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e384c50580
Thereby opens a route for file format implementations such as that appearing for CPC DSK that create an in-memory copy and perform a full rewrite.
92 lines
2.1 KiB
C++
92 lines
2.1 KiB
C++
//
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// TZX.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 16/07/2017.
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// Copyright © 2017 Thomas Harte. All rights reserved.
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//
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#ifndef TZX_hpp
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#define TZX_hpp
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#include "../PulseQueuedTape.hpp"
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#include "../../FileHolder.hpp"
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namespace Storage {
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namespace Tape {
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/*!
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Provides a @c Tape containing a CSW tape image, which is a compressed 1-bit sampling.
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*/
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class TZX: public PulseQueuedTape {
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public:
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/*!
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Constructs a @c TZX containing content from the file with name @c file_name.
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@throws ErrorNotTZX if this file could not be opened and recognised as a valid TZX file.
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*/
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TZX(const char *file_name);
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enum {
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ErrorNotTZX
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};
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private:
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Storage::FileHolder file_;
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void virtual_reset();
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void get_next_pulses();
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bool current_level_;
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void get_standard_speed_data_block();
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void get_turbo_speed_data_block();
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void get_pure_tone_data_block();
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void get_pulse_sequence();
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void get_pure_data_block();
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void get_generalised_data_block();
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void get_pause();
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void get_hardware_type();
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void ignore_group_start();
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void ignore_group_end();
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void ignore_jump_to_block();
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void ignore_loop_start();
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void ignore_loop_end();
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void ignore_call_sequence();
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void ignore_return_from_sequence();
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void ignore_select_block();
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void ignore_text_description();
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void ignore_message_block();
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struct Data {
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unsigned int length_of_zero_bit_pulse;
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unsigned int length_of_one_bit_pulse;
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unsigned int number_of_bits_in_final_byte;
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unsigned int pause_after_block;
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long data_length;
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};
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struct DataBlock {
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unsigned int length_of_pilot_pulse;
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unsigned int length_of_sync_first_pulse;
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unsigned int length_of_sync_second_pulse;
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unsigned int length_of_pilot_tone;
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Data data;
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};
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void get_generalised_segment(uint32_t output_symbols, uint8_t max_pulses_per_symbol, uint8_t number_of_symbols, bool is_data);
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void get_data_block(const DataBlock &);
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void get_data(const Data &);
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void post_pulse(unsigned int length);
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void post_gap(unsigned int milliseconds);
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void post_pulse(const Storage::Time &time);
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};
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}
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}
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#endif /* TZX_hpp */
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