* RTP network protocol
* Copyright (c) 2002 Fabrice Bellard
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * 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 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file libavformat/rtpproto.c
+ * @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 <unistd.h>
#include <stdarg.h>
+#include "internal.h"
#include "network.h"
#include "os_support.h"
#include <fcntl.h>
-#if HAVE_SYS_SELECT_H
-#include <sys/select.h>
+#if HAVE_POLL_H
+#include <sys/poll.h>
#endif
-#define RTP_TX_BUF_SIZE (64 * 1024)
-#define RTP_RX_BUF_SIZE (128 * 1024)
-
typedef struct RTPContext {
URLContext *rtp_hd, *rtcp_hd;
int rtp_fd, rtcp_fd;
* 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)
+int ff_rtp_set_remote_url(URLContext *h, const char *uri)
{
RTPContext *s = h->priv_data;
char hostname[256];
char buf[1024];
char path[1024];
- url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port,
- path, sizeof(path), uri);
+ 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, path);
- udp_set_remote_url(s->rtp_hd, buf);
+ ff_url_join(buf, sizeof(buf), "udp", NULL, hostname, port, "%s", path);
+ ff_udp_set_remote_url(s->rtp_hd, buf);
- 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 + 1, "%s", path);
+ ff_udp_set_remote_url(s->rtcp_hd, buf);
return 0;
}
* "http://host:port/path?option1=val1&option2=val2...
*/
-static void url_add_option(char *buf, int buf_size, const char *fmt, ...)
+static av_printf_format(3, 4) void url_add_option(char *buf, int buf_size, const char *fmt, ...)
{
char buf1[1024];
va_list ap;
static void build_udp_url(char *buf, int buf_size,
const char *hostname, int port,
int local_port, int ttl,
- int max_packet_size)
+ 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 (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: 'ttl=n' : set the ttl value (for multicast only)
- * 'localport=n' : set the local port to n
- * 'pkt_size=n' : set max packet size
+ * 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, ttl, local_port, max_packet_size;
+ RTPContext *s = h->priv_data;
+ 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 AVERROR(ENOMEM);
- h->priv_data = s;
-
- url_split(NULL, 0, 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 */
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) {
- 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 (find_info_tag(buf, sizeof(buf), "pkt_size", p)) {
+ 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, ttl, max_packet_size);
- 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, &h->interrupt_callback, NULL) < 0)
goto fail;
- local_port = udp_get_local_port(s->rtp_hd);
- /* XXX: need to open another connection if the port is not even */
-
- /* well, should suppress localport in path */
+ if (local_rtp_port>=0 && local_rtcp_port<0)
+ local_rtcp_port = ff_udp_get_local_port(s->rtp_hd) + 1;
build_udp_url(buf, sizeof(buf),
- hostname, port + 1, local_port + 1, ttl, max_packet_size);
- 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, &h->interrupt_callback, NULL) < 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);
- av_free(s);
+ ffurl_close(s->rtcp_hd);
return AVERROR(EIO);
}
static int rtp_read(URLContext *h, uint8_t *buf, int size)
{
RTPContext *s = h->priv_data;
- struct sockaddr_in from;
+ struct sockaddr_storage from;
socklen_t from_len;
- int len, fd_max, n;
- fd_set rfds;
-#if 0
- for(;;) {
- from_len = sizeof(from);
- len = recvfrom (s->rtp_fd, buf, size, 0,
- (struct sockaddr *)&from, &from_len);
- if (len < 0) {
- if (ff_neterrno() == FF_NETERROR(EAGAIN) ||
- ff_neterrno() == FF_NETERROR(EINTR))
- continue;
- return AVERROR(EIO);
- }
- break;
- }
-#else
+ int len, n;
+ struct pollfd p[2] = {{s->rtp_fd, POLLIN, 0}, {s->rtcp_fd, POLLIN, 0}};
+
for(;;) {
+ if (ff_check_interrupt(&h->interrupt_callback))
+ 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 (ff_neterrno() == FF_NETERROR(EAGAIN) ||
- ff_neterrno() == FF_NETERROR(EINTR))
+ if (ff_neterrno() == AVERROR(EAGAIN) ||
+ ff_neterrno() == AVERROR(EINTR))
continue;
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 (ff_neterrno() == FF_NETERROR(EAGAIN) ||
- ff_neterrno() == FF_NETERROR(EINTR))
+ if (ff_neterrno() == AVERROR(EAGAIN) ||
+ ff_neterrno() == AVERROR(EINTR))
continue;
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 (RTP_PT_IS_RTCP(buf[1])) {
/* RTCP payload type */
hd = s->rtcp_hd;
} else {
hd = s->rtp_hd;
}
- ret = url_write(hd, buf, size);
-#if 0
- {
- struct timespec ts;
- ts.tv_sec = 0;
- ts.tv_nsec = 10 * 1000000;
- nanosleep(&ts, NULL);
- }
-#endif
+ ret = ffurl_write(hd, buf, size);
return ret;
}
{
RTPContext *s = h->priv_data;
- url_close(s->rtp_hd);
- url_close(s->rtcp_hd);
- av_free(s);
+ ffurl_close(s->rtp_hd);
+ ffurl_close(s->rtcp_hd);
return 0;
}
/**
- * Return the local port used by the RTP connection
- * @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 ff_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 ff_rtp_get_local_rtcp_port(URLContext *h)
+{
+ RTPContext *s = h->priv_data;
+ return ff_udp_get_local_port(s->rtcp_hd);
+}
+
+static int rtp_get_file_handle(URLContext *h)
{
RTPContext *s = h->priv_data;
+ return s->rtp_fd;
+}
- *prtp_fd = s->rtp_fd;
- *prtcp_fd = s->rtcp_fd;
+static int rtp_get_multi_file_handle(URLContext *h, int **handles,
+ int *numhandles)
+{
+ RTPContext *s = h->priv_data;
+ int *hs = *handles = av_malloc(sizeof(**handles) * 2);
+ if (!hs)
+ return AVERROR(ENOMEM);
+ hs[0] = s->rtp_fd;
+ hs[1] = s->rtcp_fd;
+ *numhandles = 2;
+ return 0;
}
-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,
+ .url_get_multi_file_handle = rtp_get_multi_file_handle,
+ .priv_data_size = sizeof(RTPContext),
+ .flags = URL_PROTOCOL_FLAG_NETWORK,
};
projects / ffmpeg / blobdiff