TfStream

TfStream — Handles a media Stream

Synopsis

                    TfStream;
                    TfStreamClass;
void                tf_stream_error                     (TfStream *self,
                                                         TpMediaStreamError error,
                                                         const gchar *message);
guint               tf_stream_get_id                    (TfStream *stream);

Object Hierarchy

  GObject
   +----TfStream

Properties

  "channel"                  TfChannel*            : Read / Write / Construct Only
  "codec-preferences"        FsCodecGList*         : Read / Write / Construct Only
  "direction"                guint                 : Read / Write / Construct Only
  "farsight-conference"      FsConference*         : Read / Write / Construct Only
  "farsight-participant"     FsParticipant*        : Read / Write / Construct Only
  "farsight-session"         FsSession*            : Read
  "farsight-stream"          FsStream*             : Read
  "media-type"               guint                 : Read / Write / Construct Only
  "nat-properties"           gpointer              : Write / Construct Only
  "proxy"                    TpMediaStreamHandler*  : Read / Write / Construct Only
  "resources"                guint                 : Read
  "sink-pad"                 GstPad*               : Read
  "stream-id"                guint                 : Read / Write / Construct Only
  "tos"                      guint                 : Read / Write

Signals

  "closed"                                         : Run Last
  "error"                                          : Run Last
  "free-resource"                                  : Run Last
  "request-resource"                               : Run Last
  "src-pad-added"                                  : Run Last

Description

These objects handle media streams and wrap the appropriate Farsight 2 objects. It is used to interact on a stream level with the other parts of the media pipeline and the proper UI.

Details

TfStream

typedef struct _TfStream TfStream;

All other members are privated

TfStreamClass

typedef struct {
  GObjectClass parent_class;
} TfStreamClass;

There are no overridable functions

GObjectClass parent_class; the parent GObjecClass

tf_stream_error ()

void                tf_stream_error                     (TfStream *self,
                                                         TpMediaStreamError error,
                                                         const gchar *message);

This function can be used to tell the connection manager that an error has happened on a specific stream.

self : a TfStream
error : the error number as a TpMediaStreamError
message : the message for this error

tf_stream_get_id ()

guint               tf_stream_get_id                    (TfStream *stream);

Quick getter for the stream id

stream : A TfStream
Returns : the stream's id

Property Details

The "channel" property

  "channel"                  TfChannel*            : Read / Write / Construct Only

The TfChannel this stream is in.

The "codec-preferences" property

  "codec-preferences"        FsCodecGList*         : Read / Write / Construct Only

A GList of FsCodec representing preferences to be passed to the fs_session_set_local_preferences() function.

The "direction" property

  "direction"                guint                 : Read / Write / Construct Only

The Telepathy stream direction (a TpMediaStreamDirection).

Allowed values: <= 3

Default value: 3

The "farsight-conference" property

  "farsight-conference"      FsConference*         : Read / Write / Construct Only

The Farsight conference this stream will create streams within.

The "farsight-participant" property

  "farsight-participant"     FsParticipant*        : Read / Write / Construct Only

The Farsight participant this stream will create streams for.

The "farsight-session" property

  "farsight-session"         FsSession*            : Read

The Farsight session.

The "farsight-stream" property

  "farsight-stream"          FsStream*             : Read

The Farsight stream.

The "media-type" property

  "media-type"               guint                 : Read / Write / Construct Only

The Telepathy stream media type (as a TpStreamMediaType).

Allowed values: <= 1

Default value: 0

The "nat-properties" property

  "nat-properties"           gpointer              : Write / Construct Only

A pointer to a TfNatProperties structure detailing which NAT traversal method and parameters to use for this stream.

The "proxy" property

  "proxy"                    TpMediaStreamHandler*  : Read / Write / Construct Only

The stream handler proxy which this stream interacts with.

The "resources" property

  "resources"                guint                 : Read

The resources held by a TpMediaStreamDirection.

Allowed values: <= 3

Default value: 0

The "sink-pad" property

  "sink-pad"                 GstPad*               : Read

This sink pad that data has to be sent.

The "stream-id" property

  "stream-id"                guint                 : Read / Write / Construct Only

A number identifying this stream within its channel.

Default value: 0

The "tos" property

  "tos"                      guint                 : Read / Write

The IP Type of Service to set on sent packets.

Allowed values: <= 255

Default value: 0

Signal Details

The "closed" signal

void                user_function                      (TfStream *stream,
                                                        gpointer  user_data)      : Run Last

This signal is emitted when the Close() signal is received from the connection manager.

stream : the stream that has been closed
user_data : user data set when the signal handler was connected.

The "error" signal

void                user_function                      (TfStream *stream,
                                                        gpointer  user_data)      : Run Last

This signal is emitted when there is an error on this stream

stream : the stream that has been errored
user_data : user data set when the signal handler was connected.

The "free-resource" signal

void                user_function                      (TfStream *stream,
                                                        guint     direction,
                                                        gpointer  user_data)      : Run Last

Emitted when the stream no longer needs a resource allocated from "request-resource" and it can be freed.

stream : the stream for which resources can be freed
direction : The direction for which this resource is freed (as a TpMediaDirection
user_data : user data set when the signal handler was connected.

The "request-resource" signal

gboolean            user_function                      (TfStream *stream,
                                                        guint     direction,
                                                        gpointer  user_data)      : Run Last

This signal is emitted when the connection manager ask to send or receive media. For example, this can be used allocated an X window or open a camera. The resouces can later be freed on "free-resource"

stream : the stream requesting the resources
direction : The direction for which this resource is requested (as a TpMediaDirection
user_data : user data set when the signal handler was connected.
Returns : TRUE if the resources requested could be allocated or FALSE otherwise

The "src-pad-added" signal

void                user_function                      (TfStream *stream,
                                                        GstPad   *pad,
                                                        FsCodec  *codec,
                                                        gpointer  user_data)      : Run Last

This is emitted when a new src pad comes out. The user must connect this pad to his pipeline.

stream : the stream which has a new pad
pad : The new src pad
codec : the codec for which data is coming out
user_data : user data set when the signal handler was connected.
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