///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2015 Edouard Griffiths, F4EXB //
// //
// 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 . //
///////////////////////////////////////////////////////////////////////////////////
#ifndef INCLUDE_GPL_DSP_DECIMATORS_H_
#define INCLUDE_GPL_DSP_DECIMATORS_H_
#include "dsp/dsptypes.h"
#ifdef SDR_RX_SAMPLE_24BIT
#include "dsp/inthalfbandfilterdb.h"
#else
#ifdef USE_SSE4_1
#include "dsp/inthalfbandfiltereo1.h"
#else
#include "dsp/inthalfbandfilterdb.h"
#endif
#endif
#define DECIMATORS_HB_FILTER_ORDER 64
template
struct decimation_shifts
{
static const uint pre1 = 0;
static const uint pre2 = 0;
static const uint post2 = 0;
static const uint pre4 = 0;
static const uint post4 = 0;
static const uint pre8 = 0;
static const uint post8 = 0;
static const uint pre16 = 0;
static const uint post16 = 0;
static const uint pre32 = 0;
static const uint post32 = 0;
static const uint pre64 = 0;
static const uint post64 = 0;
};
template<>
struct decimation_shifts<16, 24>
{
static const uint pre1 = 0;
static const uint pre2 = 0;
static const uint post2 = 9;
static const uint pre4 = 0;
static const uint post4 = 10;
static const uint pre8 = 0;
static const uint post8 = 11;
static const uint pre16 = 0;
static const uint post16 = 12;
static const uint pre32 = 0;
static const uint post32 = 13;
static const uint pre64 = 0;
static const uint post64 = 14;
};
template<>
struct decimation_shifts<24, 24>
{
static const uint pre1 = 0;
static const uint pre2 = 0;
static const uint post2 = 1;
static const uint pre4 = 0;
static const uint post4 = 2;
static const uint pre8 = 0;
static const uint post8 = 3;
static const uint pre16 = 0;
static const uint post16 = 4;
static const uint pre32 = 0;
static const uint post32 = 5;
static const uint pre64 = 0;
static const uint post64 = 6;
};
template<>
struct decimation_shifts<16, 16>
{
static const uint pre1 = 0;
static const uint pre2 = 0;
static const uint post2 = 1;
static const uint pre4 = 0;
static const uint post4 = 2;
static const uint pre8 = 0;
static const uint post8 = 3;
static const uint pre16 = 0;
static const uint post16 = 4;
static const uint pre32 = 0;
static const uint post32 = 5;
static const uint pre64 = 0;
static const uint post64 = 6;
};
template<>
struct decimation_shifts<24, 16>
{
static const uint pre1 = 8;
static const uint pre2 = 7;
static const uint post2 = 0;
static const uint pre4 = 6;
static const uint post4 = 0;
static const uint pre8 = 5;
static const uint post8 = 0;
static const uint pre16 = 4;
static const uint post16 = 0;
static const uint pre32 = 3;
static const uint post32 = 0;
static const uint pre64 = 2;
static const uint post64 = 0;
};
template<>
struct decimation_shifts<16, 12>
{
static const uint pre1 = 4;
static const uint pre2 = 3;
static const uint post2 = 0;
static const uint pre4 = 2;
static const uint post4 = 0;
static const uint pre8 = 1;
static const uint post8 = 0;
static const uint pre16 = 0;
static const uint post16 = 0;
static const uint pre32 = 0;
static const uint post32 = 1;
static const uint pre64 = 0;
static const uint post64 = 2;
};
template<>
struct decimation_shifts<24, 12>
{
static const uint pre1 = 12;
static const uint pre2 = 11;
static const uint post2 = 0;
static const uint pre4 = 10;
static const uint post4 = 0;
static const uint pre8 = 9;
static const uint post8 = 0;
static const uint pre16 = 8;
static const uint post16 = 0;
static const uint pre32 = 7;
static const uint post32 = 0;
static const uint pre64 = 6;
static const uint post64 = 0;
};
template<>
struct decimation_shifts<16, 8>
{
static const uint pre1 = 8;
static const uint pre2 = 7;
static const uint post2 = 0;
static const uint pre4 = 6;
static const uint post4 = 0;
static const uint pre8 = 5;
static const uint post8 = 0;
static const uint pre16 = 4;
static const uint post16 = 0;
static const uint pre32 = 3;
static const uint post32 = 0;
static const uint pre64 = 2;
static const uint post64 = 0;
};
template<>
struct decimation_shifts<24, 8>
{
static const uint pre1 = 16;
static const uint pre2 = 15;
static const uint post2 = 0;
static const uint pre4 = 14;
static const uint post4 = 0;
static const uint pre8 = 13;
static const uint post8 = 0;
static const uint pre16 = 12;
static const uint post16 = 0;
static const uint pre32 = 11;
static const uint post32 = 0;
static const uint pre64 = 10;
static const uint post64 = 0;
};
template
struct TripleByteLE
{
uint8_t b0;
uint8_t b1;
uint8_t b2;
typedef union {
struct {
int32_t i;
} __attribute__((__packed__));
struct {
uint8_t i0;
uint8_t i1;
uint8_t i2;
uint8_t i3;
} __attribute__((__packed__));
} isample;
operator T() const {
isample s;
s.i0 = 0;
s.i1 = b0;
s.i2 = b1;
s.i3 = b2;
return s.i;
}
} __attribute__((__packed__));
template<>
struct TripleByteLE
{
uint8_t b0;
uint8_t b1;
uint8_t b2;
typedef union {
struct {
qint32 i;
} __attribute__((__packed__));
struct {
uint8_t i0;
uint8_t i1;
uint8_t i2;
uint8_t i3;
} __attribute__((__packed__));
} isample;
operator qint32() const {
isample s;
s.i0 = 0;
s.i1 = b0;
s.i2 = b1;
s.i3 = b2;
return s.i >> 8;
}
} __attribute__((__packed__));
template<>
struct TripleByteLE
{
uint8_t b0;
uint8_t b1;
uint8_t b2;
typedef union {
struct {
qint64 i;
} __attribute__((__packed__));
struct {
uint32_t ia;
uint8_t i0;
uint8_t i1;
uint8_t i2;
uint8_t i3;
} __attribute__((__packed__));
} isample;
operator qint64() const {
isample s;
s.ia = 0;
s.i0 = 0;
s.i1 = b0;
s.i2 = b1;
s.i3 = b2;
return s.i >> 40;
}
} __attribute__((__packed__));
template
class Decimators
{
public:
// interleaved I/Q input buffer
void decimate1(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate2_u(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate2_inf(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate2_sup(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate2_cen(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate4_inf(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate4_sup(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate4_cen(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate8_inf(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate8_sup(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate8_cen(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate16_inf(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate16_sup(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate16_cen(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate32_inf(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate32_sup(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate32_cen(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate64_inf(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate64_sup(SampleVector::iterator* it, const T* buf, qint32 len);
void decimate64_cen(SampleVector::iterator* it, const T* buf, qint32 len);
// separate I and Q input buffers
void decimate1(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate2_u(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate2_inf(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate2_sup(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate2_cen(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate4_inf(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate4_sup(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate4_cen(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate8_inf(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate8_sup(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate8_cen(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate16_inf(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate16_sup(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate16_cen(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate32_inf(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate32_sup(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate32_cen(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate64_inf(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate64_sup(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
void decimate64_cen(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len);
private:
#ifdef SDR_RX_SAMPLE_24BIT
IntHalfbandFilterDB m_decimator2; // 1st stages
IntHalfbandFilterDB m_decimator4; // 2nd stages
IntHalfbandFilterDB m_decimator8; // 3rd stages
IntHalfbandFilterDB m_decimator16; // 4th stages
IntHalfbandFilterDB m_decimator32; // 5th stages
IntHalfbandFilterDB m_decimator64; // 6th stages
#else
#ifdef USE_SSE4_1
IntHalfbandFilterEO1 m_decimator2; // 1st stages
IntHalfbandFilterEO1 m_decimator4; // 2nd stages
IntHalfbandFilterEO1 m_decimator8; // 3rd stages
IntHalfbandFilterEO1 m_decimator16; // 4th stages
IntHalfbandFilterEO1 m_decimator32; // 5th stages
IntHalfbandFilterEO1 m_decimator64; // 6th stages
#else
IntHalfbandFilterDB m_decimator2; // 1st stages
IntHalfbandFilterDB m_decimator4; // 2nd stages
IntHalfbandFilterDB m_decimator8; // 3rd stages
IntHalfbandFilterDB m_decimator16; // 4th stages
IntHalfbandFilterDB m_decimator32; // 5th stages
IntHalfbandFilterDB m_decimator64; // 6th stages
#endif
#endif
};
template
void Decimators::decimate1(SampleVector::iterator* it, const T* buf, qint32 len)
{
qint32 xreal, yimag;
for (int pos = 0; pos < len - 1; pos += 2)
{
xreal = buf[pos+0];
yimag = buf[pos+1];
(**it).setReal(xreal << decimation_shifts::pre1); // Valgrind optim (2 - comment not repeated)
(**it).setImag(yimag << decimation_shifts::pre1);
++(*it); // Valgrind optim (comment not repeated)
}
}
template
void Decimators::decimate1(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len)
{
qint32 xreal, yimag;
for (int pos = 0; pos < len; pos += 1)
{
xreal = bufI[pos];
yimag = bufQ[pos];
(**it).setReal(xreal << decimation_shifts::pre1); // Valgrind optim (2 - comment not repeated)
(**it).setImag(yimag << decimation_shifts::pre1);
++(*it); // Valgrind optim (comment not repeated)
}
}
template
void Decimators::decimate2_u(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal, yimag;
for (int pos = 0; pos < len - 7; pos += 8)
{
xreal = (buf[pos+0] - buf[pos+3]) << decimation_shifts::pre2;
yimag = (buf[pos+1] + buf[pos+2] - 255) << decimation_shifts::pre2;
(**it).setReal(xreal >> decimation_shifts::post2);
(**it).setImag(yimag >> decimation_shifts::post2);
++(*it);
xreal = (buf[pos+7] - buf[pos+4]) << decimation_shifts::pre2;
yimag = (255 - buf[pos+5] - buf[pos+6]) << decimation_shifts::pre2;
(**it).setReal(xreal >> decimation_shifts::post2);
(**it).setImag(yimag >> decimation_shifts::post2);
++(*it);
}
}
template
void Decimators::decimate2_u(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len)
{
AccuType xreal, yimag;
for (int pos = 0; pos < len - 3; pos += 4)
{
// 0: I[0] 1: Q[0] 2: I[1] 3: Q[1]
xreal = (bufI[pos] - bufQ[pos+1]) << decimation_shifts::pre2;
yimag = (bufQ[pos] + bufI[pos+1] - 255) << decimation_shifts::pre2;
(**it).setReal(xreal >> decimation_shifts::post2);
(**it).setImag(yimag >> decimation_shifts::post2);
++(*it);
// 4: I[2] 5: Q[2] 6: I[3] 7: Q[3]
xreal = (bufQ[pos+3] - bufI[pos+2]) << decimation_shifts::pre2;
yimag = (255 - bufQ[pos+2] - bufI[pos+3]) << decimation_shifts::pre2;
(**it).setReal(xreal >> decimation_shifts::post2);
(**it).setImag(yimag >> decimation_shifts::post2);
++(*it);
}
}
template
void Decimators::decimate2_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal, yimag;
for (int pos = 0; pos < len - 7; pos += 8)
{
xreal = (buf[pos+0] - buf[pos+3]) << decimation_shifts::pre2;
yimag = (buf[pos+1] + buf[pos+2]) << decimation_shifts::pre2;
(**it).setReal(xreal >> decimation_shifts::post2);
(**it).setImag(yimag >> decimation_shifts::post2);
++(*it);
xreal = (buf[pos+7] - buf[pos+4]) << decimation_shifts::pre2;
yimag = (- buf[pos+5] - buf[pos+6]) << decimation_shifts::pre2;
(**it).setReal(xreal >> decimation_shifts::post2);
(**it).setImag(yimag >> decimation_shifts::post2);
++(*it);
}
}
template
void Decimators::decimate2_inf(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len)
{
AccuType xreal, yimag;
for (int pos = 0; pos < len - 3; pos += 4)
{
// 0: I[0] 1: Q[0] 2: I[1] 3: Q[1]
xreal = (bufI[pos] - bufQ[pos+1]) << decimation_shifts::pre2;
yimag = (bufQ[pos] + bufI[pos+1]) << decimation_shifts::pre2;
(**it).setReal(xreal >> decimation_shifts::post2);
(**it).setImag(yimag >> decimation_shifts::post2);
++(*it);
// 4: I[2] 5: Q[2] 6: I[3] 7: Q[3]
xreal = (bufQ[pos+3] - bufI[pos+2]) << decimation_shifts::pre2;
yimag = (- bufQ[pos+2] - bufI[pos+3]) << decimation_shifts::pre2;
(**it).setReal(xreal >> decimation_shifts::post2);
(**it).setImag(yimag >> decimation_shifts::post2);
++(*it);
}
}
template
void Decimators::decimate2_sup(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal, yimag;
for (int pos = 0; pos < len - 7; pos += 8)
{
xreal = (buf[pos+1] - buf[pos+2]) << decimation_shifts::pre2;
yimag = (- buf[pos+0] - buf[pos+3]) << decimation_shifts::pre2;
(**it).setReal(xreal >> decimation_shifts::post2);
(**it).setImag(yimag >> decimation_shifts::post2);
++(*it);
xreal = (buf[pos+6] - buf[pos+5]) << decimation_shifts::pre2;
yimag = (buf[pos+4] + buf[pos+7]) << decimation_shifts::pre2;
(**it).setReal(xreal >> decimation_shifts::post2);
(**it).setImag(yimag >> decimation_shifts::post2);
++(*it);
}
}
template
void Decimators::decimate2_sup(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len)
{
AccuType xreal, yimag;
for (int pos = 0; pos < len - 3; pos += 4)
{
// 0: I[0] 1: Q[0] 2: I[1] 3: Q[1]
xreal = (bufQ[pos] - bufI[pos+1]) << decimation_shifts::pre2;
yimag = (- bufI[pos] - bufQ[pos+1]) << decimation_shifts::pre2;
(**it).setReal(xreal >> decimation_shifts::post2);
(**it).setImag(yimag >> decimation_shifts::post2);
++(*it);
// 4: I[2] 5: Q[2] 6: I[3] 7: Q[3]
xreal = (bufI[pos+3] - bufQ[pos+2]) << decimation_shifts::pre2;
yimag = (bufI[pos+2] + bufQ[pos+3]) << decimation_shifts::pre2;
(**it).setReal(xreal >> decimation_shifts::post2);
(**it).setImag(yimag >> decimation_shifts::post2);
++(*it);
}
}
template
void Decimators::decimate4_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal, yimag;
for (int pos = 0; pos < len - 7; pos += 8)
{
xreal = (buf[pos+0] - buf[pos+3] + buf[pos+7] - buf[pos+4]) << decimation_shifts::pre4;
yimag = (buf[pos+1] - buf[pos+5] + buf[pos+2] - buf[pos+6]) << decimation_shifts::pre4;
(**it).setReal(xreal >> decimation_shifts::post4);
(**it).setImag(yimag >> decimation_shifts::post4);
++(*it);
}
}
template
void Decimators::decimate4_inf(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len)
{
AccuType xreal, yimag;
for (int pos = 0; pos < len - 3; pos += 4)
{
xreal = (bufI[pos] - bufQ[pos+1] + bufQ[pos+3] - bufI[pos+2]) << decimation_shifts::pre4;
yimag = (bufQ[pos] - bufQ[pos+2] + bufI[pos+1] - bufI[pos+3]) << decimation_shifts::pre4;
(**it).setReal(xreal >> decimation_shifts::post4);
(**it).setImag(yimag >> decimation_shifts::post4);
++(*it);
}
}
template
void Decimators::decimate4_sup(SampleVector::iterator* it, const T* buf, qint32 len)
{
// Sup (USB):
// x y x y x y x y / x -> 1,-2,-5,6 / y -> -0,-3,4,7
// [ rotate: 1, 0, -2, 3, -5, -4, 6, -7]
// Inf (LSB):
// x y x y x y x y / x -> 0,-3,-4,7 / y -> 1,2,-5,-6
// [ rotate: 0, 1, -3, 2, -4, -5, 7, -6]
AccuType xreal, yimag;
for (int pos = 0; pos < len - 7; pos += 8)
{
xreal = (buf[pos+1] - buf[pos+2] - buf[pos+5] + buf[pos+6]) << decimation_shifts::pre4;
yimag = (- buf[pos+0] - buf[pos+3] + buf[pos+4] + buf[pos+7]) << decimation_shifts::pre4;
(**it).setReal(xreal >> decimation_shifts::post4);
(**it).setImag(yimag >> decimation_shifts::post4);
++(*it);
}
}
template
void Decimators::decimate4_sup(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len)
{
AccuType xreal, yimag;
for (int pos = 0; pos < len - 3; pos += 4)
{
xreal = (bufQ[pos] - bufI[pos+1] - bufQ[pos+2] + bufI[pos+3]) << decimation_shifts::pre4;
yimag = (- bufI[pos] - bufQ[pos+1] + bufI[pos+2] + bufQ[pos+3]) << decimation_shifts::pre4;
(**it).setReal(xreal >> decimation_shifts::post4);
(**it).setImag(yimag >> decimation_shifts::post4);
++(*it);
}
}
template
void Decimators::decimate8_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal[2], yimag[2];
for (int pos = 0; pos < len - 15; pos += 8)
{
xreal[0] = (buf[pos+0] - buf[pos+3] + buf[pos+7] - buf[pos+4]) << decimation_shifts::pre8;
yimag[0] = (buf[pos+1] - buf[pos+5] + buf[pos+2] - buf[pos+6]) << decimation_shifts::pre8;
pos += 8;
xreal[1] = (buf[pos+0] - buf[pos+3] + buf[pos+7] - buf[pos+4]) << decimation_shifts::pre8;
yimag[1] = (buf[pos+1] - buf[pos+5] + buf[pos+2] - buf[pos+6]) << decimation_shifts::pre8;
m_decimator2.myDecimate(xreal[0], yimag[0], &xreal[1], &yimag[1]);
(**it).setReal(xreal[1] >> decimation_shifts::post8);
(**it).setImag(yimag[1] >> decimation_shifts::post8);
++(*it);
}
}
template
void Decimators::decimate8_inf(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len)
{
AccuType xreal[2], yimag[2];
for (int pos = 0; pos < len - 7; pos += 4)
{
xreal[0] = (bufI[pos] - bufQ[pos+1] + bufQ[pos+3] - bufI[pos+2]) << decimation_shifts::pre8;
yimag[0] = (bufQ[pos] - bufQ[pos+2] + bufI[pos+1] - bufI[pos+3]) << decimation_shifts::pre8;
pos += 4;
xreal[1] = (bufI[pos] - bufQ[pos+1] + bufQ[pos+3] - bufI[pos+2]) << decimation_shifts::pre8;
yimag[1] = (bufQ[pos] - bufQ[pos+2] + bufI[pos+1] - bufQ[pos+3]) << decimation_shifts::pre8;
m_decimator2.myDecimate(xreal[0], yimag[0], &xreal[1], &yimag[1]);
(**it).setReal(xreal[1] >> decimation_shifts::post8);
(**it).setImag(yimag[1] >> decimation_shifts::post8);
++(*it);
}
}
template
void Decimators::decimate8_sup(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal[2], yimag[2];
for (int pos = 0; pos < len - 15; pos += 8)
{
xreal[0] = (buf[pos+1] - buf[pos+2] - buf[pos+5] + buf[pos+6]) << decimation_shifts::pre8;
yimag[0] = (- buf[pos+0] - buf[pos+3] + buf[pos+4] + buf[pos+7]) << decimation_shifts::pre8;
pos += 8;
xreal[1] = (buf[pos+1] - buf[pos+2] - buf[pos+5] + buf[pos+6]) << decimation_shifts::pre8;
yimag[1] = (- buf[pos+0] - buf[pos+3] + buf[pos+4] + buf[pos+7]) << decimation_shifts::pre8;
m_decimator2.myDecimate(xreal[0], yimag[0], &xreal[1], &yimag[1]);
(**it).setReal(xreal[1] >> decimation_shifts::post8);
(**it).setImag(yimag[1] >> decimation_shifts::post8);
++(*it);
}
}
template
void Decimators::decimate8_sup(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len)
{
AccuType xreal[2], yimag[2];
for (int pos = 0; pos < len - 7; pos += 4)
{
xreal[0] = (bufQ[pos] - bufI[pos+1] - bufQ[pos+2] + bufI[pos+3]) << decimation_shifts::pre8;
yimag[0] = (- bufI[pos] - bufQ[pos+1] + bufI[pos+2] + bufQ[pos+3]) << decimation_shifts::pre8;
pos += 4;
xreal[1] = (bufQ[pos] - bufI[pos+1] - bufQ[pos+2] + bufI[pos+3]) << decimation_shifts::pre8;
yimag[1] = (- bufI[pos] - bufQ[pos+1] + bufI[pos+2] + bufQ[pos+3]) << decimation_shifts::pre8;
m_decimator2.myDecimate(xreal[0], yimag[0], &xreal[1], &yimag[1]);
(**it).setReal(xreal[1] >> decimation_shifts::post8);
(**it).setImag(yimag[1] >> decimation_shifts::post8);
++(*it);
}
}
template
void Decimators::decimate16_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
// Offset tuning: 4x downsample and rotate, then
// downsample 4x more. [ rotate: 0, 1, -3, 2, -4, -5, 7, -6]
AccuType xreal[4], yimag[4];
for (int pos = 0; pos < len - 31; )
{
for (int i = 0; i < 4; i++)
{
xreal[i] = (buf[pos+0] - buf[pos+3] + buf[pos+7] - buf[pos+4]) << decimation_shifts::pre16;
yimag[i] = (buf[pos+1] - buf[pos+5] + buf[pos+2] - buf[pos+6]) << decimation_shifts::pre16;
pos += 8;
}
m_decimator2.myDecimate(xreal[0], yimag[0], &xreal[1], &yimag[1]);
m_decimator2.myDecimate(xreal[2], yimag[2], &xreal[3], &yimag[3]);
m_decimator4.myDecimate(xreal[1], yimag[1], &xreal[3], &yimag[3]);
(**it).setReal(xreal[3] >> decimation_shifts::post16);
(**it).setImag(yimag[3] >> decimation_shifts::post16);
++(*it);
}
}
template
void Decimators::decimate16_inf(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len)
{
// Offset tuning: 4x downsample and rotate, then
// downsample 4x more. [ rotate: 0, 1, -3, 2, -4, -5, 7, -6]
AccuType xreal[4], yimag[4];
for (int pos = 0; pos < len - 15; )
{
for (int i = 0; i < 4; i++)
{
xreal[i] = (bufI[pos] - bufI[pos+1] + bufQ[pos+3] - bufI[pos+2]) << decimation_shifts::pre16;
yimag[i] = (bufQ[pos] - bufQ[pos+2] + bufI[pos+1] - bufI[pos+3]) << decimation_shifts::pre16;
pos += 4;
}
m_decimator2.myDecimate(xreal[0], yimag[0], &xreal[1], &yimag[1]);
m_decimator2.myDecimate(xreal[2], yimag[2], &xreal[3], &yimag[3]);
m_decimator4.myDecimate(xreal[1], yimag[1], &xreal[3], &yimag[3]);
(**it).setReal(xreal[3] >> decimation_shifts::post16);
(**it).setImag(yimag[3] >> decimation_shifts::post16);
++(*it);
}
}
template
void Decimators::decimate16_sup(SampleVector::iterator* it, const T* buf, qint32 len)
{
// Offset tuning: 4x downsample and rotate, then
// downsample 4x more. [ rotate: 1, 0, -2, 3, -5, -4, 6, -7]
AccuType xreal[4], yimag[4];
for (int pos = 0; pos < len - 31; )
{
for (int i = 0; i < 4; i++)
{
xreal[i] = (buf[pos+1] - buf[pos+2] - buf[pos+5] + buf[pos+6]) << decimation_shifts::pre16;
yimag[i] = (buf[pos+4] + buf[pos+7] - buf[pos+0] - buf[pos+3]) << decimation_shifts::pre16;
pos += 8;
}
m_decimator2.myDecimate(xreal[0], yimag[0], &xreal[1], &yimag[1]);
m_decimator2.myDecimate(xreal[2], yimag[2], &xreal[3], &yimag[3]);
m_decimator4.myDecimate(xreal[1], yimag[1], &xreal[3], &yimag[3]);
(**it).setReal(xreal[3] >> decimation_shifts::post16);
(**it).setImag(yimag[3] >> decimation_shifts::post16);
++(*it);
}
}
template
void Decimators::decimate16_sup(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len)
{
// Offset tuning: 4x downsample and rotate, then
// downsample 4x more. [ rotate: 1, 0, -2, 3, -5, -4, 6, -7]
AccuType xreal[4], yimag[4];
for (int pos = 0; pos < len - 15; )
{
for (int i = 0; i < 4; i++)
{
xreal[i] = (bufQ[pos+0] - bufI[pos+1] - bufQ[pos+2] + bufI[pos+3]) << decimation_shifts::pre16;
yimag[i] = (bufI[pos+2] + bufQ[pos+3] - bufI[pos+0] - bufQ[pos+1]) << decimation_shifts::pre16;
pos += 4;
}
m_decimator2.myDecimate(xreal[0], yimag[0], &xreal[1], &yimag[1]);
m_decimator2.myDecimate(xreal[2], yimag[2], &xreal[3], &yimag[3]);
m_decimator4.myDecimate(xreal[1], yimag[1], &xreal[3], &yimag[3]);
(**it).setReal(xreal[3] >> decimation_shifts::post16);
(**it).setImag(yimag[3] >> decimation_shifts::post16);
++(*it);
}
}
template
void Decimators::decimate32_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal[8], yimag[8];
for (int pos = 0; pos < len - 63; )
{
for (int i = 0; i < 8; i++)
{
xreal[i] = (buf[pos+0] - buf[pos+3] + buf[pos+7] - buf[pos+4]) << decimation_shifts::pre32;
yimag[i] = (buf[pos+1] - buf[pos+5] + buf[pos+2] - buf[pos+6]) << decimation_shifts::pre32;
pos += 8;
}
m_decimator2.myDecimate(xreal[0], yimag[0], &xreal[1], &yimag[1]);
m_decimator2.myDecimate(xreal[2], yimag[2], &xreal[3], &yimag[3]);
m_decimator2.myDecimate(xreal[4], yimag[4], &xreal[5], &yimag[5]);
m_decimator2.myDecimate(xreal[6], yimag[6], &xreal[7], &yimag[7]);
m_decimator4.myDecimate(xreal[1], yimag[1], &xreal[3], &yimag[3]);
m_decimator4.myDecimate(xreal[5], yimag[5], &xreal[7], &yimag[7]);
m_decimator8.myDecimate(xreal[3], yimag[3], &xreal[7], &yimag[7]);
(**it).setReal(xreal[7] >> decimation_shifts::post32);
(**it).setImag(yimag[7] >> decimation_shifts::post32);
++(*it);
}
}
template
void Decimators::decimate32_inf(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len)
{
AccuType xreal[8], yimag[8];
for (int pos = 0; pos < len - 31; )
{
for (int i = 0; i < 8; i++)
{
xreal[i] = (bufI[pos+0] - bufQ[pos+1] + bufQ[pos+3] - bufI[pos+2]) << decimation_shifts::pre32;
yimag[i] = (bufQ[pos+0] - bufQ[pos+2] + bufI[pos+1] - bufI[pos+3]) << decimation_shifts::pre32;
pos += 4;
}
m_decimator2.myDecimate(xreal[0], yimag[0], &xreal[1], &yimag[1]);
m_decimator2.myDecimate(xreal[2], yimag[2], &xreal[3], &yimag[3]);
m_decimator2.myDecimate(xreal[4], yimag[4], &xreal[5], &yimag[5]);
m_decimator2.myDecimate(xreal[6], yimag[6], &xreal[7], &yimag[7]);
m_decimator4.myDecimate(xreal[1], yimag[1], &xreal[3], &yimag[3]);
m_decimator4.myDecimate(xreal[5], yimag[5], &xreal[7], &yimag[7]);
m_decimator8.myDecimate(xreal[3], yimag[3], &xreal[7], &yimag[7]);
(**it).setReal(xreal[7] >> decimation_shifts::post32);
(**it).setImag(yimag[7] >> decimation_shifts::post32);
++(*it);
}
}
template
void Decimators::decimate32_sup(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal[8], yimag[8];
for (int pos = 0; pos < len - 63; )
{
for (int i = 0; i < 8; i++)
{
xreal[i] = (buf[pos+1] - buf[pos+2] - buf[pos+5] + buf[pos+6]) << decimation_shifts::pre32;
yimag[i] = (buf[pos+4] + buf[pos+7] - buf[pos+0] - buf[pos+3]) << decimation_shifts::pre32;
pos += 8;
}
m_decimator2.myDecimate(xreal[0], yimag[0], &xreal[1], &yimag[1]);
m_decimator2.myDecimate(xreal[2], yimag[2], &xreal[3], &yimag[3]);
m_decimator2.myDecimate(xreal[4], yimag[4], &xreal[5], &yimag[5]);
m_decimator2.myDecimate(xreal[6], yimag[6], &xreal[7], &yimag[7]);
m_decimator4.myDecimate(xreal[1], yimag[1], &xreal[3], &yimag[3]);
m_decimator4.myDecimate(xreal[5], yimag[5], &xreal[7], &yimag[7]);
m_decimator8.myDecimate(xreal[3], yimag[3], &xreal[7], &yimag[7]);
(**it).setReal(xreal[7] >> decimation_shifts::post32);
(**it).setImag(yimag[7] >> decimation_shifts::post32);
++(*it);
}
}
template
void Decimators::decimate32_sup(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len)
{
AccuType xreal[8], yimag[8];
for (int pos = 0; pos < len - 31; )
{
for (int i = 0; i < 8; i++)
{
xreal[i] = (bufQ[pos+0] - bufI[pos+1] - bufQ[pos+2] + bufI[pos+3]) << decimation_shifts::pre32;
yimag[i] = (bufI[pos+2] + bufQ[pos+3] - bufI[pos+0] - bufQ[pos+1]) << decimation_shifts::pre32;
pos += 4;
}
m_decimator2.myDecimate(xreal[0], yimag[0], &xreal[1], &yimag[1]);
m_decimator2.myDecimate(xreal[2], yimag[2], &xreal[3], &yimag[3]);
m_decimator2.myDecimate(xreal[4], yimag[4], &xreal[5], &yimag[5]);
m_decimator2.myDecimate(xreal[6], yimag[6], &xreal[7], &yimag[7]);
m_decimator4.myDecimate(xreal[1], yimag[1], &xreal[3], &yimag[3]);
m_decimator4.myDecimate(xreal[5], yimag[5], &xreal[7], &yimag[7]);
m_decimator8.myDecimate(xreal[3], yimag[3], &xreal[7], &yimag[7]);
(**it).setReal(xreal[7] >> decimation_shifts::post32);
(**it).setImag(yimag[7] >> decimation_shifts::post32);
++(*it);
}
}
template
void Decimators::decimate64_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal[16], yimag[16];
for (int pos = 0; pos < len - 127; )
{
for (int i = 0; i < 16; i++)
{
xreal[i] = (buf[pos+0] - buf[pos+3] + buf[pos+7] - buf[pos+4]) << decimation_shifts::pre64;
yimag[i] = (buf[pos+1] - buf[pos+5] + buf[pos+2] - buf[pos+6]) << decimation_shifts::pre64;
pos += 8;
}
m_decimator2.myDecimate(xreal[0], yimag[0], &xreal[1], &yimag[1]);
m_decimator2.myDecimate(xreal[2], yimag[2], &xreal[3], &yimag[3]);
m_decimator2.myDecimate(xreal[4], yimag[4], &xreal[5], &yimag[5]);
m_decimator2.myDecimate(xreal[6], yimag[6], &xreal[7], &yimag[7]);
m_decimator2.myDecimate(xreal[8], yimag[8], &xreal[9], &yimag[9]);
m_decimator2.myDecimate(xreal[10], yimag[10], &xreal[11], &yimag[11]);
m_decimator2.myDecimate(xreal[12], yimag[12], &xreal[13], &yimag[13]);
m_decimator2.myDecimate(xreal[14], yimag[14], &xreal[15], &yimag[15]);
m_decimator4.myDecimate(xreal[1], yimag[1], &xreal[3], &yimag[3]);
m_decimator4.myDecimate(xreal[5], yimag[5], &xreal[7], &yimag[7]);
m_decimator4.myDecimate(xreal[9], yimag[9], &xreal[11], &yimag[11]);
m_decimator4.myDecimate(xreal[13], yimag[13], &xreal[15], &yimag[15]);
m_decimator8.myDecimate(xreal[3], yimag[3], &xreal[7], &yimag[7]);
m_decimator8.myDecimate(xreal[11], yimag[11], &xreal[15], &yimag[15]);
m_decimator16.myDecimate(xreal[7], yimag[7], &xreal[15], &yimag[15]);
(**it).setReal(xreal[15] >> decimation_shifts::post64);
(**it).setImag(yimag[15] >> decimation_shifts::post64);
++(*it);
}
}
template
void Decimators::decimate64_inf(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len)
{
AccuType xreal[16], yimag[16];
for (int pos = 0; pos < len - 63; )
{
for (int i = 0; i < 16; i++)
{
xreal[i] = (bufI[pos+0] - bufQ[pos+1] + bufQ[pos+3] - bufI[pos+2]) << decimation_shifts::pre64;
yimag[i] = (bufQ[pos+0] - bufQ[pos+2] + bufI[pos+1] - bufI[pos+3]) << decimation_shifts::pre64;
pos += 4;
}
m_decimator2.myDecimate(xreal[0], yimag[0], &xreal[1], &yimag[1]);
m_decimator2.myDecimate(xreal[2], yimag[2], &xreal[3], &yimag[3]);
m_decimator2.myDecimate(xreal[4], yimag[4], &xreal[5], &yimag[5]);
m_decimator2.myDecimate(xreal[6], yimag[6], &xreal[7], &yimag[7]);
m_decimator2.myDecimate(xreal[8], yimag[8], &xreal[9], &yimag[9]);
m_decimator2.myDecimate(xreal[10], yimag[10], &xreal[11], &yimag[11]);
m_decimator2.myDecimate(xreal[12], yimag[12], &xreal[13], &yimag[13]);
m_decimator2.myDecimate(xreal[14], yimag[14], &xreal[15], &yimag[15]);
m_decimator4.myDecimate(xreal[1], yimag[1], &xreal[3], &yimag[3]);
m_decimator4.myDecimate(xreal[5], yimag[5], &xreal[7], &yimag[7]);
m_decimator4.myDecimate(xreal[9], yimag[9], &xreal[11], &yimag[11]);
m_decimator4.myDecimate(xreal[13], yimag[13], &xreal[15], &yimag[15]);
m_decimator8.myDecimate(xreal[3], yimag[3], &xreal[7], &yimag[7]);
m_decimator8.myDecimate(xreal[11], yimag[11], &xreal[15], &yimag[15]);
m_decimator16.myDecimate(xreal[7], yimag[7], &xreal[15], &yimag[15]);
(**it).setReal(xreal[15] >> decimation_shifts::post64);
(**it).setImag(yimag[15] >> decimation_shifts::post64);
++(*it);
}
}
template
void Decimators::decimate64_sup(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal[16], yimag[16];
for (int pos = 0; pos < len - 127; )
{
for (int i = 0; i < 16; i++)
{
xreal[i] = (buf[pos+1] - buf[pos+2] - buf[pos+5] + buf[pos+6]) << decimation_shifts::pre32;
yimag[i] = (buf[pos+4] + buf[pos+7] - buf[pos+0] - buf[pos+3]) << decimation_shifts::pre32;
pos += 8;
}
m_decimator2.myDecimate(xreal[0], yimag[0], &xreal[1], &yimag[1]);
m_decimator2.myDecimate(xreal[2], yimag[2], &xreal[3], &yimag[3]);
m_decimator2.myDecimate(xreal[4], yimag[4], &xreal[5], &yimag[5]);
m_decimator2.myDecimate(xreal[6], yimag[6], &xreal[7], &yimag[7]);
m_decimator2.myDecimate(xreal[8], yimag[8], &xreal[9], &yimag[9]);
m_decimator2.myDecimate(xreal[10], yimag[10], &xreal[11], &yimag[11]);
m_decimator2.myDecimate(xreal[12], yimag[12], &xreal[13], &yimag[13]);
m_decimator2.myDecimate(xreal[14], yimag[14], &xreal[15], &yimag[15]);
m_decimator4.myDecimate(xreal[1], yimag[1], &xreal[3], &yimag[3]);
m_decimator4.myDecimate(xreal[5], yimag[5], &xreal[7], &yimag[7]);
m_decimator4.myDecimate(xreal[9], yimag[9], &xreal[11], &yimag[11]);
m_decimator4.myDecimate(xreal[13], yimag[13], &xreal[15], &yimag[15]);
m_decimator8.myDecimate(xreal[3], yimag[3], &xreal[7], &yimag[7]);
m_decimator8.myDecimate(xreal[11], yimag[11], &xreal[15], &yimag[15]);
m_decimator16.myDecimate(xreal[7], yimag[7], &xreal[15], &yimag[15]);
(**it).setReal(xreal[15] >> decimation_shifts::post64);
(**it).setImag(yimag[15] >> decimation_shifts::post64);
++(*it);
}
}
template
void Decimators::decimate64_sup(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len)
{
AccuType xreal[16], yimag[16];
for (int pos = 0; pos < len - 63; )
{
for (int i = 0; i < 16; i++)
{
xreal[i] = (bufQ[pos+0] - bufI[pos+1] - bufQ[pos+2] + bufI[pos+3]) << decimation_shifts::pre32;
yimag[i] = (bufI[pos+2] + bufQ[pos+3] - bufI[pos+0] - bufQ[pos+1]) << decimation_shifts::pre32;
pos += 4;
}
m_decimator2.myDecimate(xreal[0], yimag[0], &xreal[1], &yimag[1]);
m_decimator2.myDecimate(xreal[2], yimag[2], &xreal[3], &yimag[3]);
m_decimator2.myDecimate(xreal[4], yimag[4], &xreal[5], &yimag[5]);
m_decimator2.myDecimate(xreal[6], yimag[6], &xreal[7], &yimag[7]);
m_decimator2.myDecimate(xreal[8], yimag[8], &xreal[9], &yimag[9]);
m_decimator2.myDecimate(xreal[10], yimag[10], &xreal[11], &yimag[11]);
m_decimator2.myDecimate(xreal[12], yimag[12], &xreal[13], &yimag[13]);
m_decimator2.myDecimate(xreal[14], yimag[14], &xreal[15], &yimag[15]);
m_decimator4.myDecimate(xreal[1], yimag[1], &xreal[3], &yimag[3]);
m_decimator4.myDecimate(xreal[5], yimag[5], &xreal[7], &yimag[7]);
m_decimator4.myDecimate(xreal[9], yimag[9], &xreal[11], &yimag[11]);
m_decimator4.myDecimate(xreal[13], yimag[13], &xreal[15], &yimag[15]);
m_decimator8.myDecimate(xreal[3], yimag[3], &xreal[7], &yimag[7]);
m_decimator8.myDecimate(xreal[11], yimag[11], &xreal[15], &yimag[15]);
m_decimator16.myDecimate(xreal[7], yimag[7], &xreal[15], &yimag[15]);
(**it).setReal(xreal[15] >> decimation_shifts::post64);
(**it).setImag(yimag[15] >> decimation_shifts::post64);
++(*it);
}
}
template
void Decimators::decimate2_cen(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType intbuf[2];
for (int pos = 0; pos < len - 3; pos += 4)
{
intbuf[0] = buf[pos+2] << decimation_shifts::pre2;
intbuf[1] = buf[pos+3] << decimation_shifts::pre2;
m_decimator2.myDecimate(
buf[pos+0] << decimation_shifts::pre2,
buf[pos+1] << decimation_shifts::pre2,
&intbuf[0],
&intbuf[1]);
(**it).setReal(intbuf[0] >> decimation_shifts::post2);
(**it).setImag(intbuf[1] >> decimation_shifts::post2);
++(*it);
}
}
template
void Decimators::decimate2_cen(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len)
{
AccuType intbuf[2];
for (int pos = 0; pos < len - 1; pos += 2)
{
intbuf[0] = bufI[pos+1] << decimation_shifts::pre2;
intbuf[1] = bufQ[pos+1] << decimation_shifts::pre2;
m_decimator2.myDecimate(
bufI[pos+0] << decimation_shifts::pre2,
bufQ[pos+0] << decimation_shifts::pre2,
&intbuf[0],
&intbuf[1]);
(**it).setReal(intbuf[0] >> decimation_shifts::post2);
(**it).setImag(intbuf[1] >> decimation_shifts::post2);
++(*it);
}
}
template
void Decimators::decimate4_cen(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType intbuf[4];
for (int pos = 0; pos < len - 7; pos += 8)
{
intbuf[0] = buf[pos+2] << decimation_shifts::pre4;
intbuf[1] = buf[pos+3] << decimation_shifts::pre4;
intbuf[2] = buf[pos+6] << decimation_shifts::pre4;
intbuf[3] = buf[pos+7] << decimation_shifts::pre4;
m_decimator2.myDecimate(
buf[pos+0] << decimation_shifts::pre4,
buf[pos+1] << decimation_shifts::pre4,
&intbuf[0],
&intbuf[1]);
m_decimator2.myDecimate(
buf[pos+4] << decimation_shifts::pre4,
buf[pos+5] << decimation_shifts::pre4,
&intbuf[2],
&intbuf[3]);
m_decimator4.myDecimate(
intbuf[0],
intbuf[1],
&intbuf[2],
&intbuf[3]);
(**it).setReal(intbuf[2] >> decimation_shifts::post4);
(**it).setImag(intbuf[3] >> decimation_shifts::post4);
++(*it);
}
}
template
void Decimators::decimate4_cen(SampleVector::iterator* it, const T* bufI, const T* bufQ, qint32 len)
{
AccuType intbuf[4];
for (int pos = 0; pos < len - 3; pos += 4)
{
intbuf[0] = bufI[pos+1] << decimation_shifts::pre4;
intbuf[1] = bufQ[pos+1] << decimation_shifts::pre4;
intbuf[2] = bufI[pos+3] << decimation_shifts::pre4;
intbuf[3] = bufQ[pos+3] << decimation_shifts::pre4;
m_decimator2.myDecimate(
bufI[pos+0] << decimation_shifts::pre4,
bufQ[pos+0] << decimation_shifts