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ece6a51e5b
Add voice transcoding during phone call with two basic transforms: - sample rate downscaling by a factor of 2 with a decimator - sample rate upscaling by a factor of 2 with an interpolator (no low-pass filter) Signed-off-by: Marcin Smoczyński <smoczynski.marcin@gmail.com>
40 lines
1.3 KiB
C++
40 lines
1.3 KiB
C++
// Copyright (c) 2017-2021, Mudita Sp. z.o.o. All rights reserved.
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// For licensing, see https://github.com/mudita/MuditaOS/LICENSE.md
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#pragma once
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#include "Transform.hpp"
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#include <Audio/AudioFormat.hpp>
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#include <memory>
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#include <vector>
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namespace audio::transcode
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{
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/**
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* @brief Allows to execute a set of transforms to be performed in a chain.
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*/
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class TransformComposite : public Transform
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{
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public:
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/**
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* @brief Construct a new Transform Composite object
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*
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* @param children - transforms to be executed on each transform call.
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*/
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TransformComposite(std::vector<std::shared_ptr<Transform>> children);
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auto transform(const Span &span, const Span &transformSpace) const -> Span override;
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auto validateInputFormat(const audio::AudioFormat &inputFormat) const noexcept -> bool override;
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auto transformFormat(const audio::AudioFormat &inputFormat) const noexcept -> audio::AudioFormat override;
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auto transformBlockSize(std::size_t blockSize) const noexcept -> std::size_t override;
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auto transformBlockSizeInverted(std::size_t blockSize) const noexcept -> std::size_t override;
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private:
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std::vector<std::shared_ptr<Transform>> children;
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};
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} // namespace audio::transcode
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