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76 lines
1.4 KiB
C++
76 lines
1.4 KiB
C++
//
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// CAS.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 25/11/2017.
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// Copyright © 2017 Thomas Harte. All rights reserved.
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//
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#ifndef CAS_hpp
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#define CAS_hpp
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#include "../Tape.hpp"
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#include "../../FileHolder.hpp"
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#include <cstdint>
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#include <vector>
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namespace Storage {
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namespace Tape {
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/*!
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Provides a @c Tape containing a CAS tape image, which is an MSX byte stream.
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*/
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class CAS: public Tape {
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public:
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/*!
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Constructs a @c CAS containing content from the file with name @c file_name.
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@throws ErrorNotCAS if this file could not be opened and recognised as a valid CAS file.
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*/
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CAS(const char *file_name);
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enum {
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ErrorNotCAS
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};
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// implemented to satisfy @c Tape
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bool is_at_end();
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private:
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void virtual_reset();
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Pulse virtual_get_next_pulse();
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// Helper for populating the file list, below.
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void get_next(Storage::FileHolder &file, uint8_t (&buffer)[8], std::size_t quantity);
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// Storage for the array of files to transcribe into audio.
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enum class Block {
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BSAVE,
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CSAVE,
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ASCII
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};
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struct File {
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Block type;
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std::vector<std::vector<std::uint8_t>> chunks;
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};
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std::vector<File> files_;
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// Tracker for active state within the file list.
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std::size_t file_pointer_ = 0;
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std::size_t chunk_pointer_ = 0;
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enum class Phase {
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Header,
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Bytes,
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Gap,
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EndOfFile
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} phase_ = Phase::Header;
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std::size_t distance_into_phase_ = 0;
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std::size_t distance_into_bit_ = 0;
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};
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}
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}
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#endif /* CAS_hpp */
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