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IntHalfbandFilterST: implemented intrinsics class
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f4exb
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995fd04543
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2504d199fd
@ -214,6 +214,7 @@ set(sdrbase_HEADERS
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sdrbase/dsp/inthalfbandfiltereo2.h
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sdrbase/dsp/inthalfbandfiltereo2i.h
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sdrbase/dsp/inthalfbandfilterst.h
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sdrbase/dsp/inthalfbandfiltersti.h
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sdrbase/dsp/kissfft.h
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sdrbase/dsp/kissengine.h
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sdrbase/dsp/lowpass.h
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@ -3,7 +3,7 @@
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// written by Edouard Griffiths //
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// //
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// Integer half-band FIR based interpolator and decimator //
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// This is the double buffer variant //
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// This is the even/odd and I/Q stride with double buffering variant //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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@ -24,6 +24,7 @@
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#include <stdint.h>
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#include "dsp/dsptypes.h"
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#include "dsp/hbfiltertraits.h"
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#include "dsp/inthalfbandfiltersti.h"
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#include "util/export.h"
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template<uint32_t HBFilterOrder>
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@ -403,7 +404,8 @@ public:
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}
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protected:
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qint32 m_samplesDB[2*HBFIRFilterTraits<HBFilterOrder>::hbOrder][2]; // double buffer technique with even/odd amnd I/Q stride
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qint32 m_samplesDB[2*HBFilterOrder][2]; // double buffer technique with even/odd amnd I/Q stride
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qint32 m_samplesAligned[HBFilterOrder][2] __attribute__ ((aligned (16)));
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int m_ptr;
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int m_size;
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int m_state;
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@ -431,9 +433,6 @@ protected:
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void doFIR(Sample* sample)
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{
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int a = m_ptr + m_size; // tip pointer - odd
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int b = m_ptr + 1; // tail pointer - aven
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// calculate on odd values
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if ((m_ptr % 2) == 1)
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@ -442,6 +441,17 @@ protected:
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m_qEvenAcc = 0;
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m_iOddAcc = 0;
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m_qOddAcc = 0;
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#ifdef USE_SSE4_1
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memcpy((void *) m_samplesAligned, (const void *) &(m_samplesDB[ m_ptr + 1][0]), HBFilterOrder*2*sizeof(qint32));
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IntHalfbandFilterSTIntrinsics<HBFilterOrder>::work(
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m_samplesAligned,
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m_iEvenAcc,
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m_qEvenAcc,
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m_iOddAcc,
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m_qOddAcc);
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#else
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int a = m_ptr + m_size; // tip pointer - odd
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int b = m_ptr + 1; // tail pointer - aven
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for (int i = 0; i < HBFIRFilterTraits<HBFilterOrder>::hbOrder / 4; i++)
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{
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@ -452,7 +462,7 @@ protected:
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a -= 2;
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b += 2;
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}
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#endif
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m_iEvenAcc += ((qint32)m_samplesDB[m_ptr + m_size/2][0]) << (HBFIRFilterTraits<HBFilterOrder>::hbShift - 1);
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m_qEvenAcc += ((qint32)m_samplesDB[m_ptr + m_size/2][1]) << (HBFIRFilterTraits<HBFilterOrder>::hbShift - 1);
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m_iOddAcc += ((qint32)m_samplesDB[m_ptr + m_size/2 + 1][0]) << (HBFIRFilterTraits<HBFilterOrder>::hbShift - 1);
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@ -470,9 +480,6 @@ protected:
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void doFIR(qint32 *x, qint32 *y)
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{
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int a = m_ptr + m_size; // tip pointer - odd
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int b = m_ptr + 1; // tail pointer - aven
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// calculate on odd values
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if ((m_ptr % 2) == 1)
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@ -482,6 +489,18 @@ protected:
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m_iOddAcc = 0;
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m_qOddAcc = 0;
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#ifdef USE_SSE4_1
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memcpy((void *) m_samplesAligned, (const void *) &(m_samplesDB[ m_ptr + 1][0]), HBFilterOrder*2*sizeof(qint32));
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IntHalfbandFilterSTIntrinsics<HBFilterOrder>::work(
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m_samplesAligned,
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m_iEvenAcc,
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m_qEvenAcc,
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m_iOddAcc,
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m_qOddAcc);
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#else
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int a = m_ptr + m_size; // tip pointer - odd
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int b = m_ptr + 1; // tail pointer - aven
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for (int i = 0; i < HBFIRFilterTraits<HBFilterOrder>::hbOrder / 4; i++)
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{
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m_iEvenAcc += (m_samplesDB[a-1][0] + m_samplesDB[b][0]) * HBFIRFilterTraits<HBFilterOrder>::hbCoeffs[i];
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@ -491,7 +510,7 @@ protected:
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a -= 2;
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b += 2;
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}
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#endif
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m_iEvenAcc += ((qint32)m_samplesDB[m_ptr + m_size/2][0]) << (HBFIRFilterTraits<HBFilterOrder>::hbShift - 1);
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m_qEvenAcc += ((qint32)m_samplesDB[m_ptr + m_size/2][1]) << (HBFIRFilterTraits<HBFilterOrder>::hbShift - 1);
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m_iOddAcc += ((qint32)m_samplesDB[m_ptr + m_size/2 + 1][0]) << (HBFIRFilterTraits<HBFilterOrder>::hbShift - 1);
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92
sdrbase/dsp/inthalfbandfiltersti.h
Normal file
92
sdrbase/dsp/inthalfbandfiltersti.h
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@ -0,0 +1,92 @@
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///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2016 F4EXB //
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// written by Edouard Griffiths //
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// //
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// Integer half-band FIR based interpolator and decimator //
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// This is the even/odd and I/Q stride with double buffering variant //
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// This is the SIMD intrinsics code //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#ifndef SDRBASE_DSP_INTHALFBANDFILTERSTI_H_
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#define SDRBASE_DSP_INTHALFBANDFILTERSTI_H_
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#include <stdint.h>
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#if defined(USE_SSE4_1)
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#include <smmintrin.h>
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#endif
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#include "hbfiltertraits.h"
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template<uint32_t HBFilterOrder>
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class IntHalfbandFilterSTIntrinsics
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{
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public:
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static void work(
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int32_t samples[HBFilterOrder][2],
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int32_t& iEvenAcc, int32_t& qEvenAcc,
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int32_t& iOddAcc, int32_t& qOddAcc)
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{
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#if defined(USE_SSE4_1)
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int a = HBFIRFilterTraits<HBFilterOrder>::hbOrder - 2; // tip
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int b = 0; // tail
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const __m128i* h = (const __m128i*) HBFIRFilterTraits<HBFilterOrder>::hbCoeffs;
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__m128i sum = _mm_setzero_si128();
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__m128i sh, shh, sa, sb;
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int32_t sums[4] __attribute__ ((aligned (16)));
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for (int i = 0; i < HBFIRFilterTraits<HBFilterOrder>::hbOrder / 16; i++)
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{
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sh = _mm_load_si128(h);
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shh = _mm_shuffle_epi32(sh, _MM_SHUFFLE(0,0,0,0));
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sa = _mm_load_si128((__m128i*) &(samples[a][0])); // Ei,Eq,Oi,Oq
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sb = _mm_load_si128((__m128i*) &(samples[b][0]));
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sum = _mm_add_epi32(sum, _mm_mullo_epi32(_mm_add_epi32(sa, sb), shh));
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a -= 2;
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b += 2;
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shh = _mm_shuffle_epi32(sh, _MM_SHUFFLE(1,1,1,1));
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sa = _mm_load_si128((__m128i*) &(samples[a][0])); // Ei,Eq,Oi,Oq
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sb = _mm_load_si128((__m128i*) &(samples[b][0]));
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sum = _mm_add_epi32(sum, _mm_mullo_epi32(_mm_add_epi32(sa, sb), shh));
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a -= 2;
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b += 2;
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shh = _mm_shuffle_epi32(sh, _MM_SHUFFLE(2,2,2,2));
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sa = _mm_load_si128((__m128i*) &(samples[a][0])); // Ei,Eq,Oi,Oq
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sb = _mm_load_si128((__m128i*) &(samples[b][0]));
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sum = _mm_add_epi32(sum, _mm_mullo_epi32(_mm_add_epi32(sa, sb), shh));
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a -= 2;
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b += 2;
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shh = _mm_shuffle_epi32(sh, _MM_SHUFFLE(3,3,3,3));
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sa = _mm_load_si128((__m128i*) &(samples[a][0])); // Ei,Eq,Oi,Oq
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sb = _mm_load_si128((__m128i*) &(samples[b][0]));
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sum = _mm_add_epi32(sum, _mm_mullo_epi32(_mm_add_epi32(sa, sb), shh));
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a -= 2;
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b += 2;
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++h;
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}
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// Extract values from sum vector
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_mm_store_si128((__m128i*) sums, sum);
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iEvenAcc = sums[0];
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qEvenAcc = sums[1];
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iOddAcc = sums[2];
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qOddAcc = sums[3];
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#endif
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}
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};
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#endif /* SDRBASE_DSP_INTHALFBANDFILTERSTI_H_ */
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@ -147,6 +147,8 @@ HEADERS += mainwindow.h\
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dsp/inthalfbandfiltereo1i.h\
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dsp/inthalfbandfiltereo2.h\
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dsp/inthalfbandfiltereo2i.h\
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dsp/inthalfbandfilterst.h\
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dsp/inthalfbandfiltersti.h\
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dsp/kissfft.h\
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dsp/kissengine.h\
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dsp/lowpass.h\
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