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138 lines
2.5 KiB
C++
138 lines
2.5 KiB
C++
//
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// Tape.cpp
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// Clock Signal
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//
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// Created by Thomas Harte on 18/01/2016.
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// Copyright © 2016 Thomas Harte. All rights reserved.
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//
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#include "Tape.hpp"
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#include "../../NumberTheory/Factors.hpp"
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using namespace Storage::Tape;
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#pragma mark - Lifecycle
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TapePlayer::TapePlayer(unsigned int input_clock_rate) :
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TimedEventLoop(input_clock_rate)
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{}
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#pragma mark - Seeking
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void Storage::Tape::Tape::seek(Time &seek_time)
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{
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current_time_.set_zero();
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next_time_.set_zero();
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while(next_time_ < seek_time) get_next_pulse();
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}
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void Storage::Tape::Tape::reset()
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{
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current_time_.set_zero();
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next_time_.set_zero();
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virtual_reset();
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}
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Tape::Pulse Tape::get_next_pulse()
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{
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Tape::Pulse pulse = virtual_get_next_pulse();
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current_time_ = next_time_;
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next_time_ += pulse.length;
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return pulse;
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}
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#pragma mark - Player
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void TapePlayer::set_tape(std::shared_ptr<Storage::Tape::Tape> tape)
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{
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tape_ = tape;
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reset_timer();
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get_next_pulse();
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}
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std::shared_ptr<Storage::Tape::Tape> TapePlayer::get_tape()
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{
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return tape_;
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}
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bool TapePlayer::has_tape()
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{
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return (bool)tape_;
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}
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void TapePlayer::get_next_pulse()
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{
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// get the new pulse
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if(tape_)
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current_pulse_ = tape_->get_next_pulse();
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else
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{
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current_pulse_.length.length = 1;
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current_pulse_.length.clock_rate = 1;
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current_pulse_.type = Tape::Pulse::Zero;
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}
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set_next_event_time_interval(current_pulse_.length);
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}
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void TapePlayer::run_for_cycles(int number_of_cycles)
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{
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if(has_tape())
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{
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TimedEventLoop::run_for_cycles(number_of_cycles);
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}
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}
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void TapePlayer::run_for_input_pulse()
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{
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jump_to_next_event();
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}
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void TapePlayer::process_next_event()
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{
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process_input_pulse(current_pulse_);
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get_next_pulse();
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}
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#pragma mark - Binary Player
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BinaryTapePlayer::BinaryTapePlayer(unsigned int input_clock_rate) :
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TapePlayer(input_clock_rate), motor_is_running_(false)
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{}
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void BinaryTapePlayer::set_motor_control(bool enabled)
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{
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motor_is_running_ = enabled;
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}
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void BinaryTapePlayer::set_tape_output(bool set)
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{
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// TODO
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}
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bool BinaryTapePlayer::get_input()
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{
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return input_level_;
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}
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void BinaryTapePlayer::run_for_cycles(int number_of_cycles)
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{
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if(motor_is_running_) TapePlayer::run_for_cycles(number_of_cycles);
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}
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void BinaryTapePlayer::set_delegate(Delegate *delegate)
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{
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delegate_ = delegate;
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}
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void BinaryTapePlayer::process_input_pulse(Storage::Tape::Tape::Pulse pulse)
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{
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bool new_input_level = pulse.type == Tape::Pulse::Low;
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if(input_level_ != new_input_level)
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{
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input_level_ = new_input_level;
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if(delegate_) delegate_->tape_did_change_input(this);
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}
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}
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