C++ (Cpp) gst_wl_display_roundtrip Exemples

Exemple #1

Fichier : wldisplay.c Projet : Lachann/gst-plugins-bad

GstWlDisplay *
gst_wl_display_new_existing (struct wl_display * display,
    gboolean take_ownership, GError ** error)
{
  GstWlDisplay *self;
  GError *err = NULL;
  gint i;

  g_return_val_if_fail (display != NULL, NULL);

  self = g_object_new (GST_TYPE_WL_DISPLAY, NULL);
  self->display = display;
  self->own_display = take_ownership;

  self->queue = wl_display_create_queue (self->display);
  self->registry = wl_display_get_registry (self->display);
  wl_proxy_set_queue ((struct wl_proxy *) self->registry, self->queue);
  wl_registry_add_listener (self->registry, &registry_listener, self);

  /* we need exactly 2 roundtrips to discover global objects and their state */
  for (i = 0; i < 2; i++) {
    if (gst_wl_display_roundtrip (self) < 0) {
      *error = g_error_new (g_quark_from_static_string ("GstWlDisplay"), 0,
          "Error communicating with the wayland display");
      g_object_unref (self);
      return NULL;
    }
  }

  /* verify we got all the required interfaces */
#define VERIFY_INTERFACE_EXISTS(var, interface) \
  if (!self->var) { \
    g_set_error (error, g_quark_from_static_string ("GstWlDisplay"), 0, \
        "Could not bind to " interface ". Either it is not implemented in " \
        "the compositor, or the implemented version doesn't match"); \
    g_object_unref (self); \
    return NULL; \
  }

  VERIFY_INTERFACE_EXISTS (compositor, "wl_compositor");
  VERIFY_INTERFACE_EXISTS (subcompositor, "wl_subcompositor");
  VERIFY_INTERFACE_EXISTS (shell, "wl_shell");
  VERIFY_INTERFACE_EXISTS (shm, "wl_shm");
  VERIFY_INTERFACE_EXISTS (scaler, "wl_scaler");

#undef VERIFY_INTERFACE_EXISTS

  self->thread = g_thread_try_new ("GstWlDisplay", gst_wl_display_thread_run,
      self, &err);
  if (err) {
    g_propagate_prefixed_error (error, err,
        "Failed to start thread for the display's events");
    g_object_unref (self);
    return NULL;
  }

  return self;
}

Exemple #2

Fichier : wldisplay.c Projet : luisbg/gst-plugins-bad

GstWlDisplay *
gst_wl_display_new_existing (struct wl_display * display,
    gboolean take_ownership, GError ** error)
{
  GstWlDisplay *self;
  GError *err = NULL;
  gint i;

  g_return_val_if_fail (display != NULL, NULL);

  self = g_object_new (GST_TYPE_WL_DISPLAY, NULL);
  self->display = display;
  self->own_display = take_ownership;

  self->queue = wl_display_create_queue (self->display);
  self->registry = wl_display_get_registry (self->display);
  wl_proxy_set_queue ((struct wl_proxy *) self->registry, self->queue);
  wl_registry_add_listener (self->registry, &registry_listener, self);

  /* we need exactly 2 roundtrips to discover global objects and their state */
  for (i = 0; i < 2; i++) {
    if (gst_wl_display_roundtrip (self) < 0) {
      *error = g_error_new (g_quark_from_static_string ("GstWlDisplay"), 0,
          "Error communicating with the wayland display");
      g_object_unref (self);
      return NULL;
    }
  }

  /* verify we got all the required interfaces */
#define VERIFY_INTERFACE_EXISTS(var, interface) \
  if (!self->var) { \
    g_set_error (error, g_quark_from_static_string ("GstWlDisplay"), 0, \
        "Could not bind to " interface ". Either it is not implemented in " \
        "the compositor, or the implemented version doesn't match"); \
    g_object_unref (self); \
    return NULL; \
  }

  VERIFY_INTERFACE_EXISTS (compositor, "wl_compositor");
  VERIFY_INTERFACE_EXISTS (subcompositor, "wl_subcompositor");
  VERIFY_INTERFACE_EXISTS (shell, "wl_shell");
  VERIFY_INTERFACE_EXISTS (shm, "wl_shm");

#undef VERIFY_INTERFACE_EXISTS

  /* We make the viewporter optional even though it may cause bad display.
   * This is so one can test wayland display on older compositor or on
   * compositor that don't implement this extension. */
  if (!self->viewporter) {
    g_warning ("Wayland compositor is missing the ability to scale, video "
        "display may not work properly.");
  }

  if (!self->dmabuf) {
    g_warning ("Could not bind to zwp_linux_dmabuf_v1");
  }

  self->thread = g_thread_try_new ("GstWlDisplay", gst_wl_display_thread_run,
      self, &err);
  if (err) {
    g_propagate_prefixed_error (error, err,
        "Failed to start thread for the display's events");
    g_object_unref (self);
    return NULL;
  }

  return self;
}