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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>
64 lines
1.7 KiB
C++
64 lines
1.7 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 "AbstractStream.hpp"
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#include <memory>
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namespace audio
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{
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/**
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* @brief Proxy for the AbstractStream class allowing to wrap its methods
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* with custom logic.
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*/
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class StreamProxy : public AbstractStream
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{
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public:
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/**
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* @brief Construct a new Stream Proxy object
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*
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* @param wrappedStream - stream to wrap.
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*/
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explicit StreamProxy(std::shared_ptr<AbstractStream> wrappedStream) noexcept;
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// listener registration
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void registerListener(EventListener *listener) override;
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void unregisterListeners(EventListener *listener) override;
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/// push
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bool push(void *data, std::size_t dataSize) override;
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bool push(const Span &span) override;
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bool push() override;
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/// pop
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bool pop(Span &span) override;
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/// zero copy write
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bool reserve(Span &span) override;
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void commit() override;
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void release() override;
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/// zero copy read
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bool peek(Span &span) override;
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void consume() override;
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void unpeek() override;
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void reset() override;
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[[nodiscard]] auto getInputTraits() const noexcept -> Traits override;
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[[nodiscard]] auto getOutputTraits() const noexcept -> Traits override;
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[[nodiscard]] bool isEmpty() const noexcept override;
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[[nodiscard]] bool isFull() const noexcept override;
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protected:
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auto getWrappedStream() -> AbstractStream &;
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private:
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std::shared_ptr<AbstractStream> wrappedStream;
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};
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} // namespace audio
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