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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<h1>requant.c File Reference</h1><code>#include <<a class="el" href="mpcdec_8h-source.html">mpcdec/mpcdec.h</a>></code><br>
<code>#include <<a class="el" href="internal_8h-source.html">mpcdec/internal.h</a>></code><br>
<p>
<a href="requant_8c-source.html">Go to the source code of this file.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Defines</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a0"></a><!-- doxytag: member="requant.c::_" ref="a0" args="(X)" -->
#define </td><td class="memItemRight" valign="bottom"><a class="el" href="requant_8c.html#a0">_</a>(X) MAKE_MPC_SAMPLE_EX(X,14)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a1"></a><!-- doxytag: member="requant.c::SET_SCF" ref="a1" args="(N, X)" -->
#define </td><td class="memItemRight" valign="bottom"><a class="el" href="requant_8c.html#a1">SET_SCF</a>(N, X) d->SCF[N] = MAKE_MPC_SAMPLE_EX(X,d->SCF_shift[N] = (unsigned char)find_shift(X));</td></tr>
<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="requant_8c.html#a5">mpc_decoder_scale_output</a> (<a class="el" href="structmpc__decoder__t.html">mpc_decoder</a> *d, double factor)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a7"></a><!-- doxytag: member="requant.c::mpc_decoder_initialisiere_quantisierungstabellen" ref="a7" args="(mpc_decoder *d, double scale_factor)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="requant_8c.html#a7">mpc_decoder_initialisiere_quantisierungstabellen</a> (<a class="el" href="structmpc__decoder__t.html">mpc_decoder</a> *d, double scale_factor)</td></tr>
<tr><td colspan="2"><br><h2>Variables</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">const mpc_uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="requant_8c.html#a2">Res_bit</a> [18]</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">const <a class="el" href="math_8h.html#a16">MPC_SAMPLE_FORMAT</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="requant_8c.html#a3">__Cc</a> [1+18]</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">const mpc_int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="requant_8c.html#a4">__Dc</a> [1+18]</td></tr>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
Requantization function implementations. <dl compact><dt><b><a class="el" href="todo.html#_todo000002">Todo:</a></b></dt><dd>document me </dd></dl>
<p>
Definition in file <a class="el" href="requant_8c-source.html">requant.c</a>.<hr><h2>Function Documentation</h2>
<a class="anchor" name="a5"></a><!-- doxytag: member="requant.c::mpc_decoder_scale_output" ref="a5" args="(mpc_decoder *d, double factor)" --><p>
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<td class="md" nowrap valign="top">void mpc_decoder_scale_output </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="structmpc__decoder__t.html">mpc_decoder</a> * </td>
<td class="mdname" nowrap> <em>d</em>, </td>
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<td class="md" nowrap align="right"></td>
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<td class="md" nowrap>double </td>
<td class="mdname" nowrap> <em>scale_factor</em></td>
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<td class="md"></td>
<td class="md">) </td>
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Sets decoder sample scaling factor. All decoded samples will be multiplied by this factor. <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>scale_factor</em> </td><td>multiplicative scaling factor </td></tr>
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</dl>
<p>
Definition at line <a class="el" href="requant_8c-source.html#l00089">89</a> of file <a class="el" href="requant_8c-source.html">requant.c</a>.
<p>
References <a class="el" href="math_8h-source.html#l00043">MPC_FIXED_POINT_SHIFT</a>, and <a class="el" href="requant_8c-source.html#l00086">SET_SCF</a>.
<p>
Referenced by <a class="el" href="requant_8c-source.html#l00148">mpc_decoder_initialisiere_quantisierungstabellen()</a>. </td>
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<hr><h2>Variable Documentation</h2>
<a class="anchor" name="a3"></a><!-- doxytag: member="requant.c::__Cc" ref="a3" args="[1+18]" --><p>
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<td class="md" nowrap valign="top">const <a class="el" href="math_8h.html#a16">MPC_SAMPLE_FORMAT</a> <a class="el" href="requant_8c.html#a3">__Cc</a>[1+18] </td>
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<p>
<b>Initial value:</b><div class="fragment"><pre class="fragment"> {
<a class="code" href="requant_8c.html#a0">_</a>(111.285962475327f),
<a class="code" href="requant_8c.html#a0">_</a>(65536.000000000000f), <a class="code" href="requant_8c.html#a0">_</a>(21845.333333333332f), <a class="code" href="requant_8c.html#a0">_</a>(13107.200000000001f), <a class="code" href="requant_8c.html#a0">_</a>(9362.285714285713f),
<a class="code" href="requant_8c.html#a0">_</a>(7281.777777777777f), <a class="code" href="requant_8c.html#a0">_</a>(4369.066666666666f), <a class="code" href="requant_8c.html#a0">_</a>(2114.064516129032f), <a class="code" href="requant_8c.html#a0">_</a>(1040.253968253968f),
<a class="code" href="requant_8c.html#a0">_</a>(516.031496062992f), <a class="code" href="requant_8c.html#a0">_</a>(257.003921568627f), <a class="code" href="requant_8c.html#a0">_</a>(128.250489236790f), <a class="code" href="requant_8c.html#a0">_</a>(64.062561094819f),
<a class="code" href="requant_8c.html#a0">_</a>(32.015632633121f), <a class="code" href="requant_8c.html#a0">_</a>(16.003907203907f), <a class="code" href="requant_8c.html#a0">_</a>(8.000976681723f), <a class="code" href="requant_8c.html#a0">_</a>(4.000244155527f),
<a class="code" href="requant_8c.html#a0">_</a>(2.000061037018f), <a class="code" href="requant_8c.html#a0">_</a>(1.000015259021f)
}
</pre></div>
<p>
Definition at line <a class="el" href="requant_8c-source.html#l00053">53</a> of file <a class="el" href="requant_8c-source.html">requant.c</a>. </td>
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<a class="anchor" name="a4"></a><!-- doxytag: member="requant.c::__Dc" ref="a4" args="[1+18]" --><p>
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<td class="md" nowrap valign="top">const mpc_int32_t <a class="el" href="requant_8c.html#a4">__Dc</a>[1+18] </td>
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<p>
<b>Initial value:</b><div class="fragment"><pre class="fragment"> {
2,
0, 1, 2, 3, 4, 7, 15, 31, 63,
127, 255, 511, 1023, 2047, 4095, 8191, 16383, 32767
}
</pre></div>
<p>
Definition at line <a class="el" href="requant_8c-source.html#l00066">66</a> of file <a class="el" href="requant_8c-source.html">requant.c</a>. </td>
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<a class="anchor" name="a2"></a><!-- doxytag: member="requant.c::Res_bit" ref="a2" args="[18]" --><p>
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<td class="md" nowrap valign="top">const mpc_uint32_t <a class="el" href="requant_8c.html#a2">Res_bit</a>[18] </td>
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</td>
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</td>
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<p>
<b>Initial value:</b><div class="fragment"><pre class="fragment"> {
0, 0, 0, 0, 0, 0, 0, 0, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16
}
</pre></div>
<p>
Definition at line <a class="el" href="requant_8c-source.html#l00044">44</a> of file <a class="el" href="requant_8c-source.html">requant.c</a>.
<p>
Referenced by <a class="el" href="mpc__decoder_8c-source.html#l00656">mpc_decoder_read_bitstream_sv6()</a>, and <a class="el" href="mpc__decoder_8c-source.html#l00865">mpc_decoder_read_bitstream_sv7()</a>. </td>
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