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stream.c
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/*
* Copyright (C) 2014-2020 Catalin Toda <[email protected]>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*/
#include <errno.h>
#include <getopt.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <string.h>
#include <poll.h>
#include <fcntl.h>
#include "minisatip.h"
#include "socketworks.h"
#include "stream.h"
#include "dvb.h"
#include "adapter.h"
#include "tables.h"
extern struct struct_opts opts;
streams *st[MAX_STREAMS];
SMutex st_mutex;
extern int tuner_s2, tuner_t, tuner_c, tuner_t2, tuner_c2;
char *describe_streams(sockets *s, char *req, char *sbuf, int size)
{
char *stream_id, dad[1000];
int i, sidf, do_play = 0, streams_enabled = 0;
streams *sid, *sid2;
int do_all = 1;
if (s->sid == -1 && strchr(req, '?'))
setup_stream(req, s);
sidf = get_session_id(s->sid);
sid = get_sid(s->sid);
if (sid)
do_play = sid->do_play;
// else LOG_AND_RETURN(NULL, "No session associated with sock_id %d", s->sock_id);
snprintf(sbuf, size - 1,
"v=0\r\no=- %010d %010d IN IP4 %s\r\ns=SatIPServer:1 %d %d %d\r\nt=0 0\r\n",
sidf, sidf, get_sock_shost(s->sock), tuner_s2, tuner_t + tuner_t2,
tuner_c + tuner_c2);
if (strchr(req, '?'))
do_all = 0;
if ((stream_id = strstr(req, "stream=")))
{
do_all = 0;
sid = get_sid(map_int(stream_id + 7, NULL) - 1);
if (sid == NULL)
return NULL;
}
if (do_all)
{
for (i = 0; i < MAX_STREAMS; i++)
if ((sid2 = get_sid_for(i)))
{
int slen = strlen(sbuf);
streams_enabled++;
snprintf(sbuf + slen, size - slen - 1,
"m=video %d RTP/AVP 33\r\nc=IN IP4 0.0.0.0\r\na=control:stream=%d\r\na=fmtp:33 %s\r\na=%s\r\n",
ntohs(sid2->sa.sin_port), i + 1,
describe_adapter(i, sid2->adapter, dad, sizeof(dad)),
sid2->do_play ? "sendonly" : "inactive");
if (size - slen < 10)
LOG_AND_RETURN(sbuf, "DESCRIBE BUFFER is full");
}
}
if (!streams_enabled)
{
int slen = strlen(sbuf);
int s_id = 1;
char *tp;
if (sid)
{
s_id = sid->sid + 1;
tp = describe_adapter(sid->sid, sid->adapter, dad, sizeof(dad));
}
else
return NULL;
snprintf(sbuf + slen, size - slen - 1,
"m=video 0 RTP/AVP 33\r\nc=IN IP4 0.0.0.0\r\na=control:stream=%d\r\na=fmtp:33 %s\r\nb=AS:5000\r\na=%s\r\n",
s_id, tp, do_play ? "sendonly" : "inactive");
}
return sbuf;
}
// we need to keep the pids from SETUP and PLAY into sid->tp
void set_stream_parameters(int s_id, transponder * t)
{
streams *sid;
sid = get_sid(s_id);
if (!sid || !sid->enabled)
return;
if (t->apids && t->apids[0] >= '0' && t->apids[0] <= '9')
{
strncpy(sid->apids, t->apids, LEN_PIDS);
t->apids = sid->apids;
sid->apids[LEN_PIDS] = 0;
}
if (t->dpids && t->dpids[0] >= '0' && t->dpids[0] <= '9')
{
strncpy(sid->dpids, t->dpids, LEN_PIDS);
t->dpids = sid->dpids;
sid->dpids[LEN_PIDS] = 0;
}
if (t->pids && t->pids[0] >= '0' && t->pids[0] <= '9')
{
strncpy(sid->pids, t->pids, LEN_PIDS);
t->pids = sid->pids;
sid->pids[LEN_PIDS] = 0;
}
if (t->x_pmt && t->x_pmt[0] >= '0' && t->x_pmt[0] <= '9')
{
strncpy(sid->x_pmt, t->x_pmt, LEN_PIDS);
t->x_pmt = sid->x_pmt;
sid->x_pmt[LEN_PIDS] = 0;
}
if (!t->apids)
t->apids = sid->tp.apids;
if (!t->dpids)
t->dpids = sid->tp.dpids;
if (!t->pids)
t->pids = sid->tp.pids;
if (!t->x_pmt)
t->x_pmt = sid->tp.x_pmt;
copy_dvb_parameters(t, &sid->tp);
}
streams *
setup_stream(char *str, sockets * s)
{
streams *sid;
char tmp_str[2000];
transponder t;
strncpy(tmp_str, str, sizeof(tmp_str));
tmp_str[sizeof(tmp_str) - 1] = 0;
detect_dvb_parameters(str, &t);
LOG("Setup stream %d parameters, sock_id %d, handle %d", s->sid, s->id,
s->sock);
if (!get_sid(s->sid)) // create the stream
{
int s_id = streams_add();
if (!(sid = get_sid(s_id)))
LOG_AND_RETURN(NULL, "Could not add a new stream");
mutex_lock(&sid->mutex);
set_sock_lock(s->id, &sid->mutex); // lock the mutex as the sockets_unlock will unlock it
s->sid = s_id;
if (sid->st_sock == -1)
{
if (0 > (sid->st_sock = sockets_add(SOCK_TIMEOUT, NULL, sid->sid,
TYPE_UDP, NULL,
NULL, (socket_action) stream_timeout)))
LOG_AND_RETURN(NULL,
"sockets_add failed for stream timeout sid %d",
sid->sid);
sockets_timeout(sid->st_sock, 200);
set_sock_lock(sid->st_sock, &sid->mutex);
}
LOG("Setup stream done: sid: %d for sock %d handle %d", s_id, s->id,
s->sock);
}
if (!(sid = get_sid(s->sid)))
LOG_AND_RETURN(NULL, "Stream %d not enabled for sock_id %d handle %d",
s->sid, s->id, s->sock);
set_stream_parameters(s->sid, &t);
sid->do_play = 0;
if (sid->adapter >= 0 && !strncasecmp((const char*) s->buf, "SETUP", 5)) // SETUP after PLAY
{
int ad = sid->adapter;
if (!strstr(tmp_str, "addpids") && !strstr(tmp_str, "delpids"))
{
sid->adapter = -1;
close_adapter_for_stream(sid->sid, ad);
}
}
return sid;
}
int start_play(streams * sid, sockets * s)
{
int a_id;
adapter *ad;
if (sid->type == 0 && s->type == TYPE_HTTP)
{
sid->type = STREAM_HTTP;
sid->rsock = s->sock;
memcpy(&sid->sa, &s->sa, sizeof(s->sa));
}
if (sid->type == 0)
{
// LOG("Assuming RTSP over TCP for stream %d, most likely transport was not specified", sid->sid);
// sid->type = STREAM_RTSP_TCP;
// sid->rsock = s->sock;
LOG_AND_RETURN(-454, "No Transport header was specified, for sid %d",
sid->sid);
}
LOG(
"Play for stream %d, type %d, rsock %d, adapter %d, sock_id %d handle %d",
s->sid, sid->type, sid->rsock, sid->adapter, s->id, s->sock);
ad = get_adapter(sid->adapter);
// check if the adapter is not valid or if a slave SID is trying to change frequency
if (!ad || (compare_tunning_parameters(sid->adapter, &sid->tp) && ad->master_sid != sid->sid )) // associate the adapter only at play (not at setup)
{
if (sid->tp.sys == 0 && sid->tp.freq == 0) // play streams with no real parameters ==> sending empty packets to the dest
{
sid->do_play = 1;
LOG_AND_RETURN(0,
"Tune requested with no real parameters, ignoring ...");
}
if(ad)
{
LOG("slave stream tuning to a new frequency, finding a new adapter");
close_adapter_for_stream(sid->sid, ad->id);
}
a_id = get_free_adapter(&sid->tp);
LOG("Got adapter %d on socket %d", a_id, s->id);
if (a_id < 0)
return -404;
sid->adapter = a_id;
set_adapter_for_stream(sid->sid, a_id);
}
if (set_adapter_parameters(sid->adapter, s->sid, &sid->tp) < 0)
return -404;
if (!opts.no_threads && get_socket_thread(sid->st_sock) == get_tid())
{
ad = get_adapter(sid->adapter);
// the stream timeout thread will be running in the same thread with the adapter
if (ad)
set_socket_thread(sid->st_sock, get_socket_thread(ad->sock));
}
sid->do_play = 1;
sid->start_streaming = 0;
sid->tp.apids = sid->tp.dpids = sid->tp.pids = sid->tp.x_pmt = NULL;
return tune(sid->adapter, s->sid);
}
int close_stream(int i)
{
int ad;
streams *sid;
LOG("closing stream %d", i);
if (i < 0 || i >= MAX_STREAMS || !st[i] || !st[i]->enabled)
return 0;
sid = st[i];
mutex_lock(&sid->mutex);
if (!sid->enabled)
{
adapter_unlock(sid->adapter);
mutex_unlock(&sid->mutex);
return 0;
}
mutex_lock(&st_mutex);
sid->enabled = 0;
sid->timeout = 0;
ad = sid->adapter;
sid->adapter = -1;
if (sid->type == STREAM_RTSP_UDP && sid->rsock > 0)
close(sid->rsock);
sid->rsock = -1;
/* if(sid->pids)free(sid->pids);
if(sid->apids)free(sid->apids);
if(sid->dpids)free(sid->dpids);
if(sid->buf)free(sid->buf);
sid->pids = sid->apids = sid->dpids = sid->buf = NULL;
*/
mutex_destroy(&sid->mutex);
if (sid->rtcp_sock > 0 || sid->rtcp > 0)
{
sockets_del(sid->rtcp_sock);
sid->rtcp_sock = -1;
sid->rtcp = -1;
}
if (sid->st_sock > 0)
{
sockets_del(sid->st_sock);
sid->st_sock = -1;
}
if (ad >= 0)
close_adapter_for_stream(i, ad);
sockets_del_for_sid (i);
mutex_unlock(&st_mutex);
LOG("closed stream %d", i);
return 0;
}
int decode_transport(sockets * s, char *arg, char *default_rtp, int start_rtp)
{
char *arg2[10];
int l;
char ra[50];
rtp_prop p;
streams *sid = get_sid(s->sid);
streams *sid2;
if (!sid)
{
LOG("Error: No stream to set transport to, sock_id %d, arg %s ", s->id,
arg);
return -1;
}
l = 0;
sid->rsock_err = 0;
if (arg)
{
if (strstr(arg, "RTP/AVP/TCP"))
{
LOG("Assuming RTSP over TCP for stream %d, arg %s", sid->sid, arg);
sid->type = STREAM_RTSP_TCP;
sid->rsock = s->sock;
memcpy(&sid->sa, &s->sa, sizeof(s->sa));
return 0;
}
l = split(arg2, arg, 10, ';');
}
// LOG("arg2 %s %s %s",arg2[0],arg2[1],arg2[2]);
memset(&p, 0, sizeof(p));
while (l > 0)
{
l--;
if (strcmp("multicast", arg2[l]) == 0)
p.type = TYPE_MCAST;
if (strcmp("unicast", arg2[l]) == 0)
p.type = TYPE_UNICAST;
if (strncmp("ttl=", arg2[l], 4) == 0)
p.ttl = atoi(arg2[l] + 4);
if (strncmp("client_port=", arg2[l], 12) == 0)
p.port = atoi(arg2[l] + 12);
if (strncmp("port=", arg2[l], 5) == 0)
p.port = atoi(arg2[l] + 5);
if (strncmp("destination=", arg2[l], 12) == 0)
strncpy(p.dest, arg2[l] + 12, sizeof(p.dest));
}
if (default_rtp)
strncpy(p.dest, default_rtp, sizeof(p.dest));
if (p.dest[0] == 0 && p.type == TYPE_UNICAST)
get_socket_rhost(s->id, p.dest, sizeof(p.dest));
if (p.dest[0] == 0)
strcpy(p.dest, opts.disc_host);
if (p.port == 0)
p.port = start_rtp;
LOG("decode_transport ->type %d, ttl %d new socket to: %s:%d", p.type,
p.ttl, p.dest, p.port);
if (sid->type != 0)
{
if (sid->type == STREAM_RTSP_UDP && sid->rsock >= 0)
{
int oldport = ntohs(sid->sa.sin_port);
char *oldhost = get_stream_rhost(sid->sid, ra, sizeof(ra));
if (p.port == oldport && !strcmp(p.dest, oldhost))
LOG(
"Transport for this connection is already setup to %s:%d, leaving as it is: sid = %d, handle %d",
p.dest, p.port, sid->sid, sid->rsock)
else
{
LOG(
"Stream has already a transport header associated with it to %s:%d - sid = %d type = %d, closing %d",
oldhost, oldport, sid->sid, sid->type, sid->rsock);
close(sid->rsock);
sid->rsock = -1;
sid->type = 0;
}
}
}
if (sid->type == 0)
{
int i;
struct sockaddr_in sa;
sid->type = STREAM_RTSP_UDP;
if (sid->rtcp_sock > 0 || sid->rtcp)
{
sockets_del(sid->rtcp_sock);
sid->rtcp_sock = -1;
sid->rtcp = -1;
}
if ((sid->rsock = udp_bind_connect(NULL,
opts.start_rtp + (sid->sid * 2), p.dest, p.port, &sid->sa)) < 0)
LOG_AND_RETURN(-1,
"decode_transport failed: UDP connection on rtp port to %s:%d failed",
p.dest, p.port);
set_socket_send_buffer(sid->rsock, opts.output_buffer);
if ((sid->rtcp = udp_bind_connect(NULL,
opts.start_rtp + (sid->sid * 2) + 1, p.dest, p.port + 1, &sa))
< 1)
LOG_AND_RETURN(-1,
"decode_transport failed: UDP connection on rtcp port to %s:%d failed",
p.dest, p.port + 1);
set_linux_socket_timeout(sid->rtcp);
if ((sid->rtcp_sock = sockets_add(sid->rtcp, NULL, sid->sid, TYPE_RTCP,
(socket_action) rtcp_confirm, NULL, NULL)) < 0) // read rtcp
LOG_AND_RETURN(-1, "RTCP socket_add failed");
for (i = 0; i < MAX_STREAMS; i++)
if ((sid2 = get_sid_for(i)) && i != sid->sid
&& sid2->sa.sin_port == sid->sa.sin_port
&& sid2->sa.sin_addr.s_addr == sid->sa.sin_addr.s_addr)
{
LOG(
"Detected stream with the same destination as sid %d: sid %d -> %s:%d, aid: %d",
sid->sid, i, p.dest, p.port, sid2->adapter);
close_stream(i);
}
}
return 0;
}
int streams_add()
{
int i;
streams *ss;
i = add_new_lock((void **) st, MAX_STREAMS, sizeof(streams), &st_mutex);
if (i == -1)
LOG_AND_RETURN(-1, "streams_add failed");
ss = st[i];
ss->enabled = 1;
ss->adapter = -1;
ss->sid = i;
ss->rsock = -1;
ss->rsock_err = 0;
ss->type = 0;
ss->do_play = 0;
ss->iiov = 0;
ss->sp = ss->sb = 0;
memset(&ss->iov, 0, sizeof(ss->iiov));
init_dvb_parameters(&ss->tp);
ss->useragent[0] = 0;
ss->len = 0;
ss->st_sock = -1;
// ss->seq = 0; // set the sequence to 0 for testing purposes - it should be random
ss->ssrc = random();
ss->timeout = opts.timeout_sec;
ss->wtime = ss->rtcp_wtime = getTick();
ss->total_len = 7 * DVB_FRAME; // max 7 packets
mutex_unlock(&ss->mutex);
return i;
}
int
// close all streams for adapter, excepting except
close_streams_for_adapter(int ad, int except)
{
int i;
streams *sid;
if (ad < 0)
return 0;
for (i = 0; i < MAX_STREAMS; i++)
if ((sid = get_sid_for(i)) && sid->adapter == ad)
if (except < 0 || except != i)
close_stream(i);
return 0;
}
int64_t tbw, bw, bwtt;
int bwnotify, sleeping, sleeping_cnt;
uint32_t reads;
int64_t nsecs;
int slow_down;
uint64_t last_sd;
int my_writev(int sock, const struct iovec *iov, int iiov, streams *sid)
{
int rv;
char ra[50];
int log_level = 7;
int64_t stime = 0;
if (sid->timeout == 1)
return -1;
LOGL(log_level, "start writev handle %d, iiov %d", sock, iiov);
if (opts.log == log_level)
stime = getTick();
rv = writev(sock, iov, iiov);
if (opts.log == log_level)
stime = getTick() - stime;
if (rv < 0 && (errno == ECONNREFUSED || errno == EPIPE)) // close the stream int the next second
{
LOGL(0,
"Connection REFUSED on stream %d, closing the stream, remote %s:%d",
sid->sid, get_stream_rhost(sid->sid, ra, sizeof(ra)),
get_stream_rport(sid->sid));
sid->timeout = 1;
}
if (rv < 0)
{
LOG("writev returned %d handle %d, iiov %d errno %d error %s", rv, sock,
iiov, errno, strerror(errno));
}
LOGL(log_level, "writev returned %d handle %d, iiov %d (took %jd ms)", rv,
sock, iiov, stime);
return rv;
}
int send_rtp(streams * sid, const struct iovec *iov, int liov)
{
struct iovec io[MAX_PACK + 3];
char ra[50];
int i, total_len = 0, rv;
unsigned char *rtp_h;
unsigned char rtp_buf[16];
if (sid->rsock_err > 50)
return 0;
rtp_h = rtp_buf + 4;
for (i = 0; i < liov; i++)
total_len += iov[i].iov_len;
memset(&io, 0, sizeof(io));
rtp_buf[0] = 0x24;
rtp_buf[1] = 0;
copy16(rtp_buf, 2, total_len + 12);
copy16(rtp_h, 0, 0x8021);
copy16(rtp_h, 2, sid->seq);
copy32(rtp_h, 4, sid->wtime);
copy32(rtp_h, 8, sid->ssrc);
sid->seq++;
if (sid->type == STREAM_RTSP_UDP)
{
io[0].iov_base = rtp_h;
io[0].iov_len = 12;
}
else
{ // RTSP over TCP
io[0].iov_base = rtp_buf;
io[0].iov_len = 16;
}
memcpy(&io[1], iov, liov * sizeof(struct iovec));
rv = my_writev(sid->rsock, (const struct iovec *) io, liov + 1, sid);
if (opts.bw && (slow_down++ > 20))
{
int64_t tn = getTickUs();
// int interval = (1328 * 20000 / (opts.bw / 1024)) ; // For 1328kb/s we have 1000 packets/s, each 20 packets => 20 000 us
int interval = opts.bw * 10 / 1024;
int result = tn - last_sd;
if ((result > 0) && (result < interval))
{
usleep(result);
sleeping += result;
sleeping_cnt++;
}
if (slow_down > 20)
{
last_sd = tn;
slow_down = 0;
}
}
if (rv < 0)
{
sid->rsock_err++;
LOG("write to handle %d failed: %d, %s, socket err %d %s", sid->rsock,
rv, strerror(errno), sid->rsock_err,
sid->rsock_err > 50 ? "socket blacklisted" : "");
}
else
sid->rsock_err = 0;
if (total_len > 0 && sid->start_streaming == 0)
{
sid->start_streaming = 1;
LOG("Start streaming for stream %d, len %d to handle %d => %s:%d",
sid->sid, total_len, sid->rsock,
get_stream_rhost(sid->sid, ra, sizeof(ra)),
ntohs(sid->sa.sin_port));
}
LOGL(7, "%s: sent %d bytes for stream %d, handle %d seq %d => %s:%d",
__FUNCTION__, total_len, sid->sid, sid->rsock, sid->seq - 1,
get_stream_rhost(sid->sid, ra, sizeof(ra)), ntohs(sid->sa.sin_port));
return rv;
}
int send_rtpb(streams * sid, unsigned char *b, int len)
{
struct iovec iov[2];
iov[0].iov_base = b;
iov[0].iov_len = len;
// LOG("called send_rtpb %X %d",b,len);
return send_rtp(sid, (const struct iovec *) iov, 1);
}
int send_rtcp(int s_id, int64_t ctime)
{
int len, rv = 0;
int total_len = 0;
char dad[1000];
char ra[50];
unsigned char rtcp_buf[1600];
int c_time = (int) (ctime / 1000) & 0xFFFFFFFF;
unsigned char *rtcp = rtcp_buf + 4;
streams *sid = get_sid(s_id);
if (!sid)
LOG_AND_RETURN(0, "Sid is null for s_id %d", s_id);
if (sid->rsock_err > 50)
return 0;
char *a = describe_adapter(s_id, sid->adapter, dad, sizeof(dad));
unsigned int la = strlen(a);
if (la > sizeof(rtcp_buf) - 68)
la = sizeof(rtcp_buf) - 70;
len = la + 16;
if (len % 4 > 0)
len = len - (len % 4) + 4;
// LOG("send_rtcp (sid: %d)-> %s",s_id,a);
// rtp header
rtcp[0] = 0x80; // Begin Sender Report
rtcp[1] = 0xC8;
rtcp[2] = 0;
rtcp[3] = 6;
copy32(rtcp, 4, sid->ssrc);
copy32(rtcp, 8, 0);
copy32(rtcp, 12, ctime);
copy32(rtcp, 16, sid->wtime);
copy32(rtcp, 20, sid->sp);
copy32(rtcp, 24, sid->sb);
rtcp[28] = 0x81; // Begin Source Description
rtcp[29] = 0xCA;
rtcp[30] = 0;
rtcp[31] = 5;
copy32(rtcp, 32, sid->ssrc);
rtcp[36] = 1;
rtcp[37] = 10;
rtcp[38] = 'm';
rtcp[39] = 'i';
rtcp[40] = 'n';
rtcp[41] = 'i';
rtcp[42] = 's';
rtcp[43] = 'a';
rtcp[44] = 't';
rtcp[45] = 'i';
rtcp[46] = 'p';
copy32(rtcp, 47, 0);
rtcp[51] = 0;
rtcp[52] = 0x80;
rtcp[53] = 0xCC;
copy16(rtcp, 54, ((la + 16 + 3) / 4) - 1);
copy32(rtcp, 56, sid->ssrc);
rtcp[60] = 'S';
rtcp[61] = 'E';
rtcp[62] = 'S';
rtcp[63] = '1';
rtcp[64] = 0;
rtcp[65] = 0;
copy16(rtcp, 66, la);
memcpy(rtcp + 68, a, la + 4);
total_len = len + 52;
if (sid->type == STREAM_RTSP_UDP)
rv = send(sid->rtcp, rtcp, total_len, MSG_NOSIGNAL);
else
{
rtcp_buf[0] = 0x24;
rtcp_buf[1] = 1;
copy16(rtcp_buf, 2, total_len);
total_len += 4;
rv = send(sid->rsock, rtcp_buf, total_len, MSG_NOSIGNAL);
}
// if(rv>0)
// sid->rsock_err = 0;
// else
// sid->rsock_err ++;
sid->rtcp_wtime = ctime;
LOGL(7, "%s: sent %d bytes for stream %d, handle %d seq %d => %s:%d",
__FUNCTION__, total_len, sid->sid, sid->rsock, sid->seq - 1,
get_stream_rhost(sid->sid, ra, sizeof(ra)), ntohs(sid->sa.sin_port));
// sid->sp = 0;
// sid->sb = 0;
return rv;
}
void flush_streamb(streams * sid, unsigned char *buf, int rlen, int64_t ctime)
{
int i, rv = 0;
if (sid->type == STREAM_HTTP)
rv = send(sid->rsock, buf, rlen, MSG_NOSIGNAL);
else
for (i = 0; i < rlen; i += DVB_FRAME * 7)
rv += send_rtpb(sid, &buf[i],
((rlen - i) > DVB_FRAME * 7) ? DVB_FRAME * 7 : (rlen - i));
sid->iiov = 0;
sid->wtime = ctime;
sid->len = 0;
if (rv > 0)
{
bw += rv;
sid->sp++;
sid->sb += rv;
}
}
int flush_streami(streams * sid, int64_t ctime)
{
int rv;
if (sid->type == STREAM_HTTP)
rv = my_writev(sid->rsock, sid->iov, sid->iiov, sid);
else
rv = send_rtp(sid, sid->iov, sid->iiov);
#ifdef DEBUG
static int fd, freq, pid;
unsigned char *b, fn[50];
sprintf(fn, "freq=%d.ts", sid->tp.freq/1000);
SPid *p;
fd = open(fn, O_WRONLY);
if(fd < 0)
fd = open(fn, O_CREAT | O_WRONLY, 0666);
if(fd)
{
lseek(fd, 0 , 2);
writev(fd, sid->iov, sid->iiov);
close(fd);
}
#endif
sid->iiov = 0;
sid->wtime = ctime;
sid->len = 0;
if (rv > 0)
{
bw += rv;
sid->sp++;
sid->sb += rv;
}
return rv;
}
int process_packet(unsigned char *b, adapter *ad)
{
int j, cc;
SPid *p;
int _pid = (b[1] & 0x1f) * 256 + b[2];
streams *sid;
int rtime = ad->rtime;
// if( _pid == 8191)
// {
// return 0;
// }
p = find_pid(ad->id, _pid);
if (!p)
p = find_pid(ad->id, 8192);
if ((!p))
{
LOGL(5, "process_packet: pid %d not found", _pid);
ad->pid_err++;
return 0;
}
p->cnt++;
cc = b[3] & 0xF;
if (p->cc == 255)
p->cc = cc;
else if (p->cc == 15)
p->cc = 0;
else
p->cc++;
if (p->cc != cc)
{
LOGL(5,
"PID Continuity error (adapter %d): pid: %03d, Expected CC: %X, Actual CC: %X",
ad->id, _pid, p->cc, cc);
p->err++;
}
p->cc = cc;
if (p->sid[0] == -1)
return 0;
for (j = 0; p->sid[j] > -1 && j < MAX_STREAMS_PER_PID; j++)
{
if ((sid = get_sid(p->sid[j])) && sid->do_play)
{
if (sid->iiov > 7)
{
LOG(
"ERROR: possible writing outside of allocated space iiov > 7 for SID %d PID %d",
sid->sid, _pid);
sid->iiov = 6;
}
sid->iov[sid->iiov].iov_base = b;
sid->iov[sid->iiov++].iov_len = DVB_FRAME;
if (sid->iiov >= 7)
flush_streami(sid, rtime);
}
}
return 0;
}
int process_dmx(sockets * s)
{
void *min, *max;
int i, j, dp;
static int cnt;
streams *sid;
adapter *ad;
int send = 0, flush_all = 0;
int64_t stime;
ad = get_adapter(s->sid);
int rlen = s->rlen;
int64_t ms_ago = s->rtime - ad->rtime;
ad->rtime = s->rtime;
s->rlen = 0;
stime = getTickUs();
LOGL(6,
"process_dmx start flush_all=%d called for adapter %d -> %d out of %d bytes read, %jd ms ago",
flush_all, s->sid, rlen, s->lbuf, ms_ago);
#ifndef DISABLE_TABLES
process_stream(ad, rlen);
#else
if (ad->sid_cnt == 1 && ad->master_sid >= 0 && opts.log < 2) // we have just 1 stream, do not check the pids, send everything to the destination
{
sid = get_sid(ad->master_sid);
if (!sid || sid->enabled != 1)
{
LOG ("Master SID %d not enabled ", ad->master_sid);
return -1;
}
if (sid->len > 0)
flush_streamb (sid, sid->buf, sid->len, s->rtime);
flush_streamb (sid, s->buf, rlen, s->rtime);
}
else
#endif
{
for (dp = 0; dp < rlen; dp += DVB_FRAME)
process_packet(&s->buf[dp], ad);
if (flush_all) // more than 50ms passed since the last write, so we flush our buffers
{
for (i = 0; i < MAX_STREAMS; i++)
if ((sid = st[i]) && (sid->enabled) && sid->adapter == s->sid
&& sid->iiov > 0)
flush_streami(sid, s->rtime);
}
else
{ //move all dvb packets that were not sent out of the s->buf
min = s->buf;
max = &s->buf[rlen];
for (i = 0; i < MAX_STREAMS; i++)
if ((sid = st[i]) && (sid->enabled) && sid->adapter == s->sid
&& sid->iiov > 0)
{
for (j = 0; j < sid->iiov; j++)
if (sid->iov[j].iov_base >= min
&& sid->iov[j].iov_base <= max)
{
if (sid->len + DVB_FRAME >= STREAMS_BUFFER)
{
LOG(
"ERROR: requested to write outside of stream's buffer for sid %d len %d iiov %d - flushing stream's buffer",
i, sid->len, sid->iiov);
flush_streamb(sid, sid->buf, sid->len,
s->rtime);
}
memcpy(&sid->buf[sid->len], sid->iov[j].iov_base,
DVB_FRAME);
sid->iov[j].iov_base = &sid->buf[sid->len];
sid->len += DVB_FRAME;
}
}
}
if (s->rtime - ad->last_sort > 2000)
{
ad->last_sort = s->rtime + 60000;
sort_pids(s->sid);
}
}
nsecs += getTickUs() - stime;
reads++;
// if(!found)LOG("pid not found = %d -> 1:%d 2:%d 1&1f=%d",pid,s->buf[1],s->buf[2],s->buf[1]&0x1f);
// LOG("done send stream");
return 0;
}
int read_dmx(sockets * s)
{
static int cnt;
streams *sid;
adapter *ad;
int send = 0, flush_all = 0, ls, lse;
uint64_t stime;
if (s->rlen % DVB_FRAME != 0)
// s->rlen = ((int) s->rlen / DVB_FRAME) * DVB_FRAME;
return 0;
if (s->rlen == s->lbuf)
cnt++;
else
cnt = 0;
ad = get_adapter(s->sid);
if (!ad)
{
s->rlen = 0;
return 0;
}
if (s->rtime - ad->rtime > 50) // flush buffers every 50ms
{
flush_all = 1; // flush everything that we've read so far
send = 1;
}
if (flush_all && (s->rlen > 20000)) // if the bw/s > 300kB - waiting for the buffer to fill - most likely watching a TV channel and not scanning
send = 0;