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58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
//
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// WOZ.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 23/04/2018.
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// Copyright 2018 Thomas Harte. All rights reserved.
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//
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#pragma once
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#include "../DiskImage.hpp"
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#include "../../../FileHolder.hpp"
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#include "../../../../Numeric/CRC.hpp"
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#include <string>
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namespace Storage::Disk {
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/*!
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Provides a @c DiskImage containing a WOZ: a bit stream representation of a floppy.
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*/
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class WOZ: public DiskImage {
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public:
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WOZ(const std::string &file_name);
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// Implemented to satisfy @c DiskImage.
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HeadPosition get_maximum_head_position() final;
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int get_head_count() final;
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std::shared_ptr<Track> get_track_at_position(Track::Address address) final;
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void set_tracks(const std::map<Track::Address, std::shared_ptr<Track>> &tracks) final;
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bool get_is_read_only() final;
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bool tracks_differ(Track::Address, Track::Address) final;
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private:
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Storage::FileHolder file_;
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enum class Type {
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WOZ1, WOZ2
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} type_ = Type::WOZ1;
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bool is_read_only_ = false;
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bool is_3_5_disk_ = false;
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uint8_t track_map_[160];
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long tracks_offset_ = -1;
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std::vector<uint8_t> post_crc_contents_;
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CRC::CRC32 crc_generator;
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/*!
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Gets the in-file offset of a track.
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@returns The offset within the file of the track at @c address or @c NoSuchTrack if
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the track does not exit.
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*/
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long file_offset(Track::Address address);
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constexpr static long NoSuchTrack = 0; // This is an offset a track definitely can't lie at.
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};
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}
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