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gerrit-public.fairphone.software / platform / external / ComputeLibrary / 514be65ad8d3340f53fd9591035352ed285811ba / . / documentation / quantization__layer_8cl.xhtml
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98<div class="header">
99 <div class="summary">
100<a href="#func-members">Functions</a> </div>
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102<div class="title">quantization_layer.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 />
Kaizen8938bd32017-09-28 14:38:23 +0100[diff] [blame]106</div>
107<p><a href="quantization__layer_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:a1f16fa20ae72c76df16155e6a3ad20c5"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="quantization__layer_8cl.xhtml#a1f16fa20ae72c76df16155e6a3ad20c5">quantization_layer</a> (__global uchar *input_ptr, uint input_stride_x, uint input_step_x, uint input_stride_y, uint input_step_y, uint input_stride_z, uint input_step_z, uint input_offset_first_element_in_bytes, __global uchar *output_ptr, uint output_stride_x, uint output_step_x, uint output_stride_y, uint output_step_y, uint output_stride_z, uint output_step_z, uint output_offset_first_element_in_bytes, __global uchar *min_max_ptr, uint min_max_stride_x, uint min_max_step_x, uint min_max_offset_first_element_in_bytes)</td></tr>
Anthony Barbier8140e1e2017-12-14 23:48:46 +0000[diff] [blame]112<tr class="memdesc:a1f16fa20ae72c76df16155e6a3ad20c5"><td class="mdescLeft">&#160;</td><td class="mdescRight">This performs the quantization of floating point inputs to 8-bit unsigned integers. <a href="#a1f16fa20ae72c76df16155e6a3ad20c5">More...</a><br /></td></tr>
Kaizen8938bd32017-09-28 14:38:23 +0100[diff] [blame]113<tr class="separator:a1f16fa20ae72c76df16155e6a3ad20c5"><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="a1f16fa20ae72c76df16155e6a3ad20c5"></a>
117<h2 class="memtitle"><span class="permalink"><a href="#a1f16fa20ae72c76df16155e6a3ad20c5">&#9670;&nbsp;</a></span>quantization_layer()</h2>
118
Kaizen8938bd32017-09-28 14:38:23 +0100[diff] [blame]119<div class="memitem">
120<div class="memproto">
121 <table class="memname">
122 <tr>
123 <td class="memname">__kernel void quantization_layer </td>
124 <td>(</td>
125 <td class="paramtype">__global uchar *&#160;</td>
126 <td class="paramname"><em>input_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>input_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>input_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>input_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>input_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>input_stride_z</em>, </td>
157 </tr>
158 <tr>
159 <td class="paramkey"></td>
160 <td></td>
161 <td class="paramtype">uint&#160;</td>
162 <td class="paramname"><em>input_step_z</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>input_offset_first_element_in_bytes</em>, </td>
169 </tr>
170 <tr>
171 <td class="paramkey"></td>
172 <td></td>
173 <td class="paramtype">__global uchar *&#160;</td>
174 <td class="paramname"><em>output_ptr</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>output_stride_x</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>output_step_x</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>output_stride_y</em>, </td>
193 </tr>
194 <tr>
195 <td class="paramkey"></td>
196 <td></td>
197 <td class="paramtype">uint&#160;</td>
198 <td class="paramname"><em>output_step_y</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>output_stride_z</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>output_step_z</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>output_offset_first_element_in_bytes</em>, </td>
217 </tr>
218 <tr>
219 <td class="paramkey"></td>
220 <td></td>
221 <td class="paramtype">__global uchar *&#160;</td>
222 <td class="paramname"><em>min_max_ptr</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>min_max_stride_x</em>, </td>
229 </tr>
230 <tr>
231 <td class="paramkey"></td>
232 <td></td>
233 <td class="paramtype">uint&#160;</td>
234 <td class="paramname"><em>min_max_step_x</em>, </td>
235 </tr>
236 <tr>
237 <td class="paramkey"></td>
238 <td></td>
239 <td class="paramtype">uint&#160;</td>
240 <td class="paramname"><em>min_max_offset_first_element_in_bytes</em>&#160;</td>
241 </tr>
242 <tr>
243 <td></td>
244 <td>)</td>
245 <td></td><td></td>
246 </tr>
247 </table>
248</div><div class="memdoc">
249
250<p>This performs the quantization of floating point inputs to 8-bit unsigned integers. </p>
251<dl class="params"><dt>Parameters</dt><dd>
252 <table class="params">
253 <tr><td class="paramdir">[in]</td><td class="paramname">input_ptr</td><td>Pointer to the source image. Supported data types: F32 </td></tr>
254 <tr><td class="paramdir">[in]</td><td class="paramname">input_stride_x</td><td>Stride of the source image in X dimension (in bytes) </td></tr>
255 <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>
256 <tr><td class="paramdir">[in]</td><td class="paramname">input_stride_y</td><td>Stride of the source image in Y dimension (in bytes) </td></tr>
257 <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>
258 <tr><td class="paramdir">[in]</td><td class="paramname">input_stride_z</td><td>Stride of the source tensor in Z dimension (in bytes) </td></tr>
259 <tr><td class="paramdir">[in]</td><td class="paramname">input_step_z</td><td>input_stride_z * number of elements along Z processed per workitem(in bytes) </td></tr>
260 <tr><td class="paramdir">[in]</td><td class="paramname">input_offset_first_element_in_bytes</td><td>The offset of the first element in the source image </td></tr>
261 <tr><td class="paramdir">[out]</td><td class="paramname">output_ptr</td><td>Pointer to the destination image. Supported data types: U8 </td></tr>
262 <tr><td class="paramdir">[in]</td><td class="paramname">output_stride_x</td><td>Stride of the destination image in X dimension (in bytes) </td></tr>
263 <tr><td class="paramdir">[in]</td><td class="paramname">output_step_x</td><td>output_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
264 <tr><td class="paramdir">[in]</td><td class="paramname">output_stride_y</td><td>Stride of the destination image in Y dimension (in bytes) </td></tr>
265 <tr><td class="paramdir">[in]</td><td class="paramname">output_step_y</td><td>output_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
266 <tr><td class="paramdir">[in]</td><td class="paramname">output_stride_z</td><td>Stride of the source tensor in Z dimension (in bytes) </td></tr>
267 <tr><td class="paramdir">[in]</td><td class="paramname">output_step_z</td><td>output_stride_z * number of elements along Z processed per workitem(in bytes) </td></tr>
268 <tr><td class="paramdir">[in]</td><td class="paramname">output_offset_first_element_in_bytes</td><td>The offset of the first element in the destination image </td></tr>
269 <tr><td class="paramdir">[in]</td><td class="paramname">min_max_ptr</td><td>Pointer to the min/max vector. Minimum value in position 0, maximum value in position 1. Supported data types: F32. </td></tr>
270 <tr><td class="paramdir">[in]</td><td class="paramname">min_max_stride_x</td><td>Stride of the min/max vector in X dimension (in bytes) </td></tr>
271 <tr><td class="paramdir">[in]</td><td class="paramname">min_max_step_x</td><td>min_max_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
272 <tr><td class="paramdir">[in]</td><td class="paramname">min_max_offset_first_element_in_bytes</td><td>The offset of the first element in the min/max vector </td></tr>
273 </table>
274 </dd>
275</dl>
276
Jenkinsb9abeae2018-11-22 11:58:08 +0000[diff] [blame]277<p class="definition">Definition at line <a class="el" href="quantization__layer_8cl_source.xhtml#l00049">49</a> of file <a class="el" href="quantization__layer_8cl_source.xhtml">quantization_layer.cl</a>.</p>
Jenkins514be652019-02-28 12:25:18 +0000[diff] [blame^]278<div class="fragment"><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;{</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <span class="comment">// Get pixels pointer</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <a class="code" href="struct_tensor3_d.xhtml">Tensor3D</a> input = <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a31c8c760f08fb1a331b16b7c204321dc">CONVERT_TO_TENSOR3D_STRUCT</a>(input);</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; <a class="code" href="struct_tensor3_d.xhtml">Tensor3D</a> output = <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a31c8c760f08fb1a331b16b7c204321dc">CONVERT_TO_TENSOR3D_STRUCT</a>(output);</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="comment">// min_max_value.s0 = min, min_max_value.s1 = max</span></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="keyword">const</span> float2 min_max_value = vload2(0, (__global <span class="keywordtype">float</span> *)(min_max_ptr + min_max_offset_first_element_in_bytes));</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keyword">const</span> float4 <a class="code" href="namespacearm__compute_1_1wrapper.xhtml#ab026a1aeec48074092f548c130c323f4">vmin</a> = (float4)min_max_value.s0;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="keyword">const</span> float4 vrange = (float4)(min_max_value.s1 - min_max_value.s0);</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="comment">// Load data</span></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; float4 data = vload4(0, (__global <span class="keywordtype">float</span> *)input.<a class="code" href="struct_tensor3_d.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="comment">// Map float values to range [0.0, 1.0]</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; data = (data - <a class="code" href="namespacearm__compute_1_1wrapper.xhtml#ab026a1aeec48074092f548c130c323f4">vmin</a>) / vrange;</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="comment">// Quantize and saturate</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; uchar4 res = convert_uchar4_sat(data * 256.0f);</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="comment">// Store result</span></div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; vstore4(res, 0, (__global uchar *)output.<a class="code" href="struct_tensor3_d.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;}</div><div class="ttc" id="struct_tensor3_d_xhtml"><div class="ttname"><a href="struct_tensor3_d.xhtml">Tensor3D</a></div><div class="ttdoc">Structure to hold 3D tensor information.</div><div class="ttdef"><b>Definition:</b> <a href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00160">helpers.h:160</a></div></div>
Anthony Barbier06ea0482018-02-22 15:45:35 +0000[diff] [blame]279<div class="ttc" id="namespacearm__compute_1_1wrapper_xhtml_ab026a1aeec48074092f548c130c323f4"><div class="ttname"><a href="namespacearm__compute_1_1wrapper.xhtml#ab026a1aeec48074092f548c130c323f4">arm_compute::wrapper::vmin</a></div><div class="ttdeci">uint8x8_t vmin(const uint8x8_t &amp;a, const uint8x8_t &amp;b)</div><div class="ttdef"><b>Definition:</b> <a href="min_8h_source.xhtml#l00039">min.h:39</a></div></div>
Jenkins514be652019-02-28 12:25:18 +0000[diff] [blame^]280<div class="ttc" id="src_2core_2_c_l_2cl__kernels_2_helpers_8h_xhtml_a31c8c760f08fb1a331b16b7c204321dc"><div class="ttname"><a href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a31c8c760f08fb1a331b16b7c204321dc">CONVERT_TO_TENSOR3D_STRUCT</a></div><div class="ttdeci">#define CONVERT_TO_TENSOR3D_STRUCT(name)</div><div class="ttdef"><b>Definition:</b> <a href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00128">helpers.h:128</a></div></div>
281<div class="ttc" id="struct_tensor3_d_xhtml_acf52c23cbd7424606c10a606524e3e32"><div class="ttname"><a href="struct_tensor3_d.xhtml#acf52c23cbd7424606c10a606524e3e32">Tensor3D::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#l00162">helpers.h:162</a></div></div>
Kaizen8938bd32017-09-28 14:38:23 +0100[diff] [blame]282</div><!-- fragment -->
Jenkins514be652019-02-28 12:25:18 +0000[diff] [blame^]283<p class="reference">References <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00128">CONVERT_TO_TENSOR3D_STRUCT</a>, <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00162">Tensor3D::ptr</a>, and <a class="el" href="min_8h_source.xhtml#l00039">arm_compute::wrapper::vmin()</a>.</p>
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