/**
* Processes a packet received from the RTP socket.
*/
static void rtp_process (demux_t *demux, block_t *block)
{
demux_sys_t *sys = demux->p_sys;
if (block->i_buffer < 2)
goto drop;
const uint8_t ptype = rtp_ptype (block);
if (ptype >= 72 && ptype <= 76)
goto drop; /* Muxed RTCP, ignore for now FIXME */
#ifdef HAVE_SRTP
if (sys->srtp != NULL)
{
size_t len = block->i_buffer;
if (srtp_recv (sys->srtp, block->p_buffer, &len))
{
msg_Dbg (demux, "SRTP authentication/decryption failed");
goto drop;
}
block->i_buffer = len;
}
#endif
/* TODO: use SDP and get rid of this hack */
if (unlikely(sys->autodetect))
{ /* Autodetect payload type, _before_ rtp_queue() */
rtp_autodetect (demux, sys->session, block);
sys->autodetect = false;
}
rtp_queue (demux, sys->session, block);
return;
drop:
block_Release (block);
}
static block_t *rtp_recv (demux_t *demux)
{
demux_sys_t *p_sys = demux->p_sys;
for (block_t *block;; block_Release (block))
{
block = p_sys->framed_rtp
? rtp_stream_recv (VLC_OBJECT (demux), p_sys->fd)
: rtp_dgram_recv (VLC_OBJECT (demux), p_sys->fd);
if (block == NULL)
{
msg_Err (demux, "RTP flow stopped");
break; /* fatal error */
}
if (block->i_buffer < 2)
continue;
/* FIXME */
const uint8_t ptype = rtp_ptype (block);
if (ptype >= 72 && ptype <= 76)
continue; /* Muxed RTCP, ignore for now */
#ifdef HAVE_SRTP
if (p_sys->srtp)
{
size_t len = block->i_buffer;
int canc, err;
canc = vlc_savecancel ();
err = srtp_recv (p_sys->srtp, block->p_buffer, &len);
vlc_restorecancel (canc);
if (err)
{
msg_Dbg (demux, "SRTP authentication/decryption failed");
continue;
}
block->i_buffer = len;
}
#endif
return block; /* success! */
}
return NULL;
}
