int AmRtpStream::ping()
{
// TODO:
// - we'd better send an empty UDP packet
// for this purpose.
unsigned char ping_chr[2];
ping_chr[0] = 0;
ping_chr[1] = 0;
AmRtpPacket rp;
rp.payload = payload;
rp.marker = true;
rp.sequence = sequence++;
rp.timestamp = 0;
rp.ssrc = l_ssrc;
rp.compile((unsigned char*)ping_chr,2);
rp.setAddr(&r_saddr);
if(rp.send(l_sd) < 0){
ERROR("while sending RTP packet.\n");
return -1;
}
return 2;
}
int AmRtpStream::send( unsigned int ts, unsigned char* buffer, unsigned int size )
{
if ((mute) || (hold))
return 0;
if(!size)
return -1;
AmRtpPacket rp;
rp.payload = payload;
rp.marker = false;
rp.sequence = sequence++;
rp.timestamp = ts;
rp.ssrc = l_ssrc;
rp.compile((unsigned char*)buffer,size);
rp.setAddr(&r_saddr);
#ifdef WITH_ZRTP
if (session->zrtp_audio) {
zrtp_status_t status = zrtp_status_fail;
unsigned int size = rp.getBufferSize();
status = zrtp_process_rtp(session->zrtp_audio, (char*)rp.getBuffer(), &size);
switch (status) {
case zrtp_status_drop: {
DBG("ZRTP says: drop packet! %u - %u\n", size, rp.getBufferSize());
return 0;
}
case zrtp_status_ok: {
// DBG("ZRTP says: ok!\n");
if (rp.getBufferSize() != size)
// DBG("SEND packet size before: %d, after %d\n",
// rp.getBufferSize(), size);
rp.setBufferSize(size);
} break;
default:
case zrtp_status_fail: {
DBG("ZRTP says: fail!\n");
// DBG("(f)");
return 0;
}
}
}
#endif
if(rp.send(l_sd) < 0){
ERROR("while sending RTP packet.\n");
return -1;
}
return size;
}
int AmRtpStream::send_raw( char* packet, unsigned int length )
{
if ((mute) || (hold))
return 0;
AmRtpPacket rp;
rp.compile_raw((unsigned char*)packet, length);
rp.setAddr(&r_saddr);
if(rp.send(l_sd) < 0){
ERROR("while sending raw RTP packet.\n");
return -1;
}
return length;
}
int AmRtpStream::send( unsigned int ts, unsigned char* buffer, unsigned int size )
{
if ((mute) || (hold))
return 0;
if(!size)
return -1;
AmRtpPacket rp;
rp.payload = payload;
rp.marker = false;
rp.sequence = sequence++;
rp.timestamp = ts;
rp.ssrc = l_ssrc;
rp.compile((unsigned char*)buffer,size);
rp.setAddr(&r_saddr);
if(rp.send(l_sd) < 0){
ERROR("while sending RTP packet.\n");
return -1;
}
return size;
}
