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audio_core: Switch to a faster interpolation technique

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This commit is contained in:
FearlessTobi
2020-01-16 18:47:36 +01:00
parent a167da4278
commit e3cad7d49e
2 changed files with 159 additions and 48 deletions
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9
src/audio_core/algorithm/interpolate.h
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@ -6,19 +6,12 @@
#include <array>
#include <vector>
#include "audio_core/algorithm/filter.h"
#include "common/common_types.h"
namespace AudioCore {
struct InterpolationState {
static constexpr std::size_t lanczos_taps = 4;
static constexpr std::size_t history_size = lanczos_taps * 2 - 1;
double current_ratio = 0.0;
CascadingFilter nyquist;
std::array<std::array<s16, 2>, history_size> history = {};
double position = 0;
int fraction = 0;
};
/// Interpolates input signal to produce output signal.