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gerrit-public.fairphone.software / platform / external / ComputeLibrary / 975dfe175e3d7c62c27598b1c0e8e77ed90df463 / . / documentation / histogram_8cl.xhtml
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98<div class="header">
99 <div class="summary">
100<a href="#define-members">Macros</a> &#124;
101<a href="#func-members">Functions</a> </div>
102 <div class="headertitle">
103<div class="title">histogram.cl File Reference</div> </div>
104</div><!--header-->
105<div class="contents">
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]106<div class="textblock"><code>#include &quot;<a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml">helpers.h</a>&quot;</code><br />
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]107</div>
108<p><a href="histogram_8cl_source.xhtml">Go to the source code of this file.</a></p>
109<table class="memberdecls">
110<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
111Macros</h2></td></tr>
Anthony Barbier8140e1e2017-12-14 23:48:46 +0000[diff] [blame]112<tr class="memitem:a2c8a35cfde24ca7728709200962e1a91"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="histogram_8cl.xhtml#a2c8a35cfde24ca7728709200962e1a91">VATOMIC_INC16</a>(histogram, win_pos)</td></tr>
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]113<tr class="separator:a2c8a35cfde24ca7728709200962e1a91"><td class="memSeparator" colspan="2">&#160;</td></tr>
114</table><table class="memberdecls">
115<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
116Functions</h2></td></tr>
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]117<tr class="memitem:abc81d92c9655c4ec22fff9163b66279d"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="histogram_8cl.xhtml#abc81d92c9655c4ec22fff9163b66279d">hist_local_kernel</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, __local uint *histogram_local, __global uint *restrict histogram, uint num_bins, uint <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>, uint range, uint offrange)</td></tr>
Anthony Barbier8140e1e2017-12-14 23:48:46 +0000[diff] [blame]118<tr class="memdesc:abc81d92c9655c4ec22fff9163b66279d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Calculate the histogram of an 8 bit grayscale image. <a href="#abc81d92c9655c4ec22fff9163b66279d">More...</a><br /></td></tr>
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]119<tr class="separator:abc81d92c9655c4ec22fff9163b66279d"><td class="memSeparator" colspan="2">&#160;</td></tr>
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]120<tr class="memitem:af82fea967051b827585009463255262d"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="histogram_8cl.xhtml#af82fea967051b827585009463255262d">hist_border_kernel</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 uint *restrict histogram, uint num_bins, uint <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>, uint range, uint offrange)</td></tr>
Anthony Barbier8140e1e2017-12-14 23:48:46 +0000[diff] [blame]121<tr class="memdesc:af82fea967051b827585009463255262d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Calculate the histogram of an 8 bit grayscale image's border. <a href="#af82fea967051b827585009463255262d">More...</a><br /></td></tr>
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]122<tr class="separator:af82fea967051b827585009463255262d"><td class="memSeparator" colspan="2">&#160;</td></tr>
123<tr class="memitem:a7c8051ab952a597e66090d77f4dc60e4"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="histogram_8cl.xhtml#a7c8051ab952a597e66090d77f4dc60e4">hist_local_kernel_fixed</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, __local uint *histogram_local, __global uint *restrict histogram)</td></tr>
Anthony Barbier8140e1e2017-12-14 23:48:46 +0000[diff] [blame]124<tr class="memdesc:a7c8051ab952a597e66090d77f4dc60e4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Calculate the histogram of an 8 bit grayscale image with bin size of 256 and window size of 1. <a href="#a7c8051ab952a597e66090d77f4dc60e4">More...</a><br /></td></tr>
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]125<tr class="separator:a7c8051ab952a597e66090d77f4dc60e4"><td class="memSeparator" colspan="2">&#160;</td></tr>
126<tr class="memitem:aec6ec6157573195df9694109ebbb38ae"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="histogram_8cl.xhtml#aec6ec6157573195df9694109ebbb38ae">hist_border_kernel_fixed</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 uint *restrict histogram)</td></tr>
Anthony Barbier8140e1e2017-12-14 23:48:46 +0000[diff] [blame]127<tr class="memdesc:aec6ec6157573195df9694109ebbb38ae"><td class="mdescLeft">&#160;</td><td class="mdescRight">Calculate the histogram of an 8 bit grayscale image with bin size as 256 and window size as 1. <a href="#aec6ec6157573195df9694109ebbb38ae">More...</a><br /></td></tr>
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]128<tr class="separator:aec6ec6157573195df9694109ebbb38ae"><td class="memSeparator" colspan="2">&#160;</td></tr>
129</table>
130<h2 class="groupheader">Macro Definition Documentation</h2>
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]131<a id="a2c8a35cfde24ca7728709200962e1a91"></a>
132<h2 class="memtitle"><span class="permalink"><a href="#a2c8a35cfde24ca7728709200962e1a91">&#9670;&nbsp;</a></span>VATOMIC_INC16</h2>
133
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]134<div class="memitem">
135<div class="memproto">
136 <table class="memname">
137 <tr>
138 <td class="memname">#define VATOMIC_INC16</td>
139 <td>(</td>
140 <td class="paramtype">&#160;</td>
141 <td class="paramname">histogram, </td>
142 </tr>
143 <tr>
144 <td class="paramkey"></td>
145 <td></td>
146 <td class="paramtype">&#160;</td>
147 <td class="paramname">win_pos&#160;</td>
148 </tr>
149 <tr>
150 <td></td>
151 <td>)</td>
152 <td></td><td></td>
153 </tr>
154 </table>
155</div><div class="memdoc">
Jenkinsb3a371b2018-05-23 11:36:53 +0100[diff] [blame]156<b>Value:</b><div class="fragment"><div class="line">{ \</div><div class="line"> atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + win_pos.s0); \</div><div class="line"> atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + win_pos.s1); \</div><div class="line"> atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + win_pos.s2); \</div><div class="line"> atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + win_pos.s3); \</div><div class="line"> atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + win_pos.s4); \</div><div class="line"> atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + win_pos.s5); \</div><div class="line"> atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + win_pos.s6); \</div><div class="line"> atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + win_pos.s7); \</div><div class="line"> atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + win_pos.s8); \</div><div class="line"> atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + win_pos.s9); \</div><div class="line"> atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + win_pos.sa); \</div><div class="line"> atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + win_pos.sb); \</div><div class="line"> atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + win_pos.sc); \</div><div class="line"> atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + win_pos.sd); \</div><div class="line"> atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + win_pos.se); \</div><div class="line"> atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + win_pos.sf); \</div><div class="line"> }</div><div class="ttc" id="namespacearm__compute_1_1test_1_1validation_1_1reference_xhtml_a8c37b244d8aec5993e58b2c7f67d936d"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">arm_compute::test::validation::reference::histogram</a></div><div class="ttdeci">SimpleTensor&lt; uint32_t &gt; histogram(const SimpleTensor&lt; T &gt; &amp;src, size_t num_bins, int32_t offset, uint32_t range)</div><div class="ttdef"><b>Definition:</b> <a href="validation_2reference_2_histogram_8cpp_source.xhtml#l00038">Histogram.cpp:38</a></div></div>
Kaizen8938bd32017-09-28 14:38:23 +0100[diff] [blame]157</div><!-- fragment -->
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]158<p class="definition">Definition at line <a class="el" href="histogram_8cl_source.xhtml#l00026">26</a> of file <a class="el" href="histogram_8cl_source.xhtml">histogram.cl</a>.</p>
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]159
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]160</div>
161</div>
162<h2 class="groupheader">Function Documentation</h2>
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]163<a id="af82fea967051b827585009463255262d"></a>
164<h2 class="memtitle"><span class="permalink"><a href="#af82fea967051b827585009463255262d">&#9670;&nbsp;</a></span>hist_border_kernel()</h2>
165
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]166<div class="memitem">
167<div class="memproto">
168 <table class="memname">
169 <tr>
170 <td class="memname">__kernel void hist_border_kernel </td>
171 <td>(</td>
172 <td class="paramtype">__global uchar *&#160;</td>
173 <td class="paramname"><em>input_ptr</em>, </td>
174 </tr>
175 <tr>
176 <td class="paramkey"></td>
177 <td></td>
178 <td class="paramtype">uint&#160;</td>
179 <td class="paramname"><em>input_stride_x</em>, </td>
180 </tr>
181 <tr>
182 <td class="paramkey"></td>
183 <td></td>
184 <td class="paramtype">uint&#160;</td>
185 <td class="paramname"><em>input_step_x</em>, </td>
186 </tr>
187 <tr>
188 <td class="paramkey"></td>
189 <td></td>
190 <td class="paramtype">uint&#160;</td>
191 <td class="paramname"><em>input_stride_y</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>input_step_y</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>input_offset_first_element_in_bytes</em>, </td>
204 </tr>
205 <tr>
206 <td class="paramkey"></td>
207 <td></td>
208 <td class="paramtype">__global uint *restrict&#160;</td>
209 <td class="paramname"><em>histogram</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>num_bins</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>offset</em>, </td>
222 </tr>
223 <tr>
224 <td class="paramkey"></td>
225 <td></td>
226 <td class="paramtype">uint&#160;</td>
227 <td class="paramname"><em>range</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>offrange</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>Calculate the histogram of an 8 bit grayscale image's border. </p>
244<p>Each thread will process one pixel using global atomic. When all work items in a work group are done the resulting local histograms are added to the global histogram using global atomics.</p>
245<dl class="section note"><dt>Note</dt><dd>The input image is represented as a two-dimensional array of type uchar. The output is represented as a one-dimensional uint array of length of num_bins</dd></dl>
246<dl class="params"><dt>Parameters</dt><dd>
247 <table class="params">
248 <tr><td class="paramdir">[in]</td><td class="paramname">input_ptr</td><td>Pointer to the first source image. Supported data types: U8 </td></tr>
249 <tr><td class="paramdir">[in]</td><td class="paramname">input_stride_x</td><td>Stride of the first source image in X dimension (in bytes) </td></tr>
250 <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>
251 <tr><td class="paramdir">[in]</td><td class="paramname">input_stride_y</td><td>Stride of the first source image in Y dimension (in bytes) </td></tr>
252 <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>
253 <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 first source image </td></tr>
254 <tr><td class="paramdir">[out]</td><td class="paramname">histogram</td><td>The output buffer to hold histogram final result. Supported data types: U32 </td></tr>
255 <tr><td class="paramdir">[out]</td><td class="paramname">num_bins</td><td>The number of bins </td></tr>
256 <tr><td class="paramdir">[out]</td><td class="paramname">offset</td><td>The start of values to use (inclusive) </td></tr>
257 <tr><td class="paramdir">[out]</td><td class="paramname">range</td><td>The range of a bin </td></tr>
258 <tr><td class="paramdir">[out]</td><td class="paramname">offrange</td><td>The maximum value (exclusive) </td></tr>
259 </table>
260 </dd>
261</dl>
262
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]263<p class="definition">Definition at line <a class="el" href="histogram_8cl_source.xhtml#l00141">141</a> of file <a class="el" href="histogram_8cl_source.xhtml">histogram.cl</a>.</p>
Jenkins975dfe12019-09-02 11:47:54 +0100[diff] [blame^]264<div class="fragment"><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;{</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; <a class="code" href="struct_image.xhtml">Image</a> input_buffer = <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(input);</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; uint val = (uint)(*input_buffer.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</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; uint win_pos = (val &gt;= <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>) ? (((val - <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>) * num_bins) / <a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a87f09c74765be18a99038478f96daf9b">range</a>) : 0;</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; <span class="keywordflow">if</span>(val &gt;= <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a> &amp;&amp; (val &lt; offrange))</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; {</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + win_pos);</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;}</div><div class="ttc" id="src_2core_2_c_l_2cl__kernels_2_helpers_8h_xhtml_a009469e4d9b8fce3b6d5e97d2077827d"><div class="ttname"><a href="src_2core_2_c_l_2cl__kernels_2_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="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00328">helpers.h:328</a></div></div>
265<div class="ttc" id="src_2core_2_c_l_2cl__kernels_2_helpers_8h_xhtml_aebe814363556c244be043b13e7969197"><div class="ttname"><a href="src_2core_2_c_l_2cl__kernels_2_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="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00129">helpers.h:129</a></div></div>
Jenkins514be652019-02-28 12:25:18 +0000[diff] [blame]266<div class="ttc" id="namespacearm__compute_1_1test_1_1validation_1_1reference_xhtml_a87f09c74765be18a99038478f96daf9b"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a87f09c74765be18a99038478f96daf9b">arm_compute::test::validation::reference::range</a></div><div class="ttdeci">SimpleTensor&lt; T &gt; range(SimpleTensor&lt; T &gt; &amp;dst, float start, const size_t num_of_elements, float step)</div><div class="ttdef"><b>Definition:</b> <a href="reference_2_range_8cpp_source.xhtml#l00050">Range.cpp:50</a></div></div>
Jenkins975dfe12019-09-02 11:47:54 +0100[diff] [blame^]267<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="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00167">helpers.h:167</a></div></div>
268<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="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00169">helpers.h:169</a></div></div>
Jenkinsb3a371b2018-05-23 11:36:53 +0100[diff] [blame]269<div class="ttc" id="namespacearm__compute_1_1test_1_1validation_1_1reference_xhtml_a8c37b244d8aec5993e58b2c7f67d936d"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">arm_compute::test::validation::reference::histogram</a></div><div class="ttdeci">SimpleTensor&lt; uint32_t &gt; histogram(const SimpleTensor&lt; T &gt; &amp;src, size_t num_bins, int32_t offset, uint32_t range)</div><div class="ttdef"><b>Definition:</b> <a href="validation_2reference_2_histogram_8cpp_source.xhtml#l00038">Histogram.cpp:38</a></div></div>
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]270</div><!-- fragment -->
Jenkins975dfe12019-09-02 11:47:54 +0100[diff] [blame^]271<p class="reference">References <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00129">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="validation_2reference_2_histogram_8cpp_source.xhtml#l00038">arm_compute::test::validation::reference::histogram()</a>, <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00328">offset()</a>, <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00169">Image::ptr</a>, and <a class="el" href="reference_2_range_8cpp_source.xhtml#l00050">arm_compute::test::validation::reference::range()</a>.</p>
Jenkins514be652019-02-28 12:25:18 +0000[diff] [blame]272
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]273</div>
274</div>
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]275<a id="aec6ec6157573195df9694109ebbb38ae"></a>
276<h2 class="memtitle"><span class="permalink"><a href="#aec6ec6157573195df9694109ebbb38ae">&#9670;&nbsp;</a></span>hist_border_kernel_fixed()</h2>
277
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]278<div class="memitem">
279<div class="memproto">
280 <table class="memname">
281 <tr>
282 <td class="memname">__kernel void hist_border_kernel_fixed </td>
283 <td>(</td>
284 <td class="paramtype">__global uchar *&#160;</td>
285 <td class="paramname"><em>input_ptr</em>, </td>
286 </tr>
287 <tr>
288 <td class="paramkey"></td>
289 <td></td>
290 <td class="paramtype">uint&#160;</td>
291 <td class="paramname"><em>input_stride_x</em>, </td>
292 </tr>
293 <tr>
294 <td class="paramkey"></td>
295 <td></td>
296 <td class="paramtype">uint&#160;</td>
297 <td class="paramname"><em>input_step_x</em>, </td>
298 </tr>
299 <tr>
300 <td class="paramkey"></td>
301 <td></td>
302 <td class="paramtype">uint&#160;</td>
303 <td class="paramname"><em>input_stride_y</em>, </td>
304 </tr>
305 <tr>
306 <td class="paramkey"></td>
307 <td></td>
308 <td class="paramtype">uint&#160;</td>
309 <td class="paramname"><em>input_step_y</em>, </td>
310 </tr>
311 <tr>
312 <td class="paramkey"></td>
313 <td></td>
314 <td class="paramtype">uint&#160;</td>
315 <td class="paramname"><em>input_offset_first_element_in_bytes</em>, </td>
316 </tr>
317 <tr>
318 <td class="paramkey"></td>
319 <td></td>
320 <td class="paramtype">__global uint *restrict&#160;</td>
321 <td class="paramname"><em>histogram</em>&#160;</td>
322 </tr>
323 <tr>
324 <td></td>
325 <td>)</td>
326 <td></td><td></td>
327 </tr>
328 </table>
329</div><div class="memdoc">
330
331<p>Calculate the histogram of an 8 bit grayscale image with bin size as 256 and window size as 1. </p>
332<p>Each thread will process one pixel using global atomic. When all work items in a work group are done the resulting local histograms are added to the global histogram using global atomics.</p>
333<dl class="section note"><dt>Note</dt><dd>The input image is represented as a two-dimensional array of type uchar. The output is represented as a one-dimensional uint array of 256</dd></dl>
334<dl class="params"><dt>Parameters</dt><dd>
335 <table class="params">
336 <tr><td class="paramdir">[in]</td><td class="paramname">input_ptr</td><td>Pointer to the first source image. Supported data types: U8 </td></tr>
337 <tr><td class="paramdir">[in]</td><td class="paramname">input_stride_x</td><td>Stride of the first source image in X dimension (in bytes) </td></tr>
338 <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>
339 <tr><td class="paramdir">[in]</td><td class="paramname">input_stride_y</td><td>Stride of the first source image in Y dimension (in bytes) </td></tr>
340 <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>
341 <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 first source image </td></tr>
342 <tr><td class="paramdir">[out]</td><td class="paramname">histogram</td><td>The output buffer to hold histogram final result. Supported data types: U32 </td></tr>
343 </table>
344 </dd>
345</dl>
346
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]347<p class="definition">Definition at line <a class="el" href="histogram_8cl_source.xhtml#l00238">238</a> of file <a class="el" href="histogram_8cl_source.xhtml">histogram.cl</a>.</p>
Jenkins975dfe12019-09-02 11:47:54 +0100[diff] [blame^]348<div class="fragment"><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160;{</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160; <a class="code" href="struct_image.xhtml">Image</a> input_buffer = <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(input);</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; atomic_inc(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + *input_buffer.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160;}</div><div class="ttc" id="src_2core_2_c_l_2cl__kernels_2_helpers_8h_xhtml_aebe814363556c244be043b13e7969197"><div class="ttname"><a href="src_2core_2_c_l_2cl__kernels_2_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="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00129">helpers.h:129</a></div></div>
349<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="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00167">helpers.h:167</a></div></div>
350<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="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00169">helpers.h:169</a></div></div>
Jenkinsb3a371b2018-05-23 11:36:53 +0100[diff] [blame]351<div class="ttc" id="namespacearm__compute_1_1test_1_1validation_1_1reference_xhtml_a8c37b244d8aec5993e58b2c7f67d936d"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">arm_compute::test::validation::reference::histogram</a></div><div class="ttdeci">SimpleTensor&lt; uint32_t &gt; histogram(const SimpleTensor&lt; T &gt; &amp;src, size_t num_bins, int32_t offset, uint32_t range)</div><div class="ttdef"><b>Definition:</b> <a href="validation_2reference_2_histogram_8cpp_source.xhtml#l00038">Histogram.cpp:38</a></div></div>
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]352</div><!-- fragment -->
Jenkins975dfe12019-09-02 11:47:54 +0100[diff] [blame^]353<p class="reference">References <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00129">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="validation_2reference_2_histogram_8cpp_source.xhtml#l00038">arm_compute::test::validation::reference::histogram()</a>, and <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00169">Image::ptr</a>.</p>
Jenkins514be652019-02-28 12:25:18 +0000[diff] [blame]354
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]355</div>
356</div>
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]357<a id="abc81d92c9655c4ec22fff9163b66279d"></a>
358<h2 class="memtitle"><span class="permalink"><a href="#abc81d92c9655c4ec22fff9163b66279d">&#9670;&nbsp;</a></span>hist_local_kernel()</h2>
359
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]360<div class="memitem">
361<div class="memproto">
362 <table class="memname">
363 <tr>
364 <td class="memname">__kernel void hist_local_kernel </td>
365 <td>(</td>
366 <td class="paramtype">__global uchar *&#160;</td>
367 <td class="paramname"><em>input_ptr</em>, </td>
368 </tr>
369 <tr>
370 <td class="paramkey"></td>
371 <td></td>
372 <td class="paramtype">uint&#160;</td>
373 <td class="paramname"><em>input_stride_x</em>, </td>
374 </tr>
375 <tr>
376 <td class="paramkey"></td>
377 <td></td>
378 <td class="paramtype">uint&#160;</td>
379 <td class="paramname"><em>input_step_x</em>, </td>
380 </tr>
381 <tr>
382 <td class="paramkey"></td>
383 <td></td>
384 <td class="paramtype">uint&#160;</td>
385 <td class="paramname"><em>input_stride_y</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_step_y</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_offset_first_element_in_bytes</em>, </td>
398 </tr>
399 <tr>
400 <td class="paramkey"></td>
401 <td></td>
402 <td class="paramtype">__local uint *&#160;</td>
403 <td class="paramname"><em>histogram_local</em>, </td>
404 </tr>
405 <tr>
406 <td class="paramkey"></td>
407 <td></td>
408 <td class="paramtype">__global uint *restrict&#160;</td>
409 <td class="paramname"><em>histogram</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>num_bins</em>, </td>
416 </tr>
417 <tr>
418 <td class="paramkey"></td>
419 <td></td>
420 <td class="paramtype">uint&#160;</td>
421 <td class="paramname"><em>offset</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>range</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>offrange</em>&#160;</td>
434 </tr>
435 <tr>
436 <td></td>
437 <td>)</td>
438 <td></td><td></td>
439 </tr>
440 </table>
441</div><div class="memdoc">
442
443<p>Calculate the histogram of an 8 bit grayscale image. </p>
444<p>Each thread will process 16 pixels and use one local atomic operation per pixel. When all work items in a work group are done the resulting local histograms are added to the global histogram using global atomics.</p>
445<dl class="section note"><dt>Note</dt><dd>The input image is represented as a two-dimensional array of type uchar. The output is represented as a one-dimensional uint array of length of num_bins</dd></dl>
446<dl class="params"><dt>Parameters</dt><dd>
447 <table class="params">
448 <tr><td class="paramdir">[in]</td><td class="paramname">input_ptr</td><td>Pointer to the first source image. Supported data types: U8 </td></tr>
449 <tr><td class="paramdir">[in]</td><td class="paramname">input_stride_x</td><td>Stride of the first source image in X dimension (in bytes) </td></tr>
450 <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>
451 <tr><td class="paramdir">[in]</td><td class="paramname">input_stride_y</td><td>Stride of the first source image in Y dimension (in bytes) </td></tr>
452 <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>
453 <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 first source image </td></tr>
454 <tr><td class="paramdir">[in]</td><td class="paramname">histogram_local</td><td>The local buffer to hold histogram result in per workgroup. Supported data types: U32 </td></tr>
455 <tr><td class="paramdir">[out]</td><td class="paramname">histogram</td><td>The output buffer to hold histogram final result. Supported data types: U32 </td></tr>
456 <tr><td class="paramdir">[out]</td><td class="paramname">num_bins</td><td>The number of bins </td></tr>
457 <tr><td class="paramdir">[out]</td><td class="paramname">offset</td><td>The start of values to use (inclusive) </td></tr>
458 <tr><td class="paramdir">[out]</td><td class="paramname">range</td><td>The range of a bin </td></tr>
459 <tr><td class="paramdir">[out]</td><td class="paramname">offrange</td><td>The maximum value (exclusive) </td></tr>
460 </table>
461 </dd>
462</dl>
463
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]464<p class="definition">Definition at line <a class="el" href="histogram_8cl_source.xhtml#l00068">68</a> of file <a class="el" href="histogram_8cl_source.xhtml">histogram.cl</a>.</p>
Jenkins975dfe12019-09-02 11:47:54 +0100[diff] [blame^]465<div class="fragment"><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; <a class="code" href="struct_image.xhtml">Image</a> input_buffer = <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(input);</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; uint local_id_x = get_local_id(0);</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; uint <a class="code" href="_c_l_histogram_kernel_8cpp.xhtml#a96106a3f026454bc01a9faf1738488bf">local_x_size</a> = get_local_size(0);</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <span class="keywordflow">if</span>(num_bins &gt; <a class="code" href="_c_l_histogram_kernel_8cpp.xhtml#a96106a3f026454bc01a9faf1738488bf">local_x_size</a>)</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="keywordflow">for</span>(<span class="keywordtype">int</span> i = local_id_x; i &lt; num_bins; i += <a class="code" href="_c_l_histogram_kernel_8cpp.xhtml#a96106a3f026454bc01a9faf1738488bf">local_x_size</a>)</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; {</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; histogram_local[i] = 0;</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; }</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keywordflow">else</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; {</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keywordflow">if</span>(local_id_x &lt;= num_bins)</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; histogram_local[local_id_x] = 0;</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; }</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; uint16 vals = convert_uint16(vload16(0, input_buffer.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>));</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; uint16 win_pos = <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#af77145fbdc6b0c8931148f5597d9de53">select</a>(num_bins, ((vals - <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>) * num_bins) / <a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a87f09c74765be18a99038478f96daf9b">range</a>, (vals &gt;= <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a> &amp;&amp; vals &lt; offrange));</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; barrier(CLK_LOCAL_MEM_FENCE);</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <a class="code" href="histogram_8cl.xhtml#a2c8a35cfde24ca7728709200962e1a91">VATOMIC_INC16</a>(histogram_local, win_pos);</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; barrier(CLK_LOCAL_MEM_FENCE);</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <span class="keywordflow">if</span>(num_bins &gt; <a class="code" href="_c_l_histogram_kernel_8cpp.xhtml#a96106a3f026454bc01a9faf1738488bf">local_x_size</a>)</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; {</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = local_id_x; i &lt; num_bins; i += <a class="code" href="_c_l_histogram_kernel_8cpp.xhtml#a96106a3f026454bc01a9faf1738488bf">local_x_size</a>)</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; {</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; atomic_add(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + i, histogram_local[i]);</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; }</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; }</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; <span class="keywordflow">else</span></div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; {</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; <span class="keywordflow">if</span>(local_id_x &lt;= num_bins)</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; {</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; atomic_add(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + local_id_x, histogram_local[local_id_x]);</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; }</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; }</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;}</div><div class="ttc" id="src_2core_2_c_l_2cl__kernels_2_helpers_8h_xhtml_a009469e4d9b8fce3b6d5e97d2077827d"><div class="ttname"><a href="src_2core_2_c_l_2cl__kernels_2_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="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00328">helpers.h:328</a></div></div>
466<div class="ttc" id="src_2core_2_c_l_2cl__kernels_2_helpers_8h_xhtml_aebe814363556c244be043b13e7969197"><div class="ttname"><a href="src_2core_2_c_l_2cl__kernels_2_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="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00129">helpers.h:129</a></div></div>
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]467<div class="ttc" id="histogram_8cl_xhtml_a2c8a35cfde24ca7728709200962e1a91"><div class="ttname"><a href="histogram_8cl.xhtml#a2c8a35cfde24ca7728709200962e1a91">VATOMIC_INC16</a></div><div class="ttdeci">#define VATOMIC_INC16(histogram, win_pos)</div><div class="ttdef"><b>Definition:</b> <a href="histogram_8cl_source.xhtml#l00026">histogram.cl:26</a></div></div>
Jenkins514be652019-02-28 12:25:18 +0000[diff] [blame]468<div class="ttc" id="namespacearm__compute_1_1test_1_1validation_1_1reference_xhtml_a87f09c74765be18a99038478f96daf9b"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a87f09c74765be18a99038478f96daf9b">arm_compute::test::validation::reference::range</a></div><div class="ttdeci">SimpleTensor&lt; T &gt; range(SimpleTensor&lt; T &gt; &amp;dst, float start, const size_t num_of_elements, float step)</div><div class="ttdef"><b>Definition:</b> <a href="reference_2_range_8cpp_source.xhtml#l00050">Range.cpp:50</a></div></div>
Jenkins975dfe12019-09-02 11:47:54 +0100[diff] [blame^]469<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="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00167">helpers.h:167</a></div></div>
470<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="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00169">helpers.h:169</a></div></div>
Jenkinsb3a371b2018-05-23 11:36:53 +0100[diff] [blame]471<div class="ttc" id="namespacearm__compute_1_1test_1_1validation_1_1reference_xhtml_a8c37b244d8aec5993e58b2c7f67d936d"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">arm_compute::test::validation::reference::histogram</a></div><div class="ttdeci">SimpleTensor&lt; uint32_t &gt; histogram(const SimpleTensor&lt; T &gt; &amp;src, size_t num_bins, int32_t offset, uint32_t range)</div><div class="ttdef"><b>Definition:</b> <a href="validation_2reference_2_histogram_8cpp_source.xhtml#l00038">Histogram.cpp:38</a></div></div>
Jenkins514be652019-02-28 12:25:18 +0000[diff] [blame]472<div class="ttc" id="namespacearm__compute_1_1test_1_1validation_xhtml_af77145fbdc6b0c8931148f5597d9de53"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation.xhtml#af77145fbdc6b0c8931148f5597d9de53">arm_compute::test::validation::select</a></div><div class="ttdeci">CLSelect select</div><div class="ttdef"><b>Definition:</b> <a href="_c_l_2_select_8cpp_source.xhtml#l00164">Select.cpp:164</a></div></div>
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]473<div class="ttc" id="_c_l_histogram_kernel_8cpp_xhtml_a96106a3f026454bc01a9faf1738488bf"><div class="ttname"><a href="_c_l_histogram_kernel_8cpp.xhtml#a96106a3f026454bc01a9faf1738488bf">local_x_size</a></div><div class="ttdeci">constexpr unsigned int local_x_size</div><div class="ttdef"><b>Definition:</b> <a href="_c_l_histogram_kernel_8cpp_source.xhtml#l00046">CLHistogramKernel.cpp:46</a></div></div>
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]474</div><!-- fragment -->
Jenkins975dfe12019-09-02 11:47:54 +0100[diff] [blame^]475<p class="reference">References <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00129">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="validation_2reference_2_histogram_8cpp_source.xhtml#l00038">arm_compute::test::validation::reference::histogram()</a>, <a class="el" href="_c_l_histogram_kernel_8cpp_source.xhtml#l00046">local_x_size</a>, <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00328">offset()</a>, <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00169">Image::ptr</a>, <a class="el" href="reference_2_range_8cpp_source.xhtml#l00050">arm_compute::test::validation::reference::range()</a>, <a class="el" href="_c_l_2_select_8cpp_source.xhtml#l00164">arm_compute::test::validation::select</a>, and <a class="el" href="histogram_8cl_source.xhtml#l00026">VATOMIC_INC16</a>.</p>
Jenkins514be652019-02-28 12:25:18 +0000[diff] [blame]476
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]477</div>
478</div>
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]479<a id="a7c8051ab952a597e66090d77f4dc60e4"></a>
480<h2 class="memtitle"><span class="permalink"><a href="#a7c8051ab952a597e66090d77f4dc60e4">&#9670;&nbsp;</a></span>hist_local_kernel_fixed()</h2>
481
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]482<div class="memitem">
483<div class="memproto">
484 <table class="memname">
485 <tr>
486 <td class="memname">__kernel void hist_local_kernel_fixed </td>
487 <td>(</td>
488 <td class="paramtype">__global uchar *&#160;</td>
489 <td class="paramname"><em>input_ptr</em>, </td>
490 </tr>
491 <tr>
492 <td class="paramkey"></td>
493 <td></td>
494 <td class="paramtype">uint&#160;</td>
495 <td class="paramname"><em>input_stride_x</em>, </td>
496 </tr>
497 <tr>
498 <td class="paramkey"></td>
499 <td></td>
500 <td class="paramtype">uint&#160;</td>
501 <td class="paramname"><em>input_step_x</em>, </td>
502 </tr>
503 <tr>
504 <td class="paramkey"></td>
505 <td></td>
506 <td class="paramtype">uint&#160;</td>
507 <td class="paramname"><em>input_stride_y</em>, </td>
508 </tr>
509 <tr>
510 <td class="paramkey"></td>
511 <td></td>
512 <td class="paramtype">uint&#160;</td>
513 <td class="paramname"><em>input_step_y</em>, </td>
514 </tr>
515 <tr>
516 <td class="paramkey"></td>
517 <td></td>
518 <td class="paramtype">uint&#160;</td>
519 <td class="paramname"><em>input_offset_first_element_in_bytes</em>, </td>
520 </tr>
521 <tr>
522 <td class="paramkey"></td>
523 <td></td>
524 <td class="paramtype">__local uint *&#160;</td>
525 <td class="paramname"><em>histogram_local</em>, </td>
526 </tr>
527 <tr>
528 <td class="paramkey"></td>
529 <td></td>
530 <td class="paramtype">__global uint *restrict&#160;</td>
531 <td class="paramname"><em>histogram</em>&#160;</td>
532 </tr>
533 <tr>
534 <td></td>
535 <td>)</td>
536 <td></td><td></td>
537 </tr>
538 </table>
539</div><div class="memdoc">
540
541<p>Calculate the histogram of an 8 bit grayscale image with bin size of 256 and window size of 1. </p>
542<p>Each thread will process 16 pixels and use one local atomic operation per pixel. When all work items in a work group are done the resulting local histograms are added to the global histogram using global atomics.</p>
543<dl class="section note"><dt>Note</dt><dd>The input image is represented as a two-dimensional array of type uchar. The output is represented as a one-dimensional uint array of 256 elements</dd></dl>
544<dl class="params"><dt>Parameters</dt><dd>
545 <table class="params">
546 <tr><td class="paramdir">[in]</td><td class="paramname">input_ptr</td><td>Pointer to the first source image. Supported data types: U8 </td></tr>
547 <tr><td class="paramdir">[in]</td><td class="paramname">input_stride_x</td><td>Stride of the first source image in X dimension (in bytes) </td></tr>
548 <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>
549 <tr><td class="paramdir">[in]</td><td class="paramname">input_stride_y</td><td>Stride of the first source image in Y dimension (in bytes) </td></tr>
550 <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>
551 <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 first source image </td></tr>
552 <tr><td class="paramdir">[in]</td><td class="paramname">histogram_local</td><td>The local buffer to hold histogram result in per workgroup. Supported data types: U32 </td></tr>
553 <tr><td class="paramdir">[out]</td><td class="paramname">histogram</td><td>The output buffer to hold histogram final result. Supported data types: U32 </td></tr>
554 </table>
555 </dd>
556</dl>
557
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]558<p class="definition">Definition at line <a class="el" href="histogram_8cl_source.xhtml#l00178">178</a> of file <a class="el" href="histogram_8cl_source.xhtml">histogram.cl</a>.</p>
Jenkins975dfe12019-09-02 11:47:54 +0100[diff] [blame^]559<div class="fragment"><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160;{</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; <a class="code" href="struct_image.xhtml">Image</a> input_buffer = <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(input);</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160;</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; uint local_index = get_local_id(0);</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; uint <a class="code" href="_c_l_histogram_kernel_8cpp.xhtml#a96106a3f026454bc01a9faf1738488bf">local_x_size</a> = get_local_size(0);</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160;</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = local_index; i &lt; 256; i += <a class="code" href="_c_l_histogram_kernel_8cpp.xhtml#a96106a3f026454bc01a9faf1738488bf">local_x_size</a>)</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; {</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; histogram_local[i] = 0;</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; }</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160;</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; uint16 vals = convert_uint16(vload16(0, input_buffer.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>));</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160;</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; barrier(CLK_LOCAL_MEM_FENCE);</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160;</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; atomic_inc(histogram_local + vals.s0);</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; atomic_inc(histogram_local + vals.s1);</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; atomic_inc(histogram_local + vals.s2);</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; atomic_inc(histogram_local + vals.s3);</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; atomic_inc(histogram_local + vals.s4);</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; atomic_inc(histogram_local + vals.s5);</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; atomic_inc(histogram_local + vals.s6);</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; atomic_inc(histogram_local + vals.s7);</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; atomic_inc(histogram_local + vals.s8);</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; atomic_inc(histogram_local + vals.s9);</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; atomic_inc(histogram_local + vals.sa);</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; atomic_inc(histogram_local + vals.sb);</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; atomic_inc(histogram_local + vals.sc);</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; atomic_inc(histogram_local + vals.sd);</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; atomic_inc(histogram_local + vals.se);</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; atomic_inc(histogram_local + vals.sf);</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160;</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; barrier(CLK_LOCAL_MEM_FENCE);</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160;</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = local_index; i &lt; 256; i += <a class="code" href="_c_l_histogram_kernel_8cpp.xhtml#a96106a3f026454bc01a9faf1738488bf">local_x_size</a>)</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; {</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; atomic_add(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">histogram</a> + i, histogram_local[i]);</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; }</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160;}</div><div class="ttc" id="src_2core_2_c_l_2cl__kernels_2_helpers_8h_xhtml_aebe814363556c244be043b13e7969197"><div class="ttname"><a href="src_2core_2_c_l_2cl__kernels_2_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="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00129">helpers.h:129</a></div></div>
560<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="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00167">helpers.h:167</a></div></div>
561<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="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00169">helpers.h:169</a></div></div>
Jenkinsb3a371b2018-05-23 11:36:53 +0100[diff] [blame]562<div class="ttc" id="namespacearm__compute_1_1test_1_1validation_1_1reference_xhtml_a8c37b244d8aec5993e58b2c7f67d936d"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8c37b244d8aec5993e58b2c7f67d936d">arm_compute::test::validation::reference::histogram</a></div><div class="ttdeci">SimpleTensor&lt; uint32_t &gt; histogram(const SimpleTensor&lt; T &gt; &amp;src, size_t num_bins, int32_t offset, uint32_t range)</div><div class="ttdef"><b>Definition:</b> <a href="validation_2reference_2_histogram_8cpp_source.xhtml#l00038">Histogram.cpp:38</a></div></div>
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]563<div class="ttc" id="_c_l_histogram_kernel_8cpp_xhtml_a96106a3f026454bc01a9faf1738488bf"><div class="ttname"><a href="_c_l_histogram_kernel_8cpp.xhtml#a96106a3f026454bc01a9faf1738488bf">local_x_size</a></div><div class="ttdeci">constexpr unsigned int local_x_size</div><div class="ttdef"><b>Definition:</b> <a href="_c_l_histogram_kernel_8cpp_source.xhtml#l00046">CLHistogramKernel.cpp:46</a></div></div>
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]564</div><!-- fragment -->
Jenkins975dfe12019-09-02 11:47:54 +0100[diff] [blame^]565<p class="reference">References <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00129">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="validation_2reference_2_histogram_8cpp_source.xhtml#l00038">arm_compute::test::validation::reference::histogram()</a>, <a class="el" href="_c_l_histogram_kernel_8cpp_source.xhtml#l00046">local_x_size</a>, and <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00169">Image::ptr</a>.</p>
Jenkins514be652019-02-28 12:25:18 +0000[diff] [blame]566
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]567</div>
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Anthony Barbier8140e1e2017-12-14 23:48:46 +0000[diff] [blame]574 <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="histogram_8cl.xhtml">histogram.cl</a></li>
Jenkins975dfe12019-09-02 11:47:54 +0100[diff] [blame^]575 <li class="footer">Generated on Mon Sep 2 2019 11:47:29 for Compute Library by
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]576 <a href="http://www.doxygen.org/index.html">
Jenkins514be652019-02-28 12:25:18 +0000[diff] [blame]577 <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.15 </li>
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