[Live-devel] Problem in changing the RTSP URI

[Ross Finlayson]

>My doubt is that, when the streaming is happening, and if
>shutdown is siganlled by another thread (other than the one
>which is actually waiting on select call), will this cause
>any problem?

It depends what you mean by "shutdown is signalled by another 
thread".  Remember that code that uses the "LIVE.COM Streaming Media" 
libraries must be run as a single-threaded event loop (see 
<http://www.live.com/liveMedia/faq.html#threads>).  Therefore, only the 
(single) thread that calls "doEventLoop()" can actually do the 'shutdown' 
(i.e., by calling "Medium::close()" on objects, etc.).

The best way to do this is using the "watchVariable" parameter to 
"doEventLoop()" (see 
<http://www.live.com/liveMedia/faq.html#exiting-event-loop>).  E.g.,

         char watchVariable;
         while (1) {
                 <do some initialization>
                 watchVariable = 0;
                 scheduler->doEventLoop(&watchVariable);
                 <clean up>
         }

and then, in a second thread, you can signal the event loop to do the clean 
up by
         watchVariable = 1;

If you're doing this, but you're still seeing a crash, then you may be 
reclaiming objects in the wrong order.  (In general, you should reclaim 
objects in the reverse order from the order in which they were created - 
i.e., LIFO.)


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