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66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
/*
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* AudioResampler.h - wrapper around libsamplerate
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*
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* Copyright (c) 2023 saker <sakertooth@gmail.com>
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*
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* This file is part of LMMS - https://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef LMMS_AUDIO_RESAMPLER_H
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#define LMMS_AUDIO_RESAMPLER_H
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#include <samplerate.h>
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#include "lmms_export.h"
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namespace lmms {
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class LMMS_EXPORT AudioResampler
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{
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public:
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struct ProcessResult
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{
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int error;
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long inputFramesUsed;
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long outputFramesGenerated;
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};
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AudioResampler(int interpolationMode, int channels);
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AudioResampler(const AudioResampler&) = delete;
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AudioResampler(AudioResampler&&) = delete;
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~AudioResampler();
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AudioResampler& operator=(const AudioResampler&) = delete;
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AudioResampler& operator=(AudioResampler&&) = delete;
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auto resample(const float* in, long inputFrames, float* out, long outputFrames, double ratio) -> ProcessResult;
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auto interpolationMode() const -> int { return m_interpolationMode; }
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auto channels() const -> int { return m_channels; }
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void setRatio(double ratio);
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private:
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int m_interpolationMode = -1;
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int m_channels = 0;
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int m_error = 0;
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SRC_STATE* m_state = nullptr;
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};
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} // namespace lmms
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#endif // LMMS_AUDIO_RESAMPLER_H
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