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/****************************************************************************
**
** Copyright (C) 2012 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 "qgstreamerimagecapturecontrol.h"
#include <QtCore/QDebug>
#include <QtCore/QDir>
QGstreamerImageCaptureControl::QGstreamerImageCaptureControl(QGstreamerCaptureSession *session)
:QCameraImageCaptureControl(session), m_session(session), m_ready(false), m_lastId(0)
{
connect(m_session, SIGNAL(stateChanged(QGstreamerCaptureSession::State)), SLOT(updateState()));
connect(m_session, SIGNAL(imageExposed(int)), this, SIGNAL(imageExposed(int)));
connect(m_session, SIGNAL(imageCaptured(int,QImage)), this, SIGNAL(imageCaptured(int,QImage)));
connect(m_session, SIGNAL(imageSaved(int,QString)), this, SIGNAL(imageSaved(int,QString)));
}
QGstreamerImageCaptureControl::~QGstreamerImageCaptureControl()
{
}
bool QGstreamerImageCaptureControl::isReadyForCapture() const
{
return m_ready;
}
int QGstreamerImageCaptureControl::capture(const QString &fileName)
{
m_lastId++;
//it's allowed to request image capture while camera is starting
if (m_session->pendingState() == QGstreamerCaptureSession::StoppedState ||
!(m_session->captureMode() & QGstreamerCaptureSession::Image)) {
//emit error in the next event loop,
//so application can associate it with returned request id.
QMetaObject::invokeMethod(this, "error", Qt::QueuedConnection,
Q_ARG(int, m_lastId),
Q_ARG(int, QCameraImageCapture::NotReadyError),
Q_ARG(QString,tr("Not ready to capture")));
return m_lastId;
}
QString path = fileName;
if (path.isEmpty()) {
int lastImage = 0;
QDir outputDir = QDir::currentPath();
foreach(QString fileName, outputDir.entryList(QStringList() << "img_*.jpg")) {
int imgNumber = fileName.mid(4, fileName.size()-8).toInt();
lastImage = qMax(lastImage, imgNumber);
}
path = QString("img_%1.jpg").arg(lastImage+1,
4, //fieldWidth
10,
QLatin1Char('0'));
}
m_session->captureImage(m_lastId, path);
return m_lastId;
}
void QGstreamerImageCaptureControl::cancelCapture()
{
}
void QGstreamerImageCaptureControl::updateState()
{
bool ready = (m_session->state() == QGstreamerCaptureSession::PreviewState) &&
(m_session->captureMode() & QGstreamerCaptureSession::Image);
if (m_ready != ready) {
emit readyForCaptureChanged(m_ready = ready);
}
}
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