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Side by Side Diff: Source/platform/image-decoders/ico/ICOImageDecoder.cpp

Issue 99103006: Moving GraphicsContext and dependencies from core to platform. (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Final patch - fixes Android Created 7 years ago
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1 /* 1 /*
2 * Copyright (c) 2008, 2009, Google Inc. All rights reserved. 2 * Copyright (c) 2008, 2009, Google Inc. All rights reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are 5 * modification, are permitted provided that the following conditions are
6 * met: 6 * met:
7 * 7 *
8 * * Redistributions of source code must retain the above copyright 8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer. 9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above 10 * * Redistributions in binary form must reproduce the above
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22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */ 29 */
30 30
31 #include "config.h" 31 #include "config.h"
32 #include "core/platform/image-decoders/ico/ICOImageDecoder.h" 32 #include "platform/image-decoders/ico/ICOImageDecoder.h"
33 33
34 #include <algorithm> 34 #include <algorithm>
35 35
36 #include "core/platform/image-decoders/png/PNGImageDecoder.h"
37 #include "platform/PlatformInstrumentation.h" 36 #include "platform/PlatformInstrumentation.h"
37 #include "platform/image-decoders/png/PNGImageDecoder.h"
38 #include "wtf/PassOwnPtr.h" 38 #include "wtf/PassOwnPtr.h"
39 39
40 namespace WebCore { 40 namespace WebCore {
41 41
42 // Number of bits in .ICO/.CUR used to store the directory and its entries, 42 // Number of bits in .ICO/.CUR used to store the directory and its entries,
43 // respectively (doesn't match sizeof values for member structs since we omit 43 // respectively (doesn't match sizeof values for member structs since we omit
44 // some fields). 44 // some fields).
45 static const size_t sizeOfDirectory = 6; 45 static const size_t sizeOfDirectory = 6;
46 static const size_t sizeOfDirEntry = 16; 46 static const size_t sizeOfDirEntry = 16;
47 47
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337 // Check if this entry is a BMP or a PNG; we need 4 bytes to check the magic 337 // Check if this entry is a BMP or a PNG; we need 4 bytes to check the magic
338 // number. 338 // number.
339 ASSERT_WITH_SECURITY_IMPLICATION(index < m_dirEntries.size()); 339 ASSERT_WITH_SECURITY_IMPLICATION(index < m_dirEntries.size());
340 const uint32_t imageOffset = m_dirEntries[index].m_imageOffset; 340 const uint32_t imageOffset = m_dirEntries[index].m_imageOffset;
341 if ((imageOffset > m_data->size()) || ((m_data->size() - imageOffset) < 4)) 341 if ((imageOffset > m_data->size()) || ((m_data->size() - imageOffset) < 4))
342 return Unknown; 342 return Unknown;
343 return strncmp(&m_data->data()[imageOffset], "\x89PNG", 4) ? BMP : PNG; 343 return strncmp(&m_data->data()[imageOffset], "\x89PNG", 4) ? BMP : PNG;
344 } 344 }
345 345
346 } 346 }
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