summaryrefslogtreecommitdiffstats
path: root/src/multimedia/video/qmemoryvideobuffer.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/multimedia/video/qmemoryvideobuffer.cpp')
-rw-r--r--src/multimedia/video/qmemoryvideobuffer.cpp129
1 files changed, 129 insertions, 0 deletions
diff --git a/src/multimedia/video/qmemoryvideobuffer.cpp b/src/multimedia/video/qmemoryvideobuffer.cpp
new file mode 100644
index 0000000..2e892b7
--- /dev/null
+++ b/src/multimedia/video/qmemoryvideobuffer.cpp
@@ -0,0 +1,129 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qmemoryvideobuffer_p.h"
+
+#include <private/qabstractvideobuffer_p.h>
+#include <qbytearray.h>
+
+QT_BEGIN_NAMESPACE
+
+class QMemoryVideoBufferPrivate : public QAbstractVideoBufferPrivate
+{
+public:
+ QMemoryVideoBufferPrivate()
+ : bytesPerLine(0)
+ , mapMode(QAbstractVideoBuffer::NotMapped)
+ {
+ }
+
+ int bytesPerLine;
+ QAbstractVideoBuffer::MapMode mapMode;
+ QByteArray data;
+};
+
+/*!
+ \class QMemoryVideoBuffer
+ \brief The QMemoryVideoBuffer class provides a system memory allocated video data buffer.
+ \internal
+
+ QMemoryVideoBuffer is the default video buffer for allocating system memory. It may be used to
+ allocate memory for a QVideoFrame without implementing your own QAbstractVideoBuffer.
+*/
+
+/*!
+ Constructs a video buffer with an image stride of \a bytesPerLine from a byte \a array.
+*/
+QMemoryVideoBuffer::QMemoryVideoBuffer(const QByteArray &array, int bytesPerLine)
+ : QAbstractVideoBuffer(*new QMemoryVideoBufferPrivate, NoHandle)
+{
+ Q_D(QMemoryVideoBuffer);
+
+ d->data = array;
+ d->bytesPerLine = bytesPerLine;
+}
+
+/*!
+ Destroys a system memory allocated video buffer.
+*/
+QMemoryVideoBuffer::~QMemoryVideoBuffer()
+{
+}
+
+/*!
+ \reimp
+*/
+QAbstractVideoBuffer::MapMode QMemoryVideoBuffer::mapMode() const
+{
+ return d_func()->mapMode;
+}
+
+/*!
+ \reimp
+*/
+uchar *QMemoryVideoBuffer::map(MapMode mode, int *numBytes, int *bytesPerLine)
+{
+ Q_D(QMemoryVideoBuffer);
+
+ if (d->mapMode == NotMapped && d->data.data() && mode != NotMapped) {
+ d->mapMode = mode;
+
+ if (numBytes)
+ *numBytes = d->data.size();
+
+ if (bytesPerLine)
+ *bytesPerLine = d->bytesPerLine;
+
+ return reinterpret_cast<uchar *>(d->data.data());
+ } else {
+ return 0;
+ }
+}
+
+/*!
+ \reimp
+*/
+void QMemoryVideoBuffer::unmap()
+{
+ d_func()->mapMode = NotMapped;
+}
+
+QT_END_NAMESPACE