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Diffstat (limited to 'src/plugins/simulator/camera/simulatorcameraexposurecontrol.cpp')
| -rw-r--r-- | src/plugins/simulator/camera/simulatorcameraexposurecontrol.cpp | 502 |
1 files changed, 502 insertions, 0 deletions
diff --git a/src/plugins/simulator/camera/simulatorcameraexposurecontrol.cpp b/src/plugins/simulator/camera/simulatorcameraexposurecontrol.cpp new file mode 100644 index 000000000..d99d521d1 --- /dev/null +++ b/src/plugins/simulator/camera/simulatorcameraexposurecontrol.cpp @@ -0,0 +1,502 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt Mobility Components. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** 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, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtCore/qstring.h> + +#include "simulatorcameraexposurecontrol.h" +#include "simulatorcamerasession.h" + +SimulatorCameraExposureControl::SimulatorCameraExposureControl(SimulatorCameraSession *session, QObject *parent) : + QCameraExposureControl(parent), + mExposureMode(QCameraExposure::ExposureAuto), + mMeteringMode(QCameraExposure::MeteringAverage), + mSession(session), + mSettings(0) +{ + mSettings = mSession->settings(); + + connect(mSettings, SIGNAL(apertureChanged()), this, SLOT(apertureChanged())); + connect(mSettings, SIGNAL(apertureRangeChanged()), this, SLOT(apertureRangeChanged())); + connect(mSettings, SIGNAL(shutterSpeedChanged()), this, SLOT(shutterSpeedChanged())); + connect(mSettings, SIGNAL(isoSensitivityChanged()), this, SLOT(isoSensitivityChanged())); +} + +SimulatorCameraExposureControl::~SimulatorCameraExposureControl() +{ +} + +void SimulatorCameraExposureControl::apertureChanged() +{ + emit exposureParameterChanged(QCameraExposureControl::Aperture); +} + +void SimulatorCameraExposureControl::apertureRangeChanged() +{ + emit exposureParameterRangeChanged(QCameraExposureControl::Aperture); +} + +void SimulatorCameraExposureControl::shutterSpeedChanged() +{ + emit exposureParameterChanged(QCameraExposureControl::ShutterSpeed); +} + +void SimulatorCameraExposureControl::isoSensitivityChanged() +{ + emit exposureParameterChanged(QCameraExposureControl::ISO); +} + +QCameraExposure::ExposureMode SimulatorCameraExposureControl::exposureMode() const +{ + return mExposureMode; +} + +void SimulatorCameraExposureControl::setExposureMode(QCameraExposure::ExposureMode mode) +{ + if (isExposureModeSupported(mode)) + mExposureMode = mode; +} + +bool SimulatorCameraExposureControl::isExposureModeSupported(QCameraExposure::ExposureMode mode) const +{ + switch (mode) { + case QCameraExposure::ExposureAuto: + case QCameraExposure::ExposureManual: + return true; + default: + return false; + } + + return false; +} + +QCameraExposure::MeteringMode SimulatorCameraExposureControl::meteringMode() const +{ + return mMeteringMode; +} + +void SimulatorCameraExposureControl::setMeteringMode(QCameraExposure::MeteringMode mode) +{ + if (isMeteringModeSupported(mode)) + mMeteringMode = mode; +} + +bool SimulatorCameraExposureControl::isMeteringModeSupported(QCameraExposure::MeteringMode mode) const +{ + switch (mode) { + case QCameraExposure::MeteringAverage: + case QCameraExposure::MeteringSpot: + case QCameraExposure::MeteringMatrix: + return true; + default: + return false; + } + return false; +} + +bool SimulatorCameraExposureControl::isParameterSupported(ExposureParameter parameter) const +{ + switch (parameter) { + case QCameraExposureControl::ISO: + case QCameraExposureControl::Aperture: + case QCameraExposureControl::ShutterSpeed: + case QCameraExposureControl::ExposureCompensation: + return true; + case QCameraExposureControl::FlashPower: + case QCameraExposureControl::FlashCompensation: + return false; + + default: + return false; + } + + return false; +} + +QVariant SimulatorCameraExposureControl::exposureParameter(ExposureParameter parameter) const +{ + switch (parameter) { + case QCameraExposureControl::ISO: + return QVariant(isoSensitivity()); + case QCameraExposureControl::Aperture: + return QVariant(aperture()); + case QCameraExposureControl::ShutterSpeed: + return QVariant(shutterSpeed()); + case QCameraExposureControl::ExposureCompensation: + return QVariant(exposureCompensation()); + case QCameraExposureControl::FlashPower: + case QCameraExposureControl::FlashCompensation: + // Not supported + return QVariant(); + + default: + // Not supported + return QVariant(); + } +} + +QCameraExposureControl::ParameterFlags SimulatorCameraExposureControl::exposureParameterFlags(ExposureParameter parameter) const +{ + QCameraExposureControl::ParameterFlags flags; + + /* + * ISO, Aperture, ShutterSpeed: + * - Automatic/Manual + * - Read/Write + * - Discrete range + * + * ExposureCompensation: + * - Automatic/Manual + * - Read/Write + * - Continuous range + * + * FlashPower, FlashCompensation: + * - Not supported + */ + switch (parameter) { + case QCameraExposureControl::ISO: + case QCameraExposureControl::Aperture: + case QCameraExposureControl::ShutterSpeed: + flags |= QCameraExposureControl::AutomaticValue; + break; + case QCameraExposureControl::ExposureCompensation: + flags |= QCameraExposureControl::AutomaticValue; + flags |= QCameraExposureControl::ContinuousRange; + break; + case QCameraExposureControl::FlashPower: + case QCameraExposureControl::FlashCompensation: + // Do nothing - no flags + break; + + default: + // Do nothing - no flags + break; + } + + return flags; +} + +QVariantList SimulatorCameraExposureControl::supportedParameterRange(ExposureParameter parameter) const +{ + QVariantList valueList; + switch (parameter) { + case QCameraExposureControl::ISO: { + QList<int> exposureValues = mSettings->supportedIsoSensitivities(); + for (int i = 0; i < exposureValues.count(); ++i) { + valueList.append(QVariant(exposureValues[i])); + } + break; + } + case QCameraExposureControl::Aperture: { + QList<qreal> apertureValues = mSettings->supportedApertures(); + for (int i = 0; i < apertureValues.count(); ++i) { + valueList.append(QVariant(apertureValues[i])); + } + break; + } + case QCameraExposureControl::ShutterSpeed: { + QList<qreal> shutterSpeedValues = mSettings->supportedShutterSpeeds(); + for (int i = 0; i < shutterSpeedValues.count(); ++i) { + valueList.append(QVariant(shutterSpeedValues[i])); + } + break; + } + case QCameraExposureControl::ExposureCompensation: { + QList<qreal> evValues = mSettings->supportedExposureCompensationValues(); + for (int i = 0; i < evValues.count(); ++i) { + valueList.append(QVariant(evValues[i])); + } + break; + } + case QCameraExposureControl::FlashPower: + case QCameraExposureControl::FlashCompensation: + // Not supported + break; + + default: + // Not supported + return QVariantList(); + } + + return valueList; +} + +bool SimulatorCameraExposureControl::setExposureParameter(ExposureParameter parameter, const QVariant& value) +{ + bool useDefaultValue = false; + + if (value.isNull()) + useDefaultValue = true; + + switch (parameter) { + case QCameraExposureControl::ISO: + if (useDefaultValue) { + setAutoIsoSensitivity(); + return false; + } + else + return setManualIsoSensitivity(value.toInt()); + + case QCameraExposureControl::Aperture: + if (useDefaultValue) { + setAutoAperture(); + return false; + } + else + return setManualAperture(value.toReal()); + + case QCameraExposureControl::ShutterSpeed: + if (useDefaultValue) { + setAutoShutterSpeed(); + return false; + } + else + return setManualShutterSpeed(value.toReal()); + + case QCameraExposureControl::ExposureCompensation: + if (useDefaultValue) { + setAutoExposureCompensation(); + return false; + } + else + return setManualExposureCompensation(value.toReal()); + + case QCameraExposureControl::FlashPower: + return false; + case QCameraExposureControl::FlashCompensation: + return false; + + default: + // Not supported + return false; + } +} + +QString SimulatorCameraExposureControl::extendedParameterName(ExposureParameter parameter) +{ + switch (parameter) { + case QCameraExposureControl::ISO: + return QString("ISO Sensitivity"); + case QCameraExposureControl::Aperture: + return QString("Aperture"); + case QCameraExposureControl::ShutterSpeed: + return QString("Shutter Speed"); + case QCameraExposureControl::ExposureCompensation: + return QString("Exposure Compensation"); + case QCameraExposureControl::FlashPower: + return QString("Flash Power"); + case QCameraExposureControl::FlashCompensation: + return QString("Flash Compensation"); + + default: + return QString(); + } +} + +int SimulatorCameraExposureControl::isoSensitivity() const +{ + return mSettings->isoSensitivity(); +} + +bool SimulatorCameraExposureControl::isIsoSensitivitySupported(const int iso) const +{ + return mSettings->supportedIsoSensitivities().contains(iso); +} + +bool SimulatorCameraExposureControl::setManualIsoSensitivity(int iso) +{ + if (isIsoSensitivitySupported(iso)) { + mSettings->setManualIsoSensitivity(iso); + return true; + } else { + QList<int> supportedIsoValues = mSettings->supportedIsoSensitivities(); + int minIso = supportedIsoValues.first(); + int maxIso = supportedIsoValues.last(); + + if (iso < minIso) { // Smaller than minimum + iso = minIso; + } else if (iso > maxIso) { // Bigger than maximum + iso = maxIso; + } else { // Find closest + int indexOfClosest = 0; + int smallestDiff = 10000000; // Sensible max diff + for(int i = 0; i < supportedIsoValues.count(); ++i) { + int currentDiff = qAbs(iso - supportedIsoValues[i]); + if(currentDiff < smallestDiff) { + smallestDiff = currentDiff; + indexOfClosest = i; + } + } + iso = supportedIsoValues[indexOfClosest]; + } + mSettings->setManualIsoSensitivity(iso); + } + + return false; +} + +void SimulatorCameraExposureControl::setAutoIsoSensitivity() +{ + mSettings->setAutoIsoSensitivity(); +} + + +qreal SimulatorCameraExposureControl::aperture() const +{ + return mSettings->aperture(); +} + +bool SimulatorCameraExposureControl::isApertureSupported(const qreal aperture) const +{ + return mSettings->supportedApertures().contains(aperture); +} + +bool SimulatorCameraExposureControl::setManualAperture(qreal aperture) +{ + if (isApertureSupported(aperture)) { + mSettings->setManualAperture(aperture); + return true; + } else { + QList<qreal> supportedApertureValues = mSettings->supportedApertures(); + qreal minAperture = supportedApertureValues.first(); + qreal maxAperture = supportedApertureValues.last(); + + if (aperture < minAperture) { // Smaller than minimum + aperture = minAperture; + } else if (aperture > maxAperture) { // Bigger than maximum + aperture = maxAperture; + } else { // Find closest + int indexOfClosest = 0; + qreal smallestDiff = 100000000; // Sensible max diff + for(int i = 0; i < supportedApertureValues.count(); ++i) { + qreal currentDiff = qAbs(aperture - supportedApertureValues[i]); + if(currentDiff < smallestDiff) { + smallestDiff = currentDiff; + indexOfClosest = i; + } + } + aperture = supportedApertureValues[indexOfClosest]; + } + mSettings->setManualAperture(aperture); + } + + return false; +} + +void SimulatorCameraExposureControl::setAutoAperture() +{ + mSettings->setAutoAperture(); +} + +qreal SimulatorCameraExposureControl::shutterSpeed() const +{ + return mSettings->shutterSpeed(); +} + +bool SimulatorCameraExposureControl::isShutterSpeedSupported(const qreal seconds) const +{ + return mSettings->supportedShutterSpeeds().contains(seconds); +} + +bool SimulatorCameraExposureControl::setManualShutterSpeed(qreal seconds) +{ + if (isShutterSpeedSupported(seconds)) { + mSettings->setManualShutterSpeed(seconds); + return true; + } else { + QList<qreal> supportedShutterSpeeds = mSettings->supportedShutterSpeeds(); + + qreal minShutterSpeed = supportedShutterSpeeds.first(); + qreal maxShutterSpeed = supportedShutterSpeeds.last(); + + if (seconds < minShutterSpeed) { // Smaller than minimum + seconds = minShutterSpeed; + } else if (seconds > maxShutterSpeed) { // Bigger than maximum + seconds = maxShutterSpeed; + } else { // Find closest + int indexOfClosest = 0; + qreal smallestDiff = 100000000; // Sensible max diff + for(int i = 0; i < supportedShutterSpeeds.count(); ++i) { + qreal currentDiff = qAbs(seconds - supportedShutterSpeeds[i]); + if(currentDiff < smallestDiff) { + smallestDiff = currentDiff; + indexOfClosest = i; + } + } + seconds = supportedShutterSpeeds[indexOfClosest]; + } + mSettings->setManualShutterSpeed(seconds); + } + + return false; +} + +void SimulatorCameraExposureControl::setAutoShutterSpeed() +{ + mSettings->setAutoShutterSpeed(); +} + +qreal SimulatorCameraExposureControl::exposureCompensation() const +{ + return mSettings->exposureCompensation(); +} + +bool SimulatorCameraExposureControl::isExposureCompensationSupported(const qreal ev) const +{ + QList<qreal> supportedValues = mSettings->supportedExposureCompensationValues(); + return (ev >= supportedValues.first() && ev <= supportedValues.last()); +} + +bool SimulatorCameraExposureControl::setManualExposureCompensation(qreal ev) +{ + if (isExposureCompensationSupported(ev)) { + mSettings->setExposureCompensation(ev); + return true; + } + + return false; +} + +void SimulatorCameraExposureControl::setAutoExposureCompensation() +{ + mSettings->setAutoExposureCompensation(); +} + +// End of file |