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Support CNG transmission when on hold (bug #2904)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@4704 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer
2005-01-07 07:11:40 +00:00
parent 238c12b67e
commit d3418aa14a
3 changed files with 72 additions and 2 deletions
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40
rtp.c
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@@ -1129,6 +1129,46 @@ int ast_rtp_senddigit(struct ast_rtp *rtp, char digit)
return 0;
}
int ast_rtp_sendcng(struct ast_rtp *rtp, int level)
{
unsigned int *rtpheader;
int hdrlen = 12;
int res;
int payload;
char data[256];
char iabuf[INET_ADDRSTRLEN];
level = 127 - (level & 0x7f);
payload = ast_rtp_lookup_code(rtp, 0, AST_RTP_CN);
/* If we have no peer, return immediately */
if (!rtp->them.sin_addr.s_addr)
return 0;
gettimeofday(&rtp->dtmfmute, NULL);
rtp->dtmfmute.tv_usec += (500 * 1000);
if (rtp->dtmfmute.tv_usec > 1000000) {
rtp->dtmfmute.tv_usec -= 1000000;
rtp->dtmfmute.tv_sec += 1;
}
/* Get a pointer to the header */
rtpheader = (unsigned int *)data;
rtpheader[0] = htonl((2 << 30) | (1 << 23) | (payload << 16) | (rtp->seqno++));
rtpheader[1] = htonl(rtp->lastts);
rtpheader[2] = htonl(rtp->ssrc);
data[12] = level;
if (rtp->them.sin_port && rtp->them.sin_addr.s_addr) {
res = sendto(rtp->s, (void *)rtpheader, hdrlen + 1, 0, (struct sockaddr *)&rtp->them, sizeof(rtp->them));
if (res <0)
ast_log(LOG_ERROR, "RTP Comfort Noise Transmission error to %s:%d: %s\n", ast_inet_ntoa(iabuf, sizeof(iabuf), rtp->them.sin_addr), ntohs(rtp->them.sin_port), strerror(errno));
if(rtp_debug_test_addr(&rtp->them))
ast_verbose("Sent Comfort Noise RTP packet to %s:%d (type %d, seq %d, ts %d, len %d)\n"
, ast_inet_ntoa(iabuf, sizeof(iabuf), rtp->them.sin_addr), ntohs(rtp->them.sin_port), payload, rtp->seqno, rtp->lastts,res - hdrlen);
}
return 0;
}
#ifdef SOLARIS
static void put_uint32(unsigned char *buf, int i)
{