[Live-devel] Patch to RTSPClient to support Kasenna RTSP

[Derk-Jan Hartman]

I'm noticing you implemented this slightly different than I had 
anticipated. In my understanding it is possible to set an option on the 
RTSPClient object when you create it. This eliminates the need for 
changing the DescribeURL method etc, which would keep the API 
unchanged.

DJ

On 19 okt 2004, at 18:27, Dermot McGahon wrote:

> Hi Ross,
>
> Please find attached, a patch, mostly against RTSPClient.cpp,
> which allows for both standard RTSP/RTP, and RTSP Kasenna/RAW
> UDP when specified.
>
> After much discussion with Derk-Jan Hartman, we now understand
> the Kasenna setup quite well and have a plan to support it for
> vlc. For MPEG-4, the video server takes standard RTSP and responds
> with SDP. For MPEG-2 it is an older implementation, but as MPEG-2
> is widespread, it would be good to have support for this.
>
> The approach DJ is taking is to parse the sgimb metafiles which
> are available from http:// links on the server. They tell whether
> the content is MPEG-2 or MPEG-4.
>
> A new command line argument has been added to vlc (--rtsp-kasenna)
> which can also be used to differentiate between the two dialects.
>
> When a non-standard RTSP MRL is detected or specified on the
> command line, an extra parameter is passed in to modify the
> behaviour of RTSPClient::describeURL and RTSPClient::setupMedia
> Subsession.
>
> The x-rtsp-mh returned from the video server in the case of MPEG-2
> is translated into a simple SDP.
>
> I have re-written my original patch, which was used with mplayer,
> but which used #define SUPPORT_KASENNA_RTSP, and not ideally had
> the effect of making the library only use the Kasenna style RTSP.
>
> If you accept this patch, both standard and Kasenna RTSP will be
> possible.
>
>
>
> Warm Regards,
>
> Dermot McGahon.
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---
Universiteit Twente
Derk-Jan Hartman (d.hartman at student.utwente dot nl)
http://home.student.utwente.nl/d.hartman