9b5a67d810
Retrieving the supported viewfinder settings don't actually require a video surface, we just need a capture device. The supported settings can now be retrieved without calling QCamera::setSurface(). More generally, all viewfinder settings that don't require a video surface can now be gotten/set before calling setSurface(). Task-number: QTBUG-49170 Change-Id: I39b14eeb40517a9ba399748b5778be8bbc8cfcda Reviewed-by: Timur Pocheptsov <timur.pocheptsov@theqtcompany.com>
112 lines
4.2 KiB
Objective-C
112 lines
4.2 KiB
Objective-C
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL21$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef AVFCAMERAVIEWFINDERSETTINGSCONTROL_H
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#define AVFCAMERAVIEWFINDERSETTINGSCONTROL_H
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#include <QtMultimedia/qcameraviewfindersettingscontrol.h>
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#include <QtMultimedia/qcameraviewfindersettings.h>
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#include <QtMultimedia/qvideoframe.h>
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#include <QtCore/qpointer.h>
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#include <QtCore/qglobal.h>
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#include <QtCore/qsize.h>
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@class AVCaptureDevice;
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@class AVCaptureVideoDataOutput;
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@class AVCaptureConnection;
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@class AVCaptureDeviceFormat;
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QT_BEGIN_NAMESPACE
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class AVFCameraSession;
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class AVFCameraService;
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class AVFCameraViewfinderSettingsControl2 : public QCameraViewfinderSettingsControl2
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{
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Q_OBJECT
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friend class AVFCameraSession;
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friend class AVFCameraViewfinderSettingsControl;
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public:
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AVFCameraViewfinderSettingsControl2(AVFCameraService *service);
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QList<QCameraViewfinderSettings> supportedViewfinderSettings() const Q_DECL_OVERRIDE;
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QCameraViewfinderSettings viewfinderSettings() const Q_DECL_OVERRIDE;
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void setViewfinderSettings(const QCameraViewfinderSettings &settings) Q_DECL_OVERRIDE;
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// "Converters":
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static QVideoFrame::PixelFormat QtPixelFormatFromCVFormat(unsigned avPixelFormat);
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static bool CVPixelFormatFromQtFormat(QVideoFrame::PixelFormat qtFormat, unsigned &conv);
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private:
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void setResolution(const QSize &resolution);
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void setFramerate(qreal minFPS, qreal maxFPS, bool useActive);
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void setPixelFormat(QVideoFrame::PixelFormat newFormat);
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AVCaptureDeviceFormat *findBestFormatMatch(const QCameraViewfinderSettings &settings) const;
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QVector<QVideoFrame::PixelFormat> viewfinderPixelFormats() const;
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bool convertPixelFormatIfSupported(QVideoFrame::PixelFormat format, unsigned &avfFormat) const;
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void applySettings();
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QCameraViewfinderSettings requestedSettings() const;
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AVCaptureConnection *videoConnection() const;
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AVFCameraService *m_service;
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QCameraViewfinderSettings m_settings;
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};
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class AVFCameraViewfinderSettingsControl : public QCameraViewfinderSettingsControl
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{
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Q_OBJECT
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public:
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AVFCameraViewfinderSettingsControl(AVFCameraService *service);
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bool isViewfinderParameterSupported(ViewfinderParameter parameter) const Q_DECL_OVERRIDE;
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QVariant viewfinderParameter(ViewfinderParameter parameter) const Q_DECL_OVERRIDE;
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void setViewfinderParameter(ViewfinderParameter parameter, const QVariant &value) Q_DECL_OVERRIDE;
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private:
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void setResolution(const QVariant &resolution);
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void setAspectRatio(const QVariant &aspectRatio);
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void setFrameRate(const QVariant &fps, bool max);
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void setPixelFormat(const QVariant &pf);
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bool initSettingsControl() const;
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AVFCameraService *m_service;
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mutable QPointer<AVFCameraViewfinderSettingsControl2> m_settingsControl;
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};
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QT_END_NAMESPACE
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#endif
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