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CLK/Storage/Tape/Formats/CSW.hpp
2019-08-25 15:09:04 -04:00

69 lines
1.3 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 <string>
#include <vector>
#include <zlib.h>
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 std::string &file_name);
enum class CompressionType {
RLE,
ZRLE
};
/*!
Constructs a @c CSW containing content as specified. Does not throw.
*/
CSW(const std::vector<uint8_t> &&data, CompressionType compression_type, bool initial_level, uint32_t sampling_rate);
enum {
ErrorNotCSW
};
// implemented to satisfy @c Tape
bool is_at_end();
private:
void virtual_reset();
Pulse virtual_get_next_pulse();
Pulse pulse_;
CompressionType 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_;
};
}
}
#endif /* CSW_hpp */