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#pragma once
#include <cstddef>
#include <cstdint>
#include "ff.h"
#include "span.hpp"
#include "audio_element.hpp"
#include "codec.hpp"
namespace audio {
/*
* An audio element that accepts various kinds of encoded audio streams as
* input, and converts them to uncompressed PCM output.
*/
class AudioDecoder : public IAudioElement {
public:
AudioDecoder();
~AudioDecoder();
auto SetInputBuffer(MessageBufferHandle_t*) -> void;
auto SetOutputBuffer(MessageBufferHandle_t*) -> void;
auto ProcessStreamInfo(StreamInfo& info)
-> cpp::result<void, AudioProcessingError>;
auto ProcessChunk(cpp::span<std::byte>& chunk)
-> cpp::result<std::size_t, AudioProcessingError>;
auto ProcessIdle() -> cpp::result<void, AudioProcessingError>;
AudioDecoder(const AudioDecoder&) = delete;
AudioDecoder& operator=(const AudioDecoder&) = delete;
private:
std::unique_ptr<codecs::ICodec> current_codec_;
std::optional<StreamInfo> stream_info_;
std::byte* raw_chunk_buffer_;
cpp::span<std::byte> chunk_buffer_;
};
} // namespace audio
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