|
||
RRtpSendPacket
allows you to set the following fields for
an RTP packet.
SetMarker()
: Sets or unsets the marker bit.
SetPayloadType()
: Sets the default payload type this is
usually set before creating a new packet.
SetTimeStamp()
: Sets the sampling instant of first octet
in the RTP data packet (also RTCP packet).
SetFlags()
: Sets the first 32 bits of the packet header.
You can retrieve the following from an RTP packet:
WritePayload()
: Gets the descriptor to which the data can
be written.
RRtpSendSource
allows you to create a new RTP packet.
NewSendPacketL
and NewSendPacketLC
create a new send
RTP packet. These functions return a handle to an RRtpSendPacket
object.
RRtpSendPacket NewSendPacketL(TInt aPayloadSize=0, TInt aHeaderExtensionSize=KRtpNoExtension);
Set the default payload type and payload size before you create the new
send packet using SetPayloadType()
and
SetDefaultPayloadSize()
respectively.
Set the header extension size to multiples of 4-byte words this means
the fixed header must be followed by exactly one header extension. The default
value is KRtpNoExtension
. 0 is an acceptable value.
RRtpSendSource
allows you to set any of the following for
an RTP packet to be sent:
SetAlignment
: Aligns the header data to multiples of the
set padding value. The values can range within 1-255. 1 is the default value,
which means not padded.
SetPayloadSize
: Sets the default payload size for the RTP
packet that is to be sent. This is usually set before creating a new packet.
SetPayloadType
: Sets the default payload type for the RTP
packet that is to be sent. This is usually set before creating a new packet.
Call ByeL
to send the BYE packet to indicate that one or
more sources are no longer active (e.g. when a participant wishes to leave).
You can stop sending a packet even after making a send request. Call
RRtpSendSource::Cancel()
to cancel the outstanding send request on
the send stream.
Call RRtpSendPacket::Send()
to send the RTP packet. The
packet is considered to be sent only when an ERtpSendSucceeded
event is received from the send stream. If a failure occurs, an
ERtpSendFailed
event is received.
Once the packet has been sent, call
RRtpSendPacket::Close()
to close the RTP packet.
Call RRtpSendSource::Close()
to close the send stream. The
send stream cannot be closed if an event is currently being handled by a call
back function.