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comparison jctvc/TLibCommon/TComInterpolationFilter.h @ 0:772086c29cc7

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Initial import.
author Matti Hamalainen <ccr@tnsp.org>
date Wed, 16 Nov 2016 11:16:33 +0200
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1 /* The copyright in this software is being made available under the BSD
2 * License, included below. This software may be subject to other third party
3 * and contributor rights, including patent rights, and no such rights are
4 * granted under this license.
5 *
6 * Copyright (c) 2010-2014, ITU/ISO/IEC
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are met:
11 *
12 * * Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
14 * * Redistributions in binary form must reproduce the above copyright notice,
15 * this list of conditions and the following disclaimer in the documentation
16 * and/or other materials provided with the distribution.
17 * * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
18 * be used to endorse or promote products derived from this software without
19 * specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
31 * THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 /**
35 * \file
36 * \brief Declaration of TComInterpolationFilter class
37 */
38
39 #ifndef __TCOMINTERPOLATIONFILTER__
40 #define __TCOMINTERPOLATIONFILTER__
41
42 #include "TypeDef.h"
43
44 //! \ingroup TLibCommon
45 //! \{
46
47 #define NTAPS_LUMA 8 ///< Number of taps for luma
48 #define NTAPS_CHROMA 4 ///< Number of taps for chroma
49 #define IF_INTERNAL_PREC 14 ///< Number of bits for internal precision
50 #define IF_FILTER_PREC 6 ///< Log2 of sum of filter taps
51 #define IF_INTERNAL_OFFS (1<<(IF_INTERNAL_PREC-1)) ///< Offset used internally
52
53 /**
54 * \brief Interpolation filter class
55 */
56 class TComInterpolationFilter
57 {
58 static const TFilterCoeff m_lumaFilter[LUMA_INTERPOLATION_FILTER_SUB_SAMPLE_POSITIONS][NTAPS_LUMA]; ///< Luma filter taps
59 static const TFilterCoeff m_chromaFilter[CHROMA_INTERPOLATION_FILTER_SUB_SAMPLE_POSITIONS][NTAPS_CHROMA]; ///< Chroma filter taps
60
61 static Void filterCopy(Int bitDepth, const Pel *src, Int srcStride, Pel *dst, Int dstStride, Int width, Int height, Bool isFirst, Bool isLast);
62
63 template<Int N, Bool isVertical, Bool isFirst, Bool isLast>
64 static Void filter(Int bitDepth, Pel const *src, Int srcStride, Pel *dst, Int dstStride, Int width, Int height, TFilterCoeff const *coeff);
65
66 template<Int N>
67 static Void filterHor(Int bitDepth, Pel *src, Int srcStride, Pel *dst, Int dstStride, Int width, Int height, Bool isLast, TFilterCoeff const *coeff);
68 template<Int N>
69 static Void filterVer(Int bitDepth, Pel *src, Int srcStride, Pel *dst, Int dstStride, Int width, Int height, Bool isFirst, Bool isLast, TFilterCoeff const *coeff);
70
71 public:
72 TComInterpolationFilter() {}
73 ~TComInterpolationFilter() {}
74
75 Void filterHor(const ComponentID compID, Pel *src, Int srcStride, Pel *dst, Int dstStride, Int width, Int height, Int frac, Bool isLast, const ChromaFormat fmt );
76 Void filterVer(const ComponentID compID, Pel *src, Int srcStride, Pel *dst, Int dstStride, Int width, Int height, Int frac, Bool isFirst, Bool isLast, const ChromaFormat fmt );
77 };
78
79 //! \}
80
81 #endif