3 * Copyright (c) 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 /* needed by inet_aton() */
25 #include "libavutil/avstring.h"
26 #include "libavutil/intreadwrite.h"
31 #include <sys/select.h>
40 #include "rtp_vorbis.h"
43 //#define DEBUG_RTP_TCP
45 static int rtsp_read_play(AVFormatContext *s);
47 #if LIBAVFORMAT_VERSION_INT < (53 << 16)
48 int rtsp_default_protocols = (1 << RTSP_LOWER_TRANSPORT_UDP);
51 static int rtsp_probe(AVProbeData *p)
53 if (av_strstart(p->filename, "rtsp:", NULL))
54 return AVPROBE_SCORE_MAX;
58 #define SPACE_CHARS " \t\r\n"
59 /* we use memchr() instead of strchr() here because strchr() will return
60 * the terminating '\0' of SPACE_CHARS instead of NULL if c is '\0'. */
61 #define redir_isspace(c) memchr(SPACE_CHARS, c, 4)
62 static void skip_spaces(const char **pp)
66 while (redir_isspace(*p))
71 static void get_word_until_chars(char *buf, int buf_size,
72 const char *sep, const char **pp)
80 while (!strchr(sep, *p) && *p != '\0') {
81 if ((q - buf) < buf_size - 1)
90 static void get_word_sep(char *buf, int buf_size, const char *sep,
93 if (**pp == '/') (*pp)++;
94 get_word_until_chars(buf, buf_size, sep, pp);
97 static void get_word(char *buf, int buf_size, const char **pp)
99 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
102 /* parse the rtpmap description: <codec_name>/<clock_rate>[/<other
104 static int sdp_parse_rtpmap(AVCodecContext *codec, RTSPStream *rtsp_st, int payload_type, const char *p)
111 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
112 see if we can handle this kind of payload */
113 get_word_sep(buf, sizeof(buf), "/", &p);
114 if (payload_type >= RTP_PT_PRIVATE) {
115 RTPDynamicProtocolHandler *handler= RTPFirstDynamicPayloadHandler;
117 if (!strcasecmp(buf, handler->enc_name) && (codec->codec_type == handler->codec_type)) {
118 codec->codec_id = handler->codec_id;
119 rtsp_st->dynamic_handler= handler;
121 rtsp_st->dynamic_protocol_context= handler->open();
125 handler= handler->next;
128 /* We are in a standard case ( from http://www.iana.org/assignments/rtp-parameters) */
129 /* search into AVRtpPayloadTypes[] */
130 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
133 c = avcodec_find_decoder(codec->codec_id);
137 c_name = (char *)NULL;
140 get_word_sep(buf, sizeof(buf), "/", &p);
142 switch (codec->codec_type) {
143 case CODEC_TYPE_AUDIO:
144 av_log(codec, AV_LOG_DEBUG, " audio codec set to : %s\n", c_name);
145 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
146 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
148 codec->sample_rate = i;
149 get_word_sep(buf, sizeof(buf), "/", &p);
153 // TODO: there is a bug here; if it is a mono stream, and less than 22000Hz, faad upconverts to stereo and twice the
154 // frequency. No problem, but the sample rate is being set here by the sdp line. Upcoming patch forthcoming. (rdm)
156 av_log(codec, AV_LOG_DEBUG, " audio samplerate set to : %i\n", codec->sample_rate);
157 av_log(codec, AV_LOG_DEBUG, " audio channels set to : %i\n", codec->channels);
159 case CODEC_TYPE_VIDEO:
160 av_log(codec, AV_LOG_DEBUG, " video codec set to : %s\n", c_name);
171 /* return the length and optionnaly the data */
172 static int hex_to_data(uint8_t *data, const char *p)
182 c = toupper((unsigned char)*p++);
183 if (c >= '0' && c <= '9')
185 else if (c >= 'A' && c <= 'F')
200 static void sdp_parse_fmtp_config(AVCodecContext * codec, void *ctx,
201 char *attr, char *value)
203 switch (codec->codec_id) {
206 if (!strcmp(attr, "config")) {
207 /* decode the hexa encoded parameter */
208 int len = hex_to_data(NULL, value);
209 if (codec->extradata)
210 av_free(codec->extradata);
211 codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
212 if (!codec->extradata)
214 codec->extradata_size = len;
215 hex_to_data(codec->extradata, value);
218 case CODEC_ID_VORBIS:
219 ff_vorbis_parse_fmtp_config(codec, ctx, attr, value);
233 /* All known fmtp parmeters and the corresping RTPAttrTypeEnum */
234 #define ATTR_NAME_TYPE_INT 0
235 #define ATTR_NAME_TYPE_STR 1
236 static const AttrNameMap attr_names[]=
238 {"SizeLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, sizelength)},
239 {"IndexLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexlength)},
240 {"IndexDeltaLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexdeltalength)},
241 {"profile-level-id", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, profile_level_id)},
242 {"StreamType", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, streamtype)},
243 {"mode", ATTR_NAME_TYPE_STR, offsetof(RTPPayloadData, mode)},
247 /** parse the attribute line from the fmtp a line of an sdp resonse. This is broken out as a function
248 * because it is used in rtp_h264.c, which is forthcoming.
250 int rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, char *value, int value_size)
254 get_word_sep(attr, attr_size, "=", p);
257 get_word_sep(value, value_size, ";", p);
265 /* parse a SDP line and save stream attributes */
266 static void sdp_parse_fmtp(AVStream *st, const char *p)
269 /* Vorbis setup headers can be up to 12KB and are sent base64
270 * encoded, giving a 12KB * (4/3) = 16KB FMTP line. */
274 RTSPStream *rtsp_st = st->priv_data;
275 AVCodecContext *codec = st->codec;
276 RTPPayloadData *rtp_payload_data = &rtsp_st->rtp_payload_data;
278 /* loop on each attribute */
279 while(rtsp_next_attr_and_value(&p, attr, sizeof(attr), value, sizeof(value)))
281 /* grab the codec extra_data from the config parameter of the fmtp line */
282 sdp_parse_fmtp_config(codec, rtsp_st->dynamic_protocol_context,
284 /* Looking for a known attribute */
285 for (i = 0; attr_names[i].str; ++i) {
286 if (!strcasecmp(attr, attr_names[i].str)) {
287 if (attr_names[i].type == ATTR_NAME_TYPE_INT)
288 *(int *)((char *)rtp_payload_data + attr_names[i].offset) = atoi(value);
289 else if (attr_names[i].type == ATTR_NAME_TYPE_STR)
290 *(char **)((char *)rtp_payload_data + attr_names[i].offset) = av_strdup(value);
296 /** Parse a string \p in the form of Range:npt=xx-xx, and determine the start
298 * Used for seeking in the rtp stream.
300 static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
305 if (!av_stristart(p, "npt=", &p))
308 *start = AV_NOPTS_VALUE;
309 *end = AV_NOPTS_VALUE;
311 get_word_sep(buf, sizeof(buf), "-", &p);
312 *start = parse_date(buf, 1);
315 get_word_sep(buf, sizeof(buf), "-", &p);
316 *end = parse_date(buf, 1);
318 // av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
319 // av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
322 typedef struct SDPParseState {
324 struct in_addr default_ip;
326 int skip_media; ///< set if an unknown m= line occurs
329 static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
330 int letter, const char *buf)
332 RTSPState *rt = s->priv_data;
333 char buf1[64], st_type[64];
335 enum CodecType codec_type;
339 struct in_addr sdp_ip;
342 dprintf(s, "sdp: %c='%s'\n", letter, buf);
345 if (s1->skip_media && letter != 'm')
349 get_word(buf1, sizeof(buf1), &p);
350 if (strcmp(buf1, "IN") != 0)
352 get_word(buf1, sizeof(buf1), &p);
353 if (strcmp(buf1, "IP4") != 0)
355 get_word_sep(buf1, sizeof(buf1), "/", &p);
356 if (inet_aton(buf1, &sdp_ip) == 0)
361 get_word_sep(buf1, sizeof(buf1), "/", &p);
364 if (s->nb_streams == 0) {
365 s1->default_ip = sdp_ip;
366 s1->default_ttl = ttl;
368 st = s->streams[s->nb_streams - 1];
369 rtsp_st = st->priv_data;
370 rtsp_st->sdp_ip = sdp_ip;
371 rtsp_st->sdp_ttl = ttl;
375 av_metadata_set(&s->metadata, "title", p);
378 if (s->nb_streams == 0) {
379 av_metadata_set(&s->metadata, "comment", p);
386 get_word(st_type, sizeof(st_type), &p);
387 if (!strcmp(st_type, "audio")) {
388 codec_type = CODEC_TYPE_AUDIO;
389 } else if (!strcmp(st_type, "video")) {
390 codec_type = CODEC_TYPE_VIDEO;
391 } else if (!strcmp(st_type, "application")) {
392 codec_type = CODEC_TYPE_DATA;
397 rtsp_st = av_mallocz(sizeof(RTSPStream));
400 rtsp_st->stream_index = -1;
401 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
403 rtsp_st->sdp_ip = s1->default_ip;
404 rtsp_st->sdp_ttl = s1->default_ttl;
406 get_word(buf1, sizeof(buf1), &p); /* port */
407 rtsp_st->sdp_port = atoi(buf1);
409 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
411 /* XXX: handle list of formats */
412 get_word(buf1, sizeof(buf1), &p); /* format list */
413 rtsp_st->sdp_payload_type = atoi(buf1);
415 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
416 /* no corresponding stream */
418 st = av_new_stream(s, 0);
421 st->priv_data = rtsp_st;
422 rtsp_st->stream_index = st->index;
423 st->codec->codec_type = codec_type;
424 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
425 /* if standard payload type, we can find the codec right now */
426 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
429 /* put a default control url */
430 av_strlcpy(rtsp_st->control_url, s->filename, sizeof(rtsp_st->control_url));
433 if (av_strstart(p, "control:", &p) && s->nb_streams > 0) {
435 /* get the control url */
436 st = s->streams[s->nb_streams - 1];
437 rtsp_st = st->priv_data;
439 /* XXX: may need to add full url resolution */
440 url_split(proto, sizeof(proto), NULL, 0, NULL, 0, NULL, NULL, 0, p);
441 if (proto[0] == '\0') {
442 /* relative control URL */
443 av_strlcat(rtsp_st->control_url, "/", sizeof(rtsp_st->control_url));
444 av_strlcat(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
446 av_strlcpy(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
448 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
449 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
450 get_word(buf1, sizeof(buf1), &p);
451 payload_type = atoi(buf1);
452 st = s->streams[s->nb_streams - 1];
453 rtsp_st = st->priv_data;
454 sdp_parse_rtpmap(st->codec, rtsp_st, payload_type, p);
455 } else if (av_strstart(p, "fmtp:", &p)) {
456 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
457 get_word(buf1, sizeof(buf1), &p);
458 payload_type = atoi(buf1);
459 for(i = 0; i < s->nb_streams;i++) {
461 rtsp_st = st->priv_data;
462 if (rtsp_st->sdp_payload_type == payload_type) {
463 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
464 if(!rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf)) {
465 sdp_parse_fmtp(st, p);
468 sdp_parse_fmtp(st, p);
472 } else if(av_strstart(p, "framesize:", &p)) {
473 // let dynamic protocol handlers have a stab at the line.
474 get_word(buf1, sizeof(buf1), &p);
475 payload_type = atoi(buf1);
476 for(i = 0; i < s->nb_streams;i++) {
478 rtsp_st = st->priv_data;
479 if (rtsp_st->sdp_payload_type == payload_type) {
480 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
481 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf);
485 } else if(av_strstart(p, "range:", &p)) {
488 // this is so that seeking on a streamed file can work.
489 rtsp_parse_range_npt(p, &start, &end);
490 s->start_time= start;
491 s->duration= (end==AV_NOPTS_VALUE)?AV_NOPTS_VALUE:end-start; // AV_NOPTS_VALUE means live broadcast (and can't seek)
492 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
494 rt->transport = RTSP_TRANSPORT_RDT;
496 if (rt->server_type == RTSP_SERVER_WMS)
497 ff_wms_parse_sdp_a_line(s, p);
498 if (s->nb_streams > 0) {
499 if (rt->server_type == RTSP_SERVER_REAL)
500 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
502 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
503 if (rtsp_st->dynamic_handler &&
504 rtsp_st->dynamic_handler->parse_sdp_a_line)
505 rtsp_st->dynamic_handler->parse_sdp_a_line(s, s->nb_streams - 1,
506 rtsp_st->dynamic_protocol_context, buf);
513 static int sdp_parse(AVFormatContext *s, const char *content)
517 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
518 * contain long SDP lines containing complete ASF Headers (several
519 * kB) or arrays of MDPR (RM stream descriptor) headers plus
520 * "rulebooks" describing their properties. Therefore, the SDP line
523 * The Vorbis FMTP line can be up to 16KB - see sdp_parse_fmtp. */
525 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
527 memset(s1, 0, sizeof(SDPParseState));
538 /* get the content */
540 while (*p != '\n' && *p != '\r' && *p != '\0') {
541 if ((q - buf) < sizeof(buf) - 1)
546 sdp_parse_line(s, s1, letter, buf);
548 while (*p != '\n' && *p != '\0')
556 static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
563 v = strtol(p, (char **)&p, 10);
567 v = strtol(p, (char **)&p, 10);
576 /* XXX: only one transport specification is parsed */
577 static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
579 char transport_protocol[16];
581 char lower_transport[16];
583 RTSPTransportField *th;
586 reply->nb_transports = 0;
593 th = &reply->transports[reply->nb_transports];
595 get_word_sep(transport_protocol, sizeof(transport_protocol),
597 if (!strcasecmp (transport_protocol, "rtp")) {
598 get_word_sep(profile, sizeof(profile), "/;,", &p);
599 lower_transport[0] = '\0';
600 /* rtp/avp/<protocol> */
602 get_word_sep(lower_transport, sizeof(lower_transport),
605 th->transport = RTSP_TRANSPORT_RTP;
606 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
607 !strcasecmp (transport_protocol, "x-real-rdt")) {
608 /* x-pn-tng/<protocol> */
609 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
611 th->transport = RTSP_TRANSPORT_RDT;
613 if (!strcasecmp(lower_transport, "TCP"))
614 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
616 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
620 /* get each parameter */
621 while (*p != '\0' && *p != ',') {
622 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
623 if (!strcmp(parameter, "port")) {
626 rtsp_parse_range(&th->port_min, &th->port_max, &p);
628 } else if (!strcmp(parameter, "client_port")) {
631 rtsp_parse_range(&th->client_port_min,
632 &th->client_port_max, &p);
634 } else if (!strcmp(parameter, "server_port")) {
637 rtsp_parse_range(&th->server_port_min,
638 &th->server_port_max, &p);
640 } else if (!strcmp(parameter, "interleaved")) {
643 rtsp_parse_range(&th->interleaved_min,
644 &th->interleaved_max, &p);
646 } else if (!strcmp(parameter, "multicast")) {
647 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
648 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
649 } else if (!strcmp(parameter, "ttl")) {
652 th->ttl = strtol(p, (char **)&p, 10);
654 } else if (!strcmp(parameter, "destination")) {
655 struct in_addr ipaddr;
659 get_word_sep(buf, sizeof(buf), ";,", &p);
660 if (inet_aton(buf, &ipaddr))
661 th->destination = ntohl(ipaddr.s_addr);
664 while (*p != ';' && *p != '\0' && *p != ',')
672 reply->nb_transports++;
676 void rtsp_parse_line(RTSPMessageHeader *reply, const char *buf)
680 /* NOTE: we do case independent match for broken servers */
682 if (av_stristart(p, "Session:", &p)) {
684 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
685 if (av_stristart(p, ";timeout=", &p) &&
686 (t = strtol(p, NULL, 10)) > 0) {
689 } else if (av_stristart(p, "Content-Length:", &p)) {
690 reply->content_length = strtol(p, NULL, 10);
691 } else if (av_stristart(p, "Transport:", &p)) {
692 rtsp_parse_transport(reply, p);
693 } else if (av_stristart(p, "CSeq:", &p)) {
694 reply->seq = strtol(p, NULL, 10);
695 } else if (av_stristart(p, "Range:", &p)) {
696 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
697 } else if (av_stristart(p, "RealChallenge1:", &p)) {
699 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
700 } else if (av_stristart(p, "Server:", &p)) {
702 av_strlcpy(reply->server, p, sizeof(reply->server));
703 } else if (av_stristart(p, "Notice:", &p) ||
704 av_stristart(p, "X-Notice:", &p)) {
705 reply->notice = strtol(p, NULL, 10);
709 /* skip a RTP/TCP interleaved packet */
710 static void rtsp_skip_packet(AVFormatContext *s)
712 RTSPState *rt = s->priv_data;
716 ret = url_read_complete(rt->rtsp_hd, buf, 3);
719 len = AV_RB16(buf + 1);
721 dprintf(s, "skipping RTP packet len=%d\n", len);
726 if (len1 > sizeof(buf))
728 ret = url_read_complete(rt->rtsp_hd, buf, len1);
736 * Read a RTSP message from the server, or prepare to read data
737 * packets if we're reading data interleaved over the TCP/RTSP
738 * connection as well.
740 * @param s RTSP demuxer context
741 * @param reply pointer where the RTSP message header will be stored
742 * @param content_ptr pointer where the RTSP message body, if any, will
743 * be stored (length is in \p reply)
744 * @param return_on_interleaved_data whether the function may return if we
745 * encounter a data marker ('$'), which precedes data
746 * packets over interleaved TCP/RTSP connections. If this
747 * is set, this function will return 1 after encountering
748 * a '$'. If it is not set, the function will skip any
749 * data packets (if they are encountered), until a reply
750 * has been fully parsed. If no more data is available
751 * without parsing a reply, it will return an error.
753 * @returns 1 if a data packets is ready to be received, -1 on error,
757 rtsp_read_reply (AVFormatContext *s, RTSPMessageHeader *reply,
758 unsigned char **content_ptr, int return_on_interleaved_data)
760 RTSPState *rt = s->priv_data;
761 char buf[4096], buf1[1024], *q;
764 int ret, content_length, line_count = 0;
765 unsigned char *content = NULL;
767 memset(reply, 0, sizeof(*reply));
769 /* parse reply (XXX: use buffers) */
770 rt->last_reply[0] = '\0';
774 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
776 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
783 /* XXX: only parse it if first char on line ? */
784 if (return_on_interleaved_data) {
788 } else if (ch != '\r') {
789 if ((q - buf) < sizeof(buf) - 1)
795 dprintf(s, "line='%s'\n", buf);
797 /* test if last line */
801 if (line_count == 0) {
803 get_word(buf1, sizeof(buf1), &p);
804 get_word(buf1, sizeof(buf1), &p);
805 reply->status_code = atoi(buf1);
807 rtsp_parse_line(reply, p);
808 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
809 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
814 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
815 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
817 content_length = reply->content_length;
818 if (content_length > 0) {
819 /* leave some room for a trailing '\0' (useful for simple parsing) */
820 content = av_malloc(content_length + 1);
821 (void)url_read_complete(rt->rtsp_hd, content, content_length);
822 content[content_length] = '\0';
825 *content_ptr = content;
830 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
831 reply->notice == 2104 /* Start-of-Stream Reached */ ||
832 reply->notice == 2306 /* Continuous Feed Terminated */)
833 rt->state = RTSP_STATE_IDLE;
834 else if (reply->notice >= 4400 && reply->notice < 5500)
835 return AVERROR(EIO); /* data or server error */
836 else if (reply->notice == 2401 /* Ticket Expired */ ||
837 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
838 return AVERROR(EPERM);
843 static void rtsp_send_cmd_async (AVFormatContext *s,
844 const char *cmd, RTSPMessageHeader *reply,
845 unsigned char **content_ptr)
847 RTSPState *rt = s->priv_data;
848 char buf[4096], buf1[1024];
851 av_strlcpy(buf, cmd, sizeof(buf));
852 snprintf(buf1, sizeof(buf1), "CSeq: %d\r\n", rt->seq);
853 av_strlcat(buf, buf1, sizeof(buf));
854 if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) {
855 snprintf(buf1, sizeof(buf1), "Session: %s\r\n", rt->session_id);
856 av_strlcat(buf, buf1, sizeof(buf));
858 av_strlcat(buf, "\r\n", sizeof(buf));
860 dprintf(s, "Sending:\n%s--\n", buf);
862 url_write(rt->rtsp_hd, buf, strlen(buf));
863 rt->last_cmd_time = av_gettime();
866 static void rtsp_send_cmd (AVFormatContext *s,
867 const char *cmd, RTSPMessageHeader *reply,
868 unsigned char **content_ptr)
870 rtsp_send_cmd_async(s, cmd, reply, content_ptr);
872 rtsp_read_reply(s, reply, content_ptr, 0);
876 /* close and free RTSP streams */
877 static void rtsp_close_streams(RTSPState *rt)
882 for(i=0;i<rt->nb_rtsp_streams;i++) {
883 rtsp_st = rt->rtsp_streams[i];
885 if (rtsp_st->transport_priv) {
886 if (rt->transport == RTSP_TRANSPORT_RDT)
887 ff_rdt_parse_close(rtsp_st->transport_priv);
889 rtp_parse_close(rtsp_st->transport_priv);
891 if (rtsp_st->rtp_handle)
892 url_close(rtsp_st->rtp_handle);
893 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
894 rtsp_st->dynamic_handler->close(rtsp_st->dynamic_protocol_context);
897 av_free(rt->rtsp_streams);
899 av_close_input_stream (rt->asf_ctx);
905 rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
907 RTSPState *rt = s->priv_data;
910 /* open the RTP context */
911 if (rtsp_st->stream_index >= 0)
912 st = s->streams[rtsp_st->stream_index];
914 s->ctx_flags |= AVFMTCTX_NOHEADER;
916 if (rt->transport == RTSP_TRANSPORT_RDT)
917 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
918 rtsp_st->dynamic_protocol_context,
919 rtsp_st->dynamic_handler);
921 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
922 rtsp_st->sdp_payload_type,
923 &rtsp_st->rtp_payload_data);
925 if (!rtsp_st->transport_priv) {
926 return AVERROR(ENOMEM);
927 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
928 if(rtsp_st->dynamic_handler) {
929 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
930 rtsp_st->dynamic_protocol_context,
931 rtsp_st->dynamic_handler);
939 * @returns 0 on success, <0 on error, 1 if protocol is unavailable.
942 make_setup_request (AVFormatContext *s, const char *host, int port,
943 int lower_transport, const char *real_challenge)
945 RTSPState *rt = s->priv_data;
946 int rtx, j, i, err, interleave = 0;
948 RTSPMessageHeader reply1, *reply = &reply1;
950 const char *trans_pref;
952 if (rt->transport == RTSP_TRANSPORT_RDT)
953 trans_pref = "x-pn-tng";
955 trans_pref = "RTP/AVP";
957 /* default timeout: 1 minute */
960 /* for each stream, make the setup request */
961 /* XXX: we assume the same server is used for the control of each
964 for(j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
965 char transport[2048];
968 * WMS serves all UDP data over a single connection, the RTX, which
969 * isn't necessarily the first in the SDP but has to be the first
970 * to be set up, else the second/third SETUP will fail with a 461.
972 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
973 rt->server_type == RTSP_SERVER_WMS) {
976 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
977 int len = strlen(rt->rtsp_streams[rtx]->control_url);
979 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4, "/rtx"))
982 if (rtx == rt->nb_rtsp_streams)
983 return -1; /* no RTX found */
984 rtsp_st = rt->rtsp_streams[rtx];
986 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
988 rtsp_st = rt->rtsp_streams[i];
991 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
994 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
995 port = reply->transports[0].client_port_min;
999 /* first try in specified port range */
1000 if (RTSP_RTP_PORT_MIN != 0) {
1001 while(j <= RTSP_RTP_PORT_MAX) {
1002 snprintf(buf, sizeof(buf), "rtp://%s?localport=%d", host, j);
1003 j += 2; /* we will use two port by rtp stream (rtp and rtcp) */
1004 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0) {
1010 /* then try on any port
1011 ** if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1012 ** err = AVERROR_INVALIDDATA;
1018 port = rtp_get_local_port(rtsp_st->rtp_handle);
1020 snprintf(transport, sizeof(transport) - 1,
1021 "%s/UDP;", trans_pref);
1022 if (rt->server_type != RTSP_SERVER_REAL)
1023 av_strlcat(transport, "unicast;", sizeof(transport));
1024 av_strlcatf(transport, sizeof(transport),
1025 "client_port=%d", port);
1026 if (rt->transport == RTSP_TRANSPORT_RTP &&
1027 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
1028 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1032 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1033 /** For WMS streams, the application streams are only used for
1034 * UDP. When trying to set it up for TCP streams, the server
1035 * will return an error. Therefore, we skip those streams. */
1036 if (rt->server_type == RTSP_SERVER_WMS &&
1037 s->streams[rtsp_st->stream_index]->codec->codec_type == CODEC_TYPE_DATA)
1039 snprintf(transport, sizeof(transport) - 1,
1040 "%s/TCP;", trans_pref);
1041 if (rt->server_type == RTSP_SERVER_WMS)
1042 av_strlcat(transport, "unicast;", sizeof(transport));
1043 av_strlcatf(transport, sizeof(transport),
1044 "interleaved=%d-%d",
1045 interleave, interleave + 1);
1049 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
1050 snprintf(transport, sizeof(transport) - 1,
1051 "%s/UDP;multicast", trans_pref);
1053 if (rt->server_type == RTSP_SERVER_REAL ||
1054 rt->server_type == RTSP_SERVER_WMS)
1055 av_strlcat(transport, ";mode=play", sizeof(transport));
1056 snprintf(cmd, sizeof(cmd),
1057 "SETUP %s RTSP/1.0\r\n"
1058 "Transport: %s\r\n",
1059 rtsp_st->control_url, transport);
1060 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
1061 char real_res[41], real_csum[9];
1062 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1064 av_strlcatf(cmd, sizeof(cmd),
1066 "RealChallenge2: %s, sd=%s\r\n",
1067 rt->session_id, real_res, real_csum);
1069 rtsp_send_cmd(s, cmd, reply, NULL);
1070 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1073 } else if (reply->status_code != RTSP_STATUS_OK ||
1074 reply->nb_transports != 1) {
1075 err = AVERROR_INVALIDDATA;
1079 /* XXX: same protocol for all streams is required */
1081 if (reply->transports[0].lower_transport != rt->lower_transport ||
1082 reply->transports[0].transport != rt->transport) {
1083 err = AVERROR_INVALIDDATA;
1087 rt->lower_transport = reply->transports[0].lower_transport;
1088 rt->transport = reply->transports[0].transport;
1091 /* close RTP connection if not choosen */
1092 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1093 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
1094 url_close(rtsp_st->rtp_handle);
1095 rtsp_st->rtp_handle = NULL;
1098 switch(reply->transports[0].lower_transport) {
1099 case RTSP_LOWER_TRANSPORT_TCP:
1100 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1101 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1104 case RTSP_LOWER_TRANSPORT_UDP:
1108 /* XXX: also use address if specified */
1109 snprintf(url, sizeof(url), "rtp://%s:%d",
1110 host, reply->transports[0].server_port_min);
1111 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1112 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1113 err = AVERROR_INVALIDDATA;
1118 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1123 in.s_addr = htonl(reply->transports[0].destination);
1124 snprintf(url, sizeof(url), "rtp://%s:%d?ttl=%d",
1126 reply->transports[0].port_min,
1127 reply->transports[0].ttl);
1128 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1129 err = AVERROR_INVALIDDATA;
1136 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
1140 if (reply->timeout > 0)
1141 rt->timeout = reply->timeout;
1143 if (rt->server_type == RTSP_SERVER_REAL)
1144 rt->need_subscription = 1;
1149 for (i=0; i<rt->nb_rtsp_streams; i++) {
1150 if (rt->rtsp_streams[i]->rtp_handle) {
1151 url_close(rt->rtsp_streams[i]->rtp_handle);
1152 rt->rtsp_streams[i]->rtp_handle = NULL;
1158 static int rtsp_read_header(AVFormatContext *s,
1159 AVFormatParameters *ap)
1161 RTSPState *rt = s->priv_data;
1162 char host[1024], path[1024], tcpname[1024], cmd[2048], *option_list, *option;
1163 URLContext *rtsp_hd;
1165 RTSPMessageHeader reply1, *reply = &reply1;
1166 unsigned char *content = NULL;
1167 int lower_transport_mask = 0;
1168 char real_challenge[64];
1170 /* extract hostname and port */
1171 url_split(NULL, 0, NULL, 0,
1172 host, sizeof(host), &port, path, sizeof(path), s->filename);
1174 port = RTSP_DEFAULT_PORT;
1176 /* search for options */
1177 option_list = strchr(path, '?');
1179 /* remove the options from the path */
1181 while(option_list) {
1182 /* move the option pointer */
1183 option = option_list;
1184 option_list = strchr(option_list, '&');
1186 *(option_list++) = 0;
1187 /* handle the options */
1188 if (strcmp(option, "udp") == 0)
1189 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP);
1190 else if (strcmp(option, "multicast") == 0)
1191 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
1192 else if (strcmp(option, "tcp") == 0)
1193 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_TCP);
1197 if (!lower_transport_mask)
1198 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
1200 /* open the tcp connexion */
1201 snprintf(tcpname, sizeof(tcpname), "tcp://%s:%d", host, port);
1202 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0)
1203 return AVERROR(EIO);
1204 rt->rtsp_hd = rtsp_hd;
1207 /* request options supported by the server; this also detects server type */
1208 for (rt->server_type = RTSP_SERVER_RTP;;) {
1209 snprintf(cmd, sizeof(cmd),
1210 "OPTIONS %s RTSP/1.0\r\n", s->filename);
1211 if (rt->server_type == RTSP_SERVER_REAL)
1214 * The following entries are required for proper
1215 * streaming from a Realmedia server. They are
1216 * interdependent in some way although we currently
1217 * don't quite understand how. Values were copied
1218 * from mplayer SVN r23589.
1219 * @param CompanyID is a 16-byte ID in base64
1220 * @param ClientChallenge is a 16-byte ID in hex
1222 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1223 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1224 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1225 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1227 rtsp_send_cmd(s, cmd, reply, NULL);
1228 if (reply->status_code != RTSP_STATUS_OK) {
1229 err = AVERROR_INVALIDDATA;
1233 /* detect server type if not standard-compliant RTP */
1234 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1235 rt->server_type = RTSP_SERVER_REAL;
1237 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1238 rt->server_type = RTSP_SERVER_WMS;
1239 } else if (rt->server_type == RTSP_SERVER_REAL) {
1240 strcpy(real_challenge, reply->real_challenge);
1245 /* describe the stream */
1246 snprintf(cmd, sizeof(cmd),
1247 "DESCRIBE %s RTSP/1.0\r\n"
1248 "Accept: application/sdp\r\n",
1250 if (rt->server_type == RTSP_SERVER_REAL) {
1252 * The Require: attribute is needed for proper streaming from
1253 * Realmedia servers.
1256 "Require: com.real.retain-entity-for-setup\r\n",
1259 rtsp_send_cmd(s, cmd, reply, &content);
1261 err = AVERROR_INVALIDDATA;
1264 if (reply->status_code != RTSP_STATUS_OK) {
1265 err = AVERROR_INVALIDDATA;
1269 /* now we got the SDP description, we parse it */
1270 ret = sdp_parse(s, (const char *)content);
1273 err = AVERROR_INVALIDDATA;
1278 int lower_transport = ff_log2_tab[lower_transport_mask & ~(lower_transport_mask - 1)];
1280 err = make_setup_request(s, host, port, lower_transport,
1281 rt->server_type == RTSP_SERVER_REAL ?
1282 real_challenge : NULL);
1285 lower_transport_mask &= ~(1 << lower_transport);
1286 if (lower_transport_mask == 0 && err == 1) {
1287 err = AVERROR(FF_NETERROR(EPROTONOSUPPORT));
1292 rt->state = RTSP_STATE_IDLE;
1293 rt->seek_timestamp = 0; /* default is to start stream at position
1295 if (ap->initial_pause) {
1296 /* do not start immediately */
1298 if (rtsp_read_play(s) < 0) {
1299 err = AVERROR_INVALIDDATA;
1305 rtsp_close_streams(rt);
1307 url_close(rt->rtsp_hd);
1311 static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1312 uint8_t *buf, int buf_size)
1314 RTSPState *rt = s->priv_data;
1315 int id, len, i, ret;
1316 RTSPStream *rtsp_st;
1318 #ifdef DEBUG_RTP_TCP
1319 dprintf(s, "tcp_read_packet:\n");
1323 RTSPMessageHeader reply;
1325 ret = rtsp_read_reply(s, &reply, NULL, 1);
1328 if (ret == 1) /* received '$' */
1330 /* XXX: parse message */
1331 if (rt->state != RTSP_STATE_PLAYING)
1334 ret = url_read_complete(rt->rtsp_hd, buf, 3);
1338 len = AV_RB16(buf + 1);
1339 #ifdef DEBUG_RTP_TCP
1340 dprintf(s, "id=%d len=%d\n", id, len);
1342 if (len > buf_size || len < 12)
1345 ret = url_read_complete(rt->rtsp_hd, buf, len);
1348 if (rt->transport == RTSP_TRANSPORT_RDT &&
1349 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
1352 /* find the matching stream */
1353 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1354 rtsp_st = rt->rtsp_streams[i];
1355 if (id >= rtsp_st->interleaved_min &&
1356 id <= rtsp_st->interleaved_max)
1361 *prtsp_st = rtsp_st;
1365 static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1366 uint8_t *buf, int buf_size)
1368 RTSPState *rt = s->priv_data;
1369 RTSPStream *rtsp_st;
1371 int fd, fd_max, n, i, ret, tcp_fd;
1375 if (url_interrupt_cb())
1376 return AVERROR(EINTR);
1379 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1380 FD_SET(tcp_fd, &rfds);
1385 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1386 rtsp_st = rt->rtsp_streams[i];
1387 if (rtsp_st->rtp_handle) {
1388 /* currently, we cannot probe RTCP handle because of
1389 * blocking restrictions */
1390 fd = url_get_file_handle(rtsp_st->rtp_handle);
1397 tv.tv_usec = 100 * 1000;
1398 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1400 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1401 rtsp_st = rt->rtsp_streams[i];
1402 if (rtsp_st->rtp_handle) {
1403 fd = url_get_file_handle(rtsp_st->rtp_handle);
1404 if (FD_ISSET(fd, &rfds)) {
1405 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1407 *prtsp_st = rtsp_st;
1413 if (FD_ISSET(tcp_fd, &rfds)) {
1414 RTSPMessageHeader reply;
1416 rtsp_read_reply(s, &reply, NULL, 0);
1417 /* XXX: parse message */
1418 if (rt->state != RTSP_STATE_PLAYING)
1425 static int rtsp_read_packet(AVFormatContext *s,
1428 RTSPState *rt = s->priv_data;
1429 RTSPStream *rtsp_st;
1431 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
1432 RTSPMessageHeader reply1, *reply = &reply1;
1435 if (rt->server_type == RTSP_SERVER_REAL) {
1437 enum AVDiscard cache[MAX_STREAMS];
1439 for (i = 0; i < s->nb_streams; i++)
1440 cache[i] = s->streams[i]->discard;
1442 if (!rt->need_subscription) {
1443 if (memcmp (cache, rt->real_setup_cache,
1444 sizeof(enum AVDiscard) * s->nb_streams)) {
1445 av_strlcatf(cmd, sizeof(cmd),
1446 "SET_PARAMETER %s RTSP/1.0\r\n"
1447 "Unsubscribe: %s\r\n",
1448 s->filename, rt->last_subscription);
1449 rtsp_send_cmd(s, cmd, reply, NULL);
1450 if (reply->status_code != RTSP_STATUS_OK)
1451 return AVERROR_INVALIDDATA;
1452 rt->need_subscription = 1;
1456 if (rt->need_subscription) {
1457 int r, rule_nr, first = 1;
1459 memcpy(rt->real_setup_cache, cache,
1460 sizeof(enum AVDiscard) * s->nb_streams);
1461 rt->last_subscription[0] = 0;
1463 snprintf(cmd, sizeof(cmd),
1464 "SET_PARAMETER %s RTSP/1.0\r\n"
1467 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1469 for (r = 0; r < s->nb_streams; r++) {
1470 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1471 if (s->streams[r]->discard != AVDISCARD_ALL) {
1473 av_strlcat(rt->last_subscription, ",",
1474 sizeof(rt->last_subscription));
1475 ff_rdt_subscribe_rule(
1476 rt->last_subscription,
1477 sizeof(rt->last_subscription), i, rule_nr);
1484 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
1485 rtsp_send_cmd(s, cmd, reply, NULL);
1486 if (reply->status_code != RTSP_STATUS_OK)
1487 return AVERROR_INVALIDDATA;
1488 rt->need_subscription = 0;
1490 if (rt->state == RTSP_STATE_PLAYING)
1495 /* get next frames from the same RTP packet */
1496 if (rt->cur_transport_priv) {
1497 if (rt->transport == RTSP_TRANSPORT_RDT)
1498 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1500 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1502 rt->cur_transport_priv = NULL;
1504 } else if (ret == 1) {
1507 rt->cur_transport_priv = NULL;
1511 /* read next RTP packet */
1513 switch(rt->lower_transport) {
1515 case RTSP_LOWER_TRANSPORT_TCP:
1516 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1518 case RTSP_LOWER_TRANSPORT_UDP:
1519 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1520 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1521 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1522 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1529 if (rt->transport == RTSP_TRANSPORT_RDT)
1530 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
1532 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
1536 /* more packets may follow, so we save the RTP context */
1537 rt->cur_transport_priv = rtsp_st->transport_priv;
1540 /* send dummy request to keep TCP connection alive */
1541 if ((rt->server_type == RTSP_SERVER_WMS ||
1542 rt->server_type == RTSP_SERVER_REAL) &&
1543 (av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
1544 if (rt->server_type == RTSP_SERVER_WMS) {
1545 snprintf(cmd, sizeof(cmd) - 1,
1546 "GET_PARAMETER %s RTSP/1.0\r\n",
1548 rtsp_send_cmd_async(s, cmd, reply, NULL);
1550 rtsp_send_cmd_async(s, "OPTIONS * RTSP/1.0\r\n",
1558 static int rtsp_read_play(AVFormatContext *s)
1560 RTSPState *rt = s->priv_data;
1561 RTSPMessageHeader reply1, *reply = &reply1;
1564 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
1566 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
1567 if (rt->state == RTSP_STATE_PAUSED) {
1568 snprintf(cmd, sizeof(cmd),
1569 "PLAY %s RTSP/1.0\r\n",
1572 snprintf(cmd, sizeof(cmd),
1573 "PLAY %s RTSP/1.0\r\n"
1574 "Range: npt=%0.3f-\r\n",
1576 (double)rt->seek_timestamp / AV_TIME_BASE);
1578 rtsp_send_cmd(s, cmd, reply, NULL);
1579 if (reply->status_code != RTSP_STATUS_OK) {
1583 rt->state = RTSP_STATE_PLAYING;
1587 /* pause the stream */
1588 static int rtsp_read_pause(AVFormatContext *s)
1590 RTSPState *rt = s->priv_data;
1591 RTSPMessageHeader reply1, *reply = &reply1;
1596 if (rt->state != RTSP_STATE_PLAYING)
1598 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
1599 snprintf(cmd, sizeof(cmd),
1600 "PAUSE %s RTSP/1.0\r\n",
1602 rtsp_send_cmd(s, cmd, reply, NULL);
1603 if (reply->status_code != RTSP_STATUS_OK) {
1607 rt->state = RTSP_STATE_PAUSED;
1611 static int rtsp_read_seek(AVFormatContext *s, int stream_index,
1612 int64_t timestamp, int flags)
1614 RTSPState *rt = s->priv_data;
1616 rt->seek_timestamp = av_rescale_q(timestamp, s->streams[stream_index]->time_base, AV_TIME_BASE_Q);
1619 case RTSP_STATE_IDLE:
1621 case RTSP_STATE_PLAYING:
1622 if (rtsp_read_pause(s) != 0)
1624 rt->state = RTSP_STATE_SEEKING;
1625 if (rtsp_read_play(s) != 0)
1628 case RTSP_STATE_PAUSED:
1629 rt->state = RTSP_STATE_IDLE;
1635 static int rtsp_read_close(AVFormatContext *s)
1637 RTSPState *rt = s->priv_data;
1638 RTSPMessageHeader reply1, *reply = &reply1;
1642 /* NOTE: it is valid to flush the buffer here */
1643 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1644 url_fclose(&rt->rtsp_gb);
1647 snprintf(cmd, sizeof(cmd),
1648 "TEARDOWN %s RTSP/1.0\r\n",
1650 rtsp_send_cmd(s, cmd, reply, NULL);
1652 rtsp_close_streams(rt);
1653 url_close(rt->rtsp_hd);
1657 #if CONFIG_RTSP_DEMUXER
1658 AVInputFormat rtsp_demuxer = {
1660 NULL_IF_CONFIG_SMALL("RTSP input format"),
1667 .flags = AVFMT_NOFILE,
1668 .read_play = rtsp_read_play,
1669 .read_pause = rtsp_read_pause,
1673 static int sdp_probe(AVProbeData *p1)
1675 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
1677 /* we look for a line beginning "c=IN IP4" */
1678 while (p < p_end && *p != '\0') {
1679 if (p + sizeof("c=IN IP4") - 1 < p_end && av_strstart(p, "c=IN IP4", NULL))
1680 return AVPROBE_SCORE_MAX / 2;
1682 while(p < p_end - 1 && *p != '\n') p++;
1691 #define SDP_MAX_SIZE 8192
1693 static int sdp_read_header(AVFormatContext *s,
1694 AVFormatParameters *ap)
1696 RTSPState *rt = s->priv_data;
1697 RTSPStream *rtsp_st;
1702 /* read the whole sdp file */
1703 /* XXX: better loading */
1704 content = av_malloc(SDP_MAX_SIZE);
1705 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
1708 return AVERROR_INVALIDDATA;
1710 content[size] ='\0';
1712 sdp_parse(s, content);
1715 /* open each RTP stream */
1716 for(i=0;i<rt->nb_rtsp_streams;i++) {
1717 rtsp_st = rt->rtsp_streams[i];
1719 snprintf(url, sizeof(url), "rtp://%s:%d?localport=%d&ttl=%d",
1720 inet_ntoa(rtsp_st->sdp_ip),
1724 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1725 err = AVERROR_INVALIDDATA;
1728 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
1733 rtsp_close_streams(rt);
1737 static int sdp_read_packet(AVFormatContext *s,
1740 return rtsp_read_packet(s, pkt);
1743 static int sdp_read_close(AVFormatContext *s)
1745 RTSPState *rt = s->priv_data;
1746 rtsp_close_streams(rt);
1750 #if CONFIG_SDP_DEMUXER
1751 AVInputFormat sdp_demuxer = {
1753 NULL_IF_CONFIG_SMALL("SDP"),
1762 #if CONFIG_REDIR_DEMUXER
1763 /* dummy redirector format (used directly in av_open_input_file now) */
1764 static int redir_probe(AVProbeData *pd)
1769 if (av_strstart(p, "http://", NULL) ||
1770 av_strstart(p, "rtsp://", NULL))
1771 return AVPROBE_SCORE_MAX;
1775 static int redir_read_header(AVFormatContext *s, AVFormatParameters *ap)
1779 AVFormatContext *ic = NULL;
1780 ByteIOContext *f = s->pb;
1782 /* parse each URL and try to open it */
1784 while (c != URL_EOF) {
1787 if (!redir_isspace(c))
1796 if (c == URL_EOF || redir_isspace(c))
1798 if ((q - buf) < sizeof(buf) - 1)
1803 //printf("URL='%s'\n", buf);
1804 /* try to open the media file */
1805 if (av_open_input_file(&ic, buf, NULL, 0, NULL) == 0)
1809 return AVERROR(EIO);
1817 AVInputFormat redir_demuxer = {
1819 NULL_IF_CONFIG_SMALL("Redirector format"),