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