1/*
2 * Copyright (C) 2006 Friedemann Kleint <fkleint@trolltech.com>
3 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#ifndef ImageDecoderQt_h
28#define ImageDecoderQt_h
29
30#include "ImageDecoder.h"
31#include <QtGui/QImageReader>
32#include <QtGui/QPixmap>
33#include <QtCore/QList>
34#include <QtCore/QHash>
35#include <QtCore/QBuffer>
36#include <wtf/OwnPtr.h>
37
38namespace WebCore {
39
40
41class ImageDecoderQt : public ImageDecoder
42{
43public:
44    ImageDecoderQt();
45    ~ImageDecoderQt();
46
47    virtual void setData(SharedBuffer* data, bool allDataReceived);
48    virtual bool isSizeAvailable();
49    virtual size_t frameCount();
50    virtual int repetitionCount() const;
51    virtual RGBA32Buffer* frameBufferAtIndex(size_t index);
52
53    virtual String filenameExtension() const;
54
55    virtual void clearFrameBufferCache(size_t clearBeforeFrame);
56
57private:
58    ImageDecoderQt(const ImageDecoderQt&);
59    ImageDecoderQt &operator=(const ImageDecoderQt&);
60
61private:
62    void internalDecodeSize();
63    void internalReadImage(size_t);
64    void internalHandleCurrentImage(size_t);
65    void forceLoadEverything();
66    void failRead();
67
68private:
69    QByteArray m_format;
70    OwnPtr<QBuffer> m_buffer;
71    OwnPtr<QImageReader> m_reader;
72    mutable int m_repetitionCount;
73};
74
75
76
77}
78
79#endif
80
81