Changed QVideoSurfaceGstSink to take pools from plugins

Change-Id: Iec743efc52513e2000276b9a18d1d9639c270699 Reviewed-by: Dmytro Poplavskiy <dmytro.poplavskiy@nokia.com>
2011-11-08 12:38:02 +10:00
parent 34cdc41a93
commit 956526a9fb
6 changed files with 118 additions and 16 deletions
--- a/src/multimedia/gsttools_headers/qgstbufferpoolinterface_p.h
+++ b/src/multimedia/gsttools_headers/qgstbufferpoolinterface_p.h
@@ -0,0 +1,121 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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, Nokia gives you certain additional
+** rights. These rights are described in the Nokia 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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 <qabstractvideobuffer.h>
+#include <qvideosurfaceformat.h>
+#include <QtCore/qobject.h>
+#include <QtCore/qplugin.h>
+#include <QtCore/qfactoryinterface.h>
+
+#include <gst/gst.h>
+
+const QLatin1String QGstBufferPoolPluginKey("bufferpool");
+
+/*!
+    Abstract interface for video buffers allocation.
+*/
+class QGstBufferPoolInterface : public QFactoryInterface
+{
+public:
+    virtual ~QGstBufferPoolInterface() {}
+
+    virtual bool isFormatSupported(const QVideoSurfaceFormat &format) const = 0;
+
+    virtual GType bufferType() 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 compatible (mathcing gst buffer type)
+      GstBuffer.
+
+      This method is called from gstreamer video sink thread.
+     */
+    virtual QAbstractVideoBuffer *prepareVideoBuffer(GstBuffer *buffer, int bytesPerLine) = 0;
+};
+
+#define QGstBufferPoolInterface_iid "com.nokia.Qt.QGstBufferPoolInterface"
+Q_DECLARE_INTERFACE(QGstBufferPoolInterface, QGstBufferPoolInterface_iid)
+
+class QGstBufferPoolPlugin : public QObject, public QGstBufferPoolInterface
+{
+    Q_OBJECT
+    Q_INTERFACES(QGstBufferPoolInterface:QFactoryInterface)
+public:
+    explicit QGstBufferPoolPlugin(QObject *parent = 0);
+    virtual ~QGstBufferPoolPlugin() {}
+
+    virtual bool isFormatSupported(const QVideoSurfaceFormat &format) const = 0;
+
+    virtual GType bufferType() 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 compatible (mathcing gst buffer type)
+      GstBuffer.
+
+      This method is called from gstreamer video sink thread.
+     */
+    virtual QAbstractVideoBuffer *prepareVideoBuffer(GstBuffer *buffer, int bytesPerLine) = 0;
+
+    virtual QStringList keys() const = 0;
+};
+
+#endif