diff options
Diffstat (limited to 'src/plugins/android/src/mediacapture/qandroidcameralockscontrol.cpp')
| -rw-r--r-- | src/plugins/android/src/mediacapture/qandroidcameralockscontrol.cpp | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/src/plugins/android/src/mediacapture/qandroidcameralockscontrol.cpp b/src/plugins/android/src/mediacapture/qandroidcameralockscontrol.cpp new file mode 100644 index 000000000..d9f20ec04 --- /dev/null +++ b/src/plugins/android/src/mediacapture/qandroidcameralockscontrol.cpp @@ -0,0 +1,254 @@ +/**************************************************************************** +** +** 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 "qandroidcameralockscontrol.h" + +#include "qandroidcamerasession.h" +#include "jcamera.h" +#include <qtimer.h> + +QT_BEGIN_NAMESPACE + +QAndroidCameraLocksControl::QAndroidCameraLocksControl(QAndroidCameraSession *session) + : QCameraLocksControl() + , m_session(session) + , m_supportedLocks(QCamera::NoLock) + , m_focusLockStatus(QCamera::Unlocked) + , m_exposureLockStatus(QCamera::Unlocked) + , m_whiteBalanceLockStatus(QCamera::Unlocked) +{ + connect(m_session, SIGNAL(opened()), + this, SLOT(onCameraOpened())); + + m_recalculateTimer = new QTimer(this); + m_recalculateTimer->setInterval(1000); + m_recalculateTimer->setSingleShot(true); + connect(m_recalculateTimer, SIGNAL(timeout()), this, SLOT(onRecalculateTimeOut())); +} + +QCamera::LockTypes QAndroidCameraLocksControl::supportedLocks() const +{ + return (QCamera::LockExposure | QCamera::LockWhiteBalance | QCamera::LockFocus); +} + +QCamera::LockStatus QAndroidCameraLocksControl::lockStatus(QCamera::LockType lock) const +{ + if (!m_supportedLocks.testFlag(lock) || !m_session->camera()) + return QCamera::Locked; + + if (lock == QCamera::LockFocus) + return m_focusLockStatus; + + if (lock == QCamera::LockExposure) + return m_exposureLockStatus; + + if (lock == QCamera::LockWhiteBalance) + return m_whiteBalanceLockStatus; + + return QCamera::Locked; +} + +void QAndroidCameraLocksControl::searchAndLock(QCamera::LockTypes locks) +{ + if (!m_session->camera()) + return; + + // filter out unsupported locks + locks &= m_supportedLocks; + + if (locks.testFlag(QCamera::LockFocus)) { + QString focusMode = m_session->camera()->getFocusMode(); + if (focusMode == QLatin1String("auto") + || focusMode == QLatin1String("macro") + || focusMode == QLatin1String("continuous-picture") + || focusMode == QLatin1String("continuous-video")) { + + if (m_focusLockStatus == QCamera::Searching) + m_session->camera()->cancelAutoFocus(); + else + setFocusLockStatus(QCamera::Searching, QCamera::UserRequest); + + m_session->camera()->autoFocus(); + + } else { + setFocusLockStatus(QCamera::Locked, QCamera::LockAcquired); + } + } + + if (locks.testFlag(QCamera::LockExposure) && m_exposureLockStatus != QCamera::Searching) { + if (m_session->camera()->getAutoExposureLock()) { + // if already locked, unlock and give some time to recalculate exposure + m_session->camera()->setAutoExposureLock(false); + setExposureLockStatus(QCamera::Searching, QCamera::UserRequest); + } else { + m_session->camera()->setAutoExposureLock(true); + setExposureLockStatus(QCamera::Locked, QCamera::LockAcquired); + } + } + + if (locks.testFlag(QCamera::LockWhiteBalance) && m_whiteBalanceLockStatus != QCamera::Searching) { + if (m_session->camera()->getAutoWhiteBalanceLock()) { + // if already locked, unlock and give some time to recalculate white balance + m_session->camera()->setAutoWhiteBalanceLock(false); + setWhiteBalanceLockStatus(QCamera::Searching, QCamera::UserRequest); + } else { + m_session->camera()->setAutoWhiteBalanceLock(true); + setWhiteBalanceLockStatus(QCamera::Locked, QCamera::LockAcquired); + } + } + + if (m_exposureLockStatus == QCamera::Searching || m_whiteBalanceLockStatus == QCamera::Searching) + m_recalculateTimer->start(); +} + +void QAndroidCameraLocksControl::unlock(QCamera::LockTypes locks) +{ + if (!m_session->camera()) + return; + + if (m_recalculateTimer->isActive()) + m_recalculateTimer->stop(); + + // filter out unsupported locks + locks &= m_supportedLocks; + + if (locks.testFlag(QCamera::LockFocus)) { + m_session->camera()->cancelAutoFocus(); + setFocusLockStatus(QCamera::Unlocked, QCamera::UserRequest); + } + + if (locks.testFlag(QCamera::LockExposure)) { + m_session->camera()->setAutoExposureLock(false); + setExposureLockStatus(QCamera::Unlocked, QCamera::UserRequest); + } + + if (locks.testFlag(QCamera::LockWhiteBalance)) { + m_session->camera()->setAutoWhiteBalanceLock(false); + setWhiteBalanceLockStatus(QCamera::Unlocked, QCamera::UserRequest); + } +} + +void QAndroidCameraLocksControl::onCameraOpened() +{ + m_supportedLocks = QCamera::NoLock; + m_focusLockStatus = QCamera::Unlocked; + m_exposureLockStatus = QCamera::Unlocked; + m_whiteBalanceLockStatus = QCamera::Unlocked; + + // check if focus lock is supported + QStringList focusModes = m_session->camera()->getSupportedFocusModes(); + for (int i = 0; i < focusModes.size(); ++i) { + const QString &focusMode = focusModes.at(i); + if (focusMode == QLatin1String("auto") + || focusMode == QLatin1String("continuous-picture") + || focusMode == QLatin1String("continuous-video") + || focusMode == QLatin1String("macro")) { + + m_supportedLocks |= QCamera::LockFocus; + setFocusLockStatus(QCamera::Unlocked, QCamera::UserRequest); + + connect(m_session->camera(), SIGNAL(autoFocusComplete(bool)), + this, SLOT(onCameraAutoFocusComplete(bool))); + + break; + } + } + + if (m_session->camera()->isAutoExposureLockSupported()) { + m_supportedLocks |= QCamera::LockExposure; + setExposureLockStatus(QCamera::Unlocked, QCamera::UserRequest); + } + + if (m_session->camera()->isAutoWhiteBalanceLockSupported()) { + m_supportedLocks |= QCamera::LockWhiteBalance; + setWhiteBalanceLockStatus(QCamera::Unlocked, QCamera::UserRequest); + + connect(m_session->camera(), SIGNAL(whiteBalanceChanged()), + this, SLOT(onWhiteBalanceChanged())); + } +} + +void QAndroidCameraLocksControl::onCameraAutoFocusComplete(bool success) +{ + m_focusLockStatus = success ? QCamera::Locked : QCamera::Unlocked; + QCamera::LockChangeReason reason = success ? QCamera::LockAcquired : QCamera::LockFailed; + emit lockStatusChanged(QCamera::LockFocus, m_focusLockStatus, reason); +} + +void QAndroidCameraLocksControl::onRecalculateTimeOut() +{ + if (m_exposureLockStatus == QCamera::Searching) { + m_session->camera()->setAutoExposureLock(true); + setExposureLockStatus(QCamera::Locked, QCamera::LockAcquired); + } + + if (m_whiteBalanceLockStatus == QCamera::Searching) { + m_session->camera()->setAutoWhiteBalanceLock(true); + setWhiteBalanceLockStatus(QCamera::Locked, QCamera::LockAcquired); + } +} + +void QAndroidCameraLocksControl::onWhiteBalanceChanged() +{ + // changing the white balance mode releases the white balance lock + if (m_whiteBalanceLockStatus != QCamera::Unlocked) + setWhiteBalanceLockStatus(QCamera::Unlocked, QCamera::LockLost); +} + +void QAndroidCameraLocksControl::setFocusLockStatus(QCamera::LockStatus status, QCamera::LockChangeReason reason) +{ + m_focusLockStatus = status; + emit lockStatusChanged(QCamera::LockFocus, m_focusLockStatus, reason); +} + +void QAndroidCameraLocksControl::setWhiteBalanceLockStatus(QCamera::LockStatus status, QCamera::LockChangeReason reason) +{ + m_whiteBalanceLockStatus = status; + emit lockStatusChanged(QCamera::LockWhiteBalance, m_whiteBalanceLockStatus, reason); +} + +void QAndroidCameraLocksControl::setExposureLockStatus(QCamera::LockStatus status, QCamera::LockChangeReason reason) +{ + m_exposureLockStatus = status; + emit lockStatusChanged(QCamera::LockExposure, m_exposureLockStatus, reason); +} + +QT_END_NAMESPACE |