documentation/sobel__filter_8cl.xhtml

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 114 <div class="header">
 115   <div class="summary">
 116 <a href="#define-members">Macros</a> &#124;
 117 <a href="#func-members">Functions</a>  </div>
 118   <div class="headertitle">
 119 <div class="title">sobel_filter.cl File Reference</div>  </div>
 120 </div><!--header-->
 121 <div class="contents">
 122 <div class="textblock"><code>#include &quot;<a class="el" href="helpers_8h_source.xhtml">helpers.h</a>&quot;</code><br />
 123 </div>
 124 <p><a href="sobel__filter_8cl_source.xhtml">Go to the source code of this file.</a></p>
 125 <table class="memberdecls">
 126 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
 127 Macros</h2></td></tr>
 128 <tr class="memitem:a8476f4a8de2c191433342c9ce896986a"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a8476f4a8de2c191433342c9ce896986a">X0</a>&#160;&#160;&#160;-1</td></tr>
 129 <tr class="separator:a8476f4a8de2c191433342c9ce896986a"><td class="memSeparator" colspan="2">&#160;</td></tr>
 130 <tr class="memitem:a1964818ccd90a6173ea48cecb652feeb"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a1964818ccd90a6173ea48cecb652feeb">X1</a>&#160;&#160;&#160;-4</td></tr>
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 132 <tr class="memitem:a79ae03a0214cb30e57b9e8835f2a0019"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a79ae03a0214cb30e57b9e8835f2a0019">X2</a>&#160;&#160;&#160;-5</td></tr>
 133 <tr class="separator:a79ae03a0214cb30e57b9e8835f2a0019"><td class="memSeparator" colspan="2">&#160;</td></tr>
 134 <tr class="memitem:adb6fd3d004959525c6a684b82ef50860"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#adb6fd3d004959525c6a684b82ef50860">X3</a>&#160;&#160;&#160;0</td></tr>
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 136 <tr class="memitem:a0f79fa7387c308a89a30682d905aa40a"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a0f79fa7387c308a89a30682d905aa40a">X4</a>&#160;&#160;&#160;5</td></tr>
 137 <tr class="separator:a0f79fa7387c308a89a30682d905aa40a"><td class="memSeparator" colspan="2">&#160;</td></tr>
 138 <tr class="memitem:a921884524c9038883b25f03d3bd1b078"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a921884524c9038883b25f03d3bd1b078">X5</a>&#160;&#160;&#160;4</td></tr>
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 140 <tr class="memitem:a0e11bba5150b8ae2a8831f6f4532e352"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a0e11bba5150b8ae2a8831f6f4532e352">X6</a>&#160;&#160;&#160;1</td></tr>
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 144 <tr class="memitem:a294189cdea31dda8faf609b9b3e2000a"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a294189cdea31dda8faf609b9b3e2000a">Y1</a>&#160;&#160;&#160;6</td></tr>
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 147 <tr class="separator:a3128cc29e366777d66d8b049451ca8a0"><td class="memSeparator" colspan="2">&#160;</td></tr>
 148 <tr class="memitem:a676acf01638364a90adf5d09d2a215bf"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a676acf01638364a90adf5d09d2a215bf">Y3</a>&#160;&#160;&#160;20</td></tr>
 149 <tr class="separator:a676acf01638364a90adf5d09d2a215bf"><td class="memSeparator" colspan="2">&#160;</td></tr>
 150 <tr class="memitem:a5a8e903c2373c4d65724c79cdea8b3d9"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a5a8e903c2373c4d65724c79cdea8b3d9">Y4</a>&#160;&#160;&#160;15</td></tr>
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 152 <tr class="memitem:a770267173956bf918cf3ca1247b6de12"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a770267173956bf918cf3ca1247b6de12">Y5</a>&#160;&#160;&#160;6</td></tr>
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 154 <tr class="memitem:abcdba0de8723fe6f2d2eb284d7e98a41"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#abcdba0de8723fe6f2d2eb284d7e98a41">Y6</a>&#160;&#160;&#160;1</td></tr>
 155 <tr class="separator:abcdba0de8723fe6f2d2eb284d7e98a41"><td class="memSeparator" colspan="2">&#160;</td></tr>
 156 <tr class="memitem:ad40297671e8a51899c6114386492006b"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#ad40297671e8a51899c6114386492006b">SOBEL1x1_HOR</a>(src,  gx,  gy,  idx)</td></tr>
 157 <tr class="separator:ad40297671e8a51899c6114386492006b"><td class="memSeparator" colspan="2">&#160;</td></tr>
 158 <tr class="memitem:a400b86850d6a242a7f48804a097c6403"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a400b86850d6a242a7f48804a097c6403">SOBEL1x1_VERT</a>(src,  g,  direction,  idx)</td></tr>
 159 <tr class="separator:a400b86850d6a242a7f48804a097c6403"><td class="memSeparator" colspan="2">&#160;</td></tr>
 160 <tr class="memitem:a7f602251e0a1f8710f8aab3aef09a36b"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a7f602251e0a1f8710f8aab3aef09a36b">SOBEL1x7</a>(ptr,  gx,  gy)</td></tr>
 161 <tr class="separator:a7f602251e0a1f8710f8aab3aef09a36b"><td class="memSeparator" colspan="2">&#160;</td></tr>
 162 <tr class="memitem:a59f291bf2b268f9b850fa81a3fbf776a"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a59f291bf2b268f9b850fa81a3fbf776a">SOBEL7x1</a>(ptr,  g,  direction)</td></tr>
 163 <tr class="separator:a59f291bf2b268f9b850fa81a3fbf776a"><td class="memSeparator" colspan="2">&#160;</td></tr>
 164 </table><table class="memberdecls">
 165 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
 166 Functions</h2></td></tr>
 167 <tr class="memitem:ad48e3b9dda20b039199eaea842350975"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#ad48e3b9dda20b039199eaea842350975">sobel3x3</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>
 168 <tr class="memdesc:ad48e3b9dda20b039199eaea842350975"><td class="mdescLeft">&#160;</td><td class="mdescRight">This OpenCL kernel that computes a Sobel3x3 filter.  <a href="#ad48e3b9dda20b039199eaea842350975">More...</a><br /></td></tr>
 169 <tr class="separator:ad48e3b9dda20b039199eaea842350975"><td class="memSeparator" colspan="2">&#160;</td></tr>
 170 <tr class="memitem:a4fac2cb52458aa4666af5b521d2a3910"><td class="memItemLeft" align="right" valign="top">short16&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a4fac2cb52458aa4666af5b521d2a3910">sobel1x5</a> (<a class="el" href="struct_image.xhtml">Image</a> *src, const short left1_coeff_gx, const short left2_coeff_gx, const short middle_coeff_gx, const short right1_coeff_gx, const short right2_coeff_gx, const short left1_coeff_gy, const short left2_coeff_gy, const short middle_coeff_gy, const short right1_coeff_gy, const short right2_coeff_gy)</td></tr>
 171 <tr class="memdesc:a4fac2cb52458aa4666af5b521d2a3910"><td class="mdescLeft">&#160;</td><td class="mdescRight">Compute a 1D horizontal sobel filter 1x5 for 8 bytes assuming the input is made of 1 channel of 1 byte (i.e 8 pixels).  <a href="#a4fac2cb52458aa4666af5b521d2a3910">More...</a><br /></td></tr>
 172 <tr class="separator:a4fac2cb52458aa4666af5b521d2a3910"><td class="memSeparator" colspan="2">&#160;</td></tr>
 173 <tr class="memitem:a1cfe58175749124762fe0dea315d3c21"><td class="memItemLeft" align="right" valign="top">short8&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a1cfe58175749124762fe0dea315d3c21">sobel5x1</a> (<a class="el" href="struct_image.xhtml">Image</a> *src, const short up1_coeff, const short up2_coeff, const short middle_coeff, const short down1_coeff, const short down2_coeff)</td></tr>
 174 <tr class="memdesc:a1cfe58175749124762fe0dea315d3c21"><td class="mdescLeft">&#160;</td><td class="mdescRight">Compute a 1D vertical sobel filter 5x1 for 8 bytes assuming the input is made of 1 channel of 1 byte (i.e 8 pixels).  <a href="#a1cfe58175749124762fe0dea315d3c21">More...</a><br /></td></tr>
 175 <tr class="separator:a1cfe58175749124762fe0dea315d3c21"><td class="memSeparator" colspan="2">&#160;</td></tr>
 176 <tr class="memitem:a7a74e414f0e90638939a7a0506576625"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a7a74e414f0e90638939a7a0506576625">sobel_separable1x5</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>
 177 <tr class="memdesc:a7a74e414f0e90638939a7a0506576625"><td class="mdescLeft">&#160;</td><td class="mdescRight">Apply a 1x5 sobel matrix to a single channel U8 input image and output two temporary channel S16 images.  <a href="#a7a74e414f0e90638939a7a0506576625">More...</a><br /></td></tr>
 178 <tr class="separator:a7a74e414f0e90638939a7a0506576625"><td class="memSeparator" colspan="2">&#160;</td></tr>
 179 <tr class="memitem:a2cc1fcdd12f2c3cdd31b83fd59597e40"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a2cc1fcdd12f2c3cdd31b83fd59597e40">sobel_separable5x1</a> (__global uchar *src_x_ptr, uint src_x_stride_x, uint src_x_step_x, uint src_x_stride_y, uint src_x_step_y, uint src_x_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 *src_y_ptr, uint src_y_stride_x, uint src_y_step_x, uint src_y_stride_y, uint src_y_step_y, uint src_y_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, int dummy)</td></tr>
 180 <tr class="memdesc:a2cc1fcdd12f2c3cdd31b83fd59597e40"><td class="mdescLeft">&#160;</td><td class="mdescRight">Apply a 5x1 convolution matrix to two single channel S16 input temporary images and output two single channel S16 images.  <a href="#a2cc1fcdd12f2c3cdd31b83fd59597e40">More...</a><br /></td></tr>
 181 <tr class="separator:a2cc1fcdd12f2c3cdd31b83fd59597e40"><td class="memSeparator" colspan="2">&#160;</td></tr>
 182 <tr class="memitem:ad8be5e69836ab70ac229279a7d7edaf7"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#ad8be5e69836ab70ac229279a7d7edaf7">sobel_separable1x7</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>
 183 <tr class="memdesc:ad8be5e69836ab70ac229279a7d7edaf7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Apply a 1x7 sobel matrix to a single channel U8 input image and output two temporary channel S16 images and leave the borders undefined.  <a href="#ad8be5e69836ab70ac229279a7d7edaf7">More...</a><br /></td></tr>
 184 <tr class="separator:ad8be5e69836ab70ac229279a7d7edaf7"><td class="memSeparator" colspan="2">&#160;</td></tr>
 185 <tr class="memitem:a8cdc6e6df9d40cec1e857917d14ee75f"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="sobel__filter_8cl.xhtml#a8cdc6e6df9d40cec1e857917d14ee75f">sobel_separable7x1</a> (__global uchar *src_x_ptr, uint src_x_stride_x, uint src_x_step_x, uint src_x_stride_y, uint src_x_step_y, uint src_x_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 *src_y_ptr, uint src_y_stride_x, uint src_y_step_x, uint src_y_stride_y, uint src_y_step_y, uint src_y_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, int dummy)</td></tr>
 186 <tr class="memdesc:a8cdc6e6df9d40cec1e857917d14ee75f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Apply a 7x1 convolution matrix to two single channel S16 input temporary images and output two single channel S16 images and leave the borders undefined.  <a href="#a8cdc6e6df9d40cec1e857917d14ee75f">More...</a><br /></td></tr>
 187 <tr class="separator:a8cdc6e6df9d40cec1e857917d14ee75f"><td class="memSeparator" colspan="2">&#160;</td></tr>
 188 </table>
 189 <h2 class="groupheader">Macro Definition Documentation</h2>
 190 <a class="anchor" id="ad40297671e8a51899c6114386492006b"></a>
 191 <div class="memitem">
 192 <div class="memproto">
 193       <table class="memname">
 194         <tr>
 195           <td class="memname">#define SOBEL1x1_HOR</td>
 196           <td>(</td>
 197           <td class="paramtype">&#160;</td>
 198           <td class="paramname">src, </td>
 199         </tr>
 200         <tr>
 201           <td class="paramkey"></td>
 202           <td></td>
 203           <td class="paramtype">&#160;</td>
 204           <td class="paramname">gx, </td>
 205         </tr>
 206         <tr>
 207           <td class="paramkey"></td>
 208           <td></td>
 209           <td class="paramtype">&#160;</td>
 210           <td class="paramname">gy, </td>
 211         </tr>
 212         <tr>
 213           <td class="paramkey"></td>
 214           <td></td>
 215           <td class="paramtype">&#160;</td>
 216           <td class="paramname">idx&#160;</td>
 217         </tr>
 218         <tr>
 219           <td></td>
 220           <td>)</td>
 221           <td></td><td></td>
 222         </tr>
 223       </table>
 224 </div><div class="memdoc">
 225 <b>Value:</b><div class="fragment"><div class="line">{                                                                \</div><div class="line">        int8 val = convert_int8(vload8(0, <a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(src, idx - 3, 0))); \</div><div class="line">        gx += val * X##idx;                                          \</div><div class="line">        gy += val * <a class="code" href="namespacearm__compute.xhtml#a1ce9b523fd4f3b5bbcadcd796183455aa57cec4137b614c87cb4e24a3d003a3e0">Y</a>##idx;                                          \</div><div class="line">    }</div><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#l00201">helpers.h:201</a></div></div>
 226 <div class="ttc" id="namespacearm__compute_xhtml_a1ce9b523fd4f3b5bbcadcd796183455aa57cec4137b614c87cb4e24a3d003a3e0"><div class="ttname"><a href="namespacearm__compute.xhtml#a1ce9b523fd4f3b5bbcadcd796183455aa57cec4137b614c87cb4e24a3d003a3e0">arm_compute::Channel::Y</a></div><div class="ttdoc">Luma channel. </div></div>
 227 </div><!-- fragment -->
 228 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00384">384</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 229
 230 </div>
 231 </div>
 232 <a class="anchor" id="a400b86850d6a242a7f48804a097c6403"></a>
 233 <div class="memitem">
 234 <div class="memproto">
 235       <table class="memname">
 236         <tr>
 237           <td class="memname">#define SOBEL1x1_VERT</td>
 238           <td>(</td>
 239           <td class="paramtype">&#160;</td>
 240           <td class="paramname">src, </td>
 241         </tr>
 242         <tr>
 243           <td class="paramkey"></td>
 244           <td></td>
 245           <td class="paramtype">&#160;</td>
 246           <td class="paramname">g, </td>
 247         </tr>
 248         <tr>
 249           <td class="paramkey"></td>
 250           <td></td>
 251           <td class="paramtype">&#160;</td>
 252           <td class="paramname">direction, </td>
 253         </tr>
 254         <tr>
 255           <td class="paramkey"></td>
 256           <td></td>
 257           <td class="paramtype">&#160;</td>
 258           <td class="paramname">idx&#160;</td>
 259         </tr>
 260         <tr>
 261           <td></td>
 262           <td>)</td>
 263           <td></td><td></td>
 264         </tr>
 265       </table>
 266 </div><div class="memdoc">
 267 <b>Value:</b><div class="fragment"><div class="line">{                                                                  \</div><div class="line">        int8 val = vload8(0, (__global <span class="keywordtype">int</span> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(src, 0, idx - 3)); \</div><div class="line">        g += val * (int8)direction##idx;                               \</div><div class="line">    }</div><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#l00201">helpers.h:201</a></div></div>
 268 </div><!-- fragment -->
 269 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00392">392</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 270
 271 </div>
 272 </div>
 273 <a class="anchor" id="a7f602251e0a1f8710f8aab3aef09a36b"></a>
 274 <div class="memitem">
 275 <div class="memproto">
 276       <table class="memname">
 277         <tr>
 278           <td class="memname">#define SOBEL1x7</td>
 279           <td>(</td>
 280           <td class="paramtype">&#160;</td>
 281           <td class="paramname">ptr, </td>
 282         </tr>
 283         <tr>
 284           <td class="paramkey"></td>
 285           <td></td>
 286           <td class="paramtype">&#160;</td>
 287           <td class="paramname">gx, </td>
 288         </tr>
 289         <tr>
 290           <td class="paramkey"></td>
 291           <td></td>
 292           <td class="paramtype">&#160;</td>
 293           <td class="paramname">gy&#160;</td>
 294         </tr>
 295         <tr>
 296           <td></td>
 297           <td>)</td>
 298           <td></td><td></td>
 299         </tr>
 300       </table>
 301 </div><div class="memdoc">
 302 <b>Value:</b><div class="fragment"><div class="line"><a class="code" href="sobel__filter_8cl.xhtml#ad40297671e8a51899c6114386492006b">SOBEL1x1_HOR</a>(ptr, gx, gy, 0)                     <a class="code" href="sobel__filter_8cl.xhtml#ad40297671e8a51899c6114386492006b">\</a></div><div class="line"><a class="code" href="sobel__filter_8cl.xhtml#ad40297671e8a51899c6114386492006b">    SOBEL1x1_HOR</a>(ptr, gx, gy, 1)                 <a class="code" href="sobel__filter_8cl.xhtml#ad40297671e8a51899c6114386492006b">\</a></div><div class="line"><a class="code" href="sobel__filter_8cl.xhtml#ad40297671e8a51899c6114386492006b">    SOBEL1x1_HOR</a>(ptr, gx, gy, 2)             <a class="code" href="sobel__filter_8cl.xhtml#ad40297671e8a51899c6114386492006b">\</a></div><div class="line"><a class="code" href="sobel__filter_8cl.xhtml#ad40297671e8a51899c6114386492006b">    SOBEL1x1_HOR</a>(ptr, gx, gy, 3)         <a class="code" href="sobel__filter_8cl.xhtml#ad40297671e8a51899c6114386492006b">\</a></div><div class="line"><a class="code" href="sobel__filter_8cl.xhtml#ad40297671e8a51899c6114386492006b">    SOBEL1x1_HOR</a>(ptr, gx, gy, 4)     <a class="code" href="sobel__filter_8cl.xhtml#ad40297671e8a51899c6114386492006b">\</a></div><div class="line"><a class="code" href="sobel__filter_8cl.xhtml#ad40297671e8a51899c6114386492006b">    SOBEL1x1_HOR</a>(ptr, gx, gy, 5) <a class="code" href="sobel__filter_8cl.xhtml#ad40297671e8a51899c6114386492006b">\</a></div><div class="line"><a class="code" href="sobel__filter_8cl.xhtml#ad40297671e8a51899c6114386492006b">    SOBEL1x1_HOR</a>(ptr, gx, gy, 6)</div><div class="ttc" id="sobel__filter_8cl_xhtml_ad40297671e8a51899c6114386492006b"><div class="ttname"><a href="sobel__filter_8cl.xhtml#ad40297671e8a51899c6114386492006b">SOBEL1x1_HOR</a></div><div class="ttdeci">#define SOBEL1x1_HOR(src, gx, gy, idx)</div><div class="ttdef"><b>Definition:</b> <a href="sobel__filter_8cl_source.xhtml#l00384">sobel_filter.cl:384</a></div></div>
 303 </div><!-- fragment -->
 304 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00399">399</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 305
 306 <p>Referenced by <a class="el" href="sobel__filter_8cl_source.xhtml#l00442">sobel_separable1x7()</a>.</p>
 307
 308 </div>
 309 </div>
 310 <a class="anchor" id="a59f291bf2b268f9b850fa81a3fbf776a"></a>
 311 <div class="memitem">
 312 <div class="memproto">
 313       <table class="memname">
 314         <tr>
 315           <td class="memname">#define SOBEL7x1</td>
 316           <td>(</td>
 317           <td class="paramtype">&#160;</td>
 318           <td class="paramname">ptr, </td>
 319         </tr>
 320         <tr>
 321           <td class="paramkey"></td>
 322           <td></td>
 323           <td class="paramtype">&#160;</td>
 324           <td class="paramname">g, </td>
 325         </tr>
 326         <tr>
 327           <td class="paramkey"></td>
 328           <td></td>
 329           <td class="paramtype">&#160;</td>
 330           <td class="paramname">direction&#160;</td>
 331         </tr>
 332         <tr>
 333           <td></td>
 334           <td>)</td>
 335           <td></td><td></td>
 336         </tr>
 337       </table>
 338 </div><div class="memdoc">
 339 <b>Value:</b><div class="fragment"><div class="line"><a class="code" href="sobel__filter_8cl.xhtml#a400b86850d6a242a7f48804a097c6403">SOBEL1x1_VERT</a>(ptr, g, direction, 0)                     <a class="code" href="sobel__filter_8cl.xhtml#a400b86850d6a242a7f48804a097c6403">\</a></div><div class="line"><a class="code" href="sobel__filter_8cl.xhtml#a400b86850d6a242a7f48804a097c6403">    SOBEL1x1_VERT</a>(ptr, g, direction, 1)                 <a class="code" href="sobel__filter_8cl.xhtml#a400b86850d6a242a7f48804a097c6403">\</a></div><div class="line"><a class="code" href="sobel__filter_8cl.xhtml#a400b86850d6a242a7f48804a097c6403">    SOBEL1x1_VERT</a>(ptr, g, direction, 2)             <a class="code" href="sobel__filter_8cl.xhtml#a400b86850d6a242a7f48804a097c6403">\</a></div><div class="line"><a class="code" href="sobel__filter_8cl.xhtml#a400b86850d6a242a7f48804a097c6403">    SOBEL1x1_VERT</a>(ptr, g, direction, 3)         <a class="code" href="sobel__filter_8cl.xhtml#a400b86850d6a242a7f48804a097c6403">\</a></div><div class="line"><a class="code" href="sobel__filter_8cl.xhtml#a400b86850d6a242a7f48804a097c6403">    SOBEL1x1_VERT</a>(ptr, g, direction, 4)     <a class="code" href="sobel__filter_8cl.xhtml#a400b86850d6a242a7f48804a097c6403">\</a></div><div class="line"><a class="code" href="sobel__filter_8cl.xhtml#a400b86850d6a242a7f48804a097c6403">    SOBEL1x1_VERT</a>(ptr, g, direction, 5) <a class="code" href="sobel__filter_8cl.xhtml#a400b86850d6a242a7f48804a097c6403">\</a></div><div class="line"><a class="code" href="sobel__filter_8cl.xhtml#a400b86850d6a242a7f48804a097c6403">    SOBEL1x1_VERT</a>(ptr, g, direction, 6)</div><div class="ttc" id="sobel__filter_8cl_xhtml_a400b86850d6a242a7f48804a097c6403"><div class="ttname"><a href="sobel__filter_8cl.xhtml#a400b86850d6a242a7f48804a097c6403">SOBEL1x1_VERT</a></div><div class="ttdeci">#define SOBEL1x1_VERT(src, g, direction, idx)</div><div class="ttdef"><b>Definition:</b> <a href="sobel__filter_8cl_source.xhtml#l00392">sobel_filter.cl:392</a></div></div>
 340 </div><!-- fragment -->
 341 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00409">409</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 342
 343 <p>Referenced by <a class="el" href="sobel__filter_8cl_source.xhtml#l00506">sobel_separable7x1()</a>.</p>
 344
 345 </div>
 346 </div>
 347 <a class="anchor" id="a8476f4a8de2c191433342c9ce896986a"></a>
 348 <div class="memitem">
 349 <div class="memproto">
 350       <table class="memname">
 351         <tr>
 352           <td class="memname">#define X0&#160;&#160;&#160;-1</td>
 353         </tr>
 354       </table>
 355 </div><div class="memdoc">
 356
 357 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00366">366</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 358
 359 </div>
 360 </div>
 361 <a class="anchor" id="a1964818ccd90a6173ea48cecb652feeb"></a>
 362 <div class="memitem">
 363 <div class="memproto">
 364       <table class="memname">
 365         <tr>
 366           <td class="memname">#define X1&#160;&#160;&#160;-4</td>
 367         </tr>
 368       </table>
 369 </div><div class="memdoc">
 370
 371 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00367">367</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 372
 373 </div>
 374 </div>
 375 <a class="anchor" id="a79ae03a0214cb30e57b9e8835f2a0019"></a>
 376 <div class="memitem">
 377 <div class="memproto">
 378       <table class="memname">
 379         <tr>
 380           <td class="memname">#define X2&#160;&#160;&#160;-5</td>
 381         </tr>
 382       </table>
 383 </div><div class="memdoc">
 384
 385 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00368">368</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 386
 387 </div>
 388 </div>
 389 <a class="anchor" id="adb6fd3d004959525c6a684b82ef50860"></a>
 390 <div class="memitem">
 391 <div class="memproto">
 392       <table class="memname">
 393         <tr>
 394           <td class="memname">#define X3&#160;&#160;&#160;0</td>
 395         </tr>
 396       </table>
 397 </div><div class="memdoc">
 398
 399 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00369">369</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 400
 401 </div>
 402 </div>
 403 <a class="anchor" id="a0f79fa7387c308a89a30682d905aa40a"></a>
 404 <div class="memitem">
 405 <div class="memproto">
 406       <table class="memname">
 407         <tr>
 408           <td class="memname">#define X4&#160;&#160;&#160;5</td>
 409         </tr>
 410       </table>
 411 </div><div class="memdoc">
 412
 413 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00370">370</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 414
 415 </div>
 416 </div>
 417 <a class="anchor" id="a921884524c9038883b25f03d3bd1b078"></a>
 418 <div class="memitem">
 419 <div class="memproto">
 420       <table class="memname">
 421         <tr>
 422           <td class="memname">#define X5&#160;&#160;&#160;4</td>
 423         </tr>
 424       </table>
 425 </div><div class="memdoc">
 426
 427 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00371">371</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 428
 429 </div>
 430 </div>
 431 <a class="anchor" id="a0e11bba5150b8ae2a8831f6f4532e352"></a>
 432 <div class="memitem">
 433 <div class="memproto">
 434       <table class="memname">
 435         <tr>
 436           <td class="memname">#define X6&#160;&#160;&#160;1</td>
 437         </tr>
 438       </table>
 439 </div><div class="memdoc">
 440
 441 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00372">372</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 442
 443 </div>
 444 </div>
 445 <a class="anchor" id="a0b0dcdd1ffa302474e907d3d7ad9dbfe"></a>
 446 <div class="memitem">
 447 <div class="memproto">
 448       <table class="memname">
 449         <tr>
 450           <td class="memname">#define Y0&#160;&#160;&#160;1</td>
 451         </tr>
 452       </table>
 453 </div><div class="memdoc">
 454
 455 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00375">375</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 456
 457 </div>
 458 </div>
 459 <a class="anchor" id="a294189cdea31dda8faf609b9b3e2000a"></a>
 460 <div class="memitem">
 461 <div class="memproto">
 462       <table class="memname">
 463         <tr>
 464           <td class="memname">#define Y1&#160;&#160;&#160;6</td>
 465         </tr>
 466       </table>
 467 </div><div class="memdoc">
 468
 469 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00376">376</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 470
 471 </div>
 472 </div>
 473 <a class="anchor" id="a3128cc29e366777d66d8b049451ca8a0"></a>
 474 <div class="memitem">
 475 <div class="memproto">
 476       <table class="memname">
 477         <tr>
 478           <td class="memname">#define Y2&#160;&#160;&#160;15</td>
 479         </tr>
 480       </table>
 481 </div><div class="memdoc">
 482
 483 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00377">377</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 484
 485 </div>
 486 </div>
 487 <a class="anchor" id="a676acf01638364a90adf5d09d2a215bf"></a>
 488 <div class="memitem">
 489 <div class="memproto">
 490       <table class="memname">
 491         <tr>
 492           <td class="memname">#define Y3&#160;&#160;&#160;20</td>
 493         </tr>
 494       </table>
 495 </div><div class="memdoc">
 496
 497 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00378">378</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 498
 499 </div>
 500 </div>
 501 <a class="anchor" id="a5a8e903c2373c4d65724c79cdea8b3d9"></a>
 502 <div class="memitem">
 503 <div class="memproto">
 504       <table class="memname">
 505         <tr>
 506           <td class="memname">#define Y4&#160;&#160;&#160;15</td>
 507         </tr>
 508       </table>
 509 </div><div class="memdoc">
 510
 511 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00379">379</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 512
 513 </div>
 514 </div>
 515 <a class="anchor" id="a770267173956bf918cf3ca1247b6de12"></a>
 516 <div class="memitem">
 517 <div class="memproto">
 518       <table class="memname">
 519         <tr>
 520           <td class="memname">#define Y5&#160;&#160;&#160;6</td>
 521         </tr>
 522       </table>
 523 </div><div class="memdoc">
 524
 525 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00380">380</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 526
 527 </div>
 528 </div>
 529 <a class="anchor" id="abcdba0de8723fe6f2d2eb284d7e98a41"></a>
 530 <div class="memitem">
 531 <div class="memproto">
 532       <table class="memname">
 533         <tr>
 534           <td class="memname">#define Y6&#160;&#160;&#160;1</td>
 535         </tr>
 536       </table>
 537 </div><div class="memdoc">
 538
 539 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00381">381</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 540
 541 </div>
 542 </div>
 543 <h2 class="groupheader">Function Documentation</h2>
 544 <a class="anchor" id="a4fac2cb52458aa4666af5b521d2a3910"></a>
 545 <div class="memitem">
 546 <div class="memproto">
 547       <table class="memname">
 548         <tr>
 549           <td class="memname">short16 sobel1x5 </td>
 550           <td>(</td>
 551           <td class="paramtype"><a class="el" href="struct_image.xhtml">Image</a> *&#160;</td>
 552           <td class="paramname"><em>src</em>, </td>
 553         </tr>
 554         <tr>
 555           <td class="paramkey"></td>
 556           <td></td>
 557           <td class="paramtype">const short&#160;</td>
 558           <td class="paramname"><em>left1_coeff_gx</em>, </td>
 559         </tr>
 560         <tr>
 561           <td class="paramkey"></td>
 562           <td></td>
 563           <td class="paramtype">const short&#160;</td>
 564           <td class="paramname"><em>left2_coeff_gx</em>, </td>
 565         </tr>
 566         <tr>
 567           <td class="paramkey"></td>
 568           <td></td>
 569           <td class="paramtype">const short&#160;</td>
 570           <td class="paramname"><em>middle_coeff_gx</em>, </td>
 571         </tr>
 572         <tr>
 573           <td class="paramkey"></td>
 574           <td></td>
 575           <td class="paramtype">const short&#160;</td>
 576           <td class="paramname"><em>right1_coeff_gx</em>, </td>
 577         </tr>
 578         <tr>
 579           <td class="paramkey"></td>
 580           <td></td>
 581           <td class="paramtype">const short&#160;</td>
 582           <td class="paramname"><em>right2_coeff_gx</em>, </td>
 583         </tr>
 584         <tr>
 585           <td class="paramkey"></td>
 586           <td></td>
 587           <td class="paramtype">const short&#160;</td>
 588           <td class="paramname"><em>left1_coeff_gy</em>, </td>
 589         </tr>
 590         <tr>
 591           <td class="paramkey"></td>
 592           <td></td>
 593           <td class="paramtype">const short&#160;</td>
 594           <td class="paramname"><em>left2_coeff_gy</em>, </td>
 595         </tr>
 596         <tr>
 597           <td class="paramkey"></td>
 598           <td></td>
 599           <td class="paramtype">const short&#160;</td>
 600           <td class="paramname"><em>middle_coeff_gy</em>, </td>
 601         </tr>
 602         <tr>
 603           <td class="paramkey"></td>
 604           <td></td>
 605           <td class="paramtype">const short&#160;</td>
 606           <td class="paramname"><em>right1_coeff_gy</em>, </td>
 607         </tr>
 608         <tr>
 609           <td class="paramkey"></td>
 610           <td></td>
 611           <td class="paramtype">const short&#160;</td>
 612           <td class="paramname"><em>right2_coeff_gy</em>&#160;</td>
 613         </tr>
 614         <tr>
 615           <td></td>
 616           <td>)</td>
 617           <td></td><td></td>
 618         </tr>
 619       </table>
 620 </div><div class="memdoc">
 621
 622 <p>Compute a 1D horizontal sobel filter 1x5 for 8 bytes assuming the input is made of 1 channel of 1 byte (i.e 8 pixels). </p>
 623 <dl class="params"><dt>Parameters</dt><dd>
 624   <table class="params">
 625     <tr><td class="paramdir">[in]</td><td class="paramname">src</td><td>Pointer to source image. </td></tr>
 626     <tr><td class="paramdir">[in]</td><td class="paramname">left1_coeff_gx</td><td>Weight of the most left pixel for gx </td></tr>
 627     <tr><td class="paramdir">[in]</td><td class="paramname">left2_coeff_gx</td><td>Weight of the left pixel for gx </td></tr>
 628     <tr><td class="paramdir">[in]</td><td class="paramname">middle_coeff_gx</td><td>Weight of the middle pixel for gx </td></tr>
 629     <tr><td class="paramdir">[in]</td><td class="paramname">right1_coeff_gx</td><td>Weight of the right pixel for gx </td></tr>
 630     <tr><td class="paramdir">[in]</td><td class="paramname">right2_coeff_gx</td><td>Weight of the most right pixel for gx </td></tr>
 631     <tr><td class="paramdir">[in]</td><td class="paramname">left1_coeff_gy</td><td>Weight of the most left pixel for gy </td></tr>
 632     <tr><td class="paramdir">[in]</td><td class="paramname">left2_coeff_gy</td><td>Weight of the left pixel for gy </td></tr>
 633     <tr><td class="paramdir">[in]</td><td class="paramname">middle_coeff_gy</td><td>Weight of the middle pixel for gy </td></tr>
 634     <tr><td class="paramdir">[in]</td><td class="paramname">right1_coeff_gy</td><td>Weight of the right pixel for gy </td></tr>
 635     <tr><td class="paramdir">[in]</td><td class="paramname">right2_coeff_gy</td><td>Weight of the most right pixel for gy</td></tr>
 636   </table>
 637   </dd>
 638 </dl>
 639 <dl class="section return"><dt>Returns</dt><dd>a short16 containing short8 gx and short8 gy values. </dd></dl>
 640
 641 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00154">154</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 642
 643 <p>References <a class="el" href="helpers_8h_source.xhtml#l00201">offset()</a>.</p>
 644
 645 <p>Referenced by <a class="el" href="sobel__filter_8cl_source.xhtml#l00259">sobel_separable1x5()</a>.</p>
 646 <div class="fragment"><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;{</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;    uchar16 temp = vload16(0, <a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(src, -2, 0));</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;    short8  gx   = 0;</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;    short8  gy   = 0;</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;    short8  val;</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;    val = convert_short8(temp.s01234567);</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;    gx += val * (short8)left1_coeff_gx;</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;    gy += val * (short8)left1_coeff_gy;</div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;    val = convert_short8(temp.s12345678);</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;    gx += val * (short8)left2_coeff_gx;</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;    gy += val * (short8)left2_coeff_gy;</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;    val = convert_short8(temp.s23456789);</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;    gx += val * (short8)middle_coeff_gx;</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;    gy += val * (short8)middle_coeff_gy;</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;    val = convert_short8(temp.s3456789a);</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;    gx += val * (short8)right1_coeff_gx;</div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;    gy += val * (short8)right1_coeff_gy;</div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;    val = convert_short8(temp.s456789ab);</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;    gx += val * (short8)right2_coeff_gx;</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;    gy += val * (short8)right2_coeff_gy;</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;    <span class="keywordflow">return</span> (short16)(gx, gy);</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;}</div><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#l00201">helpers.h:201</a></div></div>
 647 </div><!-- fragment -->
 648 </div>
 649 </div>
 650 <a class="anchor" id="ad48e3b9dda20b039199eaea842350975"></a>
 651 <div class="memitem">
 652 <div class="memproto">
 653       <table class="memname">
 654         <tr>
 655           <td class="memname">__kernel void sobel3x3 </td>
 656           <td>(</td>
 657           <td class="paramtype">__global uchar *&#160;</td>
 658           <td class="paramname"><em>src_ptr</em>, </td>
 659         </tr>
 660         <tr>
 661           <td class="paramkey"></td>
 662           <td></td>
 663           <td class="paramtype">uint&#160;</td>
 664           <td class="paramname"><em>src_stride_x</em>, </td>
 665         </tr>
 666         <tr>
 667           <td class="paramkey"></td>
 668           <td></td>
 669           <td class="paramtype">uint&#160;</td>
 670           <td class="paramname"><em>src_step_x</em>, </td>
 671         </tr>
 672         <tr>
 673           <td class="paramkey"></td>
 674           <td></td>
 675           <td class="paramtype">uint&#160;</td>
 676           <td class="paramname"><em>src_stride_y</em>, </td>
 677         </tr>
 678         <tr>
 679           <td class="paramkey"></td>
 680           <td></td>
 681           <td class="paramtype">uint&#160;</td>
 682           <td class="paramname"><em>src_step_y</em>, </td>
 683         </tr>
 684         <tr>
 685           <td class="paramkey"></td>
 686           <td></td>
 687           <td class="paramtype">uint&#160;</td>
 688           <td class="paramname"><em>src_offset_first_element_in_bytes</em>, </td>
 689         </tr>
 690         <tr>
 691           <td class="paramkey"></td>
 692           <td></td>
 693           <td class="paramtype">__global uchar *&#160;</td>
 694           <td class="paramname"><em>dst_gx_ptr</em>, </td>
 695         </tr>
 696         <tr>
 697           <td class="paramkey"></td>
 698           <td></td>
 699           <td class="paramtype">uint&#160;</td>
 700           <td class="paramname"><em>dst_gx_stride_x</em>, </td>
 701         </tr>
 702         <tr>
 703           <td class="paramkey"></td>
 704           <td></td>
 705           <td class="paramtype">uint&#160;</td>
 706           <td class="paramname"><em>dst_gx_step_x</em>, </td>
 707         </tr>
 708         <tr>
 709           <td class="paramkey"></td>
 710           <td></td>
 711           <td class="paramtype">uint&#160;</td>
 712           <td class="paramname"><em>dst_gx_stride_y</em>, </td>
 713         </tr>
 714         <tr>
 715           <td class="paramkey"></td>
 716           <td></td>
 717           <td class="paramtype">uint&#160;</td>
 718           <td class="paramname"><em>dst_gx_step_y</em>, </td>
 719         </tr>
 720         <tr>
 721           <td class="paramkey"></td>
 722           <td></td>
 723           <td class="paramtype">uint&#160;</td>
 724           <td class="paramname"><em>dst_gx_offset_first_element_in_bytes</em>, </td>
 725         </tr>
 726         <tr>
 727           <td class="paramkey"></td>
 728           <td></td>
 729           <td class="paramtype">__global uchar *&#160;</td>
 730           <td class="paramname"><em>dst_gy_ptr</em>, </td>
 731         </tr>
 732         <tr>
 733           <td class="paramkey"></td>
 734           <td></td>
 735           <td class="paramtype">uint&#160;</td>
 736           <td class="paramname"><em>dst_gy_stride_x</em>, </td>
 737         </tr>
 738         <tr>
 739           <td class="paramkey"></td>
 740           <td></td>
 741           <td class="paramtype">uint&#160;</td>
 742           <td class="paramname"><em>dst_gy_step_x</em>, </td>
 743         </tr>
 744         <tr>
 745           <td class="paramkey"></td>
 746           <td></td>
 747           <td class="paramtype">uint&#160;</td>
 748           <td class="paramname"><em>dst_gy_stride_y</em>, </td>
 749         </tr>
 750         <tr>
 751           <td class="paramkey"></td>
 752           <td></td>
 753           <td class="paramtype">uint&#160;</td>
 754           <td class="paramname"><em>dst_gy_step_y</em>, </td>
 755         </tr>
 756         <tr>
 757           <td class="paramkey"></td>
 758           <td></td>
 759           <td class="paramtype">uint&#160;</td>
 760           <td class="paramname"><em>dst_gy_offset_first_element_in_bytes</em>&#160;</td>
 761         </tr>
 762         <tr>
 763           <td></td>
 764           <td>)</td>
 765           <td></td><td></td>
 766         </tr>
 767       </table>
 768 </div><div class="memdoc">
 769
 770 <p>This OpenCL kernel that computes a Sobel3x3 filter. </p>
 771 <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>
 772 <dl class="params"><dt>Parameters</dt><dd>
 773   <table class="params">
 774     <tr><td class="paramdir">[in]</td><td class="paramname">src_ptr</td><td>Pointer to the source image. Supported data types: U8 </td></tr>
 775     <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>
 776     <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>
 777     <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>
 778     <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>
 779     <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>
 780     <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>
 781     <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>
 782     <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>
 783     <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>
 784     <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>
 785     <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>
 786     <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>
 787     <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>
 788     <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>
 789     <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>
 790     <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>
 791     <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>
 792   </table>
 793   </dd>
 794 </dl>
 795
 796 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00054">54</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 797
 798 <p>References <a class="el" href="helpers_8h_source.xhtml#l00073">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="helpers_8h_source.xhtml#l00201">offset()</a>, and <a class="el" href="helpers_8h_source.xhtml#l00097">Image::ptr</a>.</p>
 799 <div class="fragment"><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;{</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    <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><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="preprocessor">#ifdef GRAD_X</span></div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> dst_gx = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(dst_gx);</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="preprocessor">#ifdef GRAD_Y</span></div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> dst_gy = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(dst_gy);</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    <span class="comment">// Output pixels</span></div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="preprocessor">#ifdef GRAD_X</span></div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    short8 gx = (short8)0;</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class="preprocessor">#ifdef GRAD_Y</span></div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    short8 gy = (short8)0;</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;    <span class="comment">// Row0</span></div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    uchar16 temp   = vload16(0, <a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&amp;src, -1, -1));</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    short8  left   = convert_short8(temp.s01234567);</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    short8  middle = convert_short8(temp.s12345678);</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    short8  right  = convert_short8(temp.s23456789);</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="preprocessor">#ifdef GRAD_X</span></div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;    gx += left * (short8)(-1);</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    gx += right * (short8)(+1);</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="preprocessor">#ifdef GRAD_Y</span></div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    gy += left * (short8)(-1);</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;    gy += middle * (short8)(-2);</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    gy += right * (short8)(-1);</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    <span class="comment">// Row1</span></div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;    temp  = vload16(0, <a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&amp;src, -1, 0));</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;    left  = convert_short8(temp.s01234567);</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;    right = convert_short8(temp.s23456789);</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;<span class="preprocessor">#ifdef GRAD_X</span></div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    gx += left * (short8)(-2);</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;    gx += right * (short8)(+2);</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;<span class="preprocessor">#endif</span></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="comment">// Row2</span></div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;    temp   = vload16(0, <a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&amp;src, -1, 1));</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;    left   = convert_short8(temp.s01234567);</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;    middle = convert_short8(temp.s12345678);</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    right  = convert_short8(temp.s23456789);</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;<span class="preprocessor">#ifdef GRAD_X</span></div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;    gx += left * (short8)(-1);</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;    gx += right * (short8)(+1);</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;<span class="preprocessor">#ifdef GRAD_Y</span></div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;    gy += left * (short8)(+1);</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    gy += middle * (short8)(+2);</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;    gy += right * (short8)(+1);</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;    <span class="comment">// Store results</span></div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;<span class="preprocessor">#ifdef GRAD_X</span></div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;    vstore8(gx, 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="l00124"></a><span class="lineno">  124</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;<span class="preprocessor">#ifdef GRAD_Y</span></div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;    vstore8(gy, 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="l00127"></a><span class="lineno">  127</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;}</div><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#l00201">helpers.h:201</a></div></div>
 800 <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#l00073">helpers.h:73</a></div></div>
 801 <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#l00095">helpers.h:95</a></div></div>
 802 <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#l00097">helpers.h:97</a></div></div>
 803 </div><!-- fragment -->
 804 </div>
 805 </div>
 806 <a class="anchor" id="a1cfe58175749124762fe0dea315d3c21"></a>
 807 <div class="memitem">
 808 <div class="memproto">
 809       <table class="memname">
 810         <tr>
 811           <td class="memname">short8 sobel5x1 </td>
 812           <td>(</td>
 813           <td class="paramtype"><a class="el" href="struct_image.xhtml">Image</a> *&#160;</td>
 814           <td class="paramname"><em>src</em>, </td>
 815         </tr>
 816         <tr>
 817           <td class="paramkey"></td>
 818           <td></td>
 819           <td class="paramtype">const short&#160;</td>
 820           <td class="paramname"><em>up1_coeff</em>, </td>
 821         </tr>
 822         <tr>
 823           <td class="paramkey"></td>
 824           <td></td>
 825           <td class="paramtype">const short&#160;</td>
 826           <td class="paramname"><em>up2_coeff</em>, </td>
 827         </tr>
 828         <tr>
 829           <td class="paramkey"></td>
 830           <td></td>
 831           <td class="paramtype">const short&#160;</td>
 832           <td class="paramname"><em>middle_coeff</em>, </td>
 833         </tr>
 834         <tr>
 835           <td class="paramkey"></td>
 836           <td></td>
 837           <td class="paramtype">const short&#160;</td>
 838           <td class="paramname"><em>down1_coeff</em>, </td>
 839         </tr>
 840         <tr>
 841           <td class="paramkey"></td>
 842           <td></td>
 843           <td class="paramtype">const short&#160;</td>
 844           <td class="paramname"><em>down2_coeff</em>&#160;</td>
 845         </tr>
 846         <tr>
 847           <td></td>
 848           <td>)</td>
 849           <td></td><td></td>
 850         </tr>
 851       </table>
 852 </div><div class="memdoc">
 853
 854 <p>Compute a 1D vertical sobel filter 5x1 for 8 bytes assuming the input is made of 1 channel of 1 byte (i.e 8 pixels). </p>
 855 <dl class="params"><dt>Parameters</dt><dd>
 856   <table class="params">
 857     <tr><td class="paramdir">[in]</td><td class="paramname">src</td><td>Pointer to source image. </td></tr>
 858     <tr><td class="paramdir">[in]</td><td class="paramname">up1_coeff</td><td>Weight of the most up pixel </td></tr>
 859     <tr><td class="paramdir">[in]</td><td class="paramname">up2_coeff</td><td>Weight of the up pixel </td></tr>
 860     <tr><td class="paramdir">[in]</td><td class="paramname">middle_coeff</td><td>Weight of the middle pixel </td></tr>
 861     <tr><td class="paramdir">[in]</td><td class="paramname">down1_coeff</td><td>Weight of the down pixel </td></tr>
 862     <tr><td class="paramdir">[in]</td><td class="paramname">down2_coeff</td><td>Weight of the most down pixel</td></tr>
 863   </table>
 864   </dd>
 865 </dl>
 866 <dl class="section return"><dt>Returns</dt><dd>a short8 containing 8 convoluted values. </dd></dl>
 867
 868 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00206">206</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
 869
 870 <p>References <a class="el" href="helpers_8h_source.xhtml#l00201">offset()</a>.</p>
 871
 872 <p>Referenced by <a class="el" href="sobel__filter_8cl_source.xhtml#l00325">sobel_separable5x1()</a>.</p>
 873 <div class="fragment"><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;{</div><div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;    short8 val;</div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;    short8 out = (short8)0;</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;    val = vload8(0, (__global <span class="keywordtype">short</span> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(src, 0, -2));</div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;    out += val * (short8)up1_coeff;</div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;</div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;    val = vload8(0, (__global <span class="keywordtype">short</span> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(src, 0, -1));</div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;    out += val * (short8)up2_coeff;</div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;</div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    val = vload8(0, (__global <span class="keywordtype">short</span> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(src, 0, 0));</div><div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;    out += val * (short8)middle_coeff;</div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;</div><div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;    val = vload8(0, (__global <span class="keywordtype">short</span> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(src, 0, 1));</div><div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;    out += val * (short8)down1_coeff;</div><div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;</div><div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;    val = vload8(0, (__global <span class="keywordtype">short</span> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(src, 0, 2));</div><div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;    out += val * (short8)down2_coeff;</div><div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;</div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;    <span class="keywordflow">return</span> (short8)(out);</div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;}</div><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#l00201">helpers.h:201</a></div></div>
 874 </div><!-- fragment -->
 875 </div>
 876 </div>
 877 <a class="anchor" id="a7a74e414f0e90638939a7a0506576625"></a>
 878 <div class="memitem">
 879 <div class="memproto">
 880       <table class="memname">
 881         <tr>
 882           <td class="memname">__kernel void sobel_separable1x5 </td>
 883           <td>(</td>
 884           <td class="paramtype">__global uchar *&#160;</td>
 885           <td class="paramname"><em>src_ptr</em>, </td>
 886         </tr>
 887         <tr>
 888           <td class="paramkey"></td>
 889           <td></td>
 890           <td class="paramtype">uint&#160;</td>
 891           <td class="paramname"><em>src_stride_x</em>, </td>
 892         </tr>
 893         <tr>
 894           <td class="paramkey"></td>
 895           <td></td>
 896           <td class="paramtype">uint&#160;</td>
 897           <td class="paramname"><em>src_step_x</em>, </td>
 898         </tr>
 899         <tr>
 900           <td class="paramkey"></td>
 901           <td></td>
 902           <td class="paramtype">uint&#160;</td>
 903           <td class="paramname"><em>src_stride_y</em>, </td>
 904         </tr>
 905         <tr>
 906           <td class="paramkey"></td>
 907           <td></td>
 908           <td class="paramtype">uint&#160;</td>
 909           <td class="paramname"><em>src_step_y</em>, </td>
 910         </tr>
 911         <tr>
 912           <td class="paramkey"></td>
 913           <td></td>
 914           <td class="paramtype">uint&#160;</td>
 915           <td class="paramname"><em>src_offset_first_element_in_bytes</em>, </td>
 916         </tr>
 917         <tr>
 918           <td class="paramkey"></td>
 919           <td></td>
 920           <td class="paramtype">__global uchar *&#160;</td>
 921           <td class="paramname"><em>dst_gx_ptr</em>, </td>
 922         </tr>
 923         <tr>
 924           <td class="paramkey"></td>
 925           <td></td>
 926           <td class="paramtype">uint&#160;</td>
 927           <td class="paramname"><em>dst_gx_stride_x</em>, </td>
 928         </tr>
 929         <tr>
 930           <td class="paramkey"></td>
 931           <td></td>
 932           <td class="paramtype">uint&#160;</td>
 933           <td class="paramname"><em>dst_gx_step_x</em>, </td>
 934         </tr>
 935         <tr>
 936           <td class="paramkey"></td>
 937           <td></td>
 938           <td class="paramtype">uint&#160;</td>
 939           <td class="paramname"><em>dst_gx_stride_y</em>, </td>
 940         </tr>
 941         <tr>
 942           <td class="paramkey"></td>
 943           <td></td>
 944           <td class="paramtype">uint&#160;</td>
 945           <td class="paramname"><em>dst_gx_step_y</em>, </td>
 946         </tr>
 947         <tr>
 948           <td class="paramkey"></td>
 949           <td></td>
 950           <td class="paramtype">uint&#160;</td>
 951           <td class="paramname"><em>dst_gx_offset_first_element_in_bytes</em>, </td>
 952         </tr>
 953         <tr>
 954           <td class="paramkey"></td>
 955           <td></td>
 956           <td class="paramtype">__global uchar *&#160;</td>
 957           <td class="paramname"><em>dst_gy_ptr</em>, </td>
 958         </tr>
 959         <tr>
 960           <td class="paramkey"></td>
 961           <td></td>
 962           <td class="paramtype">uint&#160;</td>
 963           <td class="paramname"><em>dst_gy_stride_x</em>, </td>
 964         </tr>
 965         <tr>
 966           <td class="paramkey"></td>
 967           <td></td>
 968           <td class="paramtype">uint&#160;</td>
 969           <td class="paramname"><em>dst_gy_step_x</em>, </td>
 970         </tr>
 971         <tr>
 972           <td class="paramkey"></td>
 973           <td></td>
 974           <td class="paramtype">uint&#160;</td>
 975           <td class="paramname"><em>dst_gy_stride_y</em>, </td>
 976         </tr>
 977         <tr>
 978           <td class="paramkey"></td>
 979           <td></td>
 980           <td class="paramtype">uint&#160;</td>
 981           <td class="paramname"><em>dst_gy_step_y</em>, </td>
 982         </tr>
 983         <tr>
 984           <td class="paramkey"></td>
 985           <td></td>
 986           <td class="paramtype">uint&#160;</td>
 987           <td class="paramname"><em>dst_gy_offset_first_element_in_bytes</em>&#160;</td>
 988         </tr>
 989         <tr>
 990           <td></td>
 991           <td>)</td>
 992           <td></td><td></td>
 993         </tr>
 994       </table>
 995 </div><div class="memdoc">
 996
 997 <p>Apply a 1x5 sobel matrix to a single channel U8 input image and output two temporary channel S16 images. </p>
 998 <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>
 999 <dl class="params"><dt>Parameters</dt><dd>
1000   <table class="params">
1001     <tr><td class="paramdir">[in]</td><td class="paramname">src_ptr</td><td>Pointer to the source image.. Supported data types: U8 </td></tr>
1002     <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>
1003     <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>
1004     <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>
1005     <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>
1006     <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>
1007     <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>
1008     <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>
1009     <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>
1010     <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>
1011     <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>
1012     <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>
1013     <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>
1014     <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>
1015     <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>
1016     <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>
1017     <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>
1018     <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>
1019   </table>
1020   </dd>
1021 </dl>
1022
1023 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00259">259</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
1024
1025 <p>References <a class="el" href="helpers_8h_source.xhtml#l00073">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="helpers_8h_source.xhtml#l00097">Image::ptr</a>, and <a class="el" href="sobel__filter_8cl_source.xhtml#l00154">sobel1x5()</a>.</p>
1026 <div class="fragment"><div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;{</div><div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;    <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><div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;<span class="preprocessor">#ifdef GRAD_X</span></div><div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> dst_gx = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(dst_gx);</div><div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;<span class="preprocessor">#ifdef GRAD_Y</span></div><div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> dst_gy = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(dst_gy);</div><div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;</div><div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;    <span class="comment">// Output pixels</span></div><div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;    short16 gx_gy = <a class="code" href="sobel__filter_8cl.xhtml#a4fac2cb52458aa4666af5b521d2a3910">sobel1x5</a>(&amp;src,</div><div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;                             -1, -2, 0, 2, 1,</div><div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;                             1, 4, 6, 4, 1);</div><div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;</div><div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;    <span class="comment">// Store result in dst</span></div><div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;<span class="preprocessor">#ifdef GRAD_X</span></div><div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;    vstore8(gx_gy.s01234567, 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="l00287"></a><span class="lineno">  287</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;<span class="preprocessor">#ifdef GRAD_Y</span></div><div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;    vstore8(gx_gy.s89ABCDEF, 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="l00290"></a><span class="lineno">  290</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;}</div><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#l00073">helpers.h:73</a></div></div>
1027 <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#l00095">helpers.h:95</a></div></div>
1028 <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#l00097">helpers.h:97</a></div></div>
1029 <div class="ttc" id="sobel__filter_8cl_xhtml_a4fac2cb52458aa4666af5b521d2a3910"><div class="ttname"><a href="sobel__filter_8cl.xhtml#a4fac2cb52458aa4666af5b521d2a3910">sobel1x5</a></div><div class="ttdeci">short16 sobel1x5(Image *src, const short left1_coeff_gx, const short left2_coeff_gx, const short middle_coeff_gx, const short right1_coeff_gx, const short right2_coeff_gx, const short left1_coeff_gy, const short left2_coeff_gy, const short middle_coeff_gy, const short right1_coeff_gy, const short right2_coeff_gy)</div><div class="ttdoc">Compute a 1D horizontal sobel filter 1x5 for 8 bytes assuming the input is made of 1 channel of 1 byt...</div><div class="ttdef"><b>Definition:</b> <a href="sobel__filter_8cl_source.xhtml#l00154">sobel_filter.cl:154</a></div></div>
1030 </div><!-- fragment -->
1031 </div>
1032 </div>
1033 <a class="anchor" id="ad8be5e69836ab70ac229279a7d7edaf7"></a>
1034 <div class="memitem">
1035 <div class="memproto">
1036       <table class="memname">
1037         <tr>
1038           <td class="memname">__kernel void sobel_separable1x7 </td>
1039           <td>(</td>
1040           <td class="paramtype">__global uchar *&#160;</td>
1041           <td class="paramname"><em>src_ptr</em>, </td>
1042         </tr>
1043         <tr>
1044           <td class="paramkey"></td>
1045           <td></td>
1046           <td class="paramtype">uint&#160;</td>
1047           <td class="paramname"><em>src_stride_x</em>, </td>
1048         </tr>
1049         <tr>
1050           <td class="paramkey"></td>
1051           <td></td>
1052           <td class="paramtype">uint&#160;</td>
1053           <td class="paramname"><em>src_step_x</em>, </td>
1054         </tr>
1055         <tr>
1056           <td class="paramkey"></td>
1057           <td></td>
1058           <td class="paramtype">uint&#160;</td>
1059           <td class="paramname"><em>src_stride_y</em>, </td>
1060         </tr>
1061         <tr>
1062           <td class="paramkey"></td>
1063           <td></td>
1064           <td class="paramtype">uint&#160;</td>
1065           <td class="paramname"><em>src_step_y</em>, </td>
1066         </tr>
1067         <tr>
1068           <td class="paramkey"></td>
1069           <td></td>
1070           <td class="paramtype">uint&#160;</td>
1071           <td class="paramname"><em>src_offset_first_element_in_bytes</em>, </td>
1072         </tr>
1073         <tr>
1074           <td class="paramkey"></td>
1075           <td></td>
1076           <td class="paramtype">__global uchar *&#160;</td>
1077           <td class="paramname"><em>dst_gx_ptr</em>, </td>
1078         </tr>
1079         <tr>
1080           <td class="paramkey"></td>
1081           <td></td>
1082           <td class="paramtype">uint&#160;</td>
1083           <td class="paramname"><em>dst_gx_stride_x</em>, </td>
1084         </tr>
1085         <tr>
1086           <td class="paramkey"></td>
1087           <td></td>
1088           <td class="paramtype">uint&#160;</td>
1089           <td class="paramname"><em>dst_gx_step_x</em>, </td>
1090         </tr>
1091         <tr>
1092           <td class="paramkey"></td>
1093           <td></td>
1094           <td class="paramtype">uint&#160;</td>
1095           <td class="paramname"><em>dst_gx_stride_y</em>, </td>
1096         </tr>
1097         <tr>
1098           <td class="paramkey"></td>
1099           <td></td>
1100           <td class="paramtype">uint&#160;</td>
1101           <td class="paramname"><em>dst_gx_step_y</em>, </td>
1102         </tr>
1103         <tr>
1104           <td class="paramkey"></td>
1105           <td></td>
1106           <td class="paramtype">uint&#160;</td>
1107           <td class="paramname"><em>dst_gx_offset_first_element_in_bytes</em>, </td>
1108         </tr>
1109         <tr>
1110           <td class="paramkey"></td>
1111           <td></td>
1112           <td class="paramtype">__global uchar *&#160;</td>
1113           <td class="paramname"><em>dst_gy_ptr</em>, </td>
1114         </tr>
1115         <tr>
1116           <td class="paramkey"></td>
1117           <td></td>
1118           <td class="paramtype">uint&#160;</td>
1119           <td class="paramname"><em>dst_gy_stride_x</em>, </td>
1120         </tr>
1121         <tr>
1122           <td class="paramkey"></td>
1123           <td></td>
1124           <td class="paramtype">uint&#160;</td>
1125           <td class="paramname"><em>dst_gy_step_x</em>, </td>
1126         </tr>
1127         <tr>
1128           <td class="paramkey"></td>
1129           <td></td>
1130           <td class="paramtype">uint&#160;</td>
1131           <td class="paramname"><em>dst_gy_stride_y</em>, </td>
1132         </tr>
1133         <tr>
1134           <td class="paramkey"></td>
1135           <td></td>
1136           <td class="paramtype">uint&#160;</td>
1137           <td class="paramname"><em>dst_gy_step_y</em>, </td>
1138         </tr>
1139         <tr>
1140           <td class="paramkey"></td>
1141           <td></td>
1142           <td class="paramtype">uint&#160;</td>
1143           <td class="paramname"><em>dst_gy_offset_first_element_in_bytes</em>&#160;</td>
1144         </tr>
1145         <tr>
1146           <td></td>
1147           <td>)</td>
1148           <td></td><td></td>
1149         </tr>
1150       </table>
1151 </div><div class="memdoc">
1152
1153 <p>Apply a 1x7 sobel matrix to a single channel U8 input image and output two temporary channel S16 images and leave the borders undefined. </p>
1154 <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>
1155 <dl class="params"><dt>Parameters</dt><dd>
1156   <table class="params">
1157     <tr><td class="paramdir">[in]</td><td class="paramname">src_ptr</td><td>Pointer to the source image. Supported data types: U8 </td></tr>
1158     <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>
1159     <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>
1160     <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>
1161     <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>
1162     <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>
1163     <tr><td class="paramdir">[out]</td><td class="paramname">dst_gx_ptr</td><td>Pointer to the destination image. Supported data types: S32 </td></tr>
1164     <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>
1165     <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>
1166     <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>
1167     <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>
1168     <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>
1169     <tr><td class="paramdir">[out]</td><td class="paramname">dst_gy_ptr</td><td>Pointer to the destination image. Supported data types: S32 </td></tr>
1170     <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>
1171     <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>
1172     <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>
1173     <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>
1174     <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>
1175   </table>
1176   </dd>
1177 </dl>
1178
1179 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00442">442</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
1180
1181 <p>References <a class="el" href="helpers_8h_source.xhtml#l00073">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="helpers_8h_source.xhtml#l00097">Image::ptr</a>, and <a class="el" href="sobel__filter_8cl_source.xhtml#l00399">SOBEL1x7</a>.</p>
1182 <div class="fragment"><div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;{</div><div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;    <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><div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;<span class="preprocessor">#ifdef GRAD_X</span></div><div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> dst_gx = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(dst_gx);</div><div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;<span class="preprocessor">#ifdef GRAD_Y</span></div><div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> dst_gy = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(dst_gy);</div><div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;    int8 gx = (int8)0;</div><div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;    int8 gy = (int8)0;</div><div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;</div><div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;    <a class="code" href="sobel__filter_8cl.xhtml#a7f602251e0a1f8710f8aab3aef09a36b">SOBEL1x7</a>(&amp;src, gx, gy);</div><div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;</div><div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;    <span class="comment">// Store result in dst</span></div><div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;<span class="preprocessor">#ifdef GRAD_X</span></div><div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;    vstore8(gx, 0, ((__global <span class="keywordtype">int</span> *)dst_gx.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>));</div><div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;<span class="preprocessor">#ifdef GRAD_Y</span></div><div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;    vstore8(gy, 0, ((__global <span class="keywordtype">int</span> *)dst_gy.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>));</div><div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;}</div><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#l00073">helpers.h:73</a></div></div>
1183 <div class="ttc" id="sobel__filter_8cl_xhtml_a7f602251e0a1f8710f8aab3aef09a36b"><div class="ttname"><a href="sobel__filter_8cl.xhtml#a7f602251e0a1f8710f8aab3aef09a36b">SOBEL1x7</a></div><div class="ttdeci">#define SOBEL1x7(ptr, gx, gy)</div><div class="ttdef"><b>Definition:</b> <a href="sobel__filter_8cl_source.xhtml#l00399">sobel_filter.cl:399</a></div></div>
1184 <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#l00095">helpers.h:95</a></div></div>
1185 <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#l00097">helpers.h:97</a></div></div>
1186 </div><!-- fragment -->
1187 </div>
1188 </div>
1189 <a class="anchor" id="a2cc1fcdd12f2c3cdd31b83fd59597e40"></a>
1190 <div class="memitem">
1191 <div class="memproto">
1192       <table class="memname">
1193         <tr>
1194           <td class="memname">__kernel void sobel_separable5x1 </td>
1195           <td>(</td>
1196           <td class="paramtype">__global uchar *&#160;</td>
1197           <td class="paramname"><em>src_x_ptr</em>, </td>
1198         </tr>
1199         <tr>
1200           <td class="paramkey"></td>
1201           <td></td>
1202           <td class="paramtype">uint&#160;</td>
1203           <td class="paramname"><em>src_x_stride_x</em>, </td>
1204         </tr>
1205         <tr>
1206           <td class="paramkey"></td>
1207           <td></td>
1208           <td class="paramtype">uint&#160;</td>
1209           <td class="paramname"><em>src_x_step_x</em>, </td>
1210         </tr>
1211         <tr>
1212           <td class="paramkey"></td>
1213           <td></td>
1214           <td class="paramtype">uint&#160;</td>
1215           <td class="paramname"><em>src_x_stride_y</em>, </td>
1216         </tr>
1217         <tr>
1218           <td class="paramkey"></td>
1219           <td></td>
1220           <td class="paramtype">uint&#160;</td>
1221           <td class="paramname"><em>src_x_step_y</em>, </td>
1222         </tr>
1223         <tr>
1224           <td class="paramkey"></td>
1225           <td></td>
1226           <td class="paramtype">uint&#160;</td>
1227           <td class="paramname"><em>src_x_offset_first_element_in_bytes</em>, </td>
1228         </tr>
1229         <tr>
1230           <td class="paramkey"></td>
1231           <td></td>
1232           <td class="paramtype">__global uchar *&#160;</td>
1233           <td class="paramname"><em>dst_gx_ptr</em>, </td>
1234         </tr>
1235         <tr>
1236           <td class="paramkey"></td>
1237           <td></td>
1238           <td class="paramtype">uint&#160;</td>
1239           <td class="paramname"><em>dst_gx_stride_x</em>, </td>
1240         </tr>
1241         <tr>
1242           <td class="paramkey"></td>
1243           <td></td>
1244           <td class="paramtype">uint&#160;</td>
1245           <td class="paramname"><em>dst_gx_step_x</em>, </td>
1246         </tr>
1247         <tr>
1248           <td class="paramkey"></td>
1249           <td></td>
1250           <td class="paramtype">uint&#160;</td>
1251           <td class="paramname"><em>dst_gx_stride_y</em>, </td>
1252         </tr>
1253         <tr>
1254           <td class="paramkey"></td>
1255           <td></td>
1256           <td class="paramtype">uint&#160;</td>
1257           <td class="paramname"><em>dst_gx_step_y</em>, </td>
1258         </tr>
1259         <tr>
1260           <td class="paramkey"></td>
1261           <td></td>
1262           <td class="paramtype">uint&#160;</td>
1263           <td class="paramname"><em>dst_gx_offset_first_element_in_bytes</em>, </td>
1264         </tr>
1265         <tr>
1266           <td class="paramkey"></td>
1267           <td></td>
1268           <td class="paramtype">__global uchar *&#160;</td>
1269           <td class="paramname"><em>src_y_ptr</em>, </td>
1270         </tr>
1271         <tr>
1272           <td class="paramkey"></td>
1273           <td></td>
1274           <td class="paramtype">uint&#160;</td>
1275           <td class="paramname"><em>src_y_stride_x</em>, </td>
1276         </tr>
1277         <tr>
1278           <td class="paramkey"></td>
1279           <td></td>
1280           <td class="paramtype">uint&#160;</td>
1281           <td class="paramname"><em>src_y_step_x</em>, </td>
1282         </tr>
1283         <tr>
1284           <td class="paramkey"></td>
1285           <td></td>
1286           <td class="paramtype">uint&#160;</td>
1287           <td class="paramname"><em>src_y_stride_y</em>, </td>
1288         </tr>
1289         <tr>
1290           <td class="paramkey"></td>
1291           <td></td>
1292           <td class="paramtype">uint&#160;</td>
1293           <td class="paramname"><em>src_y_step_y</em>, </td>
1294         </tr>
1295         <tr>
1296           <td class="paramkey"></td>
1297           <td></td>
1298           <td class="paramtype">uint&#160;</td>
1299           <td class="paramname"><em>src_y_offset_first_element_in_bytes</em>, </td>
1300         </tr>
1301         <tr>
1302           <td class="paramkey"></td>
1303           <td></td>
1304           <td class="paramtype">__global uchar *&#160;</td>
1305           <td class="paramname"><em>dst_gy_ptr</em>, </td>
1306         </tr>
1307         <tr>
1308           <td class="paramkey"></td>
1309           <td></td>
1310           <td class="paramtype">uint&#160;</td>
1311           <td class="paramname"><em>dst_gy_stride_x</em>, </td>
1312         </tr>
1313         <tr>
1314           <td class="paramkey"></td>
1315           <td></td>
1316           <td class="paramtype">uint&#160;</td>
1317           <td class="paramname"><em>dst_gy_step_x</em>, </td>
1318         </tr>
1319         <tr>
1320           <td class="paramkey"></td>
1321           <td></td>
1322           <td class="paramtype">uint&#160;</td>
1323           <td class="paramname"><em>dst_gy_stride_y</em>, </td>
1324         </tr>
1325         <tr>
1326           <td class="paramkey"></td>
1327           <td></td>
1328           <td class="paramtype">uint&#160;</td>
1329           <td class="paramname"><em>dst_gy_step_y</em>, </td>
1330         </tr>
1331         <tr>
1332           <td class="paramkey"></td>
1333           <td></td>
1334           <td class="paramtype">uint&#160;</td>
1335           <td class="paramname"><em>dst_gy_offset_first_element_in_bytes</em>, </td>
1336         </tr>
1337         <tr>
1338           <td class="paramkey"></td>
1339           <td></td>
1340           <td class="paramtype">int&#160;</td>
1341           <td class="paramname"><em>dummy</em>&#160;</td>
1342         </tr>
1343         <tr>
1344           <td></td>
1345           <td>)</td>
1346           <td></td><td></td>
1347         </tr>
1348       </table>
1349 </div><div class="memdoc">
1350
1351 <p>Apply a 5x1 convolution matrix to two single channel S16 input temporary images and output two single channel S16 images. </p>
1352 <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>
1353 <dl class="params"><dt>Parameters</dt><dd>
1354   <table class="params">
1355     <tr><td class="paramdir">[in]</td><td class="paramname">src_x_ptr</td><td>Pointer to the source image.. Supported data types: S16 </td></tr>
1356     <tr><td class="paramdir">[in]</td><td class="paramname">src_x_stride_x</td><td>Stride of the source image in X dimension (in bytes) </td></tr>
1357     <tr><td class="paramdir">[in]</td><td class="paramname">src_x_step_x</td><td>src_x_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
1358     <tr><td class="paramdir">[in]</td><td class="paramname">src_x_stride_y</td><td>Stride of the source image in Y dimension (in bytes) </td></tr>
1359     <tr><td class="paramdir">[in]</td><td class="paramname">src_x_step_y</td><td>src_x_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
1360     <tr><td class="paramdir">[in]</td><td class="paramname">src_x_offset_first_element_in_bytes</td><td>The offset of the first element in the source image </td></tr>
1361     <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>
1362     <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>
1363     <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>
1364     <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>
1365     <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>
1366     <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>
1367     <tr><td class="paramdir">[in]</td><td class="paramname">src_y_ptr</td><td>Pointer to the source image. Supported data types: S16 </td></tr>
1368     <tr><td class="paramdir">[in]</td><td class="paramname">src_y_stride_x</td><td>Stride of the source image in X dimension (in bytes) </td></tr>
1369     <tr><td class="paramdir">[in]</td><td class="paramname">src_y_step_x</td><td>src_y_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
1370     <tr><td class="paramdir">[in]</td><td class="paramname">src_y_stride_y</td><td>Stride of the source image in Y dimension (in bytes) </td></tr>
1371     <tr><td class="paramdir">[in]</td><td class="paramname">src_y_step_y</td><td>src_y_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
1372     <tr><td class="paramdir">[in]</td><td class="paramname">src_y_offset_first_element_in_bytes</td><td>The offset of the first element in the source image </td></tr>
1373     <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>
1374     <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>
1375     <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>
1376     <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>
1377     <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>
1378     <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>
1379     <tr><td class="paramdir">[in]</td><td class="paramname">dummy</td><td>Dummy parameter to easy conditional inclusion </td></tr>
1380   </table>
1381   </dd>
1382 </dl>
1383
1384 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00325">325</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
1385
1386 <p>References <a class="el" href="helpers_8h_source.xhtml#l00073">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="helpers_8h_source.xhtml#l00097">Image::ptr</a>, and <a class="el" href="sobel__filter_8cl_source.xhtml#l00206">sobel5x1()</a>.</p>
1387 <div class="fragment"><div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;{</div><div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;<span class="preprocessor">#ifdef GRAD_X</span></div><div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> src_x  = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(src_x);</div><div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> dst_gx = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(dst_gx);</div><div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;<span class="preprocessor">#ifdef GRAD_Y</span></div><div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> src_y  = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(src_y);</div><div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> dst_gy = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(dst_gy);</div><div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;</div><div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;<span class="preprocessor">#ifdef GRAD_X</span></div><div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;    short8 gx = <a class="code" href="sobel__filter_8cl.xhtml#a1cfe58175749124762fe0dea315d3c21">sobel5x1</a>(&amp;src_x,</div><div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;                         1, 4, 6, 4, 1);</div><div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;    vstore8(gx, 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="l00349"></a><span class="lineno">  349</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;<span class="preprocessor">#ifdef GRAD_Y</span></div><div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;    short8 gy = <a class="code" href="sobel__filter_8cl.xhtml#a1cfe58175749124762fe0dea315d3c21">sobel5x1</a>(&amp;src_y,</div><div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;                         -1, -2, 0, 2, 1);</div><div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;    vstore8(gy, 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="l00354"></a><span class="lineno">  354</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;}</div><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#l00073">helpers.h:73</a></div></div>
1388 <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#l00095">helpers.h:95</a></div></div>
1389 <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#l00097">helpers.h:97</a></div></div>
1390 <div class="ttc" id="sobel__filter_8cl_xhtml_a1cfe58175749124762fe0dea315d3c21"><div class="ttname"><a href="sobel__filter_8cl.xhtml#a1cfe58175749124762fe0dea315d3c21">sobel5x1</a></div><div class="ttdeci">short8 sobel5x1(Image *src, const short up1_coeff, const short up2_coeff, const short middle_coeff, const short down1_coeff, const short down2_coeff)</div><div class="ttdoc">Compute a 1D vertical sobel filter 5x1 for 8 bytes assuming the input is made of 1 channel of 1 byte ...</div><div class="ttdef"><b>Definition:</b> <a href="sobel__filter_8cl_source.xhtml#l00206">sobel_filter.cl:206</a></div></div>
1391 </div><!-- fragment -->
1392 </div>
1393 </div>
1394 <a class="anchor" id="a8cdc6e6df9d40cec1e857917d14ee75f"></a>
1395 <div class="memitem">
1396 <div class="memproto">
1397       <table class="memname">
1398         <tr>
1399           <td class="memname">__kernel void sobel_separable7x1 </td>
1400           <td>(</td>
1401           <td class="paramtype">__global uchar *&#160;</td>
1402           <td class="paramname"><em>src_x_ptr</em>, </td>
1403         </tr>
1404         <tr>
1405           <td class="paramkey"></td>
1406           <td></td>
1407           <td class="paramtype">uint&#160;</td>
1408           <td class="paramname"><em>src_x_stride_x</em>, </td>
1409         </tr>
1410         <tr>
1411           <td class="paramkey"></td>
1412           <td></td>
1413           <td class="paramtype">uint&#160;</td>
1414           <td class="paramname"><em>src_x_step_x</em>, </td>
1415         </tr>
1416         <tr>
1417           <td class="paramkey"></td>
1418           <td></td>
1419           <td class="paramtype">uint&#160;</td>
1420           <td class="paramname"><em>src_x_stride_y</em>, </td>
1421         </tr>
1422         <tr>
1423           <td class="paramkey"></td>
1424           <td></td>
1425           <td class="paramtype">uint&#160;</td>
1426           <td class="paramname"><em>src_x_step_y</em>, </td>
1427         </tr>
1428         <tr>
1429           <td class="paramkey"></td>
1430           <td></td>
1431           <td class="paramtype">uint&#160;</td>
1432           <td class="paramname"><em>src_x_offset_first_element_in_bytes</em>, </td>
1433         </tr>
1434         <tr>
1435           <td class="paramkey"></td>
1436           <td></td>
1437           <td class="paramtype">__global uchar *&#160;</td>
1438           <td class="paramname"><em>dst_gx_ptr</em>, </td>
1439         </tr>
1440         <tr>
1441           <td class="paramkey"></td>
1442           <td></td>
1443           <td class="paramtype">uint&#160;</td>
1444           <td class="paramname"><em>dst_gx_stride_x</em>, </td>
1445         </tr>
1446         <tr>
1447           <td class="paramkey"></td>
1448           <td></td>
1449           <td class="paramtype">uint&#160;</td>
1450           <td class="paramname"><em>dst_gx_step_x</em>, </td>
1451         </tr>
1452         <tr>
1453           <td class="paramkey"></td>
1454           <td></td>
1455           <td class="paramtype">uint&#160;</td>
1456           <td class="paramname"><em>dst_gx_stride_y</em>, </td>
1457         </tr>
1458         <tr>
1459           <td class="paramkey"></td>
1460           <td></td>
1461           <td class="paramtype">uint&#160;</td>
1462           <td class="paramname"><em>dst_gx_step_y</em>, </td>
1463         </tr>
1464         <tr>
1465           <td class="paramkey"></td>
1466           <td></td>
1467           <td class="paramtype">uint&#160;</td>
1468           <td class="paramname"><em>dst_gx_offset_first_element_in_bytes</em>, </td>
1469         </tr>
1470         <tr>
1471           <td class="paramkey"></td>
1472           <td></td>
1473           <td class="paramtype">__global uchar *&#160;</td>
1474           <td class="paramname"><em>src_y_ptr</em>, </td>
1475         </tr>
1476         <tr>
1477           <td class="paramkey"></td>
1478           <td></td>
1479           <td class="paramtype">uint&#160;</td>
1480           <td class="paramname"><em>src_y_stride_x</em>, </td>
1481         </tr>
1482         <tr>
1483           <td class="paramkey"></td>
1484           <td></td>
1485           <td class="paramtype">uint&#160;</td>
1486           <td class="paramname"><em>src_y_step_x</em>, </td>
1487         </tr>
1488         <tr>
1489           <td class="paramkey"></td>
1490           <td></td>
1491           <td class="paramtype">uint&#160;</td>
1492           <td class="paramname"><em>src_y_stride_y</em>, </td>
1493         </tr>
1494         <tr>
1495           <td class="paramkey"></td>
1496           <td></td>
1497           <td class="paramtype">uint&#160;</td>
1498           <td class="paramname"><em>src_y_step_y</em>, </td>
1499         </tr>
1500         <tr>
1501           <td class="paramkey"></td>
1502           <td></td>
1503           <td class="paramtype">uint&#160;</td>
1504           <td class="paramname"><em>src_y_offset_first_element_in_bytes</em>, </td>
1505         </tr>
1506         <tr>
1507           <td class="paramkey"></td>
1508           <td></td>
1509           <td class="paramtype">__global uchar *&#160;</td>
1510           <td class="paramname"><em>dst_gy_ptr</em>, </td>
1511         </tr>
1512         <tr>
1513           <td class="paramkey"></td>
1514           <td></td>
1515           <td class="paramtype">uint&#160;</td>
1516           <td class="paramname"><em>dst_gy_stride_x</em>, </td>
1517         </tr>
1518         <tr>
1519           <td class="paramkey"></td>
1520           <td></td>
1521           <td class="paramtype">uint&#160;</td>
1522           <td class="paramname"><em>dst_gy_step_x</em>, </td>
1523         </tr>
1524         <tr>
1525           <td class="paramkey"></td>
1526           <td></td>
1527           <td class="paramtype">uint&#160;</td>
1528           <td class="paramname"><em>dst_gy_stride_y</em>, </td>
1529         </tr>
1530         <tr>
1531           <td class="paramkey"></td>
1532           <td></td>
1533           <td class="paramtype">uint&#160;</td>
1534           <td class="paramname"><em>dst_gy_step_y</em>, </td>
1535         </tr>
1536         <tr>
1537           <td class="paramkey"></td>
1538           <td></td>
1539           <td class="paramtype">uint&#160;</td>
1540           <td class="paramname"><em>dst_gy_offset_first_element_in_bytes</em>, </td>
1541         </tr>
1542         <tr>
1543           <td class="paramkey"></td>
1544           <td></td>
1545           <td class="paramtype">int&#160;</td>
1546           <td class="paramname"><em>dummy</em>&#160;</td>
1547         </tr>
1548         <tr>
1549           <td></td>
1550           <td>)</td>
1551           <td></td><td></td>
1552         </tr>
1553       </table>
1554 </div><div class="memdoc">
1555
1556 <p>Apply a 7x1 convolution matrix to two single channel S16 input temporary images and output two single channel S16 images and leave the borders undefined. </p>
1557 <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>
1558 <dl class="params"><dt>Parameters</dt><dd>
1559   <table class="params">
1560     <tr><td class="paramdir">[in]</td><td class="paramname">src_x_ptr</td><td>Pointer to the source image. Supported data types: S32 </td></tr>
1561     <tr><td class="paramdir">[in]</td><td class="paramname">src_x_stride_x</td><td>Stride of the source image in X dimension (in bytes) </td></tr>
1562     <tr><td class="paramdir">[in]</td><td class="paramname">src_x_step_x</td><td>src_x_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
1563     <tr><td class="paramdir">[in]</td><td class="paramname">src_x_stride_y</td><td>Stride of the source image in Y dimension (in bytes) </td></tr>
1564     <tr><td class="paramdir">[in]</td><td class="paramname">src_x_step_y</td><td>src_x_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
1565     <tr><td class="paramdir">[in]</td><td class="paramname">src_x_offset_first_element_in_bytes</td><td>The offset of the first element in the source image </td></tr>
1566     <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>
1567     <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>
1568     <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>
1569     <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>
1570     <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>
1571     <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>
1572     <tr><td class="paramdir">[in]</td><td class="paramname">src_y_ptr</td><td>Pointer to the source image. Supported data types: S32 </td></tr>
1573     <tr><td class="paramdir">[in]</td><td class="paramname">src_y_stride_x</td><td>Stride of the source image in X dimension (in bytes) </td></tr>
1574     <tr><td class="paramdir">[in]</td><td class="paramname">src_y_step_x</td><td>src_y_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
1575     <tr><td class="paramdir">[in]</td><td class="paramname">src_y_stride_y</td><td>Stride of the source image in Y dimension (in bytes) </td></tr>
1576     <tr><td class="paramdir">[in]</td><td class="paramname">src_y_step_y</td><td>src_y_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
1577     <tr><td class="paramdir">[in]</td><td class="paramname">src_y_offset_first_element_in_bytes</td><td>The offset of the first element in the source image </td></tr>
1578     <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>
1579     <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>
1580     <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>
1581     <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>
1582     <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>
1583     <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>
1584     <tr><td class="paramdir">[in]</td><td class="paramname">dummy</td><td>Dummy parameter to easy conditional inclusion </td></tr>
1585   </table>
1586   </dd>
1587 </dl>
1588
1589 <p>Definition at line <a class="el" href="sobel__filter_8cl_source.xhtml#l00506">506</a> of file <a class="el" href="sobel__filter_8cl_source.xhtml">sobel_filter.cl</a>.</p>
1590
1591 <p>References <a class="el" href="helpers_8h_source.xhtml#l00073">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="helpers_8h_source.xhtml#l00097">Image::ptr</a>, and <a class="el" href="sobel__filter_8cl_source.xhtml#l00409">SOBEL7x1</a>.</p>
1592 <div class="fragment"><div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;{</div><div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;<span class="preprocessor">#ifdef GRAD_X</span></div><div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> src_x  = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(src_x);</div><div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> dst_gx = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(dst_gx);</div><div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;<span class="preprocessor">#ifdef GRAD_Y</span></div><div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> src_y  = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(src_y);</div><div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> dst_gy = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(dst_gy);</div><div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;</div><div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;    <span class="comment">// Output pixels</span></div><div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;<span class="preprocessor">#ifdef GRAD_X</span></div><div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;    int8 gx = 0;</div><div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;    <a class="code" href="sobel__filter_8cl.xhtml#a59f291bf2b268f9b850fa81a3fbf776a">SOBEL7x1</a>(&amp;src_x, gx, Y);</div><div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;    vstore8(gx, 0, (__global <span class="keywordtype">int</span> *)dst_gx.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;<span class="preprocessor">#ifdef GRAD_Y</span></div><div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;    int8 gy = 0;</div><div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;    <a class="code" href="sobel__filter_8cl.xhtml#a59f291bf2b268f9b850fa81a3fbf776a">SOBEL7x1</a>(&amp;src_y, gy, X);</div><div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;    vstore8(gy, 0, (__global <span class="keywordtype">int</span> *)dst_gy.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;}</div><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#l00073">helpers.h:73</a></div></div>
1593 <div class="ttc" id="sobel__filter_8cl_xhtml_a59f291bf2b268f9b850fa81a3fbf776a"><div class="ttname"><a href="sobel__filter_8cl.xhtml#a59f291bf2b268f9b850fa81a3fbf776a">SOBEL7x1</a></div><div class="ttdeci">#define SOBEL7x1(ptr, g, direction)</div><div class="ttdef"><b>Definition:</b> <a href="sobel__filter_8cl_source.xhtml#l00409">sobel_filter.cl:409</a></div></div>
1594 <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#l00095">helpers.h:95</a></div></div>
1595 <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#l00097">helpers.h:97</a></div></div>
1596 </div><!-- fragment -->
1597 </div>
1598 </div>
1599 </div><!-- contents -->
1600 </div><!-- doc-content -->
1601 <!-- start footer part -->
1602 <div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
1603   <ul>
1604     <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="sobel__filter_8cl.xhtml">sobel_filter.cl</a></li>
1605     <li class="footer">Generated on Wed Apr 12 2017 14:26:05 for ARM Compute Library by
1606     <a href="http://www.doxygen.org/index.html">
1607     <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.11 </li>
1608   </ul>
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