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
uint64 = $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 'any' / 'GST_MESSAGE_ANY'
SEE ALSO
GStreamer
COPYRIGHT
Copyright (C) 2005-2008 by the gtk2-perl team.
- This software is licensed under the LGPL. See GStreamer for a full
notice.