1
0
mirror of https://github.com/f4exb/sdrangel.git synced 2024-12-23 10:05:46 -05:00
sdrangel/sdrbase/dsp/hbfiltertraits.h

116 lines
3.9 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2016 F4EXB //
// written by Edouard Griffiths //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 of the License, or //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#ifndef SDRBASE_DSP_HBFILTERTRAITS_H_
#define SDRBASE_DSP_HBFILTERTRAITS_H_
#include <stdint.h>
#include "export.h"
// uses Q1.14 format internally, input and output are S16
/*
* supported filter orders: 96, 80, 64, 48, 32
* any usage of another value will be prevented by compilation errors
*/
template<uint32_t HBFilterOrder>
struct HBFIRFilterTraits
{
};
template<>
struct SDRBASE_API HBFIRFilterTraits<16>
{
static const int32_t hbOrder = 16;
static const int32_t hbShift = 12;
static const int16_t hbMod[16+6];
static const int32_t hbCoeffs[4] __attribute__ ((aligned (16)));
static const double hbCoeffsF[4];
};
template<>
struct SDRBASE_API HBFIRFilterTraits<32>
{
static const int32_t hbOrder = 32;
static const int32_t hbShift = 12;
static const int16_t hbMod[32+6];
static const int32_t hbCoeffs[8] __attribute__ ((aligned (32)));
static const double hbCoeffsF[8];
};
template<>
struct SDRBASE_API HBFIRFilterTraits<48>
{
static const int32_t hbOrder = 48;
static const int32_t hbShift = 12;
static const int16_t hbMod[48+6];
static const int32_t hbCoeffs[12] __attribute__ ((aligned (16)));
static const double hbCoeffsF[12];
};
template<>
struct SDRBASE_API HBFIRFilterTraits<64>
{
static const int32_t hbOrder = 64;
static const int32_t hbShift = 12;
static const int16_t hbMod[64+6];
static const int32_t hbCoeffs[16] __attribute__ ((aligned (32)));
static const float hbCoeffsF[16];
};
template<>
struct SDRBASE_API HBFIRFilterTraits<80>
{
static const int32_t hbOrder = 80;
static const int32_t hbShift = 14;
static const int16_t hbMod[80+6];
static const int32_t hbCoeffs[20] __attribute__ ((aligned (16)));
static const double hbCoeffsF[20];
};
template<>
struct SDRBASE_API HBFIRFilterTraits<96>
{
static const int32_t hbOrder = 96;
static const int32_t hbShift = 16;
static const int16_t hbMod[96+6];
static const int32_t hbCoeffs[24] __attribute__ ((aligned (32)));
static const double hbCoeffsF[24];
};
template<>
struct SDRBASE_API HBFIRFilterTraits<112>
{
static const int32_t hbOrder = 112;
static const int32_t hbShift = 18;
static const int16_t hbMod[112+6];
static const int32_t hbCoeffs[28] __attribute__ ((aligned (16)));
static const double hbCoeffsF[28];
};
template<>
struct SDRBASE_API HBFIRFilterTraits<128>
{
static const int32_t hbOrder = 128;
static const int32_t hbShift = 20;
static const int16_t hbMod[128+6];
static const int32_t hbCoeffs[32] __attribute__ ((aligned (16)));
static const double hbCoeffsF[32];
};
#endif /* SDRBASE_DSP_HBFILTERTRAITS_H_ */