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/****************************************************************************
**
** Copyright (C) 2016 Research In Motion
** Contact: https://www.qt.io/licensing/
**
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "bbcameraexposurecontrol.h"
#include "bbcamerasession.h"
#include <QDebug>
QT_BEGIN_NAMESPACE
BbCameraExposureControl::BbCameraExposureControl(BbCameraSession *session, QObject *parent)
: QCameraExposureControl(parent)
, m_session(session)
, m_requestedExposureMode(QCameraExposure::ExposureAuto)
{
connect(m_session, SIGNAL(statusChanged(QCamera::Status)), this, SLOT(statusChanged(QCamera::Status)));
}
bool BbCameraExposureControl::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 false;
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 BbCameraExposureControl::supportedParameterRange(ExposureParameter parameter, bool *continuous) const
{
if (parameter != QCameraExposureControl::ExposureMode) // no other parameter supported by BB10 API at the moment
return QVariantList();
if (m_session->status() != QCamera::ActiveStatus) // we can query supported exposure modes only with active viewfinder
return QVariantList();
if (continuous)
*continuous = false;
int supported = 0;
camera_scenemode_t modes[20];
const camera_error_t result = camera_get_scene_modes(m_session->handle(), 20, &supported, modes);
if (result != CAMERA_EOK) {
qWarning() << "Unable to retrieve supported scene modes:" << result;
return QVariantList();
}
QVariantList exposureModes;
for (int i = 0; i < supported; ++i) {
switch (modes[i]) {
case CAMERA_SCENE_AUTO:
exposureModes << QVariant::fromValue(QCameraExposure::ExposureAuto);
break;
case CAMERA_SCENE_SPORTS:
exposureModes << QVariant::fromValue(QCameraExposure::ExposureSports);
break;
case CAMERA_SCENE_CLOSEUP:
exposureModes << QVariant::fromValue(QCameraExposure::ExposurePortrait);
break;
case CAMERA_SCENE_ACTION:
exposureModes << QVariant::fromValue(QCameraExposure::ExposureSports);
break;
case CAMERA_SCENE_BEACHANDSNOW:
exposureModes << QVariant::fromValue(QCameraExposure::ExposureBeach) << QVariant::fromValue(QCameraExposure::ExposureSnow);
break;
case CAMERA_SCENE_NIGHT:
exposureModes << QVariant::fromValue(QCameraExposure::ExposureNight);
break;
default: break;
}
}
return exposureModes;
}
QVariant BbCameraExposureControl::requestedValue(ExposureParameter parameter) const
{
if (parameter != QCameraExposureControl::ExposureMode) // no other parameter supported by BB10 API at the moment
return QVariant();
return QVariant::fromValue(m_requestedExposureMode);
}
QVariant BbCameraExposureControl::actualValue(ExposureParameter parameter) const
{
if (parameter != QCameraExposureControl::ExposureMode) // no other parameter supported by BB10 API at the moment
return QVariantList();
if (m_session->status() != QCamera::ActiveStatus) // we can query actual scene modes only with active viewfinder
return QVariantList();
camera_scenemode_t sceneMode = CAMERA_SCENE_DEFAULT;
const camera_error_t result = camera_get_scene_mode(m_session->handle(), &sceneMode);
if (result != CAMERA_EOK) {
qWarning() << "Unable to retrieve scene mode:" << result;
return QVariant();
}
switch (sceneMode) {
case CAMERA_SCENE_AUTO:
return QVariant::fromValue(QCameraExposure::ExposureAuto);
case CAMERA_SCENE_SPORTS:
return QVariant::fromValue(QCameraExposure::ExposureSports);
case CAMERA_SCENE_CLOSEUP:
return QVariant::fromValue(QCameraExposure::ExposurePortrait);
case CAMERA_SCENE_ACTION:
return QVariant::fromValue(QCameraExposure::ExposureSports);
case CAMERA_SCENE_BEACHANDSNOW:
return (m_requestedExposureMode == QCameraExposure::ExposureBeach ? QVariant::fromValue(QCameraExposure::ExposureBeach)
: QVariant::fromValue(QCameraExposure::ExposureSnow));
case CAMERA_SCENE_NIGHT:
return QVariant::fromValue(QCameraExposure::ExposureNight);
default:
break;
}
return QVariant();
}
bool BbCameraExposureControl::setValue(ExposureParameter parameter, const QVariant& value)
{
if (parameter != QCameraExposureControl::ExposureMode) // no other parameter supported by BB10 API at the moment
return false;
if (m_session->status() != QCamera::ActiveStatus) // we can set actual scene modes only with active viewfinder
return false;
camera_scenemode_t sceneMode = CAMERA_SCENE_DEFAULT;
if (value.isValid()) {
m_requestedExposureMode = value.value<QCameraExposure::ExposureMode>();
emit requestedValueChanged(QCameraExposureControl::ExposureMode);
switch (m_requestedExposureMode) {
case QCameraExposure::ExposureAuto:
sceneMode = CAMERA_SCENE_AUTO;
break;
case QCameraExposure::ExposureSports:
sceneMode = CAMERA_SCENE_SPORTS;
break;
case QCameraExposure::ExposurePortrait:
sceneMode = CAMERA_SCENE_CLOSEUP;
break;
case QCameraExposure::ExposureBeach:
sceneMode = CAMERA_SCENE_BEACHANDSNOW;
break;
case QCameraExposure::ExposureSnow:
sceneMode = CAMERA_SCENE_BEACHANDSNOW;
break;
case QCameraExposure::ExposureNight:
sceneMode = CAMERA_SCENE_NIGHT;
break;
default:
sceneMode = CAMERA_SCENE_DEFAULT;
break;
}
}
const camera_error_t result = camera_set_scene_mode(m_session->handle(), sceneMode);
if (result != CAMERA_EOK) {
qWarning() << "Unable to set scene mode:" << result;
return false;
}
emit actualValueChanged(QCameraExposureControl::ExposureMode);
return true;
}
void BbCameraExposureControl::statusChanged(QCamera::Status status)
{
if (status == QCamera::ActiveStatus || status == QCamera::LoadedStatus)
emit parameterRangeChanged(QCameraExposureControl::ExposureMode);
}
QT_END_NAMESPACE
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