configure: Remove redundant RTMPT/RTMPTS dependencies
[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"
1617ad97 30#include "avformat.h"
e731b8d8 31#include "avio_internal.h"
1617ad97 32
a8475bbd
LB
33#if HAVE_POLL_H
34#include <poll.h>
6ad1c9c9 35#endif
e4a9e3cc 36#include "internal.h"
42572ef5 37#include "network.h"
cbfa66d0 38#include "os_support.h"
f5d33f52 39#include "http.h"
c971ff19 40#include "rtsp.h"
1617ad97 41
302879cb 42#include "rtpdec.h"
e9dea59f 43#include "rdt.h"
965a3ddb 44#include "rtpdec_formats.h"
a493f80a 45#include "rtpenc_chain.h"
5652bb94 46#include "url.h"
17fff881 47#include "rtpenc.h"
4934884a 48
1617ad97
FB
49//#define DEBUG
50
a8475bbd 51/* Timeout values for socket poll, in ms,
9cba6f5f 52 * and read_packet(), in seconds */
a8475bbd 53#define POLL_TIMEOUT_MS 100
9cba6f5f 54#define READ_PACKET_TIMEOUT_S 10
a8475bbd 55#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS
91af5601 56#define SDP_MAX_SIZE 16384
96a7c975 57#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
ccfa8aa2 58#define DEFAULT_REORDERING_DELAY 100000
9cba6f5f 59
2c9aa024
MS
60#define OFFSET(x) offsetof(RTSPState, x)
61#define DEC AV_OPT_FLAG_DECODING_PARAM
eca4850c 62#define ENC AV_OPT_FLAG_ENCODING_PARAM
3a6765fb
MS
63
64#define RTSP_FLAG_OPTS(name, longname) \
65 { name, longname, OFFSET(rtsp_flags), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, DEC, "rtsp_flags" }, \
a8ad6ffa
JO
66 { "filter_src", "Only receive packets from the negotiated peer IP", 0, AV_OPT_TYPE_CONST, {RTSP_FLAG_FILTER_SRC}, 0, 0, DEC, "rtsp_flags" }, \
67 { "listen", "Wait for incoming connections", 0, AV_OPT_TYPE_CONST, {RTSP_FLAG_LISTEN}, 0, 0, DEC, "rtsp_flags" }
3a6765fb 68
f011fcd6
JB
69#define RTSP_MEDIATYPE_OPTS(name, longname) \
70 { name, longname, OFFSET(media_type_mask), AV_OPT_TYPE_FLAGS, { (1 << (AVMEDIA_TYPE_DATA+1)) - 1 }, INT_MIN, INT_MAX, DEC, "allowed_media_types" }, \
71 { "video", "Video", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_VIDEO}, 0, 0, DEC, "allowed_media_types" }, \
72 { "audio", "Audio", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_AUDIO}, 0, 0, DEC, "allowed_media_types" }, \
73 { "data", "Data", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_DATA}, 0, 0, DEC, "allowed_media_types" }
74
17fff881 75const AVOption ff_rtsp_options[] = {
2c9aa024 76 { "initial_pause", "Don't start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_INT, {0}, 0, 1, DEC },
c2ff63e3 77 FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags)
eca4850c
MS
78 { "rtsp_transport", "RTSP transport protocols", OFFSET(lower_transport_mask), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, DEC|ENC, "rtsp_transport" }, \
79 { "udp", "UDP", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_UDP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
80 { "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
81 { "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, "rtsp_transport" },
82 { "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {(1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, "rtsp_transport" },
3a6765fb 83 RTSP_FLAG_OPTS("rtsp_flags", "RTSP flags"),
f011fcd6 84 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
dbb06b8c
MS
85 { "min_port", "Minimum local UDP port", OFFSET(rtp_port_min), AV_OPT_TYPE_INT, {RTSP_RTP_PORT_MIN}, 0, 65535, DEC|ENC },
86 { "max_port", "Maximum local UDP port", OFFSET(rtp_port_max), AV_OPT_TYPE_INT, {RTSP_RTP_PORT_MAX}, 0, 65535, DEC|ENC },
a8ad6ffa 87 { "timeout", "Maximum timeout (in seconds) to wait for incoming connections. -1 is infinite. Implies flag listen", OFFSET(initial_timeout), AV_OPT_TYPE_INT, {-1}, INT_MIN, INT_MAX, DEC },
17fff881
MS
88 { NULL },
89};
90
51369f28
MS
91static const AVOption sdp_options[] = {
92 RTSP_FLAG_OPTS("sdp_flags", "SDP flags"),
f011fcd6 93 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
51369f28
MS
94 { NULL },
95};
96
97static const AVOption rtp_options[] = {
98 RTSP_FLAG_OPTS("rtp_flags", "RTP flags"),
99 { NULL },
100};
101
1ef36a70
RB
102static void get_word_until_chars(char *buf, int buf_size,
103 const char *sep, const char **pp)
1617ad97
FB
104{
105 const char *p;
106 char *q;
107
108 p = *pp;
30619e6e 109 p += strspn(p, SPACE_CHARS);
1617ad97
FB
110 q = buf;
111 while (!strchr(sep, *p) && *p != '\0') {
112 if ((q - buf) < buf_size - 1)
113 *q++ = *p;
114 p++;
115 }
116 if (buf_size > 0)
117 *q = '\0';
118 *pp = p;
119}
120
1ef36a70
RB
121static void get_word_sep(char *buf, int buf_size, const char *sep,
122 const char **pp)
1617ad97 123{
1ef36a70
RB
124 if (**pp == '/') (*pp)++;
125 get_word_until_chars(buf, buf_size, sep, pp);
126}
1617ad97 127
1ef36a70
RB
128static void get_word(char *buf, int buf_size, const char **pp)
129{
130 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
131}
132
8bf0f969
MS
133/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
134 * and end time.
135 * Used for seeking in the rtp stream.
136 */
137static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
138{
139 char buf[256];
140
141 p += strspn(p, SPACE_CHARS);
142 if (!av_stristart(p, "npt=", &p))
143 return;
144
145 *start = AV_NOPTS_VALUE;
146 *end = AV_NOPTS_VALUE;
147
148 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 149 av_parse_time(start, buf, 1);
8bf0f969
MS
150 if (*p == '-') {
151 p++;
152 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 153 av_parse_time(end, buf, 1);
8bf0f969
MS
154 }
155// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
156// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
157}
158
159static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
160{
a92be9b8 161 struct addrinfo hints = { 0 }, *ai = NULL;
8bf0f969
MS
162 hints.ai_flags = AI_NUMERICHOST;
163 if (getaddrinfo(buf, NULL, &hints, &ai))
164 return -1;
165 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
166 freeaddrinfo(ai);
167 return 0;
168}
169
44b70ce5 170#if CONFIG_RTPDEC
003eb642
MS
171static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
172 RTSPStream *rtsp_st, AVCodecContext *codec)
173{
174 if (!handler)
175 return;
176 codec->codec_id = handler->codec_id;
177 rtsp_st->dynamic_handler = handler;
4b3dc857 178 if (handler->alloc) {
9261e6cf 179 rtsp_st->dynamic_protocol_context = handler->alloc();
4b3dc857
MS
180 if (!rtsp_st->dynamic_protocol_context)
181 rtsp_st->dynamic_handler = NULL;
182 }
003eb642
MS
183}
184
c8965800 185/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 186static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 187 AVStream *st, RTSPStream *rtsp_st,
c8965800 188 int payload_type, const char *p)
93ced3e8 189{
86b6e387 190 AVCodecContext *codec = st->codec;
93ced3e8 191 char buf[256];
d1ccf0e0
RD
192 int i;
193 AVCodec *c;
7b49ce2e 194 const char *c_name;
93ced3e8 195
d1ccf0e0 196 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
197 * see if we can handle this kind of payload.
198 * The space should normally not be there but some Real streams or
199 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
200 * have a trailing space. */
201 get_word_sep(buf, sizeof(buf), "/ ", &p);
6099543a
MS
202 if (payload_type < RTP_PT_PRIVATE) {
203 /* We are in a standard case
204 * (from http://www.iana.org/assignments/rtp-parameters). */
205 /* search into AVRtpPayloadTypes[] */
206 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
207 }
208
209 if (codec->codec_id == CODEC_ID_NONE) {
003eb642
MS
210 RTPDynamicProtocolHandler *handler =
211 ff_rtp_handler_find_by_name(buf, codec->codec_type);
212 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
213 /* If no dynamic handler was found, check with the list of standard
214 * allocated types, if such a stream for some reason happens to
215 * use a private payload type. This isn't handled in rtpdec.c, since
216 * the format name from the rtpmap line never is passed into rtpdec. */
217 if (!rtsp_st->dynamic_handler)
218 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
219 }
220
221 c = avcodec_find_decoder(codec->codec_id);
222 if (c && c->name)
7b49ce2e 223 c_name = c->name;
d1ccf0e0 224 else
170870b7 225 c_name = "(null)";
d1ccf0e0 226
7515ed0c
RB
227 get_word_sep(buf, sizeof(buf), "/", &p);
228 i = atoi(buf);
229 switch (codec->codec_type) {
72415b2a 230 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
231 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
232 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
233 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
234 if (i > 0) {
235 codec->sample_rate = i;
c3f9ebf7 236 avpriv_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
237 get_word_sep(buf, sizeof(buf), "/", &p);
238 i = atoi(buf);
239 if (i > 0)
240 codec->channels = i;
241 // TODO: there is a bug here; if it is a mono stream, and
242 // less than 22000Hz, faad upconverts to stereo and twice
243 // the frequency. No problem, but the sample rate is being
244 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 245 }
7515ed0c
RB
246 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
247 codec->sample_rate);
248 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
249 codec->channels);
250 break;
72415b2a 251 case AVMEDIA_TYPE_VIDEO:
7515ed0c 252 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387 253 if (i > 0)
c3f9ebf7 254 avpriv_set_pts_info(st, 32, 1, i);
7515ed0c
RB
255 break;
256 default:
257 break;
258 }
25836606
MS
259 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->init)
260 rtsp_st->dynamic_handler->init(s, st->index,
261 rtsp_st->dynamic_protocol_context);
7515ed0c 262 return 0;
93ced3e8
FB
263}
264
c2bfd816 265/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
266 * is broken out as a function because it is used in rtp_h264.c, which is
267 * forthcoming. */
3307e6ea 268int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 269 char *value, int value_size)
d0deedcb 270{
30619e6e 271 *p += strspn(*p, SPACE_CHARS);
c8965800 272 if (**p) {
d0deedcb
RM
273 get_word_sep(attr, attr_size, "=", p);
274 if (**p == '=')
275 (*p)++;
276 get_word_sep(value, value_size, ";", p);
277 if (**p == ';')
278 (*p)++;
279 return 1;
280 }
281 return 0;
282}
283
93ced3e8
FB
284typedef struct SDPParseState {
285 /* SDP only */
3fbd12d1 286 struct sockaddr_storage default_ip;
c8965800
RB
287 int default_ttl;
288 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
289} SDPParseState;
290
291static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
292 int letter, const char *buf)
293{
8b1ab7bf 294 RTSPState *rt = s->priv_data;
1617ad97
FB
295 char buf1[64], st_type[64];
296 const char *p;
72415b2a 297 enum AVMediaType codec_type;
fb65d2ca 298 int payload_type, i;
1617ad97
FB
299 AVStream *st;
300 RTSPStream *rtsp_st;
3fbd12d1 301 struct sockaddr_storage sdp_ip;
93ced3e8
FB
302 int ttl;
303
dfd2a005 304 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
305
306 p = buf;
cb760a47
RB
307 if (s1->skip_media && letter != 'm')
308 return;
c8965800 309 switch (letter) {
93ced3e8
FB
310 case 'c':
311 get_word(buf1, sizeof(buf1), &p);
312 if (strcmp(buf1, "IN") != 0)
313 return;
314 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 315 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
316 return;
317 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 318 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
319 return;
320 ttl = 16;
321 if (*p == '/') {
322 p++;
323 get_word_sep(buf1, sizeof(buf1), "/", &p);
324 ttl = atoi(buf1);
325 }
326 if (s->nb_streams == 0) {
327 s1->default_ip = sdp_ip;
328 s1->default_ttl = ttl;
329 } else {
d9c0510e 330 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
331 rtsp_st->sdp_ip = sdp_ip;
332 rtsp_st->sdp_ttl = ttl;
333 }
334 break;
1617ad97 335 case 's':
d2d67e42 336 av_dict_set(&s->metadata, "title", p, 0);
1617ad97
FB
337 break;
338 case 'i':
339 if (s->nb_streams == 0) {
d2d67e42 340 av_dict_set(&s->metadata, "comment", p, 0);
1617ad97
FB
341 break;
342 }
343 break;
344 case 'm':
345 /* new stream */
cb760a47 346 s1->skip_media = 0;
f011fcd6 347 codec_type = AVMEDIA_TYPE_UNKNOWN;
1617ad97
FB
348 get_word(st_type, sizeof(st_type), &p);
349 if (!strcmp(st_type, "audio")) {
72415b2a 350 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 351 } else if (!strcmp(st_type, "video")) {
72415b2a 352 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 353 } else if (!strcmp(st_type, "application")) {
72415b2a 354 codec_type = AVMEDIA_TYPE_DATA;
f011fcd6
JB
355 }
356 if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) {
cb760a47 357 s1->skip_media = 1;
1617ad97
FB
358 return;
359 }
1617ad97
FB
360 rtsp_st = av_mallocz(sizeof(RTSPStream));
361 if (!rtsp_st)
362 return;
8b1ab7bf
FB
363 rtsp_st->stream_index = -1;
364 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
365
366 rtsp_st->sdp_ip = s1->default_ip;
367 rtsp_st->sdp_ttl = s1->default_ttl;
368
93ced3e8
FB
369 get_word(buf1, sizeof(buf1), &p); /* port */
370 rtsp_st->sdp_port = atoi(buf1);
371
372 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 373
93ced3e8
FB
374 /* XXX: handle list of formats */
375 get_word(buf1, sizeof(buf1), &p); /* format list */
376 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 377
7ed19d7f 378 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf 379 /* no corresponding stream */
45600148
MS
380 } else if (rt->server_type == RTSP_SERVER_WMS &&
381 codec_type == AVMEDIA_TYPE_DATA) {
382 /* RTX stream, a stream that carries all the other actual
383 * audio/video streams. Don't expose this to the callers. */
8b1ab7bf 384 } else {
84ad31ff 385 st = avformat_new_stream(s, NULL);
8b1ab7bf
FB
386 if (!st)
387 return;
84ad31ff 388 st->id = rt->nb_rtsp_streams - 1;
8b1ab7bf 389 rtsp_st->stream_index = st->index;
01f4895c 390 st->codec->codec_type = codec_type;
d1ccf0e0 391 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 392 RTPDynamicProtocolHandler *handler;
8b1ab7bf 393 /* if standard payload type, we can find the codec right now */
bf6d9818 394 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
395 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
396 st->codec->sample_rate > 0)
c3f9ebf7 397 avpriv_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
398 /* Even static payload types may need a custom depacketizer */
399 handler = ff_rtp_handler_find_by_id(
400 rtsp_st->sdp_payload_type, st->codec->codec_type);
401 init_rtp_handler(handler, rtsp_st, st->codec);
25836606
MS
402 if (handler && handler->init)
403 handler->init(s, st->index,
404 rtsp_st->dynamic_protocol_context);
8b1ab7bf
FB
405 }
406 }
1617ad97 407 /* put a default control url */
00eb13e0 408 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 409 sizeof(rtsp_st->control_url));
1617ad97
FB
410 break;
411 case 'a':
00eb13e0
AS
412 if (av_strstart(p, "control:", &p)) {
413 if (s->nb_streams == 0) {
414 if (!strncmp(p, "rtsp://", 7))
415 av_strlcpy(rt->control_uri, p,
416 sizeof(rt->control_uri));
417 } else {
0b6a7ff4
MS
418 char proto[32];
419 /* get the control url */
d9c0510e 420 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 421
0b6a7ff4
MS
422 /* XXX: may need to add full url resolution */
423 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
424 NULL, NULL, 0, p);
425 if (proto[0] == '\0') {
426 /* relative control URL */
427 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
428 av_strlcat(rtsp_st->control_url, "/",
429 sizeof(rtsp_st->control_url));
430 av_strlcat(rtsp_st->control_url, p,
431 sizeof(rtsp_st->control_url));
432 } else
433 av_strlcpy(rtsp_st->control_url, p,
434 sizeof(rtsp_st->control_url));
00eb13e0 435 }
83d14c85 436 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 437 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 438 get_word(buf1, sizeof(buf1), &p);
93ced3e8 439 payload_type = atoi(buf1);
d9c0510e 440 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
45600148
MS
441 if (rtsp_st->stream_index >= 0) {
442 st = s->streams[rtsp_st->stream_index];
443 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
444 }
7fc8ac7f
JA
445 } else if (av_strstart(p, "fmtp:", &p) ||
446 av_strstart(p, "framesize:", &p)) {
93ced3e8 447 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
448 // let dynamic protocol handlers have a stab at the line.
449 get_word(buf1, sizeof(buf1), &p);
450 payload_type = atoi(buf1);
d9c0510e
MS
451 for (i = 0; i < rt->nb_rtsp_streams; i++) {
452 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
453 if (rtsp_st->sdp_payload_type == payload_type &&
454 rtsp_st->dynamic_handler &&
455 rtsp_st->dynamic_handler->parse_sdp_a_line)
456 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
457 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 458 }
c8965800 459 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
460 int64_t start, end;
461
462 // this is so that seeking on a streamed file can work.
463 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
464 s->start_time = start;
465 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
466 s->duration = (end == AV_NOPTS_VALUE) ?
467 AV_NOPTS_VALUE : end - start;
119b4668
RB
468 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
469 if (atoi(p) == 1)
470 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
471 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
472 s->nb_streams > 0) {
473 st = s->streams[s->nb_streams - 1];
474 st->codec->sample_rate = atoi(p);
1a30d541
RB
475 } else {
476 if (rt->server_type == RTSP_SERVER_WMS)
477 ff_wms_parse_sdp_a_line(s, p);
478 if (s->nb_streams > 0) {
45600148
MS
479 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
480
c4a3d032 481 if (rt->server_type == RTSP_SERVER_REAL)
45600148 482 ff_real_parse_sdp_a_line(s, rtsp_st->stream_index, p);
c4a3d032 483
c4a3d032
RB
484 if (rtsp_st->dynamic_handler &&
485 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800 486 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
45600148 487 rtsp_st->stream_index,
c4a3d032 488 rtsp_st->dynamic_protocol_context, buf);
1a30d541 489 }
1617ad97
FB
490 }
491 break;
492 }
493}
494
0526c6f7 495int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 496{
a8475bbd 497 RTSPState *rt = s->priv_data;
1617ad97
FB
498 const char *p;
499 int letter;
9211bcdd
RB
500 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
501 * contain long SDP lines containing complete ASF Headers (several
502 * kB) or arrays of MDPR (RM stream descriptor) headers plus
503 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
504 * buffer is large.
505 *
afcea58c
JA
506 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
507 * in rtpdec_xiph.c. */
373afbaf 508 char buf[16384], *q;
a92be9b8 509 SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state;
115329f1 510
1617ad97 511 p = content;
c8965800 512 for (;;) {
30619e6e 513 p += strspn(p, SPACE_CHARS);
1617ad97
FB
514 letter = *p;
515 if (letter == '\0')
516 break;
517 p++;
518 if (*p != '=')
519 goto next_line;
520 p++;
521 /* get the content */
522 q = buf;
b6892136 523 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
524 if ((q - buf) < sizeof(buf) - 1)
525 *q++ = *p;
526 p++;
527 }
528 *q = '\0';
93ced3e8 529 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
530 next_line:
531 while (*p != '\n' && *p != '\0')
532 p++;
533 if (*p == '\n')
534 p++;
535 }
a8475bbd
LB
536 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
537 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
538 return 0;
539}
44b70ce5 540#endif /* CONFIG_RTPDEC */
1617ad97 541
93e7490e
MS
542void ff_rtsp_undo_setup(AVFormatContext *s)
543{
544 RTSPState *rt = s->priv_data;
545 int i;
546
547 for (i = 0; i < rt->nb_rtsp_streams; i++) {
548 RTSPStream *rtsp_st = rt->rtsp_streams[i];
549 if (!rtsp_st)
550 continue;
551 if (rtsp_st->transport_priv) {
552 if (s->oformat) {
553 AVFormatContext *rtpctx = rtsp_st->transport_priv;
554 av_write_trailer(rtpctx);
555 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
556 uint8_t *ptr;
6dc7d80d 557 avio_close_dyn_buf(rtpctx->pb, &ptr);
93e7490e
MS
558 av_free(ptr);
559 } else {
22a3212e 560 avio_close(rtpctx->pb);
93e7490e 561 }
b22dbb29 562 avformat_free_context(rtpctx);
93e7490e
MS
563 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
564 ff_rdt_parse_close(rtsp_st->transport_priv);
565 else if (CONFIG_RTPDEC)
bfc6db44 566 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
567 }
568 rtsp_st->transport_priv = NULL;
569 if (rtsp_st->rtp_handle)
e52a9145 570 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
571 rtsp_st->rtp_handle = NULL;
572 }
573}
574
1ced9da3 575/* close and free RTSP streams */
3307e6ea 576void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 577{
52aa4338 578 RTSPState *rt = s->priv_data;
1ced9da3
LA
579 int i;
580 RTSPStream *rtsp_st;
581
93e7490e 582 ff_rtsp_undo_setup(s);
c8965800 583 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
584 rtsp_st = rt->rtsp_streams[i];
585 if (rtsp_st) {
1ced9da3 586 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
9261e6cf 587 rtsp_st->dynamic_handler->free(
c8965800 588 rtsp_st->dynamic_protocol_context);
ea7f0807 589 av_free(rtsp_st);
1ced9da3
LA
590 }
591 }
592 av_free(rt->rtsp_streams);
593 if (rt->asf_ctx) {
cd3716b9 594 avformat_close_input(&rt->asf_ctx);
1ced9da3 595 }
a8475bbd 596 av_free(rt->p);
96a7c975 597 av_free(rt->recvbuf);
1ced9da3
LA
598}
599
6e71c120 600int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
601{
602 RTSPState *rt = s->priv_data;
603 AVStream *st = NULL;
604
605 /* open the RTP context */
606 if (rtsp_st->stream_index >= 0)
607 st = s->streams[rtsp_st->stream_index];
608 if (!st)
609 s->ctx_flags |= AVFMTCTX_NOHEADER;
610
44b70ce5 611 if (s->oformat && CONFIG_RTSP_MUXER) {
68c81308
MS
612 int ret = ff_rtp_chain_mux_open(&rtsp_st->transport_priv, s, st,
613 rtsp_st->rtp_handle,
614 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 615 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 616 rtsp_st->rtp_handle = NULL;
68c81308
MS
617 if (ret < 0)
618 return ret;
44b70ce5 619 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
620 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
621 rtsp_st->dynamic_protocol_context,
622 rtsp_st->dynamic_handler);
44b70ce5 623 else if (CONFIG_RTPDEC)
bfc6db44 624 rtsp_st->transport_priv = ff_rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
625 rtsp_st->sdp_payload_type,
626 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
627 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
628
629 if (!rtsp_st->transport_priv) {
630 return AVERROR(ENOMEM);
44b70ce5 631 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 632 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
633 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
634 rtsp_st->dynamic_protocol_context,
635 rtsp_st->dynamic_handler);
1ced9da3
LA
636 }
637 }
638
639 return 0;
640}
641
6f5a3d0a 642#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
643static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
644{
ddce7dab
MR
645 const char *q;
646 char *p;
1617ad97
FB
647 int v;
648
ddce7dab
MR
649 q = *pp;
650 q += strspn(q, SPACE_CHARS);
651 v = strtol(q, &p, 10);
1617ad97
FB
652 if (*p == '-') {
653 p++;
654 *min_ptr = v;
ddce7dab 655 v = strtol(p, &p, 10);
1617ad97
FB
656 *max_ptr = v;
657 } else {
658 *min_ptr = v;
659 *max_ptr = v;
660 }
661 *pp = p;
662}
663
664/* XXX: only one transport specification is parsed */
a9e534d5 665static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
666{
667 char transport_protocol[16];
668 char profile[16];
669 char lower_transport[16];
670 char parameter[16];
671 RTSPTransportField *th;
672 char buf[256];
115329f1 673
1617ad97 674 reply->nb_transports = 0;
115329f1 675
c8965800 676 for (;;) {
30619e6e 677 p += strspn(p, SPACE_CHARS);
1617ad97
FB
678 if (*p == '\0')
679 break;
680
681 th = &reply->transports[reply->nb_transports];
682
115329f1 683 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 684 "/", &p);
bb3244de 685 if (!av_strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
686 get_word_sep(profile, sizeof(profile), "/;,", &p);
687 lower_transport[0] = '\0';
688 /* rtp/avp/<protocol> */
689 if (*p == '/') {
7ecc634e
LB
690 get_word_sep(lower_transport, sizeof(lower_transport),
691 ";,", &p);
119b4668
RB
692 }
693 th->transport = RTSP_TRANSPORT_RTP;
bb3244de
RD
694 } else if (!av_strcasecmp (transport_protocol, "x-pn-tng") ||
695 !av_strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 696 /* x-pn-tng/<protocol> */
e1502118
LB
697 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
698 profile[0] = '\0';
119b4668 699 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 700 }
bb3244de 701 if (!av_strcasecmp(lower_transport, "TCP"))
90abbdba 702 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 703 else
90abbdba 704 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 705
1617ad97
FB
706 if (*p == ';')
707 p++;
708 /* get each parameter */
709 while (*p != '\0' && *p != ',') {
710 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
711 if (!strcmp(parameter, "port")) {
712 if (*p == '=') {
713 p++;
714 rtsp_parse_range(&th->port_min, &th->port_max, &p);
715 }
716 } else if (!strcmp(parameter, "client_port")) {
717 if (*p == '=') {
718 p++;
115329f1 719 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
720 &th->client_port_max, &p);
721 }
722 } else if (!strcmp(parameter, "server_port")) {
723 if (*p == '=') {
724 p++;
115329f1 725 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
726 &th->server_port_max, &p);
727 }
728 } else if (!strcmp(parameter, "interleaved")) {
729 if (*p == '=') {
730 p++;
115329f1 731 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
732 &th->interleaved_max, &p);
733 }
734 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
735 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
736 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
737 } else if (!strcmp(parameter, "ttl")) {
738 if (*p == '=') {
739 p++;
740 th->ttl = strtol(p, (char **)&p, 10);
741 }
742 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
743 if (*p == '=') {
744 p++;
745 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 746 get_sockaddr(buf, &th->destination);
1617ad97 747 }
619298a8
JW
748 } else if (!strcmp(parameter, "source")) {
749 if (*p == '=') {
750 p++;
751 get_word_sep(buf, sizeof(buf), ";,", &p);
752 av_strlcpy(th->source, buf, sizeof(th->source));
753 }
45b06858
JO
754 } else if (!strcmp(parameter, "mode")) {
755 if (*p == '=') {
756 p++;
757 get_word_sep(buf, sizeof(buf), ";, ", &p);
758 if (!strcmp(buf, "record") ||
759 !strcmp(buf, "receive"))
760 th->mode_record = 1;
761 }
1617ad97 762 }
619298a8 763
1617ad97
FB
764 while (*p != ';' && *p != '\0' && *p != ',')
765 p++;
766 if (*p == ';')
767 p++;
768 }
769 if (*p == ',')
770 p++;
771
772 reply->nb_transports++;
773 }
774}
775
29db7c3a
MS
776static void handle_rtp_info(RTSPState *rt, const char *url,
777 uint32_t seq, uint32_t rtptime)
778{
779 int i;
780 if (!rtptime || !url[0])
781 return;
782 if (rt->transport != RTSP_TRANSPORT_RTP)
783 return;
784 for (i = 0; i < rt->nb_rtsp_streams; i++) {
785 RTSPStream *rtsp_st = rt->rtsp_streams[i];
786 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
787 if (!rtpctx)
788 continue;
789 if (!strcmp(rtsp_st->control_url, url)) {
790 rtpctx->base_timestamp = rtptime;
791 break;
792 }
793 }
794}
795
796static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
797{
798 int read = 0;
799 char key[20], value[1024], url[1024] = "";
800 uint32_t seq = 0, rtptime = 0;
801
802 for (;;) {
803 p += strspn(p, SPACE_CHARS);
804 if (!*p)
805 break;
806 get_word_sep(key, sizeof(key), "=", &p);
807 if (*p != '=')
808 break;
809 p++;
810 get_word_sep(value, sizeof(value), ";, ", &p);
811 read++;
812 if (!strcmp(key, "url"))
813 av_strlcpy(url, value, sizeof(url));
814 else if (!strcmp(key, "seq"))
4515f9b5 815 seq = strtoul(value, NULL, 10);
29db7c3a 816 else if (!strcmp(key, "rtptime"))
4515f9b5 817 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
818 if (*p == ',') {
819 handle_rtp_info(rt, url, seq, rtptime);
820 url[0] = '\0';
821 seq = rtptime = 0;
822 read = 0;
823 }
824 if (*p)
825 p++;
826 }
827 if (read > 0)
828 handle_rtp_info(rt, url, seq, rtptime);
829}
830
2626308a 831void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 832 RTSPState *rt, const char *method)
1617ad97
FB
833{
834 const char *p;
835
836 /* NOTE: we do case independent match for broken servers */
837 p = buf;
f7d78f36 838 if (av_stristart(p, "Session:", &p)) {
30e79845 839 int t;
1617ad97 840 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
841 if (av_stristart(p, ";timeout=", &p) &&
842 (t = strtol(p, NULL, 10)) > 0) {
843 reply->timeout = t;
844 }
f7d78f36 845 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 846 reply->content_length = strtol(p, NULL, 10);
f7d78f36 847 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 848 rtsp_parse_transport(reply, p);
f7d78f36 849 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 850 reply->seq = strtol(p, NULL, 10);
f7d78f36 851 } else if (av_stristart(p, "Range:", &p)) {
31693e00 852 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 853 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 854 p += strspn(p, SPACE_CHARS);
30aa6aed 855 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 856 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 857 p += strspn(p, SPACE_CHARS);
7a86bafa 858 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
859 } else if (av_stristart(p, "Notice:", &p) ||
860 av_stristart(p, "X-Notice:", &p)) {
861 reply->notice = strtol(p, NULL, 10);
d243ba30 862 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 863 p += strspn(p, SPACE_CHARS);
d243ba30 864 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 865 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 866 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
867 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
868 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 869 p += strspn(p, SPACE_CHARS);
acc9ed14 870 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 871 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 872 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
873 if (method && !strcmp(method, "DESCRIBE"))
874 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
875 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
876 p += strspn(p, SPACE_CHARS);
877 if (method && !strcmp(method, "PLAY"))
878 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
879 } else if (av_stristart(p, "Public:", &p) && rt) {
880 if (strstr(p, "GET_PARAMETER") &&
881 method && !strcmp(method, "OPTIONS"))
882 rt->get_parameter_supported = 1;
30eae325
MS
883 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
884 p += strspn(p, SPACE_CHARS);
885 rt->accept_dynamic_rate = atoi(p);
fcd0298c
JO
886 } else if (av_stristart(p, "Content-Type:", &p)) {
887 p += strspn(p, SPACE_CHARS);
888 av_strlcpy(reply->content_type, p, sizeof(reply->content_type));
1617ad97
FB
889 }
890}
891
b7b8fc34 892/* skip a RTP/TCP interleaved packet */
ec55edba 893void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
894{
895 RTSPState *rt = s->priv_data;
896 int ret, len, len1;
897 uint8_t buf[1024];
898
dce37564 899 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
900 if (ret != 3)
901 return;
80fb8234 902 len = AV_RB16(buf + 1);
67c9cd69 903
dfd2a005 904 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 905
b7b8fc34
FB
906 /* skip payload */
907 while (len > 0) {
908 len1 = len;
909 if (len1 > sizeof(buf))
910 len1 = sizeof(buf);
dce37564 911 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
912 if (ret != len1)
913 return;
914 len -= len1;
915 }
916}
1617ad97 917
3307e6ea 918int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 919 unsigned char **content_ptr,
3df54c6b 920 int return_on_interleaved_data, const char *method)
1617ad97
FB
921{
922 RTSPState *rt = s->priv_data;
923 char buf[4096], buf1[1024], *q;
924 unsigned char ch;
925 const char *p;
1a6b9a98 926 int ret, content_length, line_count = 0, request = 0;
1617ad97
FB
927 unsigned char *content = NULL;
928
1a6b9a98
TW
929start:
930 line_count = 0;
931 request = 0;
932 content = NULL;
d541a7d2 933 memset(reply, 0, sizeof(*reply));
1617ad97 934
1617ad97 935 /* parse reply (XXX: use buffers) */
1617ad97 936 rt->last_reply[0] = '\0';
c8965800 937 for (;;) {
1617ad97 938 q = buf;
c8965800 939 for (;;) {
dce37564 940 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
dfd2a005 941 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 942 if (ret != 1)
2401660d 943 return AVERROR_EOF;
1617ad97
FB
944 if (ch == '\n')
945 break;
b7b8fc34
FB
946 if (ch == '$') {
947 /* XXX: only parse it if first char on line ? */
7e726132
RB
948 if (return_on_interleaved_data) {
949 return 1;
950 } else
ec55edba 951 ff_rtsp_skip_packet(s);
b7b8fc34 952 } else if (ch != '\r') {
1617ad97
FB
953 if ((q - buf) < sizeof(buf) - 1)
954 *q++ = ch;
955 }
956 }
957 *q = '\0';
67c9cd69 958
dfd2a005 959 av_dlog(s, "line='%s'\n", buf);
67c9cd69 960
1617ad97
FB
961 /* test if last line */
962 if (buf[0] == '\0')
963 break;
964 p = buf;
965 if (line_count == 0) {
966 /* get reply code */
967 get_word(buf1, sizeof(buf1), &p);
1a6b9a98
TW
968 if (!strncmp(buf1, "RTSP/", 5)) {
969 get_word(buf1, sizeof(buf1), &p);
970 reply->status_code = atoi(buf1);
971 av_strlcpy(reply->reason, p, sizeof(reply->reason));
972 } else {
973 av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method
974 get_word(buf1, sizeof(buf1), &p); // object
975 request = 1;
976 }
1617ad97 977 } else {
77223c53 978 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
979 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
980 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
981 }
982 line_count++;
983 }
115329f1 984
1a6b9a98 985 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0' && !request)
75e61b0e 986 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 987
1617ad97
FB
988 content_length = reply->content_length;
989 if (content_length > 0) {
990 /* leave some room for a trailing '\0' (useful for simple parsing) */
991 content = av_malloc(content_length + 1);
dce37564 992 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
993 content[content_length] = '\0';
994 }
995 if (content_ptr)
996 *content_ptr = content;
e2e2e7dd
AB
997 else
998 av_free(content);
7e726132 999
1a6b9a98
TW
1000 if (request) {
1001 char buf[1024];
1002 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1003 const char* ptr = buf;
1004
1005 if (!strcmp(reply->reason, "OPTIONS")) {
1006 snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n");
1007 if (reply->seq)
1008 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq);
1009 if (reply->session_id[0])
1010 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n",
1011 reply->session_id);
1012 } else {
1013 snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n");
1014 }
1015 av_strlcat(buf, "\r\n", sizeof(buf));
1016
1017 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1018 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1019 ptr = base64buf;
1020 }
1021 ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr));
1022
1023 rt->last_cmd_time = av_gettime();
1024 /* Even if the request from the server had data, it is not the data
1025 * that the caller wants or expects. The memory could also be leaked
1026 * if the actual following reply has content data. */
1027 if (content_ptr)
1028 av_freep(content_ptr);
1029 /* If method is set, this is called from ff_rtsp_send_cmd,
1030 * where a reply to exactly this request is awaited. For
705eeb5e 1031 * callers from within packet receiving, we just want to
1a6b9a98
TW
1032 * return to the caller and go back to receiving packets. */
1033 if (method)
1034 goto start;
1035 return 0;
1036 }
1037
7ed8211b
LB
1038 if (rt->seq != reply->seq) {
1039 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
1040 rt->seq, reply->seq);
1041 }
1042
fccb1770
RB
1043 /* EOS */
1044 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
1045 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 1046 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 1047 rt->state = RTSP_STATE_IDLE;
c8965800 1048 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 1049 return AVERROR(EIO); /* data or server error */
c8965800 1050 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
1051 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
1052 return AVERROR(EPERM);
1053
7e726132 1054 return 0;
1617ad97
FB
1055}
1056
57c4d01e
DEP
1057/**
1058 * Send a command to the RTSP server without waiting for the reply.
1059 *
1060 * @param s RTSP (de)muxer context
1061 * @param method the method for the request
1062 * @param url the target url for the request
1063 * @param headers extra header lines to include in the request
1064 * @param send_content if non-null, the data to send as request body content
1065 * @param send_content_length the length of the send_content data, or 0 if
1066 * send_content is null
1067 *
1068 * @return zero if success, nonzero otherwise
1069 */
1070static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
1071 const char *method, const char *url,
1072 const char *headers,
1073 const unsigned char *send_content,
1074 int send_content_length)
29b9f58b
RB
1075{
1076 RTSPState *rt = s->priv_data;
f5d33f52
JA
1077 char buf[4096], *out_buf;
1078 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 1079
f5d33f52
JA
1080 /* Add in RTSP headers */
1081 out_buf = buf;
29b9f58b 1082 rt->seq++;
b17d11c6
MS
1083 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1084 if (headers)
1085 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1086 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
1087 if (rt->session_id[0] != '\0' && (!headers ||
1088 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1089 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1090 }
aa8bf2fb
MS
1091 if (rt->auth[0]) {
1092 char *str = ff_http_auth_create_response(&rt->auth_state,
1093 rt->auth, url, method);
1094 if (str)
1095 av_strlcat(buf, str, sizeof(buf));
1096 av_free(str);
1097 }
dfd017bf
MS
1098 if (send_content_length > 0 && send_content)
1099 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1100 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1101
f5d33f52
JA
1102 /* base64 encode rtsp if tunneling */
1103 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1104 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1105 out_buf = base64buf;
1106 }
1107
dfd2a005 1108 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 1109
925e908b 1110 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
1111 if (send_content_length > 0 && send_content) {
1112 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1113 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1114 "with content data not supported\n");
1115 return AVERROR_PATCHWELCOME;
1116 }
925e908b 1117 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1118 }
30e79845 1119 rt->last_cmd_time = av_gettime();
d0382374
JA
1120
1121 return 0;
30e79845
RB
1122}
1123
d0382374 1124int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1125 const char *url, const char *headers)
dfd017bf 1126{
d0382374 1127 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1128}
1129
d0382374 1130int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1131 const char *headers, RTSPMessageHeader *reply,
1132 unsigned char **content_ptr)
30e79845 1133{
d0382374 1134 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1135 content_ptr, NULL, 0);
29b9f58b
RB
1136}
1137
d0382374 1138int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1139 const char *method, const char *url,
1140 const char *header,
1141 RTSPMessageHeader *reply,
1142 unsigned char **content_ptr,
1143 const unsigned char *send_content,
1144 int send_content_length)
dfd017bf 1145{
30af0779
MS
1146 RTSPState *rt = s->priv_data;
1147 HTTPAuthType cur_auth_type;
2f96cc1f 1148 int ret, attempts = 0;
30af0779
MS
1149
1150retry:
1151 cur_auth_type = rt->auth_state.auth_type;
d0382374 1152 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1153 send_content,
1154 send_content_length)))
d0382374 1155 return ret;
dfd017bf 1156
3df54c6b 1157 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1158 return ret;
2f96cc1f 1159 attempts++;
30af0779 1160
2f96cc1f
MS
1161 if (reply->status_code == 401 &&
1162 (cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) &&
1163 rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2)
30af0779 1164 goto retry;
d0382374 1165
bf55cf19 1166 if (reply->status_code > 400){
d93fdcbf 1167 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1168 method,
d93fdcbf
LB
1169 reply->status_code,
1170 reply->reason);
bf55cf19
LB
1171 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1172 }
1173
d0382374 1174 return 0;
dfd017bf
MS
1175}
1176
fef5649a 1177int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1178 int lower_transport, const char *real_challenge)
1617ad97
FB
1179{
1180 RTSPState *rt = s->priv_data;
58f09785 1181 int rtx = 0, j, i, err, interleave = 0, port_off;
1617ad97 1182 RTSPStream *rtsp_st;
a9e534d5 1183 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1184 char cmd[2048];
e9dea59f
RB
1185 const char *trans_pref;
1186
119b4668 1187 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1188 trans_pref = "x-pn-tng";
1189 else
1190 trans_pref = "RTP/AVP";
115329f1 1191
30e79845
RB
1192 /* default timeout: 1 minute */
1193 rt->timeout = 60;
1194
1617ad97
FB
1195 /* for each stream, make the setup request */
1196 /* XXX: we assume the same server is used for the control of each
c8965800 1197 * RTSP stream */
d1ccf0e0 1198
58f09785
DV
1199 /* Choose a random starting offset within the first half of the
1200 * port range, to allow for a number of ports to try even if the offset
1201 * happens to be at the end of the random range. */
1202 port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2);
1203 /* even random offset */
1204 port_off -= port_off & 0x01;
1205
1206 for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1207 char transport[2048];
1208
f75e3da5 1209 /*
f830c9a4
RB
1210 * WMS serves all UDP data over a single connection, the RTX, which
1211 * isn't necessarily the first in the SDP but has to be the first
1212 * to be set up, else the second/third SETUP will fail with a 461.
1213 */
1214 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1215 rt->server_type == RTSP_SERVER_WMS) {
1216 if (i == 0) {
1217 /* rtx first */
1218 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1219 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1220 if (len >= 4 &&
c8965800
RB
1221 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1222 "/rtx"))
f830c9a4
RB
1223 break;
1224 }
1225 if (rtx == rt->nb_rtsp_streams)
1226 return -1; /* no RTX found */
1227 rtsp_st = rt->rtsp_streams[rtx];
1228 } else
1229 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1230 } else
2fea9650 1231 rtsp_st = rt->rtsp_streams[i];
1617ad97 1232
1617ad97 1233 /* RTP/UDP */
90abbdba 1234 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1235 char buf[256];
85fb7b34 1236
f830c9a4
RB
1237 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1238 port = reply->transports[0].client_port_min;
1239 goto have_port;
1240 }
1241
85fb7b34 1242 /* first try in specified port range */
dbb06b8c 1243 while (j <= rt->rtp_port_max) {
bc495bad
DV
1244 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1245 "?localport=%d", j);
1246 /* we will use two ports per rtp stream (rtp and rtcp) */
1247 j += 2;
1248 if (!ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
1249 &s->interrupt_callback, NULL))
1250 goto rtp_opened;
1617ad97 1251 }
85fb7b34 1252
a3b058b7
MS
1253 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1254 err = AVERROR(EIO);
1255 goto fail;
85fb7b34
FB
1256
1257 rtp_opened:
bfc6db44 1258 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1259 have_port:
0ad306bc 1260 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1261 "%s/UDP;", trans_pref);
1262 if (rt->server_type != RTSP_SERVER_REAL)
1263 av_strlcat(transport, "unicast;", sizeof(transport));
1264 av_strlcatf(transport, sizeof(transport),
1265 "client_port=%d", port);
f830c9a4
RB
1266 if (rt->transport == RTSP_TRANSPORT_RTP &&
1267 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1268 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1269 }
1270
1271 /* RTP/TCP */
90abbdba 1272 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1273 /* For WMS streams, the application streams are only used for
090438cc
RB
1274 * UDP. When trying to set it up for TCP streams, the server
1275 * will return an error. Therefore, we skip those streams. */
1276 if (rt->server_type == RTSP_SERVER_WMS &&
45600148
MS
1277 (rtsp_st->stream_index < 0 ||
1278 s->streams[rtsp_st->stream_index]->codec->codec_type ==
1279 AVMEDIA_TYPE_DATA))
090438cc 1280 continue;
0ad306bc 1281 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1282 "%s/TCP;", trans_pref);
895678f8 1283 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1284 av_strlcat(transport, "unicast;", sizeof(transport));
1285 av_strlcatf(transport, sizeof(transport),
1286 "interleaved=%d-%d",
1287 interleave, interleave + 1);
1288 interleave += 2;
1617ad97
FB
1289 }
1290
90abbdba 1291 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1292 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1293 "%s/UDP;multicast", trans_pref);
1617ad97 1294 }
69adcc4f 1295 if (s->oformat) {
bbc80386 1296 av_strlcat(transport, ";mode=record", sizeof(transport));
69adcc4f 1297 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1298 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1299 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1300 snprintf(cmd, sizeof(cmd),
b6892136 1301 "Transport: %s\r\n",
b17d11c6 1302 transport);
76b0d03d
MS
1303 if (rt->accept_dynamic_rate)
1304 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
44b70ce5 1305 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1306 char real_res[41], real_csum[9];
1307 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1308 real_challenge);
1309 av_strlcatf(cmd, sizeof(cmd),
1310 "If-Match: %s\r\n"
1311 "RealChallenge2: %s, sd=%s\r\n",
1312 rt->session_id, real_res, real_csum);
1313 }
b17d11c6 1314 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1315 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1316 err = 1;
1317 goto fail;
7e6ca34f
RB
1318 } else if (reply->status_code != RTSP_STATUS_OK ||
1319 reply->nb_transports != 1) {
1617ad97
FB
1320 err = AVERROR_INVALIDDATA;
1321 goto fail;
1322 }
1323
1324 /* XXX: same protocol for all streams is required */
1325 if (i > 0) {
119b4668
RB
1326 if (reply->transports[0].lower_transport != rt->lower_transport ||
1327 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1328 err = AVERROR_INVALIDDATA;
1329 goto fail;
1330 }
1331 } else {
90abbdba 1332 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1333 rt->transport = reply->transports[0].transport;
1617ad97
FB
1334 }
1335
8c579c1c
MS
1336 /* Fail if the server responded with another lower transport mode
1337 * than what we requested. */
1338 if (reply->transports[0].lower_transport != lower_transport) {
1339 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1340 err = AVERROR_INVALIDDATA;
1341 goto fail;
1617ad97
FB
1342 }
1343
90abbdba
RB
1344 switch(reply->transports[0].lower_transport) {
1345 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1346 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1347 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1348 break;
115329f1 1349
c8965800 1350 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1351 char url[1024], options[30] = "";
c8965800 1352
9867aea5 1353 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
a92c30d7 1354 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1355 /* Use source address if specified */
1356 if (reply->transports[0].source[0]) {
1357 ff_url_join(url, sizeof(url), "rtp", NULL,
1358 reply->transports[0].source,
d8407339 1359 reply->transports[0].server_port_min, "%s", options);
619298a8 1360 } else {
7bac991f 1361 ff_url_join(url, sizeof(url), "rtp", NULL, host,
d8407339 1362 reply->transports[0].server_port_min, "%s", options);
619298a8 1363 }
c8965800 1364 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1365 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1366 err = AVERROR_INVALIDDATA;
1367 goto fail;
1617ad97 1368 }
9c8fa20d
MS
1369 /* Try to initialize the connection state in a
1370 * potential NAT router by sending dummy packets.
1371 * RTP/RTCP dummy packets are used for RDT, too.
1372 */
44b70ce5
MS
1373 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1374 CONFIG_RTPDEC)
bfc6db44 1375 ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1376 break;
c8965800
RB
1377 }
1378 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
6294d708 1379 char url[1024], namebuf[50], optbuf[20] = "";
7934b15d 1380 struct sockaddr_storage addr;
c8965800
RB
1381 int port, ttl;
1382
7934b15d
MS
1383 if (reply->transports[0].destination.ss_family) {
1384 addr = reply->transports[0].destination;
c8965800
RB
1385 port = reply->transports[0].port_min;
1386 ttl = reply->transports[0].ttl;
1387 } else {
7934b15d 1388 addr = rtsp_st->sdp_ip;
c8965800
RB
1389 port = rtsp_st->sdp_port;
1390 ttl = rtsp_st->sdp_ttl;
1391 }
6294d708
MS
1392 if (ttl > 0)
1393 snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
7934b15d
MS
1394 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1395 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1396 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
6294d708 1397 port, "%s", optbuf);
6f1b7b39 1398 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1399 &s->interrupt_callback, NULL) < 0) {
c8965800
RB
1400 err = AVERROR_INVALIDDATA;
1401 goto fail;
1617ad97
FB
1402 }
1403 break;
1404 }
c8965800 1405 }
d1ccf0e0 1406
6e71c120 1407 if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1408 goto fail;
1617ad97
FB
1409 }
1410
62c3c8ca 1411 if (rt->nb_rtsp_streams && reply->timeout > 0)
30e79845
RB
1412 rt->timeout = reply->timeout;
1413
2e889ae4 1414 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1415 rt->need_subscription = 1;
1416
53620bba
RB
1417 return 0;
1418
1419fail:
aeb2de1c 1420 ff_rtsp_undo_setup(s);
53620bba
RB
1421 return err;
1422}
1423
b8c2c41d
JA
1424void ff_rtsp_close_connections(AVFormatContext *s)
1425{
1426 RTSPState *rt = s->priv_data;
e52a9145
AK
1427 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1428 ffurl_close(rt->rtsp_hd);
6217b645 1429 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1430}
1431
3307e6ea 1432int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1433{
1434 RTSPState *rt = s->priv_data;
921da217 1435 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
03f8fc08 1436 int port, err, tcp_fd;
354b7573 1437 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1438 int lower_transport_mask = 0;
2762a7a2 1439 char real_challenge[64] = "";
03f8fc08
MS
1440 struct sockaddr_storage peer;
1441 socklen_t peer_len = sizeof(peer);
57b5555c 1442
dbb06b8c
MS
1443 if (rt->rtp_port_max < rt->rtp_port_min) {
1444 av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1445 "than min port %d\n", rt->rtp_port_max,
1446 rt->rtp_port_min);
1447 return AVERROR(EINVAL);
1448 }
1449
57b5555c
MS
1450 if (!ff_network_init())
1451 return AVERROR(EIO);
eca4850c 1452
4fa57d52 1453 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1454 s->max_delay = s->iformat ? DEFAULT_REORDERING_DELAY : 0;
4fa57d52 1455
f5d33f52 1456 rt->control_transport = RTSP_MODE_PLAIN;
eca4850c
MS
1457 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1458 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1459 rt->control_transport = RTSP_MODE_TUNNEL;
1460 }
1461 /* Only pass through valid flags from here */
1462 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
eca4850c
MS
1463
1464redirect:
1465 lower_transport_mask = rt->lower_transport_mask;
53620bba 1466 /* extract hostname and port */
f3bfe388 1467 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1468 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1469 if (*auth) {
aa8bf2fb 1470 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1471 }
53620bba
RB
1472 if (port < 0)
1473 port = RTSP_DEFAULT_PORT;
1474
90abbdba 1475 if (!lower_transport_mask)
2a1d51c5 1476 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1477
3e24c770 1478 if (s->oformat) {
b7dc88fc
MS
1479 /* Only UDP or TCP - UDP multicast isn't supported. */
1480 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1481 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1482 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1483 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1484 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1485 err = AVERROR(EINVAL);
1486 goto fail;
1487 }
1488 }
1489
4bc5cc23
MS
1490 /* Construct the URI used in request; this is similar to s->filename,
1491 * but with authentication credentials removed and RTSP specific options
1492 * stripped out. */
1493 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1494 host, port, "%s", path);
1495
f5d33f52
JA
1496 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1497 /* set up initial handshake for tunneling */
1498 char httpname[1024];
1499 char sessioncookie[17];
1500 char headers[1024];
1501
10ed37b5 1502 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1503 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1504 av_get_random_seed(), av_get_random_seed());
1505
1506 /* GET requests */
6f1b7b39
MS
1507 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1508 &s->interrupt_callback) < 0) {
f5d33f52
JA
1509 err = AVERROR(EIO);
1510 goto fail;
1511 }
1512
1513 /* generate GET headers */
1514 snprintf(headers, sizeof(headers),
1515 "x-sessioncookie: %s\r\n"
1516 "Accept: application/x-rtsp-tunnelled\r\n"
1517 "Pragma: no-cache\r\n"
1518 "Cache-Control: no-cache\r\n",
1519 sessioncookie);
196bf28c 1520 av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
f5d33f52
JA
1521
1522 /* complete the connection */
ddffc2fd 1523 if (ffurl_connect(rt->rtsp_hd, NULL)) {
f5d33f52
JA
1524 err = AVERROR(EIO);
1525 goto fail;
1526 }
1527
1528 /* POST requests */
6f1b7b39
MS
1529 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
1530 &s->interrupt_callback) < 0 ) {
f5d33f52
JA
1531 err = AVERROR(EIO);
1532 goto fail;
1533 }
1534
1535 /* generate POST headers */
1536 snprintf(headers, sizeof(headers),
1537 "x-sessioncookie: %s\r\n"
1538 "Content-Type: application/x-rtsp-tunnelled\r\n"
1539 "Pragma: no-cache\r\n"
1540 "Cache-Control: no-cache\r\n"
1541 "Content-Length: 32767\r\n"
1542 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1543 sessioncookie);
196bf28c 1544 av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
6149485f 1545 av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
f5d33f52 1546
a8ead332
MS
1547 /* Initialize the authentication state for the POST session. The HTTP
1548 * protocol implementation doesn't properly handle multi-pass
1549 * authentication for POST requests, since it would require one of
1550 * the following:
1551 * - implementing Expect: 100-continue, which many HTTP servers
1552 * don't support anyway, even less the RTSP servers that do HTTP
1553 * tunneling
1554 * - sending the whole POST data until getting a 401 reply specifying
1555 * what authentication method to use, then resending all that data
1556 * - waiting for potential 401 replies directly after sending the
1557 * POST header (waiting for some unspecified time)
1558 * Therefore, we copy the full auth state, which works for both basic
1559 * and digest. (For digest, we would have to synchronize the nonce
1560 * count variable between the two sessions, if we'd do more requests
1561 * with the original session, though.)
1562 */
1563 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1564
9290f15d 1565 /* complete the connection */
ddffc2fd 1566 if (ffurl_connect(rt->rtsp_hd_out, NULL)) {
9290f15d
MS
1567 err = AVERROR(EIO);
1568 goto fail;
1569 }
f5d33f52 1570 } else {
48e77473 1571 /* open the tcp connection */
41874d0a 1572 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
6f1b7b39 1573 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
ddffc2fd 1574 &s->interrupt_callback, NULL) < 0) {
41874d0a
JA
1575 err = AVERROR(EIO);
1576 goto fail;
1577 }
00e4a1f4 1578 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1579 }
53620bba
RB
1580 rt->seq = 0;
1581
1869ea03 1582 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1583 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1584 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1585 NULL, 0, NI_NUMERICHOST);
1586 }
1587
c8965800
RB
1588 /* request options supported by the server; this also detects server
1589 * type */
1cf151e9 1590 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1591 cmd[0] = 0;
2e889ae4 1592 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1593 av_strlcat(cmd,
f75e3da5 1594 /*
1cf151e9
RB
1595 * The following entries are required for proper
1596 * streaming from a Realmedia server. They are
1597 * interdependent in some way although we currently
1598 * don't quite understand how. Values were copied
1599 * from mplayer SVN r23589.
f75e3da5
DB
1600 * ClientChallenge is a 16-byte ID in hex
1601 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1602 */
1603 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1604 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1605 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1606 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1607 sizeof(cmd));
b17d11c6 1608 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1609 if (reply->status_code != RTSP_STATUS_OK) {
1610 err = AVERROR_INVALIDDATA;
1611 goto fail;
1612 }
1613
1614 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1615 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1616 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1617 continue;
bb3244de 1618 } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
7a86bafa 1619 rt->server_type = RTSP_SERVER_WMS;
c8965800 1620 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1621 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1622 break;
1623 }
1624
44b70ce5 1625 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1626 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1627 else if (CONFIG_RTSP_MUXER)
c2688f3a 1628 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1629 if (err)
53620bba 1630 goto fail;
53620bba 1631
8a8754d8 1632 do {
c8965800
RB
1633 int lower_transport = ff_log2_tab[lower_transport_mask &
1634 ~(lower_transport_mask - 1)];
8a8754d8 1635
fef5649a 1636 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1637 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1638 real_challenge : NULL);
8a8754d8 1639 if (err < 0)
7e6ca34f 1640 goto fail;
90abbdba
RB
1641 lower_transport_mask &= ~(1 << lower_transport);
1642 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1643 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1644 goto fail;
1645 }
1646 } while (err);
53620bba 1647
2762a7a2
MS
1648 rt->lower_transport_mask = lower_transport_mask;
1649 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1650 rt->state = RTSP_STATE_IDLE;
c8965800 1651 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1652 return 0;
1653 fail:
3307e6ea 1654 ff_rtsp_close_streams(s);
b8c2c41d 1655 ff_rtsp_close_connections(s);
35cfd646 1656 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1657 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1658 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1659 reply->status_code,
1660 s->filename);
1661 goto redirect;
1662 }
57b5555c 1663 ff_network_close();
1617ad97
FB
1664 return err;
1665}
2e802e38 1666#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1667
44b70ce5 1668#if CONFIG_RTPDEC
0e59034e 1669static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1670 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1671{
1672 RTSPState *rt = s->priv_data;
1673 RTSPStream *rtsp_st;
a8475bbd
LB
1674 int n, i, ret, tcp_fd, timeout_cnt = 0;
1675 int max_p = 0;
1676 struct pollfd *p = rt->p;
0e59034e 1677
c8965800 1678 for (;;) {
9957cdbf 1679 if (ff_check_interrupt(&s->interrupt_callback))
c76374c6 1680 return AVERROR_EXIT;
321259c1
MS
1681 if (wait_end && wait_end - av_gettime() < 0)
1682 return AVERROR(EAGAIN);
a8475bbd 1683 max_p = 0;
0e59034e 1684 if (rt->rtsp_hd) {
1869ea03 1685 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1686 p[max_p].fd = tcp_fd;
1687 p[max_p++].events = POLLIN;
0e59034e 1688 } else {
0e59034e
RB
1689 tcp_fd = -1;
1690 }
c8965800 1691 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1692 rtsp_st = rt->rtsp_streams[i];
1693 if (rtsp_st->rtp_handle) {
1869ea03 1694 p[max_p].fd = ffurl_get_file_handle(rtsp_st->rtp_handle);
a8475bbd 1695 p[max_p++].events = POLLIN;
bfc6db44 1696 p[max_p].fd = ff_rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
a8475bbd 1697 p[max_p++].events = POLLIN;
0e59034e
RB
1698 }
1699 }
a8475bbd 1700 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1701 if (n > 0) {
a8475bbd 1702 int j = 1 - (tcp_fd == -1);
9cba6f5f 1703 timeout_cnt = 0;
c8965800 1704 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1705 rtsp_st = rt->rtsp_streams[i];
1706 if (rtsp_st->rtp_handle) {
a8475bbd 1707 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1708 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1709 if (ret > 0) {
1710 *prtsp_st = rtsp_st;
1711 return ret;
1712 }
1713 }
a8475bbd 1714 j+=2;
0e59034e
RB
1715 }
1716 }
5fe8021a 1717#if CONFIG_RTSP_DEMUXER
a8475bbd 1718 if (tcp_fd != -1 && p[0].revents & POLLIN) {
a8ad6ffa
JO
1719 if (rt->rtsp_flags & RTSP_FLAG_LISTEN) {
1720 if (rt->state == RTSP_STATE_STREAMING) {
1721 if (!ff_rtsp_parse_streaming_commands(s))
1722 return AVERROR_EOF;
1723 else
1724 av_log(s, AV_LOG_WARNING,
1725 "Unable to answer to TEARDOWN\n");
1726 } else
1727 return 0;
1728 } else {
1729 RTSPMessageHeader reply;
1730 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
1731 if (ret < 0)
1732 return ret;
1733 /* XXX: parse message */
1734 if (rt->state != RTSP_STATE_STREAMING)
1735 return 0;
1736 }
0e59034e 1737 }
5fe8021a 1738#endif
9cba6f5f 1739 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1740 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1741 } else if (n < 0 && errno != EINTR)
1742 return AVERROR(errno);
0e59034e
RB
1743 }
1744}
1745
0526c6f7 1746int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1747{
1748 RTSPState *rt = s->priv_data;
1749 int ret, len;
321259c1
MS
1750 RTSPStream *rtsp_st, *first_queue_st = NULL;
1751 int64_t wait_end = 0;
0e59034e 1752
b20359f5
JA
1753 if (rt->nb_byes == rt->nb_rtsp_streams)
1754 return AVERROR_EOF;
1755
0e59034e
RB
1756 /* get next frames from the same RTP packet */
1757 if (rt->cur_transport_priv) {
c8965800 1758 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1759 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1760 } else
bfc6db44 1761 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
0e59034e
RB
1762 if (ret == 0) {
1763 rt->cur_transport_priv = NULL;
1764 return 0;
1765 } else if (ret == 1) {
1766 return 0;
c8965800 1767 } else
0e59034e 1768 rt->cur_transport_priv = NULL;
0e59034e
RB
1769 }
1770
321259c1
MS
1771 if (rt->transport == RTSP_TRANSPORT_RTP) {
1772 int i;
1773 int64_t first_queue_time = 0;
1774 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1775 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1776 int64_t queue_time;
1777 if (!rtpctx)
1778 continue;
1779 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1780 if (queue_time && (queue_time - first_queue_time < 0 ||
1781 !first_queue_time)) {
1782 first_queue_time = queue_time;
1783 first_queue_st = rt->rtsp_streams[i];
1784 }
1785 }
1786 if (first_queue_time)
1787 wait_end = first_queue_time + s->max_delay;
1788 }
1789
0e59034e
RB
1790 /* read next RTP packet */
1791 redo:
96a7c975
MS
1792 if (!rt->recvbuf) {
1793 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1794 if (!rt->recvbuf)
1795 return AVERROR(ENOMEM);
1796 }
1797
0e59034e
RB
1798 switch(rt->lower_transport) {
1799 default:
5fe8021a 1800#if CONFIG_RTSP_DEMUXER
0e59034e 1801 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1802 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1803 break;
5fe8021a 1804#endif
0e59034e
RB
1805 case RTSP_LOWER_TRANSPORT_UDP:
1806 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1807 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1808 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
bfc6db44 1809 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
0e59034e
RB
1810 break;
1811 }
321259c1
MS
1812 if (len == AVERROR(EAGAIN) && first_queue_st &&
1813 rt->transport == RTSP_TRANSPORT_RTP) {
1814 rtsp_st = first_queue_st;
bfc6db44 1815 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
1816 goto end;
1817 }
0e59034e
RB
1818 if (len < 0)
1819 return len;
1820 if (len == 0)
1821 return AVERROR_EOF;
c8965800 1822 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1823 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1824 } else {
bfc6db44 1825 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1826 if (ret < 0) {
1827 /* Either bad packet, or a RTCP packet. Check if the
1828 * first_rtcp_ntp_time field was initialized. */
1829 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1830 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1831 /* first_rtcp_ntp_time has been initialized for this stream,
1832 * copy the same value to all other uninitialized streams,
1833 * in order to map their timestamp origin to the same ntp time
1834 * as this one. */
1835 int i;
3a1cdcc7
MS
1836 AVStream *st = NULL;
1837 if (rtsp_st->stream_index >= 0)
1838 st = s->streams[rtsp_st->stream_index];
2cab6b48 1839 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1840 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1841 AVStream *st2 = NULL;
1842 if (rt->rtsp_streams[i]->stream_index >= 0)
1843 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1844 if (rtpctx2 && st && st2 &&
1845 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1846 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1847 rtpctx2->rtcp_ts_offset = av_rescale_q(
1848 rtpctx->rtcp_ts_offset, st->time_base,
1849 st2->time_base);
1850 }
2cab6b48
MS
1851 }
1852 }
b20359f5
JA
1853 if (ret == -RTCP_BYE) {
1854 rt->nb_byes++;
1855
1856 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1857 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1858
1859 if (rt->nb_byes == rt->nb_rtsp_streams)
1860 return AVERROR_EOF;
1861 }
2cab6b48
MS
1862 }
1863 }
321259c1 1864end:
0e59034e
RB
1865 if (ret < 0)
1866 goto redo;
c8965800 1867 if (ret == 1)
0e59034e
RB
1868 /* more packets may follow, so we save the RTP context */
1869 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1870
1871 return ret;
1872}
44b70ce5 1873#endif /* CONFIG_RTPDEC */
0e59034e 1874
44b70ce5 1875#if CONFIG_SDP_DEMUXER
cb1fdc61 1876static int sdp_probe(AVProbeData *p1)
93ced3e8 1877{
0e1ceacd 1878 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1879
3fbd12d1 1880 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1881 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1882 if (p + sizeof("c=IN IP") - 1 < p_end &&
1883 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1884 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1885
c8965800 1886 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1887 if (++p >= p_end)
cb1fdc61 1888 break;
cb1fdc61
FB
1889 if (*p == '\r')
1890 p++;
1891 }
93ced3e8
FB
1892 return 0;
1893}
1894
6e9651d1 1895static int sdp_read_header(AVFormatContext *s)
93ced3e8 1896{
8b1ab7bf 1897 RTSPState *rt = s->priv_data;
93ced3e8
FB
1898 RTSPStream *rtsp_st;
1899 int size, i, err;
1900 char *content;
1901 char url[1024];
1902
57b5555c
MS
1903 if (!ff_network_init())
1904 return AVERROR(EIO);
1905
4fa57d52 1906 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1907 s->max_delay = DEFAULT_REORDERING_DELAY;
4fa57d52 1908
93ced3e8
FB
1909 /* read the whole sdp file */
1910 /* XXX: better loading */
1911 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 1912 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1913 if (size <= 0) {
1914 av_free(content);
1915 return AVERROR_INVALIDDATA;
1916 }
1917 content[size] ='\0';
1918
f81c7ac7 1919 err = ff_sdp_parse(s, content);
93ced3e8 1920 av_free(content);
f81c7ac7 1921 if (err) goto fail;
93ced3e8
FB
1922
1923 /* open each RTP stream */
c8965800 1924 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1925 char namebuf[50];
8b1ab7bf 1926 rtsp_st = rt->rtsp_streams[i];
115329f1 1927
3fbd12d1
MS
1928 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1929 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1930 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1931 namebuf, rtsp_st->sdp_port,
51369f28
MS
1932 "?localport=%d&ttl=%d&connect=%d", rtsp_st->sdp_port,
1933 rtsp_st->sdp_ttl,
1934 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0);
6f1b7b39 1935 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1936 &s->interrupt_callback, NULL) < 0) {
93ced3e8
FB
1937 err = AVERROR_INVALIDDATA;
1938 goto fail;
1939 }
6e71c120 1940 if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1941 goto fail;
93ced3e8
FB
1942 }
1943 return 0;
c8965800 1944fail:
3307e6ea 1945 ff_rtsp_close_streams(s);
57b5555c 1946 ff_network_close();
93ced3e8
FB
1947 return err;
1948}
1949
93ced3e8
FB
1950static int sdp_read_close(AVFormatContext *s)
1951{
3307e6ea 1952 ff_rtsp_close_streams(s);
57b5555c 1953 ff_network_close();
93ced3e8
FB
1954 return 0;
1955}
1956
51369f28
MS
1957static const AVClass sdp_demuxer_class = {
1958 .class_name = "SDP demuxer",
1959 .item_name = av_default_item_name,
1960 .option = sdp_options,
1961 .version = LIBAVUTIL_VERSION_INT,
1962};
1963
c6610a21 1964AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
1965 .name = "sdp",
1966 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
1967 .priv_data_size = sizeof(RTSPState),
1968 .read_probe = sdp_probe,
1969 .read_header = sdp_read_header,
1970 .read_packet = ff_rtsp_fetch_packet,
1971 .read_close = sdp_read_close,
17934c18 1972 .priv_class = &sdp_demuxer_class,
93ced3e8 1973};
44b70ce5 1974#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1975
44b70ce5 1976#if CONFIG_RTP_DEMUXER
44594cc7
MS
1977static int rtp_probe(AVProbeData *p)
1978{
1979 if (av_strstart(p->filename, "rtp:", NULL))
1980 return AVPROBE_SCORE_MAX;
1981 return 0;
1982}
1983
6e9651d1 1984static int rtp_read_header(AVFormatContext *s)
44594cc7
MS
1985{
1986 uint8_t recvbuf[1500];
1987 char host[500], sdp[500];
1988 int ret, port;
1989 URLContext* in = NULL;
1990 int payload_type;
a92be9b8 1991 AVCodecContext codec = { 0 };
44594cc7 1992 struct sockaddr_storage addr;
ae628ec1 1993 AVIOContext pb;
44594cc7 1994 socklen_t addrlen = sizeof(addr);
30266038 1995 RTSPState *rt = s->priv_data;
44594cc7
MS
1996
1997 if (!ff_network_init())
1998 return AVERROR(EIO);
1999
6f1b7b39 2000 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ,
ddffc2fd 2001 &s->interrupt_callback, NULL);
44594cc7
MS
2002 if (ret)
2003 goto fail;
2004
2005 while (1) {
bc371aca 2006 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
44594cc7
MS
2007 if (ret == AVERROR(EAGAIN))
2008 continue;
2009 if (ret < 0)
2010 goto fail;
2011 if (ret < 12) {
2012 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
2013 continue;
2014 }
2015
2016 if ((recvbuf[0] & 0xc0) != 0x80) {
2017 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
2018 "received\n");
2019 continue;
2020 }
2021
298a587f 2022 if (RTP_PT_IS_RTCP(recvbuf[1]))
f3a094f2
MS
2023 continue;
2024
44594cc7
MS
2025 payload_type = recvbuf[1] & 0x7f;
2026 break;
2027 }
1869ea03 2028 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 2029 ffurl_close(in);
44594cc7
MS
2030 in = NULL;
2031
44594cc7
MS
2032 if (ff_rtp_get_codec_info(&codec, payload_type)) {
2033 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
2034 "without an SDP file describing it\n",
2035 payload_type);
2036 goto fail;
2037 }
2038 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
2039 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
2040 "properly you need an SDP file "
2041 "describing it\n");
2042 }
2043
2044 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
2045 NULL, 0, s->filename);
2046
2047 snprintf(sdp, sizeof(sdp),
2048 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
2049 addr.ss_family == AF_INET ? 4 : 6, host,
2050 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
2051 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
2052 port, payload_type);
2053 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
2054
e731b8d8 2055 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
44594cc7
MS
2056 s->pb = &pb;
2057
2058 /* sdp_read_header initializes this again */
2059 ff_network_close();
2060
30266038
MS
2061 rt->media_type_mask = (1 << (AVMEDIA_TYPE_DATA+1)) - 1;
2062
6e9651d1 2063 ret = sdp_read_header(s);
44594cc7
MS
2064 s->pb = NULL;
2065 return ret;
2066
2067fail:
2068 if (in)
e52a9145 2069 ffurl_close(in);
44594cc7
MS
2070 ff_network_close();
2071 return ret;
2072}
2073
51369f28
MS
2074static const AVClass rtp_demuxer_class = {
2075 .class_name = "RTP demuxer",
2076 .item_name = av_default_item_name,
2077 .option = rtp_options,
2078 .version = LIBAVUTIL_VERSION_INT,
2079};
2080
c6610a21 2081AVInputFormat ff_rtp_demuxer = {
dfc2c4d9
AK
2082 .name = "rtp",
2083 .long_name = NULL_IF_CONFIG_SMALL("RTP input format"),
2084 .priv_data_size = sizeof(RTSPState),
2085 .read_probe = rtp_probe,
2086 .read_header = rtp_read_header,
2087 .read_packet = ff_rtsp_fetch_packet,
2088 .read_close = sdp_read_close,
17934c18
MS
2089 .flags = AVFMT_NOFILE,
2090 .priv_class = &rtp_demuxer_class,
44594cc7 2091};
44b70ce5 2092#endif /* CONFIG_RTP_DEMUXER */