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| 1 /* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | 1 /* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| 2 /* ***** BEGIN LICENSE BLOCK ***** | 2 /* ***** BEGIN LICENSE BLOCK ***** |
| 3 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 | 3 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
| 4 * | 4 * |
| 5 * The contents of this file are subject to the Mozilla Public License Version | 5 * The contents of this file are subject to the Mozilla Public License Version |
| 6 * 1.1 (the "License"); you may not use this file except in compliance with | 6 * 1.1 (the "License"); you may not use this file except in compliance with |
| 7 * the License. You may obtain a copy of the License at | 7 * the License. You may obtain a copy of the License at |
| 8 * http://www.mozilla.org/MPL/ | 8 * http://www.mozilla.org/MPL/ |
| 9 * | 9 * |
| 10 * Software distributed under the License is distributed on an "AS IS" basis, | 10 * Software distributed under the License is distributed on an "AS IS" basis, |
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| 67 U. S. A. | 67 U. S. A. |
| 68 | 68 |
| 69 CompuServe Incorporated maintains a mailing list with all those individuals and | 69 CompuServe Incorporated maintains a mailing list with all those individuals and |
| 70 organizations who wish to receive copies of this document when it is corrected | 70 organizations who wish to receive copies of this document when it is corrected |
| 71 or revised. This service is offered free of charge; please provide us with your | 71 or revised. This service is offered free of charge; please provide us with your |
| 72 mailing address. | 72 mailing address. |
| 73 */ | 73 */ |
| 74 | 74 |
| 75 #include "platform/image-decoders/gif/GIFImageReader.h" | 75 #include "platform/image-decoders/gif/GIFImageReader.h" |
| 76 | 76 |
| 77 #include <string.h> |
| 77 #include "wtf/PtrUtil.h" | 78 #include "wtf/PtrUtil.h" |
| 78 #include <string.h> | |
| 79 | 79 |
| 80 using blink::GIFImageDecoder; | 80 using blink::GIFImageDecoder; |
| 81 | 81 |
| 82 // GETN(n, s) requests at least 'n' bytes available from 'q', at start of state | 82 // GETN(n, s) requests at least 'n' bytes available from 'q', at start of state |
| 83 // 's'. | 83 // 's'. |
| 84 // | 84 // |
| 85 // Note: the hold will never need to be bigger than 256 bytes, as each GIF block | 85 // Note: the hold will never need to be bigger than 256 bytes, as each GIF block |
| 86 // (except colormaps) can never be bigger than 256 bytes. Colormaps are directly | 86 // (except colormaps) can never be bigger than 256 bytes. Colormaps are directly |
| 87 // copied in the resp. global_colormap or dynamically allocated local_colormap, | 87 // copied in the resp. global_colormap or dynamically allocated local_colormap, |
| 88 // so a fixed buffer in GIFImageReader is good enough. This buffer is only | 88 // so a fixed buffer in GIFImageReader is good enough. This buffer is only |
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| 881 rowIter = rowBuffer.begin(); | 881 rowIter = rowBuffer.begin(); |
| 882 rowsRemaining = m_frameContext->height(); | 882 rowsRemaining = m_frameContext->height(); |
| 883 | 883 |
| 884 // Clearing the whole suffix table lets us be more tolerant of bad data. | 884 // Clearing the whole suffix table lets us be more tolerant of bad data. |
| 885 for (int i = 0; i < clearCode; ++i) { | 885 for (int i = 0; i < clearCode; ++i) { |
| 886 suffix[i] = i; | 886 suffix[i] = i; |
| 887 suffixLength[i] = 1; | 887 suffixLength[i] = 1; |
| 888 } | 888 } |
| 889 return true; | 889 return true; |
| 890 } | 890 } |
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