layoutx/display.h

#ifndef __DISPLAY_H__
#define __DISPLAY_H__

#include <stdint.h>

typedef struct Display Display;

Display *display_create(const char *drm_dev);
void display_destroy(Display *disp);

int display_init(Display *disp, int width, int height);
int display_commit(Display *disp, int fd, int stride);

/* Force the connector output color format used at the next first modeset.
 * 0=auto, 1=RGB, 2=YCbCr444, 3=YCbCr422, 4=YCbCr420. */
int display_set_color_format(int fmt);

int display_get_width(Display *disp);
int display_get_height(Display *disp);

/* Poll the DRM connector state. Returns 1 when the monitor is gone (signal
 * lost, e.g. an HDMI switch pointing elsewhere), 0 while connected, -1 on
 * error. Cheap (one GetConnector), safe to call each frame. */
int display_signal_lost(Display *disp);

#endif