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57 lines
1.2 KiB
57 lines
1.2 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 <cstddef>
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#include <cstdint>
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#include <optional>
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#include <string>
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#include <utility>
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#include "mad.h"
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#include "sample.hpp"
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#include "source_buffer.hpp"
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#include "span.hpp"
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#include "codec.hpp"
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namespace codecs {
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class MadMp3Decoder : public ICodec {
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public:
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MadMp3Decoder();
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~MadMp3Decoder();
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auto OpenStream(std::shared_ptr<IStream> input,uint32_t offset)
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-> cpp::result<OutputFormat, Error> override;
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auto DecodeTo(cpp::span<sample::Sample> destination)
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-> cpp::result<OutputInfo, Error> override;
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auto SeekTo(std::size_t target_sample) -> cpp::result<void, Error> override;
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MadMp3Decoder(const MadMp3Decoder&) = delete;
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MadMp3Decoder& operator=(const MadMp3Decoder&) = delete;
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private:
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auto SkipID3Tags(IStream& stream) -> void;
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auto GetVbrLength(const mad_header& header) -> std::optional<uint32_t>;
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auto GetBytesUsed() -> std::size_t;
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std::shared_ptr<IStream> input_;
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SourceBuffer buffer_;
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std::unique_ptr<mad_stream> stream_;
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std::unique_ptr<mad_frame> frame_;
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std::unique_ptr<mad_synth> synth_;
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int current_sample_;
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bool is_eof_;
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bool is_eos_;
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};
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} // namespace codecs
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