| OLD | NEW |
|---|
| (Empty) |
| 1 /* | |
| 2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
| 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 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. | |
| 24 */ | |
| 25 | |
| 26 #ifndef PNGImageDecoder_h | |
| 27 #define PNGImageDecoder_h | |
| 28 | |
| 29 #include "core/platform/image-decoders/ImageDecoder.h" | |
| 30 #include "wtf/OwnPtr.h" | |
| 31 | |
| 32 namespace WebCore { | |
| 33 | |
| 34 class PNGImageReader; | |
| 35 | |
| 36 // This class decodes the PNG image format. | |
| 37 class PNGImageDecoder : public ImageDecoder { | |
| 38 public: | |
| 39 PNGImageDecoder(ImageSource::AlphaOption, ImageSource::GammaAndColorProf
ileOption, size_t maxDecodedBytes); | |
| 40 virtual ~PNGImageDecoder(); | |
| 41 | |
| 42 // ImageDecoder | |
| 43 virtual String filenameExtension() const { return "png"; } | |
| 44 virtual bool isSizeAvailable(); | |
| 45 virtual ImageFrame* frameBufferAtIndex(size_t); | |
| 46 // CAUTION: setFailed() deletes |m_reader|. Be careful to avoid | |
| 47 // accessing deleted memory, especially when calling this from inside | |
| 48 // PNGImageReader! | |
| 49 virtual bool setFailed(); | |
| 50 | |
| 51 // Callbacks from libpng | |
| 52 void headerAvailable(); | |
| 53 void rowAvailable(unsigned char* rowBuffer, unsigned rowIndex, int inter
lacePass); | |
| 54 void pngComplete(); | |
| 55 | |
| 56 bool isComplete() const | |
| 57 { | |
| 58 return !m_frameBufferCache.isEmpty() && (m_frameBufferCache.first().
status() == ImageFrame::FrameComplete); | |
| 59 } | |
| 60 | |
| 61 private: | |
| 62 // Decodes the image. If |onlySize| is true, stops decoding after | |
| 63 // calculating the image size. If decoding fails but there is no more | |
| 64 // data coming, sets the "decode failure" flag. | |
| 65 void decode(bool onlySize); | |
| 66 | |
| 67 OwnPtr<PNGImageReader> m_reader; | |
| 68 bool m_doNothingOnFailure; | |
| 69 }; | |
| 70 | |
| 71 } // namespace WebCore | |
| 72 | |
| 73 #endif | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 99103006:
Moving GraphicsContext and dependencies from core to platform. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk