ebdae19fd2
This makes clang-format useful on those. Also add a bunch of forgotten transitive includes, which otherwise prevented compilation.
42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
// Copyright 2016 Citra Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#pragma once
|
|
|
|
#include <array>
|
|
#include <vector>
|
|
#include "common/common_types.h"
|
|
|
|
namespace AudioInterp {
|
|
|
|
/// A variable length buffer of signed PCM16 stereo samples.
|
|
using StereoBuffer16 = std::vector<std::array<s16, 2>>;
|
|
|
|
struct State {
|
|
// Two historical samples.
|
|
std::array<s16, 2> xn1 = {}; ///< x[n-1]
|
|
std::array<s16, 2> xn2 = {}; ///< x[n-2]
|
|
};
|
|
|
|
/**
|
|
* No interpolation. This is equivalent to a zero-order hold. There is a two-sample predelay.
|
|
* @param input Input buffer.
|
|
* @param rate_multiplier Stretch factor. Must be a positive non-zero value.
|
|
* rate_multiplier > 1.0 performs decimation and rate_multipler < 1.0
|
|
* performs upsampling.
|
|
* @return The resampled audio buffer.
|
|
*/
|
|
StereoBuffer16 None(State& state, const StereoBuffer16& input, float rate_multiplier);
|
|
|
|
/**
|
|
* Linear interpolation. This is equivalent to a first-order hold. There is a two-sample predelay.
|
|
* @param input Input buffer.
|
|
* @param rate_multiplier Stretch factor. Must be a positive non-zero value.
|
|
* rate_multiplier > 1.0 performs decimation and rate_multipler < 1.0
|
|
* performs upsampling.
|
|
* @return The resampled audio buffer.
|
|
*/
|
|
StereoBuffer16 Linear(State& state, const StereoBuffer16& input, float rate_multiplier);
|
|
|
|
} // namespace AudioInterp
|