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rtpbin: add some docs about AUX elements

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Wim Taymans 2013-12-31 13:16:46 +01:00
parent 3e83e6a33d
commit bb2d37b11d
1 changed files with 12 additions and 0 deletions
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gst/rtpmanager/gstrtpbin.c
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@ -73,6 +73,18 @@
* be placed before the #GstRtpSession element, thus they must support SSRC demuxing * be placed before the #GstRtpSession element, thus they must support SSRC demuxing
* internally. * internally.
* *
* #GstRtpBin has signals (#GstRtpBin::request-aux-sender and
* #GstRtpBin::request-aux-receiver to dynamically request an element that can be
* used to create or merge additional RTP streams. AUX elements are needed to
* implement FEC or retransmission (such as RFC 4588). An AUX sender must have one
* sink_\%u pad that matches the sessionid in the signal and it should have 1 or
* more src_\%u pads. For each src_%\u pad, a session will be made (if needed)
* and the pad will be linked to the session send_rtp_sink pad. Each session will
* then expose its source pad ad send_rtp_src_\%u on #GstRtpBin.
* An AUX receiver has 1 src_\%u pad that much match the sessionid in the signal
* and 1 or more sink_\%u pads. A session will be made for each sink_\%u pad
* when the corresponding recv_rtp_sink_\%u pad is requested on #GstRtpBin.
*
* <refsect2> * <refsect2>
* <title>Example pipelines</title> * <title>Example pipelines</title>
* |[ * |[