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author | David Walter Seikel | 2013-01-13 17:24:39 +1000 |
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committer | David Walter Seikel | 2013-01-13 17:24:39 +1000 |
commit | 393b5cd1dc438872af89d334ef6e5fcc59f27d47 (patch) | |
tree | 6a14521219942a08a1b95cb2f5a923a9edd60f63 /libraries/irrlicht-1.8/source/Irrlicht/CImageWriterPNG.cpp | |
parent | Add a note about rasters suggested start up code. (diff) | |
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Added Irrlicht 1.8, but without all the Windows binaries.
Diffstat (limited to '')
-rw-r--r-- | libraries/irrlicht-1.8/source/Irrlicht/CImageWriterPNG.cpp | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/libraries/irrlicht-1.8/source/Irrlicht/CImageWriterPNG.cpp b/libraries/irrlicht-1.8/source/Irrlicht/CImageWriterPNG.cpp new file mode 100644 index 0000000..6c6386e --- /dev/null +++ b/libraries/irrlicht-1.8/source/Irrlicht/CImageWriterPNG.cpp | |||
@@ -0,0 +1,222 @@ | |||
1 | // Copyright (C) 2002-2012 Nikolaus Gebhardt | ||
2 | // This file is part of the "Irrlicht Engine". | ||
3 | // For conditions of distribution and use, see copyright notice in irrlicht.h | ||
4 | |||
5 | #include "CImageWriterPNG.h" | ||
6 | |||
7 | #ifdef _IRR_COMPILE_WITH_PNG_WRITER_ | ||
8 | |||
9 | #include "CImageLoaderPNG.h" | ||
10 | #include "CColorConverter.h" | ||
11 | #include "IWriteFile.h" | ||
12 | #include "irrString.h" | ||
13 | #include "os.h" // for logging | ||
14 | |||
15 | #ifdef _IRR_COMPILE_WITH_LIBPNG_ | ||
16 | #ifndef _IRR_USE_NON_SYSTEM_LIB_PNG_ | ||
17 | #include <png.h> // use system lib png | ||
18 | #else // _IRR_USE_NON_SYSTEM_LIB_PNG_ | ||
19 | #include "libpng/png.h" // use irrlicht included lib png | ||
20 | #endif // _IRR_USE_NON_SYSTEM_LIB_PNG_ | ||
21 | #endif // _IRR_COMPILE_WITH_LIBPNG_ | ||
22 | |||
23 | namespace irr | ||
24 | { | ||
25 | namespace video | ||
26 | { | ||
27 | |||
28 | IImageWriter* createImageWriterPNG() | ||
29 | { | ||
30 | return new CImageWriterPNG; | ||
31 | } | ||
32 | |||
33 | #ifdef _IRR_COMPILE_WITH_LIBPNG_ | ||
34 | // PNG function for error handling | ||
35 | static void png_cpexcept_error(png_structp png_ptr, png_const_charp msg) | ||
36 | { | ||
37 | os::Printer::log("PNG fatal error", msg, ELL_ERROR); | ||
38 | longjmp(png_jmpbuf(png_ptr), 1); | ||
39 | } | ||
40 | |||
41 | // PNG function for warning handling | ||
42 | static void png_cpexcept_warning(png_structp png_ptr, png_const_charp msg) | ||
43 | { | ||
44 | os::Printer::log("PNG warning", msg, ELL_WARNING); | ||
45 | } | ||
46 | |||
47 | // PNG function for file writing | ||
48 | void PNGAPI user_write_data_fcn(png_structp png_ptr, png_bytep data, png_size_t length) | ||
49 | { | ||
50 | png_size_t check; | ||
51 | |||
52 | io::IWriteFile* file=(io::IWriteFile*)png_get_io_ptr(png_ptr); | ||
53 | check=(png_size_t) file->write((const void*)data,(u32)length); | ||
54 | |||
55 | if (check != length) | ||
56 | png_error(png_ptr, "Write Error"); | ||
57 | } | ||
58 | #endif // _IRR_COMPILE_WITH_LIBPNG_ | ||
59 | |||
60 | CImageWriterPNG::CImageWriterPNG() | ||
61 | { | ||
62 | #ifdef _DEBUG | ||
63 | setDebugName("CImageWriterPNG"); | ||
64 | #endif | ||
65 | } | ||
66 | |||
67 | bool CImageWriterPNG::isAWriteableFileExtension(const io::path& filename) const | ||
68 | { | ||
69 | #ifdef _IRR_COMPILE_WITH_LIBPNG_ | ||
70 | return core::hasFileExtension ( filename, "png" ); | ||
71 | #else | ||
72 | return false; | ||
73 | #endif | ||
74 | } | ||
75 | |||
76 | bool CImageWriterPNG::writeImage(io::IWriteFile* file, IImage* image,u32 param) const | ||
77 | { | ||
78 | #ifdef _IRR_COMPILE_WITH_LIBPNG_ | ||
79 | if (!file || !image) | ||
80 | return false; | ||
81 | |||
82 | // Allocate the png write struct | ||
83 | png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, | ||
84 | NULL, (png_error_ptr)png_cpexcept_error, (png_error_ptr)png_cpexcept_warning); | ||
85 | if (!png_ptr) | ||
86 | { | ||
87 | os::Printer::log("PNGWriter: Internal PNG create write struct failure\n", file->getFileName(), ELL_ERROR); | ||
88 | return false; | ||
89 | } | ||
90 | |||
91 | // Allocate the png info struct | ||
92 | png_infop info_ptr = png_create_info_struct(png_ptr); | ||
93 | if (!info_ptr) | ||
94 | { | ||
95 | os::Printer::log("PNGWriter: Internal PNG create info struct failure\n", file->getFileName(), ELL_ERROR); | ||
96 | png_destroy_write_struct(&png_ptr, NULL); | ||
97 | return false; | ||
98 | } | ||
99 | |||
100 | // for proper error handling | ||
101 | if (setjmp(png_jmpbuf(png_ptr))) | ||
102 | { | ||
103 | png_destroy_write_struct(&png_ptr, &info_ptr); | ||
104 | return false; | ||
105 | } | ||
106 | |||
107 | png_set_write_fn(png_ptr, file, user_write_data_fcn, NULL); | ||
108 | |||
109 | // Set info | ||
110 | switch(image->getColorFormat()) | ||
111 | { | ||
112 | case ECF_A8R8G8B8: | ||
113 | case ECF_A1R5G5B5: | ||
114 | png_set_IHDR(png_ptr, info_ptr, | ||
115 | image->getDimension().Width, image->getDimension().Height, | ||
116 | 8, PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE, | ||
117 | PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT); | ||
118 | break; | ||
119 | default: | ||
120 | png_set_IHDR(png_ptr, info_ptr, | ||
121 | image->getDimension().Width, image->getDimension().Height, | ||
122 | 8, PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE, | ||
123 | PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT); | ||
124 | } | ||
125 | |||
126 | s32 lineWidth = image->getDimension().Width; | ||
127 | switch(image->getColorFormat()) | ||
128 | { | ||
129 | case ECF_R8G8B8: | ||
130 | case ECF_R5G6B5: | ||
131 | lineWidth*=3; | ||
132 | break; | ||
133 | case ECF_A8R8G8B8: | ||
134 | case ECF_A1R5G5B5: | ||
135 | lineWidth*=4; | ||
136 | break; | ||
137 | // TODO: Error handling in case of unsupported color format | ||
138 | default: | ||
139 | break; | ||
140 | } | ||
141 | u8* tmpImage = new u8[image->getDimension().Height*lineWidth]; | ||
142 | if (!tmpImage) | ||
143 | { | ||
144 | os::Printer::log("PNGWriter: Internal PNG create image failure\n", file->getFileName(), ELL_ERROR); | ||
145 | png_destroy_write_struct(&png_ptr, &info_ptr); | ||
146 | return false; | ||
147 | } | ||
148 | |||
149 | u8* data = (u8*)image->lock(); | ||
150 | switch(image->getColorFormat()) | ||
151 | { | ||
152 | case ECF_R8G8B8: | ||
153 | CColorConverter::convert_R8G8B8toR8G8B8(data,image->getDimension().Height*image->getDimension().Width,tmpImage); | ||
154 | break; | ||
155 | case ECF_A8R8G8B8: | ||
156 | CColorConverter::convert_A8R8G8B8toA8R8G8B8(data,image->getDimension().Height*image->getDimension().Width,tmpImage); | ||
157 | break; | ||
158 | case ECF_R5G6B5: | ||
159 | CColorConverter::convert_R5G6B5toR8G8B8(data,image->getDimension().Height*image->getDimension().Width,tmpImage); | ||
160 | break; | ||
161 | case ECF_A1R5G5B5: | ||
162 | CColorConverter::convert_A1R5G5B5toA8R8G8B8(data,image->getDimension().Height*image->getDimension().Width,tmpImage); | ||
163 | break; | ||
164 | #ifndef _DEBUG | ||
165 | // TODO: Error handling in case of unsupported color format | ||
166 | default: | ||
167 | break; | ||
168 | #endif | ||
169 | } | ||
170 | image->unlock(); | ||
171 | |||
172 | // Create array of pointers to rows in image data | ||
173 | |||
174 | //Used to point to image rows | ||
175 | u8** RowPointers = new png_bytep[image->getDimension().Height]; | ||
176 | if (!RowPointers) | ||
177 | { | ||
178 | os::Printer::log("PNGWriter: Internal PNG create row pointers failure\n", file->getFileName(), ELL_ERROR); | ||
179 | png_destroy_write_struct(&png_ptr, &info_ptr); | ||
180 | delete [] tmpImage; | ||
181 | return false; | ||
182 | } | ||
183 | |||
184 | data=tmpImage; | ||
185 | // Fill array of pointers to rows in image data | ||
186 | for (u32 i=0; i<image->getDimension().Height; ++i) | ||
187 | { | ||
188 | RowPointers[i]=data; | ||
189 | data += lineWidth; | ||
190 | } | ||
191 | // for proper error handling | ||
192 | if (setjmp(png_jmpbuf(png_ptr))) | ||
193 | { | ||
194 | png_destroy_write_struct(&png_ptr, &info_ptr); | ||
195 | delete [] RowPointers; | ||
196 | delete [] tmpImage; | ||
197 | return false; | ||
198 | } | ||
199 | |||
200 | png_set_rows(png_ptr, info_ptr, RowPointers); | ||
201 | |||
202 | if (image->getColorFormat()==ECF_A8R8G8B8 || image->getColorFormat()==ECF_A1R5G5B5) | ||
203 | png_write_png(png_ptr, info_ptr, PNG_TRANSFORM_BGR, NULL); | ||
204 | else | ||
205 | { | ||
206 | png_write_png(png_ptr, info_ptr, PNG_TRANSFORM_IDENTITY, NULL); | ||
207 | } | ||
208 | |||
209 | delete [] RowPointers; | ||
210 | delete [] tmpImage; | ||
211 | png_destroy_write_struct(&png_ptr, &info_ptr); | ||
212 | return true; | ||
213 | #else | ||
214 | return false; | ||
215 | #endif | ||
216 | } | ||
217 | |||
218 | } // namespace video | ||
219 | } // namespace irr | ||
220 | |||
221 | #endif | ||
222 | |||