1From 3a6c0e2bfc3ae7d4259b76ba3969712bb085214e Mon Sep 17 00:00:00 2001
2From: Jeffy Chen <jeffy.chen@rock-chips.com>
3Date: Mon, 8 Nov 2021 18:45:00 +0800
4Subject: [PATCH 24/41] waylandsink: Support frame-sync mode
5
6Set env "WAYLANDSINK_SYNC_FRAME" to enable frame syncing.
7
8Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
9---
10 ext/wayland/gstwaylandsink.c | 9 +++++++++
11 ext/wayland/gstwaylandsink.h | 1 +
12 2 files changed, 10 insertions(+)
13
14diff --git a/ext/wayland/gstwaylandsink.c b/ext/wayland/gstwaylandsink.c
15index 2c5b295..5e142e9 100644
16--- a/ext/wayland/gstwaylandsink.c
17+++ b/ext/wayland/gstwaylandsink.c
18@@ -254,6 +254,7 @@ gst_wayland_sink_init (GstWaylandSink * self)
19 {
20   g_mutex_init (&self->display_lock);
21   g_mutex_init (&self->render_lock);
22+  g_cond_init (&self->redraw_cond);
23
24   self->window_handle = 1;
25   self->layer = GST_WL_WINDOW_LAYER_NORMAL;
26@@ -455,6 +456,7 @@ gst_wayland_sink_finalize (GObject * object)
27
28   g_mutex_clear (&self->display_lock);
29   g_mutex_clear (&self->render_lock);
30+  g_cond_clear (&self->redraw_cond);
31
32   G_OBJECT_CLASS (parent_class)->finalize (object);
33 }
34@@ -823,6 +825,7 @@ frame_redraw_callback (void *data, struct wl_callback *callback, uint32_t time)
35
36   g_mutex_lock (&self->render_lock);
37   self->redraw_pending = FALSE;
38+  g_cond_signal (&self->redraw_cond);
39
40   if (self->callback) {
41     wl_callback_destroy (callback);
42@@ -858,6 +861,11 @@ render_last_buffer (GstWaylandSink * self, gboolean redraw)
43     self->resend_info = FALSE;
44   }
45   gst_wl_window_render (self->window, wlbuffer, info);
46+
47+  if (g_getenv ("WAYLANDSINK_SYNC_FRAME")) {
48+    while (self->redraw_pending)
49+      g_cond_wait (&self->redraw_cond, &self->render_lock);
50+  }
51 }
52
53 static void
54@@ -1065,6 +1073,7 @@ render:
55
56   if (buffer != to_render)
57     gst_buffer_unref (to_render);
58+
59   goto done;
60
61 no_window_size:
62diff --git a/ext/wayland/gstwaylandsink.h b/ext/wayland/gstwaylandsink.h
63index 7abfea1..6211fd6 100644
64--- a/ext/wayland/gstwaylandsink.h
65+++ b/ext/wayland/gstwaylandsink.h
66@@ -66,6 +66,7 @@ struct _GstWaylandSink
67   gboolean resend_info;
68   gboolean redraw_pending;
69   GMutex render_lock;
70+  GCond redraw_cond;
71   GstBuffer *last_buffer;
72
73   GstVideoOrientationMethod sink_rotate_method;
74--
752.20.1
76
77