Simple Image Loading LibrarY  0.1.0
SILLYImageContext.cpp
1 /***********************************************************************
2  filename: SILLYImageContext.cpp
3  created: 10 Jun 2006
4  author: Olivier Delannoy
5 
6  purpose: Implementation file for ImageContext 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 #ifdef HAVE_CONFIG_H
31 #include <config.h>
32 #endif
33 
34 #include "SILLYImageContext.h"
35 #ifndef SILLY_OPT_INLINE
36 #define inline
37 #include "SILLYImageContext.icpp"
38 #undef inline
39 #endif
40 #include <cstring>
41 // Start section of namespace SILLY
42 namespace SILLY
43 {
44 
46 {
47  size_t depth;
48  switch(d_format)
49  {
50  case PF_A1B5G5R5:
51  depth = 2;
52  break;
53  case PF_RGB:
54  depth = 3;
55  break;
56  case PF_RGBA:
57  depth = 4;
58  break;
59  }
60 
61  // Do the flipping
62  byte *p1,*p2,*tmp; // tmp pointers
63  size_t len = d_width * depth; // length of horizontal line in bytes
64  tmp = new byte[len]; // Allocate a temporary line
65  if ( !tmp )
66  return false;
67 
68  size_t y , y2;
69  y2 = d_height - 1;
70  for ( y = 0; y < d_height >> 1; y++ )
71  {
72  p1 = (d_pixels) + len * y;
73  p2 = (d_pixels) + len * y2;
74  memcpy( tmp, p1, len );
75  memcpy( p1, p2, len );
76  memcpy( p2, tmp, len );
77  y2--;
78  }
79  delete [] tmp;
80  return true;
81 }
82 
83 
84 } // End section of namespace SILLY
Simple Image Loading LibrarY namespace.
bool flipVertically()
Flip pixel ordering.
unsigned char byte
Typename for a byte.
Definition: SILLYBase.h:80