[Ffmpeg-devel] [PATCH] updated LGPL AC-3 decoder

Baptiste Coudurier baptiste.coudurier
Thu Mar 8 11:00:30 CET 2007


Hi

Justin Ruggles wrote:
> Michael Niedermayer wrote:
>> [...]
>>
>> could you split the whole downmix out into its own patch and file and make it
>> indenpandant of AC3? so it could be used by other similar codecs?
>>
> 
> I can if you'd like...but the downmixing is based strictly on AC-3
> channel order, so I don't know how useful it would be.  An alternative
> might be to define a standard FFmpeg channel order and use an array of
> pointers so they could quickly be shuffled around.  But that would be
> heading down the road toward a more complex/complete channel reordering
> and mixing framework as discussed in other threads.
> 

If it's not too hard/boring please do, it could be used right now for
other codecs (aac, pcm, vorbis) even if channel order is wrong.

Im thinking about ffplay which actually have no downsampling feature,
and you cannot play more than 2 channels, except dts/ac3)

-- 
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