* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+
+/**
+ * @file rtpproto.c
+ * RTP protocol
+ */
+
+#include "libavutil/avstring.h"
#include "avformat.h"
-#include "avstring.h"
#include <unistd.h>
#include <stdarg.h>
#include "network.h"
+#include "os_support.h"
#include <fcntl.h>
#define RTP_TX_BUF_SIZE (64 * 1024)
* @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;
}
-/* add option to url of the form:
- "http://host:port/path?option1=val1&option2=val2... */
+/**
+ * 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, ...)
{
char buf1[1024];
static void build_udp_url(char *buf, int buf_size,
const char *hostname, int port,
- int local_port, int multicast, int ttl)
+ int local_port, int ttl,
+ int max_packet_size)
{
snprintf(buf, buf_size, "udp://%s:%d", hostname, port);
if (local_port >= 0)
url_add_option(buf, buf_size, "localport=%d", local_port);
- if (multicast)
- url_add_option(buf, buf_size, "multicast=1");
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);
}
-/*
+/**
* url syntax: rtp://host:port[?option=val...]
- * option: 'multicast=1' : enable multicast
- * 'ttl=n' : set the ttl value (for multicast only)
+ * 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
*
*/
+
static int rtp_open(URLContext *h, const char *uri, int flags)
{
RTPContext *s;
- int port, is_output, is_multicast, ttl, local_port;
+ int port, is_output, ttl, local_port, max_packet_size;
char hostname[256];
char buf[1024];
char path[1024];
url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port,
path, sizeof(path), uri);
/* extract parameters */
- is_multicast = 0;
ttl = -1;
local_port = -1;
+ max_packet_size = -1;
+
p = strchr(uri, '?');
if (p) {
- is_multicast = find_info_tag(buf, sizeof(buf), "multicast", p);
if (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 (find_info_tag(buf, sizeof(buf), "pkt_size", p)) {
+ max_packet_size = strtol(buf, NULL, 10);
+ }
}
build_udp_url(buf, sizeof(buf),
- hostname, port, local_port, is_multicast, ttl);
+ hostname, port, local_port, ttl, max_packet_size);
if (url_open(&s->rtp_hd, buf, flags) < 0)
goto fail;
local_port = udp_get_local_port(s->rtp_hd);
/* well, should suppress localport in path */
build_udp_url(buf, sizeof(buf),
- hostname, port + 1, local_port + 1, is_multicast, ttl);
+ hostname, port + 1, local_port + 1, ttl, max_packet_size);
if (url_open(&s->rtcp_hd, buf, flags) < 0)
goto fail;
if (s->rtcp_hd)
url_close(s->rtcp_hd);
av_free(s);
- return AVERROR_IO;
+ return AVERROR(EIO);
}
static int rtp_read(URLContext *h, uint8_t *buf, int size)
if (ff_neterrno() == FF_NETERROR(EAGAIN) ||
ff_neterrno() == FF_NETERROR(EINTR))
continue;
- return AVERROR_IO;
+ return AVERROR(EIO);
}
break;
}
if (ff_neterrno() == FF_NETERROR(EAGAIN) ||
ff_neterrno() == FF_NETERROR(EINTR))
continue;
- return AVERROR_IO;
+ return AVERROR(EIO);
}
break;
}
if (ff_neterrno() == FF_NETERROR(EAGAIN) ||
ff_neterrno() == FF_NETERROR(EINTR))
continue;
- return AVERROR_IO;
+ return AVERROR(EIO);
}
break;
}
* @param s1 media file context
* @return the local port number
*/
+
int rtp_get_local_port(URLContext *h)
{
RTPContext *s = h->priv_data;
}
/**
- * Return the rtp and rtcp file handles for select() usage to wait for several RTP
- * streams at the same time.
+ * Return the rtp and rtcp file handles for select() usage to wait for
+ * several RTP streams at the same time.
* @param h media file context
*/
+
void rtp_get_file_handles(URLContext *h, int *prtp_fd, int *prtcp_fd)
{
RTPContext *s = h->priv_data;