108dda7a90
0.10 is still used by default. To enable GStreamer 1.0, pass GST_VERSION=1.0 to qmake for qtmultimedia.pro. Contributions from: Andrew den Exter <andrew.den.exter@qinetic.com.au> Ilya Smelykh <ilya@videoexpertsgroup.com> Jim Hodapp <jim.hodapp@canonical.com> Sergio Schvezov <sergio.schvezov@canonical.com> Change-Id: I72a46d1170a8794a149bdb5e20767afcc5b7587c Reviewed-by: Andrew den Exter <andrew.den.exter@qinetic.com.au>
126 lines
3.6 KiB
C++
126 lines
3.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL21$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qgstreamervideoprobecontrol_p.h"
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#include "qgstutils_p.h"
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#include <private/qgstvideobuffer_p.h>
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QGstreamerVideoProbeControl::QGstreamerVideoProbeControl(QObject *parent)
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: QMediaVideoProbeControl(parent)
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, m_flushing(false)
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, m_frameProbed(false)
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{
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}
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QGstreamerVideoProbeControl::~QGstreamerVideoProbeControl()
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{
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}
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void QGstreamerVideoProbeControl::startFlushing()
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{
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m_flushing = true;
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{
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QMutexLocker locker(&m_frameMutex);
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m_pendingFrame = QVideoFrame();
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}
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// only emit flush if at least one frame was probed
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if (m_frameProbed)
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emit flush();
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}
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void QGstreamerVideoProbeControl::stopFlushing()
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{
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m_flushing = false;
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}
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void QGstreamerVideoProbeControl::probeCaps(GstCaps *caps)
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{
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#if GST_CHECK_VERSION(1,0,0)
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GstVideoInfo videoInfo;
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QVideoSurfaceFormat format = QGstUtils::formatForCaps(caps, &videoInfo);
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QMutexLocker locker(&m_frameMutex);
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m_videoInfo = videoInfo;
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#else
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int bytesPerLine = 0;
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QVideoSurfaceFormat format = QGstUtils::formatForCaps(caps, &bytesPerLine);
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QMutexLocker locker(&m_frameMutex);
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m_bytesPerLine = bytesPerLine;
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#endif
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m_format = format;
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}
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bool QGstreamerVideoProbeControl::probeBuffer(GstBuffer *buffer)
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{
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QMutexLocker locker(&m_frameMutex);
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if (m_flushing || !m_format.isValid())
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return true;
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QVideoFrame frame(
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#if GST_CHECK_VERSION(1,0,0)
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new QGstVideoBuffer(buffer, m_videoInfo),
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#else
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new QGstVideoBuffer(buffer, m_bytesPerLine),
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#endif
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m_format.frameSize(),
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m_format.pixelFormat());
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QGstUtils::setFrameTimeStamps(&frame, buffer);
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m_frameProbed = true;
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if (!m_pendingFrame.isValid())
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QMetaObject::invokeMethod(this, "frameProbed", Qt::QueuedConnection);
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m_pendingFrame = frame;
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return true;
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}
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void QGstreamerVideoProbeControl::frameProbed()
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{
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QVideoFrame frame;
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{
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QMutexLocker locker(&m_frameMutex);
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if (!m_pendingFrame.isValid())
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return;
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frame = m_pendingFrame;
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m_pendingFrame = QVideoFrame();
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}
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emit videoFrameProbed(frame);
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}
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