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/*
* Copyright 2023 jacqueline <me@jacqueline.id.au>
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#pragma once
#include <atomic>
#include <cstdint>
#include <deque>
#include <memory>
#include <vector>
#include "freertos/FreeRTOS.h"
#include "chunk.hpp"
#include "freertos/message_buffer.h"
#include "freertos/portmacro.h"
#include "result.hpp"
#include "span.hpp"
#include "stream_buffer.hpp"
#include "stream_event.hpp"
#include "stream_info.hpp"
#include "types.hpp"
namespace audio {
static const size_t kEventQueueSize = 8;
/*
* One indepedentent part of an audio pipeline. Each element has an input and
* output message stream, and is responsible for taking data from the input
* stream, applying some kind of transformation to it, then sending the result
* out via the output stream. All communication with an element should be done
* over these streams, as an element's methods are only safe to call from the
* task that owns it.
*
* Each element implementation will have its input stream automatically parsed
* by its owning task, and its various Process* methods will be invoked
* accordingly. Element implementations are responsible for managing their own
* writes to their output streams.
*/
class IAudioElement {
public:
IAudioElement() {}
virtual ~IAudioElement() {}
virtual auto NeedsToProcess() const -> bool = 0;
virtual auto Process(const std::vector<InputStream>& inputs,
OutputStream* output) -> void = 0;
};
} // namespace audio
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