Image encoder control - version for OS X/iOS

QImageEncoderControl - implementation for AVFoundation plugin (OS X/iOS,
at the moment iOS >= 7.0).

Change-Id: Ibc2c3ae48252dd4698e263f5abca5c328482d5e7
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>

src/plugins/avfoundation/camera/avfimageencodercontrol.h

@@ -0,0 +1,77 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
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+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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+** $QT_END_LICENSE$
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+****************************************************************************/
+
+#ifndef AVFIMAGEENCODERCONTROL_H
+#define AVFIMAGEENCODERCONTROL_H
+
+#include <QtMultimedia/qmediaencodersettings.h>
+#include <QtMultimedia/qimageencodercontrol.h>
+
+#include <QtCore/qglobal.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qlist.h>
+
+@class AVCaptureDeviceFormat;
+
+QT_BEGIN_NAMESPACE
+
+class AVFCameraService;
+
+class AVFImageEncoderControl : public QImageEncoderControl
+{
+    Q_OBJECT
+
+    friend class AVFCameraSession;
+public:
+    AVFImageEncoderControl(AVFCameraService *service);
+
+    QStringList supportedImageCodecs() const Q_DECL_OVERRIDE;
+    QString imageCodecDescription(const QString &codecName) const Q_DECL_OVERRIDE;
+    QList<QSize> supportedResolutions(const QImageEncoderSettings &settings,
+                                      bool *continuous) const Q_DECL_OVERRIDE;
+    QImageEncoderSettings imageSettings() const Q_DECL_OVERRIDE;
+    void setImageSettings(const QImageEncoderSettings &settings) Q_DECL_OVERRIDE;
+
+private:
+    AVFCameraService *m_service;
+    QImageEncoderSettings m_settings;
+
+    void applySettings();
+    bool videoCaptureDeviceIsValid() const;
+};
+
+QSize qt_image_high_resolution(AVCaptureDeviceFormat *fomat);
+
+QT_END_NAMESPACE
+
+#endif