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118 <a href="#var-members">Variables</a> </div>
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120 <div class="title">minmaxloc.cl File Reference</div> </div>
122 <div class="contents">
123 <div class="textblock"><code>#include "<a class="el" href="helpers_8h_source.xhtml">helpers.h</a>"</code><br />
124 <code>#include "<a class="el" href="types_8h_source.xhtml">types.h</a>"</code><br />
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 </td><td class="memItemRight" valign="bottom"><a class="el" href="minmaxloc_8cl.xhtml#a17decce255d6f94a60379a61a54e3bac">DATA_TYPE_MIN</a>   0x0</td></tr>
131 <tr class="separator:a17decce255d6f94a60379a61a54e3bac"><td class="memSeparator" colspan="2"> </td></tr>
132 <tr class="memitem:afa6b114aa46a23bb226c5c9547f9f623"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="minmaxloc_8cl.xhtml#afa6b114aa46a23bb226c5c9547f9f623">DATA_TYPE_MAX</a>   0xFF</td></tr>
133 <tr class="separator:afa6b114aa46a23bb226c5c9547f9f623"><td class="memSeparator" colspan="2"> </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 </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"> </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"> </td></tr>
140 <tr class="memitem:a31ce1a75df24b2037dc76f1748236579"><td class="memItemLeft" align="right" valign="top">__kernel void </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"> </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"> </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 </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"> </td></tr>
148 <tr class="memitem:a4464d6f922ea17b4a9ca6a2cec7ddb75"><td class="memItemLeft" align="right" valign="top">__constant DATA_TYPE16 </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"> </td></tr>
150 <tr class="memitem:a0712735973f172ac9efc7d48a31e47ad"><td class="memItemLeft" align="right" valign="top">__constant uint16 </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"> </td></tr>
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">
159 <td class="memname">#define DATA_TYPE_MAX   0xFF</td>
162 </div><div class="memdoc">
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>
168 <a class="anchor" id="a17decce255d6f94a60379a61a54e3bac"></a>
169 <div class="memitem">
170 <div class="memproto">
171 <table class="memname">
173 <td class="memname">#define DATA_TYPE_MIN   0x0</td>
176 </div><div class="memdoc">
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>
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">
188 <td class="memname">__kernel void minmax </td>
190 <td class="paramtype">__global uchar * </td>
191 <td class="paramname"><em>src_ptr</em>, </td>
194 <td class="paramkey"></td>
196 <td class="paramtype">uint </td>
197 <td class="paramname"><em>src_stride_x</em>, </td>
200 <td class="paramkey"></td>
202 <td class="paramtype">uint </td>
203 <td class="paramname"><em>src_step_x</em>, </td>
206 <td class="paramkey"></td>
208 <td class="paramtype">uint </td>
209 <td class="paramname"><em>src_stride_y</em>, </td>
212 <td class="paramkey"></td>
214 <td class="paramtype">uint </td>
215 <td class="paramname"><em>src_step_y</em>, </td>
218 <td class="paramkey"></td>
220 <td class="paramtype">uint </td>
221 <td class="paramname"><em>src_offset_first_element_in_bytes</em>, </td>
224 <td class="paramkey"></td>
226 <td class="paramtype">__global int * </td>
227 <td class="paramname"><em>min_max</em>, </td>
230 <td class="paramkey"></td>
232 <td class="paramtype">uint </td>
233 <td class="paramname"><em>width</em> </td>
241 </div><div class="memdoc">
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>
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>
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>
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> {</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <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> </div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="comment">// Initialize local minimum and local maximum</span></div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <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>  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>  <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>  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> </div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="comment">// Calculate min/max of row</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  uint width4 = width >> 4;</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  for(uint i = 0; i < width4; i++)</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  {</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <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>  data = vload16(0, (__global DATA_TYPE *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&src, i << 4, 0));</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  local_min = min(data, local_min);</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  local_max = max(data, local_max);</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  }</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="preprocessor">#ifdef NON_MULTIPLE_OF_16</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="comment">// Handle non multiple of 16</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <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>  data = vload16(0, (__global DATA_TYPE *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&src, width4 << 4, 0));</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <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>  widx = <a class="code" href="helpers_8h.xhtml#aa8d95ba04fc73845abc6045952cae5be">CONVERT</a>(((uint16)(width4 << 4) + <a class="code" href="minmaxloc_8cl.xhtml#a0712735973f172ac9efc7d48a31e47ad">idx16</a>) < 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>  local_max = max(local_max, select(type_min, data, widx));</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  local_min = min(local_min, select(type_max, data, widx));</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="comment">// Perform min/max reduction</span></div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  local_min.s01234567 = min(local_min.s01234567, local_min.s89ABCDEF);</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  local_max.s01234567 = max(local_max.s01234567, local_max.s89ABCDEF);</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  local_min.s0123 = min(local_min.s0123, local_min.s4567);</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  local_max.s0123 = max(local_max.s0123, local_max.s4567);</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  local_min.s01 = min(local_min.s01, local_min.s23);</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  local_max.s01 = max(local_max.s01, local_max.s23);</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  local_min.s0 = min(local_min.s0, local_min.s1);</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  local_max.s0 = max(local_max.s0, local_max.s1);</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="comment">// Update global min/max</span></div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  atomic_min(&min_max[0], local_min.s0);</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  atomic_max(&min_max[1], local_max.s0);</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> }</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 -->
276 <a class="anchor" id="a31ce1a75df24b2037dc76f1748236579"></a>
277 <div class="memitem">
278 <div class="memproto">
279 <table class="memname">
281 <td class="memname">__kernel void minmaxloc </td>
283 <td class="paramtype">__global uchar * </td>
284 <td class="paramname"><em>src_ptr</em>, </td>
287 <td class="paramkey"></td>
289 <td class="paramtype">uint </td>
290 <td class="paramname"><em>src_stride_x</em>, </td>
293 <td class="paramkey"></td>
295 <td class="paramtype">uint </td>
296 <td class="paramname"><em>src_step_x</em>, </td>
299 <td class="paramkey"></td>
301 <td class="paramtype">uint </td>
302 <td class="paramname"><em>src_stride_y</em>, </td>
305 <td class="paramkey"></td>
307 <td class="paramtype">uint </td>
308 <td class="paramname"><em>src_step_y</em>, </td>
311 <td class="paramkey"></td>
313 <td class="paramtype">uint </td>
314 <td class="paramname"><em>src_offset_first_element_in_bytes</em>, </td>
317 <td class="paramkey"></td>
319 <td class="paramtype">__global int * </td>
320 <td class="paramname"><em>min_max</em>, </td>
323 <td class="paramkey"></td>
325 <td class="paramtype">__global uint * </td>
326 <td class="paramname"><em>min_max_count</em>, </td>
329 <td class="paramkey"></td>
331 <td class="paramtype">__global <a class="el" href="struct_coordinates2_d.xhtml">Coordinates2D</a> * </td>
332 <td class="paramname"><em>min_loc</em>, </td>
335 <td class="paramkey"></td>
337 <td class="paramtype">uint </td>
338 <td class="paramname"><em>max_min_loc_count</em>, </td>
341 <td class="paramkey"></td>
343 <td class="paramtype">__global <a class="el" href="struct_coordinates2_d.xhtml">Coordinates2D</a> * </td>
344 <td class="paramname"><em>max_loc</em>, </td>
347 <td class="paramkey"></td>
349 <td class="paramtype">uint </td>
350 <td class="paramname"><em>max_max_loc_count</em> </td>
358 </div><div class="memdoc">
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>
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>
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>
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> {</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <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> </div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <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> <span class="preprocessor">#if defined COUNT_MIN_MAX</span></div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordflow">if</span>(value == min_max[0])</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  {</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  uint idx = atomic_inc(&min_max_count[0]);</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="preprocessor">#if defined LOCATE_MIN</span></div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">if</span>(idx < max_min_loc_count)</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  {</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  min_loc[idx].x = get_global_id(0);</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  min_loc[idx].y = get_global_id(1);</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  }</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  }</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">if</span>(value == min_max[1])</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  {</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  uint idx = atomic_inc(&min_max_count[1]);</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="preprocessor">#if defined LOCATE_MAX</span></div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">if</span>(idx < max_max_loc_count)</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  {</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  max_loc[idx].x = get_global_id(0);</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  max_loc[idx].y = get_global_id(1);</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  }</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  }</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span> }</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 -->
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">
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>
401 </div><div class="memdoc">
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>
405 <p>Referenced by <a class="el" href="minmaxloc_8cl_source.xhtml#l00054">minmax()</a>.</p>
409 <a class="anchor" id="a4464d6f922ea17b4a9ca6a2cec7ddb75"></a>
410 <div class="memitem">
411 <div class="memproto">
412 <table class="memname">
414 <td class="memname">__constant DATA_TYPE16 type_max = ( DATA_TYPE16 )( 0xFF )</td>
417 </div><div class="memdoc">
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>
421 <p>Referenced by <a class="el" href="minmaxloc_8cl_source.xhtml#l00054">minmax()</a>.</p>
425 <a class="anchor" id="a538b4b63f40e7b12891774e03a4f0dec"></a>
426 <div class="memitem">
427 <div class="memproto">
428 <table class="memname">
430 <td class="memname">__constant DATA_TYPE16 type_min = ( DATA_TYPE16 )( 0x0 )</td>
433 </div><div class="memdoc">
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>
437 <p>Referenced by <a class="el" href="minmaxloc_8cl_source.xhtml#l00054">minmax()</a>.</p>
441 </div><!-- contents -->
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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>
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