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59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
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//
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// DiskCopy42.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 02/06/2019.
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// Copyright © 2019 Thomas Harte. All rights reserved.
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//
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#ifndef DiskCopy42_hpp
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#define DiskCopy42_hpp
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#include "../DiskImage.hpp"
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#include "../../../FileHolder.hpp"
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namespace Storage {
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namespace Disk {
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/*!
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Provides a @c DiskImage containing a disk imaged by Apple's Disk Copy 4.2: sector contents
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(plus tag data) in either an Apple GCR or standard MFM encoding.
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*/
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class DiskCopy42: public DiskImage {
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public:
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/*!
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Construct a @c DiskCopy42 containing content from the file with name @c file_name.
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@throws Error::InvalidFormat if this file doesn't appear to be in Disk Copy 4.2 format.
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*/
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DiskCopy42(const std::string &file_name);
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// implemented to satisfy @c Disk
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HeadPosition get_maximum_head_position() override;
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int get_head_count() override;
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bool get_is_read_only() override;
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std::shared_ptr<::Storage::Disk::Track> get_track_at_position(::Storage::Disk::Track::Address address) override;
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private:
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Storage::FileHolder file_;
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enum class Encoding {
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GCR400,
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GCR800,
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MFM720,
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MFM1440
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} encoding_;
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uint8_t format_;
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std::vector<uint8_t> data_;
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std::vector<uint8_t> tags_;
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uint32_t checksum(const std::vector<uint8_t> &, size_t bytes_to_skip = 0);
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};
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}
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}
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#endif /* DiskCopy42_hpp */
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