2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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26 #ifndef PNG_DECODER_H_
27 #define PNG_DECODER_H_
29 #include "ImageDecoder.h"
35 // This class decodes the PNG image format.
36 class PNGImageDecoder : public ImageDecoder
42 virtual String filenameExtension() const { return "png"; }
44 // Take the data and store it.
45 virtual void setData(SharedBuffer* data, bool allDataReceived);
47 // Whether or not the size information has been decoded yet.
48 virtual bool isSizeAvailable() const;
50 virtual RGBA32Buffer* frameBufferAtIndex(size_t index);
52 void decode(bool sizeOnly = false) const;
54 PNGImageReader* reader() { return m_reader; }
56 // Callbacks from libpng
57 void decodingFailed() { m_failed = true; }
58 void headerAvailable();
59 void rowAvailable(unsigned char* rowBuffer, unsigned rowIndex, int interlacePass);
63 mutable PNGImageReader* m_reader;