[Asterisk-Dev] RFC3389 problem a little more info..

[Claus Futtrup]

Ok, I'll do that tomorrow.. The problem is easily reproduced.

Kind Regards
 
Claus Futtrup


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  ----- Original Message ----- 
  From: Rob Gagnon 
  To: Asterisk Developers Mailing List 
  Sent: Tuesday, September 07, 2004 8:17 PM
  Subject: Re: [Asterisk-Dev] RFC3389 problem a little more info..


  If you can reproduce this easily, try debug output of rtp->f.mallocd, and the value of the rtp->f.data pointer.  I would bet both are zero somehow when that function runs.
    ----- Original Message ----- 
    From: cf at internetit.dk 
    To: asterisk-dev at lists.digium.com 
    Sent: Tuesday, September 07, 2004 11:28 AM
    Subject: [Asterisk-Dev] RFC3389 problem a little more info..


    Hi Again,

    Added some more info in rtp.c, and this the problem:

    RFC3389: 5 bytes, level 0...
    RFC3389: Copying 5 bytes.... 
    Segmentation fault

    static struct ast_frame *process_rfc3389(struct ast_rtp *rtp, unsigned char *data, int len)
    {
            struct ast_frame *f = NULL;
            /* Convert comfort noise into audio with various codecs.  Unfortunately this doesn't
               totally help us out becuase we don't have an engine to keep it going and we are not
               guaranteed to have it every 20ms or anything */
    #if 1
            printf("RFC3389: %d bytes, level %d...\n", len, rtp->lastrxformat);
    #endif  
            if (!(rtp->flags & FLAG_3389_WARNING)) {
                    ast_log(LOG_NOTICE, "RFC3389 support incomplete.  Turn off on client if possible\n");
                    rtp->flags |= FLAG_3389_WARNING;
            }
            /* Must have at least one byte */
            if (!len) {
                    printf("RFC3389: Lenghth is -1 or null bytes.... \n");
                    return NULL;
            }
            if (len < 24) {
                    printf("RFC3389: Copying %d bytes.... \n", len);
                    rtp->f.datalen = len - 1;
                    memcpy(rtp->f.data, data + 1, len - 1);
                    printf("RFC3389: Copying finished %d bytes.... \n", len);
            } else {
                     printf("RFC3389: Copying 0 bytes.... \n");
                    rtp->f.datalen = 0;
            }
            printf("RFC3389: Preparing return.... \n");
            rtp->f.frametype = AST_FRAME_CNG;
            rtp->f.subclass = data[0] & 0x7f;
            rtp->f.datalen = len - 1;
            rtp->f.samples = 0;
            rtp->f.delivery.tv_usec = rtp->f.delivery.tv_sec = 0;
            f = &rtp->f;
            printf("RFC3389: Returning f.... \n");
            return f;
    }

    Does this occur because the len is set but the data isn't there??

    Kind regards

    Claus


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