/* * The following code is a port of FFmpeg/avformat/libsrt.c for obs-studio. * Port by pkv@obsproject.com. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #pragma once #include #include "obs-ffmpeg-url.h" #include #include #ifdef _WIN32 #include #endif #define POLLING_TIME 100 /// Time in milliseconds between interrupt check /* This is for MPEG-TS (7 TS packets) */ #ifndef SRT_LIVE_DEFAULT_PAYLOAD_SIZE #define SRT_LIVE_DEFAULT_PAYLOAD_SIZE 1316 #endif enum SRTMode { SRT_MODE_CALLER = 0, SRT_MODE_LISTENER = 1, SRT_MODE_RENDEZVOUS = 2 }; typedef struct SRTContext { SRTSOCKET fd; int eid; int64_t rw_timeout; int64_t listen_timeout; int recv_buffer_size; int send_buffer_size; int64_t maxbw; int pbkeylen; char *passphrase; #if SRT_VERSION_VALUE >= 0x010302 int enforced_encryption; int kmrefreshrate; int kmpreannounce; int64_t snddropdelay; #endif int mss; int ffs; int ipttl; int iptos; int64_t inputbw; int oheadbw; int64_t latency; int tlpktdrop; int nakreport; int64_t connect_timeout; int payload_size; int64_t rcvlatency; int64_t peerlatency; enum SRTMode mode; int sndbuf; int rcvbuf; int lossmaxttl; int minversion; char *streamid; char *smoother; int messageapi; SRT_TRANSTYPE transtype; char *localip; char *localport; int linger; int tsbpd; double time; // time in s in order to post logs at definite intervals } SRTContext; static int libsrt_neterrno(URLContext *h) { SRTContext *s = (SRTContext *)h->priv_data; int os_errno; int err = srt_getlasterror(&os_errno); blog(LOG_ERROR, "[obs-ffmpeg mpegts muxer / libsrt]: %s", srt_getlasterror_str()); if (err == SRT_EASYNCRCV || err == SRT_EASYNCSND) return AVERROR(EAGAIN); if (err == SRT_ECONNREJ) { int errj = srt_getrejectreason(s->fd); if (errj == SRT_REJ_BADSECRET) blog(LOG_ERROR, "[obs-ffmpeg mpegts muxer / libsrt]: Wrong password"); else blog(LOG_ERROR, "[obs-ffmpeg mpegts muxer / libsrt]: Connection rejected, %s", srt_rejectreason_str(errj)); } return os_errno ? AVERROR(os_errno) : AVERROR_UNKNOWN; } static int libsrt_getsockopt(URLContext *h, SRTSOCKET fd, SRT_SOCKOPT optname, const char *optnamestr, void *optval, int *optlen) { UNUSED_PARAMETER(h); if (srt_getsockopt(fd, 0, optname, optval, optlen) < 0) { blog(LOG_INFO, "[obs-ffmpeg mpegts muxer / libsrt]: Failed to get option %s on socket: %s", optnamestr, srt_getlasterror_str()); return AVERROR(EIO); } return 0; } static int libsrt_socket_nonblock(SRTSOCKET socket, int enable) { int ret, blocking = enable ? 0 : 1; /* Setting SRTO_{SND,RCV}SYN options to 1 enable blocking mode, setting them to 0 enable non-blocking mode. */ ret = srt_setsockopt(socket, 0, SRTO_SNDSYN, &blocking, sizeof(blocking)); if (ret < 0) return ret; return srt_setsockopt(socket, 0, SRTO_RCVSYN, &blocking, sizeof(blocking)); } static int libsrt_epoll_create(URLContext *h, SRTSOCKET fd, int write) { int modes = SRT_EPOLL_ERR | (write ? SRT_EPOLL_OUT : SRT_EPOLL_IN); int eid = srt_epoll_create(); if (eid < 0) return libsrt_neterrno(h); if (srt_epoll_add_usock(eid, fd, &modes) < 0) { srt_epoll_release(eid); return libsrt_neterrno(h); } return eid; } static int libsrt_network_wait_fd(URLContext *h, int eid, int write) { int ret, len = 1, errlen = 1; SRTSOCKET ready[1]; SRTSOCKET error[1]; SRTContext *s = (SRTContext *)h->priv_data; if (write) { ret = srt_epoll_wait(eid, error, &errlen, ready, &len, POLLING_TIME, 0, 0, 0, 0); } else { ret = srt_epoll_wait(eid, ready, &len, error, &errlen, POLLING_TIME, 0, 0, 0, 0); } if (len == 1 && errlen == 1 && s->mode == SRT_MODE_CALLER) { /* Socket reported in wsock AND rsock signifies an error. */ int reason = srt_getrejectreason(*ready); if (reason == SRT_REJ_BADSECRET || reason == SRT_REJ_UNSECURE || reason == SRT_REJ_TIMEOUT) { blog(LOG_ERROR, "[obs-ffmpeg mpegts muxer / libsrt]: Connection rejected, wrong password or invalid URL"); return OBS_OUTPUT_INVALID_STREAM; } else { blog(LOG_ERROR, "[obs-ffmpeg mpegts muxer / libsrt]: Connection rejected, %s", srt_rejectreason_str(reason)); } } if (ret < 0) { if (srt_getlasterror(NULL) == SRT_ETIMEOUT) ret = AVERROR(EAGAIN); else ret = libsrt_neterrno(h); } else { ret = errlen ? AVERROR(EIO) : 0; } return ret; } int check_interrupt(AVIOInterruptCB *cb) { if (cb && cb->callback) return cb->callback(cb->opaque); return 0; } static int libsrt_network_wait_fd_timeout(URLContext *h, int eid, int write, int64_t timeout, AVIOInterruptCB *int_cb) { int ret; int64_t wait_start = 0; while (1) { if (check_interrupt(int_cb)) return AVERROR_EXIT; ret = libsrt_network_wait_fd(h, eid, write); if (ret != AVERROR(EAGAIN)) return ret; if (timeout > 0) { if (!wait_start) wait_start = av_gettime_relative(); else if (av_gettime_relative() - wait_start > timeout) return AVERROR(ETIMEDOUT); } } } static int libsrt_listen(int eid, SRTSOCKET fd, const struct sockaddr *addr, socklen_t addrlen, URLContext *h, int64_t timeout) { int ret; int reuse = 1; /* Max streamid length plus an extra space for the terminating null character */ char streamid[513]; int streamid_len = sizeof(streamid); if (srt_setsockopt(fd, SOL_SOCKET, SRTO_REUSEADDR, &reuse, sizeof(reuse))) { blog(LOG_WARNING, "[obs-ffmpeg mpegts muxer / libsrt]: setsockopt(SRTO_REUSEADDR) failed"); } if (srt_bind(fd, addr, addrlen)) return libsrt_neterrno(h); if (srt_listen(fd, 1)) return libsrt_neterrno(h); ret = libsrt_network_wait_fd_timeout(h, eid, 0, timeout, &h->interrupt_callback); if (ret < 0) return ret; ret = srt_accept(fd, NULL, NULL); if (ret < 0) return libsrt_neterrno(h); if (libsrt_socket_nonblock(ret, 1) < 0) blog(LOG_DEBUG, "[obs-ffmpeg mpegts muxer / libsrt]: libsrt_socket_nonblock failed"); if (!libsrt_getsockopt(h, ret, SRTO_STREAMID, "SRTO_STREAMID", streamid, &streamid_len)) /* Note: returned streamid_len doesn't count the terminating null character */ blog(LOG_INFO, "[obs-ffmpeg mpegts muxer / libsrt]: Accept streamid [%s], length %d", streamid, streamid_len); return ret; } static int libsrt_listen_connect(int eid, SRTSOCKET fd, const struct sockaddr *addr, socklen_t addrlen, int64_t timeout, URLContext *h, int will_try_next) { int ret; if (srt_connect(fd, addr, addrlen) < 0) return libsrt_neterrno(h); ret = libsrt_network_wait_fd_timeout(h, eid, 1, timeout, &h->interrupt_callback); if (ret < 0) { if (will_try_next) { blog(LOG_WARNING, "[obs-ffmpeg mpegts muxer / libsrt]: Connection to %s failed (%s), trying next address", h->url, av_err2str(ret)); } else { blog(LOG_ERROR, "[obs-ffmpeg mpegts muxer / libsrt]: Connection to %s failed: %s", h->url, av_err2str(ret)); } } return ret; } static int libsrt_setsockopt(URLContext *h, SRTSOCKET fd, SRT_SOCKOPT optname, const char *optnamestr, const void *optval, int optlen) { UNUSED_PARAMETER(h); if (srt_setsockopt(fd, 0, optname, optval, optlen) < 0) { blog(LOG_ERROR, "[obs-ffmpeg mpegts muxer / libsrt]: Failed to set option %s on socket: %s", optnamestr, srt_getlasterror_str()); return AVERROR(EIO); } return 0; } /* - The "POST" options can be altered any time on a connected socket. They MAY have also some meaning when set prior to connecting; such option is SRTO_RCVSYN, which makes connect/accept call asynchronous. Because of that this option is treated special way in this app. */ static int libsrt_set_options_post(URLContext *h, SRTSOCKET fd) { SRTContext *s = (SRTContext *)h->priv_data; if ((s->inputbw >= 0 && libsrt_setsockopt(h, fd, SRTO_INPUTBW, "SRTO_INPUTBW", &s->inputbw, sizeof(s->inputbw)) < 0) || (s->oheadbw >= 0 && libsrt_setsockopt(h, fd, SRTO_OHEADBW, "SRTO_OHEADBW", &s->oheadbw, sizeof(s->oheadbw)) < 0)) { return AVERROR(EIO); } return 0; } /* - The "PRE" options must be set prior to connecting and can't be altered on a connected socket, however if set on a listening socket, they are derived by accept-ed socket. */ static int libsrt_set_options_pre(URLContext *h, SRTSOCKET fd) { SRTContext *s = (SRTContext *)h->priv_data; int yes = 1; int latency = (int)(s->latency / 1000); int rcvlatency = (int)(s->rcvlatency / 1000); int peerlatency = (int)(s->peerlatency / 1000); #if SRT_VERSION_VALUE >= 0x010302 int snddropdelay = s->snddropdelay > 0 ? (int)(s->snddropdelay / 1000) : (int)(s->snddropdelay); #endif int connect_timeout = (int)(s->connect_timeout); if ((s->mode == SRT_MODE_RENDEZVOUS && libsrt_setsockopt(h, fd, SRTO_RENDEZVOUS, "SRTO_RENDEZVOUS", &yes, sizeof(yes)) < 0) || (s->transtype != SRTT_INVALID && libsrt_setsockopt(h, fd, SRTO_TRANSTYPE, "SRTO_TRANSTYPE", &s->transtype, sizeof(s->transtype)) < 0) || (s->maxbw >= 0 && libsrt_setsockopt(h, fd, SRTO_MAXBW, "SRTO_MAXBW", &s->maxbw, sizeof(s->maxbw)) < 0) || (s->pbkeylen >= 0 && libsrt_setsockopt(h, fd, SRTO_PBKEYLEN, "SRTO_PBKEYLEN", &s->pbkeylen, sizeof(s->pbkeylen)) < 0) || (s->passphrase && libsrt_setsockopt(h, fd, SRTO_PASSPHRASE, "SRTO_PASSPHRASE", s->passphrase, (int)strlen(s->passphrase)) < 0) || #if SRT_VERSION_VALUE >= 0x010302 #if SRT_VERSION_VALUE >= 0x010401 (s->enforced_encryption >= 0 && libsrt_setsockopt(h, fd, SRTO_ENFORCEDENCRYPTION, "SRTO_ENFORCEDENCRYPTION", &s->enforced_encryption, sizeof(s->enforced_encryption)) < 0) || #else /* SRTO_STRICTENC == SRTO_ENFORCEDENCRYPTION (53), but for compatibility, we used SRTO_STRICTENC */ (s->enforced_encryption >= 0 && libsrt_setsockopt(h, fd, SRTO_STRICTENC, "SRTO_STRICTENC", &s->enforced_encryption, sizeof(s->enforced_encryption)) < 0) || #endif (s->kmrefreshrate >= 0 && libsrt_setsockopt(h, fd, SRTO_KMREFRESHRATE, "SRTO_KMREFRESHRATE", &s->kmrefreshrate, sizeof(s->kmrefreshrate)) < 0) || (s->kmpreannounce >= 0 && libsrt_setsockopt(h, fd, SRTO_KMPREANNOUNCE, "SRTO_KMPREANNOUNCE", &s->kmpreannounce, sizeof(s->kmpreannounce)) < 0) || (s->snddropdelay >= -1 && libsrt_setsockopt(h, fd, SRTO_SNDDROPDELAY, "SRTO_SNDDROPDELAY", &snddropdelay, sizeof(snddropdelay)) < 0) || #endif (s->mss >= 0 && libsrt_setsockopt(h, fd, SRTO_MSS, "SRTO_MSS", &s->mss, sizeof(s->mss)) < 0) || (s->ffs >= 0 && libsrt_setsockopt(h, fd, SRTO_FC, "SRTO_FC", &s->ffs, sizeof(s->ffs)) < 0) || (s->ipttl >= 0 && libsrt_setsockopt(h, fd, SRTO_IPTTL, "SRTO_IPTTL", &s->ipttl, sizeof(s->ipttl)) < 0) || (s->iptos >= 0 && libsrt_setsockopt(h, fd, SRTO_IPTOS, "SRTO_IPTOS", &s->iptos, sizeof(s->iptos)) < 0) || (s->latency >= 0 && libsrt_setsockopt(h, fd, SRTO_LATENCY, "SRTO_LATENCY", &latency, sizeof(latency)) < 0) || (s->rcvlatency >= 0 && libsrt_setsockopt(h, fd, SRTO_RCVLATENCY, "SRTO_RCVLATENCY", &rcvlatency, sizeof(rcvlatency)) < 0) || (s->peerlatency >= 0 && libsrt_setsockopt(h, fd, SRTO_PEERLATENCY, "SRTO_PEERLATENCY", &peerlatency, sizeof(peerlatency)) < 0) || (s->tlpktdrop >= 0 && libsrt_setsockopt(h, fd, SRTO_TLPKTDROP, "SRTO_TLPKTDROP", &s->tlpktdrop, sizeof(s->tlpktdrop)) < 0) || (s->nakreport >= 0 && libsrt_setsockopt(h, fd, SRTO_NAKREPORT, "SRTO_NAKREPORT", &s->nakreport, sizeof(s->nakreport)) < 0) || (connect_timeout >= 0 && libsrt_setsockopt(h, fd, SRTO_CONNTIMEO, "SRTO_CONNTIMEO", &connect_timeout, sizeof(connect_timeout)) < 0) || (s->sndbuf >= 0 && libsrt_setsockopt(h, fd, SRTO_SNDBUF, "SRTO_SNDBUF", &s->sndbuf, sizeof(s->sndbuf)) < 0) || (s->rcvbuf >= 0 && libsrt_setsockopt(h, fd, SRTO_RCVBUF, "SRTO_RCVBUF", &s->rcvbuf, sizeof(s->rcvbuf)) < 0) || (s->lossmaxttl >= 0 && libsrt_setsockopt(h, fd, SRTO_LOSSMAXTTL, "SRTO_LOSSMAXTTL", &s->lossmaxttl, sizeof(s->lossmaxttl)) < 0) || (s->minversion >= 0 && libsrt_setsockopt(h, fd, SRTO_MINVERSION, "SRTO_MINVERSION", &s->minversion, sizeof(s->minversion)) < 0) || (s->streamid && libsrt_setsockopt(h, fd, SRTO_STREAMID, "SRTO_STREAMID", s->streamid, (int)strlen(s->streamid)) < 0) || #if SRT_VERSION_VALUE >= 0x010401 (s->smoother && libsrt_setsockopt(h, fd, SRTO_CONGESTION, "SRTO_CONGESTION", s->smoother, (int)strlen(s->smoother)) < 0) || #else (s->smoother && libsrt_setsockopt(h, fd, SRTO_SMOOTHER, "SRTO_SMOOTHER", s->smoother, (int)strlen(s->smoother)) < 0) || #endif (s->messageapi >= 0 && libsrt_setsockopt(h, fd, SRTO_MESSAGEAPI, "SRTO_MESSAGEAPI", &s->messageapi, sizeof(s->messageapi)) < 0) || (s->payload_size >= 0 && libsrt_setsockopt(h, fd, SRTO_PAYLOADSIZE, "SRTO_PAYLOADSIZE", &s->payload_size, sizeof(s->payload_size)) < 0) || (/*(h->flags & AVIO_FLAG_WRITE) &&*/ libsrt_setsockopt(h, fd, SRTO_SENDER, "SRTO_SENDER", &yes, sizeof(yes)) < 0) || (s->tsbpd >= 0 && libsrt_setsockopt(h, fd, SRTO_TSBPDMODE, "SRTO_TSBPDMODE", &s->tsbpd, sizeof(s->tsbpd)) < 0)) { return AVERROR(EIO); } if (s->linger >= 0) { struct linger lin; lin.l_linger = s->linger; lin.l_onoff = lin.l_linger > 0 ? 1 : 0; if (libsrt_setsockopt(h, fd, SRTO_LINGER, "SRTO_LINGER", &lin, sizeof(lin)) < 0) return AVERROR(EIO); } return 0; } static int libsrt_setup(URLContext *h, const char *uri) { struct addrinfo hints = {0}, *ai, *cur_ai; int port; SRTSOCKET fd; SRTContext *s = (SRTContext *)h->priv_data; const char *p; char buf[1024]; int ret; char hostname[1024], proto[1024], path[1024]; char portstr[10]; int64_t open_timeout = 0; int eid; struct sockaddr_in la; av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname), &port, path, sizeof(path), uri); if (strcmp(proto, "srt")) // should not happen ! return AVERROR(EINVAL); if (port <= 0 || port >= 65536) { blog(LOG_ERROR, "[obs-ffmpeg mpegts muxer / libsrt]: Port missing in uri"); return OBS_OUTPUT_CONNECT_FAILED; } p = strchr(uri, '?'); if (p) { if (av_find_info_tag(buf, sizeof(buf), "timeout", p)) { s->rw_timeout = strtoll(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "listen_timeout", p)) { s->listen_timeout = strtoll(buf, NULL, 10); } } if (s->rw_timeout >= 0) { open_timeout = h->rw_timeout = s->rw_timeout; } hints.ai_family = AF_UNSPEC; hints.ai_socktype = SOCK_DGRAM; snprintf(portstr, sizeof(portstr), "%d", port); if (s->mode == SRT_MODE_LISTENER) hints.ai_flags |= AI_PASSIVE; ret = getaddrinfo(hostname[0] ? hostname : NULL, portstr, &hints, &ai); if (ret) { blog(LOG_ERROR, "[obs-ffmpeg mpegts muxer / libsrt]: Failed to resolve hostname %s: %s", hostname, #ifdef _WIN32 gai_strerrorA(ret) #else gai_strerror(ret) #endif ); return OBS_OUTPUT_CONNECT_FAILED; } cur_ai = ai; if (s->mode == SRT_MODE_RENDEZVOUS) { if (s->localip == NULL || s->localport == NULL) { blog(LOG_ERROR, "Invalid adapter configuration\n"); return OBS_OUTPUT_CONNECT_FAILED; } blog(LOG_DEBUG, "[obs-ffmpeg mpegts muxer / libsrt]: Adapter options %s:%s\n", s->localip, s->localport); int lp = strtol(s->localport, NULL, 10); if (lp <= 0 || lp >= 65536) { blog(LOG_ERROR, "[obs-ffmpeg mpegts muxer / libsrt]: Local port missing in URL\n"); return OBS_OUTPUT_CONNECT_FAILED; } la.sin_family = AF_INET; la.sin_port = htons(port); inet_pton(AF_INET, s->localip, &la.sin_addr.s_addr); } restart: fd = srt_create_socket(); if (fd < 0) { ret = libsrt_neterrno(h); goto fail; } if ((ret = libsrt_set_options_pre(h, fd)) < 0) { goto fail; } /* Set the socket's send or receive buffer sizes, if specified. If unspecified or setting fails, system default is used. */ if (s->recv_buffer_size > 0) { srt_setsockopt(fd, SOL_SOCKET, SRTO_UDP_RCVBUF, &s->recv_buffer_size, sizeof(s->recv_buffer_size)); } if (s->send_buffer_size > 0) { srt_setsockopt(fd, SOL_SOCKET, SRTO_UDP_SNDBUF, &s->send_buffer_size, sizeof(s->send_buffer_size)); } if (libsrt_socket_nonblock(fd, 1) < 0) blog(LOG_DEBUG, "[obs-ffmpeg mpegts muxer / libsrt]: libsrt_socket_nonblock failed"); if (s->mode == SRT_MODE_LISTENER) { int read_eid = ret = libsrt_epoll_create(h, fd, 0); if (ret < 0) goto fail1; // multi-client ret = libsrt_listen(read_eid, fd, cur_ai->ai_addr, (socklen_t)cur_ai->ai_addrlen, h, s->listen_timeout); srt_epoll_release(read_eid); if (ret < 0) goto fail1; srt_close(fd); fd = ret; } else { int write_eid = ret = libsrt_epoll_create(h, fd, 1); if (ret < 0) goto fail1; if (s->mode == SRT_MODE_RENDEZVOUS) { if (srt_bind(fd, (struct sockaddr *)&la, sizeof(struct sockaddr_in))) { ret = libsrt_neterrno(h); srt_epoll_release(write_eid); goto fail1; } } ret = libsrt_listen_connect(write_eid, fd, cur_ai->ai_addr, (socklen_t)(cur_ai->ai_addrlen), open_timeout, h, !!cur_ai->ai_next); srt_epoll_release(write_eid); if (ret < 0) { if (ret == AVERROR_EXIT) goto fail1; else goto fail; } } if ((ret = libsrt_set_options_post(h, fd)) < 0) { goto fail; } int packet_size = 0; int optlen = sizeof(packet_size); ret = libsrt_getsockopt(h, fd, SRTO_PAYLOADSIZE, "SRTO_PAYLOADSIZE", &packet_size, &optlen); if (ret < 0) goto fail1; if (packet_size > 0) h->max_packet_size = packet_size; ret = eid = libsrt_epoll_create(h, fd, 1 /*flags & AVIO_FLAG_WRITE*/); if (eid < 0) goto fail1; s->fd = fd; s->eid = eid; freeaddrinfo(ai); return 0; fail: if (cur_ai->ai_next) { /* Retry with the next sockaddr */ cur_ai = cur_ai->ai_next; if (fd >= 0) srt_close(fd); ret = 0; goto restart; } fail1: if (fd >= 0) srt_close(fd); freeaddrinfo(ai); return ret; } static void libsrt_set_defaults(SRTContext *s) { s->rw_timeout = -1; s->listen_timeout = -1; s->send_buffer_size = -1; s->recv_buffer_size = -1; s->payload_size = SRT_LIVE_DEFAULT_PAYLOAD_SIZE; s->maxbw = -1; s->pbkeylen = -1; s->mss = -1; s->ffs = -1; s->ipttl = -1; s->iptos = -1; s->inputbw = -1; s->oheadbw = -1; s->latency = -1; s->rcvlatency = -1; s->peerlatency = -1; s->tlpktdrop = -1; s->nakreport = -1; s->connect_timeout = -1; s->mode = SRT_MODE_CALLER; s->sndbuf = -1; s->rcvbuf = -1; s->lossmaxttl = -1; s->minversion = -1; s->smoother = NULL; s->messageapi = -1; s->transtype = SRTT_LIVE; s->linger = -1; s->tsbpd = -1; } static int libsrt_open(URLContext *h, const char *uri) { SRTContext *s = (SRTContext *)h->priv_data; const char *p; char buf[1024]; int ret = 0; if (srt_startup() < 0) { blog(LOG_ERROR, "[obs-ffmpeg mpegts muxer / libsrt]: libsrt failed to load"); return OBS_OUTPUT_CONNECT_FAILED; } else { blog(LOG_INFO, "[obs-ffmpeg mpegts muxer / libsrt]: libsrt version %s loaded", SRT_VERSION_STRING); } libsrt_set_defaults(s); /* SRT options (srt/srt.h) */ p = strchr(uri, '?'); if (p) { if (av_find_info_tag(buf, sizeof(buf), "maxbw", p)) { s->maxbw = strtoll(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "pbkeylen", p)) { s->pbkeylen = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "passphrase", p)) { av_freep(&s->passphrase); s->passphrase = av_strndup(buf, strlen(buf)); } #if SRT_VERSION_VALUE >= 0x010302 if (av_find_info_tag(buf, sizeof(buf), "enforced_encryption", p)) { s->enforced_encryption = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "kmrefreshrate", p)) { s->kmrefreshrate = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "kmpreannounce", p)) { s->kmpreannounce = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "snddropdelay", p)) { s->snddropdelay = strtoll(buf, NULL, 10); } #endif if (av_find_info_tag(buf, sizeof(buf), "mss", p)) { s->mss = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "ffs", p)) { s->ffs = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "ipttl", p)) { s->ipttl = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "iptos", p)) { s->iptos = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "inputbw", p)) { s->inputbw = strtoll(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "oheadbw", p)) { s->oheadbw = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "latency", p)) { s->latency = strtoll(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "tsbpddelay", p)) { s->latency = strtoll(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "rcvlatency", p)) { s->rcvlatency = strtoll(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "peerlatency", p)) { s->peerlatency = strtoll(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "tlpktdrop", p)) { s->tlpktdrop = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "nakreport", p)) { s->nakreport = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "connect_timeout", p)) { s->connect_timeout = strtoll(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "payload_size", p) || av_find_info_tag(buf, sizeof(buf), "pkt_size", p)) { s->payload_size = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "mode", p)) { if (!strcmp(buf, "caller")) { s->mode = SRT_MODE_CALLER; } else if (!strcmp(buf, "listener")) { s->mode = SRT_MODE_LISTENER; } else if (!strcmp(buf, "rendezvous")) { s->mode = SRT_MODE_RENDEZVOUS; } else { ret = AVERROR(EINVAL); goto err; } } if (av_find_info_tag(buf, sizeof(buf), "sndbuf", p)) { s->sndbuf = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "rcvbuf", p)) { s->rcvbuf = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "lossmaxttl", p)) { s->lossmaxttl = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "minversion", p)) { s->minversion = strtol(buf, NULL, 0); } if (av_find_info_tag(buf, sizeof(buf), "streamid", p)) { av_freep(&s->streamid); s->streamid = av_strdup(buf); if (!s->streamid) { ret = AVERROR(ENOMEM); goto err; } } if (av_find_info_tag(buf, sizeof(buf), "smoother", p)) { av_freep(&s->smoother); s->smoother = av_strdup(buf); if (!s->smoother) { ret = AVERROR(ENOMEM); goto err; } } if (av_find_info_tag(buf, sizeof(buf), "messageapi", p)) { s->messageapi = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "transtype", p)) { if (!strcmp(buf, "live")) { s->transtype = SRTT_LIVE; } else if (!strcmp(buf, "file")) { s->transtype = SRTT_FILE; } else { ret = AVERROR(EINVAL); goto err; } } if (av_find_info_tag(buf, sizeof(buf), "linger", p)) { s->linger = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "localip", p)) { s->localip = av_strndup(buf, strlen(buf)); } if (av_find_info_tag(buf, sizeof(buf), "localport", p)) { s->localport = av_strndup(buf, strlen(buf)); } } ret = libsrt_setup(h, uri); if (ret < 0) goto err; #ifdef _WIN32 struct timeb timebuffer; ftime(&timebuffer); s->time = (double)timebuffer.time + 0.001 * (double)timebuffer.millitm; #else struct timespec timesp; clock_gettime(CLOCK_REALTIME, ×p); s->time = (double)timesp.tv_sec + 0.000000001 * (double)timesp.tv_nsec; #endif return 0; err: av_freep(&s->smoother); av_freep(&s->streamid); srt_cleanup(); return ret; } static int libsrt_write(URLContext *h, const uint8_t *buf, int size) { SRTContext *s = (SRTContext *)h->priv_data; int ret; SRT_TRACEBSTATS perf; ret = libsrt_network_wait_fd_timeout(h, s->eid, 1, h->rw_timeout, &h->interrupt_callback); if (ret) return ret; ret = srt_send(s->fd, (char *)buf, size); if (ret < 0) { ret = libsrt_neterrno(h); } else { /* log every 60 seconds the rtt and link bandwidth * rtt: round-trip time * link bandwidth: bandwidth from ingest to egress */ #ifdef _WIN32 struct timeb timebuffer; ftime(&timebuffer); double time = (double)timebuffer.time + 0.001 * (double)timebuffer.millitm; #else struct timespec timesp; clock_gettime(CLOCK_REALTIME, ×p); double time = (double)timesp.tv_sec + 0.000000001 * (double)timesp.tv_nsec; #endif if (time > (s->time + 60.0)) { srt_bistats(s->fd, &perf, 0, 1); blog(LOG_DEBUG, "[obs-ffmpeg mpegts muxer / libsrt]: RTT [%.2f ms], Link Bandwidth [%.1f Mbps]", perf.msRTT, perf.mbpsBandwidth); s->time = time; } } return ret; } static int libsrt_close(URLContext *h) { SRTContext *s = (SRTContext *)h->priv_data; if (!s) return 0; if (s->streamid) av_freep(&s->streamid); if (s->passphrase) av_freep(&s->passphrase); /* Log stream stats. */ SRT_TRACEBSTATS perf = {0}; srt_bstats(s->fd, &perf, 1); blog(LOG_INFO, "---------------------------------"); blog(LOG_INFO, "[obs-ffmpeg mpegts muxer / libsrt]: Session Summary\n" "\ttime elapsed [%.1f sec]\n" "\tmean speed [%.1f Mbp]\n" "\ttotal bytes sent [%.1f MB]\n" "\tbytes retransmitted [%.1f %%]\n" "\tbytes dropped [%.1f %%]\n", (double)perf.msTimeStamp / 1000.0, perf.mbpsSendRate, (double)perf.byteSentTotal / 1000000.0, perf.byteSentTotal ? perf.byteRetransTotal / perf.byteSentTotal * 100.0 : 0, perf.byteSentTotal ? perf.byteSndDropTotal / perf.byteSentTotal * 100.0 : 0); srt_epoll_release(s->eid); int err = srt_close(s->fd); if (err < 0) { blog(LOG_ERROR, "[obs-ffmpeg mpegts muxer / libsrt]: %s", srt_getlasterror_str()); return -1; } srt_cleanup(); blog(LOG_INFO, "[obs-ffmpeg mpegts muxer / libsrt]: SRT connection closed"); return 0; }