Ejemplos de GST_QUERY_CAST en C++ (Cpp)

Ejemplo n.º 1

Archivo: testegl.c Proyecto: ryumiel/gst-omx

static gboolean
handle_queued_objects (APP_STATE_T * state)
{
    GstMiniObject *object = NULL;

    g_mutex_lock (&state->queue_lock);
    if (state->flushing) {
        g_cond_broadcast (&state->cond);
        goto beach;
    } else if (g_async_queue_length (state->queue) == 0) {
        goto beach;
    }

    if ((object = g_async_queue_try_pop (state->queue))) {
        if (GST_IS_BUFFER (object)) {
            GstBuffer *buffer = GST_BUFFER_CAST (object);
            update_image (state, buffer);
            render_scene (state);
            gst_buffer_unref (buffer);
            if (!SYNC_BUFFERS) {
                object = NULL;
            }
        } else if (GST_IS_QUERY (object)) {
            GstQuery *query = GST_QUERY_CAST (object);
            GstStructure *s = (GstStructure *) gst_query_get_structure (query);

            if (gst_structure_has_name (s, "not-used")) {
                g_assert_not_reached ();
            } else {
                g_assert_not_reached ();
            }
        } else if (GST_IS_EVENT (object)) {
            GstEvent *event = GST_EVENT_CAST (object);
            g_print ("\nevent %p %s\n", event,
                     gst_event_type_get_name (GST_EVENT_TYPE (event)));

            switch (GST_EVENT_TYPE (event)) {
            case GST_EVENT_EOS:
                flush_internal (state);
                break;
            default:
                break;
            }
            gst_event_unref (event);
            object = NULL;
        }
    }

    if (object) {
        state->popped_obj = object;
        g_cond_broadcast (&state->cond);
    }

beach:
    g_mutex_unlock (&state->queue_lock);

    return FALSE;
}

Ejemplo n.º 2

Archivo: testegl.c Proyecto: 01org/gst-omx

static gboolean
handle_queued_objects (APP_STATE_T * state)
{
  GstMiniObject *object = NULL;

  g_mutex_lock (state->queue_lock);
  if (state->flushing) {
    g_cond_broadcast (state->cond);
    goto beach;
  } else if (g_async_queue_length (state->queue) == 0) {
    goto beach;
  }

  if ((object = g_async_queue_try_pop (state->queue))) {
    if (GST_IS_BUFFER (object)) {
      GstBuffer *buffer = GST_BUFFER_CAST (object);
      update_image (state, buffer);
      render_scene (state);
      gst_buffer_unref (buffer);
      if (!SYNC_BUFFERS) {
        object = NULL;
      }
    } else if (GST_IS_QUERY (object)) {
      GstQuery *query = GST_QUERY_CAST (object);
      GstStructure *s = (GstStructure *) gst_query_get_structure (query);

      if (gst_structure_has_name (s, "eglglessink-allocate-eglimage")) {
        GstBuffer *buffer;
        GstVideoFormat format;
        gint width, height;
        GValue v = { 0, };

        if (!gst_structure_get_enum (s, "format", GST_TYPE_VIDEO_FORMAT,
                (gint *) & format)
            || !gst_structure_get_int (s, "width", &width)
            || !gst_structure_get_int (s, "height", &height)) {
          g_assert_not_reached ();
        }

        buffer =
            gst_egl_allocate_eglimage (state,
            GST_EGL_IMAGE_BUFFER_POOL (state->pool)->allocator, format,
            width, height);
        g_value_init (&v, G_TYPE_POINTER);
        g_value_set_pointer (&v, buffer);

        gst_structure_set_value (s, "buffer", &v);
        g_value_unset (&v);
      } else {
        g_assert_not_reached ();
      }
    } else if (GST_IS_EVENT (object)) {
      GstEvent *event = GST_EVENT_CAST (object);
      g_print ("\nevent %p %s\n", event,
          gst_event_type_get_name (GST_EVENT_TYPE (event)));

      switch (GST_EVENT_TYPE (event)) {
        case GST_EVENT_EOS:
          flush_internal (state);
          break;
        default:
          break;
      }
      gst_event_unref (event);
      object = NULL;
    }
  }

  if (object) {
    state->popped_obj = object;
    g_cond_broadcast (state->cond);
  }

beach:
  g_mutex_unlock (state->queue_lock);

  return FALSE;
}