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68 lines
1.2 KiB
C++
68 lines
1.2 KiB
C++
//
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// Video.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 04/10/2019.
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// Copyright © 2019 Thomas Harte. All rights reserved.
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//
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#ifndef Atari_ST_Video_hpp
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#define Atari_ST_Video_hpp
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#include "../../Outputs/CRT/CRT.hpp"
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#include "../../ClockReceiver/ClockReceiver.hpp"
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namespace Atari {
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namespace ST {
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class Video {
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public:
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Video();
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/*!
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Sets the target device for video data.
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*/
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void set_scan_target(Outputs::Display::ScanTarget *scan_target);
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/*!
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Produces the next @c duration period of pixels.
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*/
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void run_for(HalfCycles duration);
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/*!
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@returns the number of cycles until there is next a change in the hsync,
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vsync or display_enable outputs.
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*/
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HalfCycles get_next_sequence_point();
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bool hsync();
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bool vsync();
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bool display_enabled();
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void set_ram(uint16_t *);
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uint16_t read(int address);
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void write(int address, uint16_t value);
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private:
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Outputs::CRT::CRT crt_;
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uint16_t palette_[16];
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int base_address_ = 0;
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int current_address_ = 0;
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uint16_t *ram_;
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uint16_t line_buffer_[256];
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uint16_t *pixel_pointer_;
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int x = 0, y = 0;
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void output_border(int duration);
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uint16_t video_mode_ = 0;
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};
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}
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}
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#endif /* Atari_ST_Video_hpp */
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