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#ifndef BACKEND_DRM_UTIL_H
#define BACKEND_DRM_UTIL_H
#include <stdint.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
struct wlr_drm_connector;
// Calculates a more accurate refresh rate (mHz) than what mode itself provides
int32_t calculate_refresh_rate(const drmModeModeInfo *mode);
enum wlr_output_mode_aspect_ratio get_picture_aspect_ratio(const drmModeModeInfo *mode);
// Populates the make/model/phys_{width,height} of output from the edid data
void parse_edid(struct wlr_drm_connector *conn, size_t len, const uint8_t *data);
// Part of match_obj
enum {
UNMATCHED = (uint32_t)-1,
SKIP = (uint32_t)-2,
};
/*
* Tries to match some DRM objects with some other DRM resource.
* e.g. Match CRTCs with Encoders, CRTCs with Planes.
*
* objs contains a bit array which resources it can be matched with.
* e.g. Bit 0 set means can be matched with res[0]
*
* res contains an index of which objs it is matched with or UNMATCHED.
*
* This solution is left in out.
* Returns the total number of matched solutions.
*/
size_t match_obj(size_t num_objs, const uint32_t objs[static restrict num_objs],
size_t num_res, const uint32_t res[static restrict num_res],
uint32_t out[static restrict num_res]);
#endif
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