Re: Enable FFmpeg AC3 / DTS decoders

Hello,

On su, 2014-06-08 at 20:38 -0400, Brad Smith wrote:
> Here is a diff to enable the AC3 / DTS decoders via FFmpeg.
> 
> 
> diff -r a974f181df3f src/combined/ffmpeg/xine_audio.list
> --- a/src/combined/ffmpeg/xine_audio.list	Fri Jun 06 21:12:20 2014 +0200
> +++ b/src/combined/ffmpeg/xine_audio.list	Sun Jun 08 20:03:38 2014 -0400
> @@ -41,15 +41,16 @@
>  WAVPACK			WAVPACK			WavPack
>  AMR_NB			AMR_NB			AMR narrow band
>  AMR_WB			AMR_WB			AMR wide band
> +A52			AC3			AC-3
>  EAC3			EAC3			E-AC-3
>  AAC			AAC			MPEG4
>  AAC_LATM		AAC_LATM		AAC LATM
>  ADPCM_G726		ADPCM_G726		ADPCM G726
>  QCLP			QCELP			QualComm Purevoice
>  OPUS			OPUS			Opus Audio
> +DTS			DTS			DTS
>  
>  # disabled codecs (ref. configure.ac)
> -!			AC3
>  !			ADPCM_ADX
>  !			ADPCM_G726
>  !			DSICINAUDIO

This also changes default decoders for AC3/DTS. Priority of ff_audio
decoder is higher (7) than current libdts (1) / liba52 (5) decoders.
Maybe we should also increase those priorities ?

I don't know if AC3/DTS passthru works with ffmpeg decoder.

Is there some advantage in preferring ffmpeg instead of liba52/libdts ? 
Downmixing support ? Maybe that could be moved to audio out so that all
decoders could benefit from it :)


- Petri



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