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294e09f275
At least for the purpose of being communicative. I doubt there's much to gain in terms of compiler output — the DiskImageHolder can avoid some virtual lookups but nothing else leaps out.
79 lines
1.9 KiB
C++
79 lines
1.9 KiB
C++
//
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// CPCDSK.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 05/08/2017.
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// Copyright 2017 Thomas Harte. All rights reserved.
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//
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#ifndef CPCDSK_hpp
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#define CPCDSK_hpp
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#include "../DiskImage.hpp"
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#include "../../../FileHolder.hpp"
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#include "../../Encodings/MFM/Sector.hpp"
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#include <string>
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#include <vector>
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namespace Storage {
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namespace Disk {
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/*!
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Provides a @c Disk containing an Amstrad CPC-type disk image: some arrangement of sectors with status bits.
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*/
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class CPCDSK: public DiskImage {
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public:
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/*!
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Construct an @c AcornADF containing content from the file with name @c file_name.
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@throws Storage::FileHolder::Error::CantOpen if this file can't be opened.
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@throws Error::InvalidFormat if the file doesn't appear to contain an Acorn .ADF format image.
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*/
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CPCDSK(const std::string &file_name);
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// implemented to satisfy @c Disk
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HeadPosition get_maximum_head_position() final;
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int get_head_count() final;
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bool get_is_read_only() final;
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void set_tracks(const std::map<Track::Address, std::shared_ptr<Track>> &tracks) final;
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std::shared_ptr<::Storage::Disk::Track> get_track_at_position(::Storage::Disk::Track::Address address) final;
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private:
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struct Track {
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uint8_t track;
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uint8_t side;
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enum class DataRate {
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Unknown, SingleOrDoubleDensity, HighDensity, ExtendedDensity
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} data_rate;
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enum class DataEncoding {
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Unknown, FM, MFM
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} data_encoding;
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uint8_t sector_length;
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uint8_t gap3_length;
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uint8_t filler_byte;
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struct Sector: public ::Storage::Encodings::MFM::Sector {
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uint8_t fdc_status1;
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uint8_t fdc_status2;
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};
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std::vector<Sector> sectors;
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};
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std::string file_name_;
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std::vector<std::unique_ptr<Track>> tracks_;
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std::size_t index_for_track(::Storage::Disk::Track::Address address);
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int head_count_;
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int head_position_count_;
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bool is_extended_;
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bool is_read_only_;
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};
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}
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}
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#endif /* CPCDSK_hpp */
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