FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
rtsp.c
Go to the documentation of this file.
1 /*
2  * RTSP/SDP client
3  * Copyright (c) 2002 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
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.
11  *
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.
16  *
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
20  */
21 
22 #include "libavutil/avassert.h"
23 #include "libavutil/base64.h"
24 #include "libavutil/avstring.h"
25 #include "libavutil/intreadwrite.h"
26 #include "libavutil/mathematics.h"
27 #include "libavutil/parseutils.h"
28 #include "libavutil/random_seed.h"
29 #include "libavutil/dict.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/time.h"
32 #include "avformat.h"
33 #include "avio_internal.h"
34 
35 #if HAVE_POLL_H
36 #include <poll.h>
37 #endif
38 #include "internal.h"
39 #include "network.h"
40 #include "os_support.h"
41 #include "http.h"
42 #include "rtsp.h"
43 
44 #include "rtpdec.h"
45 #include "rtpproto.h"
46 #include "rdt.h"
47 #include "rtpdec_formats.h"
48 #include "rtpenc_chain.h"
49 #include "url.h"
50 #include "rtpenc.h"
51 #include "mpegts.h"
52 
53 /* Timeout values for socket poll, in ms,
54  * and read_packet(), in seconds */
55 #define POLL_TIMEOUT_MS 100
56 #define READ_PACKET_TIMEOUT_S 10
57 #define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS
58 #define SDP_MAX_SIZE 16384
59 #define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
60 #define DEFAULT_REORDERING_DELAY 100000
61 
62 #define OFFSET(x) offsetof(RTSPState, x)
63 #define DEC AV_OPT_FLAG_DECODING_PARAM
64 #define ENC AV_OPT_FLAG_ENCODING_PARAM
65 
66 #define RTSP_FLAG_OPTS(name, longname) \
67  { name, longname, OFFSET(rtsp_flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, DEC, "rtsp_flags" }, \
68  { "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 
70 #define RTSP_MEDIATYPE_OPTS(name, longname) \
71  { name, longname, OFFSET(media_type_mask), AV_OPT_TYPE_FLAGS, { .i64 = (1 << (AVMEDIA_TYPE_SUBTITLE+1)) - 1 }, INT_MIN, INT_MAX, DEC, "allowed_media_types" }, \
72  { "video", "Video", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_VIDEO}, 0, 0, DEC, "allowed_media_types" }, \
73  { "audio", "Audio", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_AUDIO}, 0, 0, DEC, "allowed_media_types" }, \
74  { "data", "Data", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_DATA}, 0, 0, DEC, "allowed_media_types" }, \
75  { "subtitle", "Subtitle", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_SUBTITLE}, 0, 0, DEC, "allowed_media_types" }
76 
77 #define COMMON_OPTS() \
78  { "reorder_queue_size", "set number of packets to buffer for handling of reordered packets", OFFSET(reordering_queue_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, DEC }, \
79  { "buffer_size", "Underlying protocol send/receive buffer size", OFFSET(buffer_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, DEC|ENC } \
80 
81 
83  { "initial_pause", "do not start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, DEC },
84  FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags),
85  { "rtsp_transport", "set RTSP transport protocols", OFFSET(lower_transport_mask), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, DEC|ENC, "rtsp_transport" }, \
86  { "udp", "UDP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
87  { "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
88  { "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, "rtsp_transport" },
89  { "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {.i64 = (1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, "rtsp_transport" },
90  RTSP_FLAG_OPTS("rtsp_flags", "set RTSP flags"),
91  { "listen", "wait for incoming connections", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_LISTEN}, 0, 0, DEC, "rtsp_flags" },
92  { "prefer_tcp", "try RTP via TCP first, if available", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_PREFER_TCP}, 0, 0, DEC|ENC, "rtsp_flags" },
93  RTSP_MEDIATYPE_OPTS("allowed_media_types", "set media types to accept from the server"),
94  { "min_port", "set minimum local UDP port", OFFSET(rtp_port_min), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MIN}, 0, 65535, DEC|ENC },
95  { "max_port", "set maximum local UDP port", OFFSET(rtp_port_max), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MAX}, 0, 65535, DEC|ENC },
96  { "timeout", "set maximum timeout (in seconds) to wait for incoming connections (-1 is infinite, imply flag listen)", OFFSET(initial_timeout), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, DEC },
97  { "stimeout", "set timeout (in microseconds) of socket TCP I/O operations", OFFSET(stimeout), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, DEC },
98  COMMON_OPTS(),
99  { "user-agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = LIBAVFORMAT_IDENT}, 0, 0, DEC },
100  { NULL },
101 };
102 
103 static const AVOption sdp_options[] = {
104  RTSP_FLAG_OPTS("sdp_flags", "SDP flags"),
105  { "custom_io", "use custom I/O", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_CUSTOM_IO}, 0, 0, DEC, "rtsp_flags" },
106  { "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" },
107  RTSP_MEDIATYPE_OPTS("allowed_media_types", "set media types to accept from the server"),
108  COMMON_OPTS(),
109  { NULL },
110 };
111 
112 static const AVOption rtp_options[] = {
113  RTSP_FLAG_OPTS("rtp_flags", "set RTP flags"),
114  COMMON_OPTS(),
115  { NULL },
116 };
117 
118 
120 {
122  char buf[256];
123 
124  snprintf(buf, sizeof(buf), "%d", rt->buffer_size);
125  av_dict_set(&opts, "buffer_size", buf, 0);
126 
127  return opts;
128 }
129 
130 static void get_word_until_chars(char *buf, int buf_size,
131  const char *sep, const char **pp)
132 {
133  const char *p;
134  char *q;
135 
136  p = *pp;
137  p += strspn(p, SPACE_CHARS);
138  q = buf;
139  while (!strchr(sep, *p) && *p != '\0') {
140  if ((q - buf) < buf_size - 1)
141  *q++ = *p;
142  p++;
143  }
144  if (buf_size > 0)
145  *q = '\0';
146  *pp = p;
147 }
148 
149 static void get_word_sep(char *buf, int buf_size, const char *sep,
150  const char **pp)
151 {
152  if (**pp == '/') (*pp)++;
153  get_word_until_chars(buf, buf_size, sep, pp);
154 }
155 
156 static void get_word(char *buf, int buf_size, const char **pp)
157 {
158  get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
159 }
160 
161 /** Parse a string p in the form of Range:npt=xx-xx, and determine the start
162  * and end time.
163  * Used for seeking in the rtp stream.
164  */
165 static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
166 {
167  char buf[256];
168 
169  p += strspn(p, SPACE_CHARS);
170  if (!av_stristart(p, "npt=", &p))
171  return;
172 
173  *start = AV_NOPTS_VALUE;
174  *end = AV_NOPTS_VALUE;
175 
176  get_word_sep(buf, sizeof(buf), "-", &p);
177  if (av_parse_time(start, buf, 1) < 0)
178  return;
179  if (*p == '-') {
180  p++;
181  get_word_sep(buf, sizeof(buf), "-", &p);
182  if (av_parse_time(end, buf, 1) < 0)
183  av_log(NULL, AV_LOG_DEBUG, "Failed to parse interval end specification '%s'\n", buf);
184  }
185 }
186 
188  const char *buf, struct sockaddr_storage *sock)
189 {
190  struct addrinfo hints = { 0 }, *ai = NULL;
191  int ret;
192 
193  hints.ai_flags = AI_NUMERICHOST;
194  if ((ret = getaddrinfo(buf, NULL, &hints, &ai))) {
195  av_log(s, AV_LOG_ERROR, "getaddrinfo(%s): %s\n",
196  buf,
197  gai_strerror(ret));
198  return -1;
199  }
200  memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
201  freeaddrinfo(ai);
202  return 0;
203 }
204 
205 #if CONFIG_RTPDEC
206 static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
207  RTSPStream *rtsp_st, AVStream *st)
208 {
209  AVCodecParameters *par = st ? st->codecpar : NULL;
210  if (!handler)
211  return;
212  if (par)
213  par->codec_id = handler->codec_id;
214  rtsp_st->dynamic_handler = handler;
215  if (st)
216  st->need_parsing = handler->need_parsing;
217  if (handler->priv_data_size) {
219  if (!rtsp_st->dynamic_protocol_context)
220  rtsp_st->dynamic_handler = NULL;
221  }
222 }
223 
224 static void finalize_rtp_handler_init(AVFormatContext *s, RTSPStream *rtsp_st,
225  AVStream *st)
226 {
227  if (rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->init) {
228  int ret = rtsp_st->dynamic_handler->init(s, st ? st->index : -1,
229  rtsp_st->dynamic_protocol_context);
230  if (ret < 0) {
231  if (rtsp_st->dynamic_protocol_context) {
232  if (rtsp_st->dynamic_handler->close)
233  rtsp_st->dynamic_handler->close(
234  rtsp_st->dynamic_protocol_context);
236  }
237  rtsp_st->dynamic_protocol_context = NULL;
238  rtsp_st->dynamic_handler = NULL;
239  }
240  }
241 }
242 
243 /* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
244 static int sdp_parse_rtpmap(AVFormatContext *s,
245  AVStream *st, RTSPStream *rtsp_st,
246  int payload_type, const char *p)
247 {
248  AVCodecParameters *par = st->codecpar;
249  char buf[256];
250  int i;
251  AVCodec *c;
252  const char *c_name;
253 
254  /* See if we can handle this kind of payload.
255  * The space should normally not be there but some Real streams or
256  * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
257  * have a trailing space. */
258  get_word_sep(buf, sizeof(buf), "/ ", &p);
259  if (payload_type < RTP_PT_PRIVATE) {
260  /* We are in a standard case
261  * (from http://www.iana.org/assignments/rtp-parameters). */
262  par->codec_id = ff_rtp_codec_id(buf, par->codec_type);
263  }
264 
265  if (par->codec_id == AV_CODEC_ID_NONE) {
266  RTPDynamicProtocolHandler *handler =
268  init_rtp_handler(handler, rtsp_st, st);
269  /* If no dynamic handler was found, check with the list of standard
270  * allocated types, if such a stream for some reason happens to
271  * use a private payload type. This isn't handled in rtpdec.c, since
272  * the format name from the rtpmap line never is passed into rtpdec. */
273  if (!rtsp_st->dynamic_handler)
274  par->codec_id = ff_rtp_codec_id(buf, par->codec_type);
275  }
276 
277  c = avcodec_find_decoder(par->codec_id);
278  if (c && c->name)
279  c_name = c->name;
280  else
281  c_name = "(null)";
282 
283  get_word_sep(buf, sizeof(buf), "/", &p);
284  i = atoi(buf);
285  switch (par->codec_type) {
286  case AVMEDIA_TYPE_AUDIO:
287  av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
290  if (i > 0) {
291  par->sample_rate = i;
292  avpriv_set_pts_info(st, 32, 1, par->sample_rate);
293  get_word_sep(buf, sizeof(buf), "/", &p);
294  i = atoi(buf);
295  if (i > 0)
296  par->channels = i;
297  }
298  av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
299  par->sample_rate);
300  av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
301  par->channels);
302  break;
303  case AVMEDIA_TYPE_VIDEO:
304  av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
305  if (i > 0)
306  avpriv_set_pts_info(st, 32, 1, i);
307  break;
308  default:
309  break;
310  }
311  finalize_rtp_handler_init(s, rtsp_st, st);
312  return 0;
313 }
314 
315 /* parse the attribute line from the fmtp a line of an sdp response. This
316  * is broken out as a function because it is used in rtp_h264.c, which is
317  * forthcoming. */
318 int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
319  char *value, int value_size)
320 {
321  *p += strspn(*p, SPACE_CHARS);
322  if (**p) {
323  get_word_sep(attr, attr_size, "=", p);
324  if (**p == '=')
325  (*p)++;
326  get_word_sep(value, value_size, ";", p);
327  if (**p == ';')
328  (*p)++;
329  return 1;
330  }
331  return 0;
332 }
333 
334 typedef struct SDPParseState {
335  /* SDP only */
336  struct sockaddr_storage default_ip;
337  int default_ttl;
338  int skip_media; ///< set if an unknown m= line occurs
339  int nb_default_include_source_addrs; /**< Number of source-specific multicast include source IP address (from SDP content) */
340  struct RTSPSource **default_include_source_addrs; /**< Source-specific multicast include source IP address (from SDP content) */
341  int nb_default_exclude_source_addrs; /**< Number of source-specific multicast exclude source IP address (from SDP content) */
342  struct RTSPSource **default_exclude_source_addrs; /**< Source-specific multicast exclude source IP address (from SDP content) */
343  int seen_rtpmap;
344  int seen_fmtp;
345  char delayed_fmtp[2048];
346 } SDPParseState;
347 
348 static void copy_default_source_addrs(struct RTSPSource **addrs, int count,
349  struct RTSPSource ***dest, int *dest_count)
350 {
351  RTSPSource *rtsp_src, *rtsp_src2;
352  int i;
353  for (i = 0; i < count; i++) {
354  rtsp_src = addrs[i];
355  rtsp_src2 = av_malloc(sizeof(*rtsp_src2));
356  if (!rtsp_src2)
357  continue;
358  memcpy(rtsp_src2, rtsp_src, sizeof(*rtsp_src));
359  dynarray_add(dest, dest_count, rtsp_src2);
360  }
361 }
362 
363 static void parse_fmtp(AVFormatContext *s, RTSPState *rt,
364  int payload_type, const char *line)
365 {
366  int i;
367 
368  for (i = 0; i < rt->nb_rtsp_streams; i++) {
369  RTSPStream *rtsp_st = rt->rtsp_streams[i];
370  if (rtsp_st->sdp_payload_type == payload_type &&
371  rtsp_st->dynamic_handler &&
372  rtsp_st->dynamic_handler->parse_sdp_a_line) {
373  rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
374  rtsp_st->dynamic_protocol_context, line);
375  }
376  }
377 }
378 
379 static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
380  int letter, const char *buf)
381 {
382  RTSPState *rt = s->priv_data;
383  char buf1[64], st_type[64];
384  const char *p;
385  enum AVMediaType codec_type;
386  int payload_type;
387  AVStream *st;
388  RTSPStream *rtsp_st;
389  RTSPSource *rtsp_src;
390  struct sockaddr_storage sdp_ip;
391  int ttl;
392 
393  av_log(s, AV_LOG_TRACE, "sdp: %c='%s'\n", letter, buf);
394 
395  p = buf;
396  if (s1->skip_media && letter != 'm')
397  return;
398  switch (letter) {
399  case 'c':
400  get_word(buf1, sizeof(buf1), &p);
401  if (strcmp(buf1, "IN") != 0)
402  return;
403  get_word(buf1, sizeof(buf1), &p);
404  if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
405  return;
406  get_word_sep(buf1, sizeof(buf1), "/", &p);
407  if (get_sockaddr(s, buf1, &sdp_ip))
408  return;
409  ttl = 16;
410  if (*p == '/') {
411  p++;
412  get_word_sep(buf1, sizeof(buf1), "/", &p);
413  ttl = atoi(buf1);
414  }
415  if (s->nb_streams == 0) {
416  s1->default_ip = sdp_ip;
417  s1->default_ttl = ttl;
418  } else {
419  rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
420  rtsp_st->sdp_ip = sdp_ip;
421  rtsp_st->sdp_ttl = ttl;
422  }
423  break;
424  case 's':
425  av_dict_set(&s->metadata, "title", p, 0);
426  break;
427  case 'i':
428  if (s->nb_streams == 0) {
429  av_dict_set(&s->metadata, "comment", p, 0);
430  break;
431  }
432  break;
433  case 'm':
434  /* new stream */
435  s1->skip_media = 0;
436  s1->seen_fmtp = 0;
437  s1->seen_rtpmap = 0;
438  codec_type = AVMEDIA_TYPE_UNKNOWN;
439  get_word(st_type, sizeof(st_type), &p);
440  if (!strcmp(st_type, "audio")) {
441  codec_type = AVMEDIA_TYPE_AUDIO;
442  } else if (!strcmp(st_type, "video")) {
443  codec_type = AVMEDIA_TYPE_VIDEO;
444  } else if (!strcmp(st_type, "application")) {
445  codec_type = AVMEDIA_TYPE_DATA;
446  } else if (!strcmp(st_type, "text")) {
447  codec_type = AVMEDIA_TYPE_SUBTITLE;
448  }
449  if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) {
450  s1->skip_media = 1;
451  return;
452  }
453  rtsp_st = av_mallocz(sizeof(RTSPStream));
454  if (!rtsp_st)
455  return;
456  rtsp_st->stream_index = -1;
457  dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
458 
459  rtsp_st->sdp_ip = s1->default_ip;
460  rtsp_st->sdp_ttl = s1->default_ttl;
461 
462  copy_default_source_addrs(s1->default_include_source_addrs,
463  s1->nb_default_include_source_addrs,
464  &rtsp_st->include_source_addrs,
465  &rtsp_st->nb_include_source_addrs);
466  copy_default_source_addrs(s1->default_exclude_source_addrs,
467  s1->nb_default_exclude_source_addrs,
468  &rtsp_st->exclude_source_addrs,
469  &rtsp_st->nb_exclude_source_addrs);
470 
471  get_word(buf1, sizeof(buf1), &p); /* port */
472  rtsp_st->sdp_port = atoi(buf1);
473 
474  get_word(buf1, sizeof(buf1), &p); /* protocol */
475  if (!strcmp(buf1, "udp"))
477  else if (strstr(buf1, "/AVPF") || strstr(buf1, "/SAVPF"))
478  rtsp_st->feedback = 1;
479 
480  /* XXX: handle list of formats */
481  get_word(buf1, sizeof(buf1), &p); /* format list */
482  rtsp_st->sdp_payload_type = atoi(buf1);
483 
484  if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
485  /* no corresponding stream */
486  if (rt->transport == RTSP_TRANSPORT_RAW) {
487  if (CONFIG_RTPDEC && !rt->ts)
488  rt->ts = avpriv_mpegts_parse_open(s);
489  } else {
491  handler = ff_rtp_handler_find_by_id(
493  init_rtp_handler(handler, rtsp_st, NULL);
494  finalize_rtp_handler_init(s, rtsp_st, NULL);
495  }
496  } else if (rt->server_type == RTSP_SERVER_WMS &&
497  codec_type == AVMEDIA_TYPE_DATA) {
498  /* RTX stream, a stream that carries all the other actual
499  * audio/video streams. Don't expose this to the callers. */
500  } else {
501  st = avformat_new_stream(s, NULL);
502  if (!st)
503  return;
504  st->id = rt->nb_rtsp_streams - 1;
505  rtsp_st->stream_index = st->index;
507  if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
509  /* if standard payload type, we can find the codec right now */
511  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
512  st->codecpar->sample_rate > 0)
513  avpriv_set_pts_info(st, 32, 1, st->codecpar->sample_rate);
514  /* Even static payload types may need a custom depacketizer */
515  handler = ff_rtp_handler_find_by_id(
516  rtsp_st->sdp_payload_type, st->codecpar->codec_type);
517  init_rtp_handler(handler, rtsp_st, st);
518  finalize_rtp_handler_init(s, rtsp_st, st);
519  }
520  if (rt->default_lang[0])
521  av_dict_set(&st->metadata, "language", rt->default_lang, 0);
522  }
523  /* put a default control url */
524  av_strlcpy(rtsp_st->control_url, rt->control_uri,
525  sizeof(rtsp_st->control_url));
526  break;
527  case 'a':
528  if (av_strstart(p, "control:", &p)) {
529  if (s->nb_streams == 0) {
530  if (!strncmp(p, "rtsp://", 7))
531  av_strlcpy(rt->control_uri, p,
532  sizeof(rt->control_uri));
533  } else {
534  char proto[32];
535  /* get the control url */
536  rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
537 
538  /* XXX: may need to add full url resolution */
539  av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
540  NULL, NULL, 0, p);
541  if (proto[0] == '\0') {
542  /* relative control URL */
543  if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
544  av_strlcat(rtsp_st->control_url, "/",
545  sizeof(rtsp_st->control_url));
546  av_strlcat(rtsp_st->control_url, p,
547  sizeof(rtsp_st->control_url));
548  } else
549  av_strlcpy(rtsp_st->control_url, p,
550  sizeof(rtsp_st->control_url));
551  }
552  } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
553  /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
554  get_word(buf1, sizeof(buf1), &p);
555  payload_type = atoi(buf1);
556  rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
557  if (rtsp_st->stream_index >= 0) {
558  st = s->streams[rtsp_st->stream_index];
559  sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
560  }
561  s1->seen_rtpmap = 1;
562  if (s1->seen_fmtp) {
563  parse_fmtp(s, rt, payload_type, s1->delayed_fmtp);
564  }
565  } else if (av_strstart(p, "fmtp:", &p) ||
566  av_strstart(p, "framesize:", &p)) {
567  // let dynamic protocol handlers have a stab at the line.
568  get_word(buf1, sizeof(buf1), &p);
569  payload_type = atoi(buf1);
570  if (s1->seen_rtpmap) {
571  parse_fmtp(s, rt, payload_type, buf);
572  } else {
573  s1->seen_fmtp = 1;
574  av_strlcpy(s1->delayed_fmtp, buf, sizeof(s1->delayed_fmtp));
575  }
576  } else if (av_strstart(p, "range:", &p)) {
577  int64_t start, end;
578 
579  // this is so that seeking on a streamed file can work.
580  rtsp_parse_range_npt(p, &start, &end);
581  s->start_time = start;
582  /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
583  s->duration = (end == AV_NOPTS_VALUE) ?
584  AV_NOPTS_VALUE : end - start;
585  } else if (av_strstart(p, "lang:", &p)) {
586  if (s->nb_streams > 0) {
587  get_word(buf1, sizeof(buf1), &p);
588  rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
589  if (rtsp_st->stream_index >= 0) {
590  st = s->streams[rtsp_st->stream_index];
591  av_dict_set(&st->metadata, "language", buf1, 0);
592  }
593  } else
594  get_word(rt->default_lang, sizeof(rt->default_lang), &p);
595  } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
596  if (atoi(p) == 1)
598  } else if (av_strstart(p, "SampleRate:integer;", &p) &&
599  s->nb_streams > 0) {
600  st = s->streams[s->nb_streams - 1];
601  st->codecpar->sample_rate = atoi(p);
602  } else if (av_strstart(p, "crypto:", &p) && s->nb_streams > 0) {
603  // RFC 4568
604  rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
605  get_word(buf1, sizeof(buf1), &p); // ignore tag
606  get_word(rtsp_st->crypto_suite, sizeof(rtsp_st->crypto_suite), &p);
607  p += strspn(p, SPACE_CHARS);
608  if (av_strstart(p, "inline:", &p))
609  get_word(rtsp_st->crypto_params, sizeof(rtsp_st->crypto_params), &p);
610  } else if (av_strstart(p, "source-filter:", &p)) {
611  int exclude = 0;
612  get_word(buf1, sizeof(buf1), &p);
613  if (strcmp(buf1, "incl") && strcmp(buf1, "excl"))
614  return;
615  exclude = !strcmp(buf1, "excl");
616 
617  get_word(buf1, sizeof(buf1), &p);
618  if (strcmp(buf1, "IN") != 0)
619  return;
620  get_word(buf1, sizeof(buf1), &p);
621  if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6") && strcmp(buf1, "*"))
622  return;
623  // not checking that the destination address actually matches or is wildcard
624  get_word(buf1, sizeof(buf1), &p);
625 
626  while (*p != '\0') {
627  rtsp_src = av_mallocz(sizeof(*rtsp_src));
628  if (!rtsp_src)
629  return;
630  get_word(rtsp_src->addr, sizeof(rtsp_src->addr), &p);
631  if (exclude) {
632  if (s->nb_streams == 0) {
633  dynarray_add(&s1->default_exclude_source_addrs, &s1->nb_default_exclude_source_addrs, rtsp_src);
634  } else {
635  rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
636  dynarray_add(&rtsp_st->exclude_source_addrs, &rtsp_st->nb_exclude_source_addrs, rtsp_src);
637  }
638  } else {
639  if (s->nb_streams == 0) {
640  dynarray_add(&s1->default_include_source_addrs, &s1->nb_default_include_source_addrs, rtsp_src);
641  } else {
642  rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
643  dynarray_add(&rtsp_st->include_source_addrs, &rtsp_st->nb_include_source_addrs, rtsp_src);
644  }
645  }
646  }
647  } else {
648  if (rt->server_type == RTSP_SERVER_WMS)
650  if (s->nb_streams > 0) {
651  rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
652 
653  if (rt->server_type == RTSP_SERVER_REAL)
654  ff_real_parse_sdp_a_line(s, rtsp_st->stream_index, p);
655 
656  if (rtsp_st->dynamic_handler &&
658  rtsp_st->dynamic_handler->parse_sdp_a_line(s,
659  rtsp_st->stream_index,
660  rtsp_st->dynamic_protocol_context, buf);
661  }
662  }
663  break;
664  }
665 }
666 
667 int ff_sdp_parse(AVFormatContext *s, const char *content)
668 {
669  RTSPState *rt = s->priv_data;
670  const char *p;
671  int letter, i;
672  /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
673  * contain long SDP lines containing complete ASF Headers (several
674  * kB) or arrays of MDPR (RM stream descriptor) headers plus
675  * "rulebooks" describing their properties. Therefore, the SDP line
676  * buffer is large.
677  *
678  * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
679  * in rtpdec_xiph.c. */
680  char buf[16384], *q;
681  SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state;
682 
683  p = content;
684  for (;;) {
685  p += strspn(p, SPACE_CHARS);
686  letter = *p;
687  if (letter == '\0')
688  break;
689  p++;
690  if (*p != '=')
691  goto next_line;
692  p++;
693  /* get the content */
694  q = buf;
695  while (*p != '\n' && *p != '\r' && *p != '\0') {
696  if ((q - buf) < sizeof(buf) - 1)
697  *q++ = *p;
698  p++;
699  }
700  *q = '\0';
701  sdp_parse_line(s, s1, letter, buf);
702  next_line:
703  while (*p != '\n' && *p != '\0')
704  p++;
705  if (*p == '\n')
706  p++;
707  }
708 
709  for (i = 0; i < s1->nb_default_include_source_addrs; i++)
710  av_freep(&s1->default_include_source_addrs[i]);
711  av_freep(&s1->default_include_source_addrs);
712  for (i = 0; i < s1->nb_default_exclude_source_addrs; i++)
713  av_freep(&s1->default_exclude_source_addrs[i]);
714  av_freep(&s1->default_exclude_source_addrs);
715 
716  rt->p = av_malloc_array(rt->nb_rtsp_streams + 1, sizeof(struct pollfd) * 2);
717  if (!rt->p) return AVERROR(ENOMEM);
718  return 0;
719 }
720 #endif /* CONFIG_RTPDEC */
721 
722 void ff_rtsp_undo_setup(AVFormatContext *s, int send_packets)
723 {
724  RTSPState *rt = s->priv_data;
725  int i;
726 
727  for (i = 0; i < rt->nb_rtsp_streams; i++) {
728  RTSPStream *rtsp_st = rt->rtsp_streams[i];
729  if (!rtsp_st)
730  continue;
731  if (rtsp_st->transport_priv) {
732  if (s->oformat) {
733  AVFormatContext *rtpctx = rtsp_st->transport_priv;
734  av_write_trailer(rtpctx);
736  if (CONFIG_RTSP_MUXER && rtpctx->pb && send_packets)
737  ff_rtsp_tcp_write_packet(s, rtsp_st);
738  ffio_free_dyn_buf(&rtpctx->pb);
739  } else {
740  avio_closep(&rtpctx->pb);
741  }
742  avformat_free_context(rtpctx);
743  } else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RDT)
745  else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RTP)
747  }
748  rtsp_st->transport_priv = NULL;
749  if (rtsp_st->rtp_handle)
750  ffurl_close(rtsp_st->rtp_handle);
751  rtsp_st->rtp_handle = NULL;
752  }
753 }
754 
755 /* close and free RTSP streams */
757 {
758  RTSPState *rt = s->priv_data;
759  int i, j;
760  RTSPStream *rtsp_st;
761 
762  ff_rtsp_undo_setup(s, 0);
763  for (i = 0; i < rt->nb_rtsp_streams; i++) {
764  rtsp_st = rt->rtsp_streams[i];
765  if (rtsp_st) {
766  if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context) {
767  if (rtsp_st->dynamic_handler->close)
768  rtsp_st->dynamic_handler->close(
769  rtsp_st->dynamic_protocol_context);
771  }
772  for (j = 0; j < rtsp_st->nb_include_source_addrs; j++)
773  av_freep(&rtsp_st->include_source_addrs[j]);
774  av_freep(&rtsp_st->include_source_addrs);
775  for (j = 0; j < rtsp_st->nb_exclude_source_addrs; j++)
776  av_freep(&rtsp_st->exclude_source_addrs[j]);
777  av_freep(&rtsp_st->exclude_source_addrs);
778 
779  av_freep(&rtsp_st);
780  }
781  }
782  av_freep(&rt->rtsp_streams);
783  if (rt->asf_ctx) {
785  }
786  if (CONFIG_RTPDEC && rt->ts)
788  av_freep(&rt->p);
789  av_freep(&rt->recvbuf);
790 }
791 
793 {
794  RTSPState *rt = s->priv_data;
795  AVStream *st = NULL;
796  int reordering_queue_size = rt->reordering_queue_size;
797  if (reordering_queue_size < 0) {
799  reordering_queue_size = 0;
800  else
801  reordering_queue_size = RTP_REORDER_QUEUE_DEFAULT_SIZE;
802  }
803 
804  /* open the RTP context */
805  if (rtsp_st->stream_index >= 0)
806  st = s->streams[rtsp_st->stream_index];
807  if (!st)
809 
810  if (CONFIG_RTSP_MUXER && s->oformat && st) {
811  int ret = ff_rtp_chain_mux_open((AVFormatContext **)&rtsp_st->transport_priv,
812  s, st, rtsp_st->rtp_handle,
814  rtsp_st->stream_index);
815  /* Ownership of rtp_handle is passed to the rtp mux context */
816  rtsp_st->rtp_handle = NULL;
817  if (ret < 0)
818  return ret;
819  st->time_base = ((AVFormatContext*)rtsp_st->transport_priv)->streams[0]->time_base;
820  } else if (rt->transport == RTSP_TRANSPORT_RAW) {
821  return 0; // Don't need to open any parser here
822  } else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RDT && st)
823  rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
824  rtsp_st->dynamic_protocol_context,
825  rtsp_st->dynamic_handler);
826  else if (CONFIG_RTPDEC)
827  rtsp_st->transport_priv = ff_rtp_parse_open(s, st,
828  rtsp_st->sdp_payload_type,
829  reordering_queue_size);
830 
831  if (!rtsp_st->transport_priv) {
832  return AVERROR(ENOMEM);
833  } else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RTP) {
834  if (rtsp_st->dynamic_handler) {
836  rtsp_st->dynamic_protocol_context,
837  rtsp_st->dynamic_handler);
838  }
839  if (rtsp_st->crypto_suite[0])
841  rtsp_st->crypto_suite,
842  rtsp_st->crypto_params);
843  }
844 
845  return 0;
846 }
847 
848 #if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
849 static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
850 {
851  const char *q;
852  char *p;
853  int v;
854 
855  q = *pp;
856  q += strspn(q, SPACE_CHARS);
857  v = strtol(q, &p, 10);
858  if (*p == '-') {
859  p++;
860  *min_ptr = v;
861  v = strtol(p, &p, 10);
862  *max_ptr = v;
863  } else {
864  *min_ptr = v;
865  *max_ptr = v;
866  }
867  *pp = p;
868 }
869 
870 /* XXX: only one transport specification is parsed */
871 static void rtsp_parse_transport(AVFormatContext *s,
872  RTSPMessageHeader *reply, const char *p)
873 {
874  char transport_protocol[16];
875  char profile[16];
876  char lower_transport[16];
877  char parameter[16];
879  char buf[256];
880 
881  reply->nb_transports = 0;
882 
883  for (;;) {
884  p += strspn(p, SPACE_CHARS);
885  if (*p == '\0')
886  break;
887 
888  th = &reply->transports[reply->nb_transports];
889 
890  get_word_sep(transport_protocol, sizeof(transport_protocol),
891  "/", &p);
892  if (!av_strcasecmp (transport_protocol, "rtp")) {
893  get_word_sep(profile, sizeof(profile), "/;,", &p);
894  lower_transport[0] = '\0';
895  /* rtp/avp/<protocol> */
896  if (*p == '/') {
897  get_word_sep(lower_transport, sizeof(lower_transport),
898  ";,", &p);
899  }
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);
905  profile[0] = '\0';
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> */
911  if (*p == '/') {
912  get_word_sep(lower_transport, sizeof(lower_transport),
913  ";,", &p);
914  }
916  }
917  if (!av_strcasecmp(lower_transport, "TCP"))
919  else
921 
922  if (*p == ';')
923  p++;
924  /* get each parameter */
925  while (*p != '\0' && *p != ',') {
926  get_word_sep(parameter, sizeof(parameter), "=;,", &p);
927  if (!strcmp(parameter, "port")) {
928  if (*p == '=') {
929  p++;
930  rtsp_parse_range(&th->port_min, &th->port_max, &p);
931  }
932  } else if (!strcmp(parameter, "client_port")) {
933  if (*p == '=') {
934  p++;
935  rtsp_parse_range(&th->client_port_min,
936  &th->client_port_max, &p);
937  }
938  } else if (!strcmp(parameter, "server_port")) {
939  if (*p == '=') {
940  p++;
941  rtsp_parse_range(&th->server_port_min,
942  &th->server_port_max, &p);
943  }
944  } else if (!strcmp(parameter, "interleaved")) {
945  if (*p == '=') {
946  p++;
947  rtsp_parse_range(&th->interleaved_min,
948  &th->interleaved_max, &p);
949  }
950  } else if (!strcmp(parameter, "multicast")) {
953  } else if (!strcmp(parameter, "ttl")) {
954  if (*p == '=') {
955  char *end;
956  p++;
957  th->ttl = strtol(p, &end, 10);
958  p = end;
959  }
960  } else if (!strcmp(parameter, "destination")) {
961  if (*p == '=') {
962  p++;
963  get_word_sep(buf, sizeof(buf), ";,", &p);
964  get_sockaddr(s, buf, &th->destination);
965  }
966  } else if (!strcmp(parameter, "source")) {
967  if (*p == '=') {
968  p++;
969  get_word_sep(buf, sizeof(buf), ";,", &p);
970  av_strlcpy(th->source, buf, sizeof(th->source));
971  }
972  } else if (!strcmp(parameter, "mode")) {
973  if (*p == '=') {
974  p++;
975  get_word_sep(buf, sizeof(buf), ";, ", &p);
976  if (!strcmp(buf, "record") ||
977  !strcmp(buf, "receive"))
978  th->mode_record = 1;
979  }
980  }
981 
982  while (*p != ';' && *p != '\0' && *p != ',')
983  p++;
984  if (*p == ';')
985  p++;
986  }
987  if (*p == ',')
988  p++;
989 
990  reply->nb_transports++;
991  if (reply->nb_transports >= RTSP_MAX_TRANSPORTS)
992  break;
993  }
994 }
995 
996 static void handle_rtp_info(RTSPState *rt, const char *url,
997  uint32_t seq, uint32_t rtptime)
998 {
999  int i;
1000  if (!rtptime || !url[0])
1001  return;
1002  if (rt->transport != RTSP_TRANSPORT_RTP)
1003  return;
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;
1007  if (!rtpctx)
1008  continue;
1009  if (!strcmp(rtsp_st->control_url, url)) {
1010  rtpctx->base_timestamp = rtptime;
1011  break;
1012  }
1013  }
1014 }
1015 
1016 static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
1017 {
1018  int read = 0;
1019  char key[20], value[1024], url[1024] = "";
1020  uint32_t seq = 0, rtptime = 0;
1021 
1022  for (;;) {
1023  p += strspn(p, SPACE_CHARS);
1024  if (!*p)
1025  break;
1026  get_word_sep(key, sizeof(key), "=", &p);
1027  if (*p != '=')
1028  break;
1029  p++;
1030  get_word_sep(value, sizeof(value), ";, ", &p);
1031  read++;
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);
1038  if (*p == ',') {
1039  handle_rtp_info(rt, url, seq, rtptime);
1040  url[0] = '\0';
1041  seq = rtptime = 0;
1042  read = 0;
1043  }
1044  if (*p)
1045  p++;
1046  }
1047  if (read > 0)
1048  handle_rtp_info(rt, url, seq, rtptime);
1049 }
1050 
1052  RTSPMessageHeader *reply, const char *buf,
1053  RTSPState *rt, const char *method)
1054 {
1055  const char *p;
1056 
1057  /* NOTE: we do case independent match for broken servers */
1058  p = buf;
1059  if (av_stristart(p, "Session:", &p)) {
1060  int t;
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) {
1064  reply->timeout = t;
1065  }
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));
1110  }
1111 }
1112 
1113 /* skip a RTP/TCP interleaved packet */
1115 {
1116  RTSPState *rt = s->priv_data;
1117  int ret, len, len1;
1118  uint8_t buf[1024];
1119 
1120  ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
1121  if (ret != 3)
1122  return;
1123  len = AV_RB16(buf + 1);
1124 
1125  av_log(s, AV_LOG_TRACE, "skipping RTP packet len=%d\n", len);
1126 
1127  /* skip payload */
1128  while (len > 0) {
1129  len1 = len;
1130  if (len1 > sizeof(buf))
1131  len1 = sizeof(buf);
1132  ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
1133  if (ret != len1)
1134  return;
1135  len -= len1;
1136  }
1137 }
1138 
1140  unsigned char **content_ptr,
1141  int return_on_interleaved_data, const char *method)
1142 {
1143  RTSPState *rt = s->priv_data;
1144  char buf[4096], buf1[1024], *q;
1145  unsigned char ch;
1146  const char *p;
1147  int ret, content_length, line_count = 0, request = 0;
1148  unsigned char *content = NULL;
1149 
1150 start:
1151  line_count = 0;
1152  request = 0;
1153  content = NULL;
1154  memset(reply, 0, sizeof(*reply));
1155 
1156  /* parse reply (XXX: use buffers) */
1157  rt->last_reply[0] = '\0';
1158  for (;;) {
1159  q = buf;
1160  for (;;) {
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);
1163  if (ret != 1)
1164  return AVERROR_EOF;
1165  if (ch == '\n')
1166  break;
1167  if (ch == '$' && q == buf) {
1168  if (return_on_interleaved_data) {
1169  return 1;
1170  } else
1172  } else if (ch != '\r') {
1173  if ((q - buf) < sizeof(buf) - 1)
1174  *q++ = ch;
1175  }
1176  }
1177  *q = '\0';
1178 
1179  av_log(s, AV_LOG_TRACE, "line='%s'\n", buf);
1180 
1181  /* test if last line */
1182  if (buf[0] == '\0')
1183  break;
1184  p = buf;
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));
1192  } else {
1193  av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method
1194  get_word(buf1, sizeof(buf1), &p); // object
1195  request = 1;
1196  }
1197  } else {
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));
1201  }
1202  line_count++;
1203  }
1204 
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));
1207 
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);
1212  if (!content)
1213  return AVERROR(ENOMEM);
1214  ffurl_read_complete(rt->rtsp_hd, content, content_length);
1215  content[content_length] = '\0';
1216  }
1217  if (content_ptr)
1218  *content_ptr = content;
1219  else
1220  av_freep(&content);
1221 
1222  if (request) {
1223  char buf[1024];
1224  char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1225  const char* ptr = buf;
1226 
1227  if (!strcmp(reply->reason, "OPTIONS")) {
1228  snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n");
1229  if (reply->seq)
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",
1233  reply->session_id);
1234  } else {
1235  snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n");
1236  }
1237  av_strlcat(buf, "\r\n", sizeof(buf));
1238 
1239  if (rt->control_transport == RTSP_MODE_TUNNEL) {
1240  av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1241  ptr = base64buf;
1242  }
1243  ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr));
1244 
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. */
1249  if (content_ptr)
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. */
1255  if (method)
1256  goto start;
1257  return 0;
1258  }
1259 
1260  if (rt->seq != reply->seq) {
1261  av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
1262  rt->seq, reply->seq);
1263  }
1264 
1265  /* EOS */
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);
1275 
1276  return 0;
1277 }
1278 
1279 /**
1280  * Send a command to the RTSP server without waiting for the reply.
1281  *
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
1289  *
1290  * @return zero if success, nonzero otherwise
1291  */
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)
1297 {
1298  RTSPState *rt = s->priv_data;
1299  char buf[4096], *out_buf;
1300  char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1301 
1302  /* Add in RTSP headers */
1303  out_buf = buf;
1304  rt->seq++;
1305  snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1306  if (headers)
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", rt->user_agent);
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);
1313  }
1314  if (rt->auth[0]) {
1315  char *str = ff_http_auth_create_response(&rt->auth_state,
1316  rt->auth, url, method);
1317  if (str)
1318  av_strlcat(buf, str, sizeof(buf));
1319  av_free(str);
1320  }
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));
1324 
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;
1329  }
1330 
1331  av_log(s, AV_LOG_TRACE, "Sending:\n%s--\n", buf);
1332 
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  av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1337  "with content data not supported\n");
1338  return AVERROR_PATCHWELCOME;
1339  }
1340  ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
1341  }
1343 
1344  return 0;
1345 }
1346 
1347 int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
1348  const char *url, const char *headers)
1349 {
1350  return rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
1351 }
1352 
1353 int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
1354  const char *headers, RTSPMessageHeader *reply,
1355  unsigned char **content_ptr)
1356 {
1357  return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
1358  content_ptr, NULL, 0);
1359 }
1360 
1362  const char *method, const char *url,
1363  const char *header,
1364  RTSPMessageHeader *reply,
1365  unsigned char **content_ptr,
1366  const unsigned char *send_content,
1367  int send_content_length)
1368 {
1369  RTSPState *rt = s->priv_data;
1370  HTTPAuthType cur_auth_type;
1371  int ret, attempts = 0;
1372 
1373 retry:
1374  cur_auth_type = rt->auth_state.auth_type;
1375  if ((ret = rtsp_send_cmd_with_content_async(s, method, url, header,
1376  send_content,
1377  send_content_length)))
1378  return ret;
1379 
1380  if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
1381  return ret;
1382  attempts++;
1383 
1384  if (reply->status_code == 401 &&
1385  (cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) &&
1386  rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2)
1387  goto retry;
1388 
1389  if (reply->status_code > 400){
1390  av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
1391  method,
1392  reply->status_code,
1393  reply->reason);
1394  av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1395  }
1396 
1397  return 0;
1398 }
1399 
1400 int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
1401  int lower_transport, const char *real_challenge)
1402 {
1403  RTSPState *rt = s->priv_data;
1404  int rtx = 0, j, i, err, interleave = 0, port_off;
1405  RTSPStream *rtsp_st;
1406  RTSPMessageHeader reply1, *reply = &reply1;
1407  char cmd[2048];
1408  const char *trans_pref;
1409 
1410  if (rt->transport == RTSP_TRANSPORT_RDT)
1411  trans_pref = "x-pn-tng";
1412  else if (rt->transport == RTSP_TRANSPORT_RAW)
1413  trans_pref = "RAW/RAW";
1414  else
1415  trans_pref = "RTP/AVP";
1416 
1417  /* default timeout: 1 minute */
1418  rt->timeout = 60;
1419 
1420  /* Choose a random starting offset within the first half of the
1421  * port range, to allow for a number of ports to try even if the offset
1422  * happens to be at the end of the random range. */
1423  port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2);
1424  /* even random offset */
1425  port_off -= port_off & 0x01;
1426 
1427  for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) {
1428  char transport[2048];
1429 
1430  /*
1431  * WMS serves all UDP data over a single connection, the RTX, which
1432  * isn't necessarily the first in the SDP but has to be the first
1433  * to be set up, else the second/third SETUP will fail with a 461.
1434  */
1435  if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1436  rt->server_type == RTSP_SERVER_WMS) {
1437  if (i == 0) {
1438  /* rtx first */
1439  for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1440  int len = strlen(rt->rtsp_streams[rtx]->control_url);
1441  if (len >= 4 &&
1442  !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1443  "/rtx"))
1444  break;
1445  }
1446  if (rtx == rt->nb_rtsp_streams)
1447  return -1; /* no RTX found */
1448  rtsp_st = rt->rtsp_streams[rtx];
1449  } else
1450  rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1451  } else
1452  rtsp_st = rt->rtsp_streams[i];
1453 
1454  /* RTP/UDP */
1455  if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
1456  char buf[256];
1457 
1458  if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1459  port = reply->transports[0].client_port_min;
1460  goto have_port;
1461  }
1462 
1463  /* first try in specified port range */
1464  while (j <= rt->rtp_port_max) {
1465  AVDictionary *opts = map_to_opts(rt);
1466 
1467  ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1468  "?localport=%d", j);
1469  /* we will use two ports per rtp stream (rtp and rtcp) */
1470  j += 2;
1473 
1474  av_dict_free(&opts);
1475 
1476  if (!err)
1477  goto rtp_opened;
1478  }
1479  av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1480  err = AVERROR(EIO);
1481  goto fail;
1482 
1483  rtp_opened:
1484  port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
1485  have_port:
1486  snprintf(transport, sizeof(transport) - 1,
1487  "%s/UDP;", trans_pref);
1488  if (rt->server_type != RTSP_SERVER_REAL)
1489  av_strlcat(transport, "unicast;", sizeof(transport));
1490  av_strlcatf(transport, sizeof(transport),
1491  "client_port=%d", port);
1492  if (rt->transport == RTSP_TRANSPORT_RTP &&
1493  !(rt->server_type == RTSP_SERVER_WMS && i > 0))
1494  av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1495  }
1496 
1497  /* RTP/TCP */
1498  else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1499  /* For WMS streams, the application streams are only used for
1500  * UDP. When trying to set it up for TCP streams, the server
1501  * will return an error. Therefore, we skip those streams. */
1502  if (rt->server_type == RTSP_SERVER_WMS &&
1503  (rtsp_st->stream_index < 0 ||
1504  s->streams[rtsp_st->stream_index]->codecpar->codec_type ==
1506  continue;
1507  snprintf(transport, sizeof(transport) - 1,
1508  "%s/TCP;", trans_pref);
1509  if (rt->transport != RTSP_TRANSPORT_RDT)
1510  av_strlcat(transport, "unicast;", sizeof(transport));
1511  av_strlcatf(transport, sizeof(transport),
1512  "interleaved=%d-%d",
1513  interleave, interleave + 1);
1514  interleave += 2;
1515  }
1516 
1517  else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
1518  snprintf(transport, sizeof(transport) - 1,
1519  "%s/UDP;multicast", trans_pref);
1520  }
1521  if (s->oformat) {
1522  av_strlcat(transport, ";mode=record", sizeof(transport));
1523  } else if (rt->server_type == RTSP_SERVER_REAL ||
1525  av_strlcat(transport, ";mode=play", sizeof(transport));
1526  snprintf(cmd, sizeof(cmd),
1527  "Transport: %s\r\n",
1528  transport);
1529  if (rt->accept_dynamic_rate)
1530  av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
1531  if (CONFIG_RTPDEC && i == 0 && rt->server_type == RTSP_SERVER_REAL) {
1532  char real_res[41], real_csum[9];
1533  ff_rdt_calc_response_and_checksum(real_res, real_csum,
1534  real_challenge);
1535  av_strlcatf(cmd, sizeof(cmd),
1536  "If-Match: %s\r\n"
1537  "RealChallenge2: %s, sd=%s\r\n",
1538  rt->session_id, real_res, real_csum);
1539  }
1540  ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
1541  if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1542  err = 1;
1543  goto fail;
1544  } else if (reply->status_code != RTSP_STATUS_OK ||
1545  reply->nb_transports != 1) {
1547  goto fail;
1548  }
1549 
1550  /* XXX: same protocol for all streams is required */
1551  if (i > 0) {
1552  if (reply->transports[0].lower_transport != rt->lower_transport ||
1553  reply->transports[0].transport != rt->transport) {
1554  err = AVERROR_INVALIDDATA;
1555  goto fail;
1556  }
1557  } else {
1558  rt->lower_transport = reply->transports[0].lower_transport;
1559  rt->transport = reply->transports[0].transport;
1560  }
1561 
1562  /* Fail if the server responded with another lower transport mode
1563  * than what we requested. */
1564  if (reply->transports[0].lower_transport != lower_transport) {
1565  av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1566  err = AVERROR_INVALIDDATA;
1567  goto fail;
1568  }
1569 
1570  switch(reply->transports[0].lower_transport) {
1572  rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1573  rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1574  break;
1575 
1576  case RTSP_LOWER_TRANSPORT_UDP: {
1577  char url[1024], options[30] = "";
1578  const char *peer = host;
1579 
1580  if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
1581  av_strlcpy(options, "?connect=1", sizeof(options));
1582  /* Use source address if specified */
1583  if (reply->transports[0].source[0])
1584  peer = reply->transports[0].source;
1585  ff_url_join(url, sizeof(url), "rtp", NULL, peer,
1586  reply->transports[0].server_port_min, "%s", options);
1587  if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1588  ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1589  err = AVERROR_INVALIDDATA;
1590  goto fail;
1591  }
1592  break;
1593  }
1595  char url[1024], namebuf[50], optbuf[20] = "";
1596  struct sockaddr_storage addr;
1597  int port, ttl;
1598 
1599  if (reply->transports[0].destination.ss_family) {
1600  addr = reply->transports[0].destination;
1601  port = reply->transports[0].port_min;
1602  ttl = reply->transports[0].ttl;
1603  } else {
1604  addr = rtsp_st->sdp_ip;
1605  port = rtsp_st->sdp_port;
1606  ttl = rtsp_st->sdp_ttl;
1607  }
1608  if (ttl > 0)
1609  snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
1610  getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1611  namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1612  ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
1613  port, "%s", optbuf);
1616  err = AVERROR_INVALIDDATA;
1617  goto fail;
1618  }
1619  break;
1620  }
1621  }
1622 
1623  if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
1624  goto fail;
1625  }
1626 
1627  if (rt->nb_rtsp_streams && reply->timeout > 0)
1628  rt->timeout = reply->timeout;
1629 
1630  if (rt->server_type == RTSP_SERVER_REAL)
1631  rt->need_subscription = 1;
1632 
1633  return 0;
1634 
1635 fail:
1636  ff_rtsp_undo_setup(s, 0);
1637  return err;
1638 }
1639 
1641 {
1642  RTSPState *rt = s->priv_data;
1643  if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1644  ffurl_close(rt->rtsp_hd);
1645  rt->rtsp_hd = rt->rtsp_hd_out = NULL;
1646 }
1647 
1649 {
1650  RTSPState *rt = s->priv_data;
1651  char proto[128], host[1024], path[1024];
1652  char tcpname[1024], cmd[2048], auth[128];
1653  const char *lower_rtsp_proto = "tcp";
1654  int port, err, tcp_fd;
1655  RTSPMessageHeader reply1 = {0}, *reply = &reply1;
1656  int lower_transport_mask = 0;
1657  int default_port = RTSP_DEFAULT_PORT;
1658  char real_challenge[64] = "";
1659  struct sockaddr_storage peer;
1660  socklen_t peer_len = sizeof(peer);
1661 
1662  if (rt->rtp_port_max < rt->rtp_port_min) {
1663  av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1664  "than min port %d\n", rt->rtp_port_max,
1665  rt->rtp_port_min);
1666  return AVERROR(EINVAL);
1667  }
1668 
1669  if (!ff_network_init())
1670  return AVERROR(EIO);
1671 
1672  if (s->max_delay < 0) /* Not set by the caller */
1674 
1679  }
1680  /* Only pass through valid flags from here */
1682 
1683 redirect:
1684  /* extract hostname and port */
1685  av_url_split(proto, sizeof(proto), auth, sizeof(auth),
1686  host, sizeof(host), &port, path, sizeof(path), s->filename);
1687 
1688  if (!strcmp(proto, "rtsps")) {
1689  lower_rtsp_proto = "tls";
1690  default_port = RTSPS_DEFAULT_PORT;
1692  }
1693 
1694  if (*auth) {
1695  av_strlcpy(rt->auth, auth, sizeof(rt->auth));
1696  }
1697  if (port < 0)
1698  port = default_port;
1699 
1700  lower_transport_mask = rt->lower_transport_mask;
1701 
1702  if (!lower_transport_mask)
1703  lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
1704 
1705  if (s->oformat) {
1706  /* Only UDP or TCP - UDP multicast isn't supported. */
1707  lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1708  (1 << RTSP_LOWER_TRANSPORT_TCP);
1709  if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
1710  av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
1711  "only UDP and TCP are supported for output.\n");
1712  err = AVERROR(EINVAL);
1713  goto fail;
1714  }
1715  }
1716 
1717  /* Construct the URI used in request; this is similar to s->filename,
1718  * but with authentication credentials removed and RTSP specific options
1719  * stripped out. */
1720  ff_url_join(rt->control_uri, sizeof(rt->control_uri), proto, NULL,
1721  host, port, "%s", path);
1722 
1723  if (rt->control_transport == RTSP_MODE_TUNNEL) {
1724  /* set up initial handshake for tunneling */
1725  char httpname[1024];
1726  char sessioncookie[17];
1727  char headers[1024];
1728 
1729  ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
1730  snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1732 
1733  /* GET requests */
1734  if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1735  &s->interrupt_callback) < 0) {
1736  err = AVERROR(EIO);
1737  goto fail;
1738  }
1739 
1740  /* generate GET headers */
1741  snprintf(headers, sizeof(headers),
1742  "x-sessioncookie: %s\r\n"
1743  "Accept: application/x-rtsp-tunnelled\r\n"
1744  "Pragma: no-cache\r\n"
1745  "Cache-Control: no-cache\r\n",
1746  sessioncookie);
1747  av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
1748 
1749  /* complete the connection */
1750  if (ffurl_connect(rt->rtsp_hd, NULL)) {
1751  err = AVERROR(EIO);
1752  goto fail;
1753  }
1754 
1755  /* POST requests */
1756  if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
1757  &s->interrupt_callback) < 0 ) {
1758  err = AVERROR(EIO);
1759  goto fail;
1760  }
1761 
1762  /* generate POST headers */
1763  snprintf(headers, sizeof(headers),
1764  "x-sessioncookie: %s\r\n"
1765  "Content-Type: application/x-rtsp-tunnelled\r\n"
1766  "Pragma: no-cache\r\n"
1767  "Cache-Control: no-cache\r\n"
1768  "Content-Length: 32767\r\n"
1769  "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1770  sessioncookie);
1771  av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
1772  av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
1773 
1774  /* Initialize the authentication state for the POST session. The HTTP
1775  * protocol implementation doesn't properly handle multi-pass
1776  * authentication for POST requests, since it would require one of
1777  * the following:
1778  * - implementing Expect: 100-continue, which many HTTP servers
1779  * don't support anyway, even less the RTSP servers that do HTTP
1780  * tunneling
1781  * - sending the whole POST data until getting a 401 reply specifying
1782  * what authentication method to use, then resending all that data
1783  * - waiting for potential 401 replies directly after sending the
1784  * POST header (waiting for some unspecified time)
1785  * Therefore, we copy the full auth state, which works for both basic
1786  * and digest. (For digest, we would have to synchronize the nonce
1787  * count variable between the two sessions, if we'd do more requests
1788  * with the original session, though.)
1789  */
1791 
1792  /* complete the connection */
1793  if (ffurl_connect(rt->rtsp_hd_out, NULL)) {
1794  err = AVERROR(EIO);
1795  goto fail;
1796  }
1797  } else {
1798  int ret;
1799  /* open the tcp connection */
1800  ff_url_join(tcpname, sizeof(tcpname), lower_rtsp_proto, NULL,
1801  host, port,
1802  "?timeout=%d", rt->stimeout);
1803  if ((ret = ffurl_open_whitelist(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
1805  err = ret;
1806  goto fail;
1807  }
1808  rt->rtsp_hd_out = rt->rtsp_hd;
1809  }
1810  rt->seq = 0;
1811 
1812  tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
1813  if (tcp_fd < 0) {
1814  err = tcp_fd;
1815  goto fail;
1816  }
1817  if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1818  getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1819  NULL, 0, NI_NUMERICHOST);
1820  }
1821 
1822  /* request options supported by the server; this also detects server
1823  * type */
1824  for (rt->server_type = RTSP_SERVER_RTP;;) {
1825  cmd[0] = 0;
1826  if (rt->server_type == RTSP_SERVER_REAL)
1827  av_strlcat(cmd,
1828  /*
1829  * The following entries are required for proper
1830  * streaming from a Realmedia server. They are
1831  * interdependent in some way although we currently
1832  * don't quite understand how. Values were copied
1833  * from mplayer SVN r23589.
1834  * ClientChallenge is a 16-byte ID in hex
1835  * CompanyID is a 16-byte ID in base64
1836  */
1837  "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1838  "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1839  "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1840  "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1841  sizeof(cmd));
1842  ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1843  if (reply->status_code != RTSP_STATUS_OK) {
1845  goto fail;
1846  }
1847 
1848  /* detect server type if not standard-compliant RTP */
1849  if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1851  continue;
1852  } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
1854  } else if (rt->server_type == RTSP_SERVER_REAL)
1855  strcpy(real_challenge, reply->real_challenge);
1856  break;
1857  }
1858 
1859  if (CONFIG_RTSP_DEMUXER && s->iformat)
1860  err = ff_rtsp_setup_input_streams(s, reply);
1861  else if (CONFIG_RTSP_MUXER)
1862  err = ff_rtsp_setup_output_streams(s, host);
1863  else
1864  av_assert0(0);
1865  if (err)
1866  goto fail;
1867 
1868  do {
1869  int lower_transport = ff_log2_tab[lower_transport_mask &
1870  ~(lower_transport_mask - 1)];
1871 
1872  if ((lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_TCP))
1873  && (rt->rtsp_flags & RTSP_FLAG_PREFER_TCP))
1874  lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1875 
1876  err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
1877  rt->server_type == RTSP_SERVER_REAL ?
1878  real_challenge : NULL);
1879  if (err < 0)
1880  goto fail;
1881  lower_transport_mask &= ~(1 << lower_transport);
1882  if (lower_transport_mask == 0 && err == 1) {
1883  err = AVERROR(EPROTONOSUPPORT);
1884  goto fail;
1885  }
1886  } while (err);
1887 
1888  rt->lower_transport_mask = lower_transport_mask;
1889  av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
1890  rt->state = RTSP_STATE_IDLE;
1891  rt->seek_timestamp = 0; /* default is to start stream at position zero */
1892  return 0;
1893  fail:
1896  if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
1897  av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1898  rt->session_id[0] = '\0';
1899  av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1900  reply->status_code,
1901  s->filename);
1902  goto redirect;
1903  }
1904  ff_network_close();
1905  return err;
1906 }
1907 #endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1908 
1909 #if CONFIG_RTPDEC
1910 static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1911  uint8_t *buf, int buf_size, int64_t wait_end)
1912 {
1913  RTSPState *rt = s->priv_data;
1914  RTSPStream *rtsp_st;
1915  int n, i, ret, tcp_fd, timeout_cnt = 0;
1916  int max_p = 0;
1917  struct pollfd *p = rt->p;
1918  int *fds = NULL, fdsnum, fdsidx;
1919 
1920  for (;;) {
1922  return AVERROR_EXIT;
1923  if (wait_end && wait_end - av_gettime_relative() < 0)
1924  return AVERROR(EAGAIN);
1925  max_p = 0;
1926  if (rt->rtsp_hd) {
1927  tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
1928  p[max_p].fd = tcp_fd;
1929  p[max_p++].events = POLLIN;
1930  } else {
1931  tcp_fd = -1;
1932  }
1933  for (i = 0; i < rt->nb_rtsp_streams; i++) {
1934  rtsp_st = rt->rtsp_streams[i];
1935  if (rtsp_st->rtp_handle) {
1936  if (ret = ffurl_get_multi_file_handle(rtsp_st->rtp_handle,
1937  &fds, &fdsnum)) {
1938  av_log(s, AV_LOG_ERROR, "Unable to recover rtp ports\n");
1939  return ret;
1940  }
1941  if (fdsnum != 2) {
1942  av_log(s, AV_LOG_ERROR,
1943  "Number of fds %d not supported\n", fdsnum);
1944  return AVERROR_INVALIDDATA;
1945  }
1946  for (fdsidx = 0; fdsidx < fdsnum; fdsidx++) {
1947  p[max_p].fd = fds[fdsidx];
1948  p[max_p++].events = POLLIN;
1949  }
1950  av_freep(&fds);
1951  }
1952  }
1953  n = poll(p, max_p, POLL_TIMEOUT_MS);
1954  if (n > 0) {
1955  int j = 1 - (tcp_fd == -1);
1956  timeout_cnt = 0;
1957  for (i = 0; i < rt->nb_rtsp_streams; i++) {
1958  rtsp_st = rt->rtsp_streams[i];
1959  if (rtsp_st->rtp_handle) {
1960  if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
1961  ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
1962  if (ret > 0) {
1963  *prtsp_st = rtsp_st;
1964  return ret;
1965  }
1966  }
1967  j+=2;
1968  }
1969  }
1970 #if CONFIG_RTSP_DEMUXER
1971  if (tcp_fd != -1 && p[0].revents & POLLIN) {
1972  if (rt->rtsp_flags & RTSP_FLAG_LISTEN) {
1973  if (rt->state == RTSP_STATE_STREAMING) {
1975  return AVERROR_EOF;
1976  else
1978  "Unable to answer to TEARDOWN\n");
1979  } else
1980  return 0;
1981  } else {
1982  RTSPMessageHeader reply;
1983  ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
1984  if (ret < 0)
1985  return ret;
1986  /* XXX: parse message */
1987  if (rt->state != RTSP_STATE_STREAMING)
1988  return 0;
1989  }
1990  }
1991 #endif
1992  } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
1993  return AVERROR(ETIMEDOUT);
1994  } else if (n < 0 && errno != EINTR)
1995  return AVERROR(errno);
1996  }
1997 }
1998 
1999 static int pick_stream(AVFormatContext *s, RTSPStream **rtsp_st,
2000  const uint8_t *buf, int len)
2001 {
2002  RTSPState *rt = s->priv_data;
2003  int i;
2004  if (len < 0)
2005  return len;
2006  if (rt->nb_rtsp_streams == 1) {
2007  *rtsp_st = rt->rtsp_streams[0];
2008  return len;
2009  }
2010  if (len >= 8 && rt->transport == RTSP_TRANSPORT_RTP) {
2011  if (RTP_PT_IS_RTCP(rt->recvbuf[1])) {
2012  int no_ssrc = 0;
2013  for (i = 0; i < rt->nb_rtsp_streams; i++) {
2014  RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
2015  if (!rtpctx)
2016  continue;
2017  if (rtpctx->ssrc == AV_RB32(&buf[4])) {
2018  *rtsp_st = rt->rtsp_streams[i];
2019  return len;
2020  }
2021  if (!rtpctx->ssrc)
2022  no_ssrc = 1;
2023  }
2024  if (no_ssrc) {
2026  "Unable to pick stream for packet - SSRC not known for "
2027  "all streams\n");
2028  return AVERROR(EAGAIN);
2029  }
2030  } else {
2031  for (i = 0; i < rt->nb_rtsp_streams; i++) {
2032  if ((buf[1] & 0x7f) == rt->rtsp_streams[i]->sdp_payload_type) {
2033  *rtsp_st = rt->rtsp_streams[i];
2034  return len;
2035  }
2036  }
2037  }
2038  }
2039  av_log(s, AV_LOG_WARNING, "Unable to pick stream for packet\n");
2040  return AVERROR(EAGAIN);
2041 }
2042 
2044 {
2045  RTSPState *rt = s->priv_data;
2046  int ret, len;
2047  RTSPStream *rtsp_st, *first_queue_st = NULL;
2048  int64_t wait_end = 0;
2049 
2050  if (rt->nb_byes == rt->nb_rtsp_streams)
2051  return AVERROR_EOF;
2052 
2053  /* get next frames from the same RTP packet */
2054  if (rt->cur_transport_priv) {
2055  if (rt->transport == RTSP_TRANSPORT_RDT) {
2056  ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
2057  } else if (rt->transport == RTSP_TRANSPORT_RTP) {
2058  ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
2059  } else if (CONFIG_RTPDEC && rt->ts) {
2060  ret = avpriv_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf + rt->recvbuf_pos, rt->recvbuf_len - rt->recvbuf_pos);
2061  if (ret >= 0) {
2062  rt->recvbuf_pos += ret;
2063  ret = rt->recvbuf_pos < rt->recvbuf_len;
2064  }
2065  } else
2066  ret = -1;
2067  if (ret == 0) {
2068  rt->cur_transport_priv = NULL;
2069  return 0;
2070  } else if (ret == 1) {
2071  return 0;
2072  } else
2073  rt->cur_transport_priv = NULL;
2074  }
2075 
2076 redo:
2077  if (rt->transport == RTSP_TRANSPORT_RTP) {
2078  int i;
2079  int64_t first_queue_time = 0;
2080  for (i = 0; i < rt->nb_rtsp_streams; i++) {
2081  RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
2082  int64_t queue_time;
2083  if (!rtpctx)
2084  continue;
2085  queue_time = ff_rtp_queued_packet_time(rtpctx);
2086  if (queue_time && (queue_time - first_queue_time < 0 ||
2087  !first_queue_time)) {
2088  first_queue_time = queue_time;
2089  first_queue_st = rt->rtsp_streams[i];
2090  }
2091  }
2092  if (first_queue_time) {
2093  wait_end = first_queue_time + s->max_delay;
2094  } else {
2095  wait_end = 0;
2096  first_queue_st = NULL;
2097  }
2098  }
2099 
2100  /* read next RTP packet */
2101  if (!rt->recvbuf) {
2103  if (!rt->recvbuf)
2104  return AVERROR(ENOMEM);
2105  }
2106 
2107  switch(rt->lower_transport) {
2108  default:
2109 #if CONFIG_RTSP_DEMUXER
2111  len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
2112  break;
2113 #endif
2116  len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2117  if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
2118  ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, rtsp_st->rtp_handle, NULL, len);
2119  break;
2121  if (first_queue_st && rt->transport == RTSP_TRANSPORT_RTP &&
2122  wait_end && wait_end < av_gettime_relative())
2123  len = AVERROR(EAGAIN);
2124  else
2125  len = ffio_read_partial(s->pb, rt->recvbuf, RECVBUF_SIZE);
2126  len = pick_stream(s, &rtsp_st, rt->recvbuf, len);
2127  if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
2129  break;
2130  }
2131  if (len == AVERROR(EAGAIN) && first_queue_st &&
2132  rt->transport == RTSP_TRANSPORT_RTP) {
2134  "max delay reached. need to consume packet\n");
2135  rtsp_st = first_queue_st;
2136  ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
2137  goto end;
2138  }
2139  if (len < 0)
2140  return len;
2141  if (len == 0)
2142  return AVERROR_EOF;
2143  if (rt->transport == RTSP_TRANSPORT_RDT) {
2144  ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2145  } else if (rt->transport == RTSP_TRANSPORT_RTP) {
2146  ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2147  if (rtsp_st->feedback) {
2148  AVIOContext *pb = NULL;
2150  pb = s->pb;
2151  ff_rtp_send_rtcp_feedback(rtsp_st->transport_priv, rtsp_st->rtp_handle, pb);
2152  }
2153  if (ret < 0) {
2154  /* Either bad packet, or a RTCP packet. Check if the
2155  * first_rtcp_ntp_time field was initialized. */
2156  RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
2157  if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
2158  /* first_rtcp_ntp_time has been initialized for this stream,
2159  * copy the same value to all other uninitialized streams,
2160  * in order to map their timestamp origin to the same ntp time
2161  * as this one. */
2162  int i;
2163  AVStream *st = NULL;
2164  if (rtsp_st->stream_index >= 0)
2165  st = s->streams[rtsp_st->stream_index];
2166  for (i = 0; i < rt->nb_rtsp_streams; i++) {
2167  RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
2168  AVStream *st2 = NULL;
2169  if (rt->rtsp_streams[i]->stream_index >= 0)
2170  st2 = s->streams[rt->rtsp_streams[i]->stream_index];
2171  if (rtpctx2 && st && st2 &&
2172  rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2173  rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
2174  rtpctx2->rtcp_ts_offset = av_rescale_q(
2175  rtpctx->rtcp_ts_offset, st->time_base,
2176  st2->time_base);
2177  }
2178  }
2179  // Make real NTP start time available in AVFormatContext
2180  if (s->start_time_realtime == AV_NOPTS_VALUE) {
2181  s->start_time_realtime = av_rescale (rtpctx->first_rtcp_ntp_time - (NTP_OFFSET << 32), 1000000, 1LL << 32);
2182  if (rtpctx->st) {
2183  s->start_time_realtime -=
2184  av_rescale (rtpctx->rtcp_ts_offset,
2185  (uint64_t) rtpctx->st->time_base.num * 1000000,
2186  rtpctx->st->time_base.den);
2187  }
2188  }
2189  }
2190  if (ret == -RTCP_BYE) {
2191  rt->nb_byes++;
2192 
2193  av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
2194  rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
2195 
2196  if (rt->nb_byes == rt->nb_rtsp_streams)
2197  return AVERROR_EOF;
2198  }
2199  }
2200  } else if (CONFIG_RTPDEC && rt->ts) {
2201  ret = avpriv_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf, len);
2202  if (ret >= 0) {
2203  if (ret < len) {
2204  rt->recvbuf_len = len;
2205  rt->recvbuf_pos = ret;
2206  rt->cur_transport_priv = rt->ts;
2207  return 1;
2208  } else {
2209  ret = 0;
2210  }
2211  }
2212  } else {
2213  return AVERROR_INVALIDDATA;
2214  }
2215 end:
2216  if (ret < 0)
2217  goto redo;
2218  if (ret == 1)
2219  /* more packets may follow, so we save the RTP context */
2220  rt->cur_transport_priv = rtsp_st->transport_priv;
2221 
2222  return ret;
2223 }
2224 #endif /* CONFIG_RTPDEC */
2225 
2226 #if CONFIG_SDP_DEMUXER
2227 static int sdp_probe(AVProbeData *p1)
2228 {
2229  const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
2230 
2231  /* we look for a line beginning "c=IN IP" */
2232  while (p < p_end && *p != '\0') {
2233  if (sizeof("c=IN IP") - 1 < p_end - p &&
2234  av_strstart(p, "c=IN IP", NULL))
2235  return AVPROBE_SCORE_EXTENSION;
2236 
2237  while (p < p_end - 1 && *p != '\n') p++;
2238  if (++p >= p_end)
2239  break;
2240  if (*p == '\r')
2241  p++;
2242  }
2243  return 0;
2244 }
2245 
2246 static void append_source_addrs(char *buf, int size, const char *name,
2247  int count, struct RTSPSource **addrs)
2248 {
2249  int i;
2250  if (!count)
2251  return;
2252  av_strlcatf(buf, size, "&%s=%s", name, addrs[0]->addr);
2253  for (i = 1; i < count; i++)
2254  av_strlcatf(buf, size, ",%s", addrs[i]->addr);
2255 }
2256 
2257 static int sdp_read_header(AVFormatContext *s)
2258 {
2259  RTSPState *rt = s->priv_data;
2260  RTSPStream *rtsp_st;
2261  int size, i, err;
2262  char *content;
2263  char url[1024];
2264 
2265  if (!ff_network_init())
2266  return AVERROR(EIO);
2267 
2268  if (s->max_delay < 0) /* Not set by the caller */
2270  if (rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)
2272 
2273  /* read the whole sdp file */
2274  /* XXX: better loading */
2275  content = av_malloc(SDP_MAX_SIZE);
2276  if (!content)
2277  return AVERROR(ENOMEM);
2278  size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
2279  if (size <= 0) {
2280  av_free(content);
2281  return AVERROR_INVALIDDATA;
2282  }
2283  content[size] ='\0';
2284 
2285  err = ff_sdp_parse(s, content);
2286  av_freep(&content);
2287  if (err) goto fail;
2288 
2289  /* open each RTP stream */
2290  for (i = 0; i < rt->nb_rtsp_streams; i++) {
2291  char namebuf[50];
2292  rtsp_st = rt->rtsp_streams[i];
2293 
2294  if (!(rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)) {
2295  AVDictionary *opts = map_to_opts(rt);
2296 
2297  err = getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip,
2298  sizeof(rtsp_st->sdp_ip),
2299  namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
2300  if (err) {
2301  av_log(s, AV_LOG_ERROR, "getnameinfo: %s\n", gai_strerror(err));
2302  err = AVERROR(EIO);
2303  av_dict_free(&opts);
2304  goto fail;
2305  }
2306  ff_url_join(url, sizeof(url), "rtp", NULL,
2307  namebuf, rtsp_st->sdp_port,
2308  "?localport=%d&ttl=%d&connect=%d&write_to_source=%d",
2309  rtsp_st->sdp_port, rtsp_st->sdp_ttl,
2310  rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0,
2311  rt->rtsp_flags & RTSP_FLAG_RTCP_TO_SOURCE ? 1 : 0);
2312 
2313  append_source_addrs(url, sizeof(url), "sources",
2314  rtsp_st->nb_include_source_addrs,
2315  rtsp_st->include_source_addrs);
2316  append_source_addrs(url, sizeof(url), "block",
2317  rtsp_st->nb_exclude_source_addrs,
2318  rtsp_st->exclude_source_addrs);
2319  err = ffurl_open_whitelist(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ,
2321 
2322  av_dict_free(&opts);
2323 
2324  if (err < 0) {
2325  err = AVERROR_INVALIDDATA;
2326  goto fail;
2327  }
2328  }
2329  if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
2330  goto fail;
2331  }
2332  return 0;
2333 fail:
2335  ff_network_close();
2336  return err;
2337 }
2338 
2339 static int sdp_read_close(AVFormatContext *s)
2340 {
2342  ff_network_close();
2343  return 0;
2344 }
2345 
2346 static const AVClass sdp_demuxer_class = {
2347  .class_name = "SDP demuxer",
2348  .item_name = av_default_item_name,
2349  .option = sdp_options,
2350  .version = LIBAVUTIL_VERSION_INT,
2351 };
2352 
2353 AVInputFormat ff_sdp_demuxer = {
2354  .name = "sdp",
2355  .long_name = NULL_IF_CONFIG_SMALL("SDP"),
2356  .priv_data_size = sizeof(RTSPState),
2357  .read_probe = sdp_probe,
2358  .read_header = sdp_read_header,
2360  .read_close = sdp_read_close,
2361  .priv_class = &sdp_demuxer_class,
2362 };
2363 #endif /* CONFIG_SDP_DEMUXER */
2364 
2365 #if CONFIG_RTP_DEMUXER
2366 static int rtp_probe(AVProbeData *p)
2367 {
2368  if (av_strstart(p->filename, "rtp:", NULL))
2369  return AVPROBE_SCORE_MAX;
2370  return 0;
2371 }
2372 
2373 static int rtp_read_header(AVFormatContext *s)
2374 {
2375  uint8_t recvbuf[RTP_MAX_PACKET_LENGTH];
2376  char host[500], sdp[500];
2377  int ret, port;
2378  URLContext* in = NULL;
2379  int payload_type;
2380  AVCodecParameters *par = NULL;
2381  struct sockaddr_storage addr;
2382  AVIOContext pb;
2383  socklen_t addrlen = sizeof(addr);
2384  RTSPState *rt = s->priv_data;
2385 
2386  if (!ff_network_init())
2387  return AVERROR(EIO);
2388 
2391  if (ret)
2392  goto fail;
2393 
2394  while (1) {
2395  ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
2396  if (ret == AVERROR(EAGAIN))
2397  continue;
2398  if (ret < 0)
2399  goto fail;
2400  if (ret < 12) {
2401  av_log(s, AV_LOG_WARNING, "Received too short packet\n");
2402  continue;
2403  }
2404 
2405  if ((recvbuf[0] & 0xc0) != 0x80) {
2406  av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
2407  "received\n");
2408  continue;
2409  }
2410 
2411  if (RTP_PT_IS_RTCP(recvbuf[1]))
2412  continue;
2413 
2414  payload_type = recvbuf[1] & 0x7f;
2415  break;
2416  }
2417  getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
2418  ffurl_close(in);
2419  in = NULL;
2420 
2421  par = avcodec_parameters_alloc();
2422  if (!par) {
2423  ret = AVERROR(ENOMEM);
2424  goto fail;
2425  }
2426 
2427  if (ff_rtp_get_codec_info(par, payload_type)) {
2428  av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
2429  "without an SDP file describing it\n",
2430  payload_type);
2431  goto fail;
2432  }
2433  if (par->codec_type != AVMEDIA_TYPE_DATA) {
2434  av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
2435  "properly you need an SDP file "
2436  "describing it\n");
2437  }
2438 
2439  av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
2440  NULL, 0, s->filename);
2441 
2442  snprintf(sdp, sizeof(sdp),
2443  "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
2444  addr.ss_family == AF_INET ? 4 : 6, host,
2445  par->codec_type == AVMEDIA_TYPE_DATA ? "application" :
2446  par->codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
2447  port, payload_type);
2448  av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
2450 
2451  ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
2452  s->pb = &pb;
2453 
2454  /* sdp_read_header initializes this again */
2455  ff_network_close();
2456 
2457  rt->media_type_mask = (1 << (AVMEDIA_TYPE_SUBTITLE+1)) - 1;
2458 
2459  ret = sdp_read_header(s);
2460  s->pb = NULL;
2461  return ret;
2462 
2463 fail:
2465  if (in)
2466  ffurl_close(in);
2467  ff_network_close();
2468  return ret;
2469 }
2470 
2471 static const AVClass rtp_demuxer_class = {
2472  .class_name = "RTP demuxer",
2473  .item_name = av_default_item_name,
2474  .option = rtp_options,
2475  .version = LIBAVUTIL_VERSION_INT,
2476 };
2477 
2478 AVInputFormat ff_rtp_demuxer = {
2479  .name = "rtp",
2480  .long_name = NULL_IF_CONFIG_SMALL("RTP input"),
2481  .priv_data_size = sizeof(RTSPState),
2482  .read_probe = rtp_probe,
2483  .read_header = rtp_read_header,
2485  .read_close = sdp_read_close,
2486  .flags = AVFMT_NOFILE,
2487  .priv_class = &rtp_demuxer_class,
2488 };
2489 #endif /* CONFIG_RTP_DEMUXER */
char auth[128]
plaintext authorization line (username:password)
Definition: rtsp.h:273
int interleaved_min
interleave ids, if TCP transport; each TCP/RTSP data packet starts with a '$', stream length and stre...
Definition: rtsp.h:93
void av_url_split(char *proto, int proto_size, char *authorization, int authorization_size, char *hostname, int hostname_size, int *port_ptr, char *path, int path_size, const char *url)
Split a URL string into components.
Definition: utils.c:4285
char crypto_suite[40]
Definition: rtsp.h:472
void ff_rtsp_skip_packet(AVFormatContext *s)
Skip a RTP/TCP interleaved packet.
int rtp_port_min
Minimum and maximum local UDP ports.
Definition: rtsp.h:387
#define NULL
Definition: coverity.c:32
int ff_wms_parse_sdp_a_line(AVFormatContext *s, const char *p)
Parse a Windows Media Server-specific SDP line.
Definition: rtpdec_asf.c:100
void ff_rtp_parse_set_crypto(RTPDemuxContext *s, const char *suite, const char *params)
Definition: rtpdec.c:552
const char * s
Definition: avisynth_c.h:631
Bytestream IO Context.
Definition: avio.h:111
Realmedia Data Transport.
Definition: rtsp.h:58
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
int ff_rtp_get_local_rtp_port(URLContext *h)
Return the local rtp port used by the RTP connection.
Definition: rtpproto.c:573
int64_t start_time_realtime
Start time of the stream in real world time, in microseconds since the Unix epoch (00:00 1st January ...
Definition: avformat.h:1546
int ffurl_open_whitelist(URLContext **puc, const char *filename, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options, const char *whitelist, const char *blacklist, URLContext *parent)
Create an URLContext for accessing to the resource indicated by url, and open it. ...
Definition: avio.c:309
#define RTP_MAX_PACKET_LENGTH
Definition: rtpdec.h:36
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1571
AVOption.
Definition: opt.h:245
char source[INET6_ADDRSTRLEN+1]
source IP address
Definition: rtsp.h:115
HTTPAuthType
Authentication types, ordered from weakest to strongest.
Definition: httpauth.h:28
char content_type[64]
Content type header.
Definition: rtsp.h:187
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:70
const char * filename
Definition: avformat.h:460
static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
Parse a string p in the form of Range:npt=xx-xx, and determine the start and end time.
Definition: rtsp.c:165
char control_uri[1024]
some MS RTSP streams contain a URL in the SDP that we need to use for all subsequent RTSP requests...
Definition: rtsp.h:317
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4405
int av_parse_time(int64_t *timeval, const char *timestr, int duration)
Parse timestr and return in *time a corresponding number of microseconds.
Definition: parseutils.c:559
int ffurl_write(URLContext *h, const unsigned char *buf, int size)
Write size bytes from buf to the resource accessed by h.
Definition: avio.c:421
#define RTSP_DEFAULT_PORT
Definition: rtsp.h:72
Windows Media server.
Definition: rtsp.h:209
struct pollfd * p
Polling array for udp.
Definition: rtsp.h:354
int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
Open RTSP transport context.
Definition: rtsp.c:792
MpegTSContext * avpriv_mpegts_parse_open(AVFormatContext *s)
Definition: mpegts.c:2818
int ffurl_connect(URLContext *uc, AVDictionary **options)
Connect an URLContext that has been allocated by ffurl_alloc.
Definition: avio.c:166
static int parse_fmtp(AVFormatContext *s, AVStream *stream, PayloadContext *data, const char *attr, const char *value)
Definition: rtpdec_latm.c:131
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3915
int ff_rdt_parse_packet(RDTDemuxContext *s, AVPacket *pkt, uint8_t **bufptr, int len)
Parse RDT-style packet data (header + media data).
Definition: rdt.c:335
int num
numerator
Definition: rational.h:44
int index
stream index in AVFormatContext
Definition: avformat.h:877
#define AVIO_FLAG_READ
read-only
Definition: avio.h:542
char * user_agent
User-Agent string.
Definition: rtsp.h:407
char location[4096]
the "Location:" field.
Definition: rtsp.h:152
#define AVIO_FLAG_WRITE
write-only
Definition: avio.h:543
int mode_record
transport set to record data
Definition: rtsp.h:112
enum AVMediaType codec_type
Definition: rtp.c:37
int av_strncasecmp(const char *a, const char *b, size_t n)
Locale-independent case-insensitive compare.
Definition: avstring.c:223
void ff_network_close(void)
Definition: network.c:102
UDP/unicast.
Definition: rtsp.h:38
int seq
sequence number
Definition: rtsp.h:144
initialized and sending/receiving data
Definition: rtsp.h:197
char real_challenge[64]
the "RealChallenge1:" field from the server
Definition: rtsp.h:270
#define RTSP_FLAG_RTCP_TO_SOURCE
Send RTCP packets to the source address of received packets.
Definition: rtsp.h:420
#define RTSP_RTP_PORT_MAX
Definition: rtsp.h:79
#define freeaddrinfo
Definition: network.h:208
static AVPacket pkt
int nb_include_source_addrs
Number of source-specific multicast include source IP addresses (from SDP content) ...
Definition: rtsp.h:452
int ctx_flags
Flags signalling stream properties.
Definition: avformat.h:1368
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
Definition: bytestream.h:87
#define RTSP_FLAG_LISTEN
Wait for incoming connections.
Definition: rtsp.h:418
char session_id[512]
copy of RTSPMessageHeader->session_id, i.e.
Definition: rtsp.h:245
int auth_type
The currently chosen auth type.
Definition: httpauth.h:59
int64_t seek_timestamp
the seek value requested when calling av_seek_frame().
Definition: rtsp.h:239
const char * ff_rtp_enc_name(int payload_type)
Return the encoding name (as defined in http://www.iana.org/assignments/rtp-parameters) for a given p...
Definition: rtp.c:132
AVCodec.
Definition: avcodec.h:3535
#define AI_NUMERICHOST
Definition: network.h:177
This struct describes the properties of an encoded stream.
Definition: avcodec.h:3907
int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port, int lower_transport, const char *real_challenge)
Do the SETUP requests for each stream for the chosen lower transport mode.
enum RTSPLowerTransport lower_transport
network layer transport protocol; e.g.
Definition: rtsp.h:121
This describes the server response to each RTSP command.
Definition: rtsp.h:127
RTPDemuxContext * ff_rtp_parse_open(AVFormatContext *s1, AVStream *st, int payload_type, int queue_size)
open a new RTP parse context for stream 'st'.
Definition: rtpdec.c:509
#define RECVBUF_SIZE
Definition: rtsp.c:59
RTSPTransportField transports[RTSP_MAX_TRANSPORTS]
describes the complete "Transport:" line of the server in response to a SETUP RTSP command by the cli...
Definition: rtsp.h:142
Format I/O context.
Definition: avformat.h:1319
#define RTP_PT_PRIVATE
Definition: rtp.h:77
#define COMMON_OPTS()
Definition: rtsp.c:77
enum AVCodecID ff_rtp_codec_id(const char *buf, enum AVMediaType codec_type)
Return the codec id for the given encoding name and codec type.
Definition: rtp.c:143
int ff_rtsp_connect(AVFormatContext *s)
Connect to the RTSP server and set up the individual media streams.
Standards-compliant RTP-server.
Definition: rtsp.h:207
int reordering_queue_size
Size of RTP packet reordering queue.
Definition: rtsp.h:402
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
#define RTSP_FLAG_PREFER_TCP
Try RTP via TCP first if possible.
Definition: rtsp.h:423
int recvbuf_len
Definition: rtsp.h:323
uint64_t first_rtcp_ntp_time
Definition: rtpdec.h:180
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
Public dictionary API.
int av_stristart(const char *str, const char *pfx, const char **ptr)
Return non-zero if pfx is a prefix of str independent of case.
Definition: avstring.c:45
int get_parameter_supported
Whether the server supports the GET_PARAMETER method.
Definition: rtsp.h:359
Standards-compliant RTP.
Definition: rtsp.h:57
uint8_t
char session_id[512]
the "Session:" field.
Definition: rtsp.h:148
#define RTSP_MAX_TRANSPORTS
Definition: rtsp.h:74
#define av_malloc(s)
Opaque data information usually continuous.
Definition: avutil.h:195
int ttl
time-to-live value (required for multicast); the amount of HOPs that packets will be allowed to make ...
Definition: rtsp.h:109
int(* init)(AVFormatContext *s, int st_index, PayloadContext *priv_data)
Initialize dynamic protocol handler, called after the full rtpmap line is parsed, may be null...
Definition: rtpdec.h:126
static int get_sockaddr(AVFormatContext *s, const char *buf, struct sockaddr_storage *sock)
Definition: rtsp.c:187
int ff_network_init(void)
Definition: network.c:55
#define AVFMTCTX_NOHEADER
signal that no header is present (streams are added dynamically)
Definition: avformat.h:1278
AVOptions.
AVCodecParameters * avcodec_parameters_alloc(void)
Allocate a new AVCodecParameters and set its fields to default values (unknown/invalid/0).
Definition: utils.c:4031
miscellaneous OS support macros and functions.
int feedback
Enable sending RTCP feedback messages according to RFC 4585.
Definition: rtsp.h:470
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:202
uint16_t ss_family
Definition: network.h:106
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
int id
Format-specific stream ID.
Definition: avformat.h:883
enum AVStreamParseType need_parsing
Definition: avformat.h:1074
#define POLL_TIMEOUT_MS
Definition: rtsp.c:55
#define DEFAULT_REORDERING_DELAY
Definition: rtsp.c:60
static void handler(vbi_event *ev, void *user_data)
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4043
int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, char *value, int value_size)
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:87
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1387
int accept_dynamic_rate
Whether the server accepts the x-Dynamic-Rate header.
Definition: rtsp.h:372
URLContext * rtsp_hd_out
Additional output handle, used when input and output are done separately, eg for HTTP tunneling...
Definition: rtsp.h:328
int ff_rtp_get_codec_info(AVCodecParameters *par, int payload_type)
Initialize a codec context based on the payload type.
Definition: rtp.c:71
Describe a single stream, as identified by a single m= line block in the SDP content.
Definition: rtsp.h:435
Custom IO - not a public option for lower_transport_mask, but set in the SDP demuxer based on a flag...
Definition: rtsp.h:45
char * protocol_whitelist
',' separated list of allowed protocols.
Definition: avformat.h:1855
void(* close)(PayloadContext *protocol_data)
Free any data needed by the rtp parsing for this dynamic data.
Definition: rtpdec.h:133
enum RTSPStatusCode status_code
response code from server
Definition: rtsp.h:131
#define AVERROR_EOF
End of file.
Definition: error.h:55
void ff_http_init_auth_state(URLContext *dest, const URLContext *src)
Initialize the authentication state based on another HTTP URLContext.
Definition: http.c:166
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
ptrdiff_t size
Definition: opengl_enc.c:101
static const uint8_t header[24]
Definition: sdr2.c:67
int ff_rtsp_parse_streaming_commands(AVFormatContext *s)
Parse RTSP commands (OPTIONS, PAUSE and TEARDOWN) during streaming in listen mode.
Definition: rtspdec.c:465
int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url, const char *headers, RTSPMessageHeader *reply, unsigned char **content_ptr)
Send a command to the RTSP server and wait for the reply.
Normal RTSP.
Definition: rtsp.h:68
const OptionDef options[]
Definition: ffserver.c:3967
static int ff_rtsp_averror(enum RTSPStatusCode status_code, int default_averror)
Definition: rtspcodes.h:144
#define av_log(a,...)
int nb_transports
number of items in the 'transports' variable below
Definition: rtsp.h:134
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:550
void ff_rtsp_parse_line(AVFormatContext *s, RTSPMessageHeader *reply, const char *buf, RTSPState *rt, const char *method)
struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1338
int notice
The "Notice" or "X-Notice" field value.
Definition: rtsp.h:177
#define RTSP_DEFAULT_AUDIO_SAMPLERATE
Definition: rtsp.h:77
void ff_rdt_parse_close(RDTDemuxContext *s)
Definition: rdt.c:78
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
int ff_sdp_parse(AVFormatContext *s, const char *content)
Parse an SDP description of streams by populating an RTSPState struct within the AVFormatContext; als...
struct RTSPSource ** exclude_source_addrs
Source-specific multicast exclude source IP addresses (from SDP content)
Definition: rtsp.h:455
Private data for the RTSP demuxer.
Definition: rtsp.h:218
int64_t last_cmd_time
timestamp of the last RTSP command that we sent to the RTSP server.
Definition: rtsp.h:255
int ffurl_alloc(URLContext **puc, const char *filename, int flags, const AVIOInterruptCB *int_cb)
Create a URLContext for accessing to the resource indicated by url, but do not initiate the connectio...
Definition: avio.c:292
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1533
int ffurl_get_multi_file_handle(URLContext *h, int **handles, int *numhandles)
Return the file descriptors associated with this URL.
Definition: avio.c:633
int timeout
copy of RTSPMessageHeader->timeout, i.e.
Definition: rtsp.h:250
av_default_item_name
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
const AVOption ff_rtsp_options[]
Definition: rtsp.c:82
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:202
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3911
char reason[256]
The "reason" is meant to specify better the meaning of the error code returned.
Definition: rtsp.h:182
Definition: graph2dot.c:48
URLContext * rtsp_hd
Definition: rtsp.h:220
simple assert() macros that are a bit more flexible than ISO C assert().
const char * name
Name of the codec implementation.
Definition: avcodec.h:3542
enum RTSPControlTransport control_transport
RTSP transport mode, such as plain or tunneled.
Definition: rtsp.h:331
struct RTSPSource ** include_source_addrs
Source-specific multicast include source IP addresses (from SDP content)
Definition: rtsp.h:453
int ffio_read_partial(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:619
GLsizei count
Definition: opengl_enc.c:109
char * av_base64_encode(char *out, int out_size, const uint8_t *in, int in_size)
Encode data to base64 and null-terminate.
Definition: base64.c:138
void avcodec_parameters_free(AVCodecParameters **par)
Free an AVCodecParameters instance and everything associated with it and write NULL to the supplied p...
Definition: utils.c:4041
int64_t rtcp_ts_offset
Definition: rtpdec.h:182
size_t av_strlcpy(char *dst, const char *src, size_t size)
Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.
Definition: avstring.c:83
#define fail()
Definition: checkasm.h:81
RTPDynamicProtocolHandler * ff_rtp_handler_find_by_id(int id, enum AVMediaType codec_type)
Definition: rtpdec.c:132
struct RTSPStream ** rtsp_streams
streams in this session
Definition: rtsp.h:225
char server[64]
the "Server: field, which can be used to identify some special-case servers that are not 100% standar...
Definition: rtsp.h:164
int stream_index
corresponding stream index, if any.
Definition: rtsp.h:440
int buf_size
Size of buf except extra allocated bytes.
Definition: avformat.h:462
int seq
RTSP command sequence number.
Definition: rtsp.h:241
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:461
uint8_t * recvbuf
Reusable buffer for receiving packets.
Definition: rtsp.h:339
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1375
#define RTSP_FLAG_CUSTOM_IO
Do all IO via the AVIOContext.
Definition: rtsp.h:419
#define NI_NUMERICHOST
Definition: network.h:185
#define th
Definition: regdef.h:75
#define LIBAVFORMAT_IDENT
Definition: version.h:44
AVFormatContext * asf_ctx
The following are used for RTP/ASF streams.
Definition: rtsp.h:307
int recvbuf_pos
Definition: rtsp.h:322
#define dynarray_add(tab, nb_ptr, elem)
Definition: internal.h:166
char filename[1024]
input or output filename
Definition: avformat.h:1395
int nb_rtsp_streams
number of items in the 'rtsp_streams' variable
Definition: rtsp.h:223
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:129
#define AV_BASE64_SIZE(x)
Calculate the output size needed to base64-encode x bytes to a null-terminated string.
Definition: base64.h:66
#define FFMIN(a, b)
Definition: common.h:96
void * cur_transport_priv
RTSPStream->transport_priv of the last stream that we read a packet from.
Definition: rtsp.h:283
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
Definition: avstring.c:213
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:55
int content_length
length of the data following this header
Definition: rtsp.h:129
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
int timeout
The "timeout" comes as part of the server response to the "SETUP" command, in the "Session: <xyz>[;ti...
Definition: rtsp.h:172
#define RTSP_TCP_MAX_PACKET_SIZE
Definition: rtsp.h:75
enum AVStreamParseType need_parsing
Definition: rtpdec.h:119
HTTP tunneled - not a proper transport mode as such, only for use via AVOptions.
Definition: rtsp.h:42
This describes a single item in the "Transport:" line of one stream as negotiated by the SETUP RTSP c...
Definition: rtsp.h:88
RTSP over HTTP (tunneling)
Definition: rtsp.h:69
static void get_word_until_chars(char *buf, int buf_size, const char *sep, const char **pp)
Definition: rtsp.c:130
int ff_rtsp_tcp_write_packet(AVFormatContext *s, RTSPStream *rtsp_st)
Send buffered packets over TCP.
Definition: rtspenc.c:140
static void get_word(char *buf, int buf_size, const char **pp)
Definition: rtsp.c:156
int n
Definition: avisynth_c.h:547
AVDictionary * metadata
Definition: avformat.h:945
char crypto_params[100]
Definition: rtsp.h:473
Usually treated as AVMEDIA_TYPE_DATA.
Definition: avutil.h:192
int(* parse_sdp_a_line)(AVFormatContext *s, int st_index, PayloadContext *priv_data, const char *line)
Parse the a= line from the sdp field.
Definition: rtpdec.h:128
int ffurl_get_file_handle(URLContext *h)
Return the file descriptor associated with this URL.
Definition: avio.c:626
#define AVERROR_EXIT
Immediate exit was requested; the called function should not be restarted.
Definition: error.h:56
#define ENC
Definition: rtsp.c:64
int sdp_port
The following are used only in SDP, not RTSP.
Definition: rtsp.h:450
Raw data (over UDP)
Definition: rtsp.h:59
struct MpegTSContext * ts
The following are used for parsing raw mpegts in udp.
Definition: rtsp.h:321
int stale
Auth ok, but needs to be resent with a new nonce.
Definition: httpauth.h:71
const uint8_t ff_log2_tab[256]
Definition: log2_tab.c:23
int sdp_payload_type
payload type
Definition: rtsp.h:457
void ff_rtp_parse_set_dynamic_protocol(RTPDemuxContext *s, PayloadContext *ctx, RTPDynamicProtocolHandler *handler)
Definition: rtpdec.c:545
int nb_exclude_source_addrs
Number of source-specific multicast exclude source IP addresses (from SDP content) ...
Definition: rtsp.h:454
void ffio_free_dyn_buf(AVIOContext **s)
Free a dynamic buffer.
Definition: aviobuf.c:1252
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:638
int ff_rtp_send_rtcp_feedback(RTPDemuxContext *s, URLContext *fd, AVIOContext *avio)
Definition: rtpdec.c:441
Stream structure.
Definition: avformat.h:876
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
int ff_url_join(char *str, int size, const char *proto, const char *authorization, const char *hostname, int port, const char *fmt,...)
Definition: url.c:36
int nb_byes
Definition: rtsp.h:336
enum RTSPLowerTransport lower_transport
the negotiated network layer transport protocol; e.g.
Definition: rtsp.h:262
char addr[128]
Source-specific multicast include source IP address (from SDP content)
Definition: rtsp.h:426
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
struct sockaddr_storage sdp_ip
IP address (from SDP content)
Definition: rtsp.h:451
void ff_rtsp_undo_setup(AVFormatContext *s, int send_packets)
Undo the effect of ff_rtsp_make_setup_request, close the transport_priv and rtp_handle fields...
Definition: rtsp.c:722
int ff_check_interrupt(AVIOInterruptCB *cb)
Check if the user has requested to interrup a blocking function associated with cb.
Definition: avio.c:655
int rtp_port_max
Definition: rtsp.h:387
#define NTP_OFFSET
Definition: internal.h:204
Definition: rtp.h:100
AVIOContext * pb
I/O context.
Definition: avformat.h:1361
int media_type_mask
Mask of all requested media types.
Definition: rtsp.h:382
int server_port_max
Definition: rtsp.h:105
#define FF_RTP_FLAG_OPTS(ctx, fieldname)
Definition: rtpenc.h:74
AVCodec * avcodec_find_decoder(enum AVCodecID id)
Find a registered decoder with a matching codec ID.
Definition: utils.c:3056
#define RTSP_FLAG_OPTS(name, longname)
Definition: rtsp.c:66
RDTDemuxContext * ff_rdt_parse_open(AVFormatContext *ic, int first_stream_of_set_idx, void *priv_data, RTPDynamicProtocolHandler *handler)
Allocate and init the RDT parsing context.
Definition: rdt.c:55
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
#define RTSP_FLAG_FILTER_SRC
Filter incoming UDP packets - receive packets only from the right source address and port...
Definition: rtsp.h:413
enum AVCodecID codec_id
Definition: rtpdec.h:118
enum RTSPTransport transport
the negotiated data/packet transport protocol; e.g.
Definition: rtsp.h:258
void * buf
Definition: avisynth_c.h:553
Definition: url.h:38
#define RTSPS_DEFAULT_PORT
Definition: rtsp.h:73
int ff_rtsp_setup_output_streams(AVFormatContext *s, const char *addr)
Announce the stream to the server and set up the RTSPStream child objects for each media stream...
Definition: rtspenc.c:46
#define AVIO_FLAG_READ_WRITE
read-write pseudo flag
Definition: avio.h:544
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:69
int rtsp_flags
Various option flags for the RTSP muxer/demuxer.
Definition: rtsp.h:377
int client_port_max
Definition: rtsp.h:101
Describe the class of an AVClass context structure.
Definition: log.h:67
#define SDP_MAX_SIZE
Definition: rtsp.c:58
void ff_real_parse_sdp_a_line(AVFormatContext *s, int stream_index, const char *line)
Parse a server-related SDP line.
Definition: rdt.c:515
#define SPACE_CHARS
Definition: internal.h:270
void * priv_data
Definition: url.h:41
PayloadContext * dynamic_protocol_context
private data associated with the dynamic protocol
Definition: rtsp.h:466
char last_reply[2048]
The last reply of the server to a RTSP command.
Definition: rtsp.h:279
#define gai_strerror
Definition: network.h:215
not initialized
Definition: rtsp.h:196
int64_t range_end
Definition: rtsp.h:138
enum RTSPTransport transport
data/packet transport protocol; e.g.
Definition: rtsp.h:118
int avpriv_mpegts_parse_packet(MpegTSContext *ts, AVPacket *pkt, const uint8_t *buf, int len)
Definition: mpegts.c:2837
char real_challenge[64]
the "RealChallenge1:" field from the server
Definition: rtsp.h:155
AVMediaType
Definition: avutil.h:191
size_t av_strlcatf(char *dst, size_t size, const char *fmt,...)
Definition: avstring.c:101
#define RTSP_MEDIATYPE_OPTS(name, longname)
Definition: rtsp.c:70
int64_t ff_rtp_queued_packet_time(RTPDemuxContext *s)
Definition: rtpdec.c:726
int ff_rtsp_tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st, uint8_t *buf, int buf_size)
Receive one RTP packet from an TCP interleaved RTSP stream.
Definition: rtspdec.c:752
void ff_rtsp_close_streams(AVFormatContext *s)
Close and free all streams within the RTSP (de)muxer.
Definition: rtsp.c:756
int ff_rtp_check_and_send_back_rr(RTPDemuxContext *s, URLContext *fd, AVIOContext *avio, int count)
some rtp servers assume client is dead if they don't hear from them...
Definition: rtpdec.c:270
#define s1
Definition: regdef.h:38
#define snprintf
Definition: snprintf.h:34
#define AVPROBE_SCORE_EXTENSION
score for file extension
Definition: avformat.h:469
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:3979
int buffer_size
Definition: rtsp.h:410
This structure contains the data a format has to probe a file.
Definition: avformat.h:459
#define RTSP_DEFAULT_NB_AUDIO_CHANNELS
Definition: rtsp.h:76
misc parsing utilities
char * ff_http_auth_create_response(HTTPAuthState *state, const char *auth, const char *path, const char *method)
Definition: httpauth.c:245
static void interleave(short *output, short **input, int channels, int samples)
Definition: resample.c:161
size_t av_strlcat(char *dst, const char *src, size_t size)
Append the string src to the string dst, but to a total length of no more than size - 1 bytes...
Definition: avstring.c:93
int interleaved_max
Definition: rtsp.h:93
#define RTP_PT_IS_RTCP(x)
Definition: rtp.h:110
mfxU16 profile
Definition: qsvenc.c:42
int64_t av_gettime_relative(void)
Get the current time in microseconds since some unspecified starting point.
Definition: time.c:56
enum RTSPServerType server_type
brand of server that we're talking to; e.g.
Definition: rtsp.h:267
static int flags
Definition: cpu.c:47
int ffurl_close(URLContext *h)
Definition: avio.c:467
int64_t range_start
Time range of the streams that the server will stream.
Definition: rtsp.h:138
int64_t start_time
Position of the first frame of the component, in AV_TIME_BASE fractional seconds. ...
Definition: avformat.h:1404
enum RTSPClientState state
indicator of whether we are currently receiving data from the server.
Definition: rtsp.h:231
int sample_rate
Audio only.
Definition: avcodec.h:4025
#define DEC
Definition: rtsp.c:63
int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
Receive one packet from the RTSPStreams set up in the AVFormatContext (which should contain a RTSPSta...
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:471
int av_strstart(const char *str, const char *pfx, const char **ptr)
Return non-zero if pfx is a prefix of str.
Definition: avstring.c:34
int ff_rtsp_send_cmd_with_content(AVFormatContext *s, const char *method, const char *url, const char *headers, RTSPMessageHeader *reply, unsigned char **content_ptr, const unsigned char *send_content, int send_content_length)
Send a command to the RTSP server and wait for the reply.
#define getaddrinfo
Definition: network.h:207
Main libavformat public API header.
static const AVOption sdp_options[]
Definition: rtsp.c:103
int ff_rtp_chain_mux_open(AVFormatContext **out, AVFormatContext *s, AVStream *st, URLContext *handle, int packet_size, int idx)
Definition: rtpenc_chain.c:28
uint32_t ssrc
Definition: rtpdec.h:153
static AVDictionary * map_to_opts(RTSPState *rt)
Definition: rtsp.c:119
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:476
RTPDynamicProtocolHandler * ff_rtp_handler_find_by_name(const char *name, enum AVMediaType codec_type)
Definition: rtpdec.c:119
int ffio_init_context(AVIOContext *s, unsigned char *buffer, int buffer_size, int write_flag, void *opaque, int(*read_packet)(void *opaque, uint8_t *buf, int buf_size), int(*write_packet)(void *opaque, uint8_t *buf, int buf_size), int64_t(*seek)(void *opaque, int64_t offset, int whence))
Definition: aviobuf.c:81
static double c[64]
int need_subscription
The following are used for Real stream selection.
Definition: rtsp.h:288
RTPDynamicProtocolHandler * dynamic_handler
The following are used for dynamic protocols (rtpdec_*.c/rdt.c)
Definition: rtsp.h:463
int ffurl_read_complete(URLContext *h, unsigned char *buf, int size)
Read as many bytes as possible (up to size), calling the read function multiple times if necessary...
Definition: avio.c:414
void ff_rdt_calc_response_and_checksum(char response[41], char chksum[9], const char *challenge)
Calculate the response (RealChallenge2 in the RTSP header) to the challenge (RealChallenge1 in the RT...
Definition: rdt.c:94
int den
denominator
Definition: rational.h:45
char default_lang[4]
Definition: rtsp.h:409
struct AVInputFormat * iformat
The input container format.
Definition: avformat.h:1331
void avformat_close_input(AVFormatContext **s)
Close an opened input AVFormatContext.
Definition: utils.c:4015
void ff_http_auth_handle_header(HTTPAuthState *state, const char *key, const char *value)
Definition: httpauth.c:90
uint32_t base_timestamp
Definition: rtpdec.h:156
int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply, unsigned char **content_ptr, int return_on_interleaved_data, const char *method)
Read a RTSP message from the server, or prepare to read data packets if we're reading data interleave...
int stimeout
timeout of socket i/o operations.
Definition: rtsp.h:397
#define getnameinfo
Definition: network.h:209
#define av_free(p)
int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method, const char *url, const char *headers)
Send a command to the RTSP server without waiting for the reply.
static void get_word_sep(char *buf, int buf_size, const char *sep, const char **pp)
Definition: rtsp.c:149
TCP; interleaved in RTSP.
Definition: rtsp.h:39
HTTPAuthState auth_state
authentication state
Definition: rtsp.h:276
int len
#define RTSP_RTP_PORT_MIN
Definition: rtsp.h:78
char control_url[1024]
url for this stream (from SDP)
Definition: rtsp.h:446
void * priv_data
Format private data.
Definition: avformat.h:1347
AVDictionary * opts
Definition: movenc-test.c:50
int ff_rtsp_setup_input_streams(AVFormatContext *s, RTSPMessageHeader *reply)
Get the description of the stream and set up the RTSPStream child objects.
Definition: rtspdec.c:594
void ff_rtp_parse_close(RTPDemuxContext *s)
Definition: rtpdec.c:853
int channels
Audio only.
Definition: avcodec.h:4021
int sdp_ttl
IP Time-To-Live (from SDP content)
Definition: rtsp.h:456
#define MAX_TIMEOUTS
Definition: rtsp.c:57
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
Definition: mux.c:1120
char * protocol_blacklist
',' separated list of disallowed protocols.
Definition: avformat.h:1890
int ai_flags
Definition: network.h:128
int64_t duration
Duration of the stream, in AV_TIME_BASE fractional seconds.
Definition: avformat.h:1414
Realmedia-style server.
Definition: rtsp.h:208
int lower_transport_mask
A mask with all requested transport methods.
Definition: rtsp.h:344
#define av_freep(p)
void INT64 start
Definition: avisynth_c.h:553
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:660
unbuffered private I/O API
uint32_t av_get_random_seed(void)
Get a seed to use in conjunction with random functions.
Definition: random_seed.c:114
AVCodecParameters * codecpar
Definition: avformat.h:1006
#define av_malloc_array(a, b)
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:913
int interleaved_max
Definition: rtsp.h:444
int ff_rtp_parse_packet(RTPDemuxContext *s, AVPacket *pkt, uint8_t **bufptr, int len)
Parse an RTP or RTCP packet directly sent as a buffer.
Definition: rtpdec.c:840
struct sockaddr_storage destination
destination IP address
Definition: rtsp.h:114
int ff_rtp_set_remote_url(URLContext *h, const char *uri)
If no filename is given to av_open_input_file because you want to get the local port first...
Definition: rtpproto.c:98
void avpriv_mpegts_parse_close(MpegTSContext *ts)
Definition: mpegts.c:2862
AVStream * st
Definition: rtpdec.h:151
#define RTP_REORDER_QUEUE_DEFAULT_SIZE
Definition: rtpdec.h:38
int interleaved_min
interleave IDs; copies of RTSPTransportField->interleaved_min/max for the selected transport...
Definition: rtsp.h:444
This structure stores compressed data.
Definition: avcodec.h:1554
int avio_closep(AVIOContext **s)
Close the resource accessed by the AVIOContext *s, free it and set the pointer pointing to it to NULL...
Definition: aviobuf.c:1038
int server_port_min
UDP unicast server port range; the ports to which we should connect to receive unicast UDP RTP/RTCP d...
Definition: rtsp.h:105
void ff_rtsp_close_connections(AVFormatContext *s)
Close all connection handles within the RTSP (de)muxer.
int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
Definition: opt.c:431
static const AVOption rtp_options[]
Definition: rtsp.c:112
int ffurl_read(URLContext *h, unsigned char *buf, int size)
Read up to size bytes from the resource accessed by h, and store the read bytes in buf...
Definition: avio.c:407
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:252
URLContext * rtp_handle
RTP stream handle (if UDP)
Definition: rtsp.h:436
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:240
#define OFFSET(x)
Definition: rtsp.c:62
int port_min
UDP multicast port range; the ports to which we should connect to receive multicast UDP data...
Definition: rtsp.h:97
void * transport_priv
RTP/RDT parse context if input, RTP AVFormatContext if output.
Definition: rtsp.h:437
No authentication specified.
Definition: httpauth.h:29
int client_port_min
UDP client ports; these should be the local ports of the UDP RTP (and RTCP) sockets over which we rec...
Definition: rtsp.h:101
const char * name
Definition: opengl_enc.c:103