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115 <div class="title">gaussian_pyramid.cl</div> </div>
117 <div class="contents">
118 <a href="gaussian__pyramid_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> <span class="comment">/*</span></div>
119 <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 2017 ARM Limited.</span></div>
120 <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
121 <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * SPDX-License-Identifier: MIT</span></div>
122 <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
123 <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <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> <span class="comment"> * of this software and associated documentation files (the "Software"), to</span></div>
125 <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <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> <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> <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> <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> <span class="comment"> *</span></div>
130 <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <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> <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> <span class="comment"> *</span></div>
133 <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span></div>
134 <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <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> <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> <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> <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> <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> <span class="comment"> * SOFTWARE.</span></div>
140 <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> */</span></div>
141 <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "<a class="code" href="helpers_8h.xhtml">helpers.h</a>"</span></div>
142 <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div>
143 <div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="gaussian__pyramid_8cl.xhtml#ae8b283818e0ddb9edf271668d2682dc3"> 43</a></span> __kernel <span class="keywordtype">void</span> <a class="code" href="gaussian__pyramid_8cl.xhtml#ae8b283818e0ddb9edf271668d2682dc3">gaussian1x5_sub_x</a>(</div>
144 <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(src),</div>
145 <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(dst))</div>
146 <div class="line"><a name="l00046"></a><span class="lineno"> 46</span> {</div>
147 <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <a class="code" href="struct_image.xhtml">Image</a> src = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(src);</div>
148 <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <a class="code" href="struct_image.xhtml">Image</a> dst = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(dst);</div>
149 <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div>
150 <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="comment">// Load values for the convolution (20 bytes needed)</span></div>
151 <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  uchar16 temp0 = vload16(0, src.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div>
152 <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  uchar4 temp1 = vload4(0, src.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a> + 16);</div>
153 <div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div>
154 <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="comment">// Convert to USHORT8</span></div>
155 <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  ushort8 l2_data = convert_ushort8((uchar8)(temp0.s02468ACE));</div>
156 <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  ushort8 l1_data = convert_ushort8((uchar8)(temp0.s13579BDF));</div>
157 <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  ushort8 m_data = convert_ushort8((uchar8)(temp0.s2468, temp0.sACE, temp1.s0));</div>
158 <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  ushort8 r1_data = convert_ushort8((uchar8)(temp0.s3579, temp0.sBDF, temp1.s1));</div>
159 <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  ushort8 r2_data = convert_ushort8((uchar8)(temp0.s468A, temp0.sCE, temp1.s02));</div>
160 <div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div>
161 <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="comment">// Compute convolution along the X direction</span></div>
162 <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  ushort8 pixels = l2_data + r2_data;</div>
163 <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  pixels += l1_data * (ushort8)4;</div>
164 <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  pixels += m_data * (ushort8)6;</div>
165 <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  pixels += r1_data * (ushort8)4;</div>
166 <div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div>
167 <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="comment">// Store result</span></div>
168 <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  vstore8(pixels, 0, (__global ushort *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div>
169 <div class="line"><a name="l00069"></a><span class="lineno"> 69</span> }</div>
170 <div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
171 <div class="line"><a name="l00088"></a><span class="lineno"><a class="line" href="gaussian__pyramid_8cl.xhtml#afa433ed067b24c37933229beb846b34b"> 88</a></span> __kernel <span class="keywordtype">void</span> <a class="code" href="gaussian__pyramid_8cl.xhtml#afa433ed067b24c37933229beb846b34b">gaussian5x1_sub_y</a>(</div>
172 <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(src),</div>
173 <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(dst))</div>
174 <div class="line"><a name="l00091"></a><span class="lineno"> 91</span> {</div>
175 <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <a class="code" href="struct_image.xhtml">Image</a> src = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(src);</div>
176 <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <a class="code" href="struct_image.xhtml">Image</a> dst = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(dst);</div>
177 <div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
178 <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="comment">// Load values</span></div>
179 <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  ushort8 u2_data = vload8(0, (__global ushort *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&src, 0, 0));</div>
180 <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  ushort8 u1_data = vload8(0, (__global ushort *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&src, 0, 1));</div>
181 <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  ushort8 m_data = vload8(0, (__global ushort *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&src, 0, 2));</div>
182 <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  ushort8 d1_data = vload8(0, (__global ushort *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&src, 0, 3));</div>
183 <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  ushort8 d2_data = vload8(0, (__global ushort *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&src, 0, 4));</div>
184 <div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div>
185 <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="comment">// Compute convolution along the Y direction</span></div>
186 <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  ushort8 pixels = u2_data + d2_data;</div>
187 <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  pixels += u1_data * (ushort8)4;</div>
188 <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  pixels += m_data * (ushort8)6;</div>
189 <div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  pixels += d1_data * (ushort8)4;</div>
190 <div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div>
191 <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment">// Scale result</span></div>
192 <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  pixels >>= (ushort8)8;</div>
193 <div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div>
194 <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="comment">// Store result</span></div>
195 <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  vstore8(convert_uchar8_sat(pixels), 0, dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div>
196 <div class="line"><a name="l00113"></a><span class="lineno"> 113</span> }</div>
197 <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#l00060">helpers.h:60</a></div></div>
198 <div class="ttc" id="helpers_8h_xhtml_a009469e4d9b8fce3b6d5e97d2077827d"><div class="ttname"><a href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a></div><div class="ttdeci">__global uchar * offset(const Image *img, int x, int y)</div><div class="ttdoc">Get the pointer position of a Image. </div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00295">helpers.h:295</a></div></div>
199 <div class="ttc" id="helpers_8h_xhtml"><div class="ttname"><a href="helpers_8h.xhtml">helpers.h</a></div></div>
200 <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#l00096">helpers.h:96</a></div></div>
201 <div class="ttc" id="gaussian__pyramid_8cl_xhtml_afa433ed067b24c37933229beb846b34b"><div class="ttname"><a href="gaussian__pyramid_8cl.xhtml#afa433ed067b24c37933229beb846b34b">gaussian5x1_sub_y</a></div><div class="ttdeci">__kernel void gaussian5x1_sub_y(__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_ptr, uint dst_stride_x, uint dst_step_x, uint dst_stride_y, uint dst_step_y, uint dst_offset_first_element_in_bytes)</div><div class="ttdoc">Computes the Gaussian Filter 5x1 + sub-sampling along the Y direction. </div><div class="ttdef"><b>Definition:</b> <a href="gaussian__pyramid_8cl_source.xhtml#l00088">gaussian_pyramid.cl:88</a></div></div>
202 <div class="ttc" id="gaussian__pyramid_8cl_xhtml_ae8b283818e0ddb9edf271668d2682dc3"><div class="ttname"><a href="gaussian__pyramid_8cl.xhtml#ae8b283818e0ddb9edf271668d2682dc3">gaussian1x5_sub_x</a></div><div class="ttdeci">__kernel void gaussian1x5_sub_x(__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_ptr, uint dst_stride_x, uint dst_step_x, uint dst_stride_y, uint dst_step_y, uint dst_offset_first_element_in_bytes)</div><div class="ttdoc">Computes the Gaussian Filter 1x5 + sub-sampling along the X direction. </div><div class="ttdef"><b>Definition:</b> <a href="gaussian__pyramid_8cl_source.xhtml#l00043">gaussian_pyramid.cl:43</a></div></div>
203 <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#l00134">helpers.h:134</a></div></div>
204 <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#l00136">helpers.h:136</a></div></div>
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