Message

Object Hierarchy:

Description:

  gst_bus_post (bus, gst_message_new_eos());

Content:

Static methods:

• public static bool take (ref Message old_message, owned Message? new_message)

Creation methods:

• public Message.application (Object? src, owned Structure structure)
  Create a new application-typed message.
• public Message.async_done (Object? src, ClockTime running_time)
  The message is posted when elements completed an ASYNC state change.
• public Message.async_start (Object? src)
  This message is posted by elements when they start an ASYNC state change.
• public Message.buffering (Object? src, int percent)
  Create a new buffering message.
• public Message.clock_lost (Object? src, Clock clock)
  Create a clock lost message.
• public Message.clock_provide (Object? src, Clock clock, bool ready)
  Create a clock provide message.
• public Message.custom (MessageType type, Object? src, owned Structure? structure)
  Create a new custom-typed message.
• public Message.device_added (Object? src, Device device)
  Creates a new device-added message.
• public Message.device_changed (Object? src, Device device, Device changed_device)
  Creates a new device-changed message.
• public Message.device_removed (Object? src, Device device)
  Creates a new device-removed message.
• public Message.duration_changed (Object? src)
  Create a new duration changed message.
• public Message.element (Object? src, owned Structure structure)
  Create a new element-specific message.
• public Message.eos (Object? src)
  Create a new eos message.
• public Message.error (Object? src, Error error, string debug)
  Create a new error message.
• public Message.error_with_details (Object? src, Error error, string debug, owned Structure? details)
  Create a new error message.
• public Message.have_context (Object? src, owned Context context)
  This message is posted when an element has a new local Context.
• public Message.info (Object? src, Error error, string debug)
  Create a new info message.
• public Message.info_with_details (Object? src, Error error, string debug, owned Structure? details)
  Create a new info message.
• public Message.instant_rate_request (Object? src, double rate_multiplier)
  Creates a new instant-rate-request message.
• public Message.latency (Object? src)
  This message can be posted by elements when their latency requirements have changed.
• public Message.need_context (Object? src, string context_type)
  This message is posted when an element needs a specific Context.
• public Message.new_clock (Object? src, Clock clock)
  Create a new clock message.
• public Message.progress (Object? src, ProgressType type, string code, string text)
  Progress messages are posted by elements when they use an asynchronous task to perform actions triggered by a state change.
• public Message.property_notify (Object src, string property_name, owned Value? val)
• public Message.qos (Object? src, bool live, uint64 running_time, uint64 stream_time, uint64 timestamp, uint64 duration)
  A QOS message is posted on the bus whenever an element decides to drop a buffer because of QoS reasons or whenever it changes its processing strategy because of QoS reasons (quality adjustments such as processing at lower accuracy).
• public Message.redirect (Object? src, string location, owned TagList? tag_list, owned Structure? entry_struct)
  Creates a new redirect message and adds a new entry to it.
• public Message.request_state (Object? src, State state)
  This message can be posted by elements when they want to have their state changed.
• public Message.reset_time (Object? src, ClockTime running_time)
  This message is posted when the pipeline running-time should be reset to running_time, like after a flushing seek.
• public Message.segment_done (Object? src, Format format, int64 position)
  Create a new segment done message.
• public Message.segment_start (Object? src, Format format, int64 position)
  Create a new segment message.
• public Message.state_changed (Object? src, State oldstate, State newstate, State pending)
  Create a state change message.
• public Message.state_dirty (Object? src)
  Create a state dirty message.
• public Message.step_done (Object? src, Format format, uint64 amount, double rate, bool flush, bool intermediate, uint64 duration, bool eos)
  This message is posted by elements when they complete a part, when intermediate set to true, or a complete step operation.
• public Message.step_start (Object? src, bool active, Format format, uint64 amount, double rate, bool flush, bool intermediate)
  This message is posted by elements when they accept or activate a new step event for amount in format.
• public Message.stream_collection (Object? src, StreamCollection collection)
  Creates a new stream-collection message.
• public Message.stream_start (Object? src)
  Create a new stream_start message.
• public Message.stream_status (Object? src, StreamStatusType type, Element owner)
  Create a new stream status message.
• public Message.streams_selected (Object? src, StreamCollection collection)
  Creates a new steams-selected message.
• public Message.structure_change (Object? src, StructureChangeType type, Element owner, bool busy)
  Create a new structure change message.
• public Message.tag (Object? src, owned TagList tag_list)
  Create a new tag message.
• public Message.toc (Object? src, Toc toc, bool updated)
  Create a new TOC message.
• public Message.warning (Object? src, Error error, string debug)
  Create a new warning message.
• public Message.warning_with_details (Object? src, Error error, string debug, owned Structure? details)
  Create a new warning message.

Methods:

• public void add_redirect_entry (string location, owned TagList? tag_list, owned Structure? entry_struct)
  Creates and appends a new entry.
• public size_t get_num_redirect_entries ()
• public uint32 get_seqnum ()
  Retrieve the sequence number of a message.
• public unowned Value? get_stream_status_object ()
  Extracts the object managing the streaming thread from this.
• public unowned Structure? get_structure ()
  Access the structure of the message.
• public bool has_name (string name)
  Checks if this has the given name .
• public void parse_async_done (out ClockTime running_time)
  Extract the running_time from the async_done message.
• public void parse_buffering (out int percent)
  Extracts the buffering percent from the GstMessage.
• public void parse_buffering_stats (out BufferingMode mode, out int avg_in, out int avg_out, out int64 buffering_left)
  Extracts the buffering stats values from this .
• public void parse_clock_lost (out unowned Clock clock)
  Extracts the lost clock from the GstMessage.
• public void parse_clock_provide (out unowned Clock clock, out bool ready)
  Extracts the clock and ready flag from the GstMessage.
• public bool parse_context_type (out unowned string context_type)
  Parse a context type from an existing GST_MESSAGE_NEED_CONTEXT message.
• public void parse_device_added (out Device device)
  Parses a device-added message.
• public void parse_device_changed (out Device device, out Device changed_device)
  Parses a device-changed message.
• public void parse_device_removed (out Device device)
  Parses a device-removed message.
• public void parse_error (out Error gerror, out string? debug)
  Extracts the GError and debug string from the GstMessage.
• public void parse_error_details (out unowned Structure? structure)
  Returns the optional details structure, may be NULL if none.
• public bool parse_group_id (out uint group_id)
  Extract the group from the STREAM_START message.
• public void parse_have_context (out Context context)
  Extract the context from the HAVE_CONTEXT message.
• public void parse_info (out Error gerror, out string? debug)
  Extracts the GError and debug string from the GstMessage.
• public void parse_info_details (out unowned Structure? structure)
  Returns the optional details structure, may be NULL if none The returned structure must not be freed.
• public void parse_instant_rate_request (out double rate_multiplier)
  Parses the rate_multiplier from the instant-rate-request message.
• public void parse_new_clock (out unowned Clock clock)
  Extracts the new clock from the GstMessage.
• public void parse_progress (out ProgressType type, out string code, out string text)
  Parses the progress type, code and text .
• public void parse_property_notify (out unowned Object object, out unowned string property_name, out unowned Value? property_value)
  Parses a property-notify message.
• public void parse_qos (out bool live, out uint64 running_time, out uint64 stream_time, out uint64 timestamp, out uint64 duration)
  Extract the timestamps and live status from the QoS message.
• public void parse_qos_stats (out Format format, out uint64 processed, out uint64 dropped)
  Extract the QoS stats representing the history of the current continuous pipeline playback period.
• public void parse_qos_values (out int64 jitter, out double proportion, out int quality)
  Extract the QoS values that have been calculated/analysed from the QoS data
• public void parse_redirect_entry (size_t entry_index, out unowned string location, out unowned TagList? tag_list, out unowned Structure? entry_struct)
  Parses the location and/or structure from the entry with the given index.
• public void parse_request_state (out State state)
  Extract the requested state from the request_state message.
• public void parse_reset_time (out ClockTime running_time)
  Extract the running-time from the RESET_TIME message.
• public void parse_segment_done (out Format format, out int64 position)
  Extracts the position and format from the segment done message.
• public void parse_segment_start (out Format format, out int64 position)
  Extracts the position and format from the segment start message.
• public void parse_state_changed (out State oldstate, out State newstate, out State pending)
  Extracts the old and new states from the GstMessage.
• public void parse_step_done (out Format format, out uint64 amount, out double rate, out bool flush, out bool intermediate, out uint64 duration, out bool eos)
  Extract the values the step_done message.
• public void parse_step_start (out bool active, out Format format, out uint64 amount, out double rate, out bool flush, out bool intermediate)
  Extract the values from step_start message.
• public void parse_stream_collection (out StreamCollection collection)
  Parses a stream-collection message.
• public void parse_stream_status (out StreamStatusType type, out unowned Element owner)
  Extracts the stream status type and owner the GstMessage.
• public void parse_streams_selected (out StreamCollection collection)
  Parses a streams-selected message.
• public void parse_structure_change (out StructureChangeType type, out unowned Element owner, out bool busy)
  Extracts the change type and completion status from the GstMessage.
• public void parse_tag (out TagList tag_list)
  Extracts the tag list from the GstMessage.
• public void parse_toc (out Toc toc, out bool updated)
  Extract the TOC from the Message.
• public void parse_warning (out Error gerror, out string? debug)
  Extracts the GError and debug string from the GstMessage.
• public void parse_warning_details (out unowned Structure? structure)
  Returns the optional details structure, may be NULL if none The returned structure must not be freed.
• public void set_buffering_stats (BufferingMode mode, int avg_in, int avg_out, int64 buffering_left)
  Configures the buffering stats values in this .
• public void set_group_id (uint group_id)
  Sets the group id on the stream-start message.
• public void set_qos_stats (Format format, uint64 processed, uint64 dropped)
  Set the QoS stats representing the history of the current continuous pipeline playback period.
• public void set_qos_values (int64 jitter, double proportion, int quality)
  Set the QoS values that have been calculated/analysed from the QoS data
• public void set_seqnum (uint32 seqnum)
  Set the sequence number of a message.
• public void set_stream_status_object (Value object)
  Configures the object handling the streaming thread.
• public void streams_selected_add (Stream stream)
  Adds the stream to the this.
• public uint streams_selected_get_size ()
  Returns the number of streams contained in the this.
• public Stream? streams_selected_get_stream (uint idx)
  Retrieves the Stream with index index from the this.
• public unowned Structure writable_structure ()
  Get a writable version of the structure.

Fields:

• public uint32 seqnum
• public unowned Object src
• public uint64 timestamp
• public MessageType type

Inherited Members: