nesemu/debugger/ppu_view.c

//
// Created by william on 5/1/24.
//

#include <stdlib.h>
#include "ppu_view.h"

void ppv_print_line(PpuView *view, byte reg, int line, char *fmt) {
    int reg_value = ppu_get_state()->registers[reg];
    window_print(view->window, 0, line, fmt);

    for (int i = 0; i < 0x8; i++) {
        byte mask = 0x80 >> i;
        byte bit = (reg_value & mask) >> (8 - i - 1);

        int print_offset = 10 + i;
        if (i > 3) {
            print_offset += 1;
        }

        window_print(view->window, print_offset, line, "%d", bit);
    }
}

void ppv_print(PpuView *view) {
    ppv_print_line(view, PPU_REGISTER_CTRL, 0, "    CTRL:");
    ppv_print_line(view, PPU_REGISTER_MASK, 1, "    MASK:");
    ppv_print_line(view, PPU_REGISTER_STATUS, 2, "  STATUS:");
    ppv_print_line(view, PPU_REGISTER_OAM_ADDR, 3, "OAM_ADDR:");
    ppv_print_line(view, PPU_REGISTER_OAM_DATA, 4, "OAM_DATA:");
    ppv_print_line(view, PPU_REGISTER_SCROLL, 5, "  SCROLL:");
    ppv_print_line(view, PPU_REGISTER_ADDR, 6, "    ADDR:");
    ppv_print_line(view, PPU_REGISTER_DATA, 7, "    DATA:");
}

PpuView *ppv_init(int x, int y) {
    PpuView *view = malloc(sizeof(PpuView));
    view->window = malloc(sizeof(Window));

    window_init(view->window, x, y, PPU_VIEW_WIDTH, PPU_VIEW_HEIGHT, "PPU VIEW");
    ppv_print(view);

    return view;
}

void ppv_uninit(PpuView *view) {
    free(view->window);
    free(view);
}