mirror of
https://github.com/TomHarte/CLK.git
synced 2024-08-25 15:28:58 +00:00
88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
//
|
|
// IPF.hpp
|
|
// Clock Signal
|
|
//
|
|
// Created by Thomas Harte on 25/12/2021.
|
|
// Copyright © 2021 Thomas Harte. All rights reserved.
|
|
//
|
|
|
|
#ifndef IPF_hpp
|
|
#define IPF_hpp
|
|
|
|
#include "../DiskImage.hpp"
|
|
#include "../../../FileHolder.hpp"
|
|
#include "../../../TargetPlatforms.hpp"
|
|
|
|
#include <string>
|
|
#include <map>
|
|
|
|
namespace Storage {
|
|
namespace Disk {
|
|
|
|
/*!
|
|
Provides a @c DiskImage containing an IPF, which is a mixed stream of raw flux windows and
|
|
unencoded MFM sections along with gap records that can be used to record write splices, all
|
|
of which is variably clocked (albeit not at flux transition resolution; as a result IPF files tend to be
|
|
close in size to more primitive formats).
|
|
*/
|
|
class IPF: public DiskImage, public TargetPlatform::TypeDistinguisher {
|
|
public:
|
|
/*!
|
|
Construct an @c IPF containing content from the file with name @c file_name.
|
|
|
|
@throws Storage::FileHolder::Error::CantOpen if this file can't be opened.
|
|
@throws Error::InvalidFormat if the file doesn't appear to contain an .HFE format image.
|
|
@throws Error::UnknownVersion if the file looks correct but is an unsupported version.
|
|
*/
|
|
IPF(const std::string &file_name);
|
|
|
|
// implemented to satisfy @c Disk
|
|
HeadPosition get_maximum_head_position() final;
|
|
int get_head_count() final;
|
|
std::shared_ptr<Track> get_track_at_position(Track::Address address) final;
|
|
|
|
private:
|
|
Storage::FileHolder file_;
|
|
uint16_t seek_track(Track::Address address);
|
|
|
|
struct TrackDescription {
|
|
long file_offset = 0;
|
|
enum class Density {
|
|
Unknown,
|
|
Noise,
|
|
Auto,
|
|
CopylockAmiga,
|
|
CopylockAmigaNew,
|
|
CopylockST,
|
|
SpeedlockAmiga,
|
|
OldSpeedlockAmiga,
|
|
AdamBrierleyAmiga,
|
|
AdamBrierleyDensityKeyAmiga,
|
|
|
|
Max = AdamBrierleyDensityKeyAmiga
|
|
} density = Density::Unknown;
|
|
uint32_t start_bit_pos = 0;
|
|
uint32_t data_bits = 0;
|
|
uint32_t gap_bits = 0;
|
|
uint32_t block_count;
|
|
bool has_fuzzy_bits = false;
|
|
};
|
|
|
|
Time bit_length(TrackDescription::Density, int block);
|
|
|
|
int head_count_;
|
|
int track_count_;
|
|
std::map<Track::Address, TrackDescription> tracks_;
|
|
bool is_sps_format_ = false;
|
|
|
|
TargetPlatform::Type target_platform_type() final {
|
|
return TargetPlatform::Type(platform_type_);
|
|
}
|
|
TargetPlatform::IntType platform_type_ = TargetPlatform::Amiga;
|
|
};
|
|
|
|
}
|
|
}
|
|
|
|
#endif /* IPF_hpp */
|