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105 lines
1.9 KiB
Text
105 lines
1.9 KiB
Text
<!-- ##### SECTION Title ##### -->
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GstQuery
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<!-- ##### SECTION Short_Description ##### -->
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Dynamically register new query types
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<!-- ##### SECTION Long_Description ##### -->
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<para>
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GstQuery functions are used to register a new query types to GStreamer's core.
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Query types can be used to perform queries on pads and elements.
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</para>
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<!-- ##### SECTION See_Also ##### -->
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<para>
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#GstPad, #GstElement
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</para>
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<!-- ##### ENUM GstQueryType ##### -->
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<para>
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Standard predefined Query types
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</para>
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@GST_QUERY_NONE: invalid query type
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@GST_QUERY_TOTAL: total length of stream
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@GST_QUERY_POSITION: current position in stream
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@GST_QUERY_LATENCY: latency of stream
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@GST_QUERY_JITTER: current jitter of stream
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@GST_QUERY_START: start of configured segment
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@GST_QUERY_SEGMENT_END: end of configured segment
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@GST_QUERY_RATE: current rate of the stream
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<!-- ##### MACRO GST_QUERY_TYPE_RATE_DEN ##### -->
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<para>
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Rates are relative to this value
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</para>
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<!-- ##### STRUCT GstQueryTypeDefinition ##### -->
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<para>
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A Query Type definition
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</para>
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@value: the unique id of the Query type
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@nick: a short nick
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@description: a longer description of the query type
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<!-- ##### MACRO GST_QUERY_TYPE_FUNCTION ##### -->
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<para>
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Convenience function to define a function that returns an array of query types.
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</para>
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@type: Type of first argument for function
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@functionname: The name of the function
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@...: query types, 0 to end the list
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<!-- ##### FUNCTION gst_query_type_register ##### -->
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<para>
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</para>
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@nick:
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@description:
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@Returns:
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<!-- ##### FUNCTION gst_query_type_get_by_nick ##### -->
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<para>
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</para>
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@nick:
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@Returns:
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<!-- ##### FUNCTION gst_query_types_contains ##### -->
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<para>
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</para>
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@types:
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@type:
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@Returns:
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<!-- ##### FUNCTION gst_query_type_get_details ##### -->
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<para>
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</para>
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@type:
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@Returns:
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<!-- # Unused Parameters # -->
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@Param1:
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<!-- ##### FUNCTION gst_query_type_get_definitions ##### -->
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<para>
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</para>
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@Returns:
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