Simple Image Loading LibrarY  0.1.0
SILLYPNGImageContext.h
1 /***********************************************************************
2  filename: SILLYPNGImageContext.h
3  created: 11 Jun 2006
4  author: Olivier Delannoy
5 
6  purpose: Declaration of the PNGImageContext class
7 *************************************************************************/
8 /***************************************************************************
9  * Copyright (C) 2004 - 2006 Paul D Turner & The CEGUI Development Team
10  *
11  * Permission is hereby granted, free of charge, to any person obtaining
12  * a copy of this software and associated documentation files (the
13  * "Software"), to deal in the Software without restriction, including
14  * without limitation the rights to use, copy, modify, merge, publish,
15  * distribute, sublicense, and/or sell copies of the Software, and to
16  * permit persons to whom the Software is furnished to do so, subject to
17  * the following conditions:
18  *
19  * The above copyright notice and this permission notice shall be
20  * included in all copies or substantial portions of the Software.
21  *
22  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
25  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
26  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
27  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
28  * OTHER DEALINGS IN THE SOFTWARE.
29  ***************************************************************************/
30 #ifndef _SILLYPNGImageContext_h_
31 #define _SILLYPNGImageContext_h_
32 #include "SILLYBase.h"
33 #include "SILLYImageContext.h"
34 #include "SILLYDataSource.h"
35 #include <png.h>
36 // Start of section namespace SILLY
37 namespace SILLY
38 {
39 
45 class SILLY_EXPORT PNGImageContext : public ImageContext
46 {
47 public:
49  ~PNGImageContext();
50 
51  int read(png_bytep data, png_size_t length);
52 
53 
54 
55 private:
56  void setImageSize();
57 
58  size_t d_offset;
59 
60  DataSource* d_data;
61 
62  png_structp d_png_ptr;
63 
64  png_infop d_info_ptr;
65 
66  size_t d_bit_depth;
67  size_t d_num_channels;
68 
69 
70  friend class PNGImageLoader;
71 };
72 
73 
74 } // End of section namespace SILLY
75 
76 // Inclue inline function when needed
77 #ifdef SILLY_OPT_INLINE
78 #include "SILLYPNGImageContext.icpp"
79 #endif
80 
81 #endif // end of guard _SILLYPNGImageContext_h_