3 * Copyright (c) 2002 Fabrice Bellard.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include <netinet/in.h>
23 #include <sys/socket.h>
26 # include <arpa/inet.h>
28 # include "barpainet.h"
33 typedef struct RTSPState {
34 URLContext *rtsp_hd; /* RTSP TCP connexion handle */
35 ByteIOContext rtsp_gb;
36 int seq; /* RTSP command sequence number */
38 enum RTSPProtocol protocol;
39 char last_reply[2048]; /* XXX: allocate ? */
42 typedef struct RTSPStream {
44 int interleaved_min, interleaved_max; /* interleave ids, if TCP transport */
45 char control_url[1024]; /* url for this stream (from SDP) */
47 int sdp_port; /* port (from SDP content - not used in RTSP) */
48 struct in_addr sdp_ip; /* IP address (from SDP content - not used in RTSP) */
49 int sdp_ttl; /* IP TTL (from SDP content - not used in RTSP) */
50 int sdp_payload_type; /* payload type - only used in SDP */
53 /* suppress this hack */
54 int rtsp_abort_req = 0;
56 /* XXX: currently, the only way to change the protocols consists in
57 changing this variable */
58 int rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP) | (1 << RTSP_PROTOCOL_RTP_UDP) | (1 << RTSP_PROTOCOL_RTP_UDP_MULTICAST);
60 /* if non zero, then set a range for RTP ports */
61 int rtsp_rtp_port_min = 0;
62 int rtsp_rtp_port_max = 0;
64 FFRTSPCallback *ff_rtsp_callback = NULL;
66 static int rtsp_probe(AVProbeData *p)
68 if (strstart(p->filename, "rtsp:", NULL))
69 return AVPROBE_SCORE_MAX;
73 static int redir_isspace(int c)
75 return (c == ' ' || c == '\t' || c == '\n' || c == '\r');
78 static void skip_spaces(const char **pp)
82 while (redir_isspace(*p))
87 static void get_word_sep(char *buf, int buf_size, const char *sep,
96 while (!strchr(sep, *p) && *p != '\0') {
97 if ((q - buf) < buf_size - 1)
106 static void get_word(char *buf, int buf_size, const char **pp)
114 while (!redir_isspace(*p) && *p != '\0') {
115 if ((q - buf) < buf_size - 1)
124 /* parse the rtpmap description: <codec_name>/<clock_rate>[/<other
126 static int sdp_parse_rtpmap(AVCodecContext *codec, const char *p)
131 get_word_sep(buf, sizeof(buf), "/", &p);
132 if (!strcmp(buf, "MP4V-ES")) {
133 codec->codec_id = CODEC_ID_MPEG4;
140 /* return the length and optionnaly the data */
141 static int hex_to_data(uint8_t *data, const char *p)
151 c = toupper((unsigned char)*p++);
152 if (c >= '0' && c <= '9')
154 else if (c >= 'A' && c <= 'F')
169 static void sdp_parse_fmtp(AVCodecContext *codec, const char *p)
175 /* loop on each attribute */
180 get_word_sep(attr, sizeof(attr), "=", &p);
183 get_word_sep(value, sizeof(value), ";", &p);
186 /* handle MPEG4 video */
187 switch(codec->codec_id) {
189 if (!strcmp(attr, "config")) {
190 /* decode the hexa encoded parameter */
191 len = hex_to_data(NULL, value);
192 codec->extradata = av_mallocz(len);
193 if (!codec->extradata)
195 codec->extradata_size = len;
196 hex_to_data(codec->extradata, value);
200 /* ignore data for other codecs */
204 // printf("'%s' = '%s'\n", attr, value);
208 typedef struct SDPParseState {
210 struct in_addr default_ip;
214 static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
215 int letter, const char *buf)
217 char buf1[64], st_type[64];
219 int codec_type, payload_type, i;
222 struct in_addr sdp_ip;
226 printf("sdp: %c='%s'\n", letter, buf);
232 get_word(buf1, sizeof(buf1), &p);
233 if (strcmp(buf1, "IN") != 0)
235 get_word(buf1, sizeof(buf1), &p);
236 if (strcmp(buf1, "IP4") != 0)
238 get_word_sep(buf1, sizeof(buf1), "/", &p);
239 if (inet_aton(buf1, &sdp_ip) == 0)
244 get_word_sep(buf1, sizeof(buf1), "/", &p);
247 if (s->nb_streams == 0) {
248 s1->default_ip = sdp_ip;
249 s1->default_ttl = ttl;
251 st = s->streams[s->nb_streams - 1];
252 rtsp_st = st->priv_data;
253 rtsp_st->sdp_ip = sdp_ip;
254 rtsp_st->sdp_ttl = ttl;
258 pstrcpy(s->title, sizeof(s->title), p);
261 if (s->nb_streams == 0) {
262 pstrcpy(s->comment, sizeof(s->comment), p);
268 get_word(st_type, sizeof(st_type), &p);
269 if (!strcmp(st_type, "audio")) {
270 codec_type = CODEC_TYPE_AUDIO;
271 } else if (!strcmp(st_type, "video")) {
272 codec_type = CODEC_TYPE_VIDEO;
276 rtsp_st = av_mallocz(sizeof(RTSPStream));
279 st = av_new_stream(s, s->nb_streams);
282 st->priv_data = rtsp_st;
284 rtsp_st->sdp_ip = s1->default_ip;
285 rtsp_st->sdp_ttl = s1->default_ttl;
287 st->codec.codec_type = codec_type;
289 get_word(buf1, sizeof(buf1), &p); /* port */
290 rtsp_st->sdp_port = atoi(buf1);
292 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
294 /* XXX: handle list of formats */
295 get_word(buf1, sizeof(buf1), &p); /* format list */
296 rtsp_st->sdp_payload_type = atoi(buf1);
297 if (rtsp_st->sdp_payload_type < 96) {
298 /* if standard payload type, we can find the codec right now */
299 rtp_get_codec_info(&st->codec, rtsp_st->sdp_payload_type);
302 /* put a default control url */
303 pstrcpy(rtsp_st->control_url, sizeof(rtsp_st->control_url), s->filename);
306 if (strstart(p, "control:", &p) && s->nb_streams > 0) {
308 /* get the control url */
309 st = s->streams[s->nb_streams - 1];
310 rtsp_st = st->priv_data;
312 /* XXX: may need to add full url resolution */
313 url_split(proto, sizeof(proto), NULL, 0, NULL, NULL, 0, p);
314 if (proto[0] == '\0') {
315 /* relative control URL */
316 pstrcat(rtsp_st->control_url, sizeof(rtsp_st->control_url), "/");
317 pstrcat(rtsp_st->control_url, sizeof(rtsp_st->control_url), p);
319 pstrcpy(rtsp_st->control_url, sizeof(rtsp_st->control_url), p);
321 } else if (strstart(p, "rtpmap:", &p)) {
322 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
323 get_word(buf1, sizeof(buf1), &p);
324 payload_type = atoi(buf1);
325 for(i = 0; i < s->nb_streams;i++) {
327 rtsp_st = st->priv_data;
328 if (rtsp_st->sdp_payload_type == payload_type) {
329 sdp_parse_rtpmap(&st->codec, p);
332 } else if (strstart(p, "fmtp:", &p)) {
333 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
334 get_word(buf1, sizeof(buf1), &p);
335 payload_type = atoi(buf1);
336 for(i = 0; i < s->nb_streams;i++) {
338 rtsp_st = st->priv_data;
339 if (rtsp_st->sdp_payload_type == payload_type) {
340 sdp_parse_fmtp(&st->codec, p);
348 int sdp_parse(AVFormatContext *s, const char *content)
353 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
355 memset(s1, 0, sizeof(SDPParseState));
366 /* get the content */
368 while (*p != '\n' && *p != '\0') {
369 if ((q - buf) < sizeof(buf) - 1)
374 sdp_parse_line(s, s1, letter, buf);
376 while (*p != '\n' && *p != '\0')
384 static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
391 v = strtol(p, (char **)&p, 10);
395 v = strtol(p, (char **)&p, 10);
404 /* XXX: only one transport specification is parsed */
405 static void rtsp_parse_transport(RTSPHeader *reply, const char *p)
407 char transport_protocol[16];
409 char lower_transport[16];
411 RTSPTransportField *th;
414 reply->nb_transports = 0;
421 th = &reply->transports[reply->nb_transports];
423 get_word_sep(transport_protocol, sizeof(transport_protocol),
427 get_word_sep(profile, sizeof(profile), "/;,", &p);
428 lower_transport[0] = '\0';
430 get_word_sep(lower_transport, sizeof(lower_transport),
433 if (!strcmp(lower_transport, "TCP"))
434 th->protocol = RTSP_PROTOCOL_RTP_TCP;
436 th->protocol = RTSP_PROTOCOL_RTP_UDP;
440 /* get each parameter */
441 while (*p != '\0' && *p != ',') {
442 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
443 if (!strcmp(parameter, "port")) {
446 rtsp_parse_range(&th->port_min, &th->port_max, &p);
448 } else if (!strcmp(parameter, "client_port")) {
451 rtsp_parse_range(&th->client_port_min,
452 &th->client_port_max, &p);
454 } else if (!strcmp(parameter, "server_port")) {
457 rtsp_parse_range(&th->server_port_min,
458 &th->server_port_max, &p);
460 } else if (!strcmp(parameter, "interleaved")) {
463 rtsp_parse_range(&th->interleaved_min,
464 &th->interleaved_max, &p);
466 } else if (!strcmp(parameter, "multicast")) {
467 if (th->protocol == RTSP_PROTOCOL_RTP_UDP)
468 th->protocol = RTSP_PROTOCOL_RTP_UDP_MULTICAST;
469 } else if (!strcmp(parameter, "ttl")) {
472 th->ttl = strtol(p, (char **)&p, 10);
474 } else if (!strcmp(parameter, "destination")) {
475 struct in_addr ipaddr;
479 get_word_sep(buf, sizeof(buf), ";,", &p);
480 if (inet_aton(buf, &ipaddr))
481 th->destination = ntohl(ipaddr.s_addr);
484 while (*p != ';' && *p != '\0' && *p != ',')
492 reply->nb_transports++;
496 void rtsp_parse_line(RTSPHeader *reply, const char *buf)
500 /* NOTE: we do case independent match for broken servers */
502 if (stristart(p, "Session:", &p)) {
503 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
504 } else if (stristart(p, "Content-Length:", &p)) {
505 reply->content_length = strtol(p, NULL, 10);
506 } else if (stristart(p, "Transport:", &p)) {
507 rtsp_parse_transport(reply, p);
508 } else if (stristart(p, "CSeq:", &p)) {
509 reply->seq = strtol(p, NULL, 10);
514 static void rtsp_send_cmd(AVFormatContext *s,
515 const char *cmd, RTSPHeader *reply,
516 unsigned char **content_ptr)
518 RTSPState *rt = s->priv_data;
519 char buf[4096], buf1[1024], *q;
522 int content_length, line_count;
523 unsigned char *content = NULL;
525 memset(reply, 0, sizeof(RTSPHeader));
528 pstrcpy(buf, sizeof(buf), cmd);
529 snprintf(buf1, sizeof(buf1), "CSeq: %d\n", rt->seq);
530 pstrcat(buf, sizeof(buf), buf1);
531 if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) {
532 snprintf(buf1, sizeof(buf1), "Session: %s\n", rt->session_id);
533 pstrcat(buf, sizeof(buf), buf1);
535 pstrcat(buf, sizeof(buf), "\n");
537 printf("Sending:\n%s--\n", buf);
539 url_write(rt->rtsp_hd, buf, strlen(buf));
541 /* parse reply (XXX: use buffers) */
543 rt->last_reply[0] = '\0';
547 if (url_read(rt->rtsp_hd, &ch, 1) == 0)
552 if ((q - buf) < sizeof(buf) - 1)
558 printf("line='%s'\n", buf);
560 /* test if last line */
564 if (line_count == 0) {
566 get_word(buf1, sizeof(buf1), &p);
567 get_word(buf1, sizeof(buf1), &p);
568 reply->status_code = atoi(buf1);
570 rtsp_parse_line(reply, p);
571 pstrcat(rt->last_reply, sizeof(rt->last_reply), p);
572 pstrcat(rt->last_reply, sizeof(rt->last_reply), "\n");
577 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
578 pstrcpy(rt->session_id, sizeof(rt->session_id), reply->session_id);
580 content_length = reply->content_length;
581 if (content_length > 0) {
582 /* leave some room for a trailing '\0' (useful for simple parsing) */
583 content = av_malloc(content_length + 1);
584 url_read(rt->rtsp_hd, content, content_length);
585 content[content_length] = '\0';
588 *content_ptr = content;
591 /* useful for modules: set RTSP callback function */
593 void rtsp_set_callback(FFRTSPCallback *rtsp_cb)
595 ff_rtsp_callback = rtsp_cb;
599 static int rtsp_read_header(AVFormatContext *s,
600 AVFormatParameters *ap)
602 RTSPState *rt = s->priv_data;
603 char host[1024], path[1024], tcpname[1024], cmd[2048];
605 int port, i, ret, err;
606 RTSPHeader reply1, *reply = &reply1;
607 unsigned char *content = NULL;
614 /* extract hostname and port */
616 host, sizeof(host), &port, path, sizeof(path), s->filename);
618 port = RTSP_DEFAULT_PORT;
620 /* open the tcp connexion */
621 snprintf(tcpname, sizeof(tcpname), "tcp://%s:%d", host, port);
622 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0)
624 rt->rtsp_hd = rtsp_hd;
627 /* describe the stream */
628 snprintf(cmd, sizeof(cmd),
629 "DESCRIBE %s RTSP/1.0\n"
630 "Accept: application/sdp\n",
632 rtsp_send_cmd(s, cmd, reply, &content);
634 err = AVERROR_INVALIDDATA;
637 if (reply->status_code != RTSP_STATUS_OK) {
638 err = AVERROR_INVALIDDATA;
642 /* now we got the SDP description, we parse it */
643 ret = sdp_parse(s, (const char *)content);
646 err = AVERROR_INVALIDDATA;
650 protocol_mask = rtsp_default_protocols;
652 /* for each stream, make the setup request */
653 /* XXX: we assume the same server is used for the control of each
655 for(i=0;i<s->nb_streams;i++) {
656 char transport[2048];
660 rtsp_st = st->priv_data;
662 /* compute available transports */
666 if (protocol_mask & (1 << RTSP_PROTOCOL_RTP_UDP)) {
670 /* first try in specified port range */
671 if (rtsp_rtp_port_min != 0) {
672 for(j=rtsp_rtp_port_min;j<=rtsp_rtp_port_max;j++) {
673 snprintf(buf, sizeof(buf), "rtp://?localport=%d", j);
674 if (!av_open_input_file(&rtsp_st->ic, buf,
675 &rtp_demux, 0, NULL))
680 /* then try on any port */
681 if (av_open_input_file(&rtsp_st->ic, "rtp://",
682 &rtp_demux, 0, NULL) < 0) {
683 err = AVERROR_INVALIDDATA;
688 port = rtp_get_local_port(url_fileno(&rtsp_st->ic->pb));
689 if (transport[0] != '\0')
690 pstrcat(transport, sizeof(transport), ",");
691 snprintf(transport + strlen(transport), sizeof(transport) - strlen(transport) - 1,
692 "RTP/AVP/UDP;unicast;client_port=%d-%d",
697 if (protocol_mask & (1 << RTSP_PROTOCOL_RTP_TCP)) {
698 if (transport[0] != '\0')
699 pstrcat(transport, sizeof(transport), ",");
700 snprintf(transport + strlen(transport), sizeof(transport) - strlen(transport) - 1,
704 if (protocol_mask & (1 << RTSP_PROTOCOL_RTP_UDP_MULTICAST)) {
705 if (transport[0] != '\0')
706 pstrcat(transport, sizeof(transport), ",");
707 snprintf(transport + strlen(transport),
708 sizeof(transport) - strlen(transport) - 1,
709 "RTP/AVP/UDP;multicast");
712 snprintf(cmd, sizeof(cmd),
713 "SETUP %s RTSP/1.0\n"
715 rtsp_st->control_url, transport);
716 rtsp_send_cmd(s, cmd, reply, NULL);
717 if (reply->status_code != RTSP_STATUS_OK ||
718 reply->nb_transports != 1) {
719 err = AVERROR_INVALIDDATA;
723 /* XXX: same protocol for all streams is required */
725 if (reply->transports[0].protocol != rt->protocol) {
726 err = AVERROR_INVALIDDATA;
730 rt->protocol = reply->transports[0].protocol;
733 /* close RTP connection if not choosen */
734 if (reply->transports[0].protocol != RTSP_PROTOCOL_RTP_UDP &&
735 (protocol_mask & (1 << RTSP_PROTOCOL_RTP_UDP))) {
736 av_close_input_file(rtsp_st->ic);
740 switch(reply->transports[0].protocol) {
741 case RTSP_PROTOCOL_RTP_TCP:
743 if (av_open_input_file(&rtsp_st->ic, "null", fmt, 0, NULL) < 0) {
744 err = AVERROR_INVALIDDATA;
747 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
748 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
751 case RTSP_PROTOCOL_RTP_UDP:
755 /* XXX: also use address if specified */
756 snprintf(url, sizeof(url), "rtp://%s:%d",
757 host, reply->transports[0].server_port_min);
758 if (rtp_set_remote_url(url_fileno(&rtsp_st->ic->pb), url) < 0) {
759 err = AVERROR_INVALIDDATA;
764 case RTSP_PROTOCOL_RTP_UDP_MULTICAST:
770 ttl = reply->transports[0].ttl;
773 snprintf(url, sizeof(url), "rtp://%s:%d?multicast=1&ttl=%d",
775 reply->transports[0].server_port_min,
777 if (av_open_input_file(&rtsp_st->ic, url, fmt, 0, NULL) < 0) {
778 err = AVERROR_INVALIDDATA;
786 /* use callback if available to extend setup */
787 if (ff_rtsp_callback) {
788 if (ff_rtsp_callback(RTSP_ACTION_CLIENT_SETUP, rt->session_id,
789 NULL, 0, rt->last_reply) < 0) {
790 err = AVERROR_INVALIDDATA;
796 snprintf(cmd, sizeof(cmd),
797 "PLAY %s RTSP/1.0\n",
799 rtsp_send_cmd(s, cmd, reply, NULL);
800 if (reply->status_code != RTSP_STATUS_OK) {
801 err = AVERROR_INVALIDDATA;
805 /* open TCP with bufferized input */
806 if (rt->protocol == RTSP_PROTOCOL_RTP_TCP) {
807 if (url_fdopen(&rt->rtsp_gb, rt->rtsp_hd) < 0) {
815 for(i=0;i<s->nb_streams;i++) {
817 rtsp_st = st->priv_data;
820 av_close_input_file(rtsp_st->ic);
825 url_close(rt->rtsp_hd);
829 static int tcp_read_packet(AVFormatContext *s,
832 RTSPState *rt = s->priv_data;
833 ByteIOContext *rtsp_gb = &rt->rtsp_gb;
834 int c, id, len, i, ret;
837 char buf[RTP_MAX_PACKET_LENGTH];
841 c = url_fgetc(rtsp_gb);
847 id = get_byte(rtsp_gb);
848 len = get_be16(rtsp_gb);
849 if (len > RTP_MAX_PACKET_LENGTH || len < 12)
852 get_buffer(rtsp_gb, buf, len);
854 /* find the matching stream */
855 for(i = 0; i < s->nb_streams; i++) {
857 rtsp_st = st->priv_data;
858 if (i >= rtsp_st->interleaved_min &&
859 i <= rtsp_st->interleaved_max)
864 ret = rtp_parse_packet(rtsp_st->ic, pkt, buf, len);
867 pkt->stream_index = i;
871 /* NOTE: output one packet at a time. May need to add a small fifo */
872 static int udp_read_packet(AVFormatContext *s,
879 int fd1, fd2, fd_max, n, i, ret;
880 char buf[RTP_MAX_PACKET_LENGTH];
888 for(i = 0; i < s->nb_streams; i++) {
890 rtsp_st = st->priv_data;
892 /* currently, we cannot probe RTCP handle because of blocking restrictions */
893 rtp_get_file_handles(url_fileno(&ic->pb), &fd1, &fd2);
898 /* XXX: also add proper API to abort */
901 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
903 for(i = 0; i < s->nb_streams; i++) {
905 rtsp_st = st->priv_data;
907 rtp_get_file_handles(url_fileno(&ic->pb), &fd1, &fd2);
908 if (FD_ISSET(fd1, &rfds)) {
909 ret = url_read(url_fileno(&ic->pb), buf, sizeof(buf));
911 rtp_parse_packet(ic, pkt, buf, ret) == 0) {
912 pkt->stream_index = i;
921 static int rtsp_read_packet(AVFormatContext *s,
924 RTSPState *rt = s->priv_data;
927 switch(rt->protocol) {
929 case RTSP_PROTOCOL_RTP_TCP:
930 ret = tcp_read_packet(s, pkt);
932 case RTSP_PROTOCOL_RTP_UDP:
933 ret = udp_read_packet(s, pkt);
939 static int rtsp_read_close(AVFormatContext *s)
941 RTSPState *rt = s->priv_data;
944 RTSPHeader reply1, *reply = &reply1;
948 /* NOTE: it is valid to flush the buffer here */
949 if (rt->protocol == RTSP_PROTOCOL_RTP_TCP) {
950 url_fclose(&rt->rtsp_gb);
953 snprintf(cmd, sizeof(cmd),
954 "TEARDOWN %s RTSP/1.0\n",
956 rtsp_send_cmd(s, cmd, reply, NULL);
958 if (ff_rtsp_callback) {
959 ff_rtsp_callback(RTSP_ACTION_CLIENT_TEARDOWN, rt->session_id,
963 for(i=0;i<s->nb_streams;i++) {
965 rtsp_st = st->priv_data;
968 av_close_input_file(rtsp_st->ic);
972 url_close(rt->rtsp_hd);
976 static AVInputFormat rtsp_demux = {
984 .flags = AVFMT_NOFILE,
987 static int sdp_probe(AVProbeData *p1)
991 /* we look for a line beginning "c=IN IP4" */
994 if (strstart(p, "c=IN IP4", NULL))
995 return AVPROBE_SCORE_MAX / 2;
1006 #define SDP_MAX_SIZE 8192
1008 static int sdp_read_header(AVFormatContext *s,
1009 AVFormatParameters *ap)
1012 RTSPStream *rtsp_st;
1017 /* read the whole sdp file */
1018 /* XXX: better loading */
1019 content = av_malloc(SDP_MAX_SIZE);
1020 size = get_buffer(&s->pb, content, SDP_MAX_SIZE - 1);
1023 return AVERROR_INVALIDDATA;
1025 content[size] ='\0';
1027 sdp_parse(s, content);
1030 /* open each RTP stream */
1031 for(i=0;i<s->nb_streams;i++) {
1033 rtsp_st = st->priv_data;
1035 snprintf(url, sizeof(url), "rtp://%s:%d?multicast=1&ttl=%d",
1036 inet_ntoa(rtsp_st->sdp_ip),
1039 if (av_open_input_file(&rtsp_st->ic, url, &rtp_demux, 0, NULL) < 0) {
1040 err = AVERROR_INVALIDDATA;
1046 for(i=0;i<s->nb_streams;i++) {
1048 rtsp_st = st->priv_data;
1051 av_close_input_file(rtsp_st->ic);
1058 static int sdp_read_packet(AVFormatContext *s,
1061 return udp_read_packet(s, pkt);
1064 static int sdp_read_close(AVFormatContext *s)
1067 RTSPStream *rtsp_st;
1070 for(i=0;i<s->nb_streams;i++) {
1072 rtsp_st = st->priv_data;
1075 av_close_input_file(rtsp_st->ic);
1083 static AVInputFormat sdp_demux = {
1094 /* dummy redirector format (used directly in av_open_input_file now) */
1095 static int redir_probe(AVProbeData *pd)
1099 while (redir_isspace(*p))
1101 if (strstart(p, "http://", NULL) ||
1102 strstart(p, "rtsp://", NULL))
1103 return AVPROBE_SCORE_MAX;
1107 /* called from utils.c */
1108 int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f)
1112 AVFormatContext *ic = NULL;
1114 /* parse each URL and try to open it */
1116 while (c != URL_EOF) {
1119 if (!redir_isspace(c))
1128 if (c == URL_EOF || redir_isspace(c))
1130 if ((q - buf) < sizeof(buf) - 1)
1135 //printf("URL='%s'\n", buf);
1136 /* try to open the media file */
1137 if (av_open_input_file(&ic, buf, NULL, 0, NULL) == 0)
1147 AVInputFormat redir_demux = {
1149 "Redirector format",
1159 av_register_input_format(&rtsp_demux);
1160 av_register_input_format(&redir_demux);
1161 av_register_input_format(&sdp_demux);