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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the plugins 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 "qt7ciimagevideobuffer.h"
#include <QuartzCore/CIFilter.h>
#include <QuartzCore/CIVector.h>
QT7CIImageVideoBuffer::QT7CIImageVideoBuffer(CIImage *image)
: QAbstractVideoBuffer(CoreImageHandle)
, m_image(image)
, m_buffer(0)
, m_mode(NotMapped)
{
[m_image retain];
}
QT7CIImageVideoBuffer::~QT7CIImageVideoBuffer()
{
[m_image release];
[m_buffer release];
}
QAbstractVideoBuffer::MapMode QT7CIImageVideoBuffer::mapMode() const
{
return m_mode;
}
uchar *QT7CIImageVideoBuffer::map(QAbstractVideoBuffer::MapMode mode, int *numBytes, int *bytesPerLine)
{
if (mode == NotMapped || m_mode != NotMapped || !m_image)
return 0;
if (!m_buffer) {
//swap R and B channels
CIFilter *colorSwapFilter = [CIFilter filterWithName: @"CIColorMatrix" keysAndValues:
@"inputImage", m_image,
@"inputRVector", [CIVector vectorWithX: 0 Y: 0 Z: 1 W: 0],
@"inputGVector", [CIVector vectorWithX: 0 Y: 1 Z: 0 W: 0],
@"inputBVector", [CIVector vectorWithX: 1 Y: 0 Z: 0 W: 0],
@"inputAVector", [CIVector vectorWithX: 0 Y: 0 Z: 0 W: 1],
@"inputBiasVector", [CIVector vectorWithX: 0 Y: 0 Z: 0 W: 0],
nil];
CIImage *img = [colorSwapFilter valueForKey: @"outputImage"];
m_buffer = [[NSBitmapImageRep alloc] initWithCIImage:img];
}
if (numBytes)
*numBytes = [m_buffer bytesPerPlane];
if (bytesPerLine)
*bytesPerLine = [m_buffer bytesPerRow];
m_mode = mode;
return [m_buffer bitmapData];
}
void QT7CIImageVideoBuffer::unmap()
{
m_mode = NotMapped;
}
QVariant QT7CIImageVideoBuffer::handle() const
{
return QVariant::fromValue<void*>(m_image);
}
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