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Merge in my latest RTP changes. Break out RTP and RTCP callback functions so they no longer share a common one.

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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@48381 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Joshua Colp
2006-12-11 05:36:45 +00:00
parent 50ee01ccda
commit c866263f50
1 changed files with 51 additions and 35 deletions
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86
main/rtp.c
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@@ -2840,7 +2840,7 @@ static enum ast_bridge_result bridge_native_loop(struct ast_channel *c0, struct
return AST_BRIDGE_FAILED;
}
/*! \brief P2P RTP/RTCP Callback */
/*! \brief P2P RTP Callback */
static int p2p_rtp_callback(int *id, int fd, short events, void *cbdata)
{
int res = 0, hdrlen = 12;
@@ -2848,7 +2848,6 @@ static int p2p_rtp_callback(int *id, int fd, short events, void *cbdata)
socklen_t len;
unsigned int *header;
struct ast_rtp *rtp = cbdata;
int is_rtp = 0, is_rtcp = 0;
if (!rtp)
return 1;
@@ -2859,45 +2858,57 @@ static int p2p_rtp_callback(int *id, int fd, short events, void *cbdata)
header = (unsigned int *)(rtp->rawdata + AST_FRIENDLY_OFFSET);
/* Determine what this file descriptor is for */
if (rtp->s == fd)
is_rtp = 1;
else if (rtp->rtcp && rtp->rtcp->s == fd)
is_rtcp = 1;
/* If NAT support is turned on, then see if we need to change their address */
if (rtp->nat) {
/* If this is for RTP, check that - if it's for RTCP, check that */
if (is_rtp) {
if ((rtp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
(rtp->them.sin_port != sin.sin_port)) {
rtp->them = sin;
rtp->rxseqno = 0;
ast_set_flag(rtp, FLAG_NAT_ACTIVE);
if (option_debug || rtpdebug)
ast_log(LOG_DEBUG, "P2P RTP NAT: Got audio from other end. Now sending to address %s:%d\n", ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port));
}
} else if (is_rtcp) {
if ((rtp->rtcp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
(rtp->rtcp->them.sin_port != sin.sin_port)) {
rtp->rtcp->them = sin;
if (option_debug || rtpdebug)
ast_log(LOG_DEBUG, "P2P RTCP NAT: Got RTCP from other end. Now sending to address %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
}
}
if ((rtp->nat) &&
((rtp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
(rtp->them.sin_port != sin.sin_port))) {
rtp->them = sin;
rtp->rxseqno = 0;
ast_set_flag(rtp, FLAG_NAT_ACTIVE);
if (option_debug || rtpdebug)
ast_log(LOG_DEBUG, "P2P RTP NAT: Got audio from other end. Now sending to address %s:%d\n", ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port));
}
/* If this came from the RTP stream, write out via RTP - if it's RTCP, write out via RTCP */
if (ast_rtp_get_bridged(rtp)) {
if (is_rtp)
bridge_p2p_rtp_write(rtp, header, res, hdrlen);
else if (is_rtcp)
bridge_p2p_rtcp_write(rtp, header, res);
}
/* Write directly out to other RTP stream if bridged */
if (ast_rtp_get_bridged(rtp))
bridge_p2p_rtp_write(rtp, header, res, hdrlen);
return 1;
}
/*! \brief P2P RTCP Callback */
static int p2p_rtcp_callback(int *id, int fd, short events, void *cbdata)
{
int res = 0;
struct sockaddr_in sin;
socklen_t len;
unsigned int *header;
struct ast_rtp *rtp = cbdata;
struct ast_rtcp *rtcp = NULL;
if (!rtp || !(rtcp = rtp->rtcp))
return 1;
len = sizeof(sin);
if ((res = recvfrom(fd, rtp->rawdata + AST_FRIENDLY_OFFSET, sizeof(rtp->rawdata) - AST_FRIENDLY_OFFSET, 0, (struct sockaddr *)&sin, &len)) < 0)
return 1;
header = (unsigned int *)(rtp->rawdata + AST_FRIENDLY_OFFSET);
if ((rtp->nat) &&
((rtcp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
(rtcp->them.sin_port != sin.sin_port))) {
rtcp->them = sin;
if (option_debug || rtpdebug)
ast_log(LOG_DEBUG, "P2P RTCP NAT: Got RTCP from other end. Now sending to address %s:%d\n", ast_inet_ntoa(rtcp->them.sin_addr), ntohs(rtcp->them.sin_port));
}
if (ast_rtp_get_bridged(rtp))
bridge_p2p_rtcp_write(rtp, header, res);
return 1;
}
/*! \brief Helper function to switch a channel and RTP stream into callback mode */
static int p2p_callback_enable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
{
@@ -2920,7 +2931,7 @@ static int p2p_callback_enable(struct ast_channel *chan, struct ast_rtp *rtp, in
/* Now, fire up callback mode */
iod[0] = ast_io_add(rtp->io, fds[0], p2p_rtp_callback, AST_IO_IN, rtp);
if (fds[1] >= 0)
iod[1] = ast_io_add(rtp->io, fds[1], p2p_rtp_callback, AST_IO_IN, rtp);
iod[1] = ast_io_add(rtp->io, fds[1], p2p_rtcp_callback, AST_IO_IN, rtp);
return 1;
}
@@ -2929,17 +2940,22 @@ static int p2p_callback_enable(struct ast_channel *chan, struct ast_rtp *rtp, in
static int p2p_callback_disable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
{
ast_channel_lock(chan);
/* Remove the callback from the IO context */
ast_io_remove(rtp->io, iod[0]);
if (iod[1])
ast_io_remove(rtp->io, iod[1]);
/* Restore file descriptors */
chan->fds[0] = fds[0];
chan->fds[1] = fds[1];
ast_channel_unlock(chan);
/* Restore callback mode if previously used */
if (ast_test_flag(rtp, FLAG_CALLBACK_MODE))
rtp->ioid = ast_io_add(rtp->io, rtp->s, rtpread, AST_IO_IN, rtp);
return 0;
}