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CLK/Storage/Tape/Formats/CSW.hpp
2017-11-12 16:42:53 -05:00

66 lines
1.1 KiB
C++

//
// CSW.hpp
// Clock Signal
//
// Created by Thomas Harte on 10/07/2017.
// Copyright © 2017 Thomas Harte. All rights reserved.
//
#ifndef CSW_hpp
#define CSW_hpp
#include "../Tape.hpp"
#include "../../FileHolder.hpp"
#include <zlib.h>
#include <vector>
namespace Storage {
namespace Tape {
/*!
Provides a @c Tape containing a CSW tape image, which is a compressed 1-bit sampling.
*/
class CSW: public Tape {
public:
/*!
Constructs a @c CSW containing content from the file with name @c file_name.
@throws ErrorNotCSW if this file could not be opened and recognised as a valid CSW file.
*/
CSW(const char *file_name);
enum {
ErrorNotCSW
};
// implemented to satisfy @c Tape
bool is_at_end();
private:
Storage::FileHolder file_;
void virtual_reset();
Pulse virtual_get_next_pulse();
Pulse pulse_;
enum class CompressionType {
RLE,
ZRLE
} compression_type_;
uint8_t get_next_byte();
uint32_t get_next_int32le();
void invert_pulse();
std::vector<uint8_t> source_data_;
std::size_t source_data_pointer_;
long rle_start_;
};
}
}
#endif /* CSW_hpp */