What are the benchmark programs for Message passing?

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gstreamer::message

GStreamer::Message(3pm) 				User Contributed Perl Documentation				   GStreamer::Message(3pm)

NAME

       GStreamer::Message -  Lightweight objects to signal the application of pipeline events

DESCRIPTION

       The various nmessage types are represented as subclasses:

       GStreamer::Message::EOS
       GStreamer::Message::Error
       GStreamer::Message::Warning
       GStreamer::Message::Info
       GStreamer::Message::Tag
       GStreamer::Message::Buffering
       GStreamer::Message::StateChanged
       GStreamer::Message::StateDirty
       GStreamer::Message::StepDone
       GStreamer::Message::ClockProvide
       GStreamer::Message::ClockLost
       GStreamer::Message::NewClock
       GStreamer::Message::StructureChange
       GStreamer::Message::StreamStatus
       GStreamer::Message::Application
       GStreamer::Message::Element
       GStreamer::Message::SegmentStart
       GStreamer::Message::SegmentDone
       GStreamer::Message::Duration
       GStreamer::Message::Latency [0.10.12]
       GStreamer::Message::AsyncStart [0.10.13]
       GStreamer::Message::AsyncDone [0.10.13]

       To create a new message, you call the constructor of the corresponding class.

       To check if a message is of a certain type, use the & operator on the type method:

	 if ($message -> type & "error") {
	   # ...
	 }

	 elsif ($message -> type & "eos") {
	   # ...
	 }

       To get to the content of a message, call the corresponding accessor:

	 if ($message -> type & "state-changed") {
	   my $old_state = $message -> old_state;
	   my $new_state = $message -> new_state;
	   my $pending = $message -> pending;

	   # ...
	 }

	 elsif ($message -> type & "segment-done") {
	   my $format = $message -> format;
	   my $position = $message -> position;

	   # ...
	 }

METHODS

   object = $message->src
   structure = $message->get_structure
   64 bit unsigned = $message->timestamp
   messagetype = $message->type
ENUMS AND FLAGS

   flags GStreamer::MessageType
       o   'unknown' / 'GST_MESSAGE_UNKNOWN'

       o   'eos' / 'GST_MESSAGE_EOS'

       o   'error' / 'GST_MESSAGE_ERROR'

       o   'warning' / 'GST_MESSAGE_WARNING'

       o   'info' / 'GST_MESSAGE_INFO'

       o   'tag' / 'GST_MESSAGE_TAG'

       o   'buffering' / 'GST_MESSAGE_BUFFERING'

       o   'state-changed' / 'GST_MESSAGE_STATE_CHANGED'

       o   'state-dirty' / 'GST_MESSAGE_STATE_DIRTY'

       o   'step-done' / 'GST_MESSAGE_STEP_DONE'

       o   'clock-provide' / 'GST_MESSAGE_CLOCK_PROVIDE'

       o   'clock-lost' / 'GST_MESSAGE_CLOCK_LOST'

       o   'new-clock' / 'GST_MESSAGE_NEW_CLOCK'

       o   'structure-change' / 'GST_MESSAGE_STRUCTURE_CHANGE'

       o   'stream-status' / 'GST_MESSAGE_STREAM_STATUS'

       o   'application' / 'GST_MESSAGE_APPLICATION'

       o   'element' / 'GST_MESSAGE_ELEMENT'

       o   'segment-start' / 'GST_MESSAGE_SEGMENT_START'

       o   'segment-done' / 'GST_MESSAGE_SEGMENT_DONE'

       o   'duration' / 'GST_MESSAGE_DURATION'

       o   'latency' / 'GST_MESSAGE_LATENCY'

       o   'async-start' / 'GST_MESSAGE_ASYNC_START'

       o   'async-done' / 'GST_MESSAGE_ASYNC_DONE'

       o   'request-state' / 'GST_MESSAGE_REQUEST_STATE'

       o   'step-start' / 'GST_MESSAGE_STEP_START'

       o   'qos' / 'GST_MESSAGE_QOS'

       o   'progress' / 'GST_MESSAGE_PROGRESS'

       o   'any' / 'GST_MESSAGE_ANY'

SEE ALSO

       GStreamer

COPYRIGHT

       Copyright (C) 2005-2011 by the gtk2-perl team.

       This software is licensed under the LGPL.  See GStreamer for a full notice.

perl v5.14.2							    2012-03-01						   GStreamer::Message(3pm)

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