/* * Copyright 2023 jacqueline <me@jacqueline.id.au> * * SPDX-License-Identifier: GPL-3.0-only */ #pragma once #include <cstddef> #include <cstdint> #include <optional> #include <string> #include <utility> #include "mad.h" #include "sample.hpp" #include "source_buffer.hpp" #include "span.hpp" #include "codec.hpp" namespace codecs { class MadMp3Decoder : public ICodec { public: MadMp3Decoder(); ~MadMp3Decoder(); auto OpenStream(std::shared_ptr<IStream> input) -> cpp::result<OutputFormat, Error> override; auto DecodeTo(cpp::span<sample::Sample> destination) -> cpp::result<OutputInfo, Error> override; auto SeekTo(std::size_t target_sample) -> cpp::result<void, Error> override; MadMp3Decoder(const MadMp3Decoder&) = delete; MadMp3Decoder& operator=(const MadMp3Decoder&) = delete; private: auto SkipID3Tags(IStream &stream) -> void; auto GetVbrLength(const mad_header& header) -> std::optional<uint32_t>; auto GetBytesUsed() -> std::size_t; std::shared_ptr<IStream> input_; SourceBuffer buffer_; mad_stream stream_; mad_frame frame_; mad_synth synth_; int current_sample_; bool is_eof_; bool is_eos_; }; } // namespace codecs