GStreamer: added convenience function in QGstUtils.

-> qt_gst_element_get_factory_name(GstElement *elem)

Change-Id: Icf806488b49fbcdecdd605b6316bd1ef8796a883
Reviewed-by: Christian Stromme <christian.stromme@theqtcompany.com>

src/gsttools/qgstutils.cpp

@@ -1453,6 +1453,17 @@ GstCaps *qt_gst_caps_normalize(GstCaps *caps)
 #endif
 }
 
+const gchar *qt_gst_element_get_factory_name(GstElement *element)
+{
+    const gchar *name = 0;
+    const GstElementFactory *factory = 0;
+
+    if (element && (factory = gst_element_get_factory(element)))
+        name = gst_plugin_feature_get_name(GST_PLUGIN_FEATURE(factory));
+
+    return name;
+}
+
 QDebug operator <<(QDebug debug, GstCaps *caps)
 {
     if (caps) {

src/multimedia/gsttools_headers/qgstutils_p.h

@@ -147,6 +147,7 @@ GstStructure *qt_gst_structure_new_empty(const char *name);
 gboolean qt_gst_element_query_position(GstElement *element, GstFormat format, gint64 *cur);
 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);
 
 QDebug operator <<(QDebug debug, GstCaps *caps);
 

src/plugins/gstreamer/camerabin/camerabinaudioencoder.cpp

@@ -34,6 +34,7 @@
 #include "camerabinaudioencoder.h"
 #include "camerabincontainer.h"
 #include <private/qgstcodecsinfo_p.h>
+#include <private/qgstutils_p.h>
 
 #include <QtCore/qdebug.h>
 
@@ -120,8 +121,7 @@ GstEncodingProfile *CameraBinAudioEncoder::createProfile()
 void CameraBinAudioEncoder::applySettings(GstElement *encoder)
 {
     GObjectClass * const objectClass = G_OBJECT_GET_CLASS(encoder);
-    const char * const name = gst_plugin_feature_get_name(
-                GST_PLUGIN_FEATURE(gst_element_get_factory(encoder)));
+    const char * const name = qt_gst_element_get_factory_name(encoder);
 
     const bool isVorbis = qstrcmp(name, "vorbisenc") == 0;
 

src/plugins/gstreamer/camerabin/camerabinsession.cpp

@@ -388,7 +388,7 @@ void CameraBinSession::setupCaptureResolution()
     gst_caps_unref(caps);
 
     // Special case when using mfw_v4lsrc
-    if (m_videoSrc && qstrcmp(gst_plugin_feature_get_name(GST_PLUGIN_FEATURE(gst_element_get_factory(m_videoSrc))), "mfw_v4lsrc") == 0) {
+    if (m_videoSrc && qstrcmp(qt_gst_element_get_factory_name(m_videoSrc), "mfw_v4lsrc") == 0) {
         int capMode = 0;
         if (viewfinderResolution == QSize(320, 240))
             capMode = 1;
@@ -472,9 +472,7 @@ GstElement *CameraBinSession::buildCameraSource()
 #if CAMERABIN_DEBUG
         qDebug() << "set camera device" << m_inputDevice;
 #endif
-        const char *const cameraSrcName = gst_plugin_feature_get_name(
-                    GST_PLUGIN_FEATURE(gst_element_get_factory(m_cameraSrc)));
-        m_usingWrapperCameraBinSrc = qstrcmp(cameraSrcName, "wrappercamerabinsrc") == 0;
+        m_usingWrapperCameraBinSrc = qstrcmp(qt_gst_element_get_factory_name(m_cameraSrc), "wrappercamerabinsrc") == 0;
 
         if (g_object_class_find_property(G_OBJECT_GET_CLASS(m_cameraSrc), "video-source")) {
             if (!m_videoSrc) {

src/plugins/gstreamer/camerabin/camerabinvideoencoder.cpp

@@ -34,6 +34,7 @@
 #include "camerabinvideoencoder.h"
 #include "camerabinsession.h"
 #include "camerabincontainer.h"
+#include <private/qgstutils_p.h>
 
 #include <QtCore/qdebug.h>
 
@@ -178,8 +179,7 @@ GstEncodingProfile *CameraBinVideoEncoder::createProfile()
 void CameraBinVideoEncoder::applySettings(GstElement *encoder)
 {
     GObjectClass * const objectClass = G_OBJECT_GET_CLASS(encoder);
-    const char * const name = gst_plugin_feature_get_name(
-                GST_PLUGIN_FEATURE(gst_element_get_factory(encoder)));
+    const char * const name = qt_gst_element_get_factory_name(encoder);
 
     const int bitRate = m_actualVideoSettings.bitRate();
     if (bitRate == -1) {