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Diffstat (limited to 'src/gsttools/qgstbufferpoolinterface_p.h')
| -rw-r--r-- | src/gsttools/qgstbufferpoolinterface_p.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/gsttools/qgstbufferpoolinterface_p.h b/src/gsttools/qgstbufferpoolinterface_p.h new file mode 100644 index 000000000..45e573262 --- /dev/null +++ b/src/gsttools/qgstbufferpoolinterface_p.h @@ -0,0 +1,117 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QGSTBUFFERPOOLINTERFACE_P_H +#define QGSTBUFFERPOOLINTERFACE_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <private/qgsttools_global_p.h> +#include <qabstractvideobuffer.h> +#include <qvideosurfaceformat.h> +#include <QtCore/qobject.h> +#include <QtCore/qplugin.h> + +#include <gst/gst.h> + +QT_BEGIN_NAMESPACE + +const QLatin1String QGstBufferPoolPluginKey("bufferpool"); + +/*! + Abstract interface for video buffers allocation. +*/ +class Q_GSTTOOLS_EXPORT QGstBufferPoolInterface +{ +public: + virtual ~QGstBufferPoolInterface() {} + + virtual bool isFormatSupported(const QVideoSurfaceFormat &format) const = 0; + virtual GstBuffer *takeBuffer(const QVideoSurfaceFormat &format, GstCaps *caps) = 0; + virtual void clear() = 0; + + virtual QAbstractVideoBuffer::HandleType handleType() const = 0; + + /*! + Build an QAbstractVideoBuffer instance from GstBuffer. + Returns NULL if GstBuffer is not compatible with this buffer pool. + + This method is called from gstreamer video sink thread. + */ + virtual QAbstractVideoBuffer *prepareVideoBuffer(GstBuffer *buffer, int bytesPerLine) = 0; +}; + +#define QGstBufferPoolInterface_iid "org.qt-project.qt.gstbufferpool/5.0" +Q_DECLARE_INTERFACE(QGstBufferPoolInterface, QGstBufferPoolInterface_iid) + +class QGstBufferPoolPlugin : public QObject, public QGstBufferPoolInterface +{ + Q_OBJECT + Q_INTERFACES(QGstBufferPoolInterface) +public: + explicit QGstBufferPoolPlugin(QObject *parent = 0); + virtual ~QGstBufferPoolPlugin() {} + + bool isFormatSupported(const QVideoSurfaceFormat &format) const override = 0; + GstBuffer *takeBuffer(const QVideoSurfaceFormat &format, GstCaps *caps) override = 0; + void clear() override = 0; + + QAbstractVideoBuffer::HandleType handleType() const override = 0; + + /*! + Build an QAbstractVideoBuffer instance from compatible GstBuffer. + Returns NULL if GstBuffer is not compatible with this buffer pool. + + This method is called from gstreamer video sink thread. + */ + QAbstractVideoBuffer *prepareVideoBuffer(GstBuffer *buffer, int bytesPerLine) override = 0; +}; + +QT_END_NAMESPACE + +#endif |