///////////////////////////////////////////////////////////////////////////////////
// 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"
#include "dsp/inthalfbandfiltereo.h"
#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;
};
#ifdef _MSC_VER
#pragma pack(push,1)
template
struct TripleByteLE
{
uint8_t b0;
uint8_t b1;
uint8_t b2;
typedef union {
#pragma pack(push,1)
struct {
int32_t i;
};
#pragma pack(pop)
#pragma pack(push, 1)
struct {
uint8_t i0;
uint8_t i1;
uint8_t i2;
uint8_t i3;
};
#pragma pack(pop)
} isample;
operator T() const {
isample s;
s.i0 = 0;
s.i1 = b0;
s.i2 = b1;
s.i3 = b2;
return s.i;
}
};
#pragma pack(pop)
#else
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__));
#endif
#ifdef _MSC_VER
#pragma pack(push, 1)
template<>
struct TripleByteLE
{
uint8_t b0;
uint8_t b1;
uint8_t b2;
typedef union {
#pragma pack(push, 1)
struct {
qint32 i;
};
#pragma pack(pop)
#pragma pack(push, 1)
struct {
uint8_t i0;
uint8_t i1;
uint8_t i2;
uint8_t i3;
};
#pragma pack(pop)
} isample;
operator qint32() const {
isample s;
s.i0 = 0;
s.i1 = b0;
s.i2 = b1;
s.i3 = b2;
return s.i >> 8;
}
};
#pragma pack(pop)
#else
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__));
#endif
#ifdef _MSC_VER
#pragma pack(push, 1)
template<>
struct TripleByteLE
{
uint8_t b0;
uint8_t b1;
uint8_t b2;
typedef union {
#pragma pack(push, 1)
struct {
qint64 i;
};
#pragma pack(pop)
#pragma pack(push, 1)
struct {
uint32_t ia;
uint8_t i0;
uint8_t i1;
uint8_t i2;
uint8_t i3;
};
#pragma pack(pop)
} 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;
}
};
#pragma pack(pop)
#else
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__));
#endif
/** Decimators with integer input and integer output */
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
IntHalfbandFilterEO m_decimator2; // 1st stages
IntHalfbandFilterEO m_decimator4; // 2nd stages
IntHalfbandFilterEO m_decimator8; // 3rd stages
IntHalfbandFilterEO m_decimator16; // 4th stages
IntHalfbandFilterEO m_decimator32; // 5th stages
IntHalfbandFilterEO m_decimator64; // 6th stages
#else
IntHalfbandFilterEO m_decimator2; // 1st stages
IntHalfbandFilterEO m_decimator4; // 2nd stages
IntHalfbandFilterEO m_decimator8; // 3rd stages
IntHalfbandFilterEO m_decimator16; // 4th stages
IntHalfbandFilterEO m_decimator32; // 5th stages
IntHalfbandFilterEO m_decimator64; // 6th stages
#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)
{
StorageType 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)
{
StorageType 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);
}
}
// No filtering: bad for Rx OK for signal tracking
//template
//void Decimators::decimate2_inf(SampleVector::iterator* it, const T* buf, qint32 len)
//{
// StorageType 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)
//{
// StorageType 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_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
StorageType buf2[4];
for (int pos = 0; pos < len - 7; pos += 8)
{
m_decimator2.myDecimateInf(
buf[pos+0] << decimation_shifts::pre2,
buf[pos+1] << decimation_shifts::pre2,
buf[pos+2] << decimation_shifts::pre2,
buf[pos+3] << decimation_shifts::pre2,
buf[pos+4] << decimation_shifts::pre2,
buf[pos+5] << decimation_shifts::pre2,
buf[pos+6] << decimation_shifts::pre2,
buf[pos+7] << decimation_shifts::pre2,
&buf2[0]);
(**it).setReal(buf2[0] >> decimation_shifts::post2);
(**it).setImag(buf2[1] >> decimation_shifts::post2);
++(*it);
(**it).setReal(buf2[2] >> decimation_shifts::post2);
(**it).setImag(buf2[3] >> decimation_shifts::post2);
++(*it);
}
}
template
void Decimators::decimate2_sup(SampleVector::iterator* it, const T* buf, qint32 len)
{
StorageType buf2[4];
for (int pos = 0; pos < len - 7; pos += 8)
{
m_decimator2.myDecimateSup(
buf[pos+0] << decimation_shifts::pre2,
buf[pos+1] << decimation_shifts::pre2,
buf[pos+2] << decimation_shifts::pre2,
buf[pos+3] << decimation_shifts::pre2,
buf[pos+4] << decimation_shifts::pre2,
buf[pos+5] << decimation_shifts::pre2,
buf[pos+6] << decimation_shifts::pre2,
buf[pos+7] << decimation_shifts::pre2,
&buf2[0]);
(**it).setReal(buf2[0] >> decimation_shifts::post2);
(**it).setImag(buf2[1] >> decimation_shifts::post2);
++(*it);
(**it).setReal(buf2[2] >> decimation_shifts::post2);
(**it).setImag(buf2[3] >> decimation_shifts::post2);
++(*it);
}
}
// No filtering: bad for Rx OK for signal tracking
//template
//void Decimators::decimate2_sup(SampleVector::iterator* it, const T* buf, qint32 len)
//{
// StorageType 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::decimate4_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
StorageType buf2[8], buf4[4];
for (int pos = 0; pos < len - 15; pos += 16)
{
m_decimator2.myDecimateInf(
buf[pos+0] << decimation_shifts::pre4,
buf[pos+1] << decimation_shifts::pre4,
buf[pos+2] << decimation_shifts::pre4,
buf[pos+3] << decimation_shifts::pre4,
buf[pos+4] << decimation_shifts::pre4,
buf[pos+5] << decimation_shifts::pre4,
buf[pos+6] << decimation_shifts::pre4,
buf[pos+7] << decimation_shifts::pre4,
&buf2[0]);
m_decimator2.myDecimateInf(
buf[pos+8] << decimation_shifts::pre4,
buf[pos+9] << decimation_shifts::pre4,
buf[pos+10] << decimation_shifts::pre4,
buf[pos+11] << decimation_shifts::pre4,
buf[pos+12] << decimation_shifts::pre4,
buf[pos+13] << decimation_shifts::pre4,
buf[pos+14] << decimation_shifts::pre4,
buf[pos+15] << decimation_shifts::pre4,
&buf2[4]);
m_decimator4.myDecimateSup(
buf2[0],
buf2[1],
buf2[2],
buf2[3],
buf2[4],
buf2[5],
buf2[6],
buf2[7],
&buf4[0]);
(**it).setReal(buf4[0] >> decimation_shifts::post4);
(**it).setImag(buf4[1] >> decimation_shifts::post4);
++(*it);
(**it).setReal(buf4[2] >> decimation_shifts::post4);
(**it).setImag(buf4[3] >> decimation_shifts::post4);
++(*it);
}
}
template
void Decimators::decimate4_sup(SampleVector::iterator* it, const T* buf, qint32 len)
{
StorageType buf2[8], buf4[4];
for (int pos = 0; pos < len - 15; pos += 16)
{
m_decimator2.myDecimateSup(
buf[pos+0] << decimation_shifts::pre4,
buf[pos+1] << decimation_shifts::pre4,
buf[pos+2] << decimation_shifts::pre4,
buf[pos+3] << decimation_shifts::pre4,
buf[pos+4] << decimation_shifts::pre4,
buf[pos+5] << decimation_shifts::pre4,
buf[pos+6] << decimation_shifts::pre4,
buf[pos+7] << decimation_shifts::pre4,
&buf2[0]);
m_decimator2.myDecimateSup(
buf[pos+8] << decimation_shifts::pre4,
buf[pos+9] << decimation_shifts::pre4,
buf[pos+10] << decimation_shifts::pre4,
buf[pos+11] << decimation_shifts::pre4,
buf[pos+12] << decimation_shifts::pre4,
buf[pos+13] << decimation_shifts::pre4,
buf[pos+14] << decimation_shifts::pre4,
buf[pos+15] << decimation_shifts::pre4,
&buf2[4]);
m_decimator4.myDecimateInf(
buf2[0],
buf2[1],
buf2[2],
buf2[3],
buf2[4],
buf2[5],
buf2[6],
buf2[7],
&buf4[0]);
(**it).setReal(buf4[0] >> decimation_shifts::post4);
(**it).setImag(buf4[1] >> decimation_shifts::post4);
++(*it);
(**it).setReal(buf4[2] >> decimation_shifts::post4);
(**it).setImag(buf4[3] >> decimation_shifts::post4);
++(*it);
}
}
// No filtering: bad for Rx OK for signal tracking
//template
//void Decimators::decimate4_inf(SampleVector::iterator* it, const T* buf, qint32 len)
//{
// StorageType 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);
// }
//}
// No filtering: bad for Rx OK for signal tracking
//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]
// StorageType 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::decimate8_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
StorageType buf2[16], buf4[8], buf8[4];
for (int pos = 0; pos < len - 31; pos += 32)
{
m_decimator2.myDecimateInf(
buf[pos+0] << decimation_shifts::pre8,
buf[pos+1] << decimation_shifts::pre8,
buf[pos+2] << decimation_shifts::pre8,
buf[pos+3] << decimation_shifts::pre8,
buf[pos+4] << decimation_shifts::pre8,
buf[pos+5] << decimation_shifts::pre8,
buf[pos+6] << decimation_shifts::pre8,
buf[pos+7] << decimation_shifts::pre8,
&buf2[0]);
m_decimator2.myDecimateInf(
buf[pos+8] << decimation_shifts::pre8,
buf[pos+9] << decimation_shifts::pre8,
buf[pos+10] << decimation_shifts::pre8,
buf[pos+11] << decimation_shifts::pre8,
buf[pos+12] << decimation_shifts::pre8,
buf[pos+13] << decimation_shifts::pre8,
buf[pos+14] << decimation_shifts::pre8,
buf[pos+15] << decimation_shifts::pre8,
&buf2[4]);
m_decimator2.myDecimateInf(
buf[pos+16] << decimation_shifts::pre8,
buf[pos+17] << decimation_shifts::pre8,
buf[pos+18] << decimation_shifts::pre8,
buf[pos+19] << decimation_shifts::pre8,
buf[pos+20] << decimation_shifts::pre8,
buf[pos+21] << decimation_shifts::pre8,
buf[pos+22] << decimation_shifts::pre8,
buf[pos+23] << decimation_shifts::pre8,
&buf2[8]);
m_decimator2.myDecimateInf(
buf[pos+24] << decimation_shifts::pre8,
buf[pos+25] << decimation_shifts::pre8,
buf[pos+26] << decimation_shifts::pre8,
buf[pos+27] << decimation_shifts::pre8,
buf[pos+28] << decimation_shifts::pre8,
buf[pos+29] << decimation_shifts::pre8,
buf[pos+30] << decimation_shifts::pre8,
buf[pos+31] << decimation_shifts::pre8,
&buf2[12]);
m_decimator4.myDecimateSup(
&buf2[0],
&buf4[0]);
m_decimator4.myDecimateSup(
&buf2[8],
&buf4[4]);
m_decimator8.myDecimateCen(
&buf4[0],
&buf8[0]);
(**it).setReal(buf8[0] >> decimation_shifts::post8);
(**it).setImag(buf8[1] >> decimation_shifts::post8);
++(*it);
(**it).setReal(buf8[2] >> decimation_shifts::post8);
(**it).setImag(buf8[3] >> decimation_shifts::post8);
++(*it);
}
}
template
void Decimators::decimate8_sup(SampleVector::iterator* it, const T* buf, qint32 len)
{
StorageType buf2[16], buf4[8], buf8[4];
for (int pos = 0; pos < len - 31; pos += 32)
{
m_decimator2.myDecimateSup(
buf[pos+0] << decimation_shifts::pre8,
buf[pos+1] << decimation_shifts::pre8,
buf[pos+2] << decimation_shifts::pre8,
buf[pos+3] << decimation_shifts::pre8,
buf[pos+4] << decimation_shifts::pre8,
buf[pos+5] << decimation_shifts::pre8,
buf[pos+6] << decimation_shifts::pre8,
buf[pos+7] << decimation_shifts::pre8,
&buf2[0]);
m_decimator2.myDecimateSup(
buf[pos+8] << decimation_shifts::pre8,
buf[pos+9] << decimation_shifts::pre8,
buf[pos+10] << decimation_shifts::pre8,
buf[pos+11] << decimation_shifts::pre8,
buf[pos+12] << decimation_shifts::pre8,
buf[pos+13] << decimation_shifts::pre8,
buf[pos+14] << decimation_shifts::pre8,
buf[pos+15] << decimation_shifts::pre8,
&buf2[4]);
m_decimator2.myDecimateSup(
buf[pos+16] << decimation_shifts::pre8,
buf[pos+17] << decimation_shifts::pre8,
buf[pos+18] << decimation_shifts::pre8,
buf[pos+19] << decimation_shifts::pre8,
buf[pos+20] << decimation_shifts::pre8,
buf[pos+21] << decimation_shifts::pre8,
buf[pos+22] << decimation_shifts::pre8,
buf[pos+23] << decimation_shifts::pre8,
&buf2[8]);
m_decimator2.myDecimateSup(
buf[pos+24] << decimation_shifts::pre8,
buf[pos+25] << decimation_shifts::pre8,
buf[pos+26] << decimation_shifts::pre8,
buf[pos+27] << decimation_shifts::pre8,
buf[pos+28] << decimation_shifts::pre8,
buf[pos+29] << decimation_shifts::pre8,
buf[pos+30] << decimation_shifts::pre8,
buf[pos+31] << decimation_shifts::pre8,
&buf2[12]);
m_decimator4.myDecimateInf(
&buf2[0],
&buf4[0]);
m_decimator4.myDecimateInf(
&buf2[8],
&buf4[4]);
m_decimator8.myDecimateCen(
&buf4[0],
&buf8[0]);
(**it).setReal(buf8[0] >> decimation_shifts::post8);
(**it).setImag(buf8[1] >> decimation_shifts::post8);
++(*it);
(**it).setReal(buf8[2] >> decimation_shifts::post8);
(**it).setImag(buf8[3] >> decimation_shifts::post8);
++(*it);
}
}
template
void Decimators::decimate16_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
StorageType buf2[32], buf4[16], buf8[8], buf16[4];
for (int pos = 0; pos < len - 63; pos += 64)
{
m_decimator2.myDecimateInf(
buf[pos+0] << decimation_shifts::pre16,
buf[pos+1] << decimation_shifts::pre16,
buf[pos+2] << decimation_shifts::pre16,
buf[pos+3] << decimation_shifts::pre16,
buf[pos+4] << decimation_shifts::pre16,
buf[pos+5] << decimation_shifts::pre16,
buf[pos+6] << decimation_shifts::pre16,
buf[pos+7] << decimation_shifts::pre16,
&buf2[0]);
m_decimator2.myDecimateInf(
buf[pos+8] << decimation_shifts::pre16,
buf[pos+9] << decimation_shifts::pre16,
buf[pos+10] << decimation_shifts::pre16,
buf[pos+11] << decimation_shifts::pre16,
buf[pos+12] << decimation_shifts::pre16,
buf[pos+13] << decimation_shifts::pre16,
buf[pos+14] << decimation_shifts