diff options
Diffstat (limited to 'src/plugins/qnx/camera/bbcameralockscontrol.cpp')
| -rw-r--r-- | src/plugins/qnx/camera/bbcameralockscontrol.cpp | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/src/plugins/qnx/camera/bbcameralockscontrol.cpp b/src/plugins/qnx/camera/bbcameralockscontrol.cpp new file mode 100644 index 000000000..d2537361c --- /dev/null +++ b/src/plugins/qnx/camera/bbcameralockscontrol.cpp @@ -0,0 +1,258 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Research In Motion +** 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 "bbcameralockscontrol.h" + +#include "bbcamerasession.h" + +QT_BEGIN_NAMESPACE + +BbCameraLocksControl::BbCameraLocksControl(BbCameraSession *session, QObject *parent) + : QCameraLocksControl(parent) + , m_session(session) + , m_locksApplyMode(IndependentMode) + , m_focusLockStatus(QCamera::Unlocked) + , m_exposureLockStatus(QCamera::Unlocked) + , m_whiteBalanceLockStatus(QCamera::Unlocked) + , m_currentLockTypes(QCamera::NoLock) + , m_supportedLockTypes(QCamera::NoLock) +{ + connect(m_session, SIGNAL(cameraOpened()), SLOT(cameraOpened())); + connect(m_session, SIGNAL(focusStatusChanged(int)), SLOT(focusStatusChanged(int))); +} + +QCamera::LockTypes BbCameraLocksControl::supportedLocks() const +{ + return (QCamera::LockFocus | QCamera::LockExposure | QCamera::LockWhiteBalance); +} + +QCamera::LockStatus BbCameraLocksControl::lockStatus(QCamera::LockType lock) const +{ + if (!m_supportedLockTypes.testFlag(lock) || (m_session->handle() == CAMERA_HANDLE_INVALID)) + return QCamera::Locked; + + switch (lock) { + case QCamera::LockExposure: + return m_exposureLockStatus; + case QCamera::LockWhiteBalance: + return m_whiteBalanceLockStatus; + case QCamera::LockFocus: + return m_focusLockStatus; + default: + return QCamera::Locked; + } +} + +void BbCameraLocksControl::searchAndLock(QCamera::LockTypes locks) +{ + if (m_session->handle() == CAMERA_HANDLE_INVALID) + return; + + // filter out unsupported locks + locks &= m_supportedLockTypes; + + m_currentLockTypes |= locks; + + uint32_t lockModes = CAMERA_3A_NONE; + + switch (m_locksApplyMode) { + case IndependentMode: + if (m_currentLockTypes & QCamera::LockExposure) + lockModes |= CAMERA_3A_AUTOEXPOSURE; + if (m_currentLockTypes & QCamera::LockWhiteBalance) + lockModes |= CAMERA_3A_AUTOWHITEBALANCE; + if (m_currentLockTypes & QCamera::LockFocus) + lockModes |= CAMERA_3A_AUTOFOCUS; + break; + case FocusExposureBoundMode: + if ((m_currentLockTypes & QCamera::LockExposure) || (m_currentLockTypes & QCamera::LockFocus)) + lockModes = (CAMERA_3A_AUTOEXPOSURE | CAMERA_3A_AUTOFOCUS); + break; + case AllBoundMode: + lockModes = (CAMERA_3A_AUTOEXPOSURE | CAMERA_3A_AUTOFOCUS | CAMERA_3A_AUTOWHITEBALANCE); + break; + case FocusOnlyMode: + lockModes = CAMERA_3A_AUTOFOCUS; + break; + } + + const camera_error_t result = camera_set_3a_lock(m_session->handle(), lockModes); + + if (result != CAMERA_EOK) { + qWarning() << "Unable to set lock modes:" << result; + } else { + if (lockModes & CAMERA_3A_AUTOFOCUS) { + // handled by focusStatusChanged() + } + + if (lockModes & CAMERA_3A_AUTOEXPOSURE) { + m_exposureLockStatus = QCamera::Locked; + emit lockStatusChanged(QCamera::LockExposure, QCamera::Locked, QCamera::LockAcquired); + } + + if (lockModes & CAMERA_3A_AUTOWHITEBALANCE) { + m_whiteBalanceLockStatus = QCamera::Locked; + emit lockStatusChanged(QCamera::LockWhiteBalance, QCamera::Locked, QCamera::LockAcquired); + } + } +} + +void BbCameraLocksControl::unlock(QCamera::LockTypes locks) +{ + // filter out unsupported locks + locks &= m_supportedLockTypes; + + m_currentLockTypes &= ~locks; + + uint32_t lockModes = CAMERA_3A_NONE; + + switch (m_locksApplyMode) { + case IndependentMode: + if (m_currentLockTypes & QCamera::LockExposure) + lockModes |= CAMERA_3A_AUTOEXPOSURE; + if (m_currentLockTypes & QCamera::LockWhiteBalance) + lockModes |= CAMERA_3A_AUTOWHITEBALANCE; + if (m_currentLockTypes & QCamera::LockFocus) + lockModes |= CAMERA_3A_AUTOFOCUS; + break; + case FocusExposureBoundMode: + if ((m_currentLockTypes & QCamera::LockExposure) || (m_currentLockTypes & QCamera::LockFocus)) + lockModes = (CAMERA_3A_AUTOEXPOSURE | CAMERA_3A_AUTOFOCUS); + break; + case AllBoundMode: + lockModes = (CAMERA_3A_AUTOEXPOSURE | CAMERA_3A_AUTOFOCUS | CAMERA_3A_AUTOWHITEBALANCE); + break; + case FocusOnlyMode: + lockModes = CAMERA_3A_AUTOFOCUS; + break; + } + + const camera_error_t result = camera_set_3a_lock(m_session->handle(), lockModes); + + if (result != CAMERA_EOK) { + qWarning() << "Unable to set lock modes:" << result; + } else { + if (locks.testFlag(QCamera::LockFocus)) { + // handled by focusStatusChanged() + } + + if (locks.testFlag(QCamera::LockExposure)) { + m_exposureLockStatus = QCamera::Unlocked; + emit lockStatusChanged(QCamera::LockExposure, QCamera::Unlocked, QCamera::UserRequest); + } + + if (locks.testFlag(QCamera::LockWhiteBalance)) { + m_whiteBalanceLockStatus = QCamera::Unlocked; + emit lockStatusChanged(QCamera::LockWhiteBalance, QCamera::Unlocked, QCamera::UserRequest); + } + } +} + +void BbCameraLocksControl::cameraOpened() +{ + // retrieve information about lock apply modes + int supported = 0; + uint32_t modes[20]; + + const camera_error_t result = camera_get_3a_lock_modes(m_session->handle(), 20, &supported, modes); + + if (result == CAMERA_EOK) { + // see API documentation of camera_get_3a_lock_modes for explanation of case discrimination below + if (supported == 4) { + m_locksApplyMode = IndependentMode; + } else if (supported == 3) { + m_locksApplyMode = FocusExposureBoundMode; + } else if (supported == 2) { + if (modes[0] == (CAMERA_3A_AUTOFOCUS | CAMERA_3A_AUTOEXPOSURE | CAMERA_3A_AUTOWHITEBALANCE)) + m_locksApplyMode = AllBoundMode; + else + m_locksApplyMode = FocusOnlyMode; + } + } + + // retrieve information about supported lock types + m_supportedLockTypes = QCamera::NoLock; + + if (camera_has_feature(m_session->handle(), CAMERA_FEATURE_AUTOFOCUS)) + m_supportedLockTypes |= QCamera::LockFocus; + + if (camera_has_feature(m_session->handle(), CAMERA_FEATURE_AUTOEXPOSURE)) + m_supportedLockTypes |= QCamera::LockExposure; + + if (camera_has_feature(m_session->handle(), CAMERA_FEATURE_AUTOWHITEBALANCE)) + m_supportedLockTypes |= QCamera::LockWhiteBalance; + + m_focusLockStatus = QCamera::Unlocked; + m_exposureLockStatus = QCamera::Unlocked; + m_whiteBalanceLockStatus = QCamera::Unlocked; +} + +void BbCameraLocksControl::focusStatusChanged(int value) +{ + const camera_focusstate_t focusState = static_cast<camera_focusstate_t>(value); + + switch (focusState) { + case CAMERA_FOCUSSTATE_NONE: + m_focusLockStatus = QCamera::Unlocked; + emit lockStatusChanged(QCamera::LockFocus, QCamera::Unlocked, QCamera::UserRequest); + break; + case CAMERA_FOCUSSTATE_WAITING: + case CAMERA_FOCUSSTATE_SEARCHING: + m_focusLockStatus = QCamera::Searching; + emit lockStatusChanged(QCamera::LockFocus, QCamera::Searching, QCamera::UserRequest); + break; + case CAMERA_FOCUSSTATE_FAILED: + m_focusLockStatus = QCamera::Unlocked; + emit lockStatusChanged(QCamera::LockFocus, QCamera::Unlocked, QCamera::LockFailed); + break; + case CAMERA_FOCUSSTATE_LOCKED: + m_focusLockStatus = QCamera::Locked; + emit lockStatusChanged(QCamera::LockFocus, QCamera::Locked, QCamera::LockAcquired); + break; + case CAMERA_FOCUSSTATE_SCENECHANGE: + m_focusLockStatus = QCamera::Unlocked; + emit lockStatusChanged(QCamera::LockFocus, QCamera::Unlocked, QCamera::LockTemporaryLost); + break; + default: + break; + } +} + +QT_END_NAMESPACE |