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Diffstat (limited to 'core/src/fxcodec/fx_libopenjpeg/libopenjpeg20/dwt.h')
| -rw-r--r-- | core/src/fxcodec/fx_libopenjpeg/libopenjpeg20/dwt.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/core/src/fxcodec/fx_libopenjpeg/libopenjpeg20/dwt.h b/core/src/fxcodec/fx_libopenjpeg/libopenjpeg20/dwt.h new file mode 100644 index 0000000000..f8b57bc0c7 --- /dev/null +++ b/core/src/fxcodec/fx_libopenjpeg/libopenjpeg20/dwt.h @@ -0,0 +1,122 @@ +/* + * The copyright in this software is being made available under the 2-clauses + * BSD License, included below. This software may be subject to other third + * party and contributor rights, including patent rights, and no such rights + * are granted under this license. + * + * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium + * Copyright (c) 2002-2014, Professor Benoit Macq + * Copyright (c) 2001-2003, David Janssens + * Copyright (c) 2002-2003, Yannick Verschueren + * Copyright (c) 2003-2007, Francois-Olivier Devaux + * Copyright (c) 2003-2014, 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_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_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 +*/ +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_t * tilec); +/** +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 +*/ +OPJ_BOOL opj_dwt_decode_real(opj_tcd_tilecomp_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 +*/ +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 */ |