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 113
 114 <div class="header">
 115   <div class="summary">
 116 <a href="#func-members">Functions</a>  </div>
 117   <div class="headertitle">
 118 <div class="title">absdiff.cl File Reference</div>  </div>
 119 </div><!--header-->
 120 <div class="contents">
 121 <div class="textblock"><code>#include &quot;<a class="el" href="helpers_8h_source.xhtml">helpers.h</a>&quot;</code><br />
 122 </div>
 123 <p><a href="absdiff_8cl_source.xhtml">Go to the source code of this file.</a></p>
 124 <table class="memberdecls">
 125 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
 126 Functions</h2></td></tr>
 127 <tr class="memitem:abd1c22f3b8c5d2d0a1de36f45c38b88f"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="absdiff_8cl.xhtml#abd1c22f3b8c5d2d0a1de36f45c38b88f">absdiff</a> (__global uchar *in1_ptr, uint in1_stride_x, uint in1_step_x, uint in1_stride_y, uint in1_step_y, uint in1_offset_first_element_in_bytes, __global uchar *in2_ptr, uint in2_stride_x, uint in2_step_x, uint in2_stride_y, uint in2_step_y, uint in2_offset_first_element_in_bytes, __global uchar *out_ptr, uint out_stride_x, uint out_step_x, uint out_stride_y, uint out_step_y, uint out_offset_first_element_in_bytes)</td></tr>
 128 <tr class="memdesc:abd1c22f3b8c5d2d0a1de36f45c38b88f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Calculate the absolute difference of two input images.  <a href="#abd1c22f3b8c5d2d0a1de36f45c38b88f">More...</a><br /></td></tr>
 129 <tr class="separator:abd1c22f3b8c5d2d0a1de36f45c38b88f"><td class="memSeparator" colspan="2">&#160;</td></tr>
 130 </table>
 131 <h2 class="groupheader">Function Documentation</h2>
 132 <a class="anchor" id="abd1c22f3b8c5d2d0a1de36f45c38b88f"></a>
 133 <div class="memitem">
 134 <div class="memproto">
 135       <table class="memname">
 136         <tr>
 137           <td class="memname">__kernel void absdiff </td>
 138           <td>(</td>
 139           <td class="paramtype">__global uchar *&#160;</td>
 140           <td class="paramname"><em>in1_ptr</em>, </td>
 141         </tr>
 142         <tr>
 143           <td class="paramkey"></td>
 144           <td></td>
 145           <td class="paramtype">uint&#160;</td>
 146           <td class="paramname"><em>in1_stride_x</em>, </td>
 147         </tr>
 148         <tr>
 149           <td class="paramkey"></td>
 150           <td></td>
 151           <td class="paramtype">uint&#160;</td>
 152           <td class="paramname"><em>in1_step_x</em>, </td>
 153         </tr>
 154         <tr>
 155           <td class="paramkey"></td>
 156           <td></td>
 157           <td class="paramtype">uint&#160;</td>
 158           <td class="paramname"><em>in1_stride_y</em>, </td>
 159         </tr>
 160         <tr>
 161           <td class="paramkey"></td>
 162           <td></td>
 163           <td class="paramtype">uint&#160;</td>
 164           <td class="paramname"><em>in1_step_y</em>, </td>
 165         </tr>
 166         <tr>
 167           <td class="paramkey"></td>
 168           <td></td>
 169           <td class="paramtype">uint&#160;</td>
 170           <td class="paramname"><em>in1_offset_first_element_in_bytes</em>, </td>
 171         </tr>
 172         <tr>
 173           <td class="paramkey"></td>
 174           <td></td>
 175           <td class="paramtype">__global uchar *&#160;</td>
 176           <td class="paramname"><em>in2_ptr</em>, </td>
 177         </tr>
 178         <tr>
 179           <td class="paramkey"></td>
 180           <td></td>
 181           <td class="paramtype">uint&#160;</td>
 182           <td class="paramname"><em>in2_stride_x</em>, </td>
 183         </tr>
 184         <tr>
 185           <td class="paramkey"></td>
 186           <td></td>
 187           <td class="paramtype">uint&#160;</td>
 188           <td class="paramname"><em>in2_step_x</em>, </td>
 189         </tr>
 190         <tr>
 191           <td class="paramkey"></td>
 192           <td></td>
 193           <td class="paramtype">uint&#160;</td>
 194           <td class="paramname"><em>in2_stride_y</em>, </td>
 195         </tr>
 196         <tr>
 197           <td class="paramkey"></td>
 198           <td></td>
 199           <td class="paramtype">uint&#160;</td>
 200           <td class="paramname"><em>in2_step_y</em>, </td>
 201         </tr>
 202         <tr>
 203           <td class="paramkey"></td>
 204           <td></td>
 205           <td class="paramtype">uint&#160;</td>
 206           <td class="paramname"><em>in2_offset_first_element_in_bytes</em>, </td>
 207         </tr>
 208         <tr>
 209           <td class="paramkey"></td>
 210           <td></td>
 211           <td class="paramtype">__global uchar *&#160;</td>
 212           <td class="paramname"><em>out_ptr</em>, </td>
 213         </tr>
 214         <tr>
 215           <td class="paramkey"></td>
 216           <td></td>
 217           <td class="paramtype">uint&#160;</td>
 218           <td class="paramname"><em>out_stride_x</em>, </td>
 219         </tr>
 220         <tr>
 221           <td class="paramkey"></td>
 222           <td></td>
 223           <td class="paramtype">uint&#160;</td>
 224           <td class="paramname"><em>out_step_x</em>, </td>
 225         </tr>
 226         <tr>
 227           <td class="paramkey"></td>
 228           <td></td>
 229           <td class="paramtype">uint&#160;</td>
 230           <td class="paramname"><em>out_stride_y</em>, </td>
 231         </tr>
 232         <tr>
 233           <td class="paramkey"></td>
 234           <td></td>
 235           <td class="paramtype">uint&#160;</td>
 236           <td class="paramname"><em>out_step_y</em>, </td>
 237         </tr>
 238         <tr>
 239           <td class="paramkey"></td>
 240           <td></td>
 241           <td class="paramtype">uint&#160;</td>
 242           <td class="paramname"><em>out_offset_first_element_in_bytes</em>&#160;</td>
 243         </tr>
 244         <tr>
 245           <td></td>
 246           <td>)</td>
 247           <td></td><td></td>
 248         </tr>
 249       </table>
 250 </div><div class="memdoc">
 251
 252 <p>Calculate the absolute difference of two input images. </p>
 253 <dl class="section attention"><dt>Attention</dt><dd>The input and output data types need to be passed at compile time using -DDATA_TYPE_IN1, -DDATA_TYPE_IN2 and -DDATA_TYPE_OUT:<br />
 254 e.g. -DDATA_TYPE_IN1=uchar -DDATA_TYPE_IN2=uchar -DDATA_TYPE_OUT=short</dd></dl>
 255 <dl class="params"><dt>Parameters</dt><dd>
 256   <table class="params">
 257     <tr><td class="paramdir">[in]</td><td class="paramname">in1_ptr</td><td>Pointer to the first source image. Supported data types: U8, S16 </td></tr>
 258     <tr><td class="paramdir">[in]</td><td class="paramname">in1_stride_x</td><td>Stride of the first source image in X dimension (in bytes) </td></tr>
 259     <tr><td class="paramdir">[in]</td><td class="paramname">in1_step_x</td><td>src_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
 260     <tr><td class="paramdir">[in]</td><td class="paramname">in1_stride_y</td><td>Stride of the first source image in Y dimension (in bytes) </td></tr>
 261     <tr><td class="paramdir">[in]</td><td class="paramname">in1_step_y</td><td>src_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
 262     <tr><td class="paramdir">[in]</td><td class="paramname">in1_offset_first_element_in_bytes</td><td>The offset of the first element in the first source image </td></tr>
 263     <tr><td class="paramdir">[in]</td><td class="paramname">in2_ptr</td><td>Pointer to the second source image. Supported data types: U8, S16 </td></tr>
 264     <tr><td class="paramdir">[in]</td><td class="paramname">in2_stride_x</td><td>Stride of the second source image in X dimension (in bytes) </td></tr>
 265     <tr><td class="paramdir">[in]</td><td class="paramname">in2_step_x</td><td>src_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
 266     <tr><td class="paramdir">[in]</td><td class="paramname">in2_stride_y</td><td>Stride of the second source image in Y dimension (in bytes) </td></tr>
 267     <tr><td class="paramdir">[in]</td><td class="paramname">in2_step_y</td><td>src_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
 268     <tr><td class="paramdir">[in]</td><td class="paramname">in2_offset_first_element_in_bytes</td><td>The offset of the first element in the second source image </td></tr>
 269     <tr><td class="paramdir">[out]</td><td class="paramname">out_ptr</td><td>Pointer to the destination image. Supported data types: U8, S16 </td></tr>
 270     <tr><td class="paramdir">[in]</td><td class="paramname">out_stride_x</td><td>Stride of the destination image in X dimension (in bytes) </td></tr>
 271     <tr><td class="paramdir">[in]</td><td class="paramname">out_step_x</td><td>dst_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
 272     <tr><td class="paramdir">[in]</td><td class="paramname">out_stride_y</td><td>Stride of the destination image in Y dimension (in bytes) </td></tr>
 273     <tr><td class="paramdir">[in]</td><td class="paramname">out_step_y</td><td>dst_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
 274     <tr><td class="paramdir">[in]</td><td class="paramname">out_offset_first_element_in_bytes</td><td>The offset of the first element in the destination image </td></tr>
 275   </table>
 276   </dd>
 277 </dl>
 278
 279 <p>Definition at line <a class="el" href="absdiff_8cl_source.xhtml#l00050">50</a> of file <a class="el" href="absdiff_8cl_source.xhtml">absdiff.cl</a>.</p>
 280
 281 <p>References <a class="el" href="helpers_8h_source.xhtml#l00035">CONVERT</a>, <a class="el" href="helpers_8h_source.xhtml#l00038">CONVERT_SAT</a>, <a class="el" href="helpers_8h_source.xhtml#l00073">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="convolution3x3_8cl_source.xhtml#l00031">DATA_TYPE_OUT</a>, <a class="el" href="helpers_8h_source.xhtml#l00097">Image::ptr</a>, and <a class="el" href="helpers_8h_source.xhtml#l00032">VEC_DATA_TYPE</a>.</p>
 282 <div class="fragment"><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;{</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> in1 = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(in1);</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> in2 = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(in2);</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> out = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(out);</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    <a class="code" href="helpers_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#ac06f3e24d3fffd3c465d8b2a6e7c985e">DATA_TYPE_OUT</a>, 16)</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    in_a = <a class="code" href="helpers_8h.xhtml#aa8d95ba04fc73845abc6045952cae5be">CONVERT</a>(vload16(0, (__global DATA_TYPE_IN1 *)in1.ptr), <a class="code" href="helpers_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#ac06f3e24d3fffd3c465d8b2a6e7c985e">DATA_TYPE_OUT</a>, 16));</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    <a class="code" href="helpers_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(DATA_TYPE_OUT, 16)</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    in_b = <a class="code" href="helpers_8h.xhtml#aa8d95ba04fc73845abc6045952cae5be">CONVERT</a>(vload16(0, (__global DATA_TYPE_IN2 *)in2.ptr), <a class="code" href="helpers_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(DATA_TYPE_OUT, 16));</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    vstore16(<a class="code" href="helpers_8h.xhtml#a23fb01b6f3453cc0e48a026fd44f6acd">CONVERT_SAT</a>(abs_diff(in_a, in_b), <a class="code" href="helpers_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(DATA_TYPE_OUT, 16)), 0, (__global DATA_TYPE_OUT *)out.ptr);</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;}</div><div class="ttc" id="helpers_8h_xhtml_aebe814363556c244be043b13e7969197"><div class="ttname"><a href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a></div><div class="ttdeci">#define CONVERT_TO_IMAGE_STRUCT(name)</div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00073">helpers.h:73</a></div></div>
 283 <div class="ttc" id="helpers_8h_xhtml_a36f754c05b6fddf6df0d8d0a74f8159f"><div class="ttname"><a href="helpers_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a></div><div class="ttdeci">#define VEC_DATA_TYPE(type, size)</div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00032">helpers.h:32</a></div></div>
 284 <div class="ttc" id="struct_image_xhtml"><div class="ttname"><a href="struct_image.xhtml">Image</a></div><div class="ttdoc">Structure to hold Image information. </div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00095">helpers.h:95</a></div></div>
 285 <div class="ttc" id="helpers_8h_xhtml_a23fb01b6f3453cc0e48a026fd44f6acd"><div class="ttname"><a href="helpers_8h.xhtml#a23fb01b6f3453cc0e48a026fd44f6acd">CONVERT_SAT</a></div><div class="ttdeci">#define CONVERT_SAT(x, type)</div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00038">helpers.h:38</a></div></div>
 286 <div class="ttc" id="convolution3x3_8cl_xhtml_ac06f3e24d3fffd3c465d8b2a6e7c985e"><div class="ttname"><a href="convolution3x3_8cl.xhtml#ac06f3e24d3fffd3c465d8b2a6e7c985e">DATA_TYPE_OUT</a></div><div class="ttdeci">#define DATA_TYPE_OUT</div><div class="ttdef"><b>Definition:</b> <a href="convolution3x3_8cl_source.xhtml#l00031">convolution3x3.cl:31</a></div></div>
 287 <div class="ttc" id="helpers_8h_xhtml_aa8d95ba04fc73845abc6045952cae5be"><div class="ttname"><a href="helpers_8h.xhtml#aa8d95ba04fc73845abc6045952cae5be">CONVERT</a></div><div class="ttdeci">#define CONVERT(x, type)</div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00035">helpers.h:35</a></div></div>
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