Re: [Openh323-devel] Video size in OPAL

[Hannes Friederich <hannesf@xxxxxxxxxx>]

Hi,

One problem is that currently, the media options aren't propagated to  
the other endpoint, which could inspect them to signal the correct  
media format description to the remote endpoint. The other problem  
probably is that the code responsible for signaling the media  
description (H.323 capabilities or SIP SDP) most probably don't  
consider non-default values.

For problem one, there is a solution in the MediaTypeBranch of OPAL,  
that might be added to the next stable release of OPAL. It makes sure  
that custom media format options are correctly propagated to the  
other connection/endpoint. If you use H.323, you may consider writing  
a custom H.323 capability for your media format, that correctly reads  
and signals the media format options.

I hope this helps

Hannes

On 6. Aug 2007, at 15:39, damd@xxxxxxx wrote:

>
> hi,
>
> I'd like to set a non standard video size in OPAL. How should I do  
> this ?
>
> I've tried to do it this way, but it doesn't work:
>
> OpalMediaFormatList MySoundEndPoint::GetMediaFormats() const
> {
>   OpalMediaFormatList formats;
>   OpalMediaFormat curFormat;
>
>   formats+=OpalPCM16;
>
>   curFormat = OpalYUV420P;
>   curFormat.SetOptionInteger(OpalVideoFormat::FrameWidthOption, 640);
>   curFormat.SetOptionInteger(OpalVideoFormat::FrameHeightOption, 480);
>
>   formats += curFormat;
>
>   curFormat = OpalRGB24;
>   curFormat.SetOptionInteger(OpalVideoFormat::FrameWidthOption, 640);
>   curFormat.SetOptionInteger(OpalVideoFormat::FrameHeightOption, 480);
>
>   formats += curFormat;
>
>   return formats;
> }
>
> Any ideas ??
>
> Thanks in advance,
>
> Damien
>
>
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