rtsp: Parse SSRC attributes in the SDP
[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"
b7e6da98 44#include "rtpproto.h"
e9dea59f 45#include "rdt.h"
965a3ddb 46#include "rtpdec_formats.h"
a493f80a 47#include "rtpenc_chain.h"
5652bb94 48#include "url.h"
17fff881 49#include "rtpenc.h"
1243c722 50#include "mpegts.h"
4934884a 51
a8475bbd 52/* Timeout values for socket poll, in ms,
9cba6f5f 53 * and read_packet(), in seconds */
a8475bbd 54#define POLL_TIMEOUT_MS 100
9cba6f5f 55#define READ_PACKET_TIMEOUT_S 10
a8475bbd 56#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS
91af5601 57#define SDP_MAX_SIZE 16384
96a7c975 58#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
ccfa8aa2 59#define DEFAULT_REORDERING_DELAY 100000
9cba6f5f 60
2c9aa024
MS
61#define OFFSET(x) offsetof(RTSPState, x)
62#define DEC AV_OPT_FLAG_DECODING_PARAM
eca4850c 63#define ENC AV_OPT_FLAG_ENCODING_PARAM
3a6765fb
MS
64
65#define RTSP_FLAG_OPTS(name, longname) \
d58dd4b5 66 { name, longname, OFFSET(rtsp_flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, DEC, "rtsp_flags" }, \
f4d371b9 67 { "filter_src", "Only receive packets from the negotiated peer IP", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_FILTER_SRC}, 0, 0, DEC, "rtsp_flags" }
3a6765fb 68
f011fcd6 69#define RTSP_MEDIATYPE_OPTS(name, longname) \
d58dd4b5 70 { name, longname, OFFSET(media_type_mask), AV_OPT_TYPE_FLAGS, { .i64 = (1 << (AVMEDIA_TYPE_DATA+1)) - 1 }, INT_MIN, INT_MAX, DEC, "allowed_media_types" }, \
124134e4
MS
71 { "video", "Video", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_VIDEO}, 0, 0, DEC, "allowed_media_types" }, \
72 { "audio", "Audio", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_AUDIO}, 0, 0, DEC, "allowed_media_types" }, \
73 { "data", "Data", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_DATA}, 0, 0, DEC, "allowed_media_types" }
f011fcd6 74
e3ec6fe7
LB
75#define COMMON_OPTS() \
76 { "reorder_queue_size", "Number of packets to buffer for handling of reordered packets", OFFSET(reordering_queue_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, DEC }, \
77 { "buffer_size", "Underlying protocol send/receive buffer size", OFFSET(buffer_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, DEC|ENC } \
78
3f055f8f 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"),
f4d371b9 89 { "listen", "Wait for incoming connections", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_LISTEN}, 0, 0, DEC, "rtsp_flags" },
f011fcd6 90 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
e6153f17
MS
91 { "min_port", "Minimum local UDP port", OFFSET(rtp_port_min), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MIN}, 0, 65535, DEC|ENC },
92 { "max_port", "Maximum local UDP port", OFFSET(rtp_port_max), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MAX}, 0, 65535, DEC|ENC },
93 { "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 },
e3ec6fe7 94 COMMON_OPTS(),
17fff881
MS
95 { NULL },
96};
97
51369f28
MS
98static const AVOption sdp_options[] = {
99 RTSP_FLAG_OPTS("sdp_flags", "SDP flags"),
e96406ed 100 { "custom_io", "Use custom IO", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_CUSTOM_IO}, 0, 0, DEC, "rtsp_flags" },
b56fc18b 101 { "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" },
f011fcd6 102 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
e3ec6fe7 103 COMMON_OPTS(),
51369f28
MS
104 { NULL },
105};
106
107static const AVOption rtp_options[] = {
108 RTSP_FLAG_OPTS("rtp_flags", "RTP flags"),
e3ec6fe7 109 COMMON_OPTS(),
51369f28
MS
110 { NULL },
111};
112
e3ec6fe7
LB
113
114static AVDictionary *map_to_opts(RTSPState *rt)
115{
116 AVDictionary *opts = NULL;
117 char buf[256];
118
119 snprintf(buf, sizeof(buf), "%d", rt->buffer_size);
120 av_dict_set(&opts, "buffer_size", buf, 0);
121
122 return opts;
123}
124
1ef36a70
RB
125static void get_word_until_chars(char *buf, int buf_size,
126 const char *sep, const char **pp)
1617ad97
FB
127{
128 const char *p;
129 char *q;
130
131 p = *pp;
30619e6e 132 p += strspn(p, SPACE_CHARS);
1617ad97
FB
133 q = buf;
134 while (!strchr(sep, *p) && *p != '\0') {
135 if ((q - buf) < buf_size - 1)
136 *q++ = *p;
137 p++;
138 }
139 if (buf_size > 0)
140 *q = '\0';
141 *pp = p;
142}
143
1ef36a70
RB
144static void get_word_sep(char *buf, int buf_size, const char *sep,
145 const char **pp)
1617ad97 146{
1ef36a70
RB
147 if (**pp == '/') (*pp)++;
148 get_word_until_chars(buf, buf_size, sep, pp);
149}
1617ad97 150
1ef36a70
RB
151static void get_word(char *buf, int buf_size, const char **pp)
152{
153 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
154}
155
8bf0f969
MS
156/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
157 * and end time.
158 * Used for seeking in the rtp stream.
159 */
160static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
161{
162 char buf[256];
163
164 p += strspn(p, SPACE_CHARS);
165 if (!av_stristart(p, "npt=", &p))
166 return;
167
168 *start = AV_NOPTS_VALUE;
169 *end = AV_NOPTS_VALUE;
170
171 get_word_sep(buf, sizeof(buf), "-", &p);
eb7ddb50 172 if (av_parse_time(start, buf, 1) < 0)
4e544321 173 return;
8bf0f969
MS
174 if (*p == '-') {
175 p++;
176 get_word_sep(buf, sizeof(buf), "-", &p);
eb7ddb50 177 av_parse_time(end, buf, 1);
8bf0f969 178 }
8bf0f969
MS
179}
180
2c17fb61
LB
181static int get_sockaddr(AVFormatContext *s,
182 const char *buf, struct sockaddr_storage *sock)
8bf0f969 183{
a92be9b8 184 struct addrinfo hints = { 0 }, *ai = NULL;
2c17fb61
LB
185 int ret;
186
8bf0f969 187 hints.ai_flags = AI_NUMERICHOST;
2c17fb61
LB
188 if ((ret = getaddrinfo(buf, NULL, &hints, &ai))) {
189 av_log(s, AV_LOG_ERROR, "getaddrinfo(%s): %s\n",
190 buf,
191 gai_strerror(ret));
8bf0f969 192 return -1;
2c17fb61 193 }
8bf0f969
MS
194 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
195 freeaddrinfo(ai);
196 return 0;
197}
198
44b70ce5 199#if CONFIG_RTPDEC
003eb642 200static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
b7a4c319 201 RTSPStream *rtsp_st, AVStream *st)
003eb642 202{
9200514a 203 AVCodecParameters *par = st ? st->codecpar : NULL;
003eb642
MS
204 if (!handler)
205 return;
9200514a
AK
206 if (par)
207 par->codec_id = handler->codec_id;
003eb642 208 rtsp_st->dynamic_handler = handler;
b7a4c319
MS
209 if (st)
210 st->need_parsing = handler->need_parsing;
f4b59334 211 if (handler->priv_data_size) {
e72605f8
MS
212 rtsp_st->dynamic_protocol_context = av_mallocz(handler->priv_data_size);
213 if (!rtsp_st->dynamic_protocol_context)
214 rtsp_st->dynamic_handler = NULL;
4b3dc857 215 }
003eb642
MS
216}
217
078d43e2
MS
218static void finalize_rtp_handler_init(AVFormatContext *s, RTSPStream *rtsp_st,
219 AVStream *st)
220{
221 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->init) {
222 int ret = rtsp_st->dynamic_handler->init(s, st ? st->index : -1,
223 rtsp_st->dynamic_protocol_context);
224 if (ret < 0) {
225 if (rtsp_st->dynamic_protocol_context) {
d594dbec
MS
226 if (rtsp_st->dynamic_handler->close)
227 rtsp_st->dynamic_handler->close(
078d43e2
MS
228 rtsp_st->dynamic_protocol_context);
229 av_free(rtsp_st->dynamic_protocol_context);
230 }
231 rtsp_st->dynamic_protocol_context = NULL;
232 rtsp_st->dynamic_handler = NULL;
233 }
234 }
235}
236
c8965800 237/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 238static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 239 AVStream *st, RTSPStream *rtsp_st,
c8965800 240 int payload_type, const char *p)
93ced3e8 241{
9200514a 242 AVCodecParameters *par = st->codecpar;
93ced3e8 243 char buf[256];
d1ccf0e0
RD
244 int i;
245 AVCodec *c;
7b49ce2e 246 const char *c_name;
93ced3e8 247
3900d53f 248 /* See if we can handle this kind of payload.
9d50d396
RB
249 * The space should normally not be there but some Real streams or
250 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
251 * have a trailing space. */
252 get_word_sep(buf, sizeof(buf), "/ ", &p);
6099543a
MS
253 if (payload_type < RTP_PT_PRIVATE) {
254 /* We are in a standard case
255 * (from http://www.iana.org/assignments/rtp-parameters). */
9200514a 256 par->codec_id = ff_rtp_codec_id(buf, par->codec_type);
6099543a
MS
257 }
258
9200514a 259 if (par->codec_id == AV_CODEC_ID_NONE) {
003eb642 260 RTPDynamicProtocolHandler *handler =
9200514a 261 ff_rtp_handler_find_by_name(buf, par->codec_type);
b7a4c319 262 init_rtp_handler(handler, rtsp_st, st);
160918d5
MS
263 /* If no dynamic handler was found, check with the list of standard
264 * allocated types, if such a stream for some reason happens to
265 * use a private payload type. This isn't handled in rtpdec.c, since
266 * the format name from the rtpmap line never is passed into rtpdec. */
267 if (!rtsp_st->dynamic_handler)
9200514a 268 par->codec_id = ff_rtp_codec_id(buf, par->codec_type);
d1ccf0e0
RD
269 }
270
9200514a 271 c = avcodec_find_decoder(par->codec_id);
d1ccf0e0 272 if (c && c->name)
7b49ce2e 273 c_name = c->name;
d1ccf0e0 274 else
170870b7 275 c_name = "(null)";
d1ccf0e0 276
7515ed0c
RB
277 get_word_sep(buf, sizeof(buf), "/", &p);
278 i = atoi(buf);
9200514a 279 switch (par->codec_type) {
72415b2a 280 case AVMEDIA_TYPE_AUDIO:
7515ed0c 281 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
9200514a
AK
282 par->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
283 par->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
7515ed0c 284 if (i > 0) {
9200514a
AK
285 par->sample_rate = i;
286 avpriv_set_pts_info(st, 32, 1, par->sample_rate);
7515ed0c
RB
287 get_word_sep(buf, sizeof(buf), "/", &p);
288 i = atoi(buf);
289 if (i > 0)
9200514a 290 par->channels = i;
d1ccf0e0 291 }
7515ed0c 292 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
9200514a 293 par->sample_rate);
7515ed0c 294 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
9200514a 295 par->channels);
7515ed0c 296 break;
72415b2a 297 case AVMEDIA_TYPE_VIDEO:
7515ed0c 298 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387 299 if (i > 0)
c3f9ebf7 300 avpriv_set_pts_info(st, 32, 1, i);
7515ed0c
RB
301 break;
302 default:
303 break;
304 }
078d43e2 305 finalize_rtp_handler_init(s, rtsp_st, st);
7515ed0c 306 return 0;
93ced3e8
FB
307}
308
c2bfd816 309/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
310 * is broken out as a function because it is used in rtp_h264.c, which is
311 * forthcoming. */
3307e6ea 312int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 313 char *value, int value_size)
d0deedcb 314{
30619e6e 315 *p += strspn(*p, SPACE_CHARS);
c8965800 316 if (**p) {
d0deedcb
RM
317 get_word_sep(attr, attr_size, "=", p);
318 if (**p == '=')
319 (*p)++;
320 get_word_sep(value, value_size, ";", p);
321 if (**p == ';')
322 (*p)++;
323 return 1;
324 }
325 return 0;
326}
327
93ced3e8
FB
328typedef struct SDPParseState {
329 /* SDP only */
3fbd12d1 330 struct sockaddr_storage default_ip;
c8965800
RB
331 int default_ttl;
332 int skip_media; ///< set if an unknown m= line occurs
1f57d601
ET
333 int nb_default_include_source_addrs; /**< Number of source-specific multicast include source IP address (from SDP content) */
334 struct RTSPSource **default_include_source_addrs; /**< Source-specific multicast include source IP address (from SDP content) */
335 int nb_default_exclude_source_addrs; /**< Number of source-specific multicast exclude source IP address (from SDP content) */
336 struct RTSPSource **default_exclude_source_addrs; /**< Source-specific multicast exclude source IP address (from SDP content) */
c385313d
JK
337 int seen_rtpmap;
338 int seen_fmtp;
339 char delayed_fmtp[2048];
93ced3e8
FB
340} SDPParseState;
341
1f57d601
ET
342static void copy_default_source_addrs(struct RTSPSource **addrs, int count,
343 struct RTSPSource ***dest, int *dest_count)
344{
345 RTSPSource *rtsp_src, *rtsp_src2;
346 int i;
347 for (i = 0; i < count; i++) {
348 rtsp_src = addrs[i];
349 rtsp_src2 = av_malloc(sizeof(*rtsp_src2));
350 if (!rtsp_src2)
351 continue;
352 memcpy(rtsp_src2, rtsp_src, sizeof(*rtsp_src));
353 dynarray_add(dest, dest_count, rtsp_src2);
354 }
355}
356
c9c1e00f
LB
357static void parse_fmtp(AVFormatContext *s, RTSPState *rt,
358 int payload_type, const char *line)
359{
360 int i;
361
362 for (i = 0; i < rt->nb_rtsp_streams; i++) {
363 RTSPStream *rtsp_st = rt->rtsp_streams[i];
364 if (rtsp_st->sdp_payload_type == payload_type &&
365 rtsp_st->dynamic_handler &&
366 rtsp_st->dynamic_handler->parse_sdp_a_line) {
367 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
74d318f1 368 rtsp_st->dynamic_protocol_context, line);
c9c1e00f
LB
369 }
370 }
371}
372
93ced3e8 373static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
374 int letter, const char *buf)
375{
8b1ab7bf 376 RTSPState *rt = s->priv_data;
1617ad97
FB
377 char buf1[64], st_type[64];
378 const char *p;
72415b2a 379 enum AVMediaType codec_type;
c9c1e00f 380 int payload_type;
1617ad97
FB
381 AVStream *st;
382 RTSPStream *rtsp_st;
1f57d601 383 RTSPSource *rtsp_src;
3fbd12d1 384 struct sockaddr_storage sdp_ip;
93ced3e8
FB
385 int ttl;
386
1a3eb042 387 av_log(s, AV_LOG_TRACE, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
388
389 p = buf;
cb760a47
RB
390 if (s1->skip_media && letter != 'm')
391 return;
c8965800 392 switch (letter) {
93ced3e8
FB
393 case 'c':
394 get_word(buf1, sizeof(buf1), &p);
395 if (strcmp(buf1, "IN") != 0)
396 return;
397 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 398 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
399 return;
400 get_word_sep(buf1, sizeof(buf1), "/", &p);
2c17fb61 401 if (get_sockaddr(s, buf1, &sdp_ip))
93ced3e8
FB
402 return;
403 ttl = 16;
404 if (*p == '/') {
405 p++;
406 get_word_sep(buf1, sizeof(buf1), "/", &p);
407 ttl = atoi(buf1);
408 }
409 if (s->nb_streams == 0) {
410 s1->default_ip = sdp_ip;
411 s1->default_ttl = ttl;
412 } else {
d9c0510e 413 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
414 rtsp_st->sdp_ip = sdp_ip;
415 rtsp_st->sdp_ttl = ttl;
416 }
417 break;
1617ad97 418 case 's':
d2d67e42 419 av_dict_set(&s->metadata, "title", p, 0);
1617ad97
FB
420 break;
421 case 'i':
422 if (s->nb_streams == 0) {
d2d67e42 423 av_dict_set(&s->metadata, "comment", p, 0);
1617ad97
FB
424 break;
425 }
426 break;
427 case 'm':
428 /* new stream */
c385313d
JK
429 s1->skip_media = 0;
430 s1->seen_fmtp = 0;
431 s1->seen_rtpmap = 0;
f011fcd6 432 codec_type = AVMEDIA_TYPE_UNKNOWN;
1617ad97
FB
433 get_word(st_type, sizeof(st_type), &p);
434 if (!strcmp(st_type, "audio")) {
72415b2a 435 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 436 } else if (!strcmp(st_type, "video")) {
72415b2a 437 codec_type = AVMEDIA_TYPE_VIDEO;
26524e35 438 } else if (!strcmp(st_type, "application") || !strcmp(st_type, "text")) {
72415b2a 439 codec_type = AVMEDIA_TYPE_DATA;
f011fcd6
JB
440 }
441 if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) {
cb760a47 442 s1->skip_media = 1;
1617ad97
FB
443 return;
444 }
1617ad97
FB
445 rtsp_st = av_mallocz(sizeof(RTSPStream));
446 if (!rtsp_st)
447 return;
8b1ab7bf
FB
448 rtsp_st->stream_index = -1;
449 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
450
451 rtsp_st->sdp_ip = s1->default_ip;
452 rtsp_st->sdp_ttl = s1->default_ttl;
453
1f57d601
ET
454 copy_default_source_addrs(s1->default_include_source_addrs,
455 s1->nb_default_include_source_addrs,
456 &rtsp_st->include_source_addrs,
457 &rtsp_st->nb_include_source_addrs);
458 copy_default_source_addrs(s1->default_exclude_source_addrs,
459 s1->nb_default_exclude_source_addrs,
460 &rtsp_st->exclude_source_addrs,
461 &rtsp_st->nb_exclude_source_addrs);
462
93ced3e8
FB
463 get_word(buf1, sizeof(buf1), &p); /* port */
464 rtsp_st->sdp_port = atoi(buf1);
465
df8cf076
MS
466 get_word(buf1, sizeof(buf1), &p); /* protocol */
467 if (!strcmp(buf1, "udp"))
468 rt->transport = RTSP_TRANSPORT_RAW;
86d9181c
MS
469 else if (strstr(buf1, "/AVPF") || strstr(buf1, "/SAVPF"))
470 rtsp_st->feedback = 1;
115329f1 471
93ced3e8
FB
472 /* XXX: handle list of formats */
473 get_word(buf1, sizeof(buf1), &p); /* format list */
474 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 475
7ed19d7f 476 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf 477 /* no corresponding stream */
2326558d 478 if (rt->transport == RTSP_TRANSPORT_RAW) {
604c9b11 479 if (CONFIG_RTPDEC && !rt->ts)
2326558d
MS
480 rt->ts = ff_mpegts_parse_open(s);
481 } else {
482 RTPDynamicProtocolHandler *handler;
483 handler = ff_rtp_handler_find_by_id(
484 rtsp_st->sdp_payload_type, AVMEDIA_TYPE_DATA);
485 init_rtp_handler(handler, rtsp_st, NULL);
078d43e2 486 finalize_rtp_handler_init(s, rtsp_st, NULL);
2326558d 487 }
45600148
MS
488 } else if (rt->server_type == RTSP_SERVER_WMS &&
489 codec_type == AVMEDIA_TYPE_DATA) {
490 /* RTX stream, a stream that carries all the other actual
491 * audio/video streams. Don't expose this to the callers. */
8b1ab7bf 492 } else {
84ad31ff 493 st = avformat_new_stream(s, NULL);
8b1ab7bf
FB
494 if (!st)
495 return;
84ad31ff 496 st->id = rt->nb_rtsp_streams - 1;
8b1ab7bf 497 rtsp_st->stream_index = st->index;
9200514a 498 st->codecpar->codec_type = codec_type;
d1ccf0e0 499 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 500 RTPDynamicProtocolHandler *handler;
8b1ab7bf 501 /* if standard payload type, we can find the codec right now */
9200514a
AK
502 ff_rtp_get_codec_info(st->codecpar, rtsp_st->sdp_payload_type);
503 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
504 st->codecpar->sample_rate > 0)
505 avpriv_set_pts_info(st, 32, 1, st->codecpar->sample_rate);
6a7e31a9
MS
506 /* Even static payload types may need a custom depacketizer */
507 handler = ff_rtp_handler_find_by_id(
9200514a 508 rtsp_st->sdp_payload_type, st->codecpar->codec_type);
b7a4c319 509 init_rtp_handler(handler, rtsp_st, st);
078d43e2 510 finalize_rtp_handler_init(s, rtsp_st, st);
8b1ab7bf 511 }
4438d1c6
GC
512 if (rt->default_lang[0])
513 av_dict_set(&st->metadata, "language", rt->default_lang, 0);
8b1ab7bf 514 }
1617ad97 515 /* put a default control url */
00eb13e0 516 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 517 sizeof(rtsp_st->control_url));
1617ad97
FB
518 break;
519 case 'a':
00eb13e0
AS
520 if (av_strstart(p, "control:", &p)) {
521 if (s->nb_streams == 0) {
522 if (!strncmp(p, "rtsp://", 7))
523 av_strlcpy(rt->control_uri, p,
524 sizeof(rt->control_uri));
525 } else {
0b6a7ff4
MS
526 char proto[32];
527 /* get the control url */
d9c0510e 528 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 529
0b6a7ff4
MS
530 /* XXX: may need to add full url resolution */
531 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
532 NULL, NULL, 0, p);
533 if (proto[0] == '\0') {
534 /* relative control URL */
535 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
536 av_strlcat(rtsp_st->control_url, "/",
537 sizeof(rtsp_st->control_url));
538 av_strlcat(rtsp_st->control_url, p,
539 sizeof(rtsp_st->control_url));
540 } else
541 av_strlcpy(rtsp_st->control_url, p,
542 sizeof(rtsp_st->control_url));
00eb13e0 543 }
83d14c85 544 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 545 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 546 get_word(buf1, sizeof(buf1), &p);
93ced3e8 547 payload_type = atoi(buf1);
d9c0510e 548 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
45600148
MS
549 if (rtsp_st->stream_index >= 0) {
550 st = s->streams[rtsp_st->stream_index];
551 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
552 }
c385313d
JK
553 s1->seen_rtpmap = 1;
554 if (s1->seen_fmtp) {
555 parse_fmtp(s, rt, payload_type, s1->delayed_fmtp);
556 }
7fc8ac7f
JA
557 } else if (av_strstart(p, "fmtp:", &p) ||
558 av_strstart(p, "framesize:", &p)) {
d0deedcb
RM
559 // let dynamic protocol handlers have a stab at the line.
560 get_word(buf1, sizeof(buf1), &p);
561 payload_type = atoi(buf1);
c385313d
JK
562 if (s1->seen_rtpmap) {
563 parse_fmtp(s, rt, payload_type, buf);
564 } else {
565 s1->seen_fmtp = 1;
566 av_strlcpy(s1->delayed_fmtp, buf, sizeof(s1->delayed_fmtp));
567 }
bc2a3296
MS
568 } else if (av_strstart(p, "ssrc:", &p) && s->nb_streams > 0) {
569 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
570 get_word(buf1, sizeof(buf1), &p);
571 rtsp_st->ssrc = strtoll(buf1, NULL, 10);
c8965800 572 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
573 int64_t start, end;
574
575 // this is so that seeking on a streamed file can work.
576 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
577 s->start_time = start;
578 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
579 s->duration = (end == AV_NOPTS_VALUE) ?
580 AV_NOPTS_VALUE : end - start;
4438d1c6
GC
581 } else if (av_strstart(p, "lang:", &p)) {
582 if (s->nb_streams > 0) {
583 get_word(buf1, sizeof(buf1), &p);
584 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
585 if (rtsp_st->stream_index >= 0) {
586 st = s->streams[rtsp_st->stream_index];
587 av_dict_set(&st->metadata, "language", buf1, 0);
588 }
589 } else
590 get_word(rt->default_lang, sizeof(rt->default_lang), &p);
119b4668
RB
591 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
592 if (atoi(p) == 1)
593 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
594 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
595 s->nb_streams > 0) {
596 st = s->streams[s->nb_streams - 1];
9200514a 597 st->codecpar->sample_rate = atoi(p);
424da308
MS
598 } else if (av_strstart(p, "crypto:", &p) && s->nb_streams > 0) {
599 // RFC 4568
600 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
601 get_word(buf1, sizeof(buf1), &p); // ignore tag
602 get_word(rtsp_st->crypto_suite, sizeof(rtsp_st->crypto_suite), &p);
603 p += strspn(p, SPACE_CHARS);
604 if (av_strstart(p, "inline:", &p))
605 get_word(rtsp_st->crypto_params, sizeof(rtsp_st->crypto_params), &p);
1f57d601
ET
606 } else if (av_strstart(p, "source-filter:", &p)) {
607 int exclude = 0;
36fb0d02 608 get_word(buf1, sizeof(buf1), &p);
1f57d601 609 if (strcmp(buf1, "incl") && strcmp(buf1, "excl"))
36fb0d02 610 return;
1f57d601 611 exclude = !strcmp(buf1, "excl");
36fb0d02
ET
612
613 get_word(buf1, sizeof(buf1), &p);
614 if (strcmp(buf1, "IN") != 0)
615 return;
616 get_word(buf1, sizeof(buf1), &p);
1f57d601 617 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6") && strcmp(buf1, "*"))
36fb0d02 618 return;
1f57d601 619 // not checking that the destination address actually matches or is wildcard
36fb0d02
ET
620 get_word(buf1, sizeof(buf1), &p);
621
1f57d601
ET
622 while (*p != '\0') {
623 rtsp_src = av_mallocz(sizeof(*rtsp_src));
624 if (!rtsp_src)
625 return;
626 get_word(rtsp_src->addr, sizeof(rtsp_src->addr), &p);
627 if (exclude) {
628 if (s->nb_streams == 0) {
629 dynarray_add(&s1->default_exclude_source_addrs, &s1->nb_default_exclude_source_addrs, rtsp_src);
630 } else {
631 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
632 dynarray_add(&rtsp_st->exclude_source_addrs, &rtsp_st->nb_exclude_source_addrs, rtsp_src);
633 }
634 } else {
635 if (s->nb_streams == 0) {
636 dynarray_add(&s1->default_include_source_addrs, &s1->nb_default_include_source_addrs, rtsp_src);
637 } else {
638 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
639 dynarray_add(&rtsp_st->include_source_addrs, &rtsp_st->nb_include_source_addrs, rtsp_src);
640 }
641 }
642 }
1a30d541
RB
643 } else {
644 if (rt->server_type == RTSP_SERVER_WMS)
645 ff_wms_parse_sdp_a_line(s, p);
646 if (s->nb_streams > 0) {
45600148
MS
647 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
648
c4a3d032 649 if (rt->server_type == RTSP_SERVER_REAL)
45600148 650 ff_real_parse_sdp_a_line(s, rtsp_st->stream_index, p);
c4a3d032 651
c4a3d032
RB
652 if (rtsp_st->dynamic_handler &&
653 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800 654 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
45600148 655 rtsp_st->stream_index,
c4a3d032 656 rtsp_st->dynamic_protocol_context, buf);
1a30d541 657 }
1617ad97
FB
658 }
659 break;
660 }
661}
662
0526c6f7 663int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 664{
a8475bbd 665 RTSPState *rt = s->priv_data;
1617ad97 666 const char *p;
1f57d601 667 int letter, i;
9211bcdd
RB
668 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
669 * contain long SDP lines containing complete ASF Headers (several
670 * kB) or arrays of MDPR (RM stream descriptor) headers plus
671 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
672 * buffer is large.
673 *
afcea58c
JA
674 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
675 * in rtpdec_xiph.c. */
373afbaf 676 char buf[16384], *q;
a92be9b8 677 SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state;
115329f1 678
1617ad97 679 p = content;
c8965800 680 for (;;) {
30619e6e 681 p += strspn(p, SPACE_CHARS);
1617ad97
FB
682 letter = *p;
683 if (letter == '\0')
684 break;
685 p++;
686 if (*p != '=')
687 goto next_line;
688 p++;
689 /* get the content */
690 q = buf;
b6892136 691 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
692 if ((q - buf) < sizeof(buf) - 1)
693 *q++ = *p;
694 p++;
695 }
696 *q = '\0';
93ced3e8 697 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
698 next_line:
699 while (*p != '\n' && *p != '\0')
700 p++;
701 if (*p == '\n')
702 p++;
703 }
1f57d601
ET
704
705 for (i = 0; i < s1->nb_default_include_source_addrs; i++)
706 av_free(s1->default_include_source_addrs[i]);
707 av_freep(&s1->default_include_source_addrs);
708 for (i = 0; i < s1->nb_default_exclude_source_addrs; i++)
709 av_free(s1->default_exclude_source_addrs[i]);
710 av_freep(&s1->default_exclude_source_addrs);
711
a8475bbd
LB
712 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
713 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
714 return 0;
715}
44b70ce5 716#endif /* CONFIG_RTPDEC */
1617ad97 717
50aef03b 718void ff_rtsp_undo_setup(AVFormatContext *s, int send_packets)
93e7490e
MS
719{
720 RTSPState *rt = s->priv_data;
721 int i;
722
723 for (i = 0; i < rt->nb_rtsp_streams; i++) {
724 RTSPStream *rtsp_st = rt->rtsp_streams[i];
725 if (!rtsp_st)
726 continue;
727 if (rtsp_st->transport_priv) {
728 if (s->oformat) {
729 AVFormatContext *rtpctx = rtsp_st->transport_priv;
730 av_write_trailer(rtpctx);
731 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
50aef03b
MS
732 if (CONFIG_RTSP_MUXER && rtpctx->pb && send_packets)
733 ff_rtsp_tcp_write_packet(s, rtsp_st);
8e32b1f0 734 ffio_free_dyn_buf(&rtpctx->pb);
93e7490e 735 } else {
22a3212e 736 avio_close(rtpctx->pb);
93e7490e 737 }
b22dbb29 738 avformat_free_context(rtpctx);
604c9b11 739 } else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RDT)
93e7490e 740 ff_rdt_parse_close(rtsp_st->transport_priv);
604c9b11 741 else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RTP)
bfc6db44 742 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
743 }
744 rtsp_st->transport_priv = NULL;
745 if (rtsp_st->rtp_handle)
e52a9145 746 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
747 rtsp_st->rtp_handle = NULL;
748 }
749}
750
1ced9da3 751/* close and free RTSP streams */
3307e6ea 752void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 753{
52aa4338 754 RTSPState *rt = s->priv_data;
1f57d601 755 int i, j;
1ced9da3
LA
756 RTSPStream *rtsp_st;
757
50aef03b 758 ff_rtsp_undo_setup(s, 0);
c8965800 759 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
760 rtsp_st = rt->rtsp_streams[i];
761 if (rtsp_st) {
e72605f8 762 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context) {
d594dbec
MS
763 if (rtsp_st->dynamic_handler->close)
764 rtsp_st->dynamic_handler->close(
e72605f8 765 rtsp_st->dynamic_protocol_context);
bb4a310b 766 av_free(rtsp_st->dynamic_protocol_context);
e72605f8 767 }
1f57d601
ET
768 for (j = 0; j < rtsp_st->nb_include_source_addrs; j++)
769 av_free(rtsp_st->include_source_addrs[j]);
770 av_freep(&rtsp_st->include_source_addrs);
771 for (j = 0; j < rtsp_st->nb_exclude_source_addrs; j++)
772 av_free(rtsp_st->exclude_source_addrs[j]);
773 av_freep(&rtsp_st->exclude_source_addrs);
774
ea7f0807 775 av_free(rtsp_st);
1ced9da3
LA
776 }
777 }
778 av_free(rt->rtsp_streams);
779 if (rt->asf_ctx) {
cd3716b9 780 avformat_close_input(&rt->asf_ctx);
1ced9da3 781 }
604c9b11 782 if (CONFIG_RTPDEC && rt->ts)
1243c722 783 ff_mpegts_parse_close(rt->ts);
8c0ceafb 784 av_freep(&rt->protocols);
a8475bbd 785 av_free(rt->p);
96a7c975 786 av_free(rt->recvbuf);
1ced9da3
LA
787}
788
6e71c120 789int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
790{
791 RTSPState *rt = s->priv_data;
792 AVStream *st = NULL;
3f055f8f
MS
793 int reordering_queue_size = rt->reordering_queue_size;
794 if (reordering_queue_size < 0) {
795 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
796 reordering_queue_size = 0;
797 else
798 reordering_queue_size = RTP_REORDER_QUEUE_DEFAULT_SIZE;
799 }
1ced9da3
LA
800
801 /* open the RTP context */
802 if (rtsp_st->stream_index >= 0)
803 st = s->streams[rtsp_st->stream_index];
804 if (!st)
805 s->ctx_flags |= AVFMTCTX_NOHEADER;
806
604c9b11 807 if (CONFIG_RTSP_MUXER && s->oformat) {
46c0cbd5
VG
808 int ret = ff_rtp_chain_mux_open((AVFormatContext **)&rtsp_st->transport_priv,
809 s, st, rtsp_st->rtp_handle,
8034130e
LB
810 RTSP_TCP_MAX_PACKET_SIZE,
811 rtsp_st->stream_index);
c2bfd816 812 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 813 rtsp_st->rtp_handle = NULL;
68c81308
MS
814 if (ret < 0)
815 return ret;
f797b134 816 st->time_base = ((AVFormatContext*)rtsp_st->transport_priv)->streams[0]->time_base;
df8cf076
MS
817 } else if (rt->transport == RTSP_TRANSPORT_RAW) {
818 return 0; // Don't need to open any parser here
604c9b11 819 } else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
820 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
821 rtsp_st->dynamic_protocol_context,
822 rtsp_st->dynamic_handler);
44b70ce5 823 else if (CONFIG_RTPDEC)
3f95f0dd 824 rtsp_st->transport_priv = ff_rtp_parse_open(s, st,
58ee0991 825 rtsp_st->sdp_payload_type,
3f055f8f 826 reordering_queue_size);
1ced9da3
LA
827
828 if (!rtsp_st->transport_priv) {
829 return AVERROR(ENOMEM);
604c9b11 830 } else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RTP) {
bc2a3296
MS
831 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
832 rtpctx->ssrc = rtsp_st->ssrc;
c8965800 833 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
834 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
835 rtsp_st->dynamic_protocol_context,
836 rtsp_st->dynamic_handler);
1ced9da3 837 }
424da308
MS
838 if (rtsp_st->crypto_suite[0])
839 ff_rtp_parse_set_crypto(rtsp_st->transport_priv,
840 rtsp_st->crypto_suite,
841 rtsp_st->crypto_params);
1ced9da3
LA
842 }
843
844 return 0;
845}
846
6f5a3d0a 847#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
848static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
849{
ddce7dab
MR
850 const char *q;
851 char *p;
1617ad97
FB
852 int v;
853
ddce7dab
MR
854 q = *pp;
855 q += strspn(q, SPACE_CHARS);
856 v = strtol(q, &p, 10);
1617ad97
FB
857 if (*p == '-') {
858 p++;
859 *min_ptr = v;
ddce7dab 860 v = strtol(p, &p, 10);
1617ad97
FB
861 *max_ptr = v;
862 } else {
863 *min_ptr = v;
864 *max_ptr = v;
865 }
866 *pp = p;
867}
868
869/* XXX: only one transport specification is parsed */
2c17fb61
LB
870static void rtsp_parse_transport(AVFormatContext *s,
871 RTSPMessageHeader *reply, const char *p)
1617ad97
FB
872{
873 char transport_protocol[16];
874 char profile[16];
875 char lower_transport[16];
876 char parameter[16];
877 RTSPTransportField *th;
878 char buf[256];
115329f1 879
1617ad97 880 reply->nb_transports = 0;
115329f1 881
c8965800 882 for (;;) {
30619e6e 883 p += strspn(p, SPACE_CHARS);
1617ad97
FB
884 if (*p == '\0')
885 break;
886
887 th = &reply->transports[reply->nb_transports];
888
115329f1 889 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 890 "/", &p);
bb3244de 891 if (!av_strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
892 get_word_sep(profile, sizeof(profile), "/;,", &p);
893 lower_transport[0] = '\0';
894 /* rtp/avp/<protocol> */
895 if (*p == '/') {
7ecc634e
LB
896 get_word_sep(lower_transport, sizeof(lower_transport),
897 ";,", &p);
119b4668
RB
898 }
899 th->transport = RTSP_TRANSPORT_RTP;
bb3244de
RD
900 } else if (!av_strcasecmp (transport_protocol, "x-pn-tng") ||
901 !av_strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 902 /* x-pn-tng/<protocol> */
e1502118
LB
903 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
904 profile[0] = '\0';
119b4668 905 th->transport = RTSP_TRANSPORT_RDT;
df8cf076
MS
906 } else if (!av_strcasecmp(transport_protocol, "raw")) {
907 get_word_sep(profile, sizeof(profile), "/;,", &p);
908 lower_transport[0] = '\0';
909 /* raw/raw/<protocol> */
910 if (*p == '/') {
911 get_word_sep(lower_transport, sizeof(lower_transport),
912 ";,", &p);
913 }
914 th->transport = RTSP_TRANSPORT_RAW;
1617ad97 915 }
bb3244de 916 if (!av_strcasecmp(lower_transport, "TCP"))
90abbdba 917 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 918 else
90abbdba 919 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 920
1617ad97
FB
921 if (*p == ';')
922 p++;
923 /* get each parameter */
924 while (*p != '\0' && *p != ',') {
925 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
926 if (!strcmp(parameter, "port")) {
927 if (*p == '=') {
928 p++;
929 rtsp_parse_range(&th->port_min, &th->port_max, &p);
930 }
931 } else if (!strcmp(parameter, "client_port")) {
932 if (*p == '=') {
933 p++;
115329f1 934 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
935 &th->client_port_max, &p);
936 }
937 } else if (!strcmp(parameter, "server_port")) {
938 if (*p == '=') {
939 p++;
115329f1 940 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
941 &th->server_port_max, &p);
942 }
943 } else if (!strcmp(parameter, "interleaved")) {
944 if (*p == '=') {
945 p++;
115329f1 946 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
947 &th->interleaved_max, &p);
948 }
949 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
950 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
951 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
952 } else if (!strcmp(parameter, "ttl")) {
953 if (*p == '=') {
f21d5c90 954 char *end;
1617ad97 955 p++;
f21d5c90
MS
956 th->ttl = strtol(p, &end, 10);
957 p = end;
1617ad97
FB
958 }
959 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
960 if (*p == '=') {
961 p++;
962 get_word_sep(buf, sizeof(buf), ";,", &p);
2c17fb61 963 get_sockaddr(s, buf, &th->destination);
1617ad97 964 }
619298a8
JW
965 } else if (!strcmp(parameter, "source")) {
966 if (*p == '=') {
967 p++;
968 get_word_sep(buf, sizeof(buf), ";,", &p);
969 av_strlcpy(th->source, buf, sizeof(th->source));
970 }
45b06858
JO
971 } else if (!strcmp(parameter, "mode")) {
972 if (*p == '=') {
973 p++;
974 get_word_sep(buf, sizeof(buf), ";, ", &p);
975 if (!strcmp(buf, "record") ||
976 !strcmp(buf, "receive"))
977 th->mode_record = 1;
978 }
1617ad97 979 }
619298a8 980
1617ad97
FB
981 while (*p != ';' && *p != '\0' && *p != ',')
982 p++;
983 if (*p == ';')
984 p++;
985 }
986 if (*p == ',')
987 p++;
988
989 reply->nb_transports++;
b90adb0a
MS
990 if (reply->nb_transports >= RTSP_MAX_TRANSPORTS)
991 break;
1617ad97
FB
992 }
993}
994
29db7c3a
MS
995static void handle_rtp_info(RTSPState *rt, const char *url,
996 uint32_t seq, uint32_t rtptime)
997{
998 int i;
999 if (!rtptime || !url[0])
1000 return;
1001 if (rt->transport != RTSP_TRANSPORT_RTP)
1002 return;
1003 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1004 RTSPStream *rtsp_st = rt->rtsp_streams[i];
1005 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1006 if (!rtpctx)
1007 continue;
1008 if (!strcmp(rtsp_st->control_url, url)) {
1009 rtpctx->base_timestamp = rtptime;
1010 break;
1011 }
1012 }
1013}
1014
1015static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
1016{
1017 int read = 0;
1018 char key[20], value[1024], url[1024] = "";
1019 uint32_t seq = 0, rtptime = 0;
1020
1021 for (;;) {
1022 p += strspn(p, SPACE_CHARS);
1023 if (!*p)
1024 break;
1025 get_word_sep(key, sizeof(key), "=", &p);
1026 if (*p != '=')
1027 break;
1028 p++;
1029 get_word_sep(value, sizeof(value), ";, ", &p);
1030 read++;
1031 if (!strcmp(key, "url"))
1032 av_strlcpy(url, value, sizeof(url));
1033 else if (!strcmp(key, "seq"))
4515f9b5 1034 seq = strtoul(value, NULL, 10);
29db7c3a 1035 else if (!strcmp(key, "rtptime"))
4515f9b5 1036 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
1037 if (*p == ',') {
1038 handle_rtp_info(rt, url, seq, rtptime);
1039 url[0] = '\0';
1040 seq = rtptime = 0;
1041 read = 0;
1042 }
1043 if (*p)
1044 p++;
1045 }
1046 if (read > 0)
1047 handle_rtp_info(rt, url, seq, rtptime);
1048}
1049
2c17fb61
LB
1050void ff_rtsp_parse_line(AVFormatContext *s,
1051 RTSPMessageHeader *reply, const char *buf,
77223c53 1052 RTSPState *rt, const char *method)
1617ad97
FB
1053{
1054 const char *p;
1055
1056 /* NOTE: we do case independent match for broken servers */
1057 p = buf;
f7d78f36 1058 if (av_stristart(p, "Session:", &p)) {
30e79845 1059 int t;
1617ad97 1060 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
1061 if (av_stristart(p, ";timeout=", &p) &&
1062 (t = strtol(p, NULL, 10)) > 0) {
1063 reply->timeout = t;
1064 }
f7d78f36 1065 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 1066 reply->content_length = strtol(p, NULL, 10);
f7d78f36 1067 } else if (av_stristart(p, "Transport:", &p)) {
2c17fb61 1068 rtsp_parse_transport(s, reply, p);
f7d78f36 1069 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 1070 reply->seq = strtol(p, NULL, 10);
f7d78f36 1071 } else if (av_stristart(p, "Range:", &p)) {
31693e00 1072 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 1073 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 1074 p += strspn(p, SPACE_CHARS);
30aa6aed 1075 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 1076 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 1077 p += strspn(p, SPACE_CHARS);
7a86bafa 1078 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
1079 } else if (av_stristart(p, "Notice:", &p) ||
1080 av_stristart(p, "X-Notice:", &p)) {
1081 reply->notice = strtol(p, NULL, 10);
d243ba30 1082 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 1083 p += strspn(p, SPACE_CHARS);
d243ba30 1084 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 1085 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 1086 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
1087 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
1088 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 1089 p += strspn(p, SPACE_CHARS);
acc9ed14 1090 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 1091 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 1092 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
1093 if (method && !strcmp(method, "DESCRIBE"))
1094 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
1095 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
1096 p += strspn(p, SPACE_CHARS);
1097 if (method && !strcmp(method, "PLAY"))
1098 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
1099 } else if (av_stristart(p, "Public:", &p) && rt) {
1100 if (strstr(p, "GET_PARAMETER") &&
1101 method && !strcmp(method, "OPTIONS"))
1102 rt->get_parameter_supported = 1;
30eae325
MS
1103 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
1104 p += strspn(p, SPACE_CHARS);
1105 rt->accept_dynamic_rate = atoi(p);
fcd0298c
JO
1106 } else if (av_stristart(p, "Content-Type:", &p)) {
1107 p += strspn(p, SPACE_CHARS);
1108 av_strlcpy(reply->content_type, p, sizeof(reply->content_type));
1617ad97
FB
1109 }
1110}
1111
b7b8fc34 1112/* skip a RTP/TCP interleaved packet */
ec55edba 1113void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
1114{
1115 RTSPState *rt = s->priv_data;
1116 int ret, len, len1;
1117 uint8_t buf[1024];
1118
dce37564 1119 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
1120 if (ret != 3)
1121 return;
80fb8234 1122 len = AV_RB16(buf + 1);
67c9cd69 1123
1a3eb042 1124 av_log(s, AV_LOG_TRACE, "skipping RTP packet len=%d\n", len);
67c9cd69 1125
b7b8fc34
FB
1126 /* skip payload */
1127 while (len > 0) {
1128 len1 = len;
1129 if (len1 > sizeof(buf))
1130 len1 = sizeof(buf);
dce37564 1131 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
1132 if (ret != len1)
1133 return;
1134 len -= len1;
1135 }
1136}
1617ad97 1137
3307e6ea 1138int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 1139 unsigned char **content_ptr,
3df54c6b 1140 int return_on_interleaved_data, const char *method)
1617ad97
FB
1141{
1142 RTSPState *rt = s->priv_data;
1143 char buf[4096], buf1[1024], *q;
1144 unsigned char ch;
1145 const char *p;
1a6b9a98 1146 int ret, content_length, line_count = 0, request = 0;
1617ad97
FB
1147 unsigned char *content = NULL;
1148
1a6b9a98
TW
1149start:
1150 line_count = 0;
1151 request = 0;
1152 content = NULL;
d541a7d2 1153 memset(reply, 0, sizeof(*reply));
1617ad97 1154
1617ad97 1155 /* parse reply (XXX: use buffers) */
1617ad97 1156 rt->last_reply[0] = '\0';
c8965800 1157 for (;;) {
1617ad97 1158 q = buf;
c8965800 1159 for (;;) {
dce37564 1160 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
1a3eb042 1161 av_log(s, AV_LOG_TRACE, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 1162 if (ret != 1)
2401660d 1163 return AVERROR_EOF;
1617ad97
FB
1164 if (ch == '\n')
1165 break;
e02dcdf6 1166 if (ch == '$' && q == buf) {
7e726132
RB
1167 if (return_on_interleaved_data) {
1168 return 1;
1169 } else
ec55edba 1170 ff_rtsp_skip_packet(s);
b7b8fc34 1171 } else if (ch != '\r') {
1617ad97
FB
1172 if ((q - buf) < sizeof(buf) - 1)
1173 *q++ = ch;
1174 }
1175 }
1176 *q = '\0';
67c9cd69 1177
1a3eb042 1178 av_log(s, AV_LOG_TRACE, "line='%s'\n", buf);
67c9cd69 1179
1617ad97
FB
1180 /* test if last line */
1181 if (buf[0] == '\0')
1182 break;
1183 p = buf;
1184 if (line_count == 0) {
1185 /* get reply code */
1186 get_word(buf1, sizeof(buf1), &p);
1a6b9a98
TW
1187 if (!strncmp(buf1, "RTSP/", 5)) {
1188 get_word(buf1, sizeof(buf1), &p);
1189 reply->status_code = atoi(buf1);
1190 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1191 } else {
1192 av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method
1193 get_word(buf1, sizeof(buf1), &p); // object
1194 request = 1;
1195 }
1617ad97 1196 } else {
2c17fb61 1197 ff_rtsp_parse_line(s, reply, p, rt, method);
75e61b0e
MR
1198 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
1199 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
1200 }
1201 line_count++;
1202 }
115329f1 1203
1a6b9a98 1204 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0' && !request)
75e61b0e 1205 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 1206
1617ad97
FB
1207 content_length = reply->content_length;
1208 if (content_length > 0) {
1209 /* leave some room for a trailing '\0' (useful for simple parsing) */
1210 content = av_malloc(content_length + 1);
460b509a
ML
1211 if (!content)
1212 return AVERROR(ENOMEM);
dce37564 1213 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
1214 content[content_length] = '\0';
1215 }
1216 if (content_ptr)
1217 *content_ptr = content;
e2e2e7dd
AB
1218 else
1219 av_free(content);
7e726132 1220
1a6b9a98
TW
1221 if (request) {
1222 char buf[1024];
1223 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1224 const char* ptr = buf;
1225
1226 if (!strcmp(reply->reason, "OPTIONS")) {
1227 snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n");
1228 if (reply->seq)
1229 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq);
1230 if (reply->session_id[0])
1231 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n",
1232 reply->session_id);
1233 } else {
1234 snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n");
1235 }
1236 av_strlcat(buf, "\r\n", sizeof(buf));
1237
1238 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1239 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1240 ptr = base64buf;
1241 }
1242 ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr));
1243
6df9d9b5 1244 rt->last_cmd_time = av_gettime_relative();
1a6b9a98
TW
1245 /* Even if the request from the server had data, it is not the data
1246 * that the caller wants or expects. The memory could also be leaked
1247 * if the actual following reply has content data. */
1248 if (content_ptr)
1249 av_freep(content_ptr);
1250 /* If method is set, this is called from ff_rtsp_send_cmd,
1251 * where a reply to exactly this request is awaited. For
705eeb5e 1252 * callers from within packet receiving, we just want to
1a6b9a98
TW
1253 * return to the caller and go back to receiving packets. */
1254 if (method)
1255 goto start;
1256 return 0;
1257 }
1258
7ed8211b
LB
1259 if (rt->seq != reply->seq) {
1260 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
1261 rt->seq, reply->seq);
1262 }
1263
fccb1770
RB
1264 /* EOS */
1265 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
1266 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 1267 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 1268 rt->state = RTSP_STATE_IDLE;
c8965800 1269 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 1270 return AVERROR(EIO); /* data or server error */
c8965800 1271 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
1272 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
1273 return AVERROR(EPERM);
1274
7e726132 1275 return 0;
1617ad97
FB
1276}
1277
57c4d01e
DEP
1278/**
1279 * Send a command to the RTSP server without waiting for the reply.
1280 *
1281 * @param s RTSP (de)muxer context
1282 * @param method the method for the request
1283 * @param url the target url for the request
1284 * @param headers extra header lines to include in the request
1285 * @param send_content if non-null, the data to send as request body content
1286 * @param send_content_length the length of the send_content data, or 0 if
1287 * send_content is null
1288 *
1289 * @return zero if success, nonzero otherwise
1290 */
e926b5ce
DB
1291static int rtsp_send_cmd_with_content_async(AVFormatContext *s,
1292 const char *method, const char *url,
1293 const char *headers,
1294 const unsigned char *send_content,
1295 int send_content_length)
29b9f58b
RB
1296{
1297 RTSPState *rt = s->priv_data;
f5d33f52
JA
1298 char buf[4096], *out_buf;
1299 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 1300
f5d33f52
JA
1301 /* Add in RTSP headers */
1302 out_buf = buf;
29b9f58b 1303 rt->seq++;
b17d11c6
MS
1304 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1305 if (headers)
1306 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1307 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
1dd1b233 1308 av_strlcatf(buf, sizeof(buf), "User-Agent: %s\r\n", LIBAVFORMAT_IDENT);
b17d11c6
MS
1309 if (rt->session_id[0] != '\0' && (!headers ||
1310 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1311 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1312 }
aa8bf2fb
MS
1313 if (rt->auth[0]) {
1314 char *str = ff_http_auth_create_response(&rt->auth_state,
1315 rt->auth, url, method);
1316 if (str)
1317 av_strlcat(buf, str, sizeof(buf));
1318 av_free(str);
1319 }
dfd017bf
MS
1320 if (send_content_length > 0 && send_content)
1321 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1322 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1323
f5d33f52
JA
1324 /* base64 encode rtsp if tunneling */
1325 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1326 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1327 out_buf = base64buf;
1328 }
1329
1a3eb042 1330 av_log(s, AV_LOG_TRACE, "Sending:\n%s--\n", buf);
67c9cd69 1331
925e908b 1332 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
1333 if (send_content_length > 0 && send_content) {
1334 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1335 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1336 "with content data not supported\n");
1337 return AVERROR_PATCHWELCOME;
1338 }
925e908b 1339 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1340 }
6df9d9b5 1341 rt->last_cmd_time = av_gettime_relative();
d0382374
JA
1342
1343 return 0;
30e79845
RB
1344}
1345
d0382374 1346int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1347 const char *url, const char *headers)
dfd017bf 1348{
e926b5ce 1349 return rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1350}
1351
d0382374 1352int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1353 const char *headers, RTSPMessageHeader *reply,
1354 unsigned char **content_ptr)
30e79845 1355{
d0382374 1356 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1357 content_ptr, NULL, 0);
29b9f58b
RB
1358}
1359
d0382374 1360int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1361 const char *method, const char *url,
1362 const char *header,
1363 RTSPMessageHeader *reply,
1364 unsigned char **content_ptr,
1365 const unsigned char *send_content,
1366 int send_content_length)
dfd017bf 1367{
30af0779
MS
1368 RTSPState *rt = s->priv_data;
1369 HTTPAuthType cur_auth_type;
2f96cc1f 1370 int ret, attempts = 0;
30af0779
MS
1371
1372retry:
1373 cur_auth_type = rt->auth_state.auth_type;
e926b5ce
DB
1374 if ((ret = rtsp_send_cmd_with_content_async(s, method, url, header,
1375 send_content,
1376 send_content_length)))
d0382374 1377 return ret;
dfd017bf 1378
3df54c6b 1379 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1380 return ret;
2f96cc1f 1381 attempts++;
30af0779 1382
2f96cc1f
MS
1383 if (reply->status_code == 401 &&
1384 (cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) &&
1385 rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2)
30af0779 1386 goto retry;
d0382374 1387
bf55cf19 1388 if (reply->status_code > 400){
d93fdcbf 1389 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1390 method,
d93fdcbf
LB
1391 reply->status_code,
1392 reply->reason);
bf55cf19
LB
1393 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1394 }
1395
d0382374 1396 return 0;
dfd017bf
MS
1397}
1398
fef5649a 1399int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1400 int lower_transport, const char *real_challenge)
1617ad97
FB
1401{
1402 RTSPState *rt = s->priv_data;
58f09785 1403 int rtx = 0, j, i, err, interleave = 0, port_off;
1617ad97 1404 RTSPStream *rtsp_st;
a9e534d5 1405 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1406 char cmd[2048];
e9dea59f
RB
1407 const char *trans_pref;
1408
119b4668 1409 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f 1410 trans_pref = "x-pn-tng";
df8cf076
MS
1411 else if (rt->transport == RTSP_TRANSPORT_RAW)
1412 trans_pref = "RAW/RAW";
e9dea59f
RB
1413 else
1414 trans_pref = "RTP/AVP";
115329f1 1415
30e79845
RB
1416 /* default timeout: 1 minute */
1417 rt->timeout = 60;
1418
1617ad97
FB
1419 /* for each stream, make the setup request */
1420 /* XXX: we assume the same server is used for the control of each
c8965800 1421 * RTSP stream */
d1ccf0e0 1422
58f09785
DV
1423 /* Choose a random starting offset within the first half of the
1424 * port range, to allow for a number of ports to try even if the offset
1425 * happens to be at the end of the random range. */
1426 port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2);
1427 /* even random offset */
1428 port_off -= port_off & 0x01;
1429
1430 for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1431 char transport[2048];
1432
f75e3da5 1433 /*
f830c9a4
RB
1434 * WMS serves all UDP data over a single connection, the RTX, which
1435 * isn't necessarily the first in the SDP but has to be the first
1436 * to be set up, else the second/third SETUP will fail with a 461.
1437 */
1438 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1439 rt->server_type == RTSP_SERVER_WMS) {
1440 if (i == 0) {
1441 /* rtx first */
1442 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1443 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1444 if (len >= 4 &&
c8965800
RB
1445 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1446 "/rtx"))
f830c9a4
RB
1447 break;
1448 }
1449 if (rtx == rt->nb_rtsp_streams)
1450 return -1; /* no RTX found */
1451 rtsp_st = rt->rtsp_streams[rtx];
1452 } else
1453 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1454 } else
2fea9650 1455 rtsp_st = rt->rtsp_streams[i];
1617ad97 1456
1617ad97 1457 /* RTP/UDP */
90abbdba 1458 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1459 char buf[256];
85fb7b34 1460
f830c9a4
RB
1461 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1462 port = reply->transports[0].client_port_min;
1463 goto have_port;
1464 }
1465
85fb7b34 1466 /* first try in specified port range */
dbb06b8c 1467 while (j <= rt->rtp_port_max) {
e3ec6fe7
LB
1468 AVDictionary *opts = map_to_opts(rt);
1469
bc495bad
DV
1470 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1471 "?localport=%d", j);
1472 /* we will use two ports per rtp stream (rtp and rtcp) */
1473 j += 2;
e3ec6fe7 1474 err = ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
fab8156b 1475 &s->interrupt_callback, &opts, rt->protocols, NULL);
e3ec6fe7
LB
1476
1477 av_dict_free(&opts);
1478
1479 if (!err)
bc495bad 1480 goto rtp_opened;
1617ad97 1481 }
85fb7b34 1482
a3b058b7
MS
1483 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1484 err = AVERROR(EIO);
1485 goto fail;
85fb7b34
FB
1486
1487 rtp_opened:
bfc6db44 1488 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1489 have_port:
0ad306bc 1490 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1491 "%s/UDP;", trans_pref);
1492 if (rt->server_type != RTSP_SERVER_REAL)
1493 av_strlcat(transport, "unicast;", sizeof(transport));
1494 av_strlcatf(transport, sizeof(transport),
1495 "client_port=%d", port);
f830c9a4
RB
1496 if (rt->transport == RTSP_TRANSPORT_RTP &&
1497 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1498 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1499 }
1500
1501 /* RTP/TCP */
90abbdba 1502 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1503 /* For WMS streams, the application streams are only used for
090438cc
RB
1504 * UDP. When trying to set it up for TCP streams, the server
1505 * will return an error. Therefore, we skip those streams. */
1506 if (rt->server_type == RTSP_SERVER_WMS &&
45600148 1507 (rtsp_st->stream_index < 0 ||
9200514a 1508 s->streams[rtsp_st->stream_index]->codecpar->codec_type ==
45600148 1509 AVMEDIA_TYPE_DATA))
090438cc 1510 continue;
0ad306bc 1511 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1512 "%s/TCP;", trans_pref);
895678f8 1513 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1514 av_strlcat(transport, "unicast;", sizeof(transport));
1515 av_strlcatf(transport, sizeof(transport),
1516 "interleaved=%d-%d",
1517 interleave, interleave + 1);
1518 interleave += 2;
1617ad97
FB
1519 }
1520
90abbdba 1521 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1522 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1523 "%s/UDP;multicast", trans_pref);
1617ad97 1524 }
69adcc4f 1525 if (s->oformat) {
bbc80386 1526 av_strlcat(transport, ";mode=record", sizeof(transport));
69adcc4f 1527 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1528 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1529 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1530 snprintf(cmd, sizeof(cmd),
b6892136 1531 "Transport: %s\r\n",
b17d11c6 1532 transport);
76b0d03d
MS
1533 if (rt->accept_dynamic_rate)
1534 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
604c9b11 1535 if (CONFIG_RTPDEC && i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1536 char real_res[41], real_csum[9];
1537 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1538 real_challenge);
1539 av_strlcatf(cmd, sizeof(cmd),
1540 "If-Match: %s\r\n"
1541 "RealChallenge2: %s, sd=%s\r\n",
1542 rt->session_id, real_res, real_csum);
1543 }
b17d11c6 1544 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1545 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1546 err = 1;
1547 goto fail;
7e6ca34f
RB
1548 } else if (reply->status_code != RTSP_STATUS_OK ||
1549 reply->nb_transports != 1) {
1617ad97
FB
1550 err = AVERROR_INVALIDDATA;
1551 goto fail;
1552 }
1553
1554 /* XXX: same protocol for all streams is required */
1555 if (i > 0) {
119b4668
RB
1556 if (reply->transports[0].lower_transport != rt->lower_transport ||
1557 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1558 err = AVERROR_INVALIDDATA;
1559 goto fail;
1560 }
1561 } else {
90abbdba 1562 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1563 rt->transport = reply->transports[0].transport;
1617ad97
FB
1564 }
1565
8c579c1c
MS
1566 /* Fail if the server responded with another lower transport mode
1567 * than what we requested. */
1568 if (reply->transports[0].lower_transport != lower_transport) {
1569 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1570 err = AVERROR_INVALIDDATA;
1571 goto fail;
1617ad97
FB
1572 }
1573
90abbdba
RB
1574 switch(reply->transports[0].lower_transport) {
1575 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1576 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1577 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1578 break;
115329f1 1579
c8965800 1580 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1581 char url[1024], options[30] = "";
fd8f91e3 1582 const char *peer = host;
c8965800 1583
9867aea5 1584 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
a92c30d7 1585 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8 1586 /* Use source address if specified */
fd8f91e3
MS
1587 if (reply->transports[0].source[0])
1588 peer = reply->transports[0].source;
1589 ff_url_join(url, sizeof(url), "rtp", NULL, peer,
1590 reply->transports[0].server_port_min, "%s", options);
c8965800 1591 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1592 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1593 err = AVERROR_INVALIDDATA;
1594 goto fail;
1617ad97
FB
1595 }
1596 break;
c8965800
RB
1597 }
1598 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
6294d708 1599 char url[1024], namebuf[50], optbuf[20] = "";
7934b15d 1600 struct sockaddr_storage addr;
c8965800
RB
1601 int port, ttl;
1602
7934b15d
MS
1603 if (reply->transports[0].destination.ss_family) {
1604 addr = reply->transports[0].destination;
c8965800
RB
1605 port = reply->transports[0].port_min;
1606 ttl = reply->transports[0].ttl;
1607 } else {
7934b15d 1608 addr = rtsp_st->sdp_ip;
c8965800
RB
1609 port = rtsp_st->sdp_port;
1610 ttl = rtsp_st->sdp_ttl;
1611 }
6294d708
MS
1612 if (ttl > 0)
1613 snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
7934b15d
MS
1614 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1615 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1616 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
6294d708 1617 port, "%s", optbuf);
6f1b7b39 1618 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
fab8156b 1619 &s->interrupt_callback, NULL, rt->protocols, NULL) < 0) {
c8965800
RB
1620 err = AVERROR_INVALIDDATA;
1621 goto fail;
1617ad97
FB
1622 }
1623 break;
1624 }
c8965800 1625 }
d1ccf0e0 1626
6e71c120 1627 if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1628 goto fail;
1617ad97
FB
1629 }
1630
62c3c8ca 1631 if (rt->nb_rtsp_streams && reply->timeout > 0)
30e79845
RB
1632 rt->timeout = reply->timeout;
1633
2e889ae4 1634 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1635 rt->need_subscription = 1;
1636
53620bba
RB
1637 return 0;
1638
1639fail:
50aef03b 1640 ff_rtsp_undo_setup(s, 0);
53620bba
RB
1641 return err;
1642}
1643
b8c2c41d
JA
1644void ff_rtsp_close_connections(AVFormatContext *s)
1645{
1646 RTSPState *rt = s->priv_data;
e52a9145
AK
1647 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1648 ffurl_close(rt->rtsp_hd);
6217b645 1649 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1650}
1651
3307e6ea 1652int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1653{
1654 RTSPState *rt = s->priv_data;
8b2e9636
LB
1655 char proto[128], host[1024], path[1024];
1656 char tcpname[1024], cmd[2048], auth[128];
1657 const char *lower_rtsp_proto = "tcp";
03f8fc08 1658 int port, err, tcp_fd;
354b7573 1659 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1660 int lower_transport_mask = 0;
8b2e9636 1661 int default_port = RTSP_DEFAULT_PORT;
2762a7a2 1662 char real_challenge[64] = "";
03f8fc08
MS
1663 struct sockaddr_storage peer;
1664 socklen_t peer_len = sizeof(peer);
57b5555c 1665
dbb06b8c
MS
1666 if (rt->rtp_port_max < rt->rtp_port_min) {
1667 av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1668 "than min port %d\n", rt->rtp_port_max,
1669 rt->rtp_port_min);
1670 return AVERROR(EINVAL);
1671 }
1672
57b5555c
MS
1673 if (!ff_network_init())
1674 return AVERROR(EIO);
eca4850c 1675
8c0ceafb 1676 if (!rt->protocols) {
ec4c4839
AK
1677 rt->protocols = ffurl_get_protocols(s->protocol_whitelist,
1678 s->protocol_blacklist);
8c0ceafb
AK
1679 if (!rt->protocols)
1680 return AVERROR(ENOMEM);
1681 }
1682
4fa57d52 1683 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1684 s->max_delay = s->iformat ? DEFAULT_REORDERING_DELAY : 0;
4fa57d52 1685
f5d33f52 1686 rt->control_transport = RTSP_MODE_PLAIN;
eca4850c
MS
1687 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1688 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1689 rt->control_transport = RTSP_MODE_TUNNEL;
1690 }
1691 /* Only pass through valid flags from here */
1692 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
eca4850c
MS
1693
1694redirect:
53620bba 1695 /* extract hostname and port */
8b2e9636 1696 av_url_split(proto, sizeof(proto), auth, sizeof(auth),
f984dcf6 1697 host, sizeof(host), &port, path, sizeof(path), s->filename);
8b2e9636
LB
1698
1699 if (!strcmp(proto, "rtsps")) {
1700 lower_rtsp_proto = "tls";
1701 default_port = RTSPS_DEFAULT_PORT;
1702 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1703 }
1704
f9337897 1705 if (*auth) {
aa8bf2fb 1706 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1707 }
53620bba 1708 if (port < 0)
8b2e9636
LB
1709 port = default_port;
1710
1711 lower_transport_mask = rt->lower_transport_mask;
53620bba 1712
90abbdba 1713 if (!lower_transport_mask)
2a1d51c5 1714 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1715
3e24c770 1716 if (s->oformat) {
b7dc88fc
MS
1717 /* Only UDP or TCP - UDP multicast isn't supported. */
1718 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1719 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1720 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1721 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1722 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1723 err = AVERROR(EINVAL);
1724 goto fail;
1725 }
1726 }
1727
4bc5cc23
MS
1728 /* Construct the URI used in request; this is similar to s->filename,
1729 * but with authentication credentials removed and RTSP specific options
1730 * stripped out. */
8b2e9636 1731 ff_url_join(rt->control_uri, sizeof(rt->control_uri), proto, NULL,
4bc5cc23
MS
1732 host, port, "%s", path);
1733
f5d33f52
JA
1734 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1735 /* set up initial handshake for tunneling */
1736 char httpname[1024];
1737 char sessioncookie[17];
1738 char headers[1024];
1739
10ed37b5 1740 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1741 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1742 av_get_random_seed(), av_get_random_seed());
1743
1744 /* GET requests */
6f1b7b39 1745 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
8c0ceafb 1746 &s->interrupt_callback, rt->protocols) < 0) {
f5d33f52
JA
1747 err = AVERROR(EIO);
1748 goto fail;
1749 }
1750
1751 /* generate GET headers */
1752 snprintf(headers, sizeof(headers),
1753 "x-sessioncookie: %s\r\n"
1754 "Accept: application/x-rtsp-tunnelled\r\n"
1755 "Pragma: no-cache\r\n"
1756 "Cache-Control: no-cache\r\n",
1757 sessioncookie);
196bf28c 1758 av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
f5d33f52
JA
1759
1760 /* complete the connection */
ddffc2fd 1761 if (ffurl_connect(rt->rtsp_hd, NULL)) {
f5d33f52
JA
1762 err = AVERROR(EIO);
1763 goto fail;
1764 }
1765
1766 /* POST requests */
6f1b7b39 1767 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
8c0ceafb 1768 &s->interrupt_callback, rt->protocols) < 0 ) {
f5d33f52
JA
1769 err = AVERROR(EIO);
1770 goto fail;
1771 }
1772
1773 /* generate POST headers */
1774 snprintf(headers, sizeof(headers),
1775 "x-sessioncookie: %s\r\n"
1776 "Content-Type: application/x-rtsp-tunnelled\r\n"
1777 "Pragma: no-cache\r\n"
1778 "Cache-Control: no-cache\r\n"
1779 "Content-Length: 32767\r\n"
1780 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1781 sessioncookie);
196bf28c 1782 av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
6149485f 1783 av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
f5d33f52 1784
a8ead332
MS
1785 /* Initialize the authentication state for the POST session. The HTTP
1786 * protocol implementation doesn't properly handle multi-pass
1787 * authentication for POST requests, since it would require one of
1788 * the following:
1789 * - implementing Expect: 100-continue, which many HTTP servers
1790 * don't support anyway, even less the RTSP servers that do HTTP
1791 * tunneling
1792 * - sending the whole POST data until getting a 401 reply specifying
1793 * what authentication method to use, then resending all that data
1794 * - waiting for potential 401 replies directly after sending the
1795 * POST header (waiting for some unspecified time)
1796 * Therefore, we copy the full auth state, which works for both basic
1797 * and digest. (For digest, we would have to synchronize the nonce
1798 * count variable between the two sessions, if we'd do more requests
1799 * with the original session, though.)
1800 */
1801 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1802
9290f15d 1803 /* complete the connection */
ddffc2fd 1804 if (ffurl_connect(rt->rtsp_hd_out, NULL)) {
9290f15d
MS
1805 err = AVERROR(EIO);
1806 goto fail;
1807 }
f5d33f52 1808 } else {
48e77473 1809 /* open the tcp connection */
8b2e9636
LB
1810 ff_url_join(tcpname, sizeof(tcpname), lower_rtsp_proto, NULL,
1811 host, port, NULL);
6f1b7b39 1812 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
fab8156b 1813 &s->interrupt_callback, NULL, rt->protocols, NULL) < 0) {
41874d0a
JA
1814 err = AVERROR(EIO);
1815 goto fail;
1816 }
00e4a1f4 1817 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1818 }
53620bba
RB
1819 rt->seq = 0;
1820
1869ea03 1821 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
76ccf114
VG
1822 if (tcp_fd < 0) {
1823 err = tcp_fd;
1824 goto fail;
1825 }
03f8fc08
MS
1826 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1827 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1828 NULL, 0, NI_NUMERICHOST);
1829 }
1830
c8965800
RB
1831 /* request options supported by the server; this also detects server
1832 * type */
1cf151e9 1833 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1834 cmd[0] = 0;
2e889ae4 1835 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1836 av_strlcat(cmd,
f75e3da5 1837 /*
1cf151e9
RB
1838 * The following entries are required for proper
1839 * streaming from a Realmedia server. They are
1840 * interdependent in some way although we currently
1841 * don't quite understand how. Values were copied
1842 * from mplayer SVN r23589.
f75e3da5
DB
1843 * ClientChallenge is a 16-byte ID in hex
1844 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1845 */
1846 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1847 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1848 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1849 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1850 sizeof(cmd));
b17d11c6 1851 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1852 if (reply->status_code != RTSP_STATUS_OK) {
1853 err = AVERROR_INVALIDDATA;
1854 goto fail;
1855 }
1856
1857 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1858 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1859 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1860 continue;
bb3244de 1861 } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
7a86bafa 1862 rt->server_type = RTSP_SERVER_WMS;
c8965800 1863 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1864 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1865 break;
1866 }
1867
604c9b11 1868 if (CONFIG_RTSP_DEMUXER && s->iformat)
0526c6f7 1869 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1870 else if (CONFIG_RTSP_MUXER)
c2688f3a 1871 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1872 if (err)
53620bba 1873 goto fail;
53620bba 1874
8a8754d8 1875 do {
c8965800
RB
1876 int lower_transport = ff_log2_tab[lower_transport_mask &
1877 ~(lower_transport_mask - 1)];
8a8754d8 1878
fef5649a 1879 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1880 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1881 real_challenge : NULL);
8a8754d8 1882 if (err < 0)
7e6ca34f 1883 goto fail;
90abbdba
RB
1884 lower_transport_mask &= ~(1 << lower_transport);
1885 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1886 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1887 goto fail;
1888 }
1889 } while (err);
53620bba 1890
2762a7a2
MS
1891 rt->lower_transport_mask = lower_transport_mask;
1892 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1893 rt->state = RTSP_STATE_IDLE;
c8965800 1894 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1895 return 0;
1896 fail:
3307e6ea 1897 ff_rtsp_close_streams(s);
b8c2c41d 1898 ff_rtsp_close_connections(s);
35cfd646 1899 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30 1900 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
2f172f1a 1901 rt->session_id[0] = '\0';
d243ba30
LB
1902 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1903 reply->status_code,
1904 s->filename);
1905 goto redirect;
1906 }
57b5555c 1907 ff_network_close();
1617ad97
FB
1908 return err;
1909}
2e802e38 1910#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1911
44b70ce5 1912#if CONFIG_RTPDEC
0e59034e 1913static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1914 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1915{
1916 RTSPState *rt = s->priv_data;
1917 RTSPStream *rtsp_st;
a8475bbd
LB
1918 int n, i, ret, tcp_fd, timeout_cnt = 0;
1919 int max_p = 0;
1920 struct pollfd *p = rt->p;
e7993ece 1921 int *fds = NULL, fdsnum, fdsidx;
0e59034e 1922
c8965800 1923 for (;;) {
9957cdbf 1924 if (ff_check_interrupt(&s->interrupt_callback))
c76374c6 1925 return AVERROR_EXIT;
6df9d9b5 1926 if (wait_end && wait_end - av_gettime_relative() < 0)
321259c1 1927 return AVERROR(EAGAIN);
a8475bbd 1928 max_p = 0;
0e59034e 1929 if (rt->rtsp_hd) {
1869ea03 1930 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1931 p[max_p].fd = tcp_fd;
1932 p[max_p++].events = POLLIN;
0e59034e 1933 } else {
0e59034e
RB
1934 tcp_fd = -1;
1935 }
c8965800 1936 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1937 rtsp_st = rt->rtsp_streams[i];
1938 if (rtsp_st->rtp_handle) {
e7993ece
JO
1939 if (ret = ffurl_get_multi_file_handle(rtsp_st->rtp_handle,
1940 &fds, &fdsnum)) {
1941 av_log(s, AV_LOG_ERROR, "Unable to recover rtp ports\n");
1942 return ret;
1943 }
1944 if (fdsnum != 2) {
1945 av_log(s, AV_LOG_ERROR,
1946 "Number of fds %d not supported\n", fdsnum);
1947 return AVERROR_INVALIDDATA;
1948 }
1949 for (fdsidx = 0; fdsidx < fdsnum; fdsidx++) {
1950 p[max_p].fd = fds[fdsidx];
1951 p[max_p++].events = POLLIN;
1952 }
1953 av_free(fds);
0e59034e
RB
1954 }
1955 }
a8475bbd 1956 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1957 if (n > 0) {
a8475bbd 1958 int j = 1 - (tcp_fd == -1);
9cba6f5f 1959 timeout_cnt = 0;
c8965800 1960 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1961 rtsp_st = rt->rtsp_streams[i];
1962 if (rtsp_st->rtp_handle) {
a8475bbd 1963 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1964 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1965 if (ret > 0) {
1966 *prtsp_st = rtsp_st;
1967 return ret;
1968 }
1969 }
a8475bbd 1970 j+=2;
0e59034e
RB
1971 }
1972 }
5fe8021a 1973#if CONFIG_RTSP_DEMUXER
a8475bbd 1974 if (tcp_fd != -1 && p[0].revents & POLLIN) {
a8ad6ffa
JO
1975 if (rt->rtsp_flags & RTSP_FLAG_LISTEN) {
1976 if (rt->state == RTSP_STATE_STREAMING) {
1977 if (!ff_rtsp_parse_streaming_commands(s))
1978 return AVERROR_EOF;
1979 else
1980 av_log(s, AV_LOG_WARNING,
1981 "Unable to answer to TEARDOWN\n");
1982 } else
1983 return 0;
1984 } else {
1985 RTSPMessageHeader reply;
1986 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
1987 if (ret < 0)
1988 return ret;
1989 /* XXX: parse message */
1990 if (rt->state != RTSP_STATE_STREAMING)
1991 return 0;
1992 }
0e59034e 1993 }
5fe8021a 1994#endif
9cba6f5f 1995 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1996 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1997 } else if (n < 0 && errno != EINTR)
1998 return AVERROR(errno);
0e59034e
RB
1999 }
2000}
2001
e96406ed
MS
2002static int pick_stream(AVFormatContext *s, RTSPStream **rtsp_st,
2003 const uint8_t *buf, int len)
2004{
2005 RTSPState *rt = s->priv_data;
2006 int i;
2007 if (len < 0)
2008 return len;
2009 if (rt->nb_rtsp_streams == 1) {
2010 *rtsp_st = rt->rtsp_streams[0];
2011 return len;
2012 }
2013 if (len >= 8 && rt->transport == RTSP_TRANSPORT_RTP) {
2014 if (RTP_PT_IS_RTCP(rt->recvbuf[1])) {
2015 int no_ssrc = 0;
2016 for (i = 0; i < rt->nb_rtsp_streams; i++) {
2017 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
2018 if (!rtpctx)
2019 continue;
2020 if (rtpctx->ssrc == AV_RB32(&buf[4])) {
2021 *rtsp_st = rt->rtsp_streams[i];
2022 return len;
2023 }
2024 if (!rtpctx->ssrc)
2025 no_ssrc = 1;
2026 }
2027 if (no_ssrc) {
2028 av_log(s, AV_LOG_WARNING,
2029 "Unable to pick stream for packet - SSRC not known for "
2030 "all streams\n");
2031 return AVERROR(EAGAIN);
2032 }
2033 } else {
2034 for (i = 0; i < rt->nb_rtsp_streams; i++) {
2035 if ((buf[1] & 0x7f) == rt->rtsp_streams[i]->sdp_payload_type) {
2036 *rtsp_st = rt->rtsp_streams[i];
2037 return len;
2038 }
2039 }
2040 }
2041 }
2042 av_log(s, AV_LOG_WARNING, "Unable to pick stream for packet\n");
2043 return AVERROR(EAGAIN);
2044}
2045
0526c6f7 2046int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
2047{
2048 RTSPState *rt = s->priv_data;
2049 int ret, len;
321259c1
MS
2050 RTSPStream *rtsp_st, *first_queue_st = NULL;
2051 int64_t wait_end = 0;
0e59034e 2052
b20359f5
JA
2053 if (rt->nb_byes == rt->nb_rtsp_streams)
2054 return AVERROR_EOF;
2055
0e59034e
RB
2056 /* get next frames from the same RTP packet */
2057 if (rt->cur_transport_priv) {
c8965800 2058 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 2059 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1243c722 2060 } else if (rt->transport == RTSP_TRANSPORT_RTP) {
bfc6db44 2061 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
604c9b11 2062 } else if (CONFIG_RTPDEC && rt->ts) {
1243c722
MS
2063 ret = ff_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf + rt->recvbuf_pos, rt->recvbuf_len - rt->recvbuf_pos);
2064 if (ret >= 0) {
2065 rt->recvbuf_pos += ret;
2066 ret = rt->recvbuf_pos < rt->recvbuf_len;
2067 }
2f41eaa9
MS
2068 } else
2069 ret = -1;
0e59034e
RB
2070 if (ret == 0) {
2071 rt->cur_transport_priv = NULL;
2072 return 0;
2073 } else if (ret == 1) {
2074 return 0;
c8965800 2075 } else
0e59034e 2076 rt->cur_transport_priv = NULL;
0e59034e
RB
2077 }
2078
8729698d 2079redo:
321259c1
MS
2080 if (rt->transport == RTSP_TRANSPORT_RTP) {
2081 int i;
2082 int64_t first_queue_time = 0;
2083 for (i = 0; i < rt->nb_rtsp_streams; i++) {
2084 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
2085 int64_t queue_time;
2086 if (!rtpctx)
2087 continue;
2088 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
2089 if (queue_time && (queue_time - first_queue_time < 0 ||
2090 !first_queue_time)) {
2091 first_queue_time = queue_time;
2092 first_queue_st = rt->rtsp_streams[i];
2093 }
2094 }
8729698d 2095 if (first_queue_time) {
321259c1 2096 wait_end = first_queue_time + s->max_delay;
8729698d
MS
2097 } else {
2098 wait_end = 0;
2099 first_queue_st = NULL;
2100 }
321259c1
MS
2101 }
2102
0e59034e 2103 /* read next RTP packet */
96a7c975
MS
2104 if (!rt->recvbuf) {
2105 rt->recvbuf = av_malloc(RECVBUF_SIZE);
2106 if (!rt->recvbuf)
2107 return AVERROR(ENOMEM);
2108 }
2109
0e59034e
RB
2110 switch(rt->lower_transport) {
2111 default:
5fe8021a 2112#if CONFIG_RTSP_DEMUXER
0e59034e 2113 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 2114 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 2115 break;
5fe8021a 2116#endif
0e59034e
RB
2117 case RTSP_LOWER_TRANSPORT_UDP:
2118 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 2119 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 2120 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
e96406ed
MS
2121 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, rtsp_st->rtp_handle, NULL, len);
2122 break;
2123 case RTSP_LOWER_TRANSPORT_CUSTOM:
f811cd2d 2124 if (first_queue_st && rt->transport == RTSP_TRANSPORT_RTP &&
6df9d9b5 2125 wait_end && wait_end < av_gettime_relative())
f811cd2d
MS
2126 len = AVERROR(EAGAIN);
2127 else
2128 len = ffio_read_partial(s->pb, rt->recvbuf, RECVBUF_SIZE);
e96406ed
MS
2129 len = pick_stream(s, &rtsp_st, rt->recvbuf, len);
2130 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
2131 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, NULL, s->pb, len);
0e59034e
RB
2132 break;
2133 }
321259c1
MS
2134 if (len == AVERROR(EAGAIN) && first_queue_st &&
2135 rt->transport == RTSP_TRANSPORT_RTP) {
1ec611a1
EB
2136 av_log(s, AV_LOG_WARNING,
2137 "max delay reached. need to consume packet\n");
321259c1 2138 rtsp_st = first_queue_st;
bfc6db44 2139 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
2140 goto end;
2141 }
0e59034e
RB
2142 if (len < 0)
2143 return len;
2144 if (len == 0)
2145 return AVERROR_EOF;
c8965800 2146 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 2147 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
df8cf076 2148 } else if (rt->transport == RTSP_TRANSPORT_RTP) {
bfc6db44 2149 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
86d9181c
MS
2150 if (rtsp_st->feedback) {
2151 AVIOContext *pb = NULL;
2152 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_CUSTOM)
2153 pb = s->pb;
2154 ff_rtp_send_rtcp_feedback(rtsp_st->transport_priv, rtsp_st->rtp_handle, pb);
2155 }
2cab6b48
MS
2156 if (ret < 0) {
2157 /* Either bad packet, or a RTCP packet. Check if the
2158 * first_rtcp_ntp_time field was initialized. */
2159 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
2160 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
2161 /* first_rtcp_ntp_time has been initialized for this stream,
2162 * copy the same value to all other uninitialized streams,
2163 * in order to map their timestamp origin to the same ntp time
2164 * as this one. */
2165 int i;
3a1cdcc7
MS
2166 AVStream *st = NULL;
2167 if (rtsp_st->stream_index >= 0)
2168 st = s->streams[rtsp_st->stream_index];
2cab6b48 2169 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 2170 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
2171 AVStream *st2 = NULL;
2172 if (rt->rtsp_streams[i]->stream_index >= 0)
2173 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
2174 if (rtpctx2 && st && st2 &&
2175 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 2176 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
2177 rtpctx2->rtcp_ts_offset = av_rescale_q(
2178 rtpctx->rtcp_ts_offset, st->time_base,
2179 st2->time_base);
2180 }
2cab6b48
MS
2181 }
2182 }
b20359f5
JA
2183 if (ret == -RTCP_BYE) {
2184 rt->nb_byes++;
2185
2186 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
2187 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
2188
2189 if (rt->nb_byes == rt->nb_rtsp_streams)
2190 return AVERROR_EOF;
2191 }
2cab6b48 2192 }
604c9b11 2193 } else if (CONFIG_RTPDEC && rt->ts) {
1243c722
MS
2194 ret = ff_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf, len);
2195 if (ret >= 0) {
2196 if (ret < len) {
2197 rt->recvbuf_len = len;
2198 rt->recvbuf_pos = ret;
2199 rt->cur_transport_priv = rt->ts;
2200 return 1;
2201 } else {
2202 ret = 0;
2203 }
2204 }
df8cf076
MS
2205 } else {
2206 return AVERROR_INVALIDDATA;
2cab6b48 2207 }
321259c1 2208end:
0e59034e
RB
2209 if (ret < 0)
2210 goto redo;
c8965800 2211 if (ret == 1)
0e59034e
RB
2212 /* more packets may follow, so we save the RTP context */
2213 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
2214
2215 return ret;
2216}
44b70ce5 2217#endif /* CONFIG_RTPDEC */
0e59034e 2218
44b70ce5 2219#if CONFIG_SDP_DEMUXER
cb1fdc61 2220static int sdp_probe(AVProbeData *p1)
93ced3e8 2221{
0e1ceacd 2222 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 2223
3fbd12d1 2224 /* we look for a line beginning "c=IN IP" */
0e1ceacd 2225 while (p < p_end && *p != '\0') {
3fbd12d1
MS
2226 if (p + sizeof("c=IN IP") - 1 < p_end &&
2227 av_strstart(p, "c=IN IP", NULL))
e0f8be64 2228 return AVPROBE_SCORE_EXTENSION;
0e1ceacd 2229
c8965800 2230 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 2231 if (++p >= p_end)
cb1fdc61 2232 break;
cb1fdc61
FB
2233 if (*p == '\r')
2234 p++;
2235 }
93ced3e8
FB
2236 return 0;
2237}
2238
1f57d601
ET
2239static void append_source_addrs(char *buf, int size, const char *name,
2240 int count, struct RTSPSource **addrs)
2241{
2242 int i;
2243 if (!count)
2244 return;
2245 av_strlcatf(buf, size, "&%s=%s", name, addrs[0]->addr);
2246 for (i = 1; i < count; i++)
2247 av_strlcatf(buf, size, ",%s", addrs[i]->addr);
2248}
2249
6e9651d1 2250static int sdp_read_header(AVFormatContext *s)
93ced3e8 2251{
8b1ab7bf 2252 RTSPState *rt = s->priv_data;
93ced3e8
FB
2253 RTSPStream *rtsp_st;
2254 int size, i, err;
2255 char *content;
2256 char url[1024];
2257
57b5555c
MS
2258 if (!ff_network_init())
2259 return AVERROR(EIO);
2260
8c0ceafb 2261 if (!rt->protocols) {
ec4c4839
AK
2262 rt->protocols = ffurl_get_protocols(s->protocol_whitelist,
2263 s->protocol_blacklist);
8c0ceafb
AK
2264 if (!rt->protocols)
2265 return AVERROR(ENOMEM);
2266 }
2267
4fa57d52 2268 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 2269 s->max_delay = DEFAULT_REORDERING_DELAY;
e96406ed
MS
2270 if (rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)
2271 rt->lower_transport = RTSP_LOWER_TRANSPORT_CUSTOM;
4fa57d52 2272
93ced3e8
FB
2273 /* read the whole sdp file */
2274 /* XXX: better loading */
2275 content = av_malloc(SDP_MAX_SIZE);
0b72a47f
HS
2276 if (!content)
2277 return AVERROR(ENOMEM);
b7effd4e 2278 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
2279 if (size <= 0) {
2280 av_free(content);
2281 return AVERROR_INVALIDDATA;
2282 }
2283 content[size] ='\0';
2284
f81c7ac7 2285 err = ff_sdp_parse(s, content);
93ced3e8 2286 av_free(content);
f81c7ac7 2287 if (err) goto fail;
93ced3e8
FB
2288
2289 /* open each RTP stream */
c8965800 2290 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 2291 char namebuf[50];
8b1ab7bf 2292 rtsp_st = rt->rtsp_streams[i];
115329f1 2293
e96406ed 2294 if (!(rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)) {
e3ec6fe7
LB
2295 AVDictionary *opts = map_to_opts(rt);
2296
98063bcf
LB
2297 err = getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip,
2298 sizeof(rtsp_st->sdp_ip),
2299 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
2300 if (err) {
2301 av_log(s, AV_LOG_ERROR, "getnameinfo: %s\n", gai_strerror(err));
2302 err = AVERROR(EIO);
d5f5c90b 2303 av_dict_free(&opts);
98063bcf
LB
2304 goto fail;
2305 }
e96406ed
MS
2306 ff_url_join(url, sizeof(url), "rtp", NULL,
2307 namebuf, rtsp_st->sdp_port,
b56fc18b
MS
2308 "?localport=%d&ttl=%d&connect=%d&write_to_source=%d",
2309 rtsp_st->sdp_port, rtsp_st->sdp_ttl,
2310 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0,
2311 rt->rtsp_flags & RTSP_FLAG_RTCP_TO_SOURCE ? 1 : 0);
1f57d601
ET
2312
2313 append_source_addrs(url, sizeof(url), "sources",
2314 rtsp_st->nb_include_source_addrs,
2315 rtsp_st->include_source_addrs);
2316 append_source_addrs(url, sizeof(url), "block",
2317 rtsp_st->nb_exclude_source_addrs,
2318 rtsp_st->exclude_source_addrs);
e3ec6fe7 2319 err = ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
fab8156b 2320 &s->interrupt_callback, &opts, rt->protocols, NULL);
e3ec6fe7
LB
2321
2322 av_dict_free(&opts);
2323
2324 if (err < 0) {
e96406ed
MS
2325 err = AVERROR_INVALIDDATA;
2326 goto fail;
2327 }
93ced3e8 2328 }
6e71c120 2329 if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 2330 goto fail;
93ced3e8
FB
2331 }
2332 return 0;
c8965800 2333fail:
3307e6ea 2334 ff_rtsp_close_streams(s);
57b5555c 2335 ff_network_close();
93ced3e8
FB
2336 return err;
2337}
2338
93ced3e8
FB
2339static int sdp_read_close(AVFormatContext *s)
2340{
3307e6ea 2341 ff_rtsp_close_streams(s);
57b5555c 2342 ff_network_close();
93ced3e8
FB
2343 return 0;
2344}
2345
51369f28
MS
2346static const AVClass sdp_demuxer_class = {
2347 .class_name = "SDP demuxer",
2348 .item_name = av_default_item_name,
2349 .option = sdp_options,
2350 .version = LIBAVUTIL_VERSION_INT,
2351};
2352
c6610a21 2353AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
2354 .name = "sdp",
2355 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
2356 .priv_data_size = sizeof(RTSPState),
2357 .read_probe = sdp_probe,
2358 .read_header = sdp_read_header,
2359 .read_packet = ff_rtsp_fetch_packet,
2360 .read_close = sdp_read_close,
17934c18 2361 .priv_class = &sdp_demuxer_class,
93ced3e8 2362};
44b70ce5 2363#endif /* CONFIG_SDP_DEMUXER */
44594cc7 2364
44b70ce5 2365#if CONFIG_RTP_DEMUXER
44594cc7
MS
2366static int rtp_probe(AVProbeData *p)
2367{
2368 if (av_strstart(p->filename, "rtp:", NULL))
2369 return AVPROBE_SCORE_MAX;
2370 return 0;
2371}
2372
6e9651d1 2373static int rtp_read_header(AVFormatContext *s)
44594cc7 2374{
350ad50b 2375 uint8_t recvbuf[RTP_MAX_PACKET_LENGTH];
44594cc7
MS
2376 char host[500], sdp[500];
2377 int ret, port;
2378 URLContext* in = NULL;
2379 int payload_type;
9200514a 2380 AVCodecParameters *par = NULL;
44594cc7 2381 struct sockaddr_storage addr;
ae628ec1 2382 AVIOContext pb;
44594cc7 2383 socklen_t addrlen = sizeof(addr);
30266038 2384 RTSPState *rt = s->priv_data;
44594cc7
MS
2385
2386 if (!ff_network_init())
2387 return AVERROR(EIO);
2388
8c0ceafb 2389 if (!rt->protocols) {
ec4c4839
AK
2390 rt->protocols = ffurl_get_protocols(s->protocol_whitelist,
2391 s->protocol_blacklist);
8c0ceafb
AK
2392 if (!rt->protocols)
2393 return AVERROR(ENOMEM);
2394 }
2395
6f1b7b39 2396 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ,
fab8156b 2397 &s->interrupt_callback, NULL, rt->protocols, NULL);
44594cc7
MS
2398 if (ret)
2399 goto fail;
2400
2401 while (1) {
bc371aca 2402 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
44594cc7
MS
2403 if (ret == AVERROR(EAGAIN))
2404 continue;
2405 if (ret < 0)
2406 goto fail;
2407 if (ret < 12) {
2408 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
2409 continue;
2410 }
2411
2412 if ((recvbuf[0] & 0xc0) != 0x80) {
2413 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
2414 "received\n");
2415 continue;
2416 }
2417
298a587f 2418 if (RTP_PT_IS_RTCP(recvbuf[1]))
f3a094f2
MS
2419 continue;
2420
44594cc7
MS
2421 payload_type = recvbuf[1] & 0x7f;
2422 break;
2423 }
1869ea03 2424 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 2425 ffurl_close(in);
44594cc7
MS
2426 in = NULL;
2427
9200514a
AK
2428 par = avcodec_parameters_alloc();
2429 if (!par) {
2430 ret = AVERROR(ENOMEM);
2431 goto fail;
2432 }
2433
2434 if (ff_rtp_get_codec_info(par, payload_type)) {
44594cc7
MS
2435 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
2436 "without an SDP file describing it\n",
2437 payload_type);
2438 goto fail;
2439 }
9200514a 2440 if (par->codec_type != AVMEDIA_TYPE_DATA) {
44594cc7
MS
2441 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
2442 "properly you need an SDP file "
2443 "describing it\n");
2444 }
2445
2446 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
2447 NULL, 0, s->filename);
2448
2449 snprintf(sdp, sizeof(sdp),
2450 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
2451 addr.ss_family == AF_INET ? 4 : 6, host,
9200514a
AK
2452 par->codec_type == AVMEDIA_TYPE_DATA ? "application" :
2453 par->codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
44594cc7
MS
2454 port, payload_type);
2455 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
9200514a 2456 avcodec_parameters_free(&par);
44594cc7 2457
e731b8d8 2458 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
44594cc7
MS
2459 s->pb = &pb;
2460
2461 /* sdp_read_header initializes this again */
2462 ff_network_close();
2463
30266038
MS
2464 rt->media_type_mask = (1 << (AVMEDIA_TYPE_DATA+1)) - 1;
2465
6e9651d1 2466 ret = sdp_read_header(s);
44594cc7
MS
2467 s->pb = NULL;
2468 return ret;
2469
2470fail:
9200514a 2471 avcodec_parameters_free(&par);
44594cc7 2472 if (in)
e52a9145 2473 ffurl_close(in);
44594cc7
MS
2474 ff_network_close();
2475 return ret;
2476}
2477
51369f28
MS
2478static const AVClass rtp_demuxer_class = {
2479 .class_name = "RTP demuxer",
2480 .item_name = av_default_item_name,
2481 .option = rtp_options,
2482 .version = LIBAVUTIL_VERSION_INT,
2483};
2484
c6610a21 2485AVInputFormat ff_rtp_demuxer = {
dfc2c4d9 2486 .name = "rtp",
6774247a 2487 .long_name = NULL_IF_CONFIG_SMALL("RTP input"),
dfc2c4d9
AK
2488 .priv_data_size = sizeof(RTSPState),
2489 .read_probe = rtp_probe,
2490 .read_header = rtp_read_header,
2491 .read_packet = ff_rtsp_fetch_packet,
2492 .read_close = sdp_read_close,
17934c18
MS
2493 .flags = AVFMT_NOFILE,
2494 .priv_class = &rtp_demuxer_class,
44594cc7 2495};
44b70ce5 2496#endif /* CONFIG_RTP_DEMUXER */