1/*
2 * Copyright (C) 2010 Google 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 *
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 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef WEBPImageDecoder_h
30#define WEBPImageDecoder_h
31
32#include "ImageDecoder.h"
33
34#if USE(WEBP)
35
36#include "webp/decode.h"
37#if USE(QCMSLIB) && (WEBP_DECODER_ABI_VERSION > 0x200)
38#define QCMS_WEBP_COLOR_CORRECTION
39#endif
40
41namespace WebCore {
42
43class WEBPImageDecoder : public ImageDecoder {
44public:
45    WEBPImageDecoder(ImageSource::AlphaOption, ImageSource::GammaAndColorProfileOption);
46    virtual ~WEBPImageDecoder();
47
48    virtual String filenameExtension() const { return "webp"; }
49    virtual bool isSizeAvailable();
50    virtual ImageFrame* frameBufferAtIndex(size_t index);
51
52private:
53    bool decode(bool onlySize);
54
55    WebPIDecoder* m_decoder;
56    bool m_hasAlpha;
57    int m_formatFlags;
58
59#ifdef QCMS_WEBP_COLOR_CORRECTION
60    qcms_transform* colorTransform() const { return m_transform; }
61    void createColorTransform(const char* data, size_t);
62    void readColorProfile(const uint8_t* data, size_t);
63    void applyColorProfile(const uint8_t* data, size_t, ImageFrame&);
64
65    bool m_haveReadProfile;
66    qcms_transform* m_transform;
67    int m_decodedHeight;
68#else
69    void applyColorProfile(const uint8_t*, size_t, ImageFrame&) { };
70#endif
71    void clear();
72};
73
74} // namespace WebCore
75
76#endif
77
78#endif
79