fdb5c419c4
Moved checking the buffer type to the buffer pool instead of comparing the buffer type in QVideoSurfaceGstSink. Some gstreamer elements may push other buffer instance than provided by sink but with the same data pointer. Change-Id: Iab3bf4da2d5eeb5d2a9375aa609a89515b067ce3 Reviewed-by: Lev Zelenskiy <lev.zelenskiy@nokia.com> Reviewed-by: Ling Hu <ling.hu@nokia.com>
119 lines
3.8 KiB
C++
119 lines
3.8 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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**
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** This file is part of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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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, Nokia gives you certain additional
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** rights. These rights are described in the Nokia 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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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QGSTBUFFERPOOLINTERFACE_P_H
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#define QGSTBUFFERPOOLINTERFACE_P_H
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. It exists purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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//
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#include <qabstractvideobuffer.h>
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#include <qvideosurfaceformat.h>
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#include <QtCore/qobject.h>
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#include <QtCore/qplugin.h>
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#include <gst/gst.h>
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QT_BEGIN_NAMESPACE
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const QLatin1String QGstBufferPoolPluginKey("bufferpool");
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/*!
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Abstract interface for video buffers allocation.
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*/
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class QGstBufferPoolInterface
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{
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public:
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virtual ~QGstBufferPoolInterface() {}
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virtual bool isFormatSupported(const QVideoSurfaceFormat &format) const = 0;
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virtual GstBuffer *takeBuffer(const QVideoSurfaceFormat &format, GstCaps *caps) = 0;
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virtual void clear() = 0;
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virtual QAbstractVideoBuffer::HandleType handleType() const = 0;
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/*!
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Build an QAbstractVideoBuffer instance from GstBuffer.
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Returns NULL if GstBuffer is not compatible with this buffer pool.
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This method is called from gstreamer video sink thread.
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*/
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virtual QAbstractVideoBuffer *prepareVideoBuffer(GstBuffer *buffer, int bytesPerLine) = 0;
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};
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#define QGstBufferPoolInterface_iid "org.qt-project.qt.gstbufferpool/5.0"
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Q_DECLARE_INTERFACE(QGstBufferPoolInterface, QGstBufferPoolInterface_iid)
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class QGstBufferPoolPlugin : public QObject, public QGstBufferPoolInterface
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{
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Q_OBJECT
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Q_INTERFACES(QGstBufferPoolInterface)
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public:
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explicit QGstBufferPoolPlugin(QObject *parent = 0);
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virtual ~QGstBufferPoolPlugin() {}
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virtual bool isFormatSupported(const QVideoSurfaceFormat &format) const = 0;
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virtual GstBuffer *takeBuffer(const QVideoSurfaceFormat &format, GstCaps *caps) = 0;
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virtual void clear() = 0;
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virtual QAbstractVideoBuffer::HandleType handleType() const = 0;
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/*!
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Build an QAbstractVideoBuffer instance from compatible GstBuffer.
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Returns NULL if GstBuffer is not compatible with this buffer pool.
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This method is called from gstreamer video sink thread.
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*/
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virtual QAbstractVideoBuffer *prepareVideoBuffer(GstBuffer *buffer, int bytesPerLine) = 0;
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};
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QT_END_NAMESPACE
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#endif
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