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Tx support: optimize final interpolator stages

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This commit is contained in:
f4exb 2017-01-03 23:25:20 +01:00
parent 9b72a3c064
commit 3479559859
3 changed files with 36 additions and 13 deletions
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12
sdrbase/dsp/hbfiltertraits.cpp
View File

@ -18,6 +18,18 @@
#include "dsp/hbfiltertraits.h" #include "dsp/hbfiltertraits.h"
const int16_t HBFIRFilterTraits<16>::hbMod[16+6] = {
15,16,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,0,1,2
};
const int32_t HBFIRFilterTraits<16>::hbCoeffs[4] = {
//* Firwin as in https://www.dsprelated.com/showcode/270.php */
(int32_t)(-0.0052391810630145274965685509016566356877 * (1 << hbShift)),
(int32_t)(0.0232111017863650750947535073009930783883 * (1 << hbShift)),
(int32_t)(-0.0761058457486735451258397233686991967261 * (1 << hbShift)),
(int32_t)(0.3076987787367443383246268240327481180429 * (1 << hbShift)),
};
const int16_t HBFIRFilterTraits<32>::hbMod[32+6] = { const int16_t HBFIRFilterTraits<32>::hbMod[32+6] = {
31,32,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19, 20,21,22, 31,32,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19, 20,21,22,
23,24,25,26,27,28,29,30,31,32,0,1,2 23,24,25,26,27,28,29,30,31,32,0,1,2

9
sdrbase/dsp/hbfiltertraits.h
View File

@ -31,6 +31,15 @@ struct HBFIRFilterTraits
{ {
}; };
template<>
struct HBFIRFilterTraits<16>
{
static const int32_t hbOrder = 16;
static const int32_t hbShift = 14;
static const int16_t hbMod[16+6];
static const int32_t hbCoeffs[4] __attribute__ ((aligned (16)));
};
template<> template<>
struct HBFIRFilterTraits<32> struct HBFIRFilterTraits<32>
{ {

28
sdrbase/dsp/interpolators.h
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@ -24,7 +24,9 @@
#include "dsp/inthalfbandfilterdb.h" #include "dsp/inthalfbandfilterdb.h"
#endif #endif
#define INTERPOLATORS_HB_FILTER_ORDER 64 #define INTERPOLATORS_HB_FILTER_ORDER_FIRST 64
#define INTERPOLATORS_HB_FILTER_ORDER_SECOND 32
#define INTERPOLATORS_HB_FILTER_ORDER_NEXT 16
template<uint SdrBits, uint OutputBits> template<uint SdrBits, uint OutputBits>
struct interpolation_shifts struct interpolation_shifts
@ -113,19 +115,19 @@ public:
private: private:
#ifdef USE_SSE4_1 #ifdef USE_SSE4_1
IntHalfbandFilterEO1<INTERPOLATORS_HB_FILTER_ORDER> m_interpolator2; // 1st stages IntHalfbandFilterEO1<INTERPOLATORS_HB_FILTER_ORDER_FIRST> m_interpolator2; // 1st stages
IntHalfbandFilterEO1<INTERPOLATORS_HB_FILTER_ORDER> m_interpolator4; // 2nd stages IntHalfbandFilterEO1<INTERPOLATORS_HB_FILTER_ORDER_SECOND> m_interpolator4; // 2nd stages
IntHalfbandFilterEO1<INTERPOLATORS_HB_FILTER_ORDER> m_interpolator8; // 3rd stages IntHalfbandFilterEO1<INTERPOLATORS_HB_FILTER_ORDER_NEXT> m_interpolator8; // 3rd stages
IntHalfbandFilterEO1<INTERPOLATORS_HB_FILTER_ORDER> m_interpolator16; // 4th stages IntHalfbandFilterEO1<INTERPOLATORS_HB_FILTER_ORDER_NEXT> m_interpolator16; // 4th stages
IntHalfbandFilterEO1<INTERPOLATORS_HB_FILTER_ORDER> m_interpolator32; // 5th stages IntHalfbandFilterEO1<INTERPOLATORS_HB_FILTER_ORDER_NEXT> m_interpolator32; // 5th stages
IntHalfbandFilterEO1<INTERPOLATORS_HB_FILTER_ORDER> m_interpolator64; // 6th stages IntHalfbandFilterEO1<INTERPOLATORS_HB_FILTER_ORDER_NEXT> m_interpolator64; // 6th stages
#else #else
IntHalfbandFilterDB<INTERPOLATORS_HB_FILTER_ORDER> m_interpolator2; // 1st stages IntHalfbandFilterDB<INTERPOLATORS_HB_FILTER_ORDER_FIRST> m_interpolator2; // 1st stages
IntHalfbandFilterDB<INTERPOLATORS_HB_FILTER_ORDER> m_interpolator4; // 2nd stages IntHalfbandFilterDB<INTERPOLATORS_HB_FILTER_ORDER_SECOND> m_interpolator4; // 2nd stages
IntHalfbandFilterDB<INTERPOLATORS_HB_FILTER_ORDER> m_interpolator8; // 3rd stages IntHalfbandFilterDB<INTERPOLATORS_HB_FILTER_ORDER_NEXT> m_interpolator8; // 3rd stages
IntHalfbandFilterDB<INTERPOLATORS_HB_FILTER_ORDER> m_interpolator16; // 4th stages IntHalfbandFilterDB<INTERPOLATORS_HB_FILTER_ORDER_NEXT> m_interpolator16; // 4th stages
IntHalfbandFilterDB<INTERPOLATORS_HB_FILTER_ORDER> m_interpolator32; // 5th stages IntHalfbandFilterDB<INTERPOLATORS_HB_FILTER_ORDER_NEXT> m_interpolator32; // 5th stages
IntHalfbandFilterDB<INTERPOLATORS_HB_FILTER_ORDER> m_interpolator64; // 6th stages IntHalfbandFilterDB<INTERPOLATORS_HB_FILTER_ORDER_NEXT> m_interpolator64; // 6th stages
#endif #endif
}; };