Video asset writer for iOS

AVFoundation on iOS lacks the ability to use AVCaptureVideoDataOutput and
AVCaptureMovieFileOutput simultaneously. Right now viewfinder stops working
as soon as we add movie file output. The only workaround
we have now is to write video/audio 'maually' - creating asset writer
and feeding it with audio/video samples.

Change-Id: I33a63546783279c545f0433b5051287269825d3f
Task-number: QTBUG-37655
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/src/plugins/avfoundation/camera/avfcameraservice.mm b/src/plugins/avfoundation/camera/avfcameraservice.mm
index f163e1299..fd473b37b 100644
--- a/src/plugins/avfoundation/camera/avfcameraservice.mm
+++ b/src/plugins/avfoundation/camera/avfcameraservice.mm
@@ -56,6 +56,7 @@
 
 #ifdef Q_OS_IOS
 #include "avfcamerazoomcontrol.h"
+#include "avfmediarecordercontrol_ios.h"
 #endif
 
 #include <private/qmediaplaylistnavigator_p.h>
@@ -74,7 +75,14 @@ AVFCameraService::AVFCameraService(QObject *parent):
     m_audioInputSelectorControl = new AVFAudioInputSelectorControl(this);
 
     m_metaDataControl = new AVFCameraMetaDataControl(this);
+#ifndef Q_OS_IOS
+    // This will connect a slot to 'captureModeChanged'
+    // and will break viewfinder by attaching AVCaptureMovieFileOutput
+    // in this slot.
     m_recorderControl = new AVFMediaRecorderControl(this);
+#else
+    m_recorderControl = new AVFMediaRecorderControlIOS(this);
+#endif
     m_imageCaptureControl = new AVFImageCaptureControl(this);
     m_cameraFocusControl = new AVFCameraFocusControl(this);
     m_cameraExposureControl = 0;
@@ -97,6 +105,10 @@ AVFCameraService::~AVFCameraService()
 {
     m_cameraControl->setState(QCamera::UnloadedState);
 
+#ifdef Q_OS_IOS
+    delete m_recorderControl;
+#endif
+
     if (m_videoOutput) {
         m_session->setVideoOutput(0);
         delete m_videoOutput;
@@ -205,4 +217,23 @@ void AVFCameraService::releaseControl(QMediaControl *control)
 
 }
 
+AVFMediaRecorderControl *AVFCameraService::recorderControl() const
+{
+#ifdef Q_OS_IOS
+    return 0;
+#else
+    return static_cast<AVFMediaRecorderControl *>(m_recorderControl);
+#endif
+}
+
+AVFMediaRecorderControlIOS *AVFCameraService::recorderControlIOS() const
+{
+#ifdef Q_OS_OSX
+    return 0;
+#else
+    return static_cast<AVFMediaRecorderControlIOS *>(m_recorderControl);
+#endif
+}
+
+
 #include "moc_avfcameraservice.cpp"