rtsp: free opts dictionary on failure of getnameinfo
[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{
b7a4c319 203 AVCodecContext *codec = st ? st->codec : NULL;
003eb642
MS
204 if (!handler)
205 return;
2326558d
MS
206 if (codec)
207 codec->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{
86b6e387 242 AVCodecContext *codec = st->codec;
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). */
6099543a
MS
256 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
257 }
258
36ef5369 259 if (codec->codec_id == AV_CODEC_ID_NONE) {
003eb642
MS
260 RTPDynamicProtocolHandler *handler =
261 ff_rtp_handler_find_by_name(buf, codec->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)
268 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
269 }
270
271 c = avcodec_find_decoder(codec->codec_id);
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);
279 switch (codec->codec_type) {
72415b2a 280 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
281 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
282 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
283 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
284 if (i > 0) {
285 codec->sample_rate = i;
c3f9ebf7 286 avpriv_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
287 get_word_sep(buf, sizeof(buf), "/", &p);
288 i = atoi(buf);
289 if (i > 0)
290 codec->channels = i;
d1ccf0e0 291 }
7515ed0c
RB
292 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
293 codec->sample_rate);
294 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
295 codec->channels);
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;
01f4895c 498 st->codec->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 */
bf6d9818 502 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
503 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
504 st->codec->sample_rate > 0)
c3f9ebf7 505 avpriv_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
506 /* Even static payload types may need a custom depacketizer */
507 handler = ff_rtp_handler_find_by_id(
508 rtsp_st->sdp_payload_type, st->codec->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 }
c8965800 568 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
569 int64_t start, end;
570
571 // this is so that seeking on a streamed file can work.
572 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
573 s->start_time = start;
574 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
575 s->duration = (end == AV_NOPTS_VALUE) ?
576 AV_NOPTS_VALUE : end - start;
4438d1c6
GC
577 } else if (av_strstart(p, "lang:", &p)) {
578 if (s->nb_streams > 0) {
579 get_word(buf1, sizeof(buf1), &p);
580 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
581 if (rtsp_st->stream_index >= 0) {
582 st = s->streams[rtsp_st->stream_index];
583 av_dict_set(&st->metadata, "language", buf1, 0);
584 }
585 } else
586 get_word(rt->default_lang, sizeof(rt->default_lang), &p);
119b4668
RB
587 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
588 if (atoi(p) == 1)
589 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
590 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
591 s->nb_streams > 0) {
592 st = s->streams[s->nb_streams - 1];
593 st->codec->sample_rate = atoi(p);
424da308
MS
594 } else if (av_strstart(p, "crypto:", &p) && s->nb_streams > 0) {
595 // RFC 4568
596 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
597 get_word(buf1, sizeof(buf1), &p); // ignore tag
598 get_word(rtsp_st->crypto_suite, sizeof(rtsp_st->crypto_suite), &p);
599 p += strspn(p, SPACE_CHARS);
600 if (av_strstart(p, "inline:", &p))
601 get_word(rtsp_st->crypto_params, sizeof(rtsp_st->crypto_params), &p);
1f57d601
ET
602 } else if (av_strstart(p, "source-filter:", &p)) {
603 int exclude = 0;
36fb0d02 604 get_word(buf1, sizeof(buf1), &p);
1f57d601 605 if (strcmp(buf1, "incl") && strcmp(buf1, "excl"))
36fb0d02 606 return;
1f57d601 607 exclude = !strcmp(buf1, "excl");
36fb0d02
ET
608
609 get_word(buf1, sizeof(buf1), &p);
610 if (strcmp(buf1, "IN") != 0)
611 return;
612 get_word(buf1, sizeof(buf1), &p);
1f57d601 613 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6") && strcmp(buf1, "*"))
36fb0d02 614 return;
1f57d601 615 // not checking that the destination address actually matches or is wildcard
36fb0d02
ET
616 get_word(buf1, sizeof(buf1), &p);
617
1f57d601
ET
618 while (*p != '\0') {
619 rtsp_src = av_mallocz(sizeof(*rtsp_src));
620 if (!rtsp_src)
621 return;
622 get_word(rtsp_src->addr, sizeof(rtsp_src->addr), &p);
623 if (exclude) {
624 if (s->nb_streams == 0) {
625 dynarray_add(&s1->default_exclude_source_addrs, &s1->nb_default_exclude_source_addrs, rtsp_src);
626 } else {
627 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
628 dynarray_add(&rtsp_st->exclude_source_addrs, &rtsp_st->nb_exclude_source_addrs, rtsp_src);
629 }
630 } else {
631 if (s->nb_streams == 0) {
632 dynarray_add(&s1->default_include_source_addrs, &s1->nb_default_include_source_addrs, rtsp_src);
633 } else {
634 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
635 dynarray_add(&rtsp_st->include_source_addrs, &rtsp_st->nb_include_source_addrs, rtsp_src);
636 }
637 }
638 }
1a30d541
RB
639 } else {
640 if (rt->server_type == RTSP_SERVER_WMS)
641 ff_wms_parse_sdp_a_line(s, p);
642 if (s->nb_streams > 0) {
45600148
MS
643 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
644
c4a3d032 645 if (rt->server_type == RTSP_SERVER_REAL)
45600148 646 ff_real_parse_sdp_a_line(s, rtsp_st->stream_index, p);
c4a3d032 647
c4a3d032
RB
648 if (rtsp_st->dynamic_handler &&
649 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800 650 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
45600148 651 rtsp_st->stream_index,
c4a3d032 652 rtsp_st->dynamic_protocol_context, buf);
1a30d541 653 }
1617ad97
FB
654 }
655 break;
656 }
657}
658
0526c6f7 659int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 660{
a8475bbd 661 RTSPState *rt = s->priv_data;
1617ad97 662 const char *p;
1f57d601 663 int letter, i;
9211bcdd
RB
664 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
665 * contain long SDP lines containing complete ASF Headers (several
666 * kB) or arrays of MDPR (RM stream descriptor) headers plus
667 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
668 * buffer is large.
669 *
afcea58c
JA
670 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
671 * in rtpdec_xiph.c. */
373afbaf 672 char buf[16384], *q;
a92be9b8 673 SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state;
115329f1 674
1617ad97 675 p = content;
c8965800 676 for (;;) {
30619e6e 677 p += strspn(p, SPACE_CHARS);
1617ad97
FB
678 letter = *p;
679 if (letter == '\0')
680 break;
681 p++;
682 if (*p != '=')
683 goto next_line;
684 p++;
685 /* get the content */
686 q = buf;
b6892136 687 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
688 if ((q - buf) < sizeof(buf) - 1)
689 *q++ = *p;
690 p++;
691 }
692 *q = '\0';
93ced3e8 693 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
694 next_line:
695 while (*p != '\n' && *p != '\0')
696 p++;
697 if (*p == '\n')
698 p++;
699 }
1f57d601
ET
700
701 for (i = 0; i < s1->nb_default_include_source_addrs; i++)
702 av_free(s1->default_include_source_addrs[i]);
703 av_freep(&s1->default_include_source_addrs);
704 for (i = 0; i < s1->nb_default_exclude_source_addrs; i++)
705 av_free(s1->default_exclude_source_addrs[i]);
706 av_freep(&s1->default_exclude_source_addrs);
707
a8475bbd
LB
708 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
709 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
710 return 0;
711}
44b70ce5 712#endif /* CONFIG_RTPDEC */
1617ad97 713
50aef03b 714void ff_rtsp_undo_setup(AVFormatContext *s, int send_packets)
93e7490e
MS
715{
716 RTSPState *rt = s->priv_data;
717 int i;
718
719 for (i = 0; i < rt->nb_rtsp_streams; i++) {
720 RTSPStream *rtsp_st = rt->rtsp_streams[i];
721 if (!rtsp_st)
722 continue;
723 if (rtsp_st->transport_priv) {
724 if (s->oformat) {
725 AVFormatContext *rtpctx = rtsp_st->transport_priv;
726 av_write_trailer(rtpctx);
727 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
50aef03b
MS
728 if (CONFIG_RTSP_MUXER && rtpctx->pb && send_packets)
729 ff_rtsp_tcp_write_packet(s, rtsp_st);
8e32b1f0 730 ffio_free_dyn_buf(&rtpctx->pb);
93e7490e 731 } else {
22a3212e 732 avio_close(rtpctx->pb);
93e7490e 733 }
b22dbb29 734 avformat_free_context(rtpctx);
604c9b11 735 } else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RDT)
93e7490e 736 ff_rdt_parse_close(rtsp_st->transport_priv);
604c9b11 737 else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RTP)
bfc6db44 738 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
739 }
740 rtsp_st->transport_priv = NULL;
741 if (rtsp_st->rtp_handle)
e52a9145 742 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
743 rtsp_st->rtp_handle = NULL;
744 }
745}
746
1ced9da3 747/* close and free RTSP streams */
3307e6ea 748void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 749{
52aa4338 750 RTSPState *rt = s->priv_data;
1f57d601 751 int i, j;
1ced9da3
LA
752 RTSPStream *rtsp_st;
753
50aef03b 754 ff_rtsp_undo_setup(s, 0);
c8965800 755 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
756 rtsp_st = rt->rtsp_streams[i];
757 if (rtsp_st) {
e72605f8 758 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context) {
d594dbec
MS
759 if (rtsp_st->dynamic_handler->close)
760 rtsp_st->dynamic_handler->close(
e72605f8 761 rtsp_st->dynamic_protocol_context);
bb4a310b 762 av_free(rtsp_st->dynamic_protocol_context);
e72605f8 763 }
1f57d601
ET
764 for (j = 0; j < rtsp_st->nb_include_source_addrs; j++)
765 av_free(rtsp_st->include_source_addrs[j]);
766 av_freep(&rtsp_st->include_source_addrs);
767 for (j = 0; j < rtsp_st->nb_exclude_source_addrs; j++)
768 av_free(rtsp_st->exclude_source_addrs[j]);
769 av_freep(&rtsp_st->exclude_source_addrs);
770
ea7f0807 771 av_free(rtsp_st);
1ced9da3
LA
772 }
773 }
774 av_free(rt->rtsp_streams);
775 if (rt->asf_ctx) {
cd3716b9 776 avformat_close_input(&rt->asf_ctx);
1ced9da3 777 }
604c9b11 778 if (CONFIG_RTPDEC && rt->ts)
1243c722 779 ff_mpegts_parse_close(rt->ts);
a8475bbd 780 av_free(rt->p);
96a7c975 781 av_free(rt->recvbuf);
1ced9da3
LA
782}
783
6e71c120 784int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
785{
786 RTSPState *rt = s->priv_data;
787 AVStream *st = NULL;
3f055f8f
MS
788 int reordering_queue_size = rt->reordering_queue_size;
789 if (reordering_queue_size < 0) {
790 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
791 reordering_queue_size = 0;
792 else
793 reordering_queue_size = RTP_REORDER_QUEUE_DEFAULT_SIZE;
794 }
1ced9da3
LA
795
796 /* open the RTP context */
797 if (rtsp_st->stream_index >= 0)
798 st = s->streams[rtsp_st->stream_index];
799 if (!st)
800 s->ctx_flags |= AVFMTCTX_NOHEADER;
801
604c9b11 802 if (CONFIG_RTSP_MUXER && s->oformat) {
46c0cbd5
VG
803 int ret = ff_rtp_chain_mux_open((AVFormatContext **)&rtsp_st->transport_priv,
804 s, st, rtsp_st->rtp_handle,
8034130e
LB
805 RTSP_TCP_MAX_PACKET_SIZE,
806 rtsp_st->stream_index);
c2bfd816 807 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 808 rtsp_st->rtp_handle = NULL;
68c81308
MS
809 if (ret < 0)
810 return ret;
f797b134 811 st->time_base = ((AVFormatContext*)rtsp_st->transport_priv)->streams[0]->time_base;
df8cf076
MS
812 } else if (rt->transport == RTSP_TRANSPORT_RAW) {
813 return 0; // Don't need to open any parser here
604c9b11 814 } else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
815 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
816 rtsp_st->dynamic_protocol_context,
817 rtsp_st->dynamic_handler);
44b70ce5 818 else if (CONFIG_RTPDEC)
3f95f0dd 819 rtsp_st->transport_priv = ff_rtp_parse_open(s, st,
58ee0991 820 rtsp_st->sdp_payload_type,
3f055f8f 821 reordering_queue_size);
1ced9da3
LA
822
823 if (!rtsp_st->transport_priv) {
824 return AVERROR(ENOMEM);
604c9b11 825 } else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RTP) {
c8965800 826 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
827 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
828 rtsp_st->dynamic_protocol_context,
829 rtsp_st->dynamic_handler);
1ced9da3 830 }
424da308
MS
831 if (rtsp_st->crypto_suite[0])
832 ff_rtp_parse_set_crypto(rtsp_st->transport_priv,
833 rtsp_st->crypto_suite,
834 rtsp_st->crypto_params);
1ced9da3
LA
835 }
836
837 return 0;
838}
839
6f5a3d0a 840#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
841static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
842{
ddce7dab
MR
843 const char *q;
844 char *p;
1617ad97
FB
845 int v;
846
ddce7dab
MR
847 q = *pp;
848 q += strspn(q, SPACE_CHARS);
849 v = strtol(q, &p, 10);
1617ad97
FB
850 if (*p == '-') {
851 p++;
852 *min_ptr = v;
ddce7dab 853 v = strtol(p, &p, 10);
1617ad97
FB
854 *max_ptr = v;
855 } else {
856 *min_ptr = v;
857 *max_ptr = v;
858 }
859 *pp = p;
860}
861
862/* XXX: only one transport specification is parsed */
2c17fb61
LB
863static void rtsp_parse_transport(AVFormatContext *s,
864 RTSPMessageHeader *reply, const char *p)
1617ad97
FB
865{
866 char transport_protocol[16];
867 char profile[16];
868 char lower_transport[16];
869 char parameter[16];
870 RTSPTransportField *th;
871 char buf[256];
115329f1 872
1617ad97 873 reply->nb_transports = 0;
115329f1 874
c8965800 875 for (;;) {
30619e6e 876 p += strspn(p, SPACE_CHARS);
1617ad97
FB
877 if (*p == '\0')
878 break;
879
880 th = &reply->transports[reply->nb_transports];
881
115329f1 882 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 883 "/", &p);
bb3244de 884 if (!av_strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
885 get_word_sep(profile, sizeof(profile), "/;,", &p);
886 lower_transport[0] = '\0';
887 /* rtp/avp/<protocol> */
888 if (*p == '/') {
7ecc634e
LB
889 get_word_sep(lower_transport, sizeof(lower_transport),
890 ";,", &p);
119b4668
RB
891 }
892 th->transport = RTSP_TRANSPORT_RTP;
bb3244de
RD
893 } else if (!av_strcasecmp (transport_protocol, "x-pn-tng") ||
894 !av_strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 895 /* x-pn-tng/<protocol> */
e1502118
LB
896 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
897 profile[0] = '\0';
119b4668 898 th->transport = RTSP_TRANSPORT_RDT;
df8cf076
MS
899 } else if (!av_strcasecmp(transport_protocol, "raw")) {
900 get_word_sep(profile, sizeof(profile), "/;,", &p);
901 lower_transport[0] = '\0';
902 /* raw/raw/<protocol> */
903 if (*p == '/') {
904 get_word_sep(lower_transport, sizeof(lower_transport),
905 ";,", &p);
906 }
907 th->transport = RTSP_TRANSPORT_RAW;
1617ad97 908 }
bb3244de 909 if (!av_strcasecmp(lower_transport, "TCP"))
90abbdba 910 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 911 else
90abbdba 912 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 913
1617ad97
FB
914 if (*p == ';')
915 p++;
916 /* get each parameter */
917 while (*p != '\0' && *p != ',') {
918 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
919 if (!strcmp(parameter, "port")) {
920 if (*p == '=') {
921 p++;
922 rtsp_parse_range(&th->port_min, &th->port_max, &p);
923 }
924 } else if (!strcmp(parameter, "client_port")) {
925 if (*p == '=') {
926 p++;
115329f1 927 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
928 &th->client_port_max, &p);
929 }
930 } else if (!strcmp(parameter, "server_port")) {
931 if (*p == '=') {
932 p++;
115329f1 933 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
934 &th->server_port_max, &p);
935 }
936 } else if (!strcmp(parameter, "interleaved")) {
937 if (*p == '=') {
938 p++;
115329f1 939 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
940 &th->interleaved_max, &p);
941 }
942 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
943 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
944 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
945 } else if (!strcmp(parameter, "ttl")) {
946 if (*p == '=') {
f21d5c90 947 char *end;
1617ad97 948 p++;
f21d5c90
MS
949 th->ttl = strtol(p, &end, 10);
950 p = end;
1617ad97
FB
951 }
952 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
953 if (*p == '=') {
954 p++;
955 get_word_sep(buf, sizeof(buf), ";,", &p);
2c17fb61 956 get_sockaddr(s, buf, &th->destination);
1617ad97 957 }
619298a8
JW
958 } else if (!strcmp(parameter, "source")) {
959 if (*p == '=') {
960 p++;
961 get_word_sep(buf, sizeof(buf), ";,", &p);
962 av_strlcpy(th->source, buf, sizeof(th->source));
963 }
45b06858
JO
964 } else if (!strcmp(parameter, "mode")) {
965 if (*p == '=') {
966 p++;
967 get_word_sep(buf, sizeof(buf), ";, ", &p);
968 if (!strcmp(buf, "record") ||
969 !strcmp(buf, "receive"))
970 th->mode_record = 1;
971 }
1617ad97 972 }
619298a8 973
1617ad97
FB
974 while (*p != ';' && *p != '\0' && *p != ',')
975 p++;
976 if (*p == ';')
977 p++;
978 }
979 if (*p == ',')
980 p++;
981
982 reply->nb_transports++;
b90adb0a
MS
983 if (reply->nb_transports >= RTSP_MAX_TRANSPORTS)
984 break;
1617ad97
FB
985 }
986}
987
29db7c3a
MS
988static void handle_rtp_info(RTSPState *rt, const char *url,
989 uint32_t seq, uint32_t rtptime)
990{
991 int i;
992 if (!rtptime || !url[0])
993 return;
994 if (rt->transport != RTSP_TRANSPORT_RTP)
995 return;
996 for (i = 0; i < rt->nb_rtsp_streams; i++) {
997 RTSPStream *rtsp_st = rt->rtsp_streams[i];
998 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
999 if (!rtpctx)
1000 continue;
1001 if (!strcmp(rtsp_st->control_url, url)) {
1002 rtpctx->base_timestamp = rtptime;
1003 break;
1004 }
1005 }
1006}
1007
1008static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
1009{
1010 int read = 0;
1011 char key[20], value[1024], url[1024] = "";
1012 uint32_t seq = 0, rtptime = 0;
1013
1014 for (;;) {
1015 p += strspn(p, SPACE_CHARS);
1016 if (!*p)
1017 break;
1018 get_word_sep(key, sizeof(key), "=", &p);
1019 if (*p != '=')
1020 break;
1021 p++;
1022 get_word_sep(value, sizeof(value), ";, ", &p);
1023 read++;
1024 if (!strcmp(key, "url"))
1025 av_strlcpy(url, value, sizeof(url));
1026 else if (!strcmp(key, "seq"))
4515f9b5 1027 seq = strtoul(value, NULL, 10);
29db7c3a 1028 else if (!strcmp(key, "rtptime"))
4515f9b5 1029 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
1030 if (*p == ',') {
1031 handle_rtp_info(rt, url, seq, rtptime);
1032 url[0] = '\0';
1033 seq = rtptime = 0;
1034 read = 0;
1035 }
1036 if (*p)
1037 p++;
1038 }
1039 if (read > 0)
1040 handle_rtp_info(rt, url, seq, rtptime);
1041}
1042
2c17fb61
LB
1043void ff_rtsp_parse_line(AVFormatContext *s,
1044 RTSPMessageHeader *reply, const char *buf,
77223c53 1045 RTSPState *rt, const char *method)
1617ad97
FB
1046{
1047 const char *p;
1048
1049 /* NOTE: we do case independent match for broken servers */
1050 p = buf;
f7d78f36 1051 if (av_stristart(p, "Session:", &p)) {
30e79845 1052 int t;
1617ad97 1053 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
1054 if (av_stristart(p, ";timeout=", &p) &&
1055 (t = strtol(p, NULL, 10)) > 0) {
1056 reply->timeout = t;
1057 }
f7d78f36 1058 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 1059 reply->content_length = strtol(p, NULL, 10);
f7d78f36 1060 } else if (av_stristart(p, "Transport:", &p)) {
2c17fb61 1061 rtsp_parse_transport(s, reply, p);
f7d78f36 1062 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 1063 reply->seq = strtol(p, NULL, 10);
f7d78f36 1064 } else if (av_stristart(p, "Range:", &p)) {
31693e00 1065 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 1066 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 1067 p += strspn(p, SPACE_CHARS);
30aa6aed 1068 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 1069 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 1070 p += strspn(p, SPACE_CHARS);
7a86bafa 1071 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
1072 } else if (av_stristart(p, "Notice:", &p) ||
1073 av_stristart(p, "X-Notice:", &p)) {
1074 reply->notice = strtol(p, NULL, 10);
d243ba30 1075 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 1076 p += strspn(p, SPACE_CHARS);
d243ba30 1077 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 1078 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 1079 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
1080 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
1081 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 1082 p += strspn(p, SPACE_CHARS);
acc9ed14 1083 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 1084 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 1085 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
1086 if (method && !strcmp(method, "DESCRIBE"))
1087 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
1088 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
1089 p += strspn(p, SPACE_CHARS);
1090 if (method && !strcmp(method, "PLAY"))
1091 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
1092 } else if (av_stristart(p, "Public:", &p) && rt) {
1093 if (strstr(p, "GET_PARAMETER") &&
1094 method && !strcmp(method, "OPTIONS"))
1095 rt->get_parameter_supported = 1;
30eae325
MS
1096 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
1097 p += strspn(p, SPACE_CHARS);
1098 rt->accept_dynamic_rate = atoi(p);
fcd0298c
JO
1099 } else if (av_stristart(p, "Content-Type:", &p)) {
1100 p += strspn(p, SPACE_CHARS);
1101 av_strlcpy(reply->content_type, p, sizeof(reply->content_type));
1617ad97
FB
1102 }
1103}
1104
b7b8fc34 1105/* skip a RTP/TCP interleaved packet */
ec55edba 1106void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
1107{
1108 RTSPState *rt = s->priv_data;
1109 int ret, len, len1;
1110 uint8_t buf[1024];
1111
dce37564 1112 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
1113 if (ret != 3)
1114 return;
80fb8234 1115 len = AV_RB16(buf + 1);
67c9cd69 1116
1a3eb042 1117 av_log(s, AV_LOG_TRACE, "skipping RTP packet len=%d\n", len);
67c9cd69 1118
b7b8fc34
FB
1119 /* skip payload */
1120 while (len > 0) {
1121 len1 = len;
1122 if (len1 > sizeof(buf))
1123 len1 = sizeof(buf);
dce37564 1124 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
1125 if (ret != len1)
1126 return;
1127 len -= len1;
1128 }
1129}
1617ad97 1130
3307e6ea 1131int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 1132 unsigned char **content_ptr,
3df54c6b 1133 int return_on_interleaved_data, const char *method)
1617ad97
FB
1134{
1135 RTSPState *rt = s->priv_data;
1136 char buf[4096], buf1[1024], *q;
1137 unsigned char ch;
1138 const char *p;
1a6b9a98 1139 int ret, content_length, line_count = 0, request = 0;
1617ad97
FB
1140 unsigned char *content = NULL;
1141
1a6b9a98
TW
1142start:
1143 line_count = 0;
1144 request = 0;
1145 content = NULL;
d541a7d2 1146 memset(reply, 0, sizeof(*reply));
1617ad97 1147
1617ad97 1148 /* parse reply (XXX: use buffers) */
1617ad97 1149 rt->last_reply[0] = '\0';
c8965800 1150 for (;;) {
1617ad97 1151 q = buf;
c8965800 1152 for (;;) {
dce37564 1153 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
1a3eb042 1154 av_log(s, AV_LOG_TRACE, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 1155 if (ret != 1)
2401660d 1156 return AVERROR_EOF;
1617ad97
FB
1157 if (ch == '\n')
1158 break;
e02dcdf6 1159 if (ch == '$' && q == buf) {
7e726132
RB
1160 if (return_on_interleaved_data) {
1161 return 1;
1162 } else
ec55edba 1163 ff_rtsp_skip_packet(s);
b7b8fc34 1164 } else if (ch != '\r') {
1617ad97
FB
1165 if ((q - buf) < sizeof(buf) - 1)
1166 *q++ = ch;
1167 }
1168 }
1169 *q = '\0';
67c9cd69 1170
1a3eb042 1171 av_log(s, AV_LOG_TRACE, "line='%s'\n", buf);
67c9cd69 1172
1617ad97
FB
1173 /* test if last line */
1174 if (buf[0] == '\0')
1175 break;
1176 p = buf;
1177 if (line_count == 0) {
1178 /* get reply code */
1179 get_word(buf1, sizeof(buf1), &p);
1a6b9a98
TW
1180 if (!strncmp(buf1, "RTSP/", 5)) {
1181 get_word(buf1, sizeof(buf1), &p);
1182 reply->status_code = atoi(buf1);
1183 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1184 } else {
1185 av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method
1186 get_word(buf1, sizeof(buf1), &p); // object
1187 request = 1;
1188 }
1617ad97 1189 } else {
2c17fb61 1190 ff_rtsp_parse_line(s, reply, p, rt, method);
75e61b0e
MR
1191 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
1192 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
1193 }
1194 line_count++;
1195 }
115329f1 1196
1a6b9a98 1197 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0' && !request)
75e61b0e 1198 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 1199
1617ad97
FB
1200 content_length = reply->content_length;
1201 if (content_length > 0) {
1202 /* leave some room for a trailing '\0' (useful for simple parsing) */
1203 content = av_malloc(content_length + 1);
460b509a
ML
1204 if (!content)
1205 return AVERROR(ENOMEM);
dce37564 1206 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
1207 content[content_length] = '\0';
1208 }
1209 if (content_ptr)
1210 *content_ptr = content;
e2e2e7dd
AB
1211 else
1212 av_free(content);
7e726132 1213
1a6b9a98
TW
1214 if (request) {
1215 char buf[1024];
1216 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1217 const char* ptr = buf;
1218
1219 if (!strcmp(reply->reason, "OPTIONS")) {
1220 snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n");
1221 if (reply->seq)
1222 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq);
1223 if (reply->session_id[0])
1224 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n",
1225 reply->session_id);
1226 } else {
1227 snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n");
1228 }
1229 av_strlcat(buf, "\r\n", sizeof(buf));
1230
1231 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1232 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1233 ptr = base64buf;
1234 }
1235 ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr));
1236
6df9d9b5 1237 rt->last_cmd_time = av_gettime_relative();
1a6b9a98
TW
1238 /* Even if the request from the server had data, it is not the data
1239 * that the caller wants or expects. The memory could also be leaked
1240 * if the actual following reply has content data. */
1241 if (content_ptr)
1242 av_freep(content_ptr);
1243 /* If method is set, this is called from ff_rtsp_send_cmd,
1244 * where a reply to exactly this request is awaited. For
705eeb5e 1245 * callers from within packet receiving, we just want to
1a6b9a98
TW
1246 * return to the caller and go back to receiving packets. */
1247 if (method)
1248 goto start;
1249 return 0;
1250 }
1251
7ed8211b
LB
1252 if (rt->seq != reply->seq) {
1253 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
1254 rt->seq, reply->seq);
1255 }
1256
fccb1770
RB
1257 /* EOS */
1258 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
1259 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 1260 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 1261 rt->state = RTSP_STATE_IDLE;
c8965800 1262 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 1263 return AVERROR(EIO); /* data or server error */
c8965800 1264 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
1265 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
1266 return AVERROR(EPERM);
1267
7e726132 1268 return 0;
1617ad97
FB
1269}
1270
57c4d01e
DEP
1271/**
1272 * Send a command to the RTSP server without waiting for the reply.
1273 *
1274 * @param s RTSP (de)muxer context
1275 * @param method the method for the request
1276 * @param url the target url for the request
1277 * @param headers extra header lines to include in the request
1278 * @param send_content if non-null, the data to send as request body content
1279 * @param send_content_length the length of the send_content data, or 0 if
1280 * send_content is null
1281 *
1282 * @return zero if success, nonzero otherwise
1283 */
e926b5ce
DB
1284static int rtsp_send_cmd_with_content_async(AVFormatContext *s,
1285 const char *method, const char *url,
1286 const char *headers,
1287 const unsigned char *send_content,
1288 int send_content_length)
29b9f58b
RB
1289{
1290 RTSPState *rt = s->priv_data;
f5d33f52
JA
1291 char buf[4096], *out_buf;
1292 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 1293
f5d33f52
JA
1294 /* Add in RTSP headers */
1295 out_buf = buf;
29b9f58b 1296 rt->seq++;
b17d11c6
MS
1297 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1298 if (headers)
1299 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1300 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
1dd1b233 1301 av_strlcatf(buf, sizeof(buf), "User-Agent: %s\r\n", LIBAVFORMAT_IDENT);
b17d11c6
MS
1302 if (rt->session_id[0] != '\0' && (!headers ||
1303 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1304 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1305 }
aa8bf2fb
MS
1306 if (rt->auth[0]) {
1307 char *str = ff_http_auth_create_response(&rt->auth_state,
1308 rt->auth, url, method);
1309 if (str)
1310 av_strlcat(buf, str, sizeof(buf));
1311 av_free(str);
1312 }
dfd017bf
MS
1313 if (send_content_length > 0 && send_content)
1314 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1315 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1316
f5d33f52
JA
1317 /* base64 encode rtsp if tunneling */
1318 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1319 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1320 out_buf = base64buf;
1321 }
1322
1a3eb042 1323 av_log(s, AV_LOG_TRACE, "Sending:\n%s--\n", buf);
67c9cd69 1324
925e908b 1325 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
1326 if (send_content_length > 0 && send_content) {
1327 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1328 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1329 "with content data not supported\n");
1330 return AVERROR_PATCHWELCOME;
1331 }
925e908b 1332 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1333 }
6df9d9b5 1334 rt->last_cmd_time = av_gettime_relative();
d0382374
JA
1335
1336 return 0;
30e79845
RB
1337}
1338
d0382374 1339int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1340 const char *url, const char *headers)
dfd017bf 1341{
e926b5ce 1342 return rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1343}
1344
d0382374 1345int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1346 const char *headers, RTSPMessageHeader *reply,
1347 unsigned char **content_ptr)
30e79845 1348{
d0382374 1349 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1350 content_ptr, NULL, 0);
29b9f58b
RB
1351}
1352
d0382374 1353int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1354 const char *method, const char *url,
1355 const char *header,
1356 RTSPMessageHeader *reply,
1357 unsigned char **content_ptr,
1358 const unsigned char *send_content,
1359 int send_content_length)
dfd017bf 1360{
30af0779
MS
1361 RTSPState *rt = s->priv_data;
1362 HTTPAuthType cur_auth_type;
2f96cc1f 1363 int ret, attempts = 0;
30af0779
MS
1364
1365retry:
1366 cur_auth_type = rt->auth_state.auth_type;
e926b5ce
DB
1367 if ((ret = rtsp_send_cmd_with_content_async(s, method, url, header,
1368 send_content,
1369 send_content_length)))
d0382374 1370 return ret;
dfd017bf 1371
3df54c6b 1372 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1373 return ret;
2f96cc1f 1374 attempts++;
30af0779 1375
2f96cc1f
MS
1376 if (reply->status_code == 401 &&
1377 (cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) &&
1378 rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2)
30af0779 1379 goto retry;
d0382374 1380
bf55cf19 1381 if (reply->status_code > 400){
d93fdcbf 1382 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1383 method,
d93fdcbf
LB
1384 reply->status_code,
1385 reply->reason);
bf55cf19
LB
1386 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1387 }
1388
d0382374 1389 return 0;
dfd017bf
MS
1390}
1391
fef5649a 1392int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1393 int lower_transport, const char *real_challenge)
1617ad97
FB
1394{
1395 RTSPState *rt = s->priv_data;
58f09785 1396 int rtx = 0, j, i, err, interleave = 0, port_off;
1617ad97 1397 RTSPStream *rtsp_st;
a9e534d5 1398 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1399 char cmd[2048];
e9dea59f
RB
1400 const char *trans_pref;
1401
119b4668 1402 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f 1403 trans_pref = "x-pn-tng";
df8cf076
MS
1404 else if (rt->transport == RTSP_TRANSPORT_RAW)
1405 trans_pref = "RAW/RAW";
e9dea59f
RB
1406 else
1407 trans_pref = "RTP/AVP";
115329f1 1408
30e79845
RB
1409 /* default timeout: 1 minute */
1410 rt->timeout = 60;
1411
1617ad97
FB
1412 /* for each stream, make the setup request */
1413 /* XXX: we assume the same server is used for the control of each
c8965800 1414 * RTSP stream */
d1ccf0e0 1415
58f09785
DV
1416 /* Choose a random starting offset within the first half of the
1417 * port range, to allow for a number of ports to try even if the offset
1418 * happens to be at the end of the random range. */
1419 port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2);
1420 /* even random offset */
1421 port_off -= port_off & 0x01;
1422
1423 for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1424 char transport[2048];
1425
f75e3da5 1426 /*
f830c9a4
RB
1427 * WMS serves all UDP data over a single connection, the RTX, which
1428 * isn't necessarily the first in the SDP but has to be the first
1429 * to be set up, else the second/third SETUP will fail with a 461.
1430 */
1431 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1432 rt->server_type == RTSP_SERVER_WMS) {
1433 if (i == 0) {
1434 /* rtx first */
1435 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1436 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1437 if (len >= 4 &&
c8965800
RB
1438 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1439 "/rtx"))
f830c9a4
RB
1440 break;
1441 }
1442 if (rtx == rt->nb_rtsp_streams)
1443 return -1; /* no RTX found */
1444 rtsp_st = rt->rtsp_streams[rtx];
1445 } else
1446 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1447 } else
2fea9650 1448 rtsp_st = rt->rtsp_streams[i];
1617ad97 1449
1617ad97 1450 /* RTP/UDP */
90abbdba 1451 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1452 char buf[256];
85fb7b34 1453
f830c9a4
RB
1454 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1455 port = reply->transports[0].client_port_min;
1456 goto have_port;
1457 }
1458
85fb7b34 1459 /* first try in specified port range */
dbb06b8c 1460 while (j <= rt->rtp_port_max) {
e3ec6fe7
LB
1461 AVDictionary *opts = map_to_opts(rt);
1462
bc495bad
DV
1463 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1464 "?localport=%d", j);
1465 /* we will use two ports per rtp stream (rtp and rtcp) */
1466 j += 2;
e3ec6fe7
LB
1467 err = ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
1468 &s->interrupt_callback, &opts);
1469
1470 av_dict_free(&opts);
1471
1472 if (!err)
bc495bad 1473 goto rtp_opened;
1617ad97 1474 }
85fb7b34 1475
a3b058b7
MS
1476 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1477 err = AVERROR(EIO);
1478 goto fail;
85fb7b34
FB
1479
1480 rtp_opened:
bfc6db44 1481 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1482 have_port:
0ad306bc 1483 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1484 "%s/UDP;", trans_pref);
1485 if (rt->server_type != RTSP_SERVER_REAL)
1486 av_strlcat(transport, "unicast;", sizeof(transport));
1487 av_strlcatf(transport, sizeof(transport),
1488 "client_port=%d", port);
f830c9a4
RB
1489 if (rt->transport == RTSP_TRANSPORT_RTP &&
1490 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1491 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1492 }
1493
1494 /* RTP/TCP */
90abbdba 1495 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1496 /* For WMS streams, the application streams are only used for
090438cc
RB
1497 * UDP. When trying to set it up for TCP streams, the server
1498 * will return an error. Therefore, we skip those streams. */
1499 if (rt->server_type == RTSP_SERVER_WMS &&
45600148
MS
1500 (rtsp_st->stream_index < 0 ||
1501 s->streams[rtsp_st->stream_index]->codec->codec_type ==
1502 AVMEDIA_TYPE_DATA))
090438cc 1503 continue;
0ad306bc 1504 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1505 "%s/TCP;", trans_pref);
895678f8 1506 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1507 av_strlcat(transport, "unicast;", sizeof(transport));
1508 av_strlcatf(transport, sizeof(transport),
1509 "interleaved=%d-%d",
1510 interleave, interleave + 1);
1511 interleave += 2;
1617ad97
FB
1512 }
1513
90abbdba 1514 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1515 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1516 "%s/UDP;multicast", trans_pref);
1617ad97 1517 }
69adcc4f 1518 if (s->oformat) {
bbc80386 1519 av_strlcat(transport, ";mode=record", sizeof(transport));
69adcc4f 1520 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1521 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1522 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1523 snprintf(cmd, sizeof(cmd),
b6892136 1524 "Transport: %s\r\n",
b17d11c6 1525 transport);
76b0d03d
MS
1526 if (rt->accept_dynamic_rate)
1527 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
604c9b11 1528 if (CONFIG_RTPDEC && i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1529 char real_res[41], real_csum[9];
1530 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1531 real_challenge);
1532 av_strlcatf(cmd, sizeof(cmd),
1533 "If-Match: %s\r\n"
1534 "RealChallenge2: %s, sd=%s\r\n",
1535 rt->session_id, real_res, real_csum);
1536 }
b17d11c6 1537 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1538 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1539 err = 1;
1540 goto fail;
7e6ca34f
RB
1541 } else if (reply->status_code != RTSP_STATUS_OK ||
1542 reply->nb_transports != 1) {
1617ad97
FB
1543 err = AVERROR_INVALIDDATA;
1544 goto fail;
1545 }
1546
1547 /* XXX: same protocol for all streams is required */
1548 if (i > 0) {
119b4668
RB
1549 if (reply->transports[0].lower_transport != rt->lower_transport ||
1550 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1551 err = AVERROR_INVALIDDATA;
1552 goto fail;
1553 }
1554 } else {
90abbdba 1555 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1556 rt->transport = reply->transports[0].transport;
1617ad97
FB
1557 }
1558
8c579c1c
MS
1559 /* Fail if the server responded with another lower transport mode
1560 * than what we requested. */
1561 if (reply->transports[0].lower_transport != lower_transport) {
1562 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1563 err = AVERROR_INVALIDDATA;
1564 goto fail;
1617ad97
FB
1565 }
1566
90abbdba
RB
1567 switch(reply->transports[0].lower_transport) {
1568 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1569 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1570 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1571 break;
115329f1 1572
c8965800 1573 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1574 char url[1024], options[30] = "";
fd8f91e3 1575 const char *peer = host;
c8965800 1576
9867aea5 1577 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
a92c30d7 1578 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8 1579 /* Use source address if specified */
fd8f91e3
MS
1580 if (reply->transports[0].source[0])
1581 peer = reply->transports[0].source;
1582 ff_url_join(url, sizeof(url), "rtp", NULL, peer,
1583 reply->transports[0].server_port_min, "%s", options);
c8965800 1584 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1585 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1586 err = AVERROR_INVALIDDATA;
1587 goto fail;
1617ad97
FB
1588 }
1589 break;
c8965800
RB
1590 }
1591 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
6294d708 1592 char url[1024], namebuf[50], optbuf[20] = "";
7934b15d 1593 struct sockaddr_storage addr;
c8965800
RB
1594 int port, ttl;
1595
7934b15d
MS
1596 if (reply->transports[0].destination.ss_family) {
1597 addr = reply->transports[0].destination;
c8965800
RB
1598 port = reply->transports[0].port_min;
1599 ttl = reply->transports[0].ttl;
1600 } else {
7934b15d 1601 addr = rtsp_st->sdp_ip;
c8965800
RB
1602 port = rtsp_st->sdp_port;
1603 ttl = rtsp_st->sdp_ttl;
1604 }
6294d708
MS
1605 if (ttl > 0)
1606 snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
7934b15d
MS
1607 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1608 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1609 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
6294d708 1610 port, "%s", optbuf);
6f1b7b39 1611 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1612 &s->interrupt_callback, NULL) < 0) {
c8965800
RB
1613 err = AVERROR_INVALIDDATA;
1614 goto fail;
1617ad97
FB
1615 }
1616 break;
1617 }
c8965800 1618 }
d1ccf0e0 1619
6e71c120 1620 if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1621 goto fail;
1617ad97
FB
1622 }
1623
62c3c8ca 1624 if (rt->nb_rtsp_streams && reply->timeout > 0)
30e79845
RB
1625 rt->timeout = reply->timeout;
1626
2e889ae4 1627 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1628 rt->need_subscription = 1;
1629
53620bba
RB
1630 return 0;
1631
1632fail:
50aef03b 1633 ff_rtsp_undo_setup(s, 0);
53620bba
RB
1634 return err;
1635}
1636
b8c2c41d
JA
1637void ff_rtsp_close_connections(AVFormatContext *s)
1638{
1639 RTSPState *rt = s->priv_data;
e52a9145
AK
1640 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1641 ffurl_close(rt->rtsp_hd);
6217b645 1642 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1643}
1644
3307e6ea 1645int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1646{
1647 RTSPState *rt = s->priv_data;
8b2e9636
LB
1648 char proto[128], host[1024], path[1024];
1649 char tcpname[1024], cmd[2048], auth[128];
1650 const char *lower_rtsp_proto = "tcp";
03f8fc08 1651 int port, err, tcp_fd;
354b7573 1652 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1653 int lower_transport_mask = 0;
8b2e9636 1654 int default_port = RTSP_DEFAULT_PORT;
2762a7a2 1655 char real_challenge[64] = "";
03f8fc08
MS
1656 struct sockaddr_storage peer;
1657 socklen_t peer_len = sizeof(peer);
57b5555c 1658
dbb06b8c
MS
1659 if (rt->rtp_port_max < rt->rtp_port_min) {
1660 av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1661 "than min port %d\n", rt->rtp_port_max,
1662 rt->rtp_port_min);
1663 return AVERROR(EINVAL);
1664 }
1665
57b5555c
MS
1666 if (!ff_network_init())
1667 return AVERROR(EIO);
eca4850c 1668
4fa57d52 1669 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1670 s->max_delay = s->iformat ? DEFAULT_REORDERING_DELAY : 0;
4fa57d52 1671
f5d33f52 1672 rt->control_transport = RTSP_MODE_PLAIN;
eca4850c
MS
1673 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1674 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1675 rt->control_transport = RTSP_MODE_TUNNEL;
1676 }
1677 /* Only pass through valid flags from here */
1678 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
eca4850c
MS
1679
1680redirect:
53620bba 1681 /* extract hostname and port */
8b2e9636 1682 av_url_split(proto, sizeof(proto), auth, sizeof(auth),
f984dcf6 1683 host, sizeof(host), &port, path, sizeof(path), s->filename);
8b2e9636
LB
1684
1685 if (!strcmp(proto, "rtsps")) {
1686 lower_rtsp_proto = "tls";
1687 default_port = RTSPS_DEFAULT_PORT;
1688 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1689 }
1690
f9337897 1691 if (*auth) {
aa8bf2fb 1692 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1693 }
53620bba 1694 if (port < 0)
8b2e9636
LB
1695 port = default_port;
1696
1697 lower_transport_mask = rt->lower_transport_mask;
53620bba 1698
90abbdba 1699 if (!lower_transport_mask)
2a1d51c5 1700 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1701
3e24c770 1702 if (s->oformat) {
b7dc88fc
MS
1703 /* Only UDP or TCP - UDP multicast isn't supported. */
1704 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1705 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1706 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1707 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1708 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1709 err = AVERROR(EINVAL);
1710 goto fail;
1711 }
1712 }
1713
4bc5cc23
MS
1714 /* Construct the URI used in request; this is similar to s->filename,
1715 * but with authentication credentials removed and RTSP specific options
1716 * stripped out. */
8b2e9636 1717 ff_url_join(rt->control_uri, sizeof(rt->control_uri), proto, NULL,
4bc5cc23
MS
1718 host, port, "%s", path);
1719
f5d33f52
JA
1720 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1721 /* set up initial handshake for tunneling */
1722 char httpname[1024];
1723 char sessioncookie[17];
1724 char headers[1024];
1725
10ed37b5 1726 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1727 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1728 av_get_random_seed(), av_get_random_seed());
1729
1730 /* GET requests */
6f1b7b39
MS
1731 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1732 &s->interrupt_callback) < 0) {
f5d33f52
JA
1733 err = AVERROR(EIO);
1734 goto fail;
1735 }
1736
1737 /* generate GET headers */
1738 snprintf(headers, sizeof(headers),
1739 "x-sessioncookie: %s\r\n"
1740 "Accept: application/x-rtsp-tunnelled\r\n"
1741 "Pragma: no-cache\r\n"
1742 "Cache-Control: no-cache\r\n",
1743 sessioncookie);
196bf28c 1744 av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
f5d33f52
JA
1745
1746 /* complete the connection */
ddffc2fd 1747 if (ffurl_connect(rt->rtsp_hd, NULL)) {
f5d33f52
JA
1748 err = AVERROR(EIO);
1749 goto fail;
1750 }
1751
1752 /* POST requests */
6f1b7b39
MS
1753 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
1754 &s->interrupt_callback) < 0 ) {
f5d33f52
JA
1755 err = AVERROR(EIO);
1756 goto fail;
1757 }
1758
1759 /* generate POST headers */
1760 snprintf(headers, sizeof(headers),
1761 "x-sessioncookie: %s\r\n"
1762 "Content-Type: application/x-rtsp-tunnelled\r\n"
1763 "Pragma: no-cache\r\n"
1764 "Cache-Control: no-cache\r\n"
1765 "Content-Length: 32767\r\n"
1766 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1767 sessioncookie);
196bf28c 1768 av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
6149485f 1769 av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
f5d33f52 1770
a8ead332
MS
1771 /* Initialize the authentication state for the POST session. The HTTP
1772 * protocol implementation doesn't properly handle multi-pass
1773 * authentication for POST requests, since it would require one of
1774 * the following:
1775 * - implementing Expect: 100-continue, which many HTTP servers
1776 * don't support anyway, even less the RTSP servers that do HTTP
1777 * tunneling
1778 * - sending the whole POST data until getting a 401 reply specifying
1779 * what authentication method to use, then resending all that data
1780 * - waiting for potential 401 replies directly after sending the
1781 * POST header (waiting for some unspecified time)
1782 * Therefore, we copy the full auth state, which works for both basic
1783 * and digest. (For digest, we would have to synchronize the nonce
1784 * count variable between the two sessions, if we'd do more requests
1785 * with the original session, though.)
1786 */
1787 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1788
9290f15d 1789 /* complete the connection */
ddffc2fd 1790 if (ffurl_connect(rt->rtsp_hd_out, NULL)) {
9290f15d
MS
1791 err = AVERROR(EIO);
1792 goto fail;
1793 }
f5d33f52 1794 } else {
48e77473 1795 /* open the tcp connection */
8b2e9636
LB
1796 ff_url_join(tcpname, sizeof(tcpname), lower_rtsp_proto, NULL,
1797 host, port, NULL);
6f1b7b39 1798 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
ddffc2fd 1799 &s->interrupt_callback, NULL) < 0) {
41874d0a
JA
1800 err = AVERROR(EIO);
1801 goto fail;
1802 }
00e4a1f4 1803 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1804 }
53620bba
RB
1805 rt->seq = 0;
1806
1869ea03 1807 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
76ccf114
VG
1808 if (tcp_fd < 0) {
1809 err = tcp_fd;
1810 goto fail;
1811 }
03f8fc08
MS
1812 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1813 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1814 NULL, 0, NI_NUMERICHOST);
1815 }
1816
c8965800
RB
1817 /* request options supported by the server; this also detects server
1818 * type */
1cf151e9 1819 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1820 cmd[0] = 0;
2e889ae4 1821 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1822 av_strlcat(cmd,
f75e3da5 1823 /*
1cf151e9
RB
1824 * The following entries are required for proper
1825 * streaming from a Realmedia server. They are
1826 * interdependent in some way although we currently
1827 * don't quite understand how. Values were copied
1828 * from mplayer SVN r23589.
f75e3da5
DB
1829 * ClientChallenge is a 16-byte ID in hex
1830 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1831 */
1832 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1833 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1834 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1835 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1836 sizeof(cmd));
b17d11c6 1837 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1838 if (reply->status_code != RTSP_STATUS_OK) {
1839 err = AVERROR_INVALIDDATA;
1840 goto fail;
1841 }
1842
1843 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1844 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1845 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1846 continue;
bb3244de 1847 } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
7a86bafa 1848 rt->server_type = RTSP_SERVER_WMS;
c8965800 1849 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1850 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1851 break;
1852 }
1853
604c9b11 1854 if (CONFIG_RTSP_DEMUXER && s->iformat)
0526c6f7 1855 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1856 else if (CONFIG_RTSP_MUXER)
c2688f3a 1857 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1858 if (err)
53620bba 1859 goto fail;
53620bba 1860
8a8754d8 1861 do {
c8965800
RB
1862 int lower_transport = ff_log2_tab[lower_transport_mask &
1863 ~(lower_transport_mask - 1)];
8a8754d8 1864
fef5649a 1865 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1866 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1867 real_challenge : NULL);
8a8754d8 1868 if (err < 0)
7e6ca34f 1869 goto fail;
90abbdba
RB
1870 lower_transport_mask &= ~(1 << lower_transport);
1871 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1872 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1873 goto fail;
1874 }
1875 } while (err);
53620bba 1876
2762a7a2
MS
1877 rt->lower_transport_mask = lower_transport_mask;
1878 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1879 rt->state = RTSP_STATE_IDLE;
c8965800 1880 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1881 return 0;
1882 fail:
3307e6ea 1883 ff_rtsp_close_streams(s);
b8c2c41d 1884 ff_rtsp_close_connections(s);
35cfd646 1885 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30 1886 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
2f172f1a 1887 rt->session_id[0] = '\0';
d243ba30
LB
1888 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1889 reply->status_code,
1890 s->filename);
1891 goto redirect;
1892 }
57b5555c 1893 ff_network_close();
1617ad97
FB
1894 return err;
1895}
2e802e38 1896#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1897
44b70ce5 1898#if CONFIG_RTPDEC
0e59034e 1899static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1900 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1901{
1902 RTSPState *rt = s->priv_data;
1903 RTSPStream *rtsp_st;
a8475bbd
LB
1904 int n, i, ret, tcp_fd, timeout_cnt = 0;
1905 int max_p = 0;
1906 struct pollfd *p = rt->p;
e7993ece 1907 int *fds = NULL, fdsnum, fdsidx;
0e59034e 1908
c8965800 1909 for (;;) {
9957cdbf 1910 if (ff_check_interrupt(&s->interrupt_callback))
c76374c6 1911 return AVERROR_EXIT;
6df9d9b5 1912 if (wait_end && wait_end - av_gettime_relative() < 0)
321259c1 1913 return AVERROR(EAGAIN);
a8475bbd 1914 max_p = 0;
0e59034e 1915 if (rt->rtsp_hd) {
1869ea03 1916 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1917 p[max_p].fd = tcp_fd;
1918 p[max_p++].events = POLLIN;
0e59034e 1919 } else {
0e59034e
RB
1920 tcp_fd = -1;
1921 }
c8965800 1922 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1923 rtsp_st = rt->rtsp_streams[i];
1924 if (rtsp_st->rtp_handle) {
e7993ece
JO
1925 if (ret = ffurl_get_multi_file_handle(rtsp_st->rtp_handle,
1926 &fds, &fdsnum)) {
1927 av_log(s, AV_LOG_ERROR, "Unable to recover rtp ports\n");
1928 return ret;
1929 }
1930 if (fdsnum != 2) {
1931 av_log(s, AV_LOG_ERROR,
1932 "Number of fds %d not supported\n", fdsnum);
1933 return AVERROR_INVALIDDATA;
1934 }
1935 for (fdsidx = 0; fdsidx < fdsnum; fdsidx++) {
1936 p[max_p].fd = fds[fdsidx];
1937 p[max_p++].events = POLLIN;
1938 }
1939 av_free(fds);
0e59034e
RB
1940 }
1941 }
a8475bbd 1942 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1943 if (n > 0) {
a8475bbd 1944 int j = 1 - (tcp_fd == -1);
9cba6f5f 1945 timeout_cnt = 0;
c8965800 1946 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1947 rtsp_st = rt->rtsp_streams[i];
1948 if (rtsp_st->rtp_handle) {
a8475bbd 1949 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1950 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1951 if (ret > 0) {
1952 *prtsp_st = rtsp_st;
1953 return ret;
1954 }
1955 }
a8475bbd 1956 j+=2;
0e59034e
RB
1957 }
1958 }
5fe8021a 1959#if CONFIG_RTSP_DEMUXER
a8475bbd 1960 if (tcp_fd != -1 && p[0].revents & POLLIN) {
a8ad6ffa
JO
1961 if (rt->rtsp_flags & RTSP_FLAG_LISTEN) {
1962 if (rt->state == RTSP_STATE_STREAMING) {
1963 if (!ff_rtsp_parse_streaming_commands(s))
1964 return AVERROR_EOF;
1965 else
1966 av_log(s, AV_LOG_WARNING,
1967 "Unable to answer to TEARDOWN\n");
1968 } else
1969 return 0;
1970 } else {
1971 RTSPMessageHeader reply;
1972 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
1973 if (ret < 0)
1974 return ret;
1975 /* XXX: parse message */
1976 if (rt->state != RTSP_STATE_STREAMING)
1977 return 0;
1978 }
0e59034e 1979 }
5fe8021a 1980#endif
9cba6f5f 1981 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1982 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1983 } else if (n < 0 && errno != EINTR)
1984 return AVERROR(errno);
0e59034e
RB
1985 }
1986}
1987
e96406ed
MS
1988static int pick_stream(AVFormatContext *s, RTSPStream **rtsp_st,
1989 const uint8_t *buf, int len)
1990{
1991 RTSPState *rt = s->priv_data;
1992 int i;
1993 if (len < 0)
1994 return len;
1995 if (rt->nb_rtsp_streams == 1) {
1996 *rtsp_st = rt->rtsp_streams[0];
1997 return len;
1998 }
1999 if (len >= 8 && rt->transport == RTSP_TRANSPORT_RTP) {
2000 if (RTP_PT_IS_RTCP(rt->recvbuf[1])) {
2001 int no_ssrc = 0;
2002 for (i = 0; i < rt->nb_rtsp_streams; i++) {
2003 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
2004 if (!rtpctx)
2005 continue;
2006 if (rtpctx->ssrc == AV_RB32(&buf[4])) {
2007 *rtsp_st = rt->rtsp_streams[i];
2008 return len;
2009 }
2010 if (!rtpctx->ssrc)
2011 no_ssrc = 1;
2012 }
2013 if (no_ssrc) {
2014 av_log(s, AV_LOG_WARNING,
2015 "Unable to pick stream for packet - SSRC not known for "
2016 "all streams\n");
2017 return AVERROR(EAGAIN);
2018 }
2019 } else {
2020 for (i = 0; i < rt->nb_rtsp_streams; i++) {
2021 if ((buf[1] & 0x7f) == rt->rtsp_streams[i]->sdp_payload_type) {
2022 *rtsp_st = rt->rtsp_streams[i];
2023 return len;
2024 }
2025 }
2026 }
2027 }
2028 av_log(s, AV_LOG_WARNING, "Unable to pick stream for packet\n");
2029 return AVERROR(EAGAIN);
2030}
2031
0526c6f7 2032int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
2033{
2034 RTSPState *rt = s->priv_data;
2035 int ret, len;
321259c1
MS
2036 RTSPStream *rtsp_st, *first_queue_st = NULL;
2037 int64_t wait_end = 0;
0e59034e 2038
b20359f5
JA
2039 if (rt->nb_byes == rt->nb_rtsp_streams)
2040 return AVERROR_EOF;
2041
0e59034e
RB
2042 /* get next frames from the same RTP packet */
2043 if (rt->cur_transport_priv) {
c8965800 2044 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 2045 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1243c722 2046 } else if (rt->transport == RTSP_TRANSPORT_RTP) {
bfc6db44 2047 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
604c9b11 2048 } else if (CONFIG_RTPDEC && rt->ts) {
1243c722
MS
2049 ret = ff_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf + rt->recvbuf_pos, rt->recvbuf_len - rt->recvbuf_pos);
2050 if (ret >= 0) {
2051 rt->recvbuf_pos += ret;
2052 ret = rt->recvbuf_pos < rt->recvbuf_len;
2053 }
2f41eaa9
MS
2054 } else
2055 ret = -1;
0e59034e
RB
2056 if (ret == 0) {
2057 rt->cur_transport_priv = NULL;
2058 return 0;
2059 } else if (ret == 1) {
2060 return 0;
c8965800 2061 } else
0e59034e 2062 rt->cur_transport_priv = NULL;
0e59034e
RB
2063 }
2064
8729698d 2065redo:
321259c1
MS
2066 if (rt->transport == RTSP_TRANSPORT_RTP) {
2067 int i;
2068 int64_t first_queue_time = 0;
2069 for (i = 0; i < rt->nb_rtsp_streams; i++) {
2070 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
2071 int64_t queue_time;
2072 if (!rtpctx)
2073 continue;
2074 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
2075 if (queue_time && (queue_time - first_queue_time < 0 ||
2076 !first_queue_time)) {
2077 first_queue_time = queue_time;
2078 first_queue_st = rt->rtsp_streams[i];
2079 }
2080 }
8729698d 2081 if (first_queue_time) {
321259c1 2082 wait_end = first_queue_time + s->max_delay;
8729698d
MS
2083 } else {
2084 wait_end = 0;
2085 first_queue_st = NULL;
2086 }
321259c1
MS
2087 }
2088
0e59034e 2089 /* read next RTP packet */
96a7c975
MS
2090 if (!rt->recvbuf) {
2091 rt->recvbuf = av_malloc(RECVBUF_SIZE);
2092 if (!rt->recvbuf)
2093 return AVERROR(ENOMEM);
2094 }
2095
0e59034e
RB
2096 switch(rt->lower_transport) {
2097 default:
5fe8021a 2098#if CONFIG_RTSP_DEMUXER
0e59034e 2099 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 2100 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 2101 break;
5fe8021a 2102#endif
0e59034e
RB
2103 case RTSP_LOWER_TRANSPORT_UDP:
2104 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 2105 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 2106 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
e96406ed
MS
2107 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, rtsp_st->rtp_handle, NULL, len);
2108 break;
2109 case RTSP_LOWER_TRANSPORT_CUSTOM:
f811cd2d 2110 if (first_queue_st && rt->transport == RTSP_TRANSPORT_RTP &&
6df9d9b5 2111 wait_end && wait_end < av_gettime_relative())
f811cd2d
MS
2112 len = AVERROR(EAGAIN);
2113 else
2114 len = ffio_read_partial(s->pb, rt->recvbuf, RECVBUF_SIZE);
e96406ed
MS
2115 len = pick_stream(s, &rtsp_st, rt->recvbuf, len);
2116 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
2117 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, NULL, s->pb, len);
0e59034e
RB
2118 break;
2119 }
321259c1
MS
2120 if (len == AVERROR(EAGAIN) && first_queue_st &&
2121 rt->transport == RTSP_TRANSPORT_RTP) {
1ec611a1
EB
2122 av_log(s, AV_LOG_WARNING,
2123 "max delay reached. need to consume packet\n");
321259c1 2124 rtsp_st = first_queue_st;
bfc6db44 2125 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
2126 goto end;
2127 }
0e59034e
RB
2128 if (len < 0)
2129 return len;
2130 if (len == 0)
2131 return AVERROR_EOF;
c8965800 2132 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 2133 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
df8cf076 2134 } else if (rt->transport == RTSP_TRANSPORT_RTP) {
bfc6db44 2135 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
86d9181c
MS
2136 if (rtsp_st->feedback) {
2137 AVIOContext *pb = NULL;
2138 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_CUSTOM)
2139 pb = s->pb;
2140 ff_rtp_send_rtcp_feedback(rtsp_st->transport_priv, rtsp_st->rtp_handle, pb);
2141 }
2cab6b48
MS
2142 if (ret < 0) {
2143 /* Either bad packet, or a RTCP packet. Check if the
2144 * first_rtcp_ntp_time field was initialized. */
2145 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
2146 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
2147 /* first_rtcp_ntp_time has been initialized for this stream,
2148 * copy the same value to all other uninitialized streams,
2149 * in order to map their timestamp origin to the same ntp time
2150 * as this one. */
2151 int i;
3a1cdcc7
MS
2152 AVStream *st = NULL;
2153 if (rtsp_st->stream_index >= 0)
2154 st = s->streams[rtsp_st->stream_index];
2cab6b48 2155 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 2156 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
2157 AVStream *st2 = NULL;
2158 if (rt->rtsp_streams[i]->stream_index >= 0)
2159 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
2160 if (rtpctx2 && st && st2 &&
2161 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 2162 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
2163 rtpctx2->rtcp_ts_offset = av_rescale_q(
2164 rtpctx->rtcp_ts_offset, st->time_base,
2165 st2->time_base);
2166 }
2cab6b48
MS
2167 }
2168 }
b20359f5
JA
2169 if (ret == -RTCP_BYE) {
2170 rt->nb_byes++;
2171
2172 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
2173 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
2174
2175 if (rt->nb_byes == rt->nb_rtsp_streams)
2176 return AVERROR_EOF;
2177 }
2cab6b48 2178 }
604c9b11 2179 } else if (CONFIG_RTPDEC && rt->ts) {
1243c722
MS
2180 ret = ff_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf, len);
2181 if (ret >= 0) {
2182 if (ret < len) {
2183 rt->recvbuf_len = len;
2184 rt->recvbuf_pos = ret;
2185 rt->cur_transport_priv = rt->ts;
2186 return 1;
2187 } else {
2188 ret = 0;
2189 }
2190 }
df8cf076
MS
2191 } else {
2192 return AVERROR_INVALIDDATA;
2cab6b48 2193 }
321259c1 2194end:
0e59034e
RB
2195 if (ret < 0)
2196 goto redo;
c8965800 2197 if (ret == 1)
0e59034e
RB
2198 /* more packets may follow, so we save the RTP context */
2199 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
2200
2201 return ret;
2202}
44b70ce5 2203#endif /* CONFIG_RTPDEC */
0e59034e 2204
44b70ce5 2205#if CONFIG_SDP_DEMUXER
cb1fdc61 2206static int sdp_probe(AVProbeData *p1)
93ced3e8 2207{
0e1ceacd 2208 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 2209
3fbd12d1 2210 /* we look for a line beginning "c=IN IP" */
0e1ceacd 2211 while (p < p_end && *p != '\0') {
3fbd12d1
MS
2212 if (p + sizeof("c=IN IP") - 1 < p_end &&
2213 av_strstart(p, "c=IN IP", NULL))
e0f8be64 2214 return AVPROBE_SCORE_EXTENSION;
0e1ceacd 2215
c8965800 2216 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 2217 if (++p >= p_end)
cb1fdc61 2218 break;
cb1fdc61
FB
2219 if (*p == '\r')
2220 p++;
2221 }
93ced3e8
FB
2222 return 0;
2223}
2224
1f57d601
ET
2225static void append_source_addrs(char *buf, int size, const char *name,
2226 int count, struct RTSPSource **addrs)
2227{
2228 int i;
2229 if (!count)
2230 return;
2231 av_strlcatf(buf, size, "&%s=%s", name, addrs[0]->addr);
2232 for (i = 1; i < count; i++)
2233 av_strlcatf(buf, size, ",%s", addrs[i]->addr);
2234}
2235
6e9651d1 2236static int sdp_read_header(AVFormatContext *s)
93ced3e8 2237{
8b1ab7bf 2238 RTSPState *rt = s->priv_data;
93ced3e8
FB
2239 RTSPStream *rtsp_st;
2240 int size, i, err;
2241 char *content;
2242 char url[1024];
2243
57b5555c
MS
2244 if (!ff_network_init())
2245 return AVERROR(EIO);
2246
4fa57d52 2247 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 2248 s->max_delay = DEFAULT_REORDERING_DELAY;
e96406ed
MS
2249 if (rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)
2250 rt->lower_transport = RTSP_LOWER_TRANSPORT_CUSTOM;
4fa57d52 2251
93ced3e8
FB
2252 /* read the whole sdp file */
2253 /* XXX: better loading */
2254 content = av_malloc(SDP_MAX_SIZE);
0b72a47f
HS
2255 if (!content)
2256 return AVERROR(ENOMEM);
b7effd4e 2257 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
2258 if (size <= 0) {
2259 av_free(content);
2260 return AVERROR_INVALIDDATA;
2261 }
2262 content[size] ='\0';
2263
f81c7ac7 2264 err = ff_sdp_parse(s, content);
93ced3e8 2265 av_free(content);
f81c7ac7 2266 if (err) goto fail;
93ced3e8
FB
2267
2268 /* open each RTP stream */
c8965800 2269 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 2270 char namebuf[50];
8b1ab7bf 2271 rtsp_st = rt->rtsp_streams[i];
115329f1 2272
e96406ed 2273 if (!(rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)) {
e3ec6fe7
LB
2274 AVDictionary *opts = map_to_opts(rt);
2275
98063bcf
LB
2276 err = getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip,
2277 sizeof(rtsp_st->sdp_ip),
2278 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
2279 if (err) {
2280 av_log(s, AV_LOG_ERROR, "getnameinfo: %s\n", gai_strerror(err));
2281 err = AVERROR(EIO);
d5f5c90b 2282 av_dict_free(&opts);
98063bcf
LB
2283 goto fail;
2284 }
e96406ed
MS
2285 ff_url_join(url, sizeof(url), "rtp", NULL,
2286 namebuf, rtsp_st->sdp_port,
b56fc18b
MS
2287 "?localport=%d&ttl=%d&connect=%d&write_to_source=%d",
2288 rtsp_st->sdp_port, rtsp_st->sdp_ttl,
2289 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0,
2290 rt->rtsp_flags & RTSP_FLAG_RTCP_TO_SOURCE ? 1 : 0);
1f57d601
ET
2291
2292 append_source_addrs(url, sizeof(url), "sources",
2293 rtsp_st->nb_include_source_addrs,
2294 rtsp_st->include_source_addrs);
2295 append_source_addrs(url, sizeof(url), "block",
2296 rtsp_st->nb_exclude_source_addrs,
2297 rtsp_st->exclude_source_addrs);
e3ec6fe7
LB
2298 err = ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
2299 &s->interrupt_callback, &opts);
2300
2301 av_dict_free(&opts);
2302
2303 if (err < 0) {
e96406ed
MS
2304 err = AVERROR_INVALIDDATA;
2305 goto fail;
2306 }
93ced3e8 2307 }
6e71c120 2308 if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 2309 goto fail;
93ced3e8
FB
2310 }
2311 return 0;
c8965800 2312fail:
3307e6ea 2313 ff_rtsp_close_streams(s);
57b5555c 2314 ff_network_close();
93ced3e8
FB
2315 return err;
2316}
2317
93ced3e8
FB
2318static int sdp_read_close(AVFormatContext *s)
2319{
3307e6ea 2320 ff_rtsp_close_streams(s);
57b5555c 2321 ff_network_close();
93ced3e8
FB
2322 return 0;
2323}
2324
51369f28
MS
2325static const AVClass sdp_demuxer_class = {
2326 .class_name = "SDP demuxer",
2327 .item_name = av_default_item_name,
2328 .option = sdp_options,
2329 .version = LIBAVUTIL_VERSION_INT,
2330};
2331
c6610a21 2332AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
2333 .name = "sdp",
2334 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
2335 .priv_data_size = sizeof(RTSPState),
2336 .read_probe = sdp_probe,
2337 .read_header = sdp_read_header,
2338 .read_packet = ff_rtsp_fetch_packet,
2339 .read_close = sdp_read_close,
17934c18 2340 .priv_class = &sdp_demuxer_class,
93ced3e8 2341};
44b70ce5 2342#endif /* CONFIG_SDP_DEMUXER */
44594cc7 2343
44b70ce5 2344#if CONFIG_RTP_DEMUXER
44594cc7
MS
2345static int rtp_probe(AVProbeData *p)
2346{
2347 if (av_strstart(p->filename, "rtp:", NULL))
2348 return AVPROBE_SCORE_MAX;
2349 return 0;
2350}
2351
6e9651d1 2352static int rtp_read_header(AVFormatContext *s)
44594cc7 2353{
350ad50b 2354 uint8_t recvbuf[RTP_MAX_PACKET_LENGTH];
44594cc7
MS
2355 char host[500], sdp[500];
2356 int ret, port;
2357 URLContext* in = NULL;
2358 int payload_type;
a92be9b8 2359 AVCodecContext codec = { 0 };
44594cc7 2360 struct sockaddr_storage addr;
ae628ec1 2361 AVIOContext pb;
44594cc7 2362 socklen_t addrlen = sizeof(addr);
30266038 2363 RTSPState *rt = s->priv_data;
44594cc7
MS
2364
2365 if (!ff_network_init())
2366 return AVERROR(EIO);
2367
6f1b7b39 2368 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ,
ddffc2fd 2369 &s->interrupt_callback, NULL);
44594cc7
MS
2370 if (ret)
2371 goto fail;
2372
2373 while (1) {
bc371aca 2374 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
44594cc7
MS
2375 if (ret == AVERROR(EAGAIN))
2376 continue;
2377 if (ret < 0)
2378 goto fail;
2379 if (ret < 12) {
2380 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
2381 continue;
2382 }
2383
2384 if ((recvbuf[0] & 0xc0) != 0x80) {
2385 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
2386 "received\n");
2387 continue;
2388 }
2389
298a587f 2390 if (RTP_PT_IS_RTCP(recvbuf[1]))
f3a094f2
MS
2391 continue;
2392
44594cc7
MS
2393 payload_type = recvbuf[1] & 0x7f;
2394 break;
2395 }
1869ea03 2396 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 2397 ffurl_close(in);
44594cc7
MS
2398 in = NULL;
2399
44594cc7
MS
2400 if (ff_rtp_get_codec_info(&codec, payload_type)) {
2401 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
2402 "without an SDP file describing it\n",
2403 payload_type);
2404 goto fail;
2405 }
2406 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
2407 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
2408 "properly you need an SDP file "
2409 "describing it\n");
2410 }
2411
2412 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
2413 NULL, 0, s->filename);
2414
2415 snprintf(sdp, sizeof(sdp),
2416 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
2417 addr.ss_family == AF_INET ? 4 : 6, host,
2418 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
2419 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
2420 port, payload_type);
2421 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
2422
e731b8d8 2423 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
44594cc7
MS
2424 s->pb = &pb;
2425
2426 /* sdp_read_header initializes this again */
2427 ff_network_close();
2428
30266038
MS
2429 rt->media_type_mask = (1 << (AVMEDIA_TYPE_DATA+1)) - 1;
2430
6e9651d1 2431 ret = sdp_read_header(s);
44594cc7
MS
2432 s->pb = NULL;
2433 return ret;
2434
2435fail:
2436 if (in)
e52a9145 2437 ffurl_close(in);
44594cc7
MS
2438 ff_network_close();
2439 return ret;
2440}
2441
51369f28
MS
2442static const AVClass rtp_demuxer_class = {
2443 .class_name = "RTP demuxer",
2444 .item_name = av_default_item_name,
2445 .option = rtp_options,
2446 .version = LIBAVUTIL_VERSION_INT,
2447};
2448
c6610a21 2449AVInputFormat ff_rtp_demuxer = {
dfc2c4d9 2450 .name = "rtp",
6774247a 2451 .long_name = NULL_IF_CONFIG_SMALL("RTP input"),
dfc2c4d9
AK
2452 .priv_data_size = sizeof(RTSPState),
2453 .read_probe = rtp_probe,
2454 .read_header = rtp_read_header,
2455 .read_packet = ff_rtsp_fetch_packet,
2456 .read_close = sdp_read_close,
17934c18
MS
2457 .flags = AVFMT_NOFILE,
2458 .priv_class = &rtp_demuxer_class,
44594cc7 2459};
44b70ce5 2460#endif /* CONFIG_RTP_DEMUXER */