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<li class="navelem"><a class="el" href="dir_3b1f69f89eda39a44baf4887988d54a7.html">libavcodec</a></li> </ul>
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<div class="title">dirac.h File Reference</div> </div>
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<p>Interface to Dirac Decoder/Encoder.
<a href="#details">More...</a></p>
<div class="textblock"><code>#include "<a class="el" href="avcodec_8h_source.html">avcodec.h</a>"</code><br/>
</div>
<p><a href="dirac_8h_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structDiracVersionInfo.html">DiracVersionInfo</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVDiracSeqHeader.html">AVDiracSeqHeader</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:a5a5d8c67c6041d3f765f183deb9919ff"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dirac_8h.html#a5a5d8c67c6041d3f765f183deb9919ff">MAX_DWT_LEVELS</a>   5</td></tr>
<tr class="memdesc:a5a5d8c67c6041d3f765f183deb9919ff"><td class="mdescLeft"> </td><td class="mdescRight">The spec limits the number of wavelet decompositions to 4 for both level 1 (VC-2) and 128 (long-gop default). <a href="#a5a5d8c67c6041d3f765f183deb9919ff">More...</a><br/></td></tr>
<tr class="separator:a5a5d8c67c6041d3f765f183deb9919ff"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="enum-members"></a>
Enumerations</h2></td></tr>
<tr class="memitem:a2359aa6142dd80d61213be6aa1e78f05"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05">DiracParseCodes</a> { <br/>
  <a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05ae2560b5b918710234ea901d7470d24b0">DIRAC_PCODE_SEQ_HEADER</a> = 0x00,
<a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05a7c8ae247b20b57e5ac2b9a801a40dec6">DIRAC_PCODE_END_SEQ</a> = 0x10,
<a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05a0b2ff004f3f63170fe5bfdc71eefa582">DIRAC_PCODE_AUX</a> = 0x20,
<a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05af60ade5fdf23817f2667197312ed38bd">DIRAC_PCODE_PAD</a> = 0x30,
<br/>
  <a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05a09a36ce2b5ad4458a5e44b44b709de88">DIRAC_PCODE_PICTURE_CODED</a> = 0x08,
<a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05aca559629be3fe64ac92defedb13b4574">DIRAC_PCODE_PICTURE_RAW</a> = 0x48,
<a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05a6ef385c961a85e5d5c1169a0bb6617f3">DIRAC_PCODE_PICTURE_LOW_DEL</a> = 0xC8,
<a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05afd722c46615d91a3652394db04c9f873">DIRAC_PCODE_PICTURE_HQ</a> = 0xE8,
<br/>
  <a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05a67b7d67ad5c6d726c1a8d3460e89394f">DIRAC_PCODE_INTER_NOREF_CO1</a> = 0x0A,
<a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05a2a59c292f34ad0bcc99f4707ccb7879b">DIRAC_PCODE_INTER_NOREF_CO2</a> = 0x09,
<a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05a5d56c0d900afdb0489efef2439b138b0">DIRAC_PCODE_INTER_REF_CO1</a> = 0x0D,
<a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05acd68cf1ef53793c64ef34df10438cdfe">DIRAC_PCODE_INTER_REF_CO2</a> = 0x0E,
<br/>
  <a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05add01726c64328c64e866596d14b7cc64">DIRAC_PCODE_INTRA_REF_CO</a> = 0x0C,
<a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05aee379d612bd512207438f55f76dc6d45">DIRAC_PCODE_INTRA_REF_RAW</a> = 0x4C,
<a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05a60646680c60ff93d88a690568a53fb16">DIRAC_PCODE_INTRA_REF_PICT</a> = 0xCC,
<a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05aaec9076aec6bf860656936f36cf71f80">DIRAC_PCODE_MAGIC</a> = 0x42424344
<br/>
}</td></tr>
<tr class="memdesc:a2359aa6142dd80d61213be6aa1e78f05"><td class="mdescLeft"> </td><td class="mdescRight">Parse code values: <a href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05">More...</a><br/></td></tr>
<tr class="separator:a2359aa6142dd80d61213be6aa1e78f05"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a0939293e7885ab2416545945d2e0afa5"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="dirac_8h.html#a0939293e7885ab2416545945d2e0afa5">av_dirac_parse_sequence_header</a> (<a class="el" href="structAVDiracSeqHeader.html">AVDiracSeqHeader</a> **dsh, const uint8_t *buf, size_t buf_size, void *log_ctx)</td></tr>
<tr class="memdesc:a0939293e7885ab2416545945d2e0afa5"><td class="mdescLeft"> </td><td class="mdescRight">Parse a Dirac sequence header. <a href="#a0939293e7885ab2416545945d2e0afa5">More...</a><br/></td></tr>
<tr class="separator:a0939293e7885ab2416545945d2e0afa5"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Interface to Dirac Decoder/Encoder. </p>
<dl class="section author"><dt>Author</dt><dd>Marco Gerards <a href="#" onclick="location.href='mai'+'lto:'+'mar'+'co'+'@gn'+'u.'+'org'; return false;">marco<span style="display: none;">.nosp@m.</span>@gnu<span style="display: none;">.nosp@m.</span>.org</a> </dd>
<dd>
David Conrad </dd>
<dd>
Jordi Ortiz </dd></dl>
<p>Definition in file <a class="el" href="dirac_8h_source.html">dirac.h</a>.</p>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
<a class="anchor" id="a5a5d8c67c6041d3f765f183deb9919ff"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">#define MAX_DWT_LEVELS   5</td>
</tr>
</table>
</div><div class="memdoc">
<p>The spec limits the number of wavelet decompositions to 4 for both level 1 (VC-2) and 128 (long-gop default). </p>
<p>5 decompositions is the maximum before >16-bit buffers are needed. Schroedinger allows this for DD 9,7 and 13,7 wavelets only, limiting the others to 4 decompositions (or 3 for the fidelity filter).</p>
<p>We use this instead of MAX_DECOMPOSITIONS to save some memory. </p>
<p>Definition at line <a class="el" href="dirac_8h_source.html#l00045">45</a> of file <a class="el" href="dirac_8h_source.html">dirac.h</a>.</p>
</div>
</div>
<h2 class="groupheader">Enumeration Type Documentation</h2>
<a class="anchor" id="a2359aa6142dd80d61213be6aa1e78f05"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">enum <a class="el" href="dirac_8h.html#a2359aa6142dd80d61213be6aa1e78f05">DiracParseCodes</a></td>
</tr>
</table>
</div><div class="memdoc">
<p>Parse code values: </p>
<p>Dirac Specification -> 9.6.1 Table 9.1</p>
<p>VC-2 Specification -> 10.4.1 Table 10.1 </p>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><em><a class="anchor" id="a2359aa6142dd80d61213be6aa1e78f05ae2560b5b918710234ea901d7470d24b0"></a>DIRAC_PCODE_SEQ_HEADER</em> </td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a2359aa6142dd80d61213be6aa1e78f05a7c8ae247b20b57e5ac2b9a801a40dec6"></a>DIRAC_PCODE_END_SEQ</em> </td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a2359aa6142dd80d61213be6aa1e78f05a0b2ff004f3f63170fe5bfdc71eefa582"></a>DIRAC_PCODE_AUX</em> </td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a2359aa6142dd80d61213be6aa1e78f05af60ade5fdf23817f2667197312ed38bd"></a>DIRAC_PCODE_PAD</em> </td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a2359aa6142dd80d61213be6aa1e78f05a09a36ce2b5ad4458a5e44b44b709de88"></a>DIRAC_PCODE_PICTURE_CODED</em> </td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a2359aa6142dd80d61213be6aa1e78f05aca559629be3fe64ac92defedb13b4574"></a>DIRAC_PCODE_PICTURE_RAW</em> </td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a2359aa6142dd80d61213be6aa1e78f05a6ef385c961a85e5d5c1169a0bb6617f3"></a>DIRAC_PCODE_PICTURE_LOW_DEL</em> </td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a2359aa6142dd80d61213be6aa1e78f05afd722c46615d91a3652394db04c9f873"></a>DIRAC_PCODE_PICTURE_HQ</em> </td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a2359aa6142dd80d61213be6aa1e78f05a67b7d67ad5c6d726c1a8d3460e89394f"></a>DIRAC_PCODE_INTER_NOREF_CO1</em> </td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a2359aa6142dd80d61213be6aa1e78f05a2a59c292f34ad0bcc99f4707ccb7879b"></a>DIRAC_PCODE_INTER_NOREF_CO2</em> </td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a2359aa6142dd80d61213be6aa1e78f05a5d56c0d900afdb0489efef2439b138b0"></a>DIRAC_PCODE_INTER_REF_CO1</em> </td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a2359aa6142dd80d61213be6aa1e78f05acd68cf1ef53793c64ef34df10438cdfe"></a>DIRAC_PCODE_INTER_REF_CO2</em> </td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a2359aa6142dd80d61213be6aa1e78f05add01726c64328c64e866596d14b7cc64"></a>DIRAC_PCODE_INTRA_REF_CO</em> </td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a2359aa6142dd80d61213be6aa1e78f05aee379d612bd512207438f55f76dc6d45"></a>DIRAC_PCODE_INTRA_REF_RAW</em> </td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a2359aa6142dd80d61213be6aa1e78f05a60646680c60ff93d88a690568a53fb16"></a>DIRAC_PCODE_INTRA_REF_PICT</em> </td><td class="fielddoc">
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a2359aa6142dd80d61213be6aa1e78f05aaec9076aec6bf860656936f36cf71f80"></a>DIRAC_PCODE_MAGIC</em> </td><td class="fielddoc">
</td></tr>
</table>
<p>Definition at line <a class="el" href="dirac_8h_source.html#l00057">57</a> of file <a class="el" href="dirac_8h_source.html">dirac.h</a>.</p>
</div>
</div>
<h2 class="groupheader">Function Documentation</h2>
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<td class="memname">int av_dirac_parse_sequence_header </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structAVDiracSeqHeader.html">AVDiracSeqHeader</a> ** </td>
<td class="paramname"><em>dsh</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const uint8_t * </td>
<td class="paramname"><em>buf</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>buf_size</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"><em>log_ctx</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
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</div><div class="memdoc">
<p>Parse a Dirac sequence header. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">dsh</td><td>this function will allocate and fill an <a class="el" href="structAVDiracSeqHeader.html">AVDiracSeqHeader</a> struct and write it into this pointer. The caller must free it with <a class="el" href="group__lavu__mem.html#ga0c9096f498624c525aa2315b8a20c411" title="Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...">av_free()</a>. </td></tr>
<tr><td class="paramname">buf</td><td>the data buffer </td></tr>
<tr><td class="paramname">buf_size</td><td>the size of the data buffer in bytes </td></tr>
<tr><td class="paramname">log_ctx</td><td>if non-NULL, this function will log errors here </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 on success, a negative AVERROR code on failure </dd></dl>
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