From: Pekka Paalanen <pekka.paala...@collabora.co.uk>
Add 'msc' field to weston_output to maintain the refresh counter, and
use it in presentation_feedback.presented.
Make compositor-drm update the per-output refresh counter with the
values reported by DRM. If the DRM reported value jumps backwards,
assume it wrapped around once.
Other backends do not update weston_output::msc, and there
presentation_feedback will always deliver refresh counter as zero.
Signed-off-by: Pekka Paalanen <pekka.paala...@collabora.co.uk>
---
src/compositor-drm.c | 14 ++++++++++++++
src/compositor.c | 2 +-
src/compositor.h | 1 +
3 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/src/compositor-drm.c b/src/compositor-drm.c
index 533eb0e..aac3d1d 100644
--- a/src/compositor-drm.c
+++ b/src/compositor-drm.c
@@ -712,6 +712,17 @@ finish_frame:
}
static void
+drm_output_update_msc(struct drm_output *output, unsigned int seq)
+{
+ uint64_t msc_hi = output->base.msc >> 32;
+
+ if (seq < (output->base.msc & 0xffffffff))
+ msc_hi++;
+
+ output->base.msc = (msc_hi << 32) + seq;
+}
+
+static void
vblank_handler(int fd, unsigned int frame, unsigned int sec, unsigned int usec,
void *data)
{
@@ -719,6 +730,7 @@ vblank_handler(int fd, unsigned int frame, unsigned int
sec, unsigned int usec,
struct drm_output *output = s->output;
struct timespec ts;
+ drm_output_update_msc(output, frame);
output->vblank_pending = 0;
drm_output_release_fb(output, s->current);
@@ -742,6 +754,8 @@ page_flip_handler(int fd, unsigned int frame,
struct drm_output *output = (struct drm_output *) data;
struct timespec ts;
+ drm_output_update_msc(output, frame);
+
/* We don't set page_flip_pending on start_repaint_loop, in that case
* we just want to page flip to the current buffer to get an accurate
* timestamp */
diff --git a/src/compositor.c b/src/compositor.c
index c11e82b..c05167d 100644
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -1901,7 +1901,7 @@ weston_output_finish_frame(struct weston_output *output,
refresh_nsec = 1000000000000UL / output->current_mode->refresh;
weston_presentation_feedback_present_list(&output->feedback_list,
output, refresh_nsec, stamp,
- 0);
+ output->msc);
output->frame_time = stamp->tv_sec * 1000 + stamp->tv_nsec / 1000000;
diff --git a/src/compositor.h b/src/compositor.h
index 0dcc414..c94f836 100644
--- a/src/compositor.h
+++ b/src/compositor.h
@@ -198,6 +198,7 @@ struct weston_output {
struct wl_signal move_signal;
int move_x, move_y;
uint32_t frame_time; /* presentation timestamp in milliseconds */
+ uint64_t msc; /* media stream counter */
int disable_planes;
int destroying;
struct wl_list feedback_list;
--
1.8.3.2
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