gstreamer/docs/gst/tmpl/gstquery.sgml

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<!-- ##### SECTION Title ##### -->
GstQuery
<!-- ##### SECTION Short_Description ##### -->
Dynamically register new query types
<!-- ##### SECTION Long_Description ##### -->
<para>
GstQuery functions are used to register a new query types to the gstreamer core.
Query types can be used to perform queries on pads and elements.
</para>
<!-- ##### SECTION See_Also ##### -->
<para>
#GstPad, #GstElement
</para>
<!-- ##### ENUM GstQueryType ##### -->
<para>
Standard predefined Query types
</para>
@GST_QUERY_NONE: invalid query type
@GST_QUERY_TOTAL: total length of stream
@GST_QUERY_POSITION: current position in stream
@GST_QUERY_LATENCY: latency of stream
@GST_QUERY_JITTER: current jitter of stream
@GST_QUERY_START: start of configured segment
@GST_QUERY_SEGMENT_END: end of configured segment
@GST_QUERY_RATE: current rate of the stream
<!-- ##### MACRO GST_QUERY_TYPE_RATE_DEN ##### -->
<para>
Rates are relative to this value
</para>
<!-- ##### STRUCT GstQueryTypeDefinition ##### -->
<para>
A Query Type definition
</para>
@value: the unique id of the Query type
@nick: a short nick
@description: a longer description of the query type
<!-- ##### MACRO GST_QUERY_TYPE_FUNCTION ##### -->
<para>
Convenience function to define a function that returns an array of query types.
</para>
@type: Type of first argument for function
@functionname: The name of the function
@...: query types, 0 to end the list
<!-- ##### FUNCTION gst_query_type_register ##### -->
<para>
</para>
@nick:
@description:
@Returns:
<!-- ##### FUNCTION gst_query_type_get_by_nick ##### -->
<para>
</para>
@nick:
@Returns:
<!-- ##### FUNCTION gst_query_types_contains ##### -->
<para>
</para>
@types:
@type:
@Returns:
<!-- ##### FUNCTION gst_query_type_get_details ##### -->
<para>
</para>
@type:
@Returns:
<!-- ##### FUNCTION gst_query_type_get_definitions ##### -->
<para>
</para>
@Returns: