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RTLSDR: optimized decimator

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This commit is contained in:
f4exb 2018-05-02 00:24:50 +02:00
parent 19c32b4354
commit 058f3d5af8
2 changed files with 66 additions and 82 deletions
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4
plugins/samplesource/rtlsdr/rtlsdrthread.h
View File

@ -52,11 +52,7 @@ private:
unsigned int m_log2Decim;
int m_fcPos;
#ifdef SDR_RX_SAMPLE_24BIT
DecimatorsU<qint64, quint8, SDR_RX_SAMP_SZ, 8, 127> m_decimators;
#else
DecimatorsU<qint32, quint8, SDR_RX_SAMP_SZ, 8, 127> m_decimators;
#endif
void run();
void callback(const quint8* buf, qint32 len);

144
sdrbase/dsp/decimatorsu.h
View File

@ -24,15 +24,12 @@
#define INCLUDE_GPL_DSP_DECIMATORSU_H_
#include "dsp/dsptypes.h"
#ifdef SDR_RX_SAMPLE_24BIT
#include "dsp/inthalfbandfilterdb.h"
#else
#ifdef USE_SSE4_1
#include "dsp/inthalfbandfiltereo2.h"
#else // SDR_RX_SAMPLE_24BIT
#include "dsp/inthalfbandfiltereo1.h"
#else
#include "dsp/inthalfbandfilterdb.h"
#endif
#endif
#endif // SDR_RX_SAMPLE_24BIT
#define DECIMATORS_HB_FILTER_ORDER 64
@ -180,7 +177,7 @@ struct decimation_shifts<24, 8>
static const uint post64 = 0;
};
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
class DecimatorsU
{
public:
@ -207,33 +204,24 @@ public:
private:
#ifdef SDR_RX_SAMPLE_24BIT
IntHalfbandFilterDB<qint64, DECIMATORS_HB_FILTER_ORDER> m_decimator2; // 1st stages
IntHalfbandFilterDB<qint64, DECIMATORS_HB_FILTER_ORDER> m_decimator4; // 2nd stages
IntHalfbandFilterDB<qint64, DECIMATORS_HB_FILTER_ORDER> m_decimator8; // 3rd stages
IntHalfbandFilterDB<qint64, DECIMATORS_HB_FILTER_ORDER> m_decimator16; // 4th stages
IntHalfbandFilterDB<qint64, DECIMATORS_HB_FILTER_ORDER> m_decimator32; // 5th stages
IntHalfbandFilterDB<qint64, DECIMATORS_HB_FILTER_ORDER> m_decimator64; // 6th stages
IntHalfbandFilterEO2<DECIMATORS_HB_FILTER_ORDER> m_decimator2; // 1st stages
IntHalfbandFilterEO2<DECIMATORS_HB_FILTER_ORDER> m_decimator4; // 2nd stages
IntHalfbandFilterEO2<DECIMATORS_HB_FILTER_ORDER> m_decimator8; // 3rd stages
IntHalfbandFilterEO2<DECIMATORS_HB_FILTER_ORDER> m_decimator16; // 4th stages
IntHalfbandFilterEO2<DECIMATORS_HB_FILTER_ORDER> m_decimator32; // 5th stages
IntHalfbandFilterEO2<DECIMATORS_HB_FILTER_ORDER> m_decimator64; // 6th stages
#else
#ifdef USE_SSE4_1
IntHalfbandFilterEO1<DECIMATORS_HB_FILTER_ORDER> m_decimator2; // 1st stages
IntHalfbandFilterEO1<DECIMATORS_HB_FILTER_ORDER> m_decimator4; // 2nd stages
IntHalfbandFilterEO1<DECIMATORS_HB_FILTER_ORDER> m_decimator8; // 3rd stages
IntHalfbandFilterEO1<DECIMATORS_HB_FILTER_ORDER> m_decimator16; // 4th stages
IntHalfbandFilterEO1<DECIMATORS_HB_FILTER_ORDER> m_decimator32; // 5th stages
IntHalfbandFilterEO1<DECIMATORS_HB_FILTER_ORDER> m_decimator64; // 6th stages
#else
IntHalfbandFilterDB<qint32, DECIMATORS_HB_FILTER_ORDER> m_decimator2; // 1st stages
IntHalfbandFilterDB<qint32, DECIMATORS_HB_FILTER_ORDER> m_decimator4; // 2nd stages
IntHalfbandFilterDB<qint32, DECIMATORS_HB_FILTER_ORDER> m_decimator8; // 3rd stages
IntHalfbandFilterDB<qint32, DECIMATORS_HB_FILTER_ORDER> m_decimator16; // 4th stages
IntHalfbandFilterDB<qint32, DECIMATORS_HB_FILTER_ORDER> m_decimator32; // 5th stages
IntHalfbandFilterDB<qint32, DECIMATORS_HB_FILTER_ORDER> m_decimator64; // 6th stages
#endif
#endif
};
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate1(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::decimate1(SampleVector::iterator* it, const T* buf, qint32 len)
{
qint32 xreal, yimag;
@ -247,8 +235,8 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate1(SampleVector
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate2_inf(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::decimate2_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
qint32 xreal, yimag;
@ -268,10 +256,10 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate2_inf(SampleVe
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate2_sup(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::decimate2_sup(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal, yimag;
StorageType xreal, yimag;
for (int pos = 0; pos < len - 7; pos += 8)
{
@ -289,10 +277,10 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate2_sup(SampleVe
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate4_inf(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::decimate4_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal, yimag;
StorageType xreal, yimag;
for (int pos = 0; pos < len - 7; pos += 8)
{
@ -306,8 +294,8 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate4_inf(SampleVe
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate4_sup(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::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
@ -315,7 +303,7 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate4_sup(SampleVe
// 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;
StorageType xreal, yimag;
for (int pos = 0; pos < len - 7; pos += 8)
{
@ -329,10 +317,10 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate4_sup(SampleVe
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate8_inf(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::decimate8_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal[2], yimag[2];
StorageType xreal[2], yimag[2];
for (int pos = 0; pos < len - 15; pos += 8)
{
@ -352,10 +340,10 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate8_inf(SampleVe
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate8_sup(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::decimate8_sup(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal[2], yimag[2];
StorageType xreal[2], yimag[2];
for (int pos = 0; pos < len - 15; pos += 8)
{
@ -375,12 +363,12 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate8_sup(SampleVe
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate16_inf(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::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];
StorageType xreal[4], yimag[4];
for (int pos = 0; pos < len - 31; )
{
@ -403,12 +391,12 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate16_inf(SampleV
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate16_sup(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::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];
StorageType xreal[4], yimag[4];
for (int pos = 0; pos < len - 31; )
{
@ -431,10 +419,10 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate16_sup(SampleV
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate32_inf(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::decimate32_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal[8], yimag[8];
StorageType xreal[8], yimag[8];
for (int pos = 0; pos < len - 63; )
{
@ -462,10 +450,10 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate32_inf(SampleV
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate32_sup(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::decimate32_sup(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal[8], yimag[8];
StorageType xreal[8], yimag[8];
for (int pos = 0; pos < len - 63; )
{
@ -493,10 +481,10 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate32_sup(SampleV
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate64_inf(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::decimate64_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal[16], yimag[16];
StorageType xreal[16], yimag[16];
for (int pos = 0; pos < len - 127; )
{
@ -533,10 +521,10 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate64_inf(SampleV
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate64_sup(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::decimate64_sup(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType xreal[16], yimag[16];
StorageType xreal[16], yimag[16];
for (int pos = 0; pos < len - 127; )
{
@ -573,10 +561,10 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate64_sup(SampleV
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate2_cen(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::decimate2_cen(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType intbuf[2];
StorageType intbuf[2];
for (int pos = 0; pos < len - 3; pos += 4)
{
@ -595,10 +583,10 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate2_cen(SampleVe
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate4_cen(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::decimate4_cen(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType intbuf[4];
StorageType intbuf[4];
for (int pos = 0; pos < len - 7; pos += 8)
{
@ -630,10 +618,10 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate4_cen(SampleVe
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate8_cen(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::decimate8_cen(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType intbuf[8];
StorageType intbuf[8];
for (int pos = 0; pos < len - 15; pos += 16)
{
@ -690,10 +678,10 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate8_cen(SampleVe
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate16_cen(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::decimate16_cen(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType intbuf[16];
StorageType intbuf[16];
for (int pos = 0; pos < len - 31; pos += 32)
{
@ -799,10 +787,10 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate16_cen(SampleV
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate32_cen(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::decimate32_cen(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType intbuf[32];
StorageType intbuf[32];
for (int pos = 0; pos < len - 63; pos += 64)
{
@ -1005,10 +993,10 @@ void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate32_cen(SampleV
}
}
template<typename AccuType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<AccuType, T, SdrBits, InputBits, Shift>::decimate64_cen(SampleVector::iterator* it, const T* buf, qint32 len)
template<typename StorageType, typename T, uint SdrBits, uint InputBits, int Shift>
void DecimatorsU<StorageType, T, SdrBits, InputBits, Shift>::decimate64_cen(SampleVector::iterator* it, const T* buf, qint32 len)
{
AccuType intbuf[64];
StorageType intbuf[64];
for (int pos = 0; pos < len - 127; pos += 128)
{