/src/lib/openjp2/dwt.h b/src/lib/openjp2/dwt.h new file mode 100644 index 00000000..88308164 --- /dev/null +++ b/src/lib/openjp2/dwt.h @@ -0,0 +1,122 @@ +/* + * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium + * Copyright (c) 2002-2007, Professor Benoit Macq + * Copyright (c) 2001-2003, David Janssens + * Copyright (c) 2002-2003, Yannick Verschueren + * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe + * Copyright (c) 2005, Herve Drolon, FreeImage Team + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __DWT_H +#define __DWT_H +/** +@file dwt.h +@brief Implementation of a discrete wavelet transform (DWT) + +The functions in DWT.C have for goal to realize forward and inverse discret wavelet +transform with filter 5-3 (reversible) and filter 9-7 (irreversible). The functions in +DWT.C are used by some function in TCD.C. +*/ + +/** @defgroup DWT DWT - Implementation of a discrete wavelet transform */ +/*@{*/ + + +/** @name Exported functions */ +/*@{*/ +/* ----------------------------------------------------------------------- */ +/** +Forward 5-3 wavelet tranform in 2-D. +Apply a reversible DWT transform to a component of an image. +@param tilec Tile component information (current tile) +*/ +opj_bool opj_dwt_encode(opj_tcd_tilecomp_v2_t * tilec); + +/** +Inverse 5-3 wavelet tranform in 2-D. +Apply a reversible inverse DWT transform to a component of an image. +@param tilec Tile component information (current tile) +@param numres Number of resolution levels to decode +*/ +opj_bool opj_dwt_decode(opj_tcd_tilecomp_v2_t* tilec, OPJ_UINT32 numres); + +/** +Get the gain of a subband for the reversible 5-3 DWT. +@param orient Number that identifies the subband (0->LL, 1->HL, 2->LH, 3->HH) +@return Returns 0 if orient = 0, returns 1 if orient = 1 or 2, returns 2 otherwise +*/ +OPJ_UINT32 opj_dwt_getgain(OPJ_UINT32 orient) ; +/** +Get the norm of a wavelet function of a subband at a specified level for the reversible 5-3 DWT. +@param level Level of the wavelet function +@param orient Band of the wavelet function +@return Returns the norm of the wavelet function +*/ +double dwt_getnorm(int level, int orient); /* TODO REMOVE IT*/ +OPJ_FLOAT64 opj_dwt_getnorm(OPJ_UINT32 level, OPJ_UINT32 orient); +/** +Forward 9-7 wavelet transform in 2-D. +Apply an irreversible DWT transform to a component of an image. +@param tilec Tile component information (current tile) +*/ +opj_bool opj_dwt_encode_real(opj_tcd_tilecomp_v2_t * tilec); +/** +KEEP TRUNK VERSION + return type of v2 because rev557 +Inverse 9-7 wavelet transform in 2-D. +Apply an irreversible inverse DWT transform to a component of an image. +@param tilec Tile component information (current tile) +@param numres Number of resolution levels to decode +*/ +/* V1 void dwt_decode_real(opj_tcd_tilecomp_t* tilec, int numres); */ +opj_bool dwt_decode_real(opj_tcd_tilecomp_t* tilec, int numres); + +opj_bool dwt_decode_real_v2(opj_tcd_tilecomp_v2_t* restrict tilec, OPJ_UINT32 numres); + +/** +Get the gain of a subband for the irreversible 9-7 DWT. +@param orient Number that identifies the subband (0->LL, 1->HL, 2->LH, 3->HH) +@return Returns the gain of the 9-7 wavelet transform +*/ +OPJ_UINT32 opj_dwt_getgain_real(OPJ_UINT32 orient); +/** +Get the norm of a wavelet function of a subband at a specified level for the irreversible 9-7 DWT +@param level Level of the wavelet function +@param orient Band of the wavelet function +@return Returns the norm of the 9-7 wavelet +*/ +double dwt_getnorm_real(int level, int orient); +OPJ_FLOAT64 opj_dwt_getnorm_real(OPJ_UINT32 level, OPJ_UINT32 orient); +/** +Explicit calculation of the Quantization Stepsizes +@param tccp Tile-component coding parameters +@param prec Precint analyzed +*/ +void opj_dwt_calc_explicit_stepsizes(opj_tccp_t * tccp, OPJ_UINT32 prec); +/* ----------------------------------------------------------------------- */ +/*@}*/ + +/*@}*/ + +#endif /* __DWT_H */ |
