X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Frtpproto.c;h=dba1d35b03c8fd2c7a540f7b61730c511e057a4d;hb=ec679eb4530174fe8d1e06c6010597539f6c1c97;hp=71a4a05ded47bfb36f4d127e74cfa1268a529401;hpb=0bd586c50dc27ec38ca94e58f50030544d729463;p=ffmpeg diff --git a/libavformat/rtpproto.c b/libavformat/rtpproto.c index 71a4a05ded4..dba1d35b03c 100644 --- a/libavformat/rtpproto.c +++ b/libavformat/rtpproto.c @@ -1,35 +1,46 @@ /* * RTP network protocol - * Copyright (c) 2002 Fabrice Bellard. + * Copyright (c) 2002 Fabrice Bellard * - * This library is free software; you can redistribute it and/or + * This file is part of Libav. + * + * Libav 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 of the License, or (at your option) any later version. + * version 2.1 of the License, or (at your option) any later version. * - * This library is distributed in the hope that it will be useful, + * Libav 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 this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ + +/** + * @file + * RTP protocol + */ + +#include "libavutil/parseutils.h" +#include "libavutil/avstring.h" #include "avformat.h" +#include "avio_internal.h" +#include "rtpdec.h" +#include "url.h" #include #include -#include -#include -#include -#ifndef __BEOS__ -# include -#else -# include "barpainet.h" -#endif -#include +#include "internal.h" +#include "network.h" +#include "os_support.h" #include +#if HAVE_POLL_H +#include +#endif +#include #define RTP_TX_BUF_SIZE (64 * 1024) #define RTP_RX_BUF_SIZE (128 * 1024) @@ -44,10 +55,11 @@ typedef struct RTPContext { * get the local port first, then you must call this function to set * the remote server address. * - * @param s1 media file context + * @param h media file context * @param uri of the remote server * @return zero if no error. */ + int rtp_set_remote_url(URLContext *h, const char *uri) { RTPContext *s = h->priv_data; @@ -56,187 +68,226 @@ int rtp_set_remote_url(URLContext *h, const char *uri) char buf[1024]; char path[1024]; - - url_split(NULL, 0, hostname, sizeof(hostname), &port, - path, sizeof(path), uri); - snprintf(buf, sizeof(buf), "udp://%s:%d%s", hostname, port, path); - udp_set_remote_url(s->rtp_hd, buf); + av_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, + path, sizeof(path), uri); - snprintf(buf, sizeof(buf), "udp://%s:%d%s", hostname, port + 1, path); - udp_set_remote_url(s->rtcp_hd, buf); + ff_url_join(buf, sizeof(buf), "udp", NULL, hostname, port, "%s", path); + ff_udp_set_remote_url(s->rtp_hd, buf); + + ff_url_join(buf, sizeof(buf), "udp", NULL, hostname, port + 1, "%s", path); + ff_udp_set_remote_url(s->rtcp_hd, buf); return 0; } -/* add option to url of the form: - "http://host:port/path?option1=val1&option2=val2... */ -static void url_add_option(char *buf, int buf_size, const char *fmt, ...) +/** + * add option to url of the form: + * "http://host:port/path?option1=val1&option2=val2... + */ + +static av_printf_format(3, 4) void url_add_option(char *buf, int buf_size, const char *fmt, ...) { char buf1[1024]; va_list ap; va_start(ap, fmt); if (strchr(buf, '?')) - pstrcat(buf, buf_size, "&"); + av_strlcat(buf, "&", buf_size); else - pstrcat(buf, buf_size, "?"); + av_strlcat(buf, "?", buf_size); vsnprintf(buf1, sizeof(buf1), fmt, ap); - pstrcat(buf, buf_size, buf1); + av_strlcat(buf, buf1, buf_size); va_end(ap); } static void build_udp_url(char *buf, int buf_size, - const char *hostname, int port, - int local_port, int multicast, int ttl) + const char *hostname, int port, + int local_port, int ttl, + int max_packet_size, int connect) { - snprintf(buf, buf_size, "udp://%s:%d", hostname, port); + ff_url_join(buf, buf_size, "udp", NULL, hostname, port, NULL); if (local_port >= 0) url_add_option(buf, buf_size, "localport=%d", local_port); - if (multicast) - url_add_option(buf, buf_size, "multicast=1", multicast); if (ttl >= 0) url_add_option(buf, buf_size, "ttl=%d", ttl); + if (max_packet_size >=0) + url_add_option(buf, buf_size, "pkt_size=%d", max_packet_size); + if (connect) + url_add_option(buf, buf_size, "connect=1"); } -/* +/** * url syntax: rtp://host:port[?option=val...] - * option: 'multicast=1' : enable multicast - * 'ttl=n' : set the ttl value (for multicast only) - * 'localport=n' : set the local port to n + * 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 + * 'connect=0/1' : do a connect() on the UDP socket + * deprecated option: + * 'localport=n' : set the local port to n * + * 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 */ + static int rtp_open(URLContext *h, const char *uri, int flags) { RTPContext *s; - int port, is_output, is_multicast, ttl, local_port; + int rtp_port, rtcp_port, + ttl, connect, + local_rtp_port, local_rtcp_port, max_packet_size; char hostname[256]; char buf[1024]; char path[1024]; const char *p; - - is_output = (flags & URL_WRONLY); s = av_mallocz(sizeof(RTPContext)); if (!s) - return -ENOMEM; + return AVERROR(ENOMEM); h->priv_data = s; - - url_split(NULL, 0, hostname, sizeof(hostname), &port, - path, sizeof(path), uri); + + av_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &rtp_port, + path, sizeof(path), uri); /* extract parameters */ - is_multicast = 0; ttl = -1; - local_port = -1; + rtcp_port = rtp_port+1; + local_rtp_port = -1; + local_rtcp_port = -1; + max_packet_size = -1; + connect = 0; + p = strchr(uri, '?'); if (p) { - is_multicast = find_info_tag(buf, sizeof(buf), "multicast", p); - if (find_info_tag(buf, sizeof(buf), "ttl", p)) { + if (av_find_info_tag(buf, sizeof(buf), "ttl", p)) { ttl = strtol(buf, NULL, 10); } - if (find_info_tag(buf, sizeof(buf), "localport", p)) { - local_port = strtol(buf, NULL, 10); + if (av_find_info_tag(buf, sizeof(buf), "rtcpport", p)) { + rtcp_port = strtol(buf, NULL, 10); + } + if (av_find_info_tag(buf, sizeof(buf), "localport", p)) { + local_rtp_port = strtol(buf, NULL, 10); + } + if (av_find_info_tag(buf, sizeof(buf), "localrtpport", p)) { + local_rtp_port = strtol(buf, NULL, 10); + } + if (av_find_info_tag(buf, sizeof(buf), "localrtcpport", p)) { + local_rtcp_port = strtol(buf, NULL, 10); + } + if (av_find_info_tag(buf, sizeof(buf), "pkt_size", p)) { + max_packet_size = strtol(buf, NULL, 10); + } + if (av_find_info_tag(buf, sizeof(buf), "connect", p)) { + connect = strtol(buf, NULL, 10); } } build_udp_url(buf, sizeof(buf), - hostname, port, local_port, is_multicast, ttl); - if (url_open(&s->rtp_hd, buf, flags) < 0) + hostname, rtp_port, local_rtp_port, ttl, max_packet_size, + connect); + if (ffurl_open(&s->rtp_hd, buf, flags) < 0) goto fail; - local_port = udp_get_local_port(s->rtp_hd); - /* XXX: need to open another connexion if the port is not even */ + if (local_rtp_port>=0 && local_rtcp_port<0) + local_rtcp_port = ff_udp_get_local_port(s->rtp_hd) + 1; - /* well, should suppress localport in path */ - build_udp_url(buf, sizeof(buf), - hostname, port + 1, local_port + 1, is_multicast, ttl); - if (url_open(&s->rtcp_hd, buf, flags) < 0) + hostname, rtcp_port, local_rtcp_port, ttl, max_packet_size, + connect); + if (ffurl_open(&s->rtcp_hd, buf, flags) < 0) goto fail; - + /* just to ease handle access. XXX: need to suppress direct handle access */ - s->rtp_fd = udp_get_file_handle(s->rtp_hd); - s->rtcp_fd = udp_get_file_handle(s->rtcp_hd); + s->rtp_fd = ffurl_get_file_handle(s->rtp_hd); + s->rtcp_fd = ffurl_get_file_handle(s->rtcp_hd); - h->max_packet_size = url_get_max_packet_size(s->rtp_hd); + h->max_packet_size = s->rtp_hd->max_packet_size; h->is_streamed = 1; return 0; fail: if (s->rtp_hd) - url_close(s->rtp_hd); + ffurl_close(s->rtp_hd); if (s->rtcp_hd) - url_close(s->rtcp_hd); + ffurl_close(s->rtcp_hd); av_free(s); - return AVERROR_IO; + return AVERROR(EIO); } static int rtp_read(URLContext *h, uint8_t *buf, int size) { RTPContext *s = h->priv_data; - struct sockaddr_in from; - int from_len, len, fd_max, n; - fd_set rfds; + struct sockaddr_storage from; + socklen_t from_len; + int len, n; + struct pollfd p[2] = {{s->rtp_fd, POLLIN, 0}, {s->rtcp_fd, POLLIN, 0}}; + #if 0 for(;;) { from_len = sizeof(from); len = recvfrom (s->rtp_fd, buf, size, 0, (struct sockaddr *)&from, &from_len); if (len < 0) { - if (errno == EAGAIN || errno == EINTR) + if (ff_neterrno() == AVERROR(EAGAIN) || + ff_neterrno() == AVERROR(EINTR)) continue; - return AVERROR_IO; + return AVERROR(EIO); } break; } #else for(;;) { + if (url_interrupt_cb()) + return AVERROR_EXIT; /* build fdset to listen to RTP and RTCP packets */ - FD_ZERO(&rfds); - fd_max = s->rtp_fd; - FD_SET(s->rtp_fd, &rfds); - if (s->rtcp_fd > fd_max) - fd_max = s->rtcp_fd; - FD_SET(s->rtcp_fd, &rfds); - n = select(fd_max + 1, &rfds, NULL, NULL, NULL); + n = poll(p, 2, 100); if (n > 0) { /* first try RTCP */ - if (FD_ISSET(s->rtcp_fd, &rfds)) { + if (p[1].revents & POLLIN) { from_len = sizeof(from); len = recvfrom (s->rtcp_fd, buf, size, 0, (struct sockaddr *)&from, &from_len); if (len < 0) { - if (errno == EAGAIN || errno == EINTR) + if (ff_neterrno() == AVERROR(EAGAIN) || + ff_neterrno() == AVERROR(EINTR)) continue; - return AVERROR_IO; + return AVERROR(EIO); } break; } /* then RTP */ - if (FD_ISSET(s->rtp_fd, &rfds)) { + if (p[0].revents & POLLIN) { from_len = sizeof(from); len = recvfrom (s->rtp_fd, buf, size, 0, (struct sockaddr *)&from, &from_len); if (len < 0) { - if (errno == EAGAIN || errno == EINTR) + if (ff_neterrno() == AVERROR(EAGAIN) || + ff_neterrno() == AVERROR(EINTR)) continue; - return AVERROR_IO; + return AVERROR(EIO); } break; } + } else if (n < 0) { + if (ff_neterrno() == AVERROR(EINTR)) + continue; + return AVERROR(EIO); } } #endif return len; } -static int rtp_write(URLContext *h, uint8_t *buf, int size) +static int rtp_write(URLContext *h, const uint8_t *buf, int size) { RTPContext *s = h->priv_data; int ret; URLContext *hd; - - if (buf[1] >= 200 && buf[1] <= 204) { + + if (buf[1] >= RTCP_SR && buf[1] <= RTCP_APP) { /* RTCP payload type */ hd = s->rtcp_hd; } else { @@ -244,7 +295,7 @@ static int rtp_write(URLContext *h, uint8_t *buf, int size) hd = s->rtp_hd; } - ret = url_write(hd, buf, size); + ret = ffurl_write(hd, buf, size); #if 0 { struct timespec ts; @@ -260,41 +311,52 @@ static int rtp_close(URLContext *h) { RTPContext *s = h->priv_data; - url_close(s->rtp_hd); - url_close(s->rtcp_hd); + ffurl_close(s->rtp_hd); + ffurl_close(s->rtcp_hd); av_free(s); return 0; } /** - * Return the local port used by the RTP connexion - * @param s1 media file context + * Return the local rtp port used by the RTP connection + * @param h media file context * @return the local port number */ -int rtp_get_local_port(URLContext *h) + +int rtp_get_local_rtp_port(URLContext *h) { RTPContext *s = h->priv_data; - return udp_get_local_port(s->rtp_hd); + return ff_udp_get_local_port(s->rtp_hd); } /** - * Return the rtp and rtcp file handles for select() usage to wait for several RTP - * streams at the same time. + * Return the local rtcp port used by the RTP connection * @param h media file context + * @return the local port number */ -void rtp_get_file_handles(URLContext *h, int *prtp_fd, int *prtcp_fd) + +int rtp_get_local_rtcp_port(URLContext *h) { RTPContext *s = h->priv_data; + return ff_udp_get_local_port(s->rtcp_hd); +} - *prtp_fd = s->rtp_fd; - *prtcp_fd = s->rtcp_fd; +static int rtp_get_file_handle(URLContext *h) +{ + RTPContext *s = h->priv_data; + return s->rtp_fd; +} + +int rtp_get_rtcp_file_handle(URLContext *h) { + RTPContext *s = h->priv_data; + return s->rtcp_fd; } -URLProtocol rtp_protocol = { - "rtp", - rtp_open, - rtp_read, - rtp_write, - NULL, /* seek */ - rtp_close, +URLProtocol ff_rtp_protocol = { + .name = "rtp", + .url_open = rtp_open, + .url_read = rtp_read, + .url_write = rtp_write, + .url_close = rtp_close, + .url_get_file_handle = rtp_get_file_handle, };