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Thread: HELIX_FEATURE_SYSTEM_EXTERNAL_TIMER and 1_5_0
HELIX_FEATURE_SYSTEM_EXTERNAL_TIMER and 1_5_0
user name
 2006-10-19 15:18:44 
Hi Milko,

I would like to use a external clock on 1_5_0.

How could I do that?

Thanks again,
Edgard


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HELIX_FEATURE_SYSTEM_EXTERNAL_TIMER and 1_5_0
user name
 2006-10-19 15:37:47 
Override the audio device with your own implementation.

At 08:18 AM 10/19/2006, Edgard Lima wrote:

>Hi Milko,
>
>I would like to use a external clock on 1_5_0.
>
>How could I do that?
>
>Thanks again,
>Edgard



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HELIX_FEATURE_SYSTEM_EXTERNAL_TIMER and 1_5_0
user name
 2006-10-19 15:57:07 
So, I do NOT need to define
HELIX_FEATURE_SYSTEM_EXTERNAL_TIMER.

I just need to rewrite UINT64 
CAudioOutLinux::_GetBytesActualyPlayed(void) const

is all this right?

thanks,
Edgard

Milko Boic wrote:
>
> Override the audio device with your own implementation.
>
> At 08:18 AM 10/19/2006, Edgard Lima wrote:
>
>> Hi Milko,
>>
>> I would like to use a external clock on 1_5_0.
>>
>> How could I do that?
>>
>> Thanks again,
>> Edgard
>
>
>


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HELIX_FEATURE_SYSTEM_EXTERNAL_TIMER and 1_5_0
user name
 2006-10-19 15:55:03 
On 150Cay overriding the audio device is your only choice.
However, on the HEAD we have IHXClockSource support.

At a high level, here's how it works:

 - Some type of plugin (renderer or other) implements
IHXClockSource
 - Upon initialization, that plugin QI's the IHXAudioPlayer
   for IHXClockSourceManager and registers itself as a clock
source.
 - Currently, when it's time to play, if there are no
regular Helix
   audio streams, then the audio player will use the
registered
   IHXClockSource as the clock.

However, as you can tell, we currently have the limitation
that
if there are Helix audio services audio streams present,
they
will always take priority for the clock.

Eric

=============================================
Eric Hyche (ehychereal.com)
Technical Lead
RealNetworks, Inc.  

> -----Original Message-----
> From: helix-client-dev-bounceshelixcommunity.org 
> [mailto:helix-client-dev-bounceshelixcommunity.org] On 
> Behalf Of Milko Boic
> Sent: Thursday, October 19, 2006 11:38 AM
> To: Edgard Lima; Helix-client-devhelixcommunity.org
> Subject: [Helix-client-dev] Re: 
> HELIX_FEATURE_SYSTEM_EXTERNAL_TIMER and 1_5_0
> 
> 
> Override the audio device with your own implementation.
> 
> At 08:18 AM 10/19/2006, Edgard Lima wrote:
> 
> >Hi Milko,
> >
> >I would like to use a external clock on 1_5_0.
> >
> >How could I do that?
> >
> >Thanks again,
> >Edgard
> 
> 
> 
> _______________________________________________
> Helix-client-dev mailing list
> Helix-client-devhelixcommunity.org
> http://lists.helixcommunity.org/mailman/listinf
o/helix-client-dev
> 


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HELIX_FEATURE_SYSTEM_EXTERNAL_TIMER and 1_5_0
user name
 2006-10-19 16:05:23 

  


  

    
No. 

HELIX_FEATURE_SYSTEM_EXTERNAL_TIMER enables application to provide
general system timing used for measuring passage of time. ; This was
enabled to allow some application to improve performance by reducing the
number of times gettimeofday is called.  This feature simply allows
the application to populate a global variable with gettimeofday
equivalent and Helix client reads the value of the global when time is
needed.


To override the time-line in cayenne, you need to use
IHXAudioDeviceManagee method to
replace the audio device:

   

/**********************************************************************

     *  Method:

    ; *     
IHXAudioDeviceManager::Replace

    ; *  Purpose:

  ;   *  This is used to replace the default
implementation of the audio

     *  device by the given audio device
interface. 

     */

   
STDMETHOD(Replace)   ;     
(THIS_

        ;
     ;   
    IHXAudioDevice*   ;
/*IN*/
 pAudioDevice) PURE;




Milko


At 08:57 AM 10/19/2006, Edgard Lima wrote:



So, I do NOT need to define
HELIX_FEATURE_SYSTEM_EXTERNAL_TIMER.


I just need to rewrite UINT64
CAudioOutLinux::_GetBytesActualyPlayed(void) const


is all this right?


thanks,

Edgard


Milko Boic wrote:




Override the audio device with your own implementation.


At 08:18 AM 10/19/2006, Edgard Lima wrote:



Hi Milko,


I would like to use a external clock on 1_5_0.


How could I do that?


Thanks again,

Edgard





  

  
  
   
     
    






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