diff options
author | Kelebek1 <eeeedddccc@hotmail.co.uk> | 2022-07-17 00:48:45 +0200 |
---|---|---|
committer | Kelebek1 <eeeedddccc@hotmail.co.uk> | 2022-07-22 02:11:32 +0200 |
commit | 458da8a94877677f086f06cdeecf959ec4283a33 (patch) | |
tree | 583166d77602ad90a0d552f37de8729ad80fd6c1 /src/audio_core/algorithm/filter.h | |
parent | Merge pull request #8598 from Link4565/recv-dontwait (diff) | |
download | yuzu-458da8a94877677f086f06cdeecf959ec4283a33.tar yuzu-458da8a94877677f086f06cdeecf959ec4283a33.tar.gz yuzu-458da8a94877677f086f06cdeecf959ec4283a33.tar.bz2 yuzu-458da8a94877677f086f06cdeecf959ec4283a33.tar.lz yuzu-458da8a94877677f086f06cdeecf959ec4283a33.tar.xz yuzu-458da8a94877677f086f06cdeecf959ec4283a33.tar.zst yuzu-458da8a94877677f086f06cdeecf959ec4283a33.zip |
Diffstat (limited to 'src/audio_core/algorithm/filter.h')
-rw-r--r-- | src/audio_core/algorithm/filter.h | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/src/audio_core/algorithm/filter.h b/src/audio_core/algorithm/filter.h deleted file mode 100644 index 2586f0079..000000000 --- a/src/audio_core/algorithm/filter.h +++ /dev/null @@ -1,61 +0,0 @@ -// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project -// SPDX-License-Identifier: GPL-2.0-or-later - -#pragma once - -#include <array> -#include <vector> -#include "common/common_types.h" - -namespace AudioCore { - -/// Digital biquad filter: -/// -/// b0 + b1 z^-1 + b2 z^-2 -/// H(z) = ------------------------ -/// a0 + a1 z^-1 + b2 z^-2 -class Filter { -public: - /// Creates a low-pass filter. - /// @param cutoff Determines the cutoff frequency. A value from 0.0 to 1.0. - /// @param Q Determines the quality factor of this filter. - static Filter LowPass(double cutoff, double Q = 0.7071); - - /// Passthrough filter. - Filter(); - - Filter(double a0_, double a1_, double a2_, double b0_, double b1_, double b2_); - - void Process(std::vector<s16>& signal); - -private: - static constexpr std::size_t channel_count = 2; - - /// Coefficients are in normalized form (a0 = 1.0). - double a1, a2, b0, b1, b2; - /// Input History - std::array<std::array<double, channel_count>, 3> in; - /// Output History - std::array<std::array<double, channel_count>, 3> out; -}; - -/// Cascade filters to build up higher-order filters from lower-order ones. -class CascadingFilter { -public: - /// Creates a cascading low-pass filter. - /// @param cutoff Determines the cutoff frequency. A value from 0.0 to 1.0. - /// @param cascade_size Number of biquads in cascade. - static CascadingFilter LowPass(double cutoff, std::size_t cascade_size); - - /// Passthrough. - CascadingFilter(); - - explicit CascadingFilter(std::vector<Filter> filters_); - - void Process(std::vector<s16>& signal); - -private: - std::vector<Filter> filters; -}; - -} // namespace AudioCore |