documentation/scale_8cl.xhtml

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 115 <div class="header">
 116   <div class="summary">
 117 <a href="#func-members">Functions</a>  </div>
 118   <div class="headertitle">
 119 <div class="title">scale.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 <code>#include &quot;<a class="el" href="warp__helpers_8h_source.xhtml">warp_helpers.h</a>&quot;</code><br />
 124 </div>
 125 <p><a href="scale_8cl_source.xhtml">Go to the source code of this file.</a></p>
 126 <table class="memberdecls">
 127 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
 128 Functions</h2></td></tr>
 129 <tr class="memitem:a55c710b814464d9b8982c4eb6ca04dee"><td class="memItemLeft" align="right" valign="top">const float8&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="scale_8cl.xhtml#a55c710b814464d9b8982c4eb6ca04dee">transform_nearest</a> (const float2 coord, const float2 scale)</td></tr>
 130 <tr class="memdesc:a55c710b814464d9b8982c4eb6ca04dee"><td class="mdescLeft">&#160;</td><td class="mdescRight">Transforms four 2D coordinates.  <a href="#a55c710b814464d9b8982c4eb6ca04dee">More...</a><br /></td></tr>
 131 <tr class="separator:a55c710b814464d9b8982c4eb6ca04dee"><td class="memSeparator" colspan="2">&#160;</td></tr>
 132 <tr class="memitem:a1990e87858b15b8fce3f63965fb9b86c"><td class="memItemLeft" align="right" valign="top">const float8&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="scale_8cl.xhtml#a1990e87858b15b8fce3f63965fb9b86c">transform_bilinear</a> (const float2 coord, const float2 scale)</td></tr>
 133 <tr class="memdesc:a1990e87858b15b8fce3f63965fb9b86c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Transforms four 2D coordinates.  <a href="#a1990e87858b15b8fce3f63965fb9b86c">More...</a><br /></td></tr>
 134 <tr class="separator:a1990e87858b15b8fce3f63965fb9b86c"><td class="memSeparator" colspan="2">&#160;</td></tr>
 135 <tr class="memitem:ace0505bd2794cb971269d525953b9b78"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="scale_8cl.xhtml#ace0505bd2794cb971269d525953b9b78">scale_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, const float input_width, const float input_height, const float scale_x, const float scale_y)</td></tr>
 136 <tr class="memdesc:ace0505bd2794cb971269d525953b9b78"><td class="mdescLeft">&#160;</td><td class="mdescRight">Performs an affine transformation on an image interpolating with the NEAREAST NEIGHBOUR method.  <a href="#ace0505bd2794cb971269d525953b9b78">More...</a><br /></td></tr>
 137 <tr class="separator:ace0505bd2794cb971269d525953b9b78"><td class="memSeparator" colspan="2">&#160;</td></tr>
 138 <tr class="memitem:afafd19fca28a0b88836611dae58ed787"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="scale_8cl.xhtml#afafd19fca28a0b88836611dae58ed787">scale_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, const float input_width, const float input_height, const float scale_x, const float scale_y)</td></tr>
 139 <tr class="memdesc:afafd19fca28a0b88836611dae58ed787"><td class="mdescLeft">&#160;</td><td class="mdescRight">Performs an affine transformation on an image interpolating with the BILINEAR method.  <a href="#afafd19fca28a0b88836611dae58ed787">More...</a><br /></td></tr>
 140 <tr class="separator:afafd19fca28a0b88836611dae58ed787"><td class="memSeparator" colspan="2">&#160;</td></tr>
 141 </table>
 142 <h2 class="groupheader">Function Documentation</h2>
 143 <a class="anchor" id="afafd19fca28a0b88836611dae58ed787"></a>
 144 <div class="memitem">
 145 <div class="memproto">
 146       <table class="memname">
 147         <tr>
 148           <td class="memname">__kernel void scale_bilinear </td>
 149           <td>(</td>
 150           <td class="paramtype">__global uchar *&#160;</td>
 151           <td class="paramname"><em>in_ptr</em>, </td>
 152         </tr>
 153         <tr>
 154           <td class="paramkey"></td>
 155           <td></td>
 156           <td class="paramtype">uint&#160;</td>
 157           <td class="paramname"><em>in_stride_x</em>, </td>
 158         </tr>
 159         <tr>
 160           <td class="paramkey"></td>
 161           <td></td>
 162           <td class="paramtype">uint&#160;</td>
 163           <td class="paramname"><em>in_step_x</em>, </td>
 164         </tr>
 165         <tr>
 166           <td class="paramkey"></td>
 167           <td></td>
 168           <td class="paramtype">uint&#160;</td>
 169           <td class="paramname"><em>in_stride_y</em>, </td>
 170         </tr>
 171         <tr>
 172           <td class="paramkey"></td>
 173           <td></td>
 174           <td class="paramtype">uint&#160;</td>
 175           <td class="paramname"><em>in_step_y</em>, </td>
 176         </tr>
 177         <tr>
 178           <td class="paramkey"></td>
 179           <td></td>
 180           <td class="paramtype">uint&#160;</td>
 181           <td class="paramname"><em>in_offset_first_element_in_bytes</em>, </td>
 182         </tr>
 183         <tr>
 184           <td class="paramkey"></td>
 185           <td></td>
 186           <td class="paramtype">__global uchar *&#160;</td>
 187           <td class="paramname"><em>out_ptr</em>, </td>
 188         </tr>
 189         <tr>
 190           <td class="paramkey"></td>
 191           <td></td>
 192           <td class="paramtype">uint&#160;</td>
 193           <td class="paramname"><em>out_stride_x</em>, </td>
 194         </tr>
 195         <tr>
 196           <td class="paramkey"></td>
 197           <td></td>
 198           <td class="paramtype">uint&#160;</td>
 199           <td class="paramname"><em>out_step_x</em>, </td>
 200         </tr>
 201         <tr>
 202           <td class="paramkey"></td>
 203           <td></td>
 204           <td class="paramtype">uint&#160;</td>
 205           <td class="paramname"><em>out_stride_y</em>, </td>
 206         </tr>
 207         <tr>
 208           <td class="paramkey"></td>
 209           <td></td>
 210           <td class="paramtype">uint&#160;</td>
 211           <td class="paramname"><em>out_step_y</em>, </td>
 212         </tr>
 213         <tr>
 214           <td class="paramkey"></td>
 215           <td></td>
 216           <td class="paramtype">uint&#160;</td>
 217           <td class="paramname"><em>out_offset_first_element_in_bytes</em>, </td>
 218         </tr>
 219         <tr>
 220           <td class="paramkey"></td>
 221           <td></td>
 222           <td class="paramtype">const float&#160;</td>
 223           <td class="paramname"><em>input_width</em>, </td>
 224         </tr>
 225         <tr>
 226           <td class="paramkey"></td>
 227           <td></td>
 228           <td class="paramtype">const float&#160;</td>
 229           <td class="paramname"><em>input_height</em>, </td>
 230         </tr>
 231         <tr>
 232           <td class="paramkey"></td>
 233           <td></td>
 234           <td class="paramtype">const float&#160;</td>
 235           <td class="paramname"><em>scale_x</em>, </td>
 236         </tr>
 237         <tr>
 238           <td class="paramkey"></td>
 239           <td></td>
 240           <td class="paramtype">const float&#160;</td>
 241           <td class="paramname"><em>scale_y</em>&#160;</td>
 242         </tr>
 243         <tr>
 244           <td></td>
 245           <td>)</td>
 246           <td></td><td></td>
 247         </tr>
 248       </table>
 249 </div><div class="memdoc">
 250
 251 <p>Performs an affine transformation on an image interpolating with the BILINEAR method. </p>
 252 <dl class="section note"><dt>Note</dt><dd>Sampling policy to used is passed as -DSAMPLING_POLICY_(TYPE) e.g. -DSAMPLING_POLICY_TOP_LEFT</dd></dl>
 253 <dl class="params"><dt>Parameters</dt><dd>
 254   <table class="params">
 255     <tr><td class="paramdir">[in]</td><td class="paramname">in_ptr</td><td>Pointer to the source image. Supported data types: U8, S16. </td></tr>
 256     <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>
 257     <tr><td class="paramdir">[in]</td><td class="paramname">in_step_x</td><td>src_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
 258     <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>
 259     <tr><td class="paramdir">[in]</td><td class="paramname">in_step_y</td><td>src_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
 260     <tr><td class="paramdir">[in]</td><td class="paramname">in_offset_first_element_in_bytes</td><td>The offset of the first element in the source image </td></tr>
 261     <tr><td class="paramdir">[out]</td><td class="paramname">out_ptr</td><td>Pointer to the destination image. Supported data types: U8, S16. (Must be the same as the input) </td></tr>
 262     <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>
 263     <tr><td class="paramdir">[in]</td><td class="paramname">out_step_x</td><td>dst_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
 264     <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>
 265     <tr><td class="paramdir">[in]</td><td class="paramname">out_step_y</td><td>dst_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
 266     <tr><td class="paramdir">[in]</td><td class="paramname">out_offset_first_element_in_bytes</td><td>The offset of the first element in the destination image </td></tr>
 267     <tr><td class="paramdir">[in]</td><td class="paramname">input_width</td><td>Input image width </td></tr>
 268     <tr><td class="paramdir">[in]</td><td class="paramname">input_height</td><td>Input image height </td></tr>
 269     <tr><td class="paramdir">[in]</td><td class="paramname">scale_x</td><td>The scale factor along x dimension </td></tr>
 270     <tr><td class="paramdir">[in]</td><td class="paramname">scale_y</td><td>The scale factor along y dimension </td></tr>
 271   </table>
 272   </dd>
 273 </dl>
 274
 275 <p>Definition at line <a class="el" href="scale_8cl_source.xhtml#l00122">122</a> of file <a class="el" href="scale_8cl_source.xhtml">scale.cl</a>.</p>
 276
 277 <p>References <a class="el" href="warp__helpers_8h_source.xhtml#l00094">bilinear_interpolate_with_border()</a>, <a class="el" href="helpers_8h_source.xhtml#l00104">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="helpers_8h_source.xhtml#l00107">CONVERT_TO_IMAGE_STRUCT_NO_STEP</a>, <a class="el" href="convolution3x3_8cl_source.xhtml#l00027">DATA_TYPE</a>, <a class="el" href="warp__helpers_8h_source.xhtml#l00067">get_current_coords()</a>, <a class="el" href="helpers_8h_source.xhtml#l00144">Image::ptr</a>, and <a class="el" href="scale_8cl_source.xhtml#l00049">transform_bilinear()</a>.</p>
 278 <div class="fragment"><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;{</div><div class="line"><a name="l00130"></a><span class="lineno">  130</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="l00131"></a><span class="lineno">  131</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="l00132"></a><span class="lineno">  132</span>&#160;    <span class="keyword">const</span> float2 r   = (float2)(scale_x, scale_y);</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;    <span class="keyword">const</span> float8 tc  = <a class="code" href="scale_8cl.xhtml#a1990e87858b15b8fce3f63965fb9b86c">transform_bilinear</a>(<a class="code" href="warp__helpers_8h.xhtml#a4caaeeb51ea58015267a9974675226d1">get_current_coords</a>(), r);</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;    vstore4(<a class="code" href="warp__helpers_8h.xhtml#a8eda58d341afa44da00ebf47f9349499">bilinear_interpolate_with_border</a>(&amp;in, tc, input_width, input_height, BORDER_SIZE), 0, (__global <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> *)out.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;}</div><div class="ttc" id="convolution3x3_8cl_xhtml_afb8c72ce35c4a1f4a2588d6573e54aa1"><div class="ttname"><a href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a></div><div class="ttdeci">#define DATA_TYPE</div><div class="ttdef"><b>Definition:</b> <a href="convolution3x3_8cl_source.xhtml#l00027">convolution3x3.cl:27</a></div></div>
 279 <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#l00107">helpers.h:107</a></div></div>
 280 <div class="ttc" id="warp__helpers_8h_xhtml_a8eda58d341afa44da00ebf47f9349499"><div class="ttname"><a href="warp__helpers_8h.xhtml#a8eda58d341afa44da00ebf47f9349499">bilinear_interpolate_with_border</a></div><div class="ttdeci">const DATA_TYPE4 bilinear_interpolate_with_border(const Image *in, const float8 coords, const float width, const float height, const float border_size)</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#l00094">warp_helpers.h:94</a></div></div>
 281 <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#l00104">helpers.h:104</a></div></div>
 282 <div class="ttc" id="scale_8cl_xhtml_a1990e87858b15b8fce3f63965fb9b86c"><div class="ttname"><a href="scale_8cl.xhtml#a1990e87858b15b8fce3f63965fb9b86c">transform_bilinear</a></div><div class="ttdeci">const float8 transform_bilinear(const float2 coord, const float2 scale)</div><div class="ttdoc">Transforms four 2D coordinates. </div><div class="ttdef"><b>Definition:</b> <a href="scale_8cl_source.xhtml#l00049">scale.cl:49</a></div></div>
 283 <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#l00142">helpers.h:142</a></div></div>
 284 <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#l00144">helpers.h:144</a></div></div>
 285 <div class="ttc" id="warp__helpers_8h_xhtml_a4caaeeb51ea58015267a9974675226d1"><div class="ttname"><a href="warp__helpers_8h.xhtml#a4caaeeb51ea58015267a9974675226d1">get_current_coords</a></div><div class="ttdeci">const float2 get_current_coords()</div><div class="ttdoc">Returns the current thread coordinates. </div><div class="ttdef"><b>Definition:</b> <a href="warp__helpers_8h_source.xhtml#l00067">warp_helpers.h:67</a></div></div>
 286 </div><!-- fragment -->
 287 </div>
 288 </div>
 289 <a class="anchor" id="ace0505bd2794cb971269d525953b9b78"></a>
 290 <div class="memitem">
 291 <div class="memproto">
 292       <table class="memname">
 293         <tr>
 294           <td class="memname">__kernel void scale_nearest_neighbour </td>
 295           <td>(</td>
 296           <td class="paramtype">__global uchar *&#160;</td>
 297           <td class="paramname"><em>in_ptr</em>, </td>
 298         </tr>
 299         <tr>
 300           <td class="paramkey"></td>
 301           <td></td>
 302           <td class="paramtype">uint&#160;</td>
 303           <td class="paramname"><em>in_stride_x</em>, </td>
 304         </tr>
 305         <tr>
 306           <td class="paramkey"></td>
 307           <td></td>
 308           <td class="paramtype">uint&#160;</td>
 309           <td class="paramname"><em>in_step_x</em>, </td>
 310         </tr>
 311         <tr>
 312           <td class="paramkey"></td>
 313           <td></td>
 314           <td class="paramtype">uint&#160;</td>
 315           <td class="paramname"><em>in_stride_y</em>, </td>
 316         </tr>
 317         <tr>
 318           <td class="paramkey"></td>
 319           <td></td>
 320           <td class="paramtype">uint&#160;</td>
 321           <td class="paramname"><em>in_step_y</em>, </td>
 322         </tr>
 323         <tr>
 324           <td class="paramkey"></td>
 325           <td></td>
 326           <td class="paramtype">uint&#160;</td>
 327           <td class="paramname"><em>in_offset_first_element_in_bytes</em>, </td>
 328         </tr>
 329         <tr>
 330           <td class="paramkey"></td>
 331           <td></td>
 332           <td class="paramtype">__global uchar *&#160;</td>
 333           <td class="paramname"><em>out_ptr</em>, </td>
 334         </tr>
 335         <tr>
 336           <td class="paramkey"></td>
 337           <td></td>
 338           <td class="paramtype">uint&#160;</td>
 339           <td class="paramname"><em>out_stride_x</em>, </td>
 340         </tr>
 341         <tr>
 342           <td class="paramkey"></td>
 343           <td></td>
 344           <td class="paramtype">uint&#160;</td>
 345           <td class="paramname"><em>out_step_x</em>, </td>
 346         </tr>
 347         <tr>
 348           <td class="paramkey"></td>
 349           <td></td>
 350           <td class="paramtype">uint&#160;</td>
 351           <td class="paramname"><em>out_stride_y</em>, </td>
 352         </tr>
 353         <tr>
 354           <td class="paramkey"></td>
 355           <td></td>
 356           <td class="paramtype">uint&#160;</td>
 357           <td class="paramname"><em>out_step_y</em>, </td>
 358         </tr>
 359         <tr>
 360           <td class="paramkey"></td>
 361           <td></td>
 362           <td class="paramtype">uint&#160;</td>
 363           <td class="paramname"><em>out_offset_first_element_in_bytes</em>, </td>
 364         </tr>
 365         <tr>
 366           <td class="paramkey"></td>
 367           <td></td>
 368           <td class="paramtype">const float&#160;</td>
 369           <td class="paramname"><em>input_width</em>, </td>
 370         </tr>
 371         <tr>
 372           <td class="paramkey"></td>
 373           <td></td>
 374           <td class="paramtype">const float&#160;</td>
 375           <td class="paramname"><em>input_height</em>, </td>
 376         </tr>
 377         <tr>
 378           <td class="paramkey"></td>
 379           <td></td>
 380           <td class="paramtype">const float&#160;</td>
 381           <td class="paramname"><em>scale_x</em>, </td>
 382         </tr>
 383         <tr>
 384           <td class="paramkey"></td>
 385           <td></td>
 386           <td class="paramtype">const float&#160;</td>
 387           <td class="paramname"><em>scale_y</em>&#160;</td>
 388         </tr>
 389         <tr>
 390           <td></td>
 391           <td>)</td>
 392           <td></td><td></td>
 393         </tr>
 394       </table>
 395 </div><div class="memdoc">
 396
 397 <p>Performs an affine transformation on an image interpolating with the NEAREAST NEIGHBOUR method. </p>
 398 <p>Input and output are single channel U8 or S16.</p>
 399 <dl class="section note"><dt>Note</dt><dd>Sampling policy to used is passed as -DSAMPLING_POLICY_(TYPE) e.g. -DSAMPLING_POLICY_TOP_LEFT</dd></dl>
 400 <dl class="params"><dt>Parameters</dt><dd>
 401   <table class="params">
 402     <tr><td class="paramdir">[in]</td><td class="paramname">in_ptr</td><td>Pointer to the source image. Supported data types: U8, S16. </td></tr>
 403     <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>
 404     <tr><td class="paramdir">[in]</td><td class="paramname">in_step_x</td><td>src_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
 405     <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>
 406     <tr><td class="paramdir">[in]</td><td class="paramname">in_step_y</td><td>src_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
 407     <tr><td class="paramdir">[in]</td><td class="paramname">in_offset_first_element_in_bytes</td><td>The offset of the first element in the source image </td></tr>
 408     <tr><td class="paramdir">[out]</td><td class="paramname">out_ptr</td><td>Pointer to the destination image. Supported data types: U8, S16. (Must be the same as the input) </td></tr>
 409     <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>
 410     <tr><td class="paramdir">[in]</td><td class="paramname">out_step_x</td><td>dst_stride_x * number of elements along X processed per workitem(in bytes) </td></tr>
 411     <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>
 412     <tr><td class="paramdir">[in]</td><td class="paramname">out_step_y</td><td>dst_stride_y * number of elements along Y processed per workitem(in bytes) </td></tr>
 413     <tr><td class="paramdir">[in]</td><td class="paramname">out_offset_first_element_in_bytes</td><td>The offset of the first element in the destination image </td></tr>
 414     <tr><td class="paramdir">[in]</td><td class="paramname">input_width</td><td>Input image width </td></tr>
 415     <tr><td class="paramdir">[in]</td><td class="paramname">input_height</td><td>Input image height </td></tr>
 416     <tr><td class="paramdir">[in]</td><td class="paramname">scale_x</td><td>The scale factor along x dimension </td></tr>
 417     <tr><td class="paramdir">[in]</td><td class="paramname">scale_y</td><td>The scale factor along y dimension </td></tr>
 418   </table>
 419   </dd>
 420 </dl>
 421
 422 <p>Definition at line <a class="el" href="scale_8cl_source.xhtml#l00086">86</a> of file <a class="el" href="scale_8cl_source.xhtml">scale.cl</a>.</p>
 423
 424 <p>References <a class="el" href="warp__helpers_8h_source.xhtml#l00034">clamp_to_border_with_size()</a>, <a class="el" href="helpers_8h_source.xhtml#l00104">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="helpers_8h_source.xhtml#l00107">CONVERT_TO_IMAGE_STRUCT_NO_STEP</a>, <a class="el" href="convolution3x3_8cl_source.xhtml#l00027">DATA_TYPE</a>, <a class="el" href="warp__helpers_8h_source.xhtml#l00067">get_current_coords()</a>, <a class="el" href="helpers_8h_source.xhtml#l00144">Image::ptr</a>, <a class="el" href="warp__helpers_8h_source.xhtml#l00058">read_texels4()</a>, and <a class="el" href="scale_8cl_source.xhtml#l00034">transform_nearest()</a>.</p>
 425 <div class="fragment"><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;{</div><div class="line"><a name="l00094"></a><span class="lineno">   94</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="l00095"></a><span class="lineno">   95</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="l00096"></a><span class="lineno">   96</span>&#160;    <span class="keyword">const</span> float2 r   = (float2)(scale_x, scale_y);</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    <span class="keyword">const</span> float8 tc  = <a class="code" href="warp__helpers_8h.xhtml#aaef9851523cbc6f833700f0eb572002b">clamp_to_border_with_size</a>(<a class="code" href="scale_8cl.xhtml#a55c710b814464d9b8982c4eb6ca04dee">transform_nearest</a>(<a class="code" href="warp__helpers_8h.xhtml#a4caaeeb51ea58015267a9974675226d1">get_current_coords</a>(), r), input_width, input_height, BORDER_SIZE);</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;    vstore4(<a class="code" href="warp__helpers_8h.xhtml#aba42442a4c991cdbb52727fa370676f1">read_texels4</a>(&amp;in, convert_int8(tc)), 0, (__global <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> *)out.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;}</div><div class="ttc" id="convolution3x3_8cl_xhtml_afb8c72ce35c4a1f4a2588d6573e54aa1"><div class="ttname"><a href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a></div><div class="ttdeci">#define DATA_TYPE</div><div class="ttdef"><b>Definition:</b> <a href="convolution3x3_8cl_source.xhtml#l00027">convolution3x3.cl:27</a></div></div>
 426 <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#l00107">helpers.h:107</a></div></div>
 427 <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#l00104">helpers.h:104</a></div></div>
 428 <div class="ttc" id="scale_8cl_xhtml_a55c710b814464d9b8982c4eb6ca04dee"><div class="ttname"><a href="scale_8cl.xhtml#a55c710b814464d9b8982c4eb6ca04dee">transform_nearest</a></div><div class="ttdeci">const float8 transform_nearest(const float2 coord, const float2 scale)</div><div class="ttdoc">Transforms four 2D coordinates. </div><div class="ttdef"><b>Definition:</b> <a href="scale_8cl_source.xhtml#l00034">scale.cl:34</a></div></div>
 429 <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#l00142">helpers.h:142</a></div></div>
 430 <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#l00144">helpers.h:144</a></div></div>
 431 <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#l00058">warp_helpers.h:58</a></div></div>
 432 <div class="ttc" id="warp__helpers_8h_xhtml_aaef9851523cbc6f833700f0eb572002b"><div class="ttname"><a href="warp__helpers_8h.xhtml#aaef9851523cbc6f833700f0eb572002b">clamp_to_border_with_size</a></div><div class="ttdeci">const float8 clamp_to_border_with_size(float8 coords, const float width, const float height, const float border_size)</div><div class="ttdoc">Clamps the given coordinates to the borders according to the border size. </div><div class="ttdef"><b>Definition:</b> <a href="warp__helpers_8h_source.xhtml#l00034">warp_helpers.h:34</a></div></div>
 433 <div class="ttc" id="warp__helpers_8h_xhtml_a4caaeeb51ea58015267a9974675226d1"><div class="ttname"><a href="warp__helpers_8h.xhtml#a4caaeeb51ea58015267a9974675226d1">get_current_coords</a></div><div class="ttdeci">const float2 get_current_coords()</div><div class="ttdoc">Returns the current thread coordinates. </div><div class="ttdef"><b>Definition:</b> <a href="warp__helpers_8h_source.xhtml#l00067">warp_helpers.h:67</a></div></div>
 434 </div><!-- fragment -->
 435 </div>
 436 </div>
 437 <a class="anchor" id="a1990e87858b15b8fce3f63965fb9b86c"></a>
 438 <div class="memitem">
 439 <div class="memproto">
 440 <table class="mlabels">
 441   <tr>
 442   <td class="mlabels-left">
 443       <table class="memname">
 444         <tr>
 445           <td class="memname">const float8 transform_bilinear </td>
 446           <td>(</td>
 447           <td class="paramtype">const float2&#160;</td>
 448           <td class="paramname"><em>coord</em>, </td>
 449         </tr>
 450         <tr>
 451           <td class="paramkey"></td>
 452           <td></td>
 453           <td class="paramtype">const float2&#160;</td>
 454           <td class="paramname"><em>scale</em>&#160;</td>
 455         </tr>
 456         <tr>
 457           <td></td>
 458           <td>)</td>
 459           <td></td><td></td>
 460         </tr>
 461       </table>
 462   </td>
 463   <td class="mlabels-right">
 464 <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
 465   </tr>
 466 </table>
 467 </div><div class="memdoc">
 468
 469 <p>Transforms four 2D coordinates. </p>
 470 <p>This is used to map the output coordinates to the input coordinates.</p>
 471 <dl class="params"><dt>Parameters</dt><dd>
 472   <table class="params">
 473     <tr><td class="paramdir">[in]</td><td class="paramname">coord</td><td>2D coordinates to transform. </td></tr>
 474     <tr><td class="paramdir">[in]</td><td class="paramname">scale</td><td>input/output scale ratio</td></tr>
 475   </table>
 476   </dd>
 477 </dl>
 478 <dl class="section return"><dt>Returns</dt><dd>a float8 containing 4 2D transformed values in the input image. </dd></dl>
 479
 480 <p>Definition at line <a class="el" href="scale_8cl_source.xhtml#l00049">49</a> of file <a class="el" href="scale_8cl_source.xhtml">scale.cl</a>.</p>
 481
 482 <p>Referenced by <a class="el" href="scale_8cl_source.xhtml#l00122">scale_bilinear()</a>.</p>
 483 <div class="fragment"><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;{</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    <span class="keyword">const</span> float4 in_x_coords = (float4)(coord.s0, 1 + coord.s0, 2 + coord.s0, 3 + coord.s0);</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="preprocessor">#ifdef SAMPLING_POLICY_TOP_LEFT</span></div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    <span class="keyword">const</span> float4 new_x = in_x_coords * (float4)(<a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#acec6d8ad52a28972fa74e071c1a63b6a">scale</a>.s0);</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;    <span class="keyword">const</span> float4 new_y = (float4)(coord.s1 * <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#acec6d8ad52a28972fa74e071c1a63b6a">scale</a>.s1);</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    <span class="keywordflow">return</span> (float8)(new_x.s0, new_y.s0, new_x.s1, new_y.s1, new_x.s2, new_y.s2, new_x.s3, new_y.s3);</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="preprocessor">#elif SAMPLING_POLICY_CENTER</span></div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;    <span class="keyword">const</span> float4 new_x = (in_x_coords + ((float4)(0.5f))) * (float4)(<a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#acec6d8ad52a28972fa74e071c1a63b6a">scale</a>.s0) - (float4)(0.5f);</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    <span class="keyword">const</span> float4 new_y = (float4)((coord.s1 + 0.5f) * <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#acec6d8ad52a28972fa74e071c1a63b6a">scale</a>.s1 - 0.5f);</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    <span class="keywordflow">return</span> (float8)(new_x.s0, new_y.s0, new_x.s1, new_y.s1, new_x.s2, new_y.s2, new_x.s3, new_y.s3);</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="preprocessor">#else </span><span class="comment">/* SAMPLING_POLICY */</span><span class="preprocessor"></span></div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="preprocessor">#error(&quot;Unsupported sampling policy&quot;);</span></div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* SAMPLING_POLICY */</span><span class="preprocessor"></span></div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;}</div><div class="ttc" id="namespacearm__compute_1_1test_1_1validation_xhtml_acec6d8ad52a28972fa74e071c1a63b6a"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation.xhtml#acec6d8ad52a28972fa74e071c1a63b6a">arm_compute::test::validation::scale</a></div><div class="ttdeci">scale</div><div class="ttdef"><b>Definition:</b> <a href="_n_e_o_n_2_pixel_wise_multiplication_8cpp_source.xhtml#l00178">PixelWiseMultiplication.cpp:178</a></div></div>
 484 </div><!-- fragment -->
 485 </div>
 486 </div>
 487 <a class="anchor" id="a55c710b814464d9b8982c4eb6ca04dee"></a>
 488 <div class="memitem">
 489 <div class="memproto">
 490 <table class="mlabels">
 491   <tr>
 492   <td class="mlabels-left">
 493       <table class="memname">
 494         <tr>
 495           <td class="memname">const float8 transform_nearest </td>
 496           <td>(</td>
 497           <td class="paramtype">const float2&#160;</td>
 498           <td class="paramname"><em>coord</em>, </td>
 499         </tr>
 500         <tr>
 501           <td class="paramkey"></td>
 502           <td></td>
 503           <td class="paramtype">const float2&#160;</td>
 504           <td class="paramname"><em>scale</em>&#160;</td>
 505         </tr>
 506         <tr>
 507           <td></td>
 508           <td>)</td>
 509           <td></td><td></td>
 510         </tr>
 511       </table>
 512   </td>
 513   <td class="mlabels-right">
 514 <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
 515   </tr>
 516 </table>
 517 </div><div class="memdoc">
 518
 519 <p>Transforms four 2D coordinates. </p>
 520 <p>This is used to map the output coordinates to the input coordinates.</p>
 521 <dl class="params"><dt>Parameters</dt><dd>
 522   <table class="params">
 523     <tr><td class="paramdir">[in]</td><td class="paramname">coord</td><td>2D coordinates to transform. </td></tr>
 524     <tr><td class="paramdir">[in]</td><td class="paramname">scale</td><td>input/output scale ratio</td></tr>
 525   </table>
 526   </dd>
 527 </dl>
 528 <dl class="section return"><dt>Returns</dt><dd>a float8 containing 4 2D transformed values in the input image. </dd></dl>
 529
 530 <p>Definition at line <a class="el" href="scale_8cl_source.xhtml#l00034">34</a> of file <a class="el" href="scale_8cl_source.xhtml">scale.cl</a>.</p>
 531
 532 <p>Referenced by <a class="el" href="scale_8cl_source.xhtml#l00086">scale_nearest_neighbour()</a>.</p>
 533 <div class="fragment"><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;{</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    <span class="keyword">const</span> float4 in_x_coords = (float4)(coord.s0, 1 + coord.s0, 2 + coord.s0, 3 + coord.s0);</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    <span class="keyword">const</span> float4 new_x       = (in_x_coords + ((float4)(0.5f))) * (float4)(<a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#acec6d8ad52a28972fa74e071c1a63b6a">scale</a>.s0);</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    <span class="keyword">const</span> float4 new_y       = (float4)((coord.s1 + 0.5f) * <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#acec6d8ad52a28972fa74e071c1a63b6a">scale</a>.s1);</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    <span class="keywordflow">return</span> (float8)(new_x.s0, new_y.s0, new_x.s1, new_y.s1, new_x.s2, new_y.s2, new_x.s3, new_y.s3);</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;}</div><div class="ttc" id="namespacearm__compute_1_1test_1_1validation_xhtml_acec6d8ad52a28972fa74e071c1a63b6a"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation.xhtml#acec6d8ad52a28972fa74e071c1a63b6a">arm_compute::test::validation::scale</a></div><div class="ttdeci">scale</div><div class="ttdef"><b>Definition:</b> <a href="_n_e_o_n_2_pixel_wise_multiplication_8cpp_source.xhtml#l00178">PixelWiseMultiplication.cpp:178</a></div></div>
 534 </div><!-- fragment -->
 535 </div>
 536 </div>
 537 </div><!-- contents -->
 538 </div><!-- doc-content -->
 539 <!-- start footer part -->
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 541   <ul>
 542     <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="scale_8cl.xhtml">scale.cl</a></li>
 543     <li class="footer">Generated on Wed May 23 2018 11:36:39 for Compute Library by
 544     <a href="http://www.doxygen.org/index.html">
 545     <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.11 </li>
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