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<li class="navelem"><a class="el" href="dir_8d855866ba5d436d839c7fc557836cd9.html">libavutil</a></li> </ul>
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<a href="pixelutils_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * This file is part of FFmpeg.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * FFmpeg is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * modify it under the terms of the GNU Lesser General Public</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * License as published by the Free Software Foundation; either</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * version 2.1 of the License, or (at your option) any later version.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * FFmpeg is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * Lesser General Public License for more details.</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * You should have received a copy of the GNU Lesser General Public</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * License along with FFmpeg; if not, write to the Free Software</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#ifndef AVUTIL_PIXELUTILS_H</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor"></span><span class="preprocessor">#define AVUTIL_PIXELUTILS_H</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <stddef.h></span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <stdint.h></span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "<a class="code" href="common_8h.html">common.h</a>"</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"></span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * Sum of abs(src1[x] - src2[x])</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="pixelutils_8h.html#a54501127dd40702a0edc29c28c4dc7bf"> 29</a></span> <span class="keyword">typedef</span> int (*<a class="code" href="pixelutils_8h.html#a54501127dd40702a0edc29c28c4dc7bf">av_pixelutils_sad_fn</a>)(<span class="keyword">const</span> uint8_t *src1, ptrdiff_t stride1,</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keyword">const</span> uint8_t *src2, ptrdiff_t stride2);</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"></span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> * Get a potentially optimized pointer to a Sum-of-absolute-differences</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> * function (see the av_pixelutils_sad_fn prototype).</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> * @param w_bits 1<<w_bits is the requested width of the block size</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> * @param h_bits 1<<h_bits is the requested height of the block size</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> * @param aligned If set to 2, the returned sad function will assume src1 and</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> * src2 addresses are aligned on the block size.</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * If set to 1, the returned sad function will assume src1 is</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> * aligned on the block size.</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> * If set to 0, the returned sad function assume no particular</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * alignment.</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> * @param log_ctx context used for logging, can be NULL</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> * @return a pointer to the SAD function or NULL in case of error (because of</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> * invalid parameters)</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <a class="code" href="pixelutils_8h.html#a54501127dd40702a0edc29c28c4dc7bf">av_pixelutils_sad_fn</a> <a class="code" href="pixelutils_8h.html#ace06a5d0938728661c6416babe1ee0a9">av_pixelutils_get_sad_fn</a>(<span class="keywordtype">int</span> w_bits, <span class="keywordtype">int</span> h_bits,</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordtype">int</span> aligned, <span class="keywordtype">void</span> *log_ctx);</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor">#endif </span><span class="comment">/* AVUTIL_PIXELUTILS_H */</span><span class="preprocessor"></span></div>
<div class="ttc" id="pixelutils_8h_html_ace06a5d0938728661c6416babe1ee0a9"><div class="ttname"><a href="pixelutils_8h.html#ace06a5d0938728661c6416babe1ee0a9">av_pixelutils_get_sad_fn</a></div><div class="ttdeci">av_pixelutils_sad_fn av_pixelutils_get_sad_fn(int w_bits, int h_bits, int aligned, void *log_ctx)</div><div class="ttdoc">Get a potentially optimized pointer to a Sum-of-absolute-differences function (see the av_pixelutils_...</div></div>
<div class="ttc" id="pixelutils_8h_html_a54501127dd40702a0edc29c28c4dc7bf"><div class="ttname"><a href="pixelutils_8h.html#a54501127dd40702a0edc29c28c4dc7bf">av_pixelutils_sad_fn</a></div><div class="ttdeci">int(* av_pixelutils_sad_fn)(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)</div><div class="ttdoc">Sum of abs(src1[x] - src2[x]) </div><div class="ttdef"><b>Definition:</b> <a href="pixelutils_8h_source.html#l00029">pixelutils.h:29</a></div></div>
<div class="ttc" id="common_8h_html"><div class="ttname"><a href="common_8h.html">common.h</a></div><div class="ttdoc">common internal and external API header </div></div>
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