[Live-devel] rtcp receiver reports

[Ross Finlayson]

>I am streaming(unicast) mp3 file using testMP3streamer and receiving with 
>playRTPMPEG. What I want to do is changing the mp3 quality, according to 
>link quality. I thougt this can be achieved by receiver reports.
[...]
>
>If anybody can help me about how to do this?


Kerim,

Look at"liveMedia/include/.RTPSink.hh" - in particular, the definitions of 
"RTPTransmissionStatsDB" and "RTPTransmissionStatsDB".  To get statistics 
from receivers, you would do the following:
1/ Call "transmissionStatsDB()" on your RTPSink, to get the stats database
2/ Create a "RTPTransmissionStatsDB::Iterator" to iterate through the stats 
records.  (Each record represents one recipient.  Because you are sending 
via unicast, you should see only one such recipient.)
3/ Each iteration will give you a "RTPTransmissionStats" structure, which 
you can examine.

See also the source code, and the RTP/RTCP specification.


	Ross Finlayson
	LIVE.COM
	<http://www.live.com/>