wayland/egl: use redraw callback

This solves the issue where we would not receive any frame events. The
difference to my earlier tests is that now it looks like eglSwapBuffers uses
it's own event queue or something similiar along the lines. Becaues the
performance is the same as without any redraw callback.

2 files changed, 32 insertions, 1 deletions

diff --git a/video/out/gl_wayland.c b/video/out/gl_wayland.c
index e13314f531..ddc12c2486 100644
--- a/video/out/gl_wayland.c
+++ b/video/out/gl_wayland.c
@@ -196,12 +196,40 @@ static void releaseGlContext_wayland(MPGLContext *ctx)
     wl->egl_context.egl.ctx = NULL;
 }
 
-static void swapGlBuffers_wayland(MPGLContext *ctx)
+static const struct wl_callback_listener frame_listener;
+
+static void frame_handle_redraw(void *data,
+                                struct wl_callback *callback,
+                                uint32_t time)
+
 {
+    MPGLContext *ctx = data;
     struct vo_wayland_state *wl = ctx->vo->wayland;
+
+    if (callback)
+        wl_callback_destroy(callback);
+
+    //struct wl_callback *tmp = wl_surface_frame(wl->window.surface);
+    //wl_callback_add_listener(tmp, &frame_listener, ctx);
+    wl->egl_context.redraw_callback = wl_surface_frame(wl->window.surface);
+    wl_callback_add_listener(wl->egl_context.redraw_callback, &frame_listener, ctx);
+
     eglSwapBuffers(wl->egl_context.egl.dpy, wl->egl_context.egl_surface);
 }
 
+static const struct wl_callback_listener frame_listener = {
+    frame_handle_redraw
+};
+
+static void swapGlBuffers_wayland(MPGLContext *ctx)
+{
+    struct vo_wayland_state *wl = ctx->vo->wayland;
+//    eglSwapBuffers(wl->egl_context.egl.dpy, wl->egl_context.egl_surface);
+
+    if (!wl->egl_context.redraw_callback)
+        frame_handle_redraw(ctx, NULL, 0);
+}
+
 static int control(struct vo *vo, int *events, int request, void *data)
 {
     struct vo_wayland_state *wl = vo->wayland;
diff --git a/video/out/wayland_common.h b/video/out/wayland_common.h
index ac5fc3cf39..e8e0420706 100644
--- a/video/out/wayland_common.h
+++ b/video/out/wayland_common.h
@@ -60,6 +60,9 @@ struct vo_wayland_state {
             EGLContext ctx;
             EGLConfig conf;
         } egl;
+
+
+        struct wl_callback * redraw_callback;
     } egl_context;
 #endif