diff options
| author | Nicolas Dechesne <n-dechesne@ti.com> | 2011-09-30 00:54:14 +0200 |
|---|---|---|
| committer | Nicolas Dechesne <n-dechesne@ti.com> | 2011-09-30 00:54:14 +0200 |
| commit | beb43201c942afa12dfc4225218b61fcd6e90923 (patch) | |
| tree | a1d85bac4a9ad32ed087d08ecd99ac3c03b9aa0a /docs/gst/html/gstreamer-GstValue.html | |
Imported Upstream version 0.11.1upstream/0.11.1
Diffstat (limited to 'docs/gst/html/gstreamer-GstValue.html')
| -rw-r--r-- | docs/gst/html/gstreamer-GstValue.html | 2350 |
1 files changed, 2350 insertions, 0 deletions
diff --git a/docs/gst/html/gstreamer-GstValue.html b/docs/gst/html/gstreamer-GstValue.html new file mode 100644 index 0000000..da7a121 --- /dev/null +++ b/docs/gst/html/gstreamer-GstValue.html @@ -0,0 +1,2350 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> +<title>GstValue</title> +<meta name="generator" content="DocBook XSL Stylesheets V1.75.2"> +<link rel="home" href="index.html" title="GStreamer 0.11 Core Reference Manual"> +<link rel="up" href="libgstreamer.html" title="GStreamer Core Library"> +<link rel="prev" href="gstreamer-GstUtils.html" title="GstUtils"> +<link rel="next" href="gstreamer-GstVersion.html" title="GstVersion"> +<meta name="generator" content="GTK-Doc V1.18 (XML mode)"> +<link rel="stylesheet" href="style.css" type="text/css"> +</head> +<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> +<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2"> +<tr valign="middle"> +<td><a accesskey="p" href="gstreamer-GstUtils.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td> +<td><a accesskey="u" href="libgstreamer.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td> +<td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td> +<th width="100%" align="center">GStreamer 0.11 Core Reference Manual</th> +<td><a accesskey="n" href="gstreamer-GstVersion.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td> +</tr> +<tr><td colspan="5" class="shortcuts"> +<a href="#gstreamer-GstValue.synopsis" class="shortcut">Top</a> + | + <a href="#gstreamer-GstValue.description" class="shortcut">Description</a> +</td></tr> +</table> +<div class="refentry"> +<a name="gstreamer-GstValue"></a><div class="titlepage"></div> +<div class="refnamediv"><table width="100%"><tr> +<td valign="top"> +<h2><span class="refentrytitle"><a name="gstreamer-GstValue.top_of_page"></a>GstValue</span></h2> +<p>GstValue — GValue implementations specific +to GStreamer</p> +</td> +<td valign="top" align="right"></td> +</tr></table></div> +<div class="refsynopsisdiv"> +<a name="gstreamer-GstValue.synopsis"></a><h2>Synopsis</h2> +<pre class="synopsis"> +#include <gst/gst.h> + +#define <a class="link" href="gstreamer-GstValue.html#GST-MAKE-FOURCC:CAPS" title="GST_MAKE_FOURCC()">GST_MAKE_FOURCC</a> (a, + b, + c, + d) +#define <a class="link" href="gstreamer-GstValue.html#GST-STR-FOURCC:CAPS" title="GST_STR_FOURCC()">GST_STR_FOURCC</a> (f) +#define <a class="link" href="gstreamer-GstValue.html#GST-FOURCC-FORMAT:CAPS" title="GST_FOURCC_FORMAT">GST_FOURCC_FORMAT</a> +#define <a class="link" href="gstreamer-GstValue.html#GST-FOURCC-ARGS:CAPS" title="GST_FOURCC_ARGS()">GST_FOURCC_ARGS</a> (fourcc) + +#define <a class="link" href="gstreamer-GstValue.html#GST-VALUE-HOLDS-INT-RANGE:CAPS" title="GST_VALUE_HOLDS_INT_RANGE()">GST_VALUE_HOLDS_INT_RANGE</a> (x) +#define <a class="link" href="gstreamer-GstValue.html#GST-TYPE-INT-RANGE:CAPS" title="GST_TYPE_INT_RANGE">GST_TYPE_INT_RANGE</a> +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-set-int-range" title="gst_value_set_int_range ()">gst_value_set_int_range</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</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> start</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> end</code></em>); +<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> <a class="link" href="gstreamer-GstValue.html#gst-value-get-int-range-min" title="gst_value_get_int_range_min ()">gst_value_get_int_range_min</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>); +<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> <a class="link" href="gstreamer-GstValue.html#gst-value-get-int-range-max" title="gst_value_get_int_range_max ()">gst_value_get_int_range_max</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>); + +#define <a class="link" href="gstreamer-GstValue.html#GST-VALUE-HOLDS-INT64-RANGE:CAPS" title="GST_VALUE_HOLDS_INT64_RANGE()">GST_VALUE_HOLDS_INT64_RANGE</a> (x) +#define <a class="link" href="gstreamer-GstValue.html#GST-TYPE-INT64-RANGE:CAPS" title="GST_TYPE_INT64_RANGE">GST_TYPE_INT64_RANGE</a> +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-set-int64-range" title="gst_value_set_int64_range ()">gst_value_set_int64_range</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a> start</code></em>, + <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a> end</code></em>); +<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint64"><span class="returnvalue">gint64</span></a> <a class="link" href="gstreamer-GstValue.html#gst-value-get-int64-range-min" title="gst_value_get_int64_range_min ()">gst_value_get_int64_range_min</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>); +<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint64"><span class="returnvalue">gint64</span></a> <a class="link" href="gstreamer-GstValue.html#gst-value-get-int64-range-max" title="gst_value_get_int64_range_max ()">gst_value_get_int64_range_max</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>); + +#define <a class="link" href="gstreamer-GstValue.html#GST-VALUE-HOLDS-DOUBLE-RANGE:CAPS" title="GST_VALUE_HOLDS_DOUBLE_RANGE()">GST_VALUE_HOLDS_DOUBLE_RANGE</a> (x) +#define <a class="link" href="gstreamer-GstValue.html#GST-TYPE-DOUBLE-RANGE:CAPS" title="GST_TYPE_DOUBLE_RANGE">GST_TYPE_DOUBLE_RANGE</a> +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-set-double-range" title="gst_value_set_double_range ()">gst_value_set_double_range</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> start</code></em>, + <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> end</code></em>); +<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="returnvalue">gdouble</span></a> <a class="link" href="gstreamer-GstValue.html#gst-value-get-double-range-min" title="gst_value_get_double_range_min ()">gst_value_get_double_range_min</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>); +<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="returnvalue">gdouble</span></a> <a class="link" href="gstreamer-GstValue.html#gst-value-get-double-range-max" title="gst_value_get_double_range_max ()">gst_value_get_double_range_max</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>); + +#define <a class="link" href="gstreamer-GstValue.html#GST-VALUE-HOLDS-LIST:CAPS" title="GST_VALUE_HOLDS_LIST()">GST_VALUE_HOLDS_LIST</a> (x) +#define <a class="link" href="gstreamer-GstValue.html#GST-TYPE-LIST:CAPS" title="GST_TYPE_LIST">GST_TYPE_LIST</a> +#define <a class="link" href="gstreamer-GstValue.html#GST-VALUE-HOLDS-ARRAY:CAPS" title="GST_VALUE_HOLDS_ARRAY()">GST_VALUE_HOLDS_ARRAY</a> (x) +#define <a class="link" href="gstreamer-GstValue.html#GST-TYPE-ARRAY:CAPS" title="GST_TYPE_ARRAY">GST_TYPE_ARRAY</a> +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-list-append-value" title="gst_value_list_append_value ()">gst_value_list_append_value</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *append_value</code></em>); +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-list-prepend-value" title="gst_value_list_prepend_value ()">gst_value_list_prepend_value</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *prepend_value</code></em>); +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-list-concat" title="gst_value_list_concat ()">gst_value_list_concat</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>); +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-list-merge" title="gst_value_list_merge ()">gst_value_list_merge</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>); +<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a> <a class="link" href="gstreamer-GstValue.html#gst-value-list-get-size" title="gst_value_list_get_size ()">gst_value_list_get_size</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>); +const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * <a class="link" href="gstreamer-GstValue.html#gst-value-list-get-value" title="gst_value_list_get_value ()">gst_value_list_get_value</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</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> index</code></em>); + +#define <a class="link" href="gstreamer-GstValue.html#GST-VALUE-HOLDS-FRACTION:CAPS" title="GST_VALUE_HOLDS_FRACTION()">GST_VALUE_HOLDS_FRACTION</a> (x) +#define <a class="link" href="gstreamer-GstValue.html#GST-TYPE-FRACTION:CAPS" title="GST_TYPE_FRACTION">GST_TYPE_FRACTION</a> +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-set-fraction" title="gst_value_set_fraction ()">gst_value_set_fraction</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</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> numerator</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> denominator</code></em>); +<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> <a class="link" href="gstreamer-GstValue.html#gst-value-get-fraction-numerator" title="gst_value_get_fraction_numerator ()">gst_value_get_fraction_numerator</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>); +<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> <a class="link" href="gstreamer-GstValue.html#gst-value-get-fraction-denominator" title="gst_value_get_fraction_denominator ()">gst_value_get_fraction_denominator</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</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="gstreamer-GstValue.html#gst-value-fraction-multiply" title="gst_value_fraction_multiply ()">gst_value_fraction_multiply</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *product</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *factor1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *factor2</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="gstreamer-GstValue.html#gst-value-fraction-subtract" title="gst_value_fraction_subtract ()">gst_value_fraction_subtract</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *minuend</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *subtrahend</code></em>); + +#define <a class="link" href="gstreamer-GstValue.html#GST-VALUE-HOLDS-FRACTION-RANGE:CAPS" title="GST_VALUE_HOLDS_FRACTION_RANGE()">GST_VALUE_HOLDS_FRACTION_RANGE</a> (x) +#define <a class="link" href="gstreamer-GstValue.html#GST-TYPE-FRACTION-RANGE:CAPS" title="GST_TYPE_FRACTION_RANGE">GST_TYPE_FRACTION_RANGE</a> +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-set-fraction-range" title="gst_value_set_fraction_range ()">gst_value_set_fraction_range</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *start</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *end</code></em>); +const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * <a class="link" href="gstreamer-GstValue.html#gst-value-get-fraction-range-min" title="gst_value_get_fraction_range_min ()">gst_value_get_fraction_range_min</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>); +const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * <a class="link" href="gstreamer-GstValue.html#gst-value-get-fraction-range-max" title="gst_value_get_fraction_range_max ()">gst_value_get_fraction_range_max</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>); +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-set-fraction-range-full" title="gst_value_set_fraction_range_full ()">gst_value_set_fraction_range_full</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</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> numerator_start</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> denominator_start</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> numerator_end</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> denominator_end</code></em>); + +#define <a class="link" href="gstreamer-GstValue.html#GST-VALUE-HOLDS-DATE:CAPS" title="GST_VALUE_HOLDS_DATE()">GST_VALUE_HOLDS_DATE</a> (x) +#define <a class="link" href="gstreamer-GstValue.html#GST-TYPE-DATE:CAPS" title="GST_TYPE_DATE">GST_TYPE_DATE</a> +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-set-date" title="gst_value_set_date ()">gst_value_set_date</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Date-and-Time-Functions.html#GDate"><span class="type">GDate</span></a> *date</code></em>); +const <a href="http://library.gnome.org/devel/glib/unstable/glib-Date-and-Time-Functions.html#GDate"><span class="returnvalue">GDate</span></a> * <a class="link" href="gstreamer-GstValue.html#gst-value-get-date" title="gst_value_get_date ()">gst_value_get_date</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>); + +#define <a class="link" href="gstreamer-GstValue.html#GST-VALUE-HOLDS-DATE-TIME:CAPS" title="GST_VALUE_HOLDS_DATE_TIME()">GST_VALUE_HOLDS_DATE_TIME</a> (x) + +#define <a class="link" href="gstreamer-GstValue.html#GST-VALUE-HOLDS-CAPS" title="GST_VALUE_HOLDS_CAPS()">GST_VALUE_HOLDS_CAPS</a> (x) +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-set-caps" title="gst_value_set_caps ()">gst_value_set_caps</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code>const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>); +const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="returnvalue">GstCaps</span></a> * <a class="link" href="gstreamer-GstValue.html#gst-value-get-caps" title="gst_value_get_caps ()">gst_value_get_caps</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>); + +#define <a class="link" href="gstreamer-GstValue.html#GST-VALUE-HOLDS-STRUCTURE:CAPS" title="GST_VALUE_HOLDS_STRUCTURE()">GST_VALUE_HOLDS_STRUCTURE</a> (x) +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-set-structure" title="gst_value_set_structure ()">gst_value_set_structure</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code>const <a class="link" href="gstreamer-GstStructure.html#GstStructure" title="struct GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>); +const <a class="link" href="gstreamer-GstStructure.html#GstStructure" title="struct GstStructure"><span class="returnvalue">GstStructure</span></a> * <a class="link" href="gstreamer-GstValue.html#gst-value-get-structure" title="gst_value_get_structure ()">gst_value_get_structure</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>); + +#define <a class="link" href="gstreamer-GstValue.html#GST-VALUE-HOLDS-BUFFER:CAPS" title="GST_VALUE_HOLDS_BUFFER()">GST_VALUE_HOLDS_BUFFER</a> (x) +#define <a class="link" href="gstreamer-GstValue.html#gst-value-get-buffer" title="gst_value_get_buffer()">gst_value_get_buffer</a> (v) +#define <a class="link" href="gstreamer-GstValue.html#gst-value-set-buffer" title="gst_value_set_buffer()">gst_value_set_buffer</a> (v, + b) +#define <a class="link" href="gstreamer-GstValue.html#gst-value-take-buffer" title="gst_value_take_buffer()">gst_value_take_buffer</a> (v, + b) + +#define <a class="link" href="gstreamer-GstValue.html#GST-VALUE-LESS-THAN:CAPS" title="GST_VALUE_LESS_THAN">GST_VALUE_LESS_THAN</a> +#define <a class="link" href="gstreamer-GstValue.html#GST-VALUE-EQUAL:CAPS" title="GST_VALUE_EQUAL">GST_VALUE_EQUAL</a> +#define <a class="link" href="gstreamer-GstValue.html#GST-VALUE-GREATER-THAN:CAPS" title="GST_VALUE_GREATER_THAN">GST_VALUE_GREATER_THAN</a> +#define <a class="link" href="gstreamer-GstValue.html#GST-VALUE-UNORDERED:CAPS" title="GST_VALUE_UNORDERED">GST_VALUE_UNORDERED</a> +<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> (<a class="link" href="gstreamer-GstValue.html#GstValueCompareFunc" title="GstValueCompareFunc ()">*GstValueCompareFunc</a>) (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>); +<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * (<a class="link" href="gstreamer-GstValue.html#GstValueSerializeFunc" title="GstValueSerializeFunc ()">*GstValueSerializeFunc</a>) (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</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="gstreamer-GstValue.html#GstValueDeserializeFunc" title="GstValueDeserializeFunc ()">*GstValueDeserializeFunc</a>) (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *s</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="gstreamer-GstValue.html#GstValueUnionFunc" title="GstValueUnionFunc ()">*GstValueUnionFunc</a>) (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</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="gstreamer-GstValue.html#GstValueIntersectFunc" title="GstValueIntersectFunc ()">*GstValueIntersectFunc</a>) (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</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="gstreamer-GstValue.html#GstValueSubtractFunc" title="GstValueSubtractFunc ()">*GstValueSubtractFunc</a>) (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *minuend</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *subtrahend</code></em>); +struct <a class="link" href="gstreamer-GstValue.html#GstValueTable" title="struct GstValueTable">GstValueTable</a>; +<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="gstreamer-GstValue.html#gst-value-is-fixed" title="gst_value_is_fixed ()">gst_value_is_fixed</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>); +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-register" title="gst_value_register ()">gst_value_register</a> (<em class="parameter"><code>const <a class="link" href="gstreamer-GstValue.html#GstValueTable" title="struct GstValueTable"><span class="type">GstValueTable</span></a> *table</code></em>); +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-init-and-copy" title="gst_value_init_and_copy ()">gst_value_init_and_copy</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *src</code></em>); +<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * <a class="link" href="gstreamer-GstValue.html#gst-value-serialize" title="gst_value_serialize ()">gst_value_serialize</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</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="gstreamer-GstValue.html#gst-value-deserialize" title="gst_value_deserialize ()">gst_value_deserialize</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *src</code></em>); +<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> <a class="link" href="gstreamer-GstValue.html#gst-value-compare" title="gst_value_compare ()">gst_value_compare</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</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="gstreamer-GstValue.html#gst-value-can-compare" title="gst_value_can_compare ()">gst_value_can_compare</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</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="gstreamer-GstValue.html#gst-value-union" title="gst_value_union ()">gst_value_union</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</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="gstreamer-GstValue.html#gst-value-can-union" title="gst_value_can_union ()">gst_value_can_union</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>); +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-register-union-func" title="gst_value_register_union_func ()">gst_value_register_union_func</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type1</code></em>, + <em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type2</code></em>, + <em class="parameter"><code><a class="link" href="gstreamer-GstValue.html#GstValueUnionFunc" title="GstValueUnionFunc ()"><span class="type">GstValueUnionFunc</span></a> func</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="gstreamer-GstValue.html#gst-value-subtract" title="gst_value_subtract ()">gst_value_subtract</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *minuend</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *subtrahend</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="gstreamer-GstValue.html#gst-value-can-subtract" title="gst_value_can_subtract ()">gst_value_can_subtract</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *minuend</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *subtrahend</code></em>); +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-register-subtract-func" title="gst_value_register_subtract_func ()">gst_value_register_subtract_func</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> minuend_type</code></em>, + <em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> subtrahend_type</code></em>, + <em class="parameter"><code><a class="link" href="gstreamer-GstValue.html#GstValueSubtractFunc" title="GstValueSubtractFunc ()"><span class="type">GstValueSubtractFunc</span></a> func</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="gstreamer-GstValue.html#gst-value-intersect" title="gst_value_intersect ()">gst_value_intersect</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</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="gstreamer-GstValue.html#gst-value-can-intersect" title="gst_value_can_intersect ()">gst_value_can_intersect</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>); +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-register-intersect-func" title="gst_value_register_intersect_func ()">gst_value_register_intersect_func</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type1</code></em>, + <em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type2</code></em>, + <em class="parameter"><code><a class="link" href="gstreamer-GstValue.html#GstValueIntersectFunc" title="GstValueIntersectFunc ()"><span class="type">GstValueIntersectFunc</span></a> func</code></em>); +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-array-append-value" title="gst_value_array_append_value ()">gst_value_array_append_value</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *append_value</code></em>); +<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a> <a class="link" href="gstreamer-GstValue.html#gst-value-array-get-size" title="gst_value_array_get_size ()">gst_value_array_get_size</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>); +const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * <a class="link" href="gstreamer-GstValue.html#gst-value-array-get-value" title="gst_value_array_get_value ()">gst_value_array_get_value</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</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> index</code></em>); +<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstValue.html#gst-value-array-prepend-value" title="gst_value_array_prepend_value ()">gst_value_array_prepend_value</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *prepend_value</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="gstreamer-GstValue.html#gst-value-fixate" title="gst_value_fixate ()">gst_value_fixate</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *src</code></em>); +</pre> +</div> +<div class="refsect1"> +<a name="gstreamer-GstValue.description"></a><h2>Description</h2> +<p> +GValue implementations specific to GStreamer. +</p> +<p> +Note that operations on the same <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> from multiple threads may lead to +undefined behaviour. +</p> +<p> +Last reviewed on 2008-03-11 (0.10.18) +</p> +</div> +<div class="refsect1"> +<a name="gstreamer-GstValue.details"></a><h2>Details</h2> +<div class="refsect2"> +<a name="GST-MAKE-FOURCC:CAPS"></a><h3>GST_MAKE_FOURCC()</h3> +<pre class="programlisting">#define GST_MAKE_FOURCC(a,b,c,d) ((guint32)((a)|(b)<<8|(c)<<16|(d)<<24)) +</pre> +<p> +Transform four characters into a <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint32"><span class="type">guint32</span></a> fourcc value with host +endianness. +</p> +<div class="informalexample"><pre class="programlisting"> +guint32 fourcc = GST_MAKE_FOURCC ('M', 'J', 'P', 'G'); +</pre></div> +<p> +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>a</code></em> :</span></p></td> +<td>the first character</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>b</code></em> :</span></p></td> +<td>the second character</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>c</code></em> :</span></p></td> +<td>the third character</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>d</code></em> :</span></p></td> +<td>the fourth character</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-STR-FOURCC:CAPS"></a><h3>GST_STR_FOURCC()</h3> +<pre class="programlisting">#define GST_STR_FOURCC(f) ((guint32)(((f)[0])|((f)[1]<<8)|((f)[2]<<16)|((f)[3]<<24))) +</pre> +<p> +Transform an input string into a <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint32"><span class="type">guint32</span></a> fourcc value with host +endianness. +Caller is responsible for ensuring the input string consists of at least +four characters. +</p> +<div class="informalexample"><pre class="programlisting"> +guint32 fourcc = GST_STR_FOURCC ("MJPG"); +</pre></div> +<p> +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><em class="parameter"><code>f</code></em> :</span></p></td> +<td>a string with at least four characters</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-FOURCC-FORMAT:CAPS"></a><h3>GST_FOURCC_FORMAT</h3> +<pre class="programlisting">#define GST_FOURCC_FORMAT "c%c%c%c" +</pre> +<p> +Can be used together with <a class="link" href="gstreamer-GstValue.html#GST-FOURCC-ARGS:CAPS" title="GST_FOURCC_ARGS()"><span class="type">GST_FOURCC_ARGS</span></a> to properly output a +<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint32"><span class="type">guint32</span></a> fourcc value in a <code class="function">printf()</code>-style text message. +</p> +<div class="informalexample"><pre class="programlisting"> +printf ("fourcc: %" GST_FOURCC_FORMAT "\n", GST_FOURCC_ARGS (fcc)); +</pre></div> +<p> +</p> +</div> +<hr> +<div class="refsect2"> +<a name="GST-FOURCC-ARGS:CAPS"></a><h3>GST_FOURCC_ARGS()</h3> +<pre class="programlisting">#define GST_FOURCC_ARGS(fourcc)</pre> +<p> +Can be used together with <a class="link" href="gstreamer-GstValue.html#GST-FOURCC-FORMAT:CAPS" title="GST_FOURCC_FORMAT"><span class="type">GST_FOURCC_FORMAT</span></a> to properly output a +<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint32"><span class="type">guint32</span></a> fourcc value in a <code class="function">printf()</code>-style text message. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><em class="parameter"><code>fourcc</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint32"><span class="type">guint32</span></a> fourcc value to output</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-VALUE-HOLDS-INT-RANGE:CAPS"></a><h3>GST_VALUE_HOLDS_INT_RANGE()</h3> +<pre class="programlisting">#define GST_VALUE_HOLDS_INT_RANGE(x) (G_VALUE_HOLDS((x), gst_int_range_get_type ())) +</pre> +<p> +Checks if the given <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> contains a <a class="link" href="gstreamer-GstValue.html#GST-TYPE-INT-RANGE:CAPS" title="GST_TYPE_INT_RANGE"><span class="type">GST_TYPE_INT_RANGE</span></a> value. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to check</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-TYPE-INT-RANGE:CAPS"></a><h3>GST_TYPE_INT_RANGE</h3> +<pre class="programlisting">#define GST_TYPE_INT_RANGE gst_int_range_get_type () +</pre> +<p> +a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> type that represents an integer range +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> of GstIntRange</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-set-int-range"></a><h3>gst_value_set_int_range ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_set_int_range (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</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> start</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> end</code></em>);</pre> +<p> +Sets <em class="parameter"><code>value</code></em> to the range specified by <em class="parameter"><code>start</code></em> and <em class="parameter"><code>end</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>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_INT_RANGE</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>start</code></em> :</span></p></td> +<td>the start of the range</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>end</code></em> :</span></p></td> +<td>the end of the range</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-get-int-range-min"></a><h3>gst_value_get_int_range_min ()</h3> +<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> gst_value_get_int_range_min (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre> +<p> +Gets the minimum of the range specified by <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_INT_RANGE</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the minimum of the range</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-get-int-range-max"></a><h3>gst_value_get_int_range_max ()</h3> +<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> gst_value_get_int_range_max (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre> +<p> +Gets the maximum of the range specified by <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_INT_RANGE</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the maxumum of the range</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-VALUE-HOLDS-INT64-RANGE:CAPS"></a><h3>GST_VALUE_HOLDS_INT64_RANGE()</h3> +<pre class="programlisting">#define GST_VALUE_HOLDS_INT64_RANGE(x) (G_VALUE_HOLDS((x), gst_int64_range_get_type ())) +</pre> +<p> +Checks if the given <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> contains a <a class="link" href="gstreamer-GstValue.html#GST-TYPE-INT64-RANGE:CAPS" title="GST_TYPE_INT64_RANGE"><span class="type">GST_TYPE_INT64_RANGE</span></a> value. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to check</td> +</tr></tbody> +</table></div> +<p class="since">Since 0.10.31</p> +</div> +<hr> +<div class="refsect2"> +<a name="GST-TYPE-INT64-RANGE:CAPS"></a><h3>GST_TYPE_INT64_RANGE</h3> +<pre class="programlisting">#define GST_TYPE_INT64_RANGE gst_int64_range_get_type () +</pre> +<p> +a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> type that represents an <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a> range +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> of GstInt64Range</td> +</tr></tbody> +</table></div> +<p class="since">Since 0.10.31</p> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-set-int64-range"></a><h3>gst_value_set_int64_range ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_set_int64_range (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a> start</code></em>, + <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a> end</code></em>);</pre> +<p> +Sets <em class="parameter"><code>value</code></em> to the range specified by <em class="parameter"><code>start</code></em> and <em class="parameter"><code>end</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>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_INT64_RANGE</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>start</code></em> :</span></p></td> +<td>the start of the range</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>end</code></em> :</span></p></td> +<td>the end of the range</td> +</tr> +</tbody> +</table></div> +<p class="since">Since 0.10.31</p> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-get-int64-range-min"></a><h3>gst_value_get_int64_range_min ()</h3> +<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint64"><span class="returnvalue">gint64</span></a> gst_value_get_int64_range_min (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre> +<p> +Gets the minimum of the range specified by <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_INT64_RANGE</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the minimum of the range</td> +</tr> +</tbody> +</table></div> +<p class="since">Since 0.10.31</p> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-get-int64-range-max"></a><h3>gst_value_get_int64_range_max ()</h3> +<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint64"><span class="returnvalue">gint64</span></a> gst_value_get_int64_range_max (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre> +<p> +Gets the maximum of the range specified by <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_INT64_RANGE</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the maxumum of the range</td> +</tr> +</tbody> +</table></div> +<p class="since">Since 0.10.31</p> +</div> +<hr> +<div class="refsect2"> +<a name="GST-VALUE-HOLDS-DOUBLE-RANGE:CAPS"></a><h3>GST_VALUE_HOLDS_DOUBLE_RANGE()</h3> +<pre class="programlisting">#define GST_VALUE_HOLDS_DOUBLE_RANGE(x) (G_VALUE_HOLDS((x), gst_double_range_get_type ())) +</pre> +<p> +Checks if the given <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> contains a <a class="link" href="gstreamer-GstValue.html#GST-TYPE-DOUBLE-RANGE:CAPS" title="GST_TYPE_DOUBLE_RANGE"><span class="type">GST_TYPE_DOUBLE_RANGE</span></a> value. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to check</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-TYPE-DOUBLE-RANGE:CAPS"></a><h3>GST_TYPE_DOUBLE_RANGE</h3> +<pre class="programlisting">#define GST_TYPE_DOUBLE_RANGE gst_double_range_get_type () +</pre> +<p> +a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> type that represents a floating point range with double precission +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> of GstIntRange</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-set-double-range"></a><h3>gst_value_set_double_range ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_set_double_range (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> start</code></em>, + <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> end</code></em>);</pre> +<p> +Sets <em class="parameter"><code>value</code></em> to the range specified by <em class="parameter"><code>start</code></em> and <em class="parameter"><code>end</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>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_DOUBLE_RANGE</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>start</code></em> :</span></p></td> +<td>the start of the range</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>end</code></em> :</span></p></td> +<td>the end of the range</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-get-double-range-min"></a><h3>gst_value_get_double_range_min ()</h3> +<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="returnvalue">gdouble</span></a> gst_value_get_double_range_min (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre> +<p> +Gets the minimum of the range specified by <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_DOUBLE_RANGE</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the minimum of the range</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-get-double-range-max"></a><h3>gst_value_get_double_range_max ()</h3> +<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="returnvalue">gdouble</span></a> gst_value_get_double_range_max (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre> +<p> +Gets the maximum of the range specified by <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_DOUBLE_RANGE</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the maxumum of the range</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-VALUE-HOLDS-LIST:CAPS"></a><h3>GST_VALUE_HOLDS_LIST()</h3> +<pre class="programlisting">#define GST_VALUE_HOLDS_LIST(x) (G_VALUE_HOLDS((x), gst_value_list_get_type ())) +</pre> +<p> +Checks if the given <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> contains a <a class="link" href="gstreamer-GstValue.html#GST-TYPE-LIST:CAPS" title="GST_TYPE_LIST"><span class="type">GST_TYPE_LIST</span></a> value. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to check</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-TYPE-LIST:CAPS"></a><h3>GST_TYPE_LIST</h3> +<pre class="programlisting">#define GST_TYPE_LIST gst_value_list_get_type () +</pre> +<p> +a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> type that represents an unordered list of <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> values. This +is used for example to express a list of possible values for a field in +a caps structure, like a list of possible sample rates, of which only one +will be chosen in the end. This means that all values in the list are +meaningful on their own. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> of GstValueList (which is not explicitly typed)</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-VALUE-HOLDS-ARRAY:CAPS"></a><h3>GST_VALUE_HOLDS_ARRAY()</h3> +<pre class="programlisting">#define GST_VALUE_HOLDS_ARRAY(x) (G_VALUE_HOLDS((x), gst_value_array_get_type ())) +</pre> +<p> +Checks if the given <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> contains a <a class="link" href="gstreamer-GstValue.html#GST-TYPE-ARRAY:CAPS" title="GST_TYPE_ARRAY"><span class="type">GST_TYPE_ARRAY</span></a> value. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to check</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-TYPE-ARRAY:CAPS"></a><h3>GST_TYPE_ARRAY</h3> +<pre class="programlisting">#define GST_TYPE_ARRAY gst_value_array_get_type () +</pre> +<p> +a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> type that represents an ordered list of <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> values. This is +used to express a set of values that is meaningful only in their specific +combination and order of values. Each value on its own is not particularly +meaningful, only the ordered array in its entirety is meaningful. This is +used for example to express channel layouts for multichannel audio where +each channel needs to be mapped to a position in the room. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> of GstArrayList (which is not explicitly typed)</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-list-append-value"></a><h3>gst_value_list_append_value ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_list_append_value (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *append_value</code></em>);</pre> +<p> +Appends <em class="parameter"><code>append_value</code></em> to the GstValueList in <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> of type <a class="link" href="gstreamer-GstValue.html#GST-TYPE-LIST:CAPS" title="GST_TYPE_LIST"><span class="type">GST_TYPE_LIST</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>append_value</code></em> :</span></p></td> +<td>the value to append</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-list-prepend-value"></a><h3>gst_value_list_prepend_value ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_list_prepend_value (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *prepend_value</code></em>);</pre> +<p> +Prepends <em class="parameter"><code>prepend_value</code></em> to the GstValueList in <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> of type <a class="link" href="gstreamer-GstValue.html#GST-TYPE-LIST:CAPS" title="GST_TYPE_LIST"><span class="type">GST_TYPE_LIST</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>prepend_value</code></em> :</span></p></td> +<td>the value to prepend</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-list-concat"></a><h3>gst_value_list_concat ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_list_concat (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>);</pre> +<p> +Concatenates copies of <em class="parameter"><code>value1</code></em> and <em class="parameter"><code>value2</code></em> into a list. Values that are not +of type <a class="link" href="gstreamer-GstValue.html#GST-TYPE-LIST:CAPS" title="GST_TYPE_LIST"><span class="type">GST_TYPE_LIST</span></a> are treated as if they were lists of length 1. +<em class="parameter"><code>dest</code></em> will be initialized to the type <a class="link" href="gstreamer-GstValue.html#GST-TYPE-LIST:CAPS" title="GST_TYPE_LIST"><span class="type">GST_TYPE_LIST</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>dest</code></em> :</span></p></td> +<td>an uninitialized <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to take the result. <span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym> caller-allocates]</span> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>value1</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>value2</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> +</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-list-merge"></a><h3>gst_value_list_merge ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_list_merge (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>);</pre> +<p> +Merges copies of <em class="parameter"><code>value1</code></em> and <em class="parameter"><code>value2</code></em>. Values that are not +of type <a class="link" href="gstreamer-GstValue.html#GST-TYPE-LIST:CAPS" title="GST_TYPE_LIST"><span class="type">GST_TYPE_LIST</span></a> are treated as if they were lists of length 1. +</p> +<p> +The result will be put into <em class="parameter"><code>dest</code></em> and will either be a list that will not +contain any duplicates, or a non-list type (if <em class="parameter"><code>value1</code></em> and <em class="parameter"><code>value2</code></em> +were equal). +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>dest</code></em> :</span></p></td> +<td>an uninitialized <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to take the result. <span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym> caller-allocates]</span> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>value1</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>value2</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> +</td> +</tr> +</tbody> +</table></div> +<p class="since">Since 0.10.32</p> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-list-get-size"></a><h3>gst_value_list_get_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_value_list_get_size (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre> +<p> +Gets the number of values contained in <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> of type <a class="link" href="gstreamer-GstValue.html#GST-TYPE-LIST:CAPS" title="GST_TYPE_LIST"><span class="type">GST_TYPE_LIST</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the number of values</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-list-get-value"></a><h3>gst_value_list_get_value ()</h3> +<pre class="programlisting">const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * gst_value_list_get_value (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</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> index</code></em>);</pre> +<p> +Gets the value that is a member of the list contained in <em class="parameter"><code>value</code></em> and +has the index <em class="parameter"><code>index</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>value</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> of type <a class="link" href="gstreamer-GstValue.html#GST-TYPE-LIST:CAPS" title="GST_TYPE_LIST"><span class="type">GST_TYPE_LIST</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>index</code></em> :</span></p></td> +<td>index of value to get from the list</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the value at the given index. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span> +</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-VALUE-HOLDS-FRACTION:CAPS"></a><h3>GST_VALUE_HOLDS_FRACTION()</h3> +<pre class="programlisting">#define GST_VALUE_HOLDS_FRACTION(x) (G_VALUE_HOLDS((x), gst_fraction_get_type ())) +</pre> +<p> +Checks if the given <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> contains a <a class="link" href="gstreamer-GstValue.html#GST-TYPE-FRACTION:CAPS" title="GST_TYPE_FRACTION"><span class="type">GST_TYPE_FRACTION</span></a> value. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to check</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-TYPE-FRACTION:CAPS"></a><h3>GST_TYPE_FRACTION</h3> +<pre class="programlisting">#define GST_TYPE_FRACTION gst_fraction_get_type () +</pre> +<p> +a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> type that represents a fraction of an integer numerator over +an integer denominator +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> of GstFraction (which is not explicitly typed)</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-set-fraction"></a><h3>gst_value_set_fraction ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_set_fraction (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</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> numerator</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> denominator</code></em>);</pre> +<p> +Sets <em class="parameter"><code>value</code></em> to the fraction specified by <em class="parameter"><code>numerator</code></em> over <em class="parameter"><code>denominator</code></em>. +The fraction gets reduced to the smallest numerator and denominator, +and if necessary the sign is moved to the numerator. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td> +<td>a GValue initialized to <a class="link" href="gstreamer-GstValue.html#GST-TYPE-FRACTION:CAPS" title="GST_TYPE_FRACTION"><span class="type">GST_TYPE_FRACTION</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>numerator</code></em> :</span></p></td> +<td>the numerator of the fraction</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>denominator</code></em> :</span></p></td> +<td>the denominator of the fraction</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-get-fraction-numerator"></a><h3>gst_value_get_fraction_numerator ()</h3> +<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> gst_value_get_fraction_numerator (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre> +<p> +Gets the numerator of the fraction specified by <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a GValue initialized to <a class="link" href="gstreamer-GstValue.html#GST-TYPE-FRACTION:CAPS" title="GST_TYPE_FRACTION"><span class="type">GST_TYPE_FRACTION</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the numerator of the fraction.</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-get-fraction-denominator"></a><h3>gst_value_get_fraction_denominator ()</h3> +<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> gst_value_get_fraction_denominator (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre> +<p> +Gets the denominator of the fraction specified by <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a GValue initialized to <a class="link" href="gstreamer-GstValue.html#GST-TYPE-FRACTION:CAPS" title="GST_TYPE_FRACTION"><span class="type">GST_TYPE_FRACTION</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the denominator of the fraction.</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-fraction-multiply"></a><h3>gst_value_fraction_multiply ()</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_value_fraction_multiply (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *product</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *factor1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *factor2</code></em>);</pre> +<p> +Multiplies the two <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> items containing a <a class="link" href="gstreamer-GstValue.html#GST-TYPE-FRACTION:CAPS" title="GST_TYPE_FRACTION"><span class="type">GST_TYPE_FRACTION</span></a> and sets +<em class="parameter"><code>product</code></em> to the product of the two fractions. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>product</code></em> :</span></p></td> +<td>a GValue initialized to <a class="link" href="gstreamer-GstValue.html#GST-TYPE-FRACTION:CAPS" title="GST_TYPE_FRACTION"><span class="type">GST_TYPE_FRACTION</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>factor1</code></em> :</span></p></td> +<td>a GValue initialized to <a class="link" href="gstreamer-GstValue.html#GST-TYPE-FRACTION:CAPS" title="GST_TYPE_FRACTION"><span class="type">GST_TYPE_FRACTION</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>factor2</code></em> :</span></p></td> +<td>a GValue initialized to <a class="link" href="gstreamer-GstValue.html#GST-TYPE-FRACTION:CAPS" title="GST_TYPE_FRACTION"><span class="type">GST_TYPE_FRACTION</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>FALSE in case of an error (like integer overflow), TRUE otherwise.</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-fraction-subtract"></a><h3>gst_value_fraction_subtract ()</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_value_fraction_subtract (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *minuend</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *subtrahend</code></em>);</pre> +<p> +Subtracts the <em class="parameter"><code>subtrahend</code></em> from the <em class="parameter"><code>minuend</code></em> and sets <em class="parameter"><code>dest</code></em> to the result. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>dest</code></em> :</span></p></td> +<td>a GValue initialized to <a class="link" href="gstreamer-GstValue.html#GST-TYPE-FRACTION:CAPS" title="GST_TYPE_FRACTION"><span class="type">GST_TYPE_FRACTION</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>minuend</code></em> :</span></p></td> +<td>a GValue initialized to <a class="link" href="gstreamer-GstValue.html#GST-TYPE-FRACTION:CAPS" title="GST_TYPE_FRACTION"><span class="type">GST_TYPE_FRACTION</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>subtrahend</code></em> :</span></p></td> +<td>a GValue initialized to <a class="link" href="gstreamer-GstValue.html#GST-TYPE-FRACTION:CAPS" title="GST_TYPE_FRACTION"><span class="type">GST_TYPE_FRACTION</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>FALSE in case of an error (like integer overflow), TRUE otherwise.</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-VALUE-HOLDS-FRACTION-RANGE:CAPS"></a><h3>GST_VALUE_HOLDS_FRACTION_RANGE()</h3> +<pre class="programlisting">#define GST_VALUE_HOLDS_FRACTION_RANGE(x) (G_VALUE_HOLDS((x), gst_fraction_range_get_type ())) +</pre> +<p> +Checks if the given <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> contains a <a class="link" href="gstreamer-GstValue.html#GST-TYPE-FRACTION-RANGE:CAPS" title="GST_TYPE_FRACTION_RANGE"><span class="type">GST_TYPE_FRACTION_RANGE</span></a> value. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to check</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-TYPE-FRACTION-RANGE:CAPS"></a><h3>GST_TYPE_FRACTION_RANGE</h3> +<pre class="programlisting">#define GST_TYPE_FRACTION_RANGE gst_fraction_range_get_type () +</pre> +<p> +a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> type that represents a GstFraction range +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> of GstFractionRange</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-set-fraction-range"></a><h3>gst_value_set_fraction_range ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_set_fraction_range (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *start</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *end</code></em>);</pre> +<p> +Sets <em class="parameter"><code>value</code></em> to the range specified by <em class="parameter"><code>start</code></em> and <em class="parameter"><code>end</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>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_FRACTION_RANGE</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>start</code></em> :</span></p></td> +<td>the start of the range (a GST_TYPE_FRACTION GValue)</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>end</code></em> :</span></p></td> +<td>the end of the range (a GST_TYPE_FRACTION GValue)</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-get-fraction-range-min"></a><h3>gst_value_get_fraction_range_min ()</h3> +<pre class="programlisting">const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * gst_value_get_fraction_range_min (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre> +<p> +Gets the minimum of the range specified by <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_FRACTION_RANGE</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the minimum of the range</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-get-fraction-range-max"></a><h3>gst_value_get_fraction_range_max ()</h3> +<pre class="programlisting">const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * gst_value_get_fraction_range_max (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre> +<p> +Gets the maximum of the range specified by <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_FRACTION_RANGE</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the maximum of the range</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-set-fraction-range-full"></a><h3>gst_value_set_fraction_range_full ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_set_fraction_range_full (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</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> numerator_start</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> denominator_start</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> numerator_end</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> denominator_end</code></em>);</pre> +<p> +Sets <em class="parameter"><code>value</code></em> to the range specified by <em class="parameter"><code>numerator_start</code></em>/<em class="parameter"><code>denominator_start</code></em> +and <em class="parameter"><code>numerator_end</code></em>/<em class="parameter"><code>denominator_end</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>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_FRACTION_RANGE</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>numerator_start</code></em> :</span></p></td> +<td>the numerator start of the range</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>denominator_start</code></em> :</span></p></td> +<td>the denominator start of the range</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>numerator_end</code></em> :</span></p></td> +<td>the numerator end of the range</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>denominator_end</code></em> :</span></p></td> +<td>the denominator end of the range</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-VALUE-HOLDS-DATE:CAPS"></a><h3>GST_VALUE_HOLDS_DATE()</h3> +<pre class="programlisting">#define GST_VALUE_HOLDS_DATE(x) (G_VALUE_HOLDS((x), gst_date_get_type ())) +</pre> +<p> +Checks if the given <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> contains a <a class="link" href="gstreamer-GstValue.html#GST-TYPE-DATE:CAPS" title="GST_TYPE_DATE"><span class="type">GST_TYPE_DATE</span></a> value. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to check</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-TYPE-DATE:CAPS"></a><h3>GST_TYPE_DATE</h3> +<pre class="programlisting">#define GST_TYPE_DATE gst_date_get_type () +</pre> +<p> +a boxed <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> type for <a href="http://library.gnome.org/devel/glib/unstable/glib-Date-and-Time-Functions.html#GDate"><span class="type">GDate</span></a> that represents a date. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> of GstDate</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-set-date"></a><h3>gst_value_set_date ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_set_date (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Date-and-Time-Functions.html#GDate"><span class="type">GDate</span></a> *date</code></em>);</pre> +<p> +Sets the contents of <em class="parameter"><code>value</code></em> to correspond to <em class="parameter"><code>date</code></em>. The actual +<a href="http://library.gnome.org/devel/glib/unstable/glib-Date-and-Time-Functions.html#GDate"><span class="type">GDate</span></a> structure is copied before it is used. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_DATE</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>date</code></em> :</span></p></td> +<td>the date to set the value to</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-get-date"></a><h3>gst_value_get_date ()</h3> +<pre class="programlisting">const <a href="http://library.gnome.org/devel/glib/unstable/glib-Date-and-Time-Functions.html#GDate"><span class="returnvalue">GDate</span></a> * gst_value_get_date (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre> +<p> +Gets the contents of <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_DATE</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the contents of <em class="parameter"><code>value</code></em>. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span> +</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-VALUE-HOLDS-DATE-TIME:CAPS"></a><h3>GST_VALUE_HOLDS_DATE_TIME()</h3> +<pre class="programlisting">#define GST_VALUE_HOLDS_DATE_TIME(x) (G_VALUE_HOLDS((x), gst_date_time_get_type ())) +</pre> +<p> +Checks if the given <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> contains a <a class="link" href="gstreamer-GstDateTime.html#GST-TYPE-DATE-TIME:CAPS" title="GST_TYPE_DATE_TIME"><span class="type">GST_TYPE_DATE_TIME</span></a> value. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to check</td> +</tr></tbody> +</table></div> +<p class="since">Since 0.10.31</p> +</div> +<hr> +<div class="refsect2"> +<a name="GST-VALUE-HOLDS-CAPS"></a><h3>GST_VALUE_HOLDS_CAPS()</h3> +<pre class="programlisting">#define GST_VALUE_HOLDS_CAPS(x) (G_VALUE_HOLDS((x), GST_TYPE_CAPS)) +</pre> +<p> +Checks if the given <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> contains a <span class="type">GST_TYPE_CAPS</span> value. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to check</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-set-caps"></a><h3>gst_value_set_caps ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_set_caps (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code>const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre> +<p> +Sets the contents of <em class="parameter"><code>value</code></em> to <em class="parameter"><code>caps</code></em>. A reference to the +provided <em class="parameter"><code>caps</code></em> will be taken by the <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_CAPS</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>caps</code></em> :</span></p></td> +<td>the caps to set the value to. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span> +</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-get-caps"></a><h3>gst_value_get_caps ()</h3> +<pre class="programlisting">const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="returnvalue">GstCaps</span></a> * gst_value_get_caps (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre> +<p> +Gets the contents of <em class="parameter"><code>value</code></em>. The reference count of the returned +<a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> will not be modified, therefore the caller must take one +before getting rid of the <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_CAPS</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the contents of <em class="parameter"><code>value</code></em>. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span> +</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GST-VALUE-HOLDS-STRUCTURE:CAPS"></a><h3>GST_VALUE_HOLDS_STRUCTURE()</h3> +<pre class="programlisting">#define GST_VALUE_HOLDS_STRUCTURE(x) (G_VALUE_HOLDS((x), GST_TYPE_STRUCTURE)) +</pre> +<p> +Checks if the given <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> contains a <span class="type">GST_TYPE_STRUCTURE</span> value. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to check</td> +</tr></tbody> +</table></div> +<p class="since">Since 0.10.15</p> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-set-structure"></a><h3>gst_value_set_structure ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_set_structure (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code>const <a class="link" href="gstreamer-GstStructure.html#GstStructure" title="struct GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>);</pre> +<p> +Sets the contents of <em class="parameter"><code>value</code></em> to <em class="parameter"><code>structure</code></em>. The actual +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_STRUCTURE</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>structure</code></em> :</span></p></td> +<td>the structure to set the value to</td> +</tr> +</tbody> +</table></div> +<p class="since">Since 0.10.15</p> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-get-structure"></a><h3>gst_value_get_structure ()</h3> +<pre class="programlisting">const <a class="link" href="gstreamer-GstStructure.html#GstStructure" title="struct GstStructure"><span class="returnvalue">GstStructure</span></a> * gst_value_get_structure (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre> +<p> +Gets the contents of <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a GValue initialized to GST_TYPE_STRUCTURE</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the contents of <em class="parameter"><code>value</code></em>. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span> +</td> +</tr> +</tbody> +</table></div> +<p class="since">Since 0.10.15</p> +</div> +<hr> +<div class="refsect2"> +<a name="GST-VALUE-HOLDS-BUFFER:CAPS"></a><h3>GST_VALUE_HOLDS_BUFFER()</h3> +<pre class="programlisting">#define GST_VALUE_HOLDS_BUFFER(x) (G_VALUE_HOLDS((x), GST_TYPE_BUFFER)) +</pre> +<p> +Checks if the given <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> contains a <span class="type">GST_TYPE_BUFFER</span> value. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to check</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-get-buffer"></a><h3>gst_value_get_buffer()</h3> +<pre class="programlisting">#define gst_value_get_buffer(v) GST_BUFFER_CAST (g_value_get_boxed(v)) +</pre> +<p> +Receives a <a class="link" href="gstreamer-GstBuffer.html#GstBuffer" title="struct GstBuffer"><span class="type">GstBuffer</span></a> as the value of <em class="parameter"><code>v</code></em>. Does not return a reference to +the buffer, so the pointer is only valid for as long as the caller owns +a reference to <em class="parameter"><code>v</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>v</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to query</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>buffer. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span> +</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-set-buffer"></a><h3>gst_value_set_buffer()</h3> +<pre class="programlisting">#define gst_value_set_buffer(v,b) g_value_set_boxed((v),(b)) +</pre> +<p> +Sets <em class="parameter"><code>b</code></em> as the value of <em class="parameter"><code>v</code></em>. Caller retains reference to buffer. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>v</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to receive the data</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>b</code></em> :</span></p></td> +<td>a <a class="link" href="gstreamer-GstBuffer.html#GstBuffer" title="struct GstBuffer"><span class="type">GstBuffer</span></a> to assign to the GstValue. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span> +</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-take-buffer"></a><h3>gst_value_take_buffer()</h3> +<pre class="programlisting">#define gst_value_take_buffer(v,b) g_value_take_boxed(v,(b)) +</pre> +<p> +Sets <em class="parameter"><code>b</code></em> as the value of <em class="parameter"><code>v</code></em>. Caller gives away reference to buffer. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>v</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to receive the data</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>b</code></em> :</span></p></td> +<td>a <a class="link" href="gstreamer-GstBuffer.html#GstBuffer" title="struct GstBuffer"><span class="type">GstBuffer</span></a> to assign to the GstValue. <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> +</div> +<hr> +<div class="refsect2"> +<a name="GST-VALUE-LESS-THAN:CAPS"></a><h3>GST_VALUE_LESS_THAN</h3> +<pre class="programlisting">#define GST_VALUE_LESS_THAN (-1) +</pre> +<p> +Indicates that the first value provided to a comparison function +(<a class="link" href="gstreamer-GstValue.html#gst-value-compare" title="gst_value_compare ()"><code class="function">gst_value_compare()</code></a>) is lesser than the second one. +</p> +</div> +<hr> +<div class="refsect2"> +<a name="GST-VALUE-EQUAL:CAPS"></a><h3>GST_VALUE_EQUAL</h3> +<pre class="programlisting">#define GST_VALUE_EQUAL 0 +</pre> +<p> +Indicates that the first value provided to a comparison function +(<a class="link" href="gstreamer-GstValue.html#gst-value-compare" title="gst_value_compare ()"><code class="function">gst_value_compare()</code></a>) is equal to the second one. +</p> +</div> +<hr> +<div class="refsect2"> +<a name="GST-VALUE-GREATER-THAN:CAPS"></a><h3>GST_VALUE_GREATER_THAN</h3> +<pre class="programlisting">#define GST_VALUE_GREATER_THAN 1 +</pre> +<p> +Indicates that the first value provided to a comparison function +(<a class="link" href="gstreamer-GstValue.html#gst-value-compare" title="gst_value_compare ()"><code class="function">gst_value_compare()</code></a>) is greater than the second one. +</p> +</div> +<hr> +<div class="refsect2"> +<a name="GST-VALUE-UNORDERED:CAPS"></a><h3>GST_VALUE_UNORDERED</h3> +<pre class="programlisting">#define GST_VALUE_UNORDERED 2 +</pre> +<p> +Indicates that the comparison function (<a class="link" href="gstreamer-GstValue.html#gst-value-compare" title="gst_value_compare ()"><code class="function">gst_value_compare()</code></a>) can not +determine a order for the two provided values. +</p> +</div> +<hr> +<div class="refsect2"> +<a name="GstValueCompareFunc"></a><h3>GstValueCompareFunc ()</h3> +<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> (*GstValueCompareFunc) (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>);</pre> +<p> +Used together with <a class="link" href="gstreamer-GstValue.html#gst-value-compare" title="gst_value_compare ()"><code class="function">gst_value_compare()</code></a> to compare <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> items. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>value1</code></em> :</span></p></td> +<td>first value for comparison</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>value2</code></em> :</span></p></td> +<td>second value for comparison</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>one of GST_VALUE_LESS_THAN, GST_VALUE_EQUAL, GST_VALUE_GREATER_THAN +or GST_VALUE_UNORDERED</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GstValueSerializeFunc"></a><h3>GstValueSerializeFunc ()</h3> +<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * (*GstValueSerializeFunc) (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>);</pre> +<p> +Used by <a class="link" href="gstreamer-GstValue.html#gst-value-serialize" title="gst_value_serialize ()"><code class="function">gst_value_serialize()</code></a> to obtain a non-binary form of the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>. +</p> +<p> +Free-function: g_free +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>value1</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the string representation of the value. <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> +</div> +<hr> +<div class="refsect2"> +<a name="GstValueDeserializeFunc"></a><h3>GstValueDeserializeFunc ()</h3> +<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> (*GstValueDeserializeFunc) (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *s</code></em>);</pre> +<p> +Used by <a class="link" href="gstreamer-GstValue.html#gst-value-deserialize" title="gst_value_deserialize ()"><code class="function">gst_value_deserialize()</code></a> to parse a non-binary form into the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</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>dest</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>s</code></em> :</span></p></td> +<td>a string</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td> +<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> for success</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GstValueUnionFunc"></a><h3>GstValueUnionFunc ()</h3> +<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> (*GstValueUnionFunc) (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>);</pre> +<p> +Used by <a class="link" href="gstreamer-GstValue.html#gst-value-union" title="gst_value_union ()"><code class="function">gst_value_union()</code></a> to perform unification for a specific <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> +type. Register a new implementation with <a class="link" href="gstreamer-GstValue.html#gst-value-register-union-func" title="gst_value_register_union_func ()"><code class="function">gst_value_register_union_func()</code></a>. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>dest</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> for the result</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>value1</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> operand</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>value2</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> operand</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td> +<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if a union was successful</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GstValueIntersectFunc"></a><h3>GstValueIntersectFunc ()</h3> +<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> (*GstValueIntersectFunc) (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>);</pre> +<p> +Used by <a class="link" href="gstreamer-GstValue.html#gst-value-intersect" title="gst_value_intersect ()"><code class="function">gst_value_intersect()</code></a> to perform intersection for a specific <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> +type. If the intersection is non-empty, the result is +placed in <em class="parameter"><code>dest</code></em> and TRUE is returned. If the intersection is +empty, <em class="parameter"><code>dest</code></em> is unmodified and FALSE is returned. +Register a new implementation with <a class="link" href="gstreamer-GstValue.html#gst-value-register-intersect-func" title="gst_value_register_intersect_func ()"><code class="function">gst_value_register_intersect_func()</code></a>. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>dest</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> for the result. <span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym> caller-allocates]</span> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>value1</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> operand</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>value2</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> operand</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td> +<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the values can intersect</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GstValueSubtractFunc"></a><h3>GstValueSubtractFunc ()</h3> +<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> (*GstValueSubtractFunc) (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *minuend</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *subtrahend</code></em>);</pre> +<p> +Used by <a class="link" href="gstreamer-GstValue.html#gst-value-subtract" title="gst_value_subtract ()"><code class="function">gst_value_subtract()</code></a> to perform subtraction for a specific <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> +type. Register a new implementation with <a class="link" href="gstreamer-GstValue.html#gst-value-register-subtract-func" title="gst_value_register_subtract_func ()"><code class="function">gst_value_register_subtract_func()</code></a>. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>dest</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> for the result. <span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym> caller-allocates]</span> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>minuend</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> operand</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>subtrahend</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> operand</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td> +<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the subtraction is not empty</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="GstValueTable"></a><h3>struct GstValueTable</h3> +<pre class="programlisting">struct GstValueTable { + GType type; + GstValueCompareFunc compare; + GstValueSerializeFunc serialize; + GstValueDeserializeFunc deserialize; +}; +</pre> +<p> +VTable for the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> <em class="parameter"><code>type</code></em>. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> <em class="structfield"><code><a name="GstValueTable.type"></a>type</code></em>;</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><a class="link" href="gstreamer-GstValue.html#GstValueCompareFunc" title="GstValueCompareFunc ()"><span class="type">GstValueCompareFunc</span></a> <em class="structfield"><code><a name="GstValueTable.compare"></a>compare</code></em>;</span></p></td> +<td>a <a class="link" href="gstreamer-GstValue.html#GstValueCompareFunc" title="GstValueCompareFunc ()"><span class="type">GstValueCompareFunc</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><a class="link" href="gstreamer-GstValue.html#GstValueSerializeFunc" title="GstValueSerializeFunc ()"><span class="type">GstValueSerializeFunc</span></a> <em class="structfield"><code><a name="GstValueTable.serialize"></a>serialize</code></em>;</span></p></td> +<td>a <a class="link" href="gstreamer-GstValue.html#GstValueSerializeFunc" title="GstValueSerializeFunc ()"><span class="type">GstValueSerializeFunc</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><a class="link" href="gstreamer-GstValue.html#GstValueDeserializeFunc" title="GstValueDeserializeFunc ()"><span class="type">GstValueDeserializeFunc</span></a> <em class="structfield"><code><a name="GstValueTable.deserialize"></a>deserialize</code></em>;</span></p></td> +<td>a <a class="link" href="gstreamer-GstValue.html#GstValueDeserializeFunc" title="GstValueDeserializeFunc ()"><span class="type">GstValueDeserializeFunc</span></a> +</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-is-fixed"></a><h3>gst_value_is_fixed ()</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_value_is_fixed (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre> +<p> +Tests if the given GValue, if available in a GstStructure (or any other +container) contains a "fixed" (which means: one value) or an "unfixed" +(which means: multiple possible values, such as data lists or data +ranges) value. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to check</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>true if the value is "fixed".</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-register"></a><h3>gst_value_register ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_register (<em class="parameter"><code>const <a class="link" href="gstreamer-GstValue.html#GstValueTable" title="struct GstValueTable"><span class="type">GstValueTable</span></a> *table</code></em>);</pre> +<p> +Registers functions to perform calculations on <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> items of a given +type. Each type can only be added once. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody><tr> +<td><p><span class="term"><em class="parameter"><code>table</code></em> :</span></p></td> +<td>structure containing functions to register</td> +</tr></tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-init-and-copy"></a><h3>gst_value_init_and_copy ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_init_and_copy (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *src</code></em>);</pre> +<p> +Initialises the target value to be of the same type as source and then copies +the contents from source to target. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>dest</code></em> :</span></p></td> +<td>the target value. <span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym> caller-allocates]</span> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>src</code></em> :</span></p></td> +<td>the source value</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-serialize"></a><h3>gst_value_serialize ()</h3> +<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * gst_value_serialize (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre> +<p> +tries to transform the given <em class="parameter"><code>value</code></em> into a string representation that allows +getting back this string later on using <a class="link" href="gstreamer-GstValue.html#gst-value-deserialize" title="gst_value_deserialize ()"><code class="function">gst_value_deserialize()</code></a>. +</p> +<p> +Free-function: g_free +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to serialize</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the serialization for <em class="parameter"><code>value</code></em> or NULL if none exists. <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> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-deserialize"></a><h3>gst_value_deserialize ()</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_value_deserialize (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *src</code></em>);</pre> +<p> +Tries to deserialize a string into the type specified by the given GValue. +If the operation succeeds, TRUE is returned, FALSE otherwise. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>dest</code></em> :</span></p></td> +<td> +<a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to fill with contents of +deserialization. <span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym> caller-allocates]</span> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>src</code></em> :</span></p></td> +<td>string to deserialize</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>TRUE on success</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-compare"></a><h3>gst_value_compare ()</h3> +<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> gst_value_compare (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>);</pre> +<p> +Compares <em class="parameter"><code>value1</code></em> and <em class="parameter"><code>value2</code></em>. If <em class="parameter"><code>value1</code></em> and <em class="parameter"><code>value2</code></em> cannot be +compared, the function returns GST_VALUE_UNORDERED. Otherwise, +if <em class="parameter"><code>value1</code></em> is greater than <em class="parameter"><code>value2</code></em>, GST_VALUE_GREATER_THAN is returned. +If <em class="parameter"><code>value1</code></em> is less than <em class="parameter"><code>value2</code></em>, GST_VALUE_LESS_THAN is returned. +If the values are equal, GST_VALUE_EQUAL is returned. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>value1</code></em> :</span></p></td> +<td>a value to compare</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>value2</code></em> :</span></p></td> +<td>another value to compare</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>comparison result</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-can-compare"></a><h3>gst_value_can_compare ()</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_value_can_compare (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>);</pre> +<p> +Determines if <em class="parameter"><code>value1</code></em> and <em class="parameter"><code>value2</code></em> can be compared. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>value1</code></em> :</span></p></td> +<td>a value to compare</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>value2</code></em> :</span></p></td> +<td>another value to compare</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>TRUE if the values can be compared</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-union"></a><h3>gst_value_union ()</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_value_union (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>);</pre> +<p> +Creates a GValue corresponding to the union of <em class="parameter"><code>value1</code></em> and <em class="parameter"><code>value2</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>dest</code></em> :</span></p></td> +<td>the destination value. <span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym> caller-allocates]</span> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>value1</code></em> :</span></p></td> +<td>a value to union</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>value2</code></em> :</span></p></td> +<td>another value to union</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>always returns <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> +</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-can-union"></a><h3>gst_value_can_union ()</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_value_can_union (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>);</pre> +<p> +Determines if <em class="parameter"><code>value1</code></em> and <em class="parameter"><code>value2</code></em> can be non-trivially unioned. +Any two values can be trivially unioned by adding both of them +to a GstValueList. However, certain types have the possibility +to be unioned in a simpler way. For example, an integer range +and an integer can be unioned if the integer is a subset of the +integer range. If there is the possibility that two values can +be unioned, this function returns TRUE. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>value1</code></em> :</span></p></td> +<td>a value to union</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>value2</code></em> :</span></p></td> +<td>another value to union</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>TRUE if there is a function allowing the two values to +be unioned.</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-register-union-func"></a><h3>gst_value_register_union_func ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_register_union_func (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type1</code></em>, + <em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type2</code></em>, + <em class="parameter"><code><a class="link" href="gstreamer-GstValue.html#GstValueUnionFunc" title="GstValueUnionFunc ()"><span class="type">GstValueUnionFunc</span></a> func</code></em>);</pre> +<p> +Registers a union function that can create a union between <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> items +of the type <em class="parameter"><code>type1</code></em> and <em class="parameter"><code>type2</code></em>. +</p> +<p> +Union functions should be registered at startup before any pipelines are +started, as <a class="link" href="gstreamer-GstValue.html#gst-value-register-union-func" title="gst_value_register_union_func ()"><code class="function">gst_value_register_union_func()</code></a> is not thread-safe and cannot +be used at the same time as <a class="link" href="gstreamer-GstValue.html#gst-value-union" title="gst_value_union ()"><code class="function">gst_value_union()</code></a> or <a class="link" href="gstreamer-GstValue.html#gst-value-can-union" title="gst_value_can_union ()"><code class="function">gst_value_can_union()</code></a>. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>type1</code></em> :</span></p></td> +<td>a type to union</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>type2</code></em> :</span></p></td> +<td>another type to union</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>func</code></em> :</span></p></td> +<td>a function that implements creating a union between the two types</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-subtract"></a><h3>gst_value_subtract ()</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_value_subtract (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *minuend</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *subtrahend</code></em>);</pre> +<p> +Subtracts <em class="parameter"><code>subtrahend</code></em> from <em class="parameter"><code>minuend</code></em> and stores the result in <em class="parameter"><code>dest</code></em>. +Note that this means subtraction as in sets, not as in mathematics. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>dest</code></em> :</span></p></td> +<td>the destination value for the result if the +subtraction is not empty. <span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym> caller-allocates]</span> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>minuend</code></em> :</span></p></td> +<td>the value to subtract from</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>subtrahend</code></em> :</span></p></td> +<td>the value to subtract</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td> +<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the subtraction is not empty</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-can-subtract"></a><h3>gst_value_can_subtract ()</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_value_can_subtract (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *minuend</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *subtrahend</code></em>);</pre> +<p> +Checks if it's possible to subtract <em class="parameter"><code>subtrahend</code></em> from <em class="parameter"><code>minuend</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>minuend</code></em> :</span></p></td> +<td>the value to subtract from</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>subtrahend</code></em> :</span></p></td> +<td>the value to subtract</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>TRUE if a subtraction is possible</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-register-subtract-func"></a><h3>gst_value_register_subtract_func ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_register_subtract_func (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> minuend_type</code></em>, + <em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> subtrahend_type</code></em>, + <em class="parameter"><code><a class="link" href="gstreamer-GstValue.html#GstValueSubtractFunc" title="GstValueSubtractFunc ()"><span class="type">GstValueSubtractFunc</span></a> func</code></em>);</pre> +<p> +Registers <em class="parameter"><code>func</code></em> as a function capable of subtracting the values of +<em class="parameter"><code>subtrahend_type</code></em> from values of <em class="parameter"><code>minuend_type</code></em>. +</p> +<p> +Subtract functions should be registered at startup before any pipelines are +started, as <a class="link" href="gstreamer-GstValue.html#gst-value-register-subtract-func" title="gst_value_register_subtract_func ()"><code class="function">gst_value_register_subtract_func()</code></a> is not thread-safe and +cannot be used at the same time as <a class="link" href="gstreamer-GstValue.html#gst-value-subtract" title="gst_value_subtract ()"><code class="function">gst_value_subtract()</code></a>. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>minuend_type</code></em> :</span></p></td> +<td>type of the minuend</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>subtrahend_type</code></em> :</span></p></td> +<td>type of the subtrahend</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>func</code></em> :</span></p></td> +<td>function to use</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-intersect"></a><h3>gst_value_intersect ()</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_value_intersect (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>);</pre> +<p> +Calculates the intersection of two values. If the values have +a non-empty intersection, the value representing the intersection +is placed in <em class="parameter"><code>dest</code></em>. If the intersection is non-empty, <em class="parameter"><code>dest</code></em> is +not modified. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>dest</code></em> :</span></p></td> +<td>a uninitialized <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> that will hold the calculated +intersection value. <span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym> caller-allocates]</span> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>value1</code></em> :</span></p></td> +<td>a value to intersect</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>value2</code></em> :</span></p></td> +<td>another value to intersect</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>TRUE if the intersection is non-empty</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-can-intersect"></a><h3>gst_value_can_intersect ()</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_value_can_intersect (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>);</pre> +<p> +Determines if intersecting two values will produce a valid result. +Two values will produce a valid intersection if they have the same +type, or if there is a method (registered by +<a class="link" href="gstreamer-GstValue.html#gst-value-register-intersect-func" title="gst_value_register_intersect_func ()"><code class="function">gst_value_register_intersect_func()</code></a>) to calculate the intersection. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>value1</code></em> :</span></p></td> +<td>a value to intersect</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>value2</code></em> :</span></p></td> +<td>another value to intersect</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>TRUE if the values can intersect</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-register-intersect-func"></a><h3>gst_value_register_intersect_func ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_register_intersect_func (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type1</code></em>, + <em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type2</code></em>, + <em class="parameter"><code><a class="link" href="gstreamer-GstValue.html#GstValueIntersectFunc" title="GstValueIntersectFunc ()"><span class="type">GstValueIntersectFunc</span></a> func</code></em>);</pre> +<p> +Registers a function that is called to calculate the intersection +of the values having the types <em class="parameter"><code>type1</code></em> and <em class="parameter"><code>type2</code></em>. +</p> +<p> +Intersect functions should be registered at startup before any pipelines are +started, as <a class="link" href="gstreamer-GstValue.html#gst-value-register-intersect-func" title="gst_value_register_intersect_func ()"><code class="function">gst_value_register_intersect_func()</code></a> is not thread-safe and +cannot be used at the same time as <a class="link" href="gstreamer-GstValue.html#gst-value-intersect" title="gst_value_intersect ()"><code class="function">gst_value_intersect()</code></a> or +<a class="link" href="gstreamer-GstValue.html#gst-value-can-intersect" title="gst_value_can_intersect ()"><code class="function">gst_value_can_intersect()</code></a>. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>type1</code></em> :</span></p></td> +<td>the first type to intersect</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>type2</code></em> :</span></p></td> +<td>the second type to intersect</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>func</code></em> :</span></p></td> +<td>the intersection function</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-array-append-value"></a><h3>gst_value_array_append_value ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_array_append_value (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *append_value</code></em>);</pre> +<p> +Appends <em class="parameter"><code>append_value</code></em> to the GstValueArray in <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> of type <a class="link" href="gstreamer-GstValue.html#GST-TYPE-ARRAY:CAPS" title="GST_TYPE_ARRAY"><span class="type">GST_TYPE_ARRAY</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>append_value</code></em> :</span></p></td> +<td>the value to append</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-array-get-size"></a><h3>gst_value_array_get_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_value_array_get_size (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre> +<p> +Gets the number of values contained in <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> of type <a class="link" href="gstreamer-GstValue.html#GST-TYPE-ARRAY:CAPS" title="GST_TYPE_ARRAY"><span class="type">GST_TYPE_ARRAY</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the number of values</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-array-get-value"></a><h3>gst_value_array_get_value ()</h3> +<pre class="programlisting">const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * gst_value_array_get_value (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</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> index</code></em>);</pre> +<p> +Gets the value that is a member of the array contained in <em class="parameter"><code>value</code></em> and +has the index <em class="parameter"><code>index</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>value</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> of type <a class="link" href="gstreamer-GstValue.html#GST-TYPE-ARRAY:CAPS" title="GST_TYPE_ARRAY"><span class="type">GST_TYPE_ARRAY</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>index</code></em> :</span></p></td> +<td>index of value to get from the array</td> +</tr> +<tr> +<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> +<td>the value at the given index. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span> +</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-array-prepend-value"></a><h3>gst_value_array_prepend_value ()</h3> +<pre class="programlisting"><span class="returnvalue">void</span> gst_value_array_prepend_value (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *prepend_value</code></em>);</pre> +<p> +Prepends <em class="parameter"><code>prepend_value</code></em> to the GstValueArray in <em class="parameter"><code>value</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>value</code></em> :</span></p></td> +<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> of type <a class="link" href="gstreamer-GstValue.html#GST-TYPE-ARRAY:CAPS" title="GST_TYPE_ARRAY"><span class="type">GST_TYPE_ARRAY</span></a> +</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>prepend_value</code></em> :</span></p></td> +<td>the value to prepend</td> +</tr> +</tbody> +</table></div> +</div> +<hr> +<div class="refsect2"> +<a name="gst-value-fixate"></a><h3>gst_value_fixate ()</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_value_fixate (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *dest</code></em>, + <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *src</code></em>);</pre> +<p> +Fixate <em class="parameter"><code>src</code></em> into a new value <em class="parameter"><code>dest</code></em>. +For ranges, the first element is taken. For lists and arrays, the +first item is fixated and returned. +If <em class="parameter"><code>src</code></em> is already fixed, this function returns FALSE. +</p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term"><em class="parameter"><code>dest</code></em> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> destination</td> +</tr> +<tr> +<td><p><span class="term"><em class="parameter"><code>src</code></em> :</span></p></td> +<td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to fixate</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>dest</code></em> contains a fixated version of <em class="parameter"><code>src</code></em>.</td> +</tr> +</tbody> +</table></div> +</div> +</div> +</div> +<div class="footer"> +<hr> + Generated by GTK-Doc V1.18</div> +</body> +</html>
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