* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+
+#include "libavutil/avstring.h"
#include "avformat.h"
#include <sys/time.h>
#include <unistd.h> /* for select() prototype */
#include "network.h"
-#include "avstring.h"
#include "rtsp.h"
#include "rtp_internal.h"
/* XXX: currently, the only way to change the protocols consists in
changing this variable */
+#if LIBAVFORMAT_VERSION_INT < (53 << 16)
int rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_UDP);
+#endif
static int rtsp_probe(AVProbeData *p)
{
static int redir_isspace(int c)
{
- return (c == ' ' || c == '\t' || c == '\n' || c == '\r');
+ return c == ' ' || c == '\t' || c == '\n' || c == '\r';
}
static void skip_spaces(const char **pp)
"/", &p);
if (*p == '/')
p++;
- get_word_sep(profile, sizeof(profile), "/;,", &p);
- lower_transport[0] = '\0';
- if (*p == '/') {
- p++;
- get_word_sep(lower_transport, sizeof(lower_transport),
- ";,", &p);
+ if (!strcasecmp (transport_protocol, "rtp")) {
+ get_word_sep(profile, sizeof(profile), "/;,", &p);
+ lower_transport[0] = '\0';
+ /* rtp/avp/<protocol> */
+ if (*p == '/') {
+ p++;
+ get_word_sep(lower_transport, sizeof(lower_transport),
+ ";,", &p);
+ }
+ } else if (!strcasecmp (transport_protocol, "x-pn-tng")) {
+ /* x-pn-tng/<protocol> */
+ get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
+ profile[0] = '\0';
}
if (!strcasecmp(lower_transport, "TCP"))
th->protocol = RTSP_PROTOCOL_RTP_TCP;
av_free(rt->rtsp_streams);
}
-static int rtsp_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
+/**
+ * @returns 0 on success, <0 on error, 1 if protocol is unavailable.
+ */
+static int
+make_setup_request (AVFormatContext *s, const char *host, int port, int protocol)
{
RTSPState *rt = s->priv_data;
- char host[1024], path[1024], tcpname[1024], cmd[2048], *option_list, *option;
- URLContext *rtsp_hd;
- int port, i, j, ret, err;
- RTSPHeader reply1, *reply = &reply1;
- unsigned char *content = NULL;
+ int j, i, err;
RTSPStream *rtsp_st;
- int protocol_mask = 0;
AVStream *st;
-
- /* extract hostname and port */
- url_split(NULL, 0, NULL, 0,
- host, sizeof(host), &port, path, sizeof(path), s->filename);
- if (port < 0)
- port = RTSP_DEFAULT_PORT;
-
- /* search for options */
- option_list = strchr(path, '?');
- if (option_list) {
- /* remove the options from the path */
- *option_list++ = 0;
- while(option_list) {
- /* move the option pointer */
- option = option_list;
- option_list = strchr(option_list, '&');
- if (option_list)
- *(option_list++) = 0;
- /* handle the options */
- if (strcmp(option, "udp") == 0)
- protocol_mask = (1<< RTSP_PROTOCOL_RTP_UDP);
- else if (strcmp(option, "multicast") == 0)
- protocol_mask = (1<< RTSP_PROTOCOL_RTP_UDP_MULTICAST);
- else if (strcmp(option, "tcp") == 0)
- protocol_mask = (1<< RTSP_PROTOCOL_RTP_TCP);
- }
- }
-
- if (!protocol_mask)
- protocol_mask = rtsp_default_protocols;
-
- /* open the tcp connexion */
- snprintf(tcpname, sizeof(tcpname), "tcp://%s:%d", host, port);
- if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0)
- return AVERROR(EIO);
- rt->rtsp_hd = rtsp_hd;
- rt->seq = 0;
-
- /* describe the stream */
- snprintf(cmd, sizeof(cmd),
- "DESCRIBE %s RTSP/1.0\r\n"
- "Accept: application/sdp\r\n",
- s->filename);
- rtsp_send_cmd(s, cmd, reply, &content);
- if (!content) {
- err = AVERROR_INVALIDDATA;
- goto fail;
- }
- if (reply->status_code != RTSP_STATUS_OK) {
- err = AVERROR_INVALIDDATA;
- goto fail;
- }
-
- /* now we got the SDP description, we parse it */
- ret = sdp_parse(s, (const char *)content);
- av_freep(&content);
- if (ret < 0) {
- err = AVERROR_INVALIDDATA;
- goto fail;
- }
+ RTSPHeader reply1, *reply = &reply1;
+ char cmd[2048];
/* for each stream, make the setup request */
/* XXX: we assume the same server is used for the control of each
transport[0] = '\0';
/* RTP/UDP */
- if (protocol_mask & (1 << RTSP_PROTOCOL_RTP_UDP)) {
+ if (protocol == RTSP_PROTOCOL_RTP_UDP) {
char buf[256];
/* first try in specified port range */
}
/* RTP/TCP */
- else if (protocol_mask & (1 << RTSP_PROTOCOL_RTP_TCP)) {
+ else if (protocol == RTSP_PROTOCOL_RTP_TCP) {
if (transport[0] != '\0')
av_strlcat(transport, ",", sizeof(transport));
snprintf(transport + strlen(transport), sizeof(transport) - strlen(transport) - 1,
"RTP/AVP/TCP");
}
- else if (protocol_mask & (1 << RTSP_PROTOCOL_RTP_UDP_MULTICAST)) {
+ else if (protocol == RTSP_PROTOCOL_RTP_UDP_MULTICAST) {
if (transport[0] != '\0')
av_strlcat(transport, ",", sizeof(transport));
snprintf(transport + strlen(transport),
"Transport: %s\r\n",
rtsp_st->control_url, transport);
rtsp_send_cmd(s, cmd, reply, NULL);
- if (reply->status_code != RTSP_STATUS_OK ||
- reply->nb_transports != 1) {
+ if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
+ err = 1;
+ goto fail;
+ } else if (reply->status_code != RTSP_STATUS_OK ||
+ reply->nb_transports != 1) {
err = AVERROR_INVALIDDATA;
goto fail;
}
/* close RTP connection if not choosen */
if (reply->transports[0].protocol != RTSP_PROTOCOL_RTP_UDP &&
- (protocol_mask & (1 << RTSP_PROTOCOL_RTP_UDP))) {
+ (protocol == RTSP_PROTOCOL_RTP_UDP)) {
url_close(rtsp_st->rtp_handle);
rtsp_st->rtp_handle = NULL;
}
struct in_addr in;
in.s_addr = htonl(reply->transports[0].destination);
- snprintf(url, sizeof(url), "rtp://%s:%d?multicast=1&ttl=%d",
+ snprintf(url, sizeof(url), "rtp://%s:%d?ttl=%d",
inet_ntoa(in),
reply->transports[0].port_min,
reply->transports[0].ttl);
}
}
+ return 0;
+
+fail:
+ for (i=0; i<rt->nb_rtsp_streams; i++) {
+ if (rt->rtsp_streams[i]->rtp_handle) {
+ url_close(rt->rtsp_streams[i]->rtp_handle);
+ rt->rtsp_streams[i]->rtp_handle = NULL;
+ }
+ }
+ return err;
+}
+
+static int rtsp_read_header(AVFormatContext *s,
+ AVFormatParameters *ap)
+{
+ RTSPState *rt = s->priv_data;
+ char host[1024], path[1024], tcpname[1024], cmd[2048], *option_list, *option;
+ URLContext *rtsp_hd;
+ int port, ret, err;
+ RTSPHeader reply1, *reply = &reply1;
+ unsigned char *content = NULL;
+ int protocol_mask = 0;
+
+ /* extract hostname and port */
+ url_split(NULL, 0, NULL, 0,
+ host, sizeof(host), &port, path, sizeof(path), s->filename);
+ if (port < 0)
+ port = RTSP_DEFAULT_PORT;
+
+ /* search for options */
+ option_list = strchr(path, '?');
+ if (option_list) {
+ /* remove the options from the path */
+ *option_list++ = 0;
+ while(option_list) {
+ /* move the option pointer */
+ option = option_list;
+ option_list = strchr(option_list, '&');
+ if (option_list)
+ *(option_list++) = 0;
+ /* handle the options */
+ if (strcmp(option, "udp") == 0)
+ protocol_mask = (1<< RTSP_PROTOCOL_RTP_UDP);
+ else if (strcmp(option, "multicast") == 0)
+ protocol_mask = (1<< RTSP_PROTOCOL_RTP_UDP_MULTICAST);
+ else if (strcmp(option, "tcp") == 0)
+ protocol_mask = (1<< RTSP_PROTOCOL_RTP_TCP);
+ }
+ }
+
+ if (!protocol_mask)
+ protocol_mask = (1 << RTSP_PROTOCOL_RTP_LAST) - 1;
+
+ /* open the tcp connexion */
+ snprintf(tcpname, sizeof(tcpname), "tcp://%s:%d", host, port);
+ if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0)
+ return AVERROR(EIO);
+ rt->rtsp_hd = rtsp_hd;
+ rt->seq = 0;
+
+ /* describe the stream */
+ snprintf(cmd, sizeof(cmd),
+ "DESCRIBE %s RTSP/1.0\r\n"
+ "Accept: application/sdp\r\n",
+ s->filename);
+ rtsp_send_cmd(s, cmd, reply, &content);
+ if (!content) {
+ err = AVERROR_INVALIDDATA;
+ goto fail;
+ }
+ if (reply->status_code != RTSP_STATUS_OK) {
+ err = AVERROR_INVALIDDATA;
+ goto fail;
+ }
+
+ /* now we got the SDP description, we parse it */
+ ret = sdp_parse(s, (const char *)content);
+ av_freep(&content);
+ if (ret < 0) {
+ err = AVERROR_INVALIDDATA;
+ goto fail;
+ }
+
+ do {
+ int protocol = ff_log2_tab[protocol_mask & ~(protocol_mask - 1)];
+
+ err = make_setup_request(s, host, port, protocol);
+ if (err < 0)
+ goto fail;
+ protocol_mask &= ~(1 << protocol);
+ if (protocol_mask == 0 && err == 1) {
+ err = AVERROR(FF_NETERROR(EPROTONOSUPPORT));
+ goto fail;
+ }
+ } while (err);
+
rt->state = RTSP_STATE_IDLE;
rt->seek_timestamp = 0; /* default is to start stream at position
zero */
for(;;) {
if (url_interrupt_cb())
- return -1;
+ return AVERROR(EINTR);
FD_ZERO(&rfds);
fd_max = -1;
for(i = 0; i < rt->nb_rtsp_streams; i++) {
break;
}
if (len < 0)
- return AVERROR(EIO);
+ return len;
ret = rtp_parse_packet(rtsp_st->rtp_ctx, pkt, buf, len);
if (ret < 0)
goto redo;
for(i=0;i<rt->nb_rtsp_streams;i++) {
rtsp_st = rt->rtsp_streams[i];
- snprintf(url, sizeof(url), "rtp://%s:%d?multicast=1&ttl=%d",
+ snprintf(url, sizeof(url), "rtp://%s:%d?localport=%d&ttl=%d",
inet_ntoa(rtsp_st->sdp_ip),
rtsp_st->sdp_port,
+ rtsp_st->sdp_port,
rtsp_st->sdp_ttl);
if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
err = AVERROR_INVALIDDATA;
return 0;
}
-/* called from utils.c */
-int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f)
+static int redir_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
char buf[4096], *q;
int c;
AVFormatContext *ic = NULL;
+ ByteIOContext *f = s->pb;
/* parse each URL and try to open it */
c = url_fgetc(f);
if (av_open_input_file(&ic, buf, NULL, 0, NULL) == 0)
break;
}
- *ic_ptr = ic;
if (!ic)
return AVERROR(EIO);
- else
- return 0;
+
+ *s = *ic;
+ url_fclose(f);
+
+ return 0;
}
AVInputFormat redir_demuxer = {
"Redirector format",
0,
redir_probe,
- NULL,
+ redir_read_header,
NULL,
NULL,
};
projects / ffmpeg / blobdiff