GStreamer: port to 1.0.

0.10 is still used by default.
To enable GStreamer 1.0, pass GST_VERSION=1.0 to qmake
for qtmultimedia.pro.

Contributions from:
Andrew den Exter <andrew.den.exter@qinetic.com.au>
Ilya Smelykh <ilya@videoexpertsgroup.com>
Jim Hodapp <jim.hodapp@canonical.com>
Sergio Schvezov <sergio.schvezov@canonical.com>

Change-Id: I72a46d1170a8794a149bdb5e20767afcc5b7587c
Reviewed-by: Andrew den Exter <andrew.den.exter@qinetic.com.au>

src/plugins/gstreamer/mediacapture/qgstreamercapturesession.h

@@ -41,8 +41,10 @@
 #include <QtCore/qurl.h>
 
 #include <gst/gst.h>
+#include <gst/video/video.h>
 
 #include <private/qgstreamerbushelper_p.h>
+#include <private/qgstreamerbufferprobe_p.h>
 
 QT_BEGIN_NAMESPACE
 
@@ -70,7 +72,10 @@ public:
     virtual QList<QSize> supportedResolutions(qreal frameRate = -1) const = 0;
 };
 
-class QGstreamerCaptureSession : public QObject, public QGstreamerBusMessageFilter
+class QGstreamerCaptureSession
+        : public QObject
+        , public QGstreamerBusMessageFilter
+        , private QGstreamerBufferProbe
 {
     Q_OBJECT
     Q_PROPERTY(qint64 duration READ duration NOTIFY durationChanged)
@@ -131,7 +136,6 @@ public:
 
     void addProbe(QGstreamerAudioProbeControl* probe);
     void removeProbe(QGstreamerAudioProbeControl* probe);
-    static gboolean padAudioBufferProbe(GstPad *pad, GstBuffer *buffer, gpointer user_data);
 
 signals:
     void stateChanged(QGstreamerCaptureSession::State state);
@@ -156,6 +160,9 @@ public slots:
     void setVolume(qreal volume);
 
 private:
+    void probeCaps(GstCaps *caps);
+    bool probeBuffer(GstBuffer *buffer);
+
     enum PipelineMode { EmptyPipeline, PreviewPipeline, RecordingPipeline, PreviewAndRecordingPipeline };
 
     GstElement *buildEncodeBin();
@@ -180,9 +187,7 @@ private:
     QGstreamerCaptureSession::CaptureMode m_captureMode;
     QMap<QByteArray, QVariant> m_metaData;
 
-    QList<QGstreamerAudioProbeControl*> m_audioProbes;
-    QMutex m_audioProbeMutex;
-    int m_audioBufferProbeId;
+    QGstreamerAudioProbeControl *m_audioProbe;
 
     QGstreamerElementFactory *m_audioInputFactory;
     QGstreamerElementFactory *m_audioPreviewFactory;
@@ -217,6 +222,10 @@ private:
 
     GstElement *m_encodeBin;
 
+#if GST_CHECK_VERSION(1,0,0)
+    GstVideoInfo m_previewInfo;
+#endif
+
 public:
     bool m_passImage;
     bool m_passPrerollImage;