dingusppc/devices/video/videoctrl.h

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/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-23 divingkatae and maximum
(theweirdo) spatium
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/** @file Video Conroller base class definitions. */
#ifndef VIDEO_CTRL_H
#define VIDEO_CTRL_H
#include <core/hostevents.h>
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#include <devices/common/hwinterrupt.h>
#include <SDL.h>
#include <cinttypes>
#include <functional>
class VideoCtrlBase {
public:
VideoCtrlBase(int width = 640, int height = 480);
~VideoCtrlBase();
void handle_events(const WindowEvent& wnd_event);
void create_display_window(int width, int height);
void blank_display();
void update_screen(void);
void start_refresh_task();
void stop_refresh_task();
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void get_palette_colors(uint8_t index, uint8_t& r, uint8_t& g, uint8_t& b,
uint8_t& a);
void set_palette_color(uint8_t index, uint8_t r, uint8_t g, uint8_t b, uint8_t a);
// HW cursor support
void setup_hw_cursor(int cursor_width=64, int cur_height=64);
virtual void draw_hw_cursor(uint8_t *dst_buf, int dst_pitch) {};
virtual void get_cursor_position(int& x, int& y) { x = 0; y = 0; };
// converters for various framebuffer pixel depths
virtual void convert_frame_1bpp(uint8_t *dst_buf, int dst_pitch);
virtual void convert_frame_8bpp(uint8_t *dst_buf, int dst_pitch);
protected:
// CRT controller parameters
bool crtc_on = false;
bool blank_on = true;
bool resizing = false;
bool cursor_on = false;
int active_width; // width of the visible display area
int active_height; // height of the visible display area
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int hori_total = 0;
int vert_total = 0;
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int hori_blank = 0;
int vert_blank = 0;
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int pixel_depth;
float pixel_clock;
float refresh_rate;
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uint32_t palette[256]; // internal DAC palette in RGBA format
// Framebuffer parameters
uint8_t* fb_ptr;
int fb_pitch;
uint32_t refresh_task_id = 0;
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uint32_t vbl_end_task_id = 0;
// interrupt suff
InterruptCtrl* int_ctrl = nullptr;
uint32_t irq_id = 0;
std::function<void(uint8_t *dst_buf, int dst_pitch)> convert_fb_cb;
private:
uint32_t disp_wnd_id = 0;
SDL_Window* display_wnd = 0;
SDL_Renderer* renderer = 0;
SDL_Texture* disp_texture = 0;
SDL_Texture* cursor_texture = 0;
SDL_Rect cursor_rect; // destination rectangle for cursor drawing
};
#endif // VIDEO_CTRL_H