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<h2><span class="refentrytitle"><a name="GstCaps.top_of_page"></a>GstCaps</span></h2>
<p>GstCaps — Structure describing sets of media formats</p>
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<div class="refsect1">
<a name="GstCaps.functions"></a><h2>Functions</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#GST-CAPS-REFCOUNT:CAPS" title="GST_CAPS_REFCOUNT()">GST_CAPS_REFCOUNT</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#GST-CAPS-REFCOUNT-VALUE:CAPS" title="GST_CAPS_REFCOUNT_VALUE()">GST_CAPS_REFCOUNT_VALUE</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#GST-CAPS-IS-SIMPLE:CAPS" title="GST_CAPS_IS_SIMPLE()">GST_CAPS_IS_SIMPLE</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#GST-STATIC-CAPS" title="GST_STATIC_CAPS()">GST_STATIC_CAPS</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#GST-CAPS-FLAGS:CAPS" title="GST_CAPS_FLAGS()">GST_CAPS_FLAGS</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#GST-CAPS-FLAG-IS-SET:CAPS" title="GST_CAPS_FLAG_IS_SET()">GST_CAPS_FLAG_IS_SET</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#GST-CAPS-FLAG-SET:CAPS" title="GST_CAPS_FLAG_SET()">GST_CAPS_FLAG_SET</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#GST-CAPS-FLAG-UNSET:CAPS" title="GST_CAPS_FLAG_UNSET()">GST_CAPS_FLAG_UNSET</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="GstCaps.html#GstCapsForeachFunc" title="GstCapsForeachFunc ()">*GstCapsForeachFunc</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="GstCaps.html#GstCapsMapFunc" title="GstCapsMapFunc ()">*GstCapsMapFunc</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="GstCaps.html#GstCapsFilterMapFunc" title="GstCapsFilterMapFunc ()">*GstCapsFilterMapFunc</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-new-empty" title="gst_caps_new_empty ()">gst_caps_new_empty</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-new-empty-simple" title="gst_caps_new_empty_simple ()">gst_caps_new_empty_simple</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-new-any" title="gst_caps_new_any ()">gst_caps_new_any</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-new-simple" title="gst_caps_new_simple ()">gst_caps_new_simple</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-new-full" title="gst_caps_new_full ()">gst_caps_new_full</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-new-full-valist" title="gst_caps_new_full_valist ()">gst_caps_new_full_valist</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-writable" title="gst_caps_is_writable()">gst_caps_is_writable</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-copy" title="gst_caps_copy ()">gst_caps_copy</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-copy-nth" title="gst_caps_copy_nth ()">gst_caps_copy_nth</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-static-caps-get" title="gst_static_caps_get ()">gst_static_caps_get</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-static-caps-cleanup" title="gst_static_caps_cleanup ()">gst_static_caps_cleanup</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-append" title="gst_caps_append ()">gst_caps_append</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-merge" title="gst_caps_merge ()">gst_caps_merge</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-append-structure" title="gst_caps_append_structure ()">gst_caps_append_structure</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-append-structure-full" title="gst_caps_append_structure_full ()">gst_caps_append_structure_full</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-remove-structure" title="gst_caps_remove_structure ()">gst_caps_remove_structure</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstStructure.html" title="GstStructure"><span class="returnvalue">GstStructure</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-steal-structure" title="gst_caps_steal_structure ()">gst_caps_steal_structure</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-merge-structure" title="gst_caps_merge_structure ()">gst_caps_merge_structure</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-merge-structure-full" title="gst_caps_merge_structure_full ()">gst_caps_merge_structure_full</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-get-size" title="gst_caps_get_size ()">gst_caps_get_size</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstStructure.html" title="GstStructure"><span class="returnvalue">GstStructure</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-get-structure" title="gst_caps_get_structure ()">gst_caps_get_structure</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-get-features" title="gst_caps_get_features ()">gst_caps_get_features</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-set-features" title="gst_caps_set_features ()">gst_caps_set_features</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-set-value" title="gst_caps_set_value ()">gst_caps_set_value</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-set-simple" title="gst_caps_set_simple ()">gst_caps_set_simple</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-set-simple-valist" title="gst_caps_set_simple_valist ()">gst_caps_set_simple_valist</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-foreach" title="gst_caps_foreach ()">gst_caps_foreach</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-map-in-place" title="gst_caps_map_in_place ()">gst_caps_map_in_place</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-filter-and-map-in-place" title="gst_caps_filter_and_map_in_place ()">gst_caps_filter_and_map_in_place</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-any" title="gst_caps_is_any ()">gst_caps_is_any</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-empty" title="gst_caps_is_empty ()">gst_caps_is_empty</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-fixed" title="gst_caps_is_fixed ()">gst_caps_is_fixed</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-equal" title="gst_caps_is_equal ()">gst_caps_is_equal</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-equal-fixed" title="gst_caps_is_equal_fixed ()">gst_caps_is_equal_fixed</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-strictly-equal" title="gst_caps_is_strictly_equal ()">gst_caps_is_strictly_equal</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-always-compatible" title="gst_caps_is_always_compatible ()">gst_caps_is_always_compatible</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-subset" title="gst_caps_is_subset ()">gst_caps_is_subset</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-subset-structure" title="gst_caps_is_subset_structure ()">gst_caps_is_subset_structure</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-subset-structure-full" title="gst_caps_is_subset_structure_full ()">gst_caps_is_subset_structure_full</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-can-intersect" title="gst_caps_can_intersect ()">gst_caps_can_intersect</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-intersect" title="gst_caps_intersect ()">gst_caps_intersect</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-intersect-full" title="gst_caps_intersect_full ()">gst_caps_intersect_full</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-normalize" title="gst_caps_normalize ()">gst_caps_normalize</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-simplify" title="gst_caps_simplify ()">gst_caps_simplify</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-replace" title="gst_caps_replace ()">gst_caps_replace</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-take" title="gst_caps_take ()">gst_caps_take</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-to-string" title="gst_caps_to_string ()">gst_caps_to_string</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-from-string" title="gst_caps_from_string ()">gst_caps_from_string</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-subtract" title="gst_caps_subtract ()">gst_caps_subtract</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-make-writable" title="gst_caps_make_writable()">gst_caps_make_writable</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-truncate" title="gst_caps_truncate ()">gst_caps_truncate</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-fixate" title="gst_caps_fixate ()">gst_caps_fixate</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-ref" title="gst_caps_ref ()">gst_caps_ref</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-unref" title="gst_caps_unref ()">gst_caps_unref</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GstCaps.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="GstCaps.html#GstCaps-struct" title="struct GstCaps">GstCaps</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="GstCaps.html#GstStaticCaps" title="struct GstStaticCaps">GstStaticCaps</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="GstCaps.html#GstCapsIntersectMode" title="enum GstCapsIntersectMode">GstCapsIntersectMode</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="GstCaps.html#GstCapsFlags" title="enum GstCapsFlags">GstCapsFlags</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="GstCaps.html#GST-CAPS-ANY:CAPS" title="GST_CAPS_ANY">GST_CAPS_ANY</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="GstCaps.html#GST-CAPS-NONE:CAPS" title="GST_CAPS_NONE">GST_CAPS_NONE</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="GstCaps.html#GST-STATIC-CAPS-ANY:CAPS" title="GST_STATIC_CAPS_ANY">GST_STATIC_CAPS_ANY</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="GstCaps.html#GST-STATIC-CAPS-NONE:CAPS" title="GST_STATIC_CAPS_NONE">GST_STATIC_CAPS_NONE</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GstCaps.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> <a href="https://developer.gnome.org/gobject/unstable/gobject-Boxed-Types.html">GBoxed</a>
<span class="lineart">╰──</span> GstCaps
</pre>
</div>
<div class="refsect1">
<a name="GstCaps.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gst/gst.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="GstCaps.description"></a><h2>Description</h2>
<p>Caps (capabilities) are lightweight refcounted objects describing media types.
They are composed of an array of <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a>.</p>
<p>Caps are exposed on <a class="link" href="GstPadTemplate.html" title="GstPadTemplate"><span class="type">GstPadTemplate</span></a> to describe all possible types a
given pad can handle. They are also stored in the <a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> along with
a description of the <a class="link" href="GstElement.html" title="GstElement"><span class="type">GstElement</span></a>.</p>
<p>Caps are exposed on the element pads using the <a class="link" href="GstPad.html#gst-pad-query-caps" title="gst_pad_query_caps ()"><code class="function">gst_pad_query_caps()</code></a> pad
function. This function describes the possible types that the pad can
handle or produce at runtime.</p>
<p>A <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> can be constructed with the following code fragment:</p>
<div class="informalexample">
<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td class="listing_lines" align="right"><pre>1
2
3
4
5
6
7</pre></td>
<td class="listing_code"><pre class="programlisting">GstCaps <span class="gtkdoc opt">*</span>caps <span class="gtkdoc opt">=</span> <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstCaps.html#gst-caps-new-simple">gst_caps_new_simple</a></span> <span class="gtkdoc opt">(</span><span class="string">&quot;video/x-raw&quot;</span><span class="gtkdoc opt">,</span>
<span class="string">&quot;format&quot;</span><span class="gtkdoc opt">,</span> G_TYPE_STRING<span class="gtkdoc opt">,</span> <span class="string">&quot;I420&quot;</span><span class="gtkdoc opt">,</span>
<span class="string">&quot;framerate&quot;</span><span class="gtkdoc opt">,</span> GST_TYPE_FRACTION<span class="gtkdoc opt">,</span> <span class="number">25</span><span class="gtkdoc opt">,</span> <span class="number">1</span><span class="gtkdoc opt">,</span>
<span class="string">&quot;pixel-aspect-ratio&quot;</span><span class="gtkdoc opt">,</span> GST_TYPE_FRACTION<span class="gtkdoc opt">,</span> <span class="number">1</span><span class="gtkdoc opt">,</span> <span class="number">1</span><span class="gtkdoc opt">,</span>
<span class="string">&quot;width&quot;</span><span class="gtkdoc opt">,</span> G_TYPE_INT<span class="gtkdoc opt">,</span> <span class="number">320</span><span class="gtkdoc opt">,</span>
<span class="string">&quot;height&quot;</span><span class="gtkdoc opt">,</span> G_TYPE_INT<span class="gtkdoc opt">,</span> <span class="number">240</span><span class="gtkdoc opt">,</span>
NULL<span class="gtkdoc opt">);</span></pre></td>
</tr>
</tbody>
</table>
</div>
<p></p>
<p>A <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> is fixed when it has no properties with ranges or lists. Use
<a class="link" href="GstCaps.html#gst-caps-is-fixed" title="gst_caps_is_fixed ()"><code class="function">gst_caps_is_fixed()</code></a> to test for fixed caps. Fixed caps can be used in a
caps event to notify downstream elements of the current media type.</p>
<p>Various methods exist to work with the media types such as subtracting
or intersecting.</p>
<p>Be aware that the current <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> / <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> serialization into string
has limited support for nested <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> / <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> fields. It can only
support one level of nesting. Using more levels will lead to unexpected
behavior when using serialization features, such as <a class="link" href="GstCaps.html#gst-caps-to-string" title="gst_caps_to_string ()"><code class="function">gst_caps_to_string()</code></a> or
<a class="link" href="gstreamer-GstValue.html#gst-value-serialize" title="gst_value_serialize ()"><code class="function">gst_value_serialize()</code></a> and their counterparts.</p>
</div>
<div class="refsect1">
<a name="GstCaps.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="GST-CAPS-REFCOUNT:CAPS"></a><h3>GST_CAPS_REFCOUNT()</h3>
<pre class="programlisting">#define GST_CAPS_REFCOUNT(caps) GST_MINI_OBJECT_REFCOUNT(caps)
</pre>
<p>Get access to the reference count field of the caps</p>
<div class="refsect3">
<a name="id-1.3.11.8.2.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-CAPS-REFCOUNT-VALUE:CAPS"></a><h3>GST_CAPS_REFCOUNT_VALUE()</h3>
<pre class="programlisting">#define GST_CAPS_REFCOUNT_VALUE(caps) GST_MINI_OBJECT_REFCOUNT_VALUE(caps)
</pre>
<p>Get the reference count value of the caps.</p>
<div class="refsect3">
<a name="id-1.3.11.8.3.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-CAPS-IS-SIMPLE:CAPS"></a><h3>GST_CAPS_IS_SIMPLE()</h3>
<pre class="programlisting">#define GST_CAPS_IS_SIMPLE(caps) (gst_caps_get_size(caps) == 1)
</pre>
<p>Convenience macro that checks if the number of structures in the given caps
is exactly one.</p>
<div class="refsect3">
<a name="id-1.3.11.8.4.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> instance to check</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-STATIC-CAPS"></a><h3>GST_STATIC_CAPS()</h3>
<pre class="programlisting">#define GST_STATIC_CAPS(string)</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> static caps from an input string.
This can be used in pad templates.</p>
<div class="refsect3">
<a name="id-1.3.11.8.5.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>string</p></td>
<td class="parameter_description"><p>the string describing the caps</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-CAPS-FLAGS:CAPS"></a><h3>GST_CAPS_FLAGS()</h3>
<pre class="programlisting">#define GST_CAPS_FLAGS(caps) GST_MINI_OBJECT_FLAGS(caps)
</pre>
<p>A flags word containing <a class="link" href="GstCaps.html#GstCapsFlags" title="enum GstCapsFlags"><span class="type">GstCapsFlags</span></a> flags set on this caps.</p>
<div class="refsect3">
<a name="id-1.3.11.8.6.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-CAPS-FLAG-IS-SET:CAPS"></a><h3>GST_CAPS_FLAG_IS_SET()</h3>
<pre class="programlisting">#define GST_CAPS_FLAG_IS_SET(caps,flag) GST_MINI_OBJECT_FLAG_IS_SET (caps, flag)
</pre>
<p>Gives the status of a specific flag on a caps.</p>
<div class="refsect3">
<a name="id-1.3.11.8.7.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flag</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html#GstCapsFlags" title="enum GstCapsFlags"><span class="type">GstCapsFlags</span></a> to check.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-CAPS-FLAG-SET:CAPS"></a><h3>GST_CAPS_FLAG_SET()</h3>
<pre class="programlisting">#define GST_CAPS_FLAG_SET(caps,flag) GST_MINI_OBJECT_FLAG_SET (caps, flag)
</pre>
<p>Sets a caps flag on a caps.</p>
<div class="refsect3">
<a name="id-1.3.11.8.8.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flag</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html#GstCapsFlags" title="enum GstCapsFlags"><span class="type">GstCapsFlags</span></a> to set.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-CAPS-FLAG-UNSET:CAPS"></a><h3>GST_CAPS_FLAG_UNSET()</h3>
<pre class="programlisting">#define GST_CAPS_FLAG_UNSET(caps,flag) GST_MINI_OBJECT_FLAG_UNSET (caps, flag)
</pre>
<p>Clears a caps flag.</p>
<div class="refsect3">
<a name="id-1.3.11.8.9.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flag</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html#GstCapsFlags" title="enum GstCapsFlags"><span class="type">GstCapsFlags</span></a> to clear.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstCapsForeachFunc"></a><h3>GstCapsForeachFunc ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
<span class="c_punctuation">(</span>*GstCapsForeachFunc<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>,
<em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>A function that will be called in <a class="link" href="GstCaps.html#gst-caps-foreach" title="gst_caps_foreach ()"><code class="function">gst_caps_foreach()</code></a>. The function may
not modify <em class="parameter"><code>features</code></em>
or <em class="parameter"><code>structure</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.11.8.10.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>features</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.10.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the foreach operation should continue, <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if
the foreach operation should stop with <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>.</p>
<p></p>
</div>
<p class="since">Since 1.6</p>
</div>
<hr>
<div class="refsect2">
<a name="GstCapsMapFunc"></a><h3>GstCapsMapFunc ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
<span class="c_punctuation">(</span>*GstCapsMapFunc<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>,
<em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>A function that will be called in <a class="link" href="GstCaps.html#gst-caps-map-in-place" title="gst_caps_map_in_place ()"><code class="function">gst_caps_map_in_place()</code></a>. The function
may modify <em class="parameter"><code>features</code></em>
and <em class="parameter"><code>structure</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.11.8.11.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>features</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.11.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the map operation should continue, <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if
the map operation should stop with <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>.</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstCapsFilterMapFunc"></a><h3>GstCapsFilterMapFunc ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
<span class="c_punctuation">(</span>*GstCapsFilterMapFunc<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>,
<em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>A function that will be called in <a class="link" href="GstCaps.html#gst-caps-filter-and-map-in-place" title="gst_caps_filter_and_map_in_place ()"><code class="function">gst_caps_filter_and_map_in_place()</code></a>.
The function may modify <em class="parameter"><code>features</code></em>
and <em class="parameter"><code>structure</code></em>
, and both will be
removed from the caps if <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> is returned.</p>
<div class="refsect3">
<a name="id-1.3.11.8.12.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>features</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.12.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the features and structure should be preserved,
<a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if it should be removed.</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-new-empty"></a><h3>gst_caps_new_empty ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_new_empty (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that is empty. That is, the returned
<a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> contains no media formats.
The <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> is guaranteed to be writable.
Caller is responsible for unreffing the returned caps.</p>
<div class="refsect3">
<a name="id-1.3.11.8.13.5"></a><h4>Returns</h4>
<p> the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-new-empty-simple"></a><h3>gst_caps_new_empty_simple ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_new_empty_simple (<em class="parameter"><code>const <span class="type">char</span> *media_type</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that contains one <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> with name
<em class="parameter"><code>media_type</code></em>
.
Caller is responsible for unreffing the returned caps.</p>
<div class="refsect3">
<a name="id-1.3.11.8.14.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>media_type</p></td>
<td class="parameter_description"><p>the media type of the structure</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.14.6"></a><h4>Returns</h4>
<p> the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-new-any"></a><h3>gst_caps_new_any ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_new_any (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that indicates that it is compatible with
any media format.</p>
<div class="refsect3">
<a name="id-1.3.11.8.15.5"></a><h4>Returns</h4>
<p> the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-new-simple"></a><h3>gst_caps_new_simple ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_new_simple (<em class="parameter"><code>const <span class="type">char</span> *media_type</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *fieldname</code></em>,
<em class="parameter"><code>...</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that contains one <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a>. The
structure is defined by the arguments, which have the same format
as <a class="link" href="GstStructure.html#gst-structure-new" title="gst_structure_new ()"><code class="function">gst_structure_new()</code></a>.
Caller is responsible for unreffing the returned caps.</p>
<div class="refsect3">
<a name="id-1.3.11.8.16.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>media_type</p></td>
<td class="parameter_description"><p>the media type of the structure</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>fieldname</p></td>
<td class="parameter_description"><p>first field to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>...</p></td>
<td class="parameter_description"><p>additional arguments</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.16.6"></a><h4>Returns</h4>
<p> the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-new-full"></a><h3>gst_caps_new_full ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_new_full (<em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *struct1</code></em>,
<em class="parameter"><code>...</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> and adds all the structures listed as
arguments. The list must be <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>-terminated. The structures
are not copied; the returned <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> owns the structures.</p>
<div class="refsect3">
<a name="id-1.3.11.8.17.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>struct1</p></td>
<td class="parameter_description"><p>the first structure to add</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>...</p></td>
<td class="parameter_description"><p>additional structures to add</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.17.6"></a><h4>Returns</h4>
<p> the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-new-full-valist"></a><h3>gst_caps_new_full_valist ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_new_full_valist (<em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>,
<em class="parameter"><code><span class="type">va_list</span> var_args</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> and adds all the structures listed as
arguments. The list must be <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>-terminated. The structures
are not copied; the returned <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> owns the structures.</p>
<div class="refsect3">
<a name="id-1.3.11.8.18.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p>the first structure to add</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>var_args</p></td>
<td class="parameter_description"><p>additional structures to add</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.18.6"></a><h4>Returns</h4>
<p> the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-writable"></a><h3>gst_caps_is_writable()</h3>
<pre class="programlisting">#define gst_caps_is_writable(caps) gst_mini_object_is_writable (GST_MINI_OBJECT_CAST (caps))
</pre>
<p>Tests if you can safely modify <em class="parameter"><code>caps</code></em>
. It is only safe to modify caps when
there is only one owner of the caps - ie, the object is writable.</p>
<div class="refsect3">
<a name="id-1.3.11.8.19.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-copy"></a><h3>gst_caps_copy ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_copy (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> as a copy of the old <em class="parameter"><code>caps</code></em>
. The new caps will have a
refcount of 1, owned by the caller. The structures are copied as well.</p>
<p>Note that this function is the semantic equivalent of a <a class="link" href="GstCaps.html#gst-caps-ref" title="gst_caps_ref ()"><code class="function">gst_caps_ref()</code></a>
followed by a <a class="link" href="GstCaps.html#gst-caps-make-writable" title="gst_caps_make_writable()"><code class="function">gst_caps_make_writable()</code></a>. If you only want to hold on to a
reference to the data, you should use <a class="link" href="GstCaps.html#gst-caps-ref" title="gst_caps_ref ()"><code class="function">gst_caps_ref()</code></a>.</p>
<p>When you are finished with the caps, call <a class="link" href="GstCaps.html#gst-caps-unref" title="gst_caps_unref ()"><code class="function">gst_caps_unref()</code></a> on it.</p>
<div class="refsect3">
<a name="id-1.3.11.8.20.7"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.20.8"></a><h4>Returns</h4>
<p> the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-copy-nth"></a><h3>gst_caps_copy_nth ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_copy_nth (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> nth</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> and appends a copy of the nth structure
contained in <em class="parameter"><code>caps</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.11.8.21.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to copy</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>nth</p></td>
<td class="parameter_description"><p>the nth structure to copy</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.21.6"></a><h4>Returns</h4>
<p> the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-static-caps-get"></a><h3>gst_static_caps_get ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_static_caps_get (<em class="parameter"><code><a class="link" href="GstCaps.html#GstStaticCaps" title="struct GstStaticCaps"><span class="type">GstStaticCaps</span></a> *static_caps</code></em>);</pre>
<p>Converts a <a class="link" href="GstCaps.html#GstStaticCaps" title="struct GstStaticCaps"><span class="type">GstStaticCaps</span></a> to a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p>
<div class="refsect3">
<a name="id-1.3.11.8.22.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>static_caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html#GstStaticCaps" title="struct GstStaticCaps"><span class="type">GstStaticCaps</span></a> to convert</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.22.6"></a><h4>Returns</h4>
<p> a pointer to the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. Unref after usage.
Since the core holds an additional ref to the returned caps,
use <a class="link" href="GstCaps.html#gst-caps-make-writable" title="gst_caps_make_writable()"><code class="function">gst_caps_make_writable()</code></a> on the returned caps to modify it. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-static-caps-cleanup"></a><h3>gst_static_caps_cleanup ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_static_caps_cleanup (<em class="parameter"><code><a class="link" href="GstCaps.html#GstStaticCaps" title="struct GstStaticCaps"><span class="type">GstStaticCaps</span></a> *static_caps</code></em>);</pre>
<p>Clean up the cached caps contained in <em class="parameter"><code>static_caps</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.11.8.23.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>static_caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html#GstStaticCaps" title="struct GstStaticCaps"><span class="type">GstStaticCaps</span></a> to clean</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-append"></a><h3>gst_caps_append ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_append (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps1</code></em>,
<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps2</code></em>);</pre>
<p>Appends the structures contained in <em class="parameter"><code>caps2</code></em>
to <em class="parameter"><code>caps1</code></em>
. The structures in
<em class="parameter"><code>caps2</code></em>
are not copied -- they are transferred to <em class="parameter"><code>caps1</code></em>
, and then <em class="parameter"><code>caps2</code></em>
is
freed. If either caps is ANY, the resulting caps will be ANY.</p>
<div class="refsect3">
<a name="id-1.3.11.8.24.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps1</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that will be appended to</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>caps2</p></td>
<td class="parameter_description"><p> the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to append. </p></td>
<td class="parameter_annotations"><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>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-merge"></a><h3>gst_caps_merge ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_merge (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps1</code></em>,
<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps2</code></em>);</pre>
<p>Appends the structures contained in <em class="parameter"><code>caps2</code></em>
to <em class="parameter"><code>caps1</code></em>
if they are not yet
expressed by <em class="parameter"><code>caps1</code></em>
. The structures in <em class="parameter"><code>caps2</code></em>
are not copied -- they are
transferred to a writable copy of <em class="parameter"><code>caps1</code></em>
, and then <em class="parameter"><code>caps2</code></em>
is freed.
If either caps is ANY, the resulting caps will be ANY.</p>
<div class="refsect3">
<a name="id-1.3.11.8.25.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps1</p></td>
<td class="parameter_description"><p> the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that will take the new entries. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>caps2</p></td>
<td class="parameter_description"><p> the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to merge in. </p></td>
<td class="parameter_annotations"><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>
<div class="refsect3">
<a name="id-1.3.11.8.25.6"></a><h4>Returns</h4>
<p> the merged caps. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-append-structure"></a><h3>gst_caps_append_structure ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_append_structure (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>);</pre>
<p>Appends <em class="parameter"><code>structure</code></em>
to <em class="parameter"><code>caps</code></em>
. The structure is not copied; <em class="parameter"><code>caps</code></em>
becomes the owner of <em class="parameter"><code>structure</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.11.8.26.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that will be appended to</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p> the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> to append. </p></td>
<td class="parameter_annotations"><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>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-append-structure-full"></a><h3>gst_caps_append_structure_full ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_append_structure_full (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>,
<em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>);</pre>
<p>Appends <em class="parameter"><code>structure</code></em>
with <em class="parameter"><code>features</code></em>
to <em class="parameter"><code>caps</code></em>
. The structure is not copied; <em class="parameter"><code>caps</code></em>
becomes the owner of <em class="parameter"><code>structure</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.11.8.27.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that will be appended to</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p> the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> to append. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>features</p></td>
<td class="parameter_description"><p> the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> to append. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 1.2</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-remove-structure"></a><h3>gst_caps_remove_structure ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_remove_structure (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> idx</code></em>);</pre>
<p>removes the structure with the given index from the list of structures
contained in <em class="parameter"><code>caps</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.11.8.28.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to remove from</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>idx</p></td>
<td class="parameter_description"><p>Index of the structure to remove</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-steal-structure"></a><h3>gst_caps_steal_structure ()</h3>
<pre class="programlisting"><a class="link" href="GstStructure.html" title="GstStructure"><span class="returnvalue">GstStructure</span></a> *
gst_caps_steal_structure (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> index</code></em>);</pre>
<p>Retrieves the structure with the given index from the list of structures
contained in <em class="parameter"><code>caps</code></em>
. The caller becomes the owner of the returned structure.</p>
<div class="refsect3">
<a name="id-1.3.11.8.29.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to retrieve from</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>index</p></td>
<td class="parameter_description"><p>Index of the structure to retrieve</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.29.6"></a><h4>Returns</h4>
<p> a pointer to the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> corresponding
to <em class="parameter"><code>index</code></em>
. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-merge-structure"></a><h3>gst_caps_merge_structure ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_merge_structure (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>);</pre>
<p>Appends <em class="parameter"><code>structure</code></em>
to <em class="parameter"><code>caps</code></em>
if its not already expressed by <em class="parameter"><code>caps</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.11.8.30.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p> the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to merge into. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p> the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> to merge. </p></td>
<td class="parameter_annotations"><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>
<div class="refsect3">
<a name="id-1.3.11.8.30.6"></a><h4>Returns</h4>
<p> the merged caps. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-merge-structure-full"></a><h3>gst_caps_merge_structure_full ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_merge_structure_full (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>,
<em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>);</pre>
<p>Appends <em class="parameter"><code>structure</code></em>
with <em class="parameter"><code>features</code></em>
to <em class="parameter"><code>caps</code></em>
if its not already expressed by <em class="parameter"><code>caps</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.11.8.31.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p> the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to merge into. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p> the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> to merge. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>features</p></td>
<td class="parameter_description"><p> the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> to merge. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.31.6"></a><h4>Returns</h4>
<p> the merged caps. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since 1.2</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-get-size"></a><h3>gst_caps_get_size ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
gst_caps_get_size (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>Gets the number of structures contained in <em class="parameter"><code>caps</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.11.8.32.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.32.6"></a><h4>Returns</h4>
<p> the number of structures that <em class="parameter"><code>caps</code></em>
contains</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-get-structure"></a><h3>gst_caps_get_structure ()</h3>
<pre class="programlisting"><a class="link" href="GstStructure.html" title="GstStructure"><span class="returnvalue">GstStructure</span></a> *
gst_caps_get_structure (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> index</code></em>);</pre>
<p>Finds the structure in <em class="parameter"><code>caps</code></em>
that has the index <em class="parameter"><code>index</code></em>
, and
returns it.</p>
<p>WARNING: This function takes a const GstCaps *, but returns a
non-const GstStructure *. This is for programming convenience --
the caller should be aware that structures inside a constant
<a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> should not be modified. However, if you know the caps
are writable, either because you have just copied them or made
them writable with <a class="link" href="GstCaps.html#gst-caps-make-writable" title="gst_caps_make_writable()"><code class="function">gst_caps_make_writable()</code></a>, you may modify the
structure returned in the usual way, e.g. with functions like
<a class="link" href="GstStructure.html#gst-structure-set" title="gst_structure_set ()"><code class="function">gst_structure_set()</code></a>.</p>
<p>You do not need to free or unref the structure returned, it
belongs to the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p>
<div class="refsect3">
<a name="id-1.3.11.8.33.7"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>index</p></td>
<td class="parameter_description"><p>the index of the structure</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.33.8"></a><h4>Returns</h4>
<p> a pointer to the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> corresponding
to <em class="parameter"><code>index</code></em>
. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-get-features"></a><h3>gst_caps_get_features ()</h3>
<pre class="programlisting"><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
gst_caps_get_features (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> index</code></em>);</pre>
<p>Finds the features in <em class="parameter"><code>caps</code></em>
that has the index <em class="parameter"><code>index</code></em>
, and
returns it.</p>
<p>WARNING: This function takes a const GstCaps *, but returns a
non-const GstCapsFeatures *. This is for programming convenience --
the caller should be aware that structures inside a constant
<a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> should not be modified. However, if you know the caps
are writable, either because you have just copied them or made
them writable with <a class="link" href="GstCaps.html#gst-caps-make-writable" title="gst_caps_make_writable()"><code class="function">gst_caps_make_writable()</code></a>, you may modify the
features returned in the usual way, e.g. with functions like
<a class="link" href="GstCapsFeatures.html#gst-caps-features-add" title="gst_caps_features_add ()"><code class="function">gst_caps_features_add()</code></a>.</p>
<p>You do not need to free or unref the structure returned, it
belongs to the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p>
<div class="refsect3">
<a name="id-1.3.11.8.34.7"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>index</p></td>
<td class="parameter_description"><p>the index of the structure</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.34.8"></a><h4>Returns</h4>
<p> a pointer to the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> corresponding
to <em class="parameter"><code>index</code></em>
. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since 1.2</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-set-features"></a><h3>gst_caps_set_features ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_set_features (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> index</code></em>,
<em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>);</pre>
<p>Sets the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> <em class="parameter"><code>features</code></em>
for the structure at <em class="parameter"><code>index</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.11.8.35.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>index</p></td>
<td class="parameter_description"><p>the index of the structure</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>features</p></td>
<td class="parameter_description"><p> the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> to set. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>][<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 1.2</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-set-value"></a><h3>gst_caps_set_value ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_set_value (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *field</code></em>,
<em class="parameter"><code>const <a href="https://developer.gnome.org/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<p>Sets the given <em class="parameter"><code>field</code></em>
on all structures of <em class="parameter"><code>caps</code></em>
to the given <em class="parameter"><code>value</code></em>
.
This is a convenience function for calling <a class="link" href="GstStructure.html#gst-structure-set-value" title="gst_structure_set_value ()"><code class="function">gst_structure_set_value()</code></a> on
all structures of <em class="parameter"><code>caps</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.11.8.36.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a writable caps</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>field</p></td>
<td class="parameter_description"><p>name of the field to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>value</p></td>
<td class="parameter_description"><p>value to set the field to</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-set-simple"></a><h3>gst_caps_set_simple ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_set_simple (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *field</code></em>,
<em class="parameter"><code>...</code></em>);</pre>
<p>Sets fields in a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. The arguments must be passed in the same
manner as <a class="link" href="GstStructure.html#gst-structure-set" title="gst_structure_set ()"><code class="function">gst_structure_set()</code></a>, and be <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>-terminated.</p>
<div class="refsect3">
<a name="id-1.3.11.8.37.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>field</p></td>
<td class="parameter_description"><p>first field to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>...</p></td>
<td class="parameter_description"><p>additional parameters</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-set-simple-valist"></a><h3>gst_caps_set_simple_valist ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_set_simple_valist (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *field</code></em>,
<em class="parameter"><code><span class="type">va_list</span> varargs</code></em>);</pre>
<p>Sets fields in a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. The arguments must be passed in the same
manner as <a class="link" href="GstStructure.html#gst-structure-set" title="gst_structure_set ()"><code class="function">gst_structure_set()</code></a>, and be <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>-terminated.</p>
<div class="refsect3">
<a name="id-1.3.11.8.38.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>field</p></td>
<td class="parameter_description"><p>first field to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>varargs</p></td>
<td class="parameter_description"><p>additional parameters</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-foreach"></a><h3>gst_caps_foreach ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_foreach (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code><a class="link" href="GstCaps.html#GstCapsForeachFunc" title="GstCapsForeachFunc ()"><span class="type">GstCapsForeachFunc</span></a> func</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>Calls the provided function once for each structure and caps feature in the
<a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. The function must not modify the fields.
Also see <a class="link" href="GstCaps.html#gst-caps-map-in-place" title="gst_caps_map_in_place ()"><code class="function">gst_caps_map_in_place()</code></a> and <a class="link" href="GstCaps.html#gst-caps-filter-and-map-in-place" title="gst_caps_filter_and_map_in_place ()"><code class="function">gst_caps_filter_and_map_in_place()</code></a>.</p>
<div class="refsect3">
<a name="id-1.3.11.8.39.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>func</p></td>
<td class="parameter_description"><p> a function to call for each field. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="The callback is valid only during the call to the method."><span class="acronym">scope call</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p> private data. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.39.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the supplied function returns <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> for each call,
<a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</p>
<p></p>
</div>
<p class="since">Since 1.6</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-map-in-place"></a><h3>gst_caps_map_in_place ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_map_in_place (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code><a class="link" href="GstCaps.html#GstCapsMapFunc" title="GstCapsMapFunc ()"><span class="type">GstCapsMapFunc</span></a> func</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>Calls the provided function once for each structure and caps feature in the
<a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. In contrast to <a class="link" href="GstCaps.html#gst-caps-foreach" title="gst_caps_foreach ()"><code class="function">gst_caps_foreach()</code></a>, the function may modify but not
delete the structures and features. The caps must be mutable.</p>
<div class="refsect3">
<a name="id-1.3.11.8.40.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>func</p></td>
<td class="parameter_description"><p> a function to call for each field. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="The callback is valid only during the call to the method."><span class="acronym">scope call</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p> private data. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.40.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the supplied function returns <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> for each call,
<a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</p>
<p></p>
</div>
<p class="since">Since 1.6</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-filter-and-map-in-place"></a><h3>gst_caps_filter_and_map_in_place ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_filter_and_map_in_place (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code><a class="link" href="GstCaps.html#GstCapsFilterMapFunc" title="GstCapsFilterMapFunc ()"><span class="type">GstCapsFilterMapFunc</span></a> func</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>Calls the provided function once for each structure and caps feature in the
<a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. In contrast to <a class="link" href="GstCaps.html#gst-caps-foreach" title="gst_caps_foreach ()"><code class="function">gst_caps_foreach()</code></a>, the function may modify the
structure and features. In contrast to <a class="link" href="GstCaps.html#gst-caps-filter-and-map-in-place" title="gst_caps_filter_and_map_in_place ()"><code class="function">gst_caps_filter_and_map_in_place()</code></a>,
the structure and features are removed from the caps if <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> is returned
from the function.
The caps must be mutable.</p>
<div class="refsect3">
<a name="id-1.3.11.8.41.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>func</p></td>
<td class="parameter_description"><p> a function to call for each field. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="The callback is valid only during the call to the method."><span class="acronym">scope call</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p> private data. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 1.6</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-any"></a><h3>gst_caps_is_any ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_is_any (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>Determines if <em class="parameter"><code>caps</code></em>
represents any media format.</p>
<div class="refsect3">
<a name="id-1.3.11.8.42.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to test</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.42.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>caps</code></em>
represents any format.</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-empty"></a><h3>gst_caps_is_empty ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_is_empty (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>Determines if <em class="parameter"><code>caps</code></em>
represents no media formats.</p>
<div class="refsect3">
<a name="id-1.3.11.8.43.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to test</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.43.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>caps</code></em>
represents no formats.</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-fixed"></a><h3>gst_caps_is_fixed ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_is_fixed (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>Fixed <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> describe exactly one format, that is, they have exactly
one structure, and each field in the structure describes a fixed type.
Examples of non-fixed types are GST_TYPE_INT_RANGE and GST_TYPE_LIST.</p>
<div class="refsect3">
<a name="id-1.3.11.8.44.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to test</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.44.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>caps</code></em>
is fixed</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-equal"></a><h3>gst_caps_is_equal ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_is_equal (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps1</code></em>,
<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps2</code></em>);</pre>
<p>Checks if the given caps represent the same set of caps.</p>
<div class="refsect3">
<a name="id-1.3.11.8.45.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps1</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>caps2</p></td>
<td class="parameter_description"><p>another <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.45.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if both caps are equal.</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-equal-fixed"></a><h3>gst_caps_is_equal_fixed ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_is_equal_fixed (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps1</code></em>,
<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps2</code></em>);</pre>
<p>Tests if two <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> are equal. This function only works on fixed
<a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p>
<div class="refsect3">
<a name="id-1.3.11.8.46.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps1</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to test</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>caps2</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to test</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.11.8.46.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the arguments represent the same format</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-strictly-