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Diffstat (limited to 'src/plugins/mediaservices/qt7/qt7ciimagevideobuffer.mm')
| -rw-r--r-- | src/plugins/mediaservices/qt7/qt7ciimagevideobuffer.mm | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/src/plugins/mediaservices/qt7/qt7ciimagevideobuffer.mm b/src/plugins/mediaservices/qt7/qt7ciimagevideobuffer.mm new file mode 100644 index 0000000..3778b58 --- /dev/null +++ b/src/plugins/mediaservices/qt7/qt7ciimagevideobuffer.mm @@ -0,0 +1,104 @@ +/**************************************************************************** +** +** 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" + +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); +} + |