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| <a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span> |
| <a href="#GstQuery.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> |
| <a href="#GstQuery.object-hierarchy" class="shortcut">Object Hierarchy</a></span> |
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| <div class="refentry"> |
| <a name="GstQuery"></a><div class="titlepage"></div> |
| <div class="refnamediv"><table width="100%"><tr> |
| <td valign="top"> |
| <h2><span class="refentrytitle"><a name="GstQuery.top_of_page"></a>GstQuery</span></h2> |
| <p>GstQuery — Provide functions to create queries, and to set and parse |
| values in them.</p> |
| </td> |
| <td class="gallery_image" valign="top" align="right"></td> |
| </tr></table></div> |
| <div class="refsect1"> |
| <a name="GstQuery.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="GstQuery.html#GST-QUERY-MAKE-TYPE:CAPS" title="GST_QUERY_MAKE_TYPE()">GST_QUERY_MAKE_TYPE</a><span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="define_keyword">#define</td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#GST-QUERY-TYPE:CAPS" title="GST_QUERY_TYPE()">GST_QUERY_TYPE</a><span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="define_keyword">#define</td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#GST-QUERY-TYPE-NAME:CAPS" title="GST_QUERY_TYPE_NAME()">GST_QUERY_TYPE_NAME</a><span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="define_keyword">#define</td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#GST-QUERY-IS-UPSTREAM:CAPS" title="GST_QUERY_IS_UPSTREAM()">GST_QUERY_IS_UPSTREAM</a><span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="define_keyword">#define</td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#GST-QUERY-IS-DOWNSTREAM:CAPS" title="GST_QUERY_IS_DOWNSTREAM()">GST_QUERY_IS_DOWNSTREAM</a><span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="define_keyword">#define</td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#GST-QUERY-IS-SERIALIZED:CAPS" title="GST_QUERY_IS_SERIALIZED()">GST_QUERY_IS_SERIALIZED</a><span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html#GstQueryTypeFlags" title="enum GstQueryTypeFlags"><span class="returnvalue">GstQueryTypeFlags</span></a> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-type-get-flags" title="gst_query_type_get_flags ()">gst_query_type_get_flags</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type">const <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="GstQuery.html#gst-query-type-get-name" title="gst_query_type_get_name ()">gst_query_type_get_name</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a href="https://developer.gnome.org/glib/unstable/glib-Quarks.html#GQuark"><span class="returnvalue">GQuark</span></a> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-type-to-quark" title="gst_query_type_to_quark ()">gst_query_type_to_quark</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-ref" title="gst_query_ref ()">gst_query_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="GstQuery.html#gst-query-unref" title="gst_query_unref ()">gst_query_unref</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-copy" title="gst_query_copy ()">gst_query_copy</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="define_keyword">#define</td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-make-writable" title="gst_query_make_writable()">gst_query_make_writable</a><span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="define_keyword">#define</td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-is-writable" title="gst_query_is_writable()">gst_query_is_writable</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="GstQuery.html#gst-query-replace" title="gst_query_replace ()">gst_query_replace</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="GstQuery.html#gst-query-writable-structure" title="gst_query_writable_structure ()">gst_query_writable_structure</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-new-custom" title="gst_query_new_custom ()">gst_query_new_custom</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type">const <a class="link" href="GstStructure.html" title="GstStructure"><span class="returnvalue">GstStructure</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-get-structure" title="gst_query_get_structure ()">gst_query_get_structure</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-new-convert" title="gst_query_new_convert ()">gst_query_new_convert</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="GstQuery.html#gst-query-set-convert" title="gst_query_set_convert ()">gst_query_set_convert</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="GstQuery.html#gst-query-parse-convert" title="gst_query_parse_convert ()">gst_query_parse_convert</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-new-position" title="gst_query_new_position ()">gst_query_new_position</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="GstQuery.html#gst-query-set-position" title="gst_query_set_position ()">gst_query_set_position</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="GstQuery.html#gst-query-parse-position" title="gst_query_parse_position ()">gst_query_parse_position</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-new-duration" title="gst_query_new_duration ()">gst_query_new_duration</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="GstQuery.html#gst-query-set-duration" title="gst_query_set_duration ()">gst_query_set_duration</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="GstQuery.html#gst-query-parse-duration" title="gst_query_parse_duration ()">gst_query_parse_duration</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-new-latency" title="gst_query_new_latency ()">gst_query_new_latency</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="GstQuery.html#gst-query-parse-latency" title="gst_query_parse_latency ()">gst_query_parse_latency</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="GstQuery.html#gst-query-set-latency" title="gst_query_set_latency ()">gst_query_set_latency</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-new-seeking" title="gst_query_new_seeking ()">gst_query_new_seeking</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="GstQuery.html#gst-query-set-seeking" title="gst_query_set_seeking ()">gst_query_set_seeking</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="GstQuery.html#gst-query-parse-seeking" title="gst_query_parse_seeking ()">gst_query_parse_seeking</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-new-formats" title="gst_query_new_formats ()">gst_query_new_formats</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="GstQuery.html#gst-query-set-formats" title="gst_query_set_formats ()">gst_query_set_formats</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="GstQuery.html#gst-query-set-formatsv" title="gst_query_set_formatsv ()">gst_query_set_formatsv</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="GstQuery.html#gst-query-parse-n-formats" title="gst_query_parse_n_formats ()">gst_query_parse_n_formats</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="GstQuery.html#gst-query-parse-nth-format" title="gst_query_parse_nth_format ()">gst_query_parse_nth_format</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-new-segment" title="gst_query_new_segment ()">gst_query_new_segment</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="GstQuery.html#gst-query-set-segment" title="gst_query_set_segment ()">gst_query_set_segment</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="GstQuery.html#gst-query-parse-segment" title="gst_query_parse_segment ()">gst_query_parse_segment</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-new-caps" title="gst_query_new_caps ()">gst_query_new_caps</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="GstQuery.html#gst-query-parse-caps" title="gst_query_parse_caps ()">gst_query_parse_caps</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="GstQuery.html#gst-query-set-caps-result" title="gst_query_set_caps_result ()">gst_query_set_caps_result</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="GstQuery.html#gst-query-parse-caps-result" title="gst_query_parse_caps_result ()">gst_query_parse_caps_result</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-new-accept-caps" title="gst_query_new_accept_caps ()">gst_query_new_accept_caps</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="GstQuery.html#gst-query-parse-accept-caps" title="gst_query_parse_accept_caps ()">gst_query_parse_accept_caps</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="GstQuery.html#gst-query-set-accept-caps-result" title="gst_query_set_accept_caps_result ()">gst_query_set_accept_caps_result</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="GstQuery.html#gst-query-parse-accept-caps-result" title="gst_query_parse_accept_caps_result ()">gst_query_parse_accept_caps_result</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-new-buffering" title="gst_query_new_buffering ()">gst_query_new_buffering</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="GstQuery.html#gst-query-set-buffering-percent" title="gst_query_set_buffering_percent ()">gst_query_set_buffering_percent</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="GstQuery.html#gst-query-parse-buffering-percent" title="gst_query_parse_buffering_percent ()">gst_query_parse_buffering_percent</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="GstQuery.html#gst-query-set-buffering-stats" title="gst_query_set_buffering_stats ()">gst_query_set_buffering_stats</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="GstQuery.html#gst-query-parse-buffering-stats" title="gst_query_parse_buffering_stats ()">gst_query_parse_buffering_stats</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="GstQuery.html#gst-query-set-buffering-range" title="gst_query_set_buffering_range ()">gst_query_set_buffering_range</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="GstQuery.html#gst-query-parse-buffering-range" title="gst_query_parse_buffering_range ()">gst_query_parse_buffering_range</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="GstQuery.html#gst-query-add-buffering-range" title="gst_query_add_buffering_range ()">gst_query_add_buffering_range</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="GstQuery.html#gst-query-get-n-buffering-ranges" title="gst_query_get_n_buffering_ranges ()">gst_query_get_n_buffering_ranges</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="GstQuery.html#gst-query-parse-nth-buffering-range" title="gst_query_parse_nth_buffering_range ()">gst_query_parse_nth_buffering_range</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-new-uri" title="gst_query_new_uri ()">gst_query_new_uri</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="GstQuery.html#gst-query-parse-uri" title="gst_query_parse_uri ()">gst_query_parse_uri</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="GstQuery.html#gst-query-set-uri" title="gst_query_set_uri ()">gst_query_set_uri</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="GstQuery.html#gst-query-parse-uri-redirection" title="gst_query_parse_uri_redirection ()">gst_query_parse_uri_redirection</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="GstQuery.html#gst-query-set-uri-redirection" title="gst_query_set_uri_redirection ()">gst_query_set_uri_redirection</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="GstQuery.html#gst-query-parse-uri-redirection-permanent" title="gst_query_parse_uri_redirection_permanent ()">gst_query_parse_uri_redirection_permanent</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="GstQuery.html#gst-query-set-uri-redirection-permanent" title="gst_query_set_uri_redirection_permanent ()">gst_query_set_uri_redirection_permanent</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-new-allocation" title="gst_query_new_allocation ()">gst_query_new_allocation</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="GstQuery.html#gst-query-parse-allocation" title="gst_query_parse_allocation ()">gst_query_parse_allocation</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="GstQuery.html#gst-query-add-allocation-pool" title="gst_query_add_allocation_pool ()">gst_query_add_allocation_pool</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="GstQuery.html#gst-query-get-n-allocation-pools" title="gst_query_get_n_allocation_pools ()">gst_query_get_n_allocation_pools</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="GstQuery.html#gst-query-parse-nth-allocation-pool" title="gst_query_parse_nth_allocation_pool ()">gst_query_parse_nth_allocation_pool</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="GstQuery.html#gst-query-set-nth-allocation-pool" title="gst_query_set_nth_allocation_pool ()">gst_query_set_nth_allocation_pool</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="GstQuery.html#gst-query-remove-nth-allocation-pool" title="gst_query_remove_nth_allocation_pool ()">gst_query_remove_nth_allocation_pool</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="GstQuery.html#gst-query-add-allocation-param" title="gst_query_add_allocation_param ()">gst_query_add_allocation_param</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="GstQuery.html#gst-query-get-n-allocation-params" title="gst_query_get_n_allocation_params ()">gst_query_get_n_allocation_params</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="GstQuery.html#gst-query-parse-nth-allocation-param" title="gst_query_parse_nth_allocation_param ()">gst_query_parse_nth_allocation_param</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="GstQuery.html#gst-query-set-nth-allocation-param" title="gst_query_set_nth_allocation_param ()">gst_query_set_nth_allocation_param</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="GstQuery.html#gst-query-remove-nth-allocation-param" title="gst_query_remove_nth_allocation_param ()">gst_query_remove_nth_allocation_param</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="GstQuery.html#gst-query-add-allocation-meta" title="gst_query_add_allocation_meta ()">gst_query_add_allocation_meta</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="GstQuery.html#gst-query-get-n-allocation-metas" title="gst_query_get_n_allocation_metas ()">gst_query_get_n_allocation_metas</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a href="https://developer.gnome.org/gobject/unstable/gobject-Type-Information.html#GType"><span class="returnvalue">GType</span></a> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-parse-nth-allocation-meta" title="gst_query_parse_nth_allocation_meta ()">gst_query_parse_nth_allocation_meta</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="GstQuery.html#gst-query-remove-nth-allocation-meta" title="gst_query_remove_nth_allocation_meta ()">gst_query_remove_nth_allocation_meta</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="GstQuery.html#gst-query-find-allocation-meta" title="gst_query_find_allocation_meta ()">gst_query_find_allocation_meta</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-new-scheduling" title="gst_query_new_scheduling ()">gst_query_new_scheduling</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="GstQuery.html#gst-query-parse-scheduling" title="gst_query_parse_scheduling ()">gst_query_parse_scheduling</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="GstQuery.html#gst-query-set-scheduling" title="gst_query_set_scheduling ()">gst_query_set_scheduling</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="GstQuery.html#gst-query-add-scheduling-mode" title="gst_query_add_scheduling_mode ()">gst_query_add_scheduling_mode</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="GstQuery.html#gst-query-get-n-scheduling-modes" title="gst_query_get_n_scheduling_modes ()">gst_query_get_n_scheduling_modes</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstPad.html#GstPadMode" title="enum GstPadMode"><span class="returnvalue">GstPadMode</span></a> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-parse-nth-scheduling-mode" title="gst_query_parse_nth_scheduling_mode ()">gst_query_parse_nth_scheduling_mode</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="GstQuery.html#gst-query-has-scheduling-mode" title="gst_query_has_scheduling_mode ()">gst_query_has_scheduling_mode</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="GstQuery.html#gst-query-has-scheduling-mode-with-flags" title="gst_query_has_scheduling_mode_with_flags ()">gst_query_has_scheduling_mode_with_flags</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-new-drain" title="gst_query_new_drain ()">gst_query_new_drain</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstQuery.html#gst-query-new-context" title="gst_query_new_context ()">gst_query_new_context</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="GstQuery.html#gst-query-set-context" title="gst_query_set_context ()">gst_query_set_context</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="GstQuery.html#gst-query-parse-context" title="gst_query_parse_context ()">gst_query_parse_context</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="GstQuery.html#gst-query-parse-context-type" title="gst_query_parse_context_type ()">gst_query_parse_context_type</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="GstQuery.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="GstQuery.html#GstQuery-struct" title="struct GstQuery">GstQuery</a></td> |
| </tr> |
| <tr> |
| <td class="datatype_keyword">enum</td> |
| <td class="function_name"><a class="link" href="GstQuery.html#GstQueryTypeFlags" title="enum GstQueryTypeFlags">GstQueryTypeFlags</a></td> |
| </tr> |
| <tr> |
| <td class="define_keyword">#define</td> |
| <td class="function_name"><a class="link" href="GstQuery.html#GST-QUERY-TYPE-BOTH:CAPS" title="GST_QUERY_TYPE_BOTH">GST_QUERY_TYPE_BOTH</a></td> |
| </tr> |
| <tr> |
| <td class="datatype_keyword">enum</td> |
| <td class="function_name"><a class="link" href="GstQuery.html#GstQueryType" title="enum GstQueryType">GstQueryType</a></td> |
| </tr> |
| <tr> |
| <td class="datatype_keyword">enum</td> |
| <td class="function_name"><a class="link" href="GstQuery.html#GstBufferingMode" title="enum GstBufferingMode">GstBufferingMode</a></td> |
| </tr> |
| <tr> |
| <td class="datatype_keyword">enum</td> |
| <td class="function_name"><a class="link" href="GstQuery.html#GstSchedulingFlags" title="enum GstSchedulingFlags">GstSchedulingFlags</a></td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="GstQuery.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> GstQuery |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="GstQuery.includes"></a><h2>Includes</h2> |
| <pre class="synopsis">#include <gst/gst.h> |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="GstQuery.description"></a><h2>Description</h2> |
| <p>Queries can be performed on pads (<a class="link" href="GstPad.html#gst-pad-query" title="gst_pad_query ()"><code class="function">gst_pad_query()</code></a>) and elements |
| (<a class="link" href="GstElement.html#gst-element-query" title="gst_element_query ()"><code class="function">gst_element_query()</code></a>). Please note that some queries might need a running |
| pipeline to work.</p> |
| <p>Queries can be created using the gst_query_new_*() functions. |
| Query values can be set using gst_query_set_*(), and parsed using |
| gst_query_parse_*() helpers.</p> |
| <p>The following example shows how to query the duration of a pipeline:</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 |
| 8 |
| 9 |
| 10 |
| 11 |
| 12</pre></td> |
| <td class="listing_code"><pre class="programlisting">GstQuery <span class="gtkdoc opt">*</span>query<span class="gtkdoc opt">;</span> |
| gboolean res<span class="gtkdoc opt">;</span> |
| query <span class="gtkdoc opt">=</span> <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstQuery.html#gst-query-new-duration">gst_query_new_duration</a></span> <span class="gtkdoc opt">(</span>GST_FORMAT_TIME<span class="gtkdoc opt">);</span> |
| res <span class="gtkdoc opt">=</span> <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html#gst-element-query">gst_element_query</a></span> <span class="gtkdoc opt">(</span>pipeline<span class="gtkdoc opt">,</span> query<span class="gtkdoc opt">);</span> |
| <span class="keyword">if</span> <span class="gtkdoc opt">(</span>res<span class="gtkdoc opt">) {</span> |
| gint64 duration<span class="gtkdoc opt">;</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstQuery.html#gst-query-parse-duration">gst_query_parse_duration</a></span> <span class="gtkdoc opt">(</span>query<span class="gtkdoc opt">,</span> NULL<span class="gtkdoc opt">, &</span>duration<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="https://developer.gnome.org/glib/unstable/glib-Warnings-and-Assertions.html#g-print">g_print</a></span> <span class="gtkdoc opt">(</span><span class="string">"duration = %"</span>GST_TIME_FORMAT<span class="gtkdoc opt">,</span> <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-TIME-ARGS:CAPS">GST_TIME_ARGS</a></span> <span class="gtkdoc opt">(</span>duration<span class="gtkdoc opt">));</span> |
| <span class="gtkdoc opt">}</span> <span class="keyword">else</span> <span class="gtkdoc opt">{</span> |
| <span class="function"><a href="https://developer.gnome.org/glib/unstable/glib-Warnings-and-Assertions.html#g-print">g_print</a></span> <span class="gtkdoc opt">(</span><span class="string">"duration query failed..."</span><span class="gtkdoc opt">);</span> |
| <span class="gtkdoc opt">}</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstQuery.html#gst-query-unref">gst_query_unref</a></span> <span class="gtkdoc opt">(</span>query<span class="gtkdoc opt">);</span></pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| |
| <p></p> |
| </div> |
| <div class="refsect1"> |
| <a name="GstQuery.functions_details"></a><h2>Functions</h2> |
| <div class="refsect2"> |
| <a name="GST-QUERY-MAKE-TYPE:CAPS"></a><h3>GST_QUERY_MAKE_TYPE()</h3> |
| <pre class="programlisting">#define GST_QUERY_MAKE_TYPE(num,flags)</pre> |
| <p>when making custom query types, use this macro with the num and |
| the given flags</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.2.5"></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>num</p></td> |
| <td class="parameter_description"><p>the query number to create</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>flags</p></td> |
| <td class="parameter_description"><p>the query flags</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GST-QUERY-TYPE:CAPS"></a><h3>GST_QUERY_TYPE()</h3> |
| <pre class="programlisting">#define GST_QUERY_TYPE(query) (((GstQuery*)(query))->type) |
| </pre> |
| <p>Get the <a class="link" href="GstQuery.html#GstQueryType" title="enum GstQueryType"><span class="type">GstQueryType</span></a> of the query.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.3.5"></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>query</p></td> |
| <td class="parameter_description"><p>the query to query</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GST-QUERY-TYPE-NAME:CAPS"></a><h3>GST_QUERY_TYPE_NAME()</h3> |
| <pre class="programlisting">#define GST_QUERY_TYPE_NAME(query) (gst_query_type_get_name(GST_QUERY_TYPE(query))) |
| </pre> |
| <p>Get a constant string representation of the <a class="link" href="GstQuery.html#GstQueryType" title="enum GstQueryType"><span class="type">GstQueryType</span></a> of the query.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.4.5"></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>query</p></td> |
| <td class="parameter_description"><p>the query to query</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GST-QUERY-IS-UPSTREAM:CAPS"></a><h3>GST_QUERY_IS_UPSTREAM()</h3> |
| <pre class="programlisting">#define GST_QUERY_IS_UPSTREAM(ev) !!(GST_QUERY_TYPE (ev) & GST_QUERY_TYPE_UPSTREAM) |
| </pre> |
| <p>Check if an query can travel upstream.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.5.5"></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>ev</p></td> |
| <td class="parameter_description"><p>the query to query</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GST-QUERY-IS-DOWNSTREAM:CAPS"></a><h3>GST_QUERY_IS_DOWNSTREAM()</h3> |
| <pre class="programlisting">#define GST_QUERY_IS_DOWNSTREAM(ev) !!(GST_QUERY_TYPE (ev) & GST_QUERY_TYPE_DOWNSTREAM) |
| </pre> |
| <p>Check if an query can travel downstream.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.6.5"></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>ev</p></td> |
| <td class="parameter_description"><p>the query to query</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GST-QUERY-IS-SERIALIZED:CAPS"></a><h3>GST_QUERY_IS_SERIALIZED()</h3> |
| <pre class="programlisting">#define GST_QUERY_IS_SERIALIZED(ev) !!(GST_QUERY_TYPE (ev) & GST_QUERY_TYPE_SERIALIZED) |
| </pre> |
| <p>Check if an query is serialized with the data stream.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.7.5"></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>ev</p></td> |
| <td class="parameter_description"><p>the query to query</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-type-get-flags"></a><h3>gst_query_type_get_flags ()</h3> |
| <pre class="programlisting"><a class="link" href="GstQuery.html#GstQueryTypeFlags" title="enum GstQueryTypeFlags"><span class="returnvalue">GstQueryTypeFlags</span></a> |
| gst_query_type_get_flags (<em class="parameter"><code><a class="link" href="GstQuery.html#GstQueryType" title="enum GstQueryType"><span class="type">GstQueryType</span></a> type</code></em>);</pre> |
| <p>Gets the <a class="link" href="GstQuery.html#GstQueryTypeFlags" title="enum GstQueryTypeFlags"><span class="type">GstQueryTypeFlags</span></a> associated with <em class="parameter"><code>type</code></em> |
| .</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.8.5"></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>type</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html#GstQueryType" title="enum GstQueryType"><span class="type">GstQueryType</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.8.6"></a><h4>Returns</h4> |
| <p> a <a class="link" href="GstQuery.html#GstQueryTypeFlags" title="enum GstQueryTypeFlags"><span class="type">GstQueryTypeFlags</span></a>.</p> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-type-get-name"></a><h3>gst_query_type_get_name ()</h3> |
| <pre class="programlisting">const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * |
| gst_query_type_get_name (<em class="parameter"><code><a class="link" href="GstQuery.html#GstQueryType" title="enum GstQueryType"><span class="type">GstQueryType</span></a> type</code></em>);</pre> |
| <p>Get a printable name for the given query type. Do not modify or free.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.9.5"></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>type</p></td> |
| <td class="parameter_description"><p>the query type</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.9.6"></a><h4>Returns</h4> |
| <p> a reference to the static name of the query.</p> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-type-to-quark"></a><h3>gst_query_type_to_quark ()</h3> |
| <pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Quarks.html#GQuark"><span class="returnvalue">GQuark</span></a> |
| gst_query_type_to_quark (<em class="parameter"><code><a class="link" href="GstQuery.html#GstQueryType" title="enum GstQueryType"><span class="type">GstQueryType</span></a> type</code></em>);</pre> |
| <p>Get the unique quark for the given query type.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.10.5"></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>type</p></td> |
| <td class="parameter_description"><p>the query type</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.10.6"></a><h4>Returns</h4> |
| <p> the quark associated with the query type</p> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-ref"></a><h3>gst_query_ref ()</h3> |
| <pre class="programlisting"><a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| gst_query_ref (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *q</code></em>);</pre> |
| <p>Increases the refcount of the given query by one.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.11.5"></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>q</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> to increase the refcount of.</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.11.6"></a><h4>Returns</h4> |
| <p> <em class="parameter"><code>q</code></em> |
| </p> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-unref"></a><h3>gst_query_unref ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_query_unref (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *q</code></em>);</pre> |
| <p>Decreases the refcount of the query. If the refcount reaches 0, the query |
| will be freed.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.12.5"></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>q</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> to decrease the refcount of.</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-copy"></a><h3>gst_query_copy ()</h3> |
| <pre class="programlisting"><a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| gst_query_copy (<em class="parameter"><code>const <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *q</code></em>);</pre> |
| <p>Copies the given query using the copy function of the parent <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a>.</p> |
| <p>Free-function: gst_query_unref</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.13.6"></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>q</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> to copy.</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.13.7"></a><h4>Returns</h4> |
| <p> a new copy of <em class="parameter"><code>q</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-query-make-writable"></a><h3>gst_query_make_writable()</h3> |
| <pre class="programlisting">#define gst_query_make_writable(q) GST_QUERY_CAST (gst_mini_object_make_writable (GST_MINI_OBJECT_CAST (q))) |
| </pre> |
| <p>Makes a writable query from the given query.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.14.5"></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>q</p></td> |
| <td class="parameter_description"><p> a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> to make writable. </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-1.3.43.8.14.6"></a><h4>Returns</h4> |
| <p> a new writable query (possibly same as <em class="parameter"><code>q</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-query-is-writable"></a><h3>gst_query_is_writable()</h3> |
| <pre class="programlisting">#define gst_query_is_writable(q) gst_mini_object_is_writable (GST_MINI_OBJECT_CAST (q)) |
| </pre> |
| <p>Tests if you can safely write data into a query's structure.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.15.5"></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>q</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-replace"></a><h3>gst_query_replace ()</h3> |
| <pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> |
| gst_query_replace (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> **old_query</code></em>, |
| <em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *new_query</code></em>);</pre> |
| <p>Modifies a pointer to a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> to point to a different <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a>. The |
| modification is done atomically (so this is useful for ensuring thread safety |
| in some cases), and the reference counts are updated appropriately (the old |
| query is unreffed, the new one is reffed).</p> |
| <p>Either <em class="parameter"><code>new_query</code></em> |
| or the <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> pointed to by <em class="parameter"><code>old_query</code></em> |
| may be <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.16.6"></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>old_query</p></td> |
| <td class="parameter_description"><p> pointer to a pointer to a |
| <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> to be replaced. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>][<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>new_query</p></td> |
| <td class="parameter_description"><p> pointer to a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> that will |
| replace the query pointed to by <em class="parameter"><code>old_query</code></em> |
| . </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="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.16.7"></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>new_query</code></em> |
| was different from <em class="parameter"><code>old_query</code></em> |
| </p> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-writable-structure"></a><h3>gst_query_writable_structure ()</h3> |
| <pre class="programlisting"><a class="link" href="GstStructure.html" title="GstStructure"><span class="returnvalue">GstStructure</span></a> * |
| gst_query_writable_structure (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</code></em>);</pre> |
| <p>Get the structure of a query. This method should be called with a writable |
| <em class="parameter"><code>query</code></em> |
| so that the returned structure is guaranteed to be writable.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.17.5"></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>query</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.17.6"></a><h4>Returns</h4> |
| <p> the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> of the query. The structure is |
| still owned by the query and will therefore be freed when the query |
| is unreffed. </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-query-new-custom"></a><h3>gst_query_new_custom ()</h3> |
| <pre class="programlisting"><a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| gst_query_new_custom (<em class="parameter"><code><a class="link" href="GstQuery.html#GstQueryType" title="enum GstQueryType"><span class="type">GstQueryType</span></a> type</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>Constructs a new custom query object. Use <a class="link" href="GstQuery.html#gst-query-unref" title="gst_query_unref ()"><code class="function">gst_query_unref()</code></a> |
| when done with it.</p> |
| <p>Free-function: gst_query_unref</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.18.6"></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>type</p></td> |
| <td class="parameter_description"><p>the query type</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>structure</p></td> |
| <td class="parameter_description"><p> a structure for the query. </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> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.18.7"></a><h4>Returns</h4> |
| <p> a new <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</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-query-get-structure"></a><h3>gst_query_get_structure ()</h3> |
| <pre class="programlisting">const <a class="link" href="GstStructure.html" title="GstStructure"><span class="returnvalue">GstStructure</span></a> * |
| gst_query_get_structure (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</code></em>);</pre> |
| <p>Get the structure of a query.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.19.5"></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>query</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.19.6"></a><h4>Returns</h4> |
| <p> the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> of the query. The structure is |
| still owned by the query and will therefore be freed when the query |
| is unreffed. </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-query-new-convert"></a><h3>gst_query_new_convert ()</h3> |
| <pre class="programlisting"><a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| gst_query_new_convert (<em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> src_format</code></em>, |
| <em class="parameter"><code><span class="type">gint64</span> value</code></em>, |
| <em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> dest_format</code></em>);</pre> |
| <p>Constructs a new convert query object. Use <a class="link" href="GstQuery.html#gst-query-unref" title="gst_query_unref ()"><code class="function">gst_query_unref()</code></a> |
| when done with it. A convert query is used to ask for a conversion between |
| one format and another.</p> |
| <p>Free-function: gst_query_unref</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.20.6"></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>src_format</p></td> |
| <td class="parameter_description"><p>the source <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> for the new query</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>value</p></td> |
| <td class="parameter_description"><p>the value to convert</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>dest_format</p></td> |
| <td class="parameter_description"><p>the target <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.20.7"></a><h4>Returns</h4> |
| <p> a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</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-query-set-convert"></a><h3>gst_query_set_convert ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_query_set_convert (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</code></em>, |
| <em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> src_format</code></em>, |
| <em class="parameter"><code><span class="type">gint64</span> src_value</code></em>, |
| <em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> dest_format</code></em>, |
| <em class="parameter"><code><span class="type">gint64</span> dest_value</code></em>);</pre> |
| <p>Answer a convert query by setting the requested values.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.21.5"></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>query</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>src_format</p></td> |
| <td class="parameter_description"><p>the source <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>src_value</p></td> |
| <td class="parameter_description"><p>the source value</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>dest_format</p></td> |
| <td class="parameter_description"><p>the destination <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>dest_value</p></td> |
| <td class="parameter_description"><p>the destination value</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-parse-convert"></a><h3>gst_query_parse_convert ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_query_parse_convert (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</code></em>, |
| <em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> *src_format</code></em>, |
| <em class="parameter"><code><span class="type">gint64</span> *src_value</code></em>, |
| <em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> *dest_format</code></em>, |
| <em class="parameter"><code><span class="type">gint64</span> *dest_value</code></em>);</pre> |
| <p>Parse a convert query answer. Any of <em class="parameter"><code>src_format</code></em> |
| , <em class="parameter"><code>src_value</code></em> |
| , <em class="parameter"><code>dest_format</code></em> |
| , |
| and <em class="parameter"><code>dest_value</code></em> |
| may be <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, in which case that value is omitted.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.22.5"></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>query</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>src_format</p></td> |
| <td class="parameter_description"><p> the storage for the <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> of the |
| source value, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>src_value</p></td> |
| <td class="parameter_description"><p> the storage for the source value, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>dest_format</p></td> |
| <td class="parameter_description"><p> the storage for the <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> of the |
| destination value, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>dest_value</p></td> |
| <td class="parameter_description"><p> the storage for the destination value, |
| or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</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> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-new-position"></a><h3>gst_query_new_position ()</h3> |
| <pre class="programlisting"><a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| gst_query_new_position (<em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> format</code></em>);</pre> |
| <p>Constructs a new query stream position query object. Use <a class="link" href="GstQuery.html#gst-query-unref" title="gst_query_unref ()"><code class="function">gst_query_unref()</code></a> |
| when done with it. A position query is used to query the current position |
| of playback in the streams, in some format.</p> |
| <p>Free-function: gst_query_unref</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.23.6"></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>format</p></td> |
| <td class="parameter_description"><p>the default <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> for the new query</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.23.7"></a><h4>Returns</h4> |
| <p> a new <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</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-query-set-position"></a><h3>gst_query_set_position ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_query_set_position (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</code></em>, |
| <em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> format</code></em>, |
| <em class="parameter"><code><span class="type">gint64</span> cur</code></em>);</pre> |
| <p>Answer a position query by setting the requested value in the given format.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.24.5"></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>query</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> with query type GST_QUERY_POSITION</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>format</p></td> |
| <td class="parameter_description"><p>the requested <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>cur</p></td> |
| <td class="parameter_description"><p>the position to set</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-parse-position"></a><h3>gst_query_parse_position ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_query_parse_position (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</code></em>, |
| <em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> *format</code></em>, |
| <em class="parameter"><code><span class="type">gint64</span> *cur</code></em>);</pre> |
| <p>Parse a position query, writing the format into <em class="parameter"><code>format</code></em> |
| , and the position |
| into <em class="parameter"><code>cur</code></em> |
| , if the respective parameters are non-<a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.25.5"></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>query</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>format</p></td> |
| <td class="parameter_description"><p> the storage for the <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> of the |
| position values (may be <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>). </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>cur</p></td> |
| <td class="parameter_description"><p> the storage for the current position (may be <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>). </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</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> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-new-duration"></a><h3>gst_query_new_duration ()</h3> |
| <pre class="programlisting"><a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| gst_query_new_duration (<em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> format</code></em>);</pre> |
| <p>Constructs a new stream duration query object to query in the given format. |
| Use <a class="link" href="GstQuery.html#gst-query-unref" title="gst_query_unref ()"><code class="function">gst_query_unref()</code></a> when done with it. A duration query will give the |
| total length of the stream.</p> |
| <p>Free-function: gst_query_unref</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.26.6"></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>format</p></td> |
| <td class="parameter_description"><p>the <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> for this duration query</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.26.7"></a><h4>Returns</h4> |
| <p> a new <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</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-query-set-duration"></a><h3>gst_query_set_duration ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_query_set_duration (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</code></em>, |
| <em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> format</code></em>, |
| <em class="parameter"><code><span class="type">gint64</span> duration</code></em>);</pre> |
| <p>Answer a duration query by setting the requested value in the given format.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.27.5"></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>query</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>format</p></td> |
| <td class="parameter_description"><p>the <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> for the duration</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>duration</p></td> |
| <td class="parameter_description"><p>the duration of the stream</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-parse-duration"></a><h3>gst_query_parse_duration ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_query_parse_duration (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</code></em>, |
| <em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> *format</code></em>, |
| <em class="parameter"><code><span class="type">gint64</span> *duration</code></em>);</pre> |
| <p>Parse a duration query answer. Write the format of the duration into <em class="parameter"><code>format</code></em> |
| , |
| and the value into <em class="parameter"><code>duration</code></em> |
| , if the respective variables are non-<a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.28.5"></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>query</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>format</p></td> |
| <td class="parameter_description"><p> the storage for the <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> of the duration |
| value, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>duration</p></td> |
| <td class="parameter_description"><p> the storage for the total duration, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</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> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-new-latency"></a><h3>gst_query_new_latency ()</h3> |
| <pre class="programlisting"><a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| gst_query_new_latency (<em class="parameter"><code><span class="type">void</span></code></em>);</pre> |
| <p>Constructs a new latency query object. |
| Use <a class="link" href="GstQuery.html#gst-query-unref" title="gst_query_unref ()"><code class="function">gst_query_unref()</code></a> when done with it. A latency query is usually performed |
| by sinks to compensate for additional latency introduced by elements in the |
| pipeline.</p> |
| <p>Free-function: gst_query_unref</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.29.6"></a><h4>Returns</h4> |
| <p> a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</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-query-parse-latency"></a><h3>gst_query_parse_latency ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_query_parse_latency (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> *live</code></em>, |
| <em class="parameter"><code><a class="link" href="GstClock.html#GstClockTime" title="GstClockTime"><span class="type">GstClockTime</span></a> *min_latency</code></em>, |
| <em class="parameter"><code><a class="link" href="GstClock.html#GstClockTime" title="GstClockTime"><span class="type">GstClockTime</span></a> *max_latency</code></em>);</pre> |
| <p>Parse a latency query answer.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.30.5"></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>query</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>live</p></td> |
| <td class="parameter_description"><p> storage for live or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>min_latency</p></td> |
| <td class="parameter_description"><p> the storage for the min latency or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>max_latency</p></td> |
| <td class="parameter_description"><p> the storage for the max latency or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</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> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-set-latency"></a><h3>gst_query_set_latency ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_query_set_latency (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> live</code></em>, |
| <em class="parameter"><code><a class="link" href="GstClock.html#GstClockTime" title="GstClockTime"><span class="type">GstClockTime</span></a> min_latency</code></em>, |
| <em class="parameter"><code><a class="link" href="GstClock.html#GstClockTime" title="GstClockTime"><span class="type">GstClockTime</span></a> max_latency</code></em>);</pre> |
| <p>Answer a latency query by setting the requested values in the given format.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.31.5"></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>query</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>live</p></td> |
| <td class="parameter_description"><p>if there is a live element upstream</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>min_latency</p></td> |
| <td class="parameter_description"><p>the minimal latency of the upstream elements</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>max_latency</p></td> |
| <td class="parameter_description"><p>the maximal latency of the upstream elements</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-new-seeking"></a><h3>gst_query_new_seeking ()</h3> |
| <pre class="programlisting"><a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| gst_query_new_seeking (<em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> format</code></em>);</pre> |
| <p>Constructs a new query object for querying seeking properties of |
| the stream.</p> |
| <p>Free-function: gst_query_unref</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.32.6"></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>format</p></td> |
| <td class="parameter_description"><p>the default <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> for the new query</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.32.7"></a><h4>Returns</h4> |
| <p> a new <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</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-query-set-seeking"></a><h3>gst_query_set_seeking ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_query_set_seeking (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</code></em>, |
| <em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> format</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> seekable</code></em>, |
| <em class="parameter"><code><span class="type">gint64</span> segment_start</code></em>, |
| <em class="parameter"><code><span class="type">gint64</span> segment_end</code></em>);</pre> |
| <p>Set the seeking query result fields in <em class="parameter"><code>query</code></em> |
| .</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.33.5"></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>query</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>format</p></td> |
| <td class="parameter_description"><p>the format to set for the <em class="parameter"><code>segment_start</code></em> |
| and <em class="parameter"><code>segment_end</code></em> |
| values</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>seekable</p></td> |
| <td class="parameter_description"><p>the seekable flag to set</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>segment_start</p></td> |
| <td class="parameter_description"><p>the segment_start to set</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>segment_end</p></td> |
| <td class="parameter_description"><p>the segment_end to set</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-parse-seeking"></a><h3>gst_query_parse_seeking ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_query_parse_seeking (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</code></em>, |
| <em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> *format</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> *seekable</code></em>, |
| <em class="parameter"><code><span class="type">gint64</span> *segment_start</code></em>, |
| <em class="parameter"><code><span class="type">gint64</span> *segment_end</code></em>);</pre> |
| <p>Parse a seeking query, writing the format into <em class="parameter"><code>format</code></em> |
| , and |
| other results into the passed parameters, if the respective parameters |
| are non-<a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.34.5"></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>query</p></td> |
| <td class="parameter_description"><p>a GST_QUERY_SEEKING type query <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>format</p></td> |
| <td class="parameter_description"><p> the format to set for the <em class="parameter"><code>segment_start</code></em> |
| and <em class="parameter"><code>segment_end</code></em> |
| values, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>seekable</p></td> |
| <td class="parameter_description"><p> the seekable flag to set, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>segment_start</p></td> |
| <td class="parameter_description"><p> the segment_start to set, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>segment_end</p></td> |
| <td class="parameter_description"><p> the segment_end to set, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</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> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-new-formats"></a><h3>gst_query_new_formats ()</h3> |
| <pre class="programlisting"><a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| gst_query_new_formats (<em class="parameter"><code><span class="type">void</span></code></em>);</pre> |
| <p>Constructs a new query object for querying formats of |
| the stream.</p> |
| <p>Free-function: gst_query_unref</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.35.6"></a><h4>Returns</h4> |
| <p> a new <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</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-query-set-formats"></a><h3>gst_query_set_formats ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_query_set_formats (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> n_formats</code></em>, |
| <em class="parameter"><code>...</code></em>);</pre> |
| <p>Set the formats query result fields in <em class="parameter"><code>query</code></em> |
| . The number of formats passed |
| must be equal to <em class="parameter"><code>n_formats</code></em> |
| .</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.36.5"></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>query</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>n_formats</p></td> |
| <td class="parameter_description"><p>the number of formats to set.</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>...</p></td> |
| <td class="parameter_description"><p>A number of <em class="parameter"><code>GstFormats</code></em> |
| equal to <em class="parameter"><code>n_formats</code></em> |
| .</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-set-formatsv"></a><h3>gst_query_set_formatsv ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_query_set_formatsv (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> n_formats</code></em>, |
| <em class="parameter"><code>const <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> *formats</code></em>);</pre> |
| <p>Set the formats query result fields in <em class="parameter"><code>query</code></em> |
| . The number of formats passed |
| in the <em class="parameter"><code>formats</code></em> |
| array must be equal to <em class="parameter"><code>n_formats</code></em> |
| .</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.37.5"></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>query</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>n_formats</p></td> |
| <td class="parameter_description"><p>the number of formats to set.</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>formats</p></td> |
| <td class="parameter_description"><p> an array containing <em class="parameter"><code>n_formats</code></em> |
| <em class="parameter"><code>GstFormat</code></em> |
| values. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input. Default is transfer none."><span class="acronym">in</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=n_formats]</span></td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-parse-n-formats"></a><h3>gst_query_parse_n_formats ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_query_parse_n_formats (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</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> *n_formats</code></em>);</pre> |
| <p>Parse the number of formats in the formats <em class="parameter"><code>query</code></em> |
| .</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.38.5"></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>query</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>n_formats</p></td> |
| <td class="parameter_description"><p> the number of formats in this query. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</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> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-parse-nth-format"></a><h3>gst_query_parse_nth_format ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_query_parse_nth_format (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</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>, |
| <em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> *format</code></em>);</pre> |
| <p>Parse the format query and retrieve the <em class="parameter"><code>nth</code></em> |
| format from it into |
| <em class="parameter"><code>format</code></em> |
| . If the list contains less elements than <em class="parameter"><code>nth</code></em> |
| , <em class="parameter"><code>format</code></em> |
| will be |
| set to GST_FORMAT_UNDEFINED.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.39.5"></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>query</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>nth</p></td> |
| <td class="parameter_description"><p> the nth format to retrieve. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>format</p></td> |
| <td class="parameter_description"><p> a pointer to store the nth format. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</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> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-new-segment"></a><h3>gst_query_new_segment ()</h3> |
| <pre class="programlisting"><a class="link" href="GstQuery.html" title="GstQuery"><span class="returnvalue">GstQuery</span></a> * |
| gst_query_new_segment (<em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> format</code></em>);</pre> |
| <p>Constructs a new segment query object. Use <a class="link" href="GstQuery.html#gst-query-unref" title="gst_query_unref ()"><code class="function">gst_query_unref()</code></a> |
| when done with it. A segment query is used to discover information about the |
| currently configured segment for playback.</p> |
| <p>Free-function: gst_query_unref</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.40.6"></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>format</p></td> |
| <td class="parameter_description"><p>the <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> for the new query</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.40.7"></a><h4>Returns</h4> |
| <p> a new <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</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-query-set-segment"></a><h3>gst_query_set_segment ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_query_set_segment (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> rate</code></em>, |
| <em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> format</code></em>, |
| <em class="parameter"><code><span class="type">gint64</span> start_value</code></em>, |
| <em class="parameter"><code><span class="type">gint64</span> stop_value</code></em>);</pre> |
| <p>Answer a segment query by setting the requested values. The normal |
| playback segment of a pipeline is 0 to duration at the default rate of |
| 1.0. If a seek was performed on the pipeline to play a different |
| segment, this query will return the range specified in the last seek.</p> |
| <p><em class="parameter"><code>start_value</code></em> |
| and <em class="parameter"><code>stop_value</code></em> |
| will respectively contain the configured |
| playback range start and stop values expressed in <em class="parameter"><code>format</code></em> |
| . |
| The values are always between 0 and the duration of the media and |
| <em class="parameter"><code>start_value</code></em> |
| <= <em class="parameter"><code>stop_value</code></em> |
| . <em class="parameter"><code>rate</code></em> |
| will contain the playback rate. For |
| negative rates, playback will actually happen from <em class="parameter"><code>stop_value</code></em> |
| to |
| <em class="parameter"><code>start_value</code></em> |
| .</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.41.6"></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>query</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>rate</p></td> |
| <td class="parameter_description"><p>the rate of the segment</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>format</p></td> |
| <td class="parameter_description"><p>the <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> of the segment values (<em class="parameter"><code>start_value</code></em> |
| and <em class="parameter"><code>stop_value</code></em> |
| )</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>start_value</p></td> |
| <td class="parameter_description"><p>the start value</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>stop_value</p></td> |
| <td class="parameter_description"><p>the stop value</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-query-parse-segment"></a><h3>gst_query_parse_segment ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_query_parse_segment (<em class="parameter"><code><a class="link" href="GstQuery.html" title="GstQuery"><span class="type">GstQuery</span></a> *query</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> *rate</code></em>, |
| <em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> *format</code></em>, |
| <em class="parameter"><code><span class="type">gint64</span> *start_value</code></em>, |
| <em class="parameter"><code><span class="type">gint64</span> *stop_value</code></em>);</pre> |
| <p>Parse a segment query answer. Any of <em class="parameter"><code>rate</code></em> |
| , <em class="parameter"><code>format</code></em> |
| , <em class="parameter"><code>start_value</code></em> |
| , and |
| <em class="parameter"><code>stop_value</code></em> |
| may be <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, which will cause this value to be omitted.</p> |
| <p>See <a class="link" href="GstQuery.html#gst-query-set-segment" title="gst_query_set_segment ()"><code class="function">gst_query_set_segment()</code></a> for an explanation of the function arguments.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.43.8.42.6"></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> |
|
