lavf: Add functions for SRTP decryption/encryption
[libav.git] / libavformat / rtsp.c
CommitLineData
1617ad97 1/*
93ced3e8 2 * RTSP/SDP client
406792e7 3 * Copyright (c) 2002 Fabrice Bellard
1617ad97 4 *
2912e87a 5 * This file is part of Libav.
b78e7197 6 *
2912e87a 7 * Libav is free software; you can redistribute it and/or
1617ad97
FB
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
1617ad97 11 *
2912e87a 12 * Libav is distributed in the hope that it will be useful,
1617ad97
FB
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
2912e87a 18 * License along with Libav; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1617ad97 20 */
245976da 21
f9337897 22#include "libavutil/base64.h"
245976da 23#include "libavutil/avstring.h"
6a5d31ac 24#include "libavutil/intreadwrite.h"
0ebcdf5c 25#include "libavutil/mathematics.h"
9fcae973 26#include "libavutil/parseutils.h"
f5d33f52 27#include "libavutil/random_seed.h"
d2d67e42 28#include "libavutil/dict.h"
d450cc4f 29#include "libavutil/opt.h"
c4ef6a3e 30#include "libavutil/time.h"
1617ad97 31#include "avformat.h"
e731b8d8 32#include "avio_internal.h"
1617ad97 33
a8475bbd
LB
34#if HAVE_POLL_H
35#include <poll.h>
6ad1c9c9 36#endif
e4a9e3cc 37#include "internal.h"
42572ef5 38#include "network.h"
cbfa66d0 39#include "os_support.h"
f5d33f52 40#include "http.h"
c971ff19 41#include "rtsp.h"
1617ad97 42
302879cb 43#include "rtpdec.h"
e9dea59f 44#include "rdt.h"
965a3ddb 45#include "rtpdec_formats.h"
a493f80a 46#include "rtpenc_chain.h"
5652bb94 47#include "url.h"
17fff881 48#include "rtpenc.h"
1243c722 49#include "mpegts.h"
4934884a 50
1617ad97
FB
51//#define DEBUG
52
a8475bbd 53/* Timeout values for socket poll, in ms,
9cba6f5f 54 * and read_packet(), in seconds */
a8475bbd 55#define POLL_TIMEOUT_MS 100
9cba6f5f 56#define READ_PACKET_TIMEOUT_S 10
a8475bbd 57#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS
91af5601 58#define SDP_MAX_SIZE 16384
96a7c975 59#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
ccfa8aa2 60#define DEFAULT_REORDERING_DELAY 100000
9cba6f5f 61
2c9aa024
MS
62#define OFFSET(x) offsetof(RTSPState, x)
63#define DEC AV_OPT_FLAG_DECODING_PARAM
eca4850c 64#define ENC AV_OPT_FLAG_ENCODING_PARAM
3a6765fb
MS
65
66#define RTSP_FLAG_OPTS(name, longname) \
d58dd4b5 67 { name, longname, OFFSET(rtsp_flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, DEC, "rtsp_flags" }, \
124134e4
MS
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 { "listen", "Wait for incoming connections", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_LISTEN}, 0, 0, DEC, "rtsp_flags" }
3a6765fb 70
f011fcd6 71#define RTSP_MEDIATYPE_OPTS(name, longname) \
d58dd4b5 72 { name, longname, OFFSET(media_type_mask), AV_OPT_TYPE_FLAGS, { .i64 = (1 << (AVMEDIA_TYPE_DATA+1)) - 1 }, INT_MIN, INT_MAX, DEC, "allowed_media_types" }, \
124134e4
MS
73 { "video", "Video", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_VIDEO}, 0, 0, DEC, "allowed_media_types" }, \
74 { "audio", "Audio", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_AUDIO}, 0, 0, DEC, "allowed_media_types" }, \
75 { "data", "Data", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_DATA}, 0, 0, DEC, "allowed_media_types" }
f011fcd6 76
3f055f8f
MS
77#define RTSP_REORDERING_OPTS() \
78 { "reorder_queue_size", "Number of packets to buffer for handling of reordered packets", OFFSET(reordering_queue_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, DEC }
79
17fff881 80const AVOption ff_rtsp_options[] = {
e6153f17 81 { "initial_pause", "Don't start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, DEC },
5354a904 82 FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags),
d58dd4b5 83 { "rtsp_transport", "RTSP transport protocols", OFFSET(lower_transport_mask), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, DEC|ENC, "rtsp_transport" }, \
124134e4
MS
84 { "udp", "UDP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
85 { "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
86 { "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, "rtsp_transport" },
87 { "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {.i64 = (1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, "rtsp_transport" },
3a6765fb 88 RTSP_FLAG_OPTS("rtsp_flags", "RTSP flags"),
f011fcd6 89 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
e6153f17
MS
90 { "min_port", "Minimum local UDP port", OFFSET(rtp_port_min), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MIN}, 0, 65535, DEC|ENC },
91 { "max_port", "Maximum local UDP port", OFFSET(rtp_port_max), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MAX}, 0, 65535, DEC|ENC },
92 { "timeout", "Maximum timeout (in seconds) to wait for incoming connections. -1 is infinite. Implies flag listen", OFFSET(initial_timeout), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, DEC },
3f055f8f 93 RTSP_REORDERING_OPTS(),
17fff881
MS
94 { NULL },
95};
96
51369f28
MS
97static const AVOption sdp_options[] = {
98 RTSP_FLAG_OPTS("sdp_flags", "SDP flags"),
e96406ed 99 { "custom_io", "Use custom IO", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_CUSTOM_IO}, 0, 0, DEC, "rtsp_flags" },
f011fcd6 100 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
3f055f8f 101 RTSP_REORDERING_OPTS(),
51369f28
MS
102 { NULL },
103};
104
105static const AVOption rtp_options[] = {
106 RTSP_FLAG_OPTS("rtp_flags", "RTP flags"),
3f055f8f 107 RTSP_REORDERING_OPTS(),
51369f28
MS
108 { NULL },
109};
110
1ef36a70
RB
111static void get_word_until_chars(char *buf, int buf_size,
112 const char *sep, const char **pp)
1617ad97
FB
113{
114 const char *p;
115 char *q;
116
117 p = *pp;
30619e6e 118 p += strspn(p, SPACE_CHARS);
1617ad97
FB
119 q = buf;
120 while (!strchr(sep, *p) && *p != '\0') {
121 if ((q - buf) < buf_size - 1)
122 *q++ = *p;
123 p++;
124 }
125 if (buf_size > 0)
126 *q = '\0';
127 *pp = p;
128}
129
1ef36a70
RB
130static void get_word_sep(char *buf, int buf_size, const char *sep,
131 const char **pp)
1617ad97 132{
1ef36a70
RB
133 if (**pp == '/') (*pp)++;
134 get_word_until_chars(buf, buf_size, sep, pp);
135}
1617ad97 136
1ef36a70
RB
137static void get_word(char *buf, int buf_size, const char **pp)
138{
139 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
140}
141
8bf0f969
MS
142/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
143 * and end time.
144 * Used for seeking in the rtp stream.
145 */
146static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
147{
148 char buf[256];
149
150 p += strspn(p, SPACE_CHARS);
151 if (!av_stristart(p, "npt=", &p))
152 return;
153
154 *start = AV_NOPTS_VALUE;
155 *end = AV_NOPTS_VALUE;
156
157 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 158 av_parse_time(start, buf, 1);
8bf0f969
MS
159 if (*p == '-') {
160 p++;
161 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 162 av_parse_time(end, buf, 1);
8bf0f969 163 }
8bf0f969
MS
164}
165
166static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
167{
a92be9b8 168 struct addrinfo hints = { 0 }, *ai = NULL;
8bf0f969
MS
169 hints.ai_flags = AI_NUMERICHOST;
170 if (getaddrinfo(buf, NULL, &hints, &ai))
171 return -1;
172 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
173 freeaddrinfo(ai);
174 return 0;
175}
176
44b70ce5 177#if CONFIG_RTPDEC
003eb642
MS
178static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
179 RTSPStream *rtsp_st, AVCodecContext *codec)
180{
181 if (!handler)
182 return;
183 codec->codec_id = handler->codec_id;
184 rtsp_st->dynamic_handler = handler;
4b3dc857 185 if (handler->alloc) {
9261e6cf 186 rtsp_st->dynamic_protocol_context = handler->alloc();
4b3dc857
MS
187 if (!rtsp_st->dynamic_protocol_context)
188 rtsp_st->dynamic_handler = NULL;
189 }
003eb642
MS
190}
191
c8965800 192/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 193static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 194 AVStream *st, RTSPStream *rtsp_st,
c8965800 195 int payload_type, const char *p)
93ced3e8 196{
86b6e387 197 AVCodecContext *codec = st->codec;
93ced3e8 198 char buf[256];
d1ccf0e0
RD
199 int i;
200 AVCodec *c;
7b49ce2e 201 const char *c_name;
93ced3e8 202
3900d53f 203 /* See if we can handle this kind of payload.
9d50d396
RB
204 * The space should normally not be there but some Real streams or
205 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
206 * have a trailing space. */
207 get_word_sep(buf, sizeof(buf), "/ ", &p);
6099543a
MS
208 if (payload_type < RTP_PT_PRIVATE) {
209 /* We are in a standard case
210 * (from http://www.iana.org/assignments/rtp-parameters). */
6099543a
MS
211 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
212 }
213
36ef5369 214 if (codec->codec_id == AV_CODEC_ID_NONE) {
003eb642
MS
215 RTPDynamicProtocolHandler *handler =
216 ff_rtp_handler_find_by_name(buf, codec->codec_type);
217 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
218 /* If no dynamic handler was found, check with the list of standard
219 * allocated types, if such a stream for some reason happens to
220 * use a private payload type. This isn't handled in rtpdec.c, since
221 * the format name from the rtpmap line never is passed into rtpdec. */
222 if (!rtsp_st->dynamic_handler)
223 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
224 }
225
226 c = avcodec_find_decoder(codec->codec_id);
227 if (c && c->name)
7b49ce2e 228 c_name = c->name;
d1ccf0e0 229 else
170870b7 230 c_name = "(null)";
d1ccf0e0 231
7515ed0c
RB
232 get_word_sep(buf, sizeof(buf), "/", &p);
233 i = atoi(buf);
234 switch (codec->codec_type) {
72415b2a 235 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
236 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
237 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
238 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
239 if (i > 0) {
240 codec->sample_rate = i;
c3f9ebf7 241 avpriv_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
242 get_word_sep(buf, sizeof(buf), "/", &p);
243 i = atoi(buf);
244 if (i > 0)
245 codec->channels = i;
d1ccf0e0 246 }
7515ed0c
RB
247 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
248 codec->sample_rate);
249 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
250 codec->channels);
251 break;
72415b2a 252 case AVMEDIA_TYPE_VIDEO:
7515ed0c 253 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387 254 if (i > 0)
c3f9ebf7 255 avpriv_set_pts_info(st, 32, 1, i);
7515ed0c
RB
256 break;
257 default:
258 break;
259 }
25836606
MS
260 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->init)
261 rtsp_st->dynamic_handler->init(s, st->index,
262 rtsp_st->dynamic_protocol_context);
7515ed0c 263 return 0;
93ced3e8
FB
264}
265
c2bfd816 266/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
267 * is broken out as a function because it is used in rtp_h264.c, which is
268 * forthcoming. */
3307e6ea 269int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 270 char *value, int value_size)
d0deedcb 271{
30619e6e 272 *p += strspn(*p, SPACE_CHARS);
c8965800 273 if (**p) {
d0deedcb
RM
274 get_word_sep(attr, attr_size, "=", p);
275 if (**p == '=')
276 (*p)++;
277 get_word_sep(value, value_size, ";", p);
278 if (**p == ';')
279 (*p)++;
280 return 1;
281 }
282 return 0;
283}
284
93ced3e8
FB
285typedef struct SDPParseState {
286 /* SDP only */
3fbd12d1 287 struct sockaddr_storage default_ip;
c8965800
RB
288 int default_ttl;
289 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
290} SDPParseState;
291
292static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
293 int letter, const char *buf)
294{
8b1ab7bf 295 RTSPState *rt = s->priv_data;
1617ad97
FB
296 char buf1[64], st_type[64];
297 const char *p;
72415b2a 298 enum AVMediaType codec_type;
fb65d2ca 299 int payload_type, i;
1617ad97
FB
300 AVStream *st;
301 RTSPStream *rtsp_st;
3fbd12d1 302 struct sockaddr_storage sdp_ip;
93ced3e8
FB
303 int ttl;
304
dfd2a005 305 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
306
307 p = buf;
cb760a47
RB
308 if (s1->skip_media && letter != 'm')
309 return;
c8965800 310 switch (letter) {
93ced3e8
FB
311 case 'c':
312 get_word(buf1, sizeof(buf1), &p);
313 if (strcmp(buf1, "IN") != 0)
314 return;
315 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 316 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
317 return;
318 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 319 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
320 return;
321 ttl = 16;
322 if (*p == '/') {
323 p++;
324 get_word_sep(buf1, sizeof(buf1), "/", &p);
325 ttl = atoi(buf1);
326 }
327 if (s->nb_streams == 0) {
328 s1->default_ip = sdp_ip;
329 s1->default_ttl = ttl;
330 } else {
d9c0510e 331 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
332 rtsp_st->sdp_ip = sdp_ip;
333 rtsp_st->sdp_ttl = ttl;
334 }
335 break;
1617ad97 336 case 's':
d2d67e42 337 av_dict_set(&s->metadata, "title", p, 0);
1617ad97
FB
338 break;
339 case 'i':
340 if (s->nb_streams == 0) {
d2d67e42 341 av_dict_set(&s->metadata, "comment", p, 0);
1617ad97
FB
342 break;
343 }
344 break;
345 case 'm':
346 /* new stream */
cb760a47 347 s1->skip_media = 0;
f011fcd6 348 codec_type = AVMEDIA_TYPE_UNKNOWN;
1617ad97
FB
349 get_word(st_type, sizeof(st_type), &p);
350 if (!strcmp(st_type, "audio")) {
72415b2a 351 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 352 } else if (!strcmp(st_type, "video")) {
72415b2a 353 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 354 } else if (!strcmp(st_type, "application")) {
72415b2a 355 codec_type = AVMEDIA_TYPE_DATA;
f011fcd6
JB
356 }
357 if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) {
cb760a47 358 s1->skip_media = 1;
1617ad97
FB
359 return;
360 }
1617ad97
FB
361 rtsp_st = av_mallocz(sizeof(RTSPStream));
362 if (!rtsp_st)
363 return;
8b1ab7bf
FB
364 rtsp_st->stream_index = -1;
365 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
366
367 rtsp_st->sdp_ip = s1->default_ip;
368 rtsp_st->sdp_ttl = s1->default_ttl;
369
93ced3e8
FB
370 get_word(buf1, sizeof(buf1), &p); /* port */
371 rtsp_st->sdp_port = atoi(buf1);
372
df8cf076
MS
373 get_word(buf1, sizeof(buf1), &p); /* protocol */
374 if (!strcmp(buf1, "udp"))
375 rt->transport = RTSP_TRANSPORT_RAW;
86d9181c
MS
376 else if (strstr(buf1, "/AVPF") || strstr(buf1, "/SAVPF"))
377 rtsp_st->feedback = 1;
115329f1 378
93ced3e8
FB
379 /* XXX: handle list of formats */
380 get_word(buf1, sizeof(buf1), &p); /* format list */
381 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 382
7ed19d7f 383 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf 384 /* no corresponding stream */
1243c722
MS
385 if (rt->transport == RTSP_TRANSPORT_RAW && !rt->ts && CONFIG_RTPDEC)
386 rt->ts = ff_mpegts_parse_open(s);
45600148
MS
387 } else if (rt->server_type == RTSP_SERVER_WMS &&
388 codec_type == AVMEDIA_TYPE_DATA) {
389 /* RTX stream, a stream that carries all the other actual
390 * audio/video streams. Don't expose this to the callers. */
8b1ab7bf 391 } else {
84ad31ff 392 st = avformat_new_stream(s, NULL);
8b1ab7bf
FB
393 if (!st)
394 return;
84ad31ff 395 st->id = rt->nb_rtsp_streams - 1;
8b1ab7bf 396 rtsp_st->stream_index = st->index;
01f4895c 397 st->codec->codec_type = codec_type;
d1ccf0e0 398 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 399 RTPDynamicProtocolHandler *handler;
8b1ab7bf 400 /* if standard payload type, we can find the codec right now */
bf6d9818 401 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
402 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
403 st->codec->sample_rate > 0)
c3f9ebf7 404 avpriv_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
405 /* Even static payload types may need a custom depacketizer */
406 handler = ff_rtp_handler_find_by_id(
407 rtsp_st->sdp_payload_type, st->codec->codec_type);
408 init_rtp_handler(handler, rtsp_st, st->codec);
25836606
MS
409 if (handler && handler->init)
410 handler->init(s, st->index,
411 rtsp_st->dynamic_protocol_context);
8b1ab7bf
FB
412 }
413 }
1617ad97 414 /* put a default control url */
00eb13e0 415 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 416 sizeof(rtsp_st->control_url));
1617ad97
FB
417 break;
418 case 'a':
00eb13e0
AS
419 if (av_strstart(p, "control:", &p)) {
420 if (s->nb_streams == 0) {
421 if (!strncmp(p, "rtsp://", 7))
422 av_strlcpy(rt->control_uri, p,
423 sizeof(rt->control_uri));
424 } else {
0b6a7ff4
MS
425 char proto[32];
426 /* get the control url */
d9c0510e 427 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 428
0b6a7ff4
MS
429 /* XXX: may need to add full url resolution */
430 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
431 NULL, NULL, 0, p);
432 if (proto[0] == '\0') {
433 /* relative control URL */
434 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
435 av_strlcat(rtsp_st->control_url, "/",
436 sizeof(rtsp_st->control_url));
437 av_strlcat(rtsp_st->control_url, p,
438 sizeof(rtsp_st->control_url));
439 } else
440 av_strlcpy(rtsp_st->control_url, p,
441 sizeof(rtsp_st->control_url));
00eb13e0 442 }
83d14c85 443 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 444 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 445 get_word(buf1, sizeof(buf1), &p);
93ced3e8 446 payload_type = atoi(buf1);
d9c0510e 447 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
45600148
MS
448 if (rtsp_st->stream_index >= 0) {
449 st = s->streams[rtsp_st->stream_index];
450 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
451 }
7fc8ac7f
JA
452 } else if (av_strstart(p, "fmtp:", &p) ||
453 av_strstart(p, "framesize:", &p)) {
93ced3e8 454 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
455 // let dynamic protocol handlers have a stab at the line.
456 get_word(buf1, sizeof(buf1), &p);
457 payload_type = atoi(buf1);
d9c0510e
MS
458 for (i = 0; i < rt->nb_rtsp_streams; i++) {
459 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
460 if (rtsp_st->sdp_payload_type == payload_type &&
461 rtsp_st->dynamic_handler &&
462 rtsp_st->dynamic_handler->parse_sdp_a_line)
463 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
464 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 465 }
c8965800 466 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
467 int64_t start, end;
468
469 // this is so that seeking on a streamed file can work.
470 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
471 s->start_time = start;
472 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
473 s->duration = (end == AV_NOPTS_VALUE) ?
474 AV_NOPTS_VALUE : end - start;
119b4668
RB
475 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
476 if (atoi(p) == 1)
477 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
478 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
479 s->nb_streams > 0) {
480 st = s->streams[s->nb_streams - 1];
481 st->codec->sample_rate = atoi(p);
1a30d541
RB
482 } else {
483 if (rt->server_type == RTSP_SERVER_WMS)
484 ff_wms_parse_sdp_a_line(s, p);
485 if (s->nb_streams > 0) {
45600148
MS
486 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
487
c4a3d032 488 if (rt->server_type == RTSP_SERVER_REAL)
45600148 489 ff_real_parse_sdp_a_line(s, rtsp_st->stream_index, p);
c4a3d032 490
c4a3d032
RB
491 if (rtsp_st->dynamic_handler &&
492 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800 493 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
45600148 494 rtsp_st->stream_index,
c4a3d032 495 rtsp_st->dynamic_protocol_context, buf);
1a30d541 496 }
1617ad97
FB
497 }
498 break;
499 }
500}
501
0526c6f7 502int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 503{
a8475bbd 504 RTSPState *rt = s->priv_data;
1617ad97
FB
505 const char *p;
506 int letter;
9211bcdd
RB
507 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
508 * contain long SDP lines containing complete ASF Headers (several
509 * kB) or arrays of MDPR (RM stream descriptor) headers plus
510 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
511 * buffer is large.
512 *
afcea58c
JA
513 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
514 * in rtpdec_xiph.c. */
373afbaf 515 char buf[16384], *q;
a92be9b8 516 SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state;
115329f1 517
1617ad97 518 p = content;
c8965800 519 for (;;) {
30619e6e 520 p += strspn(p, SPACE_CHARS);
1617ad97
FB
521 letter = *p;
522 if (letter == '\0')
523 break;
524 p++;
525 if (*p != '=')
526 goto next_line;
527 p++;
528 /* get the content */
529 q = buf;
b6892136 530 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
531 if ((q - buf) < sizeof(buf) - 1)
532 *q++ = *p;
533 p++;
534 }
535 *q = '\0';
93ced3e8 536 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
537 next_line:
538 while (*p != '\n' && *p != '\0')
539 p++;
540 if (*p == '\n')
541 p++;
542 }
a8475bbd
LB
543 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
544 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
545 return 0;
546}
44b70ce5 547#endif /* CONFIG_RTPDEC */
1617ad97 548
93e7490e
MS
549void ff_rtsp_undo_setup(AVFormatContext *s)
550{
551 RTSPState *rt = s->priv_data;
552 int i;
553
554 for (i = 0; i < rt->nb_rtsp_streams; i++) {
555 RTSPStream *rtsp_st = rt->rtsp_streams[i];
556 if (!rtsp_st)
557 continue;
558 if (rtsp_st->transport_priv) {
559 if (s->oformat) {
560 AVFormatContext *rtpctx = rtsp_st->transport_priv;
561 av_write_trailer(rtpctx);
562 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
563 uint8_t *ptr;
6dc7d80d 564 avio_close_dyn_buf(rtpctx->pb, &ptr);
93e7490e
MS
565 av_free(ptr);
566 } else {
22a3212e 567 avio_close(rtpctx->pb);
93e7490e 568 }
b22dbb29 569 avformat_free_context(rtpctx);
93e7490e
MS
570 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
571 ff_rdt_parse_close(rtsp_st->transport_priv);
125c6c07 572 else if (rt->transport == RTSP_TRANSPORT_RTP && CONFIG_RTPDEC)
bfc6db44 573 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
574 }
575 rtsp_st->transport_priv = NULL;
576 if (rtsp_st->rtp_handle)
e52a9145 577 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
578 rtsp_st->rtp_handle = NULL;
579 }
580}
581
1ced9da3 582/* close and free RTSP streams */
3307e6ea 583void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 584{
52aa4338 585 RTSPState *rt = s->priv_data;
1ced9da3
LA
586 int i;
587 RTSPStream *rtsp_st;
588
93e7490e 589 ff_rtsp_undo_setup(s);
c8965800 590 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
591 rtsp_st = rt->rtsp_streams[i];
592 if (rtsp_st) {
1ced9da3 593 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
9261e6cf 594 rtsp_st->dynamic_handler->free(
c8965800 595 rtsp_st->dynamic_protocol_context);
ea7f0807 596 av_free(rtsp_st);
1ced9da3
LA
597 }
598 }
599 av_free(rt->rtsp_streams);
600 if (rt->asf_ctx) {
cd3716b9 601 avformat_close_input(&rt->asf_ctx);
1ced9da3 602 }
1243c722
MS
603 if (rt->ts && CONFIG_RTPDEC)
604 ff_mpegts_parse_close(rt->ts);
a8475bbd 605 av_free(rt->p);
96a7c975 606 av_free(rt->recvbuf);
1ced9da3
LA
607}
608
6e71c120 609int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
610{
611 RTSPState *rt = s->priv_data;
612 AVStream *st = NULL;
3f055f8f
MS
613 int reordering_queue_size = rt->reordering_queue_size;
614 if (reordering_queue_size < 0) {
615 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
616 reordering_queue_size = 0;
617 else
618 reordering_queue_size = RTP_REORDER_QUEUE_DEFAULT_SIZE;
619 }
1ced9da3
LA
620
621 /* open the RTP context */
622 if (rtsp_st->stream_index >= 0)
623 st = s->streams[rtsp_st->stream_index];
624 if (!st)
625 s->ctx_flags |= AVFMTCTX_NOHEADER;
626
44b70ce5 627 if (s->oformat && CONFIG_RTSP_MUXER) {
68c81308
MS
628 int ret = ff_rtp_chain_mux_open(&rtsp_st->transport_priv, s, st,
629 rtsp_st->rtp_handle,
8034130e
LB
630 RTSP_TCP_MAX_PACKET_SIZE,
631 rtsp_st->stream_index);
c2bfd816 632 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 633 rtsp_st->rtp_handle = NULL;
68c81308
MS
634 if (ret < 0)
635 return ret;
df8cf076
MS
636 } else if (rt->transport == RTSP_TRANSPORT_RAW) {
637 return 0; // Don't need to open any parser here
44b70ce5 638 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
639 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
640 rtsp_st->dynamic_protocol_context,
641 rtsp_st->dynamic_handler);
44b70ce5 642 else if (CONFIG_RTPDEC)
3f95f0dd 643 rtsp_st->transport_priv = ff_rtp_parse_open(s, st,
58ee0991 644 rtsp_st->sdp_payload_type,
3f055f8f 645 reordering_queue_size);
1ced9da3
LA
646
647 if (!rtsp_st->transport_priv) {
648 return AVERROR(ENOMEM);
df8cf076 649 } else if (rt->transport == RTSP_TRANSPORT_RTP && CONFIG_RTPDEC) {
c8965800 650 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
651 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
652 rtsp_st->dynamic_protocol_context,
653 rtsp_st->dynamic_handler);
1ced9da3
LA
654 }
655 }
656
657 return 0;
658}
659
6f5a3d0a 660#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
661static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
662{
ddce7dab
MR
663 const char *q;
664 char *p;
1617ad97
FB
665 int v;
666
ddce7dab
MR
667 q = *pp;
668 q += strspn(q, SPACE_CHARS);
669 v = strtol(q, &p, 10);
1617ad97
FB
670 if (*p == '-') {
671 p++;
672 *min_ptr = v;
ddce7dab 673 v = strtol(p, &p, 10);
1617ad97
FB
674 *max_ptr = v;
675 } else {
676 *min_ptr = v;
677 *max_ptr = v;
678 }
679 *pp = p;
680}
681
682/* XXX: only one transport specification is parsed */
a9e534d5 683static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
684{
685 char transport_protocol[16];
686 char profile[16];
687 char lower_transport[16];
688 char parameter[16];
689 RTSPTransportField *th;
690 char buf[256];
115329f1 691
1617ad97 692 reply->nb_transports = 0;
115329f1 693
c8965800 694 for (;;) {
30619e6e 695 p += strspn(p, SPACE_CHARS);
1617ad97
FB
696 if (*p == '\0')
697 break;
698
699 th = &reply->transports[reply->nb_transports];
700
115329f1 701 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 702 "/", &p);
bb3244de 703 if (!av_strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
704 get_word_sep(profile, sizeof(profile), "/;,", &p);
705 lower_transport[0] = '\0';
706 /* rtp/avp/<protocol> */
707 if (*p == '/') {
7ecc634e
LB
708 get_word_sep(lower_transport, sizeof(lower_transport),
709 ";,", &p);
119b4668
RB
710 }
711 th->transport = RTSP_TRANSPORT_RTP;
bb3244de
RD
712 } else if (!av_strcasecmp (transport_protocol, "x-pn-tng") ||
713 !av_strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 714 /* x-pn-tng/<protocol> */
e1502118
LB
715 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
716 profile[0] = '\0';
119b4668 717 th->transport = RTSP_TRANSPORT_RDT;
df8cf076
MS
718 } else if (!av_strcasecmp(transport_protocol, "raw")) {
719 get_word_sep(profile, sizeof(profile), "/;,", &p);
720 lower_transport[0] = '\0';
721 /* raw/raw/<protocol> */
722 if (*p == '/') {
723 get_word_sep(lower_transport, sizeof(lower_transport),
724 ";,", &p);
725 }
726 th->transport = RTSP_TRANSPORT_RAW;
1617ad97 727 }
bb3244de 728 if (!av_strcasecmp(lower_transport, "TCP"))
90abbdba 729 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 730 else
90abbdba 731 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 732
1617ad97
FB
733 if (*p == ';')
734 p++;
735 /* get each parameter */
736 while (*p != '\0' && *p != ',') {
737 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
738 if (!strcmp(parameter, "port")) {
739 if (*p == '=') {
740 p++;
741 rtsp_parse_range(&th->port_min, &th->port_max, &p);
742 }
743 } else if (!strcmp(parameter, "client_port")) {
744 if (*p == '=') {
745 p++;
115329f1 746 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
747 &th->client_port_max, &p);
748 }
749 } else if (!strcmp(parameter, "server_port")) {
750 if (*p == '=') {
751 p++;
115329f1 752 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
753 &th->server_port_max, &p);
754 }
755 } else if (!strcmp(parameter, "interleaved")) {
756 if (*p == '=') {
757 p++;
115329f1 758 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
759 &th->interleaved_max, &p);
760 }
761 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
762 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
763 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
764 } else if (!strcmp(parameter, "ttl")) {
765 if (*p == '=') {
f21d5c90 766 char *end;
1617ad97 767 p++;
f21d5c90
MS
768 th->ttl = strtol(p, &end, 10);
769 p = end;
1617ad97
FB
770 }
771 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
772 if (*p == '=') {
773 p++;
774 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 775 get_sockaddr(buf, &th->destination);
1617ad97 776 }
619298a8
JW
777 } else if (!strcmp(parameter, "source")) {
778 if (*p == '=') {
779 p++;
780 get_word_sep(buf, sizeof(buf), ";,", &p);
781 av_strlcpy(th->source, buf, sizeof(th->source));
782 }
45b06858
JO
783 } else if (!strcmp(parameter, "mode")) {
784 if (*p == '=') {
785 p++;
786 get_word_sep(buf, sizeof(buf), ";, ", &p);
787 if (!strcmp(buf, "record") ||
788 !strcmp(buf, "receive"))
789 th->mode_record = 1;
790 }
1617ad97 791 }
619298a8 792
1617ad97
FB
793 while (*p != ';' && *p != '\0' && *p != ',')
794 p++;
795 if (*p == ';')
796 p++;
797 }
798 if (*p == ',')
799 p++;
800
801 reply->nb_transports++;
802 }
803}
804
29db7c3a
MS
805static void handle_rtp_info(RTSPState *rt, const char *url,
806 uint32_t seq, uint32_t rtptime)
807{
808 int i;
809 if (!rtptime || !url[0])
810 return;
811 if (rt->transport != RTSP_TRANSPORT_RTP)
812 return;
813 for (i = 0; i < rt->nb_rtsp_streams; i++) {
814 RTSPStream *rtsp_st = rt->rtsp_streams[i];
815 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
816 if (!rtpctx)
817 continue;
818 if (!strcmp(rtsp_st->control_url, url)) {
819 rtpctx->base_timestamp = rtptime;
820 break;
821 }
822 }
823}
824
825static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
826{
827 int read = 0;
828 char key[20], value[1024], url[1024] = "";
829 uint32_t seq = 0, rtptime = 0;
830
831 for (;;) {
832 p += strspn(p, SPACE_CHARS);
833 if (!*p)
834 break;
835 get_word_sep(key, sizeof(key), "=", &p);
836 if (*p != '=')
837 break;
838 p++;
839 get_word_sep(value, sizeof(value), ";, ", &p);
840 read++;
841 if (!strcmp(key, "url"))
842 av_strlcpy(url, value, sizeof(url));
843 else if (!strcmp(key, "seq"))
4515f9b5 844 seq = strtoul(value, NULL, 10);
29db7c3a 845 else if (!strcmp(key, "rtptime"))
4515f9b5 846 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
847 if (*p == ',') {
848 handle_rtp_info(rt, url, seq, rtptime);
849 url[0] = '\0';
850 seq = rtptime = 0;
851 read = 0;
852 }
853 if (*p)
854 p++;
855 }
856 if (read > 0)
857 handle_rtp_info(rt, url, seq, rtptime);
858}
859
2626308a 860void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 861 RTSPState *rt, const char *method)
1617ad97
FB
862{
863 const char *p;
864
865 /* NOTE: we do case independent match for broken servers */
866 p = buf;
f7d78f36 867 if (av_stristart(p, "Session:", &p)) {
30e79845 868 int t;
1617ad97 869 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
870 if (av_stristart(p, ";timeout=", &p) &&
871 (t = strtol(p, NULL, 10)) > 0) {
872 reply->timeout = t;
873 }
f7d78f36 874 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 875 reply->content_length = strtol(p, NULL, 10);
f7d78f36 876 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 877 rtsp_parse_transport(reply, p);
f7d78f36 878 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 879 reply->seq = strtol(p, NULL, 10);
f7d78f36 880 } else if (av_stristart(p, "Range:", &p)) {
31693e00 881 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 882 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 883 p += strspn(p, SPACE_CHARS);
30aa6aed 884 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 885 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 886 p += strspn(p, SPACE_CHARS);
7a86bafa 887 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
888 } else if (av_stristart(p, "Notice:", &p) ||
889 av_stristart(p, "X-Notice:", &p)) {
890 reply->notice = strtol(p, NULL, 10);
d243ba30 891 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 892 p += strspn(p, SPACE_CHARS);
d243ba30 893 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 894 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 895 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
896 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
897 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 898 p += strspn(p, SPACE_CHARS);
acc9ed14 899 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 900 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 901 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
902 if (method && !strcmp(method, "DESCRIBE"))
903 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
904 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
905 p += strspn(p, SPACE_CHARS);
906 if (method && !strcmp(method, "PLAY"))
907 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
908 } else if (av_stristart(p, "Public:", &p) && rt) {
909 if (strstr(p, "GET_PARAMETER") &&
910 method && !strcmp(method, "OPTIONS"))
911 rt->get_parameter_supported = 1;
30eae325
MS
912 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
913 p += strspn(p, SPACE_CHARS);
914 rt->accept_dynamic_rate = atoi(p);
fcd0298c
JO
915 } else if (av_stristart(p, "Content-Type:", &p)) {
916 p += strspn(p, SPACE_CHARS);
917 av_strlcpy(reply->content_type, p, sizeof(reply->content_type));
1617ad97
FB
918 }
919}
920
b7b8fc34 921/* skip a RTP/TCP interleaved packet */
ec55edba 922void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
923{
924 RTSPState *rt = s->priv_data;
925 int ret, len, len1;
926 uint8_t buf[1024];
927
dce37564 928 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
929 if (ret != 3)
930 return;
80fb8234 931 len = AV_RB16(buf + 1);
67c9cd69 932
dfd2a005 933 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 934
b7b8fc34
FB
935 /* skip payload */
936 while (len > 0) {
937 len1 = len;
938 if (len1 > sizeof(buf))
939 len1 = sizeof(buf);
dce37564 940 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
941 if (ret != len1)
942 return;
943 len -= len1;
944 }
945}
1617ad97 946
3307e6ea 947int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 948 unsigned char **content_ptr,
3df54c6b 949 int return_on_interleaved_data, const char *method)
1617ad97
FB
950{
951 RTSPState *rt = s->priv_data;
952 char buf[4096], buf1[1024], *q;
953 unsigned char ch;
954 const char *p;
1a6b9a98 955 int ret, content_length, line_count = 0, request = 0;
1617ad97
FB
956 unsigned char *content = NULL;
957
1a6b9a98
TW
958start:
959 line_count = 0;
960 request = 0;
961 content = NULL;
d541a7d2 962 memset(reply, 0, sizeof(*reply));
1617ad97 963
1617ad97 964 /* parse reply (XXX: use buffers) */
1617ad97 965 rt->last_reply[0] = '\0';
c8965800 966 for (;;) {
1617ad97 967 q = buf;
c8965800 968 for (;;) {
dce37564 969 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
dfd2a005 970 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 971 if (ret != 1)
2401660d 972 return AVERROR_EOF;
1617ad97
FB
973 if (ch == '\n')
974 break;
b7b8fc34
FB
975 if (ch == '$') {
976 /* XXX: only parse it if first char on line ? */
7e726132
RB
977 if (return_on_interleaved_data) {
978 return 1;
979 } else
ec55edba 980 ff_rtsp_skip_packet(s);
b7b8fc34 981 } else if (ch != '\r') {
1617ad97
FB
982 if ((q - buf) < sizeof(buf) - 1)
983 *q++ = ch;
984 }
985 }
986 *q = '\0';
67c9cd69 987
dfd2a005 988 av_dlog(s, "line='%s'\n", buf);
67c9cd69 989
1617ad97
FB
990 /* test if last line */
991 if (buf[0] == '\0')
992 break;
993 p = buf;
994 if (line_count == 0) {
995 /* get reply code */
996 get_word(buf1, sizeof(buf1), &p);
1a6b9a98
TW
997 if (!strncmp(buf1, "RTSP/", 5)) {
998 get_word(buf1, sizeof(buf1), &p);
999 reply->status_code = atoi(buf1);
1000 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1001 } else {
1002 av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method
1003 get_word(buf1, sizeof(buf1), &p); // object
1004 request = 1;
1005 }
1617ad97 1006 } else {
77223c53 1007 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
1008 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
1009 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
1010 }
1011 line_count++;
1012 }
115329f1 1013
1a6b9a98 1014 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0' && !request)
75e61b0e 1015 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 1016
1617ad97
FB
1017 content_length = reply->content_length;
1018 if (content_length > 0) {
1019 /* leave some room for a trailing '\0' (useful for simple parsing) */
1020 content = av_malloc(content_length + 1);
dce37564 1021 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
1022 content[content_length] = '\0';
1023 }
1024 if (content_ptr)
1025 *content_ptr = content;
e2e2e7dd
AB
1026 else
1027 av_free(content);
7e726132 1028
1a6b9a98
TW
1029 if (request) {
1030 char buf[1024];
1031 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1032 const char* ptr = buf;
1033
1034 if (!strcmp(reply->reason, "OPTIONS")) {
1035 snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n");
1036 if (reply->seq)
1037 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq);
1038 if (reply->session_id[0])
1039 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n",
1040 reply->session_id);
1041 } else {
1042 snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n");
1043 }
1044 av_strlcat(buf, "\r\n", sizeof(buf));
1045
1046 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1047 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1048 ptr = base64buf;
1049 }
1050 ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr));
1051
1052 rt->last_cmd_time = av_gettime();
1053 /* Even if the request from the server had data, it is not the data
1054 * that the caller wants or expects. The memory could also be leaked
1055 * if the actual following reply has content data. */
1056 if (content_ptr)
1057 av_freep(content_ptr);
1058 /* If method is set, this is called from ff_rtsp_send_cmd,
1059 * where a reply to exactly this request is awaited. For
705eeb5e 1060 * callers from within packet receiving, we just want to
1a6b9a98
TW
1061 * return to the caller and go back to receiving packets. */
1062 if (method)
1063 goto start;
1064 return 0;
1065 }
1066
7ed8211b
LB
1067 if (rt->seq != reply->seq) {
1068 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
1069 rt->seq, reply->seq);
1070 }
1071
fccb1770
RB
1072 /* EOS */
1073 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
1074 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 1075 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 1076 rt->state = RTSP_STATE_IDLE;
c8965800 1077 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 1078 return AVERROR(EIO); /* data or server error */
c8965800 1079 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
1080 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
1081 return AVERROR(EPERM);
1082
7e726132 1083 return 0;
1617ad97
FB
1084}
1085
57c4d01e
DEP
1086/**
1087 * Send a command to the RTSP server without waiting for the reply.
1088 *
1089 * @param s RTSP (de)muxer context
1090 * @param method the method for the request
1091 * @param url the target url for the request
1092 * @param headers extra header lines to include in the request
1093 * @param send_content if non-null, the data to send as request body content
1094 * @param send_content_length the length of the send_content data, or 0 if
1095 * send_content is null
1096 *
1097 * @return zero if success, nonzero otherwise
1098 */
1099static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
1100 const char *method, const char *url,
1101 const char *headers,
1102 const unsigned char *send_content,
1103 int send_content_length)
29b9f58b
RB
1104{
1105 RTSPState *rt = s->priv_data;
f5d33f52
JA
1106 char buf[4096], *out_buf;
1107 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 1108
f5d33f52
JA
1109 /* Add in RTSP headers */
1110 out_buf = buf;
29b9f58b 1111 rt->seq++;
b17d11c6
MS
1112 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1113 if (headers)
1114 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1115 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
1116 if (rt->session_id[0] != '\0' && (!headers ||
1117 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1118 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1119 }
aa8bf2fb
MS
1120 if (rt->auth[0]) {
1121 char *str = ff_http_auth_create_response(&rt->auth_state,
1122 rt->auth, url, method);
1123 if (str)
1124 av_strlcat(buf, str, sizeof(buf));
1125 av_free(str);
1126 }
dfd017bf
MS
1127 if (send_content_length > 0 && send_content)
1128 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1129 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1130
f5d33f52
JA
1131 /* base64 encode rtsp if tunneling */
1132 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1133 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1134 out_buf = base64buf;
1135 }
1136
dfd2a005 1137 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 1138
925e908b 1139 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
1140 if (send_content_length > 0 && send_content) {
1141 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1142 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1143 "with content data not supported\n");
1144 return AVERROR_PATCHWELCOME;
1145 }
925e908b 1146 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1147 }
30e79845 1148 rt->last_cmd_time = av_gettime();
d0382374
JA
1149
1150 return 0;
30e79845
RB
1151}
1152
d0382374 1153int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1154 const char *url, const char *headers)
dfd017bf 1155{
d0382374 1156 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1157}
1158
d0382374 1159int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1160 const char *headers, RTSPMessageHeader *reply,
1161 unsigned char **content_ptr)
30e79845 1162{
d0382374 1163 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1164 content_ptr, NULL, 0);
29b9f58b
RB
1165}
1166
d0382374 1167int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1168 const char *method, const char *url,
1169 const char *header,
1170 RTSPMessageHeader *reply,
1171 unsigned char **content_ptr,
1172 const unsigned char *send_content,
1173 int send_content_length)
dfd017bf 1174{
30af0779
MS
1175 RTSPState *rt = s->priv_data;
1176 HTTPAuthType cur_auth_type;
2f96cc1f 1177 int ret, attempts = 0;
30af0779
MS
1178
1179retry:
1180 cur_auth_type = rt->auth_state.auth_type;
d0382374 1181 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1182 send_content,
1183 send_content_length)))
d0382374 1184 return ret;
dfd017bf 1185
3df54c6b 1186 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1187 return ret;
2f96cc1f 1188 attempts++;
30af0779 1189
2f96cc1f
MS
1190 if (reply->status_code == 401 &&
1191 (cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) &&
1192 rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2)
30af0779 1193 goto retry;
d0382374 1194
bf55cf19 1195 if (reply->status_code > 400){
d93fdcbf 1196 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1197 method,
d93fdcbf
LB
1198 reply->status_code,
1199 reply->reason);
bf55cf19
LB
1200 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1201 }
1202
d0382374 1203 return 0;
dfd017bf
MS
1204}
1205
fef5649a 1206int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1207 int lower_transport, const char *real_challenge)
1617ad97
FB
1208{
1209 RTSPState *rt = s->priv_data;
58f09785 1210 int rtx = 0, j, i, err, interleave = 0, port_off;
1617ad97 1211 RTSPStream *rtsp_st;
a9e534d5 1212 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1213 char cmd[2048];
e9dea59f
RB
1214 const char *trans_pref;
1215
119b4668 1216 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f 1217 trans_pref = "x-pn-tng";
df8cf076
MS
1218 else if (rt->transport == RTSP_TRANSPORT_RAW)
1219 trans_pref = "RAW/RAW";
e9dea59f
RB
1220 else
1221 trans_pref = "RTP/AVP";
115329f1 1222
30e79845
RB
1223 /* default timeout: 1 minute */
1224 rt->timeout = 60;
1225
1617ad97
FB
1226 /* for each stream, make the setup request */
1227 /* XXX: we assume the same server is used for the control of each
c8965800 1228 * RTSP stream */
d1ccf0e0 1229
58f09785
DV
1230 /* Choose a random starting offset within the first half of the
1231 * port range, to allow for a number of ports to try even if the offset
1232 * happens to be at the end of the random range. */
1233 port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2);
1234 /* even random offset */
1235 port_off -= port_off & 0x01;
1236
1237 for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1238 char transport[2048];
1239
f75e3da5 1240 /*
f830c9a4
RB
1241 * WMS serves all UDP data over a single connection, the RTX, which
1242 * isn't necessarily the first in the SDP but has to be the first
1243 * to be set up, else the second/third SETUP will fail with a 461.
1244 */
1245 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1246 rt->server_type == RTSP_SERVER_WMS) {
1247 if (i == 0) {
1248 /* rtx first */
1249 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1250 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1251 if (len >= 4 &&
c8965800
RB
1252 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1253 "/rtx"))
f830c9a4
RB
1254 break;
1255 }
1256 if (rtx == rt->nb_rtsp_streams)
1257 return -1; /* no RTX found */
1258 rtsp_st = rt->rtsp_streams[rtx];
1259 } else
1260 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1261 } else
2fea9650 1262 rtsp_st = rt->rtsp_streams[i];
1617ad97 1263
1617ad97 1264 /* RTP/UDP */
90abbdba 1265 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1266 char buf[256];
85fb7b34 1267
f830c9a4
RB
1268 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1269 port = reply->transports[0].client_port_min;
1270 goto have_port;
1271 }
1272
85fb7b34 1273 /* first try in specified port range */
dbb06b8c 1274 while (j <= rt->rtp_port_max) {
bc495bad
DV
1275 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1276 "?localport=%d", j);
1277 /* we will use two ports per rtp stream (rtp and rtcp) */
1278 j += 2;
1279 if (!ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
1280 &s->interrupt_callback, NULL))
1281 goto rtp_opened;
1617ad97 1282 }
85fb7b34 1283
a3b058b7
MS
1284 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1285 err = AVERROR(EIO);
1286 goto fail;
85fb7b34
FB
1287
1288 rtp_opened:
bfc6db44 1289 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1290 have_port:
0ad306bc 1291 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1292 "%s/UDP;", trans_pref);
1293 if (rt->server_type != RTSP_SERVER_REAL)
1294 av_strlcat(transport, "unicast;", sizeof(transport));
1295 av_strlcatf(transport, sizeof(transport),
1296 "client_port=%d", port);
f830c9a4
RB
1297 if (rt->transport == RTSP_TRANSPORT_RTP &&
1298 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1299 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1300 }
1301
1302 /* RTP/TCP */
90abbdba 1303 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1304 /* For WMS streams, the application streams are only used for
090438cc
RB
1305 * UDP. When trying to set it up for TCP streams, the server
1306 * will return an error. Therefore, we skip those streams. */
1307 if (rt->server_type == RTSP_SERVER_WMS &&
45600148
MS
1308 (rtsp_st->stream_index < 0 ||
1309 s->streams[rtsp_st->stream_index]->codec->codec_type ==
1310 AVMEDIA_TYPE_DATA))
090438cc 1311 continue;
0ad306bc 1312 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1313 "%s/TCP;", trans_pref);
895678f8 1314 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1315 av_strlcat(transport, "unicast;", sizeof(transport));
1316 av_strlcatf(transport, sizeof(transport),
1317 "interleaved=%d-%d",
1318 interleave, interleave + 1);
1319 interleave += 2;
1617ad97
FB
1320 }
1321
90abbdba 1322 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1323 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1324 "%s/UDP;multicast", trans_pref);
1617ad97 1325 }
69adcc4f 1326 if (s->oformat) {
bbc80386 1327 av_strlcat(transport, ";mode=record", sizeof(transport));
69adcc4f 1328 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1329 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1330 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1331 snprintf(cmd, sizeof(cmd),
b6892136 1332 "Transport: %s\r\n",
b17d11c6 1333 transport);
76b0d03d
MS
1334 if (rt->accept_dynamic_rate)
1335 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
44b70ce5 1336 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1337 char real_res[41], real_csum[9];
1338 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1339 real_challenge);
1340 av_strlcatf(cmd, sizeof(cmd),
1341 "If-Match: %s\r\n"
1342 "RealChallenge2: %s, sd=%s\r\n",
1343 rt->session_id, real_res, real_csum);
1344 }
b17d11c6 1345 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1346 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1347 err = 1;
1348 goto fail;
7e6ca34f
RB
1349 } else if (reply->status_code != RTSP_STATUS_OK ||
1350 reply->nb_transports != 1) {
1617ad97
FB
1351 err = AVERROR_INVALIDDATA;
1352 goto fail;
1353 }
1354
1355 /* XXX: same protocol for all streams is required */
1356 if (i > 0) {
119b4668
RB
1357 if (reply->transports[0].lower_transport != rt->lower_transport ||
1358 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1359 err = AVERROR_INVALIDDATA;
1360 goto fail;
1361 }
1362 } else {
90abbdba 1363 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1364 rt->transport = reply->transports[0].transport;
1617ad97
FB
1365 }
1366
8c579c1c
MS
1367 /* Fail if the server responded with another lower transport mode
1368 * than what we requested. */
1369 if (reply->transports[0].lower_transport != lower_transport) {
1370 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1371 err = AVERROR_INVALIDDATA;
1372 goto fail;
1617ad97
FB
1373 }
1374
90abbdba
RB
1375 switch(reply->transports[0].lower_transport) {
1376 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1377 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1378 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1379 break;
115329f1 1380
c8965800 1381 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1382 char url[1024], options[30] = "";
c8965800 1383
9867aea5 1384 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
a92c30d7 1385 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1386 /* Use source address if specified */
1387 if (reply->transports[0].source[0]) {
1388 ff_url_join(url, sizeof(url), "rtp", NULL,
1389 reply->transports[0].source,
d8407339 1390 reply->transports[0].server_port_min, "%s", options);
619298a8 1391 } else {
7bac991f 1392 ff_url_join(url, sizeof(url), "rtp", NULL, host,
d8407339 1393 reply->transports[0].server_port_min, "%s", options);
619298a8 1394 }
c8965800 1395 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1396 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1397 err = AVERROR_INVALIDDATA;
1398 goto fail;
1617ad97 1399 }
9c8fa20d
MS
1400 /* Try to initialize the connection state in a
1401 * potential NAT router by sending dummy packets.
1402 * RTP/RTCP dummy packets are used for RDT, too.
1403 */
44b70ce5
MS
1404 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1405 CONFIG_RTPDEC)
bfc6db44 1406 ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1407 break;
c8965800
RB
1408 }
1409 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
6294d708 1410 char url[1024], namebuf[50], optbuf[20] = "";
7934b15d 1411 struct sockaddr_storage addr;
c8965800
RB
1412 int port, ttl;
1413
7934b15d
MS
1414 if (reply->transports[0].destination.ss_family) {
1415 addr = reply->transports[0].destination;
c8965800
RB
1416 port = reply->transports[0].port_min;
1417 ttl = reply->transports[0].ttl;
1418 } else {
7934b15d 1419 addr = rtsp_st->sdp_ip;
c8965800
RB
1420 port = rtsp_st->sdp_port;
1421 ttl = rtsp_st->sdp_ttl;
1422 }
6294d708
MS
1423 if (ttl > 0)
1424 snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
7934b15d
MS
1425 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1426 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1427 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
6294d708 1428 port, "%s", optbuf);
6f1b7b39 1429 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1430 &s->interrupt_callback, NULL) < 0) {
c8965800
RB
1431 err = AVERROR_INVALIDDATA;
1432 goto fail;
1617ad97
FB
1433 }
1434 break;
1435 }
c8965800 1436 }
d1ccf0e0 1437
6e71c120 1438 if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1439 goto fail;
1617ad97
FB
1440 }
1441
62c3c8ca 1442 if (rt->nb_rtsp_streams && reply->timeout > 0)
30e79845
RB
1443 rt->timeout = reply->timeout;
1444
2e889ae4 1445 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1446 rt->need_subscription = 1;
1447
53620bba
RB
1448 return 0;
1449
1450fail:
aeb2de1c 1451 ff_rtsp_undo_setup(s);
53620bba
RB
1452 return err;
1453}
1454
b8c2c41d
JA
1455void ff_rtsp_close_connections(AVFormatContext *s)
1456{
1457 RTSPState *rt = s->priv_data;
e52a9145
AK
1458 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1459 ffurl_close(rt->rtsp_hd);
6217b645 1460 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1461}
1462
3307e6ea 1463int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1464{
1465 RTSPState *rt = s->priv_data;
921da217 1466 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
03f8fc08 1467 int port, err, tcp_fd;
354b7573 1468 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1469 int lower_transport_mask = 0;
2762a7a2 1470 char real_challenge[64] = "";
03f8fc08
MS
1471 struct sockaddr_storage peer;
1472 socklen_t peer_len = sizeof(peer);
57b5555c 1473
dbb06b8c
MS
1474 if (rt->rtp_port_max < rt->rtp_port_min) {
1475 av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1476 "than min port %d\n", rt->rtp_port_max,
1477 rt->rtp_port_min);
1478 return AVERROR(EINVAL);
1479 }
1480
57b5555c
MS
1481 if (!ff_network_init())
1482 return AVERROR(EIO);
eca4850c 1483
4fa57d52 1484 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1485 s->max_delay = s->iformat ? DEFAULT_REORDERING_DELAY : 0;
4fa57d52 1486
f5d33f52 1487 rt->control_transport = RTSP_MODE_PLAIN;
eca4850c
MS
1488 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1489 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1490 rt->control_transport = RTSP_MODE_TUNNEL;
1491 }
1492 /* Only pass through valid flags from here */
1493 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
eca4850c
MS
1494
1495redirect:
1496 lower_transport_mask = rt->lower_transport_mask;
53620bba 1497 /* extract hostname and port */
f3bfe388 1498 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1499 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1500 if (*auth) {
aa8bf2fb 1501 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1502 }
53620bba
RB
1503 if (port < 0)
1504 port = RTSP_DEFAULT_PORT;
1505
90abbdba 1506 if (!lower_transport_mask)
2a1d51c5 1507 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1508
3e24c770 1509 if (s->oformat) {
b7dc88fc
MS
1510 /* Only UDP or TCP - UDP multicast isn't supported. */
1511 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1512 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1513 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1514 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1515 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1516 err = AVERROR(EINVAL);
1517 goto fail;
1518 }
1519 }
1520
4bc5cc23
MS
1521 /* Construct the URI used in request; this is similar to s->filename,
1522 * but with authentication credentials removed and RTSP specific options
1523 * stripped out. */
1524 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1525 host, port, "%s", path);
1526
f5d33f52
JA
1527 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1528 /* set up initial handshake for tunneling */
1529 char httpname[1024];
1530 char sessioncookie[17];
1531 char headers[1024];
1532
10ed37b5 1533 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1534 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1535 av_get_random_seed(), av_get_random_seed());
1536
1537 /* GET requests */
6f1b7b39
MS
1538 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1539 &s->interrupt_callback) < 0) {
f5d33f52
JA
1540 err = AVERROR(EIO);
1541 goto fail;
1542 }
1543
1544 /* generate GET headers */
1545 snprintf(headers, sizeof(headers),
1546 "x-sessioncookie: %s\r\n"
1547 "Accept: application/x-rtsp-tunnelled\r\n"
1548 "Pragma: no-cache\r\n"
1549 "Cache-Control: no-cache\r\n",
1550 sessioncookie);
196bf28c 1551 av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
f5d33f52
JA
1552
1553 /* complete the connection */
ddffc2fd 1554 if (ffurl_connect(rt->rtsp_hd, NULL)) {
f5d33f52
JA
1555 err = AVERROR(EIO);
1556 goto fail;
1557 }
1558
1559 /* POST requests */
6f1b7b39
MS
1560 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
1561 &s->interrupt_callback) < 0 ) {
f5d33f52
JA
1562 err = AVERROR(EIO);
1563 goto fail;
1564 }
1565
1566 /* generate POST headers */
1567 snprintf(headers, sizeof(headers),
1568 "x-sessioncookie: %s\r\n"
1569 "Content-Type: application/x-rtsp-tunnelled\r\n"
1570 "Pragma: no-cache\r\n"
1571 "Cache-Control: no-cache\r\n"
1572 "Content-Length: 32767\r\n"
1573 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1574 sessioncookie);
196bf28c 1575 av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
6149485f 1576 av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
f5d33f52 1577
a8ead332
MS
1578 /* Initialize the authentication state for the POST session. The HTTP
1579 * protocol implementation doesn't properly handle multi-pass
1580 * authentication for POST requests, since it would require one of
1581 * the following:
1582 * - implementing Expect: 100-continue, which many HTTP servers
1583 * don't support anyway, even less the RTSP servers that do HTTP
1584 * tunneling
1585 * - sending the whole POST data until getting a 401 reply specifying
1586 * what authentication method to use, then resending all that data
1587 * - waiting for potential 401 replies directly after sending the
1588 * POST header (waiting for some unspecified time)
1589 * Therefore, we copy the full auth state, which works for both basic
1590 * and digest. (For digest, we would have to synchronize the nonce
1591 * count variable between the two sessions, if we'd do more requests
1592 * with the original session, though.)
1593 */
1594 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1595
9290f15d 1596 /* complete the connection */
ddffc2fd 1597 if (ffurl_connect(rt->rtsp_hd_out, NULL)) {
9290f15d
MS
1598 err = AVERROR(EIO);
1599 goto fail;
1600 }
f5d33f52 1601 } else {
48e77473 1602 /* open the tcp connection */
41874d0a 1603 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
6f1b7b39 1604 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
ddffc2fd 1605 &s->interrupt_callback, NULL) < 0) {
41874d0a
JA
1606 err = AVERROR(EIO);
1607 goto fail;
1608 }
00e4a1f4 1609 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1610 }
53620bba
RB
1611 rt->seq = 0;
1612
1869ea03 1613 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1614 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1615 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1616 NULL, 0, NI_NUMERICHOST);
1617 }
1618
c8965800
RB
1619 /* request options supported by the server; this also detects server
1620 * type */
1cf151e9 1621 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1622 cmd[0] = 0;
2e889ae4 1623 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1624 av_strlcat(cmd,
f75e3da5 1625 /*
1cf151e9
RB
1626 * The following entries are required for proper
1627 * streaming from a Realmedia server. They are
1628 * interdependent in some way although we currently
1629 * don't quite understand how. Values were copied
1630 * from mplayer SVN r23589.
f75e3da5
DB
1631 * ClientChallenge is a 16-byte ID in hex
1632 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1633 */
1634 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1635 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1636 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1637 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1638 sizeof(cmd));
b17d11c6 1639 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1640 if (reply->status_code != RTSP_STATUS_OK) {
1641 err = AVERROR_INVALIDDATA;
1642 goto fail;
1643 }
1644
1645 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1646 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1647 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1648 continue;
bb3244de 1649 } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
7a86bafa 1650 rt->server_type = RTSP_SERVER_WMS;
c8965800 1651 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1652 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1653 break;
1654 }
1655
44b70ce5 1656 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1657 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1658 else if (CONFIG_RTSP_MUXER)
c2688f3a 1659 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1660 if (err)
53620bba 1661 goto fail;
53620bba 1662
8a8754d8 1663 do {
c8965800
RB
1664 int lower_transport = ff_log2_tab[lower_transport_mask &
1665 ~(lower_transport_mask - 1)];
8a8754d8 1666
fef5649a 1667 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1668 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1669 real_challenge : NULL);
8a8754d8 1670 if (err < 0)
7e6ca34f 1671 goto fail;
90abbdba
RB
1672 lower_transport_mask &= ~(1 << lower_transport);
1673 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1674 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1675 goto fail;
1676 }
1677 } while (err);
53620bba 1678
2762a7a2
MS
1679 rt->lower_transport_mask = lower_transport_mask;
1680 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1681 rt->state = RTSP_STATE_IDLE;
c8965800 1682 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1683 return 0;
1684 fail:
3307e6ea 1685 ff_rtsp_close_streams(s);
b8c2c41d 1686 ff_rtsp_close_connections(s);
35cfd646 1687 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1688 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1689 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1690 reply->status_code,
1691 s->filename);
1692 goto redirect;
1693 }
57b5555c 1694 ff_network_close();
1617ad97
FB
1695 return err;
1696}
2e802e38 1697#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1698
44b70ce5 1699#if CONFIG_RTPDEC
0e59034e 1700static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1701 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1702{
1703 RTSPState *rt = s->priv_data;
1704 RTSPStream *rtsp_st;
a8475bbd
LB
1705 int n, i, ret, tcp_fd, timeout_cnt = 0;
1706 int max_p = 0;
1707 struct pollfd *p = rt->p;
e7993ece 1708 int *fds = NULL, fdsnum, fdsidx;
0e59034e 1709
c8965800 1710 for (;;) {
9957cdbf 1711 if (ff_check_interrupt(&s->interrupt_callback))
c76374c6 1712 return AVERROR_EXIT;
321259c1
MS
1713 if (wait_end && wait_end - av_gettime() < 0)
1714 return AVERROR(EAGAIN);
a8475bbd 1715 max_p = 0;
0e59034e 1716 if (rt->rtsp_hd) {
1869ea03 1717 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1718 p[max_p].fd = tcp_fd;
1719 p[max_p++].events = POLLIN;
0e59034e 1720 } else {
0e59034e
RB
1721 tcp_fd = -1;
1722 }
c8965800 1723 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1724 rtsp_st = rt->rtsp_streams[i];
1725 if (rtsp_st->rtp_handle) {
e7993ece
JO
1726 if (ret = ffurl_get_multi_file_handle(rtsp_st->rtp_handle,
1727 &fds, &fdsnum)) {
1728 av_log(s, AV_LOG_ERROR, "Unable to recover rtp ports\n");
1729 return ret;
1730 }
1731 if (fdsnum != 2) {
1732 av_log(s, AV_LOG_ERROR,
1733 "Number of fds %d not supported\n", fdsnum);
1734 return AVERROR_INVALIDDATA;
1735 }
1736 for (fdsidx = 0; fdsidx < fdsnum; fdsidx++) {
1737 p[max_p].fd = fds[fdsidx];
1738 p[max_p++].events = POLLIN;
1739 }
1740 av_free(fds);
0e59034e
RB
1741 }
1742 }
a8475bbd 1743 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1744 if (n > 0) {
a8475bbd 1745 int j = 1 - (tcp_fd == -1);
9cba6f5f 1746 timeout_cnt = 0;
c8965800 1747 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1748 rtsp_st = rt->rtsp_streams[i];
1749 if (rtsp_st->rtp_handle) {
a8475bbd 1750 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1751 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1752 if (ret > 0) {
1753 *prtsp_st = rtsp_st;
1754 return ret;
1755 }
1756 }
a8475bbd 1757 j+=2;
0e59034e
RB
1758 }
1759 }
5fe8021a 1760#if CONFIG_RTSP_DEMUXER
a8475bbd 1761 if (tcp_fd != -1 && p[0].revents & POLLIN) {
a8ad6ffa
JO
1762 if (rt->rtsp_flags & RTSP_FLAG_LISTEN) {
1763 if (rt->state == RTSP_STATE_STREAMING) {
1764 if (!ff_rtsp_parse_streaming_commands(s))
1765 return AVERROR_EOF;
1766 else
1767 av_log(s, AV_LOG_WARNING,
1768 "Unable to answer to TEARDOWN\n");
1769 } else
1770 return 0;
1771 } else {
1772 RTSPMessageHeader reply;
1773 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
1774 if (ret < 0)
1775 return ret;
1776 /* XXX: parse message */
1777 if (rt->state != RTSP_STATE_STREAMING)
1778 return 0;
1779 }
0e59034e 1780 }
5fe8021a 1781#endif
9cba6f5f 1782 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1783 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1784 } else if (n < 0 && errno != EINTR)
1785 return AVERROR(errno);
0e59034e
RB
1786 }
1787}
1788
e96406ed
MS
1789static int pick_stream(AVFormatContext *s, RTSPStream **rtsp_st,
1790 const uint8_t *buf, int len)
1791{
1792 RTSPState *rt = s->priv_data;
1793 int i;
1794 if (len < 0)
1795 return len;
1796 if (rt->nb_rtsp_streams == 1) {
1797 *rtsp_st = rt->rtsp_streams[0];
1798 return len;
1799 }
1800 if (len >= 8 && rt->transport == RTSP_TRANSPORT_RTP) {
1801 if (RTP_PT_IS_RTCP(rt->recvbuf[1])) {
1802 int no_ssrc = 0;
1803 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1804 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
1805 if (!rtpctx)
1806 continue;
1807 if (rtpctx->ssrc == AV_RB32(&buf[4])) {
1808 *rtsp_st = rt->rtsp_streams[i];
1809 return len;
1810 }
1811 if (!rtpctx->ssrc)
1812 no_ssrc = 1;
1813 }
1814 if (no_ssrc) {
1815 av_log(s, AV_LOG_WARNING,
1816 "Unable to pick stream for packet - SSRC not known for "
1817 "all streams\n");
1818 return AVERROR(EAGAIN);
1819 }
1820 } else {
1821 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1822 if ((buf[1] & 0x7f) == rt->rtsp_streams[i]->sdp_payload_type) {
1823 *rtsp_st = rt->rtsp_streams[i];
1824 return len;
1825 }
1826 }
1827 }
1828 }
1829 av_log(s, AV_LOG_WARNING, "Unable to pick stream for packet\n");
1830 return AVERROR(EAGAIN);
1831}
1832
0526c6f7 1833int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1834{
1835 RTSPState *rt = s->priv_data;
1836 int ret, len;
321259c1
MS
1837 RTSPStream *rtsp_st, *first_queue_st = NULL;
1838 int64_t wait_end = 0;
0e59034e 1839
b20359f5
JA
1840 if (rt->nb_byes == rt->nb_rtsp_streams)
1841 return AVERROR_EOF;
1842
0e59034e
RB
1843 /* get next frames from the same RTP packet */
1844 if (rt->cur_transport_priv) {
c8965800 1845 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1846 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1243c722 1847 } else if (rt->transport == RTSP_TRANSPORT_RTP) {
bfc6db44 1848 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1243c722
MS
1849 } else if (rt->ts && CONFIG_RTPDEC) {
1850 ret = ff_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf + rt->recvbuf_pos, rt->recvbuf_len - rt->recvbuf_pos);
1851 if (ret >= 0) {
1852 rt->recvbuf_pos += ret;
1853 ret = rt->recvbuf_pos < rt->recvbuf_len;
1854 }
2f41eaa9
MS
1855 } else
1856 ret = -1;
0e59034e
RB
1857 if (ret == 0) {
1858 rt->cur_transport_priv = NULL;
1859 return 0;
1860 } else if (ret == 1) {
1861 return 0;
c8965800 1862 } else
0e59034e 1863 rt->cur_transport_priv = NULL;
0e59034e
RB
1864 }
1865
8729698d 1866redo:
321259c1
MS
1867 if (rt->transport == RTSP_TRANSPORT_RTP) {
1868 int i;
1869 int64_t first_queue_time = 0;
1870 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1871 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1872 int64_t queue_time;
1873 if (!rtpctx)
1874 continue;
1875 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1876 if (queue_time && (queue_time - first_queue_time < 0 ||
1877 !first_queue_time)) {
1878 first_queue_time = queue_time;
1879 first_queue_st = rt->rtsp_streams[i];
1880 }
1881 }
8729698d 1882 if (first_queue_time) {
321259c1 1883 wait_end = first_queue_time + s->max_delay;
8729698d
MS
1884 } else {
1885 wait_end = 0;
1886 first_queue_st = NULL;
1887 }
321259c1
MS
1888 }
1889
0e59034e 1890 /* read next RTP packet */
96a7c975
MS
1891 if (!rt->recvbuf) {
1892 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1893 if (!rt->recvbuf)
1894 return AVERROR(ENOMEM);
1895 }
1896
0e59034e
RB
1897 switch(rt->lower_transport) {
1898 default:
5fe8021a 1899#if CONFIG_RTSP_DEMUXER
0e59034e 1900 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1901 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1902 break;
5fe8021a 1903#endif
0e59034e
RB
1904 case RTSP_LOWER_TRANSPORT_UDP:
1905 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1906 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1907 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
e96406ed
MS
1908 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, rtsp_st->rtp_handle, NULL, len);
1909 break;
1910 case RTSP_LOWER_TRANSPORT_CUSTOM:
f811cd2d
MS
1911 if (first_queue_st && rt->transport == RTSP_TRANSPORT_RTP &&
1912 wait_end && wait_end < av_gettime())
1913 len = AVERROR(EAGAIN);
1914 else
1915 len = ffio_read_partial(s->pb, rt->recvbuf, RECVBUF_SIZE);
e96406ed
MS
1916 len = pick_stream(s, &rtsp_st, rt->recvbuf, len);
1917 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1918 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, NULL, s->pb, len);
0e59034e
RB
1919 break;
1920 }
321259c1
MS
1921 if (len == AVERROR(EAGAIN) && first_queue_st &&
1922 rt->transport == RTSP_TRANSPORT_RTP) {
1923 rtsp_st = first_queue_st;
bfc6db44 1924 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
1925 goto end;
1926 }
0e59034e
RB
1927 if (len < 0)
1928 return len;
1929 if (len == 0)
1930 return AVERROR_EOF;
c8965800 1931 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1932 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
df8cf076 1933 } else if (rt->transport == RTSP_TRANSPORT_RTP) {
bfc6db44 1934 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
86d9181c
MS
1935 if (rtsp_st->feedback) {
1936 AVIOContext *pb = NULL;
1937 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_CUSTOM)
1938 pb = s->pb;
1939 ff_rtp_send_rtcp_feedback(rtsp_st->transport_priv, rtsp_st->rtp_handle, pb);
1940 }
2cab6b48
MS
1941 if (ret < 0) {
1942 /* Either bad packet, or a RTCP packet. Check if the
1943 * first_rtcp_ntp_time field was initialized. */
1944 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1945 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1946 /* first_rtcp_ntp_time has been initialized for this stream,
1947 * copy the same value to all other uninitialized streams,
1948 * in order to map their timestamp origin to the same ntp time
1949 * as this one. */
1950 int i;
3a1cdcc7
MS
1951 AVStream *st = NULL;
1952 if (rtsp_st->stream_index >= 0)
1953 st = s->streams[rtsp_st->stream_index];
2cab6b48 1954 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1955 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1956 AVStream *st2 = NULL;
1957 if (rt->rtsp_streams[i]->stream_index >= 0)
1958 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1959 if (rtpctx2 && st && st2 &&
1960 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1961 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1962 rtpctx2->rtcp_ts_offset = av_rescale_q(
1963 rtpctx->rtcp_ts_offset, st->time_base,
1964 st2->time_base);
1965 }
2cab6b48
MS
1966 }
1967 }
b20359f5
JA
1968 if (ret == -RTCP_BYE) {
1969 rt->nb_byes++;
1970
1971 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1972 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1973
1974 if (rt->nb_byes == rt->nb_rtsp_streams)
1975 return AVERROR_EOF;
1976 }
2cab6b48 1977 }
1243c722
MS
1978 } else if (rt->ts && CONFIG_RTPDEC) {
1979 ret = ff_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf, len);
1980 if (ret >= 0) {
1981 if (ret < len) {
1982 rt->recvbuf_len = len;
1983 rt->recvbuf_pos = ret;
1984 rt->cur_transport_priv = rt->ts;
1985 return 1;
1986 } else {
1987 ret = 0;
1988 }
1989 }
df8cf076
MS
1990 } else {
1991 return AVERROR_INVALIDDATA;
2cab6b48 1992 }
321259c1 1993end:
0e59034e
RB
1994 if (ret < 0)
1995 goto redo;
c8965800 1996 if (ret == 1)
0e59034e
RB
1997 /* more packets may follow, so we save the RTP context */
1998 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1999
2000 return ret;
2001}
44b70ce5 2002#endif /* CONFIG_RTPDEC */
0e59034e 2003
44b70ce5 2004#if CONFIG_SDP_DEMUXER
cb1fdc61 2005static int sdp_probe(AVProbeData *p1)
93ced3e8 2006{
0e1ceacd 2007 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 2008
3fbd12d1 2009 /* we look for a line beginning "c=IN IP" */
0e1ceacd 2010 while (p < p_end && *p != '\0') {
3fbd12d1
MS
2011 if (p + sizeof("c=IN IP") - 1 < p_end &&
2012 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 2013 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 2014
c8965800 2015 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 2016 if (++p >= p_end)
cb1fdc61 2017 break;
cb1fdc61
FB
2018 if (*p == '\r')
2019 p++;
2020 }
93ced3e8
FB
2021 return 0;
2022}
2023
6e9651d1 2024static int sdp_read_header(AVFormatContext *s)
93ced3e8 2025{
8b1ab7bf 2026 RTSPState *rt = s->priv_data;
93ced3e8
FB
2027 RTSPStream *rtsp_st;
2028 int size, i, err;
2029 char *content;
2030 char url[1024];
2031
57b5555c
MS
2032 if (!ff_network_init())
2033 return AVERROR(EIO);
2034
4fa57d52 2035 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 2036 s->max_delay = DEFAULT_REORDERING_DELAY;
e96406ed
MS
2037 if (rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)
2038 rt->lower_transport = RTSP_LOWER_TRANSPORT_CUSTOM;
4fa57d52 2039
93ced3e8
FB
2040 /* read the whole sdp file */
2041 /* XXX: better loading */
2042 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 2043 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
2044 if (size <= 0) {
2045 av_free(content);
2046 return AVERROR_INVALIDDATA;
2047 }
2048 content[size] ='\0';
2049
f81c7ac7 2050 err = ff_sdp_parse(s, content);
93ced3e8 2051 av_free(content);
f81c7ac7 2052 if (err) goto fail;
93ced3e8
FB
2053
2054 /* open each RTP stream */
c8965800 2055 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 2056 char namebuf[50];
8b1ab7bf 2057 rtsp_st = rt->rtsp_streams[i];
115329f1 2058
e96406ed
MS
2059 if (!(rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)) {
2060 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
2061 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
2062 ff_url_join(url, sizeof(url), "rtp", NULL,
2063 namebuf, rtsp_st->sdp_port,
2064 "?localport=%d&ttl=%d&connect=%d", rtsp_st->sdp_port,
2065 rtsp_st->sdp_ttl,
2066 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0);
2067 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
2068 &s->interrupt_callback, NULL) < 0) {
2069 err = AVERROR_INVALIDDATA;
2070 goto fail;
2071 }
93ced3e8 2072 }
6e71c120 2073 if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 2074 goto fail;
93ced3e8
FB
2075 }
2076 return 0;
c8965800 2077fail:
3307e6ea 2078 ff_rtsp_close_streams(s);
57b5555c 2079 ff_network_close();
93ced3e8
FB
2080 return err;
2081}
2082
93ced3e8
FB
2083static int sdp_read_close(AVFormatContext *s)
2084{
3307e6ea 2085 ff_rtsp_close_streams(s);
57b5555c 2086 ff_network_close();
93ced3e8
FB
2087 return 0;
2088}
2089
51369f28
MS
2090static const AVClass sdp_demuxer_class = {
2091 .class_name = "SDP demuxer",
2092 .item_name = av_default_item_name,
2093 .option = sdp_options,
2094 .version = LIBAVUTIL_VERSION_INT,
2095};
2096
c6610a21 2097AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
2098 .name = "sdp",
2099 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
2100 .priv_data_size = sizeof(RTSPState),
2101 .read_probe = sdp_probe,
2102 .read_header = sdp_read_header,
2103 .read_packet = ff_rtsp_fetch_packet,
2104 .read_close = sdp_read_close,
17934c18 2105 .priv_class = &sdp_demuxer_class,
93ced3e8 2106};
44b70ce5 2107#endif /* CONFIG_SDP_DEMUXER */
44594cc7 2108
44b70ce5 2109#if CONFIG_RTP_DEMUXER
44594cc7
MS
2110static int rtp_probe(AVProbeData *p)
2111{
2112 if (av_strstart(p->filename, "rtp:", NULL))
2113 return AVPROBE_SCORE_MAX;
2114 return 0;
2115}
2116
6e9651d1 2117static int rtp_read_header(AVFormatContext *s)
44594cc7
MS
2118{
2119 uint8_t recvbuf[1500];
2120 char host[500], sdp[500];
2121 int ret, port;
2122 URLContext* in = NULL;
2123 int payload_type;
a92be9b8 2124 AVCodecContext codec = { 0 };
44594cc7 2125 struct sockaddr_storage addr;
ae628ec1 2126 AVIOContext pb;
44594cc7 2127 socklen_t addrlen = sizeof(addr);
30266038 2128 RTSPState *rt = s->priv_data;
44594cc7
MS
2129
2130 if (!ff_network_init())
2131 return AVERROR(EIO);
2132
6f1b7b39 2133 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ,
ddffc2fd 2134 &s->interrupt_callback, NULL);
44594cc7
MS
2135 if (ret)
2136 goto fail;
2137
2138 while (1) {
bc371aca 2139 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
44594cc7
MS
2140 if (ret == AVERROR(EAGAIN))
2141 continue;
2142 if (ret < 0)
2143 goto fail;
2144 if (ret < 12) {
2145 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
2146 continue;
2147 }
2148
2149 if ((recvbuf[0] & 0xc0) != 0x80) {
2150 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
2151 "received\n");
2152 continue;
2153 }
2154
298a587f 2155 if (RTP_PT_IS_RTCP(recvbuf[1]))
f3a094f2
MS
2156 continue;
2157
44594cc7
MS
2158 payload_type = recvbuf[1] & 0x7f;
2159 break;
2160 }
1869ea03 2161 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 2162 ffurl_close(in);
44594cc7
MS
2163 in = NULL;
2164
44594cc7
MS
2165 if (ff_rtp_get_codec_info(&codec, payload_type)) {
2166 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
2167 "without an SDP file describing it\n",
2168 payload_type);
2169 goto fail;
2170 }
2171 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
2172 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
2173 "properly you need an SDP file "
2174 "describing it\n");
2175 }
2176
2177 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
2178 NULL, 0, s->filename);
2179
2180 snprintf(sdp, sizeof(sdp),
2181 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
2182 addr.ss_family == AF_INET ? 4 : 6, host,
2183 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
2184 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
2185 port, payload_type);
2186 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
2187
e731b8d8 2188 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
44594cc7
MS
2189 s->pb = &pb;
2190
2191 /* sdp_read_header initializes this again */
2192 ff_network_close();
2193
30266038
MS
2194 rt->media_type_mask = (1 << (AVMEDIA_TYPE_DATA+1)) - 1;
2195
6e9651d1 2196 ret = sdp_read_header(s);
44594cc7
MS
2197 s->pb = NULL;
2198 return ret;
2199
2200fail:
2201 if (in)
e52a9145 2202 ffurl_close(in);
44594cc7
MS
2203 ff_network_close();
2204 return ret;
2205}
2206
51369f28
MS
2207static const AVClass rtp_demuxer_class = {
2208 .class_name = "RTP demuxer",
2209 .item_name = av_default_item_name,
2210 .option = rtp_options,
2211 .version = LIBAVUTIL_VERSION_INT,
2212};
2213
c6610a21 2214AVInputFormat ff_rtp_demuxer = {
dfc2c4d9 2215 .name = "rtp",
6774247a 2216 .long_name = NULL_IF_CONFIG_SMALL("RTP input"),
dfc2c4d9
AK
2217 .priv_data_size = sizeof(RTSPState),
2218 .read_probe = rtp_probe,
2219 .read_header = rtp_read_header,
2220 .read_packet = ff_rtsp_fetch_packet,
2221 .read_close = sdp_read_close,
17934c18
MS
2222 .flags = AVFMT_NOFILE,
2223 .priv_class = &rtp_demuxer_class,
44594cc7 2224};
44b70ce5 2225#endif /* CONFIG_RTP_DEMUXER */