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Deep redesign: do decimation chain fully on 32 bit signed integers

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This commit is contained in:
f4exb 2015-09-02 00:25:29 +02:00
parent a559035e22
commit 107efd3691
2 changed files with 45 additions and 45 deletions
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84
include-gpl/dsp/decimators.h
View File

@ -101,7 +101,7 @@ private:
template<typename T, uint SdrBits, uint InputBits>
void Decimators<T, SdrBits, InputBits>::decimate1(SampleVector::iterator* it, const T* buf, qint32 len)
{
qint16 xreal, yimag;
qint32 xreal, yimag;
for (int pos = 0; pos < len; pos += 2)
{
@ -116,7 +116,7 @@ void Decimators<T, SdrBits, InputBits>::decimate1(SampleVector::iterator* it, co
template<typename T, uint SdrBits, uint InputBits>
void Decimators<T, SdrBits, InputBits>::decimate2_u(SampleVector::iterator* it, const T* buf, qint32 len)
{
qint16 xreal, yimag;
qint32 xreal, yimag;
for (int pos = 0; pos < len - 7; pos += 8)
{
@ -137,7 +137,7 @@ void Decimators<T, SdrBits, InputBits>::decimate2_u(SampleVector::iterator* it,
template<typename T, uint SdrBits, uint InputBits>
void Decimators<T, SdrBits, InputBits>::decimate2_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
qint16 xreal, yimag;
qint32 xreal, yimag;
for (int pos = 0; pos < len - 7; pos += 8)
{
@ -158,7 +158,7 @@ void Decimators<T, SdrBits, InputBits>::decimate2_inf(SampleVector::iterator* it
template<typename T, uint SdrBits, uint InputBits>
void Decimators<T, SdrBits, InputBits>::decimate2_sup(SampleVector::iterator* it, const T* buf, qint32 len)
{
qint16 xreal, yimag;
qint32 xreal, yimag;
for (int pos = 0; pos < len - 7; pos += 8)
{
@ -183,8 +183,8 @@ void Decimators<T, SdrBits, InputBits>::decimate2_cen(SampleVector::iterator* it
while (pos < len - 3)
{
qint16 x0 = buf[pos+0] << decimation_shifts<SdrBits, InputBits>::pre2;
qint16 y0 = buf[pos+1] << decimation_shifts<SdrBits, InputBits>::pre2;
qint32 x0 = buf[pos+0] << decimation_shifts<SdrBits, InputBits>::pre2;
qint32 y0 = buf[pos+1] << decimation_shifts<SdrBits, InputBits>::pre2;
pos += 2;
if (m_decimator2.workDecimateCenter(&x0, &y0))
@ -203,14 +203,14 @@ void Decimators<T, SdrBits, InputBits>::decimate4_cen(SampleVector::iterator* it
while (pos < len)
{
qint16 x0 = buf[pos+0] << decimation_shifts<SdrBits, InputBits>::pre4;
qint16 y0 = buf[pos+1] << decimation_shifts<SdrBits, InputBits>::pre4;
qint32 x0 = buf[pos+0] << decimation_shifts<SdrBits, InputBits>::pre4;
qint32 y0 = buf[pos+1] << decimation_shifts<SdrBits, InputBits>::pre4;
pos += 2;
if (m_decimator2.workDecimateCenter(&x0, &y0))
{
qint16 x1 = x0;
qint16 y1 = y0;
qint32 x1 = x0;
qint32 y1 = y0;
if (m_decimator4.workDecimateCenter(&x1, &y1))
{
@ -229,19 +229,19 @@ void Decimators<T, SdrBits, InputBits>::decimate8_cen(SampleVector::iterator* it
while (pos < len)
{
qint16 x0 = buf[pos+0] << decimation_shifts<SdrBits, InputBits>::pre8;
qint16 y0 = buf[pos+1] << decimation_shifts<SdrBits, InputBits>::pre8;
qint32 x0 = buf[pos+0] << decimation_shifts<SdrBits, InputBits>::pre8;
qint32 y0 = buf[pos+1] << decimation_shifts<SdrBits, InputBits>::pre8;
pos += 2;
if (m_decimator2.workDecimateCenter(&x0, &y0))
{
qint16 x1 = x0;
qint16 y1 = y0;
qint32 x1 = x0;
qint32 y1 = y0;
if (m_decimator4.workDecimateCenter(&x1, &y1))
{
qint16 x2 = x1;
qint16 y2 = y1;
qint32 x2 = x1;
qint32 y2 = y1;
if (m_decimator8.workDecimateCenter(&x2, &y2))
{
@ -261,24 +261,24 @@ void Decimators<T, SdrBits, InputBits>::decimate16_cen(SampleVector::iterator* i
while (pos < len)
{
qint16 x0 = buf[pos+0] << decimation_shifts<SdrBits, InputBits>::pre16;
qint16 y0 = buf[pos+1] << decimation_shifts<SdrBits, InputBits>::pre16;
qint32 x0 = buf[pos+0] << decimation_shifts<SdrBits, InputBits>::pre16;
qint32 y0 = buf[pos+1] << decimation_shifts<SdrBits, InputBits>::pre16;
pos += 2;
if (m_decimator2.workDecimateCenter(&x0, &y0))
{
qint16 x1 = x0;
qint16 y1 = y0;
qint32 x1 = x0;
qint32 y1 = y0;
if (m_decimator4.workDecimateCenter(&x1, &y1))
{
qint16 x2 = x1;
qint16 y2 = y1;
qint32 x2 = x1;
qint32 y2 = y1;
if (m_decimator8.workDecimateCenter(&x2, &y2))
{
qint16 x3 = x2;
qint16 y3 = y2;
qint32 x3 = x2;
qint32 y3 = y2;
if (m_decimator16.workDecimateCenter(&x3, &y3))
{
@ -299,29 +299,29 @@ void Decimators<T, SdrBits, InputBits>::decimate32_cen(SampleVector::iterator* i
while (pos < len)
{
qint16 x0 = buf[pos+0] << decimation_shifts<SdrBits, InputBits>::pre32;
qint16 y0 = buf[pos+1] << decimation_shifts<SdrBits, InputBits>::pre32;
qint32 x0 = buf[pos+0] << decimation_shifts<SdrBits, InputBits>::pre32;
qint32 y0 = buf[pos+1] << decimation_shifts<SdrBits, InputBits>::pre32;
pos += 2;
if (m_decimator2.workDecimateCenter(&x0, &y0))
{
qint16 x1 = x0;
qint16 y1 = y0;
qint32 x1 = x0;
qint32 y1 = y0;
if (m_decimator4.workDecimateCenter(&x1, &y1))
{
qint16 x2 = x1;
qint16 y2 = y1;
qint32 x2 = x1;
qint32 y2 = y1;
if (m_decimator8.workDecimateCenter(&x2, &y2))
{
qint16 x3 = x2;
qint16 y3 = y2;
qint32 x3 = x2;
qint32 y3 = y2;
if (m_decimator16.workDecimateCenter(&x3, &y3))
{
qint16 x4 = x3;
qint16 y4 = y3;
qint32 x4 = x3;
qint32 y4 = y3;
if (m_decimator32.workDecimateCenter(&x4, &y4))
{
@ -339,7 +339,7 @@ void Decimators<T, SdrBits, InputBits>::decimate32_cen(SampleVector::iterator* i
template<typename T, uint SdrBits, uint InputBits>
void Decimators<T, SdrBits, InputBits>::decimate4_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
qint16 xreal, yimag;
qint32 xreal, yimag;
for (int pos = 0; pos < len - 7; pos += 8)
{
@ -362,7 +362,7 @@ void Decimators<T, SdrBits, InputBits>::decimate4_sup(SampleVector::iterator* it
// 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]
qint16 xreal, yimag;
qint32 xreal, yimag;
for (int pos = 0; pos < len - 7; pos += 8)
{
@ -379,7 +379,7 @@ void Decimators<T, SdrBits, InputBits>::decimate4_sup(SampleVector::iterator* it
template<typename T, uint SdrBits, uint InputBits>
void Decimators<T, SdrBits, InputBits>::decimate8_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
qint16 xreal[2], yimag[2];
qint32 xreal[2], yimag[2];
for (int pos = 0; pos < len - 15; pos += 8)
{
@ -402,7 +402,7 @@ void Decimators<T, SdrBits, InputBits>::decimate8_inf(SampleVector::iterator* it
template<typename T, uint SdrBits, uint InputBits>
void Decimators<T, SdrBits, InputBits>::decimate8_sup(SampleVector::iterator* it, const T* buf, qint32 len)
{
qint16 xreal[2], yimag[2];
qint32 xreal[2], yimag[2];
for (int pos = 0; pos < len - 15; pos += 8)
{
@ -427,7 +427,7 @@ void Decimators<T, SdrBits, InputBits>::decimate16_inf(SampleVector::iterator* i
{
// Offset tuning: 4x downsample and rotate, then
// downsample 4x more. [ rotate: 0, 1, -3, 2, -4, -5, 7, -6]
qint16 xreal[4], yimag[4];
qint32 xreal[4], yimag[4];
for (int pos = 0; pos < len - 31; )
{
@ -455,7 +455,7 @@ void Decimators<T, SdrBits, InputBits>::decimate16_sup(SampleVector::iterator* i
{
// Offset tuning: 4x downsample and rotate, then
// downsample 4x more. [ rotate: 1, 0, -2, 3, -5, -4, 6, -7]
qint16 xreal[4], yimag[4];
qint32 xreal[4], yimag[4];
for (int pos = 0; pos < len - 31; )
{
@ -481,7 +481,7 @@ void Decimators<T, SdrBits, InputBits>::decimate16_sup(SampleVector::iterator* i
template<typename T, uint SdrBits, uint InputBits>
void Decimators<T, SdrBits, InputBits>::decimate32_inf(SampleVector::iterator* it, const T* buf, qint32 len)
{
qint16 xreal[8], yimag[8];
qint32 xreal[8], yimag[8];
for (int pos = 0; pos < len - 63; )
{
@ -512,7 +512,7 @@ void Decimators<T, SdrBits, InputBits>::decimate32_inf(SampleVector::iterator* i
template<typename T, uint SdrBits, uint InputBits>
void Decimators<T, SdrBits, InputBits>::decimate32_sup(SampleVector::iterator* it, const T* buf, qint32 len)
{
qint16 xreal[8], yimag[8];
qint32 xreal[8], yimag[8];
for (int pos = 0; pos < len - 63; )
{

6
include-gpl/dsp/inthalfbandfilter.h
View File

@ -51,7 +51,7 @@ public:
}
}
bool workDecimateCenter(qint16 *x, qint16 *y)
bool workDecimateCenter(qint32 *x, qint32 *y)
{
// insert sample into ring-buffer
m_samples[m_ptr][0] = *x;
@ -277,7 +277,7 @@ public:
m_ptr = mod33[m_ptr + 2 - 1];
}
void myDecimate(qint16 x1, qint16 y1, qint16 *x2, qint16 *y2)
void myDecimate(qint32 x1, qint32 y1, qint32 *x2, qint32 *y2)
{
static const qint16 mod33[38] = { 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};
@ -385,7 +385,7 @@ protected:
sample->setImag(qAcc >> HB_SHIFT);
}
void doFIR(qint16 *x, qint16 *y)
void doFIR(qint32 *x, qint32 *y)
{
// coefficents