Re: [Linphone-developers] rtp_session_recv_with_ts and buffer length

[Simon Morlat]

Hi,

Are you incrementing the timestamp by 160 each time ?
If you want to get the exact buffer for the packet, you can use the 
rtp_session_recvm_with_ts(). It returns you the rtp packet:

while(1){       
        mblk_t *mp=rtp_session_recvm_with_ts(session, ts);
        if (mp!=NULL){
                //the rtp header is between mp->b_rptr and mp->b_wptr
                //the rtp payload is between mp->b_cont->b_rptr and 
mp->b_cont->b_wptr
                mblk_t *payload=mp->b_cont;
                int len=payload->b_wptr-payload->b_rptr;
                output_to_sound_device(payload->b_rptr,len);
        }
        ts+=160;
}

Simon

Le Jeudi 16 Février 2006 23:25, Nicholas J Humfrey a écrit :
> Hi,
>
> I have been calling rtp_session_recv_with_ts (with scheduling and
> blocking mode turned on) with a buffer bigger than I am actually
> expecting data for.  eg (passing a 1024 byte buffer, when expecting
> 160 PCMU bytes back).
>
> I was expecting to only get enough data for the timestamp I was
> asking for, but instead it seems to be giving me more data than I was
> expecting and then later getting confused that it doesn't have enough
> data for me and dropping out.
>
> Is this a bug or a feature?  I was hoping to only have to think about
> timestamps and like oRTP work out how much data there is available
> for that timestamp....
>
>
> Thanks,
>
> nick.
>
>
>
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