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<h1>ImageLoader.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
<a name="l00002"></a>00002 <span class="comment">//</span>
<a name="l00003"></a>00003 <span class="comment">// SFML - Simple and Fast Multimedia Library</span>
<a name="l00004"></a>00004 <span class="comment">// Copyright (C) 2007-2009 Laurent Gomila (laurent.gom@gmail.com)</span>
<a name="l00005"></a>00005 <span class="comment">//</span>
<a name="l00006"></a>00006 <span class="comment">// This software is provided 'as-is', without any express or implied warranty.</span>
<a name="l00007"></a>00007 <span class="comment">// In no event will the authors be held liable for any damages arising from the use of this software.</span>
<a name="l00008"></a>00008 <span class="comment">//</span>
<a name="l00009"></a>00009 <span class="comment">// Permission is granted to anyone to use this software for any purpose,</span>
<a name="l00010"></a>00010 <span class="comment">// including commercial applications, and to alter it and redistribute it freely,</span>
<a name="l00011"></a>00011 <span class="comment">// subject to the following restrictions:</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// 1. The origin of this software must not be misrepresented;</span>
<a name="l00014"></a>00014 <span class="comment">// you must not claim that you wrote the original software.</span>
<a name="l00015"></a>00015 <span class="comment">// If you use this software in a product, an acknowledgment</span>
<a name="l00016"></a>00016 <span class="comment">// in the product documentation would be appreciated but is not required.</span>
<a name="l00017"></a>00017 <span class="comment">//</span>
<a name="l00018"></a>00018 <span class="comment">// 2. Altered source versions must be plainly marked as such,</span>
<a name="l00019"></a>00019 <span class="comment">// and must not be misrepresented as being the original software.</span>
<a name="l00020"></a>00020 <span class="comment">//</span>
<a name="l00021"></a>00021 <span class="comment">// 3. This notice may not be removed or altered from any source distribution.</span>
<a name="l00022"></a>00022 <span class="comment">//</span>
<a name="l00024"></a>00024 <span class="comment"></span>
<a name="l00026"></a>00026 <span class="comment">// Headers</span>
<a name="l00028"></a>00028 <span class="comment"></span><span class="preprocessor">#include <SFML/Graphics/ImageLoader.hpp></span>
<a name="l00029"></a>00029 <span class="keyword">extern</span> <span class="stringliteral">"C"</span>
<a name="l00030"></a>00030 {
<a name="l00031"></a>00031 <span class="preprocessor"> #include <SFML/Graphics/libjpeg/jpeglib.h></span>
<a name="l00032"></a>00032 <span class="preprocessor"> #include <SFML/Graphics/libjpeg/jerror.h></span>
<a name="l00033"></a>00033 }
<a name="l00034"></a>00034 <span class="preprocessor">#include <SFML/Graphics/libpng/png.h></span>
<a name="l00035"></a>00035 <span class="preprocessor">#include <SFML/Graphics/SOIL/SOIL.h></span>
<a name="l00036"></a>00036 <span class="preprocessor">#include <iostream></span>
<a name="l00037"></a>00037
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="keyword">namespace</span>
<a name="l00040"></a>00040 {
<a name="l00044"></a>00044 <span class="keywordtype">void</span> PngErrorHandler(png_structp Png, png_const_charp Message)
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046 std::cerr << <span class="stringliteral">"Failed to write PNG image. Reason : "</span> << Message << std::endl;
<a name="l00047"></a>00047 longjmp(Png->jmpbuf, 1);
<a name="l00048"></a>00048 }
<a name="l00049"></a>00049 }
<a name="l00050"></a>00050
<a name="l00051"></a>00051
<a name="l00052"></a>00052 <span class="keyword">namespace </span>sf
<a name="l00053"></a>00053 {
<a name="l00054"></a>00054 <span class="keyword">namespace </span>priv
<a name="l00055"></a>00055 {
<a name="l00059"></a>00059 ImageLoader& ImageLoader::GetInstance()
<a name="l00060"></a>00060 {
<a name="l00061"></a>00061 <span class="keyword">static</span> ImageLoader Instance;
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="keywordflow">return</span> Instance;
<a name="l00064"></a>00064 }
<a name="l00065"></a>00065
<a name="l00066"></a>00066
<a name="l00070"></a>00070 ImageLoader::ImageLoader()
<a name="l00071"></a>00071 {
<a name="l00072"></a>00072 <span class="comment">// Nothing to do</span>
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074
<a name="l00075"></a>00075
<a name="l00079"></a>00079 ImageLoader::~ImageLoader()
<a name="l00080"></a>00080 {
<a name="l00081"></a>00081 <span class="comment">// Nothing to do</span>
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083
<a name="l00084"></a>00084
<a name="l00088"></a>00088 <span class="keywordtype">bool</span> ImageLoader::LoadImageFromFile(<span class="keyword">const</span> std::string& Filename, std::vector<Color>& Pixels, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& Width, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& Height)
<a name="l00089"></a>00089 {
<a name="l00090"></a>00090 <span class="comment">// Clear the array (just in case)</span>
<a name="l00091"></a>00091 Pixels.clear();
<a name="l00092"></a>00092
<a name="l00093"></a>00093 <span class="comment">// Load the image and get a pointer to the pixels in memory</span>
<a name="l00094"></a>00094 <span class="keywordtype">int</span> ImgWidth, ImgHeight, ImgChannels;
<a name="l00095"></a>00095 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* PixelsPtr = SOIL_load_image(Filename.c_str(), &ImgWidth, &ImgHeight, &ImgChannels, SOIL_LOAD_RGBA);
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <span class="keywordflow">if</span> (PixelsPtr)
<a name="l00098"></a>00098 {
<a name="l00099"></a>00099 <span class="comment">// Assign the image properties</span>
<a name="l00100"></a>00100 Width = ImgWidth;
<a name="l00101"></a>00101 Height = ImgHeight;
<a name="l00102"></a>00102
<a name="l00103"></a>00103 <span class="comment">// Copy the loaded pixels to the pixel buffer</span>
<a name="l00104"></a>00104 Pixels.resize(Width * Height);
<a name="l00105"></a>00105 memcpy(&Pixels[0], PixelsPtr, Width * Height * 4);
<a name="l00106"></a>00106
<a name="l00107"></a>00107 <span class="comment">// Free the loaded pixels (they are now in our own pixel buffer)</span>
<a name="l00108"></a>00108 SOIL_free_image_data(PixelsPtr);
<a name="l00109"></a>00109
<a name="l00110"></a>00110 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00111"></a>00111 }
<a name="l00112"></a>00112 <span class="keywordflow">else</span>
<a name="l00113"></a>00113 {
<a name="l00114"></a>00114 <span class="comment">// Error, failed to load the image</span>
<a name="l00115"></a>00115 std::cerr << <span class="stringliteral">"Failed to load image \""</span> << Filename << <span class="stringliteral">"\". Reason : "</span> << SOIL_last_result() << std::endl;
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00118"></a>00118 }
<a name="l00119"></a>00119 }
<a name="l00120"></a>00120
<a name="l00121"></a>00121
<a name="l00125"></a>00125 <span class="keywordtype">bool</span> ImageLoader::LoadImageFromMemory(<span class="keyword">const</span> <span class="keywordtype">char</span>* Data, std::size_t SizeInBytes, std::vector<Color>& Pixels, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& Width, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& Height)
<a name="l00126"></a>00126 {
<a name="l00127"></a>00127 <span class="comment">// Clear the array (just in case)</span>
<a name="l00128"></a>00128 Pixels.clear();
<a name="l00129"></a>00129
<a name="l00130"></a>00130 <span class="comment">// Load the image and get a pointer to the pixels in memory</span>
<a name="l00131"></a>00131 <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* Buffer = <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span><span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*<span class="keyword">></span>(Data);
<a name="l00132"></a>00132 <span class="keywordtype">int</span> Size = <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(SizeInBytes);
<a name="l00133"></a>00133 <span class="keywordtype">int</span> ImgWidth, ImgHeight, ImgChannels;
<a name="l00134"></a>00134 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* PixelsPtr = SOIL_load_image_from_memory(Buffer, Size, &ImgWidth, &ImgHeight, &ImgChannels, SOIL_LOAD_RGBA);
<a name="l00135"></a>00135
<a name="l00136"></a>00136 <span class="keywordflow">if</span> (PixelsPtr)
<a name="l00137"></a>00137 {
<a name="l00138"></a>00138 <span class="comment">// Assign the image properties</span>
<a name="l00139"></a>00139 Width = ImgWidth;
<a name="l00140"></a>00140 Height = ImgHeight;
<a name="l00141"></a>00141
<a name="l00142"></a>00142 <span class="comment">// Copy the loaded pixels to the pixel buffer</span>
<a name="l00143"></a>00143 Pixels.resize(Width * Height);
<a name="l00144"></a>00144 memcpy(&Pixels[0], PixelsPtr, Width * Height * 4);
<a name="l00145"></a>00145
<a name="l00146"></a>00146 <span class="comment">// Free the loaded pixels (they are now in our own pixel buffer)</span>
<a name="l00147"></a>00147 SOIL_free_image_data(PixelsPtr);
<a name="l00148"></a>00148
<a name="l00149"></a>00149 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00150"></a>00150 }
<a name="l00151"></a>00151 <span class="keywordflow">else</span>
<a name="l00152"></a>00152 {
<a name="l00153"></a>00153 <span class="comment">// Error, failed to load the image</span>
<a name="l00154"></a>00154 std::cerr << <span class="stringliteral">"Failed to load image from memory. Reason : "</span> << SOIL_last_result() << std::endl;
<a name="l00155"></a>00155
<a name="l00156"></a>00156 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00157"></a>00157 }
<a name="l00158"></a>00158 }
<a name="l00159"></a>00159
<a name="l00160"></a>00160
<a name="l00164"></a>00164 <span class="keywordtype">bool</span> ImageLoader::SaveImageToFile(<span class="keyword">const</span> std::string& Filename, <span class="keyword">const</span> std::vector<Color>& Pixels, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> Width, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> Height)
<a name="l00165"></a>00165 {
<a name="l00166"></a>00166 <span class="comment">// Deduce the image type from its extension</span>
<a name="l00167"></a>00167 <span class="keywordtype">int</span> Type = -1;
<a name="l00168"></a>00168 <span class="keywordflow">if</span> (Filename.size() > 3)
<a name="l00169"></a>00169 {
<a name="l00170"></a>00170 std::string Extension = Filename.substr(Filename.size() - 3);
<a name="l00171"></a>00171 <span class="keywordflow">if</span> (Extension == <span class="stringliteral">"bmp"</span> || Extension == <span class="stringliteral">"BMP"</span>) Type = SOIL_SAVE_TYPE_BMP;
<a name="l00172"></a>00172 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (Extension == <span class="stringliteral">"tga"</span> || Extension == <span class="stringliteral">"TGA"</span>) Type = SOIL_SAVE_TYPE_TGA;
<a name="l00173"></a>00173 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (Extension == <span class="stringliteral">"dds"</span> || Extension == <span class="stringliteral">"DDS"</span>) Type = SOIL_SAVE_TYPE_DDS;
<a name="l00174"></a>00174
<a name="l00175"></a>00175 <span class="comment">// Special handling for PNG and JPG -- not handled by SOIL</span>
<a name="l00176"></a>00176 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (Extension == <span class="stringliteral">"png"</span> || Extension == <span class="stringliteral">"PNG"</span>) <span class="keywordflow">return</span> WritePng(Filename, Pixels, Width, Height);
<a name="l00177"></a>00177 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (Extension == <span class="stringliteral">"jpg"</span> || Extension == <span class="stringliteral">"JPG"</span>) <span class="keywordflow">return</span> WriteJpg(Filename, Pixels, Width, Height);
<a name="l00178"></a>00178 }
<a name="l00179"></a>00179
<a name="l00180"></a>00180 <span class="keywordflow">if</span> (Type == -1)
<a name="l00181"></a>00181 {
<a name="l00182"></a>00182 <span class="comment">// Error, incompatible type</span>
<a name="l00183"></a>00183 std::cerr << <span class="stringliteral">"Failed to save image \""</span> << Filename << <span class="stringliteral">"\". Reason : this image format is not supported"</span> << std::endl;
<a name="l00184"></a>00184 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00185"></a>00185 }
<a name="l00186"></a>00186
<a name="l00187"></a>00187 <span class="comment">// Finally save the image</span>
<a name="l00188"></a>00188 <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* PixelsPtr = <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span><span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*<span class="keyword">></span>(&Pixels[0]);
<a name="l00189"></a>00189 <span class="keywordflow">if</span> (!SOIL_save_image(Filename.c_str(), Type, <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(Width), static_cast<int>(Height), 4, PixelsPtr))
<a name="l00190"></a>00190 {
<a name="l00191"></a>00191 <span class="comment">// Error, failed to save the image</span>
<a name="l00192"></a>00192 std::cerr << <span class="stringliteral">"Failed to save image \""</span> << Filename << <span class="stringliteral">"\". Reason : "</span> << SOIL_last_result() << std::endl;
<a name="l00193"></a>00193 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00194"></a>00194 }
<a name="l00195"></a>00195
<a name="l00196"></a>00196 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00197"></a>00197 }
<a name="l00198"></a>00198
<a name="l00199"></a>00199
<a name="l00203"></a>00203 <span class="keywordtype">bool</span> ImageLoader::WriteJpg(<span class="keyword">const</span> std::string& Filename, <span class="keyword">const</span> std::vector<Color>& Pixels, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> Width, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> Height)
<a name="l00204"></a>00204 {
<a name="l00205"></a>00205 <span class="comment">// Open the file to write in</span>
<a name="l00206"></a>00206 FILE* File = fopen(Filename.c_str(), <span class="stringliteral">"wb"</span>);
<a name="l00207"></a>00207 <span class="keywordflow">if</span> (!File)
<a name="l00208"></a>00208 {
<a name="l00209"></a>00209 std::cerr << <span class="stringliteral">"Failed to save image file \""</span> << Filename << <span class="stringliteral">"\". Reason : cannot open file"</span> << std::endl;
<a name="l00210"></a>00210 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00211"></a>00211 }
<a name="l00212"></a>00212
<a name="l00213"></a>00213 <span class="comment">// Initialize the error handler</span>
<a name="l00214"></a>00214 jpeg_compress_struct CompressInfo;
<a name="l00215"></a>00215 jpeg_error_mgr ErrorManager;
<a name="l00216"></a>00216 CompressInfo.err = jpeg_std_error(&ErrorManager);
<a name="l00217"></a>00217
<a name="l00218"></a>00218 <span class="comment">// Initialize all the writing and compression infos</span>
<a name="l00219"></a>00219 jpeg_create_compress(&CompressInfo);
<a name="l00220"></a>00220 CompressInfo.image_width = Width;
<a name="l00221"></a>00221 CompressInfo.image_height = Height;
<a name="l00222"></a>00222 CompressInfo.input_components = 3;
<a name="l00223"></a>00223 CompressInfo.in_color_space = JCS_RGB;
<a name="l00224"></a>00224 jpeg_stdio_dest(&CompressInfo, File);
<a name="l00225"></a>00225 jpeg_set_defaults(&CompressInfo);
<a name="l00226"></a>00226 jpeg_set_quality(&CompressInfo, 90, TRUE);
<a name="l00227"></a>00227
<a name="l00228"></a>00228 <span class="comment">// Get rid of the aplha channel</span>
<a name="l00229"></a>00229 std::vector<Uint8> PixelsBuffer(Width * Height * 3);
<a name="l00230"></a>00230 <span class="keywordflow">for</span> (std::size_t i = 0; i < Pixels.size(); ++i)
<a name="l00231"></a>00231 {
<a name="l00232"></a>00232 PixelsBuffer[i * 3 + 0] = Pixels[i].r;
<a name="l00233"></a>00233 PixelsBuffer[i * 3 + 1] = Pixels[i].g;
<a name="l00234"></a>00234 PixelsBuffer[i * 3 + 2] = Pixels[i].b;
<a name="l00235"></a>00235 }
<a name="l00236"></a>00236 Uint8* PixelsPtr = &PixelsBuffer[0];
<a name="l00237"></a>00237
<a name="l00238"></a>00238 <span class="comment">// Start compression</span>
<a name="l00239"></a>00239 jpeg_start_compress(&CompressInfo, TRUE);
<a name="l00240"></a>00240
<a name="l00241"></a>00241 <span class="comment">// Write each row of the image</span>
<a name="l00242"></a>00242 <span class="keywordflow">while</span> (CompressInfo.next_scanline < CompressInfo.image_height)
<a name="l00243"></a>00243 {
<a name="l00244"></a>00244 JSAMPROW RowPointer = PixelsPtr + (CompressInfo.next_scanline * Width * 3);
<a name="l00245"></a>00245 jpeg_write_scanlines(&CompressInfo, &RowPointer, 1);
<a name="l00246"></a>00246 }
<a name="l00247"></a>00247
<a name="l00248"></a>00248 <span class="comment">// Finish compression</span>
<a name="l00249"></a>00249 jpeg_finish_compress(&CompressInfo);
<a name="l00250"></a>00250 jpeg_destroy_compress(&CompressInfo);
<a name="l00251"></a>00251
<a name="l00252"></a>00252 <span class="comment">// Close the file</span>
<a name="l00253"></a>00253 fclose(File);
<a name="l00254"></a>00254
<a name="l00255"></a>00255 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00256"></a>00256 }
<a name="l00257"></a>00257
<a name="l00258"></a>00258
<a name="l00262"></a>00262 <span class="keywordtype">bool</span> ImageLoader::WritePng(<span class="keyword">const</span> std::string& Filename, <span class="keyword">const</span> std::vector<Color>& Pixels, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> Width, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> Height)
<a name="l00263"></a>00263 {
<a name="l00264"></a>00264 <span class="comment">// Open the file to write in</span>
<a name="l00265"></a>00265 FILE* File = fopen(Filename.c_str(), <span class="stringliteral">"wb"</span>);
<a name="l00266"></a>00266 <span class="keywordflow">if</span> (!File)
<a name="l00267"></a>00267 {
<a name="l00268"></a>00268 std::cerr << <span class="stringliteral">"Failed to save image file \""</span> << Filename << <span class="stringliteral">"\". Reason : cannot open file"</span> << std::endl;
<a name="l00269"></a>00269 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00270"></a>00270 }
<a name="l00271"></a>00271
<a name="l00272"></a>00272 <span class="comment">// Create the main PNG structure</span>
<a name="l00273"></a>00273 png_structp Png = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, &PngErrorHandler, NULL);
<a name="l00274"></a>00274 <span class="keywordflow">if</span> (!Png)
<a name="l00275"></a>00275 {
<a name="l00276"></a>00276 fclose(File);
<a name="l00277"></a>00277 std::cerr << <span class="stringliteral">"Failed to save image file \""</span> << Filename << <span class="stringliteral">"\". Reason : cannot allocate PNG write structure"</span> << std::endl;
<a name="l00278"></a>00278 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00279"></a>00279 }
<a name="l00280"></a>00280
<a name="l00281"></a>00281 <span class="comment">// Initialize the image informations</span>
<a name="l00282"></a>00282 png_infop PngInfo = png_create_info_struct(Png);
<a name="l00283"></a>00283 <span class="keywordflow">if</span> (!PngInfo)
<a name="l00284"></a>00284 {
<a name="l00285"></a>00285 fclose(File);
<a name="l00286"></a>00286 png_destroy_write_struct(&Png, NULL);
<a name="l00287"></a>00287 std::cerr << <span class="stringliteral">"Failed to save image file \""</span> << Filename << <span class="stringliteral">"\". Reason : cannot allocate PNG info structure"</span> << std::endl;
<a name="l00288"></a>00288 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00289"></a>00289 }
<a name="l00290"></a>00290
<a name="l00291"></a>00291 <span class="comment">// For proper error handling...</span>
<a name="l00292"></a>00292 <span class="keywordflow">if</span> (setjmp(Png->jmpbuf))
<a name="l00293"></a>00293 {
<a name="l00294"></a>00294 png_destroy_write_struct(&Png, &PngInfo);
<a name="l00295"></a>00295 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00296"></a>00296 }
<a name="l00297"></a>00297
<a name="l00298"></a>00298 <span class="comment">// Link the file to the PNG structure</span>
<a name="l00299"></a>00299 png_init_io(Png, File);
<a name="l00300"></a>00300
<a name="l00301"></a>00301 <span class="comment">// Set the image informations</span>
<a name="l00302"></a>00302 png_set_IHDR(Png, PngInfo, Width, Height, 8, PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
<a name="l00303"></a>00303
<a name="l00304"></a>00304 <span class="comment">// Write the header</span>
<a name="l00305"></a>00305 png_write_info(Png, PngInfo);
<a name="l00306"></a>00306
<a name="l00307"></a>00307 <span class="comment">// Get the pointers to the pixels rows into an array</span>
<a name="l00308"></a>00308 png_byte* PixelsPtr = (png_byte*)&Pixels[0];
<a name="l00309"></a>00309 std::vector<png_byte*> RowPointers(Height);
<a name="l00310"></a>00310 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < Height; ++i)
<a name="l00311"></a>00311 {
<a name="l00312"></a>00312 RowPointers[i] = PixelsPtr;
<a name="l00313"></a>00313 PixelsPtr += Width * 4;
<a name="l00314"></a>00314 }
<a name="l00315"></a>00315
<a name="l00316"></a>00316 <span class="comment">// Write pixels row by row</span>
<a name="l00317"></a>00317 png_set_rows(Png, PngInfo, &RowPointers[0]);
<a name="l00318"></a>00318 png_write_png(Png, PngInfo, PNG_TRANSFORM_IDENTITY, NULL);
<a name="l00319"></a>00319
<a name="l00320"></a>00320 <span class="comment">// Finish writing the file</span>
<a name="l00321"></a>00321 png_write_end(Png, PngInfo);
<a name="l00322"></a>00322
<a name="l00323"></a>00323 <span class="comment">// Cleanup resources</span>
<a name="l00324"></a>00324 png_destroy_write_struct(&Png, &PngInfo);
<a name="l00325"></a>00325 fclose(File);
<a name="l00326"></a>00326
<a name="l00327"></a>00327 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00328"></a>00328 }
<a name="l00329"></a>00329
<a name="l00330"></a>00330 } <span class="comment">// namespace priv</span>
<a name="l00331"></a>00331
<a name="l00332"></a>00332 } <span class="comment">// namespace sf</span>
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