--- /dev/null
+/****************************************************************************
+**
+** Copyright (C) 2015 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** 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
+** a written agreement between you and Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights. These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef AVFCAMERAZOOMCONTROL_H
+#define AVFCAMERAZOOMCONTROL_H
+
+#include <QtMultimedia/qcamerazoomcontrol.h>
+#include <QtMultimedia/qcamera.h>
+
+#include <AVFoundation/AVFoundation.h>
+
+QT_BEGIN_NAMESPACE
+
+class AVFCameraService;
+class AVFCameraSession;
+class AVFCameraControl;
+
+class AVFCameraZoomControl : public QCameraZoomControl
+{
+ Q_OBJECT
+public:
+ AVFCameraZoomControl(AVFCameraService *service);
+
+ qreal maximumOpticalZoom() const Q_DECL_OVERRIDE;
+ qreal maximumDigitalZoom() const Q_DECL_OVERRIDE;
+
+ qreal requestedOpticalZoom() const Q_DECL_OVERRIDE;
+ qreal requestedDigitalZoom() const Q_DECL_OVERRIDE;
+ qreal currentOpticalZoom() const Q_DECL_OVERRIDE;
+ qreal currentDigitalZoom() const Q_DECL_OVERRIDE;
+
+ void zoomTo(qreal optical, qreal digital) Q_DECL_OVERRIDE;
+
+private Q_SLOTS:
+ void cameraStateChanged();
+
+private:
+ void zoomToRequestedDigital();
+
+ AVFCameraSession *m_session;
+
+ CGFloat m_maxZoomFactor;
+ CGFloat m_zoomFactor;
+ CGFloat m_requestedZoomFactor;
+};
+
+QT_END_NAMESPACE
+
+#endif
--- /dev/null
+/****************************************************************************
+**
+** Copyright (C) 2015 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** 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
+** a written agreement between you and Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights. These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "avfcamerazoomcontrol.h"
+#include "avfconfigurationlock.h"
+#include "avfcameraservice.h"
+#include "avfcamerasession.h"
+#include "avfcameracontrol.h"
+#include "avfcameradebug.h"
+
+#include <QtCore/qsysinfo.h>
+#include <QtCore/qglobal.h>
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+AVFCameraZoomControl::AVFCameraZoomControl(AVFCameraService *service)
+ : m_session(service->session()),
+ m_maxZoomFactor(1.),
+ m_zoomFactor(1.),
+ m_requestedZoomFactor(1.)
+{
+ Q_ASSERT(m_session);
+ connect(m_session, SIGNAL(stateChanged(QCamera::State)),
+ SLOT(cameraStateChanged()));
+}
+
+qreal AVFCameraZoomControl::maximumOpticalZoom() const
+{
+ // Not supported.
+ return 1.;
+}
+
+qreal AVFCameraZoomControl::maximumDigitalZoom() const
+{
+ return m_maxZoomFactor;
+}
+
+qreal AVFCameraZoomControl::requestedOpticalZoom() const
+{
+ // Not supported.
+ return 1;
+}
+
+qreal AVFCameraZoomControl::requestedDigitalZoom() const
+{
+ return m_requestedZoomFactor;
+}
+
+qreal AVFCameraZoomControl::currentOpticalZoom() const
+{
+ // Not supported.
+ return 1.;
+}
+
+qreal AVFCameraZoomControl::currentDigitalZoom() const
+{
+ return m_zoomFactor;
+}
+
+void AVFCameraZoomControl::zoomTo(qreal optical, qreal digital)
+{
+ Q_UNUSED(optical)
+ Q_UNUSED(digital)
+#if QT_IOS_PLATFORM_SDK_EQUAL_OR_ABOVE(__IPHONE_7_0)
+ if (QSysInfo::MacintoshVersion < QSysInfo::MV_IOS_7_0)
+ return;
+
+ if (qFuzzyCompare(CGFloat(digital), m_requestedZoomFactor))
+ return;
+
+ m_requestedZoomFactor = digital;
+ Q_EMIT requestedDigitalZoomChanged(digital);
+
+ zoomToRequestedDigital();
+#endif
+}
+
+void AVFCameraZoomControl::cameraStateChanged()
+{
+#if QT_IOS_PLATFORM_SDK_EQUAL_OR_ABOVE(__IPHONE_7_0)
+ if (QSysInfo::MacintoshVersion < QSysInfo::MV_IOS_7_0)
+ return;
+
+ const QCamera::State state = m_session->state();
+ if (state != QCamera::ActiveState) {
+ if (state == QCamera::UnloadedState && m_maxZoomFactor > 1.) {
+ m_maxZoomFactor = 1.;
+ Q_EMIT maximumDigitalZoomChanged(1.);
+ }
+ return;
+ }
+
+ AVCaptureDevice *captureDevice = m_session->videoCaptureDevice();
+ if (!captureDevice || !captureDevice.activeFormat) {
+ qDebugCamera() << Q_FUNC_INFO << "camera state is active, but"
+ << "video capture device and/or active format is nil";
+ return;
+ }
+
+ if (captureDevice.activeFormat.videoMaxZoomFactor > 1.
+ && !qFuzzyCompare(m_maxZoomFactor, captureDevice.activeFormat.videoMaxZoomFactor)) {
+ m_maxZoomFactor = captureDevice.activeFormat.videoMaxZoomFactor;
+
+ Q_EMIT maximumDigitalZoomChanged(m_maxZoomFactor);
+ } else if (!qFuzzyCompare(m_maxZoomFactor, CGFloat(1.))) {
+ m_maxZoomFactor = 1.;
+
+ Q_EMIT maximumDigitalZoomChanged(1.);
+ }
+
+ zoomToRequestedDigital();
+#endif
+}
+
+void AVFCameraZoomControl::zoomToRequestedDigital()
+{
+#if QT_IOS_PLATFORM_SDK_EQUAL_OR_ABOVE(__IPHONE_7_0)
+ if (QSysInfo::MacintoshVersion < QSysInfo::MV_IOS_7_0)
+ return;
+
+ AVCaptureDevice *captureDevice = m_session->videoCaptureDevice();
+ if (!captureDevice || !captureDevice.activeFormat)
+ return;
+
+ if (qFuzzyCompare(captureDevice.activeFormat.videoMaxZoomFactor, CGFloat(1.)))
+ return;
+
+ const CGFloat clampedZoom = qBound(CGFloat(1.), m_requestedZoomFactor,
+ captureDevice.activeFormat.videoMaxZoomFactor);
+ const CGFloat deviceZoom = captureDevice.videoZoomFactor;
+ if (qFuzzyCompare(clampedZoom, deviceZoom)) {
+ // Nothing to set, but check if a signal must be emitted:
+ if (!qFuzzyCompare(m_zoomFactor, deviceZoom)) {
+ m_zoomFactor = deviceZoom;
+ Q_EMIT currentDigitalZoomChanged(deviceZoom);
+ }
+ return;
+ }
+
+ const AVFConfigurationLock lock(captureDevice);
+ if (!lock) {
+ qDebugCamera() << Q_FUNC_INFO << "failed to lock for configuration";
+ return;
+ }
+
+ captureDevice.videoZoomFactor = clampedZoom;
+
+ if (!qFuzzyCompare(clampedZoom, m_zoomFactor)) {
+ m_zoomFactor = clampedZoom;
+ Q_EMIT currentDigitalZoomChanged(clampedZoom);
+ }
+#endif
+}
+
+QT_END_NAMESPACE
+
+#include "moc_avfcamerazoomcontrol.cpp"
projects / platform / upstream / qtmultimedia.git / commitdiff