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moved template argument RATE to constructor argument rate

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Ahmet Inan 2020-01-13 12:11:34 +01:00
commit 7efb7d2f0f
1 changed files with 6 additions and 5 deletions
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11
resampler.hh
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@ -13,19 +13,20 @@ Copyright 2018 Ahmet Inan <inan@aicodix.de>
namespace DSP {
template <typename TYPE, int RATE, int TAPS, int OVER>
template <typename TYPE, int TAPS, int OVER>
class Resampler
{
typedef DSP::UniformNaturalCubicSpline<TAPS * OVER, TYPE, TYPE> spline_type;
spline_type lpf;
TYPE rate;
public:
Resampler(TYPE cutoff, TYPE alpha)
Resampler(TYPE rate, TYPE cutoff, TYPE alpha) : rate(rate)
{
TYPE tmp[TAPS * OVER];
DSP::Kaiser<TYPE> window(alpha);
for (int n = 0; n < TAPS * OVER; ++n) {
TYPE x = TYPE(n) / TYPE(OVER) - TYPE(TAPS - 1) / TYPE(2);
TYPE y = TYPE(2) * cutoff / TYPE(RATE) * sinc(TYPE(2) * cutoff / TYPE(RATE) * x);
TYPE y = TYPE(2) * cutoff / rate * sinc(TYPE(2) * cutoff / rate * x);
tmp[n] = y * window(n, TAPS * OVER);
}
lpf = spline_type(tmp, 0, 1.0 / OVER);
@ -33,8 +34,8 @@ public:
template <typename IO>
void operator ()(IO *output, IO *input, TYPE diff, int samples, int stride = 1)
{
TYPE ratio = (RATE + diff) / RATE;
TYPE recip = RATE / (RATE + diff);
TYPE ratio = (rate + diff) / rate;
TYPE recip = rate / (rate + diff);
for (int i = 0; i < samples - TAPS; ++i) {
IO sum = 0;
int s0 = nearbyint(i * ratio);