parse_state_changed

Description:

public void parse_state_changed (out State oldstate, out State newstate, out State pending)

Extracts the old and new states from the GstMessage.

Typical usage of this function might be:

  ...
  switch (GST_MESSAGE_TYPE (msg)) {
    case GST_MESSAGE_STATE_CHANGED: {
      GstState old_state, new_state;

      gst_message_parse_state_changed (msg, &old_state, &new_state, NULL);
      g_print ("Element %s changed state from %s to %s.\n",
          GST_OBJECT_NAME (msg->src),
          gst_state_get_name (old_state),
          gst_state_get_name (new_state));
      break;
    }
    ...
  }
  ...

MT safe.

Parameters:

this	a valid Message of type GST_MESSAGE_STATE_CHANGED
oldstate	the previous state, or null
newstate	the new (current) state, or null
pending	the pending (target) state, or null