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<h1>Sequencer event <-> MIDI byte stream coder<br/>
<small>
[<a class="el" href="group___sequencer.html">MIDI Sequencer</a>]</small>
</h1><table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Typedefs</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef struct snd_midi_event </td><td class="memItemRight" valign="bottom"><a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a></td></tr>
<tr><td colspan="2"><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___m_i_d_i___event.html#gaa3c1797128d84a182197f5dd853c53ec">snd_midi_event_new</a> (size_t bufsize, <a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> **rdev)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a MIDI event parser. <a href="#gaa3c1797128d84a182197f5dd853c53ec"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___m_i_d_i___event.html#ga22cffc488269968de6cae6796f92ee12">snd_midi_event_resize_buffer</a> (<a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> *dev, size_t bufsize)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Resizes the MIDI message encoding buffer. <a href="#ga22cffc488269968de6cae6796f92ee12"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___m_i_d_i___event.html#ga84b9fdddfc1996d0abf759773593931f">snd_midi_event_free</a> (<a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> *dev)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Frees a MIDI event parser. <a href="#ga84b9fdddfc1996d0abf759773593931f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___m_i_d_i___event.html#ga670f51a0ce1402b7d03c2a3f5b2801ed">snd_midi_event_init</a> (<a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> *dev)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Resets MIDI encode/decode parsers. <a href="#ga670f51a0ce1402b7d03c2a3f5b2801ed"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___m_i_d_i___event.html#ga54a3d6f03dc0f83ae32d7b12b1da7e63">snd_midi_event_reset_encode</a> (<a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> *dev)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Resets MIDI encode parser. <a href="#ga54a3d6f03dc0f83ae32d7b12b1da7e63"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___m_i_d_i___event.html#ga1d6bd40b70cdd77e500b25e6eec19484">snd_midi_event_reset_decode</a> (<a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> *dev)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Resets MIDI decode parser. <a href="#ga1d6bd40b70cdd77e500b25e6eec19484"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___m_i_d_i___event.html#ga4c32d90809d0c2d44fb41be0276100df">snd_midi_event_no_status</a> (<a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> *dev, int on)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Enables/disables MIDI command merging. <a href="#ga4c32d90809d0c2d44fb41be0276100df"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">long </td><td class="memItemRight" valign="bottom"><a class="el" href="group___m_i_d_i___event.html#gae44531e8091bdd6e97a5b70e7b81ea10">snd_midi_event_encode</a> (<a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> *dev, const unsigned char *buf, long count, <a class="el" href="structsnd__seq__event__t.html">snd_seq_event_t</a> *ev)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Encodes bytes to sequencer event. <a href="#gae44531e8091bdd6e97a5b70e7b81ea10"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___m_i_d_i___event.html#gab758a60cfa82dfa28e08ba2e2cbe2149">snd_midi_event_encode_byte</a> (<a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> *dev, int c, <a class="el" href="structsnd__seq__event__t.html">snd_seq_event_t</a> *ev)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Encodes byte to sequencer event. <a href="#gab758a60cfa82dfa28e08ba2e2cbe2149"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">long </td><td class="memItemRight" valign="bottom"><a class="el" href="group___m_i_d_i___event.html#ga9ef018a85ec7f61d45d8b17083bf8cc3">snd_midi_event_decode</a> (<a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> *dev, unsigned char *buf, long count, const <a class="el" href="structsnd__seq__event__t.html">snd_seq_event_t</a> *ev)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Decodes sequencer event to MIDI byte stream. <a href="#ga9ef018a85ec7f61d45d8b17083bf8cc3"></a><br/></td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>Sequencer event <-> MIDI byte stream coder </p>
<hr/><h2>Typedef Documentation</h2>
<a class="anchor" id="gaf4d255a5c5228aa8d46a9c3e368a0e4b"></a><!-- doxytag: member="seq_midi_event.h::snd_midi_event_t" ref="gaf4d255a5c5228aa8d46a9c3e368a0e4b" args="" -->
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<td class="memname">typedef struct snd_midi_event <a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a></td>
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<div class="memdoc">
<p>container for sequencer midi event parsers </p>
</div>
</div>
<hr/><h2>Function Documentation</h2>
<a class="anchor" id="ga9ef018a85ec7f61d45d8b17083bf8cc3"></a><!-- doxytag: member="seq_midi_event.h::snd_midi_event_decode" ref="ga9ef018a85ec7f61d45d8b17083bf8cc3" args="(snd_midi_event_t *dev, unsigned char *buf, long count, const snd_seq_event_t *ev)" -->
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<td class="memname">long snd_midi_event_decode </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> * </td>
<td class="paramname"> <em>dev</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"> <em>buf</em>, </td>
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<td></td>
<td class="paramtype">long </td>
<td class="paramname"> <em>count</em>, </td>
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<td></td>
<td class="paramtype">const <a class="el" href="structsnd__seq__event__t.html">snd_seq_event_t</a> * </td>
<td class="paramname"> <em>ev</em></td><td> </td>
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<p>Decodes sequencer event to MIDI byte stream. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><tt>[in]</tt> </td><td valign="top"><em>dev</em> </td><td>MIDI event parser. </td></tr>
<tr><td valign="top"><tt>[out]</tt> </td><td valign="top"><em>buf</em> </td><td>Buffer for the resulting MIDI byte stream. </td></tr>
<tr><td valign="top"><tt>[in]</tt> </td><td valign="top"><em>count</em> </td><td>Number of bytes in <em>buf</em>. </td></tr>
<tr><td valign="top"><tt>[in]</tt> </td><td valign="top"><em>ev</em> </td><td>The sequencer event to decode. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>The number of bytes written to <em>buf</em>, or a negative error code.</dd></dl>
<p>This function tries to decode the sequencer event into one or more MIDI messages, and writes the raw MIDI byte(s) into <em>buf</em>.</p>
<p>The generated MIDI messages may use running status, unless disabled with <a class="el" href="group___m_i_d_i___event.html#ga4c32d90809d0c2d44fb41be0276100df" title="Enables/disables MIDI command merging.">snd_midi_event_no_status</a>.</p>
<p>The required buffer size for a sequencer event it as most 12 bytes, except for System Exclusive events (<em>ev->type</em> == <a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a053842a32bef6aac4c8b21b2fc80fc74">SND_SEQ_EVENT_SYSEX</a>) which can have any length (as specified by <em>ev->data.ext.len</em>).</p>
<p>The following sequencer events correspond to MIDI messages:</p>
<ul>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40aa7359bc2f050a79c5021cfa90d0705f8">SND_SEQ_EVENT_NOTEOFF</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40af35df63c334c5388ff349550e31460c2">SND_SEQ_EVENT_NOTEON</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a6d7adef3e4f2ed96cd7e2def9d541510">SND_SEQ_EVENT_KEYPRESS</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a926c84318eb653c739e1d21fa20a0d95">SND_SEQ_EVENT_CONTROLLER</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40ae8264fb5f3870a1e5f6c2724b916cefd">SND_SEQ_EVENT_PGMCHANGE</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a7eb97df129127eb771e9800da217f1fe">SND_SEQ_EVENT_CHANPRESS</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40ab1bb9ffa38e5247f993f9368a144336b">SND_SEQ_EVENT_PITCHBEND</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a053842a32bef6aac4c8b21b2fc80fc74">SND_SEQ_EVENT_SYSEX</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40ad2bcd713ea5fc228791eb95545cdf23f">SND_SEQ_EVENT_QFRAME</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a04f1e8a2a2201a7fbddf628b127dab39">SND_SEQ_EVENT_SONGPOS</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40afc621686c4f2ac288e24ff8d0aa448bd">SND_SEQ_EVENT_SONGSEL</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a60918a2617fd3435decbf96029994ac1">SND_SEQ_EVENT_TUNE_REQUEST</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a54f38f955c675d0e9624f67befe513b9">SND_SEQ_EVENT_CLOCK</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40aeca878e55b4482dc3d83bbc1c1411f0a">SND_SEQ_EVENT_START</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a85633da32af8af5efa596a7f68cff5c7">SND_SEQ_EVENT_CONTINUE</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a8bda57193eede5c6d45a34a135c8d95d">SND_SEQ_EVENT_STOP</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40af0cd5b4a2aa37ee9b34c6ecdde1b32b2">SND_SEQ_EVENT_SENSING</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40aefe6bb7adade51add7905856d70efc65">SND_SEQ_EVENT_RESET</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a931edc93b65db5e11be1670166a6623b">SND_SEQ_EVENT_CONTROL14</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a83eb21e2fe5bf509d0d9c4a911f0cd36">SND_SEQ_EVENT_NONREGPARAM</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40ae85ad451b5012c5d4f37bec4cb39516c">SND_SEQ_EVENT_REGPARAM</a></li>
</ul>
<dl class="user"><dt><b>Errors:</b></dt><dd><dl>
<dt>-EINVAL</dt>
<dd><em>ev</em> is not a valid sequencer event. </dd>
<dt>-ENOENT</dt>
<dd>The sequencer event does not correspond to one or more MIDI messages. </dd>
<dt>-ENOMEM</dt>
<dd><p class="startdd">The MIDI message(s) would not fit into <em>count</em> bytes.</p>
<p class="enddd"></p>
</dd>
</dl>
</dd></dl>
<dl class="user"><dt><b>Conforming to:</b></dt><dd>LSB 3.2</dd></dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="group___m_i_d_i___event.html#ga1d6bd40b70cdd77e500b25e6eec19484" title="Resets MIDI decode parser.">snd_midi_event_reset_decode</a>, <a class="el" href="group___m_i_d_i___event.html#ga4c32d90809d0c2d44fb41be0276100df" title="Enables/disables MIDI command merging.">snd_midi_event_no_status</a> </dd></dl>
</div>
</div>
<a class="anchor" id="gae44531e8091bdd6e97a5b70e7b81ea10"></a><!-- doxytag: member="seq_midi_event.h::snd_midi_event_encode" ref="gae44531e8091bdd6e97a5b70e7b81ea10" args="(snd_midi_event_t *dev, const unsigned char *buf, long count, snd_seq_event_t *ev)" -->
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<td class="memname">long snd_midi_event_encode </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> * </td>
<td class="paramname"> <em>dev</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const unsigned char * </td>
<td class="paramname"> <em>buf</em>, </td>
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<td class="paramtype">long </td>
<td class="paramname"> <em>count</em>, </td>
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<td class="paramtype"><a class="el" href="structsnd__seq__event__t.html">snd_seq_event_t</a> * </td>
<td class="paramname"> <em>ev</em></td><td> </td>
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<td>)</td>
<td></td><td></td><td></td>
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<p>Encodes bytes to sequencer event. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><tt>[in]</tt> </td><td valign="top"><em>dev</em> </td><td>MIDI event parser. </td></tr>
<tr><td valign="top"><tt>[in]</tt> </td><td valign="top"><em>buf</em> </td><td>Buffer containing bytes of a raw MIDI stream. </td></tr>
<tr><td valign="top"><tt>[in]</tt> </td><td valign="top"><em>count</em> </td><td>Number of bytes in <em>buf</em>. </td></tr>
<tr><td valign="top"><tt>[out]</tt> </td><td valign="top"><em>ev</em> </td><td>Sequencer event. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>The number of bytes consumed, or a negative error code.</dd></dl>
<p>This function tries to use up to <em>count</em> bytes from the beginning of the buffer to encode a sequencer event. If a complete MIDI message has been encoded, the sequencer event is written to <em>ev</em>; otherwise, <em>ev->type</em> is set to <a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a78b0f3e8f6d674f01d3823481c0b90f6">SND_SEQ_EVENT_NONE</a>, and further bytes are required to complete a message.</p>
<p>The buffer in <em>dev</em> is used to hold any bytes of a not-yet-complete MIDI message. If a System Exclusive message is larger than the buffer, the message is split into multiple parts, and a sequencer event is returned at the end of each part.</p>
<p>Any bytes that are not part of a valid MIDI message are silently ignored, i.e., they are consumed without signaling an error.</p>
<p>When this function returns a system exclusive sequencer event (<em>ev->type</em> is <a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a053842a32bef6aac4c8b21b2fc80fc74">SND_SEQ_EVENT_SYSEX</a>), the data pointer (<em>ev->data.ext.ptr</em>) points into the MIDI event parser's buffer. Therefore, the sequencer event can only be used as long as that buffer remains valid, i.e., until the next call to <a class="el" href="group___m_i_d_i___event.html#gae44531e8091bdd6e97a5b70e7b81ea10" title="Encodes bytes to sequencer event.">snd_midi_event_encode</a>, <a class="el" href="group___m_i_d_i___event.html#gab758a60cfa82dfa28e08ba2e2cbe2149" title="Encodes byte to sequencer event.">snd_midi_event_encode_byte</a>, <a class="el" href="group___m_i_d_i___event.html#ga22cffc488269968de6cae6796f92ee12" title="Resizes the MIDI message encoding buffer.">snd_midi_event_resize_buffer</a>, <a class="el" href="group___m_i_d_i___event.html#ga670f51a0ce1402b7d03c2a3f5b2801ed" title="Resets MIDI encode/decode parsers.">snd_midi_event_init</a>, <a class="el" href="group___m_i_d_i___event.html#ga54a3d6f03dc0f83ae32d7b12b1da7e63" title="Resets MIDI encode parser.">snd_midi_event_reset_encode</a>, or <a class="el" href="group___m_i_d_i___event.html#ga84b9fdddfc1996d0abf759773593931f" title="Frees a MIDI event parser.">snd_midi_event_free</a> for that MIDI event parser.</p>
<p>This function can generate any sequencer event that corresponds to a MIDI message, i.e.:</p>
<ul>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40aa7359bc2f050a79c5021cfa90d0705f8">SND_SEQ_EVENT_NOTEOFF</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40af35df63c334c5388ff349550e31460c2">SND_SEQ_EVENT_NOTEON</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a6d7adef3e4f2ed96cd7e2def9d541510">SND_SEQ_EVENT_KEYPRESS</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a926c84318eb653c739e1d21fa20a0d95">SND_SEQ_EVENT_CONTROLLER</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40ae8264fb5f3870a1e5f6c2724b916cefd">SND_SEQ_EVENT_PGMCHANGE</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a7eb97df129127eb771e9800da217f1fe">SND_SEQ_EVENT_CHANPRESS</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40ab1bb9ffa38e5247f993f9368a144336b">SND_SEQ_EVENT_PITCHBEND</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a053842a32bef6aac4c8b21b2fc80fc74">SND_SEQ_EVENT_SYSEX</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40ad2bcd713ea5fc228791eb95545cdf23f">SND_SEQ_EVENT_QFRAME</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a04f1e8a2a2201a7fbddf628b127dab39">SND_SEQ_EVENT_SONGPOS</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40afc621686c4f2ac288e24ff8d0aa448bd">SND_SEQ_EVENT_SONGSEL</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a60918a2617fd3435decbf96029994ac1">SND_SEQ_EVENT_TUNE_REQUEST</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a54f38f955c675d0e9624f67befe513b9">SND_SEQ_EVENT_CLOCK</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40aeca878e55b4482dc3d83bbc1c1411f0a">SND_SEQ_EVENT_START</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a85633da32af8af5efa596a7f68cff5c7">SND_SEQ_EVENT_CONTINUE</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a8bda57193eede5c6d45a34a135c8d95d">SND_SEQ_EVENT_STOP</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40af0cd5b4a2aa37ee9b34c6ecdde1b32b2">SND_SEQ_EVENT_SENSING</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40aefe6bb7adade51add7905856d70efc65">SND_SEQ_EVENT_RESET</a></li>
</ul>
<p>Some implementations may also be able to generate the following events for a sequence of controller change messages:</p>
<ul>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a931edc93b65db5e11be1670166a6623b">SND_SEQ_EVENT_CONTROL14</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40a83eb21e2fe5bf509d0d9c4a911f0cd36">SND_SEQ_EVENT_NONREGPARAM</a></li>
<li><a class="el" href="group___seq_events.html#ggaef39e1f267006faf7abc91c3cb32ea40ae85ad451b5012c5d4f37bec4cb39516c">SND_SEQ_EVENT_REGPARAM</a></li>
</ul>
<dl class="user"><dt><b>Conforming to:</b></dt><dd>LSB 3.2</dd></dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="group___m_i_d_i___event.html#gaa3c1797128d84a182197f5dd853c53ec" title="Creates a MIDI event parser.">snd_midi_event_new</a>, <a class="el" href="group___m_i_d_i___event.html#ga54a3d6f03dc0f83ae32d7b12b1da7e63" title="Resets MIDI encode parser.">snd_midi_event_reset_encode</a>, <a class="el" href="group___m_i_d_i___event.html#gab758a60cfa82dfa28e08ba2e2cbe2149" title="Encodes byte to sequencer event.">snd_midi_event_encode_byte</a> </dd></dl>
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<a class="anchor" id="gab758a60cfa82dfa28e08ba2e2cbe2149"></a><!-- doxytag: member="seq_midi_event.h::snd_midi_event_encode_byte" ref="gab758a60cfa82dfa28e08ba2e2cbe2149" args="(snd_midi_event_t *dev, int c, snd_seq_event_t *ev)" -->
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<td class="memname">int snd_midi_event_encode_byte </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> * </td>
<td class="paramname"> <em>dev</em>, </td>
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<td class="paramtype">int </td>
<td class="paramname"> <em>c</em>, </td>
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<td></td>
<td class="paramtype"><a class="el" href="structsnd__seq__event__t.html">snd_seq_event_t</a> * </td>
<td class="paramname"> <em>ev</em></td><td> </td>
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<p>Encodes byte to sequencer event. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><tt>[in]</tt> </td><td valign="top"><em>dev</em> </td><td>MIDI event parser. </td></tr>
<tr><td valign="top"><tt>[in]</tt> </td><td valign="top"><em>c</em> </td><td>A byte of a raw MIDI stream. </td></tr>
<tr><td valign="top"><tt>[out]</tt> </td><td valign="top"><em>ev</em> </td><td>Sequencer event. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>1 if a sequenver event has been completed, 0 if more bytes are required to complete an event, or a negative error code.</dd></dl>
<p>This function tries to use the byte <em>c</em> to encode a sequencer event. If a complete MIDI message has been encoded, the sequencer event is written to <em>ev</em>; otherwise, further bytes are required to complete a message.</p>
<p>See also the description of <a class="el" href="group___m_i_d_i___event.html#gae44531e8091bdd6e97a5b70e7b81ea10" title="Encodes bytes to sequencer event.">snd_midi_event_encode</a>.</p>
<dl class="user"><dt><b>Conforming to:</b></dt><dd>LSB 3.2</dd></dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="group___m_i_d_i___event.html#gaa3c1797128d84a182197f5dd853c53ec" title="Creates a MIDI event parser.">snd_midi_event_new</a>, <a class="el" href="group___m_i_d_i___event.html#ga54a3d6f03dc0f83ae32d7b12b1da7e63" title="Resets MIDI encode parser.">snd_midi_event_reset_encode</a>, <a class="el" href="group___m_i_d_i___event.html#gae44531e8091bdd6e97a5b70e7b81ea10" title="Encodes bytes to sequencer event.">snd_midi_event_encode</a> </dd></dl>
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<a class="anchor" id="ga84b9fdddfc1996d0abf759773593931f"></a><!-- doxytag: member="seq_midi_event.h::snd_midi_event_free" ref="ga84b9fdddfc1996d0abf759773593931f" args="(snd_midi_event_t *dev)" -->
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<td class="memname">void snd_midi_event_free </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> * </td>
<td class="paramname"> <em>dev</em></td>
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<p>Frees a MIDI event parser. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>dev</em> </td><td>MIDI event parser.</td></tr>
</table>
</dd>
</dl>
<p>Frees a MIDI event parser.</p>
<dl class="user"><dt><b>Conforming to:</b></dt><dd>LSB 3.2 </dd></dl>
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<a class="anchor" id="ga670f51a0ce1402b7d03c2a3f5b2801ed"></a><!-- doxytag: member="seq_midi_event.h::snd_midi_event_init" ref="ga670f51a0ce1402b7d03c2a3f5b2801ed" args="(snd_midi_event_t *dev)" -->
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<td class="memname">void snd_midi_event_init </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> * </td>
<td class="paramname"> <em>dev</em></td>
<td> ) </td>
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<p>Resets MIDI encode/decode parsers. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>dev</em> </td><td>MIDI event parser.</td></tr>
</table>
</dd>
</dl>
<p>This function resets both encoder and decoder of the MIDI event parser. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="group___m_i_d_i___event.html#ga54a3d6f03dc0f83ae32d7b12b1da7e63" title="Resets MIDI encode parser.">snd_midi_event_reset_encode</a>, <a class="el" href="group___m_i_d_i___event.html#ga1d6bd40b70cdd77e500b25e6eec19484" title="Resets MIDI decode parser.">snd_midi_event_reset_decode</a></dd></dl>
<dl class="user"><dt><b>Conforming to:</b></dt><dd>LSB 3.2 </dd></dl>
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<a class="anchor" id="gaa3c1797128d84a182197f5dd853c53ec"></a><!-- doxytag: member="seq_midi_event.h::snd_midi_event_new" ref="gaa3c1797128d84a182197f5dd853c53ec" args="(size_t bufsize, snd_midi_event_t **rdev)" -->
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<td class="memname">int snd_midi_event_new </td>
<td>(</td>
<td class="paramtype">size_t </td>
<td class="paramname"> <em>bufsize</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> ** </td>
<td class="paramname"> <em>rdev</em></td><td> </td>
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<p>Creates a MIDI event parser. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><tt>[in]</tt> </td><td valign="top"><em>bufsize</em> </td><td>Size of the buffer used for encoding; this should be large enough to hold the largest MIDI message to be encoded. </td></tr>
<tr><td valign="top"><tt>[out]</tt> </td><td valign="top"><em>rdev</em> </td><td>The new MIDI event parser. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>Zero on success, otherwise a negative error code.</dd></dl>
<p>This function creates and initializes a MIDI parser object that can be used to convert a MIDI byte stream to sequencer events (encoding) and/or to convert sequencer events to a MIDI byte stream (decoding).</p>
<dl class="user"><dt><b>Errors:</b></dt><dd><dl>
<dt>-ENOMEM</dt>
<dd><p class="startdd">Out of memory.</p>
<p class="enddd"></p>
</dd>
</dl>
</dd></dl>
<dl class="user"><dt><b>Conforming to:</b></dt><dd>LSB 3.2 </dd></dl>
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<a class="anchor" id="ga4c32d90809d0c2d44fb41be0276100df"></a><!-- doxytag: member="seq_midi_event.h::snd_midi_event_no_status" ref="ga4c32d90809d0c2d44fb41be0276100df" args="(snd_midi_event_t *dev, int on)" -->
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<td class="memname">void snd_midi_event_no_status </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> * </td>
<td class="paramname"> <em>dev</em>, </td>
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<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>on</em></td><td> </td>
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<p>Enables/disables MIDI command merging. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>dev</em> </td><td>MIDI event parser. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>on</em> </td><td>0 to enable MIDI command merging, 1 to always write the command byte.</td></tr>
</table>
</dd>
</dl>
<p>This function enables or disables MIDI command merging (running status).</p>
<p>When MIDI command merging is not disabled, <a class="el" href="group___m_i_d_i___event.html#ga9ef018a85ec7f61d45d8b17083bf8cc3" title="Decodes sequencer event to MIDI byte stream.">snd_midi_event_decode</a> is allowed to omit any status byte that is identical to the previous status byte. </p>
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<a class="anchor" id="ga1d6bd40b70cdd77e500b25e6eec19484"></a><!-- doxytag: member="seq_midi_event.h::snd_midi_event_reset_decode" ref="ga1d6bd40b70cdd77e500b25e6eec19484" args="(snd_midi_event_t *dev)" -->
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<td class="memname">void snd_midi_event_reset_decode </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> * </td>
<td class="paramname"> <em>dev</em></td>
<td> ) </td>
<td></td>
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<p>Resets MIDI decode parser. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>dev</em> </td><td>MIDI event parser.</td></tr>
</table>
</dd>
</dl>
<p>This function resets the MIDI decoder of the parser <em>dev</em>. The next decoded message does not use running status from before the call to <em>snd_midi_event_reset_decode</em>.</p>
<dl class="user"><dt><b>Conforming to:</b></dt><dd>LSB 3.2 </dd></dl>
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<a class="anchor" id="ga54a3d6f03dc0f83ae32d7b12b1da7e63"></a><!-- doxytag: member="seq_midi_event.h::snd_midi_event_reset_encode" ref="ga54a3d6f03dc0f83ae32d7b12b1da7e63" args="(snd_midi_event_t *dev)" -->
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<td class="memname">void snd_midi_event_reset_encode </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> * </td>
<td class="paramname"> <em>dev</em></td>
<td> ) </td>
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<p>Resets MIDI encode parser. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>dev</em> </td><td>MIDI event parser.</td></tr>
</table>
</dd>
</dl>
<p>This function resets the MIDI encoder of the parser <em>dev</em>. Any partially encoded MIDI message is dropped, and running status state is cleared.</p>
<dl class="user"><dt><b>Conforming to:</b></dt><dd>LSB 3.2 </dd></dl>
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<a class="anchor" id="ga22cffc488269968de6cae6796f92ee12"></a><!-- doxytag: member="seq_midi_event.h::snd_midi_event_resize_buffer" ref="ga22cffc488269968de6cae6796f92ee12" args="(snd_midi_event_t *dev, size_t bufsize)" -->
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<td class="memname">int snd_midi_event_resize_buffer </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___m_i_d_i___event.html#gaf4d255a5c5228aa8d46a9c3e368a0e4b">snd_midi_event_t</a> * </td>
<td class="paramname"> <em>dev</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"> <em>bufsize</em></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td></td>
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<p>Resizes the MIDI message encoding buffer. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>dev</em> </td><td>MIDI event parser. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>bufsize</em> </td><td>The new buffer size. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>Zero on success, otherwise a negative error code.</dd></dl>
<p>This function resizes the buffer that is used to hold partially encoded MIDI messages.</p>
<p>If there is a partially encoded message in the buffer, it is dropped.</p>
<dl class="user"><dt><b>Errors:</b></dt><dd><dl>
<dt>-ENOMEM</dt>
<dd><p class="startdd">Out of memory.</p>
<p class="enddd"></p>
</dd>
</dl>
</dd></dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="group___m_i_d_i___event.html#gae44531e8091bdd6e97a5b70e7b81ea10" title="Encodes bytes to sequencer event.">snd_midi_event_encode</a>, <a class="el" href="group___m_i_d_i___event.html#ga54a3d6f03dc0f83ae32d7b12b1da7e63" title="Resets MIDI encode parser.">snd_midi_event_reset_encode</a> </dd></dl>
</div>
</div>
</div>
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