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wayland: really wait until the pending redraw completed.

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Introduce gst_vaapi_window_wayland_sync() helper function to wait for
the completion of the redraw request. Use it in _render() function to
actually block until the previous draw request is completed.
This commit is contained in:
Gwenole Beauchesne 2013-01-28 16:37:28 +01:00
parent 23c6053b94
commit 1fb25b0853
1 changed files with 24 additions and 4 deletions
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28
gst-libs/gst/vaapi/gstvaapiwindow_wayland.c
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@ -71,6 +71,26 @@ gst_vaapi_window_wayland_hide(GstVaapiWindow *window)
return TRUE;
}
static gboolean
gst_vaapi_window_wayland_sync(GstVaapiWindow *window)
{
GstVaapiWindowWaylandPrivate * const priv =
GST_VAAPI_WINDOW_WAYLAND(window)->priv;
gboolean success = TRUE;
if (priv->redraw_pending) {
struct wl_display * const wl_display =
GST_VAAPI_OBJECT_WL_DISPLAY(window);
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
do {
success = wl_display_dispatch(wl_display) >= 0;
} while (success && priv->redraw_pending);
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
}
return success;
}
static void
handle_ping(void *data, struct wl_shell_surface *shell_surface,
uint32_t serial)
@ -256,11 +276,11 @@ gst_vaapi_window_wayland_render(
if (surface_id == VA_INVALID_ID)
return FALSE;
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
/* Wait for the previous frame to complete redraw */
if (priv->redraw_pending)
wl_display_dispatch(wl_display);
if (!gst_vaapi_window_wayland_sync(window))
return FALSE;
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
/* XXX: use VA/VPP for other filters */
va_flags = from_GstVaapiSurfaceRenderFlags(flags);