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47 lines
1.2 KiB
47 lines
1.2 KiB
#pragma once
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#include <cstdint>
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#include <memory>
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#include "audio_element.hpp"
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#include "chunk.hpp"
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#include "result.hpp"
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#include "dac.hpp"
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#include "gpio_expander.hpp"
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namespace audio {
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class I2SAudioOutput : public IAudioElement {
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public:
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enum Error { DAC_CONFIG, I2S_CONFIG, STREAM_INIT };
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static auto create(drivers::GpioExpander* expander)
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-> cpp::result<std::shared_ptr<I2SAudioOutput>, Error>;
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I2SAudioOutput(drivers::GpioExpander* expander,
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std::unique_ptr<drivers::AudioDac> dac);
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~I2SAudioOutput();
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auto HasUnprocessedInput() -> bool override;
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auto IsOverBuffered() -> bool override;
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auto ProcessStreamInfo(const StreamInfo& info) -> void override;
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auto ProcessChunk(const cpp::span<std::byte>& chunk) -> void override;
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auto ProcessEndOfStream() -> void override;
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auto ProcessLogStatus() -> void override;
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auto Process() -> void override;
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I2SAudioOutput(const I2SAudioOutput&) = delete;
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I2SAudioOutput& operator=(const I2SAudioOutput&) = delete;
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private:
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auto SetVolume(uint8_t volume) -> void;
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drivers::GpioExpander* expander_;
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std::unique_ptr<drivers::AudioDac> dac_;
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std::optional<ChunkReader> chunk_reader_;
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cpp::span<std::byte> latest_chunk_;
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};
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} // namespace audio
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