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Diffstat (limited to 'src/plugins/android/src/mediacapture/qandroidcameraexposurecontrol.cpp')
| -rw-r--r-- | src/plugins/android/src/mediacapture/qandroidcameraexposurecontrol.cpp | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/src/plugins/android/src/mediacapture/qandroidcameraexposurecontrol.cpp b/src/plugins/android/src/mediacapture/qandroidcameraexposurecontrol.cpp new file mode 100644 index 000000000..03bbadb93 --- /dev/null +++ b/src/plugins/android/src/mediacapture/qandroidcameraexposurecontrol.cpp @@ -0,0 +1,227 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: 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. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qandroidcameraexposurecontrol.h" + +#include "qandroidcamerasession.h" +#include "jcamera.h" + +QT_BEGIN_NAMESPACE + +QAndroidCameraExposureControl::QAndroidCameraExposureControl(QAndroidCameraSession *session) + : QCameraExposureControl() + , m_session(session) + , m_minExposureCompensationIndex(0) + , m_maxExposureCompensationIndex(0) + , m_exposureCompensationStep(0.0) + , m_requestedExposureCompensation(0.0) + , m_actualExposureCompensation(0.0) + , m_requestedExposureMode(QCameraExposure::ExposureAuto) + , m_actualExposureMode(QCameraExposure::ExposureAuto) +{ + connect(m_session, SIGNAL(opened()), + this, SLOT(onCameraOpened())); +} + +bool QAndroidCameraExposureControl::isParameterSupported(ExposureParameter parameter) const +{ + switch (parameter) { + case QCameraExposureControl::ISO: + return false; + case QCameraExposureControl::Aperture: + return false; + case QCameraExposureControl::ShutterSpeed: + return false; + case QCameraExposureControl::ExposureCompensation: + return true; + case QCameraExposureControl::FlashPower: + return false; + case QCameraExposureControl::FlashCompensation: + return false; + case QCameraExposureControl::TorchPower: + return false; + case QCameraExposureControl::SpotMeteringPoint: + return false; + case QCameraExposureControl::ExposureMode: + return true; + case QCameraExposureControl::MeteringMode: + return false; + default: + return false; + } +} + +QVariantList QAndroidCameraExposureControl::supportedParameterRange(ExposureParameter parameter, bool *continuous) const +{ + if (!m_session->camera()) + return QVariantList(); + + if (continuous) + *continuous = false; + + if (parameter == QCameraExposureControl::ExposureCompensation) + return m_supportedExposureCompensations; + else if (parameter == QCameraExposureControl::ExposureMode) + return m_supportedExposureModes; + + return QVariantList(); +} + +QVariant QAndroidCameraExposureControl::requestedValue(ExposureParameter parameter) const +{ + if (parameter == QCameraExposureControl::ExposureCompensation) + return QVariant::fromValue(m_requestedExposureCompensation); + else if (parameter == QCameraExposureControl::ExposureMode) + return QVariant::fromValue(m_requestedExposureMode); + + return QVariant(); +} + +QVariant QAndroidCameraExposureControl::actualValue(ExposureParameter parameter) const +{ + if (parameter == QCameraExposureControl::ExposureCompensation) + return QVariant::fromValue(m_actualExposureCompensation); + else if (parameter == QCameraExposureControl::ExposureMode) + return QVariant::fromValue(m_actualExposureMode); + + return QVariant(); +} + +bool QAndroidCameraExposureControl::setValue(ExposureParameter parameter, const QVariant& value) +{ + if (!m_session->camera() || !value.isValid()) + return false; + + if (parameter == QCameraExposureControl::ExposureCompensation) { + m_requestedExposureCompensation = value.toReal(); + emit requestedValueChanged(QCameraExposureControl::ExposureCompensation); + + int expCompIndex = qRound(m_requestedExposureCompensation / m_exposureCompensationStep); + if (expCompIndex >= m_minExposureCompensationIndex + && expCompIndex <= m_maxExposureCompensationIndex) { + m_session->camera()->setExposureCompensation(expCompIndex); + + m_actualExposureCompensation = expCompIndex * m_exposureCompensationStep; + emit actualValueChanged(QCameraExposureControl::ExposureCompensation); + + return true; + } + + } else if (parameter == QCameraExposureControl::ExposureMode) { + m_requestedExposureMode = value.value<QCameraExposure::ExposureMode>(); + emit requestedValueChanged(QCameraExposureControl::ExposureMode); + + if (!m_supportedExposureModes.isEmpty()) { + m_actualExposureMode = m_requestedExposureMode; + + QString sceneMode; + switch (m_requestedExposureMode) { + case QCameraExposure::ExposureAuto: + sceneMode = QLatin1String("auto"); + break; + case QCameraExposure::ExposureSports: + sceneMode = QLatin1String("sports"); + break; + case QCameraExposure::ExposurePortrait: + sceneMode = QLatin1String("portrait"); + break; + case QCameraExposure::ExposureBeach: + sceneMode = QLatin1String("beach"); + break; + case QCameraExposure::ExposureSnow: + sceneMode = QLatin1String("snow"); + break; + case QCameraExposure::ExposureNight: + sceneMode = QLatin1String("night"); + break; + default: + sceneMode = QLatin1String("auto"); + m_actualExposureMode = QCameraExposure::ExposureAuto; + break; + } + + m_session->camera()->setSceneMode(sceneMode); + emit actualValueChanged(QCameraExposureControl::ExposureMode); + + return true; + } + } + + return false; +} + +void QAndroidCameraExposureControl::onCameraOpened() +{ + m_requestedExposureCompensation = m_actualExposureCompensation = 0.0; + m_requestedExposureMode = m_actualExposureMode = QCameraExposure::ExposureAuto; + emit requestedValueChanged(QCameraExposureControl::ExposureCompensation); + emit actualValueChanged(QCameraExposureControl::ExposureCompensation); + emit requestedValueChanged(QCameraExposureControl::ExposureMode); + emit actualValueChanged(QCameraExposureControl::ExposureMode); + + m_minExposureCompensationIndex = m_session->camera()->getMinExposureCompensation(); + m_maxExposureCompensationIndex = m_session->camera()->getMaxExposureCompensation(); + m_exposureCompensationStep = m_session->camera()->getExposureCompensationStep(); + for (int i = m_minExposureCompensationIndex; i <= m_maxExposureCompensationIndex; ++i) + m_supportedExposureCompensations.append(i * m_exposureCompensationStep); + emit parameterRangeChanged(QCameraExposureControl::ExposureCompensation); + + m_supportedExposureModes.clear(); + QStringList sceneModes = m_session->camera()->getSupportedSceneModes(); + for (int i = 0; i < sceneModes.size(); ++i) { + const QString &sceneMode = sceneModes.at(i); + if (sceneMode == QLatin1String("auto")) + m_supportedExposureModes << QVariant::fromValue(QCameraExposure::ExposureAuto); + else if (sceneMode == QLatin1String("beach")) + m_supportedExposureModes << QVariant::fromValue(QCameraExposure::ExposureBeach); + else if (sceneMode == QLatin1String("night")) + m_supportedExposureModes << QVariant::fromValue(QCameraExposure::ExposureNight); + else if (sceneMode == QLatin1String("portrait")) + m_supportedExposureModes << QVariant::fromValue(QCameraExposure::ExposurePortrait); + else if (sceneMode == QLatin1String("snow")) + m_supportedExposureModes << QVariant::fromValue(QCameraExposure::ExposureSnow); + else if (sceneMode == QLatin1String("sports")) + m_supportedExposureModes << QVariant::fromValue(QCameraExposure::ExposureSports); + } + emit parameterRangeChanged(QCameraExposureControl::ExposureMode); +} + +QT_END_NAMESPACE |