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#ifndef _ROOTSTON_OUTPUT_H
#define _ROOTSTON_OUTPUT_H
#include <time.h>
#include <pixman.h>
#include <wayland-server.h>
/**
* Damage tracking requires to keep track of previous frames' damage. To allow
* damage tracking to work with triple buffering, an history of two frames is
* required.
*/
#define ROOTS_OUTPUT_PREVIOUS_DAMAGE_LEN 2
struct roots_desktop;
struct roots_output {
struct roots_desktop *desktop;
struct wlr_output *wlr_output;
struct wl_list link; // roots_desktop:outputs
struct roots_view *fullscreen_view;
struct timespec last_frame;
pixman_region32_t damage;
bool frame_pending;
// circular queue for previous damage
pixman_region32_t previous_damage[ROOTS_OUTPUT_PREVIOUS_DAMAGE_LEN];
size_t previous_damage_idx;
struct wl_listener frame;
struct wl_listener mode;
struct wl_listener needs_swap;
};
void output_add_notify(struct wl_listener *listener, void *data);
void output_remove_notify(struct wl_listener *listener, void *data);
void output_damage_whole_view(struct roots_output *output,
struct roots_view *view);
void output_damage_from_view(struct roots_output *output,
struct roots_view *view);
#endif
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