Initial public release: fresh history

include/fb.h

@@ -0,0 +1,37 @@
+#ifndef FB_H
+#define FB_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+typedef struct {
+    int fb_fd;
+    unsigned char *fb_ptr; /* mmap'ed */
+    size_t fb_size;
+    int width;
+    int height;
+    int bpp;    /* bits per pixel: typically 16 or 32 */
+    int pitch;  /* bytes per scanline */
+} framebuffer_t;
+
+/* Open /dev/fb0 (or fbdev if non-NULL), mmap, and fill fields. */
+int  fb_init(framebuffer_t *fb, const char *fbdev);
+/* Unmap/close and zero out struct. */
+void fb_close(framebuffer_t *fb);
+
+/* Utility draws */
+void fb_clear(framebuffer_t *fb, uint32_t argb);
+void fb_draw_pixel(framebuffer_t *fb, int x, int y, uint32_t argb);
+void fb_fill_rect(framebuffer_t *fb, int x, int y, int w, int h, uint32_t argb);
+
+/* 8x8 glyph blit at native scale (1x). */
+void fb_draw_text8x8(framebuffer_t *fb, int x, int y, const char *s, uint32_t argb);
+
+/* Scaled text using FONT_SCALE (default 2). Matches your UI’s expectations. */
+void fb_draw_text(framebuffer_t *fb, int x, int y, const char *s, uint32_t argb);
+
+/* 1px rectangle outline. */
+void fb_draw_rect_outline(framebuffer_t *fb, int x, int y, int w, int h, uint32_t argb);
+
+#endif /* FB_H */
+