interface fb extends service {
		/* Get screen resolution */
		sysarg_t get_resolution(out sysarg_t width, out sysarg_t height);

		/* Yield screen */
		sysarg_t screen_yield(void);

		/* Reclaim screen */
		sysarg_t screen_reclaim(void);

		/* Set mouse cursor position on screen */
		sysarg_t pointer_move(in sysarg_t x, in sysarg_t y);

		/* Create new viewport */
		sysarg_t viewport_create(in sysarg_t origin, in sysarg_t dimension);

		/* Get viewport size in character cells */
		sysarg_t get_csize(out sysarg_t width, out sysarg_t height);

		/* Clear viewport character buffer */
		sysarg_t clear(void);

		/* Scroll viewport character buffer */
		sysarg_t scroll(in sysarg_t lines);

		/* Set active viewport */
		sysarg_t viewport_switch(in sysarg_t index);

		/* Delete viewport */
		sysarg_t viewport_delete(in sysarg_t index);

		/* Get color capabilities of the screen */
		sysarg_t get_color_cap(void);

		/* Set abstract text style */
		sysarg_t set_style(in sysarg_t style);

		/* Set EGA-based text color */
		sysarg_t set_color(in sysarg_t fg_color, in sysarg_t bg_color, in sysarg_t atrr);

		/* Set RGB-based text color */
		sysarg_t set_rgb_color(in sysarg_t fg_color, in sysarg_t bg_color);

		/* Put a character to a given position in viewport character buffer */
		sysarg_t putchar(in sysarg_t char, in sysarg_t col, in sysarg_t row);

		/* Set character cursor visibility in viewport */
		sysarg_t cursor_visibility(in sysarg_t visible);

		/* Set character cursor position in viewport */
		sysarg_t cursor_goto(in sysarg_t col, in sysarg_t row);

		/* Prepare memory sharing of bitmaps */
		sysarg_t prepare_shm(in sysarg_t as_area_base);

		/* Share bitmap or text data */
		sysarg_t ipc_m_share_out(in sysarg_t as_area_base, in sysarg_t as_area_size, out sysarg_t dst_as_area);

		/* Drop memory sharing */
		sysarg_t drop_shm(void);

		/* Draw PPM data from shared memory to viewport */
		sysarg_t draw_ppm(in sysarg_t x, in sysarg_t y);

		/* Put characters from shared memory to viewport */
		sysarg_t draw_text_data(in sysarg_t x, in sysarg_t y, in sysarg_t width, in sysarg_t height);

		/* Convert PPM data from shared memory to pixmap */
		sysarg_t shm2pixmap(void);

		/* Save viewport contents to a pixmap */
		sysarg_t vp2pixmap(in sysarg_t vp_index);

		/* Draw pixmap to viewport */
		sysarg_t vp_draw_pixmap(in sysarg_t vp_index, in sysarg_t pm_index);

		/* Discard pixmap */
		sysarg_t drop_pixmap(in sysarg_t pm_index);

		/* Create new (empty) animation for a viewport */
		sysarg_t anim_create(in sysarg_t vp_index);

		/* Append a pixmap to an animation */
		sysarg_t anim_addpixmap(in sysarg_t anim_index, in sysarg_t pm_index);

		/* Change a viewport associated with an animation */
		sysarg_t anim_chgvp(in sysarg_t anim_index, in sysarg_t vp_index);

		/* Start animation playback */
		sysarg_t anim_start(in sysarg_t anim_index);

		/* Stop animation playback */
		sysarg_t anim_stop(in sysarg_t anim_index);

		/* Delete animation */
		sysarg_t anim_drop(in sysarg_t anim_index);
	protocol:
		[fb.bp]
};

frame fb {
	provides:
		fb fb;
	requires:
		[/uspace/lib/libc/requires]
		ns ns;
	initialization:
		!ns.ipc_m_connect_to_me /* fb */
	protocol:
		[/uspace/lib/libc/protocol]
};