documentation/remap_8cl.xhtml

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 114 <div class="header">
 115   <div class="summary">
 116 <a href="#func-members">Functions</a>  </div>
 117   <div class="headertitle">
 118 <div class="title">remap.cl File Reference</div>  </div>
 119 </div><!--header-->
 120 <div class="contents">
 121 <div class="textblock"><code>#include &quot;<a class="el" href="helpers_8h_source.xhtml">helpers.h</a>&quot;</code><br />
 122 <code>#include &quot;<a class="el" href="warp__helpers_8h_source.xhtml">warp_helpers.h</a>&quot;</code><br />
 123 </div>
 124 <p><a href="remap_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="func-members"></a>
 127 Functions</h2></td></tr>
 128 <tr class="memitem:a786803611cc128275d32d9584376713e"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="remap_8cl.xhtml#a786803611cc128275d32d9584376713e">remap_nearest_neighbour</a> (__global uchar *in_ptr, uint in_stride_x, uint in_step_x, uint in_stride_y, uint in_step_y, uint in_offset_first_element_in_bytes, __global uchar *out_ptr, uint out_stride_x, uint out_step_x, uint out_stride_y, uint out_step_y, uint out_offset_first_element_in_bytes, __global uchar *mapx_ptr, uint mapx_stride_x, uint mapx_step_x, uint mapx_stride_y, uint mapx_step_y, uint mapx_offset_first_element_in_bytes, __global uchar *mapy_ptr, uint mapy_stride_x, uint mapy_step_x, uint mapy_stride_y, uint mapy_step_y, uint mapy_offset_first_element_in_bytes, const float width, const float height)</td></tr>
 129 <tr class="memdesc:a786803611cc128275d32d9584376713e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Performs a remapping of an input image to an output given two remapping image using nearest neighbor as interpolation.  <a href="#a786803611cc128275d32d9584376713e">More...</a><br /></td></tr>
 130 <tr class="separator:a786803611cc128275d32d9584376713e"><td class="memSeparator" colspan="2">&#160;</td></tr>
 131 <tr class="memitem:a1d771133d1dfea450fdbacda1c34ce49"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="remap_8cl.xhtml#a1d771133d1dfea450fdbacda1c34ce49">remap_bilinear</a> (__global uchar *in_ptr, uint in_stride_x, uint in_step_x, uint in_stride_y, uint in_step_y, uint in_offset_first_element_in_bytes, __global uchar *out_ptr, uint out_stride_x, uint out_step_x, uint out_stride_y, uint out_step_y, uint out_offset_first_element_in_bytes, __global uchar *mapx_ptr, uint mapx_stride_x, uint mapx_step_x, uint mapx_stride_y, uint mapx_step_y, uint mapx_offset_first_element_in_bytes, __global uchar *mapy_ptr, uint mapy_stride_x, uint mapy_step_x, uint mapy_stride_y, uint mapy_step_y, uint mapy_offset_first_element_in_bytes, const float width, const float height)</td></tr>
 132 <tr class="memdesc:a1d771133d1dfea450fdbacda1c34ce49"><td class="mdescLeft">&#160;</td><td class="mdescRight">Performs a remapping of an input image to an output given two remapping image using bilinear as interpolation.  <a href="#a1d771133d1dfea450fdbacda1c34ce49">More...</a><br /></td></tr>
 133 <tr class="separator:a1d771133d1dfea450fdbacda1c34ce49"><td class="memSeparator" colspan="2">&#160;</td></tr>
 134 </table>
 135 <h2 class="groupheader">Function Documentation</h2>
 136 <a class="anchor" id="a1d771133d1dfea450fdbacda1c34ce49"></a>
 137 <div class="memitem">
 138 <div class="memproto">
 139       <table class="memname">
 140         <tr>
 141           <td class="memname">__kernel void remap_bilinear </td>
 142           <td>(</td>
 143           <td class="paramtype">__global uchar *&#160;</td>
 144           <td class="paramname"><em>in_ptr</em>, </td>
 145         </tr>
 146         <tr>
 147           <td class="paramkey"></td>
 148           <td></td>
 149           <td class="paramtype">uint&#160;</td>
 150           <td class="paramname"><em>in_stride_x</em>, </td>
 151         </tr>
 152         <tr>
 153           <td class="paramkey"></td>
 154           <td></td>
 155           <td class="paramtype">uint&#160;</td>
 156           <td class="paramname"><em>in_step_x</em>, </td>
 157         </tr>
 158         <tr>
 159           <td class="paramkey"></td>
 160           <td></td>
 161           <td class="paramtype">uint&#160;</td>
 162           <td class="paramname"><em>in_stride_y</em>, </td>
 163         </tr>
 164         <tr>
 165           <td class="paramkey"></td>
 166           <td></td>
 167           <td class="paramtype">uint&#160;</td>
 168           <td class="paramname"><em>in_step_y</em>, </td>
 169         </tr>
 170         <tr>
 171           <td class="paramkey"></td>
 172           <td></td>
 173           <td class="paramtype">uint&#160;</td>
 174           <td class="paramname"><em>in_offset_first_element_in_bytes</em>, </td>
 175         </tr>
 176         <tr>
 177           <td class="paramkey"></td>
 178           <td></td>
 179           <td class="paramtype">__global uchar *&#160;</td>
 180           <td class="paramname"><em>out_ptr</em>, </td>
 181         </tr>
 182         <tr>
 183           <td class="paramkey"></td>
 184           <td></td>
 185           <td class="paramtype">uint&#160;</td>
 186           <td class="paramname"><em>out_stride_x</em>, </td>
 187         </tr>
 188         <tr>
 189           <td class="paramkey"></td>
 190           <td></td>
 191           <td class="paramtype">uint&#160;</td>
 192           <td class="paramname"><em>out_step_x</em>, </td>
 193         </tr>
 194         <tr>
 195           <td class="paramkey"></td>
 196           <td></td>
 197           <td class="paramtype">uint&#160;</td>
 198           <td class="paramname"><em>out_stride_y</em>, </td>
 199         </tr>
 200         <tr>
 201           <td class="paramkey"></td>
 202           <td></td>
 203           <td class="paramtype">uint&#160;</td>
 204           <td class="paramname"><em>out_step_y</em>, </td>
 205         </tr>
 206         <tr>
 207           <td class="paramkey"></td>
 208           <td></td>
 209           <td class="paramtype">uint&#160;</td>
 210           <td class="paramname"><em>out_offset_first_element_in_bytes</em>, </td>
 211         </tr>
 212         <tr>
 213           <td class="paramkey"></td>
 214           <td></td>
 215           <td class="paramtype">__global uchar *&#160;</td>
 216           <td class="paramname"><em>mapx_ptr</em>, </td>
 217         </tr>
 218         <tr>
 219           <td class="paramkey"></td>
 220           <td></td>
 221           <td class="paramtype">uint&#160;</td>
 222           <td class="paramname"><em>mapx_stride_x</em>, </td>
 223         </tr>
 224         <tr>
 225           <td class="paramkey"></td>
 226           <td></td>
 227           <td class="paramtype">uint&#160;</td>
 228           <td class="paramname"><em>mapx_step_x</em>, </td>
 229         </tr>
 230         <tr>
 231           <td class="paramkey"></td>
 232           <td></td>
 233           <td class="paramtype">uint&#160;</td>
 234           <td class="paramname"><em>mapx_stride_y</em>, </td>
 235         </tr>
 236         <tr>
 237           <td class="paramkey"></td>
 238           <td></td>
 239           <td class="paramtype">uint&#160;</td>
 240           <td class="paramname"><em>mapx_step_y</em>, </td>
 241         </tr>
 242         <tr>
 243           <td class="paramkey"></td>
 244           <td></td>
 245           <td class="paramtype">uint&#160;</td>
 246           <td class="paramname"><em>mapx_offset_first_element_in_bytes</em>, </td>
 247         </tr>
 248         <tr>
 249           <td class="paramkey"></td>
 250           <td></td>
 251           <td class="paramtype">__global uchar *&#160;</td>
 252           <td class="paramname"><em>mapy_ptr</em>, </td>
 253         </tr>
 254         <tr>
 255           <td class="paramkey"></td>
 256           <td></td>
 257           <td class="paramtype">uint&#160;</td>
 258           <td class="paramname"><em>mapy_stride_x</em>, </td>
 259         </tr>
 260         <tr>
 261           <td class="paramkey"></td>
 262           <td></td>
 263           <td class="paramtype">uint&#160;</td>
 264           <td class="paramname"><em>mapy_step_x</em>, </td>
 265         </tr>
 266         <tr>
 267           <td class="paramkey"></td>
 268           <td></td>
 269           <td class="paramtype">uint&#160;</td>
 270           <td class="paramname"><em>mapy_stride_y</em>, </td>
 271         </tr>
 272         <tr>
 273           <td class="paramkey"></td>
 274           <td></td>
 275           <td class="paramtype">uint&#160;</td>
 276           <td class="paramname"><em>mapy_step_y</em>, </td>
 277         </tr>
 278         <tr>
 279           <td class="paramkey"></td>
 280           <td></td>
 281           <td class="paramtype">uint&#160;</td>
 282           <td class="paramname"><em>mapy_offset_first_element_in_bytes</em>, </td>
 283         </tr>
 284         <tr>
 285           <td class="paramkey"></td>
 286           <td></td>
 287           <td class="paramtype">const float&#160;</td>
 288           <td class="paramname"><em>width</em>, </td>
 289         </tr>
 290         <tr>
 291           <td class="paramkey"></td>
 292           <td></td>
 293           <td class="paramtype">const float&#160;</td>
 294           <td class="paramname"><em>height</em>&#160;</td>
 295         </tr>
 296         <tr>
 297           <td></td>
 298           <td>)</td>
 299           <td></td><td></td>
 300         </tr>
 301       </table>
 302 </div><div class="memdoc">
 303
 304 <p>Performs a remapping of an input image to an output given two remapping image using bilinear as interpolation. </p>
 305 <p>This kernel performs remapping with this method of pixel coordinate translation: out(x,y) = in(mapx(x,y), mapy(x,y));</p>
 306 <dl class="params"><dt>Parameters</dt><dd>
 307   <table class="params">
 308     <tr><td class="paramdir">[in]</td><td class="paramname">in_ptr</td><td>Pointer to the source image. Supported data types: U8. </td></tr>
 309     <tr><td class="paramdir">[in]</td><td class="paramname">in_stride_x</td><td>Stride of the source image in X dimension (in bytes) </td></tr>
 310     <tr><td class="paramdir">[in]</td><td class="paramname">in_step_x</td><td>in_stride_x * number of elements along X processed per work item (in bytes) </td></tr>
 311     <tr><td class="paramdir">[in]</td><td class="paramname">in_stride_y</td><td>Stride of the source image in Y dimension (in bytes) </td></tr>
 312     <tr><td class="paramdir">[in]</td><td class="paramname">in_step_y</td><td>in_stride_y * number of elements along Y processed per work item (in bytes) </td></tr>
 313     <tr><td class="paramdir">[in]</td><td class="paramname">in_offset_first_element_in_bytes</td><td>Offset of the first element in the source image </td></tr>
 314     <tr><td class="paramdir">[out]</td><td class="paramname">out_ptr</td><td>Pointer to the destination image. Supported data types: U8. </td></tr>
 315     <tr><td class="paramdir">[in]</td><td class="paramname">out_stride_x</td><td>Stride of the destination image in X dimension (in bytes) </td></tr>
 316     <tr><td class="paramdir">[in]</td><td class="paramname">out_step_x</td><td>out_stride_x * number of elements along X processed per work item (in bytes) </td></tr>
 317     <tr><td class="paramdir">[in]</td><td class="paramname">out_stride_y</td><td>Stride of the destination image in Y dimension (in bytes) </td></tr>
 318     <tr><td class="paramdir">[in]</td><td class="paramname">out_step_y</td><td>out_stride_y * number of elements along Y processed per work item (in bytes) </td></tr>
 319     <tr><td class="paramdir">[in]</td><td class="paramname">out_offset_first_element_in_bytes</td><td>Offset of the first element in the destination image </td></tr>
 320     <tr><td class="paramdir">[in]</td><td class="paramname">mapx_ptr</td><td>Pointer to the x remapping image. Supported data types: F32. </td></tr>
 321     <tr><td class="paramdir">[in]</td><td class="paramname">mapx_stride_x</td><td>Stride of the remapping image in X dimension (in bytes) </td></tr>
 322     <tr><td class="paramdir">[in]</td><td class="paramname">mapx_step_x</td><td>mapx_stride_x * number of elements along X processed per work item (in bytes) </td></tr>
 323     <tr><td class="paramdir">[in]</td><td class="paramname">mapx_stride_y</td><td>Stride of the remapping image in Y dimension (in bytes) </td></tr>
 324     <tr><td class="paramdir">[in]</td><td class="paramname">mapx_step_y</td><td>mapy_stride_y * number of elements along Y processed per work item (in bytes) </td></tr>
 325     <tr><td class="paramdir">[in]</td><td class="paramname">mapx_offset_first_element_in_bytes</td><td>Offset of the first element in the remapping image </td></tr>
 326     <tr><td class="paramdir">[in]</td><td class="paramname">mapy_ptr</td><td>Pointer to the x remapping image. Supported data types: F32. </td></tr>
 327     <tr><td class="paramdir">[in]</td><td class="paramname">mapy_stride_x</td><td>Stride of the remapping image in X dimension (in bytes) </td></tr>
 328     <tr><td class="paramdir">[in]</td><td class="paramname">mapy_step_x</td><td>mapy_stride_x * number of elements along X processed per work item (in bytes) </td></tr>
 329     <tr><td class="paramdir">[in]</td><td class="paramname">mapy_stride_y</td><td>Stride of the remapping image in Y dimension (in bytes) </td></tr>
 330     <tr><td class="paramdir">[in]</td><td class="paramname">mapy_step_y</td><td>mapy_stride_y * number of elements along Y processed per work item (in bytes) </td></tr>
 331     <tr><td class="paramdir">[in]</td><td class="paramname">mapy_offset_first_element_in_bytes</td><td>Offset of the first element in the remapping image </td></tr>
 332     <tr><td class="paramdir">[in]</td><td class="paramname">width</td><td>Width of the input image </td></tr>
 333     <tr><td class="paramdir">[in]</td><td class="paramname">height</td><td>Height of the input image </td></tr>
 334   </table>
 335   </dd>
 336 </dl>
 337
 338 <p>Definition at line <a class="el" href="remap_8cl_source.xhtml#l00113">113</a> of file <a class="el" href="remap_8cl_source.xhtml">remap.cl</a>.</p>
 339
 340 <p>References <a class="el" href="warp__helpers_8h_source.xhtml#l00080">bilinear_interpolate()</a>, <a class="el" href="warp__helpers_8h_source.xhtml#l00033">clamp_to_border()</a>, <a class="el" href="helpers_8h_source.xhtml#l00073">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="helpers_8h_source.xhtml#l00076">CONVERT_TO_IMAGE_STRUCT_NO_STEP</a>, and <a class="el" href="helpers_8h_source.xhtml#l00097">Image::ptr</a>.</p>
 341 <div class="fragment"><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;    <a class="code" href="struct_image.xhtml">Image</a> in   = <a class="code" href="helpers_8h.xhtml#a4334a4a76f8e9628c0fb9e1acf616e2a">CONVERT_TO_IMAGE_STRUCT_NO_STEP</a>(in);</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> out  = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(out);</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> mapx = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(mapx);</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> mapy = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(mapy);</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;    float4 mapx_coords = vload4(0, (__global <span class="keywordtype">float</span> *)mapx.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;    float4 mapy_coords = vload4(0, (__global <span class="keywordtype">float</span> *)mapy.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;    float8 map_coords  = (float8)(mapx_coords.s0, mapy_coords.s0, mapx_coords.s1, mapy_coords.s1,</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;                                  mapx_coords.s2, mapy_coords.s2, mapx_coords.s3, mapy_coords.s3);</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    vstore4(<a class="code" href="warp__helpers_8h.xhtml#abea9f226daf3e0ad741d03cf7417d353">bilinear_interpolate</a>(&amp;in, <a class="code" href="warp__helpers_8h.xhtml#adbdf2ca9e8fe0b67f9359929ef743126">clamp_to_border</a>(map_coords, width, height), width, height), 0, out.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;}</div><div class="ttc" id="warp__helpers_8h_xhtml_adbdf2ca9e8fe0b67f9359929ef743126"><div class="ttname"><a href="warp__helpers_8h.xhtml#adbdf2ca9e8fe0b67f9359929ef743126">clamp_to_border</a></div><div class="ttdeci">const float8 clamp_to_border(float8 coords, const float width, const float height)</div><div class="ttdoc">Clamps the given coordinates to the borders. </div><div class="ttdef"><b>Definition:</b> <a href="warp__helpers_8h_source.xhtml#l00033">warp_helpers.h:33</a></div></div>
 342 <div class="ttc" id="helpers_8h_xhtml_a4334a4a76f8e9628c0fb9e1acf616e2a"><div class="ttname"><a href="helpers_8h.xhtml#a4334a4a76f8e9628c0fb9e1acf616e2a">CONVERT_TO_IMAGE_STRUCT_NO_STEP</a></div><div class="ttdeci">#define CONVERT_TO_IMAGE_STRUCT_NO_STEP(name)</div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00076">helpers.h:76</a></div></div>
 343 <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>
 344 <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>
 345 <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>
 346 <div class="ttc" id="warp__helpers_8h_xhtml_abea9f226daf3e0ad741d03cf7417d353"><div class="ttname"><a href="warp__helpers_8h.xhtml#abea9f226daf3e0ad741d03cf7417d353">bilinear_interpolate</a></div><div class="ttdeci">const DATA_TYPE4 bilinear_interpolate(const Image *in, const float8 coords, const float width, const float height)</div><div class="ttdoc">Computes the bilinear interpolation for each set of coordinates in the vector coords and returns the ...</div><div class="ttdef"><b>Definition:</b> <a href="warp__helpers_8h_source.xhtml#l00080">warp_helpers.h:80</a></div></div>
 347 </div><!-- fragment -->
 348 </div>
 349 </div>
 350 <a class="anchor" id="a786803611cc128275d32d9584376713e"></a>
 351 <div class="memitem">
 352 <div class="memproto">
 353       <table class="memname">
 354         <tr>
 355           <td class="memname">__kernel void remap_nearest_neighbour </td>
 356           <td>(</td>
 357           <td class="paramtype">__global uchar *&#160;</td>
 358           <td class="paramname"><em>in_ptr</em>, </td>
 359         </tr>
 360         <tr>
 361           <td class="paramkey"></td>
 362           <td></td>
 363           <td class="paramtype">uint&#160;</td>
 364           <td class="paramname"><em>in_stride_x</em>, </td>
 365         </tr>
 366         <tr>
 367           <td class="paramkey"></td>
 368           <td></td>
 369           <td class="paramtype">uint&#160;</td>
 370           <td class="paramname"><em>in_step_x</em>, </td>
 371         </tr>
 372         <tr>
 373           <td class="paramkey"></td>
 374           <td></td>
 375           <td class="paramtype">uint&#160;</td>
 376           <td class="paramname"><em>in_stride_y</em>, </td>
 377         </tr>
 378         <tr>
 379           <td class="paramkey"></td>
 380           <td></td>
 381           <td class="paramtype">uint&#160;</td>
 382           <td class="paramname"><em>in_step_y</em>, </td>
 383         </tr>
 384         <tr>
 385           <td class="paramkey"></td>
 386           <td></td>
 387           <td class="paramtype">uint&#160;</td>
 388           <td class="paramname"><em>in_offset_first_element_in_bytes</em>, </td>
 389         </tr>
 390         <tr>
 391           <td class="paramkey"></td>
 392           <td></td>
 393           <td class="paramtype">__global uchar *&#160;</td>
 394           <td class="paramname"><em>out_ptr</em>, </td>
 395         </tr>
 396         <tr>
 397           <td class="paramkey"></td>
 398           <td></td>
 399           <td class="paramtype">uint&#160;</td>
 400           <td class="paramname"><em>out_stride_x</em>, </td>
 401         </tr>
 402         <tr>
 403           <td class="paramkey"></td>
 404           <td></td>
 405           <td class="paramtype">uint&#160;</td>
 406           <td class="paramname"><em>out_step_x</em>, </td>
 407         </tr>
 408         <tr>
 409           <td class="paramkey"></td>
 410           <td></td>
 411           <td class="paramtype">uint&#160;</td>
 412           <td class="paramname"><em>out_stride_y</em>, </td>
 413         </tr>
 414         <tr>
 415           <td class="paramkey"></td>
 416           <td></td>
 417           <td class="paramtype">uint&#160;</td>
 418           <td class="paramname"><em>out_step_y</em>, </td>
 419         </tr>
 420         <tr>
 421           <td class="paramkey"></td>
 422           <td></td>
 423           <td class="paramtype">uint&#160;</td>
 424           <td class="paramname"><em>out_offset_first_element_in_bytes</em>, </td>
 425         </tr>
 426         <tr>
 427           <td class="paramkey"></td>
 428           <td></td>
 429           <td class="paramtype">__global uchar *&#160;</td>
 430           <td class="paramname"><em>mapx_ptr</em>, </td>
 431         </tr>
 432         <tr>
 433           <td class="paramkey"></td>
 434           <td></td>
 435           <td class="paramtype">uint&#160;</td>
 436           <td class="paramname"><em>mapx_stride_x</em>, </td>
 437         </tr>
 438         <tr>
 439           <td class="paramkey"></td>
 440           <td></td>
 441           <td class="paramtype">uint&#160;</td>
 442           <td class="paramname"><em>mapx_step_x</em>, </td>
 443         </tr>
 444         <tr>
 445           <td class="paramkey"></td>
 446           <td></td>
 447           <td class="paramtype">uint&#160;</td>
 448           <td class="paramname"><em>mapx_stride_y</em>, </td>
 449         </tr>
 450         <tr>
 451           <td class="paramkey"></td>
 452           <td></td>
 453           <td class="paramtype">uint&#160;</td>
 454           <td class="paramname"><em>mapx_step_y</em>, </td>
 455         </tr>
 456         <tr>
 457           <td class="paramkey"></td>
 458           <td></td>
 459           <td class="paramtype">uint&#160;</td>
 460           <td class="paramname"><em>mapx_offset_first_element_in_bytes</em>, </td>
 461         </tr>
 462         <tr>
 463           <td class="paramkey"></td>
 464           <td></td>
 465           <td class="paramtype">__global uchar *&#160;</td>
 466           <td class="paramname"><em>mapy_ptr</em>, </td>
 467         </tr>
 468         <tr>
 469           <td class="paramkey"></td>
 470           <td></td>
 471           <td class="paramtype">uint&#160;</td>
 472           <td class="paramname"><em>mapy_stride_x</em>, </td>
 473         </tr>
 474         <tr>
 475           <td class="paramkey"></td>
 476           <td></td>
 477           <td class="paramtype">uint&#160;</td>
 478           <td class="paramname"><em>mapy_step_x</em>, </td>
 479         </tr>
 480         <tr>
 481           <td class="paramkey"></td>
 482           <td></td>
 483           <td class="paramtype">uint&#160;</td>
 484           <td class="paramname"><em>mapy_stride_y</em>, </td>
 485         </tr>
 486         <tr>
 487           <td class="paramkey"></td>
 488           <td></td>
 489           <td class="paramtype">uint&#160;</td>
 490           <td class="paramname"><em>mapy_step_y</em>, </td>
 491         </tr>
 492         <tr>
 493           <td class="paramkey"></td>
 494           <td></td>
 495           <td class="paramtype">uint&#160;</td>
 496           <td class="paramname"><em>mapy_offset_first_element_in_bytes</em>, </td>
 497         </tr>
 498         <tr>
 499           <td class="paramkey"></td>
 500           <td></td>
 501           <td class="paramtype">const float&#160;</td>
 502           <td class="paramname"><em>width</em>, </td>
 503         </tr>
 504         <tr>
 505           <td class="paramkey"></td>
 506           <td></td>
 507           <td class="paramtype">const float&#160;</td>
 508           <td class="paramname"><em>height</em>&#160;</td>
 509         </tr>
 510         <tr>
 511           <td></td>
 512           <td>)</td>
 513           <td></td><td></td>
 514         </tr>
 515       </table>
 516 </div><div class="memdoc">
 517
 518 <p>Performs a remapping of an input image to an output given two remapping image using nearest neighbor as interpolation. </p>
 519 <p>This kernel performs remapping with this method of pixel coordinate translation: out(x,y) = in(mapx(x,y), mapy(x,y));</p>
 520 <dl class="params"><dt>Parameters</dt><dd>
 521   <table class="params">
 522     <tr><td class="paramdir">[in]</td><td class="paramname">in_ptr</td><td>Pointer to the source image. Supported data types: U8. </td></tr>
 523     <tr><td class="paramdir">[in]</td><td class="paramname">in_stride_x</td><td>Stride of the source image in X dimension (in bytes) </td></tr>
 524     <tr><td class="paramdir">[in]</td><td class="paramname">in_step_x</td><td>in_stride_x * number of elements along X processed per work item (in bytes) </td></tr>
 525     <tr><td class="paramdir">[in]</td><td class="paramname">in_stride_y</td><td>Stride of the source image in Y dimension (in bytes) </td></tr>
 526     <tr><td class="paramdir">[in]</td><td class="paramname">in_step_y</td><td>in_stride_y * number of elements along Y processed per work item (in bytes) </td></tr>
 527     <tr><td class="paramdir">[in]</td><td class="paramname">in_offset_first_element_in_bytes</td><td>Offset of the first element in the source image </td></tr>
 528     <tr><td class="paramdir">[out]</td><td class="paramname">out_ptr</td><td>Pointer to the destination image. Supported data types: U8. </td></tr>
 529     <tr><td class="paramdir">[in]</td><td class="paramname">out_stride_x</td><td>Stride of the destination image in X dimension (in bytes) </td></tr>
 530     <tr><td class="paramdir">[in]</td><td class="paramname">out_step_x</td><td>out_stride_x * number of elements along X processed per work item (in bytes) </td></tr>
 531     <tr><td class="paramdir">[in]</td><td class="paramname">out_stride_y</td><td>Stride of the destination image in Y dimension (in bytes) </td></tr>
 532     <tr><td class="paramdir">[in]</td><td class="paramname">out_step_y</td><td>out_stride_y * number of elements along Y processed per work item (in bytes) </td></tr>
 533     <tr><td class="paramdir">[in]</td><td class="paramname">out_offset_first_element_in_bytes</td><td>Offset of the first element in the destination image </td></tr>
 534     <tr><td class="paramdir">[in]</td><td class="paramname">mapx_ptr</td><td>Pointer to the x remapping image. Supported data types: F32. </td></tr>
 535     <tr><td class="paramdir">[in]</td><td class="paramname">mapx_stride_x</td><td>Stride of the remapping image in X dimension (in bytes) </td></tr>
 536     <tr><td class="paramdir">[in]</td><td class="paramname">mapx_step_x</td><td>mapx_stride_x * number of elements along X processed per work item (in bytes) </td></tr>
 537     <tr><td class="paramdir">[in]</td><td class="paramname">mapx_stride_y</td><td>Stride of the remapping image in Y dimension (in bytes) </td></tr>
 538     <tr><td class="paramdir">[in]</td><td class="paramname">mapx_step_y</td><td>mapy_stride_y * number of elements along Y processed per work item (in bytes) </td></tr>
 539     <tr><td class="paramdir">[in]</td><td class="paramname">mapx_offset_first_element_in_bytes</td><td>Offset of the first element in the remapping image </td></tr>
 540     <tr><td class="paramdir">[in]</td><td class="paramname">mapy_ptr</td><td>Pointer to the x remapping image. Supported data types: F32. </td></tr>
 541     <tr><td class="paramdir">[in]</td><td class="paramname">mapy_stride_x</td><td>Stride of the remapping image in X dimension (in bytes) </td></tr>
 542     <tr><td class="paramdir">[in]</td><td class="paramname">mapy_step_x</td><td>mapy_stride_x * number of elements along X processed per work item (in bytes) </td></tr>
 543     <tr><td class="paramdir">[in]</td><td class="paramname">mapy_stride_y</td><td>Stride of the remapping image in Y dimension (in bytes) </td></tr>
 544     <tr><td class="paramdir">[in]</td><td class="paramname">mapy_step_y</td><td>mapy_stride_y * number of elements along Y processed per work item (in bytes) </td></tr>
 545     <tr><td class="paramdir">[in]</td><td class="paramname">mapy_offset_first_element_in_bytes</td><td>Offset of the first element in the remapping image </td></tr>
 546     <tr><td class="paramdir">[in]</td><td class="paramname">width</td><td>Width of the input image </td></tr>
 547     <tr><td class="paramdir">[in]</td><td class="paramname">height</td><td>Height of the input image </td></tr>
 548   </table>
 549   </dd>
 550 </dl>
 551
 552 <p>Definition at line <a class="el" href="remap_8cl_source.xhtml#l00059">59</a> of file <a class="el" href="remap_8cl_source.xhtml">remap.cl</a>.</p>
 553
 554 <p>References <a class="el" href="warp__helpers_8h_source.xhtml#l00033">clamp_to_border()</a>, <a class="el" href="helpers_8h_source.xhtml#l00073">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="helpers_8h_source.xhtml#l00076">CONVERT_TO_IMAGE_STRUCT_NO_STEP</a>, <a class="el" href="helpers_8h_source.xhtml#l00097">Image::ptr</a>, and <a class="el" href="warp__helpers_8h_source.xhtml#l00045">read_texels4()</a>.</p>
 555 <div class="fragment"><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;{</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> in   = <a class="code" href="helpers_8h.xhtml#a4334a4a76f8e9628c0fb9e1acf616e2a">CONVERT_TO_IMAGE_STRUCT_NO_STEP</a>(in);</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> out  = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(out);</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> mapx = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(mapx);</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> mapy = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(mapy);</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    float4 mapx_coords = vload4(0, (__global <span class="keywordtype">float</span> *)mapx.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    float4 mapy_coords = vload4(0, (__global <span class="keywordtype">float</span> *)mapy.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    float8 map_coords  = (float8)(mapx_coords.s0, mapy_coords.s0, mapx_coords.s1, mapy_coords.s1,</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;                                  mapx_coords.s2, mapy_coords.s2, mapx_coords.s3, mapy_coords.s3);</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    map_coords += (float8)(0.5f);</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    vstore4(<a class="code" href="warp__helpers_8h.xhtml#aba42442a4c991cdbb52727fa370676f1">read_texels4</a>(&amp;in, convert_int8(<a class="code" href="warp__helpers_8h.xhtml#adbdf2ca9e8fe0b67f9359929ef743126">clamp_to_border</a>(map_coords, width, height))), 0, out.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;}</div><div class="ttc" id="warp__helpers_8h_xhtml_adbdf2ca9e8fe0b67f9359929ef743126"><div class="ttname"><a href="warp__helpers_8h.xhtml#adbdf2ca9e8fe0b67f9359929ef743126">clamp_to_border</a></div><div class="ttdeci">const float8 clamp_to_border(float8 coords, const float width, const float height)</div><div class="ttdoc">Clamps the given coordinates to the borders. </div><div class="ttdef"><b>Definition:</b> <a href="warp__helpers_8h_source.xhtml#l00033">warp_helpers.h:33</a></div></div>
 556 <div class="ttc" id="helpers_8h_xhtml_a4334a4a76f8e9628c0fb9e1acf616e2a"><div class="ttname"><a href="helpers_8h.xhtml#a4334a4a76f8e9628c0fb9e1acf616e2a">CONVERT_TO_IMAGE_STRUCT_NO_STEP</a></div><div class="ttdeci">#define CONVERT_TO_IMAGE_STRUCT_NO_STEP(name)</div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00076">helpers.h:76</a></div></div>
 557 <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>
 558 <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>
 559 <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>
 560 <div class="ttc" id="warp__helpers_8h_xhtml_aba42442a4c991cdbb52727fa370676f1"><div class="ttname"><a href="warp__helpers_8h.xhtml#aba42442a4c991cdbb52727fa370676f1">read_texels4</a></div><div class="ttdeci">const DATA_TYPE4 read_texels4(const Image *in, const int8 coords)</div><div class="ttdoc">Reads four texels from the input image. </div><div class="ttdef"><b>Definition:</b> <a href="warp__helpers_8h_source.xhtml#l00045">warp_helpers.h:45</a></div></div>
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 570     <li class="footer">Generated on Wed Apr 12 2017 14:26:05 for ARM Compute Library by
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