Re: Streaming to DLNA devices

[Jens Georg <mail jensge org>]

Hi, sorry, somehow I missed this mail.

This sounds as if MPD generates a stream with embedded ICY meta-data and
not a plain MP3 stream.

> Hi Jens,
>
>
> as we previously talked about, I modified rendererconsole.py to do my
> work, and I integrated discovery and player creation into SBS aka.
> LMS. 
>
>
> Then I discovered the hard way that only software renderers will
> accept the stream I created with MPD.... dialog goes like this; 101 is
> an Onkyo receiver and 113 runs MPD httpd stream that I can connect and
> play using exactly the same method by XBMC built-in renderer, VLC, or
> even from Onkyo receiver when I define it as a Internet "radio"
> "favourite" - but not when pushing it as UPnP stream:
>
> 1) 
> 216    7.696159    192.168.1.101    192.168.1.113    TCP    229
> 57194 > 8767 [PSH, ACK] Seq=1 Ack=2 Win=5840 Len=163 TSval=177510163
> TSecr=446219
> 8`w    D>Et@@Abeqj"?{#h
>
> GET /mpd.mp3 HTTP/1.1
> Range: bytes=0-
> transferMode.dlna.org: Streaming
> Host: 192.168.1.113:8767
> User-Agent: Mediabolic-IMHTTP/1.8.225 UPNP/1.0 DLNADOC/1.50
>
> 2) 
> 217    7.696195    192.168.1.113    192.168.1.101    TCP    54    8767
> > 57194 [RST] Seq=2 Win=0 Len=0
> D>8`wE(@@qe"?j#P`
>
>
>
> And in response from 192.168.1.101: (extracted)
> TransportStatus
> val="ERROR_OCCURRED"/><CurrentTransportActions 
>
> ...then...
> <UPnPError
>   xmlns="urn:schemas-upnp-org:control-1-0"><errorCode>716</errorCode>
>  <errorDescription>Resource not found</errorDescription></UPnPError>
>
>
>
> Same dialog with Samsung TV
>
>
>
> Long story short - does anyone know of a method of creating a UPnP
> compliant stream that responds in a way it should respond? I thought
> MPD does that as I found a patch discussed for this purpose when using
> FLAC, but mow looking at the code it seems to be a quick hack for a
> particular device ...
>
>
> Please note, I'm not looking for a UPnP server - I just need to create
> an mp3/flac/whatever stream from available raw PCM data stream
> (created by SBS/MPD/some player) that can be pushed to DLNA renderer
>
>
>
> Any help very much appreciated!
>
>
> Kind regards,
>
> Andrej
>
>
>
>
> Andrej Falout
> NZ: +64(21)02566825 AU: +61(45)1166010 US: +1(360)4880970 HR:
> +385(91)1520436
>
>
> On Thu, Jan 24, 2013 at 9:19 PM, Jens Georg <mail jensge org> wrote:
>         On Mi, 2013-01-23 at 14:17 +1300, Andrej Falout wrote:
>         
>         >         Yes. Call GetProtocolInfo on the Renderer's
>         ConnectionManager
>         >         service.
>         >         The sink variable of the response gives you a
>         comma-separated
>         >         list with
>         >         entries like http-get:*:audio/mpeg:DLNA.ORG_PN=MP3
>         or maybe a
>         >         * at the
>         >         end as well, I think dLeyna even preprocesses that
>         for you.
>         >         The only
>         >         uncompressed format DLNA supports is raw PCM
>         (profile LPCM),
>         >         but there
>         >         should be devices doing flac as well.
>         >
>         >
>         > I assume that due to 'http-get" in response this means that
>         this
>         > formats are supported for streaming? I have Onkio that is
>         advertised
>         > as supporting Flac, but when I bought it it turned out it is
>         > explicitly not supported for streaming, only for files :-(
>         
>         
>         No, http-get means both. Some devices (wrongly) assume that
>         they can
>         just download it. That's the subtle difference between UPnP
>         and DLNA,
>         you can't mark a stream as a stream in UPnP but you can in
>         DLNA. It
>         might even be that we don't do that correctly in Rygel. Is the
>         Onkio a
>         (certified) DLNA or just a UPnP-AV device?
>         
>         >
>         >
>         >
>         > Do I need to specify http-get somehow to GetProtocolInfo or
>         will this
>         > return both streaming supported formats and file supported
>         formats?
>         >
>         >
>         >
>         > Yes, Linn does streaming Flac (which is an compressed format
>         btw)
>         
>         
>         Ah, sorry, yes. somehow had compressed == lossy in my mind.
>         
>         The only real uncompressed formats are either WAV (rather
>         rare) or raw
>         PCM (16 bit big endian, signed, every certified DLNA device
>         has to
>         support that) with the sample rate and channels in the
>         content-type
>         (e.g. audio/L16;rate=44100;channels=2)
>         
>         >         Btw, to be really foolproof, all your uris should
>         have a file
>         >         extension
>         >         matching the file-type. Some (mainly cheap) devices
>         rely on
>         >         them.
>         >
>         >
>         > I suppose that means http://1.2.3.4:yyy:xxx.mp3 (I used only
>         > http://1.2.3.4:yyy in my tests) but what should I have as
>         xxx ?
>         
>         
>         assuming yyy is a port number, you could make it whatever you
>         want, just
>         call it http://1.2.3.4:7890/stream.mp3 or such.
>         
>         >
>         >
>         >
>         >         > 1) a command-line control point, which can push
>         URL to
>         >         renderer,
>         >         > stop/play/pause, change volume etc....
>         >
>         >
>         >         Not really.
>         >
>         >
>         > Bummer. That would help people trying to script things ..
>         like me :-)
>         > I think rendererconsole.py is about to have a surgery :-)
>         
>         
>         I think the dLeyna people would definitely like such
>         contribution.
>         
>         
>         >         > 2) A web browser control point. I am aware of
>         dLeyna Cloud,
>         >         but that
>         >         > is barely a prototype
>         >
>         >
>         >         There was something as a demo of gupnp-php, but I've
>         no idea
>         >         how usable
>         >         that is or what it's called.
>         >
>         >
>         > Could not find anything other then few examples that are
>         part of the
>         > gupnp-php code
>         
>         
>         Sorry, I don't remember what it was. Probably abandoned
>         anyway.
>         
>         > With all this DLNA devices all over the place, I am
>         fascinated that so
>         > few people want to use them :-) If I can find an app like
>         Ampache but
>         > from 21st century (eg HTML5) I might do something myself...
>         
>         
>         People tend to get frustrated easily with DLNA. I expect some
>         HTML5
>         controller stuff to pop up with the rise of it as a mobile
>         platform.
>         
>