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/****************************************************************************
**
** 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 "qgstreamercameracontrol.h"
#include "qgstreamerimageencode.h"
#include <QtCore/qdebug.h>
#include <QtCore/qfile.h>
QGstreamerCameraControl::QGstreamerCameraControl(QGstreamerCaptureSession *session)
:QCameraControl(session),
m_captureMode(QCamera::CaptureStillImage),
m_session(session),
m_state(QCamera::UnloadedState),
m_status(QCamera::UnloadedStatus),
m_reloadPending(false)
{
connect(m_session, SIGNAL(stateChanged(QGstreamerCaptureSession::State)),
this, SLOT(updateStatus()));
connect(m_session->imageEncodeControl(), SIGNAL(settingsChanged()),
SLOT(reloadLater()));
connect(m_session, SIGNAL(viewfinderChanged()),
SLOT(reloadLater()));
connect(m_session, SIGNAL(readyChanged(bool)),
SLOT(reloadLater()));
m_session->setCaptureMode(QGstreamerCaptureSession::Image);
}
QGstreamerCameraControl::~QGstreamerCameraControl()
{
}
void QGstreamerCameraControl::setCaptureMode(QCamera::CaptureModes mode)
{
if (m_captureMode == mode || !isCaptureModeSupported(mode))
return;
m_captureMode = mode;
switch (mode) {
case QCamera::CaptureViewfinder:
case QCamera::CaptureStillImage:
m_session->setCaptureMode(QGstreamerCaptureSession::Image);
break;
case QCamera::CaptureVideo:
m_session->setCaptureMode(QGstreamerCaptureSession::AudioAndVideo);
break;
case QCamera::CaptureVideo | QCamera::CaptureStillImage:
m_session->setCaptureMode(QGstreamerCaptureSession::AudioAndVideoAndImage);
break;
}
emit captureModeChanged(mode);
updateStatus();
reloadLater();
}
bool QGstreamerCameraControl::isCaptureModeSupported(QCamera::CaptureModes mode) const
{
//only CaptureStillImage and CaptureVideo bits are allowed
return (mode & (QCamera::CaptureStillImage | QCamera::CaptureVideo)) == mode;
}
void QGstreamerCameraControl::setState(QCamera::State state)
{
if (m_state == state)
return;
m_state = state;
switch (state) {
case QCamera::UnloadedState:
case QCamera::LoadedState:
m_session->setState(QGstreamerCaptureSession::StoppedState);
break;
case QCamera::ActiveState:
//postpone changing to Active if the session is nor ready yet
if (m_session->isReady()) {
m_session->setState(QGstreamerCaptureSession::PreviewState);
} else {
#ifdef CAMEABIN_DEBUG
qDebug() << "Camera session is not ready yet, postpone activating";
#endif
}
break;
default:
emit error(QCamera::NotSupportedFeatureError, tr("State not supported."));
}
updateStatus();
emit stateChanged(m_state);
}
QCamera::State QGstreamerCameraControl::state() const
{
return m_state;
}
void QGstreamerCameraControl::updateStatus()
{
QCamera::Status oldStatus = m_status;
switch (m_state) {
case QCamera::UnloadedState:
m_status = QCamera::UnloadedStatus;
break;
case QCamera::LoadedState:
m_status = QCamera::LoadedStatus;
break;
case QCamera::ActiveState:
if (m_session->state() == QGstreamerCaptureSession::StoppedState)
m_status = QCamera::StartingStatus;
else
m_status = QCamera::ActiveStatus;
break;
}
if (oldStatus != m_status) {
//qDebug() << "Status changed:" << m_status;
emit statusChanged(m_status);
}
}
void QGstreamerCameraControl::reloadLater()
{
//qDebug() << "reload pipeline requested";
if (!m_reloadPending && m_state == QCamera::ActiveState) {
m_reloadPending = true;
m_session->setState(QGstreamerCaptureSession::StoppedState);
QMetaObject::invokeMethod(this, "reloadPipeline", Qt::QueuedConnection);
}
}
void QGstreamerCameraControl::reloadPipeline()
{
//qDebug() << "reload pipeline";
if (m_reloadPending) {
m_reloadPending = false;
if (m_state == QCamera::ActiveState && m_session->isReady()) {
m_session->setState(QGstreamerCaptureSession::PreviewState);
}
}
}
bool QGstreamerCameraControl::canChangeProperty(PropertyChangeType changeType, QCamera::Status status) const
{
Q_UNUSED(status);
switch (changeType) {
case QCameraControl::CaptureMode:
case QCameraControl::ImageEncodingSettings:
case QCameraControl::VideoEncodingSettings:
case QCameraControl::Viewfinder:
return true;
default:
return false;
}
}
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