diff options
Diffstat (limited to 'emu/fbgl_viewer.c')
| -rw-r--r-- | emu/fbgl_viewer.c | 131 |
1 files changed, 100 insertions, 31 deletions
diff --git a/emu/fbgl_viewer.c b/emu/fbgl_viewer.c index c6e077d..4e31f6d 100644 --- a/emu/fbgl_viewer.c +++ b/emu/fbgl_viewer.c @@ -1,35 +1,104 @@ -#include <stdio.h> #include <SDL2/SDL.h> +#include <sys/ipc.h> +#include <sys/shm.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> -#define SCREEN_WIDTH 800 -#define SCREEN_HEIGHT 600 -#define SCREEN_TITLE "FBGL Viewer" - -int main() -{ - if (SDL_Init(SDL_INIT_VIDEO) < 0) { - printf("Couldn't initialize SDL: %s\n", SDL_GetError()); - return EXIT_FAILURE; - } - - SDL_Window *window = SDL_CreateWindow(SCREEN_TITLE, - SDL_WINDOWPOS_UNDEFINED, - SDL_WINDOWPOS_UNDEFINED, - SCREEN_WIDTH, SCREEN_HEIGHT, 0); - if (!window) { - printf("Failed to open %d x %d window: %s\n", SCREEN_WIDTH, - SCREEN_HEIGHT, SDL_GetError()); - return EXIT_FAILURE; - } - - SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, 0); - SDL_SetRenderDrawColor(renderer, 255, 255, 255, 250); - SDL_RenderClear(renderer); - SDL_RenderPresent(renderer); - SDL_Delay(2000); - SDL_DestroyWindow(window); - SDL_DestroyRenderer(renderer); - SDL_Quit(); +#define FBGL_SHM_KEY 0x1234FBCD +#define FBGL_WIDTH 800 +#define FBGL_HEIGHT 600 +#define FBGL_SIZE (FBGL_WIDTH * FBGL_HEIGHT * 4) - return 0; +int main(void) { + printf("FBGL Viewer - Connecting to shared memory...\n"); + + // Attach to shared memory + int shm_id = shmget(FBGL_SHM_KEY, FBGL_SIZE, 0666); + if (shm_id < 0) { + fprintf(stderr, "Error: Cannot access shared memory (key: 0x%08X)\n", FBGL_SHM_KEY); + fprintf(stderr, "Make sure the FBGL program is running first!\n"); + return 1; + } + + void* shared_mem = shmat(shm_id, NULL, SHM_RDONLY); + if (shared_mem == (void*)-1) { + fprintf(stderr, "Error: Cannot attach to shared memory\n"); + return 1; + } + + printf("Connected to shared memory (SHM ID: %d)\n", shm_id); + + // Initialize SDL + if (SDL_Init(SDL_INIT_VIDEO) < 0) { + fprintf(stderr, "SDL Init failed: %s\n", SDL_GetError()); + shmdt(shared_mem); + return 1; + } + + SDL_Window* window = SDL_CreateWindow("FBGL Viewer", + SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, + FBGL_WIDTH, FBGL_HEIGHT, SDL_WINDOW_SHOWN); + + if (!window) { + fprintf(stderr, "Window creation failed: %s\n", SDL_GetError()); + SDL_Quit(); + shmdt(shared_mem); + return 1; + } + + SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, + SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC); + + SDL_Texture* texture = SDL_CreateTexture(renderer, + SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, + FBGL_WIDTH, FBGL_HEIGHT); + + printf("FBGL Viewer running at %dx%d\n", FBGL_WIDTH, FBGL_HEIGHT); + printf("Press ESC or close window to exit.\n"); + + int running = 1; + SDL_Event event; + Uint32 frame_count = 0; + Uint32 last_time = SDL_GetTicks(); + + while (running) { + while (SDL_PollEvent(&event)) { + if (event.type == SDL_QUIT || + (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_ESCAPE)) { + running = 0; + } + } + + // Update texture with framebuffer data + SDL_UpdateTexture(texture, NULL, shared_mem, FBGL_WIDTH * 4); + SDL_RenderClear(renderer); + SDL_RenderCopy(renderer, texture, NULL, NULL); + SDL_RenderPresent(renderer); + + // Calculate FPS every second + frame_count++; + Uint32 current_time = SDL_GetTicks(); + if (current_time - last_time >= 1000) { + char title[256]; + snprintf(title, sizeof(title), "FBGL Viewer - %u FPS", frame_count); + SDL_SetWindowTitle(window, title); + frame_count = 0; + last_time = current_time; + } + + SDL_Delay(16); // ~60 FPS + } + + printf("Shutting down...\n"); + + SDL_DestroyTexture(texture); + SDL_DestroyRenderer(renderer); + SDL_DestroyWindow(window); + SDL_Quit(); + + shmdt(shared_mem); + + return 0; } |