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add timed present idle scheduler

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This commit is contained in:
Rose Hudson 2023-08-22 17:35:03 +01:00
parent e43baf4697
commit bd193cc63b
2 changed files with 55 additions and 0 deletions
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6
include/wlr/types/wlr_frame_scheduler.h
View file

@ -38,6 +38,12 @@ struct wlr_frame_scheduler *wlr_wl_idle_scheduler_create(struct wlr_output *outp
*/
struct wlr_frame_scheduler *wlr_headless_idle_scheduler_create(struct wlr_output *output);
struct wlr_output_event_present;
void wlr_timed_present_idle_scheduler_on_present(struct wlr_frame_scheduler *wlr_scheduler,
struct wlr_output_event_present *present, uint64_t predicted_render_duration_ns);
struct wlr_frame_scheduler *wlr_timed_present_idle_scheduler_create(struct wlr_output *output);
/*
* Creates an appropriate frame scheduler for the given output's backend capabilities.
*/

49
types/wlr_frame_scheduler.c
View file

@ -277,6 +277,55 @@ struct wlr_frame_scheduler *wlr_headless_idle_scheduler_create(struct wlr_output
return &scheduler->base.base;
}
struct timed_present_idle_scheduler {
struct idle_frame_scheduler base;
struct wl_listener commit;
struct wl_event_source *timer;
};
static void timed_present_idle_scheduler_destroy(struct wlr_frame_scheduler *wlr_scheduler) {
struct timed_present_idle_scheduler *scheduler = wl_container_of(wlr_scheduler, scheduler, base.base);
idle_frame_scheduler_finish(&scheduler->base);
wl_list_remove(&scheduler->commit.link);
free(scheduler);
}
static void timed_present_idle_scheduler_handle_commit(struct wl_listener *listener, void *data) {
struct timed_present_idle_scheduler *scheduler = wl_container_of(listener, scheduler, commit);
struct wlr_output_event_commit *event = data;
if (event->output->enabled) {
idle_frame_scheduler_set_frame_pending(&scheduler->base);
}
}
struct wlr_frame_scheduler_impl timed_present_idle_scheduler_impl = {
.schedule_frame = idle_frame_scheduler_schedule_frame,
.destroy = timed_present_idle_scheduler_destroy,
};
void wlr_timed_present_idle_scheduler_on_present(struct wlr_frame_scheduler *wlr_scheduler,
struct wlr_output_event_present *present, uint64_t predicted_render_duration_ns) {
assert(wlr_scheduler->impl == &timed_present_idle_scheduler_impl);
struct timed_present_idle_scheduler *scheduler = wl_container_of(wlr_scheduler, scheduler,
base.base);
// assumes the current time is present->when, which is probably not far off
uint64_t delay_ns = present->refresh - predicted_render_duration_ns;
wl_event_source_timer_update(scheduler->timer, delay_ns / (1000 * 1000));
}
struct wlr_frame_scheduler *wlr_timed_present_idle_scheduler_create(struct wlr_output *output) {
struct timed_present_idle_scheduler *scheduler = calloc(1, sizeof(struct timed_present_idle_scheduler));
if (!scheduler) {
return NULL;
}
frame_scheduler_init(&scheduler->base.base, &timed_present_idle_scheduler_impl, output);
scheduler->commit.notify = timed_present_idle_scheduler_handle_commit;
wl_signal_add(&output->events.commit, &scheduler->commit);
return &scheduler->base.base;
}
struct wlr_frame_scheduler *wlr_frame_scheduler_autocreate(struct wlr_output *output) {
if (wlr_output_is_wl(output) && !wlr_wl_backend_has_presentation_time(output->backend)) {
wlr_log(WLR_INFO, "wp_presentation not available, falling back to frame callbacks");