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