[Live-devel] interactive support

[adrian hornsby]

Hey thanks so much Ross.
You readly are a great help !
adrian

--- Ross Finlayson <finlayson at live555.com> wrote:

> 
> >Sorry if this was asked before, I checked the
> archive
> >without success, but I would like to know if
> LiveMedia
> >library has already support for interactive control
> ?
> >By this I mean I want to be able to start a
> function
> >anytime during the runtime of my program by
> pressing a
> >key on the keyboard.
> 
> Yes, there are two possible ways to do this.
> 
> The most general (but most complicated) way is to
> write a new 
> "TaskScheduler" subclass, that implements a new
> event loop, and use 
> this instead of "BasicTaskScheduler".
> 
> A much simpler (but less general) way is to use the
> "watchVariable" 
> feature of "TaskScheduler::doEventLoop()".  E,g.
> 
> replace
>          env->taskScheduler().doEventLoop();
> with
>          char watchVariable; // make this a global
> variable
>          ...
>          while (1) {
>                  watchVariable = 0;
>                 
> env->taskScheduler().doEventLoop(&watchVariable);
>                  switch (watchVariable) {
>                          case 'a': {
>                                  // handle the
> pressing of key 'a'
>                                  break;
>                          }
>                          case 'b': {
>                                  // hande the
> pressing of key 'b'
>                                  break;
>                          }
>                          // etc.
>                  }
>          }
> 
> Then, elsewhere in your program, do
>          if (/* key 'a' is pressed*/) {
>                  watchVariable = 'a';
>          }
> etc.
> 
> 
> 	Ross Finlayson
> 	Live Networks, Inc. (LIVE555.COM)
> 	<http://www.live555.com/>
> 
> _______________________________________________
> live-devel mailing list
> live-devel at lists.live555.com
> http://lists.live555.com/mailman/listinfo/live-devel
> 



		
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