GStreamer: fix compilation with version < 0.10.31.

Qt 5.4 and earlier required GStreamer 0.10.24 as minimum version.
Qt 5.5 added code that requires 0.10.31, this code is now ifdef'd
and we now support again 0.10.24.

Task-number: QTBUG-48353
Change-Id: Ie708a33c0515874b003ce26a3400475075d316ca
Reviewed-by: Christian Stromme <christian.stromme@theqtcompany.com>

2 files changed, 7 insertions, 0 deletions

diff --git a/src/multimedia/gsttools_headers/qgstutils_p.h b/src/multimedia/gsttools_headers/qgstutils_p.h
index 31fb85847..cf677c321 100644
--- a/src/multimedia/gsttools_headers/qgstutils_p.h
+++ b/src/multimedia/gsttools_headers/qgstutils_p.h
@@ -150,6 +150,8 @@ gboolean qt_gst_element_query_position(GstElement *element, GstFormat format, gi
 gboolean qt_gst_element_query_duration(GstElement *element, GstFormat format, gint64 *cur);
 GstCaps *qt_gst_caps_normalize(GstCaps *caps);
 const gchar *qt_gst_element_get_factory_name(GstElement *element);
+gboolean qt_gst_caps_can_intersect(const GstCaps * caps1, const GstCaps * caps2);
+GList *qt_gst_video_sinks();
 
 QDebug operator <<(QDebug debug, GstCaps *caps);
 
diff --git a/src/multimedia/gsttools_headers/qvideosurfacegstsink_p.h b/src/multimedia/gsttools_headers/qvideosurfacegstsink_p.h
index a1ef5616b..9c04b9804 100644
--- a/src/multimedia/gsttools_headers/qvideosurfacegstsink_p.h
+++ b/src/multimedia/gsttools_headers/qvideosurfacegstsink_p.h
@@ -157,7 +157,12 @@ private:
 
     static gboolean unlock(GstBaseSink *sink);
 
+#if GST_CHECK_VERSION(0, 10, 25)
     static GstFlowReturn show_frame(GstVideoSink *sink, GstBuffer *buffer);
+#else
+    static GstFlowReturn preroll(GstBaseSink *sink, GstBuffer *buffer);
+    static GstFlowReturn render(GstBaseSink *sink, GstBuffer *buffer);
+#endif
 
 private:
     QVideoSurfaceGstDelegate *delegate;