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<p class=MsoNormal><span style='color:#1F497D'>Thanks Craig, Olle and everyone
else who replied to my emal.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>This works for me! <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Jonathan<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
asterisk-video-bounces@lists.digium.com
[mailto:asterisk-video-bounces@lists.digium.com] <b>On Behalf Of </b>craig
brown<br>
<b>Sent:</b> Wednesday, August 19, 2009 5:06 AM<br>
<b>To:</b> Development discussion of video media support in Asterisk<br>
<b>Subject:</b> Re: [Asterisk-video] SIP fmtp message support for H.264 video<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>Jonathan,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
If you replace this function in chan_sip.c, it works quite well with most VC
systems, especially on H.264. It's a bit of a local hack, and I'm working on a
far better solution, but it works demo purposes.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>/*! \brief Add video
codec offer to SDP offer/answer body in INVITE or 200 OK */<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>/* This is different
to the audio one now so we can add more caps later */<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>static void
add_vcodec_to_sdp(const struct sip_pvt *p, int codec, int sample_rate,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
struct ast_str **m_buf, struct ast_str **a_buf,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
int debug, int *min_packet_size)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>{<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
int rtp_code;<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
if (!p->vrtp)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
return;<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
if (debug)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
ast_verbose("Adding video codec 0x%x (%s) to SDP\n", codec,
ast_getformatname(codec));<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
if ((rtp_code = ast_rtp_lookup_code(p->vrtp, 1, codec)) == -1)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
return;<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
ast_str_append(m_buf, 0, " %d", rtp_code);<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
ast_str_append(a_buf, 0, "a=rtpmap:%d %s/%d\r\n", rtp_code,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
ast_rtp_lookup_mime_subtype(1, codec, 0), sample_rate);<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
/* Add fmtp code here */<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
if (debug)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
ast_verbose ("FMTP Codec Count %d\r\nCodec is
0x%x\r\n",p->fmtp_count,codec);<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
/* Craig */<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
if (codec & 0x100000) {<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
ast_verbose ("Appending H263+ FMTP Video\n");<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
ast_str_append(a_buf,0,"a=fmtp:%d custom=1280,800,0;custom=1280,768,0;custom=1280,720,3;custom=1024,768,4;custom=1024,576,2;custom=800,600,3;cif4=2;custom=720,480,2;custom=640,480,2;custom=512,288,1;cif=1;custom=352,240,1;qcif=1;sqcif=1;maxbr=10240\r\n",rtp_code);<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
}<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
if (codec & 0x200000) {<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
ast_verbose("Appending H264 FMTP Video\n");<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
ast_str_append(a_buf,0,"a=fmtp:%d
profile-level-id=428016;max-mbps=245000;max-fs=8160;max-smbps=245000\r\n",rtp_code);<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>
}<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>}<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>Craig brown<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> asterisk-video-bounces@lists.digium.com
[mailto:asterisk-video-bounces@lists.digium.com] <b>On Behalf Of </b>Gallmeier,
Jonathan<br>
<b>Sent:</b> 18 August 2009 22:17<br>
<b>To:</b> asterisk-video@lists.digium.com<br>
<b>Subject:</b> [Asterisk-video] SIP fmtp message support for H.264 video<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal>Hi,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I’m working on an Asterisk app that bridges SIP video to a
soft phone that only supports RTP video in/out of the phone’s SDK. The only
video format supported is H.264. I noticed that Asterisk SIP appears to
lack fmtp messages. Is anyone working on adding these into the SIP code? I
noticed a few comments regarding this issue in some of the bugs, but I have not
found anything that indicates that there is active development in this area.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Jonathan<o:p></o:p></p>
<p><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'>No
virus found in this incoming message.<br>
Checked by AVG - www.avg.com<br>
Version: 8.5.409 / Virus Database: 270.13.58/2306 - Release Date: 08/18/09
06:03:00</span><span lang=EN-GB><o:p></o:p></span></p>
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