mirror of
https://github.com/TomHarte/CLK.git
synced 2024-08-16 16:28:59 +00:00
80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
//
|
|
// MacintoshIMG.hpp
|
|
// Clock Signal
|
|
//
|
|
// Created by Thomas Harte on 02/06/2019.
|
|
// Copyright © 2019 Thomas Harte. All rights reserved.
|
|
//
|
|
|
|
#ifndef MacintoshIMG_hpp
|
|
#define MacintoshIMG_hpp
|
|
|
|
#include "../DiskImage.hpp"
|
|
#include "../../../FileHolder.hpp"
|
|
|
|
namespace Storage {
|
|
namespace Disk {
|
|
|
|
/*!
|
|
Provides a @c DiskImage containing either:
|
|
|
|
* a disk imaged by Apple's Disk Copy 4.2: sector contents (optionally plus tag data),
|
|
in either an Apple GCR or standard MFM encoding; or
|
|
* a raw sector dump of a Macintosh GCR disk.
|
|
*/
|
|
class MacintoshIMG: public DiskImage {
|
|
public:
|
|
/*!
|
|
Construct a @c MacintoshIMG containing content from the file with name @c file_name.
|
|
|
|
@throws Error::InvalidFormat if this file doesn't appear to be in Disk Copy 4.2 format.
|
|
*/
|
|
MacintoshIMG(const std::string &file_name);
|
|
|
|
enum class FixedType {
|
|
GCR
|
|
};
|
|
/*!
|
|
Constructs a @c MacintoshIMG without attempting to autodetect whether this is a raw
|
|
image or a Disk Copy 4.2 image; if GCR is specified and the file size checks out then
|
|
it is accepted as a GCR image.
|
|
|
|
If @c offset and @c length are specified and non-zero, only that portion of the file
|
|
will be modified.
|
|
*/
|
|
MacintoshIMG(const std::string &file_name, FixedType type, size_t offset = 0, off_t length = -1);
|
|
|
|
// implemented to satisfy @c Disk
|
|
HeadPosition get_maximum_head_position() final;
|
|
int get_head_count() final;
|
|
bool get_is_read_only() final;
|
|
|
|
std::shared_ptr<::Storage::Disk::Track> get_track_at_position(::Storage::Disk::Track::Address address) final;
|
|
void set_tracks(const std::map<Track::Address, std::shared_ptr<Track>> &tracks) final;
|
|
|
|
private:
|
|
Storage::FileHolder file_;
|
|
|
|
enum class Encoding {
|
|
GCR400,
|
|
GCR800,
|
|
MFM720,
|
|
MFM1440
|
|
} encoding_;
|
|
uint8_t format_;
|
|
|
|
std::vector<uint8_t> data_;
|
|
std::vector<uint8_t> tags_;
|
|
bool is_diskCopy_file_ = false;
|
|
std::mutex buffer_mutex_;
|
|
|
|
uint32_t checksum(const std::vector<uint8_t> &, size_t bytes_to_skip = 0);
|
|
void construct_raw_gcr(size_t offset, off_t length);
|
|
long raw_offset_ = 0;
|
|
};
|
|
|
|
}
|
|
}
|
|
|
|
#endif /* DiskCopy42_hpp */
|