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Dirac - A Video Codec
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Created by the <a href="http://www.bbc.co.uk">British Broadcasting Corporation</a>.
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<a class="el" href="a00226.html">dirac</a>::<a class="el" href="a00142.html">WaveletTransform</a>::<a class="el" href="a00149.html">VHFilter</a></div>
<h1>dirac::WaveletTransform::VHFilter Class Reference</h1><!-- doxytag: class="dirac::WaveletTransform::VHFilter" -->A virtual parent class to do vertical and horizontal splitting with wavelet filters.
<a href="#_details"></a>
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<div class="dynheader">
Inheritance diagram for dirac::WaveletTransform::VHFilter:</div>
<div class="dynsection">
<p><center><img src="a00149.png" usemap="#dirac::WaveletTransform::VHFilter_map" border="0" alt=""></center>
<map name="dirac::WaveletTransform::VHFilter_map">
<area href="a00150.html" alt="dirac::WaveletTransform::VHFilterDAUB9_7" shape="rect" coords="0,56,270,80">
<area href="a00151.html" alt="dirac::WaveletTransform::VHFilterDD13_7" shape="rect" coords="280,56,550,80">
<area href="a00152.html" alt="dirac::WaveletTransform::VHFilterDD9_7" shape="rect" coords="560,56,830,80">
<area href="a00153.html" alt="dirac::WaveletTransform::VHFilterHAAR0" shape="rect" coords="840,56,1110,80">
<area href="a00154.html" alt="dirac::WaveletTransform::VHFilterHAAR1" shape="rect" coords="1120,56,1390,80">
<area href="a00155.html" alt="dirac::WaveletTransform::VHFilterHAAR2" shape="rect" coords="1400,56,1670,80">
<area href="a00156.html" alt="dirac::WaveletTransform::VHFilterLEGALL5_3" shape="rect" coords="1680,56,1950,80">
</map>
</div>
<p>
<a href="a00402.html">List of all members.</a><h2>Public Member Functions</h2>
<ul>
<li><a class="el" href="a00149.html#51f54a965dfafa6b1c0a06a52fc2f993">VHFilter</a> ()
<li>virtual <a class="el" href="a00149.html#73907825624b4bb5adf0dee544759f3d">~VHFilter</a> ()
<li>virtual void <a class="el" href="a00149.html#94034dc756c8bc8735a278022b2553aa">Split</a> (const int xp, const int yp, const int xl, const int yl, <a class="el" href="a00023.html">CoeffArray</a> &coeff_data)=0
<dl class="el"><dd class="mdescRight">Split a subband into 4. <a href="#94034dc756c8bc8735a278022b2553aa"></a><br></dl><li>virtual void <a class="el" href="a00149.html#f9ad18f60ef3dd281ddc51f70f9f4fc5">Synth</a> (const int xp, const int yp, const int xl, const int yl, <a class="el" href="a00023.html">CoeffArray</a> &coeff_data)=0
<dl class="el"><dd class="mdescRight">Create a single band from 4 quadrant bands. <a href="#f9ad18f60ef3dd281ddc51f70f9f4fc5"></a><br></dl><li>virtual double <a class="el" href="a00149.html#0e4a60f03204bd572cf25dd48fbedfd5">GetLowFactor</a> () const =0
<dl class="el"><dd class="mdescRight">Return a correction factor to compensate for non-unity gain of low-pass filter. <a href="#0e4a60f03204bd572cf25dd48fbedfd5"></a><br></dl><li>virtual double <a class="el" href="a00149.html#f5b4fc1f66e1583d61f33ba2626135fb">GetHighFactor</a> () const =0
<dl class="el"><dd class="mdescRight">Return a correction factor to compensate for non-unity gain of high-pass filter. <a href="#f5b4fc1f66e1583d61f33ba2626135fb"></a><br></dl><li>virtual int <a class="el" href="a00149.html#e8072d9db721d9b7f7e12ad04f43a048">GetShift</a> () const =0
<dl class="el"><dd class="mdescRight">Return the value of the additional bitshift. <a href="#e8072d9db721d9b7f7e12ad04f43a048"></a><br></dl></ul>
<h2>Protected Member Functions</h2>
<ul>
<li>void <a class="el" href="a00149.html#74928349d5db072b9c75629473de622e">Interleave</a> (const int xp, const int yp, const int xl, const int yl, <a class="el" href="a00023.html">CoeffArray</a> &coeff_data)
<dl class="el"><dd class="mdescRight">Interleave data from separate subbands into even and odd positions for in-place calculation - called by Synth. <a href="#74928349d5db072b9c75629473de622e"></a><br></dl><li>void <a class="el" href="a00149.html#211545860d1a4bfce7ddf859810e4849">DeInterleave</a> (const int xp, const int yp, const int xl, const int yl, <a class="el" href="a00023.html">CoeffArray</a> &coeff_data)
<dl class="el"><dd class="mdescRight">De-interleave data even and odd positions into separate subbands - called by Split. <a href="#211545860d1a4bfce7ddf859810e4849"></a><br></dl><li>void <a class="el" href="a00149.html#bfa03abfc051bed380da56be4a26e8fc">ShiftRowLeft</a> (<a class="el" href="a00226.html#00c36803f51328ff862631abde5071c5">CoeffType</a> *row, int length, int shift)
<dl class="el"><dd class="mdescRight">Shift all vals in Row by 'shift' bits to the left to increase accuracy by 'shift' bits. Used in Analysis stage of filter. <a href="#bfa03abfc051bed380da56be4a26e8fc"></a><br></dl><li>void <a class="el" href="a00149.html#be69da884a0a9ed2ef56f0beb16135c3">ShiftRowRight</a> (<a class="el" href="a00226.html#00c36803f51328ff862631abde5071c5">CoeffType</a> *row, int length, int shift)
<dl class="el"><dd class="mdescRight">Shift all vals in Row by 'shift' bits to the right to counter the shift in the Analysis stage. This function is used in the Synthesis stage. <a href="#be69da884a0a9ed2ef56f0beb16135c3"></a><br></dl></ul>
<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="51f54a965dfafa6b1c0a06a52fc2f993"></a><!-- doxytag: member="dirac::WaveletTransform::VHFilter::VHFilter" ref="51f54a965dfafa6b1c0a06a52fc2f993" args="()" -->
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<td class="memname">dirac::WaveletTransform::VHFilter::VHFilter </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td width="100%"><code> [inline]</code></td>
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<a class="anchor" name="73907825624b4bb5adf0dee544759f3d"></a><!-- doxytag: member="dirac::WaveletTransform::VHFilter::~VHFilter" ref="73907825624b4bb5adf0dee544759f3d" args="()" -->
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<td class="memname">virtual dirac::WaveletTransform::VHFilter::~VHFilter </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td width="100%"><code> [inline, virtual]</code></td>
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="94034dc756c8bc8735a278022b2553aa"></a><!-- doxytag: member="dirac::WaveletTransform::VHFilter::Split" ref="94034dc756c8bc8735a278022b2553aa" args="(const int xp, const int yp, const int xl, const int yl, CoeffArray &coeff_data)=0" -->
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<td class="memname">virtual void dirac::WaveletTransform::VHFilter::Split </td>
<td>(</td>
<td class="paramtype">const int </td>
<td class="paramname"> <em>xp</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">const int </td>
<td class="paramname"> <em>yp</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const int </td>
<td class="paramname"> <em>xl</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const int </td>
<td class="paramname"> <em>yl</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="a00023.html">CoeffArray</a> & </td>
<td class="paramname"> <em>coeff_data</em></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td width="100%"><code> [pure virtual]</code></td>
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<p>Implemented in <a class="el" href="a00150.html#4c625985c28ae06db8f9428dbe02034d">dirac::WaveletTransform::VHFilterDAUB9_7</a>, <a class="el" href="a00156.html#362040ad9d26140a8a96af7477ffc219">dirac::WaveletTransform::VHFilterLEGALL5_3</a>, <a class="el" href="a00152.html#ae3b8ccf60e158a74fbfbc7867c76869">dirac::WaveletTransform::VHFilterDD9_7</a>, <a class="el" href="a00151.html#0cf785c2ee990b93e54f6cfcb290e64a">dirac::WaveletTransform::VHFilterDD13_7</a>, <a class="el" href="a00153.html#15c4408408a0f564b451ae32478adf16">dirac::WaveletTransform::VHFilterHAAR0</a>, <a class="el" href="a00154.html#3e824e135e31171008b2d525c886eb43">dirac::WaveletTransform::VHFilterHAAR1</a>, and <a class="el" href="a00155.html#fbf24a63b65d4e76eb1f8c483ff9ca3a">dirac::WaveletTransform::VHFilterHAAR2</a>.</p>
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<a class="anchor" name="f9ad18f60ef3dd281ddc51f70f9f4fc5"></a><!-- doxytag: member="dirac::WaveletTransform::VHFilter::Synth" ref="f9ad18f60ef3dd281ddc51f70f9f4fc5" args="(const int xp, const int yp, const int xl, const int yl, CoeffArray &coeff_data)=0" -->
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<td class="memname">virtual void dirac::WaveletTransform::VHFilter::Synth </td>
<td>(</td>
<td class="paramtype">const int </td>
<td class="paramname"> <em>xp</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const int </td>
<td class="paramname"> <em>yp</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const int </td>
<td class="paramname"> <em>xl</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const int </td>
<td class="paramname"> <em>yl</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="a00023.html">CoeffArray</a> & </td>
<td class="paramname"> <em>coeff_data</em></td><td> </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td></td><td width="100%"><code> [pure virtual]</code></td>
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<p>Implemented in <a class="el" href="a00150.html#a57040d8ad411c3355209627649abc58">dirac::WaveletTransform::VHFilterDAUB9_7</a>, <a class="el" href="a00156.html#ecda153c02b6f2097f9f7f027496335e">dirac::WaveletTransform::VHFilterLEGALL5_3</a>, <a class="el" href="a00152.html#f829ff82d301666f5d43e9b99a911cfd">dirac::WaveletTransform::VHFilterDD9_7</a>, <a class="el" href="a00151.html#0b68ed764e0f524cac43563ce7f37650">dirac::WaveletTransform::VHFilterDD13_7</a>, <a class="el" href="a00153.html#399a8a662b992933eab7cc270e5a566b">dirac::WaveletTransform::VHFilterHAAR0</a>, <a class="el" href="a00154.html#9b5f092ac02173789a2ad5fcaed49fb6">dirac::WaveletTransform::VHFilterHAAR1</a>, and <a class="el" href="a00155.html#875c9157d1eb5bf9701b7be9c0e9c325">dirac::WaveletTransform::VHFilterHAAR2</a>.</p>
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<a class="anchor" name="0e4a60f03204bd572cf25dd48fbedfd5"></a><!-- doxytag: member="dirac::WaveletTransform::VHFilter::GetLowFactor" ref="0e4a60f03204bd572cf25dd48fbedfd5" args="() const =0" -->
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<td class="memname">virtual double dirac::WaveletTransform::VHFilter::GetLowFactor </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td width="100%"> const<code> [pure virtual]</code></td>
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<p>Implemented in <a class="el" href="a00150.html#b40abe51a5c91afa113a05a2d77e24df">dirac::WaveletTransform::VHFilterDAUB9_7</a>, <a class="el" href="a00156.html#2587f9bc653b2356848057b75bb8bd61">dirac::WaveletTransform::VHFilterLEGALL5_3</a>, <a class="el" href="a00152.html#bb7c987fd5ec6f84e2e5a89d8ec17730">dirac::WaveletTransform::VHFilterDD9_7</a>, <a class="el" href="a00151.html#cf50a85e0bb1ff7855ebd8a61e84f7b6">dirac::WaveletTransform::VHFilterDD13_7</a>, <a class="el" href="a00153.html#ff21ee200b109b7e7ba36d1baf7079cc">dirac::WaveletTransform::VHFilterHAAR0</a>, <a class="el" href="a00154.html#ff06f6fc3bb520c8e9b9935aa3a54c56">dirac::WaveletTransform::VHFilterHAAR1</a>, and <a class="el" href="a00155.html#bc358cfc34b33fa3ecb280f5f4c23e52">dirac::WaveletTransform::VHFilterHAAR2</a>.</p>
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<a class="anchor" name="f5b4fc1f66e1583d61f33ba2626135fb"></a><!-- doxytag: member="dirac::WaveletTransform::VHFilter::GetHighFactor" ref="f5b4fc1f66e1583d61f33ba2626135fb" args="() const =0" -->
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<td class="memname">virtual double dirac::WaveletTransform::VHFilter::GetHighFactor </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td width="100%"> const<code> [pure virtual]</code></td>
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<p>Implemented in <a class="el" href="a00150.html#2338f5380d9dcf5aac079a63ac6c2fc7">dirac::WaveletTransform::VHFilterDAUB9_7</a>, <a class="el" href="a00156.html#d0894bad11c4f8359fe7d875b9e8e8f5">dirac::WaveletTransform::VHFilterLEGALL5_3</a>, <a class="el" href="a00152.html#095e7b90e39382aab629a11cca28c32c">dirac::WaveletTransform::VHFilterDD9_7</a>, <a class="el" href="a00151.html#d6ef8ead4497e32ec4b565d34865f9d5">dirac::WaveletTransform::VHFilterDD13_7</a>, <a class="el" href="a00153.html#f92e87e01b584ed7147e318fed1adaf7">dirac::WaveletTransform::VHFilterHAAR0</a>, <a class="el" href="a00154.html#2a9099b641a29ad00a83b218b3d9ec0f">dirac::WaveletTransform::VHFilterHAAR1</a>, and <a class="el" href="a00155.html#9e190e69389226a58c82cf314a7c3bba">dirac::WaveletTransform::VHFilterHAAR2</a>.</p>
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<a class="anchor" name="e8072d9db721d9b7f7e12ad04f43a048"></a><!-- doxytag: member="dirac::WaveletTransform::VHFilter::GetShift" ref="e8072d9db721d9b7f7e12ad04f43a048" args="() const =0" -->
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<td class="memname">virtual int dirac::WaveletTransform::VHFilter::GetShift </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td width="100%"> const<code> [pure virtual]</code></td>
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<p>Implemented in <a class="el" href="a00150.html#ba9ad7d7266a1fafabf04f8f4e65839b">dirac::WaveletTransform::VHFilterDAUB9_7</a>, <a class="el" href="a00156.html#9978ea0234995175172a97ae476bced0">dirac::WaveletTransform::VHFilterLEGALL5_3</a>, <a class="el" href="a00152.html#6350731803cb5a12b2d53d54d117deb0">dirac::WaveletTransform::VHFilterDD9_7</a>, <a class="el" href="a00151.html#f2fa27919aa6f5bf3e2e5038cc071778">dirac::WaveletTransform::VHFilterDD13_7</a>, <a class="el" href="a00153.html#078354c8d1c2596e0dd6055471bfb0b6">dirac::WaveletTransform::VHFilterHAAR0</a>, <a class="el" href="a00154.html#495aad75d2cb43378ffe6cc1e297e7b6">dirac::WaveletTransform::VHFilterHAAR1</a>, and <a class="el" href="a00155.html#e8fbd377f7f5e395c6226ff1685e2621">dirac::WaveletTransform::VHFilterHAAR2</a>.</p>
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<a class="anchor" name="74928349d5db072b9c75629473de622e"></a><!-- doxytag: member="dirac::WaveletTransform::VHFilter::Interleave" ref="74928349d5db072b9c75629473de622e" args="(const int xp, const int yp, const int xl, const int yl, CoeffArray &coeff_data)" -->
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<td class="memname">void dirac::WaveletTransform::VHFilter::Interleave </td>
<td>(</td>
<td class="paramtype">const int </td>
<td class="paramname"> <em>xp</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">const int </td>
<td class="paramname"> <em>yp</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const int </td>
<td class="paramname"> <em>xl</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const int </td>
<td class="paramname"> <em>yl</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="a00023.html">CoeffArray</a> & </td>
<td class="paramname"> <em>coeff_data</em></td><td> </td>
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<td>)</td>
<td></td><td></td><td width="100%"><code> [inline, protected]</code></td>
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<a class="anchor" name="211545860d1a4bfce7ddf859810e4849"></a><!-- doxytag: member="dirac::WaveletTransform::VHFilter::DeInterleave" ref="211545860d1a4bfce7ddf859810e4849" args="(const int xp, const int yp, const int xl, const int yl, CoeffArray &coeff_data)" -->
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<td class="memname">void dirac::WaveletTransform::VHFilter::DeInterleave </td>
<td>(</td>
<td class="paramtype">const int </td>
<td class="paramname"> <em>xp</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">const int </td>
<td class="paramname"> <em>yp</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const int </td>
<td class="paramname"> <em>xl</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const int </td>
<td class="paramname"> <em>yl</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="a00023.html">CoeffArray</a> & </td>
<td class="paramname"> <em>coeff_data</em></td><td> </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td></td><td width="100%"><code> [inline, protected]</code></td>
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<a class="anchor" name="bfa03abfc051bed380da56be4a26e8fc"></a><!-- doxytag: member="dirac::WaveletTransform::VHFilter::ShiftRowLeft" ref="bfa03abfc051bed380da56be4a26e8fc" args="(CoeffType *row, int length, int shift)" -->
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<td class="memname">void dirac::WaveletTransform::VHFilter::ShiftRowLeft </td>
<td>(</td>
<td class="paramtype"><a class="el" href="a00226.html#00c36803f51328ff862631abde5071c5">CoeffType</a> * </td>
<td class="paramname"> <em>row</em>, </td>
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<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>length</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>shift</em></td><td> </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td></td><td width="100%"><code> [protected]</code></td>
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<a class="anchor" name="be69da884a0a9ed2ef56f0beb16135c3"></a><!-- doxytag: member="dirac::WaveletTransform::VHFilter::ShiftRowRight" ref="be69da884a0a9ed2ef56f0beb16135c3" args="(CoeffType *row, int length, int shift)" -->
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<td class="memname">void dirac::WaveletTransform::VHFilter::ShiftRowRight </td>
<td>(</td>
<td class="paramtype"><a class="el" href="a00226.html#00c36803f51328ff862631abde5071c5">CoeffType</a> * </td>
<td class="paramname"> <em>row</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>length</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>shift</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td width="100%"><code> [protected]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
</div>
</div><p>
<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="a00298.html">wavelet_utils.h</a></ul>
<hr>
<p align="center"><small>
© 2004 British Broadcasting Corporation.
Dirac code licensed under the <a href="http://www.mozilla.org/MPL/">Mozilla Public License (MPL) Version 1.1</a>.<br>
HTML documentation generated by Dimitri van Heesch's
excellent <a href="http://www.doxygen.org">Doxygen</a> tool.
</small></p>
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