3 * Copyright (c) 2002 Fabrice Bellard
5 * This file is part of Libav.
7 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/base64.h"
23 #include "libavutil/avstring.h"
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/mathematics.h"
26 #include "libavutil/parseutils.h"
27 #include "libavutil/random_seed.h"
28 #include "libavutil/dict.h"
29 #include "libavutil/opt.h"
30 #include "libavutil/time.h"
32 #include "avio_internal.h"
39 #include "os_support.h"
46 #include "rtpdec_formats.h"
47 #include "rtpenc_chain.h"
52 /* Timeout values for socket poll, in ms,
53 * and read_packet(), in seconds */
54 #define POLL_TIMEOUT_MS 100
55 #define READ_PACKET_TIMEOUT_S 10
56 #define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS
57 #define SDP_MAX_SIZE 16384
58 #define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
59 #define DEFAULT_REORDERING_DELAY 100000
61 #define OFFSET(x) offsetof(RTSPState, x)
62 #define DEC AV_OPT_FLAG_DECODING_PARAM
63 #define ENC AV_OPT_FLAG_ENCODING_PARAM
65 #define RTSP_FLAG_OPTS(name, longname) \
66 { name, longname, OFFSET(rtsp_flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, DEC, "rtsp_flags" }, \
67 { "filter_src", "Only receive packets from the negotiated peer IP", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_FILTER_SRC}, 0, 0, DEC, "rtsp_flags" }
69 #define RTSP_MEDIATYPE_OPTS(name, longname) \
70 { name, longname, OFFSET(media_type_mask), AV_OPT_TYPE_FLAGS, { .i64 = (1 << (AVMEDIA_TYPE_DATA+1)) - 1 }, INT_MIN, INT_MAX, DEC, "allowed_media_types" }, \
71 { "video", "Video", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_VIDEO}, 0, 0, DEC, "allowed_media_types" }, \
72 { "audio", "Audio", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_AUDIO}, 0, 0, DEC, "allowed_media_types" }, \
73 { "data", "Data", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_DATA}, 0, 0, DEC, "allowed_media_types" }
75 #define COMMON_OPTS() \
76 { "reorder_queue_size", "Number of packets to buffer for handling of reordered packets", OFFSET(reordering_queue_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, DEC }, \
77 { "buffer_size", "Underlying protocol send/receive buffer size", OFFSET(buffer_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, DEC|ENC }, \
78 { "pkt_size", "Underlying protocol send packet size", OFFSET(pkt_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, ENC } \
81 const AVOption ff_rtsp_options[] = {
82 { "initial_pause", "Don't start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, DEC },
83 FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags),
84 { "rtsp_transport", "RTSP transport protocols", OFFSET(lower_transport_mask), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, DEC|ENC, "rtsp_transport" }, \
85 { "udp", "UDP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
86 { "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
87 { "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, "rtsp_transport" },
88 { "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {.i64 = (1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, "rtsp_transport" },
89 RTSP_FLAG_OPTS("rtsp_flags", "RTSP flags"),
90 { "listen", "Wait for incoming connections", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_LISTEN}, 0, 0, DEC, "rtsp_flags" },
91 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
92 { "min_port", "Minimum local UDP port", OFFSET(rtp_port_min), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MIN}, 0, 65535, DEC|ENC },
93 { "max_port", "Maximum local UDP port", OFFSET(rtp_port_max), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MAX}, 0, 65535, DEC|ENC },
94 { "timeout", "Maximum timeout (in seconds) to wait for incoming connections. -1 is infinite. Implies flag listen", OFFSET(initial_timeout), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, DEC },
99 static const AVOption sdp_options[] = {
100 RTSP_FLAG_OPTS("sdp_flags", "SDP flags"),
101 { "custom_io", "Use custom IO", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_CUSTOM_IO}, 0, 0, DEC, "rtsp_flags" },
102 { "rtcp_to_source", "Send RTCP packets to the source address of received packets", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_RTCP_TO_SOURCE}, 0, 0, DEC, "rtsp_flags" },
103 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
108 static const AVOption rtp_options[] = {
109 RTSP_FLAG_OPTS("rtp_flags", "RTP flags"),
115 static AVDictionary *map_to_opts(RTSPState *rt)
117 AVDictionary *opts = NULL;
120 snprintf(buf, sizeof(buf), "%d", rt->buffer_size);
121 av_dict_set(&opts, "buffer_size", buf, 0);
122 snprintf(buf, sizeof(buf), "%d", rt->pkt_size);
123 av_dict_set(&opts, "pkt_size", buf, 0);
128 static void get_word_until_chars(char *buf, int buf_size,
129 const char *sep, const char **pp)
135 p += strspn(p, SPACE_CHARS);
137 while (!strchr(sep, *p) && *p != '\0') {
138 if ((q - buf) < buf_size - 1)
147 static void get_word_sep(char *buf, int buf_size, const char *sep,
150 if (**pp == '/') (*pp)++;
151 get_word_until_chars(buf, buf_size, sep, pp);
154 static void get_word(char *buf, int buf_size, const char **pp)
156 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
159 /** Parse a string p in the form of Range:npt=xx-xx, and determine the start
161 * Used for seeking in the rtp stream.
163 static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
167 p += strspn(p, SPACE_CHARS);
168 if (!av_stristart(p, "npt=", &p))
171 *start = AV_NOPTS_VALUE;
172 *end = AV_NOPTS_VALUE;
174 get_word_sep(buf, sizeof(buf), "-", &p);
175 if (av_parse_time(start, buf, 1) < 0)
179 get_word_sep(buf, sizeof(buf), "-", &p);
180 av_parse_time(end, buf, 1);
184 static int get_sockaddr(AVFormatContext *s,
185 const char *buf, struct sockaddr_storage *sock)
187 struct addrinfo hints = { 0 }, *ai = NULL;
190 hints.ai_flags = AI_NUMERICHOST;
191 if ((ret = getaddrinfo(buf, NULL, &hints, &ai))) {
192 av_log(s, AV_LOG_ERROR, "getaddrinfo(%s): %s\n",
197 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
203 static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
204 RTSPStream *rtsp_st, AVStream *st)
206 AVCodecParameters *par = st ? st->codecpar : NULL;
210 par->codec_id = handler->codec_id;
211 rtsp_st->dynamic_handler = handler;
213 st->need_parsing = handler->need_parsing;
214 if (handler->priv_data_size) {
215 rtsp_st->dynamic_protocol_context = av_mallocz(handler->priv_data_size);
216 if (!rtsp_st->dynamic_protocol_context)
217 rtsp_st->dynamic_handler = NULL;
221 static void finalize_rtp_handler_init(AVFormatContext *s, RTSPStream *rtsp_st,
224 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->init) {
225 int ret = rtsp_st->dynamic_handler->init(s, st ? st->index : -1,
226 rtsp_st->dynamic_protocol_context);
228 if (rtsp_st->dynamic_protocol_context) {
229 if (rtsp_st->dynamic_handler->close)
230 rtsp_st->dynamic_handler->close(
231 rtsp_st->dynamic_protocol_context);
232 av_free(rtsp_st->dynamic_protocol_context);
234 rtsp_st->dynamic_protocol_context = NULL;
235 rtsp_st->dynamic_handler = NULL;
240 /* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
241 static int sdp_parse_rtpmap(AVFormatContext *s,
242 AVStream *st, RTSPStream *rtsp_st,
243 int payload_type, const char *p)
245 AVCodecParameters *par = st->codecpar;
248 const AVCodecDescriptor *desc;
251 /* See if we can handle this kind of payload.
252 * The space should normally not be there but some Real streams or
253 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
254 * have a trailing space. */
255 get_word_sep(buf, sizeof(buf), "/ ", &p);
256 if (payload_type < RTP_PT_PRIVATE) {
257 /* We are in a standard case
258 * (from http://www.iana.org/assignments/rtp-parameters). */
259 par->codec_id = ff_rtp_codec_id(buf, par->codec_type);
262 if (par->codec_id == AV_CODEC_ID_NONE) {
263 RTPDynamicProtocolHandler *handler =
264 ff_rtp_handler_find_by_name(buf, par->codec_type);
265 init_rtp_handler(handler, rtsp_st, st);
266 /* If no dynamic handler was found, check with the list of standard
267 * allocated types, if such a stream for some reason happens to
268 * use a private payload type. This isn't handled in rtpdec.c, since
269 * the format name from the rtpmap line never is passed into rtpdec. */
270 if (!rtsp_st->dynamic_handler)
271 par->codec_id = ff_rtp_codec_id(buf, par->codec_type);
274 desc = avcodec_descriptor_get(par->codec_id);
275 if (desc && desc->name)
280 get_word_sep(buf, sizeof(buf), "/", &p);
282 switch (par->codec_type) {
283 case AVMEDIA_TYPE_AUDIO:
284 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
285 par->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
286 par->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
288 par->sample_rate = i;
289 avpriv_set_pts_info(st, 32, 1, par->sample_rate);
290 get_word_sep(buf, sizeof(buf), "/", &p);
295 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
297 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
300 case AVMEDIA_TYPE_VIDEO:
301 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
303 avpriv_set_pts_info(st, 32, 1, i);
308 finalize_rtp_handler_init(s, rtsp_st, st);
312 /* parse the attribute line from the fmtp a line of an sdp response. This
313 * is broken out as a function because it is used in rtp_h264.c, which is
315 int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
316 char *value, int value_size)
318 *p += strspn(*p, SPACE_CHARS);
320 get_word_sep(attr, attr_size, "=", p);
323 get_word_sep(value, value_size, ";", p);
331 typedef struct SDPParseState {
333 struct sockaddr_storage default_ip;
335 int skip_media; ///< set if an unknown m= line occurs
336 int nb_default_include_source_addrs; /**< Number of source-specific multicast include source IP address (from SDP content) */
337 struct RTSPSource **default_include_source_addrs; /**< Source-specific multicast include source IP address (from SDP content) */
338 int nb_default_exclude_source_addrs; /**< Number of source-specific multicast exclude source IP address (from SDP content) */
339 struct RTSPSource **default_exclude_source_addrs; /**< Source-specific multicast exclude source IP address (from SDP content) */
342 char delayed_fmtp[2048];
345 static void copy_default_source_addrs(struct RTSPSource **addrs, int count,
346 struct RTSPSource ***dest, int *dest_count)
348 RTSPSource *rtsp_src, *rtsp_src2;
350 for (i = 0; i < count; i++) {
352 rtsp_src2 = av_malloc(sizeof(*rtsp_src2));
355 memcpy(rtsp_src2, rtsp_src, sizeof(*rtsp_src));
356 dynarray_add(dest, dest_count, rtsp_src2);
360 static void parse_fmtp(AVFormatContext *s, RTSPState *rt,
361 int payload_type, const char *line)
365 for (i = 0; i < rt->nb_rtsp_streams; i++) {
366 RTSPStream *rtsp_st = rt->rtsp_streams[i];
367 if (rtsp_st->sdp_payload_type == payload_type &&
368 rtsp_st->dynamic_handler &&
369 rtsp_st->dynamic_handler->parse_sdp_a_line) {
370 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
371 rtsp_st->dynamic_protocol_context, line);
376 static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
377 int letter, const char *buf)
379 RTSPState *rt = s->priv_data;
380 char buf1[64], st_type[64];
382 enum AVMediaType codec_type;
386 RTSPSource *rtsp_src;
387 struct sockaddr_storage sdp_ip;
390 av_log(s, AV_LOG_TRACE, "sdp: %c='%s'\n", letter, buf);
393 if (s1->skip_media && letter != 'm')
397 get_word(buf1, sizeof(buf1), &p);
398 if (strcmp(buf1, "IN") != 0)
400 get_word(buf1, sizeof(buf1), &p);
401 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
403 get_word_sep(buf1, sizeof(buf1), "/", &p);
404 if (get_sockaddr(s, buf1, &sdp_ip))
409 get_word_sep(buf1, sizeof(buf1), "/", &p);
412 if (s->nb_streams == 0) {
413 s1->default_ip = sdp_ip;
414 s1->default_ttl = ttl;
416 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
417 rtsp_st->sdp_ip = sdp_ip;
418 rtsp_st->sdp_ttl = ttl;
422 av_dict_set(&s->metadata, "title", p, 0);
425 if (s->nb_streams == 0) {
426 av_dict_set(&s->metadata, "comment", p, 0);
435 codec_type = AVMEDIA_TYPE_UNKNOWN;
436 get_word(st_type, sizeof(st_type), &p);
437 if (!strcmp(st_type, "audio")) {
438 codec_type = AVMEDIA_TYPE_AUDIO;
439 } else if (!strcmp(st_type, "video")) {
440 codec_type = AVMEDIA_TYPE_VIDEO;
441 } else if (!strcmp(st_type, "application") || !strcmp(st_type, "text")) {
442 codec_type = AVMEDIA_TYPE_DATA;
444 if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) {
448 rtsp_st = av_mallocz(sizeof(RTSPStream));
451 rtsp_st->stream_index = -1;
452 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
454 rtsp_st->sdp_ip = s1->default_ip;
455 rtsp_st->sdp_ttl = s1->default_ttl;
457 copy_default_source_addrs(s1->default_include_source_addrs,
458 s1->nb_default_include_source_addrs,
459 &rtsp_st->include_source_addrs,
460 &rtsp_st->nb_include_source_addrs);
461 copy_default_source_addrs(s1->default_exclude_source_addrs,
462 s1->nb_default_exclude_source_addrs,
463 &rtsp_st->exclude_source_addrs,
464 &rtsp_st->nb_exclude_source_addrs);
466 get_word(buf1, sizeof(buf1), &p); /* port */
467 rtsp_st->sdp_port = atoi(buf1);
469 get_word(buf1, sizeof(buf1), &p); /* protocol */
470 if (!strcmp(buf1, "udp"))
471 rt->transport = RTSP_TRANSPORT_RAW;
472 else if (strstr(buf1, "/AVPF") || strstr(buf1, "/SAVPF"))
473 rtsp_st->feedback = 1;
475 /* XXX: handle list of formats */
476 get_word(buf1, sizeof(buf1), &p); /* format list */
477 rtsp_st->sdp_payload_type = atoi(buf1);
479 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
480 /* no corresponding stream */
481 if (rt->transport == RTSP_TRANSPORT_RAW) {
482 if (CONFIG_RTPDEC && !rt->ts)
483 rt->ts = ff_mpegts_parse_open(s);
485 RTPDynamicProtocolHandler *handler;
486 handler = ff_rtp_handler_find_by_id(
487 rtsp_st->sdp_payload_type, AVMEDIA_TYPE_DATA);
488 init_rtp_handler(handler, rtsp_st, NULL);
489 finalize_rtp_handler_init(s, rtsp_st, NULL);
491 } else if (rt->server_type == RTSP_SERVER_WMS &&
492 codec_type == AVMEDIA_TYPE_DATA) {
493 /* RTX stream, a stream that carries all the other actual
494 * audio/video streams. Don't expose this to the callers. */
496 st = avformat_new_stream(s, NULL);
499 st->id = rt->nb_rtsp_streams - 1;
500 rtsp_st->stream_index = st->index;
501 st->codecpar->codec_type = codec_type;
502 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
503 RTPDynamicProtocolHandler *handler;
504 /* if standard payload type, we can find the codec right now */
505 ff_rtp_get_codec_info(st->codecpar, rtsp_st->sdp_payload_type);
506 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
507 st->codecpar->sample_rate > 0)
508 avpriv_set_pts_info(st, 32, 1, st->codecpar->sample_rate);
509 /* Even static payload types may need a custom depacketizer */
510 handler = ff_rtp_handler_find_by_id(
511 rtsp_st->sdp_payload_type, st->codecpar->codec_type);
512 init_rtp_handler(handler, rtsp_st, st);
513 finalize_rtp_handler_init(s, rtsp_st, st);
515 if (rt->default_lang[0])
516 av_dict_set(&st->metadata, "language", rt->default_lang, 0);
518 /* put a default control url */
519 av_strlcpy(rtsp_st->control_url, rt->control_uri,
520 sizeof(rtsp_st->control_url));
523 if (av_strstart(p, "control:", &p)) {
524 if (s->nb_streams == 0) {
525 if (!strncmp(p, "rtsp://", 7))
526 av_strlcpy(rt->control_uri, p,
527 sizeof(rt->control_uri));
530 /* get the control url */
531 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
533 /* XXX: may need to add full url resolution */
534 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
536 if (proto[0] == '\0') {
537 /* relative control URL */
538 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
539 av_strlcat(rtsp_st->control_url, "/",
540 sizeof(rtsp_st->control_url));
541 av_strlcat(rtsp_st->control_url, p,
542 sizeof(rtsp_st->control_url));
544 av_strlcpy(rtsp_st->control_url, p,
545 sizeof(rtsp_st->control_url));
547 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
548 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
549 get_word(buf1, sizeof(buf1), &p);
550 payload_type = atoi(buf1);
551 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
552 if (rtsp_st->stream_index >= 0) {
553 st = s->streams[rtsp_st->stream_index];
554 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
558 parse_fmtp(s, rt, payload_type, s1->delayed_fmtp);
560 } else if (av_strstart(p, "fmtp:", &p) ||
561 av_strstart(p, "framesize:", &p)) {
562 // let dynamic protocol handlers have a stab at the line.
563 get_word(buf1, sizeof(buf1), &p);
564 payload_type = atoi(buf1);
565 if (s1->seen_rtpmap) {
566 parse_fmtp(s, rt, payload_type, buf);
569 av_strlcpy(s1->delayed_fmtp, buf, sizeof(s1->delayed_fmtp));
571 } else if (av_strstart(p, "ssrc:", &p) && s->nb_streams > 0) {
572 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
573 get_word(buf1, sizeof(buf1), &p);
574 rtsp_st->ssrc = strtoll(buf1, NULL, 10);
575 } else if (av_strstart(p, "range:", &p)) {
578 // this is so that seeking on a streamed file can work.
579 rtsp_parse_range_npt(p, &start, &end);
580 s->start_time = start;
581 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
582 s->duration = (end == AV_NOPTS_VALUE) ?
583 AV_NOPTS_VALUE : end - start;
584 } else if (av_strstart(p, "lang:", &p)) {
585 if (s->nb_streams > 0) {
586 get_word(buf1, sizeof(buf1), &p);
587 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
588 if (rtsp_st->stream_index >= 0) {
589 st = s->streams[rtsp_st->stream_index];
590 av_dict_set(&st->metadata, "language", buf1, 0);
593 get_word(rt->default_lang, sizeof(rt->default_lang), &p);
594 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
596 rt->transport = RTSP_TRANSPORT_RDT;
597 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
599 st = s->streams[s->nb_streams - 1];
600 st->codecpar->sample_rate = atoi(p);
601 } else if (av_strstart(p, "crypto:", &p) && s->nb_streams > 0) {
603 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
604 get_word(buf1, sizeof(buf1), &p); // ignore tag
605 get_word(rtsp_st->crypto_suite, sizeof(rtsp_st->crypto_suite), &p);
606 p += strspn(p, SPACE_CHARS);
607 if (av_strstart(p, "inline:", &p))
608 get_word(rtsp_st->crypto_params, sizeof(rtsp_st->crypto_params), &p);
609 } else if (av_strstart(p, "source-filter:", &p)) {
611 get_word(buf1, sizeof(buf1), &p);
612 if (strcmp(buf1, "incl") && strcmp(buf1, "excl"))
614 exclude = !strcmp(buf1, "excl");
616 get_word(buf1, sizeof(buf1), &p);
617 if (strcmp(buf1, "IN") != 0)
619 get_word(buf1, sizeof(buf1), &p);
620 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6") && strcmp(buf1, "*"))
622 // not checking that the destination address actually matches or is wildcard
623 get_word(buf1, sizeof(buf1), &p);
626 rtsp_src = av_mallocz(sizeof(*rtsp_src));
629 get_word(rtsp_src->addr, sizeof(rtsp_src->addr), &p);
631 if (s->nb_streams == 0) {
632 dynarray_add(&s1->default_exclude_source_addrs, &s1->nb_default_exclude_source_addrs, rtsp_src);
634 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
635 dynarray_add(&rtsp_st->exclude_source_addrs, &rtsp_st->nb_exclude_source_addrs, rtsp_src);
638 if (s->nb_streams == 0) {
639 dynarray_add(&s1->default_include_source_addrs, &s1->nb_default_include_source_addrs, rtsp_src);
641 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
642 dynarray_add(&rtsp_st->include_source_addrs, &rtsp_st->nb_include_source_addrs, rtsp_src);
647 if (rt->server_type == RTSP_SERVER_WMS)
648 ff_wms_parse_sdp_a_line(s, p);
649 if (s->nb_streams > 0) {
650 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
652 if (rt->server_type == RTSP_SERVER_REAL)
653 ff_real_parse_sdp_a_line(s, rtsp_st->stream_index, p);
655 if (rtsp_st->dynamic_handler &&
656 rtsp_st->dynamic_handler->parse_sdp_a_line)
657 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
658 rtsp_st->stream_index,
659 rtsp_st->dynamic_protocol_context, buf);
666 int ff_sdp_parse(AVFormatContext *s, const char *content)
670 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
671 * contain long SDP lines containing complete ASF Headers (several
672 * kB) or arrays of MDPR (RM stream descriptor) headers plus
673 * "rulebooks" describing their properties. Therefore, the SDP line
676 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
677 * in rtpdec_xiph.c. */
679 SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state;
683 p += strspn(p, SPACE_CHARS);
691 /* get the content */
693 while (*p != '\n' && *p != '\r' && *p != '\0') {
694 if ((q - buf) < sizeof(buf) - 1)
699 sdp_parse_line(s, s1, letter, buf);
701 while (*p != '\n' && *p != '\0')
707 for (i = 0; i < s1->nb_default_include_source_addrs; i++)
708 av_free(s1->default_include_source_addrs[i]);
709 av_freep(&s1->default_include_source_addrs);
710 for (i = 0; i < s1->nb_default_exclude_source_addrs; i++)
711 av_free(s1->default_exclude_source_addrs[i]);
712 av_freep(&s1->default_exclude_source_addrs);
716 #endif /* CONFIG_RTPDEC */
718 void ff_rtsp_undo_setup(AVFormatContext *s, int send_packets)
720 RTSPState *rt = s->priv_data;
723 for (i = 0; i < rt->nb_rtsp_streams; i++) {
724 RTSPStream *rtsp_st = rt->rtsp_streams[i];
727 if (rtsp_st->transport_priv) {
729 AVFormatContext *rtpctx = rtsp_st->transport_priv;
730 av_write_trailer(rtpctx);
731 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
732 if (CONFIG_RTSP_MUXER && rtpctx->pb && send_packets)
733 ff_rtsp_tcp_write_packet(s, rtsp_st);
734 ffio_free_dyn_buf(&rtpctx->pb);
736 avio_close(rtpctx->pb);
738 avformat_free_context(rtpctx);
739 } else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RDT)
740 ff_rdt_parse_close(rtsp_st->transport_priv);
741 else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RTP)
742 ff_rtp_parse_close(rtsp_st->transport_priv);
744 rtsp_st->transport_priv = NULL;
745 if (rtsp_st->rtp_handle)
746 ffurl_close(rtsp_st->rtp_handle);
747 rtsp_st->rtp_handle = NULL;
751 /* close and free RTSP streams */
752 void ff_rtsp_close_streams(AVFormatContext *s)
754 RTSPState *rt = s->priv_data;
758 ff_rtsp_undo_setup(s, 0);
759 for (i = 0; i < rt->nb_rtsp_streams; i++) {
760 rtsp_st = rt->rtsp_streams[i];
762 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context) {
763 if (rtsp_st->dynamic_handler->close)
764 rtsp_st->dynamic_handler->close(
765 rtsp_st->dynamic_protocol_context);
766 av_free(rtsp_st->dynamic_protocol_context);
768 for (j = 0; j < rtsp_st->nb_include_source_addrs; j++)
769 av_free(rtsp_st->include_source_addrs[j]);
770 av_freep(&rtsp_st->include_source_addrs);
771 for (j = 0; j < rtsp_st->nb_exclude_source_addrs; j++)
772 av_free(rtsp_st->exclude_source_addrs[j]);
773 av_freep(&rtsp_st->exclude_source_addrs);
778 av_free(rt->rtsp_streams);
780 avformat_close_input(&rt->asf_ctx);
782 if (CONFIG_RTPDEC && rt->ts)
783 ff_mpegts_parse_close(rt->ts);
784 av_freep(&rt->protocols);
786 av_free(rt->recvbuf);
789 int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
791 RTSPState *rt = s->priv_data;
793 int reordering_queue_size = rt->reordering_queue_size;
794 if (reordering_queue_size < 0) {
795 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
796 reordering_queue_size = 0;
798 reordering_queue_size = RTP_REORDER_QUEUE_DEFAULT_SIZE;
801 /* open the RTP context */
802 if (rtsp_st->stream_index >= 0)
803 st = s->streams[rtsp_st->stream_index];
805 s->ctx_flags |= AVFMTCTX_NOHEADER;
807 if (CONFIG_RTSP_MUXER && s->oformat) {
808 int ret = ff_rtp_chain_mux_open((AVFormatContext **)&rtsp_st->transport_priv,
809 s, st, rtsp_st->rtp_handle,
810 RTSP_TCP_MAX_PACKET_SIZE,
811 rtsp_st->stream_index);
812 /* Ownership of rtp_handle is passed to the rtp mux context */
813 rtsp_st->rtp_handle = NULL;
816 st->time_base = ((AVFormatContext*)rtsp_st->transport_priv)->streams[0]->time_base;
817 } else if (rt->transport == RTSP_TRANSPORT_RAW) {
818 return 0; // Don't need to open any parser here
819 } else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RDT)
820 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
821 rtsp_st->dynamic_protocol_context,
822 rtsp_st->dynamic_handler);
823 else if (CONFIG_RTPDEC)
824 rtsp_st->transport_priv = ff_rtp_parse_open(s, st,
825 rtsp_st->sdp_payload_type,
826 reordering_queue_size);
828 if (!rtsp_st->transport_priv) {
829 return AVERROR(ENOMEM);
830 } else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RTP &&
832 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
833 rtpctx->ssrc = rtsp_st->ssrc;
834 if (rtsp_st->dynamic_handler) {
835 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
836 rtsp_st->dynamic_protocol_context,
837 rtsp_st->dynamic_handler);
839 if (rtsp_st->crypto_suite[0])
840 ff_rtp_parse_set_crypto(rtsp_st->transport_priv,
841 rtsp_st->crypto_suite,
842 rtsp_st->crypto_params);
848 #if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
849 static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
856 q += strspn(q, SPACE_CHARS);
857 v = strtol(q, &p, 10);
861 v = strtol(p, &p, 10);
870 /* XXX: only one transport specification is parsed */
871 static void rtsp_parse_transport(AVFormatContext *s,
872 RTSPMessageHeader *reply, const char *p)
874 char transport_protocol[16];
876 char lower_transport[16];
878 RTSPTransportField *th;
881 reply->nb_transports = 0;
884 p += strspn(p, SPACE_CHARS);
888 th = &reply->transports[reply->nb_transports];
890 get_word_sep(transport_protocol, sizeof(transport_protocol),
892 if (!av_strcasecmp (transport_protocol, "rtp")) {
893 get_word_sep(profile, sizeof(profile), "/;,", &p);
894 lower_transport[0] = '\0';
895 /* rtp/avp/<protocol> */
897 get_word_sep(lower_transport, sizeof(lower_transport),
900 th->transport = RTSP_TRANSPORT_RTP;
901 } else if (!av_strcasecmp (transport_protocol, "x-pn-tng") ||
902 !av_strcasecmp (transport_protocol, "x-real-rdt")) {
903 /* x-pn-tng/<protocol> */
904 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
906 th->transport = RTSP_TRANSPORT_RDT;
907 } else if (!av_strcasecmp(transport_protocol, "raw")) {
908 get_word_sep(profile, sizeof(profile), "/;,", &p);
909 lower_transport[0] = '\0';
910 /* raw/raw/<protocol> */
912 get_word_sep(lower_transport, sizeof(lower_transport),
915 th->transport = RTSP_TRANSPORT_RAW;
917 if (!av_strcasecmp(lower_transport, "TCP"))
918 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
920 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
924 /* get each parameter */
925 while (*p != '\0' && *p != ',') {
926 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
927 if (!strcmp(parameter, "port")) {
930 rtsp_parse_range(&th->port_min, &th->port_max, &p);
932 } else if (!strcmp(parameter, "client_port")) {
935 rtsp_parse_range(&th->client_port_min,
936 &th->client_port_max, &p);
938 } else if (!strcmp(parameter, "server_port")) {
941 rtsp_parse_range(&th->server_port_min,
942 &th->server_port_max, &p);
944 } else if (!strcmp(parameter, "interleaved")) {
947 rtsp_parse_range(&th->interleaved_min,
948 &th->interleaved_max, &p);
950 } else if (!strcmp(parameter, "multicast")) {
951 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
952 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
953 } else if (!strcmp(parameter, "ttl")) {
957 th->ttl = strtol(p, &end, 10);
960 } else if (!strcmp(parameter, "destination")) {
963 get_word_sep(buf, sizeof(buf), ";,", &p);
964 get_sockaddr(s, buf, &th->destination);
966 } else if (!strcmp(parameter, "source")) {
969 get_word_sep(buf, sizeof(buf), ";,", &p);
970 av_strlcpy(th->source, buf, sizeof(th->source));
972 } else if (!strcmp(parameter, "mode")) {
975 get_word_sep(buf, sizeof(buf), ";, ", &p);
976 if (!strcmp(buf, "record") ||
977 !strcmp(buf, "receive"))
982 while (*p != ';' && *p != '\0' && *p != ',')
990 reply->nb_transports++;
991 if (reply->nb_transports >= RTSP_MAX_TRANSPORTS)
996 static void handle_rtp_info(RTSPState *rt, const char *url,
997 uint32_t seq, uint32_t rtptime)
1000 if (!rtptime || !url[0])
1002 if (rt->transport != RTSP_TRANSPORT_RTP)
1004 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1005 RTSPStream *rtsp_st = rt->rtsp_streams[i];
1006 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1009 if (!strcmp(rtsp_st->control_url, url)) {
1010 rtpctx->base_timestamp = rtptime;
1016 static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
1019 char key[20], value[1024], url[1024] = "";
1020 uint32_t seq = 0, rtptime = 0;
1023 p += strspn(p, SPACE_CHARS);
1026 get_word_sep(key, sizeof(key), "=", &p);
1030 get_word_sep(value, sizeof(value), ";, ", &p);
1032 if (!strcmp(key, "url"))
1033 av_strlcpy(url, value, sizeof(url));
1034 else if (!strcmp(key, "seq"))
1035 seq = strtoul(value, NULL, 10);
1036 else if (!strcmp(key, "rtptime"))
1037 rtptime = strtoul(value, NULL, 10);
1039 handle_rtp_info(rt, url, seq, rtptime);
1048 handle_rtp_info(rt, url, seq, rtptime);
1051 void ff_rtsp_parse_line(AVFormatContext *s,
1052 RTSPMessageHeader *reply, const char *buf,
1053 RTSPState *rt, const char *method)
1057 /* NOTE: we do case independent match for broken servers */
1059 if (av_stristart(p, "Session:", &p)) {
1061 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
1062 if (av_stristart(p, ";timeout=", &p) &&
1063 (t = strtol(p, NULL, 10)) > 0) {
1066 } else if (av_stristart(p, "Content-Length:", &p)) {
1067 reply->content_length = strtol(p, NULL, 10);
1068 } else if (av_stristart(p, "Transport:", &p)) {
1069 rtsp_parse_transport(s, reply, p);
1070 } else if (av_stristart(p, "CSeq:", &p)) {
1071 reply->seq = strtol(p, NULL, 10);
1072 } else if (av_stristart(p, "Range:", &p)) {
1073 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
1074 } else if (av_stristart(p, "RealChallenge1:", &p)) {
1075 p += strspn(p, SPACE_CHARS);
1076 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
1077 } else if (av_stristart(p, "Server:", &p)) {
1078 p += strspn(p, SPACE_CHARS);
1079 av_strlcpy(reply->server, p, sizeof(reply->server));
1080 } else if (av_stristart(p, "Notice:", &p) ||
1081 av_stristart(p, "X-Notice:", &p)) {
1082 reply->notice = strtol(p, NULL, 10);
1083 } else if (av_stristart(p, "Location:", &p)) {
1084 p += strspn(p, SPACE_CHARS);
1085 av_strlcpy(reply->location, p , sizeof(reply->location));
1086 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
1087 p += strspn(p, SPACE_CHARS);
1088 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
1089 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
1090 p += strspn(p, SPACE_CHARS);
1091 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
1092 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
1093 p += strspn(p, SPACE_CHARS);
1094 if (method && !strcmp(method, "DESCRIBE"))
1095 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
1096 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
1097 p += strspn(p, SPACE_CHARS);
1098 if (method && !strcmp(method, "PLAY"))
1099 rtsp_parse_rtp_info(rt, p);
1100 } else if (av_stristart(p, "Public:", &p) && rt) {
1101 if (strstr(p, "GET_PARAMETER") &&
1102 method && !strcmp(method, "OPTIONS"))
1103 rt->get_parameter_supported = 1;
1104 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
1105 p += strspn(p, SPACE_CHARS);
1106 rt->accept_dynamic_rate = atoi(p);
1107 } else if (av_stristart(p, "Content-Type:", &p)) {
1108 p += strspn(p, SPACE_CHARS);
1109 av_strlcpy(reply->content_type, p, sizeof(reply->content_type));
1113 /* skip a RTP/TCP interleaved packet */
1114 void ff_rtsp_skip_packet(AVFormatContext *s)
1116 RTSPState *rt = s->priv_data;
1120 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
1123 len = AV_RB16(buf + 1);
1125 av_log(s, AV_LOG_TRACE, "skipping RTP packet len=%d\n", len);
1130 if (len1 > sizeof(buf))
1132 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
1139 int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
1140 unsigned char **content_ptr,
1141 int return_on_interleaved_data, const char *method)
1143 RTSPState *rt = s->priv_data;
1144 char buf[4096], buf1[1024], *q;
1147 int ret, content_length, line_count = 0, request = 0;
1148 unsigned char *content = NULL;
1154 memset(reply, 0, sizeof(*reply));
1156 /* parse reply (XXX: use buffers) */
1157 rt->last_reply[0] = '\0';
1161 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
1162 av_log(s, AV_LOG_TRACE, "ret=%d c=%02x [%c]\n", ret, ch, ch);
1167 if (ch == '$' && q == buf) {
1168 if (return_on_interleaved_data) {
1171 ff_rtsp_skip_packet(s);
1172 } else if (ch != '\r') {
1173 if ((q - buf) < sizeof(buf) - 1)
1179 av_log(s, AV_LOG_TRACE, "line='%s'\n", buf);
1181 /* test if last line */
1185 if (line_count == 0) {
1186 /* get reply code */
1187 get_word(buf1, sizeof(buf1), &p);
1188 if (!strncmp(buf1, "RTSP/", 5)) {
1189 get_word(buf1, sizeof(buf1), &p);
1190 reply->status_code = atoi(buf1);
1191 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1193 av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method
1194 get_word(buf1, sizeof(buf1), &p); // object
1198 ff_rtsp_parse_line(s, reply, p, rt, method);
1199 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
1200 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1205 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0' && !request)
1206 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
1208 content_length = reply->content_length;
1209 if (content_length > 0) {
1210 /* leave some room for a trailing '\0' (useful for simple parsing) */
1211 content = av_malloc(content_length + 1);
1213 return AVERROR(ENOMEM);
1214 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1215 content[content_length] = '\0';
1218 *content_ptr = content;
1224 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1225 const char* ptr = buf;
1227 if (!strcmp(reply->reason, "OPTIONS")) {
1228 snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n");
1230 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq);
1231 if (reply->session_id[0])
1232 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n",
1235 snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n");
1237 av_strlcat(buf, "\r\n", sizeof(buf));
1239 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1240 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1243 ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr));
1245 rt->last_cmd_time = av_gettime_relative();
1246 /* Even if the request from the server had data, it is not the data
1247 * that the caller wants or expects. The memory could also be leaked
1248 * if the actual following reply has content data. */
1250 av_freep(content_ptr);
1251 /* If method is set, this is called from ff_rtsp_send_cmd,
1252 * where a reply to exactly this request is awaited. For
1253 * callers from within packet receiving, we just want to
1254 * return to the caller and go back to receiving packets. */
1260 if (rt->seq != reply->seq) {
1261 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
1262 rt->seq, reply->seq);
1266 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
1267 reply->notice == 2104 /* Start-of-Stream Reached */ ||
1268 reply->notice == 2306 /* Continuous Feed Terminated */) {
1269 rt->state = RTSP_STATE_IDLE;
1270 } else if (reply->notice >= 4400 && reply->notice < 5500) {
1271 return AVERROR(EIO); /* data or server error */
1272 } else if (reply->notice == 2401 /* Ticket Expired */ ||
1273 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
1274 return AVERROR(EPERM);
1280 * Send a command to the RTSP server without waiting for the reply.
1282 * @param s RTSP (de)muxer context
1283 * @param method the method for the request
1284 * @param url the target url for the request
1285 * @param headers extra header lines to include in the request
1286 * @param send_content if non-null, the data to send as request body content
1287 * @param send_content_length the length of the send_content data, or 0 if
1288 * send_content is null
1290 * @return zero if success, nonzero otherwise
1292 static int rtsp_send_cmd_with_content_async(AVFormatContext *s,
1293 const char *method, const char *url,
1294 const char *headers,
1295 const unsigned char *send_content,
1296 int send_content_length)
1298 RTSPState *rt = s->priv_data;
1299 char buf[4096], *out_buf;
1300 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1302 /* Add in RTSP headers */
1305 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1307 av_strlcat(buf, headers, sizeof(buf));
1308 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
1309 av_strlcatf(buf, sizeof(buf), "User-Agent: %s\r\n", LIBAVFORMAT_IDENT);
1310 if (rt->session_id[0] != '\0' && (!headers ||
1311 !strstr(headers, "\nIf-Match:"))) {
1312 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
1315 char *str = ff_http_auth_create_response(&rt->auth_state,
1316 rt->auth, url, method);
1318 av_strlcat(buf, str, sizeof(buf));
1321 if (send_content_length > 0 && send_content)
1322 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
1323 av_strlcat(buf, "\r\n", sizeof(buf));
1325 /* base64 encode rtsp if tunneling */
1326 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1327 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1328 out_buf = base64buf;
1331 av_log(s, AV_LOG_TRACE, "Sending:\n%s--\n", buf);
1333 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
1334 if (send_content_length > 0 && send_content) {
1335 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1336 avpriv_report_missing_feature(s, "Tunneling of RTSP requests with content data");
1337 return AVERROR_PATCHWELCOME;
1339 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
1341 rt->last_cmd_time = av_gettime_relative();
1346 int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
1347 const char *url, const char *headers)
1349 return rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
1352 int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
1353 const char *headers, RTSPMessageHeader *reply,
1354 unsigned char **content_ptr)
1356 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
1357 content_ptr, NULL, 0);
1360 int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
1361 const char *method, const char *url,
1363 RTSPMessageHeader *reply,
1364 unsigned char **content_ptr,
1365 const unsigned char *send_content,
1366 int send_content_length)
1368 RTSPState *rt = s->priv_data;
1369 HTTPAuthType cur_auth_type;
1370 int ret, attempts = 0;
1373 cur_auth_type = rt->auth_state.auth_type;
1374 if ((ret = rtsp_send_cmd_with_content_async(s, method, url, header,
1376 send_content_length)))
1379 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
1383 if (reply->status_code == 401 &&
1384 (cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) &&
1385 rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2)
1388 if (reply->status_code > 400){
1389 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
1393 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1399 int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
1400 int lower_transport, const char *real_challenge)
1402 RTSPState *rt = s->priv_data;
1403 int rtx = 0, j, i, err, interleave = 0, port_off;
1404 RTSPStream *rtsp_st;
1405 RTSPMessageHeader reply1, *reply = &reply1;
1407 const char *trans_pref;
1409 if (rt->transport == RTSP_TRANSPORT_RDT)
1410 trans_pref = "x-pn-tng";
1411 else if (rt->transport == RTSP_TRANSPORT_RAW)
1412 trans_pref = "RAW/RAW";
1414 trans_pref = "RTP/AVP";
1416 /* default timeout: 1 minute */
1419 /* for each stream, make the setup request */
1420 /* XXX: we assume the same server is used for the control of each
1423 /* Choose a random starting offset within the first half of the
1424 * port range, to allow for a number of ports to try even if the offset
1425 * happens to be at the end of the random range. */
1426 port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2);
1427 /* even random offset */
1428 port_off -= port_off & 0x01;
1430 for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) {
1431 char transport[2048];
1434 * WMS serves all UDP data over a single connection, the RTX, which
1435 * isn't necessarily the first in the SDP but has to be the first
1436 * to be set up, else the second/third SETUP will fail with a 461.
1438 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1439 rt->server_type == RTSP_SERVER_WMS) {
1442 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1443 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1445 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1449 if (rtx == rt->nb_rtsp_streams)
1450 return -1; /* no RTX found */
1451 rtsp_st = rt->rtsp_streams[rtx];
1453 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1455 rtsp_st = rt->rtsp_streams[i];
1458 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
1461 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1462 port = reply->transports[0].client_port_min;
1466 /* first try in specified port range */
1467 while (j <= rt->rtp_port_max) {
1468 AVDictionary *opts = map_to_opts(rt);
1470 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1471 "?localport=%d", j);
1472 /* we will use two ports per rtp stream (rtp and rtcp) */
1474 err = ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
1475 &s->interrupt_callback, &opts, rt->protocols, NULL);
1477 av_dict_free(&opts);
1483 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1488 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
1490 snprintf(transport, sizeof(transport) - 1,
1491 "%s/UDP;", trans_pref);
1492 if (rt->server_type != RTSP_SERVER_REAL)
1493 av_strlcat(transport, "unicast;", sizeof(transport));
1494 av_strlcatf(transport, sizeof(transport),
1495 "client_port=%d", port);
1496 if (rt->transport == RTSP_TRANSPORT_RTP &&
1497 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
1498 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1502 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1503 /* For WMS streams, the application streams are only used for
1504 * UDP. When trying to set it up for TCP streams, the server
1505 * will return an error. Therefore, we skip those streams. */
1506 if (rt->server_type == RTSP_SERVER_WMS &&
1507 (rtsp_st->stream_index < 0 ||
1508 s->streams[rtsp_st->stream_index]->codecpar->codec_type ==
1511 snprintf(transport, sizeof(transport) - 1,
1512 "%s/TCP;", trans_pref);
1513 if (rt->transport != RTSP_TRANSPORT_RDT)
1514 av_strlcat(transport, "unicast;", sizeof(transport));
1515 av_strlcatf(transport, sizeof(transport),
1516 "interleaved=%d-%d",
1517 interleave, interleave + 1);
1521 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
1522 snprintf(transport, sizeof(transport) - 1,
1523 "%s/UDP;multicast", trans_pref);
1526 av_strlcat(transport, ";mode=record", sizeof(transport));
1527 } else if (rt->server_type == RTSP_SERVER_REAL ||
1528 rt->server_type == RTSP_SERVER_WMS)
1529 av_strlcat(transport, ";mode=play", sizeof(transport));
1530 snprintf(cmd, sizeof(cmd),
1531 "Transport: %s\r\n",
1533 if (rt->accept_dynamic_rate)
1534 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
1535 if (CONFIG_RTPDEC && i == 0 && rt->server_type == RTSP_SERVER_REAL) {
1536 char real_res[41], real_csum[9];
1537 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1539 av_strlcatf(cmd, sizeof(cmd),
1541 "RealChallenge2: %s, sd=%s\r\n",
1542 rt->session_id, real_res, real_csum);
1544 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
1545 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1548 } else if (reply->status_code != RTSP_STATUS_OK ||
1549 reply->nb_transports != 1) {
1550 err = AVERROR_INVALIDDATA;
1554 /* XXX: same protocol for all streams is required */
1556 if (reply->transports[0].lower_transport != rt->lower_transport ||
1557 reply->transports[0].transport != rt->transport) {
1558 err = AVERROR_INVALIDDATA;
1562 rt->lower_transport = reply->transports[0].lower_transport;
1563 rt->transport = reply->transports[0].transport;
1566 /* Fail if the server responded with another lower transport mode
1567 * than what we requested. */
1568 if (reply->transports[0].lower_transport != lower_transport) {
1569 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1570 err = AVERROR_INVALIDDATA;
1574 switch(reply->transports[0].lower_transport) {
1575 case RTSP_LOWER_TRANSPORT_TCP:
1576 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1577 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1580 case RTSP_LOWER_TRANSPORT_UDP: {
1581 char url[1024], options[30] = "";
1582 const char *peer = host;
1584 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
1585 av_strlcpy(options, "?connect=1", sizeof(options));
1586 /* Use source address if specified */
1587 if (reply->transports[0].source[0])
1588 peer = reply->transports[0].source;
1589 ff_url_join(url, sizeof(url), "rtp", NULL, peer,
1590 reply->transports[0].server_port_min, "%s", options);
1591 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1592 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1593 err = AVERROR_INVALIDDATA;
1598 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
1599 char url[1024], namebuf[50], optbuf[20] = "";
1600 struct sockaddr_storage addr;
1603 if (reply->transports[0].destination.ss_family) {
1604 addr = reply->transports[0].destination;
1605 port = reply->transports[0].port_min;
1606 ttl = reply->transports[0].ttl;
1608 addr = rtsp_st->sdp_ip;
1609 port = rtsp_st->sdp_port;
1610 ttl = rtsp_st->sdp_ttl;
1613 snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
1614 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1615 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1616 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
1617 port, "%s", optbuf);
1618 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
1619 &s->interrupt_callback, NULL, rt->protocols, NULL) < 0) {
1620 err = AVERROR_INVALIDDATA;
1627 if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
1631 if (rt->nb_rtsp_streams && reply->timeout > 0)
1632 rt->timeout = reply->timeout;
1634 if (rt->server_type == RTSP_SERVER_REAL)
1635 rt->need_subscription = 1;
1640 ff_rtsp_undo_setup(s, 0);
1644 void ff_rtsp_close_connections(AVFormatContext *s)
1646 RTSPState *rt = s->priv_data;
1647 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1648 ffurl_close(rt->rtsp_hd);
1649 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
1652 int ff_rtsp_connect(AVFormatContext *s)
1654 RTSPState *rt = s->priv_data;
1655 char proto[128], host[1024], path[1024];
1656 char tcpname[1024], cmd[2048], auth[128];
1657 const char *lower_rtsp_proto = "tcp";
1658 int port, err, tcp_fd;
1659 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
1660 int lower_transport_mask = 0;
1661 int default_port = RTSP_DEFAULT_PORT;
1662 char real_challenge[64] = "";
1663 struct sockaddr_storage peer;
1664 socklen_t peer_len = sizeof(peer);
1666 if (rt->rtp_port_max < rt->rtp_port_min) {
1667 av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1668 "than min port %d\n", rt->rtp_port_max,
1670 return AVERROR(EINVAL);
1673 if (!ff_network_init())
1674 return AVERROR(EIO);
1676 if (!rt->protocols) {
1677 rt->protocols = ffurl_get_protocols(s->protocol_whitelist,
1678 s->protocol_blacklist);
1680 return AVERROR(ENOMEM);
1683 if (s->max_delay < 0) /* Not set by the caller */
1684 s->max_delay = s->iformat ? DEFAULT_REORDERING_DELAY : 0;
1686 rt->control_transport = RTSP_MODE_PLAIN;
1687 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1688 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1689 rt->control_transport = RTSP_MODE_TUNNEL;
1691 /* Only pass through valid flags from here */
1692 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
1695 /* extract hostname and port */
1696 av_url_split(proto, sizeof(proto), auth, sizeof(auth),
1697 host, sizeof(host), &port, path, sizeof(path), s->filename);
1699 if (!strcmp(proto, "rtsps")) {
1700 lower_rtsp_proto = "tls";
1701 default_port = RTSPS_DEFAULT_PORT;
1702 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1706 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
1709 port = default_port;
1711 lower_transport_mask = rt->lower_transport_mask;
1713 if (!lower_transport_mask)
1714 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
1717 /* Only UDP or TCP - UDP multicast isn't supported. */
1718 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1719 (1 << RTSP_LOWER_TRANSPORT_TCP);
1720 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
1721 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
1722 "only UDP and TCP are supported for output.\n");
1723 err = AVERROR(EINVAL);
1728 /* Construct the URI used in request; this is similar to s->filename,
1729 * but with authentication credentials removed and RTSP specific options
1731 ff_url_join(rt->control_uri, sizeof(rt->control_uri), proto, NULL,
1732 host, port, "%s", path);
1734 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1735 /* set up initial handshake for tunneling */
1736 char httpname[1024];
1737 char sessioncookie[17];
1740 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
1741 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1742 av_get_random_seed(), av_get_random_seed());
1745 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1746 &s->interrupt_callback, rt->protocols) < 0) {
1751 /* generate GET headers */
1752 snprintf(headers, sizeof(headers),
1753 "x-sessioncookie: %s\r\n"
1754 "Accept: application/x-rtsp-tunnelled\r\n"
1755 "Pragma: no-cache\r\n"
1756 "Cache-Control: no-cache\r\n",
1758 av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
1760 /* complete the connection */
1761 if (ffurl_connect(rt->rtsp_hd, NULL)) {
1767 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
1768 &s->interrupt_callback, rt->protocols) < 0 ) {
1773 /* generate POST headers */
1774 snprintf(headers, sizeof(headers),
1775 "x-sessioncookie: %s\r\n"
1776 "Content-Type: application/x-rtsp-tunnelled\r\n"
1777 "Pragma: no-cache\r\n"
1778 "Cache-Control: no-cache\r\n"
1779 "Content-Length: 32767\r\n"
1780 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1782 av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
1783 av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
1785 /* Initialize the authentication state for the POST session. The HTTP
1786 * protocol implementation doesn't properly handle multi-pass
1787 * authentication for POST requests, since it would require one of
1789 * - implementing Expect: 100-continue, which many HTTP servers
1790 * don't support anyway, even less the RTSP servers that do HTTP
1792 * - sending the whole POST data until getting a 401 reply specifying
1793 * what authentication method to use, then resending all that data
1794 * - waiting for potential 401 replies directly after sending the
1795 * POST header (waiting for some unspecified time)
1796 * Therefore, we copy the full auth state, which works for both basic
1797 * and digest. (For digest, we would have to synchronize the nonce
1798 * count variable between the two sessions, if we'd do more requests
1799 * with the original session, though.)
1801 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1803 /* complete the connection */
1804 if (ffurl_connect(rt->rtsp_hd_out, NULL)) {
1809 /* open the tcp connection */
1810 ff_url_join(tcpname, sizeof(tcpname), lower_rtsp_proto, NULL,
1812 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
1813 &s->interrupt_callback, NULL, rt->protocols, NULL) < 0) {
1817 rt->rtsp_hd_out = rt->rtsp_hd;
1821 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
1826 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1827 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1828 NULL, 0, NI_NUMERICHOST);
1831 /* request options supported by the server; this also detects server
1833 for (rt->server_type = RTSP_SERVER_RTP;;) {
1835 if (rt->server_type == RTSP_SERVER_REAL)
1838 * The following entries are required for proper
1839 * streaming from a Realmedia server. They are
1840 * interdependent in some way although we currently
1841 * don't quite understand how. Values were copied
1842 * from mplayer SVN r23589.
1843 * ClientChallenge is a 16-byte ID in hex
1844 * CompanyID is a 16-byte ID in base64
1846 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1847 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1848 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1849 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1851 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1852 if (reply->status_code != RTSP_STATUS_OK) {
1853 err = AVERROR_INVALIDDATA;
1857 /* detect server type if not standard-compliant RTP */
1858 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1859 rt->server_type = RTSP_SERVER_REAL;
1861 } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
1862 rt->server_type = RTSP_SERVER_WMS;
1863 } else if (rt->server_type == RTSP_SERVER_REAL)
1864 strcpy(real_challenge, reply->real_challenge);
1868 if (CONFIG_RTSP_DEMUXER && s->iformat)
1869 err = ff_rtsp_setup_input_streams(s, reply);
1870 else if (CONFIG_RTSP_MUXER)
1871 err = ff_rtsp_setup_output_streams(s, host);
1876 int lower_transport = ff_log2_tab[lower_transport_mask &
1877 ~(lower_transport_mask - 1)];
1879 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
1880 rt->server_type == RTSP_SERVER_REAL ?
1881 real_challenge : NULL);
1884 lower_transport_mask &= ~(1 << lower_transport);
1885 if (lower_transport_mask == 0 && err == 1) {
1886 err = AVERROR(EPROTONOSUPPORT);
1891 rt->lower_transport_mask = lower_transport_mask;
1892 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
1893 rt->state = RTSP_STATE_IDLE;
1894 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1897 ff_rtsp_close_streams(s);
1898 ff_rtsp_close_connections(s);
1899 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
1900 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1901 rt->session_id[0] = '\0';
1902 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1910 #endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1913 static int parse_rtsp_message(AVFormatContext *s)
1915 RTSPState *rt = s->priv_data;
1918 if (rt->rtsp_flags & RTSP_FLAG_LISTEN) {
1919 if (rt->state == RTSP_STATE_STREAMING) {
1920 if (!ff_rtsp_parse_streaming_commands(s))
1923 av_log(s, AV_LOG_WARNING,
1924 "Unable to answer to TEARDOWN\n");
1928 RTSPMessageHeader reply;
1929 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
1932 /* XXX: parse message */
1933 if (rt->state != RTSP_STATE_STREAMING)
1940 static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1941 uint8_t *buf, int buf_size, int64_t wait_end)
1943 RTSPState *rt = s->priv_data;
1944 RTSPStream *rtsp_st;
1945 int n, i, ret, timeout_cnt = 0;
1946 struct pollfd *p = rt->p;
1947 int *fds = NULL, fdsnum, fdsidx;
1950 p = rt->p = av_malloc_array(2 * (rt->nb_rtsp_streams + 1), sizeof(struct pollfd));
1952 return AVERROR(ENOMEM);
1955 p[rt->max_p].fd = ffurl_get_file_handle(rt->rtsp_hd);
1956 p[rt->max_p++].events = POLLIN;
1958 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1959 rtsp_st = rt->rtsp_streams[i];
1960 if (rtsp_st->rtp_handle) {
1961 if (ret = ffurl_get_multi_file_handle(rtsp_st->rtp_handle,
1963 av_log(s, AV_LOG_ERROR, "Unable to recover rtp ports\n");
1967 av_log(s, AV_LOG_ERROR,
1968 "Number of fds %d not supported\n", fdsnum);
1969 return AVERROR_INVALIDDATA;
1971 for (fdsidx = 0; fdsidx < fdsnum; fdsidx++) {
1972 p[rt->max_p].fd = fds[fdsidx];
1973 p[rt->max_p++].events = POLLIN;
1981 if (ff_check_interrupt(&s->interrupt_callback))
1982 return AVERROR_EXIT;
1983 if (wait_end && wait_end - av_gettime_relative() < 0)
1984 return AVERROR(EAGAIN);
1985 n = poll(p, rt->max_p, POLL_TIMEOUT_MS);
1987 int j = rt->rtsp_hd ? 1 : 0;
1989 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1990 rtsp_st = rt->rtsp_streams[i];
1991 if (rtsp_st->rtp_handle) {
1992 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
1993 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
1995 *prtsp_st = rtsp_st;
2002 #if CONFIG_RTSP_DEMUXER
2003 if (rt->rtsp_hd && p[0].revents & POLLIN) {
2004 if ((ret = parse_rtsp_message(s)) < 0) {
2009 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
2010 return AVERROR(ETIMEDOUT);
2011 } else if (n < 0 && errno != EINTR)
2012 return AVERROR(errno);
2016 static int pick_stream(AVFormatContext *s, RTSPStream **rtsp_st,
2017 const uint8_t *buf, int len)
2019 RTSPState *rt = s->priv_data;
2023 if (rt->nb_rtsp_streams == 1) {
2024 *rtsp_st = rt->rtsp_streams[0];
2027 if (len >= 8 && rt->transport == RTSP_TRANSPORT_RTP) {
2028 if (RTP_PT_IS_RTCP(rt->recvbuf[1])) {
2030 for (i = 0; i < rt->nb_rtsp_streams; i++) {
2031 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
2034 if (rtpctx->ssrc == AV_RB32(&buf[4])) {
2035 *rtsp_st = rt->rtsp_streams[i];
2042 av_log(s, AV_LOG_WARNING,
2043 "Unable to pick stream for packet - SSRC not known for "
2045 return AVERROR(EAGAIN);
2048 for (i = 0; i < rt->nb_rtsp_streams; i++) {
2049 if ((buf[1] & 0x7f) == rt->rtsp_streams[i]->sdp_payload_type) {
2050 *rtsp_st = rt->rtsp_streams[i];
2056 av_log(s, AV_LOG_WARNING, "Unable to pick stream for packet\n");
2057 return AVERROR(EAGAIN);
2060 static int read_packet(AVFormatContext *s,
2061 RTSPStream **rtsp_st, RTSPStream *first_queue_st,
2064 RTSPState *rt = s->priv_data;
2067 switch(rt->lower_transport) {
2069 #if CONFIG_RTSP_DEMUXER
2070 case RTSP_LOWER_TRANSPORT_TCP:
2071 len = ff_rtsp_tcp_read_packet(s, rtsp_st, rt->recvbuf, RECVBUF_SIZE);
2074 case RTSP_LOWER_TRANSPORT_UDP:
2075 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
2076 len = udp_read_packet(s, rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2077 if (len > 0 && (*rtsp_st)->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
2078 ff_rtp_check_and_send_back_rr((*rtsp_st)->transport_priv, (*rtsp_st)->rtp_handle, NULL, len);
2080 case RTSP_LOWER_TRANSPORT_CUSTOM:
2081 if (first_queue_st && rt->transport == RTSP_TRANSPORT_RTP &&
2082 wait_end && wait_end < av_gettime_relative())
2083 len = AVERROR(EAGAIN);
2085 len = avio_read_partial(s->pb, rt->recvbuf, RECVBUF_SIZE);
2086 len = pick_stream(s, rtsp_st, rt->recvbuf, len);
2087 if (len > 0 && (*rtsp_st)->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
2088 ff_rtp_check_and_send_back_rr((*rtsp_st)->transport_priv, NULL, s->pb, len);
2098 int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
2100 RTSPState *rt = s->priv_data;
2102 RTSPStream *rtsp_st, *first_queue_st = NULL;
2103 int64_t wait_end = 0;
2105 if (rt->nb_byes == rt->nb_rtsp_streams)
2108 /* get next frames from the same RTP packet */
2109 if (rt->cur_transport_priv) {
2110 if (rt->transport == RTSP_TRANSPORT_RDT) {
2111 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
2112 } else if (rt->transport == RTSP_TRANSPORT_RTP) {
2113 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
2114 } else if (CONFIG_RTPDEC && rt->ts) {
2115 ret = ff_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf + rt->recvbuf_pos, rt->recvbuf_len - rt->recvbuf_pos);
2117 rt->recvbuf_pos += ret;
2118 ret = rt->recvbuf_pos < rt->recvbuf_len;
2123 rt->cur_transport_priv = NULL;
2125 } else if (ret == 1) {
2128 rt->cur_transport_priv = NULL;
2132 if (rt->transport == RTSP_TRANSPORT_RTP) {
2134 int64_t first_queue_time = 0;
2135 for (i = 0; i < rt->nb_rtsp_streams; i++) {
2136 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
2140 queue_time = ff_rtp_queued_packet_time(rtpctx);
2141 if (queue_time && (queue_time - first_queue_time < 0 ||
2142 !first_queue_time)) {
2143 first_queue_time = queue_time;
2144 first_queue_st = rt->rtsp_streams[i];
2147 if (first_queue_time) {
2148 wait_end = first_queue_time + s->max_delay;
2151 first_queue_st = NULL;
2155 /* read next RTP packet */
2157 rt->recvbuf = av_malloc(RECVBUF_SIZE);
2159 return AVERROR(ENOMEM);
2162 len = read_packet(s, &rtsp_st, first_queue_st, wait_end);
2163 if (len == AVERROR(EAGAIN) && first_queue_st &&
2164 rt->transport == RTSP_TRANSPORT_RTP) {
2165 av_log(s, AV_LOG_WARNING,
2166 "max delay reached. need to consume packet\n");
2167 rtsp_st = first_queue_st;
2168 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
2174 if (rt->transport == RTSP_TRANSPORT_RDT) {
2175 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2176 } else if (rt->transport == RTSP_TRANSPORT_RTP) {
2177 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2178 if (rtsp_st->feedback) {
2179 AVIOContext *pb = NULL;
2180 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_CUSTOM)
2182 ff_rtp_send_rtcp_feedback(rtsp_st->transport_priv, rtsp_st->rtp_handle, pb);
2185 /* Either bad packet, or a RTCP packet. Check if the
2186 * first_rtcp_ntp_time field was initialized. */
2187 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
2188 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
2189 /* first_rtcp_ntp_time has been initialized for this stream,
2190 * copy the same value to all other uninitialized streams,
2191 * in order to map their timestamp origin to the same ntp time
2194 AVStream *st = NULL;
2195 if (rtsp_st->stream_index >= 0)
2196 st = s->streams[rtsp_st->stream_index];
2197 for (i = 0; i < rt->nb_rtsp_streams; i++) {
2198 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
2199 AVStream *st2 = NULL;
2200 if (rt->rtsp_streams[i]->stream_index >= 0)
2201 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
2202 if (rtpctx2 && st && st2 &&
2203 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2204 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
2205 rtpctx2->rtcp_ts_offset = av_rescale_q(
2206 rtpctx->rtcp_ts_offset, st->time_base,
2211 if (ret == -RTCP_BYE) {
2214 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
2215 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
2217 if (rt->nb_byes == rt->nb_rtsp_streams)
2221 } else if (CONFIG_RTPDEC && rt->ts) {
2222 ret = ff_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf, len);
2225 rt->recvbuf_len = len;
2226 rt->recvbuf_pos = ret;
2227 rt->cur_transport_priv = rt->ts;
2234 return AVERROR_INVALIDDATA;
2240 /* more packets may follow, so we save the RTP context */
2241 rt->cur_transport_priv = rtsp_st->transport_priv;
2245 #endif /* CONFIG_RTPDEC */
2247 #if CONFIG_SDP_DEMUXER
2248 static int sdp_probe(AVProbeData *p1)
2250 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
2252 /* we look for a line beginning "c=IN IP" */
2253 while (p < p_end && *p != '\0') {
2254 if (p + sizeof("c=IN IP") - 1 < p_end &&
2255 av_strstart(p, "c=IN IP", NULL))
2256 return AVPROBE_SCORE_EXTENSION;
2258 while (p < p_end - 1 && *p != '\n') p++;
2267 static void append_source_addrs(char *buf, int size, const char *name,
2268 int count, struct RTSPSource **addrs)
2273 av_strlcatf(buf, size, "&%s=%s", name, addrs[0]->addr);
2274 for (i = 1; i < count; i++)
2275 av_strlcatf(buf, size, ",%s", addrs[i]->addr);
2278 static int sdp_read_header(AVFormatContext *s)
2280 RTSPState *rt = s->priv_data;
2281 RTSPStream *rtsp_st;
2286 if (!ff_network_init())
2287 return AVERROR(EIO);
2289 if (!rt->protocols) {
2290 rt->protocols = ffurl_get_protocols(s->protocol_whitelist,
2291 s->protocol_blacklist);
2293 return AVERROR(ENOMEM);
2296 if (s->max_delay < 0) /* Not set by the caller */
2297 s->max_delay = DEFAULT_REORDERING_DELAY;
2298 if (rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)
2299 rt->lower_transport = RTSP_LOWER_TRANSPORT_CUSTOM;
2301 /* read the whole sdp file */
2302 /* XXX: better loading */
2303 content = av_malloc(SDP_MAX_SIZE);
2305 return AVERROR(ENOMEM);
2306 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
2309 return AVERROR_INVALIDDATA;
2311 content[size] ='\0';
2313 err = ff_sdp_parse(s, content);
2317 /* open each RTP stream */
2318 for (i = 0; i < rt->nb_rtsp_streams; i++) {
2320 rtsp_st = rt->rtsp_streams[i];
2322 if (!(rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)) {
2323 AVDictionary *opts = map_to_opts(rt);
2325 err = getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip,
2326 sizeof(rtsp_st->sdp_ip),
2327 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
2329 av_log(s, AV_LOG_ERROR, "getnameinfo: %s\n", gai_strerror(err));
2331 av_dict_free(&opts);
2334 ff_url_join(url, sizeof(url), "rtp", NULL,
2335 namebuf, rtsp_st->sdp_port,
2336 "?localport=%d&ttl=%d&connect=%d&write_to_source=%d",
2337 rtsp_st->sdp_port, rtsp_st->sdp_ttl,
2338 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0,
2339 rt->rtsp_flags & RTSP_FLAG_RTCP_TO_SOURCE ? 1 : 0);
2341 append_source_addrs(url, sizeof(url), "sources",
2342 rtsp_st->nb_include_source_addrs,
2343 rtsp_st->include_source_addrs);
2344 append_source_addrs(url, sizeof(url), "block",
2345 rtsp_st->nb_exclude_source_addrs,
2346 rtsp_st->exclude_source_addrs);
2347 err = ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
2348 &s->interrupt_callback, &opts, rt->protocols, NULL);
2350 av_dict_free(&opts);
2353 err = AVERROR_INVALIDDATA;
2357 if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
2362 ff_rtsp_close_streams(s);
2367 static int sdp_read_close(AVFormatContext *s)
2369 ff_rtsp_close_streams(s);
2374 static const AVClass sdp_demuxer_class = {
2375 .class_name = "SDP demuxer",
2376 .item_name = av_default_item_name,
2377 .option = sdp_options,
2378 .version = LIBAVUTIL_VERSION_INT,
2381 AVInputFormat ff_sdp_demuxer = {
2383 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
2384 .priv_data_size = sizeof(RTSPState),
2385 .read_probe = sdp_probe,
2386 .read_header = sdp_read_header,
2387 .read_packet = ff_rtsp_fetch_packet,
2388 .read_close = sdp_read_close,
2389 .priv_class = &sdp_demuxer_class,
2391 #endif /* CONFIG_SDP_DEMUXER */
2393 #if CONFIG_RTP_DEMUXER
2394 static int rtp_probe(AVProbeData *p)
2396 if (av_strstart(p->filename, "rtp:", NULL))
2397 return AVPROBE_SCORE_MAX;
2401 static int rtp_read_header(AVFormatContext *s)
2403 uint8_t recvbuf[RTP_MAX_PACKET_LENGTH];
2404 char host[500], sdp[500];
2406 URLContext* in = NULL;
2408 AVCodecParameters *par = NULL;
2409 struct sockaddr_storage addr;
2411 socklen_t addrlen = sizeof(addr);
2412 RTSPState *rt = s->priv_data;
2414 if (!ff_network_init())
2415 return AVERROR(EIO);
2417 if (!rt->protocols) {
2418 rt->protocols = ffurl_get_protocols(s->protocol_whitelist,
2419 s->protocol_blacklist);
2421 return AVERROR(ENOMEM);
2424 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ,
2425 &s->interrupt_callback, NULL, rt->protocols, NULL);
2430 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
2431 if (ret == AVERROR(EAGAIN))
2436 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
2440 if ((recvbuf[0] & 0xc0) != 0x80) {
2441 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
2446 if (RTP_PT_IS_RTCP(recvbuf[1]))
2449 payload_type = recvbuf[1] & 0x7f;
2452 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
2456 par = avcodec_parameters_alloc();
2458 ret = AVERROR(ENOMEM);
2462 if (ff_rtp_get_codec_info(par, payload_type)) {
2463 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
2464 "without an SDP file describing it\n",
2468 if (par->codec_type != AVMEDIA_TYPE_DATA) {
2469 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
2470 "properly you need an SDP file "
2474 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
2475 NULL, 0, s->filename);
2477 snprintf(sdp, sizeof(sdp),
2478 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
2479 addr.ss_family == AF_INET ? 4 : 6, host,
2480 par->codec_type == AVMEDIA_TYPE_DATA ? "application" :
2481 par->codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
2482 port, payload_type);
2483 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
2484 avcodec_parameters_free(&par);
2486 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
2489 /* sdp_read_header initializes this again */
2492 rt->media_type_mask = (1 << (AVMEDIA_TYPE_DATA+1)) - 1;
2494 ret = sdp_read_header(s);
2499 avcodec_parameters_free(&par);
2506 static const AVClass rtp_demuxer_class = {
2507 .class_name = "RTP demuxer",
2508 .item_name = av_default_item_name,
2509 .option = rtp_options,
2510 .version = LIBAVUTIL_VERSION_INT,
2513 AVInputFormat ff_rtp_demuxer = {
2515 .long_name = NULL_IF_CONFIG_SMALL("RTP input"),
2516 .priv_data_size = sizeof(RTSPState),
2517 .read_probe = rtp_probe,
2518 .read_header = rtp_read_header,
2519 .read_packet = ff_rtsp_fetch_packet,
2520 .read_close = sdp_read_close,
2521 .flags = AVFMT_NOFILE,
2522 .priv_class = &rtp_demuxer_class,
2524 #endif /* CONFIG_RTP_DEMUXER */