2002-07-04 13:42:57 +03:00
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/*
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* RTP network protocol
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2009-01-19 17:46:40 +02:00
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* Copyright (c) 2002 Fabrice Bellard
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2002-07-04 13:42:57 +03:00
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*
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2006-10-07 18:30:46 +03:00
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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2002-07-04 13:42:57 +03:00
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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2006-10-07 18:30:46 +03:00
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* version 2.1 of the License, or (at your option) any later version.
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2002-07-04 13:42:57 +03:00
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*
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2006-10-07 18:30:46 +03:00
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* FFmpeg is distributed in the hope that it will be useful,
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2002-07-04 13:42:57 +03:00
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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2006-10-07 18:30:46 +03:00
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* License along with FFmpeg; if not, write to the Free Software
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2006-01-13 00:43:26 +02:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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2002-07-04 13:42:57 +03:00
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*/
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2008-04-16 01:22:49 +03:00
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/**
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2010-04-20 17:45:34 +03:00
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* @file
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2008-04-16 01:22:49 +03:00
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* RTP protocol
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*/
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2011-02-16 10:52:38 +02:00
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#include "libavutil/parseutils.h"
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2008-05-09 14:56:36 +03:00
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#include "libavutil/avstring.h"
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2002-07-04 13:42:57 +03:00
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#include "avformat.h"
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2011-03-08 11:35:52 +02:00
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#include "avio_internal.h"
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2013-07-31 12:29:32 +03:00
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#include "rtp.h"
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#include "rtpproto.h"
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2011-03-31 17:25:10 +03:00
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#include "url.h"
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2002-07-04 13:42:57 +03:00
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2002-07-24 20:38:20 +03:00
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#include <stdarg.h>
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2010-03-15 01:59:48 +02:00
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#include "internal.h"
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2007-02-04 19:05:44 +02:00
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#include "network.h"
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2007-11-27 13:42:09 +02:00
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#include "os_support.h"
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2002-07-04 13:42:57 +03:00
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#include <fcntl.h>
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2011-01-28 04:12:21 +02:00
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#if HAVE_POLL_H
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#include <sys/poll.h>
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2008-08-14 17:29:18 +03:00
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#endif
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2002-07-04 13:42:57 +03:00
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typedef struct RTPContext {
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URLContext *rtp_hd, *rtcp_hd;
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2013-07-26 22:37:00 +03:00
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int rtp_fd, rtcp_fd, nb_ssm_include_addrs, nb_ssm_exclude_addrs;
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struct sockaddr_storage **ssm_include_addrs, **ssm_exclude_addrs;
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2013-08-13 13:20:42 +03:00
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int write_to_source;
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struct sockaddr_storage last_rtp_source, last_rtcp_source;
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socklen_t last_rtp_source_len, last_rtcp_source_len;
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2002-07-04 13:42:57 +03:00
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} RTPContext;
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/**
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* If no filename is given to av_open_input_file because you want to
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* get the local port first, then you must call this function to set
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* the remote server address.
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*
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2010-07-02 13:49:29 +03:00
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* @param h media file context
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2002-07-04 13:42:57 +03:00
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* @param uri of the remote server
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* @return zero if no error.
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*/
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2008-04-16 01:22:49 +03:00
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2011-10-12 12:37:42 +03:00
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int ff_rtp_set_remote_url(URLContext *h, const char *uri)
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2002-07-04 13:42:57 +03:00
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{
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RTPContext *s = h->priv_data;
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char hostname[256];
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2013-07-31 11:48:28 +03:00
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int port, rtcp_port;
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const char *p;
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2002-07-24 20:38:20 +03:00
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2002-07-04 13:42:57 +03:00
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char buf[1024];
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char path[1024];
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2005-12-17 20:14:38 +02:00
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2010-06-27 17:16:46 +03:00
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av_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port,
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2010-03-08 11:05:03 +02:00
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path, sizeof(path), uri);
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2013-07-31 11:48:28 +03:00
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rtcp_port = port + 1;
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p = strchr(uri, '?');
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if (p) {
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if (av_find_info_tag(buf, sizeof(buf), "rtcpport", p)) {
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rtcp_port = strtol(buf, NULL, 10);
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}
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}
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2002-07-04 13:42:57 +03:00
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2010-03-06 00:35:21 +02:00
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ff_url_join(buf, sizeof(buf), "udp", NULL, hostname, port, "%s", path);
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2011-03-08 11:35:52 +02:00
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ff_udp_set_remote_url(s->rtp_hd, buf);
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2002-07-04 13:42:57 +03:00
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2013-07-31 11:48:28 +03:00
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ff_url_join(buf, sizeof(buf), "udp", NULL, hostname, rtcp_port, "%s", path);
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2011-03-08 11:35:52 +02:00
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ff_udp_set_remote_url(s->rtcp_hd, buf);
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2002-07-04 13:42:57 +03:00
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return 0;
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}
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2013-06-27 10:53:00 +03:00
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static struct addrinfo* rtp_resolve_host(const char *hostname, int port,
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int type, int family, int flags)
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{
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struct addrinfo hints = { 0 }, *res = 0;
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int error;
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2013-07-18 21:12:14 +03:00
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char service[16];
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2013-06-27 10:53:00 +03:00
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2013-07-18 21:12:14 +03:00
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snprintf(service, sizeof(service), "%d", port);
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2013-06-27 10:53:00 +03:00
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hints.ai_socktype = type;
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hints.ai_family = family;
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2013-07-18 21:12:14 +03:00
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hints.ai_flags = flags;
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if ((error = getaddrinfo(hostname, service, &hints, &res))) {
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2013-06-27 10:53:00 +03:00
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res = NULL;
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av_log(NULL, AV_LOG_ERROR, "rtp_resolve_host: %s\n", gai_strerror(error));
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}
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return res;
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}
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2002-07-04 13:42:57 +03:00
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2013-07-18 21:12:14 +03:00
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static int compare_addr(const struct sockaddr_storage *a,
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const struct sockaddr_storage *b)
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{
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if (a->ss_family != b->ss_family)
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return 1;
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if (a->ss_family == AF_INET) {
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return (((const struct sockaddr_in *)a)->sin_addr.s_addr !=
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((const struct sockaddr_in *)b)->sin_addr.s_addr);
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}
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2013-08-15 10:36:20 +03:00
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#if HAVE_STRUCT_SOCKADDR_IN6
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2013-07-18 21:12:14 +03:00
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if (a->ss_family == AF_INET6) {
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const uint8_t *s6_addr_a = ((const struct sockaddr_in6 *)a)->sin6_addr.s6_addr;
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const uint8_t *s6_addr_b = ((const struct sockaddr_in6 *)b)->sin6_addr.s6_addr;
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return memcmp(s6_addr_a, s6_addr_b, 16);
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}
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#endif
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return 1;
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}
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2002-07-04 13:42:57 +03:00
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2013-08-13 13:20:42 +03:00
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static int get_port(const struct sockaddr_storage *ss)
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{
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if (ss->ss_family == AF_INET)
|
2014-09-17 00:11:47 +03:00
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return ntohs(((const struct sockaddr_in *)ss)->sin_port);
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2013-08-15 01:22:13 +03:00
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#if HAVE_STRUCT_SOCKADDR_IN6
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2013-08-13 13:20:42 +03:00
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if (ss->ss_family == AF_INET6)
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2014-09-17 00:11:47 +03:00
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return ntohs(((const struct sockaddr_in6 *)ss)->sin6_port);
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2013-08-13 13:20:42 +03:00
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#endif
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return 0;
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}
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static void set_port(struct sockaddr_storage *ss, int port)
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{
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if (ss->ss_family == AF_INET)
|
2014-09-17 00:11:47 +03:00
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((struct sockaddr_in *)ss)->sin_port = htons(port);
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2013-08-15 01:22:13 +03:00
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#if HAVE_STRUCT_SOCKADDR_IN6
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2013-08-13 13:20:42 +03:00
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else if (ss->ss_family == AF_INET6)
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2014-09-17 00:11:47 +03:00
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((struct sockaddr_in6 *)ss)->sin6_port = htons(port);
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2013-08-13 13:20:42 +03:00
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#endif
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}
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2013-07-26 22:37:00 +03:00
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static int rtp_check_source_lists(RTPContext *s, struct sockaddr_storage *source_addr_ptr)
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{
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int i;
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if (s->nb_ssm_exclude_addrs) {
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for (i = 0; i < s->nb_ssm_exclude_addrs; i++) {
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if (!compare_addr(source_addr_ptr, s->ssm_exclude_addrs[i]))
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return 1;
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}
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}
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if (s->nb_ssm_include_addrs) {
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for (i = 0; i < s->nb_ssm_include_addrs; i++) {
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if (!compare_addr(source_addr_ptr, s->ssm_include_addrs[i]))
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return 0;
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}
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return 1;
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}
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return 0;
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}
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2008-04-16 01:22:49 +03:00
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/**
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* add option to url of the form:
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* "http://host:port/path?option1=val1&option2=val2...
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*/
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2011-06-17 10:31:11 +03:00
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static av_printf_format(3, 4) void url_add_option(char *buf, int buf_size, const char *fmt, ...)
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2002-07-24 20:38:20 +03:00
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{
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char buf1[1024];
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va_list ap;
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va_start(ap, fmt);
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if (strchr(buf, '?'))
|
2007-06-24 14:27:12 +03:00
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av_strlcat(buf, "&", buf_size);
|
2002-07-24 20:38:20 +03:00
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else
|
2007-06-24 14:27:12 +03:00
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av_strlcat(buf, "?", buf_size);
|
2002-07-24 20:38:20 +03:00
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vsnprintf(buf1, sizeof(buf1), fmt, ap);
|
2007-06-24 14:27:12 +03:00
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av_strlcat(buf, buf1, buf_size);
|
2002-07-24 20:38:20 +03:00
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va_end(ap);
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}
|
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|
2003-02-10 11:35:32 +02:00
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static void build_udp_url(char *buf, int buf_size,
|
2005-12-22 03:10:11 +02:00
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const char *hostname, int port,
|
2008-04-15 22:27:39 +03:00
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int local_port, int ttl,
|
2013-07-18 20:04:16 +03:00
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int max_packet_size, int connect,
|
2014-05-23 16:31:17 +03:00
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int dscp,
|
2013-07-26 22:37:00 +03:00
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const char *include_sources,
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const char *exclude_sources)
|
2002-07-24 20:38:20 +03:00
|
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{
|
2010-03-06 00:35:21 +02:00
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ff_url_join(buf, buf_size, "udp", NULL, hostname, port, NULL);
|
2002-07-24 20:38:20 +03:00
|
|
|
if (local_port >= 0)
|
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|
|
url_add_option(buf, buf_size, "localport=%d", local_port);
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|
|
if (ttl >= 0)
|
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url_add_option(buf, buf_size, "ttl=%d", ttl);
|
2008-04-15 22:27:39 +03:00
|
|
|
if (max_packet_size >=0)
|
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|
|
url_add_option(buf, buf_size, "pkt_size=%d", max_packet_size);
|
2011-01-06 17:16:09 +02:00
|
|
|
if (connect)
|
|
|
|
url_add_option(buf, buf_size, "connect=1");
|
2014-05-23 16:31:17 +03:00
|
|
|
if (dscp >= 0)
|
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|
|
url_add_option(buf, buf_size, "dscp=%d", dscp);
|
2011-07-25 16:50:56 +03:00
|
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|
url_add_option(buf, buf_size, "fifo_size=0");
|
2013-07-26 22:37:00 +03:00
|
|
|
if (include_sources && include_sources[0])
|
|
|
|
url_add_option(buf, buf_size, "sources=%s", include_sources);
|
|
|
|
if (exclude_sources && exclude_sources[0])
|
|
|
|
url_add_option(buf, buf_size, "block=%s", exclude_sources);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void rtp_parse_addr_list(URLContext *h, char *buf,
|
|
|
|
struct sockaddr_storage ***address_list_ptr,
|
|
|
|
int *address_list_size_ptr)
|
|
|
|
{
|
|
|
|
struct addrinfo *ai = NULL;
|
|
|
|
struct sockaddr_storage *source_addr;
|
|
|
|
char tmp = '\0', *p = buf, *next;
|
|
|
|
|
|
|
|
/* Resolve all of the IPs */
|
|
|
|
|
|
|
|
while (p && p[0]) {
|
|
|
|
next = strchr(p, ',');
|
|
|
|
|
|
|
|
if (next) {
|
|
|
|
tmp = *next;
|
|
|
|
*next = '\0';
|
|
|
|
}
|
|
|
|
|
|
|
|
ai = rtp_resolve_host(p, 0, SOCK_DGRAM, AF_UNSPEC, 0);
|
|
|
|
if (ai) {
|
|
|
|
source_addr = av_mallocz(sizeof(struct sockaddr_storage));
|
2014-10-18 18:58:41 +03:00
|
|
|
if (!source_addr) {
|
|
|
|
freeaddrinfo(ai);
|
2013-07-26 22:37:00 +03:00
|
|
|
break;
|
2014-10-18 18:58:41 +03:00
|
|
|
}
|
2013-07-26 22:37:00 +03:00
|
|
|
|
|
|
|
memcpy(source_addr, ai->ai_addr, ai->ai_addrlen);
|
|
|
|
freeaddrinfo(ai);
|
|
|
|
dynarray_add(address_list_ptr, address_list_size_ptr, source_addr);
|
|
|
|
} else {
|
|
|
|
av_log(h, AV_LOG_WARNING, "Unable to resolve %s\n", p);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (next) {
|
|
|
|
*next = tmp;
|
|
|
|
p = next + 1;
|
|
|
|
} else {
|
|
|
|
p = NULL;
|
|
|
|
}
|
|
|
|
}
|
2002-07-24 20:38:20 +03:00
|
|
|
}
|
|
|
|
|
2008-04-16 01:22:49 +03:00
|
|
|
/**
|
2002-07-24 20:38:20 +03:00
|
|
|
* url syntax: rtp://host:port[?option=val...]
|
2010-04-19 14:40:45 +03:00
|
|
|
* option: 'ttl=n' : set the ttl value (for multicast only)
|
|
|
|
* 'rtcpport=n' : set the remote rtcp port to n
|
|
|
|
* 'localrtpport=n' : set the local rtp port to n
|
|
|
|
* 'localrtcpport=n' : set the local rtcp port to n
|
|
|
|
* 'pkt_size=n' : set max packet size
|
2011-01-06 17:16:09 +02:00
|
|
|
* 'connect=0/1' : do a connect() on the UDP socket
|
2013-08-13 12:19:57 +03:00
|
|
|
* 'sources=ip[,ip]' : list allowed source IP addresses
|
|
|
|
* 'block=ip[,ip]' : list disallowed source IP addresses
|
2013-08-13 13:20:42 +03:00
|
|
|
* 'write_to_source=0/1' : send packets to the source address of the latest received packet
|
2014-05-23 16:31:17 +03:00
|
|
|
* 'dscp=n' : set DSCP value to n (QoS)
|
2010-04-19 14:40:45 +03:00
|
|
|
* deprecated option:
|
|
|
|
* 'localport=n' : set the local port to n
|
2002-07-24 20:38:20 +03:00
|
|
|
*
|
2010-04-19 14:40:45 +03:00
|
|
|
* if rtcpport isn't set the rtcp port will be the rtp port + 1
|
|
|
|
* if local rtp port isn't set any available port will be used for the local
|
|
|
|
* rtp and rtcp ports
|
|
|
|
* if the local rtcp port is not set it will be the local rtp port + 1
|
2002-07-24 20:38:20 +03:00
|
|
|
*/
|
2008-04-16 01:22:49 +03:00
|
|
|
|
2002-07-04 13:42:57 +03:00
|
|
|
static int rtp_open(URLContext *h, const char *uri, int flags)
|
|
|
|
{
|
2011-12-01 12:44:21 +03:00
|
|
|
RTPContext *s = h->priv_data;
|
2010-04-19 14:40:45 +03:00
|
|
|
int rtp_port, rtcp_port,
|
2011-05-09 16:50:03 +03:00
|
|
|
ttl, connect,
|
2014-05-23 16:31:17 +03:00
|
|
|
local_rtp_port, local_rtcp_port, max_packet_size, dscp;
|
2013-07-26 22:37:00 +03:00
|
|
|
char hostname[256], include_sources[1024] = "", exclude_sources[1024] = "";
|
2002-07-04 13:42:57 +03:00
|
|
|
char buf[1024];
|
|
|
|
char path[1024];
|
2002-07-24 20:38:20 +03:00
|
|
|
const char *p;
|
2013-10-20 11:53:09 +03:00
|
|
|
int i, max_retry_count = 3;
|
2005-12-17 20:14:38 +02:00
|
|
|
|
2010-06-27 17:16:46 +03:00
|
|
|
av_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &rtp_port,
|
2010-03-08 11:05:03 +02:00
|
|
|
path, sizeof(path), uri);
|
2002-07-24 20:38:20 +03:00
|
|
|
/* extract parameters */
|
|
|
|
ttl = -1;
|
2010-04-19 14:40:45 +03:00
|
|
|
rtcp_port = rtp_port+1;
|
|
|
|
local_rtp_port = -1;
|
|
|
|
local_rtcp_port = -1;
|
2008-04-15 22:27:39 +03:00
|
|
|
max_packet_size = -1;
|
2011-01-06 17:16:09 +02:00
|
|
|
connect = 0;
|
2014-05-23 16:31:17 +03:00
|
|
|
dscp = -1;
|
2008-04-15 22:27:39 +03:00
|
|
|
|
2002-07-24 20:38:20 +03:00
|
|
|
p = strchr(uri, '?');
|
|
|
|
if (p) {
|
2011-02-16 10:52:38 +02:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "ttl", p)) {
|
2002-07-24 20:38:20 +03:00
|
|
|
ttl = strtol(buf, NULL, 10);
|
|
|
|
}
|
2011-02-16 10:52:38 +02:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "rtcpport", p)) {
|
2010-04-19 14:40:45 +03:00
|
|
|
rtcp_port = strtol(buf, NULL, 10);
|
|
|
|
}
|
2011-02-16 10:52:38 +02:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "localport", p)) {
|
2010-04-19 14:40:45 +03:00
|
|
|
local_rtp_port = strtol(buf, NULL, 10);
|
|
|
|
}
|
2011-02-16 10:52:38 +02:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "localrtpport", p)) {
|
2010-04-19 14:40:45 +03:00
|
|
|
local_rtp_port = strtol(buf, NULL, 10);
|
|
|
|
}
|
2011-02-16 10:52:38 +02:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "localrtcpport", p)) {
|
2010-04-19 14:40:45 +03:00
|
|
|
local_rtcp_port = strtol(buf, NULL, 10);
|
2002-07-24 20:38:20 +03:00
|
|
|
}
|
2011-02-16 10:52:38 +02:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "pkt_size", p)) {
|
2008-04-15 22:27:39 +03:00
|
|
|
max_packet_size = strtol(buf, NULL, 10);
|
|
|
|
}
|
2011-02-16 10:52:38 +02:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "connect", p)) {
|
2011-01-06 17:16:09 +02:00
|
|
|
connect = strtol(buf, NULL, 10);
|
|
|
|
}
|
2013-08-13 13:20:42 +03:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "write_to_source", p)) {
|
|
|
|
s->write_to_source = strtol(buf, NULL, 10);
|
|
|
|
}
|
2014-05-23 16:31:17 +03:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "dscp", p)) {
|
|
|
|
dscp = strtol(buf, NULL, 10);
|
|
|
|
}
|
2013-07-18 20:04:16 +03:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "sources", p)) {
|
2013-07-26 22:37:00 +03:00
|
|
|
av_strlcpy(include_sources, buf, sizeof(include_sources));
|
|
|
|
rtp_parse_addr_list(h, buf, &s->ssm_include_addrs, &s->nb_ssm_include_addrs);
|
|
|
|
}
|
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "block", p)) {
|
|
|
|
av_strlcpy(exclude_sources, buf, sizeof(exclude_sources));
|
|
|
|
rtp_parse_addr_list(h, buf, &s->ssm_exclude_addrs, &s->nb_ssm_exclude_addrs);
|
2013-06-27 10:53:00 +03:00
|
|
|
}
|
2002-07-24 20:38:20 +03:00
|
|
|
}
|
2002-07-04 13:42:57 +03:00
|
|
|
|
2013-10-20 11:53:09 +03:00
|
|
|
for (i = 0;i < max_retry_count;i++) {
|
|
|
|
build_udp_url(buf, sizeof(buf),
|
|
|
|
hostname, rtp_port, local_rtp_port, ttl, max_packet_size,
|
2014-05-23 16:31:17 +03:00
|
|
|
connect, dscp, include_sources, exclude_sources);
|
2013-10-20 11:53:09 +03:00
|
|
|
if (ffurl_open(&s->rtp_hd, buf, flags, &h->interrupt_callback, NULL) < 0)
|
|
|
|
goto fail;
|
|
|
|
local_rtp_port = ff_udp_get_local_port(s->rtp_hd);
|
|
|
|
if(local_rtp_port == 65535) {
|
|
|
|
local_rtp_port = -1;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (local_rtcp_port<0) {
|
|
|
|
local_rtcp_port = local_rtp_port + 1;
|
|
|
|
build_udp_url(buf, sizeof(buf),
|
|
|
|
hostname, rtcp_port, local_rtcp_port, ttl, max_packet_size,
|
2014-05-23 16:31:17 +03:00
|
|
|
connect, dscp, include_sources, exclude_sources);
|
2013-10-20 11:53:09 +03:00
|
|
|
if (ffurl_open(&s->rtcp_hd, buf, flags, &h->interrupt_callback, NULL) < 0) {
|
|
|
|
local_rtp_port = local_rtcp_port = -1;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
build_udp_url(buf, sizeof(buf),
|
|
|
|
hostname, rtcp_port, local_rtcp_port, ttl, max_packet_size,
|
2014-05-23 16:31:17 +03:00
|
|
|
connect, dscp, include_sources, exclude_sources);
|
2013-10-20 11:53:09 +03:00
|
|
|
if (ffurl_open(&s->rtcp_hd, buf, flags, &h->interrupt_callback, NULL) < 0)
|
|
|
|
goto fail;
|
|
|
|
break;
|
|
|
|
}
|
2005-12-17 20:14:38 +02:00
|
|
|
|
2002-07-04 13:42:57 +03:00
|
|
|
/* just to ease handle access. XXX: need to suppress direct handle
|
|
|
|
access */
|
2011-03-31 18:51:24 +03:00
|
|
|
s->rtp_fd = ffurl_get_file_handle(s->rtp_hd);
|
|
|
|
s->rtcp_fd = ffurl_get_file_handle(s->rtcp_hd);
|
2002-07-04 13:42:57 +03:00
|
|
|
|
2011-03-31 18:58:04 +03:00
|
|
|
h->max_packet_size = s->rtp_hd->max_packet_size;
|
2002-07-04 13:42:57 +03:00
|
|
|
h->is_streamed = 1;
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
fail:
|
|
|
|
if (s->rtp_hd)
|
2011-03-31 18:36:06 +03:00
|
|
|
ffurl_close(s->rtp_hd);
|
2002-07-04 13:42:57 +03:00
|
|
|
if (s->rtcp_hd)
|
2011-03-31 18:36:06 +03:00
|
|
|
ffurl_close(s->rtcp_hd);
|
2007-07-19 18:23:32 +03:00
|
|
|
return AVERROR(EIO);
|
2002-07-04 13:42:57 +03:00
|
|
|
}
|
|
|
|
|
2003-02-11 18:35:48 +02:00
|
|
|
static int rtp_read(URLContext *h, uint8_t *buf, int size)
|
2002-07-04 13:42:57 +03:00
|
|
|
{
|
|
|
|
RTPContext *s = h->priv_data;
|
2013-07-31 12:21:47 +03:00
|
|
|
int len, n, i;
|
2011-01-28 04:12:21 +02:00
|
|
|
struct pollfd p[2] = {{s->rtp_fd, POLLIN, 0}, {s->rtcp_fd, POLLIN, 0}};
|
2013-07-26 20:24:06 +03:00
|
|
|
int poll_delay = h->flags & AVIO_FLAG_NONBLOCK ? 0 : 100;
|
2013-08-13 13:20:42 +03:00
|
|
|
struct sockaddr_storage *addrs[2] = { &s->last_rtp_source, &s->last_rtcp_source };
|
|
|
|
socklen_t *addr_lens[2] = { &s->last_rtp_source_len, &s->last_rtcp_source_len };
|
2011-01-28 04:12:21 +02:00
|
|
|
|
2002-07-04 13:42:57 +03:00
|
|
|
for(;;) {
|
2011-11-06 23:34:24 +03:00
|
|
|
if (ff_check_interrupt(&h->interrupt_callback))
|
2011-03-13 01:42:27 +02:00
|
|
|
return AVERROR_EXIT;
|
2013-07-26 20:24:06 +03:00
|
|
|
n = poll(p, 2, poll_delay);
|
2002-07-04 13:42:57 +03:00
|
|
|
if (n > 0) {
|
2013-07-31 12:21:47 +03:00
|
|
|
/* first try RTCP, then RTP */
|
|
|
|
for (i = 1; i >= 0; i--) {
|
|
|
|
if (!(p[i].revents & POLLIN))
|
2013-07-18 21:12:14 +03:00
|
|
|
continue;
|
2013-08-13 13:20:42 +03:00
|
|
|
*addr_lens[i] = sizeof(*addrs[i]);
|
2013-07-31 12:21:47 +03:00
|
|
|
len = recvfrom(p[i].fd, buf, size, 0,
|
2013-08-13 13:20:42 +03:00
|
|
|
(struct sockaddr *)addrs[i], addr_lens[i]);
|
2002-07-04 13:42:57 +03:00
|
|
|
if (len < 0) {
|
2011-02-19 20:14:11 +02:00
|
|
|
if (ff_neterrno() == AVERROR(EAGAIN) ||
|
|
|
|
ff_neterrno() == AVERROR(EINTR))
|
2002-07-04 13:42:57 +03:00
|
|
|
continue;
|
2007-07-19 18:23:32 +03:00
|
|
|
return AVERROR(EIO);
|
2002-07-04 13:42:57 +03:00
|
|
|
}
|
2013-08-13 13:20:42 +03:00
|
|
|
if (rtp_check_source_lists(s, addrs[i]))
|
2013-07-18 21:12:14 +03:00
|
|
|
continue;
|
2013-07-31 12:21:47 +03:00
|
|
|
return len;
|
2002-07-04 13:42:57 +03:00
|
|
|
}
|
2010-03-05 10:15:20 +02:00
|
|
|
} else if (n < 0) {
|
2011-02-19 20:14:11 +02:00
|
|
|
if (ff_neterrno() == AVERROR(EINTR))
|
2010-03-26 18:04:38 +02:00
|
|
|
continue;
|
2010-03-05 10:15:20 +02:00
|
|
|
return AVERROR(EIO);
|
2002-07-04 13:42:57 +03:00
|
|
|
}
|
2013-07-26 20:24:06 +03:00
|
|
|
if (h->flags & AVIO_FLAG_NONBLOCK)
|
|
|
|
return AVERROR(EAGAIN);
|
2002-07-04 13:42:57 +03:00
|
|
|
}
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
2010-06-01 10:46:23 +03:00
|
|
|
static int rtp_write(URLContext *h, const uint8_t *buf, int size)
|
2002-07-04 13:42:57 +03:00
|
|
|
{
|
|
|
|
RTPContext *s = h->priv_data;
|
2002-07-24 20:38:20 +03:00
|
|
|
int ret;
|
2002-07-04 13:42:57 +03:00
|
|
|
URLContext *hd;
|
2005-12-17 20:14:38 +02:00
|
|
|
|
2013-07-31 12:45:33 +03:00
|
|
|
if (size < 2)
|
|
|
|
return AVERROR(EINVAL);
|
|
|
|
|
2014-12-09 16:05:14 +02:00
|
|
|
if ((buf[0] & 0xc0) != (RTP_VERSION << 6))
|
2014-12-07 01:42:06 +02:00
|
|
|
av_log(h, AV_LOG_WARNING, "Data doesn't look like RTP packets, "
|
|
|
|
"make sure the RTP muxer is used\n");
|
|
|
|
|
2013-08-13 13:20:42 +03:00
|
|
|
if (s->write_to_source) {
|
|
|
|
int fd;
|
|
|
|
struct sockaddr_storage *source, temp_source;
|
|
|
|
socklen_t *source_len, temp_len;
|
|
|
|
if (!s->last_rtp_source.ss_family && !s->last_rtcp_source.ss_family) {
|
|
|
|
av_log(h, AV_LOG_ERROR,
|
|
|
|
"Unable to send packet to source, no packets received yet\n");
|
|
|
|
// Intentionally not returning an error here
|
|
|
|
return size;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (RTP_PT_IS_RTCP(buf[1])) {
|
|
|
|
fd = s->rtcp_fd;
|
|
|
|
source = &s->last_rtcp_source;
|
|
|
|
source_len = &s->last_rtcp_source_len;
|
|
|
|
} else {
|
|
|
|
fd = s->rtp_fd;
|
|
|
|
source = &s->last_rtp_source;
|
|
|
|
source_len = &s->last_rtp_source_len;
|
|
|
|
}
|
|
|
|
if (!source->ss_family) {
|
|
|
|
source = &temp_source;
|
|
|
|
source_len = &temp_len;
|
|
|
|
if (RTP_PT_IS_RTCP(buf[1])) {
|
|
|
|
temp_source = s->last_rtp_source;
|
|
|
|
temp_len = s->last_rtp_source_len;
|
|
|
|
set_port(source, get_port(source) + 1);
|
|
|
|
av_log(h, AV_LOG_INFO,
|
|
|
|
"Not received any RTCP packets yet, inferring peer port "
|
|
|
|
"from the RTP port\n");
|
|
|
|
} else {
|
|
|
|
temp_source = s->last_rtcp_source;
|
|
|
|
temp_len = s->last_rtcp_source_len;
|
|
|
|
set_port(source, get_port(source) - 1);
|
|
|
|
av_log(h, AV_LOG_INFO,
|
|
|
|
"Not received any RTP packets yet, inferring peer port "
|
|
|
|
"from the RTCP port\n");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
|
|
|
|
ret = ff_network_wait_fd(fd, 1);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
ret = sendto(fd, buf, size, 0, (struct sockaddr *) source,
|
|
|
|
*source_len);
|
|
|
|
|
|
|
|
return ret < 0 ? ff_neterrno() : ret;
|
|
|
|
}
|
|
|
|
|
2012-02-16 19:31:03 +03:00
|
|
|
if (RTP_PT_IS_RTCP(buf[1])) {
|
2002-07-04 13:42:57 +03:00
|
|
|
/* RTCP payload type */
|
|
|
|
hd = s->rtcp_hd;
|
|
|
|
} else {
|
|
|
|
/* RTP payload type */
|
|
|
|
hd = s->rtp_hd;
|
|
|
|
}
|
|
|
|
|
2011-03-31 17:48:01 +03:00
|
|
|
ret = ffurl_write(hd, buf, size);
|
2002-07-04 13:42:57 +03:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rtp_close(URLContext *h)
|
|
|
|
{
|
|
|
|
RTPContext *s = h->priv_data;
|
2013-07-26 22:37:00 +03:00
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < s->nb_ssm_include_addrs; i++)
|
2014-12-24 14:00:34 +02:00
|
|
|
av_freep(&s->ssm_include_addrs[i]);
|
2013-07-26 22:37:00 +03:00
|
|
|
av_freep(&s->ssm_include_addrs);
|
|
|
|
for (i = 0; i < s->nb_ssm_exclude_addrs; i++)
|
2014-12-24 14:00:34 +02:00
|
|
|
av_freep(&s->ssm_exclude_addrs[i]);
|
2013-07-26 22:37:00 +03:00
|
|
|
av_freep(&s->ssm_exclude_addrs);
|
2002-07-04 13:42:57 +03:00
|
|
|
|
2011-03-31 18:36:06 +03:00
|
|
|
ffurl_close(s->rtp_hd);
|
|
|
|
ffurl_close(s->rtcp_hd);
|
2002-07-04 13:42:57 +03:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2010-04-19 14:40:45 +03:00
|
|
|
* Return the local rtp port used by the RTP connection
|
2010-07-02 13:49:29 +03:00
|
|
|
* @param h media file context
|
2010-04-19 14:40:45 +03:00
|
|
|
* @return the local port number
|
|
|
|
*/
|
|
|
|
|
2011-10-12 12:37:42 +03:00
|
|
|
int ff_rtp_get_local_rtp_port(URLContext *h)
|
2010-04-19 14:40:45 +03:00
|
|
|
{
|
|
|
|
RTPContext *s = h->priv_data;
|
2011-03-08 11:35:52 +02:00
|
|
|
return ff_udp_get_local_port(s->rtp_hd);
|
2002-07-04 13:42:57 +03:00
|
|
|
}
|
|
|
|
|
2010-04-19 14:40:45 +03:00
|
|
|
/**
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* Return the local rtcp port used by the RTP connection
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2010-07-02 13:49:29 +03:00
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* @param h media file context
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2010-04-19 14:40:45 +03:00
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* @return the local port number
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*/
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2011-10-12 12:37:42 +03:00
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int ff_rtp_get_local_rtcp_port(URLContext *h)
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2010-04-19 14:40:45 +03:00
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{
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RTPContext *s = h->priv_data;
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2011-03-08 11:35:52 +02:00
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return ff_udp_get_local_port(s->rtcp_hd);
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2010-04-19 14:40:45 +03:00
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}
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2009-03-03 19:04:51 +02:00
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static int rtp_get_file_handle(URLContext *h)
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{
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RTPContext *s = h->priv_data;
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return s->rtp_fd;
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}
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2002-07-04 13:42:57 +03:00
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2012-08-17 19:38:59 +03:00
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static int rtp_get_multi_file_handle(URLContext *h, int **handles,
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int *numhandles)
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{
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2010-08-25 20:32:59 +03:00
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RTPContext *s = h->priv_data;
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2012-08-17 19:38:59 +03:00
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int *hs = *handles = av_malloc(sizeof(**handles) * 2);
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if (!hs)
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return AVERROR(ENOMEM);
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hs[0] = s->rtp_fd;
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hs[1] = s->rtcp_fd;
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*numhandles = 2;
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return 0;
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2010-08-25 20:32:59 +03:00
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}
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2011-01-26 00:03:28 +02:00
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URLProtocol ff_rtp_protocol = {
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2012-08-17 19:38:59 +03:00
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.name = "rtp",
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.url_open = rtp_open,
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.url_read = rtp_read,
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.url_write = rtp_write,
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.url_close = rtp_close,
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.url_get_file_handle = rtp_get_file_handle,
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.url_get_multi_file_handle = rtp_get_multi_file_handle,
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.priv_data_size = sizeof(RTPContext),
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.flags = URL_PROTOCOL_FLAG_NETWORK,
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2002-07-04 13:42:57 +03:00
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};
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