2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
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5 * modification, are permitted provided that the following conditions
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26 #ifndef JPEG_DECODER_H_
27 #define JPEG_DECODER_H_
29 #include "ImageDecoder.h"
33 class JPEGImageReader;
35 // This class decodes the JPEG image format.
36 class JPEGImageDecoder : public ImageDecoder
42 virtual String filenameExtension() const { return "jpg"; }
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 virtual bool supportsAlpha() const { return false; }
54 void decode(bool sizeOnly = false) const;
56 JPEGImageReader* reader() { return m_reader; }
58 void setSize(int width, int height) {
59 if (!m_sizeAvailable) {
60 m_sizeAvailable = true;
61 m_size = IntSize(width, height);
65 bool outputScanlines();
69 mutable JPEGImageReader* m_reader;