rtmp: Support 'rtmp_live', an option which specifies if the media is a live stream.
[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
db0ed93e 33#include <sys/time.h>
a8475bbd
LB
34#if HAVE_POLL_H
35#include <poll.h>
6ad1c9c9 36#endif
e4a9e3cc 37#include "internal.h"
42572ef5 38#include "network.h"
cbfa66d0 39#include "os_support.h"
f5d33f52 40#include "http.h"
c971ff19 41#include "rtsp.h"
1617ad97 42
302879cb 43#include "rtpdec.h"
e9dea59f 44#include "rdt.h"
965a3ddb 45#include "rtpdec_formats.h"
a493f80a 46#include "rtpenc_chain.h"
5652bb94 47#include "url.h"
17fff881 48#include "rtpenc.h"
4934884a 49
1617ad97
FB
50//#define DEBUG
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) \
66 { name, longname, OFFSET(rtsp_flags), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, DEC, "rtsp_flags" }, \
67 { "filter_src", "Only receive packets from the negotiated peer IP", 0, AV_OPT_TYPE_CONST, {RTSP_FLAG_FILTER_SRC}, 0, 0, DEC, "rtsp_flags" }
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 },
17fff881
MS
87 { NULL },
88};
89
51369f28
MS
90static const AVOption sdp_options[] = {
91 RTSP_FLAG_OPTS("sdp_flags", "SDP flags"),
f011fcd6 92 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
51369f28
MS
93 { NULL },
94};
95
96static const AVOption rtp_options[] = {
97 RTSP_FLAG_OPTS("rtp_flags", "RTP flags"),
98 { NULL },
99};
100
1ef36a70
RB
101static void get_word_until_chars(char *buf, int buf_size,
102 const char *sep, const char **pp)
1617ad97
FB
103{
104 const char *p;
105 char *q;
106
107 p = *pp;
30619e6e 108 p += strspn(p, SPACE_CHARS);
1617ad97
FB
109 q = buf;
110 while (!strchr(sep, *p) && *p != '\0') {
111 if ((q - buf) < buf_size - 1)
112 *q++ = *p;
113 p++;
114 }
115 if (buf_size > 0)
116 *q = '\0';
117 *pp = p;
118}
119
1ef36a70
RB
120static void get_word_sep(char *buf, int buf_size, const char *sep,
121 const char **pp)
1617ad97 122{
1ef36a70
RB
123 if (**pp == '/') (*pp)++;
124 get_word_until_chars(buf, buf_size, sep, pp);
125}
1617ad97 126
1ef36a70
RB
127static void get_word(char *buf, int buf_size, const char **pp)
128{
129 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
130}
131
8bf0f969
MS
132/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
133 * and end time.
134 * Used for seeking in the rtp stream.
135 */
136static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
137{
138 char buf[256];
139
140 p += strspn(p, SPACE_CHARS);
141 if (!av_stristart(p, "npt=", &p))
142 return;
143
144 *start = AV_NOPTS_VALUE;
145 *end = AV_NOPTS_VALUE;
146
147 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 148 av_parse_time(start, buf, 1);
8bf0f969
MS
149 if (*p == '-') {
150 p++;
151 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 152 av_parse_time(end, buf, 1);
8bf0f969
MS
153 }
154// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
155// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
156}
157
158static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
159{
a92be9b8 160 struct addrinfo hints = { 0 }, *ai = NULL;
8bf0f969
MS
161 hints.ai_flags = AI_NUMERICHOST;
162 if (getaddrinfo(buf, NULL, &hints, &ai))
163 return -1;
164 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
165 freeaddrinfo(ai);
166 return 0;
167}
168
44b70ce5 169#if CONFIG_RTPDEC
003eb642
MS
170static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
171 RTSPStream *rtsp_st, AVCodecContext *codec)
172{
173 if (!handler)
174 return;
175 codec->codec_id = handler->codec_id;
176 rtsp_st->dynamic_handler = handler;
4b3dc857 177 if (handler->alloc) {
9261e6cf 178 rtsp_st->dynamic_protocol_context = handler->alloc();
4b3dc857
MS
179 if (!rtsp_st->dynamic_protocol_context)
180 rtsp_st->dynamic_handler = NULL;
181 }
003eb642
MS
182}
183
c8965800 184/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 185static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 186 AVStream *st, RTSPStream *rtsp_st,
c8965800 187 int payload_type, const char *p)
93ced3e8 188{
86b6e387 189 AVCodecContext *codec = st->codec;
93ced3e8 190 char buf[256];
d1ccf0e0
RD
191 int i;
192 AVCodec *c;
7b49ce2e 193 const char *c_name;
93ced3e8 194
d1ccf0e0 195 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
196 * see if we can handle this kind of payload.
197 * The space should normally not be there but some Real streams or
198 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
199 * have a trailing space. */
200 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 201 if (payload_type >= RTP_PT_PRIVATE) {
003eb642
MS
202 RTPDynamicProtocolHandler *handler =
203 ff_rtp_handler_find_by_name(buf, codec->codec_type);
204 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
205 /* If no dynamic handler was found, check with the list of standard
206 * allocated types, if such a stream for some reason happens to
207 * use a private payload type. This isn't handled in rtpdec.c, since
208 * the format name from the rtpmap line never is passed into rtpdec. */
209 if (!rtsp_st->dynamic_handler)
210 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
93ced3e8 211 } else {
c8965800
RB
212 /* We are in a standard case
213 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 214 /* search into AVRtpPayloadTypes[] */
7ed19d7f 215 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
216 }
217
218 c = avcodec_find_decoder(codec->codec_id);
219 if (c && c->name)
7b49ce2e 220 c_name = c->name;
d1ccf0e0 221 else
170870b7 222 c_name = "(null)";
d1ccf0e0 223
7515ed0c
RB
224 get_word_sep(buf, sizeof(buf), "/", &p);
225 i = atoi(buf);
226 switch (codec->codec_type) {
72415b2a 227 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
228 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
229 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
230 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
231 if (i > 0) {
232 codec->sample_rate = i;
c3f9ebf7 233 avpriv_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
234 get_word_sep(buf, sizeof(buf), "/", &p);
235 i = atoi(buf);
236 if (i > 0)
237 codec->channels = i;
238 // TODO: there is a bug here; if it is a mono stream, and
239 // less than 22000Hz, faad upconverts to stereo and twice
240 // the frequency. No problem, but the sample rate is being
241 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 242 }
7515ed0c
RB
243 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
244 codec->sample_rate);
245 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
246 codec->channels);
247 break;
72415b2a 248 case AVMEDIA_TYPE_VIDEO:
7515ed0c 249 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387 250 if (i > 0)
c3f9ebf7 251 avpriv_set_pts_info(st, 32, 1, i);
7515ed0c
RB
252 break;
253 default:
254 break;
255 }
25836606
MS
256 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->init)
257 rtsp_st->dynamic_handler->init(s, st->index,
258 rtsp_st->dynamic_protocol_context);
7515ed0c 259 return 0;
93ced3e8
FB
260}
261
c2bfd816 262/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
263 * is broken out as a function because it is used in rtp_h264.c, which is
264 * forthcoming. */
3307e6ea 265int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 266 char *value, int value_size)
d0deedcb 267{
30619e6e 268 *p += strspn(*p, SPACE_CHARS);
c8965800 269 if (**p) {
d0deedcb
RM
270 get_word_sep(attr, attr_size, "=", p);
271 if (**p == '=')
272 (*p)++;
273 get_word_sep(value, value_size, ";", p);
274 if (**p == ';')
275 (*p)++;
276 return 1;
277 }
278 return 0;
279}
280
93ced3e8
FB
281typedef struct SDPParseState {
282 /* SDP only */
3fbd12d1 283 struct sockaddr_storage default_ip;
c8965800
RB
284 int default_ttl;
285 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
286} SDPParseState;
287
288static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
289 int letter, const char *buf)
290{
8b1ab7bf 291 RTSPState *rt = s->priv_data;
1617ad97
FB
292 char buf1[64], st_type[64];
293 const char *p;
72415b2a 294 enum AVMediaType codec_type;
fb65d2ca 295 int payload_type, i;
1617ad97
FB
296 AVStream *st;
297 RTSPStream *rtsp_st;
3fbd12d1 298 struct sockaddr_storage sdp_ip;
93ced3e8
FB
299 int ttl;
300
dfd2a005 301 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
302
303 p = buf;
cb760a47
RB
304 if (s1->skip_media && letter != 'm')
305 return;
c8965800 306 switch (letter) {
93ced3e8
FB
307 case 'c':
308 get_word(buf1, sizeof(buf1), &p);
309 if (strcmp(buf1, "IN") != 0)
310 return;
311 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 312 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
313 return;
314 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 315 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
316 return;
317 ttl = 16;
318 if (*p == '/') {
319 p++;
320 get_word_sep(buf1, sizeof(buf1), "/", &p);
321 ttl = atoi(buf1);
322 }
323 if (s->nb_streams == 0) {
324 s1->default_ip = sdp_ip;
325 s1->default_ttl = ttl;
326 } else {
d9c0510e 327 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
328 rtsp_st->sdp_ip = sdp_ip;
329 rtsp_st->sdp_ttl = ttl;
330 }
331 break;
1617ad97 332 case 's':
d2d67e42 333 av_dict_set(&s->metadata, "title", p, 0);
1617ad97
FB
334 break;
335 case 'i':
336 if (s->nb_streams == 0) {
d2d67e42 337 av_dict_set(&s->metadata, "comment", p, 0);
1617ad97
FB
338 break;
339 }
340 break;
341 case 'm':
342 /* new stream */
cb760a47 343 s1->skip_media = 0;
f011fcd6 344 codec_type = AVMEDIA_TYPE_UNKNOWN;
1617ad97
FB
345 get_word(st_type, sizeof(st_type), &p);
346 if (!strcmp(st_type, "audio")) {
72415b2a 347 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 348 } else if (!strcmp(st_type, "video")) {
72415b2a 349 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 350 } else if (!strcmp(st_type, "application")) {
72415b2a 351 codec_type = AVMEDIA_TYPE_DATA;
f011fcd6
JB
352 }
353 if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) {
cb760a47 354 s1->skip_media = 1;
1617ad97
FB
355 return;
356 }
1617ad97
FB
357 rtsp_st = av_mallocz(sizeof(RTSPStream));
358 if (!rtsp_st)
359 return;
8b1ab7bf
FB
360 rtsp_st->stream_index = -1;
361 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
362
363 rtsp_st->sdp_ip = s1->default_ip;
364 rtsp_st->sdp_ttl = s1->default_ttl;
365
93ced3e8
FB
366 get_word(buf1, sizeof(buf1), &p); /* port */
367 rtsp_st->sdp_port = atoi(buf1);
368
369 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 370
93ced3e8
FB
371 /* XXX: handle list of formats */
372 get_word(buf1, sizeof(buf1), &p); /* format list */
373 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 374
7ed19d7f 375 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf 376 /* no corresponding stream */
45600148
MS
377 } else if (rt->server_type == RTSP_SERVER_WMS &&
378 codec_type == AVMEDIA_TYPE_DATA) {
379 /* RTX stream, a stream that carries all the other actual
380 * audio/video streams. Don't expose this to the callers. */
8b1ab7bf 381 } else {
84ad31ff 382 st = avformat_new_stream(s, NULL);
8b1ab7bf
FB
383 if (!st)
384 return;
84ad31ff 385 st->id = rt->nb_rtsp_streams - 1;
8b1ab7bf 386 rtsp_st->stream_index = st->index;
01f4895c 387 st->codec->codec_type = codec_type;
d1ccf0e0 388 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 389 RTPDynamicProtocolHandler *handler;
8b1ab7bf 390 /* if standard payload type, we can find the codec right now */
bf6d9818 391 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
392 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
393 st->codec->sample_rate > 0)
c3f9ebf7 394 avpriv_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
395 /* Even static payload types may need a custom depacketizer */
396 handler = ff_rtp_handler_find_by_id(
397 rtsp_st->sdp_payload_type, st->codec->codec_type);
398 init_rtp_handler(handler, rtsp_st, st->codec);
25836606
MS
399 if (handler && handler->init)
400 handler->init(s, st->index,
401 rtsp_st->dynamic_protocol_context);
8b1ab7bf
FB
402 }
403 }
1617ad97 404 /* put a default control url */
00eb13e0 405 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 406 sizeof(rtsp_st->control_url));
1617ad97
FB
407 break;
408 case 'a':
00eb13e0
AS
409 if (av_strstart(p, "control:", &p)) {
410 if (s->nb_streams == 0) {
411 if (!strncmp(p, "rtsp://", 7))
412 av_strlcpy(rt->control_uri, p,
413 sizeof(rt->control_uri));
414 } else {
0b6a7ff4
MS
415 char proto[32];
416 /* get the control url */
d9c0510e 417 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 418
0b6a7ff4
MS
419 /* XXX: may need to add full url resolution */
420 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
421 NULL, NULL, 0, p);
422 if (proto[0] == '\0') {
423 /* relative control URL */
424 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
425 av_strlcat(rtsp_st->control_url, "/",
426 sizeof(rtsp_st->control_url));
427 av_strlcat(rtsp_st->control_url, p,
428 sizeof(rtsp_st->control_url));
429 } else
430 av_strlcpy(rtsp_st->control_url, p,
431 sizeof(rtsp_st->control_url));
00eb13e0 432 }
83d14c85 433 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 434 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 435 get_word(buf1, sizeof(buf1), &p);
93ced3e8 436 payload_type = atoi(buf1);
d9c0510e 437 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
45600148
MS
438 if (rtsp_st->stream_index >= 0) {
439 st = s->streams[rtsp_st->stream_index];
440 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
441 }
7fc8ac7f
JA
442 } else if (av_strstart(p, "fmtp:", &p) ||
443 av_strstart(p, "framesize:", &p)) {
93ced3e8 444 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
445 // let dynamic protocol handlers have a stab at the line.
446 get_word(buf1, sizeof(buf1), &p);
447 payload_type = atoi(buf1);
d9c0510e
MS
448 for (i = 0; i < rt->nb_rtsp_streams; i++) {
449 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
450 if (rtsp_st->sdp_payload_type == payload_type &&
451 rtsp_st->dynamic_handler &&
452 rtsp_st->dynamic_handler->parse_sdp_a_line)
453 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
454 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 455 }
c8965800 456 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
457 int64_t start, end;
458
459 // this is so that seeking on a streamed file can work.
460 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
461 s->start_time = start;
462 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
463 s->duration = (end == AV_NOPTS_VALUE) ?
464 AV_NOPTS_VALUE : end - start;
119b4668
RB
465 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
466 if (atoi(p) == 1)
467 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
468 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
469 s->nb_streams > 0) {
470 st = s->streams[s->nb_streams - 1];
471 st->codec->sample_rate = atoi(p);
1a30d541
RB
472 } else {
473 if (rt->server_type == RTSP_SERVER_WMS)
474 ff_wms_parse_sdp_a_line(s, p);
475 if (s->nb_streams > 0) {
45600148
MS
476 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
477
c4a3d032 478 if (rt->server_type == RTSP_SERVER_REAL)
45600148 479 ff_real_parse_sdp_a_line(s, rtsp_st->stream_index, p);
c4a3d032 480
c4a3d032
RB
481 if (rtsp_st->dynamic_handler &&
482 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800 483 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
45600148 484 rtsp_st->stream_index,
c4a3d032 485 rtsp_st->dynamic_protocol_context, buf);
1a30d541 486 }
1617ad97
FB
487 }
488 break;
489 }
490}
491
0526c6f7 492int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 493{
a8475bbd 494 RTSPState *rt = s->priv_data;
1617ad97
FB
495 const char *p;
496 int letter;
9211bcdd
RB
497 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
498 * contain long SDP lines containing complete ASF Headers (several
499 * kB) or arrays of MDPR (RM stream descriptor) headers plus
500 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
501 * buffer is large.
502 *
afcea58c
JA
503 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
504 * in rtpdec_xiph.c. */
373afbaf 505 char buf[16384], *q;
a92be9b8 506 SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state;
115329f1 507
1617ad97 508 p = content;
c8965800 509 for (;;) {
30619e6e 510 p += strspn(p, SPACE_CHARS);
1617ad97
FB
511 letter = *p;
512 if (letter == '\0')
513 break;
514 p++;
515 if (*p != '=')
516 goto next_line;
517 p++;
518 /* get the content */
519 q = buf;
b6892136 520 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
521 if ((q - buf) < sizeof(buf) - 1)
522 *q++ = *p;
523 p++;
524 }
525 *q = '\0';
93ced3e8 526 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
527 next_line:
528 while (*p != '\n' && *p != '\0')
529 p++;
530 if (*p == '\n')
531 p++;
532 }
a8475bbd
LB
533 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
534 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
535 return 0;
536}
44b70ce5 537#endif /* CONFIG_RTPDEC */
1617ad97 538
93e7490e
MS
539void ff_rtsp_undo_setup(AVFormatContext *s)
540{
541 RTSPState *rt = s->priv_data;
542 int i;
543
544 for (i = 0; i < rt->nb_rtsp_streams; i++) {
545 RTSPStream *rtsp_st = rt->rtsp_streams[i];
546 if (!rtsp_st)
547 continue;
548 if (rtsp_st->transport_priv) {
549 if (s->oformat) {
550 AVFormatContext *rtpctx = rtsp_st->transport_priv;
551 av_write_trailer(rtpctx);
552 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
553 uint8_t *ptr;
6dc7d80d 554 avio_close_dyn_buf(rtpctx->pb, &ptr);
93e7490e
MS
555 av_free(ptr);
556 } else {
22a3212e 557 avio_close(rtpctx->pb);
93e7490e 558 }
b22dbb29 559 avformat_free_context(rtpctx);
93e7490e
MS
560 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
561 ff_rdt_parse_close(rtsp_st->transport_priv);
562 else if (CONFIG_RTPDEC)
bfc6db44 563 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
564 }
565 rtsp_st->transport_priv = NULL;
566 if (rtsp_st->rtp_handle)
e52a9145 567 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
568 rtsp_st->rtp_handle = NULL;
569 }
570}
571
1ced9da3 572/* close and free RTSP streams */
3307e6ea 573void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 574{
52aa4338 575 RTSPState *rt = s->priv_data;
1ced9da3
LA
576 int i;
577 RTSPStream *rtsp_st;
578
93e7490e 579 ff_rtsp_undo_setup(s);
c8965800 580 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
581 rtsp_st = rt->rtsp_streams[i];
582 if (rtsp_st) {
1ced9da3 583 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
9261e6cf 584 rtsp_st->dynamic_handler->free(
c8965800 585 rtsp_st->dynamic_protocol_context);
ea7f0807 586 av_free(rtsp_st);
1ced9da3
LA
587 }
588 }
589 av_free(rt->rtsp_streams);
590 if (rt->asf_ctx) {
cd3716b9 591 avformat_close_input(&rt->asf_ctx);
1ced9da3 592 }
a8475bbd 593 av_free(rt->p);
96a7c975 594 av_free(rt->recvbuf);
1ced9da3
LA
595}
596
c8965800 597static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
598{
599 RTSPState *rt = s->priv_data;
600 AVStream *st = NULL;
601
602 /* open the RTP context */
603 if (rtsp_st->stream_index >= 0)
604 st = s->streams[rtsp_st->stream_index];
605 if (!st)
606 s->ctx_flags |= AVFMTCTX_NOHEADER;
607
44b70ce5 608 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
609 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
610 rtsp_st->rtp_handle,
611 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 612 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 613 rtsp_st->rtp_handle = NULL;
44b70ce5 614 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
615 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
616 rtsp_st->dynamic_protocol_context,
617 rtsp_st->dynamic_handler);
44b70ce5 618 else if (CONFIG_RTPDEC)
bfc6db44 619 rtsp_st->transport_priv = ff_rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
620 rtsp_st->sdp_payload_type,
621 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
622 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
623
624 if (!rtsp_st->transport_priv) {
625 return AVERROR(ENOMEM);
44b70ce5 626 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 627 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
628 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
629 rtsp_st->dynamic_protocol_context,
630 rtsp_st->dynamic_handler);
1ced9da3
LA
631 }
632 }
633
634 return 0;
635}
636
6f5a3d0a 637#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
638static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
639{
ddce7dab
MR
640 const char *q;
641 char *p;
1617ad97
FB
642 int v;
643
ddce7dab
MR
644 q = *pp;
645 q += strspn(q, SPACE_CHARS);
646 v = strtol(q, &p, 10);
1617ad97
FB
647 if (*p == '-') {
648 p++;
649 *min_ptr = v;
ddce7dab 650 v = strtol(p, &p, 10);
1617ad97
FB
651 *max_ptr = v;
652 } else {
653 *min_ptr = v;
654 *max_ptr = v;
655 }
656 *pp = p;
657}
658
659/* XXX: only one transport specification is parsed */
a9e534d5 660static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
661{
662 char transport_protocol[16];
663 char profile[16];
664 char lower_transport[16];
665 char parameter[16];
666 RTSPTransportField *th;
667 char buf[256];
115329f1 668
1617ad97 669 reply->nb_transports = 0;
115329f1 670
c8965800 671 for (;;) {
30619e6e 672 p += strspn(p, SPACE_CHARS);
1617ad97
FB
673 if (*p == '\0')
674 break;
675
676 th = &reply->transports[reply->nb_transports];
677
115329f1 678 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 679 "/", &p);
bb3244de 680 if (!av_strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
681 get_word_sep(profile, sizeof(profile), "/;,", &p);
682 lower_transport[0] = '\0';
683 /* rtp/avp/<protocol> */
684 if (*p == '/') {
7ecc634e
LB
685 get_word_sep(lower_transport, sizeof(lower_transport),
686 ";,", &p);
119b4668
RB
687 }
688 th->transport = RTSP_TRANSPORT_RTP;
bb3244de
RD
689 } else if (!av_strcasecmp (transport_protocol, "x-pn-tng") ||
690 !av_strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 691 /* x-pn-tng/<protocol> */
e1502118
LB
692 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
693 profile[0] = '\0';
119b4668 694 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 695 }
bb3244de 696 if (!av_strcasecmp(lower_transport, "TCP"))
90abbdba 697 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 698 else
90abbdba 699 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 700
1617ad97
FB
701 if (*p == ';')
702 p++;
703 /* get each parameter */
704 while (*p != '\0' && *p != ',') {
705 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
706 if (!strcmp(parameter, "port")) {
707 if (*p == '=') {
708 p++;
709 rtsp_parse_range(&th->port_min, &th->port_max, &p);
710 }
711 } else if (!strcmp(parameter, "client_port")) {
712 if (*p == '=') {
713 p++;
115329f1 714 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
715 &th->client_port_max, &p);
716 }
717 } else if (!strcmp(parameter, "server_port")) {
718 if (*p == '=') {
719 p++;
115329f1 720 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
721 &th->server_port_max, &p);
722 }
723 } else if (!strcmp(parameter, "interleaved")) {
724 if (*p == '=') {
725 p++;
115329f1 726 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
727 &th->interleaved_max, &p);
728 }
729 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
730 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
731 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
732 } else if (!strcmp(parameter, "ttl")) {
733 if (*p == '=') {
734 p++;
735 th->ttl = strtol(p, (char **)&p, 10);
736 }
737 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
738 if (*p == '=') {
739 p++;
740 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 741 get_sockaddr(buf, &th->destination);
1617ad97 742 }
619298a8
JW
743 } else if (!strcmp(parameter, "source")) {
744 if (*p == '=') {
745 p++;
746 get_word_sep(buf, sizeof(buf), ";,", &p);
747 av_strlcpy(th->source, buf, sizeof(th->source));
748 }
1617ad97 749 }
619298a8 750
1617ad97
FB
751 while (*p != ';' && *p != '\0' && *p != ',')
752 p++;
753 if (*p == ';')
754 p++;
755 }
756 if (*p == ',')
757 p++;
758
759 reply->nb_transports++;
760 }
761}
762
29db7c3a
MS
763static void handle_rtp_info(RTSPState *rt, const char *url,
764 uint32_t seq, uint32_t rtptime)
765{
766 int i;
767 if (!rtptime || !url[0])
768 return;
769 if (rt->transport != RTSP_TRANSPORT_RTP)
770 return;
771 for (i = 0; i < rt->nb_rtsp_streams; i++) {
772 RTSPStream *rtsp_st = rt->rtsp_streams[i];
773 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
774 if (!rtpctx)
775 continue;
776 if (!strcmp(rtsp_st->control_url, url)) {
777 rtpctx->base_timestamp = rtptime;
778 break;
779 }
780 }
781}
782
783static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
784{
785 int read = 0;
786 char key[20], value[1024], url[1024] = "";
787 uint32_t seq = 0, rtptime = 0;
788
789 for (;;) {
790 p += strspn(p, SPACE_CHARS);
791 if (!*p)
792 break;
793 get_word_sep(key, sizeof(key), "=", &p);
794 if (*p != '=')
795 break;
796 p++;
797 get_word_sep(value, sizeof(value), ";, ", &p);
798 read++;
799 if (!strcmp(key, "url"))
800 av_strlcpy(url, value, sizeof(url));
801 else if (!strcmp(key, "seq"))
4515f9b5 802 seq = strtoul(value, NULL, 10);
29db7c3a 803 else if (!strcmp(key, "rtptime"))
4515f9b5 804 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
805 if (*p == ',') {
806 handle_rtp_info(rt, url, seq, rtptime);
807 url[0] = '\0';
808 seq = rtptime = 0;
809 read = 0;
810 }
811 if (*p)
812 p++;
813 }
814 if (read > 0)
815 handle_rtp_info(rt, url, seq, rtptime);
816}
817
2626308a 818void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 819 RTSPState *rt, const char *method)
1617ad97
FB
820{
821 const char *p;
822
823 /* NOTE: we do case independent match for broken servers */
824 p = buf;
f7d78f36 825 if (av_stristart(p, "Session:", &p)) {
30e79845 826 int t;
1617ad97 827 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
828 if (av_stristart(p, ";timeout=", &p) &&
829 (t = strtol(p, NULL, 10)) > 0) {
830 reply->timeout = t;
831 }
f7d78f36 832 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 833 reply->content_length = strtol(p, NULL, 10);
f7d78f36 834 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 835 rtsp_parse_transport(reply, p);
f7d78f36 836 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 837 reply->seq = strtol(p, NULL, 10);
f7d78f36 838 } else if (av_stristart(p, "Range:", &p)) {
31693e00 839 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 840 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 841 p += strspn(p, SPACE_CHARS);
30aa6aed 842 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 843 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 844 p += strspn(p, SPACE_CHARS);
7a86bafa 845 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
846 } else if (av_stristart(p, "Notice:", &p) ||
847 av_stristart(p, "X-Notice:", &p)) {
848 reply->notice = strtol(p, NULL, 10);
d243ba30 849 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 850 p += strspn(p, SPACE_CHARS);
d243ba30 851 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 852 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 853 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
854 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
855 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 856 p += strspn(p, SPACE_CHARS);
acc9ed14 857 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 858 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 859 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
860 if (method && !strcmp(method, "DESCRIBE"))
861 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
862 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
863 p += strspn(p, SPACE_CHARS);
864 if (method && !strcmp(method, "PLAY"))
865 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
866 } else if (av_stristart(p, "Public:", &p) && rt) {
867 if (strstr(p, "GET_PARAMETER") &&
868 method && !strcmp(method, "OPTIONS"))
869 rt->get_parameter_supported = 1;
30eae325
MS
870 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
871 p += strspn(p, SPACE_CHARS);
872 rt->accept_dynamic_rate = atoi(p);
1617ad97
FB
873 }
874}
875
b7b8fc34 876/* skip a RTP/TCP interleaved packet */
ec55edba 877void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
878{
879 RTSPState *rt = s->priv_data;
880 int ret, len, len1;
881 uint8_t buf[1024];
882
dce37564 883 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
884 if (ret != 3)
885 return;
80fb8234 886 len = AV_RB16(buf + 1);
67c9cd69 887
dfd2a005 888 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 889
b7b8fc34
FB
890 /* skip payload */
891 while (len > 0) {
892 len1 = len;
893 if (len1 > sizeof(buf))
894 len1 = sizeof(buf);
dce37564 895 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
896 if (ret != len1)
897 return;
898 len -= len1;
899 }
900}
1617ad97 901
3307e6ea 902int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 903 unsigned char **content_ptr,
3df54c6b 904 int return_on_interleaved_data, const char *method)
1617ad97
FB
905{
906 RTSPState *rt = s->priv_data;
907 char buf[4096], buf1[1024], *q;
908 unsigned char ch;
909 const char *p;
1a6b9a98 910 int ret, content_length, line_count = 0, request = 0;
1617ad97
FB
911 unsigned char *content = NULL;
912
1a6b9a98
TW
913start:
914 line_count = 0;
915 request = 0;
916 content = NULL;
d541a7d2 917 memset(reply, 0, sizeof(*reply));
1617ad97 918
1617ad97 919 /* parse reply (XXX: use buffers) */
1617ad97 920 rt->last_reply[0] = '\0';
c8965800 921 for (;;) {
1617ad97 922 q = buf;
c8965800 923 for (;;) {
dce37564 924 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
dfd2a005 925 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 926 if (ret != 1)
2401660d 927 return AVERROR_EOF;
1617ad97
FB
928 if (ch == '\n')
929 break;
b7b8fc34
FB
930 if (ch == '$') {
931 /* XXX: only parse it if first char on line ? */
7e726132
RB
932 if (return_on_interleaved_data) {
933 return 1;
934 } else
ec55edba 935 ff_rtsp_skip_packet(s);
b7b8fc34 936 } else if (ch != '\r') {
1617ad97
FB
937 if ((q - buf) < sizeof(buf) - 1)
938 *q++ = ch;
939 }
940 }
941 *q = '\0';
67c9cd69 942
dfd2a005 943 av_dlog(s, "line='%s'\n", buf);
67c9cd69 944
1617ad97
FB
945 /* test if last line */
946 if (buf[0] == '\0')
947 break;
948 p = buf;
949 if (line_count == 0) {
950 /* get reply code */
951 get_word(buf1, sizeof(buf1), &p);
1a6b9a98
TW
952 if (!strncmp(buf1, "RTSP/", 5)) {
953 get_word(buf1, sizeof(buf1), &p);
954 reply->status_code = atoi(buf1);
955 av_strlcpy(reply->reason, p, sizeof(reply->reason));
956 } else {
957 av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method
958 get_word(buf1, sizeof(buf1), &p); // object
959 request = 1;
960 }
1617ad97 961 } else {
77223c53 962 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
963 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
964 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
965 }
966 line_count++;
967 }
115329f1 968
1a6b9a98 969 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0' && !request)
75e61b0e 970 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 971
1617ad97
FB
972 content_length = reply->content_length;
973 if (content_length > 0) {
974 /* leave some room for a trailing '\0' (useful for simple parsing) */
975 content = av_malloc(content_length + 1);
dce37564 976 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
977 content[content_length] = '\0';
978 }
979 if (content_ptr)
980 *content_ptr = content;
e2e2e7dd
AB
981 else
982 av_free(content);
7e726132 983
1a6b9a98
TW
984 if (request) {
985 char buf[1024];
986 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
987 const char* ptr = buf;
988
989 if (!strcmp(reply->reason, "OPTIONS")) {
990 snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n");
991 if (reply->seq)
992 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq);
993 if (reply->session_id[0])
994 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n",
995 reply->session_id);
996 } else {
997 snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n");
998 }
999 av_strlcat(buf, "\r\n", sizeof(buf));
1000
1001 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1002 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1003 ptr = base64buf;
1004 }
1005 ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr));
1006
1007 rt->last_cmd_time = av_gettime();
1008 /* Even if the request from the server had data, it is not the data
1009 * that the caller wants or expects. The memory could also be leaked
1010 * if the actual following reply has content data. */
1011 if (content_ptr)
1012 av_freep(content_ptr);
1013 /* If method is set, this is called from ff_rtsp_send_cmd,
1014 * where a reply to exactly this request is awaited. For
705eeb5e 1015 * callers from within packet receiving, we just want to
1a6b9a98
TW
1016 * return to the caller and go back to receiving packets. */
1017 if (method)
1018 goto start;
1019 return 0;
1020 }
1021
7ed8211b
LB
1022 if (rt->seq != reply->seq) {
1023 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
1024 rt->seq, reply->seq);
1025 }
1026
fccb1770
RB
1027 /* EOS */
1028 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
1029 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 1030 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 1031 rt->state = RTSP_STATE_IDLE;
c8965800 1032 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 1033 return AVERROR(EIO); /* data or server error */
c8965800 1034 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
1035 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
1036 return AVERROR(EPERM);
1037
7e726132 1038 return 0;
1617ad97
FB
1039}
1040
57c4d01e
DEP
1041/**
1042 * Send a command to the RTSP server without waiting for the reply.
1043 *
1044 * @param s RTSP (de)muxer context
1045 * @param method the method for the request
1046 * @param url the target url for the request
1047 * @param headers extra header lines to include in the request
1048 * @param send_content if non-null, the data to send as request body content
1049 * @param send_content_length the length of the send_content data, or 0 if
1050 * send_content is null
1051 *
1052 * @return zero if success, nonzero otherwise
1053 */
1054static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
1055 const char *method, const char *url,
1056 const char *headers,
1057 const unsigned char *send_content,
1058 int send_content_length)
29b9f58b
RB
1059{
1060 RTSPState *rt = s->priv_data;
f5d33f52
JA
1061 char buf[4096], *out_buf;
1062 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 1063
f5d33f52
JA
1064 /* Add in RTSP headers */
1065 out_buf = buf;
29b9f58b 1066 rt->seq++;
b17d11c6
MS
1067 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1068 if (headers)
1069 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1070 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
1071 if (rt->session_id[0] != '\0' && (!headers ||
1072 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1073 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1074 }
aa8bf2fb
MS
1075 if (rt->auth[0]) {
1076 char *str = ff_http_auth_create_response(&rt->auth_state,
1077 rt->auth, url, method);
1078 if (str)
1079 av_strlcat(buf, str, sizeof(buf));
1080 av_free(str);
1081 }
dfd017bf
MS
1082 if (send_content_length > 0 && send_content)
1083 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1084 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1085
f5d33f52
JA
1086 /* base64 encode rtsp if tunneling */
1087 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1088 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1089 out_buf = base64buf;
1090 }
1091
dfd2a005 1092 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 1093
925e908b 1094 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
1095 if (send_content_length > 0 && send_content) {
1096 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1097 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1098 "with content data not supported\n");
1099 return AVERROR_PATCHWELCOME;
1100 }
925e908b 1101 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1102 }
30e79845 1103 rt->last_cmd_time = av_gettime();
d0382374
JA
1104
1105 return 0;
30e79845
RB
1106}
1107
d0382374 1108int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1109 const char *url, const char *headers)
dfd017bf 1110{
d0382374 1111 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1112}
1113
d0382374 1114int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1115 const char *headers, RTSPMessageHeader *reply,
1116 unsigned char **content_ptr)
30e79845 1117{
d0382374 1118 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1119 content_ptr, NULL, 0);
29b9f58b
RB
1120}
1121
d0382374 1122int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1123 const char *method, const char *url,
1124 const char *header,
1125 RTSPMessageHeader *reply,
1126 unsigned char **content_ptr,
1127 const unsigned char *send_content,
1128 int send_content_length)
dfd017bf 1129{
30af0779
MS
1130 RTSPState *rt = s->priv_data;
1131 HTTPAuthType cur_auth_type;
2f96cc1f 1132 int ret, attempts = 0;
30af0779
MS
1133
1134retry:
1135 cur_auth_type = rt->auth_state.auth_type;
d0382374 1136 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1137 send_content,
1138 send_content_length)))
d0382374 1139 return ret;
dfd017bf 1140
3df54c6b 1141 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1142 return ret;
2f96cc1f 1143 attempts++;
30af0779 1144
2f96cc1f
MS
1145 if (reply->status_code == 401 &&
1146 (cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) &&
1147 rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2)
30af0779 1148 goto retry;
d0382374 1149
bf55cf19 1150 if (reply->status_code > 400){
d93fdcbf 1151 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1152 method,
d93fdcbf
LB
1153 reply->status_code,
1154 reply->reason);
bf55cf19
LB
1155 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1156 }
1157
d0382374 1158 return 0;
dfd017bf
MS
1159}
1160
fef5649a 1161int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1162 int lower_transport, const char *real_challenge)
1617ad97
FB
1163{
1164 RTSPState *rt = s->priv_data;
58f09785 1165 int rtx = 0, j, i, err, interleave = 0, port_off;
1617ad97 1166 RTSPStream *rtsp_st;
a9e534d5 1167 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1168 char cmd[2048];
e9dea59f
RB
1169 const char *trans_pref;
1170
119b4668 1171 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1172 trans_pref = "x-pn-tng";
1173 else
1174 trans_pref = "RTP/AVP";
115329f1 1175
30e79845
RB
1176 /* default timeout: 1 minute */
1177 rt->timeout = 60;
1178
1617ad97
FB
1179 /* for each stream, make the setup request */
1180 /* XXX: we assume the same server is used for the control of each
c8965800 1181 * RTSP stream */
d1ccf0e0 1182
58f09785
DV
1183 /* Choose a random starting offset within the first half of the
1184 * port range, to allow for a number of ports to try even if the offset
1185 * happens to be at the end of the random range. */
1186 port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2);
1187 /* even random offset */
1188 port_off -= port_off & 0x01;
1189
1190 for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1191 char transport[2048];
1192
f75e3da5 1193 /*
f830c9a4
RB
1194 * WMS serves all UDP data over a single connection, the RTX, which
1195 * isn't necessarily the first in the SDP but has to be the first
1196 * to be set up, else the second/third SETUP will fail with a 461.
1197 */
1198 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1199 rt->server_type == RTSP_SERVER_WMS) {
1200 if (i == 0) {
1201 /* rtx first */
1202 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1203 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1204 if (len >= 4 &&
c8965800
RB
1205 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1206 "/rtx"))
f830c9a4
RB
1207 break;
1208 }
1209 if (rtx == rt->nb_rtsp_streams)
1210 return -1; /* no RTX found */
1211 rtsp_st = rt->rtsp_streams[rtx];
1212 } else
1213 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1214 } else
2fea9650 1215 rtsp_st = rt->rtsp_streams[i];
1617ad97 1216
1617ad97 1217 /* RTP/UDP */
90abbdba 1218 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1219 char buf[256];
85fb7b34 1220
f830c9a4
RB
1221 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1222 port = reply->transports[0].client_port_min;
1223 goto have_port;
1224 }
1225
85fb7b34 1226 /* first try in specified port range */
dbb06b8c 1227 while (j <= rt->rtp_port_max) {
bc495bad
DV
1228 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1229 "?localport=%d", j);
1230 /* we will use two ports per rtp stream (rtp and rtcp) */
1231 j += 2;
1232 if (!ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
1233 &s->interrupt_callback, NULL))
1234 goto rtp_opened;
1617ad97 1235 }
85fb7b34 1236
a3b058b7
MS
1237 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1238 err = AVERROR(EIO);
1239 goto fail;
85fb7b34
FB
1240
1241 rtp_opened:
bfc6db44 1242 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1243 have_port:
0ad306bc 1244 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1245 "%s/UDP;", trans_pref);
1246 if (rt->server_type != RTSP_SERVER_REAL)
1247 av_strlcat(transport, "unicast;", sizeof(transport));
1248 av_strlcatf(transport, sizeof(transport),
1249 "client_port=%d", port);
f830c9a4
RB
1250 if (rt->transport == RTSP_TRANSPORT_RTP &&
1251 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1252 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1253 }
1254
1255 /* RTP/TCP */
90abbdba 1256 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1257 /* For WMS streams, the application streams are only used for
090438cc
RB
1258 * UDP. When trying to set it up for TCP streams, the server
1259 * will return an error. Therefore, we skip those streams. */
1260 if (rt->server_type == RTSP_SERVER_WMS &&
45600148
MS
1261 (rtsp_st->stream_index < 0 ||
1262 s->streams[rtsp_st->stream_index]->codec->codec_type ==
1263 AVMEDIA_TYPE_DATA))
090438cc 1264 continue;
0ad306bc 1265 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1266 "%s/TCP;", trans_pref);
895678f8 1267 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1268 av_strlcat(transport, "unicast;", sizeof(transport));
1269 av_strlcatf(transport, sizeof(transport),
1270 "interleaved=%d-%d",
1271 interleave, interleave + 1);
1272 interleave += 2;
1617ad97
FB
1273 }
1274
90abbdba 1275 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1276 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1277 "%s/UDP;multicast", trans_pref);
1617ad97 1278 }
69adcc4f
MS
1279 if (s->oformat) {
1280 av_strlcat(transport, ";mode=receive", sizeof(transport));
1281 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1282 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1283 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1284 snprintf(cmd, sizeof(cmd),
b6892136 1285 "Transport: %s\r\n",
b17d11c6 1286 transport);
76b0d03d
MS
1287 if (rt->accept_dynamic_rate)
1288 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
44b70ce5 1289 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1290 char real_res[41], real_csum[9];
1291 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1292 real_challenge);
1293 av_strlcatf(cmd, sizeof(cmd),
1294 "If-Match: %s\r\n"
1295 "RealChallenge2: %s, sd=%s\r\n",
1296 rt->session_id, real_res, real_csum);
1297 }
b17d11c6 1298 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1299 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1300 err = 1;
1301 goto fail;
7e6ca34f
RB
1302 } else if (reply->status_code != RTSP_STATUS_OK ||
1303 reply->nb_transports != 1) {
1617ad97
FB
1304 err = AVERROR_INVALIDDATA;
1305 goto fail;
1306 }
1307
1308 /* XXX: same protocol for all streams is required */
1309 if (i > 0) {
119b4668
RB
1310 if (reply->transports[0].lower_transport != rt->lower_transport ||
1311 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1312 err = AVERROR_INVALIDDATA;
1313 goto fail;
1314 }
1315 } else {
90abbdba 1316 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1317 rt->transport = reply->transports[0].transport;
1617ad97
FB
1318 }
1319
8c579c1c
MS
1320 /* Fail if the server responded with another lower transport mode
1321 * than what we requested. */
1322 if (reply->transports[0].lower_transport != lower_transport) {
1323 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1324 err = AVERROR_INVALIDDATA;
1325 goto fail;
1617ad97
FB
1326 }
1327
90abbdba
RB
1328 switch(reply->transports[0].lower_transport) {
1329 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1330 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1331 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1332 break;
115329f1 1333
c8965800 1334 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1335 char url[1024], options[30] = "";
c8965800 1336
9867aea5 1337 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
a92c30d7 1338 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1339 /* Use source address if specified */
1340 if (reply->transports[0].source[0]) {
1341 ff_url_join(url, sizeof(url), "rtp", NULL,
1342 reply->transports[0].source,
d8407339 1343 reply->transports[0].server_port_min, "%s", options);
619298a8 1344 } else {
7bac991f 1345 ff_url_join(url, sizeof(url), "rtp", NULL, host,
d8407339 1346 reply->transports[0].server_port_min, "%s", options);
619298a8 1347 }
c8965800 1348 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1349 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1350 err = AVERROR_INVALIDDATA;
1351 goto fail;
1617ad97 1352 }
9c8fa20d
MS
1353 /* Try to initialize the connection state in a
1354 * potential NAT router by sending dummy packets.
1355 * RTP/RTCP dummy packets are used for RDT, too.
1356 */
44b70ce5
MS
1357 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1358 CONFIG_RTPDEC)
bfc6db44 1359 ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1360 break;
c8965800
RB
1361 }
1362 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
6294d708 1363 char url[1024], namebuf[50], optbuf[20] = "";
7934b15d 1364 struct sockaddr_storage addr;
c8965800
RB
1365 int port, ttl;
1366
7934b15d
MS
1367 if (reply->transports[0].destination.ss_family) {
1368 addr = reply->transports[0].destination;
c8965800
RB
1369 port = reply->transports[0].port_min;
1370 ttl = reply->transports[0].ttl;
1371 } else {
7934b15d 1372 addr = rtsp_st->sdp_ip;
c8965800
RB
1373 port = rtsp_st->sdp_port;
1374 ttl = rtsp_st->sdp_ttl;
1375 }
6294d708
MS
1376 if (ttl > 0)
1377 snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
7934b15d
MS
1378 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1379 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1380 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
6294d708 1381 port, "%s", optbuf);
6f1b7b39 1382 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1383 &s->interrupt_callback, NULL) < 0) {
c8965800
RB
1384 err = AVERROR_INVALIDDATA;
1385 goto fail;
1617ad97
FB
1386 }
1387 break;
1388 }
c8965800 1389 }
d1ccf0e0 1390
ee0cb67f 1391 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1392 goto fail;
1617ad97
FB
1393 }
1394
62c3c8ca 1395 if (rt->nb_rtsp_streams && reply->timeout > 0)
30e79845
RB
1396 rt->timeout = reply->timeout;
1397
2e889ae4 1398 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1399 rt->need_subscription = 1;
1400
53620bba
RB
1401 return 0;
1402
1403fail:
aeb2de1c 1404 ff_rtsp_undo_setup(s);
53620bba
RB
1405 return err;
1406}
1407
b8c2c41d
JA
1408void ff_rtsp_close_connections(AVFormatContext *s)
1409{
1410 RTSPState *rt = s->priv_data;
e52a9145
AK
1411 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1412 ffurl_close(rt->rtsp_hd);
6217b645 1413 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1414}
1415
3307e6ea 1416int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1417{
1418 RTSPState *rt = s->priv_data;
921da217 1419 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
03f8fc08 1420 int port, err, tcp_fd;
354b7573 1421 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1422 int lower_transport_mask = 0;
2762a7a2 1423 char real_challenge[64] = "";
03f8fc08
MS
1424 struct sockaddr_storage peer;
1425 socklen_t peer_len = sizeof(peer);
57b5555c 1426
dbb06b8c
MS
1427 if (rt->rtp_port_max < rt->rtp_port_min) {
1428 av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1429 "than min port %d\n", rt->rtp_port_max,
1430 rt->rtp_port_min);
1431 return AVERROR(EINVAL);
1432 }
1433
57b5555c
MS
1434 if (!ff_network_init())
1435 return AVERROR(EIO);
eca4850c 1436
4fa57d52 1437 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1438 s->max_delay = s->iformat ? DEFAULT_REORDERING_DELAY : 0;
4fa57d52 1439
f5d33f52 1440 rt->control_transport = RTSP_MODE_PLAIN;
eca4850c
MS
1441 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1442 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1443 rt->control_transport = RTSP_MODE_TUNNEL;
1444 }
1445 /* Only pass through valid flags from here */
1446 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
eca4850c
MS
1447
1448redirect:
1449 lower_transport_mask = rt->lower_transport_mask;
53620bba 1450 /* extract hostname and port */
f3bfe388 1451 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1452 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1453 if (*auth) {
aa8bf2fb 1454 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1455 }
53620bba
RB
1456 if (port < 0)
1457 port = RTSP_DEFAULT_PORT;
1458
90abbdba 1459 if (!lower_transport_mask)
2a1d51c5 1460 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1461
3e24c770 1462 if (s->oformat) {
b7dc88fc
MS
1463 /* Only UDP or TCP - UDP multicast isn't supported. */
1464 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1465 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1466 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1467 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1468 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1469 err = AVERROR(EINVAL);
1470 goto fail;
1471 }
1472 }
1473
4bc5cc23
MS
1474 /* Construct the URI used in request; this is similar to s->filename,
1475 * but with authentication credentials removed and RTSP specific options
1476 * stripped out. */
1477 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1478 host, port, "%s", path);
1479
f5d33f52
JA
1480 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1481 /* set up initial handshake for tunneling */
1482 char httpname[1024];
1483 char sessioncookie[17];
1484 char headers[1024];
1485
10ed37b5 1486 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1487 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1488 av_get_random_seed(), av_get_random_seed());
1489
1490 /* GET requests */
6f1b7b39
MS
1491 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1492 &s->interrupt_callback) < 0) {
f5d33f52
JA
1493 err = AVERROR(EIO);
1494 goto fail;
1495 }
1496
1497 /* generate GET headers */
1498 snprintf(headers, sizeof(headers),
1499 "x-sessioncookie: %s\r\n"
1500 "Accept: application/x-rtsp-tunnelled\r\n"
1501 "Pragma: no-cache\r\n"
1502 "Cache-Control: no-cache\r\n",
1503 sessioncookie);
196bf28c 1504 av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
f5d33f52
JA
1505
1506 /* complete the connection */
ddffc2fd 1507 if (ffurl_connect(rt->rtsp_hd, NULL)) {
f5d33f52
JA
1508 err = AVERROR(EIO);
1509 goto fail;
1510 }
1511
1512 /* POST requests */
6f1b7b39
MS
1513 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
1514 &s->interrupt_callback) < 0 ) {
f5d33f52
JA
1515 err = AVERROR(EIO);
1516 goto fail;
1517 }
1518
1519 /* generate POST headers */
1520 snprintf(headers, sizeof(headers),
1521 "x-sessioncookie: %s\r\n"
1522 "Content-Type: application/x-rtsp-tunnelled\r\n"
1523 "Pragma: no-cache\r\n"
1524 "Cache-Control: no-cache\r\n"
1525 "Content-Length: 32767\r\n"
1526 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1527 sessioncookie);
196bf28c 1528 av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
6149485f 1529 av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
f5d33f52 1530
a8ead332
MS
1531 /* Initialize the authentication state for the POST session. The HTTP
1532 * protocol implementation doesn't properly handle multi-pass
1533 * authentication for POST requests, since it would require one of
1534 * the following:
1535 * - implementing Expect: 100-continue, which many HTTP servers
1536 * don't support anyway, even less the RTSP servers that do HTTP
1537 * tunneling
1538 * - sending the whole POST data until getting a 401 reply specifying
1539 * what authentication method to use, then resending all that data
1540 * - waiting for potential 401 replies directly after sending the
1541 * POST header (waiting for some unspecified time)
1542 * Therefore, we copy the full auth state, which works for both basic
1543 * and digest. (For digest, we would have to synchronize the nonce
1544 * count variable between the two sessions, if we'd do more requests
1545 * with the original session, though.)
1546 */
1547 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1548
9290f15d 1549 /* complete the connection */
ddffc2fd 1550 if (ffurl_connect(rt->rtsp_hd_out, NULL)) {
9290f15d
MS
1551 err = AVERROR(EIO);
1552 goto fail;
1553 }
f5d33f52 1554 } else {
48e77473 1555 /* open the tcp connection */
41874d0a 1556 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
6f1b7b39 1557 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
ddffc2fd 1558 &s->interrupt_callback, NULL) < 0) {
41874d0a
JA
1559 err = AVERROR(EIO);
1560 goto fail;
1561 }
00e4a1f4 1562 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1563 }
53620bba
RB
1564 rt->seq = 0;
1565
1869ea03 1566 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1567 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1568 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1569 NULL, 0, NI_NUMERICHOST);
1570 }
1571
c8965800
RB
1572 /* request options supported by the server; this also detects server
1573 * type */
1cf151e9 1574 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1575 cmd[0] = 0;
2e889ae4 1576 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1577 av_strlcat(cmd,
f75e3da5 1578 /*
1cf151e9
RB
1579 * The following entries are required for proper
1580 * streaming from a Realmedia server. They are
1581 * interdependent in some way although we currently
1582 * don't quite understand how. Values were copied
1583 * from mplayer SVN r23589.
f75e3da5
DB
1584 * ClientChallenge is a 16-byte ID in hex
1585 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1586 */
1587 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1588 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1589 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1590 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1591 sizeof(cmd));
b17d11c6 1592 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1593 if (reply->status_code != RTSP_STATUS_OK) {
1594 err = AVERROR_INVALIDDATA;
1595 goto fail;
1596 }
1597
1598 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1599 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1600 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1601 continue;
bb3244de 1602 } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
7a86bafa 1603 rt->server_type = RTSP_SERVER_WMS;
c8965800 1604 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1605 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1606 break;
1607 }
1608
44b70ce5 1609 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1610 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1611 else if (CONFIG_RTSP_MUXER)
c2688f3a 1612 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1613 if (err)
53620bba 1614 goto fail;
53620bba 1615
8a8754d8 1616 do {
c8965800
RB
1617 int lower_transport = ff_log2_tab[lower_transport_mask &
1618 ~(lower_transport_mask - 1)];
8a8754d8 1619
fef5649a 1620 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1621 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1622 real_challenge : NULL);
8a8754d8 1623 if (err < 0)
7e6ca34f 1624 goto fail;
90abbdba
RB
1625 lower_transport_mask &= ~(1 << lower_transport);
1626 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1627 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1628 goto fail;
1629 }
1630 } while (err);
53620bba 1631
2762a7a2
MS
1632 rt->lower_transport_mask = lower_transport_mask;
1633 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1634 rt->state = RTSP_STATE_IDLE;
c8965800 1635 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1636 return 0;
1637 fail:
3307e6ea 1638 ff_rtsp_close_streams(s);
b8c2c41d 1639 ff_rtsp_close_connections(s);
35cfd646 1640 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1641 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1642 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1643 reply->status_code,
1644 s->filename);
1645 goto redirect;
1646 }
57b5555c 1647 ff_network_close();
1617ad97
FB
1648 return err;
1649}
2e802e38 1650#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1651
44b70ce5 1652#if CONFIG_RTPDEC
0e59034e 1653static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1654 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1655{
1656 RTSPState *rt = s->priv_data;
1657 RTSPStream *rtsp_st;
a8475bbd
LB
1658 int n, i, ret, tcp_fd, timeout_cnt = 0;
1659 int max_p = 0;
1660 struct pollfd *p = rt->p;
0e59034e 1661
c8965800 1662 for (;;) {
9957cdbf 1663 if (ff_check_interrupt(&s->interrupt_callback))
c76374c6 1664 return AVERROR_EXIT;
321259c1
MS
1665 if (wait_end && wait_end - av_gettime() < 0)
1666 return AVERROR(EAGAIN);
a8475bbd 1667 max_p = 0;
0e59034e 1668 if (rt->rtsp_hd) {
1869ea03 1669 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1670 p[max_p].fd = tcp_fd;
1671 p[max_p++].events = POLLIN;
0e59034e 1672 } else {
0e59034e
RB
1673 tcp_fd = -1;
1674 }
c8965800 1675 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1676 rtsp_st = rt->rtsp_streams[i];
1677 if (rtsp_st->rtp_handle) {
1869ea03 1678 p[max_p].fd = ffurl_get_file_handle(rtsp_st->rtp_handle);
a8475bbd 1679 p[max_p++].events = POLLIN;
bfc6db44 1680 p[max_p].fd = ff_rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
a8475bbd 1681 p[max_p++].events = POLLIN;
0e59034e
RB
1682 }
1683 }
a8475bbd 1684 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1685 if (n > 0) {
a8475bbd 1686 int j = 1 - (tcp_fd == -1);
9cba6f5f 1687 timeout_cnt = 0;
c8965800 1688 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1689 rtsp_st = rt->rtsp_streams[i];
1690 if (rtsp_st->rtp_handle) {
a8475bbd 1691 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1692 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1693 if (ret > 0) {
1694 *prtsp_st = rtsp_st;
1695 return ret;
1696 }
1697 }
a8475bbd 1698 j+=2;
0e59034e
RB
1699 }
1700 }
5fe8021a 1701#if CONFIG_RTSP_DEMUXER
a8475bbd 1702 if (tcp_fd != -1 && p[0].revents & POLLIN) {
0e59034e
RB
1703 RTSPMessageHeader reply;
1704
3df54c6b 1705 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1706 if (ret < 0)
1707 return ret;
0e59034e 1708 /* XXX: parse message */
c02fd3d2 1709 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1710 return 0;
1711 }
5fe8021a 1712#endif
9cba6f5f 1713 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1714 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1715 } else if (n < 0 && errno != EINTR)
1716 return AVERROR(errno);
0e59034e
RB
1717 }
1718}
1719
0526c6f7 1720int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1721{
1722 RTSPState *rt = s->priv_data;
1723 int ret, len;
321259c1
MS
1724 RTSPStream *rtsp_st, *first_queue_st = NULL;
1725 int64_t wait_end = 0;
0e59034e 1726
b20359f5
JA
1727 if (rt->nb_byes == rt->nb_rtsp_streams)
1728 return AVERROR_EOF;
1729
0e59034e
RB
1730 /* get next frames from the same RTP packet */
1731 if (rt->cur_transport_priv) {
c8965800 1732 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1733 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1734 } else
bfc6db44 1735 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
0e59034e
RB
1736 if (ret == 0) {
1737 rt->cur_transport_priv = NULL;
1738 return 0;
1739 } else if (ret == 1) {
1740 return 0;
c8965800 1741 } else
0e59034e 1742 rt->cur_transport_priv = NULL;
0e59034e
RB
1743 }
1744
321259c1
MS
1745 if (rt->transport == RTSP_TRANSPORT_RTP) {
1746 int i;
1747 int64_t first_queue_time = 0;
1748 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1749 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1750 int64_t queue_time;
1751 if (!rtpctx)
1752 continue;
1753 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1754 if (queue_time && (queue_time - first_queue_time < 0 ||
1755 !first_queue_time)) {
1756 first_queue_time = queue_time;
1757 first_queue_st = rt->rtsp_streams[i];
1758 }
1759 }
1760 if (first_queue_time)
1761 wait_end = first_queue_time + s->max_delay;
1762 }
1763
0e59034e
RB
1764 /* read next RTP packet */
1765 redo:
96a7c975
MS
1766 if (!rt->recvbuf) {
1767 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1768 if (!rt->recvbuf)
1769 return AVERROR(ENOMEM);
1770 }
1771
0e59034e
RB
1772 switch(rt->lower_transport) {
1773 default:
5fe8021a 1774#if CONFIG_RTSP_DEMUXER
0e59034e 1775 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1776 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1777 break;
5fe8021a 1778#endif
0e59034e
RB
1779 case RTSP_LOWER_TRANSPORT_UDP:
1780 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1781 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1782 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
bfc6db44 1783 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
0e59034e
RB
1784 break;
1785 }
321259c1
MS
1786 if (len == AVERROR(EAGAIN) && first_queue_st &&
1787 rt->transport == RTSP_TRANSPORT_RTP) {
1788 rtsp_st = first_queue_st;
bfc6db44 1789 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
1790 goto end;
1791 }
0e59034e
RB
1792 if (len < 0)
1793 return len;
1794 if (len == 0)
1795 return AVERROR_EOF;
c8965800 1796 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1797 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1798 } else {
bfc6db44 1799 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1800 if (ret < 0) {
1801 /* Either bad packet, or a RTCP packet. Check if the
1802 * first_rtcp_ntp_time field was initialized. */
1803 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1804 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1805 /* first_rtcp_ntp_time has been initialized for this stream,
1806 * copy the same value to all other uninitialized streams,
1807 * in order to map their timestamp origin to the same ntp time
1808 * as this one. */
1809 int i;
3a1cdcc7
MS
1810 AVStream *st = NULL;
1811 if (rtsp_st->stream_index >= 0)
1812 st = s->streams[rtsp_st->stream_index];
2cab6b48 1813 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1814 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1815 AVStream *st2 = NULL;
1816 if (rt->rtsp_streams[i]->stream_index >= 0)
1817 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1818 if (rtpctx2 && st && st2 &&
1819 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1820 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1821 rtpctx2->rtcp_ts_offset = av_rescale_q(
1822 rtpctx->rtcp_ts_offset, st->time_base,
1823 st2->time_base);
1824 }
2cab6b48
MS
1825 }
1826 }
b20359f5
JA
1827 if (ret == -RTCP_BYE) {
1828 rt->nb_byes++;
1829
1830 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1831 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1832
1833 if (rt->nb_byes == rt->nb_rtsp_streams)
1834 return AVERROR_EOF;
1835 }
2cab6b48
MS
1836 }
1837 }
321259c1 1838end:
0e59034e
RB
1839 if (ret < 0)
1840 goto redo;
c8965800 1841 if (ret == 1)
0e59034e
RB
1842 /* more packets may follow, so we save the RTP context */
1843 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1844
1845 return ret;
1846}
44b70ce5 1847#endif /* CONFIG_RTPDEC */
0e59034e 1848
44b70ce5 1849#if CONFIG_SDP_DEMUXER
cb1fdc61 1850static int sdp_probe(AVProbeData *p1)
93ced3e8 1851{
0e1ceacd 1852 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1853
3fbd12d1 1854 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1855 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1856 if (p + sizeof("c=IN IP") - 1 < p_end &&
1857 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1858 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1859
c8965800 1860 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1861 if (++p >= p_end)
cb1fdc61 1862 break;
cb1fdc61
FB
1863 if (*p == '\r')
1864 p++;
1865 }
93ced3e8
FB
1866 return 0;
1867}
1868
6e9651d1 1869static int sdp_read_header(AVFormatContext *s)
93ced3e8 1870{
8b1ab7bf 1871 RTSPState *rt = s->priv_data;
93ced3e8
FB
1872 RTSPStream *rtsp_st;
1873 int size, i, err;
1874 char *content;
1875 char url[1024];
1876
57b5555c
MS
1877 if (!ff_network_init())
1878 return AVERROR(EIO);
1879
4fa57d52 1880 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1881 s->max_delay = DEFAULT_REORDERING_DELAY;
4fa57d52 1882
93ced3e8
FB
1883 /* read the whole sdp file */
1884 /* XXX: better loading */
1885 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 1886 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1887 if (size <= 0) {
1888 av_free(content);
1889 return AVERROR_INVALIDDATA;
1890 }
1891 content[size] ='\0';
1892
f81c7ac7 1893 err = ff_sdp_parse(s, content);
93ced3e8 1894 av_free(content);
f81c7ac7 1895 if (err) goto fail;
93ced3e8
FB
1896
1897 /* open each RTP stream */
c8965800 1898 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1899 char namebuf[50];
8b1ab7bf 1900 rtsp_st = rt->rtsp_streams[i];
115329f1 1901
3fbd12d1
MS
1902 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1903 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1904 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1905 namebuf, rtsp_st->sdp_port,
51369f28
MS
1906 "?localport=%d&ttl=%d&connect=%d", rtsp_st->sdp_port,
1907 rtsp_st->sdp_ttl,
1908 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0);
6f1b7b39 1909 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1910 &s->interrupt_callback, NULL) < 0) {
93ced3e8
FB
1911 err = AVERROR_INVALIDDATA;
1912 goto fail;
1913 }
ee0cb67f 1914 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1915 goto fail;
93ced3e8
FB
1916 }
1917 return 0;
c8965800 1918fail:
3307e6ea 1919 ff_rtsp_close_streams(s);
57b5555c 1920 ff_network_close();
93ced3e8
FB
1921 return err;
1922}
1923
93ced3e8
FB
1924static int sdp_read_close(AVFormatContext *s)
1925{
3307e6ea 1926 ff_rtsp_close_streams(s);
57b5555c 1927 ff_network_close();
93ced3e8
FB
1928 return 0;
1929}
1930
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1931static const AVClass sdp_demuxer_class = {
1932 .class_name = "SDP demuxer",
1933 .item_name = av_default_item_name,
1934 .option = sdp_options,
1935 .version = LIBAVUTIL_VERSION_INT,
1936};
1937
c6610a21 1938AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
1939 .name = "sdp",
1940 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
1941 .priv_data_size = sizeof(RTSPState),
1942 .read_probe = sdp_probe,
1943 .read_header = sdp_read_header,
1944 .read_packet = ff_rtsp_fetch_packet,
1945 .read_close = sdp_read_close,
17934c18 1946 .priv_class = &sdp_demuxer_class,
93ced3e8 1947};
44b70ce5 1948#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1949
44b70ce5 1950#if CONFIG_RTP_DEMUXER
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MS
1951static int rtp_probe(AVProbeData *p)
1952{
1953 if (av_strstart(p->filename, "rtp:", NULL))
1954 return AVPROBE_SCORE_MAX;
1955 return 0;
1956}
1957
6e9651d1 1958static int rtp_read_header(AVFormatContext *s)
44594cc7
MS
1959{
1960 uint8_t recvbuf[1500];
1961 char host[500], sdp[500];
1962 int ret, port;
1963 URLContext* in = NULL;
1964 int payload_type;
a92be9b8 1965 AVCodecContext codec = { 0 };
44594cc7 1966 struct sockaddr_storage addr;
ae628ec1 1967 AVIOContext pb;
44594cc7 1968 socklen_t addrlen = sizeof(addr);
30266038 1969 RTSPState *rt = s->priv_data;
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MS
1970
1971 if (!ff_network_init())
1972 return AVERROR(EIO);
1973
6f1b7b39 1974 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ,
ddffc2fd 1975 &s->interrupt_callback, NULL);
44594cc7
MS
1976 if (ret)
1977 goto fail;
1978
1979 while (1) {
bc371aca 1980 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
44594cc7
MS
1981 if (ret == AVERROR(EAGAIN))
1982 continue;
1983 if (ret < 0)
1984 goto fail;
1985 if (ret < 12) {
1986 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1987 continue;
1988 }
1989
1990 if ((recvbuf[0] & 0xc0) != 0x80) {
1991 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1992 "received\n");
1993 continue;
1994 }
1995
298a587f 1996 if (RTP_PT_IS_RTCP(recvbuf[1]))
f3a094f2
MS
1997 continue;
1998
44594cc7
MS
1999 payload_type = recvbuf[1] & 0x7f;
2000 break;
2001 }
1869ea03 2002 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 2003 ffurl_close(in);
44594cc7
MS
2004 in = NULL;
2005
44594cc7
MS
2006 if (ff_rtp_get_codec_info(&codec, payload_type)) {
2007 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
2008 "without an SDP file describing it\n",
2009 payload_type);
2010 goto fail;
2011 }
2012 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
2013 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
2014 "properly you need an SDP file "
2015 "describing it\n");
2016 }
2017
2018 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
2019 NULL, 0, s->filename);
2020
2021 snprintf(sdp, sizeof(sdp),
2022 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
2023 addr.ss_family == AF_INET ? 4 : 6, host,
2024 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
2025 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
2026 port, payload_type);
2027 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
2028
e731b8d8 2029 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
44594cc7
MS
2030 s->pb = &pb;
2031
2032 /* sdp_read_header initializes this again */
2033 ff_network_close();
2034
30266038
MS
2035 rt->media_type_mask = (1 << (AVMEDIA_TYPE_DATA+1)) - 1;
2036
6e9651d1 2037 ret = sdp_read_header(s);
44594cc7
MS
2038 s->pb = NULL;
2039 return ret;
2040
2041fail:
2042 if (in)
e52a9145 2043 ffurl_close(in);
44594cc7
MS
2044 ff_network_close();
2045 return ret;
2046}
2047
51369f28
MS
2048static const AVClass rtp_demuxer_class = {
2049 .class_name = "RTP demuxer",
2050 .item_name = av_default_item_name,
2051 .option = rtp_options,
2052 .version = LIBAVUTIL_VERSION_INT,
2053};
2054
c6610a21 2055AVInputFormat ff_rtp_demuxer = {
dfc2c4d9
AK
2056 .name = "rtp",
2057 .long_name = NULL_IF_CONFIG_SMALL("RTP input format"),
2058 .priv_data_size = sizeof(RTSPState),
2059 .read_probe = rtp_probe,
2060 .read_header = rtp_read_header,
2061 .read_packet = ff_rtsp_fetch_packet,
2062 .read_close = sdp_read_close,
17934c18
MS
2063 .flags = AVFMT_NOFILE,
2064 .priv_class = &rtp_demuxer_class,
44594cc7 2065};
44b70ce5 2066#endif /* CONFIG_RTP_DEMUXER */