implement QVideoProbe for iOS camera

This commit allows to use QVideoProbe for QCamera on iOS.
The logic for the implementation is taken from the Android plugin.

[ChangeLog][Platform Specific Changes][iOS]
QVideoProbe support is implemented for QCamera on iOS

Change-Id: I1db50defa8518287c4f1f3cc6602881702a95849
Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/src/plugins/avfoundation/camera/avfcamerasession.mm b/src/plugins/avfoundation/camera/avfcamerasession.mm
index a72ef5041..3c58c25d6 100644
--- a/src/plugins/avfoundation/camera/avfcamerasession.mm
+++ b/src/plugins/avfoundation/camera/avfcamerasession.mm
@@ -46,6 +46,7 @@
 #include "avfvideorenderercontrol.h"
 #include "avfvideodevicecontrol.h"
 #include "avfaudioinputselectorcontrol.h"
+#include "avfmediavideoprobecontrol.h"
 
 #include <CoreFoundation/CoreFoundation.h>
 #include <Foundation/Foundation.h>
@@ -371,4 +372,30 @@ void AVFCameraSession::attachInputDevices()
     }
 }
 
+void AVFCameraSession::addProbe(AVFMediaVideoProbeControl *probe)
+{
+    m_videoProbesMutex.lock();
+    if (probe)
+        m_videoProbes << probe;
+    m_videoProbesMutex.unlock();
+}
+
+void AVFCameraSession::removeProbe(AVFMediaVideoProbeControl *probe)
+{
+    m_videoProbesMutex.lock();
+    m_videoProbes.remove(probe);
+    m_videoProbesMutex.unlock();
+}
+
+void AVFCameraSession::onCameraFrameFetched(const QVideoFrame &frame)
+{
+    m_videoProbesMutex.lock();
+    QSet<AVFMediaVideoProbeControl *>::const_iterator i = m_videoProbes.constBegin();
+    while (i != m_videoProbes.constEnd()) {
+        (*i)->newFrameProbed(frame);
+        ++i;
+    }
+    m_videoProbesMutex.unlock();
+}
+
 #include "moc_avfcamerasession.cpp"