Re: [linux-audio-dev] best option for audiovisual synchrony

Hi,

Thank you all for the great feedback. It seems there are more options
available than I imagined. I'll look into your suggestions. I might come
back to you people with more to the point technical questions.

Thanks again for the help,

Simon Barthelmé

Lee Revell wrote:
> On Sun, 2006-10-22 at 15:00 +0200, Dominique Michel wrote:
>
>> Le Sat, 21 Oct 2006 11:59:14 -0400,
>>
>>> I think any Linux system with DRI can do this. Check /proc/interrupts -
>>> if your video card is listed, then you should have vsync interrupt
>>> capability.
>>>
>>> Lee
>>>
>>>
>> I have a nvidia card in my box. If I use the nvidia driver, I get it
>> in /proc/interrupts, but if I use the nv driver, the card don't use an IRQ.
>> I am not a gamer, and for me, the nv driver is just better because I can use
>> this IRQ for another hardware and get a better IRQ setup with my rt kernel and
>> that already at the PIC level.
>>
>> If compatibility is a concern, I think at it will be better to use a mechanism
>> provided by X that will exist on every single linux box, as to rely on a
>> hardware mechanism that will not be found on every system.
>>
>>
>
> Interrupts are a hardware mechanism by definition. X cannot provide one
> if the hardware lacks this feature (or the driver fails to enable it)
>
> Lee
>
>
>

-- 
Simon Barthelmé
PhD Student
Laboratoire de Psychologie de la Perception
CNRS/Université Paris V
lpp.psycho.univ-paris5.fr