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/*
* This file is part of mpv video player.
*
* mpv is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* mpv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MP_PRESENT_SYNC_H
#define MP_PRESENT_SYNC_H
#include <stdbool.h>
#include <stdint.h>
#include "vo.h"
/* Generic helpers for obtaining presentation feedback from
* backend APIs. This requires ust/msc values. */
struct mp_present_entry {
int64_t ust;
int64_t msc;
int64_t vsync_duration;
int64_t skipped_vsyncs;
int64_t queue_display_time;
struct {
struct mp_present_entry *next, *prev;
} list_node;
};
struct mp_present {
struct mp_present_entry *head, *tail;
struct mp_vo_opts *opts;
};
struct mp_present *mp_present_initialize(void *talloc_ctx, struct mp_vo_opts *opts, int entries);
// Used during the get_vsync call to deliver the presentation statistics to the VO.
void present_sync_get_info(struct mp_present *present, struct vo_vsync_info *info);
// Called after every buffer swap to update presentation statistics.
void present_sync_swap(struct mp_present *present);
// Called anytime the backend delivers new ust/msc values.
void present_sync_update_values(struct mp_present *present, int64_t ust,
int64_t msc);
#endif /* MP_PRESENT_SYNC_H */
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