Le 9 nov. 2017 10:32 AM, "Nablet Developer" <s...@nablet.com> a écrit :
protocol requires libsrt (https://github.com/Haivision/srt) to be installed Signed-off-by: Nablet Developer <s...@nablet.com> --- configure | 10 ++ libavformat/Makefile | 1 + libavformat/opensrt.c | 418 ++++++++++++++++++++++++++++++ ++++++++++++++++++ libavformat/protocols.c | 1 + 4 files changed, 430 insertions(+) create mode 100644 libavformat/opensrt.c diff --git a/configure b/configure index f396abd..b44df0e 100755 --- a/configure +++ b/configure @@ -293,6 +293,7 @@ External library support: --enable-opengl enable OpenGL rendering [no] --enable-openssl enable openssl, needed for https support if gnutls is not used [no] + --enable-opensrt enable Haivision Open SRT protoco [no] --disable-sndio disable sndio support [autodetect] --disable-schannel disable SChannel SSP, needed for TLS support on Windows if openssl and gnutls are not used [autodetect] @@ -1638,6 +1639,7 @@ EXTERNAL_LIBRARY_LIST=" openal opencl opengl + opensrt " HWACCEL_AUTODETECT_LIBRARY_LIST=" @@ -3139,6 +3141,8 @@ libsmbclient_protocol_deps="libsmbclient gplv3" libssh_protocol_deps="libssh" mmsh_protocol_select="http_protocol" mmst_protocol_select="network" +opensrt_protocol_select="network" +opensrt_protocol_deps="opensrt" rtmp_protocol_conflict="librtmp_protocol" rtmp_protocol_select="tcp_protocol" rtmp_protocol_suggest="zlib" @@ -6102,6 +6106,8 @@ enabled omx && require_header OMX_Core.h enabled omx_rpi && { check_header OMX_Core.h || { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } || die "ERROR: OpenMAX IL headers not found"; } && enable omx +#enabled opensrt && check_lib srt srt/srt.h srt_socket -lsrt +enabled opensrt && require_pkg_config libsrt "srt >= 1.2.0" srt/srt.h srt_socket enabled openssl && { use_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl || use_pkg_config openssl openssl openssl/ssl.h SSL_library_init || check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto || @@ -6156,6 +6162,10 @@ if enabled decklink; then esac fi +if enabled opensrt; then + opensrt_protocol_extralibs="$opensrt_protocol_extralibs -lsrt" +fi + enabled securetransport && check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" && check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" || diff --git a/libavformat/Makefile b/libavformat/Makefile index 146a465..5116d31 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -596,6 +596,7 @@ TLS-OBJS-$(CONFIG_SCHANNEL) += tls_schannel.o OBJS-$(CONFIG_TLS_PROTOCOL) += tls.o $(TLS-OBJS-yes) OBJS-$(CONFIG_UDP_PROTOCOL) += udp.o OBJS-$(CONFIG_UDPLITE_PROTOCOL) += udp.o +OBJS-$(CONFIG_OPENSRT_PROTOCOL) += opensrt.o OBJS-$(CONFIG_UNIX_PROTOCOL) += unix.o # libavdevice dependencies diff --git a/libavformat/opensrt.c b/libavformat/opensrt.c new file mode 100644 index 0000000..bc58368 --- /dev/null +++ b/libavformat/opensrt.c @@ -0,0 +1,418 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * Haivision Open SRT (Secure Reliable Transport) protocol + */ + +#include "avformat.h" +#include "libavutil/avassert.h" +#include "libavutil/parseutils.h" +#include "libavutil/opt.h" +#include "libavutil/time.h" + +#include "internal.h" +#include "network.h" +#include "os_support.h" +#include "url.h" +#if HAVE_POLL_H +#include <poll.h> +#endif + +#include "tcp.h" + +#if CONFIG_OPENSRT_PROTOCOL +#include <srt/srt.h> +#endif + +enum SRTMode { + SRT_MODE_CALLER = 0, + SRT_MODE_LISTENER = 1, + SRT_MODE_RENDEZVOUS = 2 +}; + +typedef struct SRTContext { + struct TCPContext tcp_context; + /* SRT socket options (srt/srt.h) */ + int64_t maxbw; + int pbkeylen; + char * passphrase; + int mss; + int fc; + int ipttl; + int iptos; + int64_t inputbw; + int64_t oheadbw; + int tsbpddelay; + int tlpktdrop; + int nakreport; + int conntimeo; + enum SRTMode mode; +} SRTContext; + +#define D AV_OPT_FLAG_DECODING_PARAM +#define E AV_OPT_FLAG_ENCODING_PARAM +#define OFFSETSRT(x) offsetof(SRTContext, x) +static const AVOption opensrt_options[] = { + TCP_COMMON_OPTS + /* SRT socket options (srt/srt.h) */ + { "maxbw", "maximum bandwidth (bytes per second) that the connection can use", OFFSETSRT(maxbw), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags = D|E }, + { "pbkeylen", "Crypto key len in bytes {16,24,32} Default: 16 (128-bit)", OFFSETSRT(pbkeylen), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 32, .flags = D|E }, + { "passphrase", "Crypto PBKDF2 Passphrase size[0,10..64] 0:disable crypto", OFFSETSRT(passphrase), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = D|E }, + { "mss", "the Maximum Transfer Unit", OFFSETSRT(mss), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, + { "fc", "Flight flag size (window size)", OFFSETSRT(fc), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, + { "ipttl", "IP Time To Live", OFFSETSRT(ipttl), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, + { "iptos", "IP Type of Service", OFFSETSRT(iptos), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, + { "inputbw", "Estimated input stream rate", OFFSETSRT(inputbw), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags = D|E }, + { "oheadbw", "MaxBW ceiling based on % over input stream rate", OFFSETSRT(oheadbw), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags = D|E }, + { "tsbpddelay", "TsbPd receiver delay (mSec) to absorb burst of missed packet retransmission", OFFSETSRT(tsbpddelay), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, + { "tlpktdrop", "Enable receiver pkt drop", OFFSETSRT(tlpktdrop), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, .flags = D|E }, + { "nakreport", "Enable receiver to send periodic NAK reports", OFFSETSRT(nakreport), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, .flags = D|E }, + { "conntimeo", "Connect timeout in msec. Ccaller default: 3000, rendezvous (x 10)", OFFSETSRT(conntimeo), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags = D|E }, + { "mode", "Connection mode (caller, listener, rendezvous)", OFFSETSRT(mode), AV_OPT_TYPE_INT, { .i64 = SRT_MODE_CALLER }, SRT_MODE_CALLER, SRT_MODE_RENDEZVOUS, .flags = D|E }, + { "caller", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = SRT_MODE_CALLER }, INT_MIN, INT_MAX, .flags = D|E }, + { "listener", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = SRT_MODE_LISTENER }, INT_MIN, INT_MAX, .flags = D|E }, + { "rendezvous", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = SRT_MODE_RENDEZVOUS }, INT_MIN, INT_MAX, .flags = D|E }, + { NULL } +}; + +static const AVClass opensrt_class = { + .class_name = "opensrt", + .item_name = av_default_item_name, + .option = opensrt_options, + .version = LIBAVUTIL_VERSION_INT, +}; + +static int opensrt_neterrno(void) +{ + int err = srt_getlasterror(NULL); + if (err == SRT_EASYNCRCV) + return AVERROR(EAGAIN); + return AVERROR(EINVAL); +} + +static int opensrt_socket_nonblock(int socket, int enable) +{ + int ret = srt_setsockopt(socket, 0, SRTO_SNDSYN, &enable, sizeof(enable)); + if (ret < 0) + return ret; + ret = srt_setsockopt(socket, 0, SRTO_RCVSYN, &enable, sizeof(enable)); + return ret; +} + +static int opensrt_poll(struct pollfd *fds, nfds_t nfds, int timeout) +{ + int eid, ret, len = 1; + int modes = fds[0].events; + SRTSOCKET ready[1]; + eid = srt_epoll_create(); + if (eid < 0) + return eid; + ret = srt_epoll_add_usock(eid, fds[0].fd, &modes); + if (ret < 0) { + srt_epoll_release(eid); + return ret; + } + if (fds[0].events & POLLOUT) { + ret = srt_epoll_wait(eid, 0, 0, ready, &len, timeout, 0, 0, 0, 0); + } else { + ret = srt_epoll_wait(eid, ready, &len, 0, 0, timeout, 0, 0, 0, 0); + } + if (ret > 0) { + fds[0].revents = fds[0].events; + } else if (ret == 0) { + fds[0].revents = POLLERR; + } else { + if (srt_getlasterror(NULL) == SRT_ETIMEOUT) + ret = 0; + } + srt_epoll_release(eid); + return ret; +} + +static ssize_t opensrt_send(int sockfd, const void *buf, size_t len, av_unused int flags) +{ + return srt_sendmsg(sockfd, buf, len, -1, 0); +} + +static ssize_t opensrt_recv(int sockfd, void *buf, size_t len, av_unused int flags) +{ + return srt_recvmsg(sockfd, buf, len); +} + +static int opensrt_socket(int domain, int type, int protocol) +{ + type = SOCK_DGRAM; + protocol = 0; + return srt_socket(domain, type, protocol); +} + +static int opensrt_close_socket(int fd) +{ + return srt_close(fd); +} + +static int opensrt_listen(int sockfd, int backlog) +{ + return srt_listen(sockfd, backlog); +} + +static int opensrt_bind(int sockfd, const struct sockaddr *addr, socklen_t addrlen) +{ + return srt_bind(sockfd, addr, addrlen); +} + +static int opensrt_connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen) +{ + return srt_connect(sockfd, addr, addrlen); +} + +static int opensrt_accept(int sockfd, struct sockaddr *addr, socklen_t *addrlen) +{ + return srt_accept(sockfd, addr, addrlen); +} + +static int opensrt_getsockopt(int sockfd, int level, int optname, void *optval, socklen_t *optlen) +{ + if (level == SOL_SOCKET) { + if (optname == SO_RCVBUF) { + optname = SRTO_RCVBUF; + } else if (optname == SO_SNDBUF) { + optname = SRTO_SNDBUF; + } else if (optname == SO_REUSEADDR) { + optname = SRTO_REUSEADDR; + } else if (optname == SO_ERROR && optlen && optval && *optlen == sizeof(int)) { + *(int*)optval = srt_getlasterror(NULL); + srt_clearlasterror(); + return 0; + } else + return -1; + } + return srt_getsockopt(sockfd, level, optname, optval, optlen); +} + +static int opensrt_setsockopt(int sockfd, int level, int optname, const void *optval, socklen_t optlen) +{ + if (level == SOL_SOCKET) { + if (optname == SO_RCVBUF) { + optname = SRTO_RCVBUF; + } else if (optname == SO_SNDBUF) { + optname = SRTO_SNDBUF; + } else if (optname == SO_REUSEADDR) { + optname = SRTO_REUSEADDR; + } else + return -1; + } + return srt_setsockopt(sockfd, level, optname, optval, optlen); +} + +static int opensrt_shutdown(av_unused int sockfd, av_unused int how) +{ + // not implemented in SRT yet + return 0; +} + +const struct socket_api srt_socket_api = { + .poll = opensrt_poll, + .bind = opensrt_bind, + .socket = opensrt_socket, + .listen = opensrt_listen, + .connect = opensrt_connect, + .setsockopt = opensrt_setsockopt, + .getsockopt = opensrt_getsockopt, + .accept = opensrt_accept, + .close = opensrt_close_socket, + .socket_nonblock = opensrt_socket_nonblock, + .neterrno = opensrt_neterrno, + .send = opensrt_send, + .recv = opensrt_recv, + .shutdown = opensrt_shutdown +}; + +/* - 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 opensrt_set_options_post(URLContext *h, int fd) +{ + SRTContext *s = h->priv_data; + + if (s->inputbw >= 0 && srt_setsockopt(fd, 0, SRTO_INPUTBW, &s->inputbw, sizeof(s->inputbw)) < 0) { + av_log(h, AV_LOG_ERROR, "failed to set option SRTO_INPUTBW on socket: %s", srt_getlasterror_str()); + return AVERROR(EIO); + } + if (s->oheadbw >= 0 && srt_setsockopt(fd, 0, SRTO_OHEADBW, &s->oheadbw, sizeof(s->oheadbw)) < 0) { + av_log(h, AV_LOG_ERROR, "failed to set option SRTO_OHEADBW on socket: %s", srt_getlasterror_str()); + 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 opensrt_set_options_pre(URLContext *h, int fd) +{ + SRTContext *s = h->priv_data; + int yes = 1; + + if (s->mode == SRT_MODE_RENDEZVOUS && srt_setsockopt(fd, 0, SRTO_RENDEZVOUS, &yes, sizeof(yes)) < 0) { + av_log(h, AV_LOG_ERROR, "failed to set option SRTO_RENDEZVOUS on socket: %s", srt_getlasterror_str()); + return AVERROR(EIO); + } + if (s->maxbw >= 0 && srt_setsockopt(fd, 0, SRTO_MAXBW, &s->maxbw, sizeof(s->maxbw)) < 0) { + av_log(h, AV_LOG_ERROR, "failed to set option SRTO_MAXBW on socket: %s", srt_getlasterror_str()); + return AVERROR(EIO); + } + if (s->pbkeylen >= 0 && srt_setsockopt(fd, 0, SRTO_PBKEYLEN, &s->pbkeylen, sizeof(s->pbkeylen)) < 0) { + av_log(h, AV_LOG_ERROR, "failed to set option SRTO_PBKEYLEN on socket: %s", srt_getlasterror_str()); + return AVERROR(EIO); + } + if (s->passphrase[0] && srt_setsockopt(fd, 0, SRTO_PASSPHRASE, &s->passphrase, sizeof(s->passphrase)) < 0) { + av_log(h, AV_LOG_ERROR, "failed to set option SRTO_PASSPHRASE on socket: %s", srt_getlasterror_str()); + return AVERROR(EIO); + } + if (s->mss >= 0 && srt_setsockopt(fd, 0, SRTO_MSS, &s->mss, sizeof(s->mss)) < 0) { + av_log(h, AV_LOG_ERROR, "failed to set option SRTO_MSS on socket: %s", srt_getlasterror_str()); + return AVERROR(EIO); + } + if (s->fc >= 0 && srt_setsockopt(fd, 0, SRTO_FC, &s->fc, sizeof(s->fc)) < 0) { + av_log(h, AV_LOG_ERROR, "failed to set option SRTO_FC on socket: %s", srt_getlasterror_str()); + return AVERROR(EIO); + } + if (s->ipttl >= 0 && srt_setsockopt(fd, 0, SRTO_IPTTL, &s->ipttl, sizeof(s->ipttl)) < 0) { + av_log(h, AV_LOG_ERROR, "failed to set option SRTO_IPTTL on socket: %s", srt_getlasterror_str()); + return AVERROR(EIO); + } + if (s->iptos >= 0 && srt_setsockopt(fd, 0, SRTO_IPTOS, &s->iptos, sizeof(s->iptos)) < 0) { + av_log(h, AV_LOG_ERROR, "failed to set option SRTO_IPTOS on socket: %s", srt_getlasterror_str()); + return AVERROR(EIO); + } + if (s->tsbpddelay >= 0 && srt_setsockopt(fd, 0, SRTO_TSBPDDELAY, &s->tsbpddelay, sizeof(s->tsbpddelay)) < 0) { + av_log(h, AV_LOG_ERROR, "failed to set option SRTO_TSBPDDELAY on socket: %s", srt_getlasterror_str()); + return AVERROR(EIO); + } + if (s->tlpktdrop >= 0 && srt_setsockopt(fd, 0, SRTO_TLPKTDROP, &s->tlpktdrop, sizeof(s->tlpktdrop)) < 0) { + av_log(h, AV_LOG_ERROR, "failed to set option SRTO_TLPKTDROP on socket: %s", srt_getlasterror_str()); + return AVERROR(EIO); + } + if (s->nakreport >= 0 && srt_setsockopt(fd, 0, SRTO_NAKREPORT, &s->nakreport, sizeof(s->nakreport)) < 0) { + av_log(h, AV_LOG_ERROR, "failed to set option SRTO_NAKREPORT on socket: %s", srt_getlasterror_str()); + return AVERROR(EIO); + } + if (s->conntimeo >= 0 && srt_setsockopt(fd, 0, SRTO_CONNTIMEO, &s->conntimeo, sizeof(s->conntimeo)) < 0) { + av_log(h, AV_LOG_ERROR, "failed to set option SRTO_CONNTIMEO on socket: %s", srt_getlasterror_str()); + return AVERROR(EIO); + } + return 0; +} + +static int opensrt_open(URLContext *h, const char *uri, int flags) +{ + SRTContext *s = h->priv_data; + const char * p; + char buf[256]; + + if (srt_startup() < 0) { + return AVERROR(EIO); + } + + s->tcp_context.api = &srt_socket_api; + s->tcp_context.set_options_pre = opensrt_set_options_pre; + s->tcp_context.set_options_post = opensrt_set_options_post; + s->tcp_context.proto = "srt"; + /* 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)) { + s->passphrase = av_strndup(buf, strlen(buf)); + } + if (av_find_info_tag(buf, sizeof(buf), "mss", p)) { + s->mss = strtol(buf, NULL, 10); + } + if (av_find_info_tag(buf, sizeof(buf), "fc", p)) { + s->fc = 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 = strtoll(buf, NULL, 10); + } + if (av_find_info_tag(buf, sizeof(buf), "tsbpddelay", p)) { + s->tsbpddelay = strtol(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), "conntimeo", p)) { + s->conntimeo = 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; + } + } + } + return ff_tcp_open(h, uri, flags); +} + +static int opensrt_close(URLContext *h) +{ + int ret = ff_tcp_close(h); + + srt_cleanup(); + + return ret; +} + +const URLProtocol ff_opensrt_protocol = { + .name = "srt", + .url_open = opensrt_open, + .url_accept = ff_tcp_accept, + .url_read = ff_tcp_read, + .url_write = ff_tcp_write, + .url_close = opensrt_close, + .url_get_file_handle = ff_tcp_get_file_handle, + .url_get_short_seek = ff_tcp_get_window_size, + .url_shutdown = ff_tcp_shutdown, + .priv_data_size = sizeof(SRTContext), + .flags = URL_PROTOCOL_FLAG_NETWORK, + .priv_data_class = &opensrt_class, +}; diff --git a/libavformat/protocols.c b/libavformat/protocols.c index 669d74d..823349a 100644 --- a/libavformat/protocols.c +++ b/libavformat/protocols.c @@ -59,6 +59,7 @@ extern const URLProtocol ff_tcp_protocol; extern const URLProtocol ff_tls_protocol; extern const URLProtocol ff_udp_protocol; extern const URLProtocol ff_udplite_protocol; +extern const URLProtocol ff_opensrt_protocol; extern const URLProtocol ff_unix_protocol; extern const URLProtocol ff_librtmp_protocol; extern const URLProtocol ff_librtmpe_protocol; -- 2.7.4 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel Hi I guess you 'll document the options once review is done. Or you could write the texi already which would help testing. Is this like stransmit ? You have to pipe mpegts content ? Regards _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
