Re: [LAD] DAB Audio frame decoder

From: Stefan Kost <ensonic@email-addr-hidden-obscura.de>
Date: Mon Nov 03 2008 - 22:57:31 EET

hi,

smprocess schrieb:
> Hi Fred,
>
> Yes, when I said 'DAB', I'm talking about Eureka-147, not DAB+ which defines
> HE-AAC.
> I know that DAB is obsolete, but I would like to use MPEG to create a 'audio
> DAB kit' to my students courses.
> However, a library allowing to decode all DAB audio formats would be
> welcome.
> The audio stream that I would like to decode is composed of MPEG frame + PAD
> (ancillary data). Of course, I could separate both parts and decode them in
> two process.
> Because I didn't find API to do this, I think that I will do it my self.

What about using GStreamer. There is mpegaudioparse element (mpeg audio
bitstream parser), Not sure about auxillary data. At least you'll get a
framework and can plugin in the part that is not there yet :)

Stefan

>
> Regards,
>
> Sylvain
>
>
> ----- Original Message -----
> From: "Fred Gleason" <fredg@email-addr-hidden>
> To: <linux-audio-dev@email-addr-hidden>;
> <linux-audio-user@email-addr-hidden>
> Sent: Wednesday, October 29, 2008 12:43 AM
> Subject: Re: [LAD] DAB Audio frame decoder
>
>
>> On Tuesday 28 October 2008 02:11:12 pm smprocess wrote:
>>> I would like to know if somebody of you knows a C/C++ library allowing to
>>> decode DAB audio frame (commercial or not), specially to extract PAD
>>> components.
>> When you say 'DAB', I take it you're talking about Eureka-147 datastreams,
>> not
>> the 'HD Radio' system in use in the USA? ('Cause HD Radio is not MPEG).
>>
>>
>>> For your information, I'm working with the FxEngine Framework
>>> (http://www.smprocess.com) on DAB MPEG 1 layer II audio format.
>> Are these elemental streams? If so, then I assume the PAD is in the
>> ancillary
>> channel?
>>
>> Cheers!
>>
>>
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>> | Frederick F. Gleason, Jr. | Chief Developer
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Received on Tue Nov 4 00:15:03 2008

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