#include "audio_filter.h"
#include "audio_buffers.h"
+#include "maths_util.h"
#include "util.h"
#include <cmath>
using std::shared_ptr;
-/** @return array of floats which the caller must destroy with delete[] */
-float *
+std::vector<float>
AudioFilter::sinc_blackman (float cutoff, bool invert) const
{
- float* ir = new float[_M + 1];
+ auto ir = std::vector<float>();
+ ir.reserve(_M + 1);
/* Impulse response */
}
-AudioFilter::~AudioFilter ()
-{
- delete[] _ir;
-}
-
-
shared_ptr<AudioBuffers>
AudioFilter::run (shared_ptr<const AudioBuffers> in)
{
auto out = make_shared<AudioBuffers>(in->channels(), in->frames());
if (!_tail) {
- _tail.reset (new AudioBuffers (in->channels(), _M + 1));
+ _tail = make_shared<AudioBuffers>(in->channels(), _M + 1);
_tail->make_silent ();
}
auto lpf = sinc_blackman (lower, false);
auto hpf = sinc_blackman (higher, true);
- delete[] _ir;
- _ir = new float[_M + 1];
+ _ir.reserve (_M + 1);
for (int i = 0; i <= _M; ++i) {
_ir[i] = lpf[i] + hpf[i];
}
- delete[] lpf;
- delete[] hpf;
-
/* We now have a band-stop, so invert for band-pass */
for (int i = 0; i <= _M; ++i) {
_ir[i] = -_ir[i];