[mythtv] [PATCH] small oss define patch (prelude to another ALSA patch)

[Ed Wildgoose]

David George wrote:

> Just a small patch to move the OSS define into libs/libmyth like the 
> other audio services.  No sense in passing the -DUSING_OSS to 
> everything when it is only needed in libmyth.  Also changes printf's 
> in audiooutput.cpp to VERBOSE VB_IMPORTANT.
>
> This is a prelude to a large ALSA audio update which improves support 
> for newer ALSA versions.  Currently MythTV works best with ALSA 
> 1.0.5a.  Anything newer (and older) has not done well for me (and 
> others).  I am currently testing with CVS ALSA.  As soon as I finish 
> testing I will retest with 1.0.5a to make sure it still works also.
>
> The other major new feature of the upcoming ALSA patch is volume 
> control support.


Can I swap patches with you first!  I have made some big structural 
changes to the Audio code to introduce a new concrete base class which 
implements the basic algorithm that all the other concrete classes 
inherit from.  This now means that the audio code is just a couple of 
short functions to override instead of them all being copies of the one 
big base module!

It's all tested with OSS, Alsa, and Jack outputs (I haven't done the 
other libraries yet, but they should be easy to convert).

Future plans were to also put in the event code from the Music player 
library so that it can simply use the main audio libraries directly 
instead of having it's own code.  Then to introduce volume changing code 
into each audio output libray, so that the main volume change code can 
do volume control no matter which output library is installed - sounds 
like you have this bit covered already?

I will post a patch with the current work shortly

Ed W