rtsp: Vertically align a constant definition
[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"
1243c722 49#include "mpegts.h"
4934884a 50
1617ad97
FB
51//#define DEBUG
52
a8475bbd 53/* Timeout values for socket poll, in ms,
9cba6f5f 54 * and read_packet(), in seconds */
a8475bbd 55#define POLL_TIMEOUT_MS 100
9cba6f5f 56#define READ_PACKET_TIMEOUT_S 10
a8475bbd 57#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS
91af5601 58#define SDP_MAX_SIZE 16384
96a7c975 59#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
ccfa8aa2 60#define DEFAULT_REORDERING_DELAY 100000
9cba6f5f 61
2c9aa024
MS
62#define OFFSET(x) offsetof(RTSPState, x)
63#define DEC AV_OPT_FLAG_DECODING_PARAM
eca4850c 64#define ENC AV_OPT_FLAG_ENCODING_PARAM
3a6765fb
MS
65
66#define RTSP_FLAG_OPTS(name, longname) \
d58dd4b5 67 { name, longname, OFFSET(rtsp_flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, DEC, "rtsp_flags" }, \
124134e4
MS
68 { "filter_src", "Only receive packets from the negotiated peer IP", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_FILTER_SRC}, 0, 0, DEC, "rtsp_flags" }, \
69 { "listen", "Wait for incoming connections", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_LISTEN}, 0, 0, DEC, "rtsp_flags" }
3a6765fb 70
f011fcd6 71#define RTSP_MEDIATYPE_OPTS(name, longname) \
d58dd4b5 72 { name, longname, OFFSET(media_type_mask), AV_OPT_TYPE_FLAGS, { .i64 = (1 << (AVMEDIA_TYPE_DATA+1)) - 1 }, INT_MIN, INT_MAX, DEC, "allowed_media_types" }, \
124134e4
MS
73 { "video", "Video", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_VIDEO}, 0, 0, DEC, "allowed_media_types" }, \
74 { "audio", "Audio", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_AUDIO}, 0, 0, DEC, "allowed_media_types" }, \
75 { "data", "Data", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_DATA}, 0, 0, DEC, "allowed_media_types" }
f011fcd6 76
17fff881 77const AVOption ff_rtsp_options[] = {
e6153f17 78 { "initial_pause", "Don't start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, DEC },
5354a904 79 FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags),
d58dd4b5 80 { "rtsp_transport", "RTSP transport protocols", OFFSET(lower_transport_mask), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, DEC|ENC, "rtsp_transport" }, \
124134e4
MS
81 { "udp", "UDP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
82 { "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
83 { "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, "rtsp_transport" },
84 { "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {.i64 = (1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, "rtsp_transport" },
3a6765fb 85 RTSP_FLAG_OPTS("rtsp_flags", "RTSP flags"),
f011fcd6 86 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
e6153f17
MS
87 { "min_port", "Minimum local UDP port", OFFSET(rtp_port_min), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MIN}, 0, 65535, DEC|ENC },
88 { "max_port", "Maximum local UDP port", OFFSET(rtp_port_max), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MAX}, 0, 65535, DEC|ENC },
89 { "timeout", "Maximum timeout (in seconds) to wait for incoming connections. -1 is infinite. Implies flag listen", OFFSET(initial_timeout), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, DEC },
17fff881
MS
90 { NULL },
91};
92
51369f28
MS
93static const AVOption sdp_options[] = {
94 RTSP_FLAG_OPTS("sdp_flags", "SDP flags"),
f011fcd6 95 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
51369f28
MS
96 { NULL },
97};
98
99static const AVOption rtp_options[] = {
100 RTSP_FLAG_OPTS("rtp_flags", "RTP flags"),
101 { NULL },
102};
103
1ef36a70
RB
104static void get_word_until_chars(char *buf, int buf_size,
105 const char *sep, const char **pp)
1617ad97
FB
106{
107 const char *p;
108 char *q;
109
110 p = *pp;
30619e6e 111 p += strspn(p, SPACE_CHARS);
1617ad97
FB
112 q = buf;
113 while (!strchr(sep, *p) && *p != '\0') {
114 if ((q - buf) < buf_size - 1)
115 *q++ = *p;
116 p++;
117 }
118 if (buf_size > 0)
119 *q = '\0';
120 *pp = p;
121}
122
1ef36a70
RB
123static void get_word_sep(char *buf, int buf_size, const char *sep,
124 const char **pp)
1617ad97 125{
1ef36a70
RB
126 if (**pp == '/') (*pp)++;
127 get_word_until_chars(buf, buf_size, sep, pp);
128}
1617ad97 129
1ef36a70
RB
130static void get_word(char *buf, int buf_size, const char **pp)
131{
132 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
133}
134
8bf0f969
MS
135/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
136 * and end time.
137 * Used for seeking in the rtp stream.
138 */
139static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
140{
141 char buf[256];
142
143 p += strspn(p, SPACE_CHARS);
144 if (!av_stristart(p, "npt=", &p))
145 return;
146
147 *start = AV_NOPTS_VALUE;
148 *end = AV_NOPTS_VALUE;
149
150 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 151 av_parse_time(start, buf, 1);
8bf0f969
MS
152 if (*p == '-') {
153 p++;
154 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 155 av_parse_time(end, buf, 1);
8bf0f969 156 }
8bf0f969
MS
157}
158
159static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
160{
a92be9b8 161 struct addrinfo hints = { 0 }, *ai = NULL;
8bf0f969
MS
162 hints.ai_flags = AI_NUMERICHOST;
163 if (getaddrinfo(buf, NULL, &hints, &ai))
164 return -1;
165 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
166 freeaddrinfo(ai);
167 return 0;
168}
169
44b70ce5 170#if CONFIG_RTPDEC
003eb642
MS
171static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
172 RTSPStream *rtsp_st, AVCodecContext *codec)
173{
174 if (!handler)
175 return;
176 codec->codec_id = handler->codec_id;
177 rtsp_st->dynamic_handler = handler;
4b3dc857 178 if (handler->alloc) {
9261e6cf 179 rtsp_st->dynamic_protocol_context = handler->alloc();
4b3dc857
MS
180 if (!rtsp_st->dynamic_protocol_context)
181 rtsp_st->dynamic_handler = NULL;
182 }
003eb642
MS
183}
184
c8965800 185/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 186static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 187 AVStream *st, RTSPStream *rtsp_st,
c8965800 188 int payload_type, const char *p)
93ced3e8 189{
86b6e387 190 AVCodecContext *codec = st->codec;
93ced3e8 191 char buf[256];
d1ccf0e0
RD
192 int i;
193 AVCodec *c;
7b49ce2e 194 const char *c_name;
93ced3e8 195
d1ccf0e0 196 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
197 * see if we can handle this kind of payload.
198 * The space should normally not be there but some Real streams or
199 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
200 * have a trailing space. */
201 get_word_sep(buf, sizeof(buf), "/ ", &p);
6099543a
MS
202 if (payload_type < RTP_PT_PRIVATE) {
203 /* We are in a standard case
204 * (from http://www.iana.org/assignments/rtp-parameters). */
205 /* search into AVRtpPayloadTypes[] */
206 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
207 }
208
36ef5369 209 if (codec->codec_id == AV_CODEC_ID_NONE) {
003eb642
MS
210 RTPDynamicProtocolHandler *handler =
211 ff_rtp_handler_find_by_name(buf, codec->codec_type);
212 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
213 /* If no dynamic handler was found, check with the list of standard
214 * allocated types, if such a stream for some reason happens to
215 * use a private payload type. This isn't handled in rtpdec.c, since
216 * the format name from the rtpmap line never is passed into rtpdec. */
217 if (!rtsp_st->dynamic_handler)
218 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
219 }
220
221 c = avcodec_find_decoder(codec->codec_id);
222 if (c && c->name)
7b49ce2e 223 c_name = c->name;
d1ccf0e0 224 else
170870b7 225 c_name = "(null)";
d1ccf0e0 226
7515ed0c
RB
227 get_word_sep(buf, sizeof(buf), "/", &p);
228 i = atoi(buf);
229 switch (codec->codec_type) {
72415b2a 230 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
231 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
232 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
233 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
234 if (i > 0) {
235 codec->sample_rate = i;
c3f9ebf7 236 avpriv_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
237 get_word_sep(buf, sizeof(buf), "/", &p);
238 i = atoi(buf);
239 if (i > 0)
240 codec->channels = i;
241 // TODO: there is a bug here; if it is a mono stream, and
242 // less than 22000Hz, faad upconverts to stereo and twice
243 // the frequency. No problem, but the sample rate is being
244 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 245 }
7515ed0c
RB
246 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
247 codec->sample_rate);
248 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
249 codec->channels);
250 break;
72415b2a 251 case AVMEDIA_TYPE_VIDEO:
7515ed0c 252 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387 253 if (i > 0)
c3f9ebf7 254 avpriv_set_pts_info(st, 32, 1, i);
7515ed0c
RB
255 break;
256 default:
257 break;
258 }
25836606
MS
259 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->init)
260 rtsp_st->dynamic_handler->init(s, st->index,
261 rtsp_st->dynamic_protocol_context);
7515ed0c 262 return 0;
93ced3e8
FB
263}
264
c2bfd816 265/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
266 * is broken out as a function because it is used in rtp_h264.c, which is
267 * forthcoming. */
3307e6ea 268int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 269 char *value, int value_size)
d0deedcb 270{
30619e6e 271 *p += strspn(*p, SPACE_CHARS);
c8965800 272 if (**p) {
d0deedcb
RM
273 get_word_sep(attr, attr_size, "=", p);
274 if (**p == '=')
275 (*p)++;
276 get_word_sep(value, value_size, ";", p);
277 if (**p == ';')
278 (*p)++;
279 return 1;
280 }
281 return 0;
282}
283
93ced3e8
FB
284typedef struct SDPParseState {
285 /* SDP only */
3fbd12d1 286 struct sockaddr_storage default_ip;
c8965800
RB
287 int default_ttl;
288 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
289} SDPParseState;
290
291static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
292 int letter, const char *buf)
293{
8b1ab7bf 294 RTSPState *rt = s->priv_data;
1617ad97
FB
295 char buf1[64], st_type[64];
296 const char *p;
72415b2a 297 enum AVMediaType codec_type;
fb65d2ca 298 int payload_type, i;
1617ad97
FB
299 AVStream *st;
300 RTSPStream *rtsp_st;
3fbd12d1 301 struct sockaddr_storage sdp_ip;
93ced3e8
FB
302 int ttl;
303
dfd2a005 304 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
305
306 p = buf;
cb760a47
RB
307 if (s1->skip_media && letter != 'm')
308 return;
c8965800 309 switch (letter) {
93ced3e8
FB
310 case 'c':
311 get_word(buf1, sizeof(buf1), &p);
312 if (strcmp(buf1, "IN") != 0)
313 return;
314 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 315 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
316 return;
317 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 318 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
319 return;
320 ttl = 16;
321 if (*p == '/') {
322 p++;
323 get_word_sep(buf1, sizeof(buf1), "/", &p);
324 ttl = atoi(buf1);
325 }
326 if (s->nb_streams == 0) {
327 s1->default_ip = sdp_ip;
328 s1->default_ttl = ttl;
329 } else {
d9c0510e 330 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
331 rtsp_st->sdp_ip = sdp_ip;
332 rtsp_st->sdp_ttl = ttl;
333 }
334 break;
1617ad97 335 case 's':
d2d67e42 336 av_dict_set(&s->metadata, "title", p, 0);
1617ad97
FB
337 break;
338 case 'i':
339 if (s->nb_streams == 0) {
d2d67e42 340 av_dict_set(&s->metadata, "comment", p, 0);
1617ad97
FB
341 break;
342 }
343 break;
344 case 'm':
345 /* new stream */
cb760a47 346 s1->skip_media = 0;
f011fcd6 347 codec_type = AVMEDIA_TYPE_UNKNOWN;
1617ad97
FB
348 get_word(st_type, sizeof(st_type), &p);
349 if (!strcmp(st_type, "audio")) {
72415b2a 350 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 351 } else if (!strcmp(st_type, "video")) {
72415b2a 352 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 353 } else if (!strcmp(st_type, "application")) {
72415b2a 354 codec_type = AVMEDIA_TYPE_DATA;
f011fcd6
JB
355 }
356 if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) {
cb760a47 357 s1->skip_media = 1;
1617ad97
FB
358 return;
359 }
1617ad97
FB
360 rtsp_st = av_mallocz(sizeof(RTSPStream));
361 if (!rtsp_st)
362 return;
8b1ab7bf
FB
363 rtsp_st->stream_index = -1;
364 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
365
366 rtsp_st->sdp_ip = s1->default_ip;
367 rtsp_st->sdp_ttl = s1->default_ttl;
368
93ced3e8
FB
369 get_word(buf1, sizeof(buf1), &p); /* port */
370 rtsp_st->sdp_port = atoi(buf1);
371
df8cf076
MS
372 get_word(buf1, sizeof(buf1), &p); /* protocol */
373 if (!strcmp(buf1, "udp"))
374 rt->transport = RTSP_TRANSPORT_RAW;
115329f1 375
93ced3e8
FB
376 /* XXX: handle list of formats */
377 get_word(buf1, sizeof(buf1), &p); /* format list */
378 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 379
7ed19d7f 380 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf 381 /* no corresponding stream */
1243c722
MS
382 if (rt->transport == RTSP_TRANSPORT_RAW && !rt->ts && CONFIG_RTPDEC)
383 rt->ts = ff_mpegts_parse_open(s);
45600148
MS
384 } else if (rt->server_type == RTSP_SERVER_WMS &&
385 codec_type == AVMEDIA_TYPE_DATA) {
386 /* RTX stream, a stream that carries all the other actual
387 * audio/video streams. Don't expose this to the callers. */
8b1ab7bf 388 } else {
84ad31ff 389 st = avformat_new_stream(s, NULL);
8b1ab7bf
FB
390 if (!st)
391 return;
84ad31ff 392 st->id = rt->nb_rtsp_streams - 1;
8b1ab7bf 393 rtsp_st->stream_index = st->index;
01f4895c 394 st->codec->codec_type = codec_type;
d1ccf0e0 395 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 396 RTPDynamicProtocolHandler *handler;
8b1ab7bf 397 /* if standard payload type, we can find the codec right now */
bf6d9818 398 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
399 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
400 st->codec->sample_rate > 0)
c3f9ebf7 401 avpriv_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
402 /* Even static payload types may need a custom depacketizer */
403 handler = ff_rtp_handler_find_by_id(
404 rtsp_st->sdp_payload_type, st->codec->codec_type);
405 init_rtp_handler(handler, rtsp_st, st->codec);
25836606
MS
406 if (handler && handler->init)
407 handler->init(s, st->index,
408 rtsp_st->dynamic_protocol_context);
8b1ab7bf
FB
409 }
410 }
1617ad97 411 /* put a default control url */
00eb13e0 412 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 413 sizeof(rtsp_st->control_url));
1617ad97
FB
414 break;
415 case 'a':
00eb13e0
AS
416 if (av_strstart(p, "control:", &p)) {
417 if (s->nb_streams == 0) {
418 if (!strncmp(p, "rtsp://", 7))
419 av_strlcpy(rt->control_uri, p,
420 sizeof(rt->control_uri));
421 } else {
0b6a7ff4
MS
422 char proto[32];
423 /* get the control url */
d9c0510e 424 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 425
0b6a7ff4
MS
426 /* XXX: may need to add full url resolution */
427 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
428 NULL, NULL, 0, p);
429 if (proto[0] == '\0') {
430 /* relative control URL */
431 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
432 av_strlcat(rtsp_st->control_url, "/",
433 sizeof(rtsp_st->control_url));
434 av_strlcat(rtsp_st->control_url, p,
435 sizeof(rtsp_st->control_url));
436 } else
437 av_strlcpy(rtsp_st->control_url, p,
438 sizeof(rtsp_st->control_url));
00eb13e0 439 }
83d14c85 440 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 441 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 442 get_word(buf1, sizeof(buf1), &p);
93ced3e8 443 payload_type = atoi(buf1);
d9c0510e 444 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
45600148
MS
445 if (rtsp_st->stream_index >= 0) {
446 st = s->streams[rtsp_st->stream_index];
447 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
448 }
7fc8ac7f
JA
449 } else if (av_strstart(p, "fmtp:", &p) ||
450 av_strstart(p, "framesize:", &p)) {
93ced3e8 451 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
452 // let dynamic protocol handlers have a stab at the line.
453 get_word(buf1, sizeof(buf1), &p);
454 payload_type = atoi(buf1);
d9c0510e
MS
455 for (i = 0; i < rt->nb_rtsp_streams; i++) {
456 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
457 if (rtsp_st->sdp_payload_type == payload_type &&
458 rtsp_st->dynamic_handler &&
459 rtsp_st->dynamic_handler->parse_sdp_a_line)
460 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
461 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 462 }
c8965800 463 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
464 int64_t start, end;
465
466 // this is so that seeking on a streamed file can work.
467 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
468 s->start_time = start;
469 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
470 s->duration = (end == AV_NOPTS_VALUE) ?
471 AV_NOPTS_VALUE : end - start;
119b4668
RB
472 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
473 if (atoi(p) == 1)
474 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
475 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
476 s->nb_streams > 0) {
477 st = s->streams[s->nb_streams - 1];
478 st->codec->sample_rate = atoi(p);
1a30d541
RB
479 } else {
480 if (rt->server_type == RTSP_SERVER_WMS)
481 ff_wms_parse_sdp_a_line(s, p);
482 if (s->nb_streams > 0) {
45600148
MS
483 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
484
c4a3d032 485 if (rt->server_type == RTSP_SERVER_REAL)
45600148 486 ff_real_parse_sdp_a_line(s, rtsp_st->stream_index, p);
c4a3d032 487
c4a3d032
RB
488 if (rtsp_st->dynamic_handler &&
489 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800 490 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
45600148 491 rtsp_st->stream_index,
c4a3d032 492 rtsp_st->dynamic_protocol_context, buf);
1a30d541 493 }
1617ad97
FB
494 }
495 break;
496 }
497}
498
0526c6f7 499int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 500{
a8475bbd 501 RTSPState *rt = s->priv_data;
1617ad97
FB
502 const char *p;
503 int letter;
9211bcdd
RB
504 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
505 * contain long SDP lines containing complete ASF Headers (several
506 * kB) or arrays of MDPR (RM stream descriptor) headers plus
507 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
508 * buffer is large.
509 *
afcea58c
JA
510 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
511 * in rtpdec_xiph.c. */
373afbaf 512 char buf[16384], *q;
a92be9b8 513 SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state;
115329f1 514
1617ad97 515 p = content;
c8965800 516 for (;;) {
30619e6e 517 p += strspn(p, SPACE_CHARS);
1617ad97
FB
518 letter = *p;
519 if (letter == '\0')
520 break;
521 p++;
522 if (*p != '=')
523 goto next_line;
524 p++;
525 /* get the content */
526 q = buf;
b6892136 527 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
528 if ((q - buf) < sizeof(buf) - 1)
529 *q++ = *p;
530 p++;
531 }
532 *q = '\0';
93ced3e8 533 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
534 next_line:
535 while (*p != '\n' && *p != '\0')
536 p++;
537 if (*p == '\n')
538 p++;
539 }
a8475bbd
LB
540 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
541 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
542 return 0;
543}
44b70ce5 544#endif /* CONFIG_RTPDEC */
1617ad97 545
93e7490e
MS
546void ff_rtsp_undo_setup(AVFormatContext *s)
547{
548 RTSPState *rt = s->priv_data;
549 int i;
550
551 for (i = 0; i < rt->nb_rtsp_streams; i++) {
552 RTSPStream *rtsp_st = rt->rtsp_streams[i];
553 if (!rtsp_st)
554 continue;
555 if (rtsp_st->transport_priv) {
556 if (s->oformat) {
557 AVFormatContext *rtpctx = rtsp_st->transport_priv;
558 av_write_trailer(rtpctx);
559 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
560 uint8_t *ptr;
6dc7d80d 561 avio_close_dyn_buf(rtpctx->pb, &ptr);
93e7490e
MS
562 av_free(ptr);
563 } else {
22a3212e 564 avio_close(rtpctx->pb);
93e7490e 565 }
b22dbb29 566 avformat_free_context(rtpctx);
93e7490e
MS
567 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
568 ff_rdt_parse_close(rtsp_st->transport_priv);
125c6c07 569 else if (rt->transport == RTSP_TRANSPORT_RTP && CONFIG_RTPDEC)
bfc6db44 570 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
571 }
572 rtsp_st->transport_priv = NULL;
573 if (rtsp_st->rtp_handle)
e52a9145 574 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
575 rtsp_st->rtp_handle = NULL;
576 }
577}
578
1ced9da3 579/* close and free RTSP streams */
3307e6ea 580void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 581{
52aa4338 582 RTSPState *rt = s->priv_data;
1ced9da3
LA
583 int i;
584 RTSPStream *rtsp_st;
585
93e7490e 586 ff_rtsp_undo_setup(s);
c8965800 587 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
588 rtsp_st = rt->rtsp_streams[i];
589 if (rtsp_st) {
1ced9da3 590 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
9261e6cf 591 rtsp_st->dynamic_handler->free(
c8965800 592 rtsp_st->dynamic_protocol_context);
ea7f0807 593 av_free(rtsp_st);
1ced9da3
LA
594 }
595 }
596 av_free(rt->rtsp_streams);
597 if (rt->asf_ctx) {
cd3716b9 598 avformat_close_input(&rt->asf_ctx);
1ced9da3 599 }
1243c722
MS
600 if (rt->ts && CONFIG_RTPDEC)
601 ff_mpegts_parse_close(rt->ts);
a8475bbd 602 av_free(rt->p);
96a7c975 603 av_free(rt->recvbuf);
1ced9da3
LA
604}
605
6e71c120 606int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
607{
608 RTSPState *rt = s->priv_data;
609 AVStream *st = NULL;
610
611 /* open the RTP context */
612 if (rtsp_st->stream_index >= 0)
613 st = s->streams[rtsp_st->stream_index];
614 if (!st)
615 s->ctx_flags |= AVFMTCTX_NOHEADER;
616
44b70ce5 617 if (s->oformat && CONFIG_RTSP_MUXER) {
68c81308
MS
618 int ret = ff_rtp_chain_mux_open(&rtsp_st->transport_priv, s, st,
619 rtsp_st->rtp_handle,
620 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 621 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 622 rtsp_st->rtp_handle = NULL;
68c81308
MS
623 if (ret < 0)
624 return ret;
df8cf076
MS
625 } else if (rt->transport == RTSP_TRANSPORT_RAW) {
626 return 0; // Don't need to open any parser here
44b70ce5 627 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
628 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
629 rtsp_st->dynamic_protocol_context,
630 rtsp_st->dynamic_handler);
44b70ce5 631 else if (CONFIG_RTPDEC)
bfc6db44 632 rtsp_st->transport_priv = ff_rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
633 rtsp_st->sdp_payload_type,
634 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
635 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
636
637 if (!rtsp_st->transport_priv) {
638 return AVERROR(ENOMEM);
df8cf076 639 } else if (rt->transport == RTSP_TRANSPORT_RTP && CONFIG_RTPDEC) {
c8965800 640 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
641 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
642 rtsp_st->dynamic_protocol_context,
643 rtsp_st->dynamic_handler);
1ced9da3
LA
644 }
645 }
646
647 return 0;
648}
649
6f5a3d0a 650#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
651static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
652{
ddce7dab
MR
653 const char *q;
654 char *p;
1617ad97
FB
655 int v;
656
ddce7dab
MR
657 q = *pp;
658 q += strspn(q, SPACE_CHARS);
659 v = strtol(q, &p, 10);
1617ad97
FB
660 if (*p == '-') {
661 p++;
662 *min_ptr = v;
ddce7dab 663 v = strtol(p, &p, 10);
1617ad97
FB
664 *max_ptr = v;
665 } else {
666 *min_ptr = v;
667 *max_ptr = v;
668 }
669 *pp = p;
670}
671
672/* XXX: only one transport specification is parsed */
a9e534d5 673static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
674{
675 char transport_protocol[16];
676 char profile[16];
677 char lower_transport[16];
678 char parameter[16];
679 RTSPTransportField *th;
680 char buf[256];
115329f1 681
1617ad97 682 reply->nb_transports = 0;
115329f1 683
c8965800 684 for (;;) {
30619e6e 685 p += strspn(p, SPACE_CHARS);
1617ad97
FB
686 if (*p == '\0')
687 break;
688
689 th = &reply->transports[reply->nb_transports];
690
115329f1 691 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 692 "/", &p);
bb3244de 693 if (!av_strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
694 get_word_sep(profile, sizeof(profile), "/;,", &p);
695 lower_transport[0] = '\0';
696 /* rtp/avp/<protocol> */
697 if (*p == '/') {
7ecc634e
LB
698 get_word_sep(lower_transport, sizeof(lower_transport),
699 ";,", &p);
119b4668
RB
700 }
701 th->transport = RTSP_TRANSPORT_RTP;
bb3244de
RD
702 } else if (!av_strcasecmp (transport_protocol, "x-pn-tng") ||
703 !av_strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 704 /* x-pn-tng/<protocol> */
e1502118
LB
705 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
706 profile[0] = '\0';
119b4668 707 th->transport = RTSP_TRANSPORT_RDT;
df8cf076
MS
708 } else if (!av_strcasecmp(transport_protocol, "raw")) {
709 get_word_sep(profile, sizeof(profile), "/;,", &p);
710 lower_transport[0] = '\0';
711 /* raw/raw/<protocol> */
712 if (*p == '/') {
713 get_word_sep(lower_transport, sizeof(lower_transport),
714 ";,", &p);
715 }
716 th->transport = RTSP_TRANSPORT_RAW;
1617ad97 717 }
bb3244de 718 if (!av_strcasecmp(lower_transport, "TCP"))
90abbdba 719 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 720 else
90abbdba 721 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 722
1617ad97
FB
723 if (*p == ';')
724 p++;
725 /* get each parameter */
726 while (*p != '\0' && *p != ',') {
727 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
728 if (!strcmp(parameter, "port")) {
729 if (*p == '=') {
730 p++;
731 rtsp_parse_range(&th->port_min, &th->port_max, &p);
732 }
733 } else if (!strcmp(parameter, "client_port")) {
734 if (*p == '=') {
735 p++;
115329f1 736 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
737 &th->client_port_max, &p);
738 }
739 } else if (!strcmp(parameter, "server_port")) {
740 if (*p == '=') {
741 p++;
115329f1 742 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
743 &th->server_port_max, &p);
744 }
745 } else if (!strcmp(parameter, "interleaved")) {
746 if (*p == '=') {
747 p++;
115329f1 748 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
749 &th->interleaved_max, &p);
750 }
751 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
752 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
753 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
754 } else if (!strcmp(parameter, "ttl")) {
755 if (*p == '=') {
756 p++;
757 th->ttl = strtol(p, (char **)&p, 10);
758 }
759 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
760 if (*p == '=') {
761 p++;
762 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 763 get_sockaddr(buf, &th->destination);
1617ad97 764 }
619298a8
JW
765 } else if (!strcmp(parameter, "source")) {
766 if (*p == '=') {
767 p++;
768 get_word_sep(buf, sizeof(buf), ";,", &p);
769 av_strlcpy(th->source, buf, sizeof(th->source));
770 }
45b06858
JO
771 } else if (!strcmp(parameter, "mode")) {
772 if (*p == '=') {
773 p++;
774 get_word_sep(buf, sizeof(buf), ";, ", &p);
775 if (!strcmp(buf, "record") ||
776 !strcmp(buf, "receive"))
777 th->mode_record = 1;
778 }
1617ad97 779 }
619298a8 780
1617ad97
FB
781 while (*p != ';' && *p != '\0' && *p != ',')
782 p++;
783 if (*p == ';')
784 p++;
785 }
786 if (*p == ',')
787 p++;
788
789 reply->nb_transports++;
790 }
791}
792
29db7c3a
MS
793static void handle_rtp_info(RTSPState *rt, const char *url,
794 uint32_t seq, uint32_t rtptime)
795{
796 int i;
797 if (!rtptime || !url[0])
798 return;
799 if (rt->transport != RTSP_TRANSPORT_RTP)
800 return;
801 for (i = 0; i < rt->nb_rtsp_streams; i++) {
802 RTSPStream *rtsp_st = rt->rtsp_streams[i];
803 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
804 if (!rtpctx)
805 continue;
806 if (!strcmp(rtsp_st->control_url, url)) {
807 rtpctx->base_timestamp = rtptime;
808 break;
809 }
810 }
811}
812
813static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
814{
815 int read = 0;
816 char key[20], value[1024], url[1024] = "";
817 uint32_t seq = 0, rtptime = 0;
818
819 for (;;) {
820 p += strspn(p, SPACE_CHARS);
821 if (!*p)
822 break;
823 get_word_sep(key, sizeof(key), "=", &p);
824 if (*p != '=')
825 break;
826 p++;
827 get_word_sep(value, sizeof(value), ";, ", &p);
828 read++;
829 if (!strcmp(key, "url"))
830 av_strlcpy(url, value, sizeof(url));
831 else if (!strcmp(key, "seq"))
4515f9b5 832 seq = strtoul(value, NULL, 10);
29db7c3a 833 else if (!strcmp(key, "rtptime"))
4515f9b5 834 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
835 if (*p == ',') {
836 handle_rtp_info(rt, url, seq, rtptime);
837 url[0] = '\0';
838 seq = rtptime = 0;
839 read = 0;
840 }
841 if (*p)
842 p++;
843 }
844 if (read > 0)
845 handle_rtp_info(rt, url, seq, rtptime);
846}
847
2626308a 848void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 849 RTSPState *rt, const char *method)
1617ad97
FB
850{
851 const char *p;
852
853 /* NOTE: we do case independent match for broken servers */
854 p = buf;
f7d78f36 855 if (av_stristart(p, "Session:", &p)) {
30e79845 856 int t;
1617ad97 857 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
858 if (av_stristart(p, ";timeout=", &p) &&
859 (t = strtol(p, NULL, 10)) > 0) {
860 reply->timeout = t;
861 }
f7d78f36 862 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 863 reply->content_length = strtol(p, NULL, 10);
f7d78f36 864 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 865 rtsp_parse_transport(reply, p);
f7d78f36 866 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 867 reply->seq = strtol(p, NULL, 10);
f7d78f36 868 } else if (av_stristart(p, "Range:", &p)) {
31693e00 869 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 870 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 871 p += strspn(p, SPACE_CHARS);
30aa6aed 872 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 873 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 874 p += strspn(p, SPACE_CHARS);
7a86bafa 875 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
876 } else if (av_stristart(p, "Notice:", &p) ||
877 av_stristart(p, "X-Notice:", &p)) {
878 reply->notice = strtol(p, NULL, 10);
d243ba30 879 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 880 p += strspn(p, SPACE_CHARS);
d243ba30 881 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 882 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 883 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
884 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
885 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 886 p += strspn(p, SPACE_CHARS);
acc9ed14 887 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 888 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 889 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
890 if (method && !strcmp(method, "DESCRIBE"))
891 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
892 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
893 p += strspn(p, SPACE_CHARS);
894 if (method && !strcmp(method, "PLAY"))
895 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
896 } else if (av_stristart(p, "Public:", &p) && rt) {
897 if (strstr(p, "GET_PARAMETER") &&
898 method && !strcmp(method, "OPTIONS"))
899 rt->get_parameter_supported = 1;
30eae325
MS
900 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
901 p += strspn(p, SPACE_CHARS);
902 rt->accept_dynamic_rate = atoi(p);
fcd0298c
JO
903 } else if (av_stristart(p, "Content-Type:", &p)) {
904 p += strspn(p, SPACE_CHARS);
905 av_strlcpy(reply->content_type, p, sizeof(reply->content_type));
1617ad97
FB
906 }
907}
908
b7b8fc34 909/* skip a RTP/TCP interleaved packet */
ec55edba 910void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
911{
912 RTSPState *rt = s->priv_data;
913 int ret, len, len1;
914 uint8_t buf[1024];
915
dce37564 916 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
917 if (ret != 3)
918 return;
80fb8234 919 len = AV_RB16(buf + 1);
67c9cd69 920
dfd2a005 921 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 922
b7b8fc34
FB
923 /* skip payload */
924 while (len > 0) {
925 len1 = len;
926 if (len1 > sizeof(buf))
927 len1 = sizeof(buf);
dce37564 928 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
929 if (ret != len1)
930 return;
931 len -= len1;
932 }
933}
1617ad97 934
3307e6ea 935int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 936 unsigned char **content_ptr,
3df54c6b 937 int return_on_interleaved_data, const char *method)
1617ad97
FB
938{
939 RTSPState *rt = s->priv_data;
940 char buf[4096], buf1[1024], *q;
941 unsigned char ch;
942 const char *p;
1a6b9a98 943 int ret, content_length, line_count = 0, request = 0;
1617ad97
FB
944 unsigned char *content = NULL;
945
1a6b9a98
TW
946start:
947 line_count = 0;
948 request = 0;
949 content = NULL;
d541a7d2 950 memset(reply, 0, sizeof(*reply));
1617ad97 951
1617ad97 952 /* parse reply (XXX: use buffers) */
1617ad97 953 rt->last_reply[0] = '\0';
c8965800 954 for (;;) {
1617ad97 955 q = buf;
c8965800 956 for (;;) {
dce37564 957 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
dfd2a005 958 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 959 if (ret != 1)
2401660d 960 return AVERROR_EOF;
1617ad97
FB
961 if (ch == '\n')
962 break;
b7b8fc34
FB
963 if (ch == '$') {
964 /* XXX: only parse it if first char on line ? */
7e726132
RB
965 if (return_on_interleaved_data) {
966 return 1;
967 } else
ec55edba 968 ff_rtsp_skip_packet(s);
b7b8fc34 969 } else if (ch != '\r') {
1617ad97
FB
970 if ((q - buf) < sizeof(buf) - 1)
971 *q++ = ch;
972 }
973 }
974 *q = '\0';
67c9cd69 975
dfd2a005 976 av_dlog(s, "line='%s'\n", buf);
67c9cd69 977
1617ad97
FB
978 /* test if last line */
979 if (buf[0] == '\0')
980 break;
981 p = buf;
982 if (line_count == 0) {
983 /* get reply code */
984 get_word(buf1, sizeof(buf1), &p);
1a6b9a98
TW
985 if (!strncmp(buf1, "RTSP/", 5)) {
986 get_word(buf1, sizeof(buf1), &p);
987 reply->status_code = atoi(buf1);
988 av_strlcpy(reply->reason, p, sizeof(reply->reason));
989 } else {
990 av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method
991 get_word(buf1, sizeof(buf1), &p); // object
992 request = 1;
993 }
1617ad97 994 } else {
77223c53 995 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
996 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
997 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
998 }
999 line_count++;
1000 }
115329f1 1001
1a6b9a98 1002 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0' && !request)
75e61b0e 1003 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 1004
1617ad97
FB
1005 content_length = reply->content_length;
1006 if (content_length > 0) {
1007 /* leave some room for a trailing '\0' (useful for simple parsing) */
1008 content = av_malloc(content_length + 1);
dce37564 1009 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
1010 content[content_length] = '\0';
1011 }
1012 if (content_ptr)
1013 *content_ptr = content;
e2e2e7dd
AB
1014 else
1015 av_free(content);
7e726132 1016
1a6b9a98
TW
1017 if (request) {
1018 char buf[1024];
1019 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1020 const char* ptr = buf;
1021
1022 if (!strcmp(reply->reason, "OPTIONS")) {
1023 snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n");
1024 if (reply->seq)
1025 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq);
1026 if (reply->session_id[0])
1027 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n",
1028 reply->session_id);
1029 } else {
1030 snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n");
1031 }
1032 av_strlcat(buf, "\r\n", sizeof(buf));
1033
1034 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1035 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1036 ptr = base64buf;
1037 }
1038 ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr));
1039
1040 rt->last_cmd_time = av_gettime();
1041 /* Even if the request from the server had data, it is not the data
1042 * that the caller wants or expects. The memory could also be leaked
1043 * if the actual following reply has content data. */
1044 if (content_ptr)
1045 av_freep(content_ptr);
1046 /* If method is set, this is called from ff_rtsp_send_cmd,
1047 * where a reply to exactly this request is awaited. For
705eeb5e 1048 * callers from within packet receiving, we just want to
1a6b9a98
TW
1049 * return to the caller and go back to receiving packets. */
1050 if (method)
1051 goto start;
1052 return 0;
1053 }
1054
7ed8211b
LB
1055 if (rt->seq != reply->seq) {
1056 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
1057 rt->seq, reply->seq);
1058 }
1059
fccb1770
RB
1060 /* EOS */
1061 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
1062 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 1063 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 1064 rt->state = RTSP_STATE_IDLE;
c8965800 1065 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 1066 return AVERROR(EIO); /* data or server error */
c8965800 1067 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
1068 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
1069 return AVERROR(EPERM);
1070
7e726132 1071 return 0;
1617ad97
FB
1072}
1073
57c4d01e
DEP
1074/**
1075 * Send a command to the RTSP server without waiting for the reply.
1076 *
1077 * @param s RTSP (de)muxer context
1078 * @param method the method for the request
1079 * @param url the target url for the request
1080 * @param headers extra header lines to include in the request
1081 * @param send_content if non-null, the data to send as request body content
1082 * @param send_content_length the length of the send_content data, or 0 if
1083 * send_content is null
1084 *
1085 * @return zero if success, nonzero otherwise
1086 */
1087static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
1088 const char *method, const char *url,
1089 const char *headers,
1090 const unsigned char *send_content,
1091 int send_content_length)
29b9f58b
RB
1092{
1093 RTSPState *rt = s->priv_data;
f5d33f52
JA
1094 char buf[4096], *out_buf;
1095 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 1096
f5d33f52
JA
1097 /* Add in RTSP headers */
1098 out_buf = buf;
29b9f58b 1099 rt->seq++;
b17d11c6
MS
1100 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1101 if (headers)
1102 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1103 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
1104 if (rt->session_id[0] != '\0' && (!headers ||
1105 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1106 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1107 }
aa8bf2fb
MS
1108 if (rt->auth[0]) {
1109 char *str = ff_http_auth_create_response(&rt->auth_state,
1110 rt->auth, url, method);
1111 if (str)
1112 av_strlcat(buf, str, sizeof(buf));
1113 av_free(str);
1114 }
dfd017bf
MS
1115 if (send_content_length > 0 && send_content)
1116 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1117 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1118
f5d33f52
JA
1119 /* base64 encode rtsp if tunneling */
1120 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1121 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1122 out_buf = base64buf;
1123 }
1124
dfd2a005 1125 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 1126
925e908b 1127 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
1128 if (send_content_length > 0 && send_content) {
1129 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1130 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1131 "with content data not supported\n");
1132 return AVERROR_PATCHWELCOME;
1133 }
925e908b 1134 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1135 }
30e79845 1136 rt->last_cmd_time = av_gettime();
d0382374
JA
1137
1138 return 0;
30e79845
RB
1139}
1140
d0382374 1141int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1142 const char *url, const char *headers)
dfd017bf 1143{
d0382374 1144 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1145}
1146
d0382374 1147int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1148 const char *headers, RTSPMessageHeader *reply,
1149 unsigned char **content_ptr)
30e79845 1150{
d0382374 1151 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1152 content_ptr, NULL, 0);
29b9f58b
RB
1153}
1154
d0382374 1155int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1156 const char *method, const char *url,
1157 const char *header,
1158 RTSPMessageHeader *reply,
1159 unsigned char **content_ptr,
1160 const unsigned char *send_content,
1161 int send_content_length)
dfd017bf 1162{
30af0779
MS
1163 RTSPState *rt = s->priv_data;
1164 HTTPAuthType cur_auth_type;
2f96cc1f 1165 int ret, attempts = 0;
30af0779
MS
1166
1167retry:
1168 cur_auth_type = rt->auth_state.auth_type;
d0382374 1169 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1170 send_content,
1171 send_content_length)))
d0382374 1172 return ret;
dfd017bf 1173
3df54c6b 1174 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1175 return ret;
2f96cc1f 1176 attempts++;
30af0779 1177
2f96cc1f
MS
1178 if (reply->status_code == 401 &&
1179 (cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) &&
1180 rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2)
30af0779 1181 goto retry;
d0382374 1182
bf55cf19 1183 if (reply->status_code > 400){
d93fdcbf 1184 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1185 method,
d93fdcbf
LB
1186 reply->status_code,
1187 reply->reason);
bf55cf19
LB
1188 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1189 }
1190
d0382374 1191 return 0;
dfd017bf
MS
1192}
1193
fef5649a 1194int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1195 int lower_transport, const char *real_challenge)
1617ad97
FB
1196{
1197 RTSPState *rt = s->priv_data;
58f09785 1198 int rtx = 0, j, i, err, interleave = 0, port_off;
1617ad97 1199 RTSPStream *rtsp_st;
a9e534d5 1200 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1201 char cmd[2048];
e9dea59f
RB
1202 const char *trans_pref;
1203
119b4668 1204 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f 1205 trans_pref = "x-pn-tng";
df8cf076
MS
1206 else if (rt->transport == RTSP_TRANSPORT_RAW)
1207 trans_pref = "RAW/RAW";
e9dea59f
RB
1208 else
1209 trans_pref = "RTP/AVP";
115329f1 1210
30e79845
RB
1211 /* default timeout: 1 minute */
1212 rt->timeout = 60;
1213
1617ad97
FB
1214 /* for each stream, make the setup request */
1215 /* XXX: we assume the same server is used for the control of each
c8965800 1216 * RTSP stream */
d1ccf0e0 1217
58f09785
DV
1218 /* Choose a random starting offset within the first half of the
1219 * port range, to allow for a number of ports to try even if the offset
1220 * happens to be at the end of the random range. */
1221 port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2);
1222 /* even random offset */
1223 port_off -= port_off & 0x01;
1224
1225 for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1226 char transport[2048];
1227
f75e3da5 1228 /*
f830c9a4
RB
1229 * WMS serves all UDP data over a single connection, the RTX, which
1230 * isn't necessarily the first in the SDP but has to be the first
1231 * to be set up, else the second/third SETUP will fail with a 461.
1232 */
1233 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1234 rt->server_type == RTSP_SERVER_WMS) {
1235 if (i == 0) {
1236 /* rtx first */
1237 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1238 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1239 if (len >= 4 &&
c8965800
RB
1240 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1241 "/rtx"))
f830c9a4
RB
1242 break;
1243 }
1244 if (rtx == rt->nb_rtsp_streams)
1245 return -1; /* no RTX found */
1246 rtsp_st = rt->rtsp_streams[rtx];
1247 } else
1248 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1249 } else
2fea9650 1250 rtsp_st = rt->rtsp_streams[i];
1617ad97 1251
1617ad97 1252 /* RTP/UDP */
90abbdba 1253 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1254 char buf[256];
85fb7b34 1255
f830c9a4
RB
1256 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1257 port = reply->transports[0].client_port_min;
1258 goto have_port;
1259 }
1260
85fb7b34 1261 /* first try in specified port range */
dbb06b8c 1262 while (j <= rt->rtp_port_max) {
bc495bad
DV
1263 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1264 "?localport=%d", j);
1265 /* we will use two ports per rtp stream (rtp and rtcp) */
1266 j += 2;
1267 if (!ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
1268 &s->interrupt_callback, NULL))
1269 goto rtp_opened;
1617ad97 1270 }
85fb7b34 1271
a3b058b7
MS
1272 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1273 err = AVERROR(EIO);
1274 goto fail;
85fb7b34
FB
1275
1276 rtp_opened:
bfc6db44 1277 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1278 have_port:
0ad306bc 1279 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1280 "%s/UDP;", trans_pref);
1281 if (rt->server_type != RTSP_SERVER_REAL)
1282 av_strlcat(transport, "unicast;", sizeof(transport));
1283 av_strlcatf(transport, sizeof(transport),
1284 "client_port=%d", port);
f830c9a4
RB
1285 if (rt->transport == RTSP_TRANSPORT_RTP &&
1286 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1287 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1288 }
1289
1290 /* RTP/TCP */
90abbdba 1291 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1292 /* For WMS streams, the application streams are only used for
090438cc
RB
1293 * UDP. When trying to set it up for TCP streams, the server
1294 * will return an error. Therefore, we skip those streams. */
1295 if (rt->server_type == RTSP_SERVER_WMS &&
45600148
MS
1296 (rtsp_st->stream_index < 0 ||
1297 s->streams[rtsp_st->stream_index]->codec->codec_type ==
1298 AVMEDIA_TYPE_DATA))
090438cc 1299 continue;
0ad306bc 1300 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1301 "%s/TCP;", trans_pref);
895678f8 1302 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1303 av_strlcat(transport, "unicast;", sizeof(transport));
1304 av_strlcatf(transport, sizeof(transport),
1305 "interleaved=%d-%d",
1306 interleave, interleave + 1);
1307 interleave += 2;
1617ad97
FB
1308 }
1309
90abbdba 1310 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1311 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1312 "%s/UDP;multicast", trans_pref);
1617ad97 1313 }
69adcc4f 1314 if (s->oformat) {
bbc80386 1315 av_strlcat(transport, ";mode=record", sizeof(transport));
69adcc4f 1316 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1317 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1318 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1319 snprintf(cmd, sizeof(cmd),
b6892136 1320 "Transport: %s\r\n",
b17d11c6 1321 transport);
76b0d03d
MS
1322 if (rt->accept_dynamic_rate)
1323 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
44b70ce5 1324 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1325 char real_res[41], real_csum[9];
1326 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1327 real_challenge);
1328 av_strlcatf(cmd, sizeof(cmd),
1329 "If-Match: %s\r\n"
1330 "RealChallenge2: %s, sd=%s\r\n",
1331 rt->session_id, real_res, real_csum);
1332 }
b17d11c6 1333 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1334 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1335 err = 1;
1336 goto fail;
7e6ca34f
RB
1337 } else if (reply->status_code != RTSP_STATUS_OK ||
1338 reply->nb_transports != 1) {
1617ad97
FB
1339 err = AVERROR_INVALIDDATA;
1340 goto fail;
1341 }
1342
1343 /* XXX: same protocol for all streams is required */
1344 if (i > 0) {
119b4668
RB
1345 if (reply->transports[0].lower_transport != rt->lower_transport ||
1346 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1347 err = AVERROR_INVALIDDATA;
1348 goto fail;
1349 }
1350 } else {
90abbdba 1351 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1352 rt->transport = reply->transports[0].transport;
1617ad97
FB
1353 }
1354
8c579c1c
MS
1355 /* Fail if the server responded with another lower transport mode
1356 * than what we requested. */
1357 if (reply->transports[0].lower_transport != lower_transport) {
1358 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1359 err = AVERROR_INVALIDDATA;
1360 goto fail;
1617ad97
FB
1361 }
1362
90abbdba
RB
1363 switch(reply->transports[0].lower_transport) {
1364 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1365 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1366 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1367 break;
115329f1 1368
c8965800 1369 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1370 char url[1024], options[30] = "";
c8965800 1371
9867aea5 1372 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
a92c30d7 1373 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1374 /* Use source address if specified */
1375 if (reply->transports[0].source[0]) {
1376 ff_url_join(url, sizeof(url), "rtp", NULL,
1377 reply->transports[0].source,
d8407339 1378 reply->transports[0].server_port_min, "%s", options);
619298a8 1379 } else {
7bac991f 1380 ff_url_join(url, sizeof(url), "rtp", NULL, host,
d8407339 1381 reply->transports[0].server_port_min, "%s", options);
619298a8 1382 }
c8965800 1383 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1384 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1385 err = AVERROR_INVALIDDATA;
1386 goto fail;
1617ad97 1387 }
9c8fa20d
MS
1388 /* Try to initialize the connection state in a
1389 * potential NAT router by sending dummy packets.
1390 * RTP/RTCP dummy packets are used for RDT, too.
1391 */
44b70ce5
MS
1392 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1393 CONFIG_RTPDEC)
bfc6db44 1394 ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1395 break;
c8965800
RB
1396 }
1397 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
6294d708 1398 char url[1024], namebuf[50], optbuf[20] = "";
7934b15d 1399 struct sockaddr_storage addr;
c8965800
RB
1400 int port, ttl;
1401
7934b15d
MS
1402 if (reply->transports[0].destination.ss_family) {
1403 addr = reply->transports[0].destination;
c8965800
RB
1404 port = reply->transports[0].port_min;
1405 ttl = reply->transports[0].ttl;
1406 } else {
7934b15d 1407 addr = rtsp_st->sdp_ip;
c8965800
RB
1408 port = rtsp_st->sdp_port;
1409 ttl = rtsp_st->sdp_ttl;
1410 }
6294d708
MS
1411 if (ttl > 0)
1412 snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
7934b15d
MS
1413 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1414 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1415 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
6294d708 1416 port, "%s", optbuf);
6f1b7b39 1417 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1418 &s->interrupt_callback, NULL) < 0) {
c8965800
RB
1419 err = AVERROR_INVALIDDATA;
1420 goto fail;
1617ad97
FB
1421 }
1422 break;
1423 }
c8965800 1424 }
d1ccf0e0 1425
6e71c120 1426 if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1427 goto fail;
1617ad97
FB
1428 }
1429
62c3c8ca 1430 if (rt->nb_rtsp_streams && reply->timeout > 0)
30e79845
RB
1431 rt->timeout = reply->timeout;
1432
2e889ae4 1433 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1434 rt->need_subscription = 1;
1435
53620bba
RB
1436 return 0;
1437
1438fail:
aeb2de1c 1439 ff_rtsp_undo_setup(s);
53620bba
RB
1440 return err;
1441}
1442
b8c2c41d
JA
1443void ff_rtsp_close_connections(AVFormatContext *s)
1444{
1445 RTSPState *rt = s->priv_data;
e52a9145
AK
1446 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1447 ffurl_close(rt->rtsp_hd);
6217b645 1448 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1449}
1450
3307e6ea 1451int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1452{
1453 RTSPState *rt = s->priv_data;
921da217 1454 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
03f8fc08 1455 int port, err, tcp_fd;
354b7573 1456 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1457 int lower_transport_mask = 0;
2762a7a2 1458 char real_challenge[64] = "";
03f8fc08
MS
1459 struct sockaddr_storage peer;
1460 socklen_t peer_len = sizeof(peer);
57b5555c 1461
dbb06b8c
MS
1462 if (rt->rtp_port_max < rt->rtp_port_min) {
1463 av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1464 "than min port %d\n", rt->rtp_port_max,
1465 rt->rtp_port_min);
1466 return AVERROR(EINVAL);
1467 }
1468
57b5555c
MS
1469 if (!ff_network_init())
1470 return AVERROR(EIO);
eca4850c 1471
4fa57d52 1472 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1473 s->max_delay = s->iformat ? DEFAULT_REORDERING_DELAY : 0;
4fa57d52 1474
f5d33f52 1475 rt->control_transport = RTSP_MODE_PLAIN;
eca4850c
MS
1476 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1477 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1478 rt->control_transport = RTSP_MODE_TUNNEL;
1479 }
1480 /* Only pass through valid flags from here */
1481 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
eca4850c
MS
1482
1483redirect:
1484 lower_transport_mask = rt->lower_transport_mask;
53620bba 1485 /* extract hostname and port */
f3bfe388 1486 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1487 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1488 if (*auth) {
aa8bf2fb 1489 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1490 }
53620bba
RB
1491 if (port < 0)
1492 port = RTSP_DEFAULT_PORT;
1493
90abbdba 1494 if (!lower_transport_mask)
2a1d51c5 1495 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1496
3e24c770 1497 if (s->oformat) {
b7dc88fc
MS
1498 /* Only UDP or TCP - UDP multicast isn't supported. */
1499 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1500 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1501 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1502 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1503 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1504 err = AVERROR(EINVAL);
1505 goto fail;
1506 }
1507 }
1508
4bc5cc23
MS
1509 /* Construct the URI used in request; this is similar to s->filename,
1510 * but with authentication credentials removed and RTSP specific options
1511 * stripped out. */
1512 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1513 host, port, "%s", path);
1514
f5d33f52
JA
1515 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1516 /* set up initial handshake for tunneling */
1517 char httpname[1024];
1518 char sessioncookie[17];
1519 char headers[1024];
1520
10ed37b5 1521 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1522 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1523 av_get_random_seed(), av_get_random_seed());
1524
1525 /* GET requests */
6f1b7b39
MS
1526 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1527 &s->interrupt_callback) < 0) {
f5d33f52
JA
1528 err = AVERROR(EIO);
1529 goto fail;
1530 }
1531
1532 /* generate GET headers */
1533 snprintf(headers, sizeof(headers),
1534 "x-sessioncookie: %s\r\n"
1535 "Accept: application/x-rtsp-tunnelled\r\n"
1536 "Pragma: no-cache\r\n"
1537 "Cache-Control: no-cache\r\n",
1538 sessioncookie);
196bf28c 1539 av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
f5d33f52
JA
1540
1541 /* complete the connection */
ddffc2fd 1542 if (ffurl_connect(rt->rtsp_hd, NULL)) {
f5d33f52
JA
1543 err = AVERROR(EIO);
1544 goto fail;
1545 }
1546
1547 /* POST requests */
6f1b7b39
MS
1548 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
1549 &s->interrupt_callback) < 0 ) {
f5d33f52
JA
1550 err = AVERROR(EIO);
1551 goto fail;
1552 }
1553
1554 /* generate POST headers */
1555 snprintf(headers, sizeof(headers),
1556 "x-sessioncookie: %s\r\n"
1557 "Content-Type: application/x-rtsp-tunnelled\r\n"
1558 "Pragma: no-cache\r\n"
1559 "Cache-Control: no-cache\r\n"
1560 "Content-Length: 32767\r\n"
1561 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1562 sessioncookie);
196bf28c 1563 av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
6149485f 1564 av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
f5d33f52 1565
a8ead332
MS
1566 /* Initialize the authentication state for the POST session. The HTTP
1567 * protocol implementation doesn't properly handle multi-pass
1568 * authentication for POST requests, since it would require one of
1569 * the following:
1570 * - implementing Expect: 100-continue, which many HTTP servers
1571 * don't support anyway, even less the RTSP servers that do HTTP
1572 * tunneling
1573 * - sending the whole POST data until getting a 401 reply specifying
1574 * what authentication method to use, then resending all that data
1575 * - waiting for potential 401 replies directly after sending the
1576 * POST header (waiting for some unspecified time)
1577 * Therefore, we copy the full auth state, which works for both basic
1578 * and digest. (For digest, we would have to synchronize the nonce
1579 * count variable between the two sessions, if we'd do more requests
1580 * with the original session, though.)
1581 */
1582 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1583
9290f15d 1584 /* complete the connection */
ddffc2fd 1585 if (ffurl_connect(rt->rtsp_hd_out, NULL)) {
9290f15d
MS
1586 err = AVERROR(EIO);
1587 goto fail;
1588 }
f5d33f52 1589 } else {
48e77473 1590 /* open the tcp connection */
41874d0a 1591 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
6f1b7b39 1592 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
ddffc2fd 1593 &s->interrupt_callback, NULL) < 0) {
41874d0a
JA
1594 err = AVERROR(EIO);
1595 goto fail;
1596 }
00e4a1f4 1597 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1598 }
53620bba
RB
1599 rt->seq = 0;
1600
1869ea03 1601 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1602 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1603 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1604 NULL, 0, NI_NUMERICHOST);
1605 }
1606
c8965800
RB
1607 /* request options supported by the server; this also detects server
1608 * type */
1cf151e9 1609 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1610 cmd[0] = 0;
2e889ae4 1611 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1612 av_strlcat(cmd,
f75e3da5 1613 /*
1cf151e9
RB
1614 * The following entries are required for proper
1615 * streaming from a Realmedia server. They are
1616 * interdependent in some way although we currently
1617 * don't quite understand how. Values were copied
1618 * from mplayer SVN r23589.
f75e3da5
DB
1619 * ClientChallenge is a 16-byte ID in hex
1620 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1621 */
1622 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1623 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1624 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1625 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1626 sizeof(cmd));
b17d11c6 1627 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1628 if (reply->status_code != RTSP_STATUS_OK) {
1629 err = AVERROR_INVALIDDATA;
1630 goto fail;
1631 }
1632
1633 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1634 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1635 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1636 continue;
bb3244de 1637 } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
7a86bafa 1638 rt->server_type = RTSP_SERVER_WMS;
c8965800 1639 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1640 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1641 break;
1642 }
1643
44b70ce5 1644 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1645 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1646 else if (CONFIG_RTSP_MUXER)
c2688f3a 1647 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1648 if (err)
53620bba 1649 goto fail;
53620bba 1650
8a8754d8 1651 do {
c8965800
RB
1652 int lower_transport = ff_log2_tab[lower_transport_mask &
1653 ~(lower_transport_mask - 1)];
8a8754d8 1654
fef5649a 1655 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1656 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1657 real_challenge : NULL);
8a8754d8 1658 if (err < 0)
7e6ca34f 1659 goto fail;
90abbdba
RB
1660 lower_transport_mask &= ~(1 << lower_transport);
1661 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1662 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1663 goto fail;
1664 }
1665 } while (err);
53620bba 1666
2762a7a2
MS
1667 rt->lower_transport_mask = lower_transport_mask;
1668 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1669 rt->state = RTSP_STATE_IDLE;
c8965800 1670 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1671 return 0;
1672 fail:
3307e6ea 1673 ff_rtsp_close_streams(s);
b8c2c41d 1674 ff_rtsp_close_connections(s);
35cfd646 1675 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1676 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1677 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1678 reply->status_code,
1679 s->filename);
1680 goto redirect;
1681 }
57b5555c 1682 ff_network_close();
1617ad97
FB
1683 return err;
1684}
2e802e38 1685#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1686
44b70ce5 1687#if CONFIG_RTPDEC
0e59034e 1688static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1689 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1690{
1691 RTSPState *rt = s->priv_data;
1692 RTSPStream *rtsp_st;
a8475bbd
LB
1693 int n, i, ret, tcp_fd, timeout_cnt = 0;
1694 int max_p = 0;
1695 struct pollfd *p = rt->p;
e7993ece 1696 int *fds = NULL, fdsnum, fdsidx;
0e59034e 1697
c8965800 1698 for (;;) {
9957cdbf 1699 if (ff_check_interrupt(&s->interrupt_callback))
c76374c6 1700 return AVERROR_EXIT;
321259c1
MS
1701 if (wait_end && wait_end - av_gettime() < 0)
1702 return AVERROR(EAGAIN);
a8475bbd 1703 max_p = 0;
0e59034e 1704 if (rt->rtsp_hd) {
1869ea03 1705 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1706 p[max_p].fd = tcp_fd;
1707 p[max_p++].events = POLLIN;
0e59034e 1708 } else {
0e59034e
RB
1709 tcp_fd = -1;
1710 }
c8965800 1711 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1712 rtsp_st = rt->rtsp_streams[i];
1713 if (rtsp_st->rtp_handle) {
e7993ece
JO
1714 if (ret = ffurl_get_multi_file_handle(rtsp_st->rtp_handle,
1715 &fds, &fdsnum)) {
1716 av_log(s, AV_LOG_ERROR, "Unable to recover rtp ports\n");
1717 return ret;
1718 }
1719 if (fdsnum != 2) {
1720 av_log(s, AV_LOG_ERROR,
1721 "Number of fds %d not supported\n", fdsnum);
1722 return AVERROR_INVALIDDATA;
1723 }
1724 for (fdsidx = 0; fdsidx < fdsnum; fdsidx++) {
1725 p[max_p].fd = fds[fdsidx];
1726 p[max_p++].events = POLLIN;
1727 }
1728 av_free(fds);
0e59034e
RB
1729 }
1730 }
a8475bbd 1731 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1732 if (n > 0) {
a8475bbd 1733 int j = 1 - (tcp_fd == -1);
9cba6f5f 1734 timeout_cnt = 0;
c8965800 1735 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1736 rtsp_st = rt->rtsp_streams[i];
1737 if (rtsp_st->rtp_handle) {
a8475bbd 1738 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1739 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1740 if (ret > 0) {
1741 *prtsp_st = rtsp_st;
1742 return ret;
1743 }
1744 }
a8475bbd 1745 j+=2;
0e59034e
RB
1746 }
1747 }
5fe8021a 1748#if CONFIG_RTSP_DEMUXER
a8475bbd 1749 if (tcp_fd != -1 && p[0].revents & POLLIN) {
a8ad6ffa
JO
1750 if (rt->rtsp_flags & RTSP_FLAG_LISTEN) {
1751 if (rt->state == RTSP_STATE_STREAMING) {
1752 if (!ff_rtsp_parse_streaming_commands(s))
1753 return AVERROR_EOF;
1754 else
1755 av_log(s, AV_LOG_WARNING,
1756 "Unable to answer to TEARDOWN\n");
1757 } else
1758 return 0;
1759 } else {
1760 RTSPMessageHeader reply;
1761 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
1762 if (ret < 0)
1763 return ret;
1764 /* XXX: parse message */
1765 if (rt->state != RTSP_STATE_STREAMING)
1766 return 0;
1767 }
0e59034e 1768 }
5fe8021a 1769#endif
9cba6f5f 1770 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1771 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1772 } else if (n < 0 && errno != EINTR)
1773 return AVERROR(errno);
0e59034e
RB
1774 }
1775}
1776
0526c6f7 1777int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1778{
1779 RTSPState *rt = s->priv_data;
1780 int ret, len;
321259c1
MS
1781 RTSPStream *rtsp_st, *first_queue_st = NULL;
1782 int64_t wait_end = 0;
0e59034e 1783
b20359f5
JA
1784 if (rt->nb_byes == rt->nb_rtsp_streams)
1785 return AVERROR_EOF;
1786
0e59034e
RB
1787 /* get next frames from the same RTP packet */
1788 if (rt->cur_transport_priv) {
c8965800 1789 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1790 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1243c722 1791 } else if (rt->transport == RTSP_TRANSPORT_RTP) {
bfc6db44 1792 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1243c722
MS
1793 } else if (rt->ts && CONFIG_RTPDEC) {
1794 ret = ff_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf + rt->recvbuf_pos, rt->recvbuf_len - rt->recvbuf_pos);
1795 if (ret >= 0) {
1796 rt->recvbuf_pos += ret;
1797 ret = rt->recvbuf_pos < rt->recvbuf_len;
1798 }
1799 }
0e59034e
RB
1800 if (ret == 0) {
1801 rt->cur_transport_priv = NULL;
1802 return 0;
1803 } else if (ret == 1) {
1804 return 0;
c8965800 1805 } else
0e59034e 1806 rt->cur_transport_priv = NULL;
0e59034e
RB
1807 }
1808
321259c1
MS
1809 if (rt->transport == RTSP_TRANSPORT_RTP) {
1810 int i;
1811 int64_t first_queue_time = 0;
1812 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1813 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1814 int64_t queue_time;
1815 if (!rtpctx)
1816 continue;
1817 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1818 if (queue_time && (queue_time - first_queue_time < 0 ||
1819 !first_queue_time)) {
1820 first_queue_time = queue_time;
1821 first_queue_st = rt->rtsp_streams[i];
1822 }
1823 }
1824 if (first_queue_time)
1825 wait_end = first_queue_time + s->max_delay;
1826 }
1827
0e59034e
RB
1828 /* read next RTP packet */
1829 redo:
96a7c975
MS
1830 if (!rt->recvbuf) {
1831 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1832 if (!rt->recvbuf)
1833 return AVERROR(ENOMEM);
1834 }
1835
0e59034e
RB
1836 switch(rt->lower_transport) {
1837 default:
5fe8021a 1838#if CONFIG_RTSP_DEMUXER
0e59034e 1839 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1840 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1841 break;
5fe8021a 1842#endif
0e59034e
RB
1843 case RTSP_LOWER_TRANSPORT_UDP:
1844 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1845 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1846 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
bfc6db44 1847 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
0e59034e
RB
1848 break;
1849 }
321259c1
MS
1850 if (len == AVERROR(EAGAIN) && first_queue_st &&
1851 rt->transport == RTSP_TRANSPORT_RTP) {
1852 rtsp_st = first_queue_st;
bfc6db44 1853 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
1854 goto end;
1855 }
0e59034e
RB
1856 if (len < 0)
1857 return len;
1858 if (len == 0)
1859 return AVERROR_EOF;
c8965800 1860 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1861 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
df8cf076 1862 } else if (rt->transport == RTSP_TRANSPORT_RTP) {
bfc6db44 1863 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1864 if (ret < 0) {
1865 /* Either bad packet, or a RTCP packet. Check if the
1866 * first_rtcp_ntp_time field was initialized. */
1867 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1868 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1869 /* first_rtcp_ntp_time has been initialized for this stream,
1870 * copy the same value to all other uninitialized streams,
1871 * in order to map their timestamp origin to the same ntp time
1872 * as this one. */
1873 int i;
3a1cdcc7
MS
1874 AVStream *st = NULL;
1875 if (rtsp_st->stream_index >= 0)
1876 st = s->streams[rtsp_st->stream_index];
2cab6b48 1877 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1878 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1879 AVStream *st2 = NULL;
1880 if (rt->rtsp_streams[i]->stream_index >= 0)
1881 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1882 if (rtpctx2 && st && st2 &&
1883 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1884 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1885 rtpctx2->rtcp_ts_offset = av_rescale_q(
1886 rtpctx->rtcp_ts_offset, st->time_base,
1887 st2->time_base);
1888 }
2cab6b48
MS
1889 }
1890 }
b20359f5
JA
1891 if (ret == -RTCP_BYE) {
1892 rt->nb_byes++;
1893
1894 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1895 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1896
1897 if (rt->nb_byes == rt->nb_rtsp_streams)
1898 return AVERROR_EOF;
1899 }
2cab6b48 1900 }
1243c722
MS
1901 } else if (rt->ts && CONFIG_RTPDEC) {
1902 ret = ff_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf, len);
1903 if (ret >= 0) {
1904 if (ret < len) {
1905 rt->recvbuf_len = len;
1906 rt->recvbuf_pos = ret;
1907 rt->cur_transport_priv = rt->ts;
1908 return 1;
1909 } else {
1910 ret = 0;
1911 }
1912 }
df8cf076
MS
1913 } else {
1914 return AVERROR_INVALIDDATA;
2cab6b48 1915 }
321259c1 1916end:
0e59034e
RB
1917 if (ret < 0)
1918 goto redo;
c8965800 1919 if (ret == 1)
0e59034e
RB
1920 /* more packets may follow, so we save the RTP context */
1921 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1922
1923 return ret;
1924}
44b70ce5 1925#endif /* CONFIG_RTPDEC */
0e59034e 1926
44b70ce5 1927#if CONFIG_SDP_DEMUXER
cb1fdc61 1928static int sdp_probe(AVProbeData *p1)
93ced3e8 1929{
0e1ceacd 1930 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1931
3fbd12d1 1932 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1933 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1934 if (p + sizeof("c=IN IP") - 1 < p_end &&
1935 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1936 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1937
c8965800 1938 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1939 if (++p >= p_end)
cb1fdc61 1940 break;
cb1fdc61
FB
1941 if (*p == '\r')
1942 p++;
1943 }
93ced3e8
FB
1944 return 0;
1945}
1946
6e9651d1 1947static int sdp_read_header(AVFormatContext *s)
93ced3e8 1948{
8b1ab7bf 1949 RTSPState *rt = s->priv_data;
93ced3e8
FB
1950 RTSPStream *rtsp_st;
1951 int size, i, err;
1952 char *content;
1953 char url[1024];
1954
57b5555c
MS
1955 if (!ff_network_init())
1956 return AVERROR(EIO);
1957
4fa57d52 1958 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1959 s->max_delay = DEFAULT_REORDERING_DELAY;
4fa57d52 1960
93ced3e8
FB
1961 /* read the whole sdp file */
1962 /* XXX: better loading */
1963 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 1964 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1965 if (size <= 0) {
1966 av_free(content);
1967 return AVERROR_INVALIDDATA;
1968 }
1969 content[size] ='\0';
1970
f81c7ac7 1971 err = ff_sdp_parse(s, content);
93ced3e8 1972 av_free(content);
f81c7ac7 1973 if (err) goto fail;
93ced3e8
FB
1974
1975 /* open each RTP stream */
c8965800 1976 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1977 char namebuf[50];
8b1ab7bf 1978 rtsp_st = rt->rtsp_streams[i];
115329f1 1979
3fbd12d1
MS
1980 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1981 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1982 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1983 namebuf, rtsp_st->sdp_port,
51369f28
MS
1984 "?localport=%d&ttl=%d&connect=%d", rtsp_st->sdp_port,
1985 rtsp_st->sdp_ttl,
1986 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0);
6f1b7b39 1987 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1988 &s->interrupt_callback, NULL) < 0) {
93ced3e8
FB
1989 err = AVERROR_INVALIDDATA;
1990 goto fail;
1991 }
6e71c120 1992 if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1993 goto fail;
93ced3e8
FB
1994 }
1995 return 0;
c8965800 1996fail:
3307e6ea 1997 ff_rtsp_close_streams(s);
57b5555c 1998 ff_network_close();
93ced3e8
FB
1999 return err;
2000}
2001
93ced3e8
FB
2002static int sdp_read_close(AVFormatContext *s)
2003{
3307e6ea 2004 ff_rtsp_close_streams(s);
57b5555c 2005 ff_network_close();
93ced3e8
FB
2006 return 0;
2007}
2008
51369f28
MS
2009static const AVClass sdp_demuxer_class = {
2010 .class_name = "SDP demuxer",
2011 .item_name = av_default_item_name,
2012 .option = sdp_options,
2013 .version = LIBAVUTIL_VERSION_INT,
2014};
2015
c6610a21 2016AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
2017 .name = "sdp",
2018 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
2019 .priv_data_size = sizeof(RTSPState),
2020 .read_probe = sdp_probe,
2021 .read_header = sdp_read_header,
2022 .read_packet = ff_rtsp_fetch_packet,
2023 .read_close = sdp_read_close,
17934c18 2024 .priv_class = &sdp_demuxer_class,
93ced3e8 2025};
44b70ce5 2026#endif /* CONFIG_SDP_DEMUXER */
44594cc7 2027
44b70ce5 2028#if CONFIG_RTP_DEMUXER
44594cc7
MS
2029static int rtp_probe(AVProbeData *p)
2030{
2031 if (av_strstart(p->filename, "rtp:", NULL))
2032 return AVPROBE_SCORE_MAX;
2033 return 0;
2034}
2035
6e9651d1 2036static int rtp_read_header(AVFormatContext *s)
44594cc7
MS
2037{
2038 uint8_t recvbuf[1500];
2039 char host[500], sdp[500];
2040 int ret, port;
2041 URLContext* in = NULL;
2042 int payload_type;
a92be9b8 2043 AVCodecContext codec = { 0 };
44594cc7 2044 struct sockaddr_storage addr;
ae628ec1 2045 AVIOContext pb;
44594cc7 2046 socklen_t addrlen = sizeof(addr);
30266038 2047 RTSPState *rt = s->priv_data;
44594cc7
MS
2048
2049 if (!ff_network_init())
2050 return AVERROR(EIO);
2051
6f1b7b39 2052 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ,
ddffc2fd 2053 &s->interrupt_callback, NULL);
44594cc7
MS
2054 if (ret)
2055 goto fail;
2056
2057 while (1) {
bc371aca 2058 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
44594cc7
MS
2059 if (ret == AVERROR(EAGAIN))
2060 continue;
2061 if (ret < 0)
2062 goto fail;
2063 if (ret < 12) {
2064 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
2065 continue;
2066 }
2067
2068 if ((recvbuf[0] & 0xc0) != 0x80) {
2069 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
2070 "received\n");
2071 continue;
2072 }
2073
298a587f 2074 if (RTP_PT_IS_RTCP(recvbuf[1]))
f3a094f2
MS
2075 continue;
2076
44594cc7
MS
2077 payload_type = recvbuf[1] & 0x7f;
2078 break;
2079 }
1869ea03 2080 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 2081 ffurl_close(in);
44594cc7
MS
2082 in = NULL;
2083
44594cc7
MS
2084 if (ff_rtp_get_codec_info(&codec, payload_type)) {
2085 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
2086 "without an SDP file describing it\n",
2087 payload_type);
2088 goto fail;
2089 }
2090 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
2091 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
2092 "properly you need an SDP file "
2093 "describing it\n");
2094 }
2095
2096 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
2097 NULL, 0, s->filename);
2098
2099 snprintf(sdp, sizeof(sdp),
2100 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
2101 addr.ss_family == AF_INET ? 4 : 6, host,
2102 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
2103 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
2104 port, payload_type);
2105 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
2106
e731b8d8 2107 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
44594cc7
MS
2108 s->pb = &pb;
2109
2110 /* sdp_read_header initializes this again */
2111 ff_network_close();
2112
30266038
MS
2113 rt->media_type_mask = (1 << (AVMEDIA_TYPE_DATA+1)) - 1;
2114
6e9651d1 2115 ret = sdp_read_header(s);
44594cc7
MS
2116 s->pb = NULL;
2117 return ret;
2118
2119fail:
2120 if (in)
e52a9145 2121 ffurl_close(in);
44594cc7
MS
2122 ff_network_close();
2123 return ret;
2124}
2125
51369f28
MS
2126static const AVClass rtp_demuxer_class = {
2127 .class_name = "RTP demuxer",
2128 .item_name = av_default_item_name,
2129 .option = rtp_options,
2130 .version = LIBAVUTIL_VERSION_INT,
2131};
2132
c6610a21 2133AVInputFormat ff_rtp_demuxer = {
dfc2c4d9 2134 .name = "rtp",
6774247a 2135 .long_name = NULL_IF_CONFIG_SMALL("RTP input"),
dfc2c4d9
AK
2136 .priv_data_size = sizeof(RTSPState),
2137 .read_probe = rtp_probe,
2138 .read_header = rtp_read_header,
2139 .read_packet = ff_rtsp_fetch_packet,
2140 .read_close = sdp_read_close,
17934c18
MS
2141 .flags = AVFMT_NOFILE,
2142 .priv_class = &rtp_demuxer_class,
44594cc7 2143};
44b70ce5 2144#endif /* CONFIG_RTP_DEMUXER */