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| <a href="#gst-plugins-base-libs-gstaudioiec61937.description" class="shortcut">Description</a> |
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| <h2><span class="refentrytitle"><a name="gst-plugins-base-libs-gstaudioiec61937.top_of_page"></a>gstaudioiec61937</span></h2> |
| <p>gstaudioiec61937 — Utility functions for IEC 61937 payloading</p> |
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| <div class="refsynopsisdiv"> |
| <a name="gst-plugins-base-libs-gstaudioiec61937.synopsis"></a><h2>Synopsis</h2> |
| <pre class="synopsis"> |
| #include <gst/audio/gstaudioiec61937.h> |
| |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a> <a class="link" href="gst-plugins-base-libs-gstaudioiec61937.html#gst-audio-iec61937-frame-size" title="gst_audio_iec61937_frame_size ()">gst_audio_iec61937_frame_size</a> (<em class="parameter"><code>const <a class="link" href="gst-plugins-base-libs-gstaudioringbuffer.html#GstAudioRingBufferSpec" title="struct GstAudioRingBufferSpec"><span class="type">GstAudioRingBufferSpec</span></a> *spec</code></em>); |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="gst-plugins-base-libs-gstaudioiec61937.html#gst-audio-iec61937-payload" title="gst_audio_iec61937_payload ()">gst_audio_iec61937_payload</a> (<em class="parameter"><code>const <span class="type">guint8</span> *src</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> src_n</code></em>, |
| <em class="parameter"><code><span class="type">guint8</span> *dst</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> dst_n</code></em>, |
| <em class="parameter"><code>const <a class="link" href="gst-plugins-base-libs-gstaudioringbuffer.html#GstAudioRingBufferSpec" title="struct GstAudioRingBufferSpec"><span class="type">GstAudioRingBufferSpec</span></a> *spec</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> endianness</code></em>); |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-libs-gstaudioiec61937.description"></a><h2>Description</h2> |
| <p> |
| This module contains some helper functions for encapsulating various |
| audio formats in IEC 61937 headers and padding. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-libs-gstaudioiec61937.details"></a><h2>Details</h2> |
| <div class="refsect2"> |
| <a name="gst-audio-iec61937-frame-size"></a><h3>gst_audio_iec61937_frame_size ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a> gst_audio_iec61937_frame_size (<em class="parameter"><code>const <a class="link" href="gst-plugins-base-libs-gstaudioringbuffer.html#GstAudioRingBufferSpec" title="struct GstAudioRingBufferSpec"><span class="type">GstAudioRingBufferSpec</span></a> *spec</code></em>);</pre> |
| <p> |
| Calculated the size of the buffer expected by <a class="link" href="gst-plugins-base-libs-gstaudioiec61937.html#gst-audio-iec61937-payload" title="gst_audio_iec61937_payload ()"><code class="function">gst_audio_iec61937_payload()</code></a> for |
| payloading type from <em class="parameter"><code>spec</code></em>. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>spec</code></em> :</span></p></td> |
| <td>the ringbufer spec</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the size or 0 if the given <em class="parameter"><code>type</code></em> is not supported or cannot be |
| payloaded.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-audio-iec61937-payload"></a><h3>gst_audio_iec61937_payload ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gst_audio_iec61937_payload (<em class="parameter"><code>const <span class="type">guint8</span> *src</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> src_n</code></em>, |
| <em class="parameter"><code><span class="type">guint8</span> *dst</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> dst_n</code></em>, |
| <em class="parameter"><code>const <a class="link" href="gst-plugins-base-libs-gstaudioringbuffer.html#GstAudioRingBufferSpec" title="struct GstAudioRingBufferSpec"><span class="type">GstAudioRingBufferSpec</span></a> *spec</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> endianness</code></em>);</pre> |
| <p> |
| Payloads <em class="parameter"><code>src</code></em> in the form specified by IEC 61937 for the type from <em class="parameter"><code>spec</code></em> and |
| stores the result in <em class="parameter"><code>dst</code></em>. <em class="parameter"><code>src</code></em> must contain exactly one frame of data and |
| the frame is not checked for errors. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>src</code></em> :</span></p></td> |
| <td>a buffer containing the data to payload. <span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=src_n]</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>src_n</code></em> :</span></p></td> |
| <td>size of <em class="parameter"><code>src</code></em> in bytes</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>dst</code></em> :</span></p></td> |
| <td>the destination buffer to store the |
| payloaded contents in. Should not overlap with <em class="parameter"><code>src</code></em>. <span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=dst_n]</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>dst_n</code></em> :</span></p></td> |
| <td>size of <em class="parameter"><code>dst</code></em> in bytes</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>spec</code></em> :</span></p></td> |
| <td>the ringbufer spec for <em class="parameter"><code>src</code></em> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>endianness</code></em> :</span></p></td> |
| <td>the expected byte order of the payloaded data</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>transfer-full: <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the payloading was successful, <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> |
| otherwise.</td> |
| </tr> |
| </tbody> |
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