[Live-devel] media subsessions and names

[Derk-Jan Hartman]

On 16 sep 2004, at 17:07, Valery Kazakov wrote:

> Good afternoon.
> On client side I work with live's stack and use "livedotcom.cpp" from
> VLC.
> I wanted to open four windows for all video streams and use their names
> as windows captions.
> "MediaSubsessionIterator" made array of "MediaSubsession" objects,
> but sequence of the objects is not strictly corresponds to names list
> from the SDP.
> How I can define accordance between media subsessions
> and names from SDP?
> Thanks, Valery.

So you want multiple video streams from one SDP open together, in a 
predefined sequence?

In that case, you are out of luck with VLC, it's a threaded system, 
which basically means first in first out, however, when a stream is too 
'early', it can be delayed (waiting for window i.e.) and another stream 
can open earlier. not much you can do about that, neither do i very 
much see the use for it.

dj

>
> В Срд, 15.09.2004, в 22:29, Ross Finlayson пишет:
>> At 04:38 AM 9/15/04, you wrote:
>>> Good afternoon.
>>> I had created RTSPServer and one ServerMediaSession object with four
>>> ServerMediaSubsession objects for video streams.
>>> On the client side I got names of video streams from the SDP
>>> (for example "track1", "track2", etc.).
>>> On the client side sequence of initialised MediaSubsessions can 
>>> differ
>>> ("track2", "track1", "track3", etc.).
>>
>> Valery,
>>
>> I'm not sure I follow this.  If you look at the code for the functions
>> "ServerMediaSession::addSubsession()" and
>> "ServerMediaSession::generateSDPDescription()", you'll see that the 
>> SDP for
>> each "ServerMediaSubsession" is listed in the order that it was 
>> added, and
>> that each is given a consecutive track number.
>>
>> If that's not the case, then please let me know where I should fix 
>> the code.
>>
>>
>> 	Ross Finlayson
>> 	LIVE.COM
>> 	<http://www.live.com/>
>>
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>> live-devel at lists.live.com
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>>
>
>
>
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>
---
Universiteit Twente
Derk-Jan Hartman (d.hartman at student.utwente dot nl)
http://home.student.utwente.nl/d.hartman