libweston: Use struct timespec for the output presentation timestamp

Store the output presentation timestamp as struct timespec.

This commit is part of a larger effort to transition the Weston codebase
to struct timespec.

Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>

libweston/compositor.c

@@ -2292,15 +2292,13 @@ weston_output_repaint(struct weston_output *output, void *repaint_data)
 	struct wl_list frame_callback_list;
 	pixman_region32_t output_damage;
 	int r;
-	struct timespec frame_time;
+	uint32_t frame_time_msec;
 
 	if (output->destroying)
 		return 0;
 
 	TL_POINT("core_repaint_begin", TLP_OUTPUT(output), TLP_END);
 
-	timespec_from_msec(&frame_time, output->frame_time);
-
 	/* Rebuild the surface list and update surface transforms up front. */
 	weston_compositor_build_view_list(ec);
 
@@ -2348,14 +2346,16 @@ weston_output_repaint(struct weston_output *output, void *repaint_data)
 
 	weston_compositor_repick(ec);
 
+	frame_time_msec = timespec_to_msec(&output->frame_time);
+
 	wl_list_for_each_safe(cb, cnext, &frame_callback_list, link) {
-		wl_callback_send_done(cb->resource, output->frame_time);
+		wl_callback_send_done(cb->resource, frame_time_msec);
 		wl_resource_destroy(cb->resource);
 	}
 
 	wl_list_for_each_safe(animation, next, &output->animation_list, link) {
 		animation->frame_counter++;
-		animation->frame(animation, output, &frame_time);
+		animation->frame(animation, output, &output->frame_time);
 	}
 
 	TL_POINT("core_repaint_posted", TLP_OUTPUT(output), TLP_END);
@@ -2520,7 +2520,7 @@ weston_output_finish_frame(struct weston_output *output,
 						  output->msc,
 						  presented_flags);
 
-	output->frame_time = timespec_to_msec(stamp);
+	output->frame_time = *stamp;
 
 	timespec_add_nsec(&output->next_repaint, stamp, refresh_nsec);
 	timespec_add_msec(&output->next_repaint, &output->next_repaint,

libweston/compositor.h

@@ -193,7 +193,7 @@ struct weston_output {
 	struct wl_signal frame_signal;
 	struct wl_signal destroy_signal;
 	int move_x, move_y;
-	uint32_t frame_time; /* presentation timestamp in milliseconds */
+	struct timespec frame_time; /* presentation timestamp */
 	uint64_t msc;        /* media stream counter */
 	int disable_planes;
 	int destroying;

libweston/screenshooter.c

@@ -36,6 +36,7 @@
 
 #include "compositor.h"
 #include "shared/helpers.h"
+#include "shared/timespec-util.h"
 
 #include "wcap/wcap-decode.h"
 
@@ -259,7 +260,7 @@ weston_recorder_frame_notify(struct wl_listener *listener, void *data)
 		container_of(listener, struct weston_recorder, frame_listener);
 	struct weston_output *output = data;
 	struct weston_compositor *compositor = output->compositor;
-	uint32_t msecs = output->frame_time;
+	uint32_t msecs = timespec_to_msec(&output->frame_time);
 	pixman_box32_t *r;
 	pixman_region32_t damage, transformed_damage;
 	int i, j, k, n, width, height, run, stride;