adding zero-copy-QSGVideoNode for imx6

On imx6 there is a platform-specific API to implement
memory-mapping from gstreamer-buffer to opengl-texture.

This plugin uses this API to avoid CPU-based-memory-copy.

This allows fluid video-playback up to 1080p with very little CPU load.
Before even 720p used one cpu-core completely and wasn't fluid.

Change-Id: I0c33eb5d475393a65459291ce9290fa0753de4a5
Reviewed-by: Andy Nichols <andy.nichols@digia.com>

1 files changed, 60 insertions, 0 deletions

diff --git a/src/plugins/videonode/imx6/qsgvivantevideonodefactory.cpp b/src/plugins/videonode/imx6/qsgvivantevideonodefactory.cpp
new file mode 100644
index 000000000..e0711e187
--- /dev/null
+++ b/src/plugins/videonode/imx6/qsgvivantevideonodefactory.cpp
@@ -0,0 +1,60 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Pelagicore AG
+** 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 "qsgvivantevideonodefactory.h"
+#include "qsgvivantevideonode.h"
+
+QList<QVideoFrame::PixelFormat> QSGVivanteVideoNodeFactory::supportedPixelFormats(
+        QAbstractVideoBuffer::HandleType handleType) const
+{
+    if (handleType == QAbstractVideoBuffer::NoHandle)
+        return QSGVivanteVideoNode::getVideoFormat2GLFormatMap().keys();
+    else
+        return QList<QVideoFrame::PixelFormat>();
+}
+
+QSGVideoNode *QSGVivanteVideoNodeFactory::createNode(const QVideoSurfaceFormat &format)
+{
+    if (supportedPixelFormats(format.handleType()).contains(format.pixelFormat())) {
+        return new QSGVivanteVideoNode(format);
+    }
+    return 0;
+}