diff options
| -rw-r--r-- | src/compositor.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/compositor.c b/src/compositor.c index ac5bda27..f2541161 100644 --- a/src/compositor.c +++ b/src/compositor.c @@ -2052,6 +2052,33 @@ weston_compositor_read_input(int fd, uint32_t mask, void *data) return 1; } +static void +weston_output_check_timestamp(struct weston_output *output, + const struct timespec *stamp) +{ + int bad_timestamp = 0; + uint32_t cur_frame_time = stamp->tv_sec * 1000 + + stamp->tv_nsec / 1000000; + + /* Getting zeroed-out timestamps is very unlikely and probably + * indicates that DRM driver does not support it. + */ + if (stamp->tv_sec == 0 && stamp->tv_nsec == 0) + bad_timestamp = 1; + + /* Also, let's make sure that current stamp has advanced + * at least a little since last time. + */ + if (cur_frame_time <= output->frame_time) + bad_timestamp = 1; + + if (bad_timestamp) { + weston_log("Bad timestamp! Abort Weston! %m\n"); + weston_compositor_exit_with_code(output->compositor, + EXIT_FAILURE); + } +} + WL_EXPORT void weston_output_finish_frame(struct weston_output *output, const struct timespec *stamp) @@ -2062,6 +2089,8 @@ weston_output_finish_frame(struct weston_output *output, int fd, r; uint32_t refresh_nsec; + weston_output_check_timestamp(output, stamp); + refresh_nsec = 1000000000000UL / output->current_mode->refresh; weston_presentation_feedback_present_list(&output->feedback_list, output, refresh_nsec, stamp, |