mirror of https://github.com/mgba-emu/mgba.git
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
/* Copyright (c) 2013-2024 Jeffrey Pfau
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef M_INTERPOLATOR_H
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#define M_INTERPOLATOR_H
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#include <mgba-util/common.h>
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CXX_GUARD_START
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enum mInterpolatorType {
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mINTERPOLATOR_SINC,
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mINTERPOLATOR_COSINE,
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};
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struct mInterpolationData {
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int16_t (*at)(int index, const void* context);
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void* context;
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};
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struct mInterpolator {
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int16_t (*interpolate)(const struct mInterpolator* interp, const struct mInterpolationData* data, double time, double sampleStep);
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};
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struct mInterpolatorSinc {
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struct mInterpolator d;
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unsigned resolution;
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unsigned width;
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double* sincLut;
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double* windowLut;
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};
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struct mInterpolatorCosine {
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struct mInterpolator d;
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unsigned resolution;
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double* lut;
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};
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void mInterpolatorSincInit(struct mInterpolatorSinc* interp, unsigned resolution, unsigned width);
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void mInterpolatorSincDeinit(struct mInterpolatorSinc* interp);
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void mInterpolatorCosineInit(struct mInterpolatorCosine* interp, unsigned resolution);
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void mInterpolatorCosineDeinit(struct mInterpolatorCosine* interp);
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CXX_GUARD_END
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#endif
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