documentation/minmaxloc_8cl.xhtml

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 114 <div class="header">
 115   <div class="summary">
 116 <a href="#define-members">Macros</a> &#124;
 117 <a href="#func-members">Functions</a> &#124;
 118 <a href="#var-members">Variables</a>  </div>
 119   <div class="headertitle">
 120 <div class="title">minmaxloc.cl File Reference</div>  </div>
 121 </div><!--header-->
 122 <div class="contents">
 123 <div class="textblock"><code>#include &quot;<a class="el" href="helpers_8h_source.xhtml">helpers.h</a>&quot;</code><br />
 124 <code>#include &quot;<a class="el" href="types_8h_source.xhtml">types.h</a>&quot;</code><br />
 125 </div>
 126 <p><a href="minmaxloc_8cl_source.xhtml">Go to the source code of this file.</a></p>
 127 <table class="memberdecls">
 128 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
 129 Macros</h2></td></tr>
 130 <tr class="memitem:a17decce255d6f94a60379a61a54e3bac"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="minmaxloc_8cl.xhtml#a17decce255d6f94a60379a61a54e3bac">DATA_TYPE_MIN</a>&#160;&#160;&#160;0x0</td></tr>
 131 <tr class="separator:a17decce255d6f94a60379a61a54e3bac"><td class="memSeparator" colspan="2">&#160;</td></tr>
 132 <tr class="memitem:afa6b114aa46a23bb226c5c9547f9f623"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="minmaxloc_8cl.xhtml#afa6b114aa46a23bb226c5c9547f9f623">DATA_TYPE_MAX</a>&#160;&#160;&#160;0xFF</td></tr>
 133 <tr class="separator:afa6b114aa46a23bb226c5c9547f9f623"><td class="memSeparator" colspan="2">&#160;</td></tr>
 134 </table><table class="memberdecls">
 135 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
 136 Functions</h2></td></tr>
 137 <tr class="memitem:a57351025b140b0b9ef881714d32d84d3"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="minmaxloc_8cl.xhtml#a57351025b140b0b9ef881714d32d84d3">minmax</a> (__global uchar *src_ptr, uint src_stride_x, uint src_step_x, uint src_stride_y, uint src_step_y, uint src_offset_first_element_in_bytes, __global int *min_max, uint width)</td></tr>
 138 <tr class="memdesc:a57351025b140b0b9ef881714d32d84d3"><td class="mdescLeft">&#160;</td><td class="mdescRight">This function identifies the min and maximum value of an input image.  <a href="#a57351025b140b0b9ef881714d32d84d3">More...</a><br /></td></tr>
 139 <tr class="separator:a57351025b140b0b9ef881714d32d84d3"><td class="memSeparator" colspan="2">&#160;</td></tr>
 140 <tr class="memitem:a31ce1a75df24b2037dc76f1748236579"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="minmaxloc_8cl.xhtml#a31ce1a75df24b2037dc76f1748236579">minmaxloc</a> (__global uchar *src_ptr, uint src_stride_x, uint src_step_x, uint src_stride_y, uint src_step_y, uint src_offset_first_element_in_bytes, __global int *min_max, __global uint *min_max_count, __global <a class="el" href="struct_coordinates2_d.xhtml">Coordinates2D</a> *min_loc, uint max_min_loc_count, __global <a class="el" href="struct_coordinates2_d.xhtml">Coordinates2D</a> *max_loc, uint max_max_loc_count)</td></tr>
 141 <tr class="memdesc:a31ce1a75df24b2037dc76f1748236579"><td class="mdescLeft">&#160;</td><td class="mdescRight">This function counts the min and max occurrences in an image and tags their position.  <a href="#a31ce1a75df24b2037dc76f1748236579">More...</a><br /></td></tr>
 142 <tr class="separator:a31ce1a75df24b2037dc76f1748236579"><td class="memSeparator" colspan="2">&#160;</td></tr>
 143 </table><table class="memberdecls">
 144 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="var-members"></a>
 145 Variables</h2></td></tr>
 146 <tr class="memitem:a538b4b63f40e7b12891774e03a4f0dec"><td class="memItemLeft" align="right" valign="top">__constant DATA_TYPE16&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="minmaxloc_8cl.xhtml#a538b4b63f40e7b12891774e03a4f0dec">type_min</a> = ( DATA_TYPE16 )( 0x0 )</td></tr>
 147 <tr class="separator:a538b4b63f40e7b12891774e03a4f0dec"><td class="memSeparator" colspan="2">&#160;</td></tr>
 148 <tr class="memitem:a4464d6f922ea17b4a9ca6a2cec7ddb75"><td class="memItemLeft" align="right" valign="top">__constant DATA_TYPE16&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="minmaxloc_8cl.xhtml#a4464d6f922ea17b4a9ca6a2cec7ddb75">type_max</a> = ( DATA_TYPE16 )( 0xFF )</td></tr>
 149 <tr class="separator:a4464d6f922ea17b4a9ca6a2cec7ddb75"><td class="memSeparator" colspan="2">&#160;</td></tr>
 150 <tr class="memitem:a0712735973f172ac9efc7d48a31e47ad"><td class="memItemLeft" align="right" valign="top">__constant uint16&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="minmaxloc_8cl.xhtml#a0712735973f172ac9efc7d48a31e47ad">idx16</a> = (uint16)(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)</td></tr>
 151 <tr class="separator:a0712735973f172ac9efc7d48a31e47ad"><td class="memSeparator" colspan="2">&#160;</td></tr>
 152 </table>
 153 <h2 class="groupheader">Macro Definition Documentation</h2>
 154 <a class="anchor" id="afa6b114aa46a23bb226c5c9547f9f623"></a>
 155 <div class="memitem">
 156 <div class="memproto">
 157       <table class="memname">
 158         <tr>
 159           <td class="memname">#define DATA_TYPE_MAX&#160;&#160;&#160;0xFF</td>
 160         </tr>
 161       </table>
 162 </div><div class="memdoc">
 163
 164 <p>Definition at line <a class="el" href="minmaxloc_8cl_source.xhtml#l00032">32</a> of file <a class="el" href="minmaxloc_8cl_source.xhtml">minmaxloc.cl</a>.</p>
 165
 166 </div>
 167 </div>
 168 <a class="anchor" id="a17decce255d6f94a60379a61a54e3bac"></a>
 169 <div class="memitem">
 170 <div class="memproto">
 171       <table class="memname">
 172         <tr>
 173           <td class="memname">#define DATA_TYPE_MIN&#160;&#160;&#160;0x0</td>
 174         </tr>
 175       </table>
 176 </div><div class="memdoc">
 177
 178 <p>Definition at line <a class="el" href="minmaxloc_8cl_source.xhtml#l00028">28</a> of file <a class="el" href="minmaxloc_8cl_source.xhtml">minmaxloc.cl</a>.</p>
 179
 180 </div>
 181 </div>
 182 <h2 class="groupheader">Function Documentation</h2>
 183 <a class="anchor" id="a57351025b140b0b9ef881714d32d84d3"></a>
 184 <div class="memitem">
 185 <div class="memproto">
 186       <table class="memname">
 187         <tr>
 188           <td class="memname">__kernel void minmax </td>
 189           <td>(</td>
 190           <td class="paramtype">__global uchar *&#160;</td>
 191           <td class="paramname"><em>src_ptr</em>, </td>
 192         </tr>
 193         <tr>
 194           <td class="paramkey"></td>
 195           <td></td>
 196           <td class="paramtype">uint&#160;</td>
 197           <td class="paramname"><em>src_stride_x</em>, </td>
 198         </tr>
 199         <tr>
 200           <td class="paramkey"></td>
 201           <td></td>
 202           <td class="paramtype">uint&#160;</td>
 203           <td class="paramname"><em>src_step_x</em>, </td>
 204         </tr>
 205         <tr>
 206           <td class="paramkey"></td>
 207           <td></td>
 208           <td class="paramtype">uint&#160;</td>
 209           <td class="paramname"><em>src_stride_y</em>, </td>
 210         </tr>
 211         <tr>
 212           <td class="paramkey"></td>
 213           <td></td>
 214           <td class="paramtype">uint&#160;</td>
 215           <td class="paramname"><em>src_step_y</em>, </td>
 216         </tr>
 217         <tr>
 218           <td class="paramkey"></td>
 219           <td></td>
 220           <td class="paramtype">uint&#160;</td>
 221           <td class="paramname"><em>src_offset_first_element_in_bytes</em>, </td>
 222         </tr>
 223         <tr>
 224           <td class="paramkey"></td>
 225           <td></td>
 226           <td class="paramtype">__global int *&#160;</td>
 227           <td class="paramname"><em>min_max</em>, </td>
 228         </tr>
 229         <tr>
 230           <td class="paramkey"></td>
 231           <td></td>
 232           <td class="paramtype">uint&#160;</td>
 233           <td class="paramname"><em>width</em>&#160;</td>
 234         </tr>
 235         <tr>
 236           <td></td>
 237           <td>)</td>
 238           <td></td><td></td>
 239         </tr>
 240       </table>
 241 </div><div class="memdoc">
 242
 243 <p>This function identifies the min and maximum value of an input image. </p>
 244 <dl class="section note"><dt>Note</dt><dd>Input image data type must be passed as a preprocessor argument using -DDATA_TYPE. Moreover, the minimum and maximum value of the given data type must be provided using -DDATA_TYPE_MIN and -DDATA_TYPE_MAX respectively. </dd>
 245 <dd>
 246 In case image width is not a multiple of 16 then -DNON_MULTIPLE_OF_16 must be passed.</dd></dl>
 247 <dl class="params"><dt>Parameters</dt><dd>
 248   <table class="params">
 249     <tr><td class="paramdir">[in]</td><td class="paramname">src_ptr</td><td>Pointer to the source image. Supported data types: U8 </td></tr>
 250     <tr><td class="paramdir">[in]</td><td class="paramname">src_stride_x</td><td>Stride of the source image in X dimension (in bytes) </td></tr>
 251     <tr><td class="paramdir">[in]</td><td class="paramname">src_step_x</td><td>src_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
 252     <tr><td class="paramdir">[in]</td><td class="paramname">src_stride_y</td><td>Stride of the source image in Y dimension (in bytes) </td></tr>
 253     <tr><td class="paramdir">[in]</td><td class="paramname">src_step_y</td><td>src_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
 254     <tr><td class="paramdir">[in]</td><td class="paramname">src_offset_first_element_in_bytes</td><td>The offset of the first element in the source image </td></tr>
 255     <tr><td class="paramdir">[out]</td><td class="paramname">min_max</td><td>Pointer to buffer with minimum value in position 0 and maximum value in position 1 </td></tr>
 256     <tr><td class="paramdir">[in]</td><td class="paramname">width</td><td>Input image width </td></tr>
 257   </table>
 258   </dd>
 259 </dl>
 260
 261 <p>Definition at line <a class="el" href="minmaxloc_8cl_source.xhtml#l00054">54</a> of file <a class="el" href="minmaxloc_8cl_source.xhtml">minmaxloc.cl</a>.</p>
 262
 263 <p>References <a class="el" href="helpers_8h_source.xhtml#l00035">CONVERT</a>, <a class="el" href="helpers_8h_source.xhtml#l00073">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="minmaxloc_8cl_source.xhtml#l00037">idx16</a>, <a class="el" href="helpers_8h_source.xhtml#l00201">offset()</a>, <a class="el" href="minmaxloc_8cl_source.xhtml#l00036">type_max</a>, <a class="el" href="minmaxloc_8cl_source.xhtml#l00035">type_min</a>, and <a class="el" href="helpers_8h_source.xhtml#l00032">VEC_DATA_TYPE</a>.</p>
 264 <div class="fragment"><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="struct_image.xhtml">Image</a> src = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(src);</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    <span class="comment">// Initialize local minimum and local maximum</span></div><div class="line"><a name="l00062"></a><span class="lineno">   62</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>, 16)</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    local_min = <a class="code" href="minmaxloc_8cl.xhtml#a4464d6f922ea17b4a9ca6a2cec7ddb75">type_max</a>;</div><div class="line"><a name="l00064"></a><span class="lineno">   64</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>, 16)</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    local_max = <a class="code" href="minmaxloc_8cl.xhtml#a538b4b63f40e7b12891774e03a4f0dec">type_min</a>;</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    <span class="comment">// Calculate min/max of row</span></div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    uint width4 = width &gt;&gt; 4;</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    for(uint i = 0; i &lt; width4; i++)</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    {</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        <a class="code" href="helpers_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(DATA_TYPE, 16)</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;        data      = vload16(0, (__global DATA_TYPE *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&amp;src, i &lt;&lt; 4, 0));</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;        local_min = min(data, local_min);</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;        local_max = max(data, local_max);</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    }</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="preprocessor">#ifdef NON_MULTIPLE_OF_16</span></div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    <span class="comment">// Handle non multiple of 16</span></div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    <a class="code" href="helpers_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(DATA_TYPE, 16)</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    data = vload16(0, (__global DATA_TYPE *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&amp;src, width4 &lt;&lt; 4, 0));</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;    <a class="code" href="helpers_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(DATA_TYPE, 16)</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;    widx      = <a class="code" href="helpers_8h.xhtml#aa8d95ba04fc73845abc6045952cae5be">CONVERT</a>(((uint16)(width4 &lt;&lt; 4) + <a class="code" href="minmaxloc_8cl.xhtml#a0712735973f172ac9efc7d48a31e47ad">idx16</a>) &lt; width, <a class="code" href="helpers_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(DATA_TYPE, 16));</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    local_max = max(local_max, select(type_min, data, widx));</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    local_min = min(local_min, select(type_max, data, widx));</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="preprocessor">#endif</span></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">// Perform min/max reduction</span></div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;    local_min.s01234567 = min(local_min.s01234567, local_min.s89ABCDEF);</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    local_max.s01234567 = max(local_max.s01234567, local_max.s89ABCDEF);</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;    local_min.s0123 = min(local_min.s0123, local_min.s4567);</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    local_max.s0123 = max(local_max.s0123, local_max.s4567);</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    local_min.s01 = min(local_min.s01, local_min.s23);</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    local_max.s01 = max(local_max.s01, local_max.s23);</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    local_min.s0 = min(local_min.s0, local_min.s1);</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;    local_max.s0 = max(local_max.s0, local_max.s1);</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;    <span class="comment">// Update global min/max</span></div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;    atomic_min(&amp;min_max[0], local_min.s0);</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    atomic_max(&amp;min_max[1], local_max.s0);</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;}</div><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>
 265 <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>
 266 <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>
 267 <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>
 268 <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>
 269 <div class="ttc" id="minmaxloc_8cl_xhtml_a538b4b63f40e7b12891774e03a4f0dec"><div class="ttname"><a href="minmaxloc_8cl.xhtml#a538b4b63f40e7b12891774e03a4f0dec">type_min</a></div><div class="ttdeci">__constant DATA_TYPE16 type_min</div><div class="ttdef"><b>Definition:</b> <a href="minmaxloc_8cl_source.xhtml#l00035">minmaxloc.cl:35</a></div></div>
 270 <div class="ttc" id="minmaxloc_8cl_xhtml_a4464d6f922ea17b4a9ca6a2cec7ddb75"><div class="ttname"><a href="minmaxloc_8cl.xhtml#a4464d6f922ea17b4a9ca6a2cec7ddb75">type_max</a></div><div class="ttdeci">__constant DATA_TYPE16 type_max</div><div class="ttdef"><b>Definition:</b> <a href="minmaxloc_8cl_source.xhtml#l00036">minmaxloc.cl:36</a></div></div>
 271 <div class="ttc" id="minmaxloc_8cl_xhtml_a0712735973f172ac9efc7d48a31e47ad"><div class="ttname"><a href="minmaxloc_8cl.xhtml#a0712735973f172ac9efc7d48a31e47ad">idx16</a></div><div class="ttdeci">__constant uint16 idx16</div><div class="ttdef"><b>Definition:</b> <a href="minmaxloc_8cl_source.xhtml#l00037">minmaxloc.cl:37</a></div></div>
 272 <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>
 273 </div><!-- fragment -->
 274 </div>
 275 </div>
 276 <a class="anchor" id="a31ce1a75df24b2037dc76f1748236579"></a>
 277 <div class="memitem">
 278 <div class="memproto">
 279       <table class="memname">
 280         <tr>
 281           <td class="memname">__kernel void minmaxloc </td>
 282           <td>(</td>
 283           <td class="paramtype">__global uchar *&#160;</td>
 284           <td class="paramname"><em>src_ptr</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>src_stride_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>src_step_x</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>src_stride_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>src_step_y</em>, </td>
 309         </tr>
 310         <tr>
 311           <td class="paramkey"></td>
 312           <td></td>
 313           <td class="paramtype">uint&#160;</td>
 314           <td class="paramname"><em>src_offset_first_element_in_bytes</em>, </td>
 315         </tr>
 316         <tr>
 317           <td class="paramkey"></td>
 318           <td></td>
 319           <td class="paramtype">__global int *&#160;</td>
 320           <td class="paramname"><em>min_max</em>, </td>
 321         </tr>
 322         <tr>
 323           <td class="paramkey"></td>
 324           <td></td>
 325           <td class="paramtype">__global uint *&#160;</td>
 326           <td class="paramname"><em>min_max_count</em>, </td>
 327         </tr>
 328         <tr>
 329           <td class="paramkey"></td>
 330           <td></td>
 331           <td class="paramtype">__global <a class="el" href="struct_coordinates2_d.xhtml">Coordinates2D</a> *&#160;</td>
 332           <td class="paramname"><em>min_loc</em>, </td>
 333         </tr>
 334         <tr>
 335           <td class="paramkey"></td>
 336           <td></td>
 337           <td class="paramtype">uint&#160;</td>
 338           <td class="paramname"><em>max_min_loc_count</em>, </td>
 339         </tr>
 340         <tr>
 341           <td class="paramkey"></td>
 342           <td></td>
 343           <td class="paramtype">__global <a class="el" href="struct_coordinates2_d.xhtml">Coordinates2D</a> *&#160;</td>
 344           <td class="paramname"><em>max_loc</em>, </td>
 345         </tr>
 346         <tr>
 347           <td class="paramkey"></td>
 348           <td></td>
 349           <td class="paramtype">uint&#160;</td>
 350           <td class="paramname"><em>max_max_loc_count</em>&#160;</td>
 351         </tr>
 352         <tr>
 353           <td></td>
 354           <td>)</td>
 355           <td></td><td></td>
 356         </tr>
 357       </table>
 358 </div><div class="memdoc">
 359
 360 <p>This function counts the min and max occurrences in an image and tags their position. </p>
 361 <dl class="section note"><dt>Note</dt><dd>-DCOUNT_MIN_MAX should be specified if we want to count the occurrences of the minimum and maximum values. </dd>
 362 <dd>
 363 -DLOCATE_MIN and/or -DLOCATE_MAX should be specified if we want to store the position of each occurrence on the given array.</dd></dl>
 364 <dl class="params"><dt>Parameters</dt><dd>
 365   <table class="params">
 366     <tr><td class="paramdir">[in]</td><td class="paramname">src_ptr</td><td>Pointer to the source image. Supported data types: U8 </td></tr>
 367     <tr><td class="paramdir">[in]</td><td class="paramname">src_stride_x</td><td>Stride of the source image in X dimension (in bytes) </td></tr>
 368     <tr><td class="paramdir">[in]</td><td class="paramname">src_step_x</td><td>src_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
 369     <tr><td class="paramdir">[in]</td><td class="paramname">src_stride_y</td><td>Stride of the source image in Y dimension (in bytes) </td></tr>
 370     <tr><td class="paramdir">[in]</td><td class="paramname">src_step_y</td><td>src_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
 371     <tr><td class="paramdir">[in]</td><td class="paramname">src_offset_first_element_in_bytes</td><td>The offset of the first element in the source image </td></tr>
 372     <tr><td class="paramdir">[in]</td><td class="paramname">min_max</td><td>Pointer to buffer with minimum value in position 0 and maximum value in position 1 </td></tr>
 373     <tr><td class="paramdir">[out]</td><td class="paramname">min_max_count</td><td>Pointer to buffer with minimum value occurrences in position 0 and maximum value occurrences in position 1 </td></tr>
 374     <tr><td class="paramdir">[out]</td><td class="paramname">min_loc</td><td>Array that holds the location of the minimum value occurrences </td></tr>
 375     <tr><td class="paramdir">[in]</td><td class="paramname">max_min_loc_count</td><td>The maximum number of min value occurrences coordinates the array can hold </td></tr>
 376     <tr><td class="paramdir">[out]</td><td class="paramname">max_loc</td><td>Array that holds the location of the maximum value occurrences </td></tr>
 377     <tr><td class="paramdir">[in]</td><td class="paramname">max_max_loc_count</td><td>The maximum number of max value occurrences coordinates the array can hold </td></tr>
 378   </table>
 379   </dd>
 380 </dl>
 381
 382 <p>Definition at line <a class="el" href="minmaxloc_8cl_source.xhtml#l00123">123</a> of file <a class="el" href="minmaxloc_8cl_source.xhtml">minmaxloc.cl</a>.</p>
 383
 384 <p>References <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>, and <a class="el" href="helpers_8h_source.xhtml#l00097">Image::ptr</a>.</p>
 385 <div class="fragment"><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;{</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> src = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(src);</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;    <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> value = *((__global <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> *)src.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;<span class="preprocessor">#if defined COUNT_MIN_MAX</span></div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;    <span class="keywordflow">if</span>(value == min_max[0])</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;    {</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;        uint idx = atomic_inc(&amp;min_max_count[0]);</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;<span class="preprocessor">#if defined  LOCATE_MIN</span></div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;        <span class="keywordflow">if</span>(idx &lt; max_min_loc_count)</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;        {</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;            min_loc[idx].x = get_global_id(0);</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;            min_loc[idx].y = get_global_id(1);</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;        }</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;    }</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;    <span class="keywordflow">if</span>(value == min_max[1])</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;    {</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;        uint idx = atomic_inc(&amp;min_max_count[1]);</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;<span class="preprocessor">#if defined  LOCATE_MAX</span></div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;        <span class="keywordflow">if</span>(idx &lt; max_max_loc_count)</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;        {</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;            max_loc[idx].x = get_global_id(0);</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;            max_loc[idx].y = get_global_id(1);</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;        }</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    }</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;}</div><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>
 386 <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>
 387 <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>
 388 <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>
 389 </div><!-- fragment -->
 390 </div>
 391 </div>
 392 <h2 class="groupheader">Variable Documentation</h2>
 393 <a class="anchor" id="a0712735973f172ac9efc7d48a31e47ad"></a>
 394 <div class="memitem">
 395 <div class="memproto">
 396       <table class="memname">
 397         <tr>
 398           <td class="memname">__constant uint16 idx16 = (uint16)(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)</td>
 399         </tr>
 400       </table>
 401 </div><div class="memdoc">
 402
 403 <p>Definition at line <a class="el" href="minmaxloc_8cl_source.xhtml#l00037">37</a> of file <a class="el" href="minmaxloc_8cl_source.xhtml">minmaxloc.cl</a>.</p>
 404
 405 <p>Referenced by <a class="el" href="minmaxloc_8cl_source.xhtml#l00054">minmax()</a>.</p>
 406
 407 </div>
 408 </div>
 409 <a class="anchor" id="a4464d6f922ea17b4a9ca6a2cec7ddb75"></a>
 410 <div class="memitem">
 411 <div class="memproto">
 412       <table class="memname">
 413         <tr>
 414           <td class="memname">__constant DATA_TYPE16 type_max = ( DATA_TYPE16 )( 0xFF )</td>
 415         </tr>
 416       </table>
 417 </div><div class="memdoc">
 418
 419 <p>Definition at line <a class="el" href="minmaxloc_8cl_source.xhtml#l00036">36</a> of file <a class="el" href="minmaxloc_8cl_source.xhtml">minmaxloc.cl</a>.</p>
 420
 421 <p>Referenced by <a class="el" href="minmaxloc_8cl_source.xhtml#l00054">minmax()</a>.</p>
 422
 423 </div>
 424 </div>
 425 <a class="anchor" id="a538b4b63f40e7b12891774e03a4f0dec"></a>
 426 <div class="memitem">
 427 <div class="memproto">
 428       <table class="memname">
 429         <tr>
 430           <td class="memname">__constant DATA_TYPE16 type_min = ( DATA_TYPE16 )( 0x0 )</td>
 431         </tr>
 432       </table>
 433 </div><div class="memdoc">
 434
 435 <p>Definition at line <a class="el" href="minmaxloc_8cl_source.xhtml#l00035">35</a> of file <a class="el" href="minmaxloc_8cl_source.xhtml">minmaxloc.cl</a>.</p>
 436
 437 <p>Referenced by <a class="el" href="minmaxloc_8cl_source.xhtml#l00054">minmax()</a>.</p>
 438
 439 </div>
 440 </div>
 441 </div><!-- contents -->
 442 </div><!-- doc-content -->
 443 <!-- start footer part -->
 444 <div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
 445   <ul>
 446     <li class="navelem"><a class="el" href="dir_68267d1309a1af8e8297ef4c3efbcdba.xhtml">src</a></li><li class="navelem"><a class="el" href="dir_aebb8dcc11953d78e620bbef0b9e2183.xhtml">core</a></li><li class="navelem"><a class="el" href="dir_8c278f79c760e5c5fbd911f9870614c1.xhtml">CL</a></li><li class="navelem"><a class="el" href="dir_25885286e9dad4fa105b7b25a8031bbf.xhtml">cl_kernels</a></li><li class="navelem"><a class="el" href="minmaxloc_8cl.xhtml">minmaxloc.cl</a></li>
 447     <li class="footer">Generated on Wed Apr 12 2017 14:26:05 for ARM Compute Library by
 448     <a href="http://www.doxygen.org/index.html">
 449     <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.11 </li>
 450   </ul>
 451 </div>
 452 </body>
 453 </html>