On Fri, Dec 16, 2011 at 09:05:31AM -0500, Justin Ruggles wrote:
> On 12/16/2011 07:36 AM, Martin Storsjö wrote:
> 
> > Should this be handled generically in avcodec_decode_audio4 like
> > this, or only within the decode function for those codecs that
> > are ready to handle a change. The latter variant avoids issues
> > if there are codecs that screw up if e.g. sample_rate/channels
> > are changed on the fly, but means a call to the parameter change
> > function has to be added to all functions. Currently, this is
> > tested to work fine with nellymoser.
> > 
> > A third approach would be to add a codec flag for this, and only
> > apply the side data packet for those codecs.
> 
> 
> I like the idea of adding a codec capability. At least until we know
> that all decoders will be able to handle such mid-stream parameter
> changes without blowing up.

What's the difference from what we have now? Parameter changes can still
happen mid-stream and decoder still have to deal with it even without knowing.
The advantage of side data is that it can be ignored by unsuspecting decoder.
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