documentation/pooling__layer_8cl.xhtml

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 113
 114 <div class="header">
 115   <div class="summary">
 116 <a href="#define-members">Macros</a> &#124;
 117 <a href="#func-members">Functions</a>  </div>
 118   <div class="headertitle">
 119 <div class="title">pooling_layer.cl File Reference</div>  </div>
 120 </div><!--header-->
 121 <div class="contents">
 122 <div class="textblock"><code>#include &quot;<a class="el" href="helpers_8h_source.xhtml">helpers.h</a>&quot;</code><br />
 123 </div>
 124 <p><a href="pooling__layer_8cl_source.xhtml">Go to the source code of this file.</a></p>
 125 <table class="memberdecls">
 126 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
 127 Macros</h2></td></tr>
 128 <tr class="memitem:a482ef7d59a5f474ca126e737c7f0978a"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="pooling__layer_8cl.xhtml#a482ef7d59a5f474ca126e737c7f0978a">POOL_OP</a>(x,  y)&#160;&#160;&#160;((x) + (y))</td></tr>
 129 <tr class="separator:a482ef7d59a5f474ca126e737c7f0978a"><td class="memSeparator" colspan="2">&#160;</td></tr>
 130 </table><table class="memberdecls">
 131 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
 132 Functions</h2></td></tr>
 133 <tr class="memitem:a60440813daa769d486c5786d52b91340"><td class="memItemLeft" align="right" valign="top">float&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="pooling__layer_8cl.xhtml#a60440813daa769d486c5786d52b91340">calculate_avg_scale</a> (const int pool_size, const int upper_bound_w, const int upper_bound_h, const int pad_x, const int pad_y, const int stride_x, const int stride_y)</td></tr>
 134 <tr class="separator:a60440813daa769d486c5786d52b91340"><td class="memSeparator" colspan="2">&#160;</td></tr>
 135 <tr class="memitem:ac5df4051328f567787660fd319694842"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="pooling__layer_8cl.xhtml#ac5df4051328f567787660fd319694842">pooling_layer_2</a> (__global uchar *input_ptr, uint input_stride_x, uint input_step_x, uint input_stride_y, uint input_step_y, uint input_offset_first_element_in_bytes, __global uchar *output_ptr, uint output_stride_x, uint output_step_x, uint output_stride_y, uint output_step_y, uint output_offset_first_element_in_bytes, int2 max_dims, int2 strides, int2 paddings)</td></tr>
 136 <tr class="memdesc:ac5df4051328f567787660fd319694842"><td class="mdescLeft">&#160;</td><td class="mdescRight">Performs a pooling function of pool size equal to 2.  <a href="#ac5df4051328f567787660fd319694842">More...</a><br /></td></tr>
 137 <tr class="separator:ac5df4051328f567787660fd319694842"><td class="memSeparator" colspan="2">&#160;</td></tr>
 138 <tr class="memitem:a0c8f47e252a2f3e9d9f2ba3bf197846b"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="pooling__layer_8cl.xhtml#a0c8f47e252a2f3e9d9f2ba3bf197846b">pooling_layer_3</a> (__global uchar *input_ptr, uint input_stride_x, uint input_step_x, uint input_stride_y, uint input_step_y, uint input_offset_first_element_in_bytes, __global uchar *output_ptr, uint output_stride_x, uint output_step_x, uint output_stride_y, uint output_step_y, uint output_offset_first_element_in_bytes, int2 max_dims, int2 strides, int2 paddings)</td></tr>
 139 <tr class="memdesc:a0c8f47e252a2f3e9d9f2ba3bf197846b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Performs a pooling function of pool size equal to 3.  <a href="#a0c8f47e252a2f3e9d9f2ba3bf197846b">More...</a><br /></td></tr>
 140 <tr class="separator:a0c8f47e252a2f3e9d9f2ba3bf197846b"><td class="memSeparator" colspan="2">&#160;</td></tr>
 141 </table>
 142 <h2 class="groupheader">Macro Definition Documentation</h2>
 143 <a class="anchor" id="a482ef7d59a5f474ca126e737c7f0978a"></a>
 144 <div class="memitem">
 145 <div class="memproto">
 146       <table class="memname">
 147         <tr>
 148           <td class="memname">#define POOL_OP</td>
 149           <td>(</td>
 150           <td class="paramtype">&#160;</td>
 151           <td class="paramname">x, </td>
 152         </tr>
 153         <tr>
 154           <td class="paramkey"></td>
 155           <td></td>
 156           <td class="paramtype">&#160;</td>
 157           <td class="paramname">y&#160;</td>
 158         </tr>
 159         <tr>
 160           <td></td>
 161           <td>)</td>
 162           <td></td><td>&#160;&#160;&#160;((x) + (y))</td>
 163         </tr>
 164       </table>
 165 </div><div class="memdoc">
 166
 167 <p>Definition at line <a class="el" href="pooling__layer_8cl_source.xhtml#l00027">27</a> of file <a class="el" href="pooling__layer_8cl_source.xhtml">pooling_layer.cl</a>.</p>
 168
 169 <p>Referenced by <a class="el" href="pooling__layer_8cl_source.xhtml#l00064">pooling_layer_2()</a>, and <a class="el" href="pooling__layer_8cl_source.xhtml#l00118">pooling_layer_3()</a>.</p>
 170
 171 </div>
 172 </div>
 173 <h2 class="groupheader">Function Documentation</h2>
 174 <a class="anchor" id="a60440813daa769d486c5786d52b91340"></a>
 175 <div class="memitem">
 176 <div class="memproto">
 177       <table class="memname">
 178         <tr>
 179           <td class="memname">float calculate_avg_scale </td>
 180           <td>(</td>
 181           <td class="paramtype">const int&#160;</td>
 182           <td class="paramname"><em>pool_size</em>, </td>
 183         </tr>
 184         <tr>
 185           <td class="paramkey"></td>
 186           <td></td>
 187           <td class="paramtype">const int&#160;</td>
 188           <td class="paramname"><em>upper_bound_w</em>, </td>
 189         </tr>
 190         <tr>
 191           <td class="paramkey"></td>
 192           <td></td>
 193           <td class="paramtype">const int&#160;</td>
 194           <td class="paramname"><em>upper_bound_h</em>, </td>
 195         </tr>
 196         <tr>
 197           <td class="paramkey"></td>
 198           <td></td>
 199           <td class="paramtype">const int&#160;</td>
 200           <td class="paramname"><em>pad_x</em>, </td>
 201         </tr>
 202         <tr>
 203           <td class="paramkey"></td>
 204           <td></td>
 205           <td class="paramtype">const int&#160;</td>
 206           <td class="paramname"><em>pad_y</em>, </td>
 207         </tr>
 208         <tr>
 209           <td class="paramkey"></td>
 210           <td></td>
 211           <td class="paramtype">const int&#160;</td>
 212           <td class="paramname"><em>stride_x</em>, </td>
 213         </tr>
 214         <tr>
 215           <td class="paramkey"></td>
 216           <td></td>
 217           <td class="paramtype">const int&#160;</td>
 218           <td class="paramname"><em>stride_y</em>&#160;</td>
 219         </tr>
 220         <tr>
 221           <td></td>
 222           <td>)</td>
 223           <td></td><td></td>
 224         </tr>
 225       </table>
 226 </div><div class="memdoc">
 227
 228 <p>Definition at line <a class="el" href="pooling__layer_8cl_source.xhtml#l00032">32</a> of file <a class="el" href="pooling__layer_8cl_source.xhtml">pooling_layer.cl</a>.</p>
 229
 230 <p>Referenced by <a class="el" href="pooling__layer_8cl_source.xhtml#l00064">pooling_layer_2()</a>, and <a class="el" href="pooling__layer_8cl_source.xhtml#l00118">pooling_layer_3()</a>.</p>
 231 <div class="fragment"><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;{</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    <span class="keywordtype">int</span> start_x = get_global_id(0) * stride_x - pad_x;</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    <span class="keywordtype">int</span> start_y = get_global_id(1) * stride_y - pad_y;</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    <span class="keywordtype">int</span> end_x   = min(start_x + pool_size, upper_bound_w);</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    <span class="keywordtype">int</span> end_y   = min(start_y + pool_size, upper_bound_h);</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    <span class="keywordflow">return</span> 1.f / ((end_y - start_y) * (end_x - start_x));</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;}</div></div><!-- fragment -->
 232 </div>
 233 </div>
 234 <a class="anchor" id="ac5df4051328f567787660fd319694842"></a>
 235 <div class="memitem">
 236 <div class="memproto">
 237       <table class="memname">
 238         <tr>
 239           <td class="memname">__kernel void pooling_layer_2 </td>
 240           <td>(</td>
 241           <td class="paramtype">__global uchar *&#160;</td>
 242           <td class="paramname"><em>input_ptr</em>, </td>
 243         </tr>
 244         <tr>
 245           <td class="paramkey"></td>
 246           <td></td>
 247           <td class="paramtype">uint&#160;</td>
 248           <td class="paramname"><em>input_stride_x</em>, </td>
 249         </tr>
 250         <tr>
 251           <td class="paramkey"></td>
 252           <td></td>
 253           <td class="paramtype">uint&#160;</td>
 254           <td class="paramname"><em>input_step_x</em>, </td>
 255         </tr>
 256         <tr>
 257           <td class="paramkey"></td>
 258           <td></td>
 259           <td class="paramtype">uint&#160;</td>
 260           <td class="paramname"><em>input_stride_y</em>, </td>
 261         </tr>
 262         <tr>
 263           <td class="paramkey"></td>
 264           <td></td>
 265           <td class="paramtype">uint&#160;</td>
 266           <td class="paramname"><em>input_step_y</em>, </td>
 267         </tr>
 268         <tr>
 269           <td class="paramkey"></td>
 270           <td></td>
 271           <td class="paramtype">uint&#160;</td>
 272           <td class="paramname"><em>input_offset_first_element_in_bytes</em>, </td>
 273         </tr>
 274         <tr>
 275           <td class="paramkey"></td>
 276           <td></td>
 277           <td class="paramtype">__global uchar *&#160;</td>
 278           <td class="paramname"><em>output_ptr</em>, </td>
 279         </tr>
 280         <tr>
 281           <td class="paramkey"></td>
 282           <td></td>
 283           <td class="paramtype">uint&#160;</td>
 284           <td class="paramname"><em>output_stride_x</em>, </td>
 285         </tr>
 286         <tr>
 287           <td class="paramkey"></td>
 288           <td></td>
 289           <td class="paramtype">uint&#160;</td>
 290           <td class="paramname"><em>output_step_x</em>, </td>
 291         </tr>
 292         <tr>
 293           <td class="paramkey"></td>
 294           <td></td>
 295           <td class="paramtype">uint&#160;</td>
 296           <td class="paramname"><em>output_stride_y</em>, </td>
 297         </tr>
 298         <tr>
 299           <td class="paramkey"></td>
 300           <td></td>
 301           <td class="paramtype">uint&#160;</td>
 302           <td class="paramname"><em>output_step_y</em>, </td>
 303         </tr>
 304         <tr>
 305           <td class="paramkey"></td>
 306           <td></td>
 307           <td class="paramtype">uint&#160;</td>
 308           <td class="paramname"><em>output_offset_first_element_in_bytes</em>, </td>
 309         </tr>
 310         <tr>
 311           <td class="paramkey"></td>
 312           <td></td>
 313           <td class="paramtype">int2&#160;</td>
 314           <td class="paramname"><em>max_dims</em>, </td>
 315         </tr>
 316         <tr>
 317           <td class="paramkey"></td>
 318           <td></td>
 319           <td class="paramtype">int2&#160;</td>
 320           <td class="paramname"><em>strides</em>, </td>
 321         </tr>
 322         <tr>
 323           <td class="paramkey"></td>
 324           <td></td>
 325           <td class="paramtype">int2&#160;</td>
 326           <td class="paramname"><em>paddings</em>&#160;</td>
 327         </tr>
 328         <tr>
 329           <td></td>
 330           <td>)</td>
 331           <td></td><td></td>
 332         </tr>
 333       </table>
 334 </div><div class="memdoc">
 335
 336 <p>Performs a pooling function of pool size equal to 2. </p>
 337 <dl class="section note"><dt>Note</dt><dd>Pooling stride must be passed using -DPOOL_STRIDE e.g -DPOOL_STRIDE=2. Supported strides are 1,2,3 </dd>
 338 <dd>
 339 Datatype must be passed using -DDATA_TYPE e.g. -DDATA_TYPE=float. Supported data types are F16, F32; </dd>
 340 <dd>
 341 In case of average pooling -DPOOL_AVG must be provided otherwise max pooling will be performed.</dd></dl>
 342 <dl class="params"><dt>Parameters</dt><dd>
 343   <table class="params">
 344     <tr><td class="paramdir">[in]</td><td class="paramname">input_ptr</td><td>Pointer to the source image. Supported data types: F16, F32 </td></tr>
 345     <tr><td class="paramdir">[in]</td><td class="paramname">input_stride_x</td><td>Stride of the source image in X dimension (in bytes) </td></tr>
 346     <tr><td class="paramdir">[in]</td><td class="paramname">input_step_x</td><td>input_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
 347     <tr><td class="paramdir">[in]</td><td class="paramname">input_stride_y</td><td>Stride of the source image in Y dimension (in bytes) </td></tr>
 348     <tr><td class="paramdir">[in]</td><td class="paramname">input_step_y</td><td>input_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
 349     <tr><td class="paramdir">[in]</td><td class="paramname">input_offset_first_element_in_bytes</td><td>The offset of the first element in the source image </td></tr>
 350     <tr><td class="paramdir">[out]</td><td class="paramname">output_ptr</td><td>Pointer to the destination image. Supported data types: F16, F32 </td></tr>
 351     <tr><td class="paramdir">[in]</td><td class="paramname">output_stride_x</td><td>Stride of the destination image in X dimension (in bytes) </td></tr>
 352     <tr><td class="paramdir">[in]</td><td class="paramname">output_step_x</td><td>output_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
 353     <tr><td class="paramdir">[in]</td><td class="paramname">output_stride_y</td><td>Stride of the destination image in Y dimension (in bytes) </td></tr>
 354     <tr><td class="paramdir">[in]</td><td class="paramname">output_step_y</td><td>output_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
 355     <tr><td class="paramdir">[in]</td><td class="paramname">output_offset_first_element_in_bytes</td><td>The offset of the first element in the destination image </td></tr>
 356     <tr><td class="paramdir">[in]</td><td class="paramname">max_dims</td><td>The maximum index that can be accessed in x and y dimension (width + pad) </td></tr>
 357     <tr><td class="paramdir">[in]</td><td class="paramname">strides</td><td>The pooling operation strides in each dimension </td></tr>
 358     <tr><td class="paramdir">[in]</td><td class="paramname">paddings</td><td>The pooling operation paddings in each dimension </td></tr>
 359   </table>
 360   </dd>
 361 </dl>
 362
 363 <p>Definition at line <a class="el" href="pooling__layer_8cl_source.xhtml#l00064">64</a> of file <a class="el" href="pooling__layer_8cl_source.xhtml">pooling_layer.cl</a>.</p>
 364
 365 <p>References <a class="el" href="pooling__layer_8cl_source.xhtml#l00032">calculate_avg_scale()</a>, <a class="el" href="helpers_8h_source.xhtml#l00073">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="convolution3x3_8cl_source.xhtml#l00027">DATA_TYPE</a>, <a class="el" href="helpers_8h_source.xhtml#l00201">offset()</a>, <a class="el" href="pooling__layer_8cl_source.xhtml#l00027">POOL_OP</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>
 366 <div class="fragment"><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;{</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    <span class="comment">// Get pixels pointer</span></div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> input  = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(input);</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> output = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(output);</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;    <span class="comment">// Load data</span></div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    <a class="code" href="helpers_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a>, 2)</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    data0 = vload2(0, (__global <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&amp;input, 0, 0));</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    <a class="code" href="helpers_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a>, 2)</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;    data1 = vload2(0, (__global DATA_TYPE *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&amp;input, 0, 1));</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    <span class="comment">// Perform calculations</span></div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    data0         = <a class="code" href="pooling__layer_8cl.xhtml#a482ef7d59a5f474ca126e737c7f0978a">POOL_OP</a>(data0, data1);</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    DATA_TYPE res = <a class="code" href="pooling__layer_8cl.xhtml#a482ef7d59a5f474ca126e737c7f0978a">POOL_OP</a>(data0.s0, data0.s1);</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;    <span class="comment">// Divide by 4 in case of average pooling</span></div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="preprocessor">#ifdef POOL_AVG</span></div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    res *= <a class="code" href="pooling__layer_8cl.xhtml#a60440813daa769d486c5786d52b91340">calculate_avg_scale</a>(2, max_dims.x, max_dims.y, paddings.x, paddings.y, strides.x, strides.y);</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    <span class="comment">// Store result</span></div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;    *(__global DATA_TYPE *)output.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a> = res;</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;}</div><div class="ttc" id="pooling__layer_8cl_xhtml_a482ef7d59a5f474ca126e737c7f0978a"><div class="ttname"><a href="pooling__layer_8cl.xhtml#a482ef7d59a5f474ca126e737c7f0978a">POOL_OP</a></div><div class="ttdeci">#define POOL_OP(x, y)</div><div class="ttdef"><b>Definition:</b> <a href="pooling__layer_8cl_source.xhtml#l00027">pooling_layer.cl:27</a></div></div>
 367 <div class="ttc" id="convolution3x3_8cl_xhtml_afb8c72ce35c4a1f4a2588d6573e54aa1"><div class="ttname"><a href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a></div><div class="ttdeci">#define DATA_TYPE</div><div class="ttdef"><b>Definition:</b> <a href="convolution3x3_8cl_source.xhtml#l00027">convolution3x3.cl:27</a></div></div>
 368 <div class="ttc" id="pooling__layer_8cl_xhtml_a60440813daa769d486c5786d52b91340"><div class="ttname"><a href="pooling__layer_8cl.xhtml#a60440813daa769d486c5786d52b91340">calculate_avg_scale</a></div><div class="ttdeci">float calculate_avg_scale(const int pool_size, const int upper_bound_w, const int upper_bound_h, const int pad_x, const int pad_y, const int stride_x, const int stride_y)</div><div class="ttdef"><b>Definition:</b> <a href="pooling__layer_8cl_source.xhtml#l00032">pooling_layer.cl:32</a></div></div>
 369 <div class="ttc" id="helpers_8h_xhtml_a009469e4d9b8fce3b6d5e97d2077827d"><div class="ttname"><a href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a></div><div class="ttdeci">__global uchar * offset(const Image *img, int x, int y)</div><div class="ttdoc">Get the pointer position of a Image. </div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00201">helpers.h:201</a></div></div>
 370 <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>
 371 <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>
 372 <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>
 373 <div class="ttc" id="struct_image_xhtml_acf52c23cbd7424606c10a606524e3e32"><div class="ttname"><a href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">Image::ptr</a></div><div class="ttdeci">__global uchar * ptr</div><div class="ttdoc">Pointer to the starting postion of the buffer. </div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00097">helpers.h:97</a></div></div>
 374 </div><!-- fragment -->
 375 </div>
 376 </div>
 377 <a class="anchor" id="a0c8f47e252a2f3e9d9f2ba3bf197846b"></a>
 378 <div class="memitem">
 379 <div class="memproto">
 380       <table class="memname">
 381         <tr>
 382           <td class="memname">__kernel void pooling_layer_3 </td>
 383           <td>(</td>
 384           <td class="paramtype">__global uchar *&#160;</td>
 385           <td class="paramname"><em>input_ptr</em>, </td>
 386         </tr>
 387         <tr>
 388           <td class="paramkey"></td>
 389           <td></td>
 390           <td class="paramtype">uint&#160;</td>
 391           <td class="paramname"><em>input_stride_x</em>, </td>
 392         </tr>
 393         <tr>
 394           <td class="paramkey"></td>
 395           <td></td>
 396           <td class="paramtype">uint&#160;</td>
 397           <td class="paramname"><em>input_step_x</em>, </td>
 398         </tr>
 399         <tr>
 400           <td class="paramkey"></td>
 401           <td></td>
 402           <td class="paramtype">uint&#160;</td>
 403           <td class="paramname"><em>input_stride_y</em>, </td>
 404         </tr>
 405         <tr>
 406           <td class="paramkey"></td>
 407           <td></td>
 408           <td class="paramtype">uint&#160;</td>
 409           <td class="paramname"><em>input_step_y</em>, </td>
 410         </tr>
 411         <tr>
 412           <td class="paramkey"></td>
 413           <td></td>
 414           <td class="paramtype">uint&#160;</td>
 415           <td class="paramname"><em>input_offset_first_element_in_bytes</em>, </td>
 416         </tr>
 417         <tr>
 418           <td class="paramkey"></td>
 419           <td></td>
 420           <td class="paramtype">__global uchar *&#160;</td>
 421           <td class="paramname"><em>output_ptr</em>, </td>
 422         </tr>
 423         <tr>
 424           <td class="paramkey"></td>
 425           <td></td>
 426           <td class="paramtype">uint&#160;</td>
 427           <td class="paramname"><em>output_stride_x</em>, </td>
 428         </tr>
 429         <tr>
 430           <td class="paramkey"></td>
 431           <td></td>
 432           <td class="paramtype">uint&#160;</td>
 433           <td class="paramname"><em>output_step_x</em>, </td>
 434         </tr>
 435         <tr>
 436           <td class="paramkey"></td>
 437           <td></td>
 438           <td class="paramtype">uint&#160;</td>
 439           <td class="paramname"><em>output_stride_y</em>, </td>
 440         </tr>
 441         <tr>
 442           <td class="paramkey"></td>
 443           <td></td>
 444           <td class="paramtype">uint&#160;</td>
 445           <td class="paramname"><em>output_step_y</em>, </td>
 446         </tr>
 447         <tr>
 448           <td class="paramkey"></td>
 449           <td></td>
 450           <td class="paramtype">uint&#160;</td>
 451           <td class="paramname"><em>output_offset_first_element_in_bytes</em>, </td>
 452         </tr>
 453         <tr>
 454           <td class="paramkey"></td>
 455           <td></td>
 456           <td class="paramtype">int2&#160;</td>
 457           <td class="paramname"><em>max_dims</em>, </td>
 458         </tr>
 459         <tr>
 460           <td class="paramkey"></td>
 461           <td></td>
 462           <td class="paramtype">int2&#160;</td>
 463           <td class="paramname"><em>strides</em>, </td>
 464         </tr>
 465         <tr>
 466           <td class="paramkey"></td>
 467           <td></td>
 468           <td class="paramtype">int2&#160;</td>
 469           <td class="paramname"><em>paddings</em>&#160;</td>
 470         </tr>
 471         <tr>
 472           <td></td>
 473           <td>)</td>
 474           <td></td><td></td>
 475         </tr>
 476       </table>
 477 </div><div class="memdoc">
 478
 479 <p>Performs a pooling function of pool size equal to 3. </p>
 480 <dl class="section note"><dt>Note</dt><dd>Pooling stride must be passed using -DPOOL_STRIDE e.g -DPOOL_STRIDE=2. Supported strides are 1,2,3 </dd>
 481 <dd>
 482 Datatype must be passed using -DDATA_TYPE e.g. -DDATA_TYPE=float. Supported data types are F16, F32; </dd>
 483 <dd>
 484 In case of average pooling -DPOOL_AVG must be provided otherwise max pooling will be performed.</dd></dl>
 485 <dl class="params"><dt>Parameters</dt><dd>
 486   <table class="params">
 487     <tr><td class="paramdir">[in]</td><td class="paramname">input_ptr</td><td>Pointer to the source image. Supported data types: F16, F32 </td></tr>
 488     <tr><td class="paramdir">[in]</td><td class="paramname">input_stride_x</td><td>Stride of the source image in X dimension (in bytes) </td></tr>
 489     <tr><td class="paramdir">[in]</td><td class="paramname">input_step_x</td><td>input_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
 490     <tr><td class="paramdir">[in]</td><td class="paramname">input_stride_y</td><td>Stride of the source image in Y dimension (in bytes) </td></tr>
 491     <tr><td class="paramdir">[in]</td><td class="paramname">input_step_y</td><td>input_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
 492     <tr><td class="paramdir">[in]</td><td class="paramname">input_offset_first_element_in_bytes</td><td>The offset of the first element in the source image </td></tr>
 493     <tr><td class="paramdir">[out]</td><td class="paramname">output_ptr</td><td>Pointer to the destination image. Supported data types: F16, F32 </td></tr>
 494     <tr><td class="paramdir">[in]</td><td class="paramname">output_stride_x</td><td>Stride of the destination image in X dimension (in bytes) </td></tr>
 495     <tr><td class="paramdir">[in]</td><td class="paramname">output_step_x</td><td>output_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
 496     <tr><td class="paramdir">[in]</td><td class="paramname">output_stride_y</td><td>Stride of the destination image in Y dimension (in bytes) </td></tr>
 497     <tr><td class="paramdir">[in]</td><td class="paramname">output_step_y</td><td>output_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
 498     <tr><td class="paramdir">[in]</td><td class="paramname">output_offset_first_element_in_bytes</td><td>The offset of the first element in the destination image </td></tr>
 499     <tr><td class="paramdir">[in]</td><td class="paramname">max_dims</td><td>The maximum index that can be accessed in x and y dimension (width + pad) </td></tr>
 500     <tr><td class="paramdir">[in]</td><td class="paramname">strides</td><td>The pooling operation strides in each dimension </td></tr>
 501     <tr><td class="paramdir">[in]</td><td class="paramname">paddings</td><td>The pooling operation paddings in each dimension </td></tr>
 502   </table>
 503   </dd>
 504 </dl>
 505
 506 <p>Definition at line <a class="el" href="pooling__layer_8cl_source.xhtml#l00118">118</a> of file <a class="el" href="pooling__layer_8cl_source.xhtml">pooling_layer.cl</a>.</p>
 507
 508 <p>References <a class="el" href="pooling__layer_8cl_source.xhtml#l00032">calculate_avg_scale()</a>, <a class="el" href="helpers_8h_source.xhtml#l00073">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="convolution3x3_8cl_source.xhtml#l00027">DATA_TYPE</a>, <a class="el" href="helpers_8h_source.xhtml#l00201">offset()</a>, <a class="el" href="pooling__layer_8cl_source.xhtml#l00027">POOL_OP</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>
 509 <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;    <span class="comment">// Get pixels pointer</span></div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> input  = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(input);</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> output = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(output);</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    <span class="comment">// Load data</span></div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    <a class="code" href="helpers_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a>, 3)</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;    data0 = vload3(0, (__global <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&amp;input, 0, 0));</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;    <a class="code" href="helpers_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a>, 3)</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    data1 = vload3(0, (__global DATA_TYPE *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&amp;input, 0, 1));</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    <a class="code" href="helpers_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(DATA_TYPE, 3)</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;    data2 = vload3(0, (__global DATA_TYPE *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&amp;input, 0, 2));</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    <span class="comment">// Perform calculations</span></div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;    data0         = <a class="code" href="pooling__layer_8cl.xhtml#a482ef7d59a5f474ca126e737c7f0978a">POOL_OP</a>(data0, data1);</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;    data0         = <a class="code" href="pooling__layer_8cl.xhtml#a482ef7d59a5f474ca126e737c7f0978a">POOL_OP</a>(data0, data2);</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;    DATA_TYPE res = <a class="code" href="pooling__layer_8cl.xhtml#a482ef7d59a5f474ca126e737c7f0978a">POOL_OP</a>(<a class="code" href="pooling__layer_8cl.xhtml#a482ef7d59a5f474ca126e737c7f0978a">POOL_OP</a>(data0.s0, data0.s1), data0.s2);</div><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;    <span class="comment">// Divide by 4 in case of average pooling</span></div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;<span class="preprocessor">#ifdef POOL_AVG</span></div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;    res *= <a class="code" href="pooling__layer_8cl.xhtml#a60440813daa769d486c5786d52b91340">calculate_avg_scale</a>(3, max_dims.x, max_dims.y, paddings.x, paddings.y, strides.x, strides.y);</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;<span class="preprocessor">#endif</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="comment">// Store result</span></div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;    *(__global DATA_TYPE *)output.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a> = res;</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;}</div><div class="ttc" id="pooling__layer_8cl_xhtml_a482ef7d59a5f474ca126e737c7f0978a"><div class="ttname"><a href="pooling__layer_8cl.xhtml#a482ef7d59a5f474ca126e737c7f0978a">POOL_OP</a></div><div class="ttdeci">#define POOL_OP(x, y)</div><div class="ttdef"><b>Definition:</b> <a href="pooling__layer_8cl_source.xhtml#l00027">pooling_layer.cl:27</a></div></div>
 510 <div class="ttc" id="convolution3x3_8cl_xhtml_afb8c72ce35c4a1f4a2588d6573e54aa1"><div class="ttname"><a href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a></div><div class="ttdeci">#define DATA_TYPE</div><div class="ttdef"><b>Definition:</b> <a href="convolution3x3_8cl_source.xhtml#l00027">convolution3x3.cl:27</a></div></div>
 511 <div class="ttc" id="pooling__layer_8cl_xhtml_a60440813daa769d486c5786d52b91340"><div class="ttname"><a href="pooling__layer_8cl.xhtml#a60440813daa769d486c5786d52b91340">calculate_avg_scale</a></div><div class="ttdeci">float calculate_avg_scale(const int pool_size, const int upper_bound_w, const int upper_bound_h, const int pad_x, const int pad_y, const int stride_x, const int stride_y)</div><div class="ttdef"><b>Definition:</b> <a href="pooling__layer_8cl_source.xhtml#l00032">pooling_layer.cl:32</a></div></div>
 512 <div class="ttc" id="helpers_8h_xhtml_a009469e4d9b8fce3b6d5e97d2077827d"><div class="ttname"><a href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a></div><div class="ttdeci">__global uchar * offset(const Image *img, int x, int y)</div><div class="ttdoc">Get the pointer position of a Image. </div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00201">helpers.h:201</a></div></div>
 513 <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>
 514 <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>
 515 <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>
 516 <div class="ttc" id="struct_image_xhtml_acf52c23cbd7424606c10a606524e3e32"><div class="ttname"><a href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">Image::ptr</a></div><div class="ttdeci">__global uchar * ptr</div><div class="ttdoc">Pointer to the starting postion of the buffer. </div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00097">helpers.h:97</a></div></div>
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