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rtp.cpp
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rtp.cpp
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/* Martin Vit [email protected]
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2.
*/
/*
This unit implements class RTP which processes RTP packets and make statistics on them.
Each Call class contains two RTP classes.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <syslog.h>
#include <errno.h>
#include <pcap.h>
#include "voipmonitor.h"
#include "tools.h"
#include "rtp.h"
#include "calltable.h"
#include "codecs.h"
#include "sniff.h"
#include "format_slinear.h"
#include "codec_alaw.h"
#include "codec_ulaw.h"
#include "flags.h"
#include "jitterbuffer/asterisk/channel.h"
#include "jitterbuffer/asterisk/frame.h"
#include "jitterbuffer/asterisk/abstract_jb.h"
#include "jitterbuffer/asterisk/strings.h"
extern int verbosity;
extern int opt_saveRAW; //save RTP payload RAW data?
extern int opt_saveWAV; //save RTP payload RAW data?
extern int opt_saveGRAPH; //save GRAPH data?
extern FileZipHandler::eTypeCompress opt_gzipGRAPH; //save gzip GRAPH data?
extern int opt_jitterbuffer_f1; // turns off/on jitterbuffer simulator to compute MOS score mos_f1
extern int opt_jitterbuffer_f2; // turns off/on jitterbuffer simulator to compute MOS score mos_f2
extern int opt_jitterbuffer_adapt; // turns off/on jitterbuffer simulator to compute MOS score mos_adapt
extern char opt_cachedir[1024];
extern int opt_savewav_force;
extern int opt_rtp_check_timestamp;
int dtmfdebug = 0;
extern unsigned int graph_delimiter;
extern unsigned int graph_mark;
extern int opt_faxt30detect;
extern int opt_inbanddtmf;
extern int opt_silencedetect;
extern int opt_clippingdetect;
extern char opt_pb_read_from_file[256];
using namespace std;
/* Convert timeval structure into microsecond representation */
inline u_int32_t timeval2micro(const timeval t) {
return ((t.tv_sec * 1000000ull) + t.tv_usec);
}
/* Subtract the `struct timeval' values X and Y,
storing the result in RESULT.
Return 1 if the difference is negative, otherwise 0. */
int
timeval_subtract (struct timeval *result, struct timeval x, struct timeval y) {
/* Perform the carry for the later subtraction by updating y. */
if (x.tv_usec < y.tv_usec) {
int nsec = (y.tv_usec - x.tv_usec) / 1000000 + 1;
y.tv_usec -= 1000000 * nsec;
y.tv_sec += nsec;
}
if (x.tv_usec - y.tv_usec > 1000000) {
int nsec = (x.tv_usec - y.tv_usec) / 1000000;
y.tv_usec += 1000000 * nsec;
y.tv_sec -= nsec;
}
/* Compute the time remaining to wait.
tv_usec is certainly p60itive. */
result->tv_sec = x.tv_sec - y.tv_sec;
result->tv_usec = x.tv_usec - y.tv_usec;
/* Return 1 if result is negative. */
return x.tv_sec < y.tv_sec;
}
int get_ticks_bycodec(int codec) {
switch(codec) {
case PAYLOAD_PCMU:
return 8;
break;
case PAYLOAD_GSM:
return 8;
break;
case PAYLOAD_G723:
return 8;
break;
case PAYLOAD_PCMA:
return 8;
break;
case PAYLOAD_G722:
return 8;
break;
case PAYLOAD_G729:
return 8;
break;
case PAYLOAD_ILBC:
return 8;
break;
case PAYLOAD_SPEEX:
return 8;
break;
case PAYLOAD_SILK8:
return 8;
break;
case PAYLOAD_SILK12:
return 12;
break;
case PAYLOAD_SILK16:
return 16;
break;
case PAYLOAD_SILK24:
return 24;
break;
case PAYLOAD_ISAC16:
return 16;
break;
case PAYLOAD_ISAC32:
return 32;
break;
case PAYLOAD_OPUS:
case PAYLOAD_OPUS8:
case PAYLOAD_XOPUS:
case PAYLOAD_XOPUS8:
return 8;
break;
case PAYLOAD_XOPUS12:
case PAYLOAD_OPUS12:
return 12;
break;
case PAYLOAD_XOPUS16:
case PAYLOAD_OPUS16:
return 16;
break;
case PAYLOAD_XOPUS24:
case PAYLOAD_OPUS24:
return 24;
break;
case PAYLOAD_XOPUS48:
case PAYLOAD_OPUS48:
return 48;
break;
case PAYLOAD_G7221:
return 8;
break;
case PAYLOAD_G722112:
return 12;
break;
case PAYLOAD_G722116:
return 16;
break;
case PAYLOAD_G722124:
return 24;
break;
case PAYLOAD_G722132:
return 32;
break;
case PAYLOAD_G722148:
return 48;
break;
default:
return 8;
}
}
/* constructor */
RTP::RTP(int sensor_id)
: graph(this) {
DSP = NULL;
samplerate = 8000;
first = true;
first_packet_time = 0;
first_packet_usec = 0;
s = new FILE_LINE source;
memset(s, 0, sizeof(source));
memset(&stats, 0, sizeof(stats));
memset(&rtcp, 0, sizeof(rtcp));
nintervals = 1;
saddr = 0;
daddr = 0;
sport = 0;
dport = 0;
ssrc = 0;
ssrc2 = 0;
gfilename[0] = '\0';
gfileRAW = NULL;
channel_fix1 = new FILE_LINE ast_channel;
memset(channel_fix1, 0, sizeof(ast_channel));
channel_fix1->jitter_impl = 0; // fixed
channel_fix1->jitter_max = 50;
channel_fix1->jitter_resync_threshold = 100;
channel_fix1->last_datalen = 0;
channel_fix1->lastbuflen = 0;
channel_fix1->resync = 1;
channel_fix1->audiobuf = NULL;
channel_fix2 = new FILE_LINE ast_channel;
memset(channel_fix2, 0, sizeof(ast_channel));
channel_fix2->jitter_impl = 0; // fixed
channel_fix2->jitter_max = 200;
channel_fix2->jitter_resync_threshold = 200;
channel_fix2->last_datalen = 0;
channel_fix2->lastbuflen = 0;
channel_fix2->resync = 1;
channel_fix2->audiobuf = NULL;
channel_adapt = new FILE_LINE ast_channel;
memset(channel_adapt, 0, sizeof(ast_channel));
channel_adapt->jitter_impl = 1; // adaptive
channel_adapt->jitter_max = 500;
channel_adapt->jitter_resync_threshold = 500;
channel_adapt->last_datalen = 0;
channel_adapt->lastbuflen = 0;
channel_adapt->resync = 1;
channel_adapt->audiobuf = NULL;
channel_record = new FILE_LINE ast_channel;
memset(channel_record, 0, sizeof(ast_channel));
channel_record->jitter_impl = 0; // fixed
channel_record->jitter_max = 60;
channel_record->jitter_resync_threshold = 1000;
channel_record->last_datalen = 0;
channel_record->lastbuflen = 0;
channel_record->resync = 0;
channel_record->audiobuf = NULL;
//channel->name = "SIP/fixed";
frame = new FILE_LINE ast_frame;
memset(frame, 0, sizeof(ast_frame));
frame->frametype = AST_FRAME_VOICE;
lastframetype = AST_FRAME_VOICE;
//frame->src = "DUMMY";
last_seq = 0;
last_ts = 0;
packetization = 0;
last_packetization = 0;
packetization_iterator = 0;
first_codec = -1;
prev_payload = -1;
prev_codec = -1;
payload2 = -1;
codec = -1;
for(int i = 0; i < MAX_RTPMAP; i++) {
rtpmap[i] = 0;
}
gfileRAW_buffer = NULL;
sid = false;
prev_sid = false;
call_owner = NULL;
pinformed = 0;
last_end_timestamp = 0;
lastdtmf = 0;
forcemark = 0;
ignore = 0;
lastcng = 0;
dscp = 0;
this->sensor_id = sensor_id;
this->_last_ts.tv_sec = 0;
this->_last_ts.tv_usec = 0;
this->_last_sensor_id = 0;
this->_last_ifname[0] = 0;
lastTimeSyslog = 0;
avg_ptime = 0;
avg_ptime_count = 0;
}
/* destructor */
RTP::~RTP() {
/*
if(packetization)
RTP::dump();
*/
//Call *owner = (Call*)call_owner;
if(verbosity > 9) {
RTP::dump();
}
if(gfileRAW) {
jitterbuffer_fixed_flush(channel_record);
fclose(gfileRAW);
}
delete s;
ast_jb_destroy(channel_fix1);
ast_jb_destroy(channel_fix2);
ast_jb_destroy(channel_adapt);
ast_jb_destroy(channel_record);
delete channel_fix1;
delete channel_fix2;
delete channel_adapt;
delete channel_record;
delete frame;
if(gfileRAW_buffer) {
delete [] gfileRAW_buffer;
}
if(DSP) {
dsp_free(DSP);
}
}
const int RTP::get_payload_len() {
payload_data = data + sizeof(RTPFixedHeader);
payload_len = len - sizeof(RTPFixedHeader);
if(getPadding()) {
/*
* If set, this packet contains one or more additional padding
* bytes at the end which are not part of the payload. The last
* byte of the padding contains a count of how many padding bytes
* should be ignored. Padding may be needed by some encryption
* algorithms with fixed block sizes or for carrying several RTP
* packets in a lower-layer protocol data unit.
*/
payload_len -= ((u_int8_t *)data)[len - 1];
}
if(getCC() > 0) {
/*
* The number of CSRC identifiers that follow the fixed header.
*/
payload_data += 4 * getCC();
payload_len -= 4 * getCC();
}
if(getExtension()) {
/*
* If set, the fixed header is followed by exactly one header extension.
*/
extension_hdr_t *rtpext;
// the extension, if present, is after the CSRC list.
rtpext = (extension_hdr_t *)((u_int8_t *)payload_data);
payload_data += sizeof(extension_hdr_t) + ntohs(rtpext->length);
payload_len -= sizeof(extension_hdr_t) + ntohs(rtpext->length);
if (payload_len < 2) {
payload_data = data + sizeof(RTPFixedHeader);
payload_len = 0;
}
}
return payload_len;
}
/* flush jitterbuffer */
void RTP::jitterbuffer_fixed_flush(struct ast_channel *jchannel) {
jb_fixed_flush_deliver(channel_record);
}
/* add silence to RTP stream from last packet time to current time which is in header->ts */
void
RTP::jt_tail(struct pcap_pkthdr *header) {
if(!ast_jb_test(channel_record)) {
// there is no ongoing recording, return
return;
}
/* protect for endless loops (it cannot happen in theory but to be sure */
if(packetization <= 0) {
Call *owner = (Call*)call_owner;
if(owner) {
syslog(LOG_ERR, "call-id[%s]: packetization is 0 in jitterbuffer function.", owner->get_fbasename_safe());
} else {
syslog(LOG_ERR, "call-id[N/A]: packetization is 0 in jitterbuffer function.");
}
return;
}
/* calculate time difference between last packet and current packet + packetization time*/
if(channel_record->last_ts.tv_sec == 0) {
// previouuse tv_sec is not set, set it
memcpy(&channel_record->last_ts, &header->ts, sizeof(timeval));
return;
}
int msdiff = ast_tvdiff_ms(header->ts, channel_record->last_ts);
msdiff -= packetization;
while( msdiff >= packetization ) {
ast_jb_get_and_deliver(channel_record, &channel_record->last_ts);
/* adding packetization time to last_ts time */
struct timeval tmp = ast_tvadd(channel_record->last_ts, ast_samp2tv(packetization, 1000));
memcpy(&channel_record->last_ts, &tmp, sizeof(struct timeval));
msdiff -= packetization;
}
}
#if 1
/* simulate jitterbuffer */
void
RTP::jitterbuffer(struct ast_channel *channel, int savePayload) {
if(codec == PAYLOAD_TELEVENT) return;
Call *owner = (Call*)call_owner;
if(owner and savePayload and owner->silencerecording) {
// skip recording
frame->skip = 1;
} else {
frame->skip = 0;
}
struct timeval tsdiff;
frame->len = packetization;
switch(codec) {
case PAYLOAD_XOPUS12:
case PAYLOAD_OPUS12:
case PAYLOAD_G722112:
frame->ts = getTimestamp() / 12;
//frame->len = packetization * 2 / 3;
break;
case PAYLOAD_ISAC16:
case PAYLOAD_SILK16:
case PAYLOAD_XOPUS16:
case PAYLOAD_OPUS16:
case PAYLOAD_G722116:
frame->ts = getTimestamp() / 16;
//frame->len = packetization / 2;
break;
case PAYLOAD_SILK24:
case PAYLOAD_XOPUS24:
case PAYLOAD_OPUS24:
case PAYLOAD_G722124:
frame->ts = getTimestamp() / 24;
//frame->len = packetization / 3;
break;
case PAYLOAD_ISAC32:
case PAYLOAD_G722132:
frame->ts = getTimestamp() / 32;
//frame->len = packetization / 4;
break;
case PAYLOAD_XOPUS48:
case PAYLOAD_OPUS48:
frame->ts = getTimestamp() / 48;
//frame->len = packetization / 6;
break;
default:
frame->ts = getTimestamp() / 8;
//frame->len = packetization;
}
frame->marker = getMarker();
frame->seqno = getSeqNum();
channel->codec = codec;
frame->ignore = ignore;
memcpy(&frame->delivery, &header->ts, sizeof(struct timeval));
/* protect for endless loops (it cannot happen in theory but to be sure */
if(packetization <= 0) {
if(pinformed == 0) {
if(owner) {
syslog(LOG_ERR, "call-id[%s] ssrc[%x]: packetization is 0 in jitterbuffer function.", owner->get_fbasename_safe(), getSSRC());
} else {
syslog(LOG_ERR, "call-id[N/A] ssrc[%x]: packetization is 0 in jitterbuffer function.", getSSRC());
}
}
pinformed = 1;
return;
} else {
pinformed = 0;
}
struct iphdr2 *header_ip = (struct iphdr2 *)(data - sizeof(struct iphdr2) - sizeof(udphdr2));
int mylen = MIN((unsigned int)len, ntohs(header_ip->tot_len) - header_ip->ihl * 4 - sizeof(udphdr2));
if(savePayload or (codec == PAYLOAD_G729 or codec == PAYLOAD_G723)) {
/* get RTP payload header and datalen */
payload_data = data + sizeof(RTPFixedHeader);
payload_len = mylen - sizeof(RTPFixedHeader);
if(getPadding()) {
/*
* If set, this packet contains one or more additional padding
* bytes at the end which are not part of the payload. The last
* byte of the padding contains a count of how many padding bytes
* should be ignored. Padding may be needed by some encryption
* algorithms with fixed block sizes or for carrying several RTP
* packets in a lower-layer protocol data unit.
*/
payload_len -= ((u_int8_t *)data)[payload_len - 1];
}
if(getCC() > 0) {
/*
* The number of CSRC identifiers that follow the fixed header.
*/
payload_data += 4 * getCC();
payload_len -= 4 * getCC();
}
if(getExtension()) {
/*
* If set, the fixed header is followed by exactly one header extension.
*/
extension_hdr_t *rtpext;
// the extension, if present, is after the CSRC list.
rtpext = (extension_hdr_t *)((u_int8_t *)payload_data);
payload_data += sizeof(extension_hdr_t) + ntohs(rtpext->length);
payload_len -= sizeof(extension_hdr_t) + ntohs(rtpext->length);
if (payload_len < 4) {
payload_data = data + sizeof(RTPFixedHeader);
payload_len = 0;
}
}
frame->data = payload_data;
frame->datalen = payload_len > 0 ? payload_len : 0; /* ensure that datalen is never negative */
if(codec == PAYLOAD_G723) {
// voipmonitor does not handle SID packets well (silence packets) it causes out of sync
if((unsigned char)payload_data[0] & 2) {
/* check if jitterbuffer is already created. If not we have to create it because
if call starts with SID packets first it will than cause out of sync calls
*/
if(ast_test_flag(&channel->jb, (1 << 2))) {
// jitterbuffer is created so we can skip SID packets now
return;
}
}
}
if(codec == PAYLOAD_G729 and (payload_len <= (packetization == 10 ? 9 : 12))) {
frame->frametype = AST_FRAME_DTMF;
frame->marker = 1;
}
}
if(lastcng or lastframetype == AST_FRAME_DTMF) {
frame->marker = 1;
}
if(savePayload) {
channel->rawstream = gfileRAW;
Call *owner = (Call*)call_owner;
if(iscaller) {
owner->codec_caller = codec;
if(owner->audiobuffer1 &&
(!owner->last_seq_audiobuffer1 ||
owner->last_seq_audiobuffer1 < frame->seqno)) {
channel->audiobuf = owner->audiobuffer1;
owner->last_seq_audiobuffer1 = frame->seqno;
}
} else {
owner->codec_called = codec;
if(owner->audiobuffer2 &&
(!owner->last_seq_audiobuffer2 ||
owner->last_seq_audiobuffer2 < frame->seqno)) {
channel->audiobuf = owner->audiobuffer2;
owner->last_seq_audiobuffer2 = frame->seqno;
}
}
if(payload_len > 0) {
channel->last_datalen = frame->datalen;
}
} else {
frame->datalen = 0;
frame->data = NULL;
channel->rawstream = NULL;
}
// create jitter buffer structures
ast_jb_do_usecheck(channel, &header->ts);
if(channel->jb.timebase.tv_sec == header->ts.tv_sec &&
channel->jb.timebase.tv_usec == header->ts.tv_usec) {
channel->last_ts = header->ts;
}
if(!channel->jb_reseted) {
// initializing jitterbuffer
if(savePayload) {
channel_record->jitter_max = frame->len * 3;
}
ast_jb_empty_and_reset(channel);
channel->jb_reseted = 1;
memcpy(&channel->last_ts, &header->ts, sizeof(struct timeval));
ast_jb_put(channel, frame, &header->ts);
this->clearAudioBuff(owner, channel);
return;
}
/* calculate time difference between last packet and current packet + packetization time*/
int msdiff = ast_tvdiff_ms( header->ts, ast_tvadd(channel->last_ts, ast_samp2tv(packetization, 1000)) );
//printf("ms:%d\n", msdiff);
if(msdiff > packetization * 10000) {
// difference is too big, reseting last_ts to current packet. If we dont check this it could happen to run while cycle endlessly
memcpy(&channel->last_ts, &header->ts, sizeof(struct timeval));
ast_jb_put(channel, frame, &header->ts);
if(verbosity > 4) syslog(LOG_ERR, "big timestamp jump (msdiff:%d packetization: %d) in this file: %s\n", msdiff, packetization, gfilename);
this->clearAudioBuff(owner, channel);
return;
}
/* between last packet and current packet is big timestamp difference and it could count
* interpolated framed although it was silence so calculate real number of packets based
* on timestamps in packet header, timestamps in rtp header and sequence numbers between
* last packet and current packet
*/
// relative time difference calculated from packet sequence
u_int32_t sequencems = (frame->seqno - last_seq) * packetization;
/* difference (in ms) between timestamps in packet header and rtp timestamps. this should
* be ideally equel to zero. Negative values mean that packet arrives earlier and positive
* values indicates that packet was late
*/
long double transit = (timeval_subtract(&tsdiff, header->ts, s->lastTimeRecJ) ? -timeval2micro(tsdiff)/1000.0 : timeval2micro(tsdiff)/1000.0) - (double)(getTimestamp() - s->lastTimeStampJ)/(double)samplerate/1000;
/* and now if there is bigger (lets say one second) timestamp difference (calculated from packet headers)
* between two last packets and transit time is equel or smaller than sequencems (with 200ms toleration),
* it was silence and manually mark the frame which indicates to not count interpolated frame and resynchronize jitterbuffer
*/
if( msdiff > 1000 and (transit <= (sequencems + 200)) ) {
// check if the last frame was CNG or the last frame was DTMF - force mark bit
if(lastcng or (lastframetype == AST_FRAME_DTMF)) {
if(verbosity > 4) printf("jitterbuffer: manually marking packet, msdiff(%d) > 1000 and transit (%Lf) <= ((sequencems(%u) + 200)\n", msdiff, transit, sequencems);
frame->marker = 1;
}
}
// fetch packet from jitterbuffer every 20 ms regardless on packet loss or delay
while( msdiff >= packetization ) {
if(frame->marker or lastframetype == AST_FRAME_DTMF) {
/* if last frame was marked or DTMF, ignore interpolated frames */
channel->last_loss_burst = 0;
}
ast_jb_get_and_deliver(channel, &channel->last_ts);
/* adding packetization time to last_ts time */
struct timeval tmp = ast_tvadd(channel->last_ts, ast_samp2tv(frame->len, 1000));
memcpy(&channel->last_ts, &tmp, sizeof(struct timeval));
msdiff -= packetization;
}
//printf("s[%u] codec[%d]\n",getSeqNum(), codec);
ast_jb_put(channel, frame, &header->ts);
this->clearAudioBuff(owner, channel);
}
#endif
void
RTP::process_dtmf_rfc2833() {
unsigned int seqno = getSeqNum();
unsigned int event, event_end, samples;
char resp = 0;
unsigned int timestamp = getTimestamp();
unsigned char *pdata = data + sizeof(RTPFixedHeader);
/* Figure out event, event end, and samples */
event = ntohl(*((unsigned int *)(pdata)));
event >>= 24;
event_end = ntohl(*((unsigned int *)(pdata)));
event_end <<= 8;
event_end >>= 24;
samples = ntohl(*((unsigned int *)(pdata)));
samples &= 0xFFFF;
if(dtmfdebug) syslog(LOG_ERR, "Got RTP RFC2833 from %u (seq %-6.6u, ts %-6.6u, len %-6.6u, mark %d, event %08x, end %d, duration %-5.5d) \n",
getMarker(), seqno, timestamp, len, (getMarker()?1:0), event, ((event_end & 0x80)?1:0), samples);
/* Figure out what digit was pressed */
if (event < 10) {
resp = '0' + event;
} else if (event < 11) {
resp = '*';
} else if (event < 12) {
resp = '#';
} else if (event < 16) {
resp = 'A' + (event - 12);
} else if (event < 17) { /* Event 16: Hook flash */
resp = 'X';
} else {
/* Not a supported event */
//syslog(LOG_ERR, "Ignoring RTP 2833 Event: %08x. Not a DTMF Digit.\n", event);
return;
}
if ((last_end_timestamp != timestamp) || (lastdtmf && lastdtmf != resp)) {
lastdtmf = resp;
if(dtmfdebug) syslog(LOG_ERR, "dtmfevent %c\n", resp);
last_end_timestamp = timestamp;
Call *owner = (Call*)call_owner;
if(owner) {
owner->handle_dtmf(resp, ts2double(header->ts.tv_sec, header->ts.tv_usec), saddr, daddr);
}
}
return;
}
/* read rtp packet */
void
RTP::read(unsigned char* data, int len, struct pcap_pkthdr *header, u_int32_t saddr, u_int32_t daddr, u_int16_t sport, u_int16_t dport, int seeninviteok, int sensor_id, char *ifname) {
this->data = data;
this->len = len;
this->header = header;
this->saddr = saddr;
this->daddr = daddr;
this->dport = dport;
this->sport = sport;
this->ignore = 0;
if(sverb.ssrc and getSSRC() != sverb.ssrc) return;
if(sverb.read_rtp) {
extern u_int64_t read_rtp_counter;
++read_rtp_counter;
cout << "RTP - read -"
<< " ssrc: " << hex << this->ssrc << dec << " "
<< " src: " << inet_ntostring(htonl(saddr)) << " : " << sport
<< " dst: " << inet_ntostring(htonl(daddr)) << " : " << dport
<< " seq: " << getSeqNum() << " "
<< " iscaller: " << (iscaller ? "caller" : "called")
<< " packets_received: " << this->stats.received
<< " counter: " << read_rtp_counter
<< endl;
}
if(this->sensor_id >= 0 && this->sensor_id != sensor_id) {
/*
u_long actTime = getTimeMS();
if(actTime - 1000 > lastTimeSyslog) {
syslog(LOG_NOTICE, "warning - packet from sensor (%i) in RTP created for sensor (%i)", sensor_id, this->sensor_id);
lastTimeSyslog = actTime;
}
*/
return;
}
if(this->first_packet_time == 0 and this->first_packet_usec == 0) {
this->first_packet_time = header->ts.tv_sec;
this->first_packet_usec = header->ts.tv_usec;
}
Call *owner = (Call*)call_owner;
if(owner and owner->destroy_call_at_bye && !opt_pb_read_from_file[0]) {
// do not process RTP if call is hangedup to prevent false negative statistics
return;
}
if(owner) {
owner->forcemark_lock();
for(int i = 0; i < 2; i++) {
size_t _forcemark_size = owner->forcemark_time[i].size();
if(_forcemark_size) {
u_int64_t _forcemark_time = owner->forcemark_time[i].front();
u_int64_t _header_time = header->ts.tv_sec * 1000000ull + header->ts.tv_usec;
if(_forcemark_time < _header_time) {
/*
cout << "set forcemark " << _forcemark_time
<< " header time " << _header_time
<< " forcemarks size " << _forcemark_size
<< endl;
*/
owner->forcemark[i] = 1;
owner->forcemark_time[i].pop();
}
}
}
owner->forcemark_unlock();
}
int payload_len = get_payload_len();
if(payload_len < 0) {
if(owner) {
if(!owner->error_negative_payload_length) {
syslog(LOG_NOTICE, "warning - negative payload_len in call %s", owner->fbasename);
owner->error_negative_payload_length = true;
}
} else {
u_long actTime = getTimeMS();
if(actTime - 1000 > lastTimeSyslog) {
syslog(LOG_NOTICE, "warning - negative payload_len");
lastTimeSyslog = actTime;
}
}
return;
}
if(getVersion() != 2) {
return;
}
seq = getSeqNum();
if(seq == last_seq) {
// ignore duplicated RTP packets
return;
}
if(opt_rtp_check_timestamp) {
if(this->_last_ts.tv_sec &&
(header->ts.tv_sec < this->_last_ts.tv_sec ||
(header->ts.tv_sec == this->_last_ts.tv_sec &&
header->ts.tv_usec < this->_last_ts.tv_usec))) {
u_long actTime = getTimeMS();
if(actTime - 1000 > lastTimeSyslog) {
syslog(LOG_NOTICE, "warning - bad packet order (%llu us) in RTP::read (seq/lastseq: %u/%u, ifname/lastifname: %s/%s, sensor/lastsenspor: %i/%i)- packet ignored",
this->_last_ts.tv_sec * 1000000ull + this->_last_ts.tv_usec - header->ts.tv_sec * 1000000ull - header->ts.tv_usec,
seq, last_seq,
ifname && ifname[0] ? ifname : "--", this->_last_ifname[0] ? this->_last_ifname : "--",
sensor_id, this->_last_sensor_id);
lastTimeSyslog = actTime;
}
return;
}
this->_last_ts = header->ts;
this->_last_sensor_id = sensor_id;
if(ifname) {
strcpy(this->_last_ifname, ifname);
} else {
this->_last_ifname[0] = 0;
}
}
int curpayload = getPayload();
if((codec == -1 || (curpayload != prev_payload))) {
if(curpayload >= 96 && curpayload <= 127) {
/* for dynamic payload we look into rtpmap */
int found = 0;
for(int i = 0; i < MAX_RTPMAP; i++) {
if(rtpmap[i] != 0 && curpayload == rtpmap[i] / 1000) {
codec = rtpmap[i] - curpayload * 1000;
found = 1;
}
}
if(curpayload == 101 and !found) {
// payload 101 was not in SDP, assume it is televent
codec = PAYLOAD_TELEVENT;
}
} else {
codec = curpayload;
}
if(codec == -1) {
// codec cannot be determinad - ignore it
return;
}
}
/* in case there was packet loss we must predict lastTimeStamp to not add nonexistant delays */
forcemark = 0;
if(last_seq != 0 and ((last_seq + 1) != seq)) {
if(s->lastTimeStamp == getTimestamp() - samplerate / 1000 * packetization) {
// there was packet loss but the timestamp is like there was no packet loss
if(opt_jitterbuffer_adapt) {
ast_jb_empty_and_reset(channel_adapt);
ast_jb_destroy(channel_adapt);
}
if(opt_jitterbuffer_f1) {
ast_jb_empty_and_reset(channel_fix1);
ast_jb_destroy(channel_fix1);
}
if(opt_jitterbuffer_f2) {
ast_jb_empty_and_reset(channel_fix2);
ast_jb_destroy(channel_fix2);
}
forcemark = 1;
}
// this fixes jumps in .graph in case of pcaket loss
s->lastTimeStamp = getTimestamp() - samplerate / 1000 * packetization;
struct timeval tmp = ast_tvadd(header->ts, ast_samp2tv(packetization, 1000));
memcpy(&s->lastTimeRec, &tmp, sizeof(struct timeval));
}
if(getMarker()) {
s->lastTimeStamp = getTimestamp() - samplerate / 1000 * packetization;
struct timeval tmp = ast_tvadd(header->ts, ast_samp2tv(packetization, 1000));
memcpy(&s->lastTimeRec, &tmp, sizeof(struct timeval));
s->cycles = s->cycles - s->base_seq + s->max_seq;
s->base_seq = seq;
s->max_seq = seq;
if(sverb.rtp_set_base_seq) {
cout << "RTP - packet_lost - set base_seq #1"
<< " ssrc: " << hex << this->ssrc << dec << " "
<< " src: " << inet_ntostring(htonl(saddr)) << " : " << sport
<< " dst: " << inet_ntostring(htonl(daddr)) << " : " << dport
<< endl;
}
}
if(lastframetype == AST_FRAME_DTMF and codec != PAYLOAD_TELEVENT) {
// last frame was DTMF and now we have voice. Reset jitterbuffers (case 338f884b17f9e5de6c830c237dcc09dd)
if(opt_jitterbuffer_adapt) {
ast_jb_empty_and_reset(channel_adapt);
ast_jb_destroy(channel_adapt);
}
if(opt_jitterbuffer_f1) {
ast_jb_empty_and_reset(channel_fix1);
ast_jb_destroy(channel_fix1);
}
if(opt_jitterbuffer_f2) {
ast_jb_empty_and_reset(channel_fix2);
ast_jb_destroy(channel_fix2);
}
}
// ignore CNG
if(curpayload == 13 or curpayload == 19) {
last_seq = seq;
if(update_seq(seq)) {
update_stats();
}
prev_payload = curpayload;
prev_codec = codec;
lastframetype = AST_FRAME_VOICE;
lastcng = 1;
return;
}
if(curpayload == PAYLOAD_G729 and (payload_len <= (packetization == 10 or packetization == 0 ? 9 : 12) or payload_len == 22)) {
last_seq = seq;
if(update_seq(seq)) {
update_stats();
}
lastframetype = AST_FRAME_VOICE;
lastcng = 1;
return;
}
if(codec == PAYLOAD_TELEVENT) {
process_dtmf_rfc2833();
last_seq = seq;
if(update_seq(seq)) {
update_stats();
}
prev_payload = curpayload;
prev_codec = codec;
lastframetype = AST_FRAME_DTMF;
lastcng = 0;
return;
}
if(!owner) {
lastcng = 0;
return;
}
/* this breaks 4 RTP streams (7b3fa6fb57a719f036fddfbf351234fe pcap sample) and it is not needed anymore (31955aa570d1f71624cea503052de62c)
if(iscaller) {
if(owner->lastcallerrtp and owner->lastcallerrtp != this) {
// reset last sequence
s->cycles = s->cycles - s->base_seq + s->max_seq;
s->base_seq = seq;
s->max_seq = seq - 1;
}
} else {
if(owner->lastcalledrtp and owner->lastcalledrtp != this) {
s->cycles = s->cycles - s->base_seq + s->max_seq;
s->base_seq = seq;
s->max_seq = seq - 1;
}
}
*/
if(owner->forcemark[iscaller]) {
// on reinvite (which indicates forcemark[iscaller] completely reset rtp jitterbuffer simulator and
// there are cases where on reinvite rtp stream stops and there is gap in rtp sequence and timestamp but
// since it was reinvite the stream just continues as expected
if(opt_jitterbuffer_adapt) {
ast_jb_empty_and_reset(channel_adapt);
ast_jb_destroy(channel_adapt);
}
if(opt_jitterbuffer_f1) {
ast_jb_empty_and_reset(channel_fix1);
ast_jb_destroy(channel_fix1);
}
if(opt_jitterbuffer_f2) {
ast_jb_empty_and_reset(channel_fix2);
ast_jb_destroy(channel_fix2);
}
owner->forcemark[iscaller] = 0;
forcemark = 1;
// this fixes jumps in .graph in case of pcaket loss
s->lastTimeStamp = getTimestamp() - samplerate / 1000 * packetization;
struct timeval tmp = ast_tvadd(header->ts, ast_samp2tv(packetization, 1000));