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gerrit-public.fairphone.software / platform / external / ComputeLibrary / 7f09cf7dfba61aad6d6d588b1b096f56bafaad5e / . / documentation / derivative_8cl.xhtml
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Anthony Barbierdbdab852017-06-23 15:42:00 +0100[diff] [blame]10<title>Compute Library: src/core/CL/cl_kernels/derivative.cl File Reference</title>
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Jenkins7f09cf72020-01-22 18:08:16 +0000[diff] [blame^]43 &#160;<span id="projectnumber">19.11.1</span>
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98<div class="header">
99 <div class="summary">
100<a href="#func-members">Functions</a> </div>
101 <div class="headertitle">
102<div class="title">derivative.cl File Reference</div> </div>
103</div><!--header-->
104<div class="contents">
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]105<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]106</div>
107<p><a href="derivative_8cl_source.xhtml">Go to the source code of this file.</a></p>
108<table class="memberdecls">
109<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
110Functions</h2></td></tr>
111<tr class="memitem:a5bd0ba0e3feaf66458557426291f2a77"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="derivative_8cl.xhtml#a5bd0ba0e3feaf66458557426291f2a77">derivative</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 uchar *dst_gx_ptr, uint dst_gx_stride_x, uint dst_gx_step_x, uint dst_gx_stride_y, uint dst_gx_step_y, uint dst_gx_offset_first_element_in_bytes, __global uchar *dst_gy_ptr, uint dst_gy_stride_x, uint dst_gy_step_x, uint dst_gy_stride_y, uint dst_gy_step_y, uint dst_gy_offset_first_element_in_bytes)</td></tr>
Anthony Barbier8140e1e2017-12-14 23:48:46 +0000[diff] [blame]112<tr class="memdesc:a5bd0ba0e3feaf66458557426291f2a77"><td class="mdescLeft">&#160;</td><td class="mdescRight">This OpenCL kernel that computes the first-order derivative. <a href="#a5bd0ba0e3feaf66458557426291f2a77">More...</a><br /></td></tr>
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]113<tr class="separator:a5bd0ba0e3feaf66458557426291f2a77"><td class="memSeparator" colspan="2">&#160;</td></tr>
114</table>
115<h2 class="groupheader">Function Documentation</h2>
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]116<a id="a5bd0ba0e3feaf66458557426291f2a77"></a>
117<h2 class="memtitle"><span class="permalink"><a href="#a5bd0ba0e3feaf66458557426291f2a77">&#9670;&nbsp;</a></span>derivative()</h2>
118
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]119<div class="memitem">
120<div class="memproto">
121 <table class="memname">
122 <tr>
123 <td class="memname">__kernel void derivative </td>
124 <td>(</td>
125 <td class="paramtype">__global uchar *&#160;</td>
126 <td class="paramname"><em>src_ptr</em>, </td>
127 </tr>
128 <tr>
129 <td class="paramkey"></td>
130 <td></td>
131 <td class="paramtype">uint&#160;</td>
132 <td class="paramname"><em>src_stride_x</em>, </td>
133 </tr>
134 <tr>
135 <td class="paramkey"></td>
136 <td></td>
137 <td class="paramtype">uint&#160;</td>
138 <td class="paramname"><em>src_step_x</em>, </td>
139 </tr>
140 <tr>
141 <td class="paramkey"></td>
142 <td></td>
143 <td class="paramtype">uint&#160;</td>
144 <td class="paramname"><em>src_stride_y</em>, </td>
145 </tr>
146 <tr>
147 <td class="paramkey"></td>
148 <td></td>
149 <td class="paramtype">uint&#160;</td>
150 <td class="paramname"><em>src_step_y</em>, </td>
151 </tr>
152 <tr>
153 <td class="paramkey"></td>
154 <td></td>
155 <td class="paramtype">uint&#160;</td>
156 <td class="paramname"><em>src_offset_first_element_in_bytes</em>, </td>
157 </tr>
158 <tr>
159 <td class="paramkey"></td>
160 <td></td>
161 <td class="paramtype">__global uchar *&#160;</td>
162 <td class="paramname"><em>dst_gx_ptr</em>, </td>
163 </tr>
164 <tr>
165 <td class="paramkey"></td>
166 <td></td>
167 <td class="paramtype">uint&#160;</td>
168 <td class="paramname"><em>dst_gx_stride_x</em>, </td>
169 </tr>
170 <tr>
171 <td class="paramkey"></td>
172 <td></td>
173 <td class="paramtype">uint&#160;</td>
174 <td class="paramname"><em>dst_gx_step_x</em>, </td>
175 </tr>
176 <tr>
177 <td class="paramkey"></td>
178 <td></td>
179 <td class="paramtype">uint&#160;</td>
180 <td class="paramname"><em>dst_gx_stride_y</em>, </td>
181 </tr>
182 <tr>
183 <td class="paramkey"></td>
184 <td></td>
185 <td class="paramtype">uint&#160;</td>
186 <td class="paramname"><em>dst_gx_step_y</em>, </td>
187 </tr>
188 <tr>
189 <td class="paramkey"></td>
190 <td></td>
191 <td class="paramtype">uint&#160;</td>
192 <td class="paramname"><em>dst_gx_offset_first_element_in_bytes</em>, </td>
193 </tr>
194 <tr>
195 <td class="paramkey"></td>
196 <td></td>
197 <td class="paramtype">__global uchar *&#160;</td>
198 <td class="paramname"><em>dst_gy_ptr</em>, </td>
199 </tr>
200 <tr>
201 <td class="paramkey"></td>
202 <td></td>
203 <td class="paramtype">uint&#160;</td>
204 <td class="paramname"><em>dst_gy_stride_x</em>, </td>
205 </tr>
206 <tr>
207 <td class="paramkey"></td>
208 <td></td>
209 <td class="paramtype">uint&#160;</td>
210 <td class="paramname"><em>dst_gy_step_x</em>, </td>
211 </tr>
212 <tr>
213 <td class="paramkey"></td>
214 <td></td>
215 <td class="paramtype">uint&#160;</td>
216 <td class="paramname"><em>dst_gy_stride_y</em>, </td>
217 </tr>
218 <tr>
219 <td class="paramkey"></td>
220 <td></td>
221 <td class="paramtype">uint&#160;</td>
222 <td class="paramname"><em>dst_gy_step_y</em>, </td>
223 </tr>
224 <tr>
225 <td class="paramkey"></td>
226 <td></td>
227 <td class="paramtype">uint&#160;</td>
228 <td class="paramname"><em>dst_gy_offset_first_element_in_bytes</em>&#160;</td>
229 </tr>
230 <tr>
231 <td></td>
232 <td>)</td>
233 <td></td><td></td>
234 </tr>
235 </table>
236</div><div class="memdoc">
237
238<p>This OpenCL kernel that computes the first-order derivative. </p>
239<dl class="section attention"><dt>Attention</dt><dd>To enable computation of the X gradient -DGRAD_X must be passed at compile time, while computation of the Y gradient is performed when -DGRAD_Y is used. You can use both when computation of both gradients is required.</dd></dl>
240<dl class="params"><dt>Parameters</dt><dd>
241 <table class="params">
242 <tr><td class="paramdir">[in]</td><td class="paramname">src_ptr</td><td>Pointer to the source image. Supported data types: U8 </td></tr>
243 <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>
244 <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>
245 <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>
246 <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>
247 <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>
248 <tr><td class="paramdir">[out]</td><td class="paramname">dst_gx_ptr</td><td>Pointer to the destination image. Supported data types: S16 </td></tr>
249 <tr><td class="paramdir">[in]</td><td class="paramname">dst_gx_stride_x</td><td>Stride of the destination image in X dimension (in bytes) </td></tr>
250 <tr><td class="paramdir">[in]</td><td class="paramname">dst_gx_step_x</td><td>dst_gx_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
251 <tr><td class="paramdir">[in]</td><td class="paramname">dst_gx_stride_y</td><td>Stride of the destination image in Y dimension (in bytes) </td></tr>
252 <tr><td class="paramdir">[in]</td><td class="paramname">dst_gx_step_y</td><td>dst_gx_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
253 <tr><td class="paramdir">[in]</td><td class="paramname">dst_gx_offset_first_element_in_bytes</td><td>The offset of the first element in the destination image </td></tr>
254 <tr><td class="paramdir">[out]</td><td class="paramname">dst_gy_ptr</td><td>Pointer to the destination image. Supported data types: S16 </td></tr>
255 <tr><td class="paramdir">[in]</td><td class="paramname">dst_gy_stride_x</td><td>Stride of the destination image in X dimension (in bytes) </td></tr>
256 <tr><td class="paramdir">[in]</td><td class="paramname">dst_gy_step_x</td><td>dst_gy_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
257 <tr><td class="paramdir">[in]</td><td class="paramname">dst_gy_stride_y</td><td>Stride of the destination image in Y dimension (in bytes) </td></tr>
258 <tr><td class="paramdir">[in]</td><td class="paramname">dst_gy_step_y</td><td>dst_gy_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
259 <tr><td class="paramdir">[in]</td><td class="paramname">dst_gy_offset_first_element_in_bytes</td><td>The offset of the first element in the destination image </td></tr>
260 </table>
261 </dd>
262</dl>
263
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]264<p class="definition">Definition at line <a class="el" href="derivative_8cl_source.xhtml#l00050">50</a> of file <a class="el" href="derivative_8cl_source.xhtml">derivative.cl</a>.</p>
Jenkins0e205f72019-11-28 16:53:35 +0000[diff] [blame]265<div class="fragment"><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;{</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <a class="code" href="struct_image.xhtml">Image</a> <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#a989ab3e96426615bb98e04e0235088ca">src</a> = <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(<a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#a989ab3e96426615bb98e04e0235088ca">src</a>);</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="preprocessor">#ifdef GRAD_X</span></div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <a class="code" href="struct_image.xhtml">Image</a> dst_gx = <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(dst_gx);</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* GRAD_X */</span><span class="preprocessor"></span></div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;<span class="preprocessor">#ifdef GRAD_Y</span></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <a class="code" href="struct_image.xhtml">Image</a> dst_gy = <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(dst_gy);</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* GRAD_Y */</span><span class="preprocessor"></span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;<span class="preprocessor">#ifdef GRAD_X</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; short16 l_data = convert_short16(vload16(0, <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&amp;<a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#a989ab3e96426615bb98e04e0235088ca">src</a>, -1, 0)));</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; short16 r_data = convert_short16(vload16(0, <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&amp;<a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#a989ab3e96426615bb98e04e0235088ca">src</a>, 1, 0)));</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; vstore16(r_data - l_data, 0, ((__global <span class="keywordtype">short</span> *)dst_gx.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>));</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* GRAD_X */</span><span class="preprocessor"></span></div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;<span class="preprocessor">#ifdef GRAD_Y</span></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; short16 t_data = convert_short16(vload16(0, <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&amp;<a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#a989ab3e96426615bb98e04e0235088ca">src</a>, 0, -1)));</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; short16 b_data = convert_short16(vload16(0, <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&amp;<a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#a989ab3e96426615bb98e04e0235088ca">src</a>, 0, 1)));</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; vstore16(b_data - t_data, 0, ((__global <span class="keywordtype">short</span> *)dst_gy.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>));</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* GRAD_Y */</span><span class="preprocessor"></span></div><div class="line"><a name="l00080"></a><span class="lineno"> 80</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#l00510">helpers.h:510</a></div></div>
266<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#l00311">helpers.h:311</a></div></div>
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#l00349">helpers.h:349</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#l00351">helpers.h:351</a></div></div>
Jenkins975dfe12019-09-02 11:47:54 +0100[diff] [blame]269<div class="ttc" id="namespacearm__compute_1_1test_1_1validation_xhtml_a989ab3e96426615bb98e04e0235088ca"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation.xhtml#a989ab3e96426615bb98e04e0235088ca">arm_compute::test::validation::src</a></div><div class="ttdeci">cast configure &amp; src</div><div class="ttdef"><b>Definition:</b> <a href="_c_l_2_cast_8cpp_source.xhtml#l00169">Cast.cpp:169</a></div></div>
Jenkins514be652019-02-28 12:25:18 +0000[diff] [blame]270</div><!-- fragment -->
Jenkins0e205f72019-11-28 16:53:35 +0000[diff] [blame]271<p class="reference">References <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00311">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00510">offset()</a>, <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00351">Image::ptr</a>, and <a class="el" href="_c_l_2_cast_8cpp_source.xhtml#l00169">arm_compute::test::validation::src</a>.</p>
Anthony Barbierf45d5a92018-01-24 16:23:15 +0000[diff] [blame]272
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]273<p class="reference">Referenced by <a class="el" href="_c_l_2_derivative_8cpp_source.xhtml#l00047">arm_compute::test::validation::DATA_TEST_CASE()</a>.</p>
Jenkins514be652019-02-28 12:25:18 +0000[diff] [blame]274
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]275</div>
276</div>
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Anthony Barbier8140e1e2017-12-14 23:48:46 +0000[diff] [blame]282 <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="derivative_8cl.xhtml">derivative.cl</a></li>
Jenkins7f09cf72020-01-22 18:08:16 +0000[diff] [blame^]283 <li class="footer">Generated on Wed Jan 22 2020 18:07:47 for Compute Library by
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]284 <a href="http://www.doxygen.org/index.html">
Jenkins514be652019-02-28 12:25:18 +0000[diff] [blame]285 <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.15 </li>
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