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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 <memory>
#include <vector>
#include "chunk.hpp"
#include "ff.h"
#include "span.hpp"
#include "audio_element.hpp"
#include "codec.hpp"
#include "stream_info.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:
AudioDecoder();
~AudioDecoder();
auto Process(const InputStream& input, OutputStream* output) -> void;
AudioDecoder(const AudioDecoder&) = delete;
AudioDecoder& operator=(const AudioDecoder&) = delete;
private:
std::unique_ptr<codecs::ICodec> current_codec_;
std::optional<StreamInfo::Encoded> current_input_format_;
std::optional<StreamInfo::Format> current_output_format_;
std::optional<std::size_t> duration_seconds_from_decoder_;
std::optional<std::size_t> seek_to_sample_;
bool has_prepared_output_;
bool has_samples_to_send_;
bool has_input_remaining_;
auto ProcessStreamInfo(const StreamInfo& info) -> bool;
};
} // namespace audio
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