FFmpeg
rtsp.c
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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  { "pkt_size", "Underlying protocol send packet size", OFFSET(pkt_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, ENC } \
81 
82 
84  { "initial_pause", "do not start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, DEC },
85  FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags),
86  { "rtsp_transport", "set RTSP transport protocols", OFFSET(lower_transport_mask), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, DEC|ENC, "rtsp_transport" }, \
87  { "udp", "UDP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
88  { "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
89  { "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, "rtsp_transport" },
90  { "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {.i64 = (1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, "rtsp_transport" },
91  { "https", "HTTPS tunneling", 0, AV_OPT_TYPE_CONST, {.i64 = (1 << RTSP_LOWER_TRANSPORT_HTTPS )}, 0, 0, DEC, "rtsp_transport" },
92  RTSP_FLAG_OPTS("rtsp_flags", "set RTSP flags"),
93  { "listen", "wait for incoming connections", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_LISTEN}, 0, 0, DEC, "rtsp_flags" },
94  { "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" },
95  RTSP_MEDIATYPE_OPTS("allowed_media_types", "set media types to accept from the server"),
96  { "min_port", "set minimum local UDP port", OFFSET(rtp_port_min), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MIN}, 0, 65535, DEC|ENC },
97  { "max_port", "set maximum local UDP port", OFFSET(rtp_port_max), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MAX}, 0, 65535, DEC|ENC },
98  { "listen_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 },
99 #if FF_API_OLD_RTSP_OPTIONS
100  { "timeout", "set maximum timeout (in seconds) to wait for incoming connections (-1 is infinite, imply flag listen) (deprecated, use listen_timeout)", OFFSET(initial_timeout), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, DEC },
101  { "stimeout", "set timeout (in microseconds) of socket TCP I/O operations", OFFSET(stimeout), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, DEC },
102 #else
103  { "timeout", "set timeout (in microseconds) of socket TCP I/O operations", OFFSET(stimeout), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, DEC },
104 #endif
105  COMMON_OPTS(),
106  { "user_agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = LIBAVFORMAT_IDENT}, 0, 0, DEC },
107 #if FF_API_OLD_RTSP_OPTIONS
108  { "user-agent", "override User-Agent header (deprecated, use user_agent)", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = LIBAVFORMAT_IDENT}, 0, 0, DEC },
109 #endif
110  { NULL },
111 };
112 
113 static const AVOption sdp_options[] = {
114  RTSP_FLAG_OPTS("sdp_flags", "SDP flags"),
115  { "custom_io", "use custom I/O", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_CUSTOM_IO}, 0, 0, DEC, "rtsp_flags" },
116  { "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" },
117  RTSP_MEDIATYPE_OPTS("allowed_media_types", "set media types to accept from the server"),
118  COMMON_OPTS(),
119  { NULL },
120 };
121 
122 static const AVOption rtp_options[] = {
123  RTSP_FLAG_OPTS("rtp_flags", "set RTP flags"),
124  COMMON_OPTS(),
125  { NULL },
126 };
127 
128 
130 {
132  char buf[256];
133 
134  snprintf(buf, sizeof(buf), "%d", rt->buffer_size);
135  av_dict_set(&opts, "buffer_size", buf, 0);
136  snprintf(buf, sizeof(buf), "%d", rt->pkt_size);
137  av_dict_set(&opts, "pkt_size", buf, 0);
138 
139  return opts;
140 }
141 
142 static void get_word_until_chars(char *buf, int buf_size,
143  const char *sep, const char **pp)
144 {
145  const char *p;
146  char *q;
147 
148  p = *pp;
149  p += strspn(p, SPACE_CHARS);
150  q = buf;
151  while (!strchr(sep, *p) && *p != '\0') {
152  if ((q - buf) < buf_size - 1)
153  *q++ = *p;
154  p++;
155  }
156  if (buf_size > 0)
157  *q = '\0';
158  *pp = p;
159 }
160 
161 static void get_word_sep(char *buf, int buf_size, const char *sep,
162  const char **pp)
163 {
164  if (**pp == '/') (*pp)++;
165  get_word_until_chars(buf, buf_size, sep, pp);
166 }
167 
168 static void get_word(char *buf, int buf_size, const char **pp)
169 {
170  get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
171 }
172 
173 /** Parse a string p in the form of Range:npt=xx-xx, and determine the start
174  * and end time.
175  * Used for seeking in the rtp stream.
176  */
177 static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
178 {
179  char buf[256];
180 
181  p += strspn(p, SPACE_CHARS);
182  if (!av_stristart(p, "npt=", &p))
183  return;
184 
185  *start = AV_NOPTS_VALUE;
186  *end = AV_NOPTS_VALUE;
187 
188  get_word_sep(buf, sizeof(buf), "-", &p);
189  if (av_parse_time(start, buf, 1) < 0)
190  return;
191  if (*p == '-') {
192  p++;
193  get_word_sep(buf, sizeof(buf), "-", &p);
194  if (av_parse_time(end, buf, 1) < 0)
195  av_log(NULL, AV_LOG_DEBUG, "Failed to parse interval end specification '%s'\n", buf);
196  }
197 }
198 
200  const char *buf, struct sockaddr_storage *sock)
201 {
202  struct addrinfo hints = { 0 }, *ai = NULL;
203  int ret;
204 
205  hints.ai_flags = AI_NUMERICHOST;
206  if ((ret = getaddrinfo(buf, NULL, &hints, &ai))) {
207  av_log(s, AV_LOG_ERROR, "getaddrinfo(%s): %s\n",
208  buf,
209  gai_strerror(ret));
210  return -1;
211  }
212  memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
213  freeaddrinfo(ai);
214  return 0;
215 }
216 
217 #if CONFIG_RTPDEC
218 static void init_rtp_handler(const RTPDynamicProtocolHandler *handler,
219  RTSPStream *rtsp_st, AVStream *st)
220 {
221  AVCodecParameters *par = st ? st->codecpar : NULL;
222  if (!handler)
223  return;
224  if (par)
225  par->codec_id = handler->codec_id;
226  rtsp_st->dynamic_handler = handler;
227  if (st)
228  st->need_parsing = handler->need_parsing;
229  if (handler->priv_data_size) {
231  if (!rtsp_st->dynamic_protocol_context)
232  rtsp_st->dynamic_handler = NULL;
233  }
234 }
235 
236 static void finalize_rtp_handler_init(AVFormatContext *s, RTSPStream *rtsp_st,
237  AVStream *st)
238 {
239  if (rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->init) {
240  int ret = rtsp_st->dynamic_handler->init(s, st ? st->index : -1,
241  rtsp_st->dynamic_protocol_context);
242  if (ret < 0) {
243  if (rtsp_st->dynamic_protocol_context) {
244  if (rtsp_st->dynamic_handler->close)
245  rtsp_st->dynamic_handler->close(
246  rtsp_st->dynamic_protocol_context);
248  }
249  rtsp_st->dynamic_protocol_context = NULL;
250  rtsp_st->dynamic_handler = NULL;
251  }
252  }
253 }
254 
255 /* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
256 static int sdp_parse_rtpmap(AVFormatContext *s,
257  AVStream *st, RTSPStream *rtsp_st,
258  int payload_type, const char *p)
259 {
260  AVCodecParameters *par = st->codecpar;
261  char buf[256];
262  int i;
263  const AVCodecDescriptor *desc;
264  const char *c_name;
265 
266  /* See if we can handle this kind of payload.
267  * The space should normally not be there but some Real streams or
268  * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
269  * have a trailing space. */
270  get_word_sep(buf, sizeof(buf), "/ ", &p);
271  if (payload_type < RTP_PT_PRIVATE) {
272  /* We are in a standard case
273  * (from http://www.iana.org/assignments/rtp-parameters). */
274  par->codec_id = ff_rtp_codec_id(buf, par->codec_type);
275  }
276 
277  if (par->codec_id == AV_CODEC_ID_NONE) {
278  const RTPDynamicProtocolHandler *handler =
280  init_rtp_handler(handler, rtsp_st, st);
281  /* If no dynamic handler was found, check with the list of standard
282  * allocated types, if such a stream for some reason happens to
283  * use a private payload type. This isn't handled in rtpdec.c, since
284  * the format name from the rtpmap line never is passed into rtpdec. */
285  if (!rtsp_st->dynamic_handler)
286  par->codec_id = ff_rtp_codec_id(buf, par->codec_type);
287  }
288 
289  desc = avcodec_descriptor_get(par->codec_id);
290  if (desc && desc->name)
291  c_name = desc->name;
292  else
293  c_name = "(null)";
294 
295  get_word_sep(buf, sizeof(buf), "/", &p);
296  i = atoi(buf);
297  switch (par->codec_type) {
298  case AVMEDIA_TYPE_AUDIO:
299  av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
302  if (i > 0) {
303  par->sample_rate = i;
304  avpriv_set_pts_info(st, 32, 1, par->sample_rate);
305  get_word_sep(buf, sizeof(buf), "/", &p);
306  i = atoi(buf);
307  if (i > 0)
308  par->channels = i;
309  }
310  av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
311  par->sample_rate);
312  av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
313  par->channels);
314  break;
315  case AVMEDIA_TYPE_VIDEO:
316  av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
317  if (i > 0)
318  avpriv_set_pts_info(st, 32, 1, i);
319  break;
320  default:
321  break;
322  }
323  finalize_rtp_handler_init(s, rtsp_st, st);
324  return 0;
325 }
326 
327 /* parse the attribute line from the fmtp a line of an sdp response. This
328  * is broken out as a function because it is used in rtp_h264.c, which is
329  * forthcoming. */
330 int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
331  char *value, int value_size)
332 {
333  *p += strspn(*p, SPACE_CHARS);
334  if (**p) {
335  get_word_sep(attr, attr_size, "=", p);
336  if (**p == '=')
337  (*p)++;
338  get_word_sep(value, value_size, ";", p);
339  if (**p == ';')
340  (*p)++;
341  return 1;
342  }
343  return 0;
344 }
345 
346 typedef struct SDPParseState {
347  /* SDP only */
348  struct sockaddr_storage default_ip;
349  int default_ttl;
350  int skip_media; ///< set if an unknown m= line occurs
351  int nb_default_include_source_addrs; /**< Number of source-specific multicast include source IP address (from SDP content) */
352  struct RTSPSource **default_include_source_addrs; /**< Source-specific multicast include source IP address (from SDP content) */
353  int nb_default_exclude_source_addrs; /**< Number of source-specific multicast exclude source IP address (from SDP content) */
354  struct RTSPSource **default_exclude_source_addrs; /**< Source-specific multicast exclude source IP address (from SDP content) */
355  int seen_rtpmap;
356  int seen_fmtp;
357  char delayed_fmtp[2048];
358 } SDPParseState;
359 
360 static void copy_default_source_addrs(struct RTSPSource **addrs, int count,
361  struct RTSPSource ***dest, int *dest_count)
362 {
363  RTSPSource *rtsp_src, *rtsp_src2;
364  int i;
365  for (i = 0; i < count; i++) {
366  rtsp_src = addrs[i];
367  rtsp_src2 = av_malloc(sizeof(*rtsp_src2));
368  if (!rtsp_src2)
369  continue;
370  memcpy(rtsp_src2, rtsp_src, sizeof(*rtsp_src));
371  dynarray_add(dest, dest_count, rtsp_src2);
372  }
373 }
374 
375 static void parse_fmtp(AVFormatContext *s, RTSPState *rt,
376  int payload_type, const char *line)
377 {
378  int i;
379 
380  for (i = 0; i < rt->nb_rtsp_streams; i++) {
381  RTSPStream *rtsp_st = rt->rtsp_streams[i];
382  if (rtsp_st->sdp_payload_type == payload_type &&
383  rtsp_st->dynamic_handler &&
384  rtsp_st->dynamic_handler->parse_sdp_a_line) {
385  rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
386  rtsp_st->dynamic_protocol_context, line);
387  }
388  }
389 }
390 
391 static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
392  int letter, const char *buf)
393 {
394  RTSPState *rt = s->priv_data;
395  char buf1[64], st_type[64];
396  const char *p;
397  enum AVMediaType codec_type;
398  int payload_type;
399  AVStream *st;
400  RTSPStream *rtsp_st;
401  RTSPSource *rtsp_src;
402  struct sockaddr_storage sdp_ip;
403  int ttl;
404 
405  av_log(s, AV_LOG_TRACE, "sdp: %c='%s'\n", letter, buf);
406 
407  p = buf;
408  if (s1->skip_media && letter != 'm')
409  return;
410  switch (letter) {
411  case 'c':
412  get_word(buf1, sizeof(buf1), &p);
413  if (strcmp(buf1, "IN") != 0)
414  return;
415  get_word(buf1, sizeof(buf1), &p);
416  if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
417  return;
418  get_word_sep(buf1, sizeof(buf1), "/", &p);
419  if (get_sockaddr(s, buf1, &sdp_ip))
420  return;
421  ttl = 16;
422  if (*p == '/') {
423  p++;
424  get_word_sep(buf1, sizeof(buf1), "/", &p);
425  ttl = atoi(buf1);
426  }
427  if (s->nb_streams == 0) {
428  s1->default_ip = sdp_ip;
429  s1->default_ttl = ttl;
430  } else {
431  rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
432  rtsp_st->sdp_ip = sdp_ip;
433  rtsp_st->sdp_ttl = ttl;
434  }
435  break;
436  case 's':
437  av_dict_set(&s->metadata, "title", p, 0);
438  break;
439  case 'i':
440  if (s->nb_streams == 0) {
441  av_dict_set(&s->metadata, "comment", p, 0);
442  break;
443  }
444  break;
445  case 'm':
446  /* new stream */
447  s1->skip_media = 0;
448  s1->seen_fmtp = 0;
449  s1->seen_rtpmap = 0;
450  codec_type = AVMEDIA_TYPE_UNKNOWN;
451  get_word(st_type, sizeof(st_type), &p);
452  if (!strcmp(st_type, "audio")) {
453  codec_type = AVMEDIA_TYPE_AUDIO;
454  } else if (!strcmp(st_type, "video")) {
455  codec_type = AVMEDIA_TYPE_VIDEO;
456  } else if (!strcmp(st_type, "application")) {
457  codec_type = AVMEDIA_TYPE_DATA;
458  } else if (!strcmp(st_type, "text")) {
459  codec_type = AVMEDIA_TYPE_SUBTITLE;
460  }
461  if (codec_type == AVMEDIA_TYPE_UNKNOWN ||
462  !(rt->media_type_mask & (1 << codec_type)) ||
463  rt->nb_rtsp_streams >= s->max_streams
464  ) {
465  s1->skip_media = 1;
466  return;
467  }
468  rtsp_st = av_mallocz(sizeof(RTSPStream));
469  if (!rtsp_st)
470  return;
471  rtsp_st->stream_index = -1;
472  dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
473 
474  rtsp_st->sdp_ip = s1->default_ip;
475  rtsp_st->sdp_ttl = s1->default_ttl;
476 
477  copy_default_source_addrs(s1->default_include_source_addrs,
478  s1->nb_default_include_source_addrs,
479  &rtsp_st->include_source_addrs,
480  &rtsp_st->nb_include_source_addrs);
481  copy_default_source_addrs(s1->default_exclude_source_addrs,
482  s1->nb_default_exclude_source_addrs,
483  &rtsp_st->exclude_source_addrs,
484  &rtsp_st->nb_exclude_source_addrs);
485 
486  get_word(buf1, sizeof(buf1), &p); /* port */
487  rtsp_st->sdp_port = atoi(buf1);
488 
489  get_word(buf1, sizeof(buf1), &p); /* protocol */
490  if (!strcmp(buf1, "udp"))
492  else if (strstr(buf1, "/AVPF") || strstr(buf1, "/SAVPF"))
493  rtsp_st->feedback = 1;
494 
495  /* XXX: handle list of formats */
496  get_word(buf1, sizeof(buf1), &p); /* format list */
497  rtsp_st->sdp_payload_type = atoi(buf1);
498 
499  if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
500  /* no corresponding stream */
501  if (rt->transport == RTSP_TRANSPORT_RAW) {
502  if (CONFIG_RTPDEC && !rt->ts)
503  rt->ts = avpriv_mpegts_parse_open(s);
504  } else {
506  handler = ff_rtp_handler_find_by_id(
508  init_rtp_handler(handler, rtsp_st, NULL);
509  finalize_rtp_handler_init(s, rtsp_st, NULL);
510  }
511  } else if (rt->server_type == RTSP_SERVER_WMS &&
512  codec_type == AVMEDIA_TYPE_DATA) {
513  /* RTX stream, a stream that carries all the other actual
514  * audio/video streams. Don't expose this to the callers. */
515  } else {
516  st = avformat_new_stream(s, NULL);
517  if (!st)
518  return;
519  st->id = rt->nb_rtsp_streams - 1;
520  rtsp_st->stream_index = st->index;
522  if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
524  /* if standard payload type, we can find the codec right now */
526  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
527  st->codecpar->sample_rate > 0)
528  avpriv_set_pts_info(st, 32, 1, st->codecpar->sample_rate);
529  /* Even static payload types may need a custom depacketizer */
530  handler = ff_rtp_handler_find_by_id(
531  rtsp_st->sdp_payload_type, st->codecpar->codec_type);
532  init_rtp_handler(handler, rtsp_st, st);
533  finalize_rtp_handler_init(s, rtsp_st, st);
534  }
535  if (rt->default_lang[0])
536  av_dict_set(&st->metadata, "language", rt->default_lang, 0);
537  }
538  /* put a default control url */
539  av_strlcpy(rtsp_st->control_url, rt->control_uri,
540  sizeof(rtsp_st->control_url));
541  break;
542  case 'a':
543  if (av_strstart(p, "control:", &p)) {
544  if (s->nb_streams == 0) {
545  if (!strncmp(p, "rtsp://", 7))
546  av_strlcpy(rt->control_uri, p,
547  sizeof(rt->control_uri));
548  } else {
549  char proto[32];
550  /* get the control url */
551  rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
552 
553  /* XXX: may need to add full url resolution */
554  av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
555  NULL, NULL, 0, p);
556  if (proto[0] == '\0') {
557  /* relative control URL */
558  if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
559  av_strlcat(rtsp_st->control_url, "/",
560  sizeof(rtsp_st->control_url));
561  av_strlcat(rtsp_st->control_url, p,
562  sizeof(rtsp_st->control_url));
563  } else
564  av_strlcpy(rtsp_st->control_url, p,
565  sizeof(rtsp_st->control_url));
566  }
567  } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
568  /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
569  get_word(buf1, sizeof(buf1), &p);
570  payload_type = atoi(buf1);
571  rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
572  if (rtsp_st->stream_index >= 0) {
573  st = s->streams[rtsp_st->stream_index];
574  sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
575  }
576  s1->seen_rtpmap = 1;
577  if (s1->seen_fmtp) {
578  parse_fmtp(s, rt, payload_type, s1->delayed_fmtp);
579  }
580  } else if (av_strstart(p, "fmtp:", &p) ||
581  av_strstart(p, "framesize:", &p)) {
582  // let dynamic protocol handlers have a stab at the line.
583  get_word(buf1, sizeof(buf1), &p);
584  payload_type = atoi(buf1);
585  if (s1->seen_rtpmap) {
586  parse_fmtp(s, rt, payload_type, buf);
587  } else {
588  s1->seen_fmtp = 1;
589  av_strlcpy(s1->delayed_fmtp, buf, sizeof(s1->delayed_fmtp));
590  }
591  } else if (av_strstart(p, "ssrc:", &p) && s->nb_streams > 0) {
592  rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
593  get_word(buf1, sizeof(buf1), &p);
594  rtsp_st->ssrc = strtoll(buf1, NULL, 10);
595  } else if (av_strstart(p, "range:", &p)) {
596  int64_t start, end;
597 
598  // this is so that seeking on a streamed file can work.
599  rtsp_parse_range_npt(p, &start, &end);
600  s->start_time = start;
601  /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
602  s->duration = (end == AV_NOPTS_VALUE) ?
603  AV_NOPTS_VALUE : end - start;
604  } else if (av_strstart(p, "lang:", &p)) {
605  if (s->nb_streams > 0) {
606  get_word(buf1, sizeof(buf1), &p);
607  rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
608  if (rtsp_st->stream_index >= 0) {
609  st = s->streams[rtsp_st->stream_index];
610  av_dict_set(&st->metadata, "language", buf1, 0);
611  }
612  } else
613  get_word(rt->default_lang, sizeof(rt->default_lang), &p);
614  } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
615  if (atoi(p) == 1)
617  } else if (av_strstart(p, "SampleRate:integer;", &p) &&
618  s->nb_streams > 0) {
619  st = s->streams[s->nb_streams - 1];
620  st->codecpar->sample_rate = atoi(p);
621  } else if (av_strstart(p, "crypto:", &p) && s->nb_streams > 0) {
622  // RFC 4568
623  rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
624  get_word(buf1, sizeof(buf1), &p); // ignore tag
625  get_word(rtsp_st->crypto_suite, sizeof(rtsp_st->crypto_suite), &p);
626  p += strspn(p, SPACE_CHARS);
627  if (av_strstart(p, "inline:", &p))
628  get_word(rtsp_st->crypto_params, sizeof(rtsp_st->crypto_params), &p);
629  } else if (av_strstart(p, "source-filter:", &p)) {
630  int exclude = 0;
631  get_word(buf1, sizeof(buf1), &p);
632  if (strcmp(buf1, "incl") && strcmp(buf1, "excl"))
633  return;
634  exclude = !strcmp(buf1, "excl");
635 
636  get_word(buf1, sizeof(buf1), &p);
637  if (strcmp(buf1, "IN") != 0)
638  return;
639  get_word(buf1, sizeof(buf1), &p);
640  if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6") && strcmp(buf1, "*"))
641  return;
642  // not checking that the destination address actually matches or is wildcard
643  get_word(buf1, sizeof(buf1), &p);
644 
645  while (*p != '\0') {
646  rtsp_src = av_mallocz(sizeof(*rtsp_src));
647  if (!rtsp_src)
648  return;
649  get_word(rtsp_src->addr, sizeof(rtsp_src->addr), &p);
650  if (exclude) {
651  if (s->nb_streams == 0) {
652  dynarray_add(&s1->default_exclude_source_addrs, &s1->nb_default_exclude_source_addrs, rtsp_src);
653  } else {
654  rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
655  dynarray_add(&rtsp_st->exclude_source_addrs, &rtsp_st->nb_exclude_source_addrs, rtsp_src);
656  }
657  } else {
658  if (s->nb_streams == 0) {
659  dynarray_add(&s1->default_include_source_addrs, &s1->nb_default_include_source_addrs, rtsp_src);
660  } else {
661  rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
662  dynarray_add(&rtsp_st->include_source_addrs, &rtsp_st->nb_include_source_addrs, rtsp_src);
663  }
664  }
665  }
666  } else {
667  if (rt->server_type == RTSP_SERVER_WMS)
669  if (s->nb_streams > 0) {
670  rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
671 
672  if (rt->server_type == RTSP_SERVER_REAL)
673  ff_real_parse_sdp_a_line(s, rtsp_st->stream_index, p);
674 
675  if (rtsp_st->dynamic_handler &&
677  rtsp_st->dynamic_handler->parse_sdp_a_line(s,
678  rtsp_st->stream_index,
679  rtsp_st->dynamic_protocol_context, buf);
680  }
681  }
682  break;
683  }
684 }
685 
686 int ff_sdp_parse(AVFormatContext *s, const char *content)
687 {
688  const char *p;
689  int letter, i;
690  /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
691  * contain long SDP lines containing complete ASF Headers (several
692  * kB) or arrays of MDPR (RM stream descriptor) headers plus
693  * "rulebooks" describing their properties. Therefore, the SDP line
694  * buffer is large.
695  *
696  * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
697  * in rtpdec_xiph.c. */
698  char buf[16384], *q;
699  SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state;
700 
701  p = content;
702  for (;;) {
703  p += strspn(p, SPACE_CHARS);
704  letter = *p;
705  if (letter == '\0')
706  break;
707  p++;
708  if (*p != '=')
709  goto next_line;
710  p++;
711  /* get the content */
712  q = buf;
713  while (*p != '\n' && *p != '\r' && *p != '\0') {
714  if ((q - buf) < sizeof(buf) - 1)
715  *q++ = *p;
716  p++;
717  }
718  *q = '\0';
719  sdp_parse_line(s, s1, letter, buf);
720  next_line:
721  while (*p != '\n' && *p != '\0')
722  p++;
723  if (*p == '\n')
724  p++;
725  }
726 
727  for (i = 0; i < s1->nb_default_include_source_addrs; i++)
728  av_freep(&s1->default_include_source_addrs[i]);
729  av_freep(&s1->default_include_source_addrs);
730  for (i = 0; i < s1->nb_default_exclude_source_addrs; i++)
731  av_freep(&s1->default_exclude_source_addrs[i]);
732  av_freep(&s1->default_exclude_source_addrs);
733 
734  return 0;
735 }
736 #endif /* CONFIG_RTPDEC */
737 
738 void ff_rtsp_undo_setup(AVFormatContext *s, int send_packets)
739 {
740  RTSPState *rt = s->priv_data;
741  int i;
742 
743  for (i = 0; i < rt->nb_rtsp_streams; i++) {
744  RTSPStream *rtsp_st = rt->rtsp_streams[i];
745  if (!rtsp_st)
746  continue;
747  if (rtsp_st->transport_priv) {
748  if (s->oformat) {
749  AVFormatContext *rtpctx = rtsp_st->transport_priv;
750  av_write_trailer(rtpctx);
752  if (CONFIG_RTSP_MUXER && rtpctx->pb && send_packets)
753  ff_rtsp_tcp_write_packet(s, rtsp_st);
754  ffio_free_dyn_buf(&rtpctx->pb);
755  } else {
756  avio_closep(&rtpctx->pb);
757  }
758  avformat_free_context(rtpctx);
759  } else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RDT)
761  else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RTP)
763  }
764  rtsp_st->transport_priv = NULL;
765  if (rtsp_st->rtp_handle)
766  ffurl_close(rtsp_st->rtp_handle);
767  rtsp_st->rtp_handle = NULL;
768  }
769 }
770 
771 /* close and free RTSP streams */
773 {
774  RTSPState *rt = s->priv_data;
775  int i, j;
776  RTSPStream *rtsp_st;
777 
778  ff_rtsp_undo_setup(s, 0);
779  for (i = 0; i < rt->nb_rtsp_streams; i++) {
780  rtsp_st = rt->rtsp_streams[i];
781  if (rtsp_st) {
782  if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context) {
783  if (rtsp_st->dynamic_handler->close)
784  rtsp_st->dynamic_handler->close(
785  rtsp_st->dynamic_protocol_context);
787  }
788  for (j = 0; j < rtsp_st->nb_include_source_addrs; j++)
789  av_freep(&rtsp_st->include_source_addrs[j]);
790  av_freep(&rtsp_st->include_source_addrs);
791  for (j = 0; j < rtsp_st->nb_exclude_source_addrs; j++)
792  av_freep(&rtsp_st->exclude_source_addrs[j]);
793  av_freep(&rtsp_st->exclude_source_addrs);
794 
795  av_freep(&rtsp_st);
796  }
797  }
798  av_freep(&rt->rtsp_streams);
799  if (rt->asf_ctx) {
801  }
802  if (CONFIG_RTPDEC && rt->ts)
804  av_freep(&rt->p);
805  av_freep(&rt->recvbuf);
806 }
807 
809 {
810  RTSPState *rt = s->priv_data;
811  AVStream *st = NULL;
812  int reordering_queue_size = rt->reordering_queue_size;
813  if (reordering_queue_size < 0) {
815  reordering_queue_size = 0;
816  else
817  reordering_queue_size = RTP_REORDER_QUEUE_DEFAULT_SIZE;
818  }
819 
820  /* open the RTP context */
821  if (rtsp_st->stream_index >= 0)
822  st = s->streams[rtsp_st->stream_index];
823  if (!st)
825 
826  if (CONFIG_RTSP_MUXER && s->oformat && st) {
828  s, st, rtsp_st->rtp_handle,
830  rtsp_st->stream_index);
831  /* Ownership of rtp_handle is passed to the rtp mux context */
832  rtsp_st->rtp_handle = NULL;
833  if (ret < 0)
834  return ret;
835  st->time_base = ((AVFormatContext*)rtsp_st->transport_priv)->streams[0]->time_base;
836  } else if (rt->transport == RTSP_TRANSPORT_RAW) {
837  return 0; // Don't need to open any parser here
838  } else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RDT && st)
839  rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
840  rtsp_st->dynamic_protocol_context,
841  rtsp_st->dynamic_handler);
842  else if (CONFIG_RTPDEC)
843  rtsp_st->transport_priv = ff_rtp_parse_open(s, st,
844  rtsp_st->sdp_payload_type,
845  reordering_queue_size);
846 
847  if (!rtsp_st->transport_priv) {
848  return AVERROR(ENOMEM);
849  } else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RTP &&
850  s->iformat) {
851  RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
852  rtpctx->ssrc = rtsp_st->ssrc;
853  if (rtsp_st->dynamic_handler) {
855  rtsp_st->dynamic_protocol_context,
856  rtsp_st->dynamic_handler);
857  }
858  if (rtsp_st->crypto_suite[0])
860  rtsp_st->crypto_suite,
861  rtsp_st->crypto_params);
862  }
863 
864  return 0;
865 }
866 
867 #if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
868 static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
869 {
870  const char *q;
871  char *p;
872  int v;
873 
874  q = *pp;
875  q += strspn(q, SPACE_CHARS);
876  v = strtol(q, &p, 10);
877  if (*p == '-') {
878  p++;
879  *min_ptr = v;
880  v = strtol(p, &p, 10);
881  *max_ptr = v;
882  } else {
883  *min_ptr = v;
884  *max_ptr = v;
885  }
886  *pp = p;
887 }
888 
889 /* XXX: only one transport specification is parsed */
890 static void rtsp_parse_transport(AVFormatContext *s,
891  RTSPMessageHeader *reply, const char *p)
892 {
893  char transport_protocol[16];
894  char profile[16];
895  char lower_transport[16];
896  char parameter[16];
898  char buf[256];
899 
900  reply->nb_transports = 0;
901 
902  for (;;) {
903  p += strspn(p, SPACE_CHARS);
904  if (*p == '\0')
905  break;
906 
907  th = &reply->transports[reply->nb_transports];
908 
909  get_word_sep(transport_protocol, sizeof(transport_protocol),
910  "/", &p);
911  if (!av_strcasecmp (transport_protocol, "rtp")) {
912  get_word_sep(profile, sizeof(profile), "/;,", &p);
913  lower_transport[0] = '\0';
914  /* rtp/avp/<protocol> */
915  if (*p == '/') {
916  get_word_sep(lower_transport, sizeof(lower_transport),
917  ";,", &p);
918  }
920  } else if (!av_strcasecmp (transport_protocol, "x-pn-tng") ||
921  !av_strcasecmp (transport_protocol, "x-real-rdt")) {
922  /* x-pn-tng/<protocol> */
923  get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
924  profile[0] = '\0';
926  } else if (!av_strcasecmp(transport_protocol, "raw")) {
927  get_word_sep(profile, sizeof(profile), "/;,", &p);
928  lower_transport[0] = '\0';
929  /* raw/raw/<protocol> */
930  if (*p == '/') {
931  get_word_sep(lower_transport, sizeof(lower_transport),
932  ";,", &p);
933  }
935  }
936  if (!av_strcasecmp(lower_transport, "TCP"))
938  else
940 
941  if (*p == ';')
942  p++;
943  /* get each parameter */
944  while (*p != '\0' && *p != ',') {
945  get_word_sep(parameter, sizeof(parameter), "=;,", &p);
946  if (!strcmp(parameter, "port")) {
947  if (*p == '=') {
948  p++;
949  rtsp_parse_range(&th->port_min, &th->port_max, &p);
950  }
951  } else if (!strcmp(parameter, "client_port")) {
952  if (*p == '=') {
953  p++;
954  rtsp_parse_range(&th->client_port_min,
955  &th->client_port_max, &p);
956  }
957  } else if (!strcmp(parameter, "server_port")) {
958  if (*p == '=') {
959  p++;
960  rtsp_parse_range(&th->server_port_min,
961  &th->server_port_max, &p);
962  }
963  } else if (!strcmp(parameter, "interleaved")) {
964  if (*p == '=') {
965  p++;
966  rtsp_parse_range(&th->interleaved_min,
967  &th->interleaved_max, &p);
968  }
969  } else if (!strcmp(parameter, "multicast")) {
972  } else if (!strcmp(parameter, "ttl")) {
973  if (*p == '=') {
974  char *end;
975  p++;
976  th->ttl = strtol(p, &end, 10);
977  p = end;
978  }
979  } else if (!strcmp(parameter, "destination")) {
980  if (*p == '=') {
981  p++;
982  get_word_sep(buf, sizeof(buf), ";,", &p);
983  get_sockaddr(s, buf, &th->destination);
984  }
985  } else if (!strcmp(parameter, "source")) {
986  if (*p == '=') {
987  p++;
988  get_word_sep(buf, sizeof(buf), ";,", &p);
989  av_strlcpy(th->source, buf, sizeof(th->source));
990  }
991  } else if (!strcmp(parameter, "mode")) {
992  if (*p == '=') {
993  p++;
994  get_word_sep(buf, sizeof(buf), ";, ", &p);
995  if (!strcmp(buf, "record") ||
996  !strcmp(buf, "receive"))
997  th->mode_record = 1;
998  }
999  }
1000 
1001  while (*p != ';' && *p != '\0' && *p != ',')
1002  p++;
1003  if (*p == ';')
1004  p++;
1005  }
1006  if (*p == ',')
1007  p++;
1008 
1009  reply->nb_transports++;
1010  if (reply->nb_transports >= RTSP_MAX_TRANSPORTS)
1011  break;
1012  }
1013 }
1014 
1015 static void handle_rtp_info(RTSPState *rt, const char *url,
1016  uint32_t seq, uint32_t rtptime)
1017 {
1018  int i;
1019  if (!rtptime || !url[0])
1020  return;
1021  if (rt->transport != RTSP_TRANSPORT_RTP)
1022  return;
1023  for (i = 0; i < rt->nb_rtsp_streams; i++) {
1024  RTSPStream *rtsp_st = rt->rtsp_streams[i];
1025  RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1026  if (!rtpctx)
1027  continue;
1028  if (!strcmp(rtsp_st->control_url, url)) {
1029  rtpctx->base_timestamp = rtptime;
1030  break;
1031  }
1032  }
1033 }
1034 
1035 static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
1036 {
1037  int read = 0;
1038  char key[20], value[1024], url[1024] = "";
1039  uint32_t seq = 0, rtptime = 0;
1040 
1041  for (;;) {
1042  p += strspn(p, SPACE_CHARS);
1043  if (!*p)
1044  break;
1045  get_word_sep(key, sizeof(key), "=", &p);
1046  if (*p != '=')
1047  break;
1048  p++;
1049  get_word_sep(value, sizeof(value), ";, ", &p);
1050  read++;
1051  if (!strcmp(key, "url"))
1052  av_strlcpy(url, value, sizeof(url));
1053  else if (!strcmp(key, "seq"))
1054  seq = strtoul(value, NULL, 10);
1055  else if (!strcmp(key, "rtptime"))
1056  rtptime = strtoul(value, NULL, 10);
1057  if (*p == ',') {
1058  handle_rtp_info(rt, url, seq, rtptime);
1059  url[0] = '\0';
1060  seq = rtptime = 0;
1061  read = 0;
1062  }
1063  if (*p)
1064  p++;
1065  }
1066  if (read > 0)
1067  handle_rtp_info(rt, url, seq, rtptime);
1068 }
1069 
1071  RTSPMessageHeader *reply, const char *buf,
1072  RTSPState *rt, const char *method)
1073 {
1074  const char *p;
1075 
1076  /* NOTE: we do case independent match for broken servers */
1077  p = buf;
1078  if (av_stristart(p, "Session:", &p)) {
1079  int t;
1080  get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
1081  if (av_stristart(p, ";timeout=", &p) &&
1082  (t = strtol(p, NULL, 10)) > 0) {
1083  reply->timeout = t;
1084  }
1085  } else if (av_stristart(p, "Content-Length:", &p)) {
1086  reply->content_length = strtol(p, NULL, 10);
1087  } else if (av_stristart(p, "Transport:", &p)) {
1088  rtsp_parse_transport(s, reply, p);
1089  } else if (av_stristart(p, "CSeq:", &p)) {
1090  reply->seq = strtol(p, NULL, 10);
1091  } else if (av_stristart(p, "Range:", &p)) {
1092  rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
1093  } else if (av_stristart(p, "RealChallenge1:", &p)) {
1094  p += strspn(p, SPACE_CHARS);
1095  av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
1096  } else if (av_stristart(p, "Server:", &p)) {
1097  p += strspn(p, SPACE_CHARS);
1098  av_strlcpy(reply->server, p, sizeof(reply->server));
1099  } else if (av_stristart(p, "Notice:", &p) ||
1100  av_stristart(p, "X-Notice:", &p)) {
1101  reply->notice = strtol(p, NULL, 10);
1102  } else if (av_stristart(p, "Location:", &p)) {
1103  p += strspn(p, SPACE_CHARS);
1104  av_strlcpy(reply->location, p , sizeof(reply->location));
1105  } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
1106  p += strspn(p, SPACE_CHARS);
1107  ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
1108  } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
1109  p += strspn(p, SPACE_CHARS);
1110  ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
1111  } else if (av_stristart(p, "Content-Base:", &p) && rt) {
1112  p += strspn(p, SPACE_CHARS);
1113  if (method && !strcmp(method, "DESCRIBE"))
1114  av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
1115  } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
1116  p += strspn(p, SPACE_CHARS);
1117  if (method && !strcmp(method, "PLAY"))
1118  rtsp_parse_rtp_info(rt, p);
1119  } else if (av_stristart(p, "Public:", &p) && rt) {
1120  if (strstr(p, "GET_PARAMETER") &&
1121  method && !strcmp(method, "OPTIONS"))
1122  rt->get_parameter_supported = 1;
1123  } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
1124  p += strspn(p, SPACE_CHARS);
1125  rt->accept_dynamic_rate = atoi(p);
1126  } else if (av_stristart(p, "Content-Type:", &p)) {
1127  p += strspn(p, SPACE_CHARS);
1128  av_strlcpy(reply->content_type, p, sizeof(reply->content_type));
1129  }
1130 }
1131 
1132 /* skip a RTP/TCP interleaved packet */
1134 {
1135  RTSPState *rt = s->priv_data;
1136  int ret, len, len1;
1137  uint8_t buf[1024];
1138 
1139  ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
1140  if (ret != 3)
1141  return;
1142  len = AV_RB16(buf + 1);
1143 
1144  av_log(s, AV_LOG_TRACE, "skipping RTP packet len=%d\n", len);
1145 
1146  /* skip payload */
1147  while (len > 0) {
1148  len1 = len;
1149  if (len1 > sizeof(buf))
1150  len1 = sizeof(buf);
1151  ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
1152  if (ret != len1)
1153  return;
1154  len -= len1;
1155  }
1156 }
1157 
1159  unsigned char **content_ptr,
1160  int return_on_interleaved_data, const char *method)
1161 {
1162  RTSPState *rt = s->priv_data;
1163  char buf[4096], buf1[1024], *q;
1164  unsigned char ch;
1165  const char *p;
1166  int ret, content_length, line_count = 0, request = 0;
1167  unsigned char *content = NULL;
1168 
1169 start:
1170  line_count = 0;
1171  request = 0;
1172  content = NULL;
1173  memset(reply, 0, sizeof(*reply));
1174 
1175  /* parse reply (XXX: use buffers) */
1176  rt->last_reply[0] = '\0';
1177  for (;;) {
1178  q = buf;
1179  for (;;) {
1180  ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
1181  av_log(s, AV_LOG_TRACE, "ret=%d c=%02x [%c]\n", ret, ch, ch);
1182  if (ret != 1)
1183  return AVERROR_EOF;
1184  if (ch == '\n')
1185  break;
1186  if (ch == '$' && q == buf) {
1187  if (return_on_interleaved_data) {
1188  return 1;
1189  } else
1191  } else if (ch != '\r') {
1192  if ((q - buf) < sizeof(buf) - 1)
1193  *q++ = ch;
1194  }
1195  }
1196  *q = '\0';
1197 
1198  av_log(s, AV_LOG_TRACE, "line='%s'\n", buf);
1199 
1200  /* test if last line */
1201  if (buf[0] == '\0')
1202  break;
1203  p = buf;
1204  if (line_count == 0) {
1205  /* get reply code */
1206  get_word(buf1, sizeof(buf1), &p);
1207  if (!strncmp(buf1, "RTSP/", 5)) {
1208  get_word(buf1, sizeof(buf1), &p);
1209  reply->status_code = atoi(buf1);
1210  av_strlcpy(reply->reason, p, sizeof(reply->reason));
1211  } else {
1212  av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method
1213  get_word(buf1, sizeof(buf1), &p); // object
1214  request = 1;
1215  }
1216  } else {
1217  ff_rtsp_parse_line(s, reply, p, rt, method);
1218  av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
1219  av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1220  }
1221  line_count++;
1222  }
1223 
1224  if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0' && !request)
1225  av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
1226 
1227  content_length = reply->content_length;
1228  if (content_length > 0) {
1229  /* leave some room for a trailing '\0' (useful for simple parsing) */
1230  content = av_malloc(content_length + 1);
1231  if (!content)
1232  return AVERROR(ENOMEM);
1233  ffurl_read_complete(rt->rtsp_hd, content, content_length);
1234  content[content_length] = '\0';
1235  }
1236  if (content_ptr)
1237  *content_ptr = content;
1238  else
1239  av_freep(&content);
1240 
1241  if (request) {
1242  char buf[1024];
1243  char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1244  const char* ptr = buf;
1245 
1246  if (!strcmp(reply->reason, "OPTIONS")) {
1247  snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n");
1248  if (reply->seq)
1249  av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq);
1250  if (reply->session_id[0])
1251  av_strlcatf(buf, sizeof(buf), "Session: %s\r\n",
1252  reply->session_id);
1253  } else {
1254  snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n");
1255  }
1256  av_strlcat(buf, "\r\n", sizeof(buf));
1257 
1258  if (rt->control_transport == RTSP_MODE_TUNNEL) {
1259  av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1260  ptr = base64buf;
1261  }
1262  ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr));
1263 
1265  /* Even if the request from the server had data, it is not the data
1266  * that the caller wants or expects. The memory could also be leaked
1267  * if the actual following reply has content data. */
1268  if (content_ptr)
1269  av_freep(content_ptr);
1270  /* If method is set, this is called from ff_rtsp_send_cmd,
1271  * where a reply to exactly this request is awaited. For
1272  * callers from within packet receiving, we just want to
1273  * return to the caller and go back to receiving packets. */
1274  if (method)
1275  goto start;
1276  return 0;
1277  }
1278 
1279  if (rt->seq != reply->seq) {
1280  av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
1281  rt->seq, reply->seq);
1282  }
1283 
1284  /* EOS */
1285  if (reply->notice == 2101 /* End-of-Stream Reached */ ||
1286  reply->notice == 2104 /* Start-of-Stream Reached */ ||
1287  reply->notice == 2306 /* Continuous Feed Terminated */) {
1288  rt->state = RTSP_STATE_IDLE;
1289  } else if (reply->notice >= 4400 && reply->notice < 5500) {
1290  return AVERROR(EIO); /* data or server error */
1291  } else if (reply->notice == 2401 /* Ticket Expired */ ||
1292  (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
1293  return AVERROR(EPERM);
1294 
1295  return 0;
1296 }
1297 
1298 /**
1299  * Send a command to the RTSP server without waiting for the reply.
1300  *
1301  * @param s RTSP (de)muxer context
1302  * @param method the method for the request
1303  * @param url the target url for the request
1304  * @param headers extra header lines to include in the request
1305  * @param send_content if non-null, the data to send as request body content
1306  * @param send_content_length the length of the send_content data, or 0 if
1307  * send_content is null
1308  *
1309  * @return zero if success, nonzero otherwise
1310  */
1311 static int rtsp_send_cmd_with_content_async(AVFormatContext *s,
1312  const char *method, const char *url,
1313  const char *headers,
1314  const unsigned char *send_content,
1315  int send_content_length)
1316 {
1317  RTSPState *rt = s->priv_data;
1318  char buf[4096], *out_buf;
1319  char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1320 
1321  /* Add in RTSP headers */
1322  out_buf = buf;
1323  rt->seq++;
1324  snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1325  if (headers)
1326  av_strlcat(buf, headers, sizeof(buf));
1327  av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
1328  av_strlcatf(buf, sizeof(buf), "User-Agent: %s\r\n", rt->user_agent);
1329  if (rt->session_id[0] != '\0' && (!headers ||
1330  !strstr(headers, "\nIf-Match:"))) {
1331  av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
1332  }
1333  if (rt->auth[0]) {
1334  char *str = ff_http_auth_create_response(&rt->auth_state,
1335  rt->auth, url, method);
1336  if (str)
1337  av_strlcat(buf, str, sizeof(buf));
1338  av_free(str);
1339  }
1340  if (send_content_length > 0 && send_content)
1341  av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
1342  av_strlcat(buf, "\r\n", sizeof(buf));
1343 
1344  /* base64 encode rtsp if tunneling */
1345  if (rt->control_transport == RTSP_MODE_TUNNEL) {
1346  av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1347  out_buf = base64buf;
1348  }
1349 
1350  av_log(s, AV_LOG_TRACE, "Sending:\n%s--\n", buf);
1351 
1352  ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
1353  if (send_content_length > 0 && send_content) {
1354  if (rt->control_transport == RTSP_MODE_TUNNEL) {
1355  avpriv_report_missing_feature(s, "Tunneling of RTSP requests with content data");
1356  return AVERROR_PATCHWELCOME;
1357  }
1358  ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
1359  }
1361 
1362  return 0;
1363 }
1364 
1365 int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
1366  const char *url, const char *headers)
1367 {
1368  return rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
1369 }
1370 
1371 int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
1372  const char *headers, RTSPMessageHeader *reply,
1373  unsigned char **content_ptr)
1374 {
1375  return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
1376  content_ptr, NULL, 0);
1377 }
1378 
1380  const char *method, const char *url,
1381  const char *header,
1382  RTSPMessageHeader *reply,
1383  unsigned char **content_ptr,
1384  const unsigned char *send_content,
1385  int send_content_length)
1386 {
1387  RTSPState *rt = s->priv_data;
1388  HTTPAuthType cur_auth_type;
1389  int ret, attempts = 0;
1390 
1391 retry:
1392  cur_auth_type = rt->auth_state.auth_type;
1393  if ((ret = rtsp_send_cmd_with_content_async(s, method, url, header,
1394  send_content,
1395  send_content_length)))
1396  return ret;
1397 
1398  if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
1399  return ret;
1400  attempts++;
1401 
1402  if (reply->status_code == 401 &&
1403  (cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) &&
1404  rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2)
1405  goto retry;
1406 
1407  if (reply->status_code > 400){
1408  av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
1409  method,
1410  reply->status_code,
1411  reply->reason);
1412  av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1413  }
1414 
1415  return 0;
1416 }
1417 
1418 int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
1419  int lower_transport, const char *real_challenge)
1420 {
1421  RTSPState *rt = s->priv_data;
1422  int rtx = 0, j, i, err, interleave = 0, port_off;
1423  RTSPStream *rtsp_st;
1424  RTSPMessageHeader reply1, *reply = &reply1;
1425  char cmd[2048];
1426  const char *trans_pref;
1427 
1428  if (rt->transport == RTSP_TRANSPORT_RDT)
1429  trans_pref = "x-pn-tng";
1430  else if (rt->transport == RTSP_TRANSPORT_RAW)
1431  trans_pref = "RAW/RAW";
1432  else
1433  trans_pref = "RTP/AVP";
1434 
1435  /* default timeout: 1 minute */
1436  rt->timeout = 60;
1437 
1438  /* Choose a random starting offset within the first half of the
1439  * port range, to allow for a number of ports to try even if the offset
1440  * happens to be at the end of the random range. */
1441  port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2);
1442  /* even random offset */
1443  port_off -= port_off & 0x01;
1444 
1445  for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) {
1446  char transport[2048];
1447 
1448  /*
1449  * WMS serves all UDP data over a single connection, the RTX, which
1450  * isn't necessarily the first in the SDP but has to be the first
1451  * to be set up, else the second/third SETUP will fail with a 461.
1452  */
1453  if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1454  rt->server_type == RTSP_SERVER_WMS) {
1455  if (i == 0) {
1456  /* rtx first */
1457  for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1458  int len = strlen(rt->rtsp_streams[rtx]->control_url);
1459  if (len >= 4 &&
1460  !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1461  "/rtx"))
1462  break;
1463  }
1464  if (rtx == rt->nb_rtsp_streams)
1465  return -1; /* no RTX found */
1466  rtsp_st = rt->rtsp_streams[rtx];
1467  } else
1468  rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1469  } else
1470  rtsp_st = rt->rtsp_streams[i];
1471 
1472  /* RTP/UDP */
1473  if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
1474  char buf[256];
1475 
1476  if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1477  port = reply->transports[0].client_port_min;
1478  goto have_port;
1479  }
1480 
1481  /* first try in specified port range */
1482  while (j <= rt->rtp_port_max) {
1483  AVDictionary *opts = map_to_opts(rt);
1484 
1485  ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1486  "?localport=%d", j);
1487  /* we will use two ports per rtp stream (rtp and rtcp) */
1488  j += 2;
1491 
1492  av_dict_free(&opts);
1493 
1494  if (!err)
1495  goto rtp_opened;
1496  }
1497  av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1498  err = AVERROR(EIO);
1499  goto fail;
1500 
1501  rtp_opened:
1502  port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
1503  have_port:
1504  snprintf(transport, sizeof(transport) - 1,
1505  "%s/UDP;", trans_pref);
1506  if (rt->server_type != RTSP_SERVER_REAL)
1507  av_strlcat(transport, "unicast;", sizeof(transport));
1508  av_strlcatf(transport, sizeof(transport),
1509  "client_port=%d", port);
1510  if (rt->transport == RTSP_TRANSPORT_RTP &&
1511  !(rt->server_type == RTSP_SERVER_WMS && i > 0))
1512  av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1513  }
1514 
1515  /* RTP/TCP */
1516  else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1517  /* For WMS streams, the application streams are only used for
1518  * UDP. When trying to set it up for TCP streams, the server
1519  * will return an error. Therefore, we skip those streams. */
1520  if (rt->server_type == RTSP_SERVER_WMS &&
1521  (rtsp_st->stream_index < 0 ||
1522  s->streams[rtsp_st->stream_index]->codecpar->codec_type ==
1524  continue;
1525  snprintf(transport, sizeof(transport) - 1,
1526  "%s/TCP;", trans_pref);
1527  if (rt->transport != RTSP_TRANSPORT_RDT)
1528  av_strlcat(transport, "unicast;", sizeof(transport));
1529  av_strlcatf(transport, sizeof(transport),
1530  "interleaved=%d-%d",
1531  interleave, interleave + 1);
1532  interleave += 2;
1533  }
1534 
1535  else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
1536  snprintf(transport, sizeof(transport) - 1,
1537  "%s/UDP;multicast", trans_pref);
1538  }
1539  if (s->oformat) {
1540  av_strlcat(transport, ";mode=record", sizeof(transport));
1541  } else if (rt->server_type == RTSP_SERVER_REAL ||
1543  av_strlcat(transport, ";mode=play", sizeof(transport));
1544  snprintf(cmd, sizeof(cmd),
1545  "Transport: %s\r\n",
1546  transport);
1547  if (rt->accept_dynamic_rate)
1548  av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
1549  if (CONFIG_RTPDEC && i == 0 && rt->server_type == RTSP_SERVER_REAL) {
1550  char real_res[41], real_csum[9];
1551  ff_rdt_calc_response_and_checksum(real_res, real_csum,
1552  real_challenge);
1553  av_strlcatf(cmd, sizeof(cmd),
1554  "If-Match: %s\r\n"
1555  "RealChallenge2: %s, sd=%s\r\n",
1556  rt->session_id, real_res, real_csum);
1557  }
1558  ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
1559  if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1560  err = 1;
1561  goto fail;
1562  } else if (reply->status_code != RTSP_STATUS_OK ||
1563  reply->nb_transports != 1) {
1565  goto fail;
1566  }
1567 
1568  /* XXX: same protocol for all streams is required */
1569  if (i > 0) {
1570  if (reply->transports[0].lower_transport != rt->lower_transport ||
1571  reply->transports[0].transport != rt->transport) {
1572  err = AVERROR_INVALIDDATA;
1573  goto fail;
1574  }
1575  } else {
1576  rt->lower_transport = reply->transports[0].lower_transport;
1577  rt->transport = reply->transports[0].transport;
1578  }
1579 
1580  /* Fail if the server responded with another lower transport mode
1581  * than what we requested. */
1582  if (reply->transports[0].lower_transport != lower_transport) {
1583  av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1584  err = AVERROR_INVALIDDATA;
1585  goto fail;
1586  }
1587 
1588  switch(reply->transports[0].lower_transport) {
1590  rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1591  rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1592  break;
1593 
1594  case RTSP_LOWER_TRANSPORT_UDP: {
1595  char url[1024], options[30] = "";
1596  const char *peer = host;
1597 
1598  if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
1599  av_strlcpy(options, "?connect=1", sizeof(options));
1600  /* Use source address if specified */
1601  if (reply->transports[0].source[0])
1602  peer = reply->transports[0].source;
1603  ff_url_join(url, sizeof(url), "rtp", NULL, peer,
1604  reply->transports[0].server_port_min, "%s", options);
1605  if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1606  ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1607  err = AVERROR_INVALIDDATA;
1608  goto fail;
1609  }
1610  break;
1611  }
1613  char url[1024], namebuf[50], optbuf[20] = "";
1614  struct sockaddr_storage addr;
1615  int port, ttl;
1616 
1617  if (reply->transports[0].destination.ss_family) {
1618  addr = reply->transports[0].destination;
1619  port = reply->transports[0].port_min;
1620  ttl = reply->transports[0].ttl;
1621  } else {
1622  addr = rtsp_st->sdp_ip;
1623  port = rtsp_st->sdp_port;
1624  ttl = rtsp_st->sdp_ttl;
1625  }
1626  if (ttl > 0)
1627  snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
1628  getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1629  namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1630  ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
1631  port, "%s", optbuf);
1634  err = AVERROR_INVALIDDATA;
1635  goto fail;
1636  }
1637  break;
1638  }
1639  }
1640 
1641  if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
1642  goto fail;
1643  }
1644 
1645  if (rt->nb_rtsp_streams && reply->timeout > 0)
1646  rt->timeout = reply->timeout;
1647 
1648  if (rt->server_type == RTSP_SERVER_REAL)
1649  rt->need_subscription = 1;
1650 
1651  return 0;
1652 
1653 fail:
1654  ff_rtsp_undo_setup(s, 0);
1655  return err;
1656 }
1657 
1659 {
1660  RTSPState *rt = s->priv_data;
1661  if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1662  ffurl_close(rt->rtsp_hd);
1663  rt->rtsp_hd = rt->rtsp_hd_out = NULL;
1664 }
1665 
1667 {
1668  RTSPState *rt = s->priv_data;
1669  char proto[128], host[1024], path[1024];
1670  char tcpname[1024], cmd[2048], auth[128];
1671  const char *lower_rtsp_proto = "tcp";
1672  int port, err, tcp_fd;
1673  RTSPMessageHeader reply1, *reply = &reply1;
1674  int lower_transport_mask = 0;
1675  int default_port = RTSP_DEFAULT_PORT;
1676  int https_tunnel = 0;
1677  char real_challenge[64] = "";
1678  struct sockaddr_storage peer;
1679  socklen_t peer_len = sizeof(peer);
1680 
1681  if (rt->rtp_port_max < rt->rtp_port_min) {
1682  av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1683  "than min port %d\n", rt->rtp_port_max,
1684  rt->rtp_port_min);
1685  return AVERROR(EINVAL);
1686  }
1687 
1688  if (!ff_network_init())
1689  return AVERROR(EIO);
1690 
1691  if (s->max_delay < 0) /* Not set by the caller */
1693 
1696  (1 << RTSP_LOWER_TRANSPORT_HTTPS))) {
1697  https_tunnel = !!(rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTPS));
1700  }
1701  /* Only pass through valid flags from here */
1703 
1704 redirect:
1705  memset(&reply1, 0, sizeof(reply1));
1706  /* extract hostname and port */
1707  av_url_split(proto, sizeof(proto), auth, sizeof(auth),
1708  host, sizeof(host), &port, path, sizeof(path), s->url);
1709 
1710  if (!strcmp(proto, "rtsps")) {
1711  lower_rtsp_proto = "tls";
1712  default_port = RTSPS_DEFAULT_PORT;
1714  }
1715 
1716  if (*auth) {
1717  av_strlcpy(rt->auth, auth, sizeof(rt->auth));
1718  }
1719  if (port < 0)
1720  port = default_port;
1721 
1722  lower_transport_mask = rt->lower_transport_mask;
1723 
1724  if (!lower_transport_mask)
1725  lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
1726 
1727  if (s->oformat) {
1728  /* Only UDP or TCP - UDP multicast isn't supported. */
1729  lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1730  (1 << RTSP_LOWER_TRANSPORT_TCP);
1731  if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
1732  av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
1733  "only UDP and TCP are supported for output.\n");
1734  err = AVERROR(EINVAL);
1735  goto fail;
1736  }
1737  }
1738 
1739  /* Construct the URI used in request; this is similar to s->url,
1740  * but with authentication credentials removed and RTSP specific options
1741  * stripped out. */
1742  ff_url_join(rt->control_uri, sizeof(rt->control_uri), proto, NULL,
1743  host, port, "%s", path);
1744 
1745  if (rt->control_transport == RTSP_MODE_TUNNEL) {
1746  /* set up initial handshake for tunneling */
1747  char httpname[1024];
1748  char sessioncookie[17];
1749  char headers[1024];
1751 
1752  av_dict_set_int(&options, "timeout", rt->stimeout, 0);
1753 
1754  ff_url_join(httpname, sizeof(httpname), https_tunnel ? "https" : "http", auth, host, port, "%s", path);
1755  snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1757 
1758  /* GET requests */
1759  if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1760  &s->interrupt_callback) < 0) {
1761  err = AVERROR(EIO);
1762  goto fail;
1763  }
1764 
1765  /* generate GET headers */
1766  snprintf(headers, sizeof(headers),
1767  "x-sessioncookie: %s\r\n"
1768  "Accept: application/x-rtsp-tunnelled\r\n"
1769  "Pragma: no-cache\r\n"
1770  "Cache-Control: no-cache\r\n",
1771  sessioncookie);
1772  av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
1773 
1774  if (!rt->rtsp_hd->protocol_whitelist && s->protocol_whitelist) {
1776  if (!rt->rtsp_hd->protocol_whitelist) {
1777  err = AVERROR(ENOMEM);
1778  goto fail;
1779  }
1780  }
1781 
1782  /* complete the connection */
1783  if (ffurl_connect(rt->rtsp_hd, &options)) {
1784  av_dict_free(&options);
1785  err = AVERROR(EIO);
1786  goto fail;
1787  }
1788 
1789  /* POST requests */
1790  if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
1791  &s->interrupt_callback) < 0 ) {
1792  err = AVERROR(EIO);
1793  goto fail;
1794  }
1795 
1796  /* generate POST headers */
1797  snprintf(headers, sizeof(headers),
1798  "x-sessioncookie: %s\r\n"
1799  "Content-Type: application/x-rtsp-tunnelled\r\n"
1800  "Pragma: no-cache\r\n"
1801  "Cache-Control: no-cache\r\n"
1802  "Content-Length: 32767\r\n"
1803  "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1804  sessioncookie);
1805  av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
1806  av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
1807  av_opt_set(rt->rtsp_hd_out->priv_data, "send_expect_100", "0", 0);
1808 
1809  /* Initialize the authentication state for the POST session. The HTTP
1810  * protocol implementation doesn't properly handle multi-pass
1811  * authentication for POST requests, since it would require one of
1812  * the following:
1813  * - implementing Expect: 100-continue, which many HTTP servers
1814  * don't support anyway, even less the RTSP servers that do HTTP
1815  * tunneling
1816  * - sending the whole POST data until getting a 401 reply specifying
1817  * what authentication method to use, then resending all that data
1818  * - waiting for potential 401 replies directly after sending the
1819  * POST header (waiting for some unspecified time)
1820  * Therefore, we copy the full auth state, which works for both basic
1821  * and digest. (For digest, we would have to synchronize the nonce
1822  * count variable between the two sessions, if we'd do more requests
1823  * with the original session, though.)
1824  */
1826 
1827  /* complete the connection */
1828  if (ffurl_connect(rt->rtsp_hd_out, &options)) {
1829  av_dict_free(&options);
1830  err = AVERROR(EIO);
1831  goto fail;
1832  }
1833  av_dict_free(&options);
1834  } else {
1835  int ret;
1836  /* open the tcp connection */
1837  ff_url_join(tcpname, sizeof(tcpname), lower_rtsp_proto, NULL,
1838  host, port,
1839  "?timeout=%d", rt->stimeout);
1840  if ((ret = ffurl_open_whitelist(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
1842  err = ret;
1843  goto fail;
1844  }
1845  rt->rtsp_hd_out = rt->rtsp_hd;
1846  }
1847  rt->seq = 0;
1848 
1849  tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
1850  if (tcp_fd < 0) {
1851  err = tcp_fd;
1852  goto fail;
1853  }
1854  if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1855  getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1856  NULL, 0, NI_NUMERICHOST);
1857  }
1858 
1859  /* request options supported by the server; this also detects server
1860  * type */
1861  for (rt->server_type = RTSP_SERVER_RTP;;) {
1862  cmd[0] = 0;
1863  if (rt->server_type == RTSP_SERVER_REAL)
1864  av_strlcat(cmd,
1865  /*
1866  * The following entries are required for proper
1867  * streaming from a Realmedia server. They are
1868  * interdependent in some way although we currently
1869  * don't quite understand how. Values were copied
1870  * from mplayer SVN r23589.
1871  * ClientChallenge is a 16-byte ID in hex
1872  * CompanyID is a 16-byte ID in base64
1873  */
1874  "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1875  "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1876  "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1877  "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1878  sizeof(cmd));
1879  ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1880  if (reply->status_code != RTSP_STATUS_OK) {
1882  goto fail;
1883  }
1884 
1885  /* detect server type if not standard-compliant RTP */
1886  if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1888  continue;
1889  } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
1891  } else if (rt->server_type == RTSP_SERVER_REAL)
1892  strcpy(real_challenge, reply->real_challenge);
1893  break;
1894  }
1895 
1896  if (CONFIG_RTSP_DEMUXER && s->iformat)
1897  err = ff_rtsp_setup_input_streams(s, reply);
1898  else if (CONFIG_RTSP_MUXER)
1899  err = ff_rtsp_setup_output_streams(s, host);
1900  else
1901  av_assert0(0);
1902  if (err)
1903  goto fail;
1904 
1905  do {
1906  int lower_transport = ff_log2_tab[lower_transport_mask &
1907  ~(lower_transport_mask - 1)];
1908 
1909  if ((lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_TCP))
1910  && (rt->rtsp_flags & RTSP_FLAG_PREFER_TCP))
1911  lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1912 
1913  err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
1914  rt->server_type == RTSP_SERVER_REAL ?
1915  real_challenge : NULL);
1916  if (err < 0)
1917  goto fail;
1918  lower_transport_mask &= ~(1 << lower_transport);
1919  if (lower_transport_mask == 0 && err == 1) {
1920  err = AVERROR(EPROTONOSUPPORT);
1921  goto fail;
1922  }
1923  } while (err);
1924 
1925  rt->lower_transport_mask = lower_transport_mask;
1926  av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
1927  rt->state = RTSP_STATE_IDLE;
1928  rt->seek_timestamp = 0; /* default is to start stream at position zero */
1929  return 0;
1930  fail:
1933  if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
1934  char *new_url = av_strdup(reply->location);
1935  if (!new_url) {
1936  err = AVERROR(ENOMEM);
1937  goto fail2;
1938  }
1939  ff_format_set_url(s, new_url);
1940  rt->session_id[0] = '\0';
1941  av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1942  reply->status_code,
1943  s->url);
1944  goto redirect;
1945  }
1946  fail2:
1947  ff_network_close();
1948  return err;
1949 }
1950 #endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1951 
1952 #if CONFIG_RTPDEC
1953 static int parse_rtsp_message(AVFormatContext *s)
1954 {
1955  RTSPState *rt = s->priv_data;
1956  int ret;
1957 
1958  if (rt->rtsp_flags & RTSP_FLAG_LISTEN) {
1959  if (rt->state == RTSP_STATE_STREAMING) {
1961  return AVERROR_EOF;
1962  else
1964  "Unable to answer to TEARDOWN\n");
1965  } else
1966  return 0;
1967  } else {
1968  RTSPMessageHeader reply;
1969  ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
1970  if (ret < 0)
1971  return ret;
1972  /* XXX: parse message */
1973  if (rt->state != RTSP_STATE_STREAMING)
1974  return 0;
1975  }
1976 
1977  return 0;
1978 }
1979 
1980 static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1981  uint8_t *buf, int buf_size, int64_t wait_end)
1982 {
1983  RTSPState *rt = s->priv_data;
1984  RTSPStream *rtsp_st;
1985  int n, i, ret, timeout_cnt = 0;
1986  struct pollfd *p = rt->p;
1987  int *fds = NULL, fdsnum, fdsidx;
1988 
1989  if (!p) {
1990  p = rt->p = av_malloc_array(2 * (rt->nb_rtsp_streams + 1), sizeof(struct pollfd));
1991  if (!p)
1992  return AVERROR(ENOMEM);
1993 
1994  if (rt->rtsp_hd) {
1995  p[rt->max_p].fd = ffurl_get_file_handle(rt->rtsp_hd);
1996  p[rt->max_p++].events = POLLIN;
1997  }
1998  for (i = 0; i < rt->nb_rtsp_streams; i++) {
1999  rtsp_st = rt->rtsp_streams[i];
2000  if (rtsp_st->rtp_handle) {
2001  if (ret = ffurl_get_multi_file_handle(rtsp_st->rtp_handle,
2002  &fds, &fdsnum)) {
2003  av_log(s, AV_LOG_ERROR, "Unable to recover rtp ports\n");
2004  return ret;
2005  }
2006  if (fdsnum != 2) {
2007  av_log(s, AV_LOG_ERROR,
2008  "Number of fds %d not supported\n", fdsnum);
2009  return AVERROR_INVALIDDATA;
2010  }
2011  for (fdsidx = 0; fdsidx < fdsnum; fdsidx++) {
2012  p[rt->max_p].fd = fds[fdsidx];
2013  p[rt->max_p++].events = POLLIN;
2014  }
2015  av_freep(&fds);
2016  }
2017  }
2018  }
2019 
2020  for (;;) {
2022  return AVERROR_EXIT;
2023  if (wait_end && wait_end - av_gettime_relative() < 0)
2024  return AVERROR(EAGAIN);
2025  n = poll(p, rt->max_p, POLL_TIMEOUT_MS);
2026  if (n > 0) {
2027  int j = rt->rtsp_hd ? 1 : 0;
2028  timeout_cnt = 0;
2029  for (i = 0; i < rt->nb_rtsp_streams; i++) {
2030  rtsp_st = rt->rtsp_streams[i];
2031  if (rtsp_st->rtp_handle) {
2032  if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
2033  ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
2034  if (ret > 0) {
2035  *prtsp_st = rtsp_st;
2036  return ret;
2037  }
2038  }
2039  j+=2;
2040  }
2041  }
2042 #if CONFIG_RTSP_DEMUXER
2043  if (rt->rtsp_hd && p[0].revents & POLLIN) {
2044  if ((ret = parse_rtsp_message(s)) < 0) {
2045  return ret;
2046  }
2047  }
2048 #endif
2049  } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
2050  return AVERROR(ETIMEDOUT);
2051  } else if (n < 0 && errno != EINTR)
2052  return AVERROR(errno);
2053  }
2054 }
2055 
2056 static int pick_stream(AVFormatContext *s, RTSPStream **rtsp_st,
2057  const uint8_t *buf, int len)
2058 {
2059  RTSPState *rt = s->priv_data;
2060  int i;
2061  if (len < 0)
2062  return len;
2063  if (rt->nb_rtsp_streams == 1) {
2064  *rtsp_st = rt->rtsp_streams[0];
2065  return len;
2066  }
2067  if (len >= 8 && rt->transport == RTSP_TRANSPORT_RTP) {
2068  if (RTP_PT_IS_RTCP(rt->recvbuf[1])) {
2069  int no_ssrc = 0;
2070  for (i = 0; i < rt->nb_rtsp_streams; i++) {
2071  RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
2072  if (!rtpctx)
2073  continue;
2074  if (rtpctx->ssrc == AV_RB32(&buf[4])) {
2075  *rtsp_st = rt->rtsp_streams[i];
2076  return len;
2077  }
2078  if (!rtpctx->ssrc)
2079  no_ssrc = 1;
2080  }
2081  if (no_ssrc) {
2083  "Unable to pick stream for packet - SSRC not known for "
2084  "all streams\n");
2085  return AVERROR(EAGAIN);
2086  }
2087  } else {
2088  for (i = 0; i < rt->nb_rtsp_streams; i++) {
2089  if ((buf[1] & 0x7f) == rt->rtsp_streams[i]->sdp_payload_type) {
2090  *rtsp_st = rt->rtsp_streams[i];
2091  return len;
2092  }
2093  }
2094  }
2095  }
2096  av_log(s, AV_LOG_WARNING, "Unable to pick stream for packet\n");
2097  return AVERROR(EAGAIN);
2098 }
2099 
2100 static int read_packet(AVFormatContext *s,
2101  RTSPStream **rtsp_st, RTSPStream *first_queue_st,
2102  int64_t wait_end)
2103 {
2104  RTSPState *rt = s->priv_data;
2105  int len;
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 = avio_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)
2128  ff_rtp_check_and_send_back_rr((*rtsp_st)->transport_priv, NULL, s->pb, len);
2129  break;
2130  }
2131 
2132  if (len == 0)
2133  return AVERROR_EOF;
2134 
2135  return len;
2136 }
2137 
2139 {
2140  RTSPState *rt = s->priv_data;
2141  int ret, len;
2142  RTSPStream *rtsp_st, *first_queue_st = NULL;
2143  int64_t wait_end = 0;
2144 
2145  if (rt->nb_byes == rt->nb_rtsp_streams)
2146  return AVERROR_EOF;
2147 
2148  /* get next frames from the same RTP packet */
2149  if (rt->cur_transport_priv) {
2150  if (rt->transport == RTSP_TRANSPORT_RDT) {
2151  ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
2152  } else if (rt->transport == RTSP_TRANSPORT_RTP) {
2153  ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
2154  } else if (CONFIG_RTPDEC && rt->ts) {
2155  ret = avpriv_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf + rt->recvbuf_pos, rt->recvbuf_len - rt->recvbuf_pos);
2156  if (ret >= 0) {
2157  rt->recvbuf_pos += ret;
2158  ret = rt->recvbuf_pos < rt->recvbuf_len;
2159  }
2160  } else
2161  ret = -1;
2162  if (ret == 0) {
2163  rt->cur_transport_priv = NULL;
2164  return 0;
2165  } else if (ret == 1) {
2166  return 0;
2167  } else
2168  rt->cur_transport_priv = NULL;
2169  }
2170 
2171 redo:
2172  if (rt->transport == RTSP_TRANSPORT_RTP) {
2173  int i;
2174  int64_t first_queue_time = 0;
2175  for (i = 0; i < rt->nb_rtsp_streams; i++) {
2176  RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
2177  int64_t queue_time;
2178  if (!rtpctx)
2179  continue;
2180  queue_time = ff_rtp_queued_packet_time(rtpctx);
2181  if (queue_time && (queue_time - first_queue_time < 0 ||
2182  !first_queue_time)) {
2183  first_queue_time = queue_time;
2184  first_queue_st = rt->rtsp_streams[i];
2185  }
2186  }
2187  if (first_queue_time) {
2188  wait_end = first_queue_time + s->max_delay;
2189  } else {
2190  wait_end = 0;
2191  first_queue_st = NULL;
2192  }
2193  }
2194 
2195  /* read next RTP packet */
2196  if (!rt->recvbuf) {
2198  if (!rt->recvbuf)
2199  return AVERROR(ENOMEM);
2200  }
2201 
2202  len = read_packet(s, &rtsp_st, first_queue_st, wait_end);
2203  if (len == AVERROR(EAGAIN) && first_queue_st &&
2204  rt->transport == RTSP_TRANSPORT_RTP) {
2206  "max delay reached. need to consume packet\n");
2207  rtsp_st = first_queue_st;
2208  ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
2209  goto end;
2210  }
2211  if (len < 0)
2212  return len;
2213 
2214  if (rt->transport == RTSP_TRANSPORT_RDT) {
2215  ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2216  } else if (rt->transport == RTSP_TRANSPORT_RTP) {
2217  ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2218  if (rtsp_st->feedback) {
2219  AVIOContext *pb = NULL;
2221  pb = s->pb;
2222  ff_rtp_send_rtcp_feedback(rtsp_st->transport_priv, rtsp_st->rtp_handle, pb);
2223  }
2224  if (ret < 0) {
2225  /* Either bad packet, or a RTCP packet. Check if the
2226  * first_rtcp_ntp_time field was initialized. */
2227  RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
2228  if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
2229  /* first_rtcp_ntp_time has been initialized for this stream,
2230  * copy the same value to all other uninitialized streams,
2231  * in order to map their timestamp origin to the same ntp time
2232  * as this one. */
2233  int i;
2234  AVStream *st = NULL;
2235  if (rtsp_st->stream_index >= 0)
2236  st = s->streams[rtsp_st->stream_index];
2237  for (i = 0; i < rt->nb_rtsp_streams; i++) {
2238  RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
2239  AVStream *st2 = NULL;
2240  if (rt->rtsp_streams[i]->stream_index >= 0)
2241  st2 = s->streams[rt->rtsp_streams[i]->stream_index];
2242  if (rtpctx2 && st && st2 &&
2243  rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2244  rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
2245  rtpctx2->rtcp_ts_offset = av_rescale_q(
2246  rtpctx->rtcp_ts_offset, st->time_base,
2247  st2->time_base);
2248  }
2249  }
2250  // Make real NTP start time available in AVFormatContext
2251  if (s->start_time_realtime == AV_NOPTS_VALUE) {
2252  s->start_time_realtime = av_rescale (rtpctx->first_rtcp_ntp_time - (NTP_OFFSET << 32), 1000000, 1LL << 32);
2253  if (rtpctx->st) {
2254  s->start_time_realtime -=
2255  av_rescale (rtpctx->rtcp_ts_offset,
2256  (uint64_t) rtpctx->st->time_base.num * 1000000,
2257  rtpctx->st->time_base.den);
2258  }
2259  }
2260  }
2261  if (ret == -RTCP_BYE) {
2262  rt->nb_byes++;
2263 
2264  av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
2265  rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
2266 
2267  if (rt->nb_byes == rt->nb_rtsp_streams)
2268  return AVERROR_EOF;
2269  }
2270  }
2271  } else if (CONFIG_RTPDEC && rt->ts) {
2272  ret = avpriv_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf, len);
2273  if (ret >= 0) {
2274  if (ret < len) {
2275  rt->recvbuf_len = len;
2276  rt->recvbuf_pos = ret;
2277  rt->cur_transport_priv = rt->ts;
2278  return 1;
2279  } else {
2280  ret = 0;
2281  }
2282  }
2283  } else {
2284  return AVERROR_INVALIDDATA;
2285  }
2286 end:
2287  if (ret < 0)
2288  goto redo;
2289  if (ret == 1)
2290  /* more packets may follow, so we save the RTP context */
2291  rt->cur_transport_priv = rtsp_st->transport_priv;
2292 
2293  return ret;
2294 }
2295 #endif /* CONFIG_RTPDEC */
2296 
2297 #if CONFIG_SDP_DEMUXER
2298 static int sdp_probe(const AVProbeData *p1)
2299 {
2300  const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
2301 
2302  /* we look for a line beginning "c=IN IP" */
2303  while (p < p_end && *p != '\0') {
2304  if (sizeof("c=IN IP") - 1 < p_end - p &&
2305  av_strstart(p, "c=IN IP", NULL))
2306  return AVPROBE_SCORE_EXTENSION;
2307 
2308  while (p < p_end - 1 && *p != '\n') p++;
2309  if (++p >= p_end)
2310  break;
2311  if (*p == '\r')
2312  p++;
2313  }
2314  return 0;
2315 }
2316 
2317 static void append_source_addrs(char *buf, int size, const char *name,
2318  int count, struct RTSPSource **addrs)
2319 {
2320  int i;
2321  if (!count)
2322  return;
2323  av_strlcatf(buf, size, "&%s=%s", name, addrs[0]->addr);
2324  for (i = 1; i < count; i++)
2325  av_strlcatf(buf, size, ",%s", addrs[i]->addr);
2326 }
2327 
2328 static int sdp_read_header(AVFormatContext *s)
2329 {
2330  RTSPState *rt = s->priv_data;
2331  RTSPStream *rtsp_st;
2332  int size, i, err;
2333  char *content;
2334  char url[1024];
2335 
2336  if (!ff_network_init())
2337  return AVERROR(EIO);
2338 
2339  if (s->max_delay < 0) /* Not set by the caller */
2341  if (rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)
2343 
2344  /* read the whole sdp file */
2345  /* XXX: better loading */
2346  content = av_malloc(SDP_MAX_SIZE);
2347  if (!content)
2348  return AVERROR(ENOMEM);
2349  size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
2350  if (size <= 0) {
2351  av_free(content);
2352  return AVERROR_INVALIDDATA;
2353  }
2354  content[size] ='\0';
2355 
2356  err = ff_sdp_parse(s, content);
2357  av_freep(&content);
2358  if (err) goto fail;
2359 
2360  /* open each RTP stream */
2361  for (i = 0; i < rt->nb_rtsp_streams; i++) {
2362  char namebuf[50];
2363  rtsp_st = rt->rtsp_streams[i];
2364 
2365  if (!(rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)) {
2366  AVDictionary *opts = map_to_opts(rt);
2367 
2368  err = getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip,
2369  sizeof(rtsp_st->sdp_ip),
2370  namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
2371  if (err) {
2372  av_log(s, AV_LOG_ERROR, "getnameinfo: %s\n", gai_strerror(err));
2373  err = AVERROR(EIO);
2374  av_dict_free(&opts);
2375  goto fail;
2376  }
2377  ff_url_join(url, sizeof(url), "rtp", NULL,
2378  namebuf, rtsp_st->sdp_port,
2379  "?localport=%d&ttl=%d&connect=%d&write_to_source=%d",
2380  rtsp_st->sdp_port, rtsp_st->sdp_ttl,
2381  rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0,
2382  rt->rtsp_flags & RTSP_FLAG_RTCP_TO_SOURCE ? 1 : 0);
2383 
2384  append_source_addrs(url, sizeof(url), "sources",
2385  rtsp_st->nb_include_source_addrs,
2386  rtsp_st->include_source_addrs);
2387  append_source_addrs(url, sizeof(url), "block",
2388  rtsp_st->nb_exclude_source_addrs,
2389  rtsp_st->exclude_source_addrs);
2390  err = ffurl_open_whitelist(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ,
2392 
2393  av_dict_free(&opts);
2394 
2395  if (err < 0) {
2396  err = AVERROR_INVALIDDATA;
2397  goto fail;
2398  }
2399  }
2400  if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
2401  goto fail;
2402  }
2403  return 0;
2404 fail:
2406  ff_network_close();
2407  return err;
2408 }
2409 
2410 static int sdp_read_close(AVFormatContext *s)
2411 {
2413  ff_network_close();
2414  return 0;
2415 }
2416 
2417 static const AVClass sdp_demuxer_class = {
2418  .class_name = "SDP demuxer",
2419  .item_name = av_default_item_name,
2420  .option = sdp_options,
2421  .version = LIBAVUTIL_VERSION_INT,
2422 };
2423 
2425  .name = "sdp",
2426  .long_name = NULL_IF_CONFIG_SMALL("SDP"),
2427  .priv_data_size = sizeof(RTSPState),
2428  .read_probe = sdp_probe,
2429  .read_header = sdp_read_header,
2431  .read_close = sdp_read_close,
2432  .priv_class = &sdp_demuxer_class,
2433 };
2434 #endif /* CONFIG_SDP_DEMUXER */
2435 
2436 #if CONFIG_RTP_DEMUXER
2437 static int rtp_probe(const AVProbeData *p)
2438 {
2439  if (av_strstart(p->filename, "rtp:", NULL))
2440  return AVPROBE_SCORE_MAX;
2441  return 0;
2442 }
2443 
2444 static int rtp_read_header(AVFormatContext *s)
2445 {
2446  uint8_t recvbuf[RTP_MAX_PACKET_LENGTH];
2447  char host[500], sdp[500];
2448  int ret, port;
2449  URLContext* in = NULL;
2450  int payload_type;
2451  AVCodecParameters *par = NULL;
2452  struct sockaddr_storage addr;
2453  AVIOContext pb;
2454  socklen_t addrlen = sizeof(addr);
2455  RTSPState *rt = s->priv_data;
2456 
2457  if (!ff_network_init())
2458  return AVERROR(EIO);
2459 
2460  ret = ffurl_open_whitelist(&in, s->url, AVIO_FLAG_READ,
2462  if (ret)
2463  goto fail;
2464 
2465  while (1) {
2466  ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
2467  if (ret == AVERROR(EAGAIN))
2468  continue;
2469  if (ret < 0)
2470  goto fail;
2471  if (ret < 12) {
2472  av_log(s, AV_LOG_WARNING, "Received too short packet\n");
2473  continue;
2474  }
2475 
2476  if ((recvbuf[0] & 0xc0) != 0x80) {
2477  av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
2478  "received\n");
2479  continue;
2480  }
2481 
2482  if (RTP_PT_IS_RTCP(recvbuf[1]))
2483  continue;
2484 
2485  payload_type = recvbuf[1] & 0x7f;
2486  break;
2487  }
2488  getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
2489  ffurl_close(in);
2490  in = NULL;
2491 
2492  par = avcodec_parameters_alloc();
2493  if (!par) {
2494  ret = AVERROR(ENOMEM);
2495  goto fail;
2496  }
2497 
2498  if (ff_rtp_get_codec_info(par, payload_type)) {
2499  av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
2500  "without an SDP file describing it\n",
2501  payload_type);
2502  goto fail;
2503  }
2504  if (par->codec_type != AVMEDIA_TYPE_DATA) {
2505  av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
2506  "properly you need an SDP file "
2507  "describing it\n");
2508  }
2509 
2510  av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
2511  NULL, 0, s->url);
2512 
2513  snprintf(sdp, sizeof(sdp),
2514  "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
2515  addr.ss_family == AF_INET ? 4 : 6, host,
2516  par->codec_type == AVMEDIA_TYPE_DATA ? "application" :
2517  par->codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
2518  port, payload_type);
2519  av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
2521 
2522  ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
2523  s->pb = &pb;
2524 
2525  /* sdp_read_header initializes this again */
2526  ff_network_close();
2527 
2528  rt->media_type_mask = (1 << (AVMEDIA_TYPE_SUBTITLE+1)) - 1;
2529 
2530  ret = sdp_read_header(s);
2531  s->pb = NULL;
2532  return ret;
2533 
2534 fail:
2536  if (in)
2537  ffurl_close(in);
2538  ff_network_close();
2539  return ret;
2540 }
2541 
2542 static const AVClass rtp_demuxer_class = {
2543  .class_name = "RTP demuxer",
2544  .item_name = av_default_item_name,
2545  .option = rtp_options,
2546  .version = LIBAVUTIL_VERSION_INT,
2547 };
2548 
2550  .name = "rtp",
2551  .long_name = NULL_IF_CONFIG_SMALL("RTP input"),
2552  .priv_data_size = sizeof(RTSPState),
2553  .read_probe = rtp_probe,
2554  .read_header = rtp_read_header,
2556  .read_close = sdp_read_close,
2557  .flags = AVFMT_NOFILE,
2558  .priv_class = &rtp_demuxer_class,
2559 };
2560 #endif /* CONFIG_RTP_DEMUXER */
char auth[128]
plaintext authorization line (username:password)
Definition: rtsp.h:274
int interleaved_min
interleave ids, if TCP transport; each TCP/RTSP data packet starts with a &#39;$&#39;, stream length and stre...
Definition: rtsp.h:94
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:4728
char crypto_suite[40]
Definition: rtsp.h:478
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:389
#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:581
Bytestream IO Context.
Definition: avio.h:161
Realmedia Data Transport.
Definition: rtsp.h:59
#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:521
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:1611
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:307
#define RTP_MAX_PACKET_LENGTH
Definition: rtpdec.h:36
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1636
AVOption.
Definition: opt.h:246
HTTPS tunneled.
Definition: rtsp.h:45
char source[INET6_ADDRSTRLEN+1]
source IP address
Definition: rtsp.h:116
HTTPAuthType
Authentication types, ordered from weakest to strongest.
Definition: httpauth.h:28
char content_type[64]
Content type header.
Definition: rtsp.h:188
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
const char * filename
Definition: avformat.h:447
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:177
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:318
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:4882
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:587
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
const char * desc
Definition: nvenc.c:68
#define RTSP_DEFAULT_PORT
Definition: rtsp.h:73
Windows Media server.
Definition: rtsp.h:210
struct pollfd * p
Polling array for udp.
Definition: rtsp.h:355
int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
Open RTSP transport context.
Definition: rtsp.c:808
MpegTSContext * avpriv_mpegts_parse_open(AVFormatContext *s)
Definition: mpegts.c:3221
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:3953
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:59
int index
stream index in AVFormatContext
Definition: avformat.h:882
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(const uint8_t *) pi-0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(const int16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(const int16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16,*(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16,*(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(const int32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(const int32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32,*(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32,*(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(const int64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64,*(const int64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64,*(const int64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double *) pi *(INT64_C(1)<< 63)))#define FMT_PAIR_FUNC(out, in) static conv_func_type *const fmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64),};static void cpy1(uint8_t **dst, const uint8_t **src, int len){memcpy(*dst,*src, len);}static void cpy2(uint8_t **dst, const uint8_t **src, int len){memcpy(*dst,*src, 2 *len);}static void cpy4(uint8_t **dst, const uint8_t **src, int len){memcpy(*dst,*src, 4 *len);}static void cpy8(uint8_t **dst, const uint8_t **src, int len){memcpy(*dst,*src, 8 *len);}AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, const int *ch_map, int flags){AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) return NULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) return NULL;if(channels==1){in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);}ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map){switch(av_get_bytes_per_sample(in_fmt)){case 1:ctx->simd_f=cpy1;break;case 2:ctx->simd_f=cpy2;break;case 4:ctx->simd_f=cpy4;break;case 8:ctx->simd_f=cpy8;break;}}if(HAVE_X86ASM &&1) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);return ctx;}void swri_audio_convert_free(AudioConvert **ctx){av_freep(ctx);}int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len){int ch;int off=0;const int os=(out->planar?1:out->ch_count)*out->bps;unsigned misaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask){int planes=in->planar?in->ch_count:1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;}if(ctx->out_simd_align_mask){int planes=out->planar?out->ch_count:1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;}if(ctx->simd_f &&!ctx->ch_map &&!misaligned){off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){if(out->planar==in->planar){int planes=out->planar?out->ch_count:1;for(ch=0;ch< planes;ch++){ctx->simd_f(out-> ch ch
Definition: audioconvert.c:56
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
#define AVIO_FLAG_READ
read-only
Definition: avio.h:654
char * user_agent
User-Agent string.
Definition: rtsp.h:409
char location[4096]
the "Location:" field.
Definition: rtsp.h:153
#define AVIO_FLAG_WRITE
write-only
Definition: avio.h:655
int mode_record
transport set to record data
Definition: rtsp.h:113
enum AVMediaType codec_type
Definition: rtp.c:37
int avio_read_partial(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:717
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:116
UDP/unicast.
Definition: rtsp.h:38
int seq
sequence number
Definition: rtsp.h:145
initialized and sending/receiving data
Definition: rtsp.h:198
char real_challenge[64]
the "RealChallenge1:" field from the server
Definition: rtsp.h:271
const char * key
#define RTSP_FLAG_RTCP_TO_SOURCE
Send RTCP packets to the source address of received packets.
Definition: rtsp.h:423
#define RTSP_RTP_PORT_MAX
Definition: rtsp.h:80
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
#define freeaddrinfo
Definition: network.h:215
static AVPacket pkt
int nb_include_source_addrs
Number of source-specific multicast include source IP addresses (from SDP content) ...
Definition: rtsp.h:455
int ctx_flags
Flags signalling stream properties.
Definition: avformat.h:1407
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:421
char session_id[512]
copy of RTSPMessageHeader->session_id, i.e.
Definition: rtsp.h:246
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:240
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
#define AI_NUMERICHOST
Definition: network.h:184
This struct describes the properties of an encoded stream.
Definition: avcodec.h:3945
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:122
This describes the server response to each RTSP command.
Definition: rtsp.h:128
RTPDemuxContext * ff_rtp_parse_open(AVFormatContext *s1, AVStream *st, int payload_type, int queue_size)
open a new RTP parse context for stream &#39;st&#39;.
Definition: rtpdec.c:538
#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:143
Format I/O context.
Definition: avformat.h:1358
#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:208
int reordering_queue_size
Size of RTP packet reordering queue.
Definition: rtsp.h:404
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:426
int recvbuf_len
Definition: rtsp.h:324
static void interleave(uint8_t *dst, uint8_t *src, int w, int h, int dst_linesize, int src_linesize, enum FilterMode mode, int swap)
Definition: vf_il.c:117
uint64_t first_rtcp_ntp_time
Definition: rtpdec.h:179
#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:361
Standards-compliant RTP.
Definition: rtsp.h:58
uint8_t
char session_id[512]
the "Session:" field.
Definition: rtsp.h:149
#define RTSP_MAX_TRANSPORTS
Definition: rtsp.h:75
#define av_malloc(s)
Opaque data information usually continuous.
Definition: avutil.h:203
int ttl
time-to-live value (required for multicast); the amount of HOPs that packets will be allowed to make ...
Definition: rtsp.h:110
static int get_sockaddr(AVFormatContext *s, const char *buf, struct sockaddr_storage *sock)
Definition: rtsp.c:199
int ff_network_init(void)
Definition: network.c:58
#define AVFMTCTX_NOHEADER
signal that no header is present (streams are added dynamically)
Definition: avformat.h:1302
AVOptions.
AVCodecParameters * avcodec_parameters_alloc(void)
Allocate a new AVCodecParameters and set its fields to default values (unknown/invalid/0).
Definition: utils.c:1992
miscellaneous OS support macros and functions.
int feedback
Enable sending RTCP feedback messages according to RFC 4585.
Definition: rtsp.h:473
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:202
uint16_t ss_family
Definition: network.h:113
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
int id
Format-specific stream ID.
Definition: avformat.h:888
enum AVStreamParseType need_parsing
Definition: avformat.h:1099
#define POLL_TIMEOUT_MS
Definition: rtsp.c:55
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:108
#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:4455
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:1426
int accept_dynamic_rate
Whether the server accepts the x-Dynamic-Rate header.
Definition: rtsp.h:374
URLContext * rtsp_hd_out
Additional output handle, used when input and output are done separately, eg for HTTP tunneling...
Definition: rtsp.h:329
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:438
Custom IO - not a public option for lower_transport_mask, but set in the SDP demuxer based on a flag...
Definition: rtsp.h:46
char * protocol_whitelist
&#39;,&#39; separated list of allowed protocols.
Definition: avformat.h:1918
enum RTSPStatusCode status_code
response code from server
Definition: rtsp.h:132
#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:180
#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:100
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:69
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 &#39;transports&#39; variable below
Definition: rtsp.h:135
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:648
AVInputFormat ff_rtp_demuxer
void ff_rtsp_parse_line(AVFormatContext *s, RTSPMessageHeader *reply, const char *buf, RTSPState *rt, const char *method)
int notice
The "Notice" or "X-Notice" field value.
Definition: rtsp.h:178
#define RTSP_DEFAULT_AUDIO_SAMPLERATE
Definition: rtsp.h:78
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:458
Private data for the RTSP demuxer.
Definition: rtsp.h:219
int64_t last_cmd_time
timestamp of the last RTSP command that we sent to the RTSP server.
Definition: rtsp.h:256
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:290
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:260
#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:1598
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:251
const char * protocol_whitelist
Definition: url.h:49
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
ff_const59 struct AVInputFormat * iformat
The input container format.
Definition: avformat.h:1370
char * url
input or output URL.
Definition: avformat.h:1454
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
const AVOption ff_rtsp_options[]
Definition: rtsp.c:83
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:203
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3949
char reason[256]
The "reason" is meant to specify better the meaning of the error code returned.
Definition: rtsp.h:183
Definition: graph2dot.c:48
URLContext * rtsp_hd
Definition: rtsp.h:221
simple assert() macros that are a bit more flexible than ISO C assert().
enum RTSPControlTransport control_transport
RTSP transport mode, such as plain or tunneled.
Definition: rtsp.h:332
struct RTSPSource ** include_source_addrs
Source-specific multicast include source IP addresses (from SDP content)
Definition: rtsp.h:456
void ff_rtp_parse_set_dynamic_protocol(RTPDemuxContext *s, PayloadContext *ctx, const RTPDynamicProtocolHandler *handler)
Definition: rtpdec.c:574
GLsizei count
Definition: opengl_enc.c:108
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:2002
int64_t rtcp_ts_offset
Definition: rtpdec.h:181
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:120
struct RTSPStream ** rtsp_streams
streams in this session
Definition: rtsp.h:226
char server[64]
the "Server: field, which can be used to identify some special-case servers that are not 100% standar...
Definition: rtsp.h:165
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
Definition: codec_desc.c:3257
int stream_index
corresponding stream index, if any.
Definition: rtsp.h:443
int buf_size
Size of buf except extra allocated bytes.
Definition: avformat.h:449
int seq
RTSP command sequence number.
Definition: rtsp.h:242
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:448
uint8_t * recvbuf
Reusable buffer for receiving packets.
Definition: rtsp.h:340
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1414
#define RTSP_FLAG_CUSTOM_IO
Do all IO via the AVIOContext.
Definition: rtsp.h:422
AVDictionary * opts
Definition: movenc.c:50
#define NI_NUMERICHOST
Definition: network.h:192
#define th
Definition: regdef.h:75
#define LIBAVFORMAT_IDENT
Definition: version.h:46
AVFormatContext * asf_ctx
The following are used for RTP/ASF streams.
Definition: rtsp.h:308
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
int recvbuf_pos
Definition: rtsp.h:323
#define dynarray_add(tab, nb_ptr, elem)
Definition: internal.h:198
int nb_rtsp_streams
number of items in the &#39;rtsp_streams&#39; variable
Definition: rtsp.h:224
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:284
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
Definition: avstring.c:213
int content_length
length of the data following this header
Definition: rtsp.h:130
int max_streams
The maximum number of streams.
Definition: avformat.h:1960
int timeout
The "timeout" comes as part of the server response to the "SETUP" command, in the "Session: <xyz>[;ti...
Definition: rtsp.h:173
#define RTSP_TCP_MAX_PACKET_SIZE
Definition: rtsp.h:76
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:89
RTSP over HTTP (tunneling)
Definition: rtsp.h:70
static void get_word_until_chars(char *buf, int buf_size, const char *sep, const char **pp)
Definition: rtsp.c:142
#define s(width, name)
Definition: cbs_vp9.c:257
int ff_rtsp_tcp_write_packet(AVFormatContext *s, RTSPStream *rtsp_st)
Send buffered packets over TCP.
Definition: rtspenc.c:142
void ff_format_set_url(AVFormatContext *s, char *url)
Set AVFormatContext url field to the provided pointer.
Definition: utils.c:5797
static void get_word(char *buf, int buf_size, const char **pp)
Definition: rtsp.c:168
int n
Definition: avisynth_c.h:760
AVDictionary * metadata
Definition: avformat.h:945
const RTPDynamicProtocolHandler * dynamic_handler
The following are used for dynamic protocols (rtpdec_*.c/rdt.c)
Definition: rtsp.h:466
char crypto_params[100]
Definition: rtsp.h:479
Usually treated as AVMEDIA_TYPE_DATA.
Definition: avutil.h:200
RDTDemuxContext * ff_rdt_parse_open(AVFormatContext *ic, int first_stream_of_set_idx, void *priv_data, const RTPDynamicProtocolHandler *handler)
Allocate and init the RDT parsing context.
Definition: rdt.c:55
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:453
Raw data (over UDP)
Definition: rtsp.h:60
struct MpegTSContext * ts
The following are used for parsing raw mpegts in udp.
Definition: rtsp.h:322
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
void(* close)(PayloadContext *protocol_data)
Free any data needed by the rtp parsing for this dynamic data.
Definition: rtpdec.h:133
int sdp_payload_type
payload type
Definition: rtsp.h:460
int nb_exclude_source_addrs
Number of source-specific multicast exclude source IP addresses (from SDP content) ...
Definition: rtsp.h:457
ff_const59 struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1377
void ffio_free_dyn_buf(AVIOContext **s)
Free a dynamic buffer.
Definition: aviobuf.c:1450
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:530
int ff_rtp_send_rtcp_feedback(RTPDemuxContext *s, URLContext *fd, AVIOContext *avio)
Definition: rtpdec.c:470
Stream structure.
Definition: avformat.h:881
#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:337
enum RTSPLowerTransport lower_transport
the negotiated network layer transport protocol; e.g.
Definition: rtsp.h:263
char addr[128]
Source-specific multicast include source IP address (from SDP content)
Definition: rtsp.h:429
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
struct sockaddr_storage sdp_ip
IP address (from SDP content)
Definition: rtsp.h:454
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:251
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:738
int ff_check_interrupt(AVIOInterruptCB *cb)
Check if the user has requested to interrupt a blocking function associated with cb.
Definition: avio.c:664
int rtp_port_max
Definition: rtsp.h:389
#define NTP_OFFSET
Definition: internal.h:244
Definition: rtp.h:100
AVIOContext * pb
I/O context.
Definition: avformat.h:1400
int media_type_mask
Mask of all requested media types.
Definition: rtsp.h:384
AVInputFormat ff_sdp_demuxer
int server_port_max
Definition: rtsp.h:106
#define FF_RTP_FLAG_OPTS(ctx, fieldname)
Definition: rtpenc.h:74
#define RTSP_FLAG_OPTS(name, longname)
Definition: rtsp.c:66
uint32_t ssrc
SSRC for this stream, to allow identifying RTCP packets before the first RTP packet.
Definition: rtsp.h:476
#define RTSP_FLAG_FILTER_SRC
Filter incoming UDP packets - receive packets only from the right source address and port...
Definition: rtsp.h:416
enum AVCodecID codec_id
Definition: rtpdec.h:118
enum RTSPTransport transport
the negotiated data/packet transport protocol; e.g.
Definition: rtsp.h:259
void * buf
Definition: avisynth_c.h:766
Definition: url.h:38
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
#define RTSPS_DEFAULT_PORT
Definition: rtsp.h:74
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:656
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:70
int rtsp_flags
Various option flags for the RTSP muxer/demuxer.
Definition: rtsp.h:379
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31))))#define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac){}void ff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map){AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;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);return NULL;}return ac;}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;}else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->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);return ac;}int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){int use_generic=1;int len=in->nb_samples;int p;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
int client_port_max
Definition: rtsp.h:102
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:354
void * priv_data
Definition: url.h:41
PayloadContext * dynamic_protocol_context
private data associated with the dynamic protocol
Definition: rtsp.h:469
char last_reply[2048]
The last reply of the server to a RTSP command.
Definition: rtsp.h:280
#define gai_strerror
Definition: network.h:222
not initialized
Definition: rtsp.h:197
int64_t range_end
Definition: rtsp.h:139
enum RTSPTransport transport
data/packet transport protocol; e.g.
Definition: rtsp.h:119
int avpriv_mpegts_parse_packet(MpegTSContext *ts, AVPacket *pkt, const uint8_t *buf, int len)
Definition: mpegts.c:3240
char real_challenge[64]
the "RealChallenge1:" field from the server
Definition: rtsp.h:156
AVMediaType
Definition: avutil.h:199
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:755
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:750
void ff_rtsp_close_streams(AVFormatContext *s)
Close and free all streams within the RTSP (de)muxer.
Definition: rtsp.c:772
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&#39;t hear from them...
Definition: rtpdec.c:299
#define s1
Definition: regdef.h:38
const char * name
Name of the codec described by this descriptor.
Definition: avcodec.h:724
#define snprintf
Definition: snprintf.h:34
#define AVPROBE_SCORE_EXTENSION
score for file extension
Definition: avformat.h:456
int max_p
Definition: rtsp.h:356
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:4389
int buffer_size
Definition: rtsp.h:412
This structure contains the data a format has to probe a file.
Definition: avformat.h:446
#define RTSP_DEFAULT_NB_AUDIO_CHANNELS
Definition: rtsp.h:77
misc parsing utilities
char * ff_http_auth_create_response(HTTPAuthState *state, const char *auth, const char *path, const char *method)
Definition: httpauth.c:245
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:94
#define RTP_PT_IS_RTCP(x)
Definition: rtp.h:110
mfxU16 profile
Definition: qsvenc.c:44
This struct describes the properties of a single codec described by an AVCodecID. ...
Definition: avcodec.h:716
void avpriv_report_missing_feature(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
int64_t av_gettime_relative(void)
Get the current time in microseconds since some unspecified starting point.
Definition: time.c:56
#define flags(name, subs,...)
Definition: cbs_av1.c:561
enum RTSPServerType server_type
brand of server that we&#39;re talking to; e.g.
Definition: rtsp.h:268
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:139
int64_t start_time
Position of the first frame of the component, in AV_TIME_BASE fractional seconds. ...
Definition: avformat.h:1463
enum RTSPClientState state
indicator of whether we are currently receiving data from the server.
Definition: rtsp.h:232
static int read_probe(const AVProbeData *pd)
Definition: jvdec.c:55
int sample_rate
Audio only.
Definition: avcodec.h:4063
#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:458
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:214
Main libavformat public API header.
static const AVOption sdp_options[]
Definition: rtsp.c:113
const OptionDef options[]
Definition: ffmpeg_opt.c:3362
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:129
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:463
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
int need_subscription
The following are used for Real stream selection.
Definition: rtsp.h:289
int av_dict_set_int(AVDictionary **pm, const char *key, int64_t value, int flags)
Convenience wrapper for av_dict_set that converts the value to a string and stores it...
Definition: dict.c:147
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:60
char default_lang[4]
Definition: rtsp.h:411
void avformat_close_input(AVFormatContext **s)
Close an opened input AVFormatContext.
Definition: utils.c:4427
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&#39;re reading data interleave...
int stimeout
timeout of socket i/o operations.
Definition: rtsp.h:399
#define getnameinfo
Definition: network.h:216
#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:161
TCP; interleaved in RTSP.
Definition: rtsp.h:39
HTTPAuthState auth_state
authentication state
Definition: rtsp.h:277
int len
#define RTSP_RTP_PORT_MIN
Definition: rtsp.h:79
char control_url[1024]
url for this stream (from SDP)
Definition: rtsp.h:449
void * priv_data
Format private data.
Definition: avformat.h:1386
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:593
void ff_rtp_parse_close(RTPDemuxContext *s)
Definition: rtpdec.c:882
int channels
Audio only.
Definition: avcodec.h:4059
int sdp_ttl
IP Time-To-Live (from SDP content)
Definition: rtsp.h:459
#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:1247
char * protocol_blacklist
&#39;,&#39; separated list of disallowed protocols.
Definition: avformat.h:1953
int ai_flags
Definition: network.h:135
int64_t duration
Duration of the stream, in AV_TIME_BASE fractional seconds.
Definition: avformat.h:1473
Realmedia-style server.
Definition: rtsp.h:209
int lower_transport_mask
A mask with all requested transport methods.
Definition: rtsp.h:345
#define av_freep(p)
void INT64 start
Definition: avisynth_c.h:766
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:654
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:120
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1028
#define av_malloc_array(a, b)
int pkt_size
Definition: rtsp.h:413
FFmpeg currently uses a custom build this text attempts to document some of its obscure features and options Makefile the full command issued by make and its output will be shown on the screen DBG Preprocess x86 external assembler files to a dbg asm file in the object which then gets compiled Helps in developing those assembler files DESTDIR Destination directory for the install useful to prepare packages or install FFmpeg in cross environments GEN Set to ‘1’ to generate the missing or mismatched references Makefile builds all the libraries and the executables fate Run the fate test note that you must have installed it fate list List all fate regression test targets install Install headers
Definition: build_system.txt:1
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:910
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
int interleaved_max
Definition: rtsp.h:447
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:869
struct sockaddr_storage destination
destination IP address
Definition: rtsp.h:115
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:101
void avpriv_mpegts_parse_close(MpegTSContext *ts)
Definition: mpegts.c:3265
AVStream * st
Definition: rtpdec.h:151
const RTPDynamicProtocolHandler * ff_rtp_handler_find_by_id(int id, enum AVMediaType codec_type)
Find a registered rtp dynamic protocol handler with a matching codec ID.
Definition: rtpdec.c:160
#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:447
This structure stores compressed data.
Definition: avcodec.h:1454
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:1215
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:106
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:449
static const AVOption rtp_options[]
Definition: rtsp.c:122
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
URLContext * rtp_handle
RTP stream handle (if UDP)
Definition: rtsp.h:439
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
#define OFFSET(x)
Definition: rtsp.c:62
const RTPDynamicProtocolHandler * ff_rtp_handler_find_by_name(const char *name, enum AVMediaType codec_type)
Find a registered rtp dynamic protocol handler with the specified name.
Definition: rtpdec.c:146
int port_min
UDP multicast port range; the ports to which we should connect to receive multicast UDP data...
Definition: rtsp.h:98
void * transport_priv
RTP/RDT parse context if input, RTP AVFormatContext if output.
Definition: rtsp.h:440
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:102
const char * name
Definition: opengl_enc.c:102