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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>gstaudio</title>
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                  <a href="#gst-plugins-base-libs-gstaudio.description" class="shortcut">Description</a>
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<h2><span class="refentrytitle"><a name="gst-plugins-base-libs-gstaudio.top_of_page"></a>gstaudio</span></h2>
<p>gstaudio — Support library for audio elements</p>
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<div class="refsynopsisdiv">
<a name="gst-plugins-base-libs-gstaudio.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include &lt;gst/audio/audio.h&gt;

enum                <a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFlags" title="enum GstAudioFlags">GstAudioFlags</a>;
enum                <a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFormat" title="enum GstAudioFormat">GstAudioFormat</a>;
enum                <a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFormatFlags" title="enum GstAudioFormatFlags">GstAudioFormatFlags</a>;
struct              <a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFormatInfo" title="struct GstAudioFormatInfo">GstAudioFormatInfo</a>;
struct              <a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo">GstAudioInfo</a>;
<span class="returnvalue">void</span>                <a class="link" href="gst-plugins-base-libs-gstaudio.html#gst-audio-info-init" title="gst_audio_info_init ()">gst_audio_info_init</a>                 (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="type">GstAudioInfo</span></a> *info</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="gst-plugins-base-libs-gstaudio.html#gst-audio-info-clear" title="gst_audio_info_clear ()">gst_audio_info_clear</a>                (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="type">GstAudioInfo</span></a> *info</code></em>);
<a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="returnvalue">GstAudioInfo</span></a> *      <a class="link" href="gst-plugins-base-libs-gstaudio.html#gst-audio-info-copy" title="gst_audio_info_copy ()">gst_audio_info_copy</a>                 (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="type">GstAudioInfo</span></a> *info</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="gst-plugins-base-libs-gstaudio.html#gst-audio-info-free" title="gst_audio_info_free ()">gst_audio_info_free</a>                 (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="type">GstAudioInfo</span></a> *info</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="gst-plugins-base-libs-gstaudio.html#gst-audio-info-from-caps" title="gst_audio_info_from_caps ()">gst_audio_info_from_caps</a>            (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="type">GstAudioInfo</span></a> *info</code></em>,
                                                         <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="returnvalue">GstCaps</span></a> *           <a class="link" href="gst-plugins-base-libs-gstaudio.html#gst-audio-info-to-caps" title="gst_audio_info_to_caps ()">gst_audio_info_to_caps</a>              (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="type">GstAudioInfo</span></a> *info</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="gst-plugins-base-libs-gstaudio.html#gst-audio-info-convert" title="gst_audio_info_convert ()">gst_audio_info_convert</a>              (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="type">GstAudioInfo</span></a> *info</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstFormat.html#GstFormat"><span class="type">GstFormat</span></a> src_fmt</code></em>,
                                                         <em class="parameter"><code><span class="type">gint64</span> src_val</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstFormat.html#GstFormat"><span class="type">GstFormat</span></a> dest_fmt</code></em>,
                                                         <em class="parameter"><code><span class="type">gint64</span> *dest_val</code></em>);
const <a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFormatInfo" title="struct GstAudioFormatInfo"><span class="returnvalue">GstAudioFormatInfo</span></a> * <a class="link" href="gst-plugins-base-libs-gstaudio.html#gst-audio-format-get-info" title="gst_audio_format_get_info ()">gst_audio_format_get_info</a>    (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFormat" title="enum GstAudioFormat"><span class="type">GstAudioFormat</span></a> format</code></em>);
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-FORMAT-INFO-DEPTH:CAPS" title="GST_AUDIO_FORMAT_INFO_DEPTH()">GST_AUDIO_FORMAT_INFO_DEPTH</a>         (info)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-FORMAT-INFO-ENDIANNESS:CAPS" title="GST_AUDIO_FORMAT_INFO_ENDIANNESS()">GST_AUDIO_FORMAT_INFO_ENDIANNESS</a>    (info)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-FORMAT-INFO-FLAGS:CAPS" title="GST_AUDIO_FORMAT_INFO_FLAGS()">GST_AUDIO_FORMAT_INFO_FLAGS</a>         (info)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-FORMAT-INFO-FORMAT:CAPS" title="GST_AUDIO_FORMAT_INFO_FORMAT()">GST_AUDIO_FORMAT_INFO_FORMAT</a>        (info)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-FORMAT-INFO-IS-FLOAT:CAPS" title="GST_AUDIO_FORMAT_INFO_IS_FLOAT()">GST_AUDIO_FORMAT_INFO_IS_FLOAT</a>      (info)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-FORMAT-INFO-IS-INTEGER:CAPS" title="GST_AUDIO_FORMAT_INFO_IS_INTEGER()">GST_AUDIO_FORMAT_INFO_IS_INTEGER</a>    (info)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-FORMAT-INFO-IS-BIG-ENDIAN:CAPS" title="GST_AUDIO_FORMAT_INFO_IS_BIG_ENDIAN()">GST_AUDIO_FORMAT_INFO_IS_BIG_ENDIAN</a> (info)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-FORMAT-INFO-IS-LITTLE-ENDIAN:CAPS" title="GST_AUDIO_FORMAT_INFO_IS_LITTLE_ENDIAN()">GST_AUDIO_FORMAT_INFO_IS_LITTLE_ENDIAN</a>(info)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-FORMAT-INFO-IS-SIGNED:CAPS" title="GST_AUDIO_FORMAT_INFO_IS_SIGNED()">GST_AUDIO_FORMAT_INFO_IS_SIGNED</a>     (info)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-FORMAT-INFO-NAME:CAPS" title="GST_AUDIO_FORMAT_INFO_NAME()">GST_AUDIO_FORMAT_INFO_NAME</a>          (info)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-FORMAT-INFO-WIDTH:CAPS" title="GST_AUDIO_FORMAT_INFO_WIDTH()">GST_AUDIO_FORMAT_INFO_WIDTH</a>         (info)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-INFO-BPF:CAPS" title="GST_AUDIO_INFO_BPF()">GST_AUDIO_INFO_BPF</a>                  (info)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-INFO-BPS:CAPS" title="GST_AUDIO_INFO_BPS()">GST_AUDIO_INFO_BPS</a>                  (info)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-INFO-CHANNELS:CAPS" title="GST_AUDIO_INFO_CHANNELS()">GST_AUDIO_INFO_CHANNELS</a>             (info)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-INFO-DEPTH:CAPS" title="GST_AUDIO_INFO_DEPTH()">GST_AUDIO_INFO_DEPTH</a>                (i)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-INFO-FLAGS:CAPS" title="GST_AUDIO_INFO_FLAGS()">GST_AUDIO_INFO_FLAGS</a>                (info)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-INFO-FORMAT:CAPS" title="GST_AUDIO_INFO_FORMAT()">GST_AUDIO_INFO_FORMAT</a>               (i)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-INFO-HAS-DEFAULT-POSITIONS:CAPS" title="GST_AUDIO_INFO_HAS_DEFAULT_POSITIONS()">GST_AUDIO_INFO_HAS_DEFAULT_POSITIONS</a>(info)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-INFO-NAME:CAPS" title="GST_AUDIO_INFO_NAME()">GST_AUDIO_INFO_NAME</a>                 (i)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-INFO-POSITION:CAPS" title="GST_AUDIO_INFO_POSITION()">GST_AUDIO_INFO_POSITION</a>             (info,
                                                         c)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-INFO-RATE:CAPS" title="GST_AUDIO_INFO_RATE()">GST_AUDIO_INFO_RATE</a>                 (info)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-INFO-WIDTH:CAPS" title="GST_AUDIO_INFO_WIDTH()">GST_AUDIO_INFO_WIDTH</a>                (i)
enum                <a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFieldFlag" title="enum GstAudioFieldFlag">GstAudioFieldFlag</a>;
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-FRAMES-TO-CLOCK-TIME:CAPS" title="GST_FRAMES_TO_CLOCK_TIME()">GST_FRAMES_TO_CLOCK_TIME</a>            (frames,
                                                         rate)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-CLOCK-TIME-TO-FRAMES:CAPS" title="GST_CLOCK_TIME_TO_FRAMES()">GST_CLOCK_TIME_TO_FRAMES</a>            (clocktime,
                                                         rate)
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-DEF-RATE:CAPS" title="GST_AUDIO_DEF_RATE">GST_AUDIO_DEF_RATE</a>
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-FLOAT-PAD-TEMPLATE-CAPS" title="GST_AUDIO_FLOAT_PAD_TEMPLATE_CAPS">GST_AUDIO_FLOAT_PAD_TEMPLATE_CAPS</a>
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-FLOAT-STANDARD-PAD-TEMPLATE-CAPS" title="GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_CAPS">GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_CAPS</a>
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-INT-PAD-TEMPLATE-CAPS" title="GST_AUDIO_INT_PAD_TEMPLATE_CAPS">GST_AUDIO_INT_PAD_TEMPLATE_CAPS</a>
#define             <a class="link" href="gst-plugins-base-libs-gstaudio.html#GST-AUDIO-INT-STANDARD-PAD-TEMPLATE-CAPS" title="GST_AUDIO_INT_STANDARD_PAD_TEMPLATE_CAPS">GST_AUDIO_INT_STANDARD_PAD_TEMPLATE_CAPS</a>
<span class="returnvalue">int</span>                 <a class="link" href="gst-plugins-base-libs-gstaudio.html#gst-audio-frame-byte-size" title="gst_audio_frame_byte_size ()">gst_audio_frame_byte_size</a>           (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstPad.html"><span class="type">GstPad</span></a> *pad</code></em>);
<span class="returnvalue">long</span>                <a class="link" href="gst-plugins-base-libs-gstaudio.html#gst-audio-frame-length" title="gst_audio_frame_length ()">gst_audio_frame_length</a>              (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstPad.html"><span class="type">GstPad</span></a> *pad</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buf</code></em>);
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstClock.html#GstClockTime"><span class="returnvalue">GstClockTime</span></a>        <a class="link" href="gst-plugins-base-libs-gstaudio.html#gst-audio-duration-from-pad-buffer" title="gst_audio_duration_from_pad_buffer ()">gst_audio_duration_from_pad_buffer</a>  (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstPad.html"><span class="type">GstPad</span></a> *pad</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buf</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="gst-plugins-base-libs-gstaudio.html#gst-audio-is-buffer-framed" title="gst_audio_is_buffer_framed ()">gst_audio_is_buffer_framed</a>          (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstPad.html"><span class="type">GstPad</span></a> *pad</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buf</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="gst-plugins-base-libs-gstaudio.html#gst-audio-structure-set-int" title="gst_audio_structure_set_int ()">gst_audio_structure_set_int</a>         (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstStructure.html#GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>,
                                                         <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFieldFlag" title="enum GstAudioFieldFlag"><span class="type">GstAudioFieldFlag</span></a> flag</code></em>);
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBuffer.html#GstBuffer"><span class="returnvalue">GstBuffer</span></a> *         <a class="link" href="gst-plugins-base-libs-gstaudio.html#gst-audio-buffer-clip" title="gst_audio_buffer_clip ()">gst_audio_buffer_clip</a>               (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstSegment.html#GstSegment"><span class="type">GstSegment</span></a> *segment</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> rate</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> frame_size</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstaudio.description"></a><h2>Description</h2>
<p>
This library contains some helper functions for audio elements.
</p>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstaudio.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GstAudioFlags"></a><h3>enum GstAudioFlags</h3>
<pre class="programlisting">typedef enum {
  GST_AUDIO_FLAG_NONE         = 0,
  GST_AUDIO_FLAG_DEFAULT_POSITIONS = (1 &lt;&lt; 0)
} GstAudioFlags;
</pre>
<p>
Extra audio flags
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><a name="GST-AUDIO-FLAG-NONE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FLAG_NONE</code></span></p></td>
<td>no valid flag
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FLAG-DEFAULT-POSITIONS:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FLAG_DEFAULT_POSITIONS</code></span></p></td>
<td>unpositioned audio layout, position array
    contains the default layout (meaning that the channel layout was not
    explicitly specified in the caps)
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.36</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioFormat"></a><h3>enum GstAudioFormat</h3>
<pre class="programlisting">typedef enum {
  GST_AUDIO_FORMAT_UNKNOWN,
  /* 8 bit */
  GST_AUDIO_FORMAT_S8,
  GST_AUDIO_FORMAT_U8,
  /* 16 bit */
  GST_AUDIO_FORMAT_S16LE,
  GST_AUDIO_FORMAT_S16BE,
  GST_AUDIO_FORMAT_U16LE,
  GST_AUDIO_FORMAT_U16BE,
  /* 24 bit in low 3 bytes of 32 bits*/
  GST_AUDIO_FORMAT_S24_32LE,
  GST_AUDIO_FORMAT_S24_32BE,
  GST_AUDIO_FORMAT_U24_32LE,
  GST_AUDIO_FORMAT_U24_32BE,
  /* 32 bit */
  GST_AUDIO_FORMAT_S32LE,
  GST_AUDIO_FORMAT_S32BE,
  GST_AUDIO_FORMAT_U32LE,
  GST_AUDIO_FORMAT_U32BE,
  /* 24 bit in 3 bytes*/
  GST_AUDIO_FORMAT_S24LE,
  GST_AUDIO_FORMAT_S24BE,
  GST_AUDIO_FORMAT_U24LE,
  GST_AUDIO_FORMAT_U24BE,
  /* 20 bit in 3 bytes*/
  GST_AUDIO_FORMAT_S20LE,
  GST_AUDIO_FORMAT_S20BE,
  GST_AUDIO_FORMAT_U20LE,
  GST_AUDIO_FORMAT_U20BE,
  /* 18 bit in 3 bytes*/
  GST_AUDIO_FORMAT_S18LE,
  GST_AUDIO_FORMAT_S18BE,
  GST_AUDIO_FORMAT_U18LE,
  GST_AUDIO_FORMAT_U18BE,
  /* float */
  GST_AUDIO_FORMAT_F32LE,
  GST_AUDIO_FORMAT_F32BE,
  GST_AUDIO_FORMAT_F64LE,
  GST_AUDIO_FORMAT_F64BE,
  /* native endianness equivalents */
  GST_AUDIO_FORMAT_S16 = _GST_AUDIO_FORMAT_NE(S16),
  GST_AUDIO_FORMAT_U16 = _GST_AUDIO_FORMAT_NE(U16),
  GST_AUDIO_FORMAT_S24_32 = _GST_AUDIO_FORMAT_NE(S24_32),
  GST_AUDIO_FORMAT_U24_32 = _GST_AUDIO_FORMAT_NE(U24_32),
  GST_AUDIO_FORMAT_S32 = _GST_AUDIO_FORMAT_NE(S32),
  GST_AUDIO_FORMAT_U32 = _GST_AUDIO_FORMAT_NE(U32),
  GST_AUDIO_FORMAT_S24 = _GST_AUDIO_FORMAT_NE(S24),
  GST_AUDIO_FORMAT_U24 = _GST_AUDIO_FORMAT_NE(U24),
  GST_AUDIO_FORMAT_S20 = _GST_AUDIO_FORMAT_NE(S20),
  GST_AUDIO_FORMAT_U20 = _GST_AUDIO_FORMAT_NE(U20),
  GST_AUDIO_FORMAT_S18 = _GST_AUDIO_FORMAT_NE(S18),
  GST_AUDIO_FORMAT_U18 = _GST_AUDIO_FORMAT_NE(U18),
  GST_AUDIO_FORMAT_F32 = _GST_AUDIO_FORMAT_NE(F32),
  GST_AUDIO_FORMAT_F64 = _GST_AUDIO_FORMAT_NE(F64)
} GstAudioFormat;
</pre>
<p>
Enum value describing the most common audio formats.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-UNKNOWN:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_UNKNOWN</code></span></p></td>
<td>unknown audio format
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S8:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S8</code></span></p></td>
<td>8 bits in 8 bits, signed
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U8:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U8</code></span></p></td>
<td>8 bits in 8 bits, unsigned
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S16LE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S16LE</code></span></p></td>
<td>16 bits in 16 bits, signed, little endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S16BE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S16BE</code></span></p></td>
<td>16 bits in 16 bits, signed, big endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U16LE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U16LE</code></span></p></td>
<td>16 bits in 16 bits, unsigned, little endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U16BE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U16BE</code></span></p></td>
<td>16 bits in 16 bits, unsigned, big endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S24-32LE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S24_32LE</code></span></p></td>
<td>24 bits in 32 bits, signed, little endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S24-32BE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S24_32BE</code></span></p></td>
<td>24 bits in 32 bits, signed, big endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U24-32LE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U24_32LE</code></span></p></td>
<td>24 bits in 32 bits, unsigned, little endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U24-32BE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U24_32BE</code></span></p></td>
<td>24 bits in 32 bits, unsigned, big endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S32LE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S32LE</code></span></p></td>
<td>32 bits in 32 bits, signed, little endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S32BE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S32BE</code></span></p></td>
<td>32 bits in 32 bits, signed, big endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U32LE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U32LE</code></span></p></td>
<td>32 bits in 32 bits, unsigned, little endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U32BE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U32BE</code></span></p></td>
<td>32 bits in 32 bits, unsigned, big endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S24LE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S24LE</code></span></p></td>
<td>24 bits in 24 bits, signed, little endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S24BE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S24BE</code></span></p></td>
<td>24 bits in 24 bits, signed, big endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U24LE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U24LE</code></span></p></td>
<td>24 bits in 24 bits, unsigned, little endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U24BE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U24BE</code></span></p></td>
<td>24 bits in 24 bits, unsigned, big endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S20LE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S20LE</code></span></p></td>
<td>20 bits in 24 bits, signed, little endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S20BE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S20BE</code></span></p></td>
<td>20 bits in 24 bits, signed, big endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U20LE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U20LE</code></span></p></td>
<td>20 bits in 24 bits, unsigned, little endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U20BE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U20BE</code></span></p></td>
<td>20 bits in 24 bits, unsigned, big endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S18LE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S18LE</code></span></p></td>
<td>18 bits in 24 bits, signed, little endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S18BE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S18BE</code></span></p></td>
<td>18 bits in 24 bits, signed, big endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U18LE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U18LE</code></span></p></td>
<td>18 bits in 24 bits, unsigned, little endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U18BE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U18BE</code></span></p></td>
<td>18 bits in 24 bits, unsigned, big endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-F32LE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_F32LE</code></span></p></td>
<td>32-bit floating point samples, little endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-F32BE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_F32BE</code></span></p></td>
<td>32-bit floating point samples, big endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-F64LE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_F64LE</code></span></p></td>
<td>64-bit floating point samples, little endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-F64BE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_F64BE</code></span></p></td>
<td>64-bit floating point samples, big endian
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S16:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S16</code></span></p></td>
<td>16 bits in 16 bits, signed, native endianness
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U16:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U16</code></span></p></td>
<td>16 bits in 16 bits, unsigned, native endianness
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S24-32:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S24_32</code></span></p></td>
<td>24 bits in 32 bits, signed, native endianness
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U24-32:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U24_32</code></span></p></td>
<td>24 bits in 32 bits, unsigned, native endianness
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S32:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S32</code></span></p></td>
<td>32 bits in 32 bits, signed, native endianness
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U32:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U32</code></span></p></td>
<td>32 bits in 32 bits, unsigned, native endianness
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S24:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S24</code></span></p></td>
<td>24 bits in 24 bits, signed, native endianness
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U24:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U24</code></span></p></td>
<td>24 bits in 24 bits, unsigned, native endianness
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S20:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S20</code></span></p></td>
<td>20 bits in 24 bits, signed, native endianness
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U20:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U20</code></span></p></td>
<td>20 bits in 24 bits, unsigned, native endianness
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-S18:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_S18</code></span></p></td>
<td>18 bits in 24 bits, signed, native endianness
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-U18:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_U18</code></span></p></td>
<td>18 bits in 24 bits, unsigned, native endianness
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-F32:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_F32</code></span></p></td>
<td>32-bit floating point samples, native endianness
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-F64:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_F64</code></span></p></td>
<td>64-bit floating point samples, native endianness
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.36</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioFormatFlags"></a><h3>enum GstAudioFormatFlags</h3>
<pre class="programlisting">typedef enum {
  GST_AUDIO_FORMAT_FLAG_INTEGER  = (1 &lt;&lt; 0),
  GST_AUDIO_FORMAT_FLAG_FLOAT    = (1 &lt;&lt; 1),
  GST_AUDIO_FORMAT_FLAG_SIGNED   = (1 &lt;&lt; 2),
  GST_AUDIO_FORMAT_FLAG_COMPLEX  = (1 &lt;&lt; 4)
} GstAudioFormatFlags;
</pre>
<p>
The different audio flags that a format info can have.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-FLAG-INTEGER:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_FLAG_INTEGER</code></span></p></td>
<td>integer samples
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-FLAG-FLOAT:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_FLAG_FLOAT</code></span></p></td>
<td>float samples
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-FLAG-SIGNED:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_FLAG_SIGNED</code></span></p></td>
<td>signed samples
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FORMAT-FLAG-COMPLEX:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FORMAT_FLAG_COMPLEX</code></span></p></td>
<td>complex layout
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.36</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioFormatInfo"></a><h3>struct GstAudioFormatInfo</h3>
<pre class="programlisting">struct GstAudioFormatInfo {
  GstAudioFormat      format;
  const gchar *       name;
  GstAudioFormatFlags flags;
  gint                endianness;
  gint                width;
  gint                depth;
  guint8              silence[8];
};
</pre>
<p>
Information for an audio format.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFormat" title="enum GstAudioFormat"><span class="type">GstAudioFormat</span></a> <em class="structfield"><code><a name="GstAudioFormatInfo.format"></a>format</code></em>;</span></p></td>
<td><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFormat" title="enum GstAudioFormat"><span class="type">GstAudioFormat</span></a></td>
</tr>
<tr>
<td><p><span class="term">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="GstAudioFormatInfo.name"></a>name</code></em>;</span></p></td>
<td>string representation of the format</td>
</tr>
<tr>
<td><p><span class="term"><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFormatFlags" title="enum GstAudioFormatFlags"><span class="type">GstAudioFormatFlags</span></a> <em class="structfield"><code><a name="GstAudioFormatInfo.flags"></a>flags</code></em>;</span></p></td>
<td><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFormatFlags" title="enum GstAudioFormatFlags"><span class="type">GstAudioFormatFlags</span></a></td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> <em class="structfield"><code><a name="GstAudioFormatInfo.endianness"></a>endianness</code></em>;</span></p></td>
<td>the endianness</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> <em class="structfield"><code><a name="GstAudioFormatInfo.width"></a>width</code></em>;</span></p></td>
<td>amount of bits used for one sample</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> <em class="structfield"><code><a name="GstAudioFormatInfo.depth"></a>depth</code></em>;</span></p></td>
<td>amount of valid bits in <em class="parameter"><code>width</code></em>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint8</span> <em class="structfield"><code><a name="GstAudioFormatInfo.silence"></a>silence</code></em>[8];</span></p></td>
<td>
<em class="parameter"><code>width</code></em>/8 bytes with 1 silent sample</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.36</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioInfo"></a><h3>struct GstAudioInfo</h3>
<pre class="programlisting">struct GstAudioInfo {
  const GstAudioFormatInfo *finfo;
  GstAudioFlags             flags;
  gint                      rate;
  gint                      channels;
  gint                      bpf;
  GstAudioChannelPosition   position[64];
};
</pre>
<p>
Information describing audio properties. This information can be filled
in from GstCaps with <a class="link" href="gst-plugins-base-libs-gstaudio.html#gst-audio-info-from-caps" title="gst_audio_info_from_caps ()"><code class="function">gst_audio_info_from_caps()</code></a>.
</p>
<p>
Use the provided macros to access the info in this structure.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term">const <a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFormatInfo" title="struct GstAudioFormatInfo"><span class="type">GstAudioFormatInfo</span></a> *<em class="structfield"><code><a name="GstAudioInfo.finfo"></a>finfo</code></em>;</span></p></td>
<td>the format info of the audio</td>
</tr>
<tr>
<td><p><span class="term"><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFlags" title="enum GstAudioFlags"><span class="type">GstAudioFlags</span></a> <em class="structfield"><code><a name="GstAudioInfo.flags"></a>flags</code></em>;</span></p></td>
<td>additional audio flags</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> <em class="structfield"><code><a name="GstAudioInfo.rate"></a>rate</code></em>;</span></p></td>
<td>the audio sample rate</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> <em class="structfield"><code><a name="GstAudioInfo.channels"></a>channels</code></em>;</span></p></td>
<td>the number of channels</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> <em class="structfield"><code><a name="GstAudioInfo.bpf"></a>bpf</code></em>;</span></p></td>
<td>the number of bytes for one frame, this is the size of one
sample * <em class="parameter"><code>channels</code></em>
</td>
</tr>
<tr>
<td><p><span class="term"><a class="link" href="gst-plugins-base-libs-gstmultichannel.html#GstAudioChannelPosition" title="enum GstAudioChannelPosition"><span class="type">GstAudioChannelPosition</span></a> <em class="structfield"><code><a name="GstAudioInfo.position"></a>position</code></em>[64];</span></p></td>
<td>the position for each channel (assume all NONE for &gt;64 channels)</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.36</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-info-init"></a><h3>gst_audio_info_init ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                gst_audio_info_init                 (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="type">GstAudioInfo</span></a> *info</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-info-clear"></a><h3>gst_audio_info_clear ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                gst_audio_info_clear                (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="type">GstAudioInfo</span></a> *info</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-info-copy"></a><h3>gst_audio_info_copy ()</h3>
<pre class="programlisting"><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="returnvalue">GstAudioInfo</span></a> *      gst_audio_info_copy                 (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="type">GstAudioInfo</span></a> *info</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-info-free"></a><h3>gst_audio_info_free ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                gst_audio_info_free                 (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="type">GstAudioInfo</span></a> *info</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-info-from-caps"></a><h3>gst_audio_info_from_caps ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            gst_audio_info_from_caps            (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="type">GstAudioInfo</span></a> *info</code></em>,
                                                         <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>
Parse <em class="parameter"><code>caps</code></em> and update <em class="parameter"><code>info</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>info</code></em> :</span></p></td>
<td>a <a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="type">GstAudioInfo</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>caps</code></em> :</span></p></td>
<td>a <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE if <em class="parameter"><code>caps</code></em> could be parsed</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.36</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-info-to-caps"></a><h3>gst_audio_info_to_caps ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="returnvalue">GstCaps</span></a> *           gst_audio_info_to_caps              (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="type">GstAudioInfo</span></a> *info</code></em>);</pre>
<p>
Convert the values of <em class="parameter"><code>info</code></em> into a <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>info</code></em> :</span></p></td>
<td>a <a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="type">GstAudioInfo</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the new <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> containing the
info of <em class="parameter"><code>info</code></em>. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.36</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-info-convert"></a><h3>gst_audio_info_convert ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            gst_audio_info_convert              (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioInfo" title="struct GstAudioInfo"><span class="type">GstAudioInfo</span></a> *info</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstFormat.html#GstFormat"><span class="type">GstFormat</span></a> src_fmt</code></em>,
                                                         <em class="parameter"><code><span class="type">gint64</span> src_val</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstFormat.html#GstFormat"><span class="type">GstFormat</span></a> dest_fmt</code></em>,
                                                         <em class="parameter"><code><span class="type">gint64</span> *dest_val</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-format-get-info"></a><h3>gst_audio_format_get_info ()</h3>
<pre class="programlisting">const <a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFormatInfo" title="struct GstAudioFormatInfo"><span class="returnvalue">GstAudioFormatInfo</span></a> * gst_audio_format_get_info    (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFormat" title="enum GstAudioFormat"><span class="type">GstAudioFormat</span></a> format</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-FORMAT-INFO-DEPTH:CAPS"></a><h3>GST_AUDIO_FORMAT_INFO_DEPTH()</h3>
<pre class="programlisting">#define GST_AUDIO_FORMAT_INFO_DEPTH(info)            ((info)-&gt;depth)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-FORMAT-INFO-ENDIANNESS:CAPS"></a><h3>GST_AUDIO_FORMAT_INFO_ENDIANNESS()</h3>
<pre class="programlisting">#define GST_AUDIO_FORMAT_INFO_ENDIANNESS(info)       ((info)-&gt;endianness)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-FORMAT-INFO-FLAGS:CAPS"></a><h3>GST_AUDIO_FORMAT_INFO_FLAGS()</h3>
<pre class="programlisting">#define GST_AUDIO_FORMAT_INFO_FLAGS(info)            ((info)-&gt;flags)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-FORMAT-INFO-FORMAT:CAPS"></a><h3>GST_AUDIO_FORMAT_INFO_FORMAT()</h3>
<pre class="programlisting">#define GST_AUDIO_FORMAT_INFO_FORMAT(info)           ((info)-&gt;format)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-FORMAT-INFO-IS-FLOAT:CAPS"></a><h3>GST_AUDIO_FORMAT_INFO_IS_FLOAT()</h3>
<pre class="programlisting">#define GST_AUDIO_FORMAT_INFO_IS_FLOAT(info)         !!((info)-&gt;flags &amp; GST_AUDIO_FORMAT_FLAG_FLOAT)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-FORMAT-INFO-IS-INTEGER:CAPS"></a><h3>GST_AUDIO_FORMAT_INFO_IS_INTEGER()</h3>
<pre class="programlisting">#define GST_AUDIO_FORMAT_INFO_IS_INTEGER(info)       !!((info)-&gt;flags &amp; GST_AUDIO_FORMAT_FLAG_INTEGER)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-FORMAT-INFO-IS-BIG-ENDIAN:CAPS"></a><h3>GST_AUDIO_FORMAT_INFO_IS_BIG_ENDIAN()</h3>
<pre class="programlisting">#define GST_AUDIO_FORMAT_INFO_IS_BIG_ENDIAN(info)    ((info)-&gt;endianness == G_BIG_ENDIAN)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-FORMAT-INFO-IS-LITTLE-ENDIAN:CAPS"></a><h3>GST_AUDIO_FORMAT_INFO_IS_LITTLE_ENDIAN()</h3>
<pre class="programlisting">#define GST_AUDIO_FORMAT_INFO_IS_LITTLE_ENDIAN(info) ((info)-&gt;endianness == G_LITTLE_ENDIAN)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-FORMAT-INFO-IS-SIGNED:CAPS"></a><h3>GST_AUDIO_FORMAT_INFO_IS_SIGNED()</h3>
<pre class="programlisting">#define GST_AUDIO_FORMAT_INFO_IS_SIGNED(info)        !!((info)-&gt;flags &amp; GST_AUDIO_FORMAT_FLAG_SIGNED)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-FORMAT-INFO-NAME:CAPS"></a><h3>GST_AUDIO_FORMAT_INFO_NAME()</h3>
<pre class="programlisting">#define GST_AUDIO_FORMAT_INFO_NAME(info)             ((info)-&gt;name)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-FORMAT-INFO-WIDTH:CAPS"></a><h3>GST_AUDIO_FORMAT_INFO_WIDTH()</h3>
<pre class="programlisting">#define GST_AUDIO_FORMAT_INFO_WIDTH(info)            ((info)-&gt;width)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-INFO-BPF:CAPS"></a><h3>GST_AUDIO_INFO_BPF()</h3>
<pre class="programlisting">#define GST_AUDIO_INFO_BPF(info)             ((info)-&gt;bpf)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-INFO-BPS:CAPS"></a><h3>GST_AUDIO_INFO_BPS()</h3>
<pre class="programlisting">#define GST_AUDIO_INFO_BPS(info)             (GST_AUDIO_INFO_DEPTH(info) &gt;&gt; 3)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-INFO-CHANNELS:CAPS"></a><h3>GST_AUDIO_INFO_CHANNELS()</h3>
<pre class="programlisting">#define GST_AUDIO_INFO_CHANNELS(info)        ((info)-&gt;channels)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-INFO-DEPTH:CAPS"></a><h3>GST_AUDIO_INFO_DEPTH()</h3>
<pre class="programlisting">#define GST_AUDIO_INFO_DEPTH(i)              (GST_AUDIO_FORMAT_INFO_DEPTH((i)-&gt;finfo))
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-INFO-FLAGS:CAPS"></a><h3>GST_AUDIO_INFO_FLAGS()</h3>
<pre class="programlisting">#define GST_AUDIO_INFO_FLAGS(info)           ((info)-&gt;flags)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-INFO-FORMAT:CAPS"></a><h3>GST_AUDIO_INFO_FORMAT()</h3>
<pre class="programlisting">#define GST_AUDIO_INFO_FORMAT(i)             (GST_AUDIO_FORMAT_INFO_FORMAT((i)-&gt;finfo))
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-INFO-HAS-DEFAULT-POSITIONS:CAPS"></a><h3>GST_AUDIO_INFO_HAS_DEFAULT_POSITIONS()</h3>
<pre class="programlisting">#define GST_AUDIO_INFO_HAS_DEFAULT_POSITIONS(info) ((info)-&gt;flags &amp; GST_AUDIO_FLAG_DEFAULT_POSITIONS)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-INFO-NAME:CAPS"></a><h3>GST_AUDIO_INFO_NAME()</h3>
<pre class="programlisting">#define GST_AUDIO_INFO_NAME(i)               (GST_AUDIO_FORMAT_INFO_NAME((i)-&gt;finfo))
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-INFO-POSITION:CAPS"></a><h3>GST_AUDIO_INFO_POSITION()</h3>
<pre class="programlisting">#define GST_AUDIO_INFO_POSITION(info,c)      ((info)-&gt;position[c])
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-INFO-RATE:CAPS"></a><h3>GST_AUDIO_INFO_RATE()</h3>
<pre class="programlisting">#define GST_AUDIO_INFO_RATE(info)            ((info)-&gt;rate)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-INFO-WIDTH:CAPS"></a><h3>GST_AUDIO_INFO_WIDTH()</h3>
<pre class="programlisting">#define GST_AUDIO_INFO_WIDTH(i)              (GST_AUDIO_FORMAT_INFO_WIDTH((i)-&gt;finfo))
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioFieldFlag"></a><h3>enum GstAudioFieldFlag</h3>
<pre class="programlisting">typedef enum {
  GST_AUDIO_FIELD_RATE          = (1 &lt;&lt; 0),
  GST_AUDIO_FIELD_CHANNELS      = (1 &lt;&lt; 1),
  GST_AUDIO_FIELD_ENDIANNESS    = (1 &lt;&lt; 2),
  GST_AUDIO_FIELD_WIDTH         = (1 &lt;&lt; 3),
  GST_AUDIO_FIELD_DEPTH         = (1 &lt;&lt; 4),
  GST_AUDIO_FIELD_SIGNED        = (1 &lt;&lt; 5)
} GstAudioFieldFlag;
</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">GstAudioFieldFlag</code> is deprecated and should not be used in newly-written code. use <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstStructure.html#gst-structure-set"><code class="function">gst_structure_set()</code></a> directly</p>
</div>
<p>
Do not use anymore.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><a name="GST-AUDIO-FIELD-RATE:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FIELD_RATE</code></span></p></td>
<td>add rate field to caps
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FIELD-CHANNELS:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FIELD_CHANNELS</code></span></p></td>
<td>add channels field to caps
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FIELD-ENDIANNESS:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FIELD_ENDIANNESS</code></span></p></td>
<td>add endianness field to caps
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FIELD-WIDTH:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FIELD_WIDTH</code></span></p></td>
<td>add width field to caps
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FIELD-DEPTH:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FIELD_DEPTH</code></span></p></td>
<td>add depth field to caps
</td>
</tr>
<tr>
<td><p><a name="GST-AUDIO-FIELD-SIGNED:CAPS"></a><span class="term"><code class="literal">GST_AUDIO_FIELD_SIGNED</code></span></p></td>
<td>add signed field to caps
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GST-FRAMES-TO-CLOCK-TIME:CAPS"></a><h3>GST_FRAMES_TO_CLOCK_TIME()</h3>
<pre class="programlisting">#define             GST_FRAMES_TO_CLOCK_TIME(frames, rate)</pre>
<p>
Calculate clocktime from sample <em class="parameter"><code>frames</code></em> and <em class="parameter"><code>rate</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>frames</code></em> :</span></p></td>
<td>sample frames</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>rate</code></em> :</span></p></td>
<td>sampling rate</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GST-CLOCK-TIME-TO-FRAMES:CAPS"></a><h3>GST_CLOCK_TIME_TO_FRAMES()</h3>
<pre class="programlisting">#define             GST_CLOCK_TIME_TO_FRAMES(clocktime, rate)</pre>
<p>
Calculate frames from <em class="parameter"><code>clocktime</code></em> and sample <em class="parameter"><code>rate</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>clocktime</code></em> :</span></p></td>
<td>clock time</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>rate</code></em> :</span></p></td>
<td>sampling rate</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-DEF-RATE:CAPS"></a><h3>GST_AUDIO_DEF_RATE</h3>
<pre class="programlisting">#define GST_AUDIO_DEF_RATE 44100
</pre>
<p>
Standard sampling rate used in consumer audio.
</p>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-FLOAT-PAD-TEMPLATE-CAPS"></a><h3>GST_AUDIO_FLOAT_PAD_TEMPLATE_CAPS</h3>
<pre class="programlisting">#define             GST_AUDIO_FLOAT_PAD_TEMPLATE_CAPS</pre>
<p>
Template caps for float audio. Can be used when defining a 
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstPadTemplate.html#GstStaticPadTemplate"><span class="type">GstStaticPadTemplate</span></a>
</p>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-FLOAT-STANDARD-PAD-TEMPLATE-CAPS"></a><h3>GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_CAPS</h3>
<pre class="programlisting">#define             GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_CAPS</pre>
<p>
Template caps for 32bit float mono audio in native byte-order.
Can be used when defining a <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstPadTemplate.html#GstStaticPadTemplate"><span class="type">GstStaticPadTemplate</span></a>
</p>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-INT-PAD-TEMPLATE-CAPS"></a><h3>GST_AUDIO_INT_PAD_TEMPLATE_CAPS</h3>
<pre class="programlisting">#define             GST_AUDIO_INT_PAD_TEMPLATE_CAPS</pre>
<p>
Template caps for integer audio. Can be used when defining a 
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstPadTemplate.html#GstStaticPadTemplate"><span class="type">GstStaticPadTemplate</span></a>
</p>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-INT-STANDARD-PAD-TEMPLATE-CAPS"></a><h3>GST_AUDIO_INT_STANDARD_PAD_TEMPLATE_CAPS</h3>
<pre class="programlisting">#define             GST_AUDIO_INT_STANDARD_PAD_TEMPLATE_CAPS</pre>
<p>
Template caps for 16bit integer stereo audio in native byte-order.
Can be used when defining a <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstPadTemplate.html#GstStaticPadTemplate"><span class="type">GstStaticPadTemplate</span></a>
</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-frame-byte-size"></a><h3>gst_audio_frame_byte_size ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 gst_audio_frame_byte_size           (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstPad.html"><span class="type">GstPad</span></a> *pad</code></em>);</pre>
<p>
Calculate byte size of an audio frame.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>the <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstPad.html"><span class="type">GstPad</span></a> to get the caps from</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the byte size, or 0 if there was an error</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-frame-length"></a><h3>gst_audio_frame_length ()</h3>
<pre class="programlisting"><span class="returnvalue">long</span>                gst_audio_frame_length              (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstPad.html"><span class="type">GstPad</span></a> *pad</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buf</code></em>);</pre>
<p>
Calculate length of buffer in frames.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>the <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstPad.html"><span class="type">GstPad</span></a> to get the caps from</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>buf</code></em> :</span></p></td>
<td>the <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>0 if there's an error, or the number of frames if everything's ok</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-duration-from-pad-buffer"></a><h3>gst_audio_duration_from_pad_buffer ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstClock.html#GstClockTime"><span class="returnvalue">GstClockTime</span></a>        gst_audio_duration_from_pad_buffer  (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstPad.html"><span class="type">GstPad</span></a> *pad</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buf</code></em>);</pre>
<p>
Calculate length in nanoseconds of audio buffer <em class="parameter"><code>buf</code></em> based on capabilities of
<em class="parameter"><code>pad</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>the <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstPad.html"><span class="type">GstPad</span></a> to get the caps from</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>buf</code></em> :</span></p></td>
<td>the <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the length.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-is-buffer-framed"></a><h3>gst_audio_is_buffer_framed ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            gst_audio_is_buffer_framed          (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstPad.html"><span class="type">GstPad</span></a> *pad</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buf</code></em>);</pre>
<p>
Check if the buffer size is a whole multiple of the frame size.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>the <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstPad.html"><span class="type">GstPad</span></a> to get the caps from</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>buf</code></em> :</span></p></td>
<td>the <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if buffer size is multiple.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-structure-set-int"></a><h3>gst_audio_structure_set_int ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                gst_audio_structure_set_int         (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstStructure.html#GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>,
                                                         <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFieldFlag" title="enum GstAudioFieldFlag"><span class="type">GstAudioFieldFlag</span></a> flag</code></em>);</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">gst_audio_structure_set_int</code> is deprecated and should not be used in newly-written code. use <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstStructure.html#gst-structure-set"><code class="function">gst_structure_set()</code></a></p>
</div>
<p>
Do not use anymore.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>structure</code></em> :</span></p></td>
<td>a <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstStructure.html#GstStructure"><span class="type">GstStructure</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>flag</code></em> :</span></p></td>
<td>a set of <a class="link" href="gst-plugins-base-libs-gstaudio.html#GstAudioFieldFlag" title="enum GstAudioFieldFlag"><span class="type">GstAudioFieldFlag</span></a>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-buffer-clip"></a><h3>gst_audio_buffer_clip ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBuffer.html#GstBuffer"><span class="returnvalue">GstBuffer</span></a> *         gst_audio_buffer_clip               (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstSegment.html#GstSegment"><span class="type">GstSegment</span></a> *segment</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> rate</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> frame_size</code></em>);</pre>
<p>
Clip the buffer to the given <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstSegment.html#GstSegment"><code class="literal">GstSegment</code></a>.
</p>
<p>
After calling this function the caller does not own a reference to 
<em class="parameter"><code>buffer</code></em> anymore.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td>
<td>The buffer to clip.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>segment</code></em> :</span></p></td>
<td>Segment in <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstFormat.html#GST-FORMAT-TIME:CAPS"><code class="literal">GST_FORMAT_TIME</code></a> or <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstFormat.html#GST-FORMAT-DEFAULT:CAPS"><code class="literal">GST_FORMAT_DEFAULT</code></a> to which the buffer should be clipped.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>rate</code></em> :</span></p></td>
<td>sample rate.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>frame_size</code></em> :</span></p></td>
<td>size of one audio frame in bytes.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the buffer is completely outside the configured segment,
otherwise the clipped buffer is returned.
If the buffer has no timestamp, it is assumed to be inside the segment and
is not clipped</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.14</p>
</div>
</div>
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