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gerrit-public.fairphone.software / platform / external / ComputeLibrary / 8938bd3f40ea62ff56d6ed4e2db0a8aee34dd64a / . / documentation / warp__affine_8cl_source.xhtml
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115<div class="title">warp_affine.cl</div> </div>
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Kaizen8938bd32017-09-28 14:38:23 +0100[diff] [blame^]118<a href="warp__affine_8cl.xhtml">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/*</span></div>
119<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * Copyright (c) 2016, 2017 ARM Limited.</span></div>
120<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> *</span></div>
121<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * SPDX-License-Identifier: MIT</span></div>
122<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> *</span></div>
123<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a copy</span></div>
124<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * of this software and associated documentation files (the &quot;Software&quot;), to</span></div>
125<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> * deal in the Software without restriction, including without limitation the</span></div>
126<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or</span></div>
127<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> * sell copies of the Software, and to permit persons to whom the Software is</span></div>
128<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> * furnished to do so, subject to the following conditions:</span></div>
129<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> *</span></div>
130<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> * The above copyright notice and this permission notice shall be included in all</span></div>
131<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> * copies or substantial portions of the Software.</span></div>
132<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> *</span></div>
133<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> * THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span></div>
134<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment"> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div>
135<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span></div>
136<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div>
137<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span></div>
138<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="comment"> * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE</span></div>
139<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="comment"> * SOFTWARE.</span></div>
140<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="comment"> */</span></div>
141<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="helpers_8h.xhtml">helpers.h</a>&quot;</span></div>
142<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="warp__helpers_8h.xhtml">warp_helpers.h</a>&quot;</span></div>
143<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;</div>
144<div class="line"><a name="l00028"></a><span class="lineno"><a class="line" href="warp__affine_8cl.xhtml#aecca3f284d1acabfa6d1bd8905dc036e"> 28</a></span>&#160;<span class="keyword">inline</span> <span class="keyword">const</span> float8 <a class="code" href="warp__affine_8cl.xhtml#aecca3f284d1acabfa6d1bd8905dc036e">build_affine_mtx</a>()</div>
145<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;{</div>
146<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; <span class="keywordflow">return</span> (float8)(MAT0, MAT1, MAT2, MAT3, MAT4, MAT5, 0, 0);</div>
147<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;}</div>
148<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;</div>
149<div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="warp__affine_8cl.xhtml#a78e971ccef9598f9545f344d3a90a312"> 43</a></span>&#160;<span class="keyword">inline</span> <span class="keyword">const</span> float8 <a class="code" href="warp__affine_8cl.xhtml#a78e971ccef9598f9545f344d3a90a312">apply_affine_transform</a>(<span class="keyword">const</span> float2 coord, <span class="keyword">const</span> float8 mtx)</div>
150<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;{</div>
151<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keyword">const</span> float4 in_x_coords = (float4)(coord.s0, 1 + coord.s0, 2 + coord.s0, 3 + coord.s0);</div>
152<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="comment">// transform [x,x+1,x+2,x+3]</span></div>
153<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="keyword">const</span> float4 new_x = mad(<span class="comment">/*A*/</span> in_x_coords, (float4)(mtx.s0) <span class="comment">/*B*/</span>, mad((float4)(coord.s1), (float4)(mtx.s2), (float4)(mtx.s4)));</div>
154<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="comment">// transform [y,y+1,y+2,y+3]</span></div>
155<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keyword">const</span> float4 new_y = mad(in_x_coords, (float4)(mtx.s1), mad((float4)(coord.s1), (float4)(mtx.s3), (float4)(mtx.s5)));</div>
156<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keywordflow">return</span> (float8)(new_x.s0, new_y.s0, new_x.s1, new_y.s1, new_x.s2, new_y.s2, new_x.s3, new_y.s3);</div>
157<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;}</div>
158<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;</div>
159<div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="warp__affine_8cl.xhtml#a716ebd98bb81a3addb7f4d769e118dd9"> 79</a></span>&#160;__kernel <span class="keywordtype">void</span> <a class="code" href="warp__affine_8cl.xhtml#a716ebd98bb81a3addb7f4d769e118dd9">warp_affine_nearest_neighbour</a>(</div>
160<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(in),</div>
161<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(out),</div>
162<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> width,</div>
163<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> height)</div>
164<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;{</div>
165<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <a class="code" href="struct_image.xhtml">Image</a> in = <a class="code" href="helpers_8h.xhtml#a4334a4a76f8e9628c0fb9e1acf616e2a">CONVERT_TO_IMAGE_STRUCT_NO_STEP</a>(in);</div>
166<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; <a class="code" href="struct_image.xhtml">Image</a> out = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(out);</div>
167<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; vstore4(<a class="code" href="warp__helpers_8h.xhtml#aba42442a4c991cdbb52727fa370676f1">read_texels4</a>(&amp;in, convert_int8(<a class="code" href="warp__helpers_8h.xhtml#adbdf2ca9e8fe0b67f9359929ef743126">clamp_to_border</a>(<a class="code" href="warp__affine_8cl.xhtml#a78e971ccef9598f9545f344d3a90a312">apply_affine_transform</a>(<a class="code" href="warp__helpers_8h.xhtml#a4caaeeb51ea58015267a9974675226d1">get_current_coords</a>(), <a class="code" href="warp__affine_8cl.xhtml#aecca3f284d1acabfa6d1bd8905dc036e">build_affine_mtx</a>()), width, height))), 0, out.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div>
168<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;}</div>
169<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;</div>
170<div class="line"><a name="l00111"></a><span class="lineno"><a class="line" href="warp__affine_8cl.xhtml#a4a77d9bbbc01353083729a076cedc38c"> 111</a></span>&#160;__kernel <span class="keywordtype">void</span> <a class="code" href="warp__affine_8cl.xhtml#a4a77d9bbbc01353083729a076cedc38c">warp_affine_bilinear</a>(</div>
171<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(in),</div>
172<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(out),</div>
173<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> width,</div>
174<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> height)</div>
175<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160;{</div>
176<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <a class="code" href="struct_image.xhtml">Image</a> in = <a class="code" href="helpers_8h.xhtml#a4334a4a76f8e9628c0fb9e1acf616e2a">CONVERT_TO_IMAGE_STRUCT_NO_STEP</a>(in);</div>
177<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; <a class="code" href="struct_image.xhtml">Image</a> out = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(out);</div>
178<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; vstore4(<a class="code" href="warp__helpers_8h.xhtml#abea9f226daf3e0ad741d03cf7417d353">bilinear_interpolate</a>(&amp;in, <a class="code" href="warp__helpers_8h.xhtml#adbdf2ca9e8fe0b67f9359929ef743126">clamp_to_border</a>(<a class="code" href="warp__affine_8cl.xhtml#a78e971ccef9598f9545f344d3a90a312">apply_affine_transform</a>(<a class="code" href="warp__helpers_8h.xhtml#a4caaeeb51ea58015267a9974675226d1">get_current_coords</a>(), <a class="code" href="warp__affine_8cl.xhtml#aecca3f284d1acabfa6d1bd8905dc036e">build_affine_mtx</a>()), width, height), width, height), 0, out.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div>
179<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;}</div>
180<div class="ttc" id="warp__helpers_8h_xhtml_adbdf2ca9e8fe0b67f9359929ef743126"><div class="ttname"><a href="warp__helpers_8h.xhtml#adbdf2ca9e8fe0b67f9359929ef743126">clamp_to_border</a></div><div class="ttdeci">const float8 clamp_to_border(float8 coords, const float width, const float height)</div><div class="ttdoc">Clamps the given coordinates to the borders. </div><div class="ttdef"><b>Definition:</b> <a href="warp__helpers_8h_source.xhtml#l00033">warp_helpers.h:33</a></div></div>
181<div class="ttc" id="helpers_8h_xhtml_a4334a4a76f8e9628c0fb9e1acf616e2a"><div class="ttname"><a href="helpers_8h.xhtml#a4334a4a76f8e9628c0fb9e1acf616e2a">CONVERT_TO_IMAGE_STRUCT_NO_STEP</a></div><div class="ttdeci">#define CONVERT_TO_IMAGE_STRUCT_NO_STEP(name)</div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00096">helpers.h:96</a></div></div>
182<div class="ttc" id="helpers_8h_xhtml_a22f42fcf2077d951271df83b55c1a71a"><div class="ttname"><a href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a></div><div class="ttdeci">#define IMAGE_DECLARATION(name)</div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00057">helpers.h:57</a></div></div>
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]183<div class="ttc" id="warp__affine_8cl_xhtml_aecca3f284d1acabfa6d1bd8905dc036e"><div class="ttname"><a href="warp__affine_8cl.xhtml#aecca3f284d1acabfa6d1bd8905dc036e">build_affine_mtx</a></div><div class="ttdeci">const float8 build_affine_mtx()</div><div class="ttdoc">Returns a vector of floats contaning the matrix coefficients. </div><div class="ttdef"><b>Definition:</b> <a href="warp__affine_8cl_source.xhtml#l00028">warp_affine.cl:28</a></div></div>
184<div class="ttc" id="helpers_8h_xhtml"><div class="ttname"><a href="helpers_8h.xhtml">helpers.h</a></div></div>
Kaizen8938bd32017-09-28 14:38:23 +0100[diff] [blame^]185<div class="ttc" id="helpers_8h_xhtml_aebe814363556c244be043b13e7969197"><div class="ttname"><a href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a></div><div class="ttdeci">#define CONVERT_TO_IMAGE_STRUCT(name)</div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00093">helpers.h:93</a></div></div>
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]186<div class="ttc" id="warp__affine_8cl_xhtml_a716ebd98bb81a3addb7f4d769e118dd9"><div class="ttname"><a href="warp__affine_8cl.xhtml#a716ebd98bb81a3addb7f4d769e118dd9">warp_affine_nearest_neighbour</a></div><div class="ttdeci">__kernel void warp_affine_nearest_neighbour(__global uchar *in_ptr, uint in_stride_x, uint in_step_x, uint in_stride_y, uint in_step_y, uint in_offset_first_element_in_bytes, __global uchar *out_ptr, uint out_stride_x, uint out_step_x, uint out_stride_y, uint out_step_y, uint out_offset_first_element_in_bytes, const int width, const int height)</div><div class="ttdoc">Performs an affine transform on an image interpolating with the NEAREAST NEIGHBOUR method...</div><div class="ttdef"><b>Definition:</b> <a href="warp__affine_8cl_source.xhtml#l00079">warp_affine.cl:79</a></div></div>
187<div class="ttc" id="warp__affine_8cl_xhtml_a4a77d9bbbc01353083729a076cedc38c"><div class="ttname"><a href="warp__affine_8cl.xhtml#a4a77d9bbbc01353083729a076cedc38c">warp_affine_bilinear</a></div><div class="ttdeci">__kernel void warp_affine_bilinear(__global uchar *in_ptr, uint in_stride_x, uint in_step_x, uint in_stride_y, uint in_step_y, uint in_offset_first_element_in_bytes, __global uchar *out_ptr, uint out_stride_x, uint out_step_x, uint out_stride_y, uint out_step_y, uint out_offset_first_element_in_bytes, const int width, const int height)</div><div class="ttdoc">Performs an affine transform on an image interpolating with the BILINEAR method. </div><div class="ttdef"><b>Definition:</b> <a href="warp__affine_8cl_source.xhtml#l00111">warp_affine.cl:111</a></div></div>
Kaizen8938bd32017-09-28 14:38:23 +0100[diff] [blame^]188<div class="ttc" id="struct_image_xhtml"><div class="ttname"><a href="struct_image.xhtml">Image</a></div><div class="ttdoc">Structure to hold Image information. </div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00131">helpers.h:131</a></div></div>
189<div class="ttc" id="struct_image_xhtml_acf52c23cbd7424606c10a606524e3e32"><div class="ttname"><a href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">Image::ptr</a></div><div class="ttdeci">__global uchar * ptr</div><div class="ttdoc">Pointer to the starting postion of the buffer. </div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00133">helpers.h:133</a></div></div>
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]190<div class="ttc" id="warp__helpers_8h_xhtml"><div class="ttname"><a href="warp__helpers_8h.xhtml">warp_helpers.h</a></div></div>
191<div class="ttc" id="warp__helpers_8h_xhtml_aba42442a4c991cdbb52727fa370676f1"><div class="ttname"><a href="warp__helpers_8h.xhtml#aba42442a4c991cdbb52727fa370676f1">read_texels4</a></div><div class="ttdeci">const DATA_TYPE4 read_texels4(const Image *in, const int8 coords)</div><div class="ttdoc">Reads four texels from the input image. </div><div class="ttdef"><b>Definition:</b> <a href="warp__helpers_8h_source.xhtml#l00045">warp_helpers.h:45</a></div></div>
192<div class="ttc" id="warp__helpers_8h_xhtml_a4caaeeb51ea58015267a9974675226d1"><div class="ttname"><a href="warp__helpers_8h.xhtml#a4caaeeb51ea58015267a9974675226d1">get_current_coords</a></div><div class="ttdeci">const float2 get_current_coords()</div><div class="ttdoc">Returns the current thread coordinates. </div><div class="ttdef"><b>Definition:</b> <a href="warp__helpers_8h_source.xhtml#l00054">warp_helpers.h:54</a></div></div>
193<div class="ttc" id="warp__affine_8cl_xhtml_a78e971ccef9598f9545f344d3a90a312"><div class="ttname"><a href="warp__affine_8cl.xhtml#a78e971ccef9598f9545f344d3a90a312">apply_affine_transform</a></div><div class="ttdeci">const float8 apply_affine_transform(const float2 coord, const float8 mtx)</div><div class="ttdoc">Transforms 4 2D coordinates using the formula: </div><div class="ttdef"><b>Definition:</b> <a href="warp__affine_8cl_source.xhtml#l00043">warp_affine.cl:43</a></div></div>
194<div class="ttc" id="warp__helpers_8h_xhtml_abea9f226daf3e0ad741d03cf7417d353"><div class="ttname"><a href="warp__helpers_8h.xhtml#abea9f226daf3e0ad741d03cf7417d353">bilinear_interpolate</a></div><div class="ttdeci">const DATA_TYPE4 bilinear_interpolate(const Image *in, const float8 coords, const float width, const float height)</div><div class="ttdoc">Computes the bilinear interpolation for each set of coordinates in the vector coords and returns the ...</div><div class="ttdef"><b>Definition:</b> <a href="warp__helpers_8h_source.xhtml#l00080">warp_helpers.h:80</a></div></div>
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Kaizen8938bd32017-09-28 14:38:23 +0100[diff] [blame^]200 <li class="navelem"><a class="el" href="dir_55b5a5006e943fb664ff8cff3cfe7768.xhtml">src</a></li><li class="navelem"><a class="el" href="dir_f6c3ae42d7e27145d0a3c3e38ca1c000.xhtml">core</a></li><li class="navelem"><a class="el" href="dir_1b7ae9123c88e650426d50d95c19d414.xhtml">CL</a></li><li class="navelem"><a class="el" href="dir_b7c3d80b0dadb2139bc73b7161751c12.xhtml">cl_kernels</a></li><li class="navelem"><a class="el" href="warp__affine_8cl.xhtml">warp_affine.cl</a></li>
201 <li class="footer">Generated on Thu Sep 28 2017 14:37:50 for Compute Library by
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Kaizen8938bd32017-09-28 14:38:23 +0100[diff] [blame^]203 <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.6 </li>
Anthony Barbier871448e2017-03-24 14:54:29 +0000[diff] [blame]204 </ul>
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