OLD | NEW |
1 /* | 1 /* |
2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. | 2 * Copyright (C) 2006 Apple Computer, 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 | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
11 * documentation and/or other materials provided with the distribution. | 11 * documentation and/or other materials provided with the distribution. |
12 * | 12 * |
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 */ | 24 */ |
25 | 25 |
26 #ifndef PNGImageDecoder_h | 26 #ifndef PNGImageDecoder_h |
27 #define PNGImageDecoder_h | 27 #define PNGImageDecoder_h |
28 | 28 |
29 #include "core/platform/image-decoders/ImageDecoder.h" | 29 #include "platform/image-decoders/ImageDecoder.h" |
| 30 #include "wtf/Noncopyable.h" |
30 #include "wtf/OwnPtr.h" | 31 #include "wtf/OwnPtr.h" |
31 | 32 |
32 namespace WebCore { | 33 namespace WebCore { |
33 | 34 |
34 class PNGImageReader; | 35 class PNGImageReader; |
35 | 36 |
36 // This class decodes the PNG image format. | 37 // This class decodes the PNG image format. |
37 class PNGImageDecoder : public ImageDecoder { | 38 class PLATFORM_EXPORT PNGImageDecoder : public ImageDecoder { |
38 public: | 39 WTF_MAKE_NONCOPYABLE(PNGImageDecoder); |
39 PNGImageDecoder(ImageSource::AlphaOption, ImageSource::GammaAndColorProf
ileOption, size_t maxDecodedBytes); | 40 public: |
40 virtual ~PNGImageDecoder(); | 41 PNGImageDecoder(ImageSource::AlphaOption, ImageSource::GammaAndColorProfileO
ption, size_t maxDecodedBytes); |
| 42 virtual ~PNGImageDecoder(); |
41 | 43 |
42 // ImageDecoder | 44 // ImageDecoder |
43 virtual String filenameExtension() const { return "png"; } | 45 virtual String filenameExtension() const { return "png"; } |
44 virtual bool isSizeAvailable(); | 46 virtual bool isSizeAvailable(); |
45 virtual ImageFrame* frameBufferAtIndex(size_t); | 47 virtual ImageFrame* frameBufferAtIndex(size_t); |
46 // CAUTION: setFailed() deletes |m_reader|. Be careful to avoid | 48 // CAUTION: setFailed() deletes |m_reader|. Be careful to avoid |
47 // accessing deleted memory, especially when calling this from inside | 49 // accessing deleted memory, especially when calling this from inside |
48 // PNGImageReader! | 50 // PNGImageReader! |
49 virtual bool setFailed(); | 51 virtual bool setFailed(); |
50 | 52 |
51 // Callbacks from libpng | 53 // Callbacks from libpng |
52 void headerAvailable(); | 54 void headerAvailable(); |
53 void rowAvailable(unsigned char* rowBuffer, unsigned rowIndex, int inter
lacePass); | 55 void rowAvailable(unsigned char* rowBuffer, unsigned rowIndex, int interlace
Pass); |
54 void pngComplete(); | 56 void pngComplete(); |
55 | 57 |
56 bool isComplete() const | 58 bool isComplete() const |
57 { | 59 { |
58 return !m_frameBufferCache.isEmpty() && (m_frameBufferCache.first().
status() == ImageFrame::FrameComplete); | 60 return !m_frameBufferCache.isEmpty() && (m_frameBufferCache.first().stat
us() == ImageFrame::FrameComplete); |
59 } | 61 } |
60 | 62 |
61 private: | 63 private: |
62 // Decodes the image. If |onlySize| is true, stops decoding after | 64 // Decodes the image. If |onlySize| is true, stops decoding after |
63 // calculating the image size. If decoding fails but there is no more | 65 // calculating the image size. If decoding fails but there is no more |
64 // data coming, sets the "decode failure" flag. | 66 // data coming, sets the "decode failure" flag. |
65 void decode(bool onlySize); | 67 void decode(bool onlySize); |
66 | 68 |
67 OwnPtr<PNGImageReader> m_reader; | 69 OwnPtr<PNGImageReader> m_reader; |
68 bool m_doNothingOnFailure; | 70 bool m_doNothingOnFailure; |
69 }; | 71 }; |
70 | 72 |
71 } // namespace WebCore | 73 } // namespace WebCore |
72 | 74 |
73 #endif | 75 #endif |
OLD | NEW |