[Qemu-devel] Re: [PATCH 45/46] Remove AUDIO_DRIVERS define

[Jan Kiszka <jan.kiszka@web.de>]

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Avi Kivity wrote:
> On 07/26/2009 04:41 PM, Juan Quintela wrote:
>> The order in audio_drivers is important, that means you can have a
>> different default sound driver.
>>
>> After some thinking, my current plan is exporting audio_drv_list
>> to the Makefile, and then generating something similar to AUDIO_DRIVERS.
>>
>> Notice that the "ordering" problems not only happens with sound drivers,
>> we have the same problems with graphics console, which one is the
>> default one?  It depends on what you have configured, and changing the
>> default order is far from trivial.
>>    
> 
> You could pass a goodness value to the registration function, reflecting
> what we think the best driver is.  Then at runtime select the best
> driver that is supported on the system.
> 

I think the easiest way is to forward the sorted driver list as string
to the audio layer and let it be processed there. Given such an
extension, we could also allow passing a list of drivers via QEMU_AUDIO_DRV.

BTW, I still wonder why we have OSS and only OSS as the default driver
list under Linux. Most distros I came across kicked it out or pushed it
to the end of their list (as it requires exclusive access). Would be a
chance to improve the default. At least we should extend the list by all
available drivers.

Jan


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