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showbox-public-14
showbox-public-14 / ffmpeg-doc deb
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<a href="#typedef-members">Typedefs</a> |
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<div class="title">pixelutils.h File Reference</div> </div>
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<div class="textblock"><code>#include <stddef.h></code><br/>
<code>#include <stdint.h></code><br/>
<code>#include "<a class="el" href="common_8h_source.html">common.h</a>"</code><br/>
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<p><a href="pixelutils_8h_source.html">Go to the source code of this file.</a></p>
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Typedefs</h2></td></tr>
<tr class="memitem:a54501127dd40702a0edc29c28c4dc7bf"><td class="memItemLeft" align="right" valign="top">typedef int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="pixelutils_8h.html#a54501127dd40702a0edc29c28c4dc7bf">av_pixelutils_sad_fn</a> )(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)</td></tr>
<tr class="memdesc:a54501127dd40702a0edc29c28c4dc7bf"><td class="mdescLeft"> </td><td class="mdescRight">Sum of abs(src1[x] - src2[x]) <a href="#a54501127dd40702a0edc29c28c4dc7bf">More...</a><br/></td></tr>
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Functions</h2></td></tr>
<tr class="memitem:ace06a5d0938728661c6416babe1ee0a9"><td class="memItemLeft" align="right" valign="top"><a class="el" href="pixelutils_8h.html#a54501127dd40702a0edc29c28c4dc7bf">av_pixelutils_sad_fn</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="pixelutils_8h.html#ace06a5d0938728661c6416babe1ee0a9">av_pixelutils_get_sad_fn</a> (int w_bits, int h_bits, int aligned, void *log_ctx)</td></tr>
<tr class="memdesc:ace06a5d0938728661c6416babe1ee0a9"><td class="mdescLeft"> </td><td class="mdescRight">Get a potentially optimized pointer to a Sum-of-absolute-differences function (see the av_pixelutils_sad_fn prototype). <a href="#ace06a5d0938728661c6416babe1ee0a9">More...</a><br/></td></tr>
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<h2 class="groupheader">Typedef Documentation</h2>
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<td class="memname">typedef int(* av_pixelutils_sad_fn)(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)</td>
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<p>Sum of abs(src1[x] - src2[x]) </p>
<p>Definition at line <a class="el" href="pixelutils_8h_source.html#l00029">29</a> of file <a class="el" href="pixelutils_8h_source.html">pixelutils.h</a>.</p>
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<h2 class="groupheader">Function Documentation</h2>
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<td class="memname"><a class="el" href="pixelutils_8h.html#a54501127dd40702a0edc29c28c4dc7bf">av_pixelutils_sad_fn</a> av_pixelutils_get_sad_fn </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>w_bits</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>h_bits</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>aligned</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"><em>log_ctx</em> </td>
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<td>)</td>
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<p>Get a potentially optimized pointer to a Sum-of-absolute-differences function (see the av_pixelutils_sad_fn prototype). </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">w_bits</td><td>1<<w_bits is the requested width of the block size </td></tr>
<tr><td class="paramname">h_bits</td><td>1<<h_bits is the requested height of the block size </td></tr>
<tr><td class="paramname">aligned</td><td>If set to 2, the returned sad function will assume src1 and src2 addresses are aligned on the block size. If set to 1, the returned sad function will assume src1 is aligned on the block size. If set to 0, the returned sad function assume no particular alignment. </td></tr>
<tr><td class="paramname">log_ctx</td><td>context used for logging, can be NULL</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>a pointer to the SAD function or NULL in case of error (because of invalid parameters) </dd></dl>
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