e48546b44f
Exposure, Flash, Focus and Locks controls were always initialized, even when the GstPhotography interface was not available (on desktop for example), causing some warnings and fooling the user in believing that these features were available. These controls are now lazily initialized and only when GstPhotography is available. The zoom control is not compile-checked anymore since it doesn't actually require GstPhotography. Change-Id: I5e8315d796dd920c9c29ccfa4155707f5f0fd7dc Reviewed-by: Christian Stromme <christian.stromme@theqtcompany.com>
112 lines
3.3 KiB
C++
112 lines
3.3 KiB
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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**
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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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** 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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#include "camerabinzoom.h"
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#include "camerabinsession.h"
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#define ZOOM_PROPERTY "zoom"
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#define MAX_ZOOM_PROPERTY "max-zoom"
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QT_BEGIN_NAMESPACE
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CameraBinZoom::CameraBinZoom(CameraBinSession *session)
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: QCameraZoomControl(session)
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, m_session(session)
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, m_requestedOpticalZoom(1.0)
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, m_requestedDigitalZoom(1.0)
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{
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}
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CameraBinZoom::~CameraBinZoom()
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{
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}
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qreal CameraBinZoom::maximumOpticalZoom() const
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{
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return 1.0;
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}
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qreal CameraBinZoom::maximumDigitalZoom() const
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{
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gfloat zoomFactor = 1.0;
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g_object_get(GST_BIN(m_session->cameraBin()), MAX_ZOOM_PROPERTY, &zoomFactor, NULL);
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return zoomFactor;
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}
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qreal CameraBinZoom::requestedDigitalZoom() const
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{
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return m_requestedDigitalZoom;
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}
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qreal CameraBinZoom::requestedOpticalZoom() const
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{
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return m_requestedOpticalZoom;
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}
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qreal CameraBinZoom::currentOpticalZoom() const
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{
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return 1.0;
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}
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qreal CameraBinZoom::currentDigitalZoom() const
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{
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gfloat zoomFactor = 1.0;
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g_object_get(GST_BIN(m_session->cameraBin()), ZOOM_PROPERTY, &zoomFactor, NULL);
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return zoomFactor;
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}
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void CameraBinZoom::zoomTo(qreal optical, qreal digital)
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{
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qreal oldDigitalZoom = currentDigitalZoom();
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if (m_requestedDigitalZoom != digital) {
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m_requestedDigitalZoom = digital;
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emit requestedDigitalZoomChanged(digital);
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}
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if (m_requestedOpticalZoom != optical) {
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m_requestedOpticalZoom = optical;
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emit requestedOpticalZoomChanged(optical);
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}
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digital = qBound(qreal(1.0), digital, maximumDigitalZoom());
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g_object_set(GST_BIN(m_session->cameraBin()), ZOOM_PROPERTY, digital, NULL);
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qreal newDigitalZoom = currentDigitalZoom();
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if (!qFuzzyCompare(oldDigitalZoom, newDigitalZoom))
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emit currentDigitalZoomChanged(digital);
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}
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QT_END_NAMESPACE
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