1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
/*
* Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef PNG_DECODER_H_
#define PNG_DECODER_H_
#include "ImageDecoder.h"
namespace WebCore {
class PNGImageReader;
// This class decodes the PNG image format.
class PNGImageDecoder : public ImageDecoder
{
public:
PNGImageDecoder();
~PNGImageDecoder();
virtual String filenameExtension() const { return "png"; }
// Take the data and store it.
virtual void setData(SharedBuffer* data, bool allDataReceived);
// Whether or not the size information has been decoded yet.
virtual bool isSizeAvailable() const;
virtual RGBA32Buffer* frameBufferAtIndex(size_t index);
void decode(bool sizeOnly = false) const;
PNGImageReader* reader() { return m_reader; }
// Callbacks from libpng
void decodingFailed();
void headerAvailable();
void rowAvailable(unsigned char* rowBuffer, unsigned rowIndex, int interlacePass);
void pngComplete();
private:
mutable PNGImageReader* m_reader;
};
}
#endif
|
