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/*
* Copyright 2023 jacqueline <me@jacqueline.id.au>
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#pragma once
#include <stdint.h>
#include <cstddef>
#include <cstdint>
#include <memory>
#include "codec.hpp"
#include "ff.h"
#include "audio/audio_source.hpp"
namespace audio {
/*
* Generates an infinitely long sine wave of a specified frequency.
*/
class SineSource : public codecs::IStream {
public:
SineSource(uint32_t frequency);
auto Read(std::span<std::byte> dest) -> ssize_t override;
auto CanSeek() -> bool override;
auto SeekTo(int64_t destination, SeekFrom from) -> void override;
auto CurrentPosition() -> int64_t override;
auto Size() -> std::optional<int64_t> override;
SineSource(const SineSource&) = delete;
SineSource& operator=(const SineSource&) = delete;
private:
double step_;
double increment_;
};
} // namespace audio
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