Not enough buffer for SDES packet

[wsycqyz@xxxxxxx (王世彦)]

Hi, nanang

         I use the latest 2262 version of pjsip on Windows XP SP3 and
VS2005.

         I have done some experiments about adding the 2.4K MELP codec to
the pjmedia-codec.

         I followed your help:

 

- set codec ptime to 45ms.

- encode(), decode(), and parse() should aware that other pjmedia components
outside this codec will 'think' that the codec works with 45ms frames, in
other words encode() and decode() will be supplied with 45ms frames
(encode/decode twice), parse() should parse per 45ms encoded frame.

 

         And the result is: encdec.exe & streamutil.exe can perfectly work.

Then I turned to pjsua. The pjsua crashed when it had received the first RTP
packet. The console shows:

 

??

23:47:30.265    pjsua_app.c  Call 0 state changed to CONFIRMED

Assertion failed: !"Not enough buffer for SDES packet", file
d:\pjsip\trunk\pjmedia\src\pjmedia\stream.c, line 556

??

 

         Then I debugged into the stream.c, the assertion fail is in
function create_rtcp_sdes() at line 556 of stream.c which is like this:

 

if (max_len < (hdr.length << 2)) {

pj_assert(!"Not enough buffer for SDES packet");

         return 0;

}

 

         I saw max_len = 22 and hdr.length << 2 = 28. The max_len is give by
function on_rx_rtp() at line 1333 of stream.c which is like this:

 

len = create_rtcp_sdes(stream, (pj_uint8_t*)pkt, 

                          stream->enc->out_pkt_size - len);

 

         Is there any chance to fix the assertion fail? Or should I provide
any more information?

         Thanks!

 

William Wong

2008-9-6

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