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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the Qt Mobility Components. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include "qt7ciimagevideobuffer.h" |
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43 |
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44 #include <QuartzCore/CIFilter.h> |
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45 #include <QuartzCore/CIVector.h> |
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46 |
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47 QT7CIImageVideoBuffer::QT7CIImageVideoBuffer(CIImage *image) |
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48 : QAbstractVideoBuffer(CoreImageHandle) |
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49 , m_image(image) |
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50 , m_buffer(0) |
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51 , m_mode(NotMapped) |
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52 { |
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53 [m_image retain]; |
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54 } |
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55 |
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56 QT7CIImageVideoBuffer::~QT7CIImageVideoBuffer() |
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57 { |
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58 [m_image release]; |
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59 [m_buffer release]; |
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60 } |
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61 |
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62 QAbstractVideoBuffer::MapMode QT7CIImageVideoBuffer::mapMode() const |
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63 { |
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64 return m_mode; |
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65 } |
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66 |
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67 uchar *QT7CIImageVideoBuffer::map(QAbstractVideoBuffer::MapMode mode, int *numBytes, int *bytesPerLine) |
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68 { |
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69 if (mode == NotMapped || m_mode != NotMapped || !m_image) |
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70 return 0; |
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71 |
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72 if (!m_buffer) { |
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73 //swap R and B channels |
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74 CIFilter *colorSwapFilter = [CIFilter filterWithName: @"CIColorMatrix" keysAndValues: |
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75 @"inputImage", m_image, |
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76 @"inputRVector", [CIVector vectorWithX: 0 Y: 0 Z: 1 W: 0], |
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77 @"inputGVector", [CIVector vectorWithX: 0 Y: 1 Z: 0 W: 0], |
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78 @"inputBVector", [CIVector vectorWithX: 1 Y: 0 Z: 0 W: 0], |
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79 @"inputAVector", [CIVector vectorWithX: 0 Y: 0 Z: 0 W: 1], |
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80 @"inputBiasVector", [CIVector vectorWithX: 0 Y: 0 Z: 0 W: 0], |
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81 nil]; |
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82 CIImage *img = [colorSwapFilter valueForKey: @"outputImage"]; |
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83 |
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84 m_buffer = [[NSBitmapImageRep alloc] initWithCIImage:img]; |
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85 } |
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86 |
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87 if (numBytes) |
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88 *numBytes = [m_buffer bytesPerPlane]; |
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89 |
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90 if (bytesPerLine) |
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91 *bytesPerLine = [m_buffer bytesPerRow]; |
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92 |
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93 m_mode = mode; |
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94 |
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95 return [m_buffer bitmapData]; |
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96 } |
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97 |
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98 void QT7CIImageVideoBuffer::unmap() |
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99 { |
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100 m_mode = NotMapped; |
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101 } |
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102 |
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103 QVariant QT7CIImageVideoBuffer::handle() const |
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104 { |
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105 return QVariant::fromValue<void*>(m_image); |
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106 } |
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107 |