From 6288f8e2e60e8a5f4db712a11c0c1cffd1a76a01 Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Sat, 22 Apr 2017 16:30:36 +0200
Subject: [PATCH] Add dummy
 wxGStreamerMediaBackend::QueryVideoSizeFromElement()

This is not used, but having it avoids warnings about breaking ABI
compatibility with 3.0.2 when using GStreamer 1.0 in 3.0.3.
---
 src/unix/mediactrl.cpp | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/unix/mediactrl.cpp b/src/unix/mediactrl.cpp
index edc8f943f4..928648fd6e 100644
--- a/src/unix/mediactrl.cpp
+++ b/src/unix/mediactrl.cpp
@@ -693,7 +693,18 @@ bool wxGStreamerMediaBackend::QueryVideoSizeFromElement(GstElement* element)
 
     return true;
 }
-#endif
+#else // GStreamer 1.0
+
+// This method is unused, but still provide just to avoid warnings about ABI
+// incompatible changes compared to the previous versions, in which it always
+// existed.
+bool
+wxGStreamerMediaBackend::QueryVideoSizeFromElement(GstElement* WXUNUSED(element))
+{
+    return false;
+}
+
+#endif // GStreamer 0.x/1.0
 
 //-----------------------------------------------------------------------------
 // wxGStreamerMediaBackend::QueryVideoSizeFromPad