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70 lines
1.7 KiB
C++
70 lines
1.7 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 12/10/2016.
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// Copyright 2016 Thomas Harte. All rights reserved.
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//
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#pragma once
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#include "../../Outputs/CRT/CRT.hpp"
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#include "../../ClockReceiver/ClockReceiver.hpp"
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#include <cstdint>
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#include <memory>
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#include <vector>
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namespace Oric {
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class VideoOutput {
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public:
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VideoOutput(uint8_t *memory);
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void set_colour_rom(const std::vector<uint8_t> &colour_rom);
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void run_for(const Cycles cycles);
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Cycles next_sequence_point() const;
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bool vsync();
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void set_scan_target(Outputs::Display::ScanTarget *scan_target);
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void set_display_type(Outputs::Display::DisplayType display_type);
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Outputs::Display::DisplayType get_display_type() const;
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Outputs::Display::ScanStatus get_scaled_scan_status() const;
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void register_crt_frequency_mismatch();
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private:
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uint8_t *ram_;
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Outputs::CRT::CRT crt_;
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Outputs::CRT::CRTFrequencyMismatchWarner<VideoOutput> frequency_mismatch_warner_;
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bool crt_is_60Hz_ = false;
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bool has_colour_rom_ = false;
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void update_crt_frequency();
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// Counters and limits.
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int counter_ = 0, frame_counter_ = 0;
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int v_sync_start_position_, v_sync_end_position_, counter_period_;
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// Output target and device.
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uint8_t *rgb_pixel_target_ = nullptr;
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uint32_t *composite_pixel_target_ = nullptr;
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uint32_t colour_forms_[8];
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Outputs::Display::InputDataType data_type_;
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// Registers.
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uint8_t ink_, paper_;
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int character_set_base_address_ = 0xb400;
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inline void set_character_set_base_address();
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bool is_graphics_mode_ = false;
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bool next_frame_is_sixty_hertz_ = false;
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bool use_alternative_character_set_;
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bool use_double_height_characters_;
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bool blink_text_;
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};
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}
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