rtpdec: Remove an unused include
[libav.git] / libavformat / rtsp.c
CommitLineData
1617ad97 1/*
93ced3e8 2 * RTSP/SDP client
406792e7 3 * Copyright (c) 2002 Fabrice Bellard
1617ad97 4 *
2912e87a 5 * This file is part of Libav.
b78e7197 6 *
2912e87a 7 * Libav is free software; you can redistribute it and/or
1617ad97
FB
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
1617ad97 11 *
2912e87a 12 * Libav is distributed in the hope that it will be useful,
1617ad97
FB
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
2912e87a 18 * License along with Libav; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1617ad97 20 */
245976da 21
f9337897 22#include "libavutil/base64.h"
245976da 23#include "libavutil/avstring.h"
6a5d31ac 24#include "libavutil/intreadwrite.h"
0ebcdf5c 25#include "libavutil/mathematics.h"
9fcae973 26#include "libavutil/parseutils.h"
f5d33f52 27#include "libavutil/random_seed.h"
d2d67e42 28#include "libavutil/dict.h"
d450cc4f 29#include "libavutil/opt.h"
c4ef6a3e 30#include "libavutil/time.h"
1617ad97 31#include "avformat.h"
e731b8d8 32#include "avio_internal.h"
1617ad97 33
a8475bbd
LB
34#if HAVE_POLL_H
35#include <poll.h>
6ad1c9c9 36#endif
e4a9e3cc 37#include "internal.h"
42572ef5 38#include "network.h"
cbfa66d0 39#include "os_support.h"
f5d33f52 40#include "http.h"
c971ff19 41#include "rtsp.h"
1617ad97 42
302879cb 43#include "rtpdec.h"
e9dea59f 44#include "rdt.h"
965a3ddb 45#include "rtpdec_formats.h"
a493f80a 46#include "rtpenc_chain.h"
5652bb94 47#include "url.h"
17fff881 48#include "rtpenc.h"
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" }, \
a8ad6ffa
JO
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 { "listen", "Wait for incoming connections", 0, AV_OPT_TYPE_CONST, {RTSP_FLAG_LISTEN}, 0, 0, DEC, "rtsp_flags" }
3a6765fb 69
f011fcd6
JB
70#define RTSP_MEDIATYPE_OPTS(name, longname) \
71 { name, longname, OFFSET(media_type_mask), AV_OPT_TYPE_FLAGS, { (1 << (AVMEDIA_TYPE_DATA+1)) - 1 }, INT_MIN, INT_MAX, DEC, "allowed_media_types" }, \
72 { "video", "Video", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_VIDEO}, 0, 0, DEC, "allowed_media_types" }, \
73 { "audio", "Audio", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_AUDIO}, 0, 0, DEC, "allowed_media_types" }, \
74 { "data", "Data", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_DATA}, 0, 0, DEC, "allowed_media_types" }
75
17fff881 76const AVOption ff_rtsp_options[] = {
2c9aa024 77 { "initial_pause", "Don't start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_INT, {0}, 0, 1, DEC },
5354a904 78 FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags),
eca4850c
MS
79 { "rtsp_transport", "RTSP transport protocols", OFFSET(lower_transport_mask), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, DEC|ENC, "rtsp_transport" }, \
80 { "udp", "UDP", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_UDP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
81 { "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
82 { "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, "rtsp_transport" },
83 { "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {(1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, "rtsp_transport" },
3a6765fb 84 RTSP_FLAG_OPTS("rtsp_flags", "RTSP flags"),
f011fcd6 85 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
dbb06b8c
MS
86 { "min_port", "Minimum local UDP port", OFFSET(rtp_port_min), AV_OPT_TYPE_INT, {RTSP_RTP_PORT_MIN}, 0, 65535, DEC|ENC },
87 { "max_port", "Maximum local UDP port", OFFSET(rtp_port_max), AV_OPT_TYPE_INT, {RTSP_RTP_PORT_MAX}, 0, 65535, DEC|ENC },
a8ad6ffa 88 { "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
89 { NULL },
90};
91
51369f28
MS
92static const AVOption sdp_options[] = {
93 RTSP_FLAG_OPTS("sdp_flags", "SDP flags"),
f011fcd6 94 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
51369f28
MS
95 { NULL },
96};
97
98static const AVOption rtp_options[] = {
99 RTSP_FLAG_OPTS("rtp_flags", "RTP flags"),
100 { NULL },
101};
102
1ef36a70
RB
103static void get_word_until_chars(char *buf, int buf_size,
104 const char *sep, const char **pp)
1617ad97
FB
105{
106 const char *p;
107 char *q;
108
109 p = *pp;
30619e6e 110 p += strspn(p, SPACE_CHARS);
1617ad97
FB
111 q = buf;
112 while (!strchr(sep, *p) && *p != '\0') {
113 if ((q - buf) < buf_size - 1)
114 *q++ = *p;
115 p++;
116 }
117 if (buf_size > 0)
118 *q = '\0';
119 *pp = p;
120}
121
1ef36a70
RB
122static void get_word_sep(char *buf, int buf_size, const char *sep,
123 const char **pp)
1617ad97 124{
1ef36a70
RB
125 if (**pp == '/') (*pp)++;
126 get_word_until_chars(buf, buf_size, sep, pp);
127}
1617ad97 128
1ef36a70
RB
129static void get_word(char *buf, int buf_size, const char **pp)
130{
131 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
132}
133
8bf0f969
MS
134/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
135 * and end time.
136 * Used for seeking in the rtp stream.
137 */
138static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
139{
140 char buf[256];
141
142 p += strspn(p, SPACE_CHARS);
143 if (!av_stristart(p, "npt=", &p))
144 return;
145
146 *start = AV_NOPTS_VALUE;
147 *end = AV_NOPTS_VALUE;
148
149 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 150 av_parse_time(start, buf, 1);
8bf0f969
MS
151 if (*p == '-') {
152 p++;
153 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 154 av_parse_time(end, buf, 1);
8bf0f969
MS
155 }
156// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
157// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
158}
159
160static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
161{
a92be9b8 162 struct addrinfo hints = { 0 }, *ai = NULL;
8bf0f969
MS
163 hints.ai_flags = AI_NUMERICHOST;
164 if (getaddrinfo(buf, NULL, &hints, &ai))
165 return -1;
166 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
167 freeaddrinfo(ai);
168 return 0;
169}
170
44b70ce5 171#if CONFIG_RTPDEC
003eb642
MS
172static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
173 RTSPStream *rtsp_st, AVCodecContext *codec)
174{
175 if (!handler)
176 return;
177 codec->codec_id = handler->codec_id;
178 rtsp_st->dynamic_handler = handler;
4b3dc857 179 if (handler->alloc) {
9261e6cf 180 rtsp_st->dynamic_protocol_context = handler->alloc();
4b3dc857
MS
181 if (!rtsp_st->dynamic_protocol_context)
182 rtsp_st->dynamic_handler = NULL;
183 }
003eb642
MS
184}
185
c8965800 186/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 187static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 188 AVStream *st, RTSPStream *rtsp_st,
c8965800 189 int payload_type, const char *p)
93ced3e8 190{
86b6e387 191 AVCodecContext *codec = st->codec;
93ced3e8 192 char buf[256];
d1ccf0e0
RD
193 int i;
194 AVCodec *c;
7b49ce2e 195 const char *c_name;
93ced3e8 196
d1ccf0e0 197 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
198 * see if we can handle this kind of payload.
199 * The space should normally not be there but some Real streams or
200 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
201 * have a trailing space. */
202 get_word_sep(buf, sizeof(buf), "/ ", &p);
6099543a
MS
203 if (payload_type < RTP_PT_PRIVATE) {
204 /* We are in a standard case
205 * (from http://www.iana.org/assignments/rtp-parameters). */
206 /* search into AVRtpPayloadTypes[] */
207 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
208 }
209
36ef5369 210 if (codec->codec_id == AV_CODEC_ID_NONE) {
003eb642
MS
211 RTPDynamicProtocolHandler *handler =
212 ff_rtp_handler_find_by_name(buf, codec->codec_type);
213 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
214 /* If no dynamic handler was found, check with the list of standard
215 * allocated types, if such a stream for some reason happens to
216 * use a private payload type. This isn't handled in rtpdec.c, since
217 * the format name from the rtpmap line never is passed into rtpdec. */
218 if (!rtsp_st->dynamic_handler)
219 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
220 }
221
222 c = avcodec_find_decoder(codec->codec_id);
223 if (c && c->name)
7b49ce2e 224 c_name = c->name;
d1ccf0e0 225 else
170870b7 226 c_name = "(null)";
d1ccf0e0 227
7515ed0c
RB
228 get_word_sep(buf, sizeof(buf), "/", &p);
229 i = atoi(buf);
230 switch (codec->codec_type) {
72415b2a 231 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
232 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
233 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
234 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
235 if (i > 0) {
236 codec->sample_rate = i;
c3f9ebf7 237 avpriv_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
238 get_word_sep(buf, sizeof(buf), "/", &p);
239 i = atoi(buf);
240 if (i > 0)
241 codec->channels = i;
242 // TODO: there is a bug here; if it is a mono stream, and
243 // less than 22000Hz, faad upconverts to stereo and twice
244 // the frequency. No problem, but the sample rate is being
245 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 246 }
7515ed0c
RB
247 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
248 codec->sample_rate);
249 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
250 codec->channels);
251 break;
72415b2a 252 case AVMEDIA_TYPE_VIDEO:
7515ed0c 253 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387 254 if (i > 0)
c3f9ebf7 255 avpriv_set_pts_info(st, 32, 1, i);
7515ed0c
RB
256 break;
257 default:
258 break;
259 }
25836606
MS
260 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->init)
261 rtsp_st->dynamic_handler->init(s, st->index,
262 rtsp_st->dynamic_protocol_context);
7515ed0c 263 return 0;
93ced3e8
FB
264}
265
c2bfd816 266/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
267 * is broken out as a function because it is used in rtp_h264.c, which is
268 * forthcoming. */
3307e6ea 269int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 270 char *value, int value_size)
d0deedcb 271{
30619e6e 272 *p += strspn(*p, SPACE_CHARS);
c8965800 273 if (**p) {
d0deedcb
RM
274 get_word_sep(attr, attr_size, "=", p);
275 if (**p == '=')
276 (*p)++;
277 get_word_sep(value, value_size, ";", p);
278 if (**p == ';')
279 (*p)++;
280 return 1;
281 }
282 return 0;
283}
284
93ced3e8
FB
285typedef struct SDPParseState {
286 /* SDP only */
3fbd12d1 287 struct sockaddr_storage default_ip;
c8965800
RB
288 int default_ttl;
289 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
290} SDPParseState;
291
292static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
293 int letter, const char *buf)
294{
8b1ab7bf 295 RTSPState *rt = s->priv_data;
1617ad97
FB
296 char buf1[64], st_type[64];
297 const char *p;
72415b2a 298 enum AVMediaType codec_type;
fb65d2ca 299 int payload_type, i;
1617ad97
FB
300 AVStream *st;
301 RTSPStream *rtsp_st;
3fbd12d1 302 struct sockaddr_storage sdp_ip;
93ced3e8
FB
303 int ttl;
304
dfd2a005 305 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
306
307 p = buf;
cb760a47
RB
308 if (s1->skip_media && letter != 'm')
309 return;
c8965800 310 switch (letter) {
93ced3e8
FB
311 case 'c':
312 get_word(buf1, sizeof(buf1), &p);
313 if (strcmp(buf1, "IN") != 0)
314 return;
315 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 316 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
317 return;
318 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 319 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
320 return;
321 ttl = 16;
322 if (*p == '/') {
323 p++;
324 get_word_sep(buf1, sizeof(buf1), "/", &p);
325 ttl = atoi(buf1);
326 }
327 if (s->nb_streams == 0) {
328 s1->default_ip = sdp_ip;
329 s1->default_ttl = ttl;
330 } else {
d9c0510e 331 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
332 rtsp_st->sdp_ip = sdp_ip;
333 rtsp_st->sdp_ttl = ttl;
334 }
335 break;
1617ad97 336 case 's':
d2d67e42 337 av_dict_set(&s->metadata, "title", p, 0);
1617ad97
FB
338 break;
339 case 'i':
340 if (s->nb_streams == 0) {
d2d67e42 341 av_dict_set(&s->metadata, "comment", p, 0);
1617ad97
FB
342 break;
343 }
344 break;
345 case 'm':
346 /* new stream */
cb760a47 347 s1->skip_media = 0;
f011fcd6 348 codec_type = AVMEDIA_TYPE_UNKNOWN;
1617ad97
FB
349 get_word(st_type, sizeof(st_type), &p);
350 if (!strcmp(st_type, "audio")) {
72415b2a 351 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 352 } else if (!strcmp(st_type, "video")) {
72415b2a 353 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 354 } else if (!strcmp(st_type, "application")) {
72415b2a 355 codec_type = AVMEDIA_TYPE_DATA;
f011fcd6
JB
356 }
357 if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) {
cb760a47 358 s1->skip_media = 1;
1617ad97
FB
359 return;
360 }
1617ad97
FB
361 rtsp_st = av_mallocz(sizeof(RTSPStream));
362 if (!rtsp_st)
363 return;
8b1ab7bf
FB
364 rtsp_st->stream_index = -1;
365 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
366
367 rtsp_st->sdp_ip = s1->default_ip;
368 rtsp_st->sdp_ttl = s1->default_ttl;
369
93ced3e8
FB
370 get_word(buf1, sizeof(buf1), &p); /* port */
371 rtsp_st->sdp_port = atoi(buf1);
372
373 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 374
93ced3e8
FB
375 /* XXX: handle list of formats */
376 get_word(buf1, sizeof(buf1), &p); /* format list */
377 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 378
7ed19d7f 379 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf 380 /* no corresponding stream */
45600148
MS
381 } else if (rt->server_type == RTSP_SERVER_WMS &&
382 codec_type == AVMEDIA_TYPE_DATA) {
383 /* RTX stream, a stream that carries all the other actual
384 * audio/video streams. Don't expose this to the callers. */
8b1ab7bf 385 } else {
84ad31ff 386 st = avformat_new_stream(s, NULL);
8b1ab7bf
FB
387 if (!st)
388 return;
84ad31ff 389 st->id = rt->nb_rtsp_streams - 1;
8b1ab7bf 390 rtsp_st->stream_index = st->index;
01f4895c 391 st->codec->codec_type = codec_type;
d1ccf0e0 392 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 393 RTPDynamicProtocolHandler *handler;
8b1ab7bf 394 /* if standard payload type, we can find the codec right now */
bf6d9818 395 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
396 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
397 st->codec->sample_rate > 0)
c3f9ebf7 398 avpriv_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
399 /* Even static payload types may need a custom depacketizer */
400 handler = ff_rtp_handler_find_by_id(
401 rtsp_st->sdp_payload_type, st->codec->codec_type);
402 init_rtp_handler(handler, rtsp_st, st->codec);
25836606
MS
403 if (handler && handler->init)
404 handler->init(s, st->index,
405 rtsp_st->dynamic_protocol_context);
8b1ab7bf
FB
406 }
407 }
1617ad97 408 /* put a default control url */
00eb13e0 409 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 410 sizeof(rtsp_st->control_url));
1617ad97
FB
411 break;
412 case 'a':
00eb13e0
AS
413 if (av_strstart(p, "control:", &p)) {
414 if (s->nb_streams == 0) {
415 if (!strncmp(p, "rtsp://", 7))
416 av_strlcpy(rt->control_uri, p,
417 sizeof(rt->control_uri));
418 } else {
0b6a7ff4
MS
419 char proto[32];
420 /* get the control url */
d9c0510e 421 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 422
0b6a7ff4
MS
423 /* XXX: may need to add full url resolution */
424 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
425 NULL, NULL, 0, p);
426 if (proto[0] == '\0') {
427 /* relative control URL */
428 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
429 av_strlcat(rtsp_st->control_url, "/",
430 sizeof(rtsp_st->control_url));
431 av_strlcat(rtsp_st->control_url, p,
432 sizeof(rtsp_st->control_url));
433 } else
434 av_strlcpy(rtsp_st->control_url, p,
435 sizeof(rtsp_st->control_url));
00eb13e0 436 }
83d14c85 437 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 438 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 439 get_word(buf1, sizeof(buf1), &p);
93ced3e8 440 payload_type = atoi(buf1);
d9c0510e 441 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
45600148
MS
442 if (rtsp_st->stream_index >= 0) {
443 st = s->streams[rtsp_st->stream_index];
444 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
445 }
7fc8ac7f
JA
446 } else if (av_strstart(p, "fmtp:", &p) ||
447 av_strstart(p, "framesize:", &p)) {
93ced3e8 448 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
449 // let dynamic protocol handlers have a stab at the line.
450 get_word(buf1, sizeof(buf1), &p);
451 payload_type = atoi(buf1);
d9c0510e
MS
452 for (i = 0; i < rt->nb_rtsp_streams; i++) {
453 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
454 if (rtsp_st->sdp_payload_type == payload_type &&
455 rtsp_st->dynamic_handler &&
456 rtsp_st->dynamic_handler->parse_sdp_a_line)
457 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
458 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 459 }
c8965800 460 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
461 int64_t start, end;
462
463 // this is so that seeking on a streamed file can work.
464 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
465 s->start_time = start;
466 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
467 s->duration = (end == AV_NOPTS_VALUE) ?
468 AV_NOPTS_VALUE : end - start;
119b4668
RB
469 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
470 if (atoi(p) == 1)
471 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
472 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
473 s->nb_streams > 0) {
474 st = s->streams[s->nb_streams - 1];
475 st->codec->sample_rate = atoi(p);
1a30d541
RB
476 } else {
477 if (rt->server_type == RTSP_SERVER_WMS)
478 ff_wms_parse_sdp_a_line(s, p);
479 if (s->nb_streams > 0) {
45600148
MS
480 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
481
c4a3d032 482 if (rt->server_type == RTSP_SERVER_REAL)
45600148 483 ff_real_parse_sdp_a_line(s, rtsp_st->stream_index, p);
c4a3d032 484
c4a3d032
RB
485 if (rtsp_st->dynamic_handler &&
486 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800 487 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
45600148 488 rtsp_st->stream_index,
c4a3d032 489 rtsp_st->dynamic_protocol_context, buf);
1a30d541 490 }
1617ad97
FB
491 }
492 break;
493 }
494}
495
0526c6f7 496int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 497{
a8475bbd 498 RTSPState *rt = s->priv_data;
1617ad97
FB
499 const char *p;
500 int letter;
9211bcdd
RB
501 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
502 * contain long SDP lines containing complete ASF Headers (several
503 * kB) or arrays of MDPR (RM stream descriptor) headers plus
504 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
505 * buffer is large.
506 *
afcea58c
JA
507 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
508 * in rtpdec_xiph.c. */
373afbaf 509 char buf[16384], *q;
a92be9b8 510 SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state;
115329f1 511
1617ad97 512 p = content;
c8965800 513 for (;;) {
30619e6e 514 p += strspn(p, SPACE_CHARS);
1617ad97
FB
515 letter = *p;
516 if (letter == '\0')
517 break;
518 p++;
519 if (*p != '=')
520 goto next_line;
521 p++;
522 /* get the content */
523 q = buf;
b6892136 524 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
525 if ((q - buf) < sizeof(buf) - 1)
526 *q++ = *p;
527 p++;
528 }
529 *q = '\0';
93ced3e8 530 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
531 next_line:
532 while (*p != '\n' && *p != '\0')
533 p++;
534 if (*p == '\n')
535 p++;
536 }
a8475bbd
LB
537 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
538 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
539 return 0;
540}
44b70ce5 541#endif /* CONFIG_RTPDEC */
1617ad97 542
93e7490e
MS
543void ff_rtsp_undo_setup(AVFormatContext *s)
544{
545 RTSPState *rt = s->priv_data;
546 int i;
547
548 for (i = 0; i < rt->nb_rtsp_streams; i++) {
549 RTSPStream *rtsp_st = rt->rtsp_streams[i];
550 if (!rtsp_st)
551 continue;
552 if (rtsp_st->transport_priv) {
553 if (s->oformat) {
554 AVFormatContext *rtpctx = rtsp_st->transport_priv;
555 av_write_trailer(rtpctx);
556 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
557 uint8_t *ptr;
6dc7d80d 558 avio_close_dyn_buf(rtpctx->pb, &ptr);
93e7490e
MS
559 av_free(ptr);
560 } else {
22a3212e 561 avio_close(rtpctx->pb);
93e7490e 562 }
b22dbb29 563 avformat_free_context(rtpctx);
93e7490e
MS
564 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
565 ff_rdt_parse_close(rtsp_st->transport_priv);
566 else if (CONFIG_RTPDEC)
bfc6db44 567 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
568 }
569 rtsp_st->transport_priv = NULL;
570 if (rtsp_st->rtp_handle)
e52a9145 571 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
572 rtsp_st->rtp_handle = NULL;
573 }
574}
575
1ced9da3 576/* close and free RTSP streams */
3307e6ea 577void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 578{
52aa4338 579 RTSPState *rt = s->priv_data;
1ced9da3
LA
580 int i;
581 RTSPStream *rtsp_st;
582
93e7490e 583 ff_rtsp_undo_setup(s);
c8965800 584 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
585 rtsp_st = rt->rtsp_streams[i];
586 if (rtsp_st) {
1ced9da3 587 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
9261e6cf 588 rtsp_st->dynamic_handler->free(
c8965800 589 rtsp_st->dynamic_protocol_context);
ea7f0807 590 av_free(rtsp_st);
1ced9da3
LA
591 }
592 }
593 av_free(rt->rtsp_streams);
594 if (rt->asf_ctx) {
cd3716b9 595 avformat_close_input(&rt->asf_ctx);
1ced9da3 596 }
a8475bbd 597 av_free(rt->p);
96a7c975 598 av_free(rt->recvbuf);
1ced9da3
LA
599}
600
6e71c120 601int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
602{
603 RTSPState *rt = s->priv_data;
604 AVStream *st = NULL;
605
606 /* open the RTP context */
607 if (rtsp_st->stream_index >= 0)
608 st = s->streams[rtsp_st->stream_index];
609 if (!st)
610 s->ctx_flags |= AVFMTCTX_NOHEADER;
611
44b70ce5 612 if (s->oformat && CONFIG_RTSP_MUXER) {
68c81308
MS
613 int ret = ff_rtp_chain_mux_open(&rtsp_st->transport_priv, s, st,
614 rtsp_st->rtp_handle,
615 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 616 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 617 rtsp_st->rtp_handle = NULL;
68c81308
MS
618 if (ret < 0)
619 return ret;
44b70ce5 620 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
621 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
622 rtsp_st->dynamic_protocol_context,
623 rtsp_st->dynamic_handler);
44b70ce5 624 else if (CONFIG_RTPDEC)
bfc6db44 625 rtsp_st->transport_priv = ff_rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
626 rtsp_st->sdp_payload_type,
627 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
628 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
629
630 if (!rtsp_st->transport_priv) {
631 return AVERROR(ENOMEM);
44b70ce5 632 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 633 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
634 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
635 rtsp_st->dynamic_protocol_context,
636 rtsp_st->dynamic_handler);
1ced9da3
LA
637 }
638 }
639
640 return 0;
641}
642
6f5a3d0a 643#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
644static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
645{
ddce7dab
MR
646 const char *q;
647 char *p;
1617ad97
FB
648 int v;
649
ddce7dab
MR
650 q = *pp;
651 q += strspn(q, SPACE_CHARS);
652 v = strtol(q, &p, 10);
1617ad97
FB
653 if (*p == '-') {
654 p++;
655 *min_ptr = v;
ddce7dab 656 v = strtol(p, &p, 10);
1617ad97
FB
657 *max_ptr = v;
658 } else {
659 *min_ptr = v;
660 *max_ptr = v;
661 }
662 *pp = p;
663}
664
665/* XXX: only one transport specification is parsed */
a9e534d5 666static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
667{
668 char transport_protocol[16];
669 char profile[16];
670 char lower_transport[16];
671 char parameter[16];
672 RTSPTransportField *th;
673 char buf[256];
115329f1 674
1617ad97 675 reply->nb_transports = 0;
115329f1 676
c8965800 677 for (;;) {
30619e6e 678 p += strspn(p, SPACE_CHARS);
1617ad97
FB
679 if (*p == '\0')
680 break;
681
682 th = &reply->transports[reply->nb_transports];
683
115329f1 684 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 685 "/", &p);
bb3244de 686 if (!av_strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
687 get_word_sep(profile, sizeof(profile), "/;,", &p);
688 lower_transport[0] = '\0';
689 /* rtp/avp/<protocol> */
690 if (*p == '/') {
7ecc634e
LB
691 get_word_sep(lower_transport, sizeof(lower_transport),
692 ";,", &p);
119b4668
RB
693 }
694 th->transport = RTSP_TRANSPORT_RTP;
bb3244de
RD
695 } else if (!av_strcasecmp (transport_protocol, "x-pn-tng") ||
696 !av_strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 697 /* x-pn-tng/<protocol> */
e1502118
LB
698 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
699 profile[0] = '\0';
119b4668 700 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 701 }
bb3244de 702 if (!av_strcasecmp(lower_transport, "TCP"))
90abbdba 703 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 704 else
90abbdba 705 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 706
1617ad97
FB
707 if (*p == ';')
708 p++;
709 /* get each parameter */
710 while (*p != '\0' && *p != ',') {
711 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
712 if (!strcmp(parameter, "port")) {
713 if (*p == '=') {
714 p++;
715 rtsp_parse_range(&th->port_min, &th->port_max, &p);
716 }
717 } else if (!strcmp(parameter, "client_port")) {
718 if (*p == '=') {
719 p++;
115329f1 720 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
721 &th->client_port_max, &p);
722 }
723 } else if (!strcmp(parameter, "server_port")) {
724 if (*p == '=') {
725 p++;
115329f1 726 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
727 &th->server_port_max, &p);
728 }
729 } else if (!strcmp(parameter, "interleaved")) {
730 if (*p == '=') {
731 p++;
115329f1 732 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
733 &th->interleaved_max, &p);
734 }
735 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
736 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
737 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
738 } else if (!strcmp(parameter, "ttl")) {
739 if (*p == '=') {
740 p++;
741 th->ttl = strtol(p, (char **)&p, 10);
742 }
743 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
744 if (*p == '=') {
745 p++;
746 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 747 get_sockaddr(buf, &th->destination);
1617ad97 748 }
619298a8
JW
749 } else if (!strcmp(parameter, "source")) {
750 if (*p == '=') {
751 p++;
752 get_word_sep(buf, sizeof(buf), ";,", &p);
753 av_strlcpy(th->source, buf, sizeof(th->source));
754 }
45b06858
JO
755 } else if (!strcmp(parameter, "mode")) {
756 if (*p == '=') {
757 p++;
758 get_word_sep(buf, sizeof(buf), ";, ", &p);
759 if (!strcmp(buf, "record") ||
760 !strcmp(buf, "receive"))
761 th->mode_record = 1;
762 }
1617ad97 763 }
619298a8 764
1617ad97
FB
765 while (*p != ';' && *p != '\0' && *p != ',')
766 p++;
767 if (*p == ';')
768 p++;
769 }
770 if (*p == ',')
771 p++;
772
773 reply->nb_transports++;
774 }
775}
776
29db7c3a
MS
777static void handle_rtp_info(RTSPState *rt, const char *url,
778 uint32_t seq, uint32_t rtptime)
779{
780 int i;
781 if (!rtptime || !url[0])
782 return;
783 if (rt->transport != RTSP_TRANSPORT_RTP)
784 return;
785 for (i = 0; i < rt->nb_rtsp_streams; i++) {
786 RTSPStream *rtsp_st = rt->rtsp_streams[i];
787 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
788 if (!rtpctx)
789 continue;
790 if (!strcmp(rtsp_st->control_url, url)) {
791 rtpctx->base_timestamp = rtptime;
792 break;
793 }
794 }
795}
796
797static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
798{
799 int read = 0;
800 char key[20], value[1024], url[1024] = "";
801 uint32_t seq = 0, rtptime = 0;
802
803 for (;;) {
804 p += strspn(p, SPACE_CHARS);
805 if (!*p)
806 break;
807 get_word_sep(key, sizeof(key), "=", &p);
808 if (*p != '=')
809 break;
810 p++;
811 get_word_sep(value, sizeof(value), ";, ", &p);
812 read++;
813 if (!strcmp(key, "url"))
814 av_strlcpy(url, value, sizeof(url));
815 else if (!strcmp(key, "seq"))
4515f9b5 816 seq = strtoul(value, NULL, 10);
29db7c3a 817 else if (!strcmp(key, "rtptime"))
4515f9b5 818 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
819 if (*p == ',') {
820 handle_rtp_info(rt, url, seq, rtptime);
821 url[0] = '\0';
822 seq = rtptime = 0;
823 read = 0;
824 }
825 if (*p)
826 p++;
827 }
828 if (read > 0)
829 handle_rtp_info(rt, url, seq, rtptime);
830}
831
2626308a 832void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 833 RTSPState *rt, const char *method)
1617ad97
FB
834{
835 const char *p;
836
837 /* NOTE: we do case independent match for broken servers */
838 p = buf;
f7d78f36 839 if (av_stristart(p, "Session:", &p)) {
30e79845 840 int t;
1617ad97 841 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
842 if (av_stristart(p, ";timeout=", &p) &&
843 (t = strtol(p, NULL, 10)) > 0) {
844 reply->timeout = t;
845 }
f7d78f36 846 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 847 reply->content_length = strtol(p, NULL, 10);
f7d78f36 848 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 849 rtsp_parse_transport(reply, p);
f7d78f36 850 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 851 reply->seq = strtol(p, NULL, 10);
f7d78f36 852 } else if (av_stristart(p, "Range:", &p)) {
31693e00 853 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 854 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 855 p += strspn(p, SPACE_CHARS);
30aa6aed 856 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 857 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 858 p += strspn(p, SPACE_CHARS);
7a86bafa 859 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
860 } else if (av_stristart(p, "Notice:", &p) ||
861 av_stristart(p, "X-Notice:", &p)) {
862 reply->notice = strtol(p, NULL, 10);
d243ba30 863 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 864 p += strspn(p, SPACE_CHARS);
d243ba30 865 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 866 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 867 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
868 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
869 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 870 p += strspn(p, SPACE_CHARS);
acc9ed14 871 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 872 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 873 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
874 if (method && !strcmp(method, "DESCRIBE"))
875 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
876 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
877 p += strspn(p, SPACE_CHARS);
878 if (method && !strcmp(method, "PLAY"))
879 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
880 } else if (av_stristart(p, "Public:", &p) && rt) {
881 if (strstr(p, "GET_PARAMETER") &&
882 method && !strcmp(method, "OPTIONS"))
883 rt->get_parameter_supported = 1;
30eae325
MS
884 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
885 p += strspn(p, SPACE_CHARS);
886 rt->accept_dynamic_rate = atoi(p);
fcd0298c
JO
887 } else if (av_stristart(p, "Content-Type:", &p)) {
888 p += strspn(p, SPACE_CHARS);
889 av_strlcpy(reply->content_type, p, sizeof(reply->content_type));
1617ad97
FB
890 }
891}
892
b7b8fc34 893/* skip a RTP/TCP interleaved packet */
ec55edba 894void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
895{
896 RTSPState *rt = s->priv_data;
897 int ret, len, len1;
898 uint8_t buf[1024];
899
dce37564 900 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
901 if (ret != 3)
902 return;
80fb8234 903 len = AV_RB16(buf + 1);
67c9cd69 904
dfd2a005 905 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 906
b7b8fc34
FB
907 /* skip payload */
908 while (len > 0) {
909 len1 = len;
910 if (len1 > sizeof(buf))
911 len1 = sizeof(buf);
dce37564 912 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
913 if (ret != len1)
914 return;
915 len -= len1;
916 }
917}
1617ad97 918
3307e6ea 919int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 920 unsigned char **content_ptr,
3df54c6b 921 int return_on_interleaved_data, const char *method)
1617ad97
FB
922{
923 RTSPState *rt = s->priv_data;
924 char buf[4096], buf1[1024], *q;
925 unsigned char ch;
926 const char *p;
1a6b9a98 927 int ret, content_length, line_count = 0, request = 0;
1617ad97
FB
928 unsigned char *content = NULL;
929
1a6b9a98
TW
930start:
931 line_count = 0;
932 request = 0;
933 content = NULL;
d541a7d2 934 memset(reply, 0, sizeof(*reply));
1617ad97 935
1617ad97 936 /* parse reply (XXX: use buffers) */
1617ad97 937 rt->last_reply[0] = '\0';
c8965800 938 for (;;) {
1617ad97 939 q = buf;
c8965800 940 for (;;) {
dce37564 941 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
dfd2a005 942 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 943 if (ret != 1)
2401660d 944 return AVERROR_EOF;
1617ad97
FB
945 if (ch == '\n')
946 break;
b7b8fc34
FB
947 if (ch == '$') {
948 /* XXX: only parse it if first char on line ? */
7e726132
RB
949 if (return_on_interleaved_data) {
950 return 1;
951 } else
ec55edba 952 ff_rtsp_skip_packet(s);
b7b8fc34 953 } else if (ch != '\r') {
1617ad97
FB
954 if ((q - buf) < sizeof(buf) - 1)
955 *q++ = ch;
956 }
957 }
958 *q = '\0';
67c9cd69 959
dfd2a005 960 av_dlog(s, "line='%s'\n", buf);
67c9cd69 961
1617ad97
FB
962 /* test if last line */
963 if (buf[0] == '\0')
964 break;
965 p = buf;
966 if (line_count == 0) {
967 /* get reply code */
968 get_word(buf1, sizeof(buf1), &p);
1a6b9a98
TW
969 if (!strncmp(buf1, "RTSP/", 5)) {
970 get_word(buf1, sizeof(buf1), &p);
971 reply->status_code = atoi(buf1);
972 av_strlcpy(reply->reason, p, sizeof(reply->reason));
973 } else {
974 av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method
975 get_word(buf1, sizeof(buf1), &p); // object
976 request = 1;
977 }
1617ad97 978 } else {
77223c53 979 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
980 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
981 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
982 }
983 line_count++;
984 }
115329f1 985
1a6b9a98 986 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0' && !request)
75e61b0e 987 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 988
1617ad97
FB
989 content_length = reply->content_length;
990 if (content_length > 0) {
991 /* leave some room for a trailing '\0' (useful for simple parsing) */
992 content = av_malloc(content_length + 1);
dce37564 993 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
994 content[content_length] = '\0';
995 }
996 if (content_ptr)
997 *content_ptr = content;
e2e2e7dd
AB
998 else
999 av_free(content);
7e726132 1000
1a6b9a98
TW
1001 if (request) {
1002 char buf[1024];
1003 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1004 const char* ptr = buf;
1005
1006 if (!strcmp(reply->reason, "OPTIONS")) {
1007 snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n");
1008 if (reply->seq)
1009 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq);
1010 if (reply->session_id[0])
1011 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n",
1012 reply->session_id);
1013 } else {
1014 snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n");
1015 }
1016 av_strlcat(buf, "\r\n", sizeof(buf));
1017
1018 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1019 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1020 ptr = base64buf;
1021 }
1022 ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr));
1023
1024 rt->last_cmd_time = av_gettime();
1025 /* Even if the request from the server had data, it is not the data
1026 * that the caller wants or expects. The memory could also be leaked
1027 * if the actual following reply has content data. */
1028 if (content_ptr)
1029 av_freep(content_ptr);
1030 /* If method is set, this is called from ff_rtsp_send_cmd,
1031 * where a reply to exactly this request is awaited. For
705eeb5e 1032 * callers from within packet receiving, we just want to
1a6b9a98
TW
1033 * return to the caller and go back to receiving packets. */
1034 if (method)
1035 goto start;
1036 return 0;
1037 }
1038
7ed8211b
LB
1039 if (rt->seq != reply->seq) {
1040 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
1041 rt->seq, reply->seq);
1042 }
1043
fccb1770
RB
1044 /* EOS */
1045 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
1046 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 1047 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 1048 rt->state = RTSP_STATE_IDLE;
c8965800 1049 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 1050 return AVERROR(EIO); /* data or server error */
c8965800 1051 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
1052 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
1053 return AVERROR(EPERM);
1054
7e726132 1055 return 0;
1617ad97
FB
1056}
1057
57c4d01e
DEP
1058/**
1059 * Send a command to the RTSP server without waiting for the reply.
1060 *
1061 * @param s RTSP (de)muxer context
1062 * @param method the method for the request
1063 * @param url the target url for the request
1064 * @param headers extra header lines to include in the request
1065 * @param send_content if non-null, the data to send as request body content
1066 * @param send_content_length the length of the send_content data, or 0 if
1067 * send_content is null
1068 *
1069 * @return zero if success, nonzero otherwise
1070 */
1071static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
1072 const char *method, const char *url,
1073 const char *headers,
1074 const unsigned char *send_content,
1075 int send_content_length)
29b9f58b
RB
1076{
1077 RTSPState *rt = s->priv_data;
f5d33f52
JA
1078 char buf[4096], *out_buf;
1079 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 1080
f5d33f52
JA
1081 /* Add in RTSP headers */
1082 out_buf = buf;
29b9f58b 1083 rt->seq++;
b17d11c6
MS
1084 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1085 if (headers)
1086 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1087 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
1088 if (rt->session_id[0] != '\0' && (!headers ||
1089 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1090 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1091 }
aa8bf2fb
MS
1092 if (rt->auth[0]) {
1093 char *str = ff_http_auth_create_response(&rt->auth_state,
1094 rt->auth, url, method);
1095 if (str)
1096 av_strlcat(buf, str, sizeof(buf));
1097 av_free(str);
1098 }
dfd017bf
MS
1099 if (send_content_length > 0 && send_content)
1100 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1101 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1102
f5d33f52
JA
1103 /* base64 encode rtsp if tunneling */
1104 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1105 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1106 out_buf = base64buf;
1107 }
1108
dfd2a005 1109 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 1110
925e908b 1111 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
1112 if (send_content_length > 0 && send_content) {
1113 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1114 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1115 "with content data not supported\n");
1116 return AVERROR_PATCHWELCOME;
1117 }
925e908b 1118 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1119 }
30e79845 1120 rt->last_cmd_time = av_gettime();
d0382374
JA
1121
1122 return 0;
30e79845
RB
1123}
1124
d0382374 1125int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1126 const char *url, const char *headers)
dfd017bf 1127{
d0382374 1128 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1129}
1130
d0382374 1131int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1132 const char *headers, RTSPMessageHeader *reply,
1133 unsigned char **content_ptr)
30e79845 1134{
d0382374 1135 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1136 content_ptr, NULL, 0);
29b9f58b
RB
1137}
1138
d0382374 1139int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1140 const char *method, const char *url,
1141 const char *header,
1142 RTSPMessageHeader *reply,
1143 unsigned char **content_ptr,
1144 const unsigned char *send_content,
1145 int send_content_length)
dfd017bf 1146{
30af0779
MS
1147 RTSPState *rt = s->priv_data;
1148 HTTPAuthType cur_auth_type;
2f96cc1f 1149 int ret, attempts = 0;
30af0779
MS
1150
1151retry:
1152 cur_auth_type = rt->auth_state.auth_type;
d0382374 1153 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1154 send_content,
1155 send_content_length)))
d0382374 1156 return ret;
dfd017bf 1157
3df54c6b 1158 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1159 return ret;
2f96cc1f 1160 attempts++;
30af0779 1161
2f96cc1f
MS
1162 if (reply->status_code == 401 &&
1163 (cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) &&
1164 rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2)
30af0779 1165 goto retry;
d0382374 1166
bf55cf19 1167 if (reply->status_code > 400){
d93fdcbf 1168 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1169 method,
d93fdcbf
LB
1170 reply->status_code,
1171 reply->reason);
bf55cf19
LB
1172 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1173 }
1174
d0382374 1175 return 0;
dfd017bf
MS
1176}
1177
fef5649a 1178int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1179 int lower_transport, const char *real_challenge)
1617ad97
FB
1180{
1181 RTSPState *rt = s->priv_data;
58f09785 1182 int rtx = 0, j, i, err, interleave = 0, port_off;
1617ad97 1183 RTSPStream *rtsp_st;
a9e534d5 1184 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1185 char cmd[2048];
e9dea59f
RB
1186 const char *trans_pref;
1187
119b4668 1188 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1189 trans_pref = "x-pn-tng";
1190 else
1191 trans_pref = "RTP/AVP";
115329f1 1192
30e79845
RB
1193 /* default timeout: 1 minute */
1194 rt->timeout = 60;
1195
1617ad97
FB
1196 /* for each stream, make the setup request */
1197 /* XXX: we assume the same server is used for the control of each
c8965800 1198 * RTSP stream */
d1ccf0e0 1199
58f09785
DV
1200 /* Choose a random starting offset within the first half of the
1201 * port range, to allow for a number of ports to try even if the offset
1202 * happens to be at the end of the random range. */
1203 port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2);
1204 /* even random offset */
1205 port_off -= port_off & 0x01;
1206
1207 for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1208 char transport[2048];
1209
f75e3da5 1210 /*
f830c9a4
RB
1211 * WMS serves all UDP data over a single connection, the RTX, which
1212 * isn't necessarily the first in the SDP but has to be the first
1213 * to be set up, else the second/third SETUP will fail with a 461.
1214 */
1215 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1216 rt->server_type == RTSP_SERVER_WMS) {
1217 if (i == 0) {
1218 /* rtx first */
1219 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1220 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1221 if (len >= 4 &&
c8965800
RB
1222 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1223 "/rtx"))
f830c9a4
RB
1224 break;
1225 }
1226 if (rtx == rt->nb_rtsp_streams)
1227 return -1; /* no RTX found */
1228 rtsp_st = rt->rtsp_streams[rtx];
1229 } else
1230 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1231 } else
2fea9650 1232 rtsp_st = rt->rtsp_streams[i];
1617ad97 1233
1617ad97 1234 /* RTP/UDP */
90abbdba 1235 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1236 char buf[256];
85fb7b34 1237
f830c9a4
RB
1238 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1239 port = reply->transports[0].client_port_min;
1240 goto have_port;
1241 }
1242
85fb7b34 1243 /* first try in specified port range */
dbb06b8c 1244 while (j <= rt->rtp_port_max) {
bc495bad
DV
1245 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1246 "?localport=%d", j);
1247 /* we will use two ports per rtp stream (rtp and rtcp) */
1248 j += 2;
1249 if (!ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
1250 &s->interrupt_callback, NULL))
1251 goto rtp_opened;
1617ad97 1252 }
85fb7b34 1253
a3b058b7
MS
1254 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1255 err = AVERROR(EIO);
1256 goto fail;
85fb7b34
FB
1257
1258 rtp_opened:
bfc6db44 1259 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1260 have_port:
0ad306bc 1261 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1262 "%s/UDP;", trans_pref);
1263 if (rt->server_type != RTSP_SERVER_REAL)
1264 av_strlcat(transport, "unicast;", sizeof(transport));
1265 av_strlcatf(transport, sizeof(transport),
1266 "client_port=%d", port);
f830c9a4
RB
1267 if (rt->transport == RTSP_TRANSPORT_RTP &&
1268 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1269 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1270 }
1271
1272 /* RTP/TCP */
90abbdba 1273 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1274 /* For WMS streams, the application streams are only used for
090438cc
RB
1275 * UDP. When trying to set it up for TCP streams, the server
1276 * will return an error. Therefore, we skip those streams. */
1277 if (rt->server_type == RTSP_SERVER_WMS &&
45600148
MS
1278 (rtsp_st->stream_index < 0 ||
1279 s->streams[rtsp_st->stream_index]->codec->codec_type ==
1280 AVMEDIA_TYPE_DATA))
090438cc 1281 continue;
0ad306bc 1282 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1283 "%s/TCP;", trans_pref);
895678f8 1284 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1285 av_strlcat(transport, "unicast;", sizeof(transport));
1286 av_strlcatf(transport, sizeof(transport),
1287 "interleaved=%d-%d",
1288 interleave, interleave + 1);
1289 interleave += 2;
1617ad97
FB
1290 }
1291
90abbdba 1292 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1293 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1294 "%s/UDP;multicast", trans_pref);
1617ad97 1295 }
69adcc4f 1296 if (s->oformat) {
bbc80386 1297 av_strlcat(transport, ";mode=record", sizeof(transport));
69adcc4f 1298 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1299 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1300 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1301 snprintf(cmd, sizeof(cmd),
b6892136 1302 "Transport: %s\r\n",
b17d11c6 1303 transport);
76b0d03d
MS
1304 if (rt->accept_dynamic_rate)
1305 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
44b70ce5 1306 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1307 char real_res[41], real_csum[9];
1308 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1309 real_challenge);
1310 av_strlcatf(cmd, sizeof(cmd),
1311 "If-Match: %s\r\n"
1312 "RealChallenge2: %s, sd=%s\r\n",
1313 rt->session_id, real_res, real_csum);
1314 }
b17d11c6 1315 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1316 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1317 err = 1;
1318 goto fail;
7e6ca34f
RB
1319 } else if (reply->status_code != RTSP_STATUS_OK ||
1320 reply->nb_transports != 1) {
1617ad97
FB
1321 err = AVERROR_INVALIDDATA;
1322 goto fail;
1323 }
1324
1325 /* XXX: same protocol for all streams is required */
1326 if (i > 0) {
119b4668
RB
1327 if (reply->transports[0].lower_transport != rt->lower_transport ||
1328 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1329 err = AVERROR_INVALIDDATA;
1330 goto fail;
1331 }
1332 } else {
90abbdba 1333 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1334 rt->transport = reply->transports[0].transport;
1617ad97
FB
1335 }
1336
8c579c1c
MS
1337 /* Fail if the server responded with another lower transport mode
1338 * than what we requested. */
1339 if (reply->transports[0].lower_transport != lower_transport) {
1340 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1341 err = AVERROR_INVALIDDATA;
1342 goto fail;
1617ad97
FB
1343 }
1344
90abbdba
RB
1345 switch(reply->transports[0].lower_transport) {
1346 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1347 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1348 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1349 break;
115329f1 1350
c8965800 1351 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1352 char url[1024], options[30] = "";
c8965800 1353
9867aea5 1354 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
a92c30d7 1355 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1356 /* Use source address if specified */
1357 if (reply->transports[0].source[0]) {
1358 ff_url_join(url, sizeof(url), "rtp", NULL,
1359 reply->transports[0].source,
d8407339 1360 reply->transports[0].server_port_min, "%s", options);
619298a8 1361 } else {
7bac991f 1362 ff_url_join(url, sizeof(url), "rtp", NULL, host,
d8407339 1363 reply->transports[0].server_port_min, "%s", options);
619298a8 1364 }
c8965800 1365 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1366 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1367 err = AVERROR_INVALIDDATA;
1368 goto fail;
1617ad97 1369 }
9c8fa20d
MS
1370 /* Try to initialize the connection state in a
1371 * potential NAT router by sending dummy packets.
1372 * RTP/RTCP dummy packets are used for RDT, too.
1373 */
44b70ce5
MS
1374 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1375 CONFIG_RTPDEC)
bfc6db44 1376 ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1377 break;
c8965800
RB
1378 }
1379 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
6294d708 1380 char url[1024], namebuf[50], optbuf[20] = "";
7934b15d 1381 struct sockaddr_storage addr;
c8965800
RB
1382 int port, ttl;
1383
7934b15d
MS
1384 if (reply->transports[0].destination.ss_family) {
1385 addr = reply->transports[0].destination;
c8965800
RB
1386 port = reply->transports[0].port_min;
1387 ttl = reply->transports[0].ttl;
1388 } else {
7934b15d 1389 addr = rtsp_st->sdp_ip;
c8965800
RB
1390 port = rtsp_st->sdp_port;
1391 ttl = rtsp_st->sdp_ttl;
1392 }
6294d708
MS
1393 if (ttl > 0)
1394 snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
7934b15d
MS
1395 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1396 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1397 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
6294d708 1398 port, "%s", optbuf);
6f1b7b39 1399 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1400 &s->interrupt_callback, NULL) < 0) {
c8965800
RB
1401 err = AVERROR_INVALIDDATA;
1402 goto fail;
1617ad97
FB
1403 }
1404 break;
1405 }
c8965800 1406 }
d1ccf0e0 1407
6e71c120 1408 if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1409 goto fail;
1617ad97
FB
1410 }
1411
62c3c8ca 1412 if (rt->nb_rtsp_streams && reply->timeout > 0)
30e79845
RB
1413 rt->timeout = reply->timeout;
1414
2e889ae4 1415 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1416 rt->need_subscription = 1;
1417
53620bba
RB
1418 return 0;
1419
1420fail:
aeb2de1c 1421 ff_rtsp_undo_setup(s);
53620bba
RB
1422 return err;
1423}
1424
b8c2c41d
JA
1425void ff_rtsp_close_connections(AVFormatContext *s)
1426{
1427 RTSPState *rt = s->priv_data;
e52a9145
AK
1428 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1429 ffurl_close(rt->rtsp_hd);
6217b645 1430 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1431}
1432
3307e6ea 1433int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1434{
1435 RTSPState *rt = s->priv_data;
921da217 1436 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
03f8fc08 1437 int port, err, tcp_fd;
354b7573 1438 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1439 int lower_transport_mask = 0;
2762a7a2 1440 char real_challenge[64] = "";
03f8fc08
MS
1441 struct sockaddr_storage peer;
1442 socklen_t peer_len = sizeof(peer);
57b5555c 1443
dbb06b8c
MS
1444 if (rt->rtp_port_max < rt->rtp_port_min) {
1445 av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1446 "than min port %d\n", rt->rtp_port_max,
1447 rt->rtp_port_min);
1448 return AVERROR(EINVAL);
1449 }
1450
57b5555c
MS
1451 if (!ff_network_init())
1452 return AVERROR(EIO);
eca4850c 1453
4fa57d52 1454 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1455 s->max_delay = s->iformat ? DEFAULT_REORDERING_DELAY : 0;
4fa57d52 1456
f5d33f52 1457 rt->control_transport = RTSP_MODE_PLAIN;
eca4850c
MS
1458 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1459 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1460 rt->control_transport = RTSP_MODE_TUNNEL;
1461 }
1462 /* Only pass through valid flags from here */
1463 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
eca4850c
MS
1464
1465redirect:
1466 lower_transport_mask = rt->lower_transport_mask;
53620bba 1467 /* extract hostname and port */
f3bfe388 1468 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1469 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1470 if (*auth) {
aa8bf2fb 1471 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1472 }
53620bba
RB
1473 if (port < 0)
1474 port = RTSP_DEFAULT_PORT;
1475
90abbdba 1476 if (!lower_transport_mask)
2a1d51c5 1477 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1478
3e24c770 1479 if (s->oformat) {
b7dc88fc
MS
1480 /* Only UDP or TCP - UDP multicast isn't supported. */
1481 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1482 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1483 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1484 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1485 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1486 err = AVERROR(EINVAL);
1487 goto fail;
1488 }
1489 }
1490
4bc5cc23
MS
1491 /* Construct the URI used in request; this is similar to s->filename,
1492 * but with authentication credentials removed and RTSP specific options
1493 * stripped out. */
1494 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1495 host, port, "%s", path);
1496
f5d33f52
JA
1497 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1498 /* set up initial handshake for tunneling */
1499 char httpname[1024];
1500 char sessioncookie[17];
1501 char headers[1024];
1502
10ed37b5 1503 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1504 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1505 av_get_random_seed(), av_get_random_seed());
1506
1507 /* GET requests */
6f1b7b39
MS
1508 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1509 &s->interrupt_callback) < 0) {
f5d33f52
JA
1510 err = AVERROR(EIO);
1511 goto fail;
1512 }
1513
1514 /* generate GET headers */
1515 snprintf(headers, sizeof(headers),
1516 "x-sessioncookie: %s\r\n"
1517 "Accept: application/x-rtsp-tunnelled\r\n"
1518 "Pragma: no-cache\r\n"
1519 "Cache-Control: no-cache\r\n",
1520 sessioncookie);
196bf28c 1521 av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
f5d33f52
JA
1522
1523 /* complete the connection */
ddffc2fd 1524 if (ffurl_connect(rt->rtsp_hd, NULL)) {
f5d33f52
JA
1525 err = AVERROR(EIO);
1526 goto fail;
1527 }
1528
1529 /* POST requests */
6f1b7b39
MS
1530 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
1531 &s->interrupt_callback) < 0 ) {
f5d33f52
JA
1532 err = AVERROR(EIO);
1533 goto fail;
1534 }
1535
1536 /* generate POST headers */
1537 snprintf(headers, sizeof(headers),
1538 "x-sessioncookie: %s\r\n"
1539 "Content-Type: application/x-rtsp-tunnelled\r\n"
1540 "Pragma: no-cache\r\n"
1541 "Cache-Control: no-cache\r\n"
1542 "Content-Length: 32767\r\n"
1543 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1544 sessioncookie);
196bf28c 1545 av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
6149485f 1546 av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
f5d33f52 1547
a8ead332
MS
1548 /* Initialize the authentication state for the POST session. The HTTP
1549 * protocol implementation doesn't properly handle multi-pass
1550 * authentication for POST requests, since it would require one of
1551 * the following:
1552 * - implementing Expect: 100-continue, which many HTTP servers
1553 * don't support anyway, even less the RTSP servers that do HTTP
1554 * tunneling
1555 * - sending the whole POST data until getting a 401 reply specifying
1556 * what authentication method to use, then resending all that data
1557 * - waiting for potential 401 replies directly after sending the
1558 * POST header (waiting for some unspecified time)
1559 * Therefore, we copy the full auth state, which works for both basic
1560 * and digest. (For digest, we would have to synchronize the nonce
1561 * count variable between the two sessions, if we'd do more requests
1562 * with the original session, though.)
1563 */
1564 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1565
9290f15d 1566 /* complete the connection */
ddffc2fd 1567 if (ffurl_connect(rt->rtsp_hd_out, NULL)) {
9290f15d
MS
1568 err = AVERROR(EIO);
1569 goto fail;
1570 }
f5d33f52 1571 } else {
48e77473 1572 /* open the tcp connection */
41874d0a 1573 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
6f1b7b39 1574 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
ddffc2fd 1575 &s->interrupt_callback, NULL) < 0) {
41874d0a
JA
1576 err = AVERROR(EIO);
1577 goto fail;
1578 }
00e4a1f4 1579 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1580 }
53620bba
RB
1581 rt->seq = 0;
1582
1869ea03 1583 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1584 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1585 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1586 NULL, 0, NI_NUMERICHOST);
1587 }
1588
c8965800
RB
1589 /* request options supported by the server; this also detects server
1590 * type */
1cf151e9 1591 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1592 cmd[0] = 0;
2e889ae4 1593 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1594 av_strlcat(cmd,
f75e3da5 1595 /*
1cf151e9
RB
1596 * The following entries are required for proper
1597 * streaming from a Realmedia server. They are
1598 * interdependent in some way although we currently
1599 * don't quite understand how. Values were copied
1600 * from mplayer SVN r23589.
f75e3da5
DB
1601 * ClientChallenge is a 16-byte ID in hex
1602 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1603 */
1604 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1605 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1606 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1607 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1608 sizeof(cmd));
b17d11c6 1609 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1610 if (reply->status_code != RTSP_STATUS_OK) {
1611 err = AVERROR_INVALIDDATA;
1612 goto fail;
1613 }
1614
1615 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1616 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1617 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1618 continue;
bb3244de 1619 } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
7a86bafa 1620 rt->server_type = RTSP_SERVER_WMS;
c8965800 1621 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1622 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1623 break;
1624 }
1625
44b70ce5 1626 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1627 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1628 else if (CONFIG_RTSP_MUXER)
c2688f3a 1629 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1630 if (err)
53620bba 1631 goto fail;
53620bba 1632
8a8754d8 1633 do {
c8965800
RB
1634 int lower_transport = ff_log2_tab[lower_transport_mask &
1635 ~(lower_transport_mask - 1)];
8a8754d8 1636
fef5649a 1637 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1638 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1639 real_challenge : NULL);
8a8754d8 1640 if (err < 0)
7e6ca34f 1641 goto fail;
90abbdba
RB
1642 lower_transport_mask &= ~(1 << lower_transport);
1643 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1644 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1645 goto fail;
1646 }
1647 } while (err);
53620bba 1648
2762a7a2
MS
1649 rt->lower_transport_mask = lower_transport_mask;
1650 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1651 rt->state = RTSP_STATE_IDLE;
c8965800 1652 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1653 return 0;
1654 fail:
3307e6ea 1655 ff_rtsp_close_streams(s);
b8c2c41d 1656 ff_rtsp_close_connections(s);
35cfd646 1657 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1658 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1659 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1660 reply->status_code,
1661 s->filename);
1662 goto redirect;
1663 }
57b5555c 1664 ff_network_close();
1617ad97
FB
1665 return err;
1666}
2e802e38 1667#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1668
44b70ce5 1669#if CONFIG_RTPDEC
0e59034e 1670static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1671 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1672{
1673 RTSPState *rt = s->priv_data;
1674 RTSPStream *rtsp_st;
a8475bbd
LB
1675 int n, i, ret, tcp_fd, timeout_cnt = 0;
1676 int max_p = 0;
1677 struct pollfd *p = rt->p;
0e59034e 1678
c8965800 1679 for (;;) {
9957cdbf 1680 if (ff_check_interrupt(&s->interrupt_callback))
c76374c6 1681 return AVERROR_EXIT;
321259c1
MS
1682 if (wait_end && wait_end - av_gettime() < 0)
1683 return AVERROR(EAGAIN);
a8475bbd 1684 max_p = 0;
0e59034e 1685 if (rt->rtsp_hd) {
1869ea03 1686 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1687 p[max_p].fd = tcp_fd;
1688 p[max_p++].events = POLLIN;
0e59034e 1689 } else {
0e59034e
RB
1690 tcp_fd = -1;
1691 }
c8965800 1692 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1693 rtsp_st = rt->rtsp_streams[i];
1694 if (rtsp_st->rtp_handle) {
1869ea03 1695 p[max_p].fd = ffurl_get_file_handle(rtsp_st->rtp_handle);
a8475bbd 1696 p[max_p++].events = POLLIN;
bfc6db44 1697 p[max_p].fd = ff_rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
a8475bbd 1698 p[max_p++].events = POLLIN;
0e59034e
RB
1699 }
1700 }
a8475bbd 1701 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1702 if (n > 0) {
a8475bbd 1703 int j = 1 - (tcp_fd == -1);
9cba6f5f 1704 timeout_cnt = 0;
c8965800 1705 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1706 rtsp_st = rt->rtsp_streams[i];
1707 if (rtsp_st->rtp_handle) {
a8475bbd 1708 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1709 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1710 if (ret > 0) {
1711 *prtsp_st = rtsp_st;
1712 return ret;
1713 }
1714 }
a8475bbd 1715 j+=2;
0e59034e
RB
1716 }
1717 }
5fe8021a 1718#if CONFIG_RTSP_DEMUXER
a8475bbd 1719 if (tcp_fd != -1 && p[0].revents & POLLIN) {
a8ad6ffa
JO
1720 if (rt->rtsp_flags & RTSP_FLAG_LISTEN) {
1721 if (rt->state == RTSP_STATE_STREAMING) {
1722 if (!ff_rtsp_parse_streaming_commands(s))
1723 return AVERROR_EOF;
1724 else
1725 av_log(s, AV_LOG_WARNING,
1726 "Unable to answer to TEARDOWN\n");
1727 } else
1728 return 0;
1729 } else {
1730 RTSPMessageHeader reply;
1731 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
1732 if (ret < 0)
1733 return ret;
1734 /* XXX: parse message */
1735 if (rt->state != RTSP_STATE_STREAMING)
1736 return 0;
1737 }
0e59034e 1738 }
5fe8021a 1739#endif
9cba6f5f 1740 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1741 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1742 } else if (n < 0 && errno != EINTR)
1743 return AVERROR(errno);
0e59034e
RB
1744 }
1745}
1746
0526c6f7 1747int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1748{
1749 RTSPState *rt = s->priv_data;
1750 int ret, len;
321259c1
MS
1751 RTSPStream *rtsp_st, *first_queue_st = NULL;
1752 int64_t wait_end = 0;
0e59034e 1753
b20359f5
JA
1754 if (rt->nb_byes == rt->nb_rtsp_streams)
1755 return AVERROR_EOF;
1756
0e59034e
RB
1757 /* get next frames from the same RTP packet */
1758 if (rt->cur_transport_priv) {
c8965800 1759 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1760 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1761 } else
bfc6db44 1762 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
0e59034e
RB
1763 if (ret == 0) {
1764 rt->cur_transport_priv = NULL;
1765 return 0;
1766 } else if (ret == 1) {
1767 return 0;
c8965800 1768 } else
0e59034e 1769 rt->cur_transport_priv = NULL;
0e59034e
RB
1770 }
1771
321259c1
MS
1772 if (rt->transport == RTSP_TRANSPORT_RTP) {
1773 int i;
1774 int64_t first_queue_time = 0;
1775 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1776 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1777 int64_t queue_time;
1778 if (!rtpctx)
1779 continue;
1780 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1781 if (queue_time && (queue_time - first_queue_time < 0 ||
1782 !first_queue_time)) {
1783 first_queue_time = queue_time;
1784 first_queue_st = rt->rtsp_streams[i];
1785 }
1786 }
1787 if (first_queue_time)
1788 wait_end = first_queue_time + s->max_delay;
1789 }
1790
0e59034e
RB
1791 /* read next RTP packet */
1792 redo:
96a7c975
MS
1793 if (!rt->recvbuf) {
1794 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1795 if (!rt->recvbuf)
1796 return AVERROR(ENOMEM);
1797 }
1798
0e59034e
RB
1799 switch(rt->lower_transport) {
1800 default:
5fe8021a 1801#if CONFIG_RTSP_DEMUXER
0e59034e 1802 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1803 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1804 break;
5fe8021a 1805#endif
0e59034e
RB
1806 case RTSP_LOWER_TRANSPORT_UDP:
1807 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1808 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1809 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
bfc6db44 1810 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
0e59034e
RB
1811 break;
1812 }
321259c1
MS
1813 if (len == AVERROR(EAGAIN) && first_queue_st &&
1814 rt->transport == RTSP_TRANSPORT_RTP) {
1815 rtsp_st = first_queue_st;
bfc6db44 1816 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
1817 goto end;
1818 }
0e59034e
RB
1819 if (len < 0)
1820 return len;
1821 if (len == 0)
1822 return AVERROR_EOF;
c8965800 1823 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1824 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1825 } else {
bfc6db44 1826 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1827 if (ret < 0) {
1828 /* Either bad packet, or a RTCP packet. Check if the
1829 * first_rtcp_ntp_time field was initialized. */
1830 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1831 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1832 /* first_rtcp_ntp_time has been initialized for this stream,
1833 * copy the same value to all other uninitialized streams,
1834 * in order to map their timestamp origin to the same ntp time
1835 * as this one. */
1836 int i;
3a1cdcc7
MS
1837 AVStream *st = NULL;
1838 if (rtsp_st->stream_index >= 0)
1839 st = s->streams[rtsp_st->stream_index];
2cab6b48 1840 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1841 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1842 AVStream *st2 = NULL;
1843 if (rt->rtsp_streams[i]->stream_index >= 0)
1844 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1845 if (rtpctx2 && st && st2 &&
1846 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1847 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1848 rtpctx2->rtcp_ts_offset = av_rescale_q(
1849 rtpctx->rtcp_ts_offset, st->time_base,
1850 st2->time_base);
1851 }
2cab6b48
MS
1852 }
1853 }
b20359f5
JA
1854 if (ret == -RTCP_BYE) {
1855 rt->nb_byes++;
1856
1857 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1858 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1859
1860 if (rt->nb_byes == rt->nb_rtsp_streams)
1861 return AVERROR_EOF;
1862 }
2cab6b48
MS
1863 }
1864 }
321259c1 1865end:
0e59034e
RB
1866 if (ret < 0)
1867 goto redo;
c8965800 1868 if (ret == 1)
0e59034e
RB
1869 /* more packets may follow, so we save the RTP context */
1870 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1871
1872 return ret;
1873}
44b70ce5 1874#endif /* CONFIG_RTPDEC */
0e59034e 1875
44b70ce5 1876#if CONFIG_SDP_DEMUXER
cb1fdc61 1877static int sdp_probe(AVProbeData *p1)
93ced3e8 1878{
0e1ceacd 1879 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1880
3fbd12d1 1881 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1882 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1883 if (p + sizeof("c=IN IP") - 1 < p_end &&
1884 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1885 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1886
c8965800 1887 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1888 if (++p >= p_end)
cb1fdc61 1889 break;
cb1fdc61
FB
1890 if (*p == '\r')
1891 p++;
1892 }
93ced3e8
FB
1893 return 0;
1894}
1895
6e9651d1 1896static int sdp_read_header(AVFormatContext *s)
93ced3e8 1897{
8b1ab7bf 1898 RTSPState *rt = s->priv_data;
93ced3e8
FB
1899 RTSPStream *rtsp_st;
1900 int size, i, err;
1901 char *content;
1902 char url[1024];
1903
57b5555c
MS
1904 if (!ff_network_init())
1905 return AVERROR(EIO);
1906
4fa57d52 1907 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1908 s->max_delay = DEFAULT_REORDERING_DELAY;
4fa57d52 1909
93ced3e8
FB
1910 /* read the whole sdp file */
1911 /* XXX: better loading */
1912 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 1913 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1914 if (size <= 0) {
1915 av_free(content);
1916 return AVERROR_INVALIDDATA;
1917 }
1918 content[size] ='\0';
1919
f81c7ac7 1920 err = ff_sdp_parse(s, content);
93ced3e8 1921 av_free(content);
f81c7ac7 1922 if (err) goto fail;
93ced3e8
FB
1923
1924 /* open each RTP stream */
c8965800 1925 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1926 char namebuf[50];
8b1ab7bf 1927 rtsp_st = rt->rtsp_streams[i];
115329f1 1928
3fbd12d1
MS
1929 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1930 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1931 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1932 namebuf, rtsp_st->sdp_port,
51369f28
MS
1933 "?localport=%d&ttl=%d&connect=%d", rtsp_st->sdp_port,
1934 rtsp_st->sdp_ttl,
1935 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0);
6f1b7b39 1936 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1937 &s->interrupt_callback, NULL) < 0) {
93ced3e8
FB
1938 err = AVERROR_INVALIDDATA;
1939 goto fail;
1940 }
6e71c120 1941 if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1942 goto fail;
93ced3e8
FB
1943 }
1944 return 0;
c8965800 1945fail:
3307e6ea 1946 ff_rtsp_close_streams(s);
57b5555c 1947 ff_network_close();
93ced3e8
FB
1948 return err;
1949}
1950
93ced3e8
FB
1951static int sdp_read_close(AVFormatContext *s)
1952{
3307e6ea 1953 ff_rtsp_close_streams(s);
57b5555c 1954 ff_network_close();
93ced3e8
FB
1955 return 0;
1956}
1957
51369f28
MS
1958static const AVClass sdp_demuxer_class = {
1959 .class_name = "SDP demuxer",
1960 .item_name = av_default_item_name,
1961 .option = sdp_options,
1962 .version = LIBAVUTIL_VERSION_INT,
1963};
1964
c6610a21 1965AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
1966 .name = "sdp",
1967 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
1968 .priv_data_size = sizeof(RTSPState),
1969 .read_probe = sdp_probe,
1970 .read_header = sdp_read_header,
1971 .read_packet = ff_rtsp_fetch_packet,
1972 .read_close = sdp_read_close,
17934c18 1973 .priv_class = &sdp_demuxer_class,
93ced3e8 1974};
44b70ce5 1975#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1976
44b70ce5 1977#if CONFIG_RTP_DEMUXER
44594cc7
MS
1978static int rtp_probe(AVProbeData *p)
1979{
1980 if (av_strstart(p->filename, "rtp:", NULL))
1981 return AVPROBE_SCORE_MAX;
1982 return 0;
1983}
1984
6e9651d1 1985static int rtp_read_header(AVFormatContext *s)
44594cc7
MS
1986{
1987 uint8_t recvbuf[1500];
1988 char host[500], sdp[500];
1989 int ret, port;
1990 URLContext* in = NULL;
1991 int payload_type;
a92be9b8 1992 AVCodecContext codec = { 0 };
44594cc7 1993 struct sockaddr_storage addr;
ae628ec1 1994 AVIOContext pb;
44594cc7 1995 socklen_t addrlen = sizeof(addr);
30266038 1996 RTSPState *rt = s->priv_data;
44594cc7
MS
1997
1998 if (!ff_network_init())
1999 return AVERROR(EIO);
2000
6f1b7b39 2001 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ,
ddffc2fd 2002 &s->interrupt_callback, NULL);
44594cc7
MS
2003 if (ret)
2004 goto fail;
2005
2006 while (1) {
bc371aca 2007 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
44594cc7
MS
2008 if (ret == AVERROR(EAGAIN))
2009 continue;
2010 if (ret < 0)
2011 goto fail;
2012 if (ret < 12) {
2013 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
2014 continue;
2015 }
2016
2017 if ((recvbuf[0] & 0xc0) != 0x80) {
2018 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
2019 "received\n");
2020 continue;
2021 }
2022
298a587f 2023 if (RTP_PT_IS_RTCP(recvbuf[1]))
f3a094f2
MS
2024 continue;
2025
44594cc7
MS
2026 payload_type = recvbuf[1] & 0x7f;
2027 break;
2028 }
1869ea03 2029 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 2030 ffurl_close(in);
44594cc7
MS
2031 in = NULL;
2032
44594cc7
MS
2033 if (ff_rtp_get_codec_info(&codec, payload_type)) {
2034 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
2035 "without an SDP file describing it\n",
2036 payload_type);
2037 goto fail;
2038 }
2039 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
2040 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
2041 "properly you need an SDP file "
2042 "describing it\n");
2043 }
2044
2045 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
2046 NULL, 0, s->filename);
2047
2048 snprintf(sdp, sizeof(sdp),
2049 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
2050 addr.ss_family == AF_INET ? 4 : 6, host,
2051 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
2052 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
2053 port, payload_type);
2054 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
2055
e731b8d8 2056 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
44594cc7
MS
2057 s->pb = &pb;
2058
2059 /* sdp_read_header initializes this again */
2060 ff_network_close();
2061
30266038
MS
2062 rt->media_type_mask = (1 << (AVMEDIA_TYPE_DATA+1)) - 1;
2063
6e9651d1 2064 ret = sdp_read_header(s);
44594cc7
MS
2065 s->pb = NULL;
2066 return ret;
2067
2068fail:
2069 if (in)
e52a9145 2070 ffurl_close(in);
44594cc7
MS
2071 ff_network_close();
2072 return ret;
2073}
2074
51369f28
MS
2075static const AVClass rtp_demuxer_class = {
2076 .class_name = "RTP demuxer",
2077 .item_name = av_default_item_name,
2078 .option = rtp_options,
2079 .version = LIBAVUTIL_VERSION_INT,
2080};
2081
c6610a21 2082AVInputFormat ff_rtp_demuxer = {
dfc2c4d9 2083 .name = "rtp",
6774247a 2084 .long_name = NULL_IF_CONFIG_SMALL("RTP input"),
dfc2c4d9
AK
2085 .priv_data_size = sizeof(RTSPState),
2086 .read_probe = rtp_probe,
2087 .read_header = rtp_read_header,
2088 .read_packet = ff_rtsp_fetch_packet,
2089 .read_close = sdp_read_close,
17934c18
MS
2090 .flags = AVFMT_NOFILE,
2091 .priv_class = &rtp_demuxer_class,
44594cc7 2092};
44b70ce5 2093#endif /* CONFIG_RTP_DEMUXER */