Re: SetAvTransportUri

[Jens Georg <mail jensge org>]

On Mi, 2011-09-07 at 22:30 +0200, andrea zambon wrote:

Re-including Mailinglist.

> I experimented with gupnp-universal-cp.
> I was able to display a JPEG image, set volume.... etc....
> I'm trying to hear an mp3 file with gupnp-universal-cp on my TV.
> I take as an example the parameters of Rygel.
> 
> These are the parameters I have used and modified, the file is located
> in the apache server:
> 
> http://192.168.1.105:80/mymusic.mp3
> 
> <DIDL-Lite xmlns:dc="http://purl.org/dc/elements/1.1/";
> xmlns="urn:schemas-upnp-org:metadata-1-0/DIDL-Lite/"
> xmlns:upnp="urn:schemas-upnp-org:metadata-1-0/upnp/"
> xmlns:dlna="urn:schemas-dlna-org:metadata-1-0/"
> xmlns:arib="urn:schemas-arib-or-jp:elements-1-0/"
> xmlns:av="urn:schemas-sony-com:av">
> <item id="3d6512c4273fe96fbdf471e7d1d3f8be"
> parentID="virtual-container:d62b16c1951debeb97d8df3e8aac458e"
> restricted="0"><dc:title>mymusic</dc:title><upnp:class>object.item.audioItem.musicTrack</upnp:class><dc:date>2009-01-01</dc:date><res size="4336511" protocolInfo="http-get:*:audio/mpeg:DLNA.ORG_PN=MP3;DLNA.ORG_OP=01;DLNA.ORG_FLAGS=01700000000000000000000000000000" duration="0:03:36.000" bitrate="16841641">http://192.168.1.105:80/mymusic.mp3</res></item></DIDL-Lite>
> 
> gupnp-universal cp-returns error 714.

I suppose you call SetAVTransportUri? Error 714 means

714 Illegal MIME-type The specified resource has a MIME-type which is
not supported by the AVTransport service. (cf.
http://upnp.org/specs/av/UPnP-av-AVTransport-v2-Service.pdf page 61,
Table 2-31)

You will want to read-up the documents available at
http://upnp.org/specs/av/av2/ (maybe av1 but av2 includes av1)

> 
> If the apache server is not correct, what can I use?
> Or how the transaction should be done?

In theory the apache server should be sufficient, expecially if you
implement what DLNA calles +PU+ where you're inventing the meta-data
passed yourself, but ...

> Where can I find documentation about upnp http connection
> specifications?

... the problem is that UPnP doesn't mandate those headers. You're most
likely pushing to a DLNA device that expects those. And the DLNA
documentation is not freely available.

> 
> I'd like to build a simple application with Vala.

You might want to have a look at gupnp-av-cp which does this in
conjunction with a UPnP/DLNA MediaSever.

> 
> Thanks again.
> 
> 2011/9/7 Jens Georg <mail jensge org>
>         
>         On Mi, 2011-09-07 at 13:43 +0200, andrea zambon wrote:
>         > I'm trying to develop an application that displays images on
>         my TV or
>         > music.
>         > I used SetAvTransportUri  to set the input of a jpeg and it
>         works
>         > well. The image is located on a local server apache.
>         > But when I try to set an mp3, I get error 714.
>         > The apache server is suitable for sharing multimedia files
>         with upnp?
>         
>         
>         More context please. On which application/Renderer are you
>         calling
>         SetAvTransportUri?
>         
>         The apache server misses some additional headers that the
>         renderer might
>         require.
>         
>         
>