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/*
* Copyright 2023 jacqueline <me@jacqueline.id.au>
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#pragma once
#include <cstddef>
#include <cstdint>
#include <future>
#include <memory>
#include <string>
#include "ff.h"
#include "freertos/portmacro.h"
#include "audio_source.hpp"
#include "codec.hpp"
#include "future_fetcher.hpp"
#include "tag_parser.hpp"
#include "types.hpp"
namespace audio {
/*
* Audio source that fetches data from a FatFs (or exfat i guess) filesystem.
*
* All public methods are safe to call from any task.
*/
class FatfsAudioInput : public IAudioSource {
public:
explicit FatfsAudioInput(database::ITagParser& tag_parser);
~FatfsAudioInput();
/*
* Immediately cease reading any current source, and begin reading from the
* given file path.
*/
auto SetPath(std::future<std::optional<std::pmr::string>>) -> void;
auto SetPath(const std::pmr::string&) -> void;
auto SetPath() -> void;
auto HasNewStream() -> bool override;
auto NextStream() -> std::shared_ptr<codecs::IStream> override;
FatfsAudioInput(const FatfsAudioInput&) = delete;
FatfsAudioInput& operator=(const FatfsAudioInput&) = delete;
private:
auto OpenFile(const std::pmr::string& path) -> bool;
auto ContainerToStreamType(database::Container)
-> std::optional<codecs::StreamType>;
database::ITagParser& tag_parser_;
std::mutex new_stream_mutex_;
std::shared_ptr<codecs::IStream> new_stream_;
SemaphoreHandle_t has_new_stream_;
std::unique_ptr<database::FutureFetcher<std::optional<std::pmr::string>>>
pending_path_;
};
} // namespace audio
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