Mercurial > fife-parpg

comparison ext/guichan-0.8.2/src/sdl/sdlimageloader.cpp @ 378:64738befdf3b

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bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
author vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
date Mon, 11 Jan 2010 23:34:52 +0000
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377:fe6fb0e0ed23 378:64738befdf3b
1 /* _______ __ __ __ ______ __ __ _______ __ __
2 * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
3 * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
4 * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
5 * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
6 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
7 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
8 *
9 * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
10 *
11 *
12 * Per Larsson a.k.a finalman
13 * Olof Naessén a.k.a jansem/yakslem
14 *
15 * Visit: http://guichan.sourceforge.net
16 *
17 * License: (BSD)
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions
20 * are met:
21 * 1. Redistributions of source code must retain the above copyright
22 * notice, this list of conditions and the following disclaimer.
23 * 2. Redistributions in binary form must reproduce the above copyright
24 * notice, this list of conditions and the following disclaimer in
25 * the documentation and/or other materials provided with the
26 * distribution.
27 * 3. Neither the name of Guichan nor the names of its contributors may
28 * be used to endorse or promote products derived from this software
29 * without specific prior written permission.
30 *
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
36 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
37 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
38 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
39 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
40 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
41 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42 */
43
44 /*
45 * For comments regarding functions please see the header file.
46 */
47
48 #include "guichan/sdl/sdlimage.hpp"
49
50 #include "SDL_image.h"
51
52 #include "guichan/exception.hpp"
53 #include "guichan/sdl/sdlimageloader.hpp"
54
55 namespace gcn
56 {
57 Image* SDLImageLoader::load(const std::string& filename,
58 bool convertToDisplayFormat)
59 {
60 SDL_Surface *loadedSurface = loadSDLSurface(filename);
61
62 if (loadedSurface == NULL)
63 {
64 throw GCN_EXCEPTION(
65 std::string("Unable to load image file: ") + filename);
66 }
67
68 SDL_Surface *surface = convertToStandardFormat(loadedSurface);
69 SDL_FreeSurface(loadedSurface);
70
71 if (surface == NULL)
72 {
73 throw GCN_EXCEPTION(
74 std::string("Not enough memory to load: ") + filename);
75 }
76
77 Image *image = new SDLImage(surface, true);
78
79 if (convertToDisplayFormat)
80 {
81 image->convertToDisplayFormat();
82 }
83
84 return image;
85 }
86
87 SDL_Surface* SDLImageLoader::loadSDLSurface(const std::string& filename)
88 {
89 return IMG_Load(filename.c_str());
90 }
91
92 SDL_Surface* SDLImageLoader::convertToStandardFormat(SDL_Surface* surface)
93 {
94 Uint32 rmask, gmask, bmask, amask;
95 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
96 rmask = 0xff000000;
97 gmask = 0x00ff0000;
98 bmask = 0x0000ff00;
99 amask = 0x000000ff;
100 #else
101 rmask = 0x000000ff;
102 gmask = 0x0000ff00;
103 bmask = 0x00ff0000;
104 amask = 0xff000000;
105 #endif
106
107 SDL_Surface *colorSurface = SDL_CreateRGBSurface(SDL_SWSURFACE,
108 0, 0, 32,
109 rmask, gmask, bmask, amask);
110
111 SDL_Surface *tmp = NULL;
112
113 if (colorSurface != NULL)
114 {
115 tmp = SDL_ConvertSurface(surface, colorSurface->format,
116 SDL_SWSURFACE);
117 SDL_FreeSurface(colorSurface);
118 }
119
120 return tmp;
121 }
122 }