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  43    &#160;<span id="projectnumber">v17.06</span>
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 118   <div class="summary">
 119 <a href="#pub-methods">Public Member Functions</a>  </div>
 120   <div class="headertitle">
 121 <div class="title">PPMLoader Class Reference</div>  </div>
 122 </div><!--header-->
 123 <div class="contents">
 124
 125 <p>Class to load the content of a PPM file into an <a class="el" href="struct_image.xhtml" title="Structure to hold Image information. ">Image</a>.
 126  <a href="classarm__compute_1_1utils_1_1_p_p_m_loader.xhtml#details">More...</a></p>
 127
 128 <p><code>#include &lt;<a class="el" href="utils_2_utils_8h_source.xhtml">Utils.h</a>&gt;</code></p>
 129 <table class="memberdecls">
 130 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
 131 Public Member Functions</h2></td></tr>
 132 <tr class="memitem:a49afa04c8a5fd9ead48e07440b37294c"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1_p_p_m_loader.xhtml#a49afa04c8a5fd9ead48e07440b37294c">PPMLoader</a> ()</td></tr>
 133 <tr class="separator:a49afa04c8a5fd9ead48e07440b37294c"><td class="memSeparator" colspan="2">&#160;</td></tr>
 134 <tr class="memitem:a36e58f3e64f3851ebac7a9556b4704ed"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1_p_p_m_loader.xhtml#a36e58f3e64f3851ebac7a9556b4704ed">open</a> (const std::string &amp;ppm_filename)</td></tr>
 135 <tr class="memdesc:a36e58f3e64f3851ebac7a9556b4704ed"><td class="mdescLeft">&#160;</td><td class="mdescRight">Open a PPM file and reads its metadata (Width, height)  <a href="#a36e58f3e64f3851ebac7a9556b4704ed">More...</a><br /></td></tr>
 136 <tr class="separator:a36e58f3e64f3851ebac7a9556b4704ed"><td class="memSeparator" colspan="2">&#160;</td></tr>
 137 <tr class="memitem:a2f57f54d8c03b615bb31eee091d8a88a"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1_p_p_m_loader.xhtml#a2f57f54d8c03b615bb31eee091d8a88a">is_open</a> ()</td></tr>
 138 <tr class="memdesc:a2f57f54d8c03b615bb31eee091d8a88a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return true if a PPM file is currently open.  <a href="#a2f57f54d8c03b615bb31eee091d8a88a">More...</a><br /></td></tr>
 139 <tr class="separator:a2f57f54d8c03b615bb31eee091d8a88a"><td class="memSeparator" colspan="2">&#160;</td></tr>
 140 <tr class="memitem:a69f2a0e263d4f77d1e166de9cd2746f7"><td class="memTemplParams" colspan="2">template&lt;typename T &gt; </td></tr>
 141 <tr class="memitem:a69f2a0e263d4f77d1e166de9cd2746f7"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1_p_p_m_loader.xhtml#a69f2a0e263d4f77d1e166de9cd2746f7">init_image</a> (T &amp;image, <a class="el" href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58">arm_compute::Format</a> format)</td></tr>
 142 <tr class="memdesc:a69f2a0e263d4f77d1e166de9cd2746f7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Initialise an image's metadata with the dimensions of the PPM file currently open.  <a href="#a69f2a0e263d4f77d1e166de9cd2746f7">More...</a><br /></td></tr>
 143 <tr class="separator:a69f2a0e263d4f77d1e166de9cd2746f7"><td class="memSeparator" colspan="2">&#160;</td></tr>
 144 <tr class="memitem:a1672610b872bef30d0dc2333a0ffc402"><td class="memTemplParams" colspan="2">template&lt;typename T &gt; </td></tr>
 145 <tr class="memitem:a1672610b872bef30d0dc2333a0ffc402"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1_p_p_m_loader.xhtml#a1672610b872bef30d0dc2333a0ffc402">fill_image</a> (T &amp;image)</td></tr>
 146 <tr class="memdesc:a1672610b872bef30d0dc2333a0ffc402"><td class="mdescLeft">&#160;</td><td class="mdescRight">Fill an image with the content of the currently open PPM file.  <a href="#a1672610b872bef30d0dc2333a0ffc402">More...</a><br /></td></tr>
 147 <tr class="separator:a1672610b872bef30d0dc2333a0ffc402"><td class="memSeparator" colspan="2">&#160;</td></tr>
 148 </table>
 149 <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
 150 <div class="textblock"><p>Class to load the content of a PPM file into an <a class="el" href="struct_image.xhtml" title="Structure to hold Image information. ">Image</a>. </p>
 151
 152 <p>Definition at line <a class="el" href="utils_2_utils_8h_source.xhtml#l00083">83</a> of file <a class="el" href="utils_2_utils_8h_source.xhtml">Utils.h</a>.</p>
 153 </div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
 154 <a class="anchor" id="a49afa04c8a5fd9ead48e07440b37294c"></a>
 155 <div class="memitem">
 156 <div class="memproto">
 157 <table class="mlabels">
 158   <tr>
 159   <td class="mlabels-left">
 160       <table class="memname">
 161         <tr>
 162           <td class="memname"><a class="el" href="classarm__compute_1_1utils_1_1_p_p_m_loader.xhtml">PPMLoader</a> </td>
 163           <td>(</td>
 164           <td class="paramname"></td><td>)</td>
 165           <td></td>
 166         </tr>
 167       </table>
 168   </td>
 169   <td class="mlabels-right">
 170 <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
 171   </tr>
 172 </table>
 173 </div><div class="memdoc">
 174
 175 <p>Definition at line <a class="el" href="utils_2_utils_8h_source.xhtml#l00086">86</a> of file <a class="el" href="utils_2_utils_8h_source.xhtml">Utils.h</a>.</p>
 176 <div class="fragment"><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;        : _fs(), _width(0), _height(0)</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;    {</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    }</div></div><!-- fragment -->
 177 </div>
 178 </div>
 179 <h2 class="groupheader">Member Function Documentation</h2>
 180 <a class="anchor" id="a1672610b872bef30d0dc2333a0ffc402"></a>
 181 <div class="memitem">
 182 <div class="memproto">
 183 <table class="mlabels">
 184   <tr>
 185   <td class="mlabels-left">
 186       <table class="memname">
 187         <tr>
 188           <td class="memname">void fill_image </td>
 189           <td>(</td>
 190           <td class="paramtype">T &amp;&#160;</td>
 191           <td class="paramname"><em>image</em></td><td>)</td>
 192           <td></td>
 193         </tr>
 194       </table>
 195   </td>
 196   <td class="mlabels-right">
 197 <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
 198   </tr>
 199 </table>
 200 </div><div class="memdoc">
 201
 202 <p>Fill an image with the content of the currently open PPM file. </p>
 203 <dl class="section note"><dt>Note</dt><dd>If the image is a CLImage, the function maps and unmaps the image</dd></dl>
 204 <dl class="params"><dt>Parameters</dt><dd>
 205   <table class="params">
 206     <tr><td class="paramdir">[in,out]</td><td class="paramname">image</td><td><a class="el" href="struct_image.xhtml" title="Structure to hold Image information. ">Image</a> to fill (Must be allocated, and of matching dimensions with the opened PPM). </td></tr>
 207   </table>
 208   </dd>
 209 </dl>
 210
 211 <p>Definition at line <a class="el" href="utils_2_utils_8h_source.xhtml#l00142">142</a> of file <a class="el" href="utils_2_utils_8h_source.xhtml">Utils.h</a>.</p>
 212
 213 <p>References <a class="el" href="_error_8h_source.xhtml#l00031">ARM_COMPUTE_ERROR</a>, <a class="el" href="_error_8h_source.xhtml#l00124">ARM_COMPUTE_ERROR_ON</a>, <a class="el" href="_validate_8h_source.xhtml#l00359">ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN</a>, <a class="el" href="_error_8h_source.xhtml#l00115">ARM_COMPUTE_ERROR_ON_MSG</a>, <a class="el" href="_error_8h_source.xhtml#l00049">ARM_COMPUTE_UNUSED</a>, <a class="el" href="_window_8h_source.xhtml#l00043">Window::DimX</a>, <a class="el" href="_window_8h_source.xhtml#l00045">Window::DimY</a>, <a class="el" href="_helpers_8inl_source.xhtml#l00176">arm_compute::execute_window_loop()</a>, <a class="el" href="utils_2_utils_8h_source.xhtml#l00114">PPMLoader::is_open()</a>, <a class="el" href="_helpers_8inl_source.xhtml#l00232">Iterator::ptr()</a>, <a class="el" href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58a30ff380a3be74628024063a99fba10f0">arm_compute::RGB888</a>, <a class="el" href="_window_8inl_source.xhtml#l00040">Window::set()</a>, and <a class="el" href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58a6669348b484e3008dca2bfa8e85e40b5">arm_compute::U8</a>.</p>
 214
 215 <p>Referenced by <a class="el" href="cl__convolution_8cpp_source.xhtml#l00053">main_cl_convolution()</a>, <a class="el" href="cl__events_8cpp_source.xhtml#l00033">main_cl_events()</a>, <a class="el" href="neon__convolution_8cpp_source.xhtml#l00052">main_neon_convolution()</a>, <a class="el" href="neon__scale_8cpp_source.xhtml#l00032">main_neon_scale()</a>, and <a class="el" href="neoncl__scale__median__gaussian_8cpp_source.xhtml#l00039">main_neoncl_scale_median_gaussian()</a>.</p>
 216 <div class="fragment"><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;    {</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;        <a class="code" href="_error_8h.xhtml#a54a6080c9f4df1f908e57a9bbb46f5da">ARM_COMPUTE_ERROR_ON</a>(!<a class="code" href="classarm__compute_1_1utils_1_1_p_p_m_loader.xhtml#a2f57f54d8c03b615bb31eee091d8a88a">is_open</a>());</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;        <a class="code" href="_error_8h.xhtml#a54a6080c9f4df1f908e57a9bbb46f5da">ARM_COMPUTE_ERROR_ON</a>(image.info()-&gt;dimension(0) != _width || image.info()-&gt;dimension(1) != _height);</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;        <a class="code" href="_validate_8h.xhtml#a0d34a8aa07600727e4e5034c7cdad47d">ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN</a>(&amp;image, <a class="code" href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58a6669348b484e3008dca2bfa8e85e40b5">arm_compute::Format::U8</a>, <a class="code" href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58a30ff380a3be74628024063a99fba10f0">arm_compute::Format::RGB888</a>);</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;        <span class="keywordflow">try</span></div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;        {</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;<span class="preprocessor">#ifdef ARM_COMPUTE_CL</span></div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;            <span class="comment">// Map buffer if creating a CLTensor</span></div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;            <span class="keywordflow">if</span>(std::is_same&lt;<span class="keyword">typename</span> std::decay&lt;T&gt;::type, <a class="code" href="classarm__compute_1_1_c_l_tensor.xhtml">arm_compute::CLImage</a>&gt;::value)</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;            {</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;                image.map();</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;            }</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;            <span class="comment">// Check if the file is large enough to fill the image</span></div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">size_t</span> current_position = _fs.tellg();</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;            _fs.seekg(0, std::ios_base::end);</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">size_t</span> end_position = _fs.tellg();</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;            _fs.seekg(current_position, std::ios_base::beg);</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;            <a class="code" href="_error_8h.xhtml#a5bbdcf574d3f5e412fa6a1117911e67b">ARM_COMPUTE_ERROR_ON_MSG</a>((end_position - current_position) &lt; image.info()-&gt;tensor_shape().total_size() * image.info()-&gt;element_size(),</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;                                     <span class="stringliteral">&quot;Not enough data in file&quot;</span>);</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;            <a class="code" href="_error_8h.xhtml#a4103adbb45806b2f2002d44b91d0d206">ARM_COMPUTE_UNUSED</a>(end_position);</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;            <span class="keywordflow">switch</span>(image.info()-&gt;format())</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;            {</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;                <span class="keywordflow">case</span> <a class="code" href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58a6669348b484e3008dca2bfa8e85e40b5">arm_compute::Format::U8</a>:</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;                {</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;                    <span class="comment">// We need to convert the data from RGB to grayscale:</span></div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;                    <span class="comment">// Iterate through every pixel of the image</span></div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;                    <a class="code" href="classarm__compute_1_1_window.xhtml">arm_compute::Window</a> window;</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;                    window.<a class="code" href="classarm__compute_1_1_window.xhtml#acd3d2bba51cb84d34dd7656ad2375a6e">set</a>(<a class="code" href="classarm__compute_1_1_window.xhtml#aa96e81276ee4f87ab386cd05a5539a7d">arm_compute::Window::DimX</a>, <a class="code" href="classarm__compute_1_1_window_1_1_dimension.xhtml">arm_compute::Window::Dimension</a>(0, _width, 1));</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;                    window.<a class="code" href="classarm__compute_1_1_window.xhtml#acd3d2bba51cb84d34dd7656ad2375a6e">set</a>(<a class="code" href="classarm__compute_1_1_window.xhtml#ad2d402364fa822b0b7775081291eeca9">arm_compute::Window::DimY</a>, <a class="code" href="classarm__compute_1_1_window_1_1_dimension.xhtml">arm_compute::Window::Dimension</a>(0, _height, 1));</div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;                    <a class="code" href="classarm__compute_1_1_iterator.xhtml">arm_compute::Iterator</a> out(&amp;image, window);</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;                    <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> red   = 0;</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;                    <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> green = 0;</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;                    <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> blue  = 0;</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;                    <a class="code" href="namespacearm__compute.xhtml#a6c0dcc38187027dcb89cd9724bc5a823">arm_compute::execute_window_loop</a>(window, [&amp;](<span class="keyword">const</span> <a class="code" href="classarm__compute_1_1_coordinates.xhtml">arm_compute::Coordinates</a> &amp; <span class="keywordtype">id</span>)</div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;                    {</div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;                        red   = _fs.get();</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;                        green = _fs.get();</div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;                        blue  = _fs.get();</div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;                        *out.ptr() = 0.2126f * red + 0.7152f * green + 0.0722f * blue;</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;                    },</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;                    out);</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;</div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;                    <span class="keywordflow">break</span>;</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;                }</div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;                <span class="keywordflow">case</span> <a class="code" href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58a30ff380a3be74628024063a99fba10f0">arm_compute::Format::RGB888</a>:</div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;                {</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;                    <span class="comment">// There is no format conversion needed: we can simply copy the content of the input file to the image one row at the time.</span></div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;                    <span class="comment">// Create a vertical window to iterate through the image&#39;s rows:</span></div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;                    <a class="code" href="classarm__compute_1_1_window.xhtml">arm_compute::Window</a> window;</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;                    window.<a class="code" href="classarm__compute_1_1_window.xhtml#acd3d2bba51cb84d34dd7656ad2375a6e">set</a>(<a class="code" href="classarm__compute_1_1_window.xhtml#ad2d402364fa822b0b7775081291eeca9">arm_compute::Window::DimY</a>, <a class="code" href="classarm__compute_1_1_window_1_1_dimension.xhtml">arm_compute::Window::Dimension</a>(0, _height, 1));</div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;</div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;                    <a class="code" href="classarm__compute_1_1_iterator.xhtml">arm_compute::Iterator</a> out(&amp;image, window);</div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;</div><div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;                    <a class="code" href="namespacearm__compute.xhtml#a6c0dcc38187027dcb89cd9724bc5a823">arm_compute::execute_window_loop</a>(window, [&amp;](<span class="keyword">const</span> <a class="code" href="classarm__compute_1_1_coordinates.xhtml">arm_compute::Coordinates</a> &amp; <span class="keywordtype">id</span>)</div><div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;                    {</div><div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;                        <span class="comment">// Copy one row from the input file to the current row of the image:</span></div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;                        _fs.read(reinterpret_cast&lt;std::fstream::char_type *&gt;(out.ptr()), _width * image.info()-&gt;element_size());</div><div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;                    },</div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;                    out);</div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;</div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;                    <span class="keywordflow">break</span>;</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;                }</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;                <span class="keywordflow">default</span>:</div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;                    <a class="code" href="_error_8h.xhtml#a05b19c75afe9c24200a62b9724734bbd">ARM_COMPUTE_ERROR</a>(<span class="stringliteral">&quot;Unsupported format&quot;</span>);</div><div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;            }</div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;</div><div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;<span class="preprocessor">#ifdef ARM_COMPUTE_CL</span></div><div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;            <span class="comment">// Unmap buffer if creating a CLTensor</span></div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;            <span class="keywordflow">if</span>(std::is_same&lt;<span class="keyword">typename</span> std::decay&lt;T&gt;::type, <a class="code" href="classarm__compute_1_1_c_l_tensor.xhtml">arm_compute::CLTensor</a>&gt;::value)</div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;            {</div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;                image.unmap();</div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;            }</div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;        }</div><div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;        <span class="keywordflow">catch</span>(<span class="keyword">const</span> std::ifstream::failure &amp;e)</div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;        {</div><div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;            <a class="code" href="_error_8h.xhtml#a05b19c75afe9c24200a62b9724734bbd">ARM_COMPUTE_ERROR</a>(<span class="stringliteral">&quot;Loading PPM file: %s&quot;</span>, e.what());</div><div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;        }</div><div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;    }</div><div class="ttc" id="_error_8h_xhtml_a05b19c75afe9c24200a62b9724734bbd"><div class="ttname"><a href="_error_8h.xhtml#a05b19c75afe9c24200a62b9724734bbd">ARM_COMPUTE_ERROR</a></div><div class="ttdeci">#define ARM_COMPUTE_ERROR(...)</div><div class="ttdoc">Print the given message then throw an std::runtime_error. </div><div class="ttdef"><b>Definition:</b> <a href="_error_8h_source.xhtml#l00031">Error.h:31</a></div></div>
 217 <div class="ttc" id="namespacearm__compute_xhtml_ab4e88c89b3b7ea1735996cc4def22d58a6669348b484e3008dca2bfa8e85e40b5"><div class="ttname"><a href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58a6669348b484e3008dca2bfa8e85e40b5">arm_compute::Format::U8</a></div><div class="ttdoc">Unknown image format. </div></div>
 218 <div class="ttc" id="_validate_8h_xhtml_a0d34a8aa07600727e4e5034c7cdad47d"><div class="ttname"><a href="_validate_8h.xhtml#a0d34a8aa07600727e4e5034c7cdad47d">ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN</a></div><div class="ttdeci">#define ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(t,...)</div><div class="ttdef"><b>Definition:</b> <a href="_validate_8h_source.xhtml#l00359">Validate.h:359</a></div></div>
 219 <div class="ttc" id="_error_8h_xhtml_a4103adbb45806b2f2002d44b91d0d206"><div class="ttname"><a href="_error_8h.xhtml#a4103adbb45806b2f2002d44b91d0d206">ARM_COMPUTE_UNUSED</a></div><div class="ttdeci">#define ARM_COMPUTE_UNUSED(var)</div><div class="ttdoc">To avoid unused variables warnings. </div><div class="ttdef"><b>Definition:</b> <a href="_error_8h_source.xhtml#l00049">Error.h:49</a></div></div>
 220 <div class="ttc" id="_error_8h_xhtml_a54a6080c9f4df1f908e57a9bbb46f5da"><div class="ttname"><a href="_error_8h.xhtml#a54a6080c9f4df1f908e57a9bbb46f5da">ARM_COMPUTE_ERROR_ON</a></div><div class="ttdeci">#define ARM_COMPUTE_ERROR_ON(cond)</div><div class="ttdoc">If the condition is true then an error message is printed and an exception thrown. </div><div class="ttdef"><b>Definition:</b> <a href="_error_8h_source.xhtml#l00124">Error.h:124</a></div></div>
 221 <div class="ttc" id="classarm__compute_1_1_window_1_1_dimension_xhtml"><div class="ttname"><a href="classarm__compute_1_1_window_1_1_dimension.xhtml">arm_compute::Window::Dimension</a></div><div class="ttdoc">Describe one of the image&amp;#39;s dimensions with a start, end and step. </div><div class="ttdef"><b>Definition:</b> <a href="_window_8h_source.xhtml#l00068">Window.h:68</a></div></div>
 222 <div class="ttc" id="namespacearm__compute_xhtml_ab4e88c89b3b7ea1735996cc4def22d58a30ff380a3be74628024063a99fba10f0"><div class="ttname"><a href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58a30ff380a3be74628024063a99fba10f0">arm_compute::Format::RGB888</a></div><div class="ttdoc">2 channel, 1 U8 per channel </div></div>
 223 <div class="ttc" id="classarm__compute_1_1_window_xhtml_aa96e81276ee4f87ab386cd05a5539a7d"><div class="ttname"><a href="classarm__compute_1_1_window.xhtml#aa96e81276ee4f87ab386cd05a5539a7d">arm_compute::Window::DimX</a></div><div class="ttdeci">static constexpr size_t DimX</div><div class="ttdoc">Alias for dimension 0 also known as X dimension. </div><div class="ttdef"><b>Definition:</b> <a href="_window_8h_source.xhtml#l00043">Window.h:43</a></div></div>
 224 <div class="ttc" id="namespacearm__compute_xhtml_a6c0dcc38187027dcb89cd9724bc5a823"><div class="ttname"><a href="namespacearm__compute.xhtml#a6c0dcc38187027dcb89cd9724bc5a823">arm_compute::execute_window_loop</a></div><div class="ttdeci">void execute_window_loop(const Window &amp;w, L &amp;&amp;lambda_function, Ts &amp;&amp;...iterators)</div><div class="ttdoc">Iterate through the passed window, automatically adjusting the iterators and calling the lambda_funct...</div><div class="ttdef"><b>Definition:</b> <a href="_helpers_8inl_source.xhtml#l00176">Helpers.inl:176</a></div></div>
 225 <div class="ttc" id="classarm__compute_1_1_coordinates_xhtml"><div class="ttname"><a href="classarm__compute_1_1_coordinates.xhtml">arm_compute::Coordinates</a></div><div class="ttdoc">Coordinates of an item. </div><div class="ttdef"><b>Definition:</b> <a href="_coordinates_8h_source.xhtml#l00037">Coordinates.h:37</a></div></div>
 226 <div class="ttc" id="classarm__compute_1_1utils_1_1_p_p_m_loader_xhtml_a2f57f54d8c03b615bb31eee091d8a88a"><div class="ttname"><a href="classarm__compute_1_1utils_1_1_p_p_m_loader.xhtml#a2f57f54d8c03b615bb31eee091d8a88a">arm_compute::utils::PPMLoader::is_open</a></div><div class="ttdeci">bool is_open()</div><div class="ttdoc">Return true if a PPM file is currently open. </div><div class="ttdef"><b>Definition:</b> <a href="utils_2_utils_8h_source.xhtml#l00114">Utils.h:114</a></div></div>
 227 <div class="ttc" id="classarm__compute_1_1_window_xhtml_acd3d2bba51cb84d34dd7656ad2375a6e"><div class="ttname"><a href="classarm__compute_1_1_window.xhtml#acd3d2bba51cb84d34dd7656ad2375a6e">arm_compute::Window::set</a></div><div class="ttdeci">void set(size_t dimension, const Dimension &amp;dim)</div><div class="ttdoc">Set the values of a given dimension. </div><div class="ttdef"><b>Definition:</b> <a href="_window_8inl_source.xhtml#l00040">Window.inl:40</a></div></div>
 228 <div class="ttc" id="classarm__compute_1_1_window_xhtml_ad2d402364fa822b0b7775081291eeca9"><div class="ttname"><a href="classarm__compute_1_1_window.xhtml#ad2d402364fa822b0b7775081291eeca9">arm_compute::Window::DimY</a></div><div class="ttdeci">static constexpr size_t DimY</div><div class="ttdoc">Alias for dimension 1 also known as Y dimension. </div><div class="ttdef"><b>Definition:</b> <a href="_window_8h_source.xhtml#l00045">Window.h:45</a></div></div>
 229 <div class="ttc" id="classarm__compute_1_1_iterator_xhtml"><div class="ttname"><a href="classarm__compute_1_1_iterator.xhtml">arm_compute::Iterator</a></div><div class="ttdoc">Iterator updated by execute_window_loop for each window element. </div><div class="ttdef"><b>Definition:</b> <a href="arm__compute_2core_2_helpers_8h_source.xhtml#l00251">Helpers.h:251</a></div></div>
 230 <div class="ttc" id="classarm__compute_1_1_window_xhtml"><div class="ttname"><a href="classarm__compute_1_1_window.xhtml">arm_compute::Window</a></div><div class="ttdoc">Describe a multidimensional execution window. </div><div class="ttdef"><b>Definition:</b> <a href="_window_8h_source.xhtml#l00039">Window.h:39</a></div></div>
 231 <div class="ttc" id="_error_8h_xhtml_a5bbdcf574d3f5e412fa6a1117911e67b"><div class="ttname"><a href="_error_8h.xhtml#a5bbdcf574d3f5e412fa6a1117911e67b">ARM_COMPUTE_ERROR_ON_MSG</a></div><div class="ttdeci">#define ARM_COMPUTE_ERROR_ON_MSG(cond,...)</div><div class="ttdef"><b>Definition:</b> <a href="_error_8h_source.xhtml#l00115">Error.h:115</a></div></div>
 232 <div class="ttc" id="classarm__compute_1_1_c_l_tensor_xhtml"><div class="ttname"><a href="classarm__compute_1_1_c_l_tensor.xhtml">arm_compute::CLTensor</a></div><div class="ttdoc">Basic implementation of the OpenCL tensor interface. </div><div class="ttdef"><b>Definition:</b> <a href="_c_l_tensor_8h_source.xhtml#l00039">CLTensor.h:39</a></div></div>
 233 </div><!-- fragment -->
 234 </div>
 235 </div>
 236 <a class="anchor" id="a69f2a0e263d4f77d1e166de9cd2746f7"></a>
 237 <div class="memitem">
 238 <div class="memproto">
 239 <table class="mlabels">
 240   <tr>
 241   <td class="mlabels-left">
 242       <table class="memname">
 243         <tr>
 244           <td class="memname">void init_image </td>
 245           <td>(</td>
 246           <td class="paramtype">T &amp;&#160;</td>
 247           <td class="paramname"><em>image</em>, </td>
 248         </tr>
 249         <tr>
 250           <td class="paramkey"></td>
 251           <td></td>
 252           <td class="paramtype"><a class="el" href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58">arm_compute::Format</a>&#160;</td>
 253           <td class="paramname"><em>format</em>&#160;</td>
 254         </tr>
 255         <tr>
 256           <td></td>
 257           <td>)</td>
 258           <td></td><td></td>
 259         </tr>
 260       </table>
 261   </td>
 262   <td class="mlabels-right">
 263 <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
 264   </tr>
 265 </table>
 266 </div><div class="memdoc">
 267
 268 <p>Initialise an image's metadata with the dimensions of the PPM file currently open. </p>
 269 <dl class="params"><dt>Parameters</dt><dd>
 270   <table class="params">
 271     <tr><td class="paramdir">[out]</td><td class="paramname">image</td><td><a class="el" href="struct_image.xhtml" title="Structure to hold Image information. ">Image</a> to initialise </td></tr>
 272     <tr><td class="paramdir">[in]</td><td class="paramname">format</td><td>Format to use for the image (Must be RGB888 or U8) </td></tr>
 273   </table>
 274   </dd>
 275 </dl>
 276
 277 <p>Definition at line <a class="el" href="utils_2_utils_8h_source.xhtml#l00125">125</a> of file <a class="el" href="utils_2_utils_8h_source.xhtml">Utils.h</a>.</p>
 278
 279 <p>References <a class="el" href="_error_8h_source.xhtml#l00124">ARM_COMPUTE_ERROR_ON</a>, <a class="el" href="utils_2_utils_8h_source.xhtml#l00114">PPMLoader::is_open()</a>, <a class="el" href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58a30ff380a3be74628024063a99fba10f0">arm_compute::RGB888</a>, and <a class="el" href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58a6669348b484e3008dca2bfa8e85e40b5">arm_compute::U8</a>.</p>
 280
 281 <p>Referenced by <a class="el" href="cl__convolution_8cpp_source.xhtml#l00053">main_cl_convolution()</a>, <a class="el" href="cl__events_8cpp_source.xhtml#l00033">main_cl_events()</a>, <a class="el" href="neon__convolution_8cpp_source.xhtml#l00052">main_neon_convolution()</a>, <a class="el" href="neon__scale_8cpp_source.xhtml#l00032">main_neon_scale()</a>, and <a class="el" href="neoncl__scale__median__gaussian_8cpp_source.xhtml#l00039">main_neoncl_scale_median_gaussian()</a>.</p>
 282 <div class="fragment"><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;    {</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;        <a class="code" href="_error_8h.xhtml#a54a6080c9f4df1f908e57a9bbb46f5da">ARM_COMPUTE_ERROR_ON</a>(!<a class="code" href="classarm__compute_1_1utils_1_1_p_p_m_loader.xhtml#a2f57f54d8c03b615bb31eee091d8a88a">is_open</a>());</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;        <a class="code" href="_error_8h.xhtml#a54a6080c9f4df1f908e57a9bbb46f5da">ARM_COMPUTE_ERROR_ON</a>(format != <a class="code" href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58a30ff380a3be74628024063a99fba10f0">arm_compute::Format::RGB888</a> &amp;&amp; format != <a class="code" href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58a6669348b484e3008dca2bfa8e85e40b5">arm_compute::Format::U8</a>);</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;        <span class="comment">// Use the size of the input PPM image</span></div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;        <a class="code" href="classarm__compute_1_1_tensor_info.xhtml">arm_compute::TensorInfo</a> image_info(_width, _height, format);</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;        image.allocator()-&gt;init(image_info);</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;    }</div><div class="ttc" id="namespacearm__compute_xhtml_ab4e88c89b3b7ea1735996cc4def22d58a6669348b484e3008dca2bfa8e85e40b5"><div class="ttname"><a href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58a6669348b484e3008dca2bfa8e85e40b5">arm_compute::Format::U8</a></div><div class="ttdoc">Unknown image format. </div></div>
 283 <div class="ttc" id="_error_8h_xhtml_a54a6080c9f4df1f908e57a9bbb46f5da"><div class="ttname"><a href="_error_8h.xhtml#a54a6080c9f4df1f908e57a9bbb46f5da">ARM_COMPUTE_ERROR_ON</a></div><div class="ttdeci">#define ARM_COMPUTE_ERROR_ON(cond)</div><div class="ttdoc">If the condition is true then an error message is printed and an exception thrown. </div><div class="ttdef"><b>Definition:</b> <a href="_error_8h_source.xhtml#l00124">Error.h:124</a></div></div>
 284 <div class="ttc" id="namespacearm__compute_xhtml_ab4e88c89b3b7ea1735996cc4def22d58a30ff380a3be74628024063a99fba10f0"><div class="ttname"><a href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58a30ff380a3be74628024063a99fba10f0">arm_compute::Format::RGB888</a></div><div class="ttdoc">2 channel, 1 U8 per channel </div></div>
 285 <div class="ttc" id="classarm__compute_1_1utils_1_1_p_p_m_loader_xhtml_a2f57f54d8c03b615bb31eee091d8a88a"><div class="ttname"><a href="classarm__compute_1_1utils_1_1_p_p_m_loader.xhtml#a2f57f54d8c03b615bb31eee091d8a88a">arm_compute::utils::PPMLoader::is_open</a></div><div class="ttdeci">bool is_open()</div><div class="ttdoc">Return true if a PPM file is currently open. </div><div class="ttdef"><b>Definition:</b> <a href="utils_2_utils_8h_source.xhtml#l00114">Utils.h:114</a></div></div>
 286 <div class="ttc" id="classarm__compute_1_1_tensor_info_xhtml"><div class="ttname"><a href="classarm__compute_1_1_tensor_info.xhtml">arm_compute::TensorInfo</a></div><div class="ttdoc">Store the tensor&amp;#39;s metadata. </div><div class="ttdef"><b>Definition:</b> <a href="_tensor_info_8h_source.xhtml#l00042">TensorInfo.h:42</a></div></div>
 287 </div><!-- fragment -->
 288 </div>
 289 </div>
 290 <a class="anchor" id="a2f57f54d8c03b615bb31eee091d8a88a"></a>
 291 <div class="memitem">
 292 <div class="memproto">
 293 <table class="mlabels">
 294   <tr>
 295   <td class="mlabels-left">
 296       <table class="memname">
 297         <tr>
 298           <td class="memname">bool is_open </td>
 299           <td>(</td>
 300           <td class="paramname"></td><td>)</td>
 301           <td></td>
 302         </tr>
 303       </table>
 304   </td>
 305   <td class="mlabels-right">
 306 <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
 307   </tr>
 308 </table>
 309 </div><div class="memdoc">
 310
 311 <p>Return true if a PPM file is currently open. </p>
 312
 313 <p>Definition at line <a class="el" href="utils_2_utils_8h_source.xhtml#l00114">114</a> of file <a class="el" href="utils_2_utils_8h_source.xhtml">Utils.h</a>.</p>
 314
 315 <p>Referenced by <a class="el" href="utils_2_utils_8h_source.xhtml#l00142">PPMLoader::fill_image()</a>, <a class="el" href="utils_2_utils_8h_source.xhtml#l00125">PPMLoader::init_image()</a>, <a class="el" href="cl__convolution_8cpp_source.xhtml#l00053">main_cl_convolution()</a>, <a class="el" href="cl__events_8cpp_source.xhtml#l00033">main_cl_events()</a>, <a class="el" href="neon__convolution_8cpp_source.xhtml#l00052">main_neon_convolution()</a>, <a class="el" href="neon__scale_8cpp_source.xhtml#l00032">main_neon_scale()</a>, <a class="el" href="neoncl__scale__median__gaussian_8cpp_source.xhtml#l00039">main_neoncl_scale_median_gaussian()</a>, and <a class="el" href="utils_2_utils_8h_source.xhtml#l00094">PPMLoader::open()</a>.</p>
 316 <div class="fragment"><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    {</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;        <span class="keywordflow">return</span> _fs.is_open();</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    }</div></div><!-- fragment -->
 317 </div>
 318 </div>
 319 <a class="anchor" id="a36e58f3e64f3851ebac7a9556b4704ed"></a>
 320 <div class="memitem">
 321 <div class="memproto">
 322 <table class="mlabels">
 323   <tr>
 324   <td class="mlabels-left">
 325       <table class="memname">
 326         <tr>
 327           <td class="memname">void open </td>
 328           <td>(</td>
 329           <td class="paramtype">const std::string &amp;&#160;</td>
 330           <td class="paramname"><em>ppm_filename</em></td><td>)</td>
 331           <td></td>
 332         </tr>
 333       </table>
 334   </td>
 335   <td class="mlabels-right">
 336 <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
 337   </tr>
 338 </table>
 339 </div><div class="memdoc">
 340
 341 <p>Open a PPM file and reads its metadata (Width, height) </p>
 342 <dl class="params"><dt>Parameters</dt><dd>
 343   <table class="params">
 344     <tr><td class="paramdir">[in]</td><td class="paramname">ppm_filename</td><td>File to open </td></tr>
 345   </table>
 346   </dd>
 347 </dl>
 348
 349 <p>Definition at line <a class="el" href="utils_2_utils_8h_source.xhtml#l00094">94</a> of file <a class="el" href="utils_2_utils_8h_source.xhtml">Utils.h</a>.</p>
 350
 351 <p>References <a class="el" href="_error_8h_source.xhtml#l00031">ARM_COMPUTE_ERROR</a>, <a class="el" href="_error_8h_source.xhtml#l00124">ARM_COMPUTE_ERROR_ON</a>, <a class="el" href="_error_8h_source.xhtml#l00115">ARM_COMPUTE_ERROR_ON_MSG</a>, <a class="el" href="utils_2_utils_8h_source.xhtml#l00114">PPMLoader::is_open()</a>, and <a class="el" href="utils_2_utils_8cpp_source.xhtml#l00140">arm_compute::utils::parse_ppm_header()</a>.</p>
 352
 353 <p>Referenced by <a class="el" href="cl__convolution_8cpp_source.xhtml#l00053">main_cl_convolution()</a>, <a class="el" href="cl__events_8cpp_source.xhtml#l00033">main_cl_events()</a>, <a class="el" href="neon__convolution_8cpp_source.xhtml#l00052">main_neon_convolution()</a>, <a class="el" href="neon__scale_8cpp_source.xhtml#l00032">main_neon_scale()</a>, and <a class="el" href="neoncl__scale__median__gaussian_8cpp_source.xhtml#l00039">main_neoncl_scale_median_gaussian()</a>.</p>
 354 <div class="fragment"><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    {</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;        <a class="code" href="_error_8h.xhtml#a54a6080c9f4df1f908e57a9bbb46f5da">ARM_COMPUTE_ERROR_ON</a>(<a class="code" href="classarm__compute_1_1utils_1_1_p_p_m_loader.xhtml#a2f57f54d8c03b615bb31eee091d8a88a">is_open</a>());</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;        <span class="keywordflow">try</span></div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;        {</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;            _fs.exceptions(std::ifstream::failbit | std::ifstream::badbit);</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;            _fs.open(ppm_filename, std::ios::in | std::ios::binary);</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;            <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> max_val = 0;</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;            std::tie(_width, _height, max_val) = <a class="code" href="namespacearm__compute_1_1utils.xhtml#a3aa8f5f1b94f88fdf5b43a53e29379cf">parse_ppm_header</a>(_fs);</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;            <a class="code" href="_error_8h.xhtml#a5bbdcf574d3f5e412fa6a1117911e67b">ARM_COMPUTE_ERROR_ON_MSG</a>(max_val &gt;= 256, <span class="stringliteral">&quot;2 bytes per colour channel not supported in file %s&quot;</span>, ppm_filename.c_str());</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;        }</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;        <span class="keywordflow">catch</span>(<span class="keyword">const</span> std::ifstream::failure &amp;e)</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;        {</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;            <a class="code" href="_error_8h.xhtml#a05b19c75afe9c24200a62b9724734bbd">ARM_COMPUTE_ERROR</a>(<span class="stringliteral">&quot;Accessing %s: %s&quot;</span>, ppm_filename.c_str(), e.what());</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;        }</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;    }</div><div class="ttc" id="_error_8h_xhtml_a05b19c75afe9c24200a62b9724734bbd"><div class="ttname"><a href="_error_8h.xhtml#a05b19c75afe9c24200a62b9724734bbd">ARM_COMPUTE_ERROR</a></div><div class="ttdeci">#define ARM_COMPUTE_ERROR(...)</div><div class="ttdoc">Print the given message then throw an std::runtime_error. </div><div class="ttdef"><b>Definition:</b> <a href="_error_8h_source.xhtml#l00031">Error.h:31</a></div></div>
 355 <div class="ttc" id="_error_8h_xhtml_a54a6080c9f4df1f908e57a9bbb46f5da"><div class="ttname"><a href="_error_8h.xhtml#a54a6080c9f4df1f908e57a9bbb46f5da">ARM_COMPUTE_ERROR_ON</a></div><div class="ttdeci">#define ARM_COMPUTE_ERROR_ON(cond)</div><div class="ttdoc">If the condition is true then an error message is printed and an exception thrown. </div><div class="ttdef"><b>Definition:</b> <a href="_error_8h_source.xhtml#l00124">Error.h:124</a></div></div>
 356 <div class="ttc" id="classarm__compute_1_1utils_1_1_p_p_m_loader_xhtml_a2f57f54d8c03b615bb31eee091d8a88a"><div class="ttname"><a href="classarm__compute_1_1utils_1_1_p_p_m_loader.xhtml#a2f57f54d8c03b615bb31eee091d8a88a">arm_compute::utils::PPMLoader::is_open</a></div><div class="ttdeci">bool is_open()</div><div class="ttdoc">Return true if a PPM file is currently open. </div><div class="ttdef"><b>Definition:</b> <a href="utils_2_utils_8h_source.xhtml#l00114">Utils.h:114</a></div></div>
 357 <div class="ttc" id="namespacearm__compute_1_1utils_xhtml_a3aa8f5f1b94f88fdf5b43a53e29379cf"><div class="ttname"><a href="namespacearm__compute_1_1utils.xhtml#a3aa8f5f1b94f88fdf5b43a53e29379cf">arm_compute::utils::parse_ppm_header</a></div><div class="ttdeci">std::tuple&lt; unsigned int, unsigned int, int &gt; parse_ppm_header(std::ifstream &amp;fs)</div><div class="ttdoc">Parse the ppm header from an input file stream. </div><div class="ttdef"><b>Definition:</b> <a href="utils_2_utils_8cpp_source.xhtml#l00140">Utils.cpp:140</a></div></div>
 358 <div class="ttc" id="_error_8h_xhtml_a5bbdcf574d3f5e412fa6a1117911e67b"><div class="ttname"><a href="_error_8h.xhtml#a5bbdcf574d3f5e412fa6a1117911e67b">ARM_COMPUTE_ERROR_ON_MSG</a></div><div class="ttdeci">#define ARM_COMPUTE_ERROR_ON_MSG(cond,...)</div><div class="ttdef"><b>Definition:</b> <a href="_error_8h_source.xhtml#l00115">Error.h:115</a></div></div>
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